Embodiment
The embodiment of the disclosure describes wireless charging electrical pad, and wherein electronic equipment can be in the charging table of wireless charging electrical padIt is effectively charged in the overwhelming majority (if not whole region) in face.The emitter coil being arranged on below charging surfaceArray can produce can electronic equipment receiver or with electronic equipment coupling dock induce in base electric current whenVarying magnetic field.
Wireless charging electrical pad may include multiple transmitter line ring layers.Every layer may include to arrange and be configured as with latticeProduce the transmitter coil array in the magnetic field of corresponding lattice.Space in layer between each emitter coil can be" dead band ", i.e., the region in magnetic field is not produced.Therefore, multiple transmitter line ring layers can be arranged so that in the charging of wireless charging electrical padMinimum dead band on surface be present.In some embodiments, wireless charging electrical pad includes three transmitter line ring layers, wherein oftenLayer is arranged to the dead band filled in two other layer.For example, magnetic field can fill second as caused by the coil in first layerDead band in layer and third layer.Similarly, magnetic field can be filled in first layer and third layer as caused by the coil in the second layerDead band；And magnetic field can fill the dead band in first layer and the second layer as caused by the coil in third layer.Therefore, three hairsEmitter coil layer can jointly produce the magnetic field across charging surface, so that electronic equipment can be in the exhausted of charging surfaceCharged in major part.The aspect and feature of the embodiment of this wireless charging electrical pad are discussed herein.
I. wireless charging MAT
Fig. 1 shows the example wireless charging pad 100 according to some embodiments of the disclosure.Wireless charging electrical pad 100It may include charging surface 102, the equipment with wireless power receiver can be placed on the charging surface with the electricity to the equipmentPond carries out wireless charging.In some embodiments, charging surface 102 can be across the overwhelming majority of top surface 104 (such asFruit is not whole region) wireless charging electrical pad 100 top surface 104 region.The time-varying magnetic as caused by wireless charging electrical pad 100Field can propagate through the region of top surface 104 in charging surface 102, and form equipment and can wirelessly receive the continuous of electric powerRegion.
In some embodiments, equipment can be placed on to any position in charging surface 102 to receive electric power.ExampleSuch as, the first equipment 106 can be located at the left side of the wireless charging electrical pad 100 in charging surface 102, and be received from wireless charging electrical pad 100Electric power.And the second equipment (for example, equipment 108) can be located at charging surface 102 in wireless charging electrical pad 100 right side, with fromWireless charging electrical pad 100 receives electric power.It should be appreciated that the equipment from anywhere in being placed in charging surface 102 can be according to this public affairsThe embodiment opened receives electric power from wireless charging electrical pad 100.In some embodiments, more than one equipment can be placedTo receive electric power in wireless charging electrical pad 100.For example, equipment 106 and equipment 108 can be placed in wireless charging electrical pad 100 simultaneouslyWhile receive electric power.
Equipment 106 and equipment 108 can be configured as suitably setting from reception any of electric power of wireless charging electrical pad 100It is standby.For example, equipment 106 and/or equipment 108 can be portable electric appts (for example, mobile phone, media player, electricitySub- wrist-watch etc.), base, or accessory electronic device are docked, each has to be configured to work as to be exposed to is produced by wireless charging electrical pad 100Magnetic field when receive electric power receiver coil.
Wireless charging electrical pad 100 can be shaped as provide one or more equipment can be charged thereon it is appropriateSurface.For example, wireless charging electrical pad 100 can be the shape of bead (general oval) as shown in Figure 1, although other are implementedScheme can have different shapes.Some embodiments can have round-shaped, rectangular shape, square shape or it is any itsHis suitable shape, wireless charging can be carried out to equipment for being provided in the case where not departing from the spirit and scope of the disclosureSurface.
II. the arrangement of emitter coil
Time-varying magnetic field can be produced by the multiple emitter coils being embedded in wireless charging electrical pad 100.For example, wireless chargingPad 100 may include emitter coil arrangement as shown in Figure 2.Fig. 2 shows the insertion of some embodiments according to the disclosureEmitter coil arrangement 200 in charging pad 100.Fig. 2's diagrammatically show the wireless charging electrical pad for removing top surface 104100 so that it can be seen that embedded emitter coil arrangement 200.Emitter coil arrangement 200 may include to be arranged in different layersAnd the multiple transmitter coil arrays arranged in a manner of non-concentric so that when all emitter coils all work, can fillMagnetic field array is produced between ammeter face 102.
A. transmitter line circular pattern
According to some embodiments of the disclosure, the specific of emitter coil 200 is arranged such that the energy of wireless charging electrical pad 100Magnetic field array is enough produced, the magnetic field array is formed can be thereon to the trickle charge surface of electronic equipment charging.Trickle charge tableFace allows any opening position of the electronic equipment in charging surface to be effectively charged.Charging surface may span across wireless charging electrical pad100 overwhelming majority (if not whole region).In some embodiments, emitter coil arrangement 200 can be according to causingEmitter coil arrangement 200 can produce the basic pattern in the magnetic field to form trickle charge surface to arrange.Basic pattern canMore complicated pattern is extended to form, it forms larger trickle charge surface.
1. basic pattern
Fig. 3 shows the exemplary parent map with three emitter coils of some embodiments according to the disclosureCase 300：First transmitter coil 302, the emitter coil 306 of second transmitter coil 304 and the 3rd.First transmitter coil,Second transmitter coil and the 3rd emitter coil 302,304 and 306 may be arranged in three independent layers, so as to form hairEmitter coil stacks.For example, first transmitter coil 302 can be positioned in first layer, second transmitter coil 304 can positionOn the first layer in the square second layer, and the 3rd emitter coil 306 can be positioned on above first layer and the second layer theIn three layers.Each emitter coil can be formed by the single-layer wire that inside radius is wound up into from outer radius so that it forms flat ringShape shape, as will be discussed in further detail herein.As shown in figure 3, each emitter coil is shown as not having center structurePart (for example, " bobbin " for also will be discussed further herein) so that other hairs in the layer below emitter coilEmitter coil can be seen in order to understand.
In some embodiments, first transmitter coil, second transmitter coil and the 3rd emitter coil 302,304 and 306 can each include center terminal area.Center terminal area can be the region at the center of each emitter coil, its quiltIt is preserved for engaging with interconnection layer such as printed circuit board (PCB) (PCB).As shown in figure 3, first transmitter coil, second transmitterCoil and the 3rd emitter coil 302,304 and 306 can have center terminal area 316,318 and 320 respectively.Center terminal area316,318 and 320 can be the region at the center of each emitter coil for being preserved for engaging with interconnection layer, such as herein willDiscussed further.Therefore, first transmitter coil, second transmitter coil and the 3rd emitter coil 302,304 and 306Their own center terminal area, which can be located therein, can engage with interconnection layer without by the position of adjacent emitter coil stopPut.For example, the center terminal area 316 of emitter coil 302 be positioned laterally emitter coil 304 and 306 external diameter itOutside.Same description can be used for center terminal area 318 and 320.Therefore, center terminal area 316,318 and 320 can extend acrossEmitter coil is stacked without intersecting with another emitter coil.In some embodiments, center terminal area 316,318Equally spaced apart from one another it can be positioned with 320 so that center terminal area 316,318 and 320 forms equilateral triangle 322.
2. rose floral designs
As described above, basic pattern is expansible with other figures of formation for different shape and the wireless charging electrical pad of sizeCase.One of such pattern is rose floral designs, in view of its circular contour, it is applicable to almost circular wireless chargingElectrical pad.Rose floral designs can be wherein emitter coil with arranged superposed the pattern arranged so that in multiple coils notWith coil on a different plane and the heart different from each other.In the basic pattern of extension, one or more transmitter line ring layersIt may include more than one emitter coil.
Fig. 4 shows the exemplary transducer configured with rose floral designs of some embodiments according to the disclosureCoil arrangement 400.Emitter coil arrangement 400 may include three independent transmitter line ring layers, wherein one of these layersOr more persons include multiple emitter coils.For example, first transmitter coil layer may include emitter coil 402a-c, the second hairEmitter coil layer may include that emitter coil 404a-c, and the 3rd transmitter line ring layer may include emitter coil 406.HairEach emitter coil in emitter coil arrangement 400 can have the opening limited by the internal diameter of emitter coil, wherein eachOpening includes termination environment 418 (that is, core) not overlapping with any part of adjacent transmitter coil.In addition, transmitterCoil is arranged such that two coil hearts different from each other in multiple coils.
Basic pattern can be universal in whole rose floral designs so that near every group three togetherEmitter coil (one of each transmitter line ring layer) is arranged with basic pattern.For example, emitter coil 402a, 404aArranged with 406 with basic pattern.Similarly, emitter coil 402a, 404b and 406 arrange with basic pattern, emitter coil404b, 402c and 406 arrange that the rest may be inferred with basic pattern.By arranging emitter coil arrangement 400 according to basic pattern,Emitter coil arrangement 400 can create trickle charge region, and electronic equipment can charge in the charged area in any position.
In order to more fully understand the arrangement of the basic pattern of extension, Fig. 5 A-5C show emitter coil arrangement 400Different layers.Specifically, Fig. 5 A show the first layer for including emitter coil 402a-c, and Fig. 5 B are shown including transmitter lineThe 404a-c second layer is enclosed, and Fig. 5 C show the third layer for including emitter coil 406.According to embodiment, same layerIn emitter coil can be equally spaced so that caused magnetic field can be arranged with evenly spaced lattice.For example,Emitter coil 402a-c and 404a-c being capable of D1 spaced apart.For purpose is stacked, distance D1 can be selected as footIt is enough wide so that the part of the emitter coil in other layers is fitted in it, such as will be further described herein.In other implementationsIn scheme, distance D1 can be selected as sufficiently wide so that adjacent transmitter coil is not in contact with each other.For example, distance D1 can be smallIn 3mm.In specific embodiments, distance D1 is less than 1mm.
The center of each emitter coil in identical layer can be by distance of separation D2.Distance D2 can be influenceed in charging surfaceOn magnetic flux uniformity.Bigger distance D2 causes the relatively low magnetic flux on charging surface, conversely, small distance D2 is ledCause the higher magnetic flux on charging surface.In some embodiments, when considering the external diameter of each emitter coil, distanceD2 is selected as minimum range, and it allows the suitable distance D1 between emitter coil.In additional embodiment, distanceD2 is identical for all adjacent transmitter coils in identical layer.Therefore, the group (example of three emitter coil compositionsSuch as, correspondingly, the emitter coil 402a-c and 404a-c in each of first layer and the second layer) can be according to equilateral threeAngular 422 end points is arranged.
Although Fig. 5 A and 5B illustrate only three emitter coils in single transmitter line ring layer, it will be appreciated that implementScheme is not limited to the transmitter line ring layer only with three coils.On the contrary, other embodiments may include with more than three hairThe transmitter line ring layer of emitter coil.In such embodiment, emitter coil is arranged and is placed on correspondingly by equi-spaced apartIn the position at the angle of equilateral triangle.
B. transmitter line circular pattern is extended
Similar to basic pattern, rose floral designs (or any other pattern formed from basic pattern) can be expandedTo form the bigger group of the emitter coil of the wireless charging electrical pad for different shape and size.Fig. 6 A-6C show basisThe extension of the pattern of the emitter coil of some embodiments of the disclosure.Fig. 6 A show initial pattern 600, Fig. 6 B and figure6C each illustrates the initial pattern after being extended by increment transmitter line ring layer.
Initial pattern 600 in Fig. 6 A is shown as the emitter coil arrangement 600 with rose floral designs arrangement, althoughIt is understood to one skilled in the art that any initial pattern formed from basic pattern can be used as the initial pattern.Initial pattern600 include three transmitter line ring layers, and wherein first layer includes emitter coil 602a-c, and the second layer includes emitter coil604a-c, and third layer includes emitter coil 606a.The second layer may be disposed between first layer and third layer.
The mode of the pattern of expansible emitter coil can be based on its existing emitter coil arrangement.For example, will transmittingDevice coil is added to the layer that existing pattern can be located at based on hithermost transistor coil, wherein being added to the transmitter of patternCoil is placed in the layer that hithermost emitter coil is not located at.If as an example, hithermost emitter coil positionIn first layer and the second layer, then the next emitter coil for being used to extend pattern is located in third layer.Equally, if mostClose emitter coil is located in first layer and third layer, then next emitter coil is placed in the second layer；AndAnd if hithermost emitter coil is located in the second layer and third layer, then next emitter coil is placed on firstIn layer.When other coil is added into existing emitter coil arrangement, this method can be used for extending pattern.AdditionPositioned to each emitter coil of pattern according to the basic pattern herein in regard to Fig. 3 discussion.
In the specific embodiment shown in Fig. 6 B, emitter coil 606b and 606c are added to emitter coil arrangement600 arrange 601 to form emitter coil.Using method discussed here, emitter coil 606b and 606c are according to outermostEmitter coil position be placed on emitter coil arrangement 601 in.Due to outmost emitter coil 602b, 602cIt is located at 604b in first layer and the second layer, so emitter coil 606b and 606c can be positioned in third layer.By anotherOne transmitter line ring layer expander graphs case follows identical method.For example, as shown in Figure 6 C, emitter coil 602d is addedTo emitter coil arrangement 601 603 are arranged to form emitter coil.Due to outmost emitter coil 606b, 606c and604b is located in the second layer and third layer, so emitter coil 602d can be positioned in first layer.
Emitter coil arrangement 600 can expand to any degree according to any design.For example, emitter coil arrangement 600It can be extended according to 16 coil designs.Fig. 6 D show being formed by 16 coils according to some embodiments of the disclosureExemplary transducer coil arrangement 605.As illustrated, the emitter coil in emitter coil arrangement 605 can be with arranged superposedTissue so that the different coils in multiple coils are on a different plane and the heart different from each other.Emitter coil arrangement 605It can be similar to arrange that 200 coil is arranged herein in relation to the emitter coil of Fig. 2 Brief Discussions.Therefore, each transmitterCoil can be positioned so that provides wide covering on the charging surface 102 of charging pad 100.
