BATTERY SYSTEM CAPABLE OF PACK RELAY DIAGNOSIS AND VEHICLE COMPRISING THE SAME

A battery system may include a plurality of battery packs, a plurality of first relays connected between a positive electrode of a corresponding battery pack and a first node for each of the plurality of packs, a plurality of second relays connected between an negative electrode and a second node of the corresponding battery pack for each of the plurality of packs, a capacitor having both ends connected between a first wiring connected to the first node and a second wiring connected to the second node, a resistor and a switch connected in series between the first wiring and the second wire, and after waking up and controlling the plurality of first relays and the plurality of second relays to be closed, when a current flowing from the plurality of battery packs to the capacitor is detected, a plurality of pack battery management systems (BMS) for determining the plurality of first relays and the plurality of second relays as normal.