Secondary battery

• Main Authors: YU XIANFENG, YANG WEI, CAI RULAI, LI XIANG
• Format: Patent
• Language: Chinese; English
• Published: 22.02.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a secondary battery. The secondary battery comprises a battery electrode assembly, a first terminal, a second terminal, a top cover piece and a contact piece, wherein the battery electrode assembly comprises a first electrode piece, a second electrode piece and a baffle plate arranged between the first electrode piece and the second electrode piece; the first terminal is electrically connected with the first electrode piece; the second terminal is electrically connected with the second electrode piece; the contact piece is attached to the first terminal; the top cover piece is in isolation arrangement with the first terminal and is electrically connected with the second terminal. When internal pressure of the secondary battery exceeds reference pressure, the contact piece moves under the action of the internal pressure and is in contact with the top cover piece, so that an electrical connection path is formed through the first electrode piece, the first terminal, the contact piece, th