The invention discloses a charging
system and a charging method of a charging-replacing
electric vehicle. The
system comprises a battery consumption measuring module of an
electric vehicle, a chargingand replacing control module of the
electric vehicle, a BMS of the electric vehicle, a VCU of the electric vehicle, a locking device of a
power battery pack of the electric vehicle, a charging and replacing
station server, a charging
pile, a replacing device, a
data terminal server and a
mobile phone customer service terminal. At work, the charging and exchanging
station server sends out
power consumption inquiry information to the charging and exchanging control module of the electric vehicle, the charging / replacing control module inquires the output electric quantity information of the
power battery stored in the battery electric quantity measuring module, and transmitting the power quantity information to the charging and replacing
station server, the charging and replacing substationserver calculates the cost according to the power quantity and transmits the cost information to the
data terminal server, the
data terminal server sends the
payment information to the
mobile phone customer service end, the vehicle owner pays the cost through the
mobile phone customer service end, and after the
payment is completed, the vehicle owner selects charging or
power exchange service.