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Release time: 2021.10.10


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The test model is FAW-Volkswagen ID.4 CROZZ.

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At the end of July, a new energy vehicle caught fire and burned violently after a collision,The driver died in the accident;Just one month later,A new energy vehicle equipped with a power battery that perfectly passed the acupuncture test caught fire...


Without a doubt,When the range anxiety of new energy vehicles is resolved to a certain extent,Safety issues have become another new anxiety among consumers questioning new energy vehicles。Even if the manufacturer wants to promote safety,Conducted “exceeding standard” tests on power batteries,No smoke when pricked by acupuncture、Tests such as no short circuit when soaked in water,However, there have been many new energy vehicle safety accidents this year。

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01

 Power batteries must be safe The entire vehicle must be safer


mentions of new energy vehicles,The focus will always be on the power battery,Many people think that as long as the power battery is safe enough,Then new energy vehicles are very safe。In fact,The development of automobile safety is system engineering,In addition to the battery itself,Also with the complete vehicle、Associated components、Related to daily use and maintenance,Need to develop together around the entire electric vehicle ecosystem、Go to maintenance。

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Therefore,New energy vehicle safety will never make an overall leap due to the improvement of a single technology,But we need to constantly get closer to the real scene、Do tests closer to the cause of the accident,And optimize accordingly。


For example,Thermal Abuse、Electrical abuse and mechanical abuse are the main causes of fires in new energy seabet loginvehicles,The abuse of machinery is usually caused by car collisions,So a crash test is used to simulate a certain type of accident,It is very necessary to verify the security。


02

 Standard collision must be safe Safety is more important in special collisions


current,Domestic authoritative testing agencies have carried out crash tests related to new energy vehicles,Full vehicle frontal crash test including 25% offset crash、The side impact test has basically become a “must answer” question for every model on the market。


But for new energy vehicles,Compared with traditional cars, in addition to considering collision safety,We must also consider the electrical safety of the entire vehicle after a collision。

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The battery pack of new energy vehicles is rectangular,Usually arranged flatly on the bottom of the car body。Therefore,Compared to frontal collision and side collision,The collision point of the side pillar is closer to the battery pack,Battery withstands greater impact and squeeze force,Equivalent to "cutting" the battery pack directly with rigid pillars,It is one of the more stringent side impact test procedures than the moving barrier impact。

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At the same time,Because the collision points of the side pillar collision are more concentrated,Injuries to the driver’s head and ribs will also be more serious,And the collision position of the side columns in the longitudinal space is larger than that of the moving barrier,Smaller collision area,It is more difficult to disperse the collision force,It will produce strong "cutting force" on the vehicle。


Therefore,It is also generally believed in the industry that side pillar collisions can evaluate the overall safety of the vehicle,At the same time, electrical safety can also be verified in a targeted manner。

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In fact,Accidents such as side pillar collisions are also very common in life,The vehicle skidded and hit a big tree、Telegraph pole、Signs, poles and other objects,It belongs to the side pillar collision,These obstacles have huge stiffness but small contact surface,The amount of seabet mylocal intrusion into the side of the vehicle is much greater than that in a side collision,The injuries caused to the occupants in the car are very serious。


According to statistics from relevant institutions,38% of deaths caused by side collisions in China are caused by the occupant's head hitting objects such as trees or poles。Therefore,Whether it is for fuel vehicles or new energy vehicles,It is very necessary to carry out side pillar collisions。

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Side pillar collision has been implemented in EURO-NCAP for many years,But,Because side pillar collisions are extremely difficult for vehicle collision safety,This pilot project has not yet been officially introduced in China。


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 The first domestic double dummy side pillar collision is coming

 General Technology China Automobile Research Institute makes verification more difficult


As a third-party technology R&D and evaluation organization in the automotive industry,General Technology China Automotive Research Institute has been committed to building a virtuous cycle of "consumers-car companies-industry institutions"。Currently,GM China Automotive Research Institute has completed the testing and evaluation of hundreds of models,Covering 90% of mainstream models,Not only provides consumers with authoritative evaluation results,It also provides the industry with a large amount of automotive technical data and case studies,Provides effective basis for car companies to optimize product design。


In order to further verify the safety performance of new energy vehicles,Upgraded through evaluation standards,Promote industry technology upgrade,Improve product safety。General Technology China Automobile Research Institute plans to carry out the first double dummy side pillar impact test on October 10,The test model is FAW-Volkswagen ID.4 CROZZ.

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04

 Be safe in the driving position The passenger position must also be safe


This test refers to EURO-NCAP side column collision regulations,That is, the test vehicle (the longitudinal center lines of the vehicle form 75° ± 3° collision angle) side-impacts the fixed pile at a speed of 32km/h,seabet loginBy vehicle deformation、Dummy damage performance and battery condition,Verify vehicle、Safety performance of battery pack。


It’s worth noting,Compared to EURO-NCAP side pillar collision regulations,This test will also increase the difficulty - increase the damage value of the rear dummy (EURO-NCAP only examines the damage value of the front dummy)。


FAW-Volkswagen ID.4 Can CROZZ successfully pass the test,October 10th,Stay tuned。


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