US Patent 9525291 Systems and methods for disengaging a battery

Systems and methods for disengaging a battery are disclosed. The systems and methods may be used to disengage a battery from a direct-current (DC) bus of a vehicle when the DC bus is under a load. In one implementation, the system includes one or more contactors between the battery string and the DC bus. The system also includes at least one transistor connected to the one or more contactors in series. The system further includes a controller configured to switch off the transistor and open the one or more contactors.