Patent ID: 7671566
Filing Date: 2010-03-02
Classification: G01R,H01M,Y02E

Abstract:
1. A method for predicting remaining capacity of a battery comprising: (a) determining an initial battery capacity; (b) measuring a second voltage of the battery; (c) calculating a maximum possible battery voltage and a minimum possible battery voltage according to the second voltage, a maximum possible battery current and a minimum possible battery current provided by a power manager, and an internal resistance; (d) calculating a maximum possible battery remaining capacity and a minimum possible battery remaining capacity according to the maximum possible battery voltage, the minimum possible battery voltage, and a voltage-remaining capacity table; (e) comparing the maximum possible battery current with the minimum possible battery current; and (f) calculating a battery remaining capacity according to a comparison result of step (e), the maximum possible battery remaining capacity, and the minimum possible battery remaining capacity.