Secondary battery top cover convenient for injection molding

• Main Authors: ZOU WEIWEI, TAO QIONGCHENG, WANG JUN, HUANG XIAOWEI, ZHANG LIHUA, GE ZHIMIN, SUN WEN, NI DAWEI, HE QINGQING, YU WENQIANG, TANG XIAOWEI, LI TAO
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; ELECTRICITY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The utility model provides a secondary battery top cover convenient for injection molding, which relates to the technical field of lithium ion batteries and comprises a cover plate, and a groove is formed in the surface of the cover plate; the sealing ring is mounted in the groove; the pole column is mounted above the sealing ring and penetrates through the sealing ring; the welding ring is arranged in the groove and surrounds the pole, an injection molding cavity is formed between the outer wall of the pole and the inner wall of the welding ring, an avoiding groove is formed in the inner wall of the welding ring, upper plastic is arranged in the injection molding cavity through injection molding, the groove is of a sinking type, the sealing ring is arranged at the inner corner position of the groove, and the outer wall of the welding ring is close to the included angle position of the inner wall of the groove. And the multiple avoiding grooves are used as multiple injection openings and used for improving th