CN201673916U - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
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- CN201673916U CN201673916U CN 201020191669 CN201020191669U CN201673916U CN 201673916 U CN201673916 U CN 201673916U CN 201020191669 CN201020191669 CN 201020191669 CN 201020191669 U CN201020191669 U CN 201020191669U CN 201673916 U CN201673916 U CN 201673916U
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- Prior art keywords
- battery sheet
- photovoltaic module
- backboard
- sheet group
- utility
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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 relates to the field of photovoltaic technology and provides a photovoltaic module which comprises a battery plate set, a back plate, and polymethylmethacrylate which covers the periphery of the battery plate set and the back plate and is filled between the back plate and the battery plate set. Since the polymethylmethacrylate is used for encapsulating the battery plate set and the back plate and a terminal box and a flat cable are arranged in the photovoltaic module, the terminal box is not required to be separately welded outside. Compared with the photovoltaic module which has the same output power and takes toughened glass as a panel, the weight is lighter and the impact resistance, the tensile strength and the bending strength are higher.
Description
Technical field
The utility model relates to the photovoltaic technology field, is specifically related to a kind of photovoltaic module.
Background technology
Photovoltaic cell is that solar cell is a kind of device that directly luminous energy is changed into electric energy by photoelectric effect or Photochemical effects.With solar cell and the certain combination of other auxiliary material process, reach certain rated output power and one group of photovoltaic cell of output voltage, be photovoltaic module.According to photovoltaic plant size and scale, can form array of all sizes by photovoltaic module.The extensive application of photovoltaic cell has promoted the utilization and the exploitation of new forms of energy, has reduced the quantity of coal generating, has reduced carbon dioxide and sulfur dioxide isothermal chamber gas purging amount, thereby has saved non-renewable resources, protected environment.
The manufacturing of conventional photovoltaic assembly need be passed through following steps: at first the positive back side of battery sheet is welded into battery sheet group, subsequently battery sheet group is connected according to the order of glass plate, EVA, battery sheet group, EVA, backboard with the band that confluxes with glass plate, EVA, backboard and lays, obtain laying cell panel, again the described cell panel that lays is put into laminating machine, by vacuumizing the air in the assembly is extracted out, heating and pressurizing makes the EVA fusing that battery, glass and backboard are bonded together then, obtain photovoltaic module, utilize infrared test to have or not at last more latent to split, blackspot.
The conventional photovoltaic assembly uses EVA as binding agent, between glass plate and battery sheet group and between battery sheet group and the backboard, all be laid with EVA, pass through heat lamination then together with each parts bonding, but in heat lamination, because EVA melts back viscosity height, air is discharged difficulty, cause bubble to occur between each parts, even can layering. had a strong impact on the quality of photovoltaic module, and its inside lays auxiliary material such as multilayer EVA, glass fibre, increased the weight of photovoltaic module greatly.Because EVA viscosity height, EVA is mobile inhomogeneous during hot pressing, causes each unbalance stress of photovoltaic module, easily causes the fragmentation of battery sheet, latent splitting, and has reduced the rate of finished products of photovoltaic module.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of photovoltaic module, has reduced the weight of photovoltaic module compared to existing technology, has improved the intensity of photovoltaic module.
In order to overcome the above problems, the utility model provides a kind of photovoltaic module, comprising: battery sheet group, backboard and be coated on described battery sheet group and backboard around and be filled in polymethyl methacrylate between described backboard and the described battery sheet group.
Preferably, described backboard is by any one preparation in the following material: TPT, TPE, BBF, EVA, toughened glass or have the terylene non-woven fabric of multicolour pattern;
Described TPT is ethylene fluoride-Polyethyleneglycol Terephthalate block copolymer; Described TPE is a thermoplastic elastomer (TPE); Described BBF is PET, EVA and three layers of compound of THV, and described THV is tetrafluoroethene, hexafluoropropylene and the terpolymer of fluoridizing inferior ethene; Described EVA is an ethylene-vinyl acetate copolymer; Described PET is a PETG.
Preferably, described battery sheet group comprises a plurality of battery sheets that are serially connected and the band that confluxes.
Preferably, the battery sheet in the described battery sheet group is: monocrystalline silicon semi-conductor cell sheet, polycrystal silicon cell sheet, GaAs battery sheet or flexible crystal battery sheet.
Preferably, the optoelectronic transformation efficiency of the battery sheet in the described battery sheet group is 18%～20%.
The utility model provides a kind of photovoltaic module, comprising: battery sheet group, backboard and be coated on described battery sheet group and backboard around and be filled in polymethyl methacrylate between described backboard and the described battery sheet group.The utility model uses polymethyl methacrylate packaged battery sheet group and backboard, and the photovoltaic module that provides of the utility model is built-in simultaneously terminal box and winding displacement do not need externally to weld separately terminal box.Than identical power output be that the photovoltaic module of panel is in light weight with toughened glass, what impact resistance and hot strength, bending strength all were higher than equal power output simultaneously is the photovoltaic module of panel with toughened glass.
Description of drawings
The schematic diagram of the photovoltaic module that Fig. 1 the utility model provides.
