After explaining the current new energy vehicle safety and power battery industry background, how to improve the safety of new energy vehicles, especially the battery system, has become the focus of the next step of the industry chain, including the voice of launching the mandatory annual inspection system for electric vehicles.

Ouyang Minggao, an academician of the CAS Member and professor of Tsinghua University, once pointed out that at present, the annual inspection system of electric vehicles in China needs to be established urgently. He believed that the lack of the annual inspection system of EMUs led to the unfavorable prevention and control of many potential safety hazards of electric vehicles. It is a big problem that there is no annual inspection system for electric vehicles. For example, if the charging relay is stuck, the sealing fails, or the power battery exceeds the warranty period, the battery is at risk of expansion and cracking. If consumers continue to use the electric vehicle without knowing it, it will bring many hidden dangers to the use safety of electric vehicles.

As there is no mandatory inspection for new energy vehicles, many inspection indicators and methods refer to the standards for traditional fuel vehicles, and it is difficult to find some problems and hidden dangers for new energy vehicles. As early as 2015, some experts in the industry called on China to establish a mandatory annual inspection system and an inspection platform for new energy vehicles.

Theoretically, the tests at the R&D stage of power battery should include insulation, voltage, acupuncture, waterproof, dustproof and other tests. But for example, the acupuncture test is obviously not suitable for the annual inspection items. Different from traditional fuel vehicles, the power battery test is difficult in terms of inspection items, which is the main reason why the industry still has no consensus on the specific content of the annual inspection system.

In addition, whether the mandatory annual inspection will increase the cost of consumers' vehicles, whether it involves testing expenses, and how to calculate the expenses are all issues that need to be considered. Improper handling will form certain misunderstanding and resistance at the user level.