公开(公告)号：EP4438363A1

公开(公告)日：2024-10-02

申请号：EP23778436.8

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, including an underbody, a rear subframe, and a battery pack. The rear 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 front end surface of the rear subframe forms a limiting surface for the battery pack to extend backward, 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：EP4333175A1

公开(公告)日：2024-03-06

申请号：EP22852304.9

申请日：2022-08-04

Applicant: BYD Company Limited

Inventor： YI, Bengang ,  YAN, Junfei ,  DIAO, Yiwei ,  LIAN, Yubo ,  LING, Heping

IPC: H01M50/204

Abstract: A battery pack, a vehicle body, and a vehicle are provided. The battery pack includes a cover plate, a battery core, and a cooling plate from top to bottom. The cooling plate is used as a bottom plate of the battery pack to seal the battery pack. The battery core is adhered to the cover plate, and a weight of the battery core is carried by the cover plate. Therefore, the cooling plate is not damaged by carrying the battery core, so that the cooling plate can not only implement thermal management of the battery core, but also seal the battery pack, to implement integration. The cover plate of the battery pack is formed as a vehicle body floor. On one hand, a quantity of parts is reduced, and the production costs and a weight of the whole vehicle are reduced. On the other hand, a height from the ground of the battery pack is larger, an arrangement space of the battery pack is larger, and a damage probability of the battery pack can be reduced.

公开(公告)号：EP4299360A1

公开(公告)日：2024-01-03

申请号：EP21938885.7

申请日：2021-10-19

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  PAN, Hua ,  ZHANG, Yuxin ,  XIE, Zhao

IPC: B60L15/20

Abstract: Provided are an electric drive system control method, an electric drive system, and a vehicle, relating to the technical field of vehicles. The method includes the following steps. That the vehicle is in a traveling condition is determined according to a vehicle state parameter. In response to a vehicle heat-up demand signal, a rotation speed value, a shaft end torque value, a present direct axis current value, and a present quadrature axis current value of a motor are obtained. A target torque curve is determined according to the shaft end torque value. A target traveling heating calibration curve is determined according to the vehicle heat-up demand and the rotation speed value. An intersection of the target torque curve and the target traveling heating calibration curve is used as a target traveling condition point. A target quadrature axis current value and a target direct axis current value are determined according to the target traveling condition point. A synthetic current vector amplitude value of the target quadrature axis current value and the target direct axis current value is greater than a synthetic current vector amplitude value of the present quadrature axis current value and the present direct axis current value. According to the target direct axis current value and the target quadrature axis current value, the motor is controlled to operate.

公开(公告)号：EP4206012A1

公开(公告)日：2023-07-05

申请号：EP21874547.9

申请日：2021-09-29

Applicant: BYD Company Limited

Inventor： LING, Heping ,  ZHAI, Zhen ,  HU, Lei ,  XIONG, Yuchao

IPC: B60K1/00

Abstract: An integrated electric drive system and an electric vehicle are provided. The integrated electric drive system includes a motor (1), a speed reducer (2), a controller (3), and a single-piece enclosure (4). A first enclosure space (41) is formed on the single-piece enclosure (4), and a second enclosure space (42) and a third enclosure space (43) configured for the speed reducer (2) to be mounted are arranged on the single-piece enclosure (4). The motor controller (3) is connected with the motor (1). An output shaft (23) of the motor (1) is connected with the speed reducer (2). An absolute value of a difference between a preset mounting width value and a width value of the first enclosure space (41) is less than or equal to a first difference threshold. An absolute value of a difference between a length value of the first enclosure space (41) and a length value of the third enclosure space (43) is less than or equal to a second difference threshold.

公开(公告)号：EP4151459A1

公开(公告)日：2023-03-22

申请号：EP21818738.3

申请日：2021-05-18

Applicant: BYD Company Limited

Inventor： LING, Heping ,  YAN, Lei ,  XIONG, Yong ,  HONG, Chen ,  ZHANG, Junwei

IPC: B60L58/27 ,  B60L53/24 ,  H01M10/615 ,  H01M10/625

Abstract: An energy conversion device is provided, including: a first electrical motor control circuit (101), where the first electrical motor control circuit (101) is connected with a battery pack (104); a second electrical motor control circuit (102), where the second electrical motor control circuit (102) is connected with the first electrical motor control circuit (101) in parallel; and a controller, configured to: when operating in a first control mode, control the first electrical motor control circuit (101) to charge and discharge the battery pack (104) to heat the battery pack (104), and control the second electrical motor control circuit (102) to output torque.

公开(公告)号：EP4043254A1

公开(公告)日：2022-08-17

申请号：EP20867338.4

申请日：2020-08-18

Applicant: BYD Company Limited

Inventor： LING, Heping ,  LI, Jicheng ,  LIU, Changjiu ,  XIE, Feiyue ,  ZHANG, Yuxin

IPC: B60H1/02 ,  B60L15/20 ,  B60L58/27

Abstract: An energy conversion device is provided. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier (102) and a motor coil (103). The motor coil (103) includes L sets of winding units, and each set of windings is connected with the reversible PWM rectifier (102), where L≥2 and is a positive integer. At least two sets of heating circuits of a to-be-heated device are formed by an external power supply (100), the reversible PWM rectifier (102), and the winding units in the motor coil (103). The energy conversion device controls the reversible PWM rectifier (102) according to a control signal, so that a current outputted from the external power supply (100) flows through at least two sets of winding units in the motor coil (103) to generate heat, and a vector sum of resultant current vectors of the at least two sets of the winding units on a quadrature axis of a synchronous rotating reference frame based on rotor field orientation of the motor is zero.

公开(公告)号：EP3868587A1

公开(公告)日：2021-08-25

申请号：EP19876934.1

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：EP3533677A1

公开(公告)日：2019-09-04

申请号：EP17865799.5

申请日：2017-10-30

Applicant: BYD Company Limited

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

IPC: B60W20/00

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 selectively power-coupled to the power source; a first motor generator unit; a system power output portion; and a mode conversion device, where the mode conversion device includes: a conversion device input portion and a conversion device output portion, the conversion device input portion outputs power from at least one of the power source and the first motor generator unit, the conversion device output portion is connected to an input end of the system power output portion, and the conversion device input portion is selectively power-coupled to the conversion device output portion; and when the conversion device input portion is power-coupled to the conversion device output portion, the rotational speed of the conversion device input portion is greater than or equal to the rotational speed of the conversion device output portion. 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：EP3521086A1

公开(公告)日：2019-08-07

申请号：EP17854576.0

申请日：2017-08-04

Applicant: BYD Company Limited

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

IPC: B60K6/54 ,  B60K6/44 ,  B60K6/36

Abstract: The present disclosure discloses a power-driven system for a vehicle and a vehicle. The power-driven 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.

公开(公告)号：EP3521083A1

公开(公告)日：2019-08-07

申请号：EP17854577.8

申请日：2017-08-04

Applicant: BYD Company Limited

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

IPC: B60K6/36 ,  B60K17/28

Abstract: The present disclosure provides a power-driven system for a vehicle and a vehicle. The power-driven 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.