公开(公告)号：US20180237059A1

公开(公告)日：2018-08-23

申请号：US15753122

申请日：2016-08-17

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Fanliang MENG ,  Ting WEN ,  Yanfei XIONG

IPC: B62D5/04 ,  B62D9/00 ,  B62D15/02 ,  B60T8/1755

CPC classification number: B62D5/0484 ,  B60T8/17552 ,  B62D5/0418 ,  B62D5/0463 ,  B62D5/0481 ,  B62D9/005 ,  B62D11/003 ,  B62D15/025 ,  Y02T10/7258

Abstract: An auxiliary steering system (100) and method for an electric vehicle and the electric vehicle are disclosed. The system includes a detection component (6A) including a first electric motor (4) and a detection controller (6) configured to determine whether a steering assist device (2) is normal, to continue to determine whether the steering assist device (2) is normal if yes, and to control a drive rack (5A) of the first electric motor (4) to drive wheels (17) of the electric vehicle to return and to output a steering failure signal, a steering wheel torque signal and a direction signal if no; an electric motor controller (8); a second electric motor (14); and a vehicle controller (7). The electric motor controller (8) is further configured to control the second electric motor (14) to increase a drive torque for an outer front wheel (17), to brake an inner rear wheel (17), and to stop driving an inner front wheel (17) and an outer rear wheel (17).

公开(公告)号：US20180229610A1

公开(公告)日：2018-08-16

申请号：US15750042

申请日：2016-08-10

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Fanliang MENG ,  Yanfei XIONG ,  Weiqiang CHEN

IPC: B60L3/00 ,  B60T7/04 ,  B60T8/171 ,  B60T8/172 ,  B60T8/72 ,  B60T13/74 ,  B60L7/18 ,  B60L7/26 ,  B60L11/18 ,  B60L15/20

Abstract: A brake system (100) and a brake method for a four-wheel drive electric vehicle and a four-wheel drive electric vehicle, in the system, according to a brake mode of the electric vehicle, a state of charge of a battery pack (4) and a vehicle speed, a first brake control unit controls a motor (6) to brake a wheel (9) through a motor controller (2) and a second brake control unit controls a brake actuator (12) to brake the wheels (9). The first brake control unit further determines whether a brake torque of the brake actuator (12) on the wheels (9) fails. If yes, the first brake control unit controls the motor (6) to brake the corresponding wheel (9) through the motor controller (2).

公开(公告)号：US20200031357A1

公开(公告)日：2020-01-30

申请号：US16331333

申请日：2017-08-25

Applicant: BYD COMPANY LIMITED

Inventor： Heping LING ,  Fanliang MENG ,  Mingchuan SHI ,  Yanfei XIONG ,  Weiqiang CHEN

IPC: B60W40/076 ,  B60W30/18 ,  B60K7/00 ,  B60W40/105

Abstract: A hill descent system for a vehicle and a control method thereof comprising: wheels; wheel speed sensors used for detecting the speeds of the wheels; motors used for selectively driving or braking the wheels; a motor controllers, for controlling the working states of the motors; resolver sensors for detecting the rotational speeds of the motors; and a vehicle control unit for determining the actual downhill speed of the vehicle and adjusting the working states of the motors to control the descent of the vehicle.

公开(公告)号：US20180237001A1

公开(公告)日：2018-08-23

申请号：US15753105

申请日：2016-08-18

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Ning WANG ,  Yanfei XIONG ,  Ting WEN

IPC: B60W30/02 ,  B60K7/00 ,  B60W10/08 ,  B60W10/184

CPC classification number: B60W30/02 ,  B60K7/0007 ,  B60K17/043 ,  B60K17/356 ,  B60K2007/0092 ,  B60L3/0076 ,  B60L3/0092 ,  B60L3/108 ,  B60L7/10 ,  B60L7/18 ,  B60L11/18 ,  B60L2220/42 ,  B60L2220/46 ,  B60L2240/16 ,  B60L2240/18 ,  B60L2240/22 ,  B60L2240/24 ,  B60L2260/28 ,  B60W10/08 ,  B60W10/184 ,  B60W2510/20 ,  B60W2520/105 ,  B60W2520/125 ,  B60W2520/14 ,  B60W2520/26 ,  B60W2520/28 ,  B60W2530/20 ,  B60W2540/18 ,  B60W2710/083 ,  B60W2720/14 ,  B60Y2200/91

Abstract: A vehicle stability control system includes a signal collection sensor and a vehicle controller (10). The signal collection sensor is configured to collect a vehicle condition information parameter, and the vehicle controller (10) is configured to calculate a control yaw moment according to the vehicle condition information parameter. The control yaw moment is used to cancel a difference between an estimated yaw moment and an actual yaw moment. The vehicle controller (10) is further configured to determine according to the vehicle condition information parameter whether the vehicle (100) is in a stable region or a non-stable region in the case of tire blow-out, and allocate the control yaw moment to four wheels (101) according to a vehicle stability condition, thus implementing vehicle stability control. A vehicle stability control method and a vehicle (100) with the vehicle stability control system are also disclosed.

公开(公告)号：US20180236989A1

公开(公告)日：2018-08-23

申请号：US15751763

申请日：2016-08-10

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Fanliang MENG ,  Yanfei XIONG ,  Mingchuan SHI

IPC: B60T8/1755 ,  B60T8/171 ,  B60T8/172 ,  B60T8/30 ,  B60T8/32 ,  B60T13/74 ,  B60L7/18

CPC classification number: B60T8/17551 ,  B60L7/18 ,  B60L2240/16 ,  B60L2240/18 ,  B60L2240/22 ,  B60L2240/24 ,  B60T8/171 ,  B60T8/172 ,  B60T8/17552 ,  B60T8/17554 ,  B60T8/1769 ,  B60T8/30 ,  B60T8/3205 ,  B60T13/741 ,  B60T2230/02 ,  B60T2230/03 ,  B60T2240/06 ,  B60T2270/302 ,  B60T2270/613 ,  B60W30/04

Abstract: The embodiments of the present application disclose a stability control system and a stability control method for a four-wheel drive electric vehicle and the four-wheel drive electric vehicle. In the stability control system, when the lateral acceleration is equal to or greater than an acceleration threshold, at least one of a first braking force signal, a second braking force signal, a first logic signal and a second logic signal is obtained. When the first logic signal is obtained, the body of the electric vehicle is controlled to keep stable. When the first braking force signal and the second logic signal are obtained, a motor is controlled to apply braking force to an outside front wheel. When the second braking force signal and the second logic signal are obtained, motors are controlled to apply braking force to the outside front wheel and an inside rear wheel.