Bolt EV 软件修复后再次发生自燃事故
上周六,通用BOLT EV在美国又发生了一起自燃事故,这是BOLT EV发生的第6起自燃事故,与前面5起所不同的是,该车辆是在更新了通用最终的补救措施之后发生的。
根据Electrek上对事故的采访来看,该辆BOLT EV在发生起火前的基本使用情况如下:
车辆较新,使用2.5年内仅行驶约3.06万公里;
车主充电习惯较好,很少满充;
车辆在此之前没有损坏过;
起火前,车辆大约充了75%;
车辆是在停置几个小时后才起火。
起火事件的整个过程大约为:车主先是闻到异常气味→车辆冒烟→迅速起火,火从后排座椅冒出。

这对通用来说不是一个好的信号,如果确认仍是电芯问题,那么将意味着此前的补救措施是无效的。
Bolt EV此前的5起自燃事故分别发生的日期是:2019年3月17日、2020年6月29日、2020年7月4日、2020年7月30日和2020年8月25日;根据通用的调查,有4起事故车辆在起火前SOC是处于相对高的水平。
在随后与LG联合的调查中,通用和LG将导致起火的原因确定为电芯问题,与此同时,将充电的SOC限制为90%。
General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2017-2019 model year Chevrolet Bolt EV vehicles. A certain number of these vehicles were built with high voltage batteries produced at LG Chem’s Ochang, Korea facility that may pose a risk of fire when charged to full, or very close to full, capacity. While our investigation into this condition continues, GM has developed software that will limit vehicle charging to 90% of full capacity to mitigate this risk.
The condition is specific to battery cells produced at LG Chem’s Ochang, Korea plant that are design level N2.1. Manufacturing records were used to identify vehicles built with battery cells of this design level that were produced at this facility.
All 2017-2018 Bolts are affected as well as certain 2019 Bolts with design level N2.1 batteries manufactured at the LG Chem’s Ochang plant.
加入知识星球知化汽车的百宝箱 可以下载公众号参考资料。