Patent ID: 8253380
Filing Date: 2012-08-28
Classification: G01R

Abstract:
1. A characteristic tracking method for a battery module comprising at least one battery, comprising: providing a look-up table according to a primary characteristic of the battery; detecting whether the battery satisfies a preset condition when the battery module is operated from a usage state to an idling state; measuring a first voltage and a real capacity of the battery when the battery satisfies the preset condition; utilizing the measured first voltage to located a table capacity of the battery from the look-up table; and updating the look-up table according to the real capacity and the table capacity, wherein when the usage state is a discharge state, the look-up table is utilized to provide a charge cutoff point, which serves as a discharge based point such that discharge characteristics of the battery can be obtained from the look-up table, and wherein when the usage state is a charge state, the look-up table is utilized to provide a discharge cutoff point which serves as a charge based point such that charge characteristics of the battery can be obtained from the look-up table.