Patent ID: 6147473
Filing Date: 2000-11-14
Classification: B60L,H02J,Y02T

Abstract:
A battery charging device of an electric car, comprising:a battery pack receiving power to charge and discharging to supply power;a battery charging controller controlling a charging of the battery pack at a constant power, and when a voltage of the battery pack is over a first voltage, controlling a constant current charging process, and after this, each time a peak value of the battery pack is over a second voltage, controlling a sequential reduction of current and performing a constant current charging process, and when the voltage of the battery pack is over a third voltage, controlling a constant voltage charging process at a fourth voltage, and when the charging voltage is over a fifth voltage, controlling a termination of the charging process; anda battery charger receiving external power according to the control of the battery charging controller, and charging the battery.