5.26 traffic accidents, results released

On May 26 of this year, a GTR sports car in Shenzhen crashed into a BYD E6 taxi, causing the taxi to roll over, crashed into a big tree and caught fire, and three people died in the car.

After the accident, the quality of BYD pure electric vehicles was widely questioned. Its share price fell from 24.38 yuan the day before the accident to 14.20 yuan on July 31, a drop of 41.8%. The company's orders have fallen sharply, and many contracts have been suspended. The company is facing severe challenges.

Electric vehicle safety issues

The 5.26 “traffic accident” attracted widespread attention after being reported by the media, because it was not an ordinary traffic accident and it was a major accident involving the death of an electric vehicle.

What people are more concerned about is that, as an electric vehicle pioneered by the country's new energy strategy, after the accident, can the relevant parties take a scientific approach to seeking truth from facts, carefully find out the reasons, actively eliminate hidden dangers, continuously improve the design, and gradually improve and ensure safety!

Because, electric car burning is not alone. In 2011, Hangzhou Zhongtai electric vehicle and Shanghai electric bus all had spontaneous combustion. The U.S. GM VOLT electric vehicle also caught fire after a crash test and was recalled after the accident. Only improvement was made and no “defects” were heard.

"Authentication report" is released

First, this is a rare serious traffic accident. The speed of the sports car is 242 kilometers per hour, which is equivalent to the speed of the takeoff of a large civil aircraft. Although the rear-end sports car has braking action, the speed is still as high as 183-195 kilometers per hour. The speed of the rear-ended taxi is every hour. 81-83 kilometers, the speed of the sports car is still 100 kilometers per hour faster than the taxi. Therefore, experts say that this is a rare traffic accident. The strong collision caused the battery pack of the BYD E6 taxi to be seriously deformed, and some of the batteries had a short circuit with the vehicle body. The powerful electric spark ignited interior materials and other combustible materials, causing a fire.

Second, the taxi continued to roll and collided with a big tree on the side of the road. The big tree cut into the body 1.05 meters. The three occupants died as a result of severe injuries to the head in two violent collisions. They were killed instead of being killed. Burned.

Third, of the 96 batteries in the battery pack, only 24 had burned, accounting for 1/4 of the total. Although the aluminum alloy housing and the battery plate of the burning battery had local combustion, the battery plates remained neat and tidy. Because it is clearly structured, it can be judged that no explosion has occurred.

Fourth, the conclusion of the appraisal report is that the installation layout, insulation protection and high-voltage power system design of the power battery system on the vehicle are reasonable, and “there is no design defect in the vehicle safety”.

The reason for questioning

New energy vehicles, whether electric or hybrid, have not yet had one company in the world and dare to claim that they have fully matured products.

In China, the development of electric vehicles is in its infancy. Not only do key technologies need to be tackled, but also from research and development, production, sales, operation, and after-sales service, an industrial chain has not yet been formed. The social supporting facilities are not perfect, and the entire marketization process is in the process of exploration. .

The e6 electric car that was involved in this incident was only tested in small batches and small-scale areas in Shenzhen. It is not a product that is already very mature and can be put on the market in large quantities.

Under such circumstances, the expert gave the perfect theory of "no defects". Where is the scientific basis of this conclusion? How can it help production companies improve and improve?

The power battery caused a large fire and burned people. He also said that "safety design is flawless" and that there are so many "no defects" circumstantial evidence.

Therefore, people have reason to question the expert's professionalism and authority, and it is reasonable to ask the science and objectivity of accident identification.

In fact, in response to the development of new energy vehicles, the relevant documents of the Ministry of Industry and Information Technology have long reflected such a scientific attitude and demonstrated prudence in seeking truth from facts. On June 25, 2009, the Ministry of Industry and Information Technology announced the revised "Regulations on the Management of New Energy Vehicle Production Enterprises and Product Access".

The "Regulations" will divide new energy vehicles into three different technical stages: starting phase, development phase, and maturity phase. Products of different periods are subject to varying degrees of restrictions. According to the "Regulations", lithium iron phosphate batteries have been designated as products for development. During the development period, the products are allowed to be mass-produced. However, they can only be sold and used in the approved areas, and the operational status of at least 20% of products can be monitored in real time.

According to the definition of the "Regulations," e6 electric vehicles belong to the "development period". The expert group's appraisal conclusions are so frivolous for the major accidents that have occurred during the development period. It is the media and the public's reasoning!

Our goal is to avoid tragedies by asking for tragedy. By asking the truth about public events and asking about the universal connection of public events, we can eliminate similar tragedies and prevent it from repeating itself.