Electric-vehicle battery packs are made of hundreds to thousands of battery cells, each of which contains a flammable liquid electrolyte. Managing the risks of lithium-ion battery fires comes down to two things: keeping the electrolyte from catching fire, and keeping a fire from spreading if it does happen.
However, lithium-ion battery cells themselves can sometimes generate enough heat to ignite the electrolyte in a process known as thermal runaway. Short-circuits between the two electrodes in a battery cell, for example, can heat up the electrodes. If these electrodes get too hot, the heat can trigger chemical reactions that quickly generate more heat until the electrolytes burst into flame. This seems to be what happened in the Tesla fires, when damage to the battery packs caused short-circuits leading to thermal runaway.
Short circuits can be the result of manufacturing defects, but battery makers have become very good at preventing those. When batteries are used as intended, there’s only one fire for every 100 million lithium-ion battery cells out there, says Jeff Dahn, professor of physics and chemistry at Dalhousie University. Tesla also guards against thermal runaway events with an extensive liquid cooling system designed to cool the cells so fast that if one cell catches fire, its neighbors won’t.
If, however, multiple cells are damaged, the cooling system might not be enough. “If the Tesla pack is abused severely by a large metal object thrust through the pack, it will probably have a fire in most instances,” Dahn says.
Tesla further protects the battery pack with a quarter-inch-thick plate of hardened aluminum. In many cases, this seems to work. The Model S earned the highest safety ratings from NHTSA after crash tests. But the protection didn’t prove to be enough in the case of the fires.
暂时没买这车的网友是否都是因为担心它车祸后的问题？
额，上次特斯拉出事，消防车到了也没法灭火，因为电池稳定性差不能用水灭
改进？那就不能用电池了，这种电池就是容易导致碰撞后不稳定起火，一旦起火，三元锂电池还不能用水和二氧化碳灭，会导致加速化学反应。。。
特别是那些从纽约来回佛州的长途。
除了刀、锤之外还有军用野餐、燃烧棒、饮水、毛毯、手电、枪。
啥是军用野餐？
铲，
工兵铲
However, lithium-ion battery cells themselves can sometimes generate enough heat to ignite the electrolyte in a process known as thermal runaway. Short-circuits between the two electrodes in a battery cell, for example, can heat up the electrodes. If these electrodes get too hot, the heat can trigger chemical reactions that quickly generate more heat until the electrolytes burst into flame. This seems to be what happened in the Tesla fires, when damage to the battery packs caused short-circuits leading to thermal runaway.
If, however, multiple cells are damaged, the cooling system might not be enough. “If the Tesla pack is abused severely by a large metal object thrust through the pack, it will probably have a fire in most instances,” Dahn says.
Tesla further protects the battery pack with a quarter-inch-thick plate of hardened aluminum. In many cases, this seems to work. The Model S earned the highest safety ratings from NHTSA after crash tests. But the protection didn’t prove to be enough in the case of the fires.
https://www.technologyreview.com/s/521976/are-electric-vehicles-a-fire-hazard/
根本不一样，当然你喜欢买就买好了
这玩意没把子蛮力一时半会拔不出来，还是女士的细高跟鞋跟更趁手
除非你还开那种手摇车窗的车，或者车里常备逃生工具。现在都是电动车窗，汽油车掉水里一样死翘翘，前几年就看到过类似的新闻，看完就下单ResQMe了。
在那种慌乱的情况下，顺利快速拔出的几率接近0
还是老老实实买2个安全锤，驾驶副驾各放一个来的靠谱，一共也没有5刀的事儿。
锂电池起火用油灭？哈哈哈，但是一想到火上浇油。。。
amazon搜 car escape tool
现在消防车都灭不了锂电池的火，这是主要问题。
西人同事７０出头的爹买了，他说爹平时不开，只在和老哥们儿一起打高尔夫时开。我想可能也是出于安全考虑。短时间开开兜风。：）
只不过还不成熟
加州的一次车祸
采访了消防负责人
特斯拉车祸后灭火不易
三个小时后，在拖车场或者在拖车过程中
又一次自燃
有兴趣的可以google以下英文的关键词
有采访视频
所以你朋友觉得hydrogen这种高度易燃一点就爆炸的更安全？？
很好拆啊，拆过好几次了，边上有个按钮，按下去就能拔出来
不同电车用的电池不一样。我personally 觉得prius的技术其实成熟得多。
这不就是西游记里的三昧真火么！
这个model 3的车主60mph的速度撞了车把车都total了，但是自己安全的走出来了，拖车司机都跟他说这么程度的车祸普通汽油车很少有司机能自己这么走出来的。这个可能就是独立事件，也不想用这个例子比较特斯拉和普通汽油车的安全性，就是想告诉楼主不要太担心了，别的不知道，至少特斯拉一出车祸肯定就没救是谣言。
但如果电池撞撞就起火的话，相信政府也不会推电动车
Tesla的安全性还包括它的自动导航系统（好像也有可能让你撞车
电池起火应该是在某些极端情况下会发生，但我看了最近两次起火的，都是高速车头正撞在路障或者树上
这样的情景，就算不起火，能让人生还的suv不知道能有几辆。
不知道我这样理解对不对，请指正
其实是所有电车都适用
而且我就好奇电车的这些环保专家难道没想过这个问题么？
燃油车报废了油去了油就好了
电池车报废了，纯电动车，比如特斯拉这一辆车就是7000多节电池，到时候怎么处理？
谢谢，你们会开它长途自驾游吗？
以前也讨论过，制造更大的污染.
我们开过几次半天到一天单程车程的长途，高速沿路快速充电桩很充足，体验还不错，像lake tahoe, 优胜美地这些偏僻地方也都会有tesla自己的快速充电桩，总的来说跟汽油车的加油便利程度差别不大。不过开长途自动驾驶的舒适性要强太多了，因为可以自动跟车加减速变道等等，和自动巡航还是有本质区别，特别是堵车的时候最能体现解放双手和右脚的好处。安全性上面，长途容易疲劳驾驶，不光是特斯拉，现在很多车都有的辅助刹车也很有帮助。年初湾区雨季时候看过高速上连环十几辆追尾，第一辆就是特斯拉，前面车急刹车的话，人脑反应来不及，但是电脑可以帮你刹住，但可惜后面的一溜车都没来得及反应上。
终于明白为啥特斯拉那么受欢迎了。：）
华人买房子不买高压电线旁，那么有没有测过快速充电桩旁边的电磁辐射值？