Charging device and charging control method

The invention provides a charging device and a charging control method. The charging device comprises a voltage conversion module, a rectifier module, a chopping module, a vehicle-mounted energy storage module and a ground energy storage module, wherein the voltage conversion module is used for receiving voltage of electric supply, converting the voltage of the electric supply to a first output voltage, and outputting the first output voltage to the rectifier module; the rectifier module is used for receiving the first output voltage, converting the first output voltage to a second output voltage, and outputting the voltage to the chopping module; the chopping module is used for receiving the second output voltage, converting the second output voltage to a third output voltage when an energy storage type vehicle arrives at the station, outputting the third output voltage to the vehicle-mounted energy storage module, meanwhile converting a fourth output voltage outputted by the ground energy storage module to a fifth output voltage to be outputted to the vehicle-mounted energy storage module, and converting the second output voltage to a sixth output voltage to be outputted to the ground energy storage module when the energy storage type vehicle leaves from the station. The charging device and the charging control method disclosed by the invention can give full play of the charging function of the charging device.