ACTIVE CURRENT INJECTION THROUGH A FUSE FOR AN ELECTRIC MOBILE APPLICATION

A system includes a vehicle having a motive electrical power path; a power distribution unit comprising a current protection circuit disposed in the motive electrical power path, the current protection circuit comprising a thermal fuse and a contactor in a series arrangement; a current source circuit electrically coupled to the thermal fuse and structured to determine that a load power throughput of the motive electrical power path is low, and to inject a current across the thermal fuse in response to the load power throughput of the motive electrical power path being low; a voltage determination circuit electrically coupled to the thermal fuse and structured to determine at least one of an injected voltage amount and a thermal fuse impedance value; and wherein the current source circuit determines the load power throughput of the motive electrical power path is low in response to the vehicle being in a shutdown state.