Coil device with wireless charging functionTechnical field
The utility model relates to wireless charging technical fields, and in particular, to a kind of coil with wireless charging functionDevice.
Background technique
Common low power wireless charger carries out energy coupling by coil and realizes energy frequently with electromagnetic induction principleThe transmitting of amount, the characteristics of connection without traditional charging power cord, thus increasingly by mobile phone, tablet computer, smartwatchEqual producers' favor.Coil in wireless charger all uses FPCB to realize, conducting wire is turned to coiled type, the surface light of conducting wireIt is sliding.Existing wireless charging FPC coil is etched using single layer, causes space utilization rate not high, is not achieved in terms of performance structure and is wantedIt asks；The coiler part of its energy transmission can generate a large amount of losses due to having the loss of resistance and skin effect principle, reduceEfficiency of transmission increases calorific value, and how to improve coil performance is a critically important technical problem of wireless charging.
Therefore, it is necessary to design the coil with wireless charging function that a kind of space utilization rate is high, performance is met the requirementsDevice.
Utility model content
In view of the drawbacks of the prior art, the purpose of the utility model is to provide a kind of, and the coil with wireless charging function fillsIt sets, the coil device space utilization rate with wireless charging function of the utility model is high, performance is met the requirements.
The utility model relates to a kind of coil devices with wireless charging function, including magnetic material, first layer FPC lineCircle, insulating layer and second layer FPC coil,
The first layer FPC coil and the second layer FPC coil are successively set on the magnetic material, the insulationLayer between the second layer FPC coil and the first layer FPC coil,
The first layer FPC coil and the second layer FPC coil are that bifilar winding coiling is formed, the first layerIt is connected in parallel between FPC coil and the second layer FPC coil.
Further, the first layer FPC coil is equipped with the first excessively electric hole, and the second layer FPC coil is equipped with theTwo excessively electric holes, the described first excessively electric hole and the described second excessively electric hole carry out electroplating processes, the excessively electric hole of described first after platingAnd described second excessively electric hole for realizing being connected in parallel between the first layer FPC coil and the second layer FPC coil.
Further, the first layer FPC coil and the second layer FPC coil are circular coil, the first layerFPC coil and the second layer FPC coil are arranged concentrically.
Further, described device further includes bridge-type wire jumper and feed end, and the bridge-type wire jumper is arranged in the first layerThe end of the bridge-type wire jumper and remote is arranged in the same opening of FPC coil and the second layer FPC coil, the feed endFrom the first layer FPC coil and the second layer FPC coil.
Further, the magnetic material is made of nano-crystalline magnetic material.
Further, the circle number of the first layer FPC coil is 8-13 circle, and the circle number of the second layer FPC coil is 8-13 circles.
Compared with prior art, the utility model have it is following the utility model has the advantages that
(1) coil device with wireless charging function of the utility model, it is excessively electric that first layer FPC coil is equipped with firstHole, second layer FPC coil are equipped with the second excessively electric hole, and the first excessively electric hole and the second excessively electric hole carry out electroplating processes, after platingThe first excessively electric hole and the second excessively electric hole for realizing being connected in parallel between first layer FPC coil and second layer FPC coil, subtractThe resistance of small way circuit improves charge efficiency, and space utilization rate is high, and performance is met the requirements；
(2) coil device with wireless charging function of the utility model, bridge-type wire jumper are arranged in first layer FPC coilWith the same opening of second layer FPC coil, feed end is arranged in the end of bridge-type wire jumper and far from first layer FPC coil and theTwo layers of FPC coil, bridge-type wire jumper and feed end can complete current loop, and it is good that wireless charging electric wire coil apparatus converts electric energy efficiencyGood, user experience is good；
(3) coil device with wireless charging function of the utility model, first layer FPC coil and second layer FPC lineCircle is that bifilar winding coiling is formed, and facilitates the whole assembly of Wireless charging coil；
(4) coil device with wireless charging function of the utility model, compact, reliable operation can be placed inOn small device, equipment does not need traditional wired energization, convenient and efficient, and appearance is perfect.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility modelSign, objects and advantages will become more apparent upon.
