CN221226242U - Solar cell assembly and cell string - Google Patents
Solar cell assembly and cell string Download PDFInfo
- Publication number
- CN221226242U CN221226242U CN202421165240.2U CN202421165240U CN221226242U CN 221226242 U CN221226242 U CN 221226242U CN 202421165240 U CN202421165240 U CN 202421165240U CN 221226242 U CN221226242 U CN 221226242U
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- adhesive film
- solar cell
- section
- main grid
- welding strip
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- 239000002313 adhesive film Substances 0.000 claims abstract description 75
- 238000003466 welding Methods 0.000 claims abstract description 74
- 239000003292 glue Substances 0.000 claims description 25
- 239000000853 adhesive Substances 0.000 claims description 24
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 12
- 238000003475 lamination Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Photovoltaic Devices (AREA)
Abstract
The utility model relates to the technical field of manufacturing of photovoltaic modules, and particularly discloses a solar cell assembly and a cell string. The solar cell assembly comprises a welding strip group and two non-main grid cells arranged side by side, wherein the welding strip in the welding strip group comprises a first welding strip section positioned on the front surface of one non-main grid cell and a second welding strip section extending to the back surface of the other non-main grid cell; the first welding strip section is fixedly connected with a corresponding battery piece without a main grid through a first adhesive film extending along the length direction of the first welding strip section; the second welding strip section is divided into a non-limiting section and a limiting section, and the non-limiting section is fixedly connected with a corresponding battery piece without a main grid through a second adhesive film extending along the length direction of the non-limiting section; the limiting section is fixedly connected with the corresponding battery piece without the main grid through a third adhesive film extending along the length direction of the limiting section. The solar cell assembly and the cell string can effectively solve the problem that the welding strip is separated from the cell without the main grid, ensure the string effect and ensure the stability of the back-end lamination process.
Description
Technical Field
The utility model relates to the technical field of manufacturing of photovoltaic modules, in particular to a solar cell module and a cell string.
Background
The battery string without the main grid is formed by connecting a plurality of battery pieces and welding strips for connecting the positive electrode and the negative electrode of two adjacent battery pieces in series. In the presently employed string process, individual battery cell assemblies with a welded string set are first prepared and then each battery cell assembly is stacked into a string. In the step of preparing the single battery piece component, the welding strip group part on the battery piece is easily fixed on the battery piece in a rubberizing mode, and when the welding strip extending part of the battery piece component, which extends out of the battery piece, is stacked on the back face of the battery piece of the previous battery piece component, the welding strip extending part is easily deflected. To avoid deflection of the weld extension, the weld extension is typically restrained or positioned by placing a restraining member on the previous battery cell assembly prior to stacking and then secured by taping. However, in the rubberizing process, the welding strip part cannot be fixed by rubberizing due to the existence of the limiting component; in the rear end lamination or welding process, the welding strip is easy to separate from the battery piece, so that the normal serial connection of the battery pieces is affected.
Disclosure of Invention
The utility model aims to provide a solar cell assembly and a cell string, which can effectively solve the problem that a welding strip is separated from a cell without a main grid, ensure the stringing effect and ensure the stability of a back-end lamination process.
To achieve the purpose, the utility model adopts the following technical scheme:
The solar cell assembly comprises a welding strip group and two non-main grid cells arranged side by side, wherein the welding strip in the welding strip group comprises a first welding strip section positioned on the front surface of one non-main grid cell and a second welding strip section extending to the back surface of the other non-main grid cell;
The first welding strip section is fixedly connected with the corresponding battery piece without the main grid through a first adhesive film extending along the length direction of the first welding strip section;
The second welding strip section is divided into a non-limiting section and a limiting section, and the non-limiting section is fixedly connected with the corresponding battery piece without the main grid through a second adhesive film extending along the length direction of the non-limiting section; the limiting section is fixedly connected with the corresponding battery piece without the main grid through a third adhesive film extending along the length direction of the limiting section.
Further, two ends of the first adhesive film in the length direction are aligned with two sides of the corresponding battery piece without the main grid respectively.
Further, a gap between the third adhesive film and the second adhesive film is 0, or the third adhesive film covers the end part of the second adhesive film.
