HV Battery Disconnect & Fire-Off System

ST’s dedicated passive safety solutions based on pyroswitches can activate specific countermeasures such as battery disconnects or fire extinguishers to remove or reduce the risks related to crash events involving HEV/PHEV and BEV. Our pyrotechnical safety switch system triggers controlled micro-explosions, cutting the wiring between the high-voltage battery unit and the rest of the vehicle, thus reducing or eliminating the flow of current and risk of electric shock or fire. 

Flame, smoke and thermal sensors in addition to accelerometers can communicate with the vehicle’s airbag system, battery management system or vehicle control unit to activate the proper countermeasure. 

ST’s passive safety products serve the global automotive market with several millions of parts produced annually. Our airbag systems and deployment drivers are well established robust products with many years of proven experience in the field.