Fig. 1 is the structural schematic diagram for the coil device that the utility model has wireless charging function；
Fig. 2 is the structural schematic diagram of the utility model first layer FPC coil；
Fig. 3 is the structural schematic diagram of the utility model second layer FPC coil；
Fig. 4 is the partial enlarged view that part is irised out in Fig. 2；
Fig. 5 is the partial enlarged view that part is irised out in Fig. 3.
Wherein, corresponding appended drawing reference in figure are as follows: 1- magnetic material, 2- first layer FPC coil, the excessively electric hole 21- first, 3-Insulating layer, 4- second layer FPC coil, the excessively electric hole 41- second, 5- bridge-type wire jumper, 6- feed end.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this fieldTechnical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that abilityFor the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.These are all within the protection scope of the present invention.
Embodiment
In the present embodiment, a kind of coil device with wireless charging function of the utility model, including magnetic material 1,One layer of FPC coil 2, insulating layer 3 and second layer FPC coil 4,
The first layer FPC coil 2 and the second layer FPC coil 4 are successively set on the magnetic material 1, describedInsulating layer 3 between the second layer FPC coil 4 and the first layer FPC coil 2,
The first layer FPC coil 2 and the second layer FPC coil 4 are that bifilar winding coiling is formed, the first layerIt is connected in parallel between FPC coil 2 and the second layer FPC coil 4.
Next the utility model is described in detail.
The purpose of the utility model is to provide a kind of coil device with wireless charging function, the utility model hasThe coil device space utilization rate of wireless charging function is high, performance is met the requirements.
A kind of coil device with wireless charging function of the utility model, including magnetic material 1, first layer FPC lineCircle 2, insulating layer 3 and second layer FPC coil 4,
The first layer FPC coil 2 and the second layer FPC coil 4 are successively set on the magnetic material 1, describedInsulating layer 3 between the second layer FPC coil 4 and the first layer FPC coil 2,
The first layer FPC coil 2 and the second layer FPC coil 4 are that bifilar winding coiling is formed, the first layerIt is connected in parallel between FPC coil 2 and the second layer FPC coil 4.
The first layer FPC coil 2 is equipped with the first excessively electric hole 21, and it is excessively electric that the second layer FPC coil 4 is equipped with secondHole 41, the described first excessively electric hole 21 and the described second excessively electric hole 41 carry out electroplating processes, the excessively electric hole of described first after plating21 and described second excessively electric hole 41 for realizing the parallel connection between the first layer FPC coil 2 and the second layer FPC coil 4Connection.
The first layer FPC coil 2 and the second layer FPC coil 4 are circular coil, the first layer FPC coil 2It is arranged concentrically with the second layer FPC coil 4.
Described device further includes bridge-type wire jumper 5 and feed end 6, and the bridge-type wire jumper 5 is arranged in the first layer FPC coil2 and the second layer FPC coil 4 same opening, the end of the bridge-type wire jumper 5 and separate is arranged in the feed end 6The first layer FPC coil 2 and the second layer FPC coil 4.
The magnetic material 1 is made of nano-crystalline magnetic material.
The circle number of the first layer FPC coil 2 is 8-13 circle, and the circle number of the second layer FPC coil 4 is 8-13 circle.
In conclusion the coil device with wireless charging function of the utility model, first layer FPC coil is equipped with theOne excessively electric hole, second layer FPC coil are equipped with the second excessively electric hole, and the first excessively electric hole and the second excessively electric hole carry out electroplating processes,The first excessively electric hole and the second excessively electric hole after plating is for realizing the parallel connection between first layer FPC coil and second layer FPC coilConnection reduces the resistance of way circuit, improves charge efficiency, and space utilization rate is high, and performance is met the requirements；The setting of bridge-type wire jumper is theThe same opening of one layer of FPC coil and second layer FPC coil, feed end are arranged in the end of bridge-type wire jumper and far from first layersFPC coil and second layer FPC coil, bridge-type wire jumper and feed end can complete current loop, the conversion of wireless charging electric wire coil apparatusElectric energy efficiency is good, and user experience is good；First layer FPC coil and second layer FPC coil are that bifilar winding coiling is formed, convenientThe whole assembly of Wireless charging coil；Compact, reliable operation can be placed on small device, and equipment does not need traditionalWired energization, convenient and efficient, appearance is perfect.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not officeIt is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims,This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodimentSign can be arbitrarily combined with each other.