Battery sheet, manufacturing method and manufacturing device thereof, and photovoltaic module
By setting pits on the sidewall of the substrate to accommodate the second doped part and form a leakage channel, the problems of hot spot effect and photoelectric conversion efficiency of back contact cells are solved, and the reliability and performance of the cells are improved.
CN122340952APending Publication Date: 2026-07-03JINKO SOLAR (HAINING) CO LTS
View PDF 0 Cites 0 Cited by
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JINKO SOLAR (HAINING) CO LTS
- Filing Date
- 2026-06-02
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
Back-contact batteries are prone to hot spot effects when they are shaded, which affects battery performance and threatens the safety of photovoltaic modules. Furthermore, leakage channels on the battery surface can affect photoelectric conversion efficiency.
Method used
A pit is set on the sidewall of the substrate to accommodate the second doped part, forming a leakage channel. This avoids setting a leakage channel on the surface of the battery, thereby reducing carrier recombination and improving the hot spot effect.
Benefits of technology
It effectively improves the hot spot effect of back-contact batteries, reduces carrier recombination, and improves photoelectric conversion efficiency and battery cell reliability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122340952A_ABST
Abstract
This disclosure relates to the photovoltaic field, providing a solar cell and its manufacturing method, manufacturing equipment, and photovoltaic module. The solar cell includes: a substrate having opposing first and second surfaces, and a sidewall located between the first and second surfaces; the first surface having alternating first and second regions; a first doped portion located at least in the first region and on the sidewall, with the first doped portion on the sidewall having a pit; a second doped portion located in the second region and at least part of the pit, the doping type of the second doped portion being different from that of the first doped portion; a first electrode electrically connected to the first doped portion; and a second electrode electrically connected to the second doped portion, which can improve the reliability of the solar cell.
Need to check novelty before this filing date? Find Prior Art