公开(公告)号：EP4164082A1

公开(公告)日：2023-04-12

申请号：EP21818157.6

申请日：2021-06-04

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  LIU, Changjiu ,  LIU, Haijun ,  WU, Yunfeng

IPC: H02J7/00 ,  H01M10/615 ,  B60L53/00 ,  B60L53/24 ,  B60L58/27

Abstract: An energy conversion apparatus includes: a first switch module (10); a motor inverter (20), having a first bus terminal connected with a first end of a battery (70) and a second bus terminal connected with a second end of the battery, where the first switch module (10) controls the connection and disconnection between the first bus terminal and the first end of the battery (70); or the first switch module (10) controls the connection and disconnection between the second bus terminal and the second end of the battery; or the first switch module (10) controls the connection and disconnection between the first bus terminal and the first end of the battery (70) and the connection and disconnection between the second bus terminal and the second end of the battery; a motor winding (30), having a first end connected with a midpoint end of the motor inverter (20); and a second switch module (40) and a first capacitor (50) connected in series. A first end of the serial-connected second switch module (40) and the first capacitor (50) is connected with a second end of the motor winding (30). A second end of the serial-connected second switch module and the first capacitor is connected with the second bus terminal.

公开(公告)号：EP4163149A1

公开(公告)日：2023-04-12

申请号：EP21816937.3

申请日：2021-06-04

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  PAN, Hua ,  YAN, Lei ,  XIE, Feiyue

IPC: B60L58/27

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 element, 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：EP3902092A1

公开(公告)日：2021-10-27

申请号：EP19898038.5

申请日：2019-12-17

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  PAN, Hua ,  XIE, Feiyue ,  ZHANG, Lijun

IPC: H02J7/02 ,  H02J7/00 ,  B60L53/00

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 (102) 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 (104) by a power supply module (103) and the output of the three-phase motor (102) at a zero torque, and cause a three-phase inverter (101) and the three-phase motor (102) to heat a heat exchange medium flowing through at least one of the three-phase inverter (101) or the three-phase motor (102).

公开(公告)号：EP3900977A1

公开(公告)日：2021-10-27

申请号：EP19899570.6

申请日：2019-12-20

Applicant: BYD Company Limited

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

IPC: B60L58/27

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 is lower than a preset temperature value, and a heating condition of the power battery meets a preset condition, a three-phase inverter is controlled to cause a three-phase alternating current motor to generate heat according to heating energy, to heat a coolant flowing through the power battery, 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, so as to control, according to the preset direct-axis current and the preset quadrature-axis current, the three-phase inverter to adjust a phase current of the three-phase alternating current motor 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：EP3895933A1

公开(公告)日：2021-10-20

申请号：EP19901114.9

申请日：2019-12-20

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  PAN, Hua ,  ZHANG, Yuxin ,  CHEN, Hao

IPC: B60L58/27

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 is lower than a preset temperature value, and a heating condition of the power battery meets a preset condition, a three-phase inverter is controlled to cause a three-phase alternating current motor to generate heat according to heating energy to heat a coolant flowing through the power battery. 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, to control, according to the preset direct-axis current and the preset quadrature-axis current, the three-phase inverter to adjust a phase current of the three-phase alternating current motor in the heating process, so that electromagnetic torque with a relatively small torque value is outputted at a motor shaft. The electromagnetic torque cannot cause the vehicle to move, also cannot cause a damage to parts and components of a transmission mechanism of the vehicle. It only causes the motor output shaft to output a pre-tightening force to the transmission mechanism, thereby eliminating an engagement gap and effectively avoiding jitter of the vehicle.

公开(公告)号：EP3546796A1

公开(公告)日：2019-10-02

申请号：EP17887863.3

申请日：2017-12-15

Applicant: BYD Company Limited

Inventor： LING, Heping ,  ZHAI, Zhen ,  XU, Youbin ,  HUANG, Changan

IPC: F16H48/30

Abstract: The present invention discloses a differential mechanism and a vehicle. The differential mechanism includes: a shell, where a left half axle gear, a right half axle gear, a planet wheel and a planet wheel axle are disposed in the shell, the planet wheel is rotatably mounted on the planet wheel axle, and the planet wheel meshes with the left half axle gear and the right half axle gear; a power engagement device, where the power engagement device includes a first engagement portion and a second engagement portion, the first engagement portion is connected with the left half axle gear or the right half axle gear, and the second engagement portion rotates synchronously with the shell and may move axially relative to the shell; and an engagement portion drive device, where the engagement portion drive device includes: a drive pin and a drive portion, and the drive portion is configured to drive the drive pin to drive the second engagement portion to move close to the first engagement portion along an axial direction, thereby causing the second engagement portion to be engaged with the first engagement portion. Therefore, the differential mechanism is allowed to lock two half axles to improve the anti-stuck capacity of the vehicle.

