Solar cell
By designing the harpoon part and overlapping interval in the main gate and fine gate structure of the solar cell, the problems of dummy welding and hidden cracking during the welding process are solved, and higher welding quality and detection efficiency are achieved.
CN222655669UActive Publication Date: 2025-03-21JINKO SOLAR (SHANGRAO) CO LTD +1
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Patent Information
- Application Number
- CN202420321688.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-02-21
AI Technical Summary
Technical Problem
Existing solar cell cells are prone to false welding and hidden cracking during welding.
Method used
A solar cell is designed, with the main gate and fine gate structure including a harpoon portion, a closed end and an open end. The harpoon portion overlaps the closed end of the harpoon portion and forms overlapping intervals at the harpoon position to improve welding quality.
Benefits of technology
Through the improved structural design, the proportion of welding dummy and hidden cracks has been reduced, 0.3% and 0.22% respectively, improving the welding quality and detection efficiency of solar cells.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a solar cell, which comprises a main grid and a fine grid, and is characterized in that two ends of a first section of the main grid are provided with harpoon parts for collecting current at the edge of the solar cell; the fine grids comprise first fine grids, and the first fine grids are overlapped with the closed end of the harpoon part in the first direction, so that current collection is facilitated; in the second direction, a first interval is formed between adjacent sub-segments of the first fine grid, and the first interval is overlapped with the closed end, so that the phenomenon that when the welding strip is welded, the welding strip and the first fine grid form alloy at the position close to the first welding point, and a bulge appears on the solar cell can be avoided, and the risk of hidden cracks is reduced; according to the solar cell piece, the cold solder joint phenomenon caused by the fact that the height of a fish fork part is inconsistent with the height of a main grid after the fish fork part is in lap joint with the fine grid in the welding process and the poor fitting performance of the welding strip and a welding spot is avoided; the cold solder joint proportion of the solar cell piece is reduced by about 0.3% compared with that of a solar cell piece in the prior art; and the subfissure ratio is reduced by about 0.22% compared with that of the solar cell in the prior art.
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