Protective device for traction battery used in vehicle e.g. electric vehicle, has controller that drives shutdown unit and selective shutdown unit in dependence on vehicle states and current signal output by current sensor

摘要

The protective device has a shutdown unit (1) that is connected with a selective shutdown unit (2) in series. The selective shutdown unit is switched off during excessive predefined current, or by a separate switching signal (22) output by controller (4). A current sensor (3) is provided for supplying current signal (13). The controller drives shutdown unit and selective shutdown unit in dependence on vehicle states and the current signal. An independent claim is included for method for protecting traction battery used in vehicle.