Patent ID: 11923719
Assignee: GREAT WALL MOTOR COMPANY LIMITED
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 6:
7. An energy recovery controlling system, applied to a vehicle, the vehicle comprising a driving electric motor and a battery electrically connected to the driving electric motor, wherein the vehicle is pre-configured with a first energy-recovery-torque curve for the driving electric motor, the first energy-recovery-torque curve is for representing a correspondence relationship between an energy-recovery torque of the driving electric motor and a vehicle speed, and the system comprises:
one or more processors and a storage apparatus; and
the storage apparatus stores a computer program which, when executed by the processor, perform the operations comprising:
determining a first target-recovery-power upper-limit value according to the first energy-recovery-torque curve;
determining an available-charging-power upper-limit value of the battery;
when the available-charging-power upper-limit value is less than the first target-recovery-power upper-limit value, determining an inflection-point vehicle speed according to the available-charging-power upper-limit value and the first energy-recovery-torque curve, wherein the inflection-point vehicle speed refers to a vehicle speed that corresponds to a torque point in the first energy-recovery-torque curve where an energy-recovery power is equal to the available-charging-power upper-limit value;
detecting an energy-recovery signal and a current vehicle speed of the vehicle, and determining a reduction proportion of the first energy-recovery-torque curve according to a result of the detection of the energy-recovery signal, the current vehicle speed, the inflection-point vehicle speed, the available-charging-power upper-limit value, and the first target-recovery-power upper-limit value;
performing a reducing adjustment to the first energy-recovery-torque curve according to the reduction proportion, to form a second energy-recovery-torque curve; and
when the available-charging-power upper-limit value is less than the first target-recovery-power upper-limit value, according to the second energy-recovery-torque curve, controlling the driving electric motor to recover energy, and charging the battery when the energy-recovery signal is detected.