ACCELERATION SLIP REGULATION CONTROL METHOD AND DEVICE FOR FOUR-WHEEL DRIVE ELECTRIC VEHICLE

WIPO Patent Application WO/2018/121595

A1

An acceleration slip regulation control method and device for a four-wheel drive electric vehicle. The control method comprises the following steps: detecting a depth of depression of an accelerator pedal and wheel speeds of the four wheels of an electric vehicle; estimating the vehicle speed of the electric vehicle by referring to the wheel speeds of the four wheels, determining a road condition at the location of the electric vehicle by referring to the wheel speeds of the four wheels and to the vehicle speed, and acquiring a required torque of the electric vehicle by referring to the depth of depression of the accelerator pedal, wherein the road condition comprises a low adhesion starting road, a joint road, and a bisectional road; and performing acceleration slip regulation of the four wheels respectively by referring to the road condition and the required torque. The control method can ensure, after the electric vehicle activates acceleration slip regulation, that rear wheels do not slip, that the electric vehicle does not undergo lateral displacement, and that a yaw rate is kept within a certain range. The control method can maximize the use of surface traction to improve escape capability of electric vehicles.

LIAN YUBO (CN)
LING HEPING (CN)
CHEN HAO (CN)
TIAN GUO (CN)
WEI XINMING (CN)

PCT/CN2017/118949

July 05, 2018

December 27, 2017

Click for automatic bibliography generation  

BYD CO LTD (CN)

B60L15/28

CN201792857U	2011-04-13
CN106183892A	2016-12-07
CN104742888A	2015-07-01
CN105253032A	2016-01-20
CN106218444A	2016-12-14
CN2862042Y	2007-01-24
US5376868A	1994-12-27

UNITALEN ATTORNEYS AT LAW (CN)

View/Download PDF      PDF Help

Previous Patent: VOLTAGE ADJUSTMENT METHOD, CONTROLLER, AND CHIP

Next Patent: WASHING MACHINE