公开(公告)号：EP3476635A1

公开(公告)日：2019-05-01

申请号：EP17818958.5

申请日：2017-05-11

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  ZHAI, Zhen ,  XU, Youbin

IPC: B60K6/36 ,  B60K17/08 ,  B60K17/16

Abstract: The present disclosure discloses a power drive system and a vehicle, the power drive system including: an engine; a transmission having a transmission power output portion; a first electric generator, the engine and the first electric generator being connected through the transmission by means of power coupling; and a differential having a differential power input portion and two differential power output portions, the differential power input portion being linked with the transmission power output portion, each of the differential power output portions being connected with a wheel on the same side, and a power engagement device being provided between one of the differential power output portions and the wheel on the same side.

公开(公告)号：EP3348444A1

公开(公告)日：2018-07-18

申请号：EP16834666.6

申请日：2016-08-10

Applicant: BYD Company Limited

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

IPC: B60T8/1755 ,  B60W30/04

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.

公开(公告)号：EP4516579A1

公开(公告)日：2025-03-05

申请号：EP23794916.9

申请日：2023-03-28

Applicant: BYD Company Limited

Inventor： LING, Heping ,  YAN, Lei ,  GAO, Wen ,  XIE, Jinyue

IPC: B60L58/18 ,  B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/637 ,  H01M10/657 ,  H02J7/00 ,  H01M10/42

Abstract: A battery heating system (10) and an electric vehicle (1000). The system (10) comprises: a power battery pack comprising a first battery pack (1) and a second battery pack (2) connected in series, a center line being led out at a series connection point (A) of the first battery pack (1) and the second battery pack (2); n buck-boost inverters (3), each comprising an inverter bridge and an inductor, wherein the n inverter bridges are connected in parallel to form a first bus terminal (B) and a second bus terminal (C) the first bus terminal (B) and the second bus terminal (C) are correspondingly connected to positive and negative electrodes of the power battery pack, one end of the inductor is connected to a midpoint of the corresponding inverter bridge, and the other end of the inductor is connected to the center line, n being an integer greater than 1; and a controller (100) connected to the control end of the inverter bridge, and configured to perform out-of-phase control on the n buck-boost inverters (3), so as to realize simultaneous self-heating of the first battery pack (1) and the second battery pack (2).

公开(公告)号：EP4442481A3

公开(公告)日：2025-01-15

申请号：EP24193741.6

申请日：2019-10-25

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  ZHAI, Zhen

IPC: B60K6/36 ,  B60K6/547 ,  B60K6/38

Abstract: A hybrid power-driven system and a vehicle are provided. The hybrid power-driven system includes an engine, a transmission, and a motor power apparatus. The transmission includes a transmission mechanism and a main reducer. The motor power apparatus includes a motor and a power distribution mechanism. The power distribution mechanism includes a power distribution shaft, a mode selection apparatus, a first transmission apparatus, and a second transmission apparatus. The power distribution shaft is disposed independently from the transmission mechanism, and the power distribution shaft is disposed independently from the motor. A motor driven gear configured to receive power of the motor is disposed on the power distribution shaft.

公开(公告)号：EP4415255A3

公开(公告)日：2024-11-20

申请号：EP24185479.3

申请日：2019-12-20

Applicant: BYD Company Limited

Inventor： LING, Heping ,  PAN, Hua ,  ZHANG, Yuxin ,  TIAN, Guo ,  XIE, Zhao

IPC: B60L58/27 ,  B60L15/02 ,  B60L15/20 ,  H02P21/00 ,  H01M10/615 ,  B60L58/34 ,  H01M10/625 ,  H01M10/633 ,  H01M10/6568 ,  H01M10/667 ,  H01M10/48 ,  H02P25/20 ,  H02P29/024 ,  H02P29/62 ,  H02P29/66

Abstract: This application provides a vehicle and a power battery heating apparatus and method thereof. In the power battery heating method, when a current temperature value of a power battery (20) is lower than a preset temperature value, and a heating condition of the power battery (20) meets a preset condition, a three-phase inverter (11) is controlled to cause a three-phase alternating current motor (12) to generate heat according to heating energy, to heat a coolant flowing through the power battery (20), a preset quadrature-axis current that causes a torque value outputted by the motor to be an appropriate value is obtained, and a corresponding preset direct-axis current is obtained according to heating power of the power battery (20), so as to control, according to the preset direct-axis current and the preset quadrature-axis current, the three-phase inverter (11) to adjust a phase current of the three-phase alternating current motor (12) in the heating process, where a direction of the preset direct-axis current changes periodically in the heating process, thereby making quantities of times of switching-on and switching-off of an upper leg and a lower leg of power switching devices of the same phase equal, and service life of devices balanced.

