There are four kinds of power batteries commonly used for electric vehicles in life: valve regulated lead-acid maintenance free battery, colloidal lead-acid battery, nickel hydrogen battery and lithium-ion battery.

Since 2015, China has become the country with the largest sales volume of electric vehicles in the world, and people's concern about the safety of electric vehicles has also increased. In addition, during the charging process of electric vehicles in recent years, the news of short circuit and fire has also been reported. Some people even worry about battery radiation, which annoys enterprises and puzzles consumers.

American Certification: UL certification, ETL certification, tuvus certification, CTIA certificationIs the electric car safe? Or rather, is the battery safe? Compared with the fuel tank and oil sample of gasoline vehicle, its safety also needs to be strictly tested and inspected.

For a long time, China has been actively formulating mandatory international standards for the safety requirements of lithium batteries. According to gb/31241-2014 safety requirements for lithium ion batteries and battery packs for portable electronic products, all lithium ion batteries and battery packs that meet the requirements of "no more than 18kg of mobile electronic products scheduled to be frequently carried by users" shall comply with the mandatory requirements given in the standard. Portable electronic products applicable to the standard include but are not limited to portable office products such as notebook computers and PDAs, mobile communication products such as mobile cordless phones, Bluetooth headsets and walkie talkies, portable audio and video products such as portable televisions, portable DVD players, MP3 players, cameras, camera recorders, and other portable products such as electronic navigators, digital photo frames, game consoles, e-books Mobile power supply, etc.

The newly issued national mandatory standard, in addition to comprehensively adopting the mature safety test items in a number of domestic and foreign battery standards (such as UL, UN. IEC, etc.), also modifies and improves the test items such as thermal abuse, external short circuit, drop and overcharge, and adds the requirements of protection circuit and identification durability, especially the corresponding safety requirements and specific test methods for the protection circuit of battery pack, It should be said that this is the most comprehensive safety standard for portable lithium-ion batteries at home and abroad.