New national standards for lithium battery for vehicle use have been issued to promote the standardized development of new energy automobile industry

Ministry of industry, issued the electric car with lithium ion power battery safety requirements (draft) ", the standard of the national automobile standardization technical committee of electric vehicle technology committee organization "the electric car battery working group to carry out the set, based on GB/T31485-2015" electric car battery with dynamic safety requirements and test methods "and GB/T31467.3-2015" electric car with part 3: lithium ion power battery pack and system security requirements and test methods, monomer, the battery module, test method of battery pack or system system combing with safety requirements.

This standard is based on the experience summary of safety accidents of electric vehicles at home and abroad in recent years, and further understanding of safety failure and prevention mechanism of electric vehicles at home and abroad. It is applicable to lithium ion battery monomer, battery pack or system, nickel hydrogen battery monomer, battery pack or system mounted on electric vehicles.

The test methods and requirements in GB/T31485 and GB/T31467.3 are as follows: A discharge, short circuit, heating and degree cycle of battery monomer; Battery pack or system simulation collision, wet heat cycle, temperature shock, high altitude.

Having been canceled projects include: lithium ion battery module safety test; Battery single needling, single drop, low pressure, single seawater immersion; Battery pack or system drop, flip.

Modified items include: lithium ion battery monomer overcharge, extrusion; Lithium ion battery pack or system vibration, electronic device vibration, mechanical impact, extrusion, immersion safety, thermal stability part I, salt spray; Battery system a temperature protection, external short circuit protection, overcharge protection, a discharge protection.

New items include: lithium ion battery pack or system thermal stability part ii; A current protection of lithium ion battery system.

During the formulation of the standard, a special research group on vibration and thermal diffusion was set up.

Among them, the special group in the process of establishing standards, vibration with SAIC, Beijing, Guangzhou, CHERY, beans, ZHONGTONG, JIANGHUAI, rich and so on more than a dozen automobile enterprise and NINGDE era, the porch, LISHEN, CORUN battery manufacturers to in-depth study of technical proposal, technical parameters, and at the same time with Japan JARI, Germany VDA standardization organization for technical communication.

The special working group on heat diffusion is led by China automotive technology research center and participated by a number of testing institutions and enterprises.

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