BATTERY SYSTEM WITH COOLING CIRCUIT

The present disclosure refers to a battery system (100). The battery system (100) includes a plurality of battery cells (10) accommodated in a housing (12). The battery system (100) comprises a cooling circuit (20) including a cooling channel (26) and configured to conduct a coolant through the cooling channel (26), wherein the coolant is in thermal contact with at least a portion of the plurality of battery cells (10) while flowing through the cooling channel (26). The battery system (100) further comprises an eddy current heater (30) including a ferrous material (40), wherein the eddy current heater (30) is configured to heat the ferrous material (40) by inducing eddy currents in the ferrous material (40) and to transfer heat to the coolant in the cooling channel (26). Further, the ferrous material (40) is disposed inside at least a portion of the cooling channel (26) and/or surrounds at least a portion of the cooling channel (26).