In some embodiments, emitter coil arrangement 600 can further expand according to different designs.For example, hairEmitter coil arrangement 600 can extend according to 22 coil designs.Fig. 6 E are shown according to some embodiments of the disclosure by 22The exemplary transducer coil arrangement 607 that individual coil is formed.As illustrated, the step of according to illustrating herein in regard to Fig. 6 A-6C,Six interpole coils can be added to 16 coil designs.Addition interpole coil can change shape and the covering of charging surface 102.ThisOutside, addition interpole coil can change the magnetic flux density on charging surface 102.Arranged with the emitter coil with less coilCompare, more coils can cause the bigger magnetic flux density on bigger charging surface 102 and charging surface 102.
C. the covering of transmitter line circular pattern
According to the embodiment of the disclosure, shape can be produced with the emitter coil that the pattern formed by basic pattern is arrangedInto the magnetic field on trickle charge surface.Any position of the electronic equipment that trickle charge surface allows to rest in it connectsElectric power is received, can be to the ease for use of his or her equipment charge so as to strengthen user.
Fig. 7 A-7C show how the pattern of the emitter coil of the embodiment according to the disclosure produces trickle chargeSurface.Each figure shows the individual course of emitter coil arrangement, and shows to depict the strong of the magnetic field on certain distanceThe corresponding diagram of degree.The figure depicts the intensity of an emitter coil, but all transmitter lines that can be applied in same layerCircle.Each figure with represent the intensity (it can be represented by the unit H for the ampere for representing every meter) in magnetic field upwards increased Y-axis withAnd represent that the horizontal range across charging surface increases to the X-axis on right side.
Fig. 7 A show array and expression according to the emitter coil 700 of some contents of the disclosure by transmitter lineFigure 70 8 of the intensity-distance Curve in magnetic field caused by circle 702.The array of emitter coil 700 can be located at transmitter lineThe array of the emitter coil enclosed in the first layer of arrangement.In some embodiments, emitter coil 702, which produces, has by forceThe magnetic field of degree-distance Curve 714, it reaches peak value and with away from curve 714 in the immediate vicinity of emitter coil 702Center it is mobile and reduce.
In order that emitter coil performs wireless charging, emitter coil can need to produce strong to being enough to extend to chargingThe magnetic field of surface.Enabling the threshold value of wireless charging can be represented by the intensity threshold 715 shown in Figure 70 8.Higher than intensity thresholdThe part of the curve 714 of value 715 can be enough to be used in wireless charging, and can less than the part of the curve 714 of intensity threshold 715It is not enough to be used for wireless charging.Curve 714 can be designated as " dead band " 716 and 718 less than the part of intensity threshold 715, whereinMagnetic field is not enough to carry out wireless charging to the electronic equipment being shelved on charging surface.
Therefore, according to embodiment, extra play can be incorporated to fill dead band in emitter coil arrangement.Such as Fig. 7 B institutesShow, the mode that second transmitter coil layer can be consistent with the arrangement of basic pattern discussed in this article is placed on the first hairThe top of emitter coil layer, to fill at least some dead bands of first layer, so as to obtain emitter coil arrangement 701.Second hairEmitter coil layer may include the emitter coil 704 with magnetic field intensity-distance Curve 720.By by emitter coil 704Including in the second layer, the magnetic field as caused by emitter coil 704 (and other emitter coils in the second layer) can fillDead band 718 from first layer.Therefore, the part of the charging surface corresponding with the emitter coil in the second layer canPerform wireless charging.
It can be seen that from chart 720, even if the addition second layer, still there may be some dead bands.For example, the portion in dead band 716Dividing to still have, and so as to cause some regions of charging surface to perform wireless charging, and cause discontinuous charging tableFace.Therefore, according to some embodiments of the disclosure, third layer is may be incorporated into fill remaining dead band.
Fig. 7 C show to be formed on the top of first transmitter coil layer and second transmitter coil layer to form transmitting3rd transmitter line ring layer of device coil arrangement 703.In some embodiments, second transmitter coil layer can be located at firstBetween transmitter line ring layer and the 3rd transmitter line ring layer.3rd transmitter line ring layer may include bent with magnetic field intensity-distanceThe emitter coil 706 of line 722.By the way that emitter coil 706 is included in third layer, by emitter coil 706 (and theOther emitter coils in two layers) caused by magnetic field can fill the dead band 716 from first layer and the second layer.Therefore, fillingMay be there is no any dead band in ammeter face, so as to form trickle charge surface, when residing in any position, electronic equipment canThe wireless charging in trickle charge surface.
Although Fig. 7 A-7C, which are shown only, has three layers to produce the emitter coil on trickle charge surface arrangement, embodiment partyCase is not limited to such construct.In the case where not departing from the spirit and scope of the disclosure, other embodiment, which can have, to be more than or lacksIn three layers to form trickle charge surface.
D. the rotation arrangement of emitter coil
Compared with the array of similar coil for being arranged to individual layer, emitter coil is arranged so that them in assemblingOverlapped each other in different layers and add the z-height (for example, thickness) of emitter coil arrangement.According to some realities of the disclosureScheme is applied, the emitter coil during emitter coil is arranged can be orientated in the radial direction various, so that emitter coil is arrangedZ-height minimize, described in various embodiments as discussed below.Radially put to being emitter coil relative to referenceThe angle that direction is axially aligned with, it can be any arbitrary angle direction, such as really northern.The footpath of emitter coilIt can be defined to direction by the differential seat angle between the reference position of emitter coil and reference direction.
Fig. 8 A show exemplary reference positions of the emitter coil 801a-b relative to exemplary reference direction 807.ShowExample property reference direction 807 can correspond to the angle direction in the real north, as shown in Figure 8 A.Reference position can be by transmitterAny structure division of coil represents that it is common in every other emitter coil.For example, emitter coil 801aReference position 803a can be represented by emitter coil 801a terminal end 805.Similarly, emitter coil 801b ginsengExamining position 803b can be represented by emitter coil 801b counterpart terminal end 805b.Emitter coil 801a radial directionIt can be limited by the angle between reference position 807 and reference position 803a, and emitter coil 801b radial direction can be byAngle between reference direction 807 and reference position 803b limits.Therefore, emitter coil 801a may be arranged at and launchDevice coil 801b is different in the radial direction, as shown in Figure 8 A.
The ad hoc fashion of these emitter coils arrangement can be based on one or more factors.For example, the knot of emitter coilStructure may include that the projection in the interval between the emitter coil in adjacent layer can be coordinated, so as to minimize Z- height.ExampleSuch as, the emitter coil in first layer can have prominent in the interval between the adjacent transmitter coil coordinated in the second layerRise.The details of this class formation will be further described herein.
Emitter coil in different transmitter line ring layers can be in different arrangements in the radial direction.Fig. 8 B show byThe exemplary transducer coil arrangement 800 that three transmitter line ring layers are formed：First transmitter coil layer 802, second transmitterThe transmitter line ring layer 806 of coil layer 804 and the 3rd, wherein every layer of emitter coil is arranged in the radial direction different from other layerOn direction.Emitter coil arrangement 800 is illustrated with being suitable for the arrangement of coccoid wireless charging electrical pad, in such as Fig. 1 and Fig. 2Wireless charging electrical pad 100.With reference to figure 1 and Fig. 2, although it is understood that, embodiment is not limited to this arrangement, and is not taking offIn the case of spirit and scope from the disclosure, other embodiment can have the hair for the wireless charging electrical pad for being suitable for other shapesEmitter coil is arranged.
As shown in Figure 8 B, the emitter coil of first transmitter coil layer 802 may be arranged in the first radial direction 808,The emitter coil of second transmitter coil layer 804 may be arranged in the second radial direction 810, and the 3rd emitter coilThe emitter coil of layer 806 may be arranged in the 3rd radial direction 812.First radial direction, the second radial direction and the 3rd footpathAngle skew 814 can be offset from one another to direction 808,810 and 812.Angle skew 814 can be identified as when assembling emitter coilCause first transmitter coil layer, second transmitter coil layer and the and of the 3rd transmitter line ring layer 802,804 when arranging 800806 emitter coil can realize the angle of minimum z-height, as discussed further herein.In some embodimentsIn, the scope of angle skew 814 is between 110 to 130 degree, specifically about 120 degree in certain embodiments.
Although the emitter coil in different layers may be arranged at it is different in the radial direction, the hair in same coplanar layerEmitter coil may be arranged at identical in the radial direction.In order to preferably show this concept, Fig. 9 A-9C respectively illustrate figureThe different transmitter line ring layers of emitter coil arrangement 800 in 8B.Specifically, Fig. 9 A show first transmitter coil layer802, Fig. 9 B show second transmitter coil layer 804, and Fig. 9 C show the 3rd transmitter line ring layer 806.
It can be seen that from Fig. 9 A-9C, emitter coil 802 is all arranged in identical in the radial direction, such as the first footpathTo direction 808.Similarly, whole radially 810 arrangement of emitter coil 804, and emitter coil 806 all alongRadial direction 812 is arranged.In some embodiments, the emitter coil in identical layer is substantially coplanar.It is in addition, identical commonAdjacent transmitter coil positioning equally spaced from each other in surface layer, as discussed herein in regard to Fig. 5 A and 5B.In addition, in coplanar layerEvery group of emitter coil be symmetrical on transverse axis 900.In some embodiments, there was only two in three layers of emitter coilLayer has the emitter coil of identical quantity.For example, the emitter coil 802 in first layer has and the transmitting in the second layerThe emitter coil of 804 identical quantity of device coil.Emitter coil 806 in third layer can have and other two layer differencesThe emitter coil of quantity, such as two emitter coils fewer than other two layers.This phenomenon is extension rose discussed aboveThe pseudomorphism of rare floral designs.
Fig. 8 B and 9A-9C show an exemplary emitter coil arrangement；However, embodiment be not limited to it is suchArrangement.Other embodiments can have different emitter coils to arrange.For example, Figure 10 show according to the disclosure someThe exemplary transducer coil arrangement 1000 for including 16 independent coils of embodiment, wherein emitter coil is based on itPosition in emitter coil arrangement arranged along different radial direction.For example, emitter coil arrangement 1000 may include12 external transmitter coils 1002 and four interior emitter coils 1004.External transmitter coil 1002 can be positioned at transmittingOne group of emitter coil near the outermost regions of device coil arrangement 1000, and interior emitter coil 1004 can be by outgoingThose emitter coils that emitter coil 1002 surrounds.As shown in Figure 10, interior emitter coil 1004 is indicated by bold line, outsideEmitter coil 1002 is indicated by non-thick line, in order to observe.
In some embodiments, external transmitter coil 1002 is arranged in the radial direction different from interior emitter coil 1004On direction.As shown in Figure 10, external transmitter coil 1002 can be along the outer peripheral radial direction for pointing to emitter coil arrangement 1000Direction arrange, and interior emitter coil 1004 may be arranged at it is each in the radial direction.It is arranged in such a way external transmitter coil1002 enable interior zone of some parts away from charging surface of external transmitter coil 1002 to position.Due to transmitter lineThe structure construction of circle, these parts are probably the less efficient part of emitter coil, as discussed further herein.
In view of the multi-ply construction of emitter coil arrangement 1000, emitter coil in identical coplanar layer can be along differentDirection is arranged.Figure 11 A-11C each illustrate the different transmitter line ring layers of emitter coil arrangement 1000 in Figure 10.SpecificallyGround, Figure 11 A show first transmitter coil layer 1102, and Figure 11 B show second transmitter coil layer 1104, and Figure 11 CShow the 3rd transmitter line ring layer 1106 of emitter coil arrangement 1000.
Such as it can be seen that from Figure 11 A-11C, one or more of first transmitter coil layer 1102 emitter coil quiltIt is arranged in different in the radial direction from other emitter coils in same layer.As the external transmitter coil in Figure 10The emitter coil of 1002 part, for example, emitter coil 1108a, 1108b, 1108d, 1108e and 1108f can be by clothIt is set to so that their radial direction faces out, as discussed herein by reference to Figure 10, to be realized more in wireless charging electrical padUniform charging surface.On the contrary, the emitter coil of the part as the interior emitter coil 1104 in Figure 10, such as send outEmitter coil 1108c, increment of its radial direction between 110 to 130 degree is may be arranged so that, such as relative to Fig. 8 B120 degree discussed.As corresponding interior emitter coil and outgoing in second transmitter coil layer and the 3rd transmitter line ring layerThe emitter coil of a part for emitter coil, as shown in figs. 11B and 11C, it may be based on identical principle arrangement.
The emitter coil shown in Fig. 2-11C in corresponding transmitter coil arrangement can have similar size.For example,Emitter coil in each emitter coil arrangement can have identical internal diameter and external diameter.Figure 12 A show example transmissionDevice coil arrangement 1200, wherein all emitter coils have substantially the same size, such as identical internal diameter and external diameter.The diameter on the periphery that internal diameter can be formed by the circle of the emitter coil near its center limits, and external diameter can be by apart from itThe diameter of the girth that the circle of the farthest emitter coil in center is formed limits.For example, emitter coil 1202a can be with interiorFootpath 1204 and external diameter 1206.Even on Far Left in emitter coil arrangement 1200 and the transmitter line at farthest right positionCircle 1202b and 1202c can have the size essentially identical with every other emitter coil.In some embodiments, whenWhen corresponding internal diameter and the external diameter difference of emitter coil are less than 10%, especially less than 5% in some embodiments, transmitterCoil has essentially identical size.
Although the emitter coil arrangement being discussed herein can have essentially identical size, some embodiments canWith some of emitter coils with the size different from other emitter coils in same transmitter coil arrangementEmitter coil is arranged, as described in herein in relation to Figure 12 B.
Figure 12 B are shown arranges 1201 according to the exemplary transducer coil of some embodiments of the disclosure, wherein oneIndividual or multiple emitter coils have the size different from other emitter coils in emitter coil arrangement 1201.OneIn a little embodiments, the every other emitter coil in emitter coil arrangement 1200 can have identical internal-and external diameter 1204With external diameter 1206, except the emitter coil at the Far Left and rightmost of emitter coil arrangement 1200, such as launchDevice coil 1202b and 1202c.
