Top cover structure of secondary battery

• Main Authors: HU YANLAN, ZOU WEIWEI, TAO QIONGCHENG, ZHANG LIHUA, HUANG XIAOWEI, WU JUNFANG, GE ZHIMIN, SUN WEN, HE QINGQING, YU WENQIANG, TANG XIAOWEI
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model provides a top cover structure of a secondary battery, which relates to the technical field of batteries, and comprises a top cover body, two ends of the top cover body are respectively provided with an electrode via hole; the two electrode assemblies are embedded into electrode via holes in the two ends of the top cover body respectively, a welding ring is arranged at the bottom of the ceramic sealing ring, a welding groove matched with the welding ring is formed in the top cover body, and the welding groove is formed in one side of the electrode via holes in the circumferential direction; the welding ring is welded to the top cover body in a matched mode through welding and the welding groove, and when the welding ring is welded to the top cover body, the ceramic sealing ring is embedded into the electrode via hole. The top cover is simple in structure, the number of assembly procedures between the electrode assembly and the top cover body is small, production cost is reduced, deformation