Regulator, battery charging apparatus and battery charging method to prevent voltage of a battery from increasing beyond a full-charge voltage during chattering

摘要

[Problem to be Solved];To provide a regulator capable of more appropriately preventing the voltage of a battery from increasing beyond a full-charge voltage during a battery chattering.;[Solution];A regulator 1 includes a rectifying circuit 2, a first battery detecting circuit 3, a first full-charge detecting circuit 4, a first differentiating circuit 5 having a fifth resistor r5 connected between a first terminal T1 and one end of a first capacitor C1 and a second capacitor connected in series with the fifth resistor r5 between the first terminal T1 and one end of the first capacitor C1, and a first driving circuit DR that controls the rectifying circuit 2 to rectify an alternating current according to output of an alternating-current generator ACG and controls the rectifying circuit 2 to operate or stop according to signal at one end of a first battery connecting switch element SW1.

主权项

1. A regulator that controls charging, by an alternating-current generator, of a first battery connected between a first terminal and a second terminal, the regulator comprising:
a rectifying circuit that rectifies an alternating current output from an output terminal of each phase of the alternating-current generator and outputs a charging current to the first battery; a first battery detecting circuit having a first resistor connected to the first terminal at a first end thereof a second resistor connected between a second end of the first resistor and the second terminal and a first switch element connected to the second terminal at a first end thereof and to the second end of the first resistor at a control terminal thereof; a first full-charge detecting circuit having a third resistor connected to the first terminal at a first end thereof, a fourth resistor connected between a second end of the third resistor and the second terminal, a first capacitor connected to the second end of the third resistor at a first end thereof and to the second terminal at a second end thereof and a second switch element connected to the control terminal of the first switch element at a first end thereof, to the second terminal at a second end thereof and to the first end of the first capacitor at a control terminal thereof; a first differentiating circuit having a fifth resistor connected between the first terminal and the first end of the first capacitor and a second capacitor connected in series with the fifth resistor between the first terminal and the first end of the first capacitor; and a first driving circuit that controls the rectifying circuit to rectify the alternating-current according to an output of the alternating-current generator and controls the rectifying circuit to perform or stop an operation to rectify the alternating current and supply power to the first battery according to a signal at the second end of the first switch element.