公开(公告)号：US20200031357A1

公开(公告)日：2020-01-30

申请号：US16331333

申请日：2017-08-25

申请人： BYD COMPANY LIMITED

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

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

摘要： 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：US20180229610A1

公开(公告)日：2018-08-16

申请号：US15750042

申请日：2016-08-10

申请人： BYD COMPANY LIMITED

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

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

摘要： 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：US20180201255A1

公开(公告)日：2018-07-19

申请号：US15743547

申请日：2016-07-08

申请人： BYD COMPANY LIMITED

发明人： Yubo LIAN ,  Heping LING ,  Fanliang MENG ,  Mingchuan SHI ,  Weiqiang CHEN

IPC分类号： B60W30/045 ,  B60L15/20 ,  B60K7/00

CPC分类号： B60W30/045 ,  B60K1/00 ,  B60K7/00 ,  B60K7/0007 ,  B60K17/043 ,  B60K17/14 ,  B60K17/34 ,  B60K2007/0092 ,  B60L15/2036 ,  B60L2240/24 ,  B60L2240/423 ,  B60L2250/00 ,  B60L2260/28 ,  B60W2540/18 ,  B60W2710/083 ,  B60W2710/207 ,  B60W2720/14 ,  B60W2720/403 ,  B60W2720/406 ,  B60Y2200/91 ,  B60Y2400/3032 ,  B60Y2400/304 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275

摘要： A method and a system for controlling a vehicle (100) with four-wheel drive are provided. The method includes: acquiring a vehicle condition information parameter by a vehicle condition information collector; obtaining a radius of turning circle to be reduced from a driver by a turning circle receiver (40); obtaining a controlling yaw moment corresponding to the radius of turning circle to be reduced according to the vehicle condition information parameter and the radius of turning circle to be reduced by a turning circle controller (11); and distributing the controlling yaw moment to four wheels (90) of the vehicle (100) according to an intensity level of the radius of turning circle to be reduced and the vehicle condition information parameter by the turning circle controller (11), such that the vehicle (100) turns circle.