To solve the safety problems of lithium-ion batteries, we need to draw on relevant foreign experience.

In recent years, the frequent occurrence of electric vehicle fires caused by battery safety problems has become an undeniable fact, making the large number of consumers who have doubts about electric vehicles more resistant. The cause is that overcharging, overheating, electrical triggering, collision and other factors can lead to thermal runaway of the power battery. The cause of thermal runaway is related to the improper selection and thermal design of the battery, or the external short circuit causes the temperature of the battery to rise, or the connector of the cable to loosen. It can be solved from two aspects of battery design and management, such as the development of materials to prevent thermal runaway reaction, etc. For battery management, different temperature ranges can be predicted to define safety levels.

In addition, different batteries have very different levels of safety. For example, in the event of a collision, the safety of lithium iron phosphate is higher than that of ternary lithium electronic batteries, but so far we still insist on using Lithium Iron Phosphate Batteries in buses, and it is not suitable for large-scale use of ternary lithium electronic batteries, especially 12-metre buses.

If domestic battery companies want to make a breakthrough in safety issues, they should also study the safety design of Tesla batteries. Objectively speaking, Tesla's batteries are not safe, at least not individually. However, the unsafe individual battery can achieve system safety because Tesla uses more than 7,000 18650 ternary nickel-cobalt Lithium Batteries, and the combination of unsafe batteries is safe. It also became a patent for Tesla's safety design.