Back contact cell and photovoltaic module
The back-contact cell design with optimized busbar and connecting line configurations addresses the weak current collection issue, improving efficiency by reducing internal resistance and providing multiple transfer paths for charge carriers.
DE202026100537U1Undetermined Publication Date: 2026-07-02JINKO SOLAR CO LTD +1
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Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- JINKO SOLAR CO LTD
- Filing Date
- 2026-01-02
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Back-contact solar cells have a relatively weak current collection capability, which hinders the improvement of photoelectric conversion efficiency.
Method used
The back-contact cell design includes a plurality of busbars and connecting lines with specific widths and lengths to enhance charge carrier transfer efficiency, with edge busbars connected to intermediate busbars via second connecting lines, reducing internal resistance and providing multiple transfer paths.
Benefits of technology
Improves charge carrier transfer efficiency and reduces internal resistance, thereby enhancing the photoelectric conversion efficiency of back-contact cells.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
Back-contact cell comprising: a cell base; a plurality of busbars (120) on the cell base, arranged at intervals in a first direction (X) and extending in a second direction (Y) intersecting the first direction (X), the plurality of busbars (120) including two edge busbars (123) and a plurality of intermediate busbars (124) positioned between the two edge busbars (123); at least one edge pad (130) and a plurality of intermediate pads (125) on the cell base; at least one first connecting line (140) and a plurality of second connecting lines (150) on the cell base; wherein each edge pad of the at least one edge pad (130) is closest to one of the two edge busbars (123) and is electrically connected to it via each of the at least one first connecting line (140);the plurality of intermediate pads (125) form a plurality of columns spaced apart in the first direction (X), and intermediate pads (125) in a respective column of the plurality of columns are electrically connected to a respective intermediate busbar of the plurality of intermediate busbars (124); and a respective edge busbar of the two edge busbars (123) is electrically connected via one or more second connecting lines of the plurality of second connecting lines (150) to at least one intermediate busbar of the plurality of intermediate busbars (124).
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