Light flexible assembly of back contact battery stitch welding structure

• Main Authors: ZUO YAN, LU BO, WANG QI, ZHAO SIKUO, LI YUANYUAN, GUAN WEIWEI
• Format: Patent
• Language: Chinese; English
• Published: 07.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The utility model discloses a light flexible assembly of a back contact battery stitch welding structure, which comprises a transparent front plate, a first packaging adhesive film and a back contact battery string, the back contact battery string comprises a plurality of small battery pieces, and the small battery pieces are divided into first battery pieces with positive electrodes on the back surfaces and second battery pieces with negative electrodes on the back surfaces. The first battery pieces and the second battery pieces are alternately arranged in the length direction of the back contact battery string, and every two adjacent small battery pieces in the length direction of the back contact battery string are at least partially overlapped together; along the length direction of the back contact cell string, the positive electrodes and the negative electrodes of the small cells on the same straight line are welded by the welding strips on the back surfaces to be connected in series. According to the b