Embodiment
In order further to understand the utility model, below in conjunction with embodiment preferred embodiment of the present utility model is described, but should be appreciated that these are described just is the restriction that further specifies feature and advantage of the present utility model rather than the utility model patent is required.
The utility model also provides a kind of photovoltaic module, comprising: battery sheet group, backboard and be coated on described battery sheet group and backboard around and be filled in polymethyl methacrylate between described backboard and the described battery sheet group.The number of the battery sheet that contains in the battery sheet group in the utility model is preferably 2～100 more preferably 10～50, and described battery sheet is connected according to the order of both positive and negative polarity obtains battery sheet group.Described battery sheet is organic silicon cell well known in the art, gallium arsenide semiconductor battery sheet or flexible crystal battery sheet, the utility model preferred flexible crystal battery sheet, and the optoelectronic transformation efficiency of described flexible crystal battery sheet is preferably 18%～20%.According to the utility model, described backboard is selected TPT well known in the art, TPE, BBF, EVA, toughened glass for use or is had the terylene non-woven fabric of multicolour pattern.Described TPT is ethylene fluoride-Polyethyleneglycol Terephthalate block copolymer; Described TPE is a thermoplastic elastomer (TPE); Described BBF is PET, EVA and three layers of compound of THV, and described THV is tetrafluoroethene, hexafluoropropylene and the terpolymer of fluoridizing inferior ethene; Described EVA is an ethylene-vinyl acetate copolymer, and described PET is a PETG.The molecular weight that the polymethyl methacrylate that the utility model uses makes by polymerisation in bulk after mixing with initator as the Methyl Methacrylate monomer is 2 * 10
5～5 * 10
5Polymethyl methacrylate.The photovoltaic module structure that the utility model provides as shown in Figure 1, by backboard 2, battery sheet group 3 and be coated on described battery sheet group and backboard around and the polymethyl methacrylate 1 that is filled between described backboard and the described battery sheet group form.
The preparation method of the photovoltaic module that the utility model provides is as follows: backboard is laid in the mould; Battery sheet group is laid on the described backboard; The mixture of methyl methacrylate prepolymer and initator is injected described mould, the mixture of described methyl methacrylate prepolymer and initator is filled between described backboard and the described battery sheet group, and is wrapped in the outside of described backboard and described battery sheet group;
Heating described mould to 100 ℃～110 ℃ and insulation makes described methyl methacrylate prepolymer carry out polymerization reaction to obtain photovoltaic module by the polymethyl methacrylate encapsulation.
According to the utility model, at first methyl methacrylate monomer is distilled, remove wherein impurity reaching the purpose of purification, methyl methacrylate monomer after will purifying then and initator are 1000: 1～3 reactions by mass ratio preferably, preparation methyl methacrylate prepolymer.Described initator is benzoyl peroxide (BPO) and/or azodiisobutyronitrile (AIBN).Because methyl methacrylate monomer is littler than the density of polymethyl methacrylate, so in described monomer polymerization process, volume can shrink, so when the preparation polymethyl methacrylate, must want earlier pre-polymerization.The utility model is not subjected to the influence of the volume contraction in the methyl methacrylate polymerization process for the preparation process that makes photovoltaic module, also adopted the at first method of synthesizing methylmethacrylate prepolymer, that methyl methacrylate prepolymer described in the utility model is meant is that methyl methacrylate forms through prepolymerization reaction (prepolymerization), composition is the mixture that comprises methyl methacrylate monomer and polymethyl methacrylate.It is 1000: 1～3 to mix by weight that described methyl methacrylate prepolymer preparation method is preferably methyl methacrylate monomer and initator, obtains mixed liquor; In temperature is 60 ℃～80 ℃ described mixed liquor 30min～90min of heating down, is incubated 1h～2h down at 40 ℃～50 ℃ again, obtains the methyl methacrylate prepolymer.
Because the photovoltaic module that the utility model will prepare belongs to the high accuracy product, monomer in the prepolymer that casting is used can not be too much, can not be very few, so will control the middle monomer of prepolymer and the content of polymer, be that monomer and polymer are preferably 30～60 by mass ratio in the described methyl methacrylate prepolymer: 40～70, more preferably 40～50: 50～60.Can alleviate the pressure that the volume contraction in the polymethyl methacrylate monomer polymerization process brings for battery sheet group and backboard like this, have enough flowabilities again, can make described prepolymer be full of mould.In order further to control the infringement that the polymethyl methacrylate monomer polymerization brings for battery sheet group and backboard, the mould inner wall that provides at the utility model is provided with the feeding hole, preferred 1～10 of the number in described feeding hole, more preferably 4～8, in the process of casting, the methyl methacrylate prepolymer that flows into the feeding hole can replenish the VOLUME LOSS that the methyl methacrylate monomer polymerization causes, thereby has guaranteed the quality of photovoltaic module.In addition, the utility model has used flexible crystal battery sheet, and flexible crystal battery sheet has certain elasticity and pliability, can alleviate the injury of the stress of battery sheet in the preparation process of welding and photovoltaic module to the battery sheet, reduce the cracked probability of battery sheet, improve the quality of products.