Emitter coil 1202b and 1202c is because their position can have than the institute in emitter coil arrangement 1200There is the smaller internal diameter of other emitter coils.The Far Left and farthest right position of emitter coil arrangement 1200 are due to positioned at hairThe edge of emitter coil arrangement and with minimum emitter coil density.Therefore, can in magnetic flux caused by these opening positionsCan than emitter coil arrangement 1200 other regions at caused by magnetic flux density it is low, such as emitter coil arrangeMagnetic flux caused by 1200 immediate vicinity.Therefore, one or more emitter coils at most left and least significant canWith different coil dimensions, with magnetic flux density caused by increasing at those regions of emitter coil arrangement.For example, hairEmitter coil 1202b and 1202c can have than other emitter coils (such as transmitter in emitter coil arrangement 1200Coil 1202a) smaller internal diameter 1208 but there is identical external diameter 1210.By with less internal diameter, emitter coil1202b and 1202c can have more numbers of turn, so as to produce a greater amount of flux.In some embodiments, internal diameter1208 than 1204 small about 3 to 5 millimeters of internal diameter.For example, the about 4mm small than internal diameter 1204 of internal diameter 1208 so that internal diameter 1208 is13mm, and internal diameter 1204 is 17mm.It should be appreciated that other embodiments can change the shape and/or geometry of emitter coilStructure is to realize more smooth charged area.Additionally, the shape of one or more emitter coils can be based on wireless chargingThe geometry and emitter coil of pad are changed for the position of the wireless charging electrical pad.If for example, wireless chargingThe general shape of another shape of the pad in square or with some straight flanges, then it is arranged on the edge of the wireless charging electrical padSome emitter coils can be in " D " shape so that the straight flange of the emitter coil can correspond to and the wireless charging electrical padStraight flange.
III. transmitter line coil structures
As shown in figs. 2-12, emitter coil is shown round "O" ring.It should be appreciated that circular "O" ring represents to useIn the coil for producing time-varying magnetic field, it can induce corresponding electric current to perform wireless charging in receiver coil.OneIn a little embodiments, the coil that coil can be included a branch of smaller coil by every circle of its center line is formed.In other embodimentsIn, the coil that coil can be included single conductive material by every circle of its center line is formed.And Fig. 2-12 shows that emitter coil is madeFor circular rings, in some embodiments, each emitter coil can have the neighboring of circular shape, due to lineThe helical nature rather than positive round of width and line, as described in further detail below.As it is used herein, " circular" coil refers to the coil with circular periphery and the coil with the periphery being close to round, as described below.In other realitiesApply in scheme, emitter coil can be non-circular, such as hexagon so that coil maximizing adjacent transmitter coilBetween spacing use, or can be any other suitable shape, such as square, ellipse, rectangle, triangle etc..
A. emitter coil wiring
Figure 13 A show the example coil 1300 formed by more fine rules of some embodiments according to the disclosure.The single turn of line may include the beam 1302 of small wire, as shown in Figure 13 B.Figure 13 B show the cross-sectional view of the single turn of coil 13001301.The single turn of line may include more fine rules 1305, and it can be arranged with beamlet, such as beamlet 1303a, 1303b and 1303c.LineThe overall width of beam 1302 can be determined (for example, how many by the mode that the thickness and fine rule beam 1302 of every fine rule 1305 are arrangedFine rule 1305 is stacked to limit the height of each beamlet, H in a z-direction).In some embodiments, it is every thinThe thickness of line 1305 between 110 microns and 120 microns, can cause the beam 1302 of fine rule to have between 1-2mmWidth and 0.4 to the height (H) between 0.7mm.Due to the substantial amounts of number of turn can be realized in a limited space, thereforeParticularly useful can be for producing stronger magnetic field using fine rule beam to every circle of coil.
Coil 1300 can be formed by the coil wound between inside radius 1304 and outer radius 1306.In some embodiment partyIn case, coil 1300 can be the flat "O" ring formed by single-layer wire, and it is wound up into outer radius 1306 from inside radius 1304, insteadIt is as the same.Inside radius 1304 can be the non-no-radius for allowing coil 1300 to have empty inner space.Coil 1300 is wrapped inMinimize the whole height of coil in single-layer wire, so as to reduce the whole height of wireless charging electrical pad once coil is assembled.
In specific embodiments, every fine rule 1305 is electric insulated that it is coated over one or more layers dielectric materialIn material, such as polyurethane.Electric insulation layer prevents that fine rule is short-circuit with adjacent fine rule in winding.In addition, coil 1300 is as overallIt can be covered, the line of winding is attached together to form the single of coil by another layer of insulating materials (such as polyimides)Structure.As discussed further herein, coil 1300 could attach on bobbin, and therefore can easily be pickedAnd (for example, a part for manufacturing process is used as using robot) is placed in emitter coil arrangement.
In some embodiments, single conductive material can be used for every circle of line, rather than the beam using smaller line,As shown in fig. 13 c.Figure 13 C show the example coil formed by solid conductor of some embodiments according to the disclosure1307.Figure 13 D show the cross-sectional view 1309 of the single turn of coil 1307.As shown in cross-sectional view 1309, the single turn of line can be bySingle condctor 1311 is formed, rather than wire harness 1302 as shown in Figure 13 B.The every circle for being used for line using single conductor wire can be specialWherein application in the pcb, the wire printing of the available very small sizes of PCB Shi Yongyu not be formed by emitter coil.At someIn embodiment, single conductor wire can have a width between 0.9 and 1.3mm, and 0.08 to the height between 0.18mmDegree.
Referring again to Figure 13 A, coil 1300 can have two terminal ends：First terminal end 1308 and second terminalEnd 1310.Terminal end can be the passage that electric current can be entered and left by coil 1300.In some embodiments, eventuallyEnd end 1310 can be folded to be positioned in the internal diameter of coil 1300 on coil 1300, as shown in figs. 14 a and 14b.
Specifically, Figure 14 A show the top perspective of the coil 1400 according to some embodiments of the disclosure, itsMiddle terminal end 1402 and 1404 is positioned in the internal diameter 1406 of coil 1400, and Figure 14 B show the side view of coil 1400.Terminal end 1402 and 1404 is positioned in the internal diameter of coil 1400 to simplify and how coil 1400 is couple to another knotStructure such as drive plate, because it makes it possible to perform coupling, such as the center of coil 1400 in single position.
As shown in Figure 14 A, terminal end 1402 is bent above coil 1400 so that it is located in internal diameter 1406.AlthoughTerminal end 1402 seems that bending is without folding on itself above coil 1400, but embodiment not limited to thisClass is arranged, and implementation of side's folding to be positioned in internal diameter 1406 on itself of terminal end 1402 has been contemplated hereinScheme.In some embodiments, the part 1408 of terminal end 1402 is shelved on coil 1400 so that it is in coilProjection above 1400 plane.For example, with reference to figure 14B, part 1408 can limit by the surface being wound of coil 1400The top of plane 1410 of fixed coil 1400 extends.Projection can be only located at the side of coil 1400 so that coil 1400 it is anotherSide can not have projection.Different from terminal end 1402, terminal end 1404 can not be protruded above plane 1410, because itIt can have been positioned in internal diameter 1406.In some embodiments, terminal end 1404 can only to the center curvature of coil 1400,Without being folded in coil 1400.
Referring again to Figure 14 A, in some embodiments, terminal end 1402 and 1404 turns to the center of coil 1400Direction can form angle 1412 relative to each other.Angle 1412 can be determined based on deviation angle, such as herein in relation to figureThe deviation angle 814 that 8B is discussed.Deviation angle 814 can enable the lap 1408 of coil 1400 be positioned in adjacent layerEmitter coil between gap in so that the z-height that stacks of emitter coil minimizes, as discussed further herein's.
It can be seen that from Figure 14 A, a part for coil 1400 can have the number of turn different from other regions.For example, coil1400 region 1414 can have four circle lines, and the remainder of coil 1400 is not (for example, be the part in region 1414The region of coil 1400) there are five circle lines, as shown in Figure 14 A.In another embodiment (not shown in Figure 14 A), coil 1400Region 1414 can have than coil 1400 the more numbers of turn of remainder.It should be appreciated that have more in region 1414More or less numbers of turn depends on limiting the arrangement of the local terminal end 1402 and 1404 of winding beginning and end.Therefore,Compared to other regions of coil 1400, region 1414 can have other transmitter lines with being arranged in emitter coil arrangementThe different coupled characteristics of circle.For example, region 1414 can have other emitter coils in being arranged than emitter coil moreCoupling.The efficiency of emitter coil can be reduced with more couplings.Therefore, in some embodiments, region 1414 canIt is minimized to mitigate the coupling with other emitter coils by reducing the angle at the place of terminal end 1402 and 1404.For example, terminal end 1402 and 1404 can position in parallel with each other, as shown in Figure 14 C.In some embodiments, region1414 are less than the half of coil 1400 so that region 1414 is the coil 1400 compared with the remainder of coil 1400Smaller portions.
Figure 14 C show example coil 1401, and wherein terminal end 1402 and 1404 is arranged parallel to each other.Pass throughTerminal end 1402 and 1404 is arranged parallel to each other, there is the coil 1401 of the number of turn fewer than other regions of coilRegion 1416 can be minimized.For example, the region 1416 of only four circle lines can be minimised as the terminal end shown in Figure 14 CSmall distance between 1402 and 1404.By contrast, region 1416 can be significantly less than the region 1414 in Figure 14 A.Therefore, lead toMinimum region 1416 is crossed, coil 1401 can operate in a more effective manner.
In some embodiments, due to the line that forms coil 1400 and 1401 every circle width, each coil can haveThere is the shape (being limited by the neighboring of coil) of circular, it is not real circle.That is, coil 1400 and 1401Some regions of neighboring can deviate really round neighboring.For example, the neighboring for the real circle 1418 being illustrated by the broken linesThe top of coil 1400 and 1401 being superimposed upon in Figure 14 A and Figure 14 C.The neighboring of coil 1400 and 1401 with less circlePart (such as part 1414 and 1416) can by with shorter radius and deviate really circle 1418 neighboring.HairThe non-circular shape of emitter coil may indicate that the tissue of emitter coil arrangement, to ensure in the whole surface of charged areaUniform charge efficiency, as discussed further below.
As will be further understood that herein, the different modes that terminal end is arranged can influence the radial direction of coil, such asDiscussed herein in regard to Fig. 8-11C.The details of the relation herein will be discussed further on Figure 17 A- 19.
B. bobbin
According to some embodiments of the disclosure, each coil is around central, the discoid supporting construction for being referred to as " bobbin "Winding, and the terminal end of each coil is attached to central, the discoid supporting construction of referred to as " bobbin ".In entire disclosureIn content, " emitter coil " is sometimes referred to as and the structure formed by built-up coil and bobbin.Bobbin is supporting construction,It is not only that coil provides structural intergrity, but also provides the structure that terminal end could attach to, for corresponding a pairContact pin connection.Coil can be conductively coupled to drive plate by contact pin, for operating hair of the coil as wireless chargingEmitter coil.
Figure 15 A-15D show the example spool 1500 according to some embodiments of the disclosure.Specifically, Figure 15 AThe top perspective of bobbin 1500 is shown, Figure 15 B show the side view of bobbin 1500, and Figure 15 C and 15D show respectivelyThe side view of example spool 1520 and 1522 is gone out.Bobbin 1520 and 1522 can have the feature similar to bobbin 1500, removeTheir contact shell and pin can be arranged differently, as discussed below.
Bobbin 1500 can be the structure of the general planar of the disc-shape on the surface for including substantially flat and circle.ExampleSuch as, bobbin 1500 can have the top surface 1502 of substantially flat and the basal surface 1504 of substantially flat, as shown in fig. 15b.AgainWith reference to figure 15A, bobbin 1500 includes the contact shell 1506 of the immediate vicinity positioned at bobbin 1500.A pair of contact pins1508a-b can be located in contact shell 1502, be coupled for a pair of terminal ends corresponding with coil.Contact pin1508a-b can be the contact of cantilever beam (or any other suitable contact form) form, and it is configured as and control panelOn pad (for example, being formed as PCB drive plate) contact, twined for operating coil (not shown) around angle axis 1500Around.
In some embodiments, contact shell 1506 can protrude past the flat surfaces of bobbin 1500.For example, contactShell 1506 can protrude past the planar top surface 1502 shown in Figure 15 B.In another embodiment, contact shell 1506 can divideTop surface 1502 and basal surface 1504 are not protruded past, as shown in figure 15 c, or can protrude past basal surface 1504, are such as schemedShown in 15D.The plane that contact shell 1506 protrudes past bobbin 1500 provides in addition vertical with the terminal end for coilSpace, with contacting pin 1508a-b couplings.For example, contact shell 1506 can provide enough spaces, for by terminal endPortion is welded on bobbin 1500.Resulting welding structure can occupy the bobbin than top surface 1502 and the restriction of basal surface 1504The bigger vertical space of 1500 thickness.
Bobbin 1500 may also include a pair of contact pin 1512a-b.Contact pad 1512a-b can provide a surface, lineThe terminal end of circle could attach on the surface with electric coupling contact pin 1508a-b.For example, contact pad 1512a-b can be withIt is the surface for the substantially flat for being conductively coupled to corresponding contact pin 1508a-b.Bobbin 1500 may also include a pair of channels1510a-b, to allow terminal end to be coupled with contact pad 1512a-b.In some embodiments, passage 1510a-b is from outerEdge 1516 extends towards contact shell 1506, i.e., extends towards the center of bobbin 1500.Passage 1510a-b can carry terminal endPortion passes through its channel contacted with contact pad 1512a-b.As shown in fig. 15, passage 1510a-b can be bobbin 1500In clear area, wherein terminal end can be positioned and have no substantial effect on the integral thickness of bobbin 1500.
