CHARGING CONTROL CIRCUIT, CHARGING CIRCUIT AND CHARGING CONTROL METHOD

A charging control circuit, a charging circuit, and a charging control method. The charging control circuit (100, 500) comprises: a communication interface housing (102, 502), a communication interface (103, 503), and a control sub-circuit (101, 501). ,The communication interface housing (102, 502) comprises a first conductive portion (1021, 5021), a second conductive portion (1023, 5023), and an insulating portion (1022, 5022). The insulating portion (1022, 5022) is provided between the first conductive portion (1021, 5021) and the second conductive portion (1023, 5023). The first conductive portion (1021, 5021) is connected to a first voltage terminal, the second conductive portion (1023, 5023) is connected to a second voltage terminal, and a first voltage connected to the first voltage terminal is greater than a second voltage connected to the second voltage terminal. The control sub-circuit (101, 501) is separately connected to the first conductive portion (1021, 5021) and the communication interface (103, 503) and is configured for controlling a power supply apparatus (504) electrically connected to the communication interface (103, 503) to start when detected that the voltage of the first conductive portion (1021, 5021) changes from the first voltage to the second voltage, such that the power supply apparatus (504) provides a charging voltage for the communication interface (103, 503).