Patent ID: 9231419
Filing Date: 2016-01-05
CPC Classification: G01R,H01M,H02J,Y02E

Claim Text:
1. A semiconductor device for monitoring a condition of a secondary battery and controlling charging of the secondary battery, comprising: a voltage measuring unit for measuring a voltage of the secondary battery; a current measuring unit for measuring a current of the secondary battery; drive unit for driving a transistor for controlling a charge current of the secondary battery; and a data processing control unit for executing program processing; wherein the data processing control unit, based on measurement values obtained by the voltage measuring unit and the current measuring unit, generates condition information including information about a battery level of the secondary battery and controls the drive unit, wherein the drive unit is configured to be capable of selecting one of a plurality of different voltages as a drive voltage for turning on the transistor, and wherein the data processing control unit adjusts the charge current of the secondary battery by switching selection of the drive voltage.