CN203406305U - Novel back-contact battery assembly - Google Patents
Novel back-contact battery assembly Download PDFInfo
- Publication number
- CN203406305U CN203406305U CN201320509166.7U CN201320509166U CN203406305U CN 203406305 U CN203406305 U CN 203406305U CN 201320509166 U CN201320509166 U CN 201320509166U CN 203406305 U CN203406305 U CN 203406305U
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- Prior art keywords
- contact battery
- body contact
- film
- glass
- eva
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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
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Abstract
The utility model discloses a novel back-contact battery assembly which is characterized in that the novel back-contact battery assembly comprises a back-contact battery; the back of the back-contact battery is sequentially stacked with an EVA film, a conductive glue layer, a conductive film and a glass substrate; the EVA film is provided with punched holes; and the conductive glue layer is in contact with the back of the back-contact battery through the punched holes. The encapsulation efficiency is greatly improved, and the problem that a back-contact battery assembly cannot be mass-produced is solved.
Description
Technical field
The utility model relates to battery component, and specifically a kind of Novel back contact battery component, utilizes glass plate to replace traditional backboard.
Background technology
Under the overall background of global energy crisis, solar cell becomes the bright nova in green energy resource field with its distinctive photovoltaic effect and nonstaining property.This powerful characteristic that ubiquitous sunlight can be converted to electric energy and utilize for the mankind, causes whole world scholars' continuous exploration and application.Wherein crystal-silicon solar cell has obtained significant progress and development especially.
In recent years, polycrystalline silicon solar cell market competition is growing more intense, and various new solar cell arises at the historic moment, and wherein carrying on the back contact crystalline silicon solar cell is one of representative wherein.Back of the body contact solar cell is guided to backplate with the electric current that conductive silver paste produces battery front side by hole or silicon chips periphery, and the electric current that the thin grid in front of battery converge is guided to the back side by the silver slurry in hole.Back of the body contact battery front side dereliction grid line, effectively reduces grid line to the covering of light, and effectively improves sunlight utilance, improves cell photoelectric conversion efficiency.But back of the body contact battery is because positive electrode and back electrode are all at cell backside, and its encapsulation technology is different from traditional battery packaging technology, and production cost is high, and complex technical process is unfavorable for large-scale production.So existing production process is needed a kind of novel back of the body contact battery component encapsulation technology badly, thereby further reduces production costs, and improves packaging efficiency, realizes the large-scale production of back of the body contact battery component.
Utility model content
The purpose of this utility model is to provide a kind of Novel back contact battery component, and packaging efficiency is improved greatly, solves the problem that back of the body contact battery component cannot large-scale production.
The purpose of this utility model is achieved through the following technical solutions: a kind of Novel back contact battery component, it is characterized in that: comprise back of the body contact battery, back of the body contact cell backside has stacked gradually EVA film, conductive adhesive layer, conductive film, substrate of glass, EVA film is provided with punching, and conductive adhesive layer sees through punching and contacts cell backside contact with the back of the body.
In conventional polycrystalline silicon solar cell encapsulation process, mainly comprise sorting, single weldering, series welding, lamination, middle survey, lamination, frame up, standing, clean, survey eventually, packaging and other steps.But conventional encapsulation technology is not suitable for positive electrode contacts battery with the back of the body that back electrode is all positioned at cell backside.And at present application contact the encapsulation technology of battery and places for comprising sorting, backboard with the back of the body, conducting resinl printing, EVA punching, cell piece is placed, outward appearance detects, EVA, glass is placed, lamination, frame up, standing, clean, whole survey, packaging and other steps.Wherein back veneer material is the assembly of multiple material, and its cost accounts for 15% left and right of whole packaging cost, and complex structure, and technique for applying is complicated.
The utility model adopts substrate of glass to replace traditional multilayer backboard, and traditional backboard production process is directly replaced by substrate of glass.Whole encapsulation step is shortened greatly.
Described conductive film is copper film or aluminium film or silverskin or graphene film.
Preferably, substrate of glass is simple glass plate or armorplate glass.
Preferably, EVA film thickness is 0.2 millimeter.
Punching is over against the conduction hole of back of the body contact battery.
It is transparent or semitransparent that conductive film adopts nano material to make, conductive film adopt carbon nano-tube or and grapheme material or and nano metal material form, can be applied to double-side cell.
The negative pole that conduction hole is guiding back of the body contact battery front side is to the through hole of back of the body contact cell backside.
Traditional back veneer material is replaced to simple glass material, at glass surface, prepare conductive film, as Novel back plate material.
Conduction hole is directed to back of the body contact cell backside by the negative pole of back of the body contact battery front side, by conductive adhesive layer, is directed to again conductive film, by conductive film, draws.
