Patent ID: 9077197
Filing Date: 2015-07-07
Classification: G01R,H01M,H02J,Y02E

Abstract:
1. A battery residual amount measurement device comprising: a first storage section that stores reference undischargeable amounts that correspond to ambient temperatures of a battery and current values of current discharged from the battery; a second storage section that stores a battery residual amount; a current detection section that detects a current value of current discharged from a measurement object battery and that outputs the current value of the current discharged from the measurement object battery; and a calculating section, to which the current value of the current discharged from the measurement object battery output from the current detection section is input, and that acquires, from the first storage section, the reference undischargeable amount that corresponds to an ambient temperature of the measurement object battery and the current value of the current discharged from the measurement object battery input from the current detection section, and outputs a present battery residual amount to the second storage section that corresponds to the acquired reference undischargeable amount and a nominal battery capacity of the measurement object battery.