In submission on December 6th, 2018 China State Intellectual Property Office, application No. is 201811487725.2, denominations of inventionFor the Chinese patent application of " a kind of double glass photovoltaic modulies ",
In submission on December 6th, 2018 China State Intellectual Property Office, application No. is 201822042108.3, denominations of inventionFor the Chinese patent application of " a kind of double glass photovoltaic modulies ",
Entire contents are hereby incorporated by reference in the application.
Summary of the invention
Based on the above, the embodiment of the invention provides one kind to be not only able to satisfy load-carrying ability requirement, but also does not influence the back sideDouble glass photovoltaic modulies of generated energy.
Specific technical solution is as follows:
The embodiment of the invention provides a kind of double glass photovoltaic modulies, including laminate, terminal box and it is provided only on describedThe first frame and the second frame of laminate two sides long side；
The laminate includes cover-plate glass, the first packaging adhesive film, battery strings, the second packaging adhesive film, back-panel glass and remittanceFlow item；
Through-hole is provided in the back-panel glass；
One end of the busbar is connect with the battery strings, and the other end of the busbar passes through the through-hole and bendingIt is connect after forming bending edges with the terminal box；
The bending edges of the busbar not EDGE CONTACT with the through-hole.
In a kind of optional embodiment, first frame and second frame are in the longitudinal direction of the laminateHeart line is that symmetry axis is axisymmetricly distributed.
In another optional embodiment, the distance between the edge of the bending edges of the busbar and the through-holeIt is 0.1 millimeter or more.
In another optional embodiment, the distance between the edge of the bending edges of the busbar and the through-holeIt is 1 millimeter or more.
In another optional embodiment, the both ends of the both ends of first frame and second frame with it is describedThere are distances between the two sides short side of laminate.
In another optional embodiment, first frame is using the cross central line of the laminate as symmetry axisAxisymmetricly it is distributed, and/or, second frame is axisymmetricly distributed using the cross central line of the laminate as symmetry axis,
In another optional embodiment, the equal length of the length of first frame and second frame.
In another optional embodiment, the length of first frame and second frame accounts for the laminateLong side length 50% or more.
In another optional embodiment, the battery strings include multiple solar battery sheets, the solar-electricityPond piece is single side solar battery sheet or double-sided solar battery piece.
In another optional embodiment, the battery strings include multiple solar battery sheets, the solar-electricityPond piece is full wafer solar battery sheet or slice solar battery sheet.
The embodiment of the invention also provides another double glass photovoltaic modulies, including laminate and it is separately positioned on the laminationThe first frame and the second frame in the long side of part two sides.
First frame and second frame using the longitudinal centre line of the laminate as symmetry axis axisymmetriclyDistribution.
In a kind of optional embodiment, the upper end of first frame, the upper end of second frame and the layerThe upside short side of casting die is concordant.
In another optional embodiment, the both ends of first frame, second frame both ends with it is describedThere are distances between the two sides short side of laminate.
In another optional embodiment, first frame is using the cross central line of the laminate as symmetry axisIt is axisymmetricly distributed, second frame is axisymmetricly distributed using the cross central line of the laminate as symmetry axis.
In another optional embodiment, first frame, the second frame length account for the laminate length50% or more.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
The embodiment of the invention provides a kind of double glass photovoltaic modulies of bilateral frame, and side only is arranged in the two sides long side of laminateComponent is mounted on longitudinal carrier, also, this pair by frame when installing double glass photovoltaic modulies by the frame in the long side of two sidesThe bending edges of the busbar not EDGE CONTACT with back-panel glass through-hole in glass photovoltaic module, in this way, double glass photovoltaic modulies are being carried on the backFace is not provided with also can satisfy load-carrying ability requirement in the case where horizontal support, and since lower side does not have frame, will not hideThe illumination on gear ground is mapped to module backside, to will not influence the back side generated energy of double glass photovoltaic modulies.Also, due to the present inventionThe lower side for double glass photovoltaic modulies that embodiment provides does not have frame, therefore is not easy dust stratification, accumulated snow, reduces because of dust stratification, accumulated snowGenerate the risk of hot spot.In addition, double glass photovoltaic modulies can also be mitigated using " bilateral frame " provided in an embodiment of the present invention designWeight, reduce the cost of double glass photovoltaic modulies.
