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TFA mentions a "pyrotechnic battery" which sounds like a great feature for a military fort but not so much for an automobile?
by jessaustin 7y ago
TFA mentions a "pyrotechnic battery" which sounds like a great feature for a military fort but not so much for an automobile?
- rzzzt 7y ago"Disconnect" also belongs to the expression - essentially, a tiny explosive is used to ensure that the safety switch disconnects the battery from the load side, permanently and without arcing: https://insideevs.com/news/334322/tesla-patents-pyrotechnic-battery-safety-device/ https://insideevs.com/news/334322/tesla-patents-pyrotechnic-...
- BeeOnRope 7y agoIt was a "pyrotechnic battery disconnect", i.e., basically a type of switch/active fuse using some type of small explosive charge as part of its operation. Here's the patent for all the gory details: https://patents.google.com/patent/US9221343 https://patents.google.com/patent/US9221343 The fact that this part has a "problem" probably means that it was triggered, e.g., maybe some type of false collision detection, short circuit or other failure which ended up triggering the disconnect.
- dasv 7y agoA pyrotechnic battery disconnect, which I suppose cuts the connection to the battery instantly in case of accident to avoid shorting it. There are already pyrotechnic devices in cars: airbags are pyrotechnic, as well as safety belt detents. It's the fastest type of actuator.