Encapsulation process is:
1, cell piece sorting: the back of the body contact battery of production is carried out to sorting by photoelectric conversion efficiency;
2, backboard preparation: use several different methods to prepare conductive film in surface of ordinary glass, form back veneer material;
3, printing conductive glue on backboard, and EVA is carried out to punching, keep the good contact of battery and conducting resinl;
4, back of the body contact cell piece is positioned over to EVA surface, carries out outward appearance detection;
5, on the appeal back of the body contact cell piece back side, place EVA, toughened glass, carries out laminating technology by laminating machine;
6, framing up, standing, after cleaning and surveying eventually, complete the encapsulation of back of the body contact battery component.
7, traditional back veneer material is replaced to simple glass material, at glass surface, prepare conductive film, as Novel back plate material.
Step 2, described replaces back veneer material with simple glass.
Step 2, at the conductive film of preparing on glass, conductive film can be copper film, aluminium film, silverskin or graphene film.
Step 2, comprises in the method for preparing conductive film on glass: direct print process, galvanoplastic, chemical meteorology deposition method, magnetron sputtering method and direct mounting method.
The utility model has the advantage of: application at present contacts the encapsulation technology of battery and places for comprising sorting, backboard with the back of the body, conducting resinl printing, EVA punching, cell piece is placed, and outward appearance detects, EVA, glass is placed, lamination, frame up, standing, clean, survey eventually, packaging and other steps.Wherein back veneer material is the assembly of multiple material, and its cost accounts for 15% left and right of whole packaging cost, and complex structure, and technique for applying is complicated.Be unfavorable for large-scale production.So existing production process is needed a kind of novel back of the body contact battery component encapsulation technology badly, thereby further reduces production costs, and improves packaging efficiency, realizes the large-scale production of back of the body contact battery component.
Accompanying drawing explanation
fig. 1 is schematic side view of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment 1:
As shown in Figure 1.
A kind of Novel back contact battery component, it is characterized in that: comprise back of the body contact battery 1, back of the body contact cell backside has stacked gradually EVA film 2, conductive adhesive layer, conductive film 3, substrate of glass 4, and EVA film 2 is provided with punching, and conductive adhesive layer sees through punching and contacts battery 1 back side contact with the back of the body.
In conventional polycrystalline silicon solar cell encapsulation process, mainly comprise sorting, single weldering, series welding, lamination, middle survey, lamination, frame up, standing, clean, survey eventually, packaging and other steps.But conventional encapsulation technology is not suitable for positive electrode contacts battery with the back of the body that back electrode is all positioned at cell backside.And at present application contact the encapsulation technology of battery and places for comprising sorting, backboard with the back of the body, conducting resinl printing, EVA punching, cell piece is placed, outward appearance detects, EVA, glass is placed, lamination, frame up, standing, clean, whole survey, packaging and other steps.Wherein back veneer material is the assembly of multiple material, and its cost accounts for 15% left and right of whole packaging cost, and complex structure, and technique for applying is complicated.
The utility model adopts substrate of glass to replace traditional multilayer backboard, and traditional backboard production process is directly replaced by substrate of glass.Whole encapsulation step is shortened greatly.
Described conductive film 3 is copper film or aluminium film or silverskin or graphene film.
Substrate of glass 4 is simple glass plate or armorplate glass.
EVA film 2 thickness are 0.2 millimeter.
Punching is over against the conduction hole of back of the body contact battery 1.
It is transparent or semitransparent that conductive film 3 adopts nano materials to make, conductive film 3 adopt carbon nano-tube or and grapheme material or and nano metal material form.
The negative pole that conduction hole is guiding back of the body contact battery 1 front is to the through hole at back of the body contact battery 1 back side.
Encapsulation process is:
1, cell piece sorting: the back of the body contact battery of production is carried out to sorting by photoelectric conversion efficiency;
2, backboard preparation: use is directly pasted method and pasted copper film in surface of ordinary glass, forms back veneer material;
3, printing conductive glue on backboard, and EVA is carried out to punching, keep the good contact of battery and conducting resinl;
4, back of the body contact cell piece is positioned over to EVA surface, carries out outward appearance detection;
5, on appeal cell piece, place EVA, toughened glass, carries out laminating technology by laminating machine;
6, framing up, standing, after cleaning and surveying eventually, complete the encapsulation of back of the body contact battery component.
Embodiment 2
The difference of the present embodiment and embodiment 1 is that encapsulation process is:
1, back of the body contact battery sorting: the back of the body contact battery of production is carried out to sorting by photoelectric conversion efficiency;
2, backboard preparation: use chemical gaseous phase depositing process to plate graphene film in surface of ordinary glass, form back veneer material;
3, printing conductive glue on backboard, and EVA is carried out to punching, keep the good contact of back of the body contact cell backside and conducting resinl;
4, back of the body contact battery is positioned over to EVA surface, carries out outward appearance detection;
5, on appeal back of the body contact battery, place EVA, simple glass, carries out laminating technology by laminating machine;
6, framing up, standing, cleaning and final test complete the encapsulation of back of the body contact battery component after surveying.
Embodiment 3
The difference of the present embodiment and embodiment 1 is that encapsulation process is:
1, back of the body contact battery sorting: the back of the body contact battery of production is carried out to sorting by photoelectric conversion efficiency;
2, backboard preparation: use direct print process to print graphene film in surface of ordinary glass, form back veneer material;
3, printing conductive glue on backboard, and EVA is carried out to punching, keep the good contact of back of the body contact battery and conducting resinl;
4, metal piercing back of the body contact battery is positioned over to EVA surface, carries out outward appearance detection;
5, on appeal back of the body contact battery, place EVA, simple glass, carries out laminating technology by laminating machine;
6, framing up, standing, after cleaning and surveying eventually, complete the encapsulation of back of the body contact battery component.
Embodiment 4
The difference of the present embodiment and embodiment 1 is that encapsulation process is:
1, back of the body contact battery sorting: the back of the body contact battery of production is carried out to sorting by photoelectric conversion efficiency;
2, backboard preparation: use direct print process to form aluminium conducting film in surface of ordinary glass, form back veneer material;
3, printing conductive glue on backboard, and EVA is carried out to punching, keep the good contact of back of the body contact battery and conducting resinl;
4, IBC back of the body contact cell piece is positioned over to EVA surface, carries out outward appearance detection;
5, on appeal back of the body contact battery, place EVA, simple glass, carries out laminating technology by laminating machine;
6, framing up, standing, after cleaning and surveying eventually, complete the encapsulation of back of the body contact battery component.
Embodiment 5
The difference of the present embodiment and embodiment 1 is that encapsulation process is:
1, back of the body contact battery sorting: the back of the body contact battery of production is carried out to sorting by photoelectric conversion efficiency;
2, backboard preparation: use magnetron sputtering method to form silver conductive film in surface of ordinary glass, form back veneer material;
3, printing conductive glue on backboard, and EVA is carried out to punching, keep the good contact of back of the body contact battery and conducting resinl;
4, IBC back of the body contact cell piece is positioned over to EVA surface, carries out outward appearance detection;
5, on appeal back of the body contact battery, place EVA, toughened glass, carries out laminating technology by laminating machine;
6, framing up, standing, after cleaning and surveying eventually, complete the encapsulation of back of the body contact battery component.
As above can realize preferably the utility model.
Claims (5)
1. a Novel back contacts battery component, it is characterized in that: comprise back of the body contact battery (1), back of the body contact cell backside has stacked gradually EVA film (2), conductive adhesive layer, conductive film (3), substrate of glass (4), EVA film (2) is provided with punching, and conductive adhesive layer sees through punching and contacts the contact of battery (1) back side with the back of the body.
2. a kind of Novel back contact battery component according to claim 1, is characterized in that: described conductive film (3) is copper film or aluminium film or silverskin or graphene film.
3. a kind of Novel back contact battery component according to claim 1, is characterized in that: substrate of glass (4) is simple glass plate or armorplate glass.
4. according to a kind of Novel back contact battery component described in any one in claim 1-3, it is characterized in that: EVA film (2) thickness is 0.2 millimeter.
5. according to a kind of Novel back contact battery component described in any one in claim 1-3, it is characterized in that: punching is over against the conduction hole of back of the body contact battery (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320509166.7U CN203406305U (en) | 2013-08-20 | 2013-08-20 | Novel back-contact battery assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320509166.7U CN203406305U (en) | 2013-08-20 | 2013-08-20 | Novel back-contact battery assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406305U true CN203406305U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201320509166.7U Expired - Fee Related CN203406305U (en) | 2013-08-20 | 2013-08-20 | Novel back-contact battery assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169509A (en) * | 2016-08-22 | 2016-11-30 | 四川英发太阳能科技有限公司 | A kind of Novel back contact cell apparatus being beneficial to encapsulation |
| CN106206777A (en) * | 2016-08-22 | 2016-12-07 | 四川英发太阳能科技有限公司 | A kind of low cost, the back contact battery of large-scale production |
| CN107958943A (en) * | 2017-12-26 | 2018-04-24 | 南京日托光伏科技股份有限公司 | A kind of photovoltaic module and production method based on IBC cell packages |
-
2013
- 2013-08-20 CN CN201320509166.7U patent/CN203406305U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169509A (en) * | 2016-08-22 | 2016-11-30 | 四川英发太阳能科技有限公司 | A kind of Novel back contact cell apparatus being beneficial to encapsulation |
| CN106206777A (en) * | 2016-08-22 | 2016-12-07 | 四川英发太阳能科技有限公司 | A kind of low cost, the back contact battery of large-scale production |
| CN107958943A (en) * | 2017-12-26 | 2018-04-24 | 南京日托光伏科技股份有限公司 | A kind of photovoltaic module and production method based on IBC cell packages |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20170820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |