A topcon cell back plate and production process

Abstract

The application relates to the technical field of battery production, in particular to a TOPCon battery backboard and a production process, which comprises a battery backboard body, the battery backboard body is packaged at one side notch of a frame, a backing plate is fixed at the other side notch of the frame, a TOPCon battery is installed between the battery backboard body and the frame, the surface of the battery backboard body is fixed with a quick-mount frame, the surface of the quick-mount frame is movably connected with a clamping block, after the quick-mount frame is pushed into the frame, the clamping block is extruded by the frame, the clamping block clamps the quick-mount frame, and the battery backboard body, the quick-mount frame and the frame are quickly assembled; the beneficial effect is that the TOPCon battery backboard and the production process push the TOPCon battery into the frame, then the battery backboard body with the pre-installed quick-mount frame is changed at the notch of the frame, until the quick-mount frame is inserted into the frame, at this time, the clamping block is clamped between the TOPCon battery and the frame, the quick-mount frame, the frame and the battery backboard body are quickly assembled and fixed, and the problem of jolting caused by the loosening of the TOPCon battery in the frame is avoided.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, specifically to a TOPCon battery backsheet and its manufacturing process. Background Technology

[0002] Topcon cells are a type of solar cell based on the selective carrier principle. They passivate the contacts through a tunneling oxide layer, hence the name tunneling oxide passivation cells or i-TOPCon cells. They are cells independently developed by the State Key Laboratory of Photovoltaic Science and Technology of Trina Solar.

[0003] In the prior art, the topcon battery is equipped with a backplate to protect the topcon battery. Typically, the topcon battery is fixed behind the frame, and then the backplate is fixed to the frame.

[0004] However, the above assembly method is inefficient and lacks a direct connection structure between the back panel and the topcon battery. Once the topcon battery becomes loose in the frame, there will be a phenomenon of the topcon battery bouncing between the back panel and the frame. Summary of the Invention

[0005] The purpose of this invention is to provide a TOPCon battery backsheet and manufacturing process to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a TOPCon battery backplate, comprising a battery backplate body, the battery backplate body being encapsulated in a slot on one side of a frame, a pad being fixed in a slot on the other side of the frame, a TOPCon battery being installed between the battery backplate body and the frame, a quick-release frame being fixed to the surface of the battery backplate body, a clamping block being movably inserted into the surface of the quick-release frame, and after the quick-release frame is pushed into the frame, the clamping block is squeezed by the frame, and the clamping block clamps the quick-release frame, thereby realizing the rapid assembly of the battery backplate body, the quick-release frame and the frame.

[0007] Preferably, the surface of the pad is fixed with limiting corner pieces, which are in the form of "L"-shaped plates. There are four limiting corner pieces, which are arranged in a square. The TOPCon battery is inserted between the four limiting corner pieces.

[0008] Preferably, the inner ring surface of the quick-assembly frame is provided with an assembly groove, which is an "L" shaped groove. The assembly groove and the limiting corner piece correspond one-to-one. After the quick-assembly frame is inserted into the frame, the limiting corner piece is inserted into the assembly groove.

[0009] Preferably, an installation groove is provided at one side of the frame. The installation groove is annular, and a sealing ring is fixed on the surface of the installation groove. The sealing ring has an annular plate structure, and the inner ring size of the sealing ring is smaller than the inner ring size of the installation groove.

[0010] Preferably, the surface of the quick-assembly frame has openings, and there are two sets of openings. The two sets of openings are symmetrically distributed about the inner ring of the quick-assembly frame, and the clamping block is movably inserted into the openings.

[0011] Preferably, the clamping block has a reserved groove at one end extending into the inner ring of the quick-assembly frame, and an elastic rubber band is fixed to the surface of the reserved groove. The two ends of the elastic rubber band are respectively fixed to the top surface and the bottom surface of the opening.

[0012] Preferably, one end of the clamping block is fixed with a rubber clip, which has a cross-shaped plate structure. There are two rubber clips, which are symmetrically distributed about the reserved groove.

[0013] Preferably, the bottom surface of the other end of the clamping block is integrally formed with an inclined surface, and a rubber clamping strip is fixed to one end of the clamping block.

[0014] Preferably, after the quick-release frame is inserted into the frame, the rubber clip is held between the clamping block and the TOPCon battery, and the rubber clip is held between the clamping block and the quick-release frame.

[0015] A manufacturing process for a TOPCon battery backsheet, the manufacturing process comprising the following steps:

[0016] The quick-release frame is fixed to the surface of the battery backplate body. A through hole is pre-made on the surface of the quick-release frame. After inserting the clamping block into the through hole, the clamping block is pulled and limited in the through hole by the elastic rubber band. Rubber clips and rubber strips are fixed at both ends of the clamping block, and a bevel is made at the other end of the clamping block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The TOPCon battery backplate and manufacturing process proposed in this invention involves pushing the TOPCon battery into the frame, then moving the battery backplate body, which is pre-installed with a quick-release frame, to the slot in the frame until the quick-release frame is inserted into the frame. At this point, the clamping block holds the TOPCon battery and the frame, enabling the quick-release frame, the frame, and the battery backplate body to be quickly assembled and fixed, thus avoiding the TOPCon battery from becoming loose inside the frame and causing bumps. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the half-section structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the battery backplate body of the present invention;

[0022] Figure 4 This is a schematic diagram of the clamping block structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the limiting angle plate's limiting structure for the TOPCon battery according to the present invention.

[0024] In the diagram: 1. Battery backplate body; 2. Quick-release frame; 3. TOPCon battery; 4. Limiting corner piece; 5. Pad; 6. Assembly groove; 7. Frame; 8. Mounting groove; 9. Sealing ring; 10. Through hole; 11. Clamping block; 12. Angled surface; 13. Reserved groove; 14. Elastic rubber band; 15. Rubber clip; 16. Rubber clip strip. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] Please see Figures 1 to 2 This invention provides a technical solution: a TOPCon battery backplate, including a battery backplate body 1, which is encapsulated in a slot on one side of a frame 7. A pad 5 is fixed in a slot on the other side of the frame 7. A TOPCon battery 3 is installed between the battery backplate body 1 and the frame 7. A quick-release frame 2 is fixed to the surface of the battery backplate body 1. A clamping block 11 is movably inserted into the surface of the quick-release frame 2. After the quick-release frame 2 is pushed into the frame 7, the clamping block 11 is squeezed by the frame 7 and clamps the quick-release frame 2, realizing the rapid assembly of the battery backplate body 1, the quick-release frame 2, and the frame 7. After the TOPCon battery 3 is pushed into the frame 7, the battery backplate body 1 with the pre-installed quick-release frame 2 is moved to the slot of the frame 7 until the quick-release frame 2 is inserted into the frame 7. At this time, the clamping block 11 clamps between the TOPCon battery 3 and the frame 7, realizing the rapid assembly and fixation of the quick-release frame 2, the frame 7, and the battery backplate body 1, avoiding the problem of the TOPCon battery 3 becoming loose inside the frame 7 and causing bumps.

[0028] Example 2

[0029] See attached document Figure 3 and Figure 5Based on Embodiment 1, in order to enable the quick-install frame 2 to be inserted into the frame 7 and fitted onto the outside of the TOPCon battery 3, a limiting corner piece 4 is fixed on the surface of the pad 5. The limiting corner piece 4 has an "L" shaped plate structure, and there are four limiting corner pieces 4 arranged in a square. The TOPCon battery 3 is inserted between the four limiting corner pieces 4. The inner ring surface of the quick-install frame 2 is provided with an assembly groove 6, which is an "L" shaped groove. The assembly groove 6 and the limiting corner piece 4 correspond one-to-one. After the quick-install frame 2 is inserted into the frame 7, the limiting corner piece 4 is inserted into the assembly groove 6. An installation groove 8 is provided at the groove on one side of the frame 7. The installation groove 8 is an annular groove. A sealing ring 9 is fixed on the surface of the installation groove 8. The sealing ring 9 has an annular plate structure, and the inner ring opening size of the sealing ring 9 is smaller than the inner ring opening size of the installation groove 8.

[0030] Example 3

[0031] See attached document Figure 4 Based on Embodiment 2, in order to enable the quick-release frame 2 to be inserted into the frame 7 and then squeezed to hold the TOPCon battery 3 by the clamping block 11, the surface of the quick-release frame 2 is provided with a through-hole 10. There are two sets of through-holes 10, which are symmetrically distributed about the inner ring of the quick-release frame 2. The clamping block 11 is movably inserted into the through-hole 10. A reserved groove 13 is provided at one end of the clamping block 11 that extends into the inner ring of the quick-release frame 2. An elastic rubber band 14 is fixed to the surface of the reserved groove 13. The two ends of the elastic rubber band 14 are respectively fixed to the top surface of the through-hole 10 and the... On the bottom surface of the through-hole 10, one end of the clamping block 11 is fixed with a rubber clip 15. The rubber clip 15 has a cross-shaped plate structure. There are two rubber clips 15, which are symmetrically distributed about the reserved groove 13. The bottom surface of the other end of the clamping block 11 is integrally formed with a bevel 12. One end of the clamping block 11 is fixed with a rubber clip strip 16. After the quick-install frame 2 is inserted into the frame 7, the rubber clip 15 is clamped between the clamping block 11 and the TOPCon battery 3, and the rubber clip strip 16 is clamped between the clamping block 11 and the quick-install frame 2.

[0032] Example 4

[0033] A manufacturing process for a TOPCon battery backsheet, the manufacturing process comprising the following steps:

[0034] The quick-release frame 2 is fixed to the surface of the battery backplate body 1. A through hole 10 is pre-opened on the surface of the quick-release frame 2. After the clamping block 11 is inserted into the through hole 10, the clamping block 11 is pulled and limited in the through hole 10 by the elastic rubber band 14. Rubber clips 15 and rubber clip strips 16 are fixed at both ends of the clamping block 11, and a bevel 12 is opened at the other end of the clamping block 11.

