CN110600563A - Cut half battery piece and cut half photovoltaic module - Google Patents
Cut half battery piece and cut half photovoltaic module Download PDFInfo
- Publication number
- CN110600563A CN110600563A CN201910854919.XA CN201910854919A CN110600563A CN 110600563 A CN110600563 A CN 110600563A CN 201910854919 A CN201910854919 A CN 201910854919A CN 110600563 A CN110600563 A CN 110600563A
- Authority
- CN
- China
- Prior art keywords
- cut
- cell
- region
- photovoltaic module
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 44
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 239000004411 aluminium Substances 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 9
- 238000007639 printing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003475 lamination Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a half-cut cell piece and a half-cut photovoltaic assembly. The half-cutting battery piece is formed by cutting a battery piece, the battery piece comprises a front surface and a back surface, the back surface of the battery piece comprises an aluminum back surface field area printed with an aluminum back surface field and a non-aluminum back surface field area not printed with the aluminum back surface field, the back surface is provided with two back electrodes which are symmetrically arranged with cutting lines and are positioned on the aluminum back surface field area, and the non-aluminum back surface field area is positioned in an area between the two back electrodes. The invention can avoid the situation of hidden cracking at the cell slice joint in the lamination process of the component, improve the manufacturing efficiency of the photovoltaic component and improve the performance of the photovoltaic component.
Description
Technical Field
The invention belongs to the technical field of photovoltaics, and particularly relates to a half-cut cell and a half-cut photovoltaic module.
Background
Recently, various high-efficiency photovoltaic technologies are developed, and typically, a half-cut assembly of a cell slice and a stack assembly of a cell slice cut into a plurality of small pieces are provided, wherein the typical stack assembly is adhered and conducted between the cell slices through a conductive adhesive tape or a conductive paste. Another technique called ribbon bonding has also become common, in which the battery pieces are cut into a number of small pieces, typically 2 to 8 pieces, and the battery pieces are connected by the ribbon bonding, the battery pieces can approach or overlap each other infinitely, typically the distance between the pieces is 1 to-2 mm, where-2 mm represents the overlapping area of the battery pieces is 2 mm. The technology improves the assembly power and the assembly efficiency by increasing the number of the battery pieces, and has huge development prospect.
However, the above techniques all have common problems: when the battery pieces approach to each other infinitely or are overlapped with each other, the direct contact between the pieces and the welding strip leads to the defects of hidden cracking and breaking of the battery pieces and the like easily generated in the lamination process of the assembly.
Disclosure of Invention
In order to solve the problems, the invention provides a half-cut cell piece which avoids the occurrence of bad conditions such as hidden crack and breakage.
The technical scheme of the invention is as follows: the utility model provides a cut half cell, is formed by the battery piece cutting, the battery piece includes front and back, the back of battery piece is including the aluminium back of the body field region that has the aluminium back of the body field of printing and the non-aluminium back of the body field region that does not have the aluminium back of the body field of printing, the back is provided with two back electrodes that are arranged with cutting line symmetry and are located aluminium back of the body field region, non-aluminium back of the body field region is located the region between two back electrodes, and/or marks along non-aluminium back of the body field region, forms breach region.
When the battery piece is cut into the half-cut battery piece, the battery piece is cut along the cutting line and is divided into two parts, and the non-aluminum back surface field area is also equally divided into two parts, so that the half-cut battery piece is finally obtained. When the half-cut cell is used for manufacturing a half-cut photovoltaic assembly, the thickness of the non-aluminum back surface field area is reduced because the aluminum back surface field is not printed, so that the thickness of the joint of two adjacent half-cut cells is reduced, and the hidden crack and fragment risk of the joint of the cells can be obviously reduced in the lamination process of manufacturing the assembly.
In the invention, the square gap area can be scribed by laser on the edge after the battery piece is cut at the lap joint of the adjacent half-cut battery pieces, and the hidden crack risk between the battery pieces due to the welding strip can not be formed at the welded part of the battery piece processed by the process.
Preferably, the non-aluminum back field regions are symmetrically arranged with the cutting line as a symmetry axis. When the half-cell plates are symmetrically arranged, the half-cell plates obtained by cutting are identical in shape.
Preferably, the non-aluminum back field region is rectangular.
The invention also provides a half-cut photovoltaic assembly which comprises a plurality of half-cut battery pieces, adjacent battery pieces are close to or overlapped, the half-cut battery pieces are the half-cut battery pieces, and back electrodes between the adjacent battery pieces are connected through welding strips.
Preferably, the length of the square gap does not exceed the length of the merging area.
Preferably, the width of the unprinted aluminum back field is generally larger than the width of the cell plate required to be jointed with the cell plate.
Preferably, the width of the overlapping area is 1 to 2 mm.
Preferably, the distance between the adjacent battery pieces is 1-2 mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention can avoid the situation of hidden crack and breakage at the joint of the battery plates in the laminating process of the assembly, improve the manufacturing efficiency of the photovoltaic assembly and improve the performance of the photovoltaic assembly.
