Solar cell assembly and method of manufacturing the same, photovoltaic module
By optimizing the arrangement of composite solder strips, adopting a copper-clad aluminum core structure, and combining laser micro-melting and dispensing processes, the warping and microcrack problems in the back contact solar cell welding process were solved, improving the stability of the solar cell assembly and reducing costs.
CN122340912APending Publication Date: 2026-07-03TONGWEI SOLAR ENERGY (CHENGDU) CO LID
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-12
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
Back-contact solar cells with electrodes on one side are prone to warping and microcracks during the welding process, especially when using composite welding strips, which significantly affects the welding yield.
Method used
The composite welding strip is used, and the aluminum core structure is covered by copper. The main body is welded and fixed to the busbar, and the edge section is fixed to the edge area of the battery body with adhesive. The height difference of the backlight surface is controlled to be less than 4mm, combined with laser micro-melting and dispensing treatment.
Benefits of technology
It effectively improves the warping and microcrack problems of back-contact solar cells, enhances the stability and reliability of solar cell assemblies, and reduces costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122340912A_ABST
Abstract
The application relates to the technical field of solar cells, in particular to a solar cell combination, a preparation method thereof and a photovoltaic module. The solar cell combination comprises a back contact solar cell with a cell main body and a busbar, the cell main body has a light-receiving surface and a back surface, and the busbar is arranged on the back surface; a composite ribbon takes aluminum as a core body and is coated with a copper layer on the outside. Along the length direction of the composite ribbon, the composite ribbon comprises a middle main body section and two side edge sections, the main body section is welded on the busbar, and the edge sections are fixed in the area between the outermost busbar on the back surface and the outer edge of the cell main body through an adhesive. The back surface is an arc surface which protrudes towards a specified direction, the specified direction is the direction in which the back surface points to the light-receiving surface, and the height difference AH between the lowest point and the highest point on the back surface is less than or equal to 4 mm. In the solar cell combination, the warping and hidden cracking problems of the back contact solar cell caused by the shrinkage of the composite ribbon are improved.
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