[0035] In actual use, the TOPCon battery 3 is pushed into the frame 7. The TOPCon battery 3 is limited by the four limiting corner pieces 4. Then, the quick-release frame 2 is inserted into the frame 7. During this process, the other end of the clamping block 11 is squeezed, and the clamping block 11 stretches the elastic rubber band 14 to deform. After the quick-release frame 2 is inserted into the frame 7, the clamping block 11 is between the frame 7 and the TOPCon battery 3. The mounting groove 8 is clamped between the quick-release frame 2 and the frame 7 and deforms, which plays a role in preventing detachment and damping, preventing the quick-release frame 2 from falling off the frame 7. The clamping block 11 is tightly clamped between the frame 7 and the TOPCon battery 3, preventing the TOPCon battery 3 from bumping between the battery back plate body 1 and the frame 7. In this way, the battery back plate body 1, the TOPCon battery 3 and the frame 7 can be quickly assembled.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. 。

Claims

1. A TOPCon battery backplate, comprising a battery backplate body (1), the battery backplate body (1) being encapsulated in a slot on one side of a frame (7), a pad (5) being fixed in a slot on the other side of the frame (7), and a TOPCon battery (3) being installed between the battery backplate body (1) and the frame (7), characterized in that: The surface of the battery backplate body (1) is fixed with a quick-release frame (2), and a clamping block (11) is movably inserted into the surface of the quick-release frame (2). After the quick-release frame (2) is pushed into the frame (7), the clamping block (11) is squeezed by the frame (7) and the clamping block (11) clamps the quick-release frame (2), thereby realizing the quick assembly of the battery backplate body (1), the quick-release frame (2) and the frame (7). The surface of the quick-release frame (2) is provided with a through hole (10), and there are two sets of through holes (10). The two sets of through holes (10) are symmetrically distributed about the inner ring of the quick-release frame (2), and the clamping block (11) is movably inserted into the through hole (10).

2. The TOPCon battery backsheet according to claim 1, characterized in that: The surface of the pad (5) is fixed with a limiting angle piece (4). The limiting angle piece (4) has an "L" shaped plate structure. There are four limiting angle pieces (4), which are arranged in a square. The TOPCon battery (3) is inserted between the four limiting angle pieces (4).

3. The TOPCon battery backsheet according to claim 2, characterized in that: The quick-assembly frame (2) has an assembly groove (6) on its inner ring surface. The assembly groove (6) is an "L" shaped groove. The assembly groove (6) and the limiting corner piece (4) correspond one-to-one. After the quick-assembly frame (2) is inserted into the frame (7), the limiting corner piece (4) is inserted into the assembly groove (6).

4. A TOPCon battery backsheet according to claim 1, characterized in that: An installation groove (8) is provided at one side of the frame (7). The installation groove (8) is an annular groove. A sealing ring (9) is fixed on the surface of the installation groove (8). The sealing ring (9) is an annular plate structure. The inner ring size of the sealing ring (9) is smaller than the inner ring size of the installation groove (8).

5. A TOPCon battery backsheet according to claim 1, characterized in that: The clamping block (11) has a reserved groove (13) at one end extending into the inner ring of the quick-assembly frame (2). An elastic rubber band (14) is fixed on the surface of the reserved groove (13). The two ends of the elastic rubber band (14) are respectively fixed to the top surface of the opening (10) and the bottom surface of the opening (10).

6. A TOPCon battery backsheet according to claim 5, characterized in that: One end of the clamping block (11) is fixed with a rubber clip (15). The rubber clip (15) has a cross-shaped plate structure. There are two rubber clips (15), and the two rubber clips (15) are symmetrically distributed about the reserved groove (13).

7. A TOPCon battery backsheet according to claim 6, characterized in that: The other end of the clamping block (11) has an integrally formed inclined surface (12) on its bottom surface, and a rubber clamping strip (16) is fixed to one end of the clamping block (11).

8. A TOPCon battery backsheet according to claim 7, characterized in that: After the quick-release frame (2) is inserted into the frame (7), the rubber clip (15) is held between the clamping block (11) and the TOPCon battery (3), and the rubber clip (16) is held between the clamping block (11) and the quick-release frame (2).

9. A manufacturing process for a TOPCon battery backsheet as described in any one of claims 1-8, characterized in that: The production process includes the following steps: The quick-release frame (2) is fixed on the surface of the battery backplate body (1). A through hole (10) is pre-opened on the surface of the quick-release frame (2). After inserting the clamping block (11) into the through hole (10), the clamping block (11) is pulled and limited in the through hole (10) by the elastic rubber band (14). Rubber clips (15) and rubber clip strips (16) are fixed at both ends of the clamping block (11), and a bevel (12) is opened at the other end of the clamping block (11).

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