According to the utility model, the sequence arrangement that flexible crystal battery sheet is connected according to both positive and negative polarity, and preferably use the copper tape welding that confluxes to connect, obtain battery sheet group, lay backboard earlier and on backboard, lay the order of battery sheet group again, described backboard and described battery sheet group are laid in the mould, with the mixture injection mould of methyl methacrylate prepolymer and initator.The mould that the utility model uses is to make according to the shape of photovoltaic module and size, the material that uses is mild steel well known in the art, cast iron etc., the utility model does not limit, preferred one deck release agent that applies in mould, described release agent is paraffin well known in the art, siloxanes, dimethyl silicone polymer, polyvinyl alcohol, stearic acid or stearate etc., and the utility model is not done qualification.The employed initator of the utility model is BPO and/or AIBN, and the utility model preferably uses AIBN, and described AIBN and described methyl methacrylate prepolymer are preferably 1～3: 97～99 by weight.
After the methyl methacrylate prepolymer is full of mould, mould is airtight, and under normal pressure heating described mould to 100 ℃～110 ℃, insulation 20h～30h, methyl methacrylate monomer in the prepolymer of methyl methacrylate described in the insulating process and low-molecular-weight polymethyl methacrylate can continue the polymethyl methacrylate that polymerization forms HMW.After insulation finishes, battery sheet group and backboard are encapsulated in the polymethyl methacrylate of curing and form photovoltaic module, then photovoltaic cell component are taken out, whether preferably photovoltaic module is carried out edging, flushing, drying, it is cracked to carry out infrared light detection battery sheet then.
The utility model uses polymethyl methacrylate packaged battery sheet group and backboard, and the photovoltaic module that provides of the utility model is built-in simultaneously terminal box and winding displacement do not need externally to weld separately terminal box.Than identical power output be that the photovoltaic module of panel is in light weight with toughened glass, what impact resistance and hot strength, bending strength all were higher than equal power output simultaneously is the photovoltaic module of panel with toughened glass.
More than a kind of photovoltaic module that the utility model is provided be described in detail; having used specific case herein sets forth principle of the present utility model and execution mode; the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (5)
1. a photovoltaic module is characterized in that, comprising: battery sheet group, backboard and be coated on described battery sheet group and backboard around and be filled in polymethyl methacrylate between described backboard and the described battery sheet group.
2. photovoltaic module according to claim 1 is characterized in that, described backboard is by any one preparation in the following material: TPT, TPE, BBF, EVA, toughened glass or have the terylene non-woven fabric of multicolour pattern;
Described TPT is ethylene fluoride-Polyethyleneglycol Terephthalate block copolymer; Described TPE is a thermoplastic elastomer (TPE); Described BBF is PET, EVA and three layers of compound of THV, and described THV is tetrafluoroethene, hexafluoropropylene and the terpolymer of fluoridizing inferior ethene; Described EVA is an ethylene-vinyl acetate copolymer; Described PET is a PETG.
3. photovoltaic module according to claim 1 is characterized in that, described battery sheet group comprises a plurality of battery sheets that are serially connected and the band that confluxes.
4. photovoltaic module according to claim 1 is characterized in that, the battery sheet in the described battery sheet group is: monocrystalline silicon semi-conductor cell sheet, polycrystal silicon cell sheet, GaAs battery sheet or flexible crystal battery sheet.
5. photovoltaic module according to claim 1 is characterized in that, the optoelectronic transformation efficiency of the battery sheet in the described battery sheet group is 18%～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020191669 CN201673916U (en) | 2010-05-17 | 2010-05-17 | Photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020191669 CN201673916U (en) | 2010-05-17 | 2010-05-17 | Photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201673916U true CN201673916U (en) | 2010-12-15 |
Family
ID=43331324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020191669 Expired - Fee Related CN201673916U (en) | 2010-05-17 | 2010-05-17 | Photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201673916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709284A (en) * | 2022-03-31 | 2022-07-05 | 盐城百佳年代薄膜科技有限公司 | Photovoltaic cell assembly with EVA (ethylene-vinyl acetate) adhesive film reflection structure |
-
2010
- 2010-05-17 CN CN 201020191669 patent/CN201673916U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709284A (en) * | 2022-03-31 | 2022-07-05 | 盐城百佳年代薄膜科技有限公司 | Photovoltaic cell assembly with EVA (ethylene-vinyl acetate) adhesive film reflection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN YINGLI NEW ENERGY CO., LTD. Free format text: FORMER OWNER: YINGLI ENERGY (CHINA) CO., LTD. Effective date: 20120524 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 071051 BAODING, HEBEI PROVINCE TO: 300201 HEXI, TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120524 Address after: 300201 Binhai science and Technology Park, Binhai hi tech Zone, 13888 Jin Han Road, Tianjin Patentee after: Tianjin Yingli New Energy Co.,Ltd. Address before: 071051 Chaoyang North Street, Hebei, Baoding, No. 3399 Patentee before: Yingli Energy (China) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20160517 |