CN205282490U - Back -contact solar cell module - Google Patents
Back -contact solar cell module Download PDFInfo
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- CN205282490U CN205282490U CN201521087253.3U CN201521087253U CN205282490U CN 205282490 U CN205282490 U CN 205282490U CN 201521087253 U CN201521087253 U CN 201521087253U CN 205282490 U CN205282490 U CN 205282490U
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- solar cell
- contact solar
- back contact
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- cell piece
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model discloses a back -contact solar cell module, including insulating location layer (4), be located layer (4) top was fixed a position in this insulation first adhesive layer (2) and apron layer (1) in proper order, be located layer (4) below was fixed a position in this insulation second adhesive layer (5) and backsheet layer (6) in proper order, and be fixed in battery piece bed set (3) on the insulation location layer (4), its characterized in that, this insulation is fixed a position layer (4) and is included that parallel configuration's fixed back of the body the that be used for contacts solar cell and pierce through net layer (41) that this insulation was fixed a position net mouth (43) on layer (4), was separated these net mouth (43), insulating location layer (4) still includes the battery piece retainer plate (42) that is used for fixed back of the body contact solar cell in net mouth (43). Adopt the utility model discloses the back -contact solar cell module on insulating location layer is with low costs and the reliability is high.
Description
Technical field
This utility model relates to area of solar cell, in particular it relates to a kind of back contact solar cell assembly.
Background technology
Conventional crystalline silicon solar cell is typically all H type structure, battery tow sides have two to three symmetrical silver-colored main gate line to collect electric current, by welding manner, the both positive and negative polarity grid line welding of adjacent two panels cell piece positive and negative is welded, realize the series connection of cell piece, then adopt the mode of glass+EVA+ cell piece+EVA+ backboard or glass to be packaged into assembly. In process of production, owing to needs use welding welding, welding temperature is generally 300-380 degree to this conventional crystalline silicon solar cell, and thermal stress is easy to cause cell piece bending and broken. During series welding, need to being welded on by welding on the front and back electrode of adjacent cell sheet, welding difficulty be big, complex process simultaneously. Further, since cell piece front gate line and welding block the incident ray of about 8%, cell piece efficiency there is also certain loss.
Being different from conventional crystalline silicon solar cell, back contact solar cell enjoys photovoltaic market to pay close attention to the device architecture of its uniqueness, simple preparation technology, higher battery efficiency and the advantage such as attractive in appearance. This novel solar battery front does not have main gate line, and both positive and negative polarity is all in cell backside. Owing to battery front side does not have main gate line and welding to stop light, the complete light in cell piece front, improve cell photoelectric conversion efficiency. It addition, positive and negative electrode is distributed in the back side of cell piece, simplify welding procedure.
The encapsulation technology of this new and effective back contact solar cell includes the following two kinds:
The first is to use welding, the conducting resinl law temperature joining to realize between cell piece, then according to the packaged type of conventional crystalline silicon assembly adopts glass+EVA+ cell piece+EVA+ conventional backing plate/glass to be packaged. Adopt cost in this way low, it is to avoid because of the cell piece bending adopting high-temperature soldering to cause, broken and electric pole short circuit.
The second is to use conductive backings and the conducting resinl law temperature joining to realize between cell piece, adopts glass+EVA+ cell piece+EVA+ conductive backings to be packaged. The connected mode of this advanced person eliminates the welding procedure of welding, without because cell piece is caused damage by thermal stress.
The first method for packing is owing to welding is short, solder joint is few, solder joint is little, and cell piece is not easy location, welding operation difficulty. It addition, be only together in series with three very short weldings between cell piece, pad is little again, and this results in is laying the problem that battery strings process very easily occurs that solder joint disconnects and cell piece damages.
The second method for packing, owing to the conductive backings technology on photovoltaic module is not yet ripe, reliability is not high, and the manufacture method such as photoetching circuit and chemical attack is complicated, cost intensive. And the EVA that conductive backings face is laid needs positional punch, and must first by cell piece together with conductive backings EVA pre-bonded with locating batteries sheet, then turnover panel carries out laminated compenent, and these techniques are loaded down with trivial details, power consumption, and in the process of turnover panel, easily damage cell piece.
Therefore, developing low-cost, the back contact battery component package technology of high reliability and product are the keys realizing back contact battery assembly industrialization.
Utility model content
The purpose of this utility model is to provide a kind of back contact solar cell assembly, and this back contact solar cell assembly cost is low and reliability is high.
To achieve these goals, this utility model provides a kind of back contact solar cell assembly, including insulation alignment layers, it is sequentially located at the first adhesive layer above this insulation alignment layers and cover layer, it is sequentially located at the second adhesive layer below this insulation alignment layers and backsheet layer, and it is fixed on the battery lamella group on described insulation alignment layers, wherein, this insulation alignment layers include laid out in parallel for fixing back contact solar cell and penetrating the grid mouth of this insulation alignment layers, separate the clathrum of this grid mouth, described insulation alignment layers also includes on the upper surface of described clathrum 41 for fixing the cell piece ring for fixing of back contact solar cell sheet.
Preferably, the region that described cell piece ring for fixing 42 is positioned on the upper surface of clathrum 41 with the imbricate of the shady face of cell piece. The region that cell piece ring for fixing 42 is arranged on the upper surface of clathrum 41 with the imbricate of the shady face of cell piece, it is possible to prevent the short circuit problem between cell piece further.
Preferably, the described cell piece ring for fixing region by being coated with, print or spraying being close on the upper surface of described clathrum 41 with the imbricate of the shady face of cell piece.
Preferably, described cell piece ring for fixing is layer of silica gel, and cell piece better completes location by the bonding of layer of silica gel.
Preferably, described clathrum includes a plurality of orthogonal first reflective muscle and the second reflective muscle.
Preferably, the cross section of described first reflective muscle and the second reflective muscle is that drift angle is at upper triangle.
Preferably, the base angle angle of described triangle is 15-85 ��, and the drift angle of described triangle is the circular arc chamfering of 30-150 ��.
Preferably, described battery lamella group includes multiple solar battery sheet.
Preferably, in parallel and/or series connection mode is adopted to be electrically connected between the plurality of solar battery sheet.
Preferably, by conducting electricity welding serial or parallel connection between described two adjacent cell pieces.
The back contact solar cell assembly that this utility model provides compared with prior art has the advantage that
Solar module adds one layer of insulation alignment layers; the dorsal edge of cell piece, surface or whole side are fixed on clathrum by cell piece ring for fixing; cell piece can be made accurately to position securely; be conducive to follow-up welding operation; and cell piece can be protected in the laying of multiple cell pieces well, it is prevented that because the displacement of cell piece causes welding dislocation to cause short circuit.
Cell piece ring for fixing can cover position, cell piece marginal portion, has isolated welding and the contact at cell piece edge, it is possible to avoid the short circuit of circuit for generating.
Clathrum covers the gap of cell piece, make to incide the light in cell piece gap from cover plate, can reflect at clathrum, light after reflection continues to reflex to utilization on cell piece behind the back side of cover layer, thus further increase the utilization rate of photon, improve the output of photovoltaic module, and the existence of clathrum makes surfaces of cell become attractive in appearance owing to can't see welding.
Other feature and advantage of the present utility model will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below. In the accompanying drawings:
Fig. 1 is the side partial structurtes schematic diagram of this utility model a kind of detailed description of the invention of back contact solar cell assembly;
Fig. 2 is the top view of this utility model insulation a kind of detailed description of the invention of alignment layers.
Description of reference numerals
1 cover layer 2 first adhesive layer 3 battery lamella group
4 insulation alignment layers 41 clathrum 42 cell piece ring for fixings
43 grid mouth 5 second adhesive layer 6 backsheet layers
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail. It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model.
As depicted in figs. 1 and 2, this utility model provides a kind of back contact solar cell assembly, including insulation alignment layers 4, it is sequentially located at the first adhesive layer 2 above this insulation alignment layers 4 and cover layer 1, it is sequentially located at the second adhesive layer 5 below this insulation alignment layers 4 and backsheet layer 6, and it is fixed on the battery lamella group 3 on described insulation alignment layers 4, it is characterized in that, this insulation alignment layers 4 include laid out in parallel for fixing back contact solar cell and penetrating the grid mouth 43 of this insulation alignment layers 4, separate the clathrum 41 of this grid mouth 43, described insulation alignment layers 4 also includes on the upper surface of described clathrum 41 for fixing the cell piece ring for fixing 42 of back contact solar cell sheet.
The material of cover layer 1 can be photovoltaic glass, plated film anti reflection glass or matte anti-reflective glass, to improve the absorptance of battery component, reduces luminous reflectance; The material of adhesive layer can be EVA (ethylene-vinyl acetate copolymer), PVB (polyvinyl butyral resin), transparent silicon glue-line or polyolefin layer, has the features such as good light transmission, cold-resistant, heat-resisting and long service life; In battery lamella group 3, cell piece is full back contact battery sheet, and namely positive and negative electrode is all at the shady face of cell piece; The material of backsheet layer 6 can be unorganic glass, lucite or other conventional material.
As in figure 2 it is shown, in order to solar battery sheet is fixed, it is preferable that described cell piece ring for fixing 42 is positioned at the region on the upper surface of clathrum 41 with the imbricate of the shady face of cell piece. Simultaneously, the existence of cell piece ring for fixing can make welding not contact with the bottom margin of cell piece, thus preventing short circuit, and the region that cell piece ring for fixing 42 is arranged on the upper surface of clathrum 41 with the imbricate of the shady face of cell piece, it is possible to prevent the short circuit problem between cell piece further.
As shown in Figure 2, needs according to preparation, described cell piece ring for fixing 42 can pass through to be coated with, print or spray the region being close on the upper surface of described clathrum 41 with the imbricate of the shady face of cell piece, for instance cell piece ring for fixing 42 can be layer of silica gel. The region that described cell piece ring for fixing 42 is arranged on the upper surface of described clathrum 41 with the imbricate of the shady face of cell piece, the edge of the shady face of cell piece can and clathrum between form the fixing of cell piece by layer of silica gel bonding, complete the locating effect of cell piece better.
The material of clathrum 41 is not particularly limited, as long as insulating, it is possible to be chosen from least one polymer material layer in fluorocarbon resin layer, PDAIP layer, polyvinylidene fluoride layer, polyethylene layer, polytetrafluoroethylene floor, fluorocarbon resin modified poly nitride layer, PDAIP modified poly nitride layer, polyvinylidene fluoride modified polymeric layer, PE modified polymeric layer and polytetrafluoroethylmodified modified polymeric layer.
It addition, for the incident light quantity increasing solaode, clathrum 41 preferably has the function of reflection incident ray, for instance, clathrum 41 is transparent material, can include reflectorized material granule in it, makes the light of incidence can reflex on solaode.
As shown in Figure 1, a kind of detailed description of the invention is: described clathrum 41 can include a plurality of orthogonal first reflective muscle and the second reflective muscle, the cross section of described first reflective muscle and the second reflective muscle can be that drift angle is at upper triangle, the base angle angle of triangle can be 15-85 ��, it is preferably 30-70 ��, more preferably about 60 ��, the drift angle of triangle can be 30-150 ��, it is preferably 45-90 ��, more preferably the circular arc chamfering of about 60 ��. Cover plate incides the light in cell piece gap, can reflect on the side of the first reflective muscle or the second reflective muscle, light after reflection continues to reflex to utilization in battery lamella group 3 behind the back side of cover layer 1, thus further increase the utilization rate of photon, improve the output of photovoltaic module.
