公开(公告)号：EP3533676A1

公开(公告)日：2019-09-04

申请号：EP17865232.7

申请日：2017-10-30

Applicant: BYD Company Limited

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

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 first motor generator unit; a system power output portion; and a mode conversion device, where the mode conversion device includes: an input portion, a first conversion portion, a second conversion portion and an output portion, the output portion is connected to an input end of the system power output portion, the input portion is suitable for outputting power from at least one of the power source and the first motor generator unit, the input portion is selectively connected to one of the first conversion portion and the second conversion portion, and each of the first conversion portion and the second conversion portion cooperates with the output portion to perform transmission; and the input portion is connected to the second conversion portion, so that a rotational speed output by the input portion is reduced and then output to the input end of the system power output portion. In this way, driving modes of the vehicle may be enriched, and the vehicle can adapt to different road conditions.

公开(公告)号：EP3533647A1

公开(公告)日：2019-09-04

申请号：EP17865326.7

申请日：2017-10-30

Applicant: BYD Company Limited

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

IPC: B60K6/36 ,  B60K6/42 ,  B60K6/26 ,  B60K6/24

Abstract: The present invention discloses a power transmission system and a vehicle having same. The power transmission system includes: a power source; a first motor generator unit; a system power output portion; a first mode conversion device, where the power source and the first motor generator unit is connected to or disconnected from the system power output portion through the first mode conversion device; and a second mode conversion device, where the power source can be connected to or disconnected from the first mode conversion device through the second mode conversion device, the second mode conversion device includes a conversion device input shaft, a first conversion device intermediate shaft and a conversion device output shaft, and the conversion device output shaft is connected to the first motor generator unit; and power from the power source is suitable for being decelerated sequentially through the conversion device input shaft, the first conversion device intermediate shaft and the conversion device output shaft 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：EP3533645A1

公开(公告)日：2019-09-04

申请号：EP17864655.0

申请日：2017-10-30

Applicant: BYD Company Limited

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

IPC: B60K6/36 ,  B60K6/42 ,  B60K6/24 ,  B60K6/26

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; a first motor generator, where the first motor generator is power-coupled to the speed change unit; a speed change unit output portion, where the speed change unit output portion is constructed to be suitable for outputting power output through the speed change unit; a system power output portion; a mode conversion device, where the speed change unit output portion is power-coupled to or power-decoupled from the system power output portion through the mode conversion device, and the speed change unit output portion is power-coupled to the system power output portion through the mode conversion device, so that the mode conversion device is suitable for decelerating the power received from the speed change unit output portion and then outputting the decelerated power to the system power output portion; and a power switching device, where the speed change unit is power-coupled to or power-decoupled from the speed change unit output portion through the power switching device. In this way, driving modes of the vehicle may be enriched, and the vehicle can adapt to different road conditions.

公开(公告)号：EP3083356A1

公开(公告)日：2016-10-26

申请号：EP14870735.9

申请日：2014-12-16

Applicant: BYD Company Limited

Inventor： LIU, Changjiu ,  LIU, Guorui ,  ZHOU, Xiaowei ,  LING, Heping ,  XIE, Shibin ,  LIAN, Yubo

IPC: B60W20/00 ,  B60W10/06 ,  B60W10/08

CPC classification number: B60W20/15 ,  B60K6/48 ,  B60L11/16 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/113 ,  B60W20/00 ,  B60W20/40 ,  B60W2510/1095 ,  B60W2520/10 ,  B60W2520/105 ,  B60Y2300/49 ,  F02N5/04 ,  F02N11/00 ,  F02N2200/0801 ,  F02N2300/2002 ,  Y02T10/6221 ,  Y02T10/6286 ,  Y10S903/915 ,  Y10S903/946

Abstract: A method for starting an engine of a hybrid vehicle is provided. The method includes: detecting a speed of the hybrid vehicle when receiving an instruction to start the engine; and outputting an inertia torque generated by a transmission of the hybrid vehicle to a crankshaft of the engine to start the engine when the speed is larger than or equal to a predetermined speed. Further, a system for starting an engine of a hybrid vehicle and a hybrid vehicle including the system are provided.

