CHARGING SYSTEM FOR ELECTRIC VEHICLE AND METHOD FOR CONTROLLING CHARGING OF ELECTRIC VEHICLE

摘要

A charging system for an electric vehicle and a method for controlling charging of an electric vehicle are provided. The charging system comprises: a power battery (10); a charge-discharge socket (20); an external power supply device (1002); a charging connection device (1001); and an energy control device (1003), comprising: a three-level bidirectional DC-AC module (30); a charge-discharge control module (50); and a control module (60) configured to control the charge-discharge control module (50) according to a current working mode of the electric vehicle. The energy control device (1003) and the external power supply device (1002) communicate by transmitting a modulated PWM signal to each other via the charging connection device (1001), and the control module (60) controls the three-level bidirectional DC-AC module (30) and the charge-discharge control module (50) to charge the power battery (10) by the external power supply device (1002).

主权项

1. A charging system for an electric vehicle, comprising:
a charge-discharge socket configured for connecting with an external power supply device through a charging connection device comprising a first plug configured to connect with the external power supply device and a second plug configured to connect with the charge-discharge socket; and an energy control device configured to connect with a power battery, comprising:
a three-level bidirectional DC-AC module having a first DC terminal configured to connect with a first terminal of the power battery and a second DC terminal configured to connect with a second terminal of the power battery;a charge-discharge control module having a first terminal connected with an AC terminal of the three-level bidirectional DC-AC module and a second terminal connected with the charge-discharge socket; anda control module connected with a third terminal of the charge-discharge control module and a control terminal of the three-level bidirectional DC-AC module and configured to control the charge-discharge control module according to a current working mode of the electric vehicle; wherein the energy control device is configured to communicate with the external power supply device communicate by transmitting a modulated PWM signal via the charging connection device, and the control module is configured to control the three-level bidirectional DC-AC module and the charge-discharge control module to charge the power battery by the external power supply device.