Patent ID: 10978882

Abstract:
The present invention discloses a constant-current charging circuit, energy storage power source and constant-current charging method. The constant-current charging circuit includes a DC-DC converting circuit and a current-feedback circuit. A voltage output of the DC-DC converting circuit is a positive output of the constant-current charging circuit. A negative output of the DC-DC converting circuit is connected to a ground. The DC-DC converting circuit is connected to positive and negative terminals for a direct current voltage power supply. The current-feedback circuit includes first to third resistors and a reference voltage terminal. The reference voltage terminal is connected to the ground via the first to third resistors being connected in series. A connection point between the third resistor and the second resistor is a negative output of the constant-current charging circuit. A connection point between the first and second resistors is connected with a feedback terminal of the DC-DC converting circuit.