Bobbin 1500 may also include one or more opening 1516a and 1516b.Each opening 1516a and 1516b can be withExtend through the free space of bobbin 1500 so that equipment can be passed through to opposite side from the side of bobbin 1500.In some realitiesApply in scheme, opening 1516a and 1516b is to can be used for crawl bobbin 1500 and pick up bobbin 1500 and exactly by bobbin1500 are placed on the feature structure in ad-hoc location (such as emitter coil arrangement).In addition, opening 1516a and 1516b is providedIt is may pass through picking up and placing the device after its precalculated position of bobbin 1500 so that bobbin 1500 is fixed on into emitter coilChannel in arrangement.
In some embodiments, bobbin 1500 may include the attachment pad 1514 for coil to be attached to bobbin 1500.Any suitable adhesive, such as epobond epoxyn, can be by being fixed to attachment pad 1514 by bobbin 1500 by coilFixed to coil.Although Figure 15 A show three attachment pads 1514 being provided only on the side of bobbin 1500, embodimentIt is not limited to this construction.Other embodiments can have more or less attachments to pad, and be attached pad and may be provided at bobbinOne or both sides.
C. angle emitter coil
As shown in fig. 15, the passage 1510a-b of bobbin 1500 can be arranged with angle 1518 relative to each other.Angle 1518Can be non-zero angle, it is especially suitable for allowing emitter coil with minimum z height placements in stacking.For example, angle1518 can such as be 120 degree in specific embodiments between 110 to 130 degree.Angle 1518 may correspond in Figure 14Angle 1412 between the terminal end of coil 1400.Therefore, the coil wound around the outward flange 1516 of bobbin 1500 can be ledThe formation of induced coil 1400.According to some embodiments, cause as shown in figure 16 a and 16b around the wound around coil of bobbin 1500Angle emitter coil formation.
Figure 16 A and 16B are respectively illustrated according to some embodiments of the disclosure by the line that is wound around bobbin 1604The top perspective and bottom perspective view for the exemplary angle emitter coil 1600 that circle 1602 is formed.As shown in Figure 16 A, eventuallyEnd end 1606 and 1608 can be in such as Figure 15 A the angle of angle 1518 be attached to corresponding contact weldering on bobbin 1604Disk.Once being attached to contact pad, terminal end 1606 and 1608 can be conductively coupled to the corresponding contact in contact shell 1612Pin 1610a-b.Therefore, when contact pad 1610a-b is couple to drive plate (not shown), drive plate can electric couplingTo coil 1602 to control the operation of angle emitter coil 1600.In addition, once coil 1602 is wrapped on bobbin 1604,Angle emitter coil 1600 is formed and is configured to that driver can be picked and be placed on during the assembling of wireless charging electrical padSingle structure on plate.
It can be seen that terminal end 1608 can be in coil from the bottom perspective view of the angle emitter coil 1600 in Figure 16 B1602 tops are bent.Therefore, in addition to contacting shell 1612, terminal end 1608 also can be from angle emitter coil 1600Plane protrude.In some embodiments, terminal end 1608 and contact shell 1612 are from angle emitter coil 1600Same level protrudes.When being realized in being arranged in emitter coil, the projection can influence the radial oriented side of emitter coilFormula, as will be further discussed on figure Figure 17 A and 17B.
Figure 17 A show the exemplary hair for having angle emitter coil according to the formation of some embodiments of the disclosureEmitter coil arrangement 1700.Each angle emitter coil can be along the z-height suitable for minimizing emitter coil arrangement 1700Radial direction is arranged, while also the contact pin from each emitter coil is contacted with drive plate (not shown).ToolBody, it can be arranged based on the emitter coil shown in Fig. 8-9C come tissue emissions device coil arrangement 1700.Similar to herein in regard toFig. 8-9C discussion, the emitter coil in different transmitter line ring layers may be arranged at it is different in the radial direction, such asThe and of radial direction 1704,1706 in first transmitter coil layer, second transmitter coil layer and the 3rd transmitter line ring layer1708, so that the z- minimized heights of emitter coil arrangement 1700.Similar to the He of radial direction 808,810 in Fig. 8 B812, radial direction 1704,1706 and 1708 can be with the angle arranged offset of 110 to 130 degree (such as 120 degree).Select angle inclinedMove and to be folded between the adjacent windings in another layer from the terminal end that the plane of emitter coil protrudes, so as toMinimize the z-height of emitter coil arrangement 1700.
Figure 17 B show the bottom perspective view of the amplification of a part for emitter coil arrangement 1700.As illustrated, theThe terminal end 1710 of angle emitter coil in one transmitter line ring layer can be folded in second transmitter coil layerIn space between adjacent transmitter coil 1712 and 1714.Space between adjacent transmitter coil may correspond to close hereinIn the distance D1 that Fig. 5 A and 5B are discussed.Distance D1 can be more than the width of the width, the i.e. line of emitter coil of terminal.At someIn embodiment, distance D1 is in 1.5mm between 2mm.
The contact shell of emitter coil, which is located therein contact pin, to join with drive plate without being launched by anotherThe position of device coil obstruction.For example, contact shell can be located in the center terminal area 1718 of emitter coil.Central terminal area1718 may correspond to the center terminal area 418 herein in regard to Fig. 4 discussion.
D. parallel launch device coil
Figure 18 A-18B show the exemplary parallel launch device coil 1800 of some embodiments according to the disclosure.ToolBody, Figure 18 A show the top perspective of parallel launch device coil 1800, and Figure 18 B show parallel launch device coil1800 bottom perspective view.
As shown in Figure 18 A, transmitted in parallel device coil 1800 may include the coil 1802 being wrapped on bobbin 1804.TerminalCorresponding contact pad that end 1806 and 1808 could attach on bobbin 1804 and it is arranged parallel to each other.Work as terminal endDuring 1806 and 1808 parallel arrangement, the part of the winding line 1802 limited by the region between terminal end 1806 and 18081814 are smaller than winding the part 1614 of line 1602.Therefore, transmitted in parallel device coil 1800 is than angle emitter coil 1800More effectively.Once being attached to contact pad, terminal end 1806 and 1808 can be conductively coupled to corresponding in contact shell 1812Contact pin 1810a-b.Therefore, when contact pad 1810a-b is couple to drive plate (not shown), drive plate canCoil 1802 is conductively coupled to control the operation of angle emitter coil 1800.
It can be seen that from the bottom perspective view of the parallel launch device coil 1800 in Figure 18 B, contact shell 1812 can be from parallelThe plane of emitter coil 1800 protrudes.Terminal end 1808 can bend above coil 1802 and also from parallel launch deviceThe plane of coil 1800 protrudes.In some embodiments, terminal end 1808 and contact shell 1812 are from angle emitter lineThe same plane of circle 1800 protrudes.When being realized in being arranged in emitter coil, the projection can influence emitter coil and radially takeTo mode.
Figure 19 is shown according to some embodiments of the disclosure by parallel launch device coil and angle emitter coilThe exemplary transducer coil arrangement 1900 of formation.Each emitter coil can be along suitable for maximizing emitter coil arrangementThe radial direction arrangement of the efficiency of 1900 interior zone, while also minimize z-height and to come from each transmitterThe contact pin of coil can contact with drive plate (not shown).Specifically, can be according to the transmitter line shown in Figure 10-11CCircle is arranged to arrange that transmitter coils stack.The He of external transmitter coil 1902 can be similarly included in emitter coil arrangement 1900Interior emitter coil 1904.External transmitter coil 1902 can be near the outermost regions of emitter coil arrangement 1900Emitter coil single line, and interior emitter coil 1904 can be the transmitter line surrounded by external transmitter coil 1902Circle.
In some embodiments, external transmitter coil 1902 can be to point to the outside of emitter coil arrangement 1900The transmitted in parallel device coil of the radial direction arrangement of edge, such as emitter coil arrangement 1900 set wireless charging in the innerThe neighboring of pad.For example, the part 1906 of the external transmitter coil 1902 of the number of turn with less line, such as the effect of coilPart 1814 in such as Figure 18 A of the relatively low part of rate, 1900 outward flange orientation can be arranged towards emitter coil.Therefore,The remainder of external transmitter coil 1904 with more numbers of turn and higher efficiency can be concentrated to be arranged towards emitter coil1900 inside.This helps to ensure wireless charging electrical pad in the interior zone of charging surface with more consistent and effectiveCharging surface.
Although external transmitter coil 1902 can be formed by parallel launch device coil, due to by external transmitter coilSpace caused by 1902 arrangement is limited, and interior emitter coil 1904 can be formed by angle emitter coil.In order that interior transmittingDevice coil 1904 coordinates in emitter coil arrangement 1900, while makes z- minimized heights, and interior emitter coil 1904 can rootArranged according to the principle discussed herein in relation to Figure 17 A with various radial directions.That is, interior emitter coil 1904 can according to 110 toThe angle of (such as 120 degree) offsets and arranged along different radial directions between 130 degree so that from angle emitter coilBetween adjacent windings in the foldable another layer of terminal end that plane protrudes, so that the z that emitter coil stacks 1900 is highDegree minimizes.
IV. the multi-tier arrangement of emitter coil
In order to minimize the z-height of emitter coil arrangement, the projection and line of the emitter coil as caused by contact shellThe folding of the terminal end of circle can be nested in emitter coil arrangement so that they are not protruded as an entirety is launchingAbove or below device coil.In order to more fully understand the concept, Figure 20 A and 20B show that exemplary transducer coil is arranged2000 side view, show how projection positions upon assembly.The nesting of emitter coil arrangement 2000 can be similar to otherEmitter coil arrangement it is how nested and be other emitter coils arrangement how nested suitable proxy, such as Fig. 8, figure10th, the emitter coil arrangement 800,1000,1700 and 1900 shown in Figure 17 A and Figure 19.
Figure 20 A show the exploded view of emitter coil arrangement 2000, to show how projection positions.Emitter coilArrangement 2000 may include first transmitter coil 2002 in first transmitter coil layer, the in second transmitter coil layerThe 3rd emitter coil 2006 in two emitter coils 2004 and the 3rd transmitter line ring layer.Each emitter coil can generationOther emitter coils in table same layer.In some embodiments, first transmitter coil 2002 is positioned to and the 3rd hairEmitter coil 2006 separates, and second transmitter coil 2004 is located at first transmitter coil and the 3rd emitter coil respectivelyBetween 2002 and 2006.
First transmitter coil 2002 can have dashing forward for the flat surfaces 2010 for extending beyond first transmitter coil 2002Play part 2008.Surface 2010 may include the corresponding of both parts of bobbin that the coil of winding and coil are wound aboutFlat surfaces.Therefore, in some embodiments, the phase of the flat surfaces of the coil of winding and first transmitter coil 2002The part for answering the bobbin on side can be substantially coplanar.Because the other parts of bobbin can not be protruded on surface substantially2010 tops, so from the point of view of Figure 20 A side perspective, other parts are not shown, because after they are hidden in coilFace.In some embodiments, projection 2008 may include the folding terminal for contacting shell and coil.First transmitter coil2002 contact pin 2026, which can be positioned so that along the direction opposite with projection, extends beyond flat surfaces 2011.As hereinIt will be further discussed, contact pin 2026 is protruded past flat surfaces 2011 and contacted with the drive plate with bottom.
Similar to first transmitter coil 2002, the 3rd emitter coil 2006, which can have, extends beyond the 3rd transmitterThe projection 2012 of the flat surfaces 2014 of coil 2002.Projection 2012 may include the contact shell of bobbin and wound on the 3rd hairThe folding terminal end of coil on the bobbin of emitter coil 2006.The contact pin 2024 of 3rd emitter coil 2006 canThe direction for being positioned along projection extends beyond the end of projection 2012 (for example, contact shell through passing spool).Contact is drawnThe end that pin 2024 extends beyond projection 2012 is contacted with the drive plate with bottom.
As Figure 20 A are further illustrated, second transmitter coil 2004 can have and include two-part projection：Part I2016a and Part II 2016b.Part I 2016a may include the contact shell and winding of bobbin with Part II 2016bThe folding terminal end of coil on the bobbin of second transmitter coil 2004.Part I 2016a can extend over secondThe surface 2018 of emitter coil 2004, and Part II 2016b can extend over the surface relative with surface 20182020.The contact pin 2022 of second transmitter coil 2004 can be positioned so that the direction extension along Part II 2016bEnd more than Part II 2016b is contacted with the drive plate with bottom.
According to some embodiments of the disclosure, the transmitter line of projection 2008 and the 3rd of first transmitter coil 2002The projection 2012 of circle 2006 can be respectively facing second transmitter coil 2004 and position so that when emitter coil is assembled into transmittingWhen in device coil arrangement 2000, do not protruded as single protuberance above or below emitter coil arrangement 2000.In addition,The position of the contact pad of emitter coil is arranged such that when emitter coil is assembled into emitter coil arrangement 2000When, the basal surface that contact pin can extend over emitter coil arrangement 2000 is contacted with the drive plate with bottom.Contact is drawnPin away from emitter coil each surface positioning distance be configured such that even in be assembled as emitter coil arrangementThey can also be contacted with drive plate after 2000, as shown in fig. 20b.
Figure 20 B show the emitter coil arrangement 2000 for the assembling for being attached to bottom layer driving device plate 2028.Work as assemblingWhen, the projection from emitter coil can be nested in emitter coil arrangement 2000, such as represent the He of projection 2008,2012Shown in 2016a-b dotted line.In some embodiments, plane is being pushed up without projection in emitter coil arrangement 2000Extend above 2032 (that is, the surfaces 2013 of the 3rd emitter coil 2006) or in the baseplane of emitter coil arrangement 2000Extend below 2030 (i.e. the surfaces 2011 of first transmitter coil 2002).Therefore, projection 2008 is extensible away from surface 2010Distance be less than the emitter coil 2006 of second transmitter coil 2004 and the 3rd convolute coil combination thickness；Equally, dash forwardPlay the winding that the 2012 extensible distances away from surface 2014 are less than first transmitter coil 2002 and second transmitter coil 2004The combination thickness of coil.Because second transmitter coil 2004 is located at the emitter coil of first transmitter coil 2002 and the 3rdBetween 2006, so part 2016a may extend away the winding line that the distance away from surface 2018 is less than the 3rd emitter coil 2006The thickness of circle, and part 2016b may extend away the convolute coil that the distance away from surface 2020 is less than first transmitter coil 2002Thickness.