Specific embodiment
The embodiment of the invention provides a kind of double glass photovoltaic modulies of bilateral frame, and Fig. 5 shows provided in an embodiment of the present inventionThe structure of double glass photovoltaic modulies, as shown in figure 5, double glass photovoltaic modulies include: laminate 1, terminal box and are provided only on layerThe first frame 21 and the second frame 22 of 1 two sides long side of casting die.In the embodiment of the present invention, the two sides short side of laminate 1 is not provided withFrame.
Wherein, laminate 1 include cover-plate glass, the first packaging adhesive film, battery strings, the second packaging adhesive film, back-panel glass andBusbar；Through-hole 13 is provided in back-panel glass.
Cover-plate glass, the first packaging adhesive film, battery strings, the second packaging adhesive film and back-panel glass are cascading, confluenceOne end of item 12 is connect with battery strings, the other end of busbar 12 passes through through-hole 13 and bending formed after bending edges 121 with wiringBox 3 connects.
As shown in fig. 6, the bending edges 121 of the busbar 12 not EDGE CONTACT with through-hole 13.
As shown in fig. 7, double glass photovoltaic modulies provided in an embodiment of the present invention are during installation, pass through the first frame 21 and secondDouble glass photovoltaic modulies are mounted on longitudinal carrier by frame 22, so that double glass photovoltaic modulies is inclined to set, the side of laminate 1 is shortSide is upwards (far from ground), and the other side short side of laminate 1 is downwards (close to ground).Double glass photovoltaic modulies back side is not provided with transverse directionBracket.
In the embodiment of the present invention, laminate 1 is rectangle substantially, for ease of description, after the installation of double glass photovoltaic modulies,The upward side short side of laminate 1 is known as upper side edge, and downward side short side is known as lower side；By the first frame 21, the second sideThe upward one end of frame 22 is known as upper end, and downward one end is known as lower end, also, in the embodiment of the present invention, " longitudinal direction " refers to and layerThe parallel direction of 1 long side of casting die, " transverse direction " refer to the direction parallel with 1 short side of laminate.
In double glass photovoltaic modulies provided in an embodiment of the present invention, since lower side is not provided with frame, it will not blockThe illumination on ground is mapped to module backside, to will not influence the back side generated energy of double glass photovoltaic modulies.
Meanwhile in double glass photovoltaic modulies provided in an embodiment of the present invention, the bending edges 121 of busbar 12 not with back-panel glassThe edge 131 of through-hole contacts, i.e., the distance between the bending edges 121 of busbar 12 and the edge 131 of back-panel glass through-hole are greater thanZero.
As shown in fig. 6, the bending edges 121 of busbar 12 refer to the position of 12 bending of busbar in the embodiment of the present invention,In laminate 1, a part of busbar 12 is located on the inside of back-panel glass, and another part is located at the outside of back-panel glass, bending edgesIt is then to connect this two-part position.
In current existing double glass photovoltaic modulies, the bending edges 121 of busbar 12 are with the edge 131 of back-panel glass through-holeIt directly contacts, is easy for the intensity for making solar double-glass assemblies destroy back-panel glass through-hole when being acted on by load in this way, causes to carry on the backGlass sheet explosion.
And in the embodiment of the present invention, the bending edges 121 of busbar 12 are not contacted with the through-hole edge 131 of back-panel glass, fromAnd make double glass photovoltaic modulies provided in an embodiment of the present invention that frame is set in only two sides long side, and the back side does not have horizontal supportIn the case where still be able to by three recycle 5400Pa/2400Pa load test, meet IEC standard requirement.
Further, since the lower side of double glass photovoltaic modulies provided in an embodiment of the present invention is not provided with frame, therefore it is not easyDust stratification, accumulated snow are reduced because dust stratification, accumulated snow generate the risk of hot spot.The design of " bilateral frame " can also mitigate double glass photovoltaic groupsThe weight of part reduces the cost of double glass photovoltaic modulies.
