马斯克发文解释起火事件 特斯拉股价反弹4.43%

特斯拉的起火事件发生之后，公司股票迅速下跌6.2%。特斯拉CEO艾伦-马斯克(Elon Musk)周五在特斯拉官网发表文章解释Model S起火事件，对特斯拉电动车的安全性能进行辨析，并详细的解释了起火的原因。在经过特斯拉一系列的危机公关手段处理之后，周五特斯拉股价出现反弹，收于180.98美元，上涨4.43%。

特斯拉表示，起火原因是由于该车在行驶过程中与一个从半挂车上脱落的金属物体发生碰撞，该金属物体对汽车底部0.25英寸厚的电池保护层施加了高达25吨的冲击力，并形成了一个直径为3英寸的穿孔。而在事故发生后，车辆的警报系统装置还提醒司机将车开到路边。

同时，他还详细的介绍了Model S底部16个由防火墙隔离的电池仓结构，并表示火灾发生时，大火仅在车头前方燃烧，并没有蔓延至驾驶舱，事故并没有造成人员伤亡。

此外，面对大众对特斯拉电动车安全性能的质疑，马斯克还引用了一组数据：在美国普通骑车平均每行驶2000万英里发生一起火灾，而特斯拉则可以达到1亿英里，普通汽车遭遇火灾可能性是特斯拉的5倍。

而在文章的最后，马斯克还附上了特斯拉销售与服务主管杰罗姆·吉伦（Jerome Guillen）在致受损Model S车主的邮件记录。邮件显示车主也是特斯拉的投资人，同时车主还表示：汽车电池经历了一次‘可控燃烧’，但是互联网上的图片显然夸张了。

实际上，从马斯克的这篇“辟谣”文章上来看，说是对特斯拉的技术“炫耀”或者更为贴切点，从马斯克的字里行间，更多的是对特斯拉电动车安全性能的一种自信，而也这是这样的一种自信，才使得在短短的几天内，将特斯拉的股价从危险边缘重新拉回。【汽车营销分析】

附上特斯拉官网原文：

Earlier this week, a Model S traveling at highway speed struck a large metal object, causing significant damage to the vehicle. A curved section that fell off a semi-trailer was recovered from the roadway near where the accident occurred and, according to the road crew that was on the scene, appears to be the culprit. The geometry of the object caused a powerful lever action as it went under the car, punching upward and impaling the Model S with a peak force on the order of 25 tons. Only a force of this magnitude would be strong enough to punch a 3 inch diameter hole through the quarter inch armor plate protecting the base of the vehicle.

The Model S owner was nonetheless able to exit the highway as instructed by the onboard alert system, bring the car to a stop and depart the vehicle without injury. A fire caused by the impact began in the front battery module – the battery pack has a total of 16 modules – but was contained to the front section of the car by internal firewalls within the pack. Vents built into the battery pack directed the flames down towards the road and away from the vehicle.

When the fire department arrived, they observed standard procedure, which was to gain access to the source of the fire by puncturing holes in the top of the battery's protective metal plate and applying water. For the Model S lithium-ion battery, it was correct to apply water (vs. dry chemical extinguisher), but not to puncture the metal firewall, as the newly created holes allowed the flames to then vent upwards into the front trunk section of the Model S. Nonetheless, a combination of water followed by dry chemical extinguisher quickly brought the fire to an end.

It is important to note that the fire in the battery was contained to a small section near the front by the internal firewalls built into the pack structure. At no point did fire enter the passenger compartment.

Had a conventional gasoline car encountered the same object on the highway, the result could have been far worse. A typical gasoline car only has a thin metal sheet protecting the underbody, leaving it vulnerable to destruction of the fuel supply lines or fuel tank, which causes a pool of gasoline to form and often burn the entire car to the ground. In contrast, the combustion energy of our battery pack is only about 10% of the energy contained in a gasoline tank and is divided into 16 modules with firewalls in between. As a consequence, the effective combustion potential is only about 1% that of the fuel in a comparable gasoline sedan.

The nationwide driving statistics make this very clear: there are 150,000 car fires per year according to the National Fire Protection Association, and Americans drive about 3 trillion miles per year according to the Department of Transportation. That equates to 1 vehicle fire for every 20 million miles driven, compared to 1 fire in over 100 million miles for Tesla. This means you are 5 times more likely to experience a fire in a conventional gasoline car than a Tesla!

For consumers concerned about fire risk, there should be absolutely zero doubt that it is safer to power a car with a battery than a large tank of highly flammable liquid.

— Elon