In some embodiments, contact pin can be arranged to when assembling emitter coil arrangement 2000 with drivingDevice plate 2028 contacts.Therefore, those farthest emitter coils of drive plate 2028 are left in emitter coil arrangement canTheir contact pin is set to be positioned to farthest from its coil.For example, as shown in fig. 20b, the 3rd emitter coil 2006 can positionInto farthest from drive plate 2028.Therefore, contact pin 2024 may be positioned to the coil of the emitter coil 2006 of distance the 3rd mostFar so that when emitter coil arrangement 2000 is assembled, they can be contacted with drive plate 2028.In some embodimentsIn, as shown in FIG. 20 A, contact pin 2024 is positioned to the distance 2028 of surface 2014 away from the 3rd emitter coil 2006, contactsPin 2022 is positioned to the distance 2030 of surface 2020 away from second transmitter coil 2004, and contacts pin 2026 and be positioned toThe distance 2032 of surface 2011 away from first transmitter coil 2002.Therefore, distance 2028 can be more than distance 2030 and 2032, away from2028 but distance 2032 is greater than with a distance from being smaller than from 2030, and distance 2032 is smaller than distance 2028 and 2030.Pass throughThe contact pin of each emitter coil is arranged according to these distances, contact pin can be positioned to the drive plate with bottom2028 contacts, as shown in fig. 20b, even if from the coil that they are coupled at the distance different away from drive plate 2028.
It should be appreciated that contact pin 2022,2024 and 2026 extends towards drive plate 2028, but regardless of projectionThe direction that 2016a-b, 2012 and 2008 extends.For example, even if the projection 2008 of first transmitter coil 2002 upwardly extends,The contact pin 2026 of first transmitter coil 2002 extends downwardly towards drive plate 2028.Contact the He of pin 2022,20242026 extend towards drive plate 2028 to be contacted with drive plate 2028 so that 2028 operable emitter coil of control panelTo perform wireless charging.
V. do not have the emitter coil of bobbin
The foregoing embodiments being discussed herein are related to the emitter coil cloth formed by the emitter coil with bobbinPut.It will be appreciated, however, that do not required by the transmitting with bobbin according to the emitter coil of the embodiment of disclosure arrangementDevice coil is formed.In some embodiments, emitter coil arrangement can be formed by the emitter coil without bobbin, andAnd still realize the covering of emitter coil arrangement identical, performance and the efficiency with being formed by the emitter coil with bobbin.
Figure 21 shows the exemplary transducer coil without bobbin of some embodiments according to the disclosure2100.Emitter coil 2100 may include the coil 2102 being wrapped between inside radius 2104 and outer radius 2106.Coil 2102It can be formed, be formed similar to the coil 1200 in Figure 12 A, or by single conductive material, similar to Figure 13 A by more fine rulesIn coil 1300.
In some embodiments, coil 2102 can be wound up into terminal location 2110 from initial position 2108.Initial position2108 can be the position for starting winding along the line of coil 2102, and terminal location 2110 can be the line along coil 2102Terminate the position of winding.Line can not be separated from each other substantially between initial position 2108 and terminal location 2110.In some embodiments, terminal location 2108 can be positioned based on initial position 2108, to realize substantially homogeneous winding wheelIt is wide.For example, terminal location 2108 may be positioned to directly from initial position 2108 across convolute coil 2102.By by this wayInitial position 2108 and terminal location 2110 are positioned, the quantity of winding can be substantially equal so as to realize as close possible to overall integerEven winding profile.Substantially homogeneous winding profile may be such that there is the circle different from the remainder of emitter coil 2100The size of several parts 2116 minimizes, as discussed herein in regard to Figure 14 A and Figure 14 C.In addition, can be according to true by designingFixed target inductance value determines the number of turn.When forming more numbers of turn in transmitter coil, the inductance of emitter coil increasesAdd.In emitter coil there is too many inductance can produce poorly efficient electric power transmission.In specific embodiments, the number of turn canChange between six to eight circles, such as seven circle in some embodiments.
Emitter coil 2100 may also include first terminal end 2112 and second terminal end 2114.Each terminal endPortion 2122 and 2214 can be the point that coil 2102 physically terminates.It is different from the emitter coil with bobbin, second terminal endPortion 2114 will not can be folded to be positioned in the internal diameter of emitter coil 2100 on coil 2102.On the contrary, second terminal end2114 can begin to deviate from coil 2102 at terminal location 2110, and stop outside coil 2102.First terminal end andTwo terminal ends 2112 and 2114 can be with first terminal area and the coupling of second terminal area 2118 and 2120 with the driving with bottomPlate contacts.First terminal area 2118 can be located in the internal diameter of emitter coil 2100, but second terminal area 2120 can be located at transmittingOutside the internal diameter of device coil 2100.In some embodiments, when emitter coil 2100 is assembled in emitter coil arrangementWhen, second terminal area 2120 can be positioned in another emitter coil, as relative Figure 22 is discussed herein.
Figure 22 A show being formed by the emitter coil without bobbin according to some embodiments of the disclosureExemplary transducer coil arrangement 2200.The position of emitter coil in emitter coil arrangement 2200 can be by according to assemblingRelevant position shown in period Figure 22 A limits the carrier of the position of emitter coil to control.Each carrier may include to limit hairThe mesa array of the position of emitter coil.Boss can be prominent from carrier surface and provides emitter coil and can surround its positioningStructure.In some embodiments, emitter coil is held in place by each carrier temporarily, until they are fixed to driveContact on dynamic device plate.The different layers that each carrier can be arranged specific to emitter coil.Once emitter coil is fixed toOn drive plate, then carrier can be removed, and emitter coil is stayed in into their own position so as to be arranged according to emitter coilPut.Every layer is singly assembled, the emitter coil arrangement formed until all layers are assembled shown in Figure 22.As hereinIt will be further discussed, every layer of emitter coil in emitter coil arrangement 2200 can be secured in position by radome fairing.
Each emitter coil can be along the coupling in the interior zone suitable for minimizing emitter coil arrangement 2200Radial direction is arranged, while also enables the terminal end of each emitter coil to be contacted with drive plate (not shown).ClassThe emitter coil arrangement 1900 being similar in Figure 19, emitter coil arrangement 2200 can be according to the transmitter shown in Figure 10-11CCoil is arranged and is arranged in three transmitter line ring layers.Therefore, emitter coil arrangement 2200 may include external transmitter coil2202 and interior emitter coil 2204.External transmitter coil 2202 can be the most outskirt positioned at emitter coil arrangement 2200The single line of emitter coil near domain, and interior emitter coil 2204 can be that surrounded by external transmitter coil 2202A little emitter coils.
In some embodiments, external transmitter coil 2202 can be arranged with first radial arrangement, wherein its radial direction sideTo the outward flange for pointing to emitter coil arrangement 2200 so that they have the region of the different numbers of turn, such as the region in Figure 212116, towards the outward flange of emitter coil arrangement 2200.Therefore, there is more multiturn and the external transmitter compared with lower coupling tendencyThe part of coil 2204 can concentrate the inside towards emitter coil arrangement 2200.This helps to ensure that wireless charging electrical pad is being filledThere is more consistent and effective charging surface in the interior zone in ammeter face.In addition, interior emitter coil 2204 can be withThe second different radial arrangement of first radial arrangement is arranged.Second radial arrangement can be interior emitter coil 2204 according to phaseThe position for offseting to arrange for mutual different angle, as shown in figure 22.For example, in some embodiments, interior transmitterCoil 2204 can be with the angle arranged offset of 50-70 degree, particularly 60 degree.Interior transmitter is arranged according to the second radial arrangementCoil 2204 allows its terminal end to reach following interconnection structure by being terminated in the internal diameter of adjacent transmitter coil.
In view of the emitter coil without bobbin does not have folded portion, the plane also not having from coil winding is dashed forwardThe bobbin gone out, interior emitter coil 2204 need not be nested in adjacent layer to minimize the radial direction of z-height along by projectionArrangement.On the contrary, interior emitter coil 2204 can only need to be arranged such that their second terminal end can be with the drive of bottomDynamic device plate (not shown) contact.When second terminal area is positioned such that they are not stopped by another emitter coil, hairThe second terminal end of emitter coil can contact with the drive plate of bottom.Therefore, for interior transmitter coils 2204Two termination environments can be located in the internal diameter of adjacent transmitter coil.As shown in figure 22, interior emitter coil 2204 can be with various radial directionsDirection arranges that the angle between 50 degree and 70 degree is offset to offset each other, such as about 60 degree in some embodiments.WithThis mode arranges that interior emitter coil 2204 allows their second terminal area to be located in the internal diameter of adjacent transmitter coil,So that their second terminal end can contact with the drive plate of bottom.
Can be seen that from Figure 22 A, each emitter coil can have outer terminator 2208 and interior terminator 2206, whereinCorresponding terminal end is resident.As described herein, each termination environment can be the region that terminal end is positioned.Terminal end canIt is the point that the winding of respective transmitter coil physically terminates, but if they are with being used for what is be connected with bottom layer driving device plateBearing couples, then its electrical connection can continue.Outer termination environment 2208 can be positioned at its respective transmitter coil (for example, transmitter lineThe termination environment of the outside diameter of circle 2210).Interior termination environment 2208 can be the end in its corresponding emitter coil internal diameterPetiolarea.Therefore, external transmitter coil can have the outer termination environment near the neighboring of emitter coil arrangement, and interiorEmitter coil can have the outer termination environment in the internal diameter of adjacent transmitter coil.For example, emitter coil 2212 can quiltIt is positioned as interior emitter coil and with the outer termination environment 2214 in the internal diameter of adjacent transmitter coil 2218.
Assuming that each emitter coil has two termination environments, it will be understood that, emitter coil arrangement can have manyFor the termination environment coupled with bottom layer driving device plate.In many cases, the position of these termination environments can influence emitter coilThe operating efficiency of arrangement.Therefore, in some embodiments, the termination environment of emitter coil arrangement can be arranged to oneThe similarity of degree is determined, to improve the improvement of the simplicity of design and operating efficiency, as discussed herein in regard to Figure 22 B-22E's.
Figure 22 B are the exemplary transducers being made up of emitter coil for showing some embodiments according to the disclosureThe simplification figure of coil arrangement 2201, the emitter coil is without bobbin and with the terminal end similarly organized.TransmittingDevice coil arranges that 2,201 22 emitter coils by being arranged to arranged superposed are formed so that the different coils in multiple coilsOn a different plane, and emitter coil arrangement each emitter coil have be located at from every other transmitter lineThe central axis of the central axis lateral separation of circle, as discussed herein in regard to Fig. 3-7C.According to some implementations of the disclosureScheme, the tissue of termination environment can be led according to the basic pattern that the termination environment repeated is substantially arranged throughout emitter coilGo out.For example, emitter coil arrangement 2201 can have the termination environment according to the general location of basic pattern 2220.In some implementationsIn scheme, basic pattern 2220 in Figure 22 B with the termination environment of five emitter coils shown in thick line by being established.Except most leftOutside side and the termination environment of rightmost side emitter coil, the termination environment of basic pattern 2220 can be arranged throughout emitter coil2201 most of repetition.Those leftmost sides and the termination environment of rightmost side emitter coil can be oriented so that a terminalArea is in coil outer, and another termination environment is in coil inside.
The more detailed view of emitter coil in emitter coil arrangement 2201 can be seen in Figure 22 C-E.Figure22C-E is the simplification figure of the set of transmitter in every layer of emitter coil arrangement 2201.Figure 22 C show first group of hairThe angle orientation of emitter coil 2222.As shown in fig. 22 c, the emitter coil 2228b between external transmitter coil,2228c, 2228e and 2228f can have vertically upward or downward angle is orientated, except when arranging 2201 with emitter coilThe emitter coil 2228g of rightmost side during arrangement.The emitter coil 2228a and 2228d being positioned between interior emitter coilThere can be angular orientation vertically upward.As shown in figure 22d, the emitter coil being positioned between external transmitter coil2230a, 2230b, 2230d, 2230e, 2230g and 2230h can have vertically upward or downward angle is orientated.Positioned at interior hairEmitter coil 2230c and 2230f between emitter coil can have angular orientation vertically upward.Also, such as Figure 22 E institutesShow, the emitter coil 2232c, 2232b, 2232e and 2232f between external transmitter coil can with, have vertically upwardOr downward angle orientation, except when the emitter coil 2232a with rightmost side during emitter coil 2201 arrangement of arrangement.It is fixedEmitter coil 2232d and 2232g of the position between interior emitter coil can have angular orientation vertically upward.
Understood such as by Figure 22 C-E, the external transmitter coil of emitter coil arrangement can along vertically upward orAngle direction arrangement downward vertically, in addition to the emitter coil of the leftmost side and the rightmost side.Also, emitter coil clothThe interior emitter coil put can be arranged along the angle direction of equidirectional (for example, vertically upward).So, emitter coilThe position of the termination environment of emitter coil in arrangement 2201 can be substantially similar each other, designs and improves so as to simplifyCharge efficiency.
Different from the emitter coil with axis, the axis have extend below the plane of coil with bottomThe contact pin of drive plate contact, the emitter coil without axis can be by connecing with the Self-Clinching Standoffs that surface is installedTouch and contacted with bottom layer driving device plate, the Self-Clinching Standoffs of surface installation has once on drive plate the bottom of fromThe layer elevated contact pad of drive plate.Therefore, contact pad can be positioned in the respective transmitter coil phase coupled with themIn same plane.The details of such bearing will be further described herein.
