Battery management system and driving method thereof

Details Battery management system and driving method thereof Battery management system and driving method thereof

2011-03-08

2011-03-08

Tso, Edward (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

C320S134000, C320S104000, C702S063000, C307S010700

Reexamination Certificate

active

07902829

ABSTRACT:
A battery management system for managing a battery including a plurality of battery cells and a driving method are provided. The system includes a sensor, and a main control unit (MCU). The sensor senses a voltage and a current of the battery. The MCU receives the voltage and the current of the battery, measures an open circuit voltage (OCV) in key-on using the battery voltage, and estimates an initial SOC depending on the OCV in the key-on. The MCU divides the OCV into first and second OCV regions, and, when the OCV in the key-on is in the first OCV region, estimates the initial SOC using a linear equation.

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Japanese Office Action dated Jun. 1, 2010 in corresponding Japanese Application No. 2007-114140.

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