Further, the first adhesive film and/or the second adhesive film are/is a whole adhesive film, or comprise a plurality of adhesive tapes arranged at intervals, and one adhesive tape covers at least one first welding strip section or at least one non-limiting section.
Further, the first welding strip section is adhered to the corresponding battery piece without the main grid through at least two first adhesive points; wherein two first glue points are respectively arranged close to two ends of the first welding strip section.
Further, the first adhesive film is provided with at least two first adhesive points avoiding positions.
Further, the first glue sites are UV glue sites or thermosetting glue sites.
Further, the second welding strip section is adhered to the corresponding battery piece without the main grid through at least two second adhesive points; the second glue point is arranged at one end of the non-limiting section, which is far away from the limiting section; the third adhesive film is arranged close to the first welding strip section, and a second adhesive point is arranged between the third adhesive film and the second adhesive film.
Further, the second adhesive film is provided with at least one second adhesive point avoidance position; and a gap is reserved between the third adhesive film and the second adhesive film so as to expose the corresponding dispensing position of the second adhesive point.
The utility model also provides a battery string which comprises at least one solar cell assembly.
The beneficial effects of the utility model are as follows:
1. According to the solar cell assembly and the cell string, the first adhesive film, the second adhesive film and the third adhesive film form a good protective layer on the welding strip, so that the welding strip and the cell without the main grid are prevented from being partially separated in the lamination welding process, the string forming effect is ensured, and the stability of the back-end lamination process is ensured.
2. According to the solar cell assembly and the cell string, the at least two first glue points and the at least two second glue points are additionally arranged on the welding strip, so that a stable straightening structure of the welding strip is formed, and the welding strip is prevented from being separated from the surface of the cell without the main grid due to the hot spot effect in the process of using the cell string in the later period.
3. According to the solar cell assembly and the cell string, when the defect of the cell without the main grid is detected, the third adhesive film positioned on the back surface of the cell without the main grid is torn off, the corresponding limiting section is cut off, and then the damaged cell without the main grid is replaced by the normal cell without the main grid, so that the whole cell string can be normally put into use, and the repair of the cell string is facilitated.
Drawings
Fig. 1 is a schematic front view of a solar cell module according to an embodiment of the present utility model.
Fig. 2 is a schematic view of a back structure of an embodiment of a solar cell module according to the present utility model.
Fig. 3 is a schematic view of the back structure of the solar cell module according to the present utility model when the second adhesive film and the third adhesive film are omitted.
Fig. 4 is a schematic diagram showing the front structure of an embodiment of a battery string according to the present utility model.
Fig. 5 is a schematic view showing a rear structure of an embodiment of a battery string according to the present utility model.
Fig. 6 is a schematic front view of another embodiment of a solar cell module according to the present utility model.
Fig. 7 is an enlarged schematic view of fig. 6 at i.
Fig. 8 is a schematic view of a back structure of another embodiment of a solar cell module according to the present utility model.
Fig. 9 is an enlarged schematic view at ii in fig. 8.
Fig. 10 is a schematic front view of another embodiment of a battery string provided by the present utility model.
Fig. 11 is a schematic view showing a rear structure of another embodiment of a battery string provided by the present utility model.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 3, a solar cell module includes a solder ribbon set and two non-main grid cells 1 arranged side by side. Wherein, the welding strip 2 in the welding strip group comprises a first welding strip section 21 positioned on the front surface of one non-main grid battery piece 1 and a second welding strip section 22 extending to the back surface of the other non-main grid battery piece 1; the first welding strip section 21 is fixedly connected with the corresponding battery piece 1 without the main grid through a first adhesive film 3 extending along the length direction of the first welding strip section; the second welding strip section 22 is divided into a non-limiting section 221 and a limiting section 222, and the non-limiting section 221 is fixedly connected with the corresponding battery piece 1 without the main grid through a second adhesive film 4 extending along the length direction of the non-limiting section; the limiting section 222 is fixedly connected with the corresponding cell 1 without the main grid through a third adhesive film 5 extending along the length direction of the limiting section.
