Patent ID: 11865934
Assignee: BYD COMPANY LIMITED
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 17:
18. The integrated control system for the electric vehicle according to claim 17, wherein
the on-board charging circuit comprises a second H bridge, a second conversion bridge arm composed of two switch tubes connected in series, and a second AC/DC conversion circuit, and wherein a direct current (DC) terminal of the first H bridge is connected to the power battery, an AC terminal of the first H bridge is connected to a first secondary coil of the transformer, an AC terminal of the second H bridge is connected to a primary coil of the transformer, a first port of a DC terminal of the second H bridge is connected to one end of the second conversion bridge arm, a second port of the DC terminal of the second H bridge is connected to another end of the second conversion bridge arm, a midpoint of the second conversion bridge arm is connected to the second port of the AC charging and discharging port, one end of the second AC/DC conversion circuit is connected to a second secondary coil of the transformer, and another end of the second AC/DC conversion circuit is connected to the low-voltage battery;
the electronic control circuit comprises a first phase bridge arm, a second phase bridge arm, and a third phase bridge arm, wherein the first phase bridge arm, the second phase bridge arm, and the third phase bridge arm are connected in parallel to form a first bus terminal and a second bus terminal, and wherein the first bus terminal is connected to a first electrode of the power battery and one end of the second conversion bridge arm, and the second bus terminal is connected to a second electrode of the power battery and another end of the second conversion bridge arm; and
the motor comprises a first phase coil, a second phase coil, and a third phase coil, wherein one ends of the first phase coil, the second phase coil, and the third phase coil are connected to form a star-shaped connection point, one end of the first phase coil is connected to a midpoint of the first phase bridge arm, one end of the second phase coil is connected to a midpoint of the second phase bridge arm, and one end of the third phase coil is connected to a midpoint of the third phase bridge arm, wherein the star-shaped connection point is connected to the first port of the AC charging and discharging port.