SECONDARY BATTERY

• Main Authors: LEI, Yuyong, WANG, Peng, XING, Chengyou
• Format: Patent
• Language: English; French; German
• Published: 26.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention provides a secondary battery, which includes a first electrode assembly, a second electrode assembly, a case, and a top cap assembly. The first electrode assembly and the second electrode assembly are housed in the case. The top cap assembly includes a top cap plate and a first electrode terminal, the top cap plate is connected to the case, and the first electrode terminal is arranged on the top cap plate. The first electrode assembly includes a first body and first tabs extending from the first body, and the first tabs are multiple and stacked. The second electrode assembly includes a second body and second tabs extending from the second body, and the second tabs are multiple and stacked. The second tabs are bent toward a direction approaching the first tabs and connected to the first tabs, and an end of each of the second tabs that is away from the second body is a second end portion. Each of the first tabs includes a first connecting portion extending beyond the second end portion, and the first connecting portion is connected to the first electrode terminal.