Battery control apparatus and method

A vehicle battery pack with a control function, which can be charged in an emergency and equipped with an auxiliary battery, the battery pack comprising:

• a main battery pack including at least one battery cell;
• a battery management system for measuring a cell voltage of the main battery pack and controlling the main battery pack;
• a charge/discharge control switch for switching charge/discharge power of the main battery pack under the control of the battery management system;
• an emergency charging module provided with an external charging terminal connected to the main battery pack and applying charging power directly to the main battery pack;
• an auxiliary battery connection module provided with an auxiliary battery connection terminal connected to a contactor of a main power line and applying power directly to the vehicle;
• and
• an emergency control module for switching to an emergency charging mode when a voltage is detected from the external charging terminal of the emergency charging module and switching to an auxiliary connection mode when a voltage is detected from the auxiliary battery connection terminal of the auxiliary battery connection module.

A battery control method controlling a battery in an emergency and implemented in a battery control apparatus provided in a vehicle battery pack, which can be charged in an emergency and equipped with an auxiliary battery, the battery control method comprising the steps of:

• (a) determining whether a voltage is applied to an external charging terminal connected to a main battery pack and applying charging power to the main battery pack and an auxiliary battery connection terminal connected to a contactor and applying power to the vehicle;
• (b) switching to an emergency charging mode, when the voltage is applied to the external charging terminal, and charging the main battery pack with the power supplied through the external charging terminal;
• and
• (c) switching to an auxiliary battery connection mode, when the voltage is applied to the auxiliary battery connection terminal, and supplying power from the connected auxiliary battery to the vehicle through the main power line.