How about the fire safety of new energy vehicles? Under the background of the rapid development of new energy, the spontaneous combustion of electric vehicles has attracted people's attention. Most importantly, the spontaneous combustion events we have heard recently are all spontaneous combustion of head enterprises. For consumers, if companies like Tesla and Weilai are on fire, the technological maturity of electric vehicles will really be questioned. Let's talk about some reasons why electric cars catch fire. In general, the spontaneous combustion of electric vehicles is caused by external factors, such as short circuit caused by collision, unqualified repair or irregular charging. On the other hand, the excessive pursuit of energy density by batteries leads to the increase of fire risk. After all, all new energy car companies are selling cruising range now, which further increases the risk of fire. However, there is no need to worry too much. Car companies must take this into account when designing models. Therefore, the fire prevention of new energy vehicles generally adopts the following methods: 1. For the battery, the thermal stability of the electrode is improved by wrapping the anode and cathode materials. Some fireproof additives can also be added to the electrolyte, and solid electrolyte can also be used. 2. In terms of battery protection, liquid cooling pipes are installed between batteries to balance the temperature difference between batteries and reduce the high temperature risk of batteries. 3. In terms of flame retardant, flame retardant materials can be installed on the upper and lower parts of the battery pack to avoid the risk of arcing caused by short circuit of the battery. We introduce the above three points from three aspects. We are not sure that all brands have done it now. For example, Tesla has done 2 or 3, and Nissan Leaf has done the first point. Whether they are comprehensive or not, we have reason to believe that electric vehicle companies are all designed, but we still hope that enterprises will not pay too much attention to cruising range and produce more reliable works. After all, the current word of mouth is quite good for new energy. With the rapid development of new energy vehicles, there are also many problems, such as vehicle spontaneous combustion. Recently, Tesla and Weilai cars have frequently spontaneously ignited, which has brought great troubles to consumers. How can vehicles avoid this spontaneous combustion? What is the fire protection performance of pure electric vehicles? From its working principle and internal structure, it can be seen that its fire protection performance is good or bad. The first is the constant temperature system of the battery, especially when charging in summer. Because the temperature itself is relatively high and the charging is overheated, it is very likely that there will be a short circuit inside the battery, which will lead to spontaneous combustion. This is only a natural phenomenon when charging. Moreover, for pure electric vehicles, most of their batteries are on the chassis, and it is quite common to scrape the batteries on bumpy roads and there will be liquid leakage and short circuit. Another is that the vehicle's electronic control system is not well done, and the vehicle's wiring is prone to short circuit, which may also lead to spontaneous combustion. We can also make a simple choice for the spontaneous combustion of electric vehicles. First, choose a pure electric vehicle with a relatively large brand, so that the quality is still guaranteed. For small brands, it is recommended not to choose now. Excellent technology will make consumers feel at ease in the process of using the car. Of course, in addition to the choice, in hot summer, especially when exposed to the sun, try not to charge. In this case, the internal heat dissipation of the battery will not be timely, which will lead to spontaneous combustion. If you have the conditions, you can install your own charging pile or your own garage, which will be much better. If there is no charging pile or garage, try to charge it at night. In addition to the problems mentioned above, if the vehicle is scratched or underframe supported during driving, you should go to the 4s shop or repair shop for a comprehensive inspection as soon as possible. If there is liquid leakage, we should take time to repair it, and we should not increase the loss because of a little leakage. In fact, for the fire prevention of pure electric vehicles, the most important thing is the fire prevention of power batteries. Even if the fire protection performance and level are high, it will cause spontaneous combustion if it is used improperly. Only by using cars correctly can the performance of electric vehicles be maximized. Two spontaneous combustion incidents of new energy in April this year have pushed new energy vehicles to the forefront. So, is it really that the technology of new energy vehicles is not up to standard? In fact, there have been many cases of spontaneous combustion of traditional internal combustion engines, so why do people pay more attention to the spontaneous combustion of new energy vehicles? Because people see the traditional internal combustion engine, they naturally think that there is nothing wrong with their vehicles, but the vehicles are not overhauled for a long time, and the lines are aging, which leads to spontaneous combustion. However, people have great prejudice against new energy vehicles, and think that as long as new energy vehicles are natural, they belong to the vehicle itself, not other factors. Two consecutive incidents of spontaneous combustion of new energy are frightening, and people always feel that new energy vehicles are not so safe to use, which also leads many people to have doubts about buying new energy vehicles. In fact, the spontaneous combustion of pure electric vehicles is only a probability event, and the fire rate of electric vehicles is not higher than that of fuel vehicles. Moreover, gasoline used in traditional internal combustion engines is the most unsafe, but everyone is used to it. According to the statistics of the fire department, due to the aging of the oil circuit of traditional fuel vehicles, short circuit and high temperature, collision of combustible vehicles and other reasons. Every year in the hot summer, there is an average car fire every two days in the country, even on highways or urban roads. In the final analysis, whether it is a traditional diesel locomotive, a new energy vehicle or other vehicles, spontaneous combustion will occur, which is only a small probability problem. In our daily car, we still need to check and maintain it frequently to avoid the danger of spontaneous combustion in the future. If in the process of using new energy vehicles, we find that the battery usage and mileage have dropped significantly, then we need to check whether there is the possibility of battery failure. If it needs to be repaired or replaced in time, another point is that in our hot summer, when using the car, please don't put flammable and explosive articles in the car, such as high-pressure gel water or lighters, perfumes and so on. These articles are prone to spontaneous combustion after burning at high temperature in hot summer. @20 19