How to improve the safety and stability of the battery?

A few days ago, a new battery preparation technology called square flexible packaging 5Ah lithium vanadium phosphate/graphite lithium battery has passed the scientific and technological achievements evaluation and product appraisal organized by China Hi-Tech (Technology Industrialization Research Association and China Machinery Industry Federation. The skills are jointly completed by Tianjin University, Harbin Yuanfang New Energy Car Power Lithium-ion Battery Co., Ltd. and Heilongjiang Yuanfang New Energy Technology Development Co., Ltd. Nowadays, the most widely used positive electrode materials in the battery market are lithium cobalt oxide, lithium manganate, and three Metadata and lithium iron phosphate, etc. These batteries have their own characteristics, but one common defect is that there are hidden dangers in safety, and the phenomenon of blasting or burning of electric car batteries occurs from time to time, and lithium batteries must be obtained in the field of electric cars. Widely used, safety is the first problem that must be solved. Not long ago, this lithium vanadium phosphate battery passed the acupuncture safety test of the Chemical and Physical Power Product Quality Supervision and Inspection Center of the Ministry of Industry and Information Technology. The battery was not blasted or burned during the acupuncture process. After the acupuncture experiment, the battery remained intact and showed excellent safety. Professor Tang Zhiyuan of Tianjin University said that compared with conventional batteries, lithium batteries using lithium vanadium phosphate as the positive electrode have high capacity, good safety, and service life. Long and excellent low-temperature function. Tang Zhiyuan analyzed that the acupuncture experiment uses a large steel needle to directly penetrate the battery when the battery is working, causing an instant short-circuit. It mimics the sudden closing of a new energy car under extreme conditions. When the battery is severely damaged by a severe impact, it is the most extreme battery damage condition. Under this condition, many batteries currently in use will burn or explode due to the rapid heat energy, but lithium vanadium phosphate The battery only vaporizes and emits fine white smoke after the electrolyte is heated, and there is no safety problem. In terms of capacity, compared with commonly used car batteries, the capacity of lithium vanadium phosphate batteries per unit weight is about 26% higher. It is hoped to increase to about 40% to 60%. The expert committee believes that the technical achievements have significantly improved the thermal stability, safety and cycle life of the battery, especially the outstanding progress has been made in improving the low-temperature discharge function of the battery. Domestic and international advanced level. Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: What are the common adverse reactions of lithium battery protection boards?