In fact, through relatively extensive market research, and according to the "2019 China New Energy Vehicle Consumption Trend Survey Report", it can be seen that in the field of electric vehicles, the most focused consumers are mainly "vehicle power battery safety" and "Battery life reduction" two aspects, and these two aspects are closely related to battery technology.

　　By searching domestic and foreign media reports, it is not difficult to find that since 2019, electric vehicle spontaneous ignition accidents have occurred frequently. Electric vehicle safety accidents related to power batteries alone have exceeded 40. Among the causes of fire accidents, power battery spontaneous combustion accounts for The ratio is 31%.

　　To identify a pure electric vehicle with a safe and reliable battery life, one must consider not only from the data point of view, but from the technical level. The core point is the many technical features related to the battery.

　　In terms of battery quality, first of all, there must be an excellent battery physical protection design. In the structural design of the battery, the safest battery cell arrangement method recognized in the industry is to arrange the high-voltage circuit in the center of the battery pack, and at the same time enclose the cells inside the battery pack with a cooling pipe. This structure can wrap the battery cell and high-voltage circuit like a "buffer airbag" in express delivery, and play a buffer protection role in potential impact. At the same time, in the structural design of the battery exterior, the front and bottom of the battery need to be reinforced and fixed with steel beams, like a "bullet armor", which can not only prevent foreign objects on the road from penetrating the battery pack, but also strengthen the collision The battery protection performance.

　　In addition, the waterproof, dustproof, and rust-proof performance of vehicle battery packs are also very important. In the industry, the ideal design of vehicle battery packs is a completely airtight structure. At the same time, the bottom of the battery pack is covered with anti-rust coating to achieve "multiple physical protection" as much as possible.

　　In addition to physical protection, the "soft protection" of the battery is also indispensable. At present, most electric vehicle power battery packs are equipped with safety monitoring systems, but some monitoring systems can only monitor the overall voltage of the vehicle’s battery. For the most important battery cells, there is a lack of effective monitoring.