Drawings
Fig. 1 is a schematic structural diagram of a typical conventional halved photovoltaic module.
Fig. 2 is a schematic view of a complete cell of the present invention.
Fig. 3 is a schematic structural diagram of a half-cut photovoltaic module according to a first embodiment of the present invention.
Fig. 4 is a schematic structural view of a half-cut cell of the present invention.
Detailed Description
As shown in fig. 2 to 4, the present invention is a half-cut photovoltaic module, which includes a plurality of half-cut cells, adjacent cells are close to or overlapped with each other, the half-cut cells are the above half-cut cells, and back electrodes between the adjacent cells are connected by solder strips.
As shown in fig. 2 to 4, the half-cut cell piece is obtained by half-cutting a whole cell piece, the cell piece comprises a front surface and a back surface, the back surface of the cell piece comprises an aluminum back field region printed with an aluminum back field and a non-aluminum back field region not printed with the aluminum back field, the back surface is provided with two back electrodes which are symmetrically arranged by cutting lines and are positioned on the aluminum back field region, and the non-aluminum back field region is positioned in a region between the two back electrodes.
When the battery piece is cut into the half-cut battery piece, the battery piece is cut along the cutting line and is divided into two parts, and the non-aluminum back surface field area is also equally divided into two parts, so that the half-cut battery piece is finally obtained. When the half-cut cell is used for manufacturing a half-cut photovoltaic assembly, the thickness of the non-aluminum back surface field area is reduced because the aluminum back surface field is not printed, so that the thickness of the joint of two adjacent half-cut cells is reduced, and the hidden crack and fragment risk of the joint of the cells can be obviously reduced in the lamination process of manufacturing the assembly.
The non-aluminum back field areas are symmetrically arranged by taking the cutting line as a symmetry axis. When the half-cell plates are symmetrically arranged, the half-cell plates obtained by cutting are identical in shape.
In the invention, the notch area is formed by scribing along the non-aluminum back field area. In the invention, a square notch area can be scribed by laser at the overlapping part of the adjacent half-cut battery pieces after the battery pieces are cut, and the hidden crack risk caused by welding strips between the battery pieces can not be formed at the welding part of the battery pieces processed by the process.
In general, the non-aluminum back field area is rectangular, and the width of the non-printed aluminum back field is generally larger than the width of the cell to be connected with the cell. If the half-cut cell pieces are overlapped, the width of the overlapped area is 2mm, and the length of the square notch does not exceed the length of the cell combining area.
The invention selects a novel battery piece as shown in figure 2. As shown in fig. 2, the back side aluminum back field is not printed at the edge of the battery to be cut, and the width of the unprinted aluminum back field is generally larger than the width of the battery piece to be jointed with the battery piece. Fig. 3 is a diagram showing the effect of the new cell after the cell is designed and welded.
Furthermore, a square gap area can be scribed by laser on the edge of the cut battery piece at the position of the welding strip at the lap joint of the battery piece and the battery piece, wherein the length of the square gap is not more than that of the piece combining area, as shown in fig. 4, the hidden crack risk caused by the welding strip between the battery piece and the battery piece can not be formed at the welding position of the piece combining area of the battery piece processed by the process.
Claims (9)
1. The utility model provides a cut half cell piece, is formed by the battery piece cutting, the battery piece includes front and back, its characterized in that, the back of battery piece is including the aluminium back of the body field region that has the aluminium back of the body field of printing and the non-aluminium back of the body field region that has not printed the aluminium back of the body field, the back is provided with two back electrodes with cutting line symmetrical arrangement and be located aluminium back of the body field region, non-aluminium back of the body field region is located the region between two back electrodes, and/or draws along non-aluminium back of the body field region, forms the breach region.
2. The half-cut cell sheet of claim 1, wherein the non-aluminum back field regions are symmetrically arranged about the cutting line as an axis of symmetry.
3. The half-cut cell according to claim 1 or 2, wherein the notch region is obtained by laser scribing.
4. The half-cut cell piece of claim 1 or 2, wherein the non-aluminum back field region is rectangular.
5. A half-cut photovoltaic module comprises a plurality of half-cut battery pieces, adjacent battery pieces are close to or overlapped, the half-cut battery pieces are as claimed in any one of claims 1-4, and back electrodes between the adjacent battery pieces are connected through welding strips.
6. The half-cut photovoltaic module of claim 5, wherein the length of the square notch does not exceed the length of the die area.
7. The half-cut photovoltaic module of claim 5, wherein the unprinted aluminum back field width is generally greater than the width of the cell to cell required to interface.