In the embodiment of the present invention, the distance between bending edges 121 and the edge 131 of through-hole of busbar 12 can be 0.1Millimeter or more, such as 0.2 millimeter, 0.3 millimeter, 0.4 millimeter, 0.5 millimeter etc., it further can be 1 millimeter or more, such as1.5 millimeters, 2 millimeters, 2.5 millimeters, 3 millimeters, 3.5 millimeters, 4 millimeters, 4.5 millimeters, 5 millimeters etc..It should be noted that such as Fig. 6It is shown, in double glass photovoltaic modulies, it will usually which there are two busbars 12 to pass through simultaneously bending from through-hole 13, this allows for converging in designThe bending edges 121 of two busbars 12 are noted that when flowing the distance between the edge 131 of the bending edges 121 and through-hole of item 12The distance between be greater than zero, i.e., not contacted between the bending edges 121 of two busbars 12.
It should also be noted that, the through-hole 13 of back-panel glass is generally circular in shape, the edge of through-hole in double glass photovoltaic modulies131 are arc-shaped, and the bending edges 121 of busbar 12 are usually linear, then the side of the bending edges 121 of busbar 12 and through-holeThe distance between edge 131 be not it is equal everywhere, in this case, in the embodiment of the present invention, the bending edges 121 of busbar 12The distance between edge 131 of through-hole refer to minimum range between the two (as indicated by appended drawing reference d in Fig. 6 away fromFrom).
In the embodiment of the present invention, the first frame 21 and the second frame 22 can be symmetrical with the longitudinal centre line of laminate 1Axis is axisymmetricly distributed, i.e. the top and bottom of the first frame 21 and the second frame 22 difference is concordant.
Certainly, the first frame 21 and the second frame 22 can not also be in axis pair by symmetry axis of the longitudinal centre line of laminate 1Claim distribution.
In the embodiment of the present invention, the both ends of the both ends of the first frame 21 and the second frame 22 and the two sides short side of laminate 1Between there are distances.
First frame 21 can also only between upper end (or lower end) and the upper side edge (or lower side) of laminate 1 there are away fromFrom.Second frame 22 can also only there are distances between upper end (or lower end) and the upper side edge (or lower side) of laminate 1.
In the embodiment of the present invention, the first frame 21 can axisymmetricly divide using the cross central line of laminate 1 as symmetry axisCloth, the second frame 22 can also be axisymmetricly distributed using the cross central line of laminate 1 as symmetry axis.
The length of first frame 21 and the length of the second frame 22 can be equal, can also be unequal.
In the embodiment of the present invention, the length of the first frame 21 and the second frame 22 accounts for the ratio of the long side length of laminate 1It can be 50% or more, such as 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% etc..For different version type components, the length of the first frame 21 and the second frame 22 can be adaptively adjusted.For example, for 60The ratio for the long side length that the length of piece version type component, the first frame 21 and the second frame 22 accounts for laminate 1 be can be 50%(such as 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% etc.) above；For 72Version type component, the ratio for the long side length that the length of the first frame 21 and the second frame 22 accounts for laminate 1 be can be 60% withUpper (such as 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% etc.).
In the embodiment of the present invention, the first frame 21, the second frame 22 the structure embodiment of the present invention there is no particular/special requirement, thisThe border structure of field routine.In a kind of optional embodiment, border structure as shown in Figure 9 can be used.ToolFor body, frame includes the first mounting plate a1 arranged in parallel, the second mounting plate a2 and third mounting plate a3, and connectionThe connecting plate a4 of first mounting plate a1, the second mounting plate a2, third mounting plate a3, wherein connecting plate a4 and the first mounting plate a1,Second mounting plate a2, third mounting plate a3 are vertical.1 edge of laminate setting the first mounting plate a1 and the second mounting plate a2 itBetween, laminate 1 and the first mounting plate a1 and the second mounting plate a2 can be fixed by sealants such as silica gel.
