Patent ID: 6127810
Filing Date: 2000-10-03
Classification: H02J

Abstract:
A method of controlling charging of a rechargeable battery, comprising the steps of:detecting a first voltage which is a sum voltage of a battery voltage of the rechargeable battery and a voltage across an internal resistance of said rechargeable battery, which appears during charging of said rechargeable battery;detecting a second voltage which is said sum voltage, but which appears during interruption of charging of the rechargeable battery; andcontrolling the charging of the rechargeable battery on the basis of said first voltage and said second voltage,wherein a current setting resistor for setting a current for the rechargeable battery is serially connected to a charge path for charging said rechargeable battery,wherein a voltage across said current setting resistor is additionally added to said first voltage, andwherein said voltage across said current setting resistor appearing during interruption of the charging is additionally added to said second voltage.