公开(公告)号：US11990853B2

公开(公告)日：2024-05-21

申请号：US17416853

申请日：2019-12-17

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Hua Pan ,  Feiyue Xie ,  Lijun Zhang

IPC: H02P27/08 ,  H02J7/00 ,  H02P29/62

CPC classification number: H02P27/085 ,  H02J7/0063 ,  H02P29/62 ,  H02J2207/20

Abstract: The present disclosure discloses a motor drive apparatus, a method for controlling the same, a vehicle, and a readable storage medium, where the control method includes: obtaining a required heating power and a required charging power; and adjusting a current value and direction of each phase current of a three-phase motor based on the required heating power, the required charging power, and an output of the motor at a zero torque, to simultaneously control a process of charging a power battery by a power supply module, the torque of the three-phase motor at a zero output, and a three-phase inverter and the three-phase motor to heat a heat exchange medium flowing through at least one of the three-phase inverter or the three-phase motor.

公开(公告)号：US11273833B2

公开(公告)日：2022-03-15

申请号：US16474636

申请日：2017-12-27

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Hao Chen ,  Guo Tian ,  Xinming Wei

IPC: B60W30/18 ,  B60K17/356 ,  B60L15/20 ,  B60W40/105

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

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：US10850599B2

公开(公告)日：2020-12-01

申请号：US16335918

申请日：2017-08-04

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Zhen Zhai ,  Fei Wu ,  Youbin Xu

IPC: B60K6/26 ,  B60K6/24 ,  B60K6/36 ,  B60K6/42 ,  B60K17/02 ,  B60K17/08 ,  B60K17/16 ,  B60K17/28 ,  B60K6/547 ,  F16H3/00 ,  F16H3/093 ,  B60K6/442 ,  F16H3/08

Abstract: The present disclosure provides a power-drive system for a vehicle and a vehicle. The power-drive system comprises: an engine; a plurality of input shafts, the engine being configured to selectively engage with at least one of the plurality of input shafts; a plurality of output shafts; a first motor power shaft, a motor power shaft first gear being arranged on the first motor power shaft, the motor power shaft first gear and the plurality of output shafts linking with a differential of the vehicle respectively; a second motor power shaft, a motor power shaft second gear linking with one gear-position driven gear being arranged on the second motor power shaft; a transfer gear, configured to selectively engage with the motor power shaft first gear to link with the motor power shaft first gear, and selectively engage with the motor power shaft second gear to link with the motor power shaft second gear; and a first motor generator, configured to link with the transfer gear.

公开(公告)号：US10723227B2

公开(公告)日：2020-07-28

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 ,  B60L7/18 ,  B60L7/26 ,  B60L15/20 ,  B60L58/13 ,  B60T7/04 ,  B60T8/171 ,  B60T8/172 ,  B60T8/72 ,  B60T13/74

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：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.

公开(公告)号：US10393249B2

公开(公告)日：2019-08-27

申请号：US15925926

申请日：2018-03-20

Applicant: BYD COMPANY LIMITED

Inventor： Heping Ling ,  Zhen Zhai ,  Feng Zheng ,  Youbin Xu

IPC: F16H48/11 ,  F16H48/10

Abstract: A differential, a power transmission system, and a vehicle are provided. The differential includes: a first planetary carrier, a first gear ring, and a first planetary gear disposed on the first planetary carrier and meshed with the first gear ring; and a second planetary carrier, a second gear ring, and a second planetary gear disposed on the second planetary carrier and meshed with the second gear ring and the first planetary gear, in which the first gear ring and the second gear ring are configured as two power output ends of the differential, the first planetary carrier and the second planetary carrier are configured as power input ends of the differential, and a revolution radius of the first planetary gear is different from a revolution radius of the second planetary gear.

公开(公告)号：US12132182B2

公开(公告)日：2024-10-29

申请号：US18008091

申请日：2021-06-04

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Hua Pan ,  Lei Yan ,  Feiyue Xie

IPC: B60L53/22 ,  B60L53/24 ,  B60L58/27 ,  H01M10/44 ,  H01M10/637 ,  H02P27/06

CPC classification number: H01M10/637 ,  B60L53/24 ,  B60L58/27 ,  H01M10/44 ,  H02P27/06

Abstract: The present disclosure relates to a battery energy processing device and method and a vehicle. The battery energy processing device includes: a bridge arm converter, having a first bus terminal connected with a positive electrode of a battery and a second bus terminal connected with a negative electrode of the battery; a motor winding, having a first end connected with a midpoint of the bridge arm converter; an energy storage device, respectively connected with a second end of the motor winding and the second bus terminal; and a controller, configured to control, in a first preset state, the bridge arm converter to charge and discharge the battery, so as to realize heating of the battery. In this way, the charging and discharging of the battery can be controlled, and internal resistance of the battery causes the battery to generate a large amount of heat, which causes a temperature rise of the battery, thereby realizing the heating of the battery.

公开(公告)号：US11801764B2

公开(公告)日：2023-10-31

申请号：US17635620

申请日：2020-08-13

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Jicheng Li ,  Hua Pan ,  Feiyue Xie

IPC: H02M7/68 ,  B60L53/24 ,  B60L53/22 ,  B60L58/15 ,  B60L58/14 ,  H02J7/00 ,  H02M7/797

CPC classification number: B60L53/24 ,  B60L53/22 ,  B60L58/14 ,  B60L58/15 ,  H02J7/0068 ,  H02M7/797

Abstract: The present invention relates to the technical field of vehicles, and provides an energy conversion device and a vehicle. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier, a motor coil connected with the reversible PWM rectifier, a one-way conduction module, and a capacitor. A DC charging circuit or a DC discharging circuit is formed by an external DC port with an external battery by using the energy conversion device, and a driving circuit is formed by the external battery with the reversible PWM rectifier and the motor coil in the energy conversion device. The one-way conduction module is connected between a first end of the capacitor and a second end of the external DC port, or the one-way conduction module is connected between a second end of the capacitor and a first end of the external DC port.

公开(公告)号：US11299041B2

公开(公告)日：2022-04-12

申请号：US16335843

申请日：2017-08-04

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Zhen Zhai ,  Fei Wu ,  Youbin Xu

IPC: B60K17/02 ,  B60K17/08 ,  B60K17/16 ,  B60K17/22 ,  B60K17/28

Abstract: A power-drive system for a vehicle and a vehicle. The power-drive system comprises: an engine; a plurality of input shafts; a plurality of output shafts; a first clutch device, arranged between the engine and the plurality of input shafts, so that the engine selectively engages with at least one of the plurality of input shafts; a motor power shaft, a motor power shaft first gear linking with a gear-position driving gear in the same direction being freely sleeved on the motor power shaft, and the plurality of output shafts and the motor power shaft linking with a differential of the vehicle; a first motor generator, configured to link with the motor power shaft; and a second motor generator, wherein the second motor generator and the engine are located on an input side of the first clutch device, the plurality of input shafts is located on an output side of the first clutch device, and the second motor generator is configured to carry out stationary power generation using at least part of power of the engine when the vehicle is parked.