https://insideevs.com/news/334322/tesla-patents-pyrotechnic-battery-safety-device/ https://insideevs.com/news/334322/tesla-patents-pyrotechnic-... tl;dr There

https://insideevs.com/news/334322/tesla-patents-pyrotechnic-battery-safety-device/ https://insideevs.com/news/334322/tesla-patents-pyrotechnic-... tl;dr There is a "pyrotechnic charge" to disconnect the battery in case of danger.