A battery control apparatus for a vehicle battery pack, the battery control apparatus comprising: - a main charging terminal connected to a main battery pack for applying charging power from a battery charging station to the main battery pack; - an emergency charging unit including an external charging terminal for temporarily applying charging power, separately from the main charging terminal, to the main battery pack in an emergency when the vehicle battery pack is fully discharged in a location where the battery charging station is not accessible, a first voltage measurement unit for measuring the voltage of the external charging terminal, and an emergency charging switch for switching the connection between the external charging terminal and the main battery pack; - an auxiliary battery connection unit including an auxiliary battery connection terminal to which an auxiliary battery is externally mounted for applying power of the auxiliary battery to a vehicle power input terminal through a contactor, a second voltage measurement unit for measuring the voltage of the auxiliary battery connection terminal, and an auxiliary battery switch for switching the connection between the auxiliary battery connection terminal and the contactor; and - an emergency control unit configured to switch to an emergency charging mode by turning on the emergency charging switch when detecting an emergency charging through the external charging terminal based on the voltage measurement of the first voltage measurement unit or switch to an auxiliary battery connection mode by turning on the auxiliary battery switch when detecting mounting of the auxiliary battery based on the voltage measurement of the second voltage measurement unit. - a main charging terminal connected to a main battery pack for applying charging power from a battery charging station to the main battery pack; - an emergency charging unit including an external charging terminal for temporarily applying charging power, separately from the main charging terminal, to the main battery pack in an emergency when the vehicle battery pack is fully discharged in a location where the battery charging station is not accessible, a first voltage measurement unit for measuring the voltage of the external charging terminal, and an emergency charging switch for switching the connection between the external charging terminal and the main battery pack; - an auxiliary battery connection unit including an auxiliary battery connection terminal to which an auxiliary battery is externally mounted for applying power of the auxiliary battery to a vehicle power input terminal through a contactor, a second voltage measurement unit for measuring the voltage of the auxiliary battery connection terminal, and an auxiliary battery switch for switching the connection between the auxiliary battery connection terminal and the contactor; and - an emergency control unit configured to switch to an emergency charging mode by turning on the emergency charging switch when detecting an emergency charging through the external charging terminal based on the voltage measurement of the first voltage measurement unit or switch to an auxiliary battery connection mode by turning on the auxiliary battery switch when detecting mounting of the auxiliary battery based on the voltage measurement of the second voltage measurement unit.