VI. wireless charging pad assembly
Figure 23 shows the example wireless of the emitter coil with bobbin of some embodiments according to the disclosureThe exploded view of charging pad 2300.Emitter coil with bobbin may correspond to the transmitter discussed herein in regard to Figure 16 A-20BCoil.Wireless charging electrical pad 2300 may include the shell formed by two housings：First housing 2302 and the second housing 2304.TheOne housing 2302 can coordinate to form inner chamber with the second housing 2304, and internal part can be positioned in inner chamber.Specifically,The surface of first housing 2302 and the second housing 2304 can form the wall for limiting inner chamber.For example, the first housing 2302 can haveHave to form the lower surface of the first wall of the top boundary for limiting inner chamber.Limited in addition, the second housing 2304 can have to be formedThe top surface of second wall of the bottom boundary of inner chamber.First housing 2302 and the second both side surfaces of housing 2304 canSide wall with the horizontal boundary for forming inner chamber.First housing and the second housing 2302 and 2304 can also be respectively included inOne housing and the second housing 2302 and 2304 form the recess 2306a and 2306b of opening in shell when coordinating.Such as socketThe electric connector 2308 of connector can be positioned in opening so that wireless charging electrical pad 2300 can be by being connected to electric connector2308 cable receives electric power from external power source.In some embodiments, electric connector 2308 may include multiple contact pinsWith the multiple terminals for being conductively coupled to contact pin so that electric power can be routed to wireless charging electrical pad 2300 from external power source, to provideElectric power for wireless power transmission.
First housing and the second housing 2302 and 2304 can be formed by more than one layer.For example, the first housing 2302 canIncluding top cover 2310, compliant layer 2312 and enhancement layer 2314.In certain embodiments, compliant layer 2312 may be provided atBetween top cover 2310 and enhancement layer 2314.Top cover 2310 exposes when can be assembling wireless charging electrical pad 2300Decorative layer.According to some embodiments, the top surface of top cover 2310 includes charging surface 2316, and can place hasThe equipment 2340 of wireless power receiver coil 2342 on charging surface 2316 with from wireless charging electrical pad 2300 receive electric power.The size and size of charging surface 2316 can be encapsulated in by one or more between the first housing and the second housing 2302 and 2304Emitter coil arrangement (such as emitter coil discussed in this article arrangement) limit.
Enhancement layer 2314 can be the rigid structure for giving the structural intergrity of wireless charging electrical pad 2300.Any conjunction can be usedSuitable rigid material such as glass fibre forms enhancement layer 2314.Compliant layers 2312 can be positioned under top cover 2310Side, to provide soft pillow shape texture, for being put when equipment is contacted to receive electric power with top cover 2310 for itPut.Compliant layers 2312 can be formed by any suitable conformable material, such as foam or any other porous material.
Second housing 2304 may include bottom covers 2318, bottom chassis 2320 and pay off rack 2322.In some implementationsIn scheme, bottom chassis 2320 can be positioned between bottom covers 2318 and pay off rack 2322.Bottom covers 2318 can be withIt is the outer cover exposed when assembling wireless charging electrical pad 2300.Bottom chassis 2320 can be used to wireless charging electrical pad2300 provide the rigid structure of the rigidity of structure.In some embodiments, bottom chassis 2320 can be by any suitable rigid materialMaterial is formed, such as glass fibre or carbon fiber.Pay off rack 2322 can be the structure for the trunk to form wireless charging electrical pad 2300Supporting layer.In some embodiments, pay off rack 2322 is rigidity plastics layer, is formed with multiple openings 2348.Each openMouth 2348 may be formed to have the size corresponding to electronic equipment, such as operating the inverse of one or more emitter coilsBecome device, as discussed further herein.
As described above, top shell 2302 and bottom shell 2304 can coordinate to form inner chamber.As shown in figure 23 is severalIndividual internal part can internally positioned intracavitary.Intraware may include the detection coil 2324 positioned at the lower section of the first housing 2302.InspectionTest coil 2324 can be designed to the arrangement of the coil of preset frequency operation so that detection coil 2324, which can detect, to be located atThe presence of the equipment in top cover 2310 in charging surface 2316.
In some embodiments, intraware may also include the emitter coil for being arranged on the lower section of detection coil 2324Arrangement 2326.According to some embodiments of the disclosure, emitter coil arrangement 2326 can be by the transmitter of multiple general planarsCoil is formed, and the emitter coil arrangement of the plurality of general planar in multiple layers, and is arranged with overlapping and non-concentric construction, itsIn there is no two coils concentrically with respect to one another.In other words, each emitter coil can have central axis, and the central axis is located atAt the lateral separation of central axis away from the every other emitter coil in multiple emitter coils.For example, transmitter lineCircle arrangement 2326 may include three layers of emitter coil (for example, first layer 2328, the second layer 2330 and third layer 2332), whereinEvery layer of multiple emitter coils for including arrangement coplanar with each other.Some exemplary emitter coil arrangements include hereinbeforeFig. 8, Figure 10, Figure 19 and Figure 22 in emitter coil arrangement 800,1000,1900 and 2200.Emitter coil is arranged2326 can be formed by twisted emitter coil, as discussed herein in regard to Figure 16 A-16B and Figure 18 A-18B.At some itsIn his embodiment, emitter coil arrangement 2326 is formed as the pattern conductive linear array in PCB.
Emitter coil arrangement 2326 can be operated to create the time-varying propagated above the top surface of the first housing 2302Magnetic field, to induce electric current in the receiver coil 2342 in electronic equipment 2340.Produced by emitter coil arrangement 2326The covering of time-varying magnetic field can be consistent with the size of charging surface 2316.In some embodiments, emitter coil is arrangedEach emitter coil in 2326 includes the coil wound in same direction.On the other hand, receiver coil 2342 may includeThe coil wound with the direction opposite with emitter coil.For example, the edge of each coil in emitter coil arrangement 2326Wind clockwise, and the coil of receiving coil 2342 is wound in the counterclockwise direction.
In some embodiments, ferrite layer 2334 may be provided at the lower section of emitter coil arrangement 2326.Ferrite layer2334 can be ferromagnetic material layers, and it is configured as preventing magnetic field caused by emitter coil arrangement 2326 from destroying to be arranged on hairThe part of the lower section of emitter coil arrangement 2326.The size and dimension of ferrite layer 2334 may correspond to charging surface 2316 and/orEmitter coil arrangement 2326.In certain embodiments, ferrite layer 2334 can be located at first transmitter coil layer 2328 justLower section.In such embodiment, first transmitter coil layer 2328 may include have than second transmitter coil layer and theThe coil of the less number of turn of coil in three transmitter line ring layers 2330 and 2332.Ferrite layer 2334 may include to correspond to transmittingMultiple openings of the position of the contact pin of emitter coil in device coil arrangement 2326.Multiple openings allow transmitter lineEnclose and be arranged on the component contact of the lower section of ferrite layer 2334.For example, multiple openings can allow emitter coil and be arranged on ironThe drive plate 2336 of the lower section of oxysome layer 2334 contacts.
The electrical interconnection of drive plate 2336 but PCB, flexible circuit, patterning ceramic wafer, patterned silicon substrate etc.Structure, it is configured as route signal and the electric power for operating emitter coil arrangement 2326.In some embodiments, driveThe corresponding contact pin for the emitter coil that dynamic device plate 2336 includes being positioned to arrange in 2326 with emitter coil contacts moreIndividual contact 2346.Multiple inverters can be arranged on driver PCB 2336 downside, for operating emitter coil arrangement 2326In emitter coil.Each inverter can be located at opening position corresponding to the respective transmitter coil contacted with the inverter.In some embodiments, multiple inverters can be surface mounted to driver PCB 2336 basal surface so that they are drivingThe lower sections of device PCB 2336 extend.Therefore, multiple inverters can be plugged into the respective openings 2348 in pay off rack 2322.Opening2348 can be positioned corresponding to the position of the corresponding inverter on driver PCB 2336.As shown in figure 23, recess 2350May be formed in ferrite layer 2334 and driver PCB 2336, for assembling when socket connector 2308 be positioned in nothingIn micro USB electrical pad 2300.
In some embodiments, ground loop 2338 can be along at least a portion of driver PCB 2336 neighboringWinding.Ground loop 2338 can be except socket connector 2308 is couple to driver along driver PCB2336The conductor wire of the neighboring winding of PCB2336 position.
Figure 24 show according to some embodiments of the disclosure have without bobbin emitter coil it is exemplaryThe exploded view of wireless charging electrical pad 2400.Emitter coil without bobbin may correspond to what is discussed herein in regard to Figure 21 and 22Emitter coil.Similar to wireless charging electrical pad 2300, wireless charging electrical pad 2400 may include the shell formed by two housings：TheOne housing 2402 and the second housing 2404.First housing 2402 can coordinate with the second housing 2404 to form inner chamber, internal portionPart can be positioned in inner chamber.Similar to wireless charging electrical pad 2300, the first housing 2402 and the 2nd 2404 can also include respectivelyThe recess 2406a and recess 2406b of opening are formed in shell when the first housing the 2402 and the 2nd 2404 coordinates.Such as insertThe electric connector 2408 of base connector can be located in opening so that wireless charging electrical pad 2400 can be by being connected to electric connector2408 cable receives electric power from external power source.In some embodiments, electric connector 2408 may include multiple contact pinsWith the multiple terminals for being conductively coupled to contact pin so that electric power can be routed to wireless charging electrical pad 2400 to provide from external power sourceThe electric power of wireless power transfer.
First housing 2402 and the second housing 2404 can be formed by more than one layer.For example, the first housing 2402 can wrapInclude top cover 2410 and enhancement layer 2412.Top cover 2410 can be the dress exposed during assembling wireless charging electrical pad 2400Adorn layer.According to some embodiments, the top surface of top cover 2410 includes charging surface 2414, in the charging surfaceThe device 2416 with wireless power receiver coil 2415 can be placed on 2414 to receive electric power from wireless charging electrical pad 2400.The size and size of charging surface 2416 can be by be encapsulated between the first housing 2402 and the second housing 2404 one or moreIndividual emitter coil arranges (for example, any emitter coil arrangement discussed in this article) to limit.
In some embodiments, top cover 2410 may include the compliant layer for being arranged on the lower section of charging surface 2414(not shown).Compliant layer can be configured to supply the pillow shape texture of softness, for being contacted when equipment with top cover 2410Shelved thereon during receiving electric power.Compliant layer can be formed by any suitable conforming materials, such as foam or any other is morePorous materials.Enhancement layer 2414 can be positioned on the lower section of top cover 2410, and is made up of rigid structure, and it provides wireless chargingThe structural intergrity of electrical pad 2400.Any suitable rigid material can be used to form enhancement layer 2414, such as glass fibreOr rigid polymer (for example, Kalix of molding).
Second housing 2404 may include bottom covers 2418 and bottom chassis 2420.In some embodiments, bottomChassis 2420 can position against bottom covers 2418 so that when assembling wireless charging electrical pad 2400, bottom chassis 2420 does not showGo out.Bottom covers 2418 can be the outer covering exposed when assembling wireless charging electrical pad 2400.Bottom chassis 2420, which can be, to be usedIn the rigid structure that the rigidity of structure is provided for wireless charging electrical pad 2400.In some embodiments, bottom chassis 2420 can be by appointingWhat suitable rigid material is formed, such as glass fibre, carbon fiber or stainless steel.
As described above, top shell 2402 and bottom shell 2404 can cooperatively form inner chamber.It is various interior as shown in Figure 24Portion's part can be located at interior intracavitary.For example, internal part may include emitter coil arrangement 2429.According to some realities of the disclosureScheme is applied, emitter coil arrangement 2429 can be formed by the emitter coil of multiple general planars, the hair of the plurality of general planarEmitter coil is with multilayer and overlapping and non-concentric arrangement, without two coils concentrically with respect to one another.For example, emitter coilArrangement 2429 may include three layers of emitter coil (for example, first layer 2428a, second layer 2428b and third layer 2428c), itsIn every layer of multiple emitter coils for including arrangement coplanar with each other.Some exemplary transducer coils arrangement includes having windingEmitter coil on bobbin, all emitter coil arrangements 800,1000 in Fig. 8, Figure 10 and Figure 19 as discussed in this articleWith 1900, and including the emitter coil not on bobbin, all emitter coils shown in Figure 22 as discussed in this articleArrangement 2200.In addition, emitter coil arrangement 2429 can have any appropriate number of emitter coil.For example, transmitterCoil arrangement 2429 can have 16 coils altogether, the emitter coil arrangement 605 in such as Fig. 6 D, or 22 coils altogether,Emitter coil arrangement 607 in such as Fig. 6 E.
Emitter coil arrangement 2429 can be operated to create the time-varying propagated above the top surface of the first housing 2402Magnetic field, to induce electric current in the receiver coil 2415 in electronic equipment 2416.Produced by emitter coil arrangement 2429The covering of time-varying magnetic field can be overlapped with the size of charging surface 2416.
Wireless charging electrical pad 2400 may also include multiple radome fairings 2431 for accommodating emitter coil arrangement 2429.ExampleSuch as, multiple radome fairings 2431 may include the first radome fairing 2430a, the second radome fairing 2430b and the 3rd radome fairing 2430c.EachRadome fairing can be the substantially flat structure with opening 2431a-c, and emitter coil can be located in the opening.For example, theOne radome fairing 2430a, which can accommodate first transmitter coil layer 2428a, the second radome fairing 2430b, can accommodate second transmitter coilLayer 2428b, and the 3rd radome fairing 2430c can accommodate the 3rd transmitter line ring layer 2428c.When emitter coil be contained in it is wholeWhen in stream cover, emitter coil can be limited in its respective position by radome fairing, and prevent them from being moved in any transverse direction.The some parts of each radome fairing can also reside in the internal diameter of emitter coil, to avoid any free space in this layer.Free space can allow the deflection of the structure in adjacent layer, and this can cause the physical stress on one or more parts and causeUndue wear and tear.In some embodiments, each radome fairing 2430a-c thickness is equal to the thickness of emitter coilDegree.Therefore, when emitter coil is contained in corresponding radome fairing, radome fairing and emitter coil are combined to be formed at itInside does not have the substantially planar structure of big open space.