The double glass photovoltaic modulies of bilateral frame provided in an embodiment of the present invention during installation, using the peace of existing double glass photovoltaic moduliesDress mode is installed.For example, can be as shown in fig. 7, passing through intermediate holder 4 and longitudinal direction between two neighboring double glass photovoltaic moduliesBracket 3 ' is fixed, and the outer side edges of double glass photovoltaic modulies on the outermost side are fixed by edge clamps 5 and longitudinal carrier 3 '.ItsIn, the frame of double glass photovoltaic modulies is pressed on longitudinal carrier 3 ' by intermediate holder 4 (edge clamps 5), and 4 (side of intermediate holderEdge fixture 5) and longitudinal carrier 3 ' on be also correspondingly arranged on mounting hole, bolt passes through mounting hole for intermediate holder 4 (edge clamps 5)It is fixed with longitudinal carrier 3 ', so that double glass photovoltaic modulies and longitudinal carrier 3 ' are fixed.
Alternatively, bolt passes through third mounting plate a3 as shown in figure 9, mounting hole X is arranged on the third mounting plate a3 of frameOn mounting hole X and longitudinal carrier 3 ' on mounting hole, it is directly that double glass photovoltaic modulies and longitudinal carrier 3 ' is fixed.
Multi-string battery string is generally included in double glass photovoltaic modulies, every string battery strings include multiple solar battery sheets 11, moreA solar battery sheet 11 is connected by mutual latticing, and busbar 12 then collects the electric current of battery strings by connecting with mutual latticing.
Solar battery sheet 11 can be single side solar battery sheet or double-sided solar battery piece, that is to say, that this hairDouble glass photovoltaic module structures that bright embodiment provides are applicable not only to two-sided double glass photovoltaic modulies, glass photovoltaic modulies double for single sideIt is equally applicable.
Solar battery sheet 11 can may be slice solar battery sheet for full wafer solar battery sheet.The full wafer sunEnergy cell piece refers to square or square corner cut cell piece, and slice solar battery sheet is to full wafer solar batteryPiece is cut to obtain, and shape can be rectangle, and cutting ratio can be half, one third, a quarter, five pointsFirst-class.60,72 refer to full wafer solar battery in the 60 version type components and 72 version type components being mentioned aboveThe quantity of piece.
In the embodiment of the present invention, the position of terminal box 3 can be determined according to component version type.
For the component of some editions types, terminal box 3 is arranged close to the side short side of laminate 1, such as the full wafer sunIt can cell piece photovoltaic module.It should be noted that the double glass photovoltaic modulies of the type are during installation, the side close to terminal box 3 is shortSide is upward, far from ground.
For the component of some editions types, the middle position of 1 length direction of laminate, such as half is arranged in terminal box 3Piece (half slice) solar battery sheet photovoltaic module.
It is understood that the position of the through-hole 13 in back-panel glass is corresponding with the position of terminal box 3.
In double glass photovoltaic modulies provided in an embodiment of the present invention, it can also pass through " imbrication " mode between solar battery sheet 11Arrangement, the i.e. imbricate with adjacent solar battery piece in a string of battery strings.For the double glass arranged using " imbrication " modeFor photovoltaic module, 1 back side of laminate and the side long side close to laminate 1 is arranged in terminal box.
The embodiment of the invention also provides another double glass photovoltaic modulies, including laminate 1 and it is separately positioned on laminate 1The first frame 21 and the second frame 22 in the long side of two sides.
Optionally, the first frame 21 and the second frame 22 axisymmetricly divide using the longitudinal centre line of laminate 1 as symmetry axisCloth.
Optionally, the upper end of the first frame 21, the upper end of the second frame 22 are concordant with the upside short side of laminate 1.
Optionally, between the both ends of the first frame 21, the both ends of the second frame 22 and the two sides short side of laminate 1 there areDistance.
Optionally, the first frame 21 is axisymmetricly distributed using the cross central line of laminate 1 as symmetry axis, the second frame 22It is axisymmetricly distributed using the cross central line of laminate 1 as symmetry axis.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodimentLimitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,It should be equivalent substitute mode, be included in protection scope of the present invention.