公开(公告)号：US10227069B2

公开(公告)日：2019-03-12

申请号：US15743547

申请日：2016-07-08

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Fanliang Meng ,  Mingchuan Shi ,  Weiqiang Chen

IPC: B60W30/045 ,  B60K7/00 ,  B60L15/20 ,  B60K1/00 ,  B60K17/04 ,  B60K17/14 ,  B60K17/34

Abstract: 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.

公开(公告)号：US10967870B2

公开(公告)日：2021-04-06

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: B60K31/00 ,  B60W30/18 ,  B60W40/076 ,  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：US10543818B2

公开(公告)日：2020-01-28

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 ,  G06F19/00 ,  B60L15/20 ,  B62D6/00 ,  B60T8/60 ,  B60L7/18 ,  B60T8/171 ,  B60T8/172 ,  B60T8/30 ,  B60T8/32 ,  B60T13/74

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.