In some embodiments, wireless charging electrical pad 2400 may also include for by each transmitter line ring layer and wholeStream covers separated one or more distance pieces.For example, wireless charging electrical pad 2400 may include the first distance piece 2444a, the second intervalPart 2444b and the 3rd distance piece 2444c.First distance piece 2444a can be positioned on first transmitter coil layer 2428a and secondOpened between transmitter line ring layer 2428b so that two transmitter line ring layers 2428a and 2428b are divided by the first distance piece 2444aThe setpoint distance that is limited of thickness.Similarly, the second distance piece 2444b can be positioned on second transmitter coil 2428b andOpened between 3rd transmitter line ring layer 2428c so that two transmitter line ring layers 2428b and 2428c are divided by the second distance pieceThe setpoint distance that 2444b thickness is limited.In addition, the 3rd distance piece 2444c can be positioned on the 3rd transmitter line ring layerBetween 2428c and electromagnetic shield 2422 with they are separated the setting that is limited of thickness by the 3rd distance piece 2444c away fromFrom.In some embodiments, distance piece 2444a-c thickness is equal so that each transmitter line ring layer 2428a-cIt is separated from each other identical distance with electromagnetic shield 2422.Distance piece 2444a-c purpose is to limit adjacent conductive layer (exampleSuch as, transmitter line ring layer 2428a-c and electromagnetic shield 2422) between parasitic capacitance degree.By by between conductive layerSpace be defined to equal, this provides increased sensitiveness to detect the foreign matter on charging surface 2414, particularly in high frequencyIn rate scope.
During wireless power transmission, emitter coil arrangement 2429 can be produced for feeling in receiver coil 2415The time-varying magnetic field of phase induced current should be gone out.If these caused magnetic fields are uncontrolled, it can produce noise and peripheral parts are madeInto adverse effect.Therefore, emitter coil arrangement 2429 can be surrounded to limit magnetic field by several parts so that they are at oneProduced and without interference with adjacent component on direction.In some embodiments, part includes ferro-magnetic shield part 2432, electromagnetismShielding part 2422, ground connection fence 2424 and drive plate 2426, this will be further described herein.
Ferro-magnetic shield part 2432 can be arranged on the lower section of emitter coil arrangement 2429 and be configured as preventing transmitter lineThe ferromagnetic material layers for the part for being arranged on the lower section of ferro-magnetic shield part 2432 are destroyed in magnetic field caused by circle arrangement 2429.Ferro-magnetic shieldPart 2432 can be sized and shape according to charging surface 2416 and/or emitter coil arrangement 2429.In some embodiment partyIn case, ferro-magnetic shield part 2432 can be positioned on first transmitter coil layer 2428a underface.In such embodiment, theOne transmitter line ring layer 2428a may include to have than second transmitter coil layer 2428b and the 3rd transmitter line ring layer 2428cIn the less number of turn of coil coil.Ferro-magnetic shield part 2432 may include the hair corresponded in emitter coil arrangement 2429Multiple openings of the position of the contact pin of emitter coil.Multiple openings allow emitter coil and are arranged on ferro-magnetic shield partPart (such as drive plate 2426) contact of 2432 lower sections.
As described herein, electromagnetic shield 2422 also is included in wireless charging electrical pad 2400.Electromagnetic shield 2422 canPositioned at the lower section of the first housing 2402, and can be configured as preventing from producing on receiver coil during wireless power transmissionUnwanted voltage.Specifically, electromagnetic shield 2422 can be configured as intercepting wireless charging electrical pad 2400 during wireless power transmissionElectric field caused by interior emitter coil so that prevent that generation is harmful on receiver coil (such as receiver coil 2415)Voltage.The structure and material composition of electromagnetic shield 2422 is discussed further herein relative to Figure 25 A and 25B.
Figure 25 A are the top views according to the exemplary electrical magnetic shield 2500 of some embodiments of the disclosure.Electromagnetic screenShield 2500 may include shield 2502 and the conductive border 2504 around the periphery of shield 2502.Shield 2502 can blockOne or more of wireless charging electrical pad 2400 electric field caused by emitter coil is cut, and by as caused by the electric field interceptedVoltage discharges into ground by conductive border 2504.In some embodiments, shield 2502 is by with enabling magnetic fluxEnough the material of property that electric field passes through is prevented to form by shield.For example, shield 2502 can be pressure-sensitive viscous by being laminated toSilver formation in mixture layer (PSA).In one embodiment, silver layer may have about 40 μm of 30-, particularly 35 μm of thicknessDegree.As Figure 25 A are further illustrated, conductive border 2504 is configurable to the thin conductive region around shield 2502；However,Embodiment not limited to this.Other embodiments can have the different configuration of conductive border 2504, as shown in Figure 25 B.
Figure 25 B are the top views according to the another exemplary electromagnetic shield 2501 of some embodiments of the disclosure.ElectricityMagnetic shield 2501 may include shield 2502 and extend to (all any transmittings as discussed herein of emitter coil arrangementDevice coil arrange) edge conductive border 2506.By the side that conductive border 2506 is extended to emitter coil arrangementEdge, magnetic field can be enhanced through the efficiency of transmission of electromagnetic shield 2501 compared to the efficiency of transmission of electromagnetic shield 2500.
Conductive border 2504 and 2506 can be formed by the conductive material of such as copper.Conductive bezels 2504 and 2506 can be viscousThe scale copper being attached on the surface of shield 2502.The conduction property of conductive border 2504 and 2506 allows the electric field by interceptingCaused voltage is routed to ground.In some embodiments, voltage can be routed to ground connection fence by conductive border 2504, allFence 2424 is grounded as of fig. 24.
Referring again to shown in Figure 24 and as described above, according to some embodiments of the disclosure, wireless charging electrical pad 2400It may include to be grounded fence 2424.Being grounded fence 2424 can wind simultaneously along at least a portion of the neighboring of drive plate 2426And it is attached at least a portion of the neighboring of electromagnetic shield 2422.Being grounded fence 2424 can be by the line with conductive characteristicLength and prevent magnetic field by be grounded fence 2422 propagate shielding properties formed.For example, ground connection fence 2422 can be by goldCategory is formed, for example, steel or coating metal, such as nickel-plated steel.
Drive plate 2426 can be configured as routeing the signal and electric power for operating emitter coil arrangement 2429PCB.In some embodiments, drive plate 2426 may include multiple bond pads 2442, for via multiple bearings by electricityPower is routed to emitter coil arrangement 2429, as discussed further herein.Electric connector 2408 can be arranged on drive plateOn 2426 so that drive plate 2426 can receive electric power to operate emitter coil arrangement 2429 from external source.Drive plate2426th, encirclement emitter coil can be formed by being grounded the combination of fence 2424, ferro-magnetic shield part 2432 and electromagnetic shield 2422Arrangement 2429 is with the faraday cup of control transmitting of time-varying magnetic field as caused by emitter coil arrangement 2429.For example, faradayCage in one direction can guide magnetic flux from faraday cup, while substantially prevent magnetic flux in every other sideUpwardly propagate out faraday cup.It is better understood from Figure 26 A and 26B entering with different viewpoints for the faraday's cageGo and discussed and show.
Figure 26 A are the transmitter lines of the wireless charging electrical pad formed according to the surrounding portion of some embodiments of the disclosureThe cross-sectional view of a part for the faraday cup of circle 2429 (not shown) of arrangement.It should be appreciated that emitter coil arrangement 2429 is notShow, because the edge of faraday cup is illustrate only, and emitter coil arrangement 2429 is located remotely from the side of faraday cupEdge, but the edge of multiple radome fairings 2431 can be seen.Moreover, it will be appreciated that the part of faraday cup shown in Figure 26 A is onlyFor the side of wireless charging electrical pad, and it will be appreciated by those skilled in the art that the diagram represents the substantially institute of wireless charging electrical padThere is edge.As shown in fig. 26, multiple radome fairings 2431 (and emitter coil arrangement 2429) by by electromagnetic shield 2422, connectThe faraday cup that ground fence 2424, ferro-magnetic shield part 2432 and drive plate 2426 are formed surrounds.
According to some embodiments, faraday cup can be configured as allowing magnetic flux to propagate in one direction.For example, connectGround fence 2424 can be configured as substantially resisting the magnetic flux from emitter coil arrangement 2429 by being grounded fence 2424Propagation so that magnetic field is comprised on the horizontal direction in faraday cup.In addition, ferro-magnetic shield part 2432 can be configured asMagnetic flux is redirected, to substantially eliminate from emitter coil arrangement 2429 to (the i.e. downward and remote farad of drive plate 2426Cage) magnetic flux propagation.However, electromagnetic shield 2422 can be configured as allowing magnetic flux to propagate through so thatMagnetic flux is directed out faraday cup along single direction (such as upwardly toward receiver coil in electronic equipment).Pass throughFor configuration faraday cup to allow the propagation of magnetic flux in one direction, faraday cup can prevent caused magnetic flux wirelessNoise is produced in other electrical systems in charging pad, while purposefully allows magnetic flux edge towards the side of receiver coilTo propagating to perform wireless charging.
In some embodiments, electromagnetic shield 2422 is attached to ground connection fence 2424 so that during wireless chargingCaused voltage can be discharged into ground in electromagnetic shield 2422.In some cases, the conductive side of electromagnetic shield 2422Boundary 2506 is attached to ground connection fence 2424 by laser welding, to realize firm electrical connection and physical connection.In addition, ironMagnetic shield 2432 can be located on the surface of drive plate 2426, to mitigate propagation of the magnetic flux to drive plate 2426.OneIn a little embodiments, ferro-magnetic shield part 2432 be located on drive plate 2426 and laterally away from being grounded on fence 2424,So that ferro-magnetic shield part 2432 is not between ground connection fence 2424 and drive plate 2426.By not being attached ferro-magnetic shield part2432, its friable structure will not be exposed to the physical stress of the interface between ground connection fence 2424 and drive plate 2426,So as to minimize the damage to ferro-magnetic shield part 2432.
Mentioned by electromagnetic shield 2501 as shown in herein in connection with Figure 25 B, conductive border 2506 adheres to shieldingBody 2502.In some embodiments, one or more adhesives can be used for conductive border 2506 being attached to shield 2502Edge.Figure 26 B are the close-up sections at the interface between shield 2502 and conductive border 2506.As illustrated, conductive sideBoundary 2506 can be attached to shield 2502 by adhesive phase 2602 and 2604.Adhesive phase 2602 and 2604 can be any conjunctionSuitable electroconductive binder, such as one side copper strips or double-side copper band.In certain embodiments, adhesive phase 2602 is double-side copper bandLayer, and adhesive phase 2604 is single-sided adhesive tape layer.Allow what is captured in electromagnetic shield 2502 using electroconductive binderVoltage is routed to ground connection fence 2424 by conductive border 2506.Although Figure 26 B show conductive border 2506, should manageSolution, this disclosure are also applied for the embodiment for wherein using conductive border 2504.In some embodiments, shieldThe useful binders of shield 2422 are fixed to the 3rd rectification cap layer 2430c so that it will not substantially move position during usePut.For example, shielding part 2422 can be fixed by such as PSA adhesive 2606.
As discussed herein, drive plate can be configured as operating the PCB of emitter coil arrangement.Therefore, refer toFigure 24, according to some embodiments of the disclosure, drive plate 2426 can be conductively coupled to transmitter line via multiple bearings 2434Emitter coil in circle arrangement 2429.In some embodiments, each bearing is couple to corresponding pad 2442, is used forRealize the power transmission of the arrangement 2429 from drive plate 2426 to emitter coil.Bearing 2434 can be configured as in driverElectric power is route between plate 2426 and every layer of emitter coil arrangement 2429.For example, bearing 2434 can be made up of multiple conductive poles,Electric power can be routed to the opposite end of post by these conductive poles from one end of post, as discussed herein with reference to Figure 27 A-B and 28A-B's.
Figure 27 A and 27B show the exemplary support 2700 according to some embodiments of the disclosure.Bearing 2700 canIncluding the second contact 2704 on the first contact 2702 and opposite end on one end.Connector 2706 can be by the first contact 2702It is conductively coupled to the second contact 2704 so that electric power can be route between contact 2702 and contact 2704.In some embodimentsIn, the first contact 2702, the second contact 2704 and connector 2706 form an overall structure, are shaped like in its sideInclined letter " U " on face.When applying pressure in vertical direction, the overall structure can have a certain degree of machinery suitableYing Xing.Therefore, in some embodiments, the first contact 2702, the second contact 2704 and connector 2706 can be by highly conductivesSubstantially rigid material formed, such as conductance for copper conductance about 60%-90% copper alloy.Some are exemplaryCopper alloy include but is not limited to NKC4419, NKE 010 and C19210.
In addition to the conductive material strong using mechanical strength is used to form overall structure, individually support also can be usedStructure strengthens bearing 2700.For example, support member 2708 can between the first contact 2702 and the second contact 2704, withThe structural support of bearing 2700 is provided.Support member 2708 can also be in the side wall of the first contact 2702 and the second contact 2704Extension so that the only top surface of the first contact 2702 and the basal surface of the second contact 2704 exposes.In order to strengthen support memberStructure couples between 2708 and overall structure, can be realized in the first contact 2702 and/or the second contact 2,704 one orMultiple hook structures, as shown in Figure 28 A.
Figure 28 A and 28B show the exemplary support with hook structure 2810 of some embodiments according to the disclosure2800.Similar to bearing 2700, bearing 2800 may include the first contact 2802 being linked together via connector 2806 andTwo contacts 2804.First connector 2802, the second contact 2804 and connector 2806 can form the entirety similar to bearing 2700Structure.In some embodiments, bearing 2800 includes the hook knot extended from the first contact 2802 and/or the second contact 2804Structure 2810.As shown in Figure 28 A, hook structure 2810 extends from the first contact 2802 and also forms an integrally-built part.Hook structure 2810 provides the additional surface area region contacted with the supporting construction 2808 shown in Figure 28 B, with enhancing and supporting construction2808 mechanical attachment.
As described herein, bearing 2434 can be configured as the every of drive plate 2426 and emitter coil arrangement 2429Individual emitter coil coupling.Therefore, bearing 2434 can be configured with different height with by drive plate 2426 from it is differentEmitter coil coupling in layer.
