Battery management apparatus, and battery pack and vehicle including the same

A battery management apparatus for managing a battery pack that includes a battery module, a first charging/discharging terminal connected to a load, a second charging/discharging terminal connected to the load, a first main relay connected between a positive electrode terminal of the battery module and the first charging/discharging terminal, and a second main relay connected between a negative electrode terminal of the battery module and the second charging/discharging terminal, the battery management apparatus comprising:

• a pre-charging unit having a plurality of switches and connected to the first main relay in parallel, the pre-charging unit being connected between the second main relay and the second charging/discharging terminal;
• a control unit configured to control the plurality of switches so that an output voltage of the battery module is reduced to a reduced voltage and output between the first charging/discharging terminal and the second charging/discharging terminal;
• and
• a diagnosing unit configured to diagnose a connection state in the load based on a load current value of the current flowing in the load to which the reduced voltage is applied.