8. The halved photovoltaic module of claim 5, wherein the width of the overlap region is 1-2 mm.
9. The halved photovoltaic module of claim 5, wherein the distance between adjacent cells is 1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854919.XA CN110600563A (en) | 2019-09-10 | 2019-09-10 | Cut half battery piece and cut half photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854919.XA CN110600563A (en) | 2019-09-10 | 2019-09-10 | Cut half battery piece and cut half photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110600563A true CN110600563A (en) | 2019-12-20 |
Family
ID=68858717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910854919.XA Pending CN110600563A (en) | 2019-09-10 | 2019-09-10 | Cut half battery piece and cut half photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110600563A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739966A (en) * | 2020-06-16 | 2020-10-02 | 晶科绿能(上海)管理有限公司 | Cover plate and photovoltaic module |
| US11929444B2 (en) | 2020-06-16 | 2024-03-12 | Jinko Green Energy (Shanghai) Management Co., LTD | Functional part, photovoltaic module and method for manufacturing photovoltaic module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018155752A1 (en) * | 2017-02-22 | 2018-08-30 | 주식회사 탑선 | Solar cell module |
| CN110112244A (en) * | 2019-04-19 | 2019-08-09 | 泰州隆基乐叶光伏科技有限公司 | Solar cell piece, solar battery string and solar module |
| CN110137291A (en) * | 2019-04-19 | 2019-08-16 | 泰州隆基乐叶光伏科技有限公司 | A kind of solar battery sheet and solar cell module |
| CN110137284A (en) * | 2019-05-30 | 2019-08-16 | 晶澳（扬州）太阳能科技有限公司 | Silicon wafer, cell piece, battery half, battery strings and photovoltaic module |
| CN110137282A (en) * | 2019-06-05 | 2019-08-16 | 苏州阿特斯阳光电力科技有限公司 | Solar battery and photovoltaic module |
-
2019
- 2019-09-10 CN CN201910854919.XA patent/CN110600563A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018155752A1 (en) * | 2017-02-22 | 2018-08-30 | 주식회사 탑선 | Solar cell module |
| CN110112244A (en) * | 2019-04-19 | 2019-08-09 | 泰州隆基乐叶光伏科技有限公司 | Solar cell piece, solar battery string and solar module |
| CN110137291A (en) * | 2019-04-19 | 2019-08-16 | 泰州隆基乐叶光伏科技有限公司 | A kind of solar battery sheet and solar cell module |
| CN110137284A (en) * | 2019-05-30 | 2019-08-16 | 晶澳（扬州）太阳能科技有限公司 | Silicon wafer, cell piece, battery half, battery strings and photovoltaic module |
| CN110137282A (en) * | 2019-06-05 | 2019-08-16 | 苏州阿特斯阳光电力科技有限公司 | Solar battery and photovoltaic module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739966A (en) * | 2020-06-16 | 2020-10-02 | 晶科绿能(上海)管理有限公司 | Cover plate and photovoltaic module |
| US11929444B2 (en) | 2020-06-16 | 2024-03-12 | Jinko Green Energy (Shanghai) Management Co., LTD | Functional part, photovoltaic module and method for manufacturing photovoltaic module |
| CN111739966B (en) * | 2020-06-16 | 2024-05-28 | 晶科绿能(上海)管理有限公司 | Cover plate and photovoltaic module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018018908A1 (en) | Solar battery cell and assembly, and preparation process therefor | |
| WO2016188145A1 (en) | Solar cell piece, solar cell module, cell piece unit, and preparation method therefor | |
| WO2019047374A1 (en) | Ribbon structure for stack assembly | |
| CN105789359A (en) | Manufacturing method for double-face solar energy cell assembly | |
| CN110828598B (en) | Half-sheet laminated tile assembly and manufacturing method thereof | |
| CN106384750A (en) | Slice solar cell | |
| CN210156385U (en) | Silicon-based heterojunction solar cell laminated photovoltaic module | |
| CN110600563A (en) | Cut half battery piece and cut half photovoltaic module | |
| CN211578765U (en) | Shingle assembly | |
| CN114220879A (en) | Laminated cell assembly without main grid line electrode and preparation method thereof | |
| CN112234113A (en) | Photovoltaic module | |
| WO2020237854A1 (en) | Photovoltaic cell array and photovoltaic assembly | |
| CN209804688U (en) | Lap joint structure of solar cell and solar assembly | |
| CN210272399U (en) | Strip-shaped solar cell piece, solar cell and photovoltaic module | |
| CN211182228U (en) | Half tile-stacking assembly | |
| CN111029432B (en) | Solar cell string, solar cell assembly and manufacturing method of solar cell string | |
| CN209843731U (en) | Baseline concealed type laminated battery string | |
| CN112447864A (en) | Strip-shaped solar cell piece, solar cell, photovoltaic module and manufacturing method thereof | |
| CN115241294B (en) | Photovoltaic shingle assembly and preparation method thereof | |
| CN109037364B (en) | Double-sided direct-connection solar cell module with segmented through holes and preparation method | |
| EP3057135A1 (en) | Photovoltaic module and method for producing the same | |
| CN212625609U (en) | Photovoltaic module | |
| CN209822662U (en) | Photovoltaic module | |
| CN209896085U (en) | Solar cell, solar cell string and solar cell module | |
| CN210349853U (en) | Welding strip for solar laminated tile assembly and solar laminated tile assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
|
| RJ01 | Rejection of invention patent application after publication |