AutoBeta(AutoBeta.net)07/26 Report--

On July 24, Byte Jump's automotive media platform "understanding car Emperor" released a video of a head-on collision between BYD EV and polar fox Alpha S. the media adopts the 50% offset collision standard of two-car 64km/h, and the test models are all the lowest matching models (2020 BYD EV ultra-long-range luxury version / 2021 polar fox Alpha S 525S). After the collision, neither of the two models caught fire, but 48 hours after the crash test, the BYD Han EV caught fire while standing still. According to Zhi Chedi, the fireman determined that the cause of the fire was caused by a faulty electrical circuit, and questioned the safety of BYD's blade battery.

At that time, BYD officially released a statement saying that the coolant of the media collision test vehicle (red, widely used in the industry, with electrical conductivity) was completely different from the coolant of Han EV production vehicles (purple, unique to BYD, non-conductive). After the collision vehicle was replaced with conductive coolant, the coolant leakage of the vehicle within several days after the severe collision, which caused the circuit short circuit and caused combustion. In addition, BYD officials also stressed that the testing standards and methods used in the video are non-mainstream, non-authoritative, and not national or industry standards. In other words, BYD believes that the car caught fire after the collision because the coolant was replaced.

So the test media didn't change the coolant? Was the fire caused by coolant in BYD Han EV? Admittedly, the focus of the incident has shifted to the coolant. Shortly after BYD's official statement was issued, several car owners said in the car circle that the color of their battery coolant was very close to the color of the battery coolant of the car tested by Yidi (red). Some car owners also said that their battery coolant was purple as mentioned in BYD's official statement. However, according to the pictures uploaded by several car owners, the purple coolant is not blue in purple as shown in the official description, but purple in red. Many netizens speculate that it may have something to do with the shooting angle or light, or it may also have something to do with the mileage of driving. Based on the above information, it is obviously not rigorous to prove that the coolant has been replaced in the test media and that the fire is caused by the coolant.

Later, BYD seems to have changed its story again. According to Tencent Automobile, BYD insiders said, "Han EV varies according to the color of different batches of coolant, but the color of the coolant is different, and the coolant is non-conductive and has nothing to do with the color." To this, some netizens said, what does the announcement say? Hit yourself in the face?

In addition to the coolant problem officially mentioned by BYD, some netizens suggested that in the evaluation video, there were three irregular piercing holes in the middle of the Han EV driver's seat threshold bar. If the piercing hole affected the whole vehicle during the impact, there was a reason for its serious extrusion deformation in the collision test. On the evening of July 25, the online live broadcast of "car understanding proving ground" responded to netizens' questions about the incident. In response to the situation of car body drilling, "knowing car proving ground" said that it was the welcome pedal hole made by BYD's original factory.

On July 26, the official statement said that the "car Test ground" is an original collision test program under the emperor, and that there is no commercial cooperation with car companies, and the selection of collision vehicles is not aimed at specific enterprises. Each program maintains a complete video from car purchase to test completion, with technical support from an authoritative organization, and relevant materials can be submitted for notarization.

At present, the incident has reached the stage of stalemate again. BYD initially thought that the replacement of battery antifreeze caused the vehicle to self-ignite, but in fact, mass-produced cars have two different colors of antifreeze, so it is obviously not rigorous to attribute the cause of the vehicle to the antifreeze. So what is the cause of the fire? This is worth investigating.

In addition, putting aside the situation of vehicle spontaneous combustion, the result of the collision between BYD EV and polar fox Alpha is obviously not ideal. Although Han EV achieved good results in C-NCAP and C-IASI, in the collision test of understanding car Emperor, the engine room of Han EV collapsed seriously, and the problems of fracture of anti-collision beam and obvious deformation of A-pillar are also the main aspects that car owners pay attention to.

As we all know, car understanding Emperor has conducted collision tests on a number of vehicles, including Weilanda-Haoying, New Xuanyi-Old Xuanyi, Carola-Suiteng, Mercedes-Benz C-BMW 3-Series and so on. Some people in the industry believe that understanding the car emperor does not have the test qualification for a two-car collision, and carries on a two-car collision at the speed of 64km/h. In reality, the situation is that two cars collide with each other at the speed of 64km/h and one car is driving in the opposite direction. This situation is relatively small and does not have reference value. Some people believe that there is no so-called standard, which is to simulate the various possibilities that exist in reality, even if this situation is rare, but it still has reference value.

Judging from this incident, the "lethal force" to BYD is not small. As one of BYD's best-selling models, the BYD EV can't have the slightest negative news, because it could lead to a decline in sales. In fact, consumers value the attitude of the brand more than vehicle safety, regardless of whether it is caused by the product or not, they hope that the authorities can look at it positively and give car owners and potential consumers a reassuring answer.

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