Title:
TORQUE CONTROL METHOD AND APPARATUS FOR FOUR-WHEEL DRIVE ELECTRIC VEHICLE, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/148100
Kind Code:
A1
Abstract:
A torque control method and apparatus for a four-wheel drive electric vehicle, and a vehicle. The method comprises: when the total torque of a vehicle is changed from a drive torque to a feedback torque, determining the total feedback power of the vehicle according to the total torque of the vehicle and the current vehicle speed; respectively determining the allowable feedback power of a front electric motor and that of a back electric motor according to real-time states of the front electric motor and the back electric motor of the vehicle; according to the allowable feedback power, determining a first electric motor that executes torque zero-crossing control by means of a preset torque control curve; according to the total feedback power and the preset torque control curve of the first electric motor, determining an auxiliary torque control curve executed by a second electric motor, wherein the auxiliary torque control curve is used for executing non-zero-crossing control on the torque; and respectively adjusting the output torque of the first electric motor and that of the second electric motor according to the preset torque control curve and the auxiliary torque control curve.
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Inventors:
SHI WEIQI (CN)
SUN TAO (CN)
SUN TAO (CN)
Application Number:
PCT/CN2021/125828
Publication Date:
July 14, 2022
Filing Date:
October 22, 2021
Export Citation:
Assignee:
BEIJING CHJ INFORMATION TECH CO LTD (CN)
International Classes:
B60L15/20
Foreign References:
| CN112622642A | 2021-04-09 | |||
| CN111645536A | 2020-09-11 | |||
| CN110303899A | 2019-10-08 | |||
| US5164903A | 1992-11-17 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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