In this embodiment, the first adhesive film 3, the second adhesive film 4 and the third adhesive film 5 are used to fix the solder strip, and a protective layer can be formed on the solder strip 2 to prevent glue overflow during the back-end lamination process. Preferably, the two ends of the first adhesive film 3 in the length direction are aligned with the two sides of the corresponding battery piece 1 without the main grid respectively, the gap between the third adhesive film 5 and the second adhesive film 4 is 0, or the third adhesive film 5 covers the end part of the second adhesive film 4, so that the first welding strip section 21 and the second welding strip section 22 of the welding strip 2 can be ensured to be attached and fixed.
Further, the first adhesive film 3 and/or the second adhesive film 4 are a whole adhesive film, or include a plurality of adhesive tapes arranged at intervals, wherein one adhesive tape covers at least one first welding strip section 21 or at least one non-limiting section 221. As a preferred embodiment of the present embodiment, a glue strip covers a first solder strip section 21 or a non-limiting section 221. The third adhesive film 4 covers all the limiting sections 22 of the second welding strip sections 22. Preferably, the first adhesive film 3, the second adhesive film 4 and the third adhesive film 5 are all adhesive films with low fluidity such as EVA.
In the solar cell assembly of the embodiment, a first adhesive film 3 is adopted to fix a first welding strip section 21 of a welding strip 2 on the front surface of a cell 1 without a main grid; the non-main grid battery piece 1 is turned over and then paved, and the limiting member placed on the adjacent non-main grid battery piece 1 is used for limiting or positioning the limiting section 222 of the second welding strip section 22, so that the second welding strip section 22 is accurately paved on the back surface of the adjacent non-main grid battery piece 1; fixing the non-limiting section 221 of the second welding strip section 22 by adopting the second adhesive film 4; and removing the limiting member, and fixing the limiting section 222 of the second welding strip section 22 by adopting the third adhesive film 5, so as to obtain the solar cell assembly. The first welding strip section 21 and the second welding strip section 22 of the welding strip 2 in the solar cell assembly are provided with good protective layers, so that partial separation between the welding strip 2 and the cell 1 without the main grid in the lamination welding process can be effectively avoided, the stringing effect is ensured, and the stability of the back-end lamination process is ensured.
Example two
As shown in fig. 4 and 5, a battery string includes at least one solar cell module of the first embodiment. Wherein, the structure of each solar cell assembly refers to the first embodiment; the two solar cell assemblies are positioned at the head end and the tail end of the cell string, and the extended welding strip parts are respectively used as two electrode leading-out ends of the cell string.
Example III
As shown in fig. 6 to 9, a solar cell module of the present embodiment is different from the first embodiment mainly in that: the first welding strip section 21 is adhered with the corresponding battery piece 1 without the main grid through at least two first adhesive points 6; the first adhesive film 3 is provided with at least two first adhesive point avoidance positions for avoiding corresponding first adhesive points 6 or exposing the adhesive dispensing positions of the corresponding first adhesive points 6. The second welding strip section 22 is adhered with the corresponding battery piece 1 without the main grid through at least two second adhesive points 7; the second adhesive film 4 is provided with at least one second adhesive point avoiding position for avoiding the corresponding second adhesive point 7 or exposing the adhesive dispensing position of the corresponding second adhesive point 7; a gap is reserved between the third adhesive film 5 and the second adhesive film 4 so as to expose the dispensing position of the corresponding second adhesive point 7.
In this embodiment, two first glue sites 6 are respectively disposed near two ends of the first solder strip section 21. These first glue sites 6 may be used to further stabilize the straightened state of the first solder strip section 21 to prevent loosening between the solder strip 2 and the grid-less battery plate 1 due to hot spot effects.
In this embodiment, a second glue dot 7 is disposed at one end of the non-limiting section 221 away from the limiting section 222; the third adhesive film 5 is arranged close to the first welding strip section 21, and a second adhesive point 7 is arranged between the third adhesive film 5 and the second adhesive film 4.
In this embodiment, the first glue sites 6 and the second glue sites 7 are UV glue sites or thermosetting glue sites.