公开(公告)号：EP4442481A2

公开(公告)日：2024-10-09

申请号：EP24193741.6

申请日：2019-10-25

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  ZHAI, Zhen

IPC: B60K6/38

CPC classification number: B60K6/36 ,  B60K6/547 ,  Y02T10/62 ,  B60K6/40 ,  B60K6/48 ,  B60K6/387 ,  B60K2006/480820130101 ,  B60K2006/482520130101 ,  B60K2006/483320130101

Abstract: A hybrid power-driven system and a vehicle are provided. The hybrid power-driven system includes an engine, a transmission, and a motor power apparatus. The transmission includes a transmission mechanism and a main reducer. The motor power apparatus includes a motor and a power distribution mechanism. The power distribution mechanism includes a power distribution shaft, a mode selection apparatus, a first transmission apparatus, and a second transmission apparatus. The power distribution shaft is disposed independently from the transmission mechanism, and the power distribution shaft is disposed independently from the motor. A motor driven gear configured to receive power of the motor is disposed on the power distribution shaft.

公开(公告)号：EP4434786A1

公开(公告)日：2024-09-25

申请号：EP23778444.2

申请日：2023-03-31

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  YI, Bengang ,  LING, Heping ,  YAN, Junfei ,  LIU, Tengyong

IPC: B60K1/04 ,  B60L50/60

CPC classification number: Y02T10/70

Abstract: A vehicle is provided. The vehicle includes: an underbody, a front subframe, and a battery pack. The front subframe is connected to the underbody. The battery pack is connected to the underbody, and is arranged on a lower side of the underbody. A rear end surface of the front subframe forms a limiting surface for forward extension of the battery pack, and at least a part of an upper surface of the battery pack forms a floor of a vehicle body.

公开(公告)号：EP4254744A1

公开(公告)日：2023-10-04

申请号：EP22778986.4

申请日：2022-03-30

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  ZHAI, Zhen ,  ZHAO, Linlin ,  LIU, Linna

IPC: H02K9/19 ,  H02K7/116 ,  F16H57/04 ,  B60K11/02 ,  B60K1/00

Abstract: Disclosed are a motor system and a vehicle having the same. The motor system includes: a motor (2), including: a motor housing (22), a stator core (23), a stator winding (24) and a rotor core (26), the stator core (23) being mounted in the motor housing (22), the stator winding (24) being wound around the stator core (23), the rotor core (26) being rotatably arranged relative to the stator core (23), the rotor flow path being formed at least in the rotor core (26), the rotor flow path being adapted to transport the coolant to the stator winding (24); and a valve (6) configured to control the flow of the rotor flow path.

公开(公告)号：EP4253125A1

公开(公告)日：2023-10-04

申请号：EP21934472.8

申请日：2021-10-19

Applicant: BYD Company Limited

Inventor： LING, Heping ,  PAN, Hua ,  ZHANG, Yuxin ,  QIU, Guowei ,  HONG, Chen

IPC: B60L15/20

Abstract: The present invention relates to the technical field of vehicles, and provides a control method for an electric drive system of a vehicle, an electric drive system, and a vehicle. The method includes: acquiring a current heat generation power of an electric drive system according to a current operating point of a vehicle; determining a current adjustment amplitude according to a required heating power of the vehicle and the current heat generation power; acquiring a current direct axis current value and a current quadrature axis current value of the electric motor at the current operating point of the vehicle according to a three-phase current value and a position value of the electric motor; controlling the current direct axis current value to oscillate at a preset change frequency and the current adjustment amplitude and taking the current value as a target direct axis current value; and acquiring a target quadrature axis current value according to the target direct axis current value and the shaft torque of the electric motor; acquiring an electric motor drive signal according to the target direct axis current value, the target quadrature axis current value, the current direct axis current value, and the current quadrature axis current value; and sending the electric motor drive signal to an electric motor controller, to control the operation of the electric motor.

公开(公告)号：EP4224183A1

公开(公告)日：2023-08-09

申请号：EP21874313.6

申请日：2021-09-22

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  CHEN, Siliang ,  WANG, Zhengzheng ,  LI, Junzi

IPC: G01R31/387

Abstract: A method and a device for acquiring a battery capacity, a storage medium, and a server are provided. The method includes: acquiring multiple initial charging parameters when a current charging process of a vehicle battery is effective charging, where the effective charging means that the range of variation in state of charge (SOC) of the battery covers a preset SOC range, and the minimum charging temperature of the battery is greater than or equal to a preset temperature threshold; periodically acquiring multiple actual charging parameters of the battery and a current number of effective charging times corresponding to the current charging process; and acquiring, according to the multiple initial charging parameters, the multiple actual charging parameters and the current number of effective charging times, a predicted battery capacity of the battery in a next effective charging process.