Safety top cover for secondary battery

• Main Authors: ZHENG YULIAN, WANG PENG, YANG WEI, JIANG JUNJIE, CAI RULAI, DENG PINGHUA
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a safety top cover for a secondary battery. The safety top cover comprises a top cover plate, a first polar column, a second polar column, a turnover valve and a short circuit conducting piece, wherein the first polar column, is mounted at the top cover plate and is insulated from the top cover plate, and the second polar column is mounted at the top cover plate and is electrically connected with the top cover plate; the short circuit conducting piece is electrically connected with the first polar column and is insulated from the top cover plate, the turnover valve is electrically connected with the top cover plate and is mutually insulated from the short circuit conducting piece through a gap between the turnover valve and the short circuit conducting piece; the turnover valve comprises a turnover piece and a protruded bag, the turnover piece is forced to turn over towards the short circuit conducting piece, and the protruded bag is arranged at the turnover piece; the short circuit co