According to the solar cell assembly of the embodiment, the solder strip 2 is formed into a stable straightening structure by arranging at least two first glue points 6 and at least two second glue points 7 on the solder strip 2, so that the solder strip 2 is prevented from being separated from the surface of the cell 1 without the main grid due to the hot spot effect in the later use process. In addition, when the individual non-main grid battery piece 1 is damaged and the whole battery string is scrapped, the third adhesive film 5 on the non-main grid battery piece 1 can be torn off and the corresponding limiting section 222 is cut off, and then the damaged non-main grid battery piece 1 is replaced by the normal non-main grid battery piece 1, so that the whole battery string can be normally put into use, and the battery string is facilitated to be repaired.
Example IV
As shown in fig. 10 and 11, a battery string includes at least one solar cell module of the third embodiment described above. Wherein, the structure of each solar cell assembly refers to the third embodiment; the two solar cell assemblies are positioned at the head end and the tail end of the cell string, and the extended welding strip parts are respectively used as two electrode leading-out ends of the cell string.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. The solar cell assembly is characterized by comprising a welding band group and two non-main grid cells (1) which are arranged side by side, wherein a welding band (2) in the welding band group comprises a first welding band section (21) positioned on the front surface of one non-main grid cell (1) and a second welding band section (22) extending to the back surface of the other non-main grid cell (1);
the first welding strip section (21) is fixedly connected with the corresponding battery piece (1) without the main grid through a first adhesive film (3) extending along the length direction of the first welding strip section;
The second welding strip section (22) is divided into a non-limiting section (221) and a limiting section (222), and the non-limiting section (221) is fixedly connected with the corresponding non-main grid battery piece (1) through a second adhesive film (4) extending along the length direction of the non-limiting section; the limiting section (222) is fixedly connected with the corresponding battery piece (1) without the main grid through a third adhesive film (5) extending along the length direction of the limiting section.
2. Solar cell assembly according to claim 1, characterized in that the two ends of the first adhesive film (3) in the length direction are aligned with the two sides of the corresponding grid-less cell (1), respectively.
3. Solar cell module according to claim 1, characterized in that the gap between the third adhesive film (5) and the second adhesive film (4) is 0 or the third adhesive film (5) covers the end of the second adhesive film (4).
4. Solar cell module according to claim 1, characterized in that the first adhesive film (3) and/or the second adhesive film (4) are one-piece adhesive films or comprise a plurality of adhesive strips arranged at intervals, one adhesive strip covering at least one of the first solder strip sections (21) or at least one of the non-limiting sections (221).
5. Solar cell assembly according to claim 1, characterized in that the first solder strip sections (21) are bonded to the respective non-primary grid cell (1) by at least two first glue sites (6); wherein two first glue points (6) are respectively arranged close to two ends of the first welding strip section (21).
6. Solar cell module according to claim 5, characterized in that the first adhesive film (3) is provided with at least two first adhesive point avoidance bits.
7. Solar cell assembly according to claim 5, characterized in that the first glue sites (6) are UV glue sites or heat-curable glue sites.
8. Solar cell assembly according to claim 1, characterized in that the second solder strip sections (22) are bonded to the respective non-primary grid cell (1) by at least two second glue sites (7); one end of the non-limiting section (221) far away from the limiting section (222) is provided with the second glue point (7); the third adhesive film (5) is arranged close to the first welding strip section (21), and a second adhesive point (7) is arranged between the third adhesive film (5) and the second adhesive film (4).
9. Solar cell module according to claim 8, characterized in that the second adhesive film (4) is provided with at least one second adhesive point relief; and a gap is reserved between the third adhesive film (5) and the second adhesive film (4) so as to expose the corresponding dispensing position of the second adhesive point (7).
10. A battery string comprising at least one solar cell module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421165240.2U CN221226242U (en) | 2024-05-27 | 2024-05-27 | Solar cell assembly and cell string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421165240.2U CN221226242U (en) | 2024-05-27 | 2024-05-27 | Solar cell assembly and cell string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221226242U true CN221226242U (en) | 2024-06-25 |
Family
ID=91575628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421165240.2U Active CN221226242U (en) | 2024-05-27 | 2024-05-27 | Solar cell assembly and cell string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221226242U (en) |
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2024
- 2024-05-27 CN CN202421165240.2U patent/CN221226242U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |