CHARGE AND DISCHARGE CONTROL METHOD AND CIRCUIT AND INTEGRATED CHARGING AND DISCHARGING GUN

A charge and discharge control method, performed by a processor in a charge and discharge control circuit, includes in response to the existence of the voltage signal between the L1 terminal of the first interface module and the N/L2 terminal of the first interface module and the absence of voltage signal between the L1 terminal of the second interface module and the N/L2 terminal of the second interface module, controlling the vehicle to enter a charging mode; and in response to the absence of the voltage signal between the L1 terminal of the first interface module and the N/L2 terminal of the first interface module and the existence of the voltage signal between the L1 terminal of the second interface module and the N/L2 terminal of the second interface module, controlling the vehicle to enter a discharge mode.