公开(公告)号：EP3274227B1

公开(公告)日：2019-09-11

申请号：EP16767739.2

申请日：2016-03-21

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  LIU, Changjiu ,  LIU, Guorui ,  HUANG, Dongyue

IPC: B60W20/00 ,  B60W10/08 ,  B60W10/06 ,  B60W30/182 ,  B60W50/00 ,  B60W10/02 ,  B60W20/10 ,  F02N11/00

公开(公告)号：EP3533648A1

公开(公告)日：2019-09-04

申请号：EP17864924.0

申请日：2017-10-30

Applicant: BYD Company Limited

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

IPC: B60K6/44 ,  B60K6/547

Abstract: The present invention discloses a power transmission system and a vehicle having same. The power transmission system includes: a power source; a speed change unit, where the speed change unit is suitable for being selectively power-coupled to the power source; a first motor generator unit; a system power output portion; a first mode conversion device, where at least one of the speed change unit and the first motor generator unit is power-coupled to or power-decoupled from the system power output portion through the first mode conversion device; and a second mode conversion device, where the speed change unit can be power-coupled to or power-decoupled from the first mode conversion device through the second mode conversion device, and the speed change unit can be power-coupled to the first mode conversion device through the second mode conversion device, so that power from the power source is decelerated sequentially through the speed change unit and the second mode conversion device and then output to the first mode conversion device. In this way, driving modes of the vehicle may be enriched, the vehicle can adapt to different road conditions, and driving experience of a driver may be improved.

公开(公告)号：EP3511190A1

公开(公告)日：2019-07-17

申请号：EP17848054.7

申请日：2017-08-25

Applicant: BYD Company Limited

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

IPC: B60K31/00

Abstract: The present disclosure provides a hill descent system for a vehicle and a control method thereof. The hill descent system comprises: a plurality of wheels; a plurality of wheel speed sensors, corresponding to the plurality of wheels and used for detecting the speeds of the plurality of wheels; a plurality of motors, corresponding to the plurality of wheels and used for selectively driving or braking the plurality of wheels; a plurality of motor controllers, respectively connected to the plurality of motors and used for controlling the working states of the plurality of motors; a plurality of resolver sensors, corresponding to the plurality of motors and used for detecting the rotational speeds of the plurality of motors; and a vehicle control unit, respectively connected to the plurality of wheel speed sensors, the plurality of motor controllers and the plurality of resolver sensors, and used for determining the actual downhill speed of the vehicle based on the speeds of the plurality of wheels and the rotational speeds of the plurality of motors, and controlling the plurality of motor controllers according to the actual downhill speed of the vehicle to adjust the working states of the plurality of motors.

公开(公告)号：EP3354933A1

公开(公告)日：2018-08-01

申请号：EP16847984.8

申请日：2016-08-31

Applicant: BYD Company Limited

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

IPC: F16H48/06 ,  F16H57/08

CPC classification number: F16H48/11 ,  B60K1/02 ,  B60K6/365 ,  B60K6/48 ,  B60K6/52 ,  B60K17/354 ,  B60Y2200/92 ,  F16H3/006 ,  F16H37/0806 ,  F16H48/06 ,  F16H2048/104 ,  F16H2048/108 ,  F16H2200/0034 ,  F16H2200/0039 ,  Y10S903/91

Abstract: The present invention discloses a power-driven system and a vehicle. The power-driven system includes: a differential, where the differential includes a first planet carrier, a second planet carrier, a first planet gear, a second planet gear, a first ring gear, and a second ring gear, the first planet gear and the second planet gear being respectively disposed on the first planet carrier and the second planet carrier, the first planet gear and the second planet gear respectively meshing with the first ring gear and the second ring gear, and the second planet gear further meshing with the first planet gear; a power output shaft, where the power output shaft is configured to be linked to a power input end of the differential; multiple input shafts, where one input shaft in the multiple input shafts is configured to be selectively linked to the power output shaft, and the other input shaft in the multiple input shafts is configured to be linked to the power output shaft; and a first motor generator, where the first motor generator is configured to be linked to the one input shaft in the multiple input shafts.