Electric vehicle, vehicle-mounted charger, and method for controlling the same

A vehicle-mounted charger of an electric vehicle, comprising:

• an H bridge comprising a first switch transistor, a second switch transistor, a third switch transistor and a fourth switch transistor;
• and
• a controller configured to obtain a first predetermined discharging-period (Tm) for controlling the H bridge in a first manner and a second predetermined discharging-period (Tn) for controlling the H bridge in a second manner when a power battery of the electric vehicle starts to discharge via the vehicle-mounted charger;
• and to perform an alternate control on the H bridge in the first manner or the second manner according to the first predetermined discharging-period (Tm) and the second predetermined discharging-period (Tn), so as to perform a temperature balanced control over the first switch transistor, the second switch transistor, the third switch transistor and the fourth switch transistor.

An electric vehicle, comprising:

• a vehicle-mounted charger for the electric vehicle, the vehicle-mounted charger comprising:
• an H bridge comprising a first switch transistor, a second switch transistor, a third switch transistor and a fourth switch transistor;
• and
• a controller configured to obtain a first predetermined discharging-period (Tm) for controlling the H bridge in a first manner and a second predetermined discharging-period (Tn) for controlling the H bridge in a second manner when a power battery of the electric vehicle starts to discharge via the vehicle-mounted charger;
• and to perform an alternate control on the H bridge in the first manner or the second manner according to the first predetermined discharging-period (Tm) and the second predetermined discharging-period (Tn), so as to perform a temperature balanced control over the first switch transistor, the second switch transistor, the third switch transistor and the fourth switch transistor.