Figure 29 shows being attached to bearing 2902,2904 and 2906 according to some embodiments of the disclosureThe emitter coil arrangement 2900 of the exemplary assembling of bottom layer driving device plate (for example, drive plate 2426).Emitter coil clothPutting 2900 may include the emitter coil 2908 in first transmitter coil layer, the transmitting in second transmitter coil layerDevice coil 2910 and the emitter coil 2912 in the 3rd transmitter line ring layer.For the sake of clarity, figure 29 illustratesEvery layer of the only one emitter coil from emitter coil arrangement 2429.
Upon assembly, bearing 2902,2904 and 2906 can be nested in emitter coil arrangement 2900, shown in dotted line.The equivalent layer that each bearing 2902,2904 and 2906 can be configured with the emitter coil coupled with it is corresponding notWith height.For example, bearing 2902 can have the emitter coil being suitable in drive plate 2426 and first transmitter coil layerFirst height of 2908 couplings, support 2904 can have the hair being suitable in drive plate 2426 and second transmitter coil layerThe second height that emitter coil 2910 couples, and bearing 2906 can have and be suitable to the transmitter of drive plate 2426 and the 3rdThe third height that emitter coil 2912 in coil layer couples.Therefore, than two bearings 2902 and 2904 of bearing 2906 are allHeight, and bearing 2904 is high than bearing 2902, but it is shorter than bearing 2906.Once three layers of emitter coil assemble, adjacentEmitter coil can shelve against each other, but still coupled with drive plate 2426, so that emitter coil is arranged2900 z minimized heights.
Referring again to Figure 24, according to some embodiments of the disclosure, wireless charging electrical pad 2400 may also include pay off rack2436 and the bottom shield 2438 for pay off rack 2436.When being assembled in wireless charging electrical pad 2400, bottom shield2438 can be adhered pay off rack 2436.Pay off rack 2436 can be the structural support layers for the trunk for forming wireless charging electrical pad 2300.In some embodiments, its interior rigidity plastics layer for forming multiple openings 2440 of pay off rack 2322.Each opening 2440 can be formedFor with corresponding to (the multiple inversions such as operating one or more emitter coils of one or more electronic equipmentsDevice) size and position, this will be further described herein.
Figure 30 is looking up according to the pay off racks 2436 for being couple to drive plate 2426 of some embodiments of the disclosureFigure.The figure shows the pay off rack 2436 without bottom shield and drive plate 2426 so that relative to pay off rack 2436It can be seen that the placement of the electronic unit 3002 of multiple encapsulation.Therefore, when from top perspective, pay off rack 2436 is openedMouth 2440 can allow to see driving plate 2426 by each opening 2440.In some embodiments, be shown as various sizes andThe electronic unit 3002 of the encapsulation of multiple dark features of shape may be provided on the drive plate 2426 in opening 2440.ElectricitySubassembly 3002 can be any suitable electronic unit for operating wireless charging electrical pad 2400.For example, electronic unit 3002 canIt is power electronic devices, microcontroller, capacitor, resistor etc..In some embodiments, electronic unit 3002 include canMultiple inverters in the corresponding underside area of drive plate 2426, for being grasped in emitter coil arrangement 2429Make emitter coil.
In a particular embodiment, some openings in opening 2440 can provide space, and the inverter of encapsulation is arranged on thisTo operate the arrangement of emitter coil in space, the arrangement of the emitter coil 605 or 607 shown in such as Fig. 6 D and Fig. 6 E.ExampleSuch as, inverter opening 2442 can be used for providing the space where the inverter of encapsulation.Inverter opening 2442 shows with thick line,So that they are more readily spotted.In some embodiments, for encapsulation inverter inverter opening 2442 quantityCorresponding to the quantity of the emitter coil used in the arrangement of emitter coil.If for example, wireless charging electrical pad include byThe arrangement for the emitter coil that 22 coils are formed, then pay off rack 2436 may include 22 inverter openings 2442, wherein eachInverter opening and corresponding inverter are corresponding, for supporting corresponding emitter coil.In some embodiments, inversionDevice opening 2442 is configured such that the inverter of encapsulation can be positioned in immediately below the respective transmitter coil of its support.In other embodiments, one or more inverter openings 242 can not be oriented to allow the inverter of encapsulation to be arranged on its phaseImmediately below the emitter coil answered.However, these inverter openings still can allow the inverter of encapsulation very close to its phaseThe emitter coil answered, rather than it is remotely from the edge of the wireless charging electrical pad of its corresponding emitter coil.By permittingPerhaps the inverter encapsulated is close to their own emitter coil (if not in immediately below it), constant time lag and by long mark(as traditional charging pad is undergone, wherein inverter is placed on charging pad periphery simultaneously for loss caused by the high resistance of line lengthNeed to be routed to the emitter coil at charging pad center) it can be minimized.
According to some embodiments of the disclosure, bottom shield 2438 (not shown in Figure 30) can be layered in unwrapping wire frameOn the side relative with the side that drive plate 2426 couples of frame 2436.Therefore, bottom shield 2438 is by electronic unit 3002It is encapsulated in corresponding opening 2440 so that not only electronic unit is not influenceed by external electrical disturbances, and in opening 3002The part of the outside wireless charging electrical pad 2400 not noise jamming caused by electronic unit 3002.In some embodiments, bottomPortion's shielding part 2438 is formed by screen layer and multiple insulating barriers, as shown in figure 31.
Figure 31 is the top view according to the exemplary base shielding part 3100 of some embodiments of the disclosure.Bottom screenShield 3100 may include screen layer 3102 and be attached to multiple insulating barriers 3104 of screen layer 3102.In some embodiments,Insulating barrier 3104 corresponds to the one or more of pay off rack and is open, the opening 2440 in such as Figure 30.For example, insulating barrier 3104Can be configured as with it is more than one opening 2440/2442 corresponding band, as shown in figure 31.Constructed when in wireless charging electrical padWhen, insulating barrier 3104 could attach to pay off rack 2436 and be positioned at pay off rack 2436 (and one or more opening) andBetween screen layer 3102.Insulating barrier 3104 can prevent being electrically coupled for electronic unit 3002 and screen layer 3102.In some embodiment partyIn case, screen layer 3102 is flexible thin material.Therefore, the region of the screen layer 3102 directly over opening 2440 is deflectableContacted into opening 2440 and with one or more electronic units 3002.Therefore, insulating barrier 3104 can prevent screen layer 3102 withBeing electrically coupled between one or more electronic units 3002.
Screen layer 3102 can be by being suitable for being shielded to electronic unit 3002 and electron emission from electronic unit 3002Any material formed.For example, screen layer 3102 can be formed by copper.Insulating barrier 3104 can be by any electricity of such as polyimidesInsulating materials is formed.
In some embodiments, multiple posts may be provided in opening 2440 and be pressed into opening to mitigate screen layer 3102Stroke when 2440.For example, referring again to Figure 30, post 3004, which can be located on drive plate 2426, has open space to mitigateIn the region of the deflection of bottom shield 2438.In addition, post 3004 can also prevent electronic unit 3002 to be pressed into out by exterior objectDamage caused by mouth 2440.
VII. pcb and twisted coil wireless charging pad are mixed
According to some embodiments of the disclosure, wireless charging electrical pad can be configured as to more than one different equipmentElectric power is provided.For example, an equipment can be the larger equipment for having larger receiving coil, such as smart phone, flat board electricityBrain, notebook computer etc., and another equipment can be the relatively skinny device with smaller receiving coil, for example, it is intelligent watch, smallType portable music player etc..In such embodiment, wireless charging electrical pad may include more than one emitter coil clothPut, wherein each emitter coil arrangement is optimized for different electronic equipment chargings.Therefore, wireless charging electrical pad can be excellentSelection of land once charge more than one distinct device and/or when being charged to multiple distinct devices it is equally effective.
Figure 30 shows the example for including more than one emitter coil and arranging of some embodiments according to the disclosureThe exploded view of property wireless charging electrical pad 3200.Wireless charging electrical pad 3200 may include the first housing 3202 and the second housing 3204, eachHousing is configured like the first housing 2302 and the second housing 2304 in Figure 23.First housing 3202 and second shellBody 3204 can coordinate to form inner chamber, and internal part may be housed in inner chamber.In some embodiments, inner chamber canArranged including more than one emitter coil.For example, inner chamber may include two emitter coil arrangements：First transmitterCoil arrangement 3206 and second transmitter coil arrangement 3208.It should be appreciated that wireless charging electrical pad 3200 may also include similar to figureOther internal parts of wireless charging electrical pad 2320 in 23, but be for the sake of clarity not shown.
First transmitter coil arrangement 3206 can be optimized with to the first equipment 3212 including the first receiver coil 3214Charging, and can optimize second transmitter coil arrangement 3208 with to including with the size different from the first receiving coil andSecond equipment 3216 of the second receiver coil 3218 of shape and therefore different electrical characteristics charges.For example, the first equipment3212 can be the equipment bigger than the second equipment 3216, and the first receiver coil 3214 can be more than the second receiver coil3218.Although each emitter coil arrangement 3206 and 3208 can be optimized to different equipment charges, each hairEmitter coil arrangement still can not be optimized to the other equipment charging of charging to them, but in a manner of less efficient.ShouldWork as understanding, even if Figure 30 illustrate only two equipment, the embodiment being discussed herein can be configured as to more than two equipmentCharged, each equipment has the size and dimension being different from shown in Figure 30.Moreover, it will be appreciated that each emitter coilArrangement can charge on whole charging surface to electronic equipment.It is not that an emitter coil arrangement can only be to charging surfaceEquipment charge in subregion and another emitter coil can not only be to the equipment in another sub-regions of charging surfaceCharging.
In some embodiments, first transmitter coil arrangement 3206 and second transmitter coil arrangement 3208 can be byEmitter coil is formed, and wherein the size of emitter coil is optimized for different electronic equipments.For example, the first hairEmitter coil arrangement 3206 can be formed by the emitter coil of first size, and second transmitter coil arrangement 3208 is by secondThe emitter coil of size is formed.The chi for the receiver coil 3214 that first size may correspond in the first electronic equipment 3212It is very little, and the size for the receiver coil 3218 that the second size may correspond in the second electronic equipment 3216.Therefore, the first transmittingDevice coil arrangement 3206 can particularly effectively induce electric current in the receiver coil 3214 of the first equipment 3212, butInduced in the receiver coil 3218 of second equipment 3216 less efficient during electric current.On the contrary, second transmitter coil is arranged3208 can particularly effectively induce electric current in the receiver coil 3218 of the second equipment 3216, but in the first equipmentInduced in 3212 receiver coil 3214 less efficient during electric current.It should be appreciated that each emitter coil arrangement can be wholeElectronic equipment is charged on individual charging surface.
In a further embodiment, first transmitter coil arrangement 3206 and second transmitter coil arrangement 3208 canArranged with different patterns, wherein each pattern optimizes for different electronic equipments.For example, first transmitter coilArrangement 3206 can be arranged with single emitter coil, and second transmitter coil arrangement 3208 is according to the figure of foregoing discussion herein8th, emitter coil arrangement any one of 800,1000,1900 and 2200 in 10,19 and 22 is arranged.Therefore, the first hairEmitter coil arrangement 3206 particularly effectively can induce electric current in the receiver coil 3214 of the first equipment 3212, stillLess efficient when inducing electric current in the receiver coil 3218 of the second equipment 3216, vice versa.
As discussed herein, emitter coil arrangement can produce time-varying magnetic field.Therefore, first transmitter coil is arranged3206 and second transmitter coil arrangement 3208 can be operated with various frequencies to produce time-varying magnetic field.In some embodiments,First transmitter coil arrangement 3206 can be operated with first frequency, and second transmitter coil arrangement 3208 is grasped with second frequencyMake.When the first arrangement 3206 and second transmitter coil arrangement 3208 are arranged with different patterns, first frequency and the second frequencyRate may be the same or different.However, when first transmitter coil arrangement 3206 and second transmitter coil arrangement 3208 are with identicalPattern arrangement when, first frequency and second frequency are different.For example, the hair of first transmitter coil arrangement 3206 and secondEmitter coil arrangement 3208 all can according to the emitter coil arrangement 800 in Fig. 8,10,19 and 22 of foregoing discussion herein,Any one of 1000,1900 and 2200 or any other emitter coil arrangement arrange.In this case, the first hairEmitter coil arrangement 3206 can induce the particularly effective frequency of electric current in the receiver coil 3214 of the first equipment 3212Lower operation, but it is less efficient when inducing electric current in the receiver coil 3218 of the second equipment 3216.On the contrary, the second hairEmitter coil arrangement 3208 can induce the particularly effective frequency of electric current in the receiver coil 3218 of the second equipment 3216It is less efficient when working, but electric current is induced in the receiver coil 3214 of the first equipment 3212.The difference of operating frequencyIt may depend on the special operating frequency of each receiver coil.In some embodiments, the difference can be between the order of magnitudeIn the range of.For example, first frequency one to two magnitudes high than second frequency.In specific embodiments, the first equipment3212 be intelligent watch, and the second equipment 3216 is smart mobile phone.
In addition, in some embodiments, first transmitter coil arrangement 3206 and second transmitter coil arrangement 3208It can be formed by identical or different emitter coil.That is, first transmitter coil arrangement 3206 can be by with or without bobbinThe emitter coil of twisted coil formed, such as the emitter coil 1600,1800 and 2100 in Figure 16,18 and 21, andTwo emitter coils arrangement 3208 can be formed in PCB.The structure of every kind of form can be customized to have in corresponding equipmentEffect ground induction power.For example, the twisted loop construction of second transmitter coil arrangement 3208 particularly effectively can be set secondElectric current is induced in standby 3216 receiver coil 3218, but is sensed in the receiver coil 3214 of the first equipment 3212Go out less efficient during electric current.
Although describing the present invention relative to specific embodiment, it is to be understood that, weighed it is contemplated that covering is followingAll modifications form and equivalents in sharp claimed range.