VEHICLE-MOUNTED CHARGING DEVICE AND VEHICLE-MOUNTED CHARGING DEVICE CONTROL METHOD

Provided is a vehicle-mounted charging device in which a charging circuit subjects power supplied from an external power supply to power conversion and supplies power to a battery and a PTC heater in parallel. The vehicle-mounted charging device is provided with a control device which, when temperature adjustment of the battery by the PTC heater and charging of the battery are carried out at the same time, controls an output current of the charging circuit so as to approach a total value of an allowable value of charging current for the battery and a current consumption of the PTC heater at each time point during charging. The allowable value of charging current for the battery and the current consumption of the PTC heater are specified on the basis of battery characteristic information of the battery and heater characteristic information of the PTC heater which are stored in advance.