In the application, described battery lamella group 3 can include multiple solar battery sheet; Preferably, in parallel and/or series connection mode is adopted to be electrically connected between the plurality of solar battery sheet; It is further preferred that by conducting electricity welding serial or parallel connection between described two adjacent cell pieces. The solar module that the application provides, it is possible to effectively reduce the probability of cell piece dislocation or movement, improve the success rate of welding.
As in figure 2 it is shown, grid mouth 43 is the space separated by clathrum 41. As it is shown in figure 1, a kind of detailed description of the invention is that grid mouth 43 is the space separated by the first reflective muscle and the second reflective muscle, it is arranged in insulation alignment layers 4.
In this utility model, when not making contrary explanation, the noun of locality of use typically refers to accompanying drawing up and down such as " upper and lower, left and right ".
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can being carried out multiple simple variant, these simple variant belong to protection domain of the present utility model.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by this utility model separately.
Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. a back contact solar cell assembly, including insulation alignment layers (4), it is sequentially located at the first adhesive layer (2) and the cover layer (1) of this insulation alignment layers (4) top, it is sequentially located at the second adhesive layer (5) and the backsheet layer (6) of this insulation alignment layers (4) lower section, and it is fixed on battery lamella group (3) on described insulation alignment layers (4), it is characterized in that, this insulation alignment layers (4) include laid out in parallel for fixing back contact solar cell and penetrating the grid mouth (43) of this insulation alignment layers (4), separate the clathrum (41) of this grid mouth (43), described insulation alignment layers (4) also includes on the upper surface of described clathrum (41) for fixing the cell piece ring for fixing (42) of back contact solar cell sheet.
2. back contact solar cell assembly according to claim 1, it is characterised in that the region that described cell piece ring for fixing (42) is positioned on the upper surface of clathrum (41) with the imbricate of the shady face of cell piece.
3. back contact solar cell assembly according to claim 2, it is characterized in that, the described cell piece ring for fixing (42) region by being coated with, print or spraying being close on the upper surface of described clathrum (41) with the imbricate of the shady face of cell piece.
4. the back contact solar cell assembly according to claim 1,2 or 3, it is characterised in that described cell piece ring for fixing (42) is layer of silica gel.
5. back contact solar cell assembly according to claim 1, it is characterised in that described clathrum (41) includes a plurality of orthogonal first reflective muscle and the second reflective muscle.
6. back contact solar cell assembly according to claim 5, it is characterised in that the cross section of described first reflective muscle and the second reflective muscle is that drift angle is at upper triangle.
7. back contact solar cell assembly according to claim 6, it is characterised in that the base angle angle of described triangle is 15-85 ��, the drift angle of described triangle is the circular arc chamfering of 30-150 ��.
8. back contact solar cell assembly according to claim 1, it is characterised in that described battery lamella group (3) includes multiple solar battery sheet.
9. back contact solar cell assembly according to claim 8, it is characterised in that adopt in parallel and/or series connection mode to be electrically connected between the plurality of solar battery sheet.
10. back contact solar cell assembly according to claim 8 or claim 9, it is characterised in that by conducting electricity welding serial or parallel connection between described two adjacent cell pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087253.3U CN205282490U (en) | 2015-12-23 | 2015-12-23 | Back -contact solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087253.3U CN205282490U (en) | 2015-12-23 | 2015-12-23 | Back -contact solar cell module |
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| Publication Number | Publication Date |
|---|---|
| CN205282490U true CN205282490U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521087253.3U Active CN205282490U (en) | 2015-12-23 | 2015-12-23 | Back -contact solar cell module |
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| Country | Link |
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| CN (1) | CN205282490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634976A (en) * | 2018-05-31 | 2019-12-31 | 上海海优威新材料股份有限公司 | Transparent easy-bonding polycarbonate solar cell backboard with grid structure |
-
2015
- 2015-12-23 CN CN201521087253.3U patent/CN205282490U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634976A (en) * | 2018-05-31 | 2019-12-31 | 上海海优威新材料股份有限公司 | Transparent easy-bonding polycarbonate solar cell backboard with grid structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |