Electrical disconnector device for disconnecting 50V battery and electric motor of e.g. pure electric car in case of accident, has disconnector formed of permanent magnet, and sensor arranged outside housing

摘要

The device has a disconnector (12) arranged in a housing (14) and movable relative to an interface (6). The disconnector is accelerated in a direction of the interface by an ignition wire (8a). A sensor (9) is arranged in a space in a region of the disconnector and senses a position of the disconnector. The disconnector is formed of an annular permanent magnet. The sensor is arranged outside the housing. The disconnector is electrically isolated from the sensor by the housing. The interface disconnects an electrical current path between connectors (4a, 4b) in a disconnect state. The disconnector is designed as a bolt. The sensor is designed as an induction sensor, a reed sensor or a Hall sensor.