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The safety of new energy vehicles has been concerned by the society, especially the incidents of spontaneous combustion of new energy batteries are frequently exposed. A few days ago, the China Automotive Technology Research Center made public the double collision test of three electric vehicles for the first time.

It is understood that the purpose of this collision test is to test that the electric car is hit by both side and rear vehicles while waiting for the traffic light. It often occurs in actual traffic accidents. As a result, Wang Fang, chief expert of the China Automotive Technology Research Center, said that they made a very close experiment in the crash test.

From the test video, the silver vehicle B is stationary, simulated parked in the red street light parking area, first hit by the red code A vehicle at the speed of 50km/h, and then hit by the white code C vehicle from the side.

As the collision test of the new energy vehicle to the vehicle is more complex, it requires that the rigid strength of the body structure can protect the occupants and whether the front and side airbags are all opened; at the same time, the protection of the battery pack is particularly important, once because of this kind of impact, it may cause a fire due to the short circuit of the electric control and battery system, there is a great hidden danger.

According to the national new energy vehicle fire report, the most dangerous is the battery quality problem, because the power battery is collided, squeezed, pierced, it is easy to cause thermal out of control, thus igniting the vehicle is the most common.

The test vehicles are all BAIC new energy models, and the target is BAIC New Energy EX3 (car B), the first rear car (A car) is EX3, and the side impact (C car) BAIC New Energy EU3.

The crash test results show that the structure of the car body performs well, and the part of the rear collapse is mainly caused by the invasion of the bumper; the side threshold beam with its own high-strength steel better protects the side impact and provides sufficient space for passengers. As for the battery, the bottom remains intact after inspection, and there is no extrusion and leakage, short circuit and smoke.

For electric vehicles, in addition to meeting the needs of transportation, adequate safety guarantee is the basic condition for users to choose. Although the crash test uses the 2018 version of the C-NCAP score test standard, which has achieved good performance, it is still based on the collision standard of fuel vehicles as a reference. At present, the collision standard for electric vehicles is still missing.

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