公开(公告)号：EP4549277A1

公开(公告)日：2025-05-07

申请号：EP23841841.2

申请日：2023-04-25

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  SHI, Mingchuan ,  WANG, Hongxia ,  FU, Luo

IPC: B60W30/18 ,  B60W10/14 ,  B60W60/00

Abstract: A vehicle drift control method and system, and a vehicle. The vehicle drift control method comprises: in response to a drift operation instruction by a user, obtaining a whole-vehicle required torque and vehicle state parameters; determining a front-axle torque ratio according to the state parameters; determining a front-axle required torque according to the front-axle torque ratio and the whole-vehicle required torque; and performing torque control respectively on a front-axle motor and a rear-axle motor according to the front-axle required torque and the rear-axle required torque, such that the torque distribution between the front and rear axles is more reasonable, and the drift duration and the drift safety are improved.

公开(公告)号：EP4530119A1

公开(公告)日：2025-04-02

申请号：EP23806851.4

申请日：2023-05-12

Applicant: BYD Company Limited

Inventor： LING, Heping ,  SHI, Mingchuan ,  ZHANG, Hao ,  YIN, Chao ,  WANG, Hongxia

IPC: B60L15/20

Abstract: A vehicle torque control method, comprising: step 101, acquiring the wheel speed of a wheel corresponding to a vehicle driver shaft, and according to the wheel speed of the wheel, calculating the equivalent rotating speed of a motor; step 102, acquiring the actual rotating speed of the motor corresponding to the driver shaft, and according to the equivalent rotating speed of the motor and the actual rotating speed of the motor corresponding to the driver shaft, calculating the equivalent rotating speed difference of the motor of the driver shaft to which the wheel is mounted; step 103, acquiring a corrected torque value according to the equivalent rotating speed difference of the motor of the driver shaft to which the wheel is mounted; and step 104, according to the corrected torque value, adjusting the output torque of the motor corresponding to the driver shaft. Also disclosed are a vehicle torque control apparatus, an electronic device, a storage medium, and a vehicle. The method reduces the difficulty of calculating the slip ratio. According to the state of the single wheel and the state of the single shaft, the torque of the motor of the driver shaft corresponding to a slipping wheel can be adjusted, and the adhesion utilization rate of the whole vehicle is improved, thereby improving the power performance of the whole vehicle, and avoiding the power loss caused by controlling torque reduction by means of the slip ratio.

公开(公告)号：EP4527671A1

公开(公告)日：2025-03-26

申请号：EP23807045.2

申请日：2023-05-18

Applicant: BYD Company Limited

Inventor： LING, Heping ,  SHI, Mingchuan ,  WANG, Hongxia ,  ZHANG, Hao ,  ZHOU, Binhao

IPC: B60L15/20

Abstract: A vehicle torque control method, comprising: step 101, acquiring a front axle equivalent axle speed and a rear axle equivalent axle speed of a vehicle, and determining an equivalent axle speed difference between front axles and rear axles of the vehicle according to the front axle equivalent axle speed and the rear axle equivalent axle speed; step 102, determining a drive shaft torque adjustment value according to the equivalent axle speed difference; and step 103, adjusting an output torque of a drive shaft motor according to the drive shaft torque adjustment value. Also disclosed are a vehicle torque control apparatus, an electronic device, a storage medium, and a vehicle. The sliding of wheels is controlled by means of an axle speed difference between a front drive shaft and a rear drive shaft, and the slipping of the wheels does not need to be controlled according to speed, so that dual-shaft closed-loop control can be performed in a full-speed domain; the sliding of the wheels is detected by means of the axle speed difference, so that quicker control is achieved, and a motor wheel speed difference between two shafts can be regulated and controlled in time, thereby avoiding endless power consumption.