In recent years, the new energy vehicle industry has exploded, and China has become the world's largest new energy vehicle market.

According to data released by the China Association of Automobile Manufacturers a few days ago, the production and sales of automobiles were 20.587 million and 20.97 million respectively from January to October, an increase of 5.4 per cent and 6.4 per cent over the same period last year. Among them, the performance of new energy vehicles is particularly eye-catching, with production and sales hitting a record high in October.

With the rise of oil prices, the low comprehensive cost of new energy vehicles is attractive. Many car owners have the idea or action of replacing existing fuel vehicles with new energy vehicles.

In many cities where cars are restricted, residents are becoming more and more receptive to new energy vehicles, and many people choose to drive new energy vehicles to and from get off work. According to the China Electric Vehicle Charging Infrastructure Promotion Alliance, the current number of domestic charging infrastructure is 2.223 million units, with a pile ratio of about 3.05:1.

The continuous favorable policies and the further improvement of infrastructure are the reasons for the rising sales of new energy vehicles. Recently, Honda announced that it will stop putting fuel vehicles into the country in 2030 and comprehensively promote pure electric and hybrid models. Volkswagen, Volvo and other car companies have also announced the timetable for stopping the sale of fuel cars. In addition, Bentley, Bentley, Maserati, Toyota, Ford, Changan and many other brands have issued plans to stop selling fuel vehicles, which are expected to be gradually replaced by electric vehicles from 2022 to 2025.

The driving form of new energy is different from that of sensor fuel vehicles, so the safety hazard is greater than that of fuel vehicles, andBattery and electronic control system are the core components of new energy vehiclesTherefore, car companies and users are particularly concerned about the safety of new energy vehicles.

For the safety of the battery pack, various car companies are also doing their best in terms of technology.

For example:

Weilai proposed a "three horizontal and three vertical" safety architecture, combining "cells, modules and battery packs" with "prevention, control and remediation" in hard-shell cells;

BYD's blade battery, lithium iron phosphate properties, "blade"-shaped cells directly arranged into a package, improve the structural strength, better thermal stability, higher safety;

GAC's magazine battery, mesh nano-hole insulation material and high temperature shell design, so that each cell has a separate safety compartment, improve the overall safety of the battery;

Great Wall's Dayu battery eliminates heat concentration in heat conduction, directional explosion, automatic fire extinguishing and flame retardant, and improves battery safety.

Not only that, in view of the safety of power batteries, the Ministry of Industry and Information Technology of the people's Republic of China also stressed in the guidance on further strengthening the Construction of Safety system of New Energy vehicles (draft for soliciting opinions) that enterprises should actively carry out design collaboration with power battery suppliers, continuously optimize the safety matching between the whole vehicle and the power battery and the thermal management strategy, and clarify the safety boundary of the use of power battery, improve the safety protection ability of the power battery under the conditions of collision, vibration, extrusion, abnormal charge and discharge, etc. research applicationThermal runaway real-time monitoring and early warning deviceand early suppression and fire-fighting measures.

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