New energy vehicles frequently spontaneously ignite, who is behind the scenes

This summer's most "fire" is no more than new energy vehicles. I believe that everyone has seen a lot of reports. Many new energy vehicles are spontaneously ignited. Why is it causing spontaneous combustion? The answer is very clear, quality, quality, quality, important things to say three times, as a "fresh species" of new energy vehicles, many manufacturers blindly pursue high cruising range to please consumers, but just ignore the most important Product quality issues have led to unprecedented suspicion and "fear" about this "fresh species."

With the gradual change of the automobile market, new energy vehicles have gradually replaced traditional fuel vehicles, which is also the trend of the times. In recent years, the development of domestic new energy vehicles is also very fast, especially for pure electric vehicles, which account for 50% of the global total %the above. In January and August of 2018, the production and sales of domestically produced new energy vehicles were 607,000 and 601,000 respectively, an increase of 75.4% and 88% over the same period last year. Among them, the production and sales of pure electric vehicles were 455,000 and 447,000 respectively, an increase of 60.2% and 71.6% respectively over the same period of the previous year. From this data, we can see that the rapid growth of new energy vehicles has surpassed that of traditional fuel vehicles. The most important mileage for everyone is more than 300 kilometers, and some even break through 400-500 kilometers.

Everyone should know that the state's subsidy policy for new energy vehicles is very good, so many car companies are vying to join the ranks of new energy car production, but with the emergence of many new energy car brands, the country has also improved. The threshold for new energy subsidies is that the energy density of the power battery is high enough. After the threshold is raised, many cars that are pursuing the cruising range have gradually emerged. According to incomplete statistics, in 2018, the number of burning accidents caused by electric vehicles in China was more than ten. It is also worth noting that most accidents occur in hot summers with high temperatures and rains.

Claiming to be the birth of new energy vehicles, many people don't like it at first, but the most direct reason is the cruising range. New energy vehicles are basically the same as fuel vehicles. The difference lies in the power system. One is electric drive, the other is fuel-driven, and why electric cars spontaneously ignite at such high frequencies because they come with flammable items, that is, battery packs.

The rapid development of new energy vehicles, the biggest hero is the increase in cruising range, let people directly accept it, the national threshold for new energy subsidies, that is, the increase in battery energy density, which brings a very good cruising range At the same time, it also brings greater hidden dangers to the safety of new energy vehicles. The industry consensus is that the higher the battery capacity density, the greater the chance of spontaneous combustion. The ternary lithium battery is the most popular battery nowadays. Among them, nickel, cobalt and manganese are all flammable. The higher the content, the more likely it is to spontaneously ignite. Even Tesla can't escape, according to foreign media reports, this year. During the March-June period, only three vehicle fires occurred in the ModelS model. Among Tesla's high energy density ternary lithium batteries, the proportion of nickel is greater than 80%.

In addition to the battery pack itself, there are a large number of external causes, such as the most common rainstorm this summer. After a long period of rainwater immersion, a pure electric car is very prone to short circuit, which causes spontaneous combustion. The waterproof level of the car is also required, that is, IP67. The straightforward point is that the vehicle can be soaked in water for 30 minutes. Many vehicles spontaneously ignite after immersion in rainwater, in part because manufacturers do not meet IP protection levels.

The biggest problem with charging cars is the charging problem. Because it is still a “fresh species”, many places do not have very perfect charging equipment. Many car owners rarely charge in professional factory charging piles, but instead charge in their own garage. Many manufacturers give the car owners the rush to complete the charging pile, the quality is not up to standard, and the daily maintenance of the owner is not in place, which makes the pure electric car very easy to spontaneous combustion when charging. Therefore, our consumers must strictly follow the manufacturer's requirements for charging.

At the end of the day, electric car combustion accidents can be roughly divided into three categories: 1. Parking status and high temperature, heavy rain and other environments. 2. State of charge. 3. Driving status. Nowadays, the development prospects of new energy vehicles are very impressive, but they cannot blindly pursue sales, pursue mileage and neglect product quality, so that the immediate interests are not long-term. What do you think about today's new energy vehicles?

The page contains the contents of the machine translation.