Li-ion secondary battery and safety protecting device thereof

• Main Authors: LIU XIAOLEI, ZHENG YULIAN, WANG PENG, HU JUNZHONG, DENG PINGHUA
• Format: Patent
• Language: Chinese; English
• Published: 29.01.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model provides a Li-ion secondary battery and a safety protecting device thereof. The safety protecting device comprises side walls and a top wall, wherein the side walls are connected with a top cover of the Li-ion secondary battery; the top wall is connected with the side walls, and is positioned above an anti-explosion valve arranged on the top cover; air outlets are formed in the side walls, or air outlets are formed in the side walls in a surrounding manner. The Li-ion secondary battery comprises the top cover, the anti-explosion valve, a first pole, a second pole and the safety protecting device, wherein a liquid feeding hole is formed in the top cover; the anti-explosion valve is arranged on the top cover; the first pole is arranged on the top cover; the second pole is arranged on the top cover; the safety protecting device is the safety protecting device of the Li-ion secondary battery. Through the adoption of the scheme, spark can be collected, battery solution steam is guided, firing and