公开(公告)号：EP4550525A1

公开(公告)日：2025-05-07

申请号：EP23845660.2

申请日：2023-07-27

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  HUANG, Wei ,  MA, Rui ,  QUE, Yansheng

IPC: H01M10/613 ,  H01M10/625 ,  H01M10/6556 ,  H01M10/6561 ,  H01M10/6567

Abstract: A heat exchange plate (2), a battery pack and a vehicle. The heat exchange plate (2) comprises a heat exchange area (203) and a battery area (204), the heat exchange area (203) being arranged around the battery area (204); and a flow channel (21), wherein the flow channel (21) is arranged in the heat exchange plate (2), and is configured to allow a heat exchange working medium to flow therein, a first flow channel (100) is located in the heat exchange area (203), and second flow channels (200, 300, 400) are distributed in the battery area (204).

公开(公告)号：EP4550524A1

公开(公告)日：2025-05-07

申请号：EP23845659.4

申请日：2023-07-27

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  HUANG, Wei ,  MA, Rui ,  QUE, Yansheng

IPC: H01M10/613 ,  H01M10/625 ,  H01M10/6556

Abstract: A heat exchange plate, a battery pack, and a vehicle. The heat exchange plate comprises a flow channel, a first terminal, and a second terminal; the flow channel is arranged in the heat exchange plate, and the flow channel is configured to allow a heat exchange working medium to flow therein; one end of the flow channel is communicated with the first terminal, another end of the flow channel is communicated with the second terminal, and the first terminal and the second terminal are configured to allow the heat exchange working medium to enter the heat exchange plate; the heat exchange plate comprises a first-type region, and the first-type region is configured to be arranged corresponding to a battery pole region; the flow channel comprises flow-dividing junctions; the flow-dividing junctions comprise first-stage flow-dividing junctions; at least one first-stage flow-dividing junction is arranged in the first-type region; the first-stage flow-dividing junction is arranged close to the first terminal or the second terminal; and the flow-dividing junction divide the flow channel.

公开(公告)号：EP4527670A1

公开(公告)日：2025-03-26

申请号：EP23807005.6

申请日：2023-05-17

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  SHI, Mingchuan ,  ZHANG, Hao ,  LI, Pengxiang

IPC: B60L15/20

Abstract: A vehicle torque control method. The method comprises: step S1, obtaining steering wheel angle and vehicle steering speed parameters; step S2, determining the current driving state of a vehicle according to the steering wheel angle and vehicle steering speed parameters; and step S3, controlling output torques of front and rear drivers of the vehicle according to the current driving state of the vehicle. Further disclosed are a processing apparatus, a vehicle, and a storage medium. The method determines the current driving state of the vehicle by means of a steering wheel angle and a vehicle steering speed, such that the determination accuracy is higher, and the torques of the drivers can be better accurately controlled according to the driving state, thereby improving the stability of the vehicle in the driving process.

公开(公告)号：EP4527669A1

公开(公告)日：2025-03-26

申请号：EP23806990.0

申请日：2023-05-17

Applicant: BYD Company Limited

Inventor： LING, Heping ,  SHI, Mingchuan ,  LI, Pengxiang ,  YIN, Chao ,  ZHOU, Guixin

IPC: B60L15/20 ,  B60W30/18

Abstract: A vehicle trackslip identification method, a vehicle trackslip processing apparatus, and a vehicle. The vehicle trackslip identification method comprises: acquiring the rotating speeds of two drive motors of a vehicle, wherein the higher rotating speed is a first rotating speed, the corresponding angular acceleration is a first angular acceleration, the lower rotating speed is a second rotating speed, and the corresponding angular acceleration is a second angular acceleration; and if the first angular acceleration is greater than 0, at least according to the first rotating speed, the second rotating speed, the first angular acceleration and the second angular acceleration, determining the trackslip trend of the drive motor corresponding to the first rotating speed. The driving state of a vehicle is identified by means of a rotating speed and an angular acceleration of an electric motor, making the real-time performance and accuracy of determination higher.

公开(公告)号：EP4521613A2

公开(公告)日：2025-03-12

申请号：EP25153968.0

申请日：2021-09-29

Applicant: BYD Company Limited

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

IPC: H02K9/19

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：EP4517933A1

公开(公告)日：2025-03-05

申请号：EP23794930.0

申请日：2023-03-29

Applicant: BYD Company Limited

Inventor： LIAN, Yubo ,  LING, Heping ,  YAN, Lei ,  SONG, Gan ,  GAO, Wen

IPC: H01M10/615 ,  H01M10/625 ,  H02J7/00

Abstract: A battery self-heating device, comprising: a bridge arm converter (3), an energy storage element (5), an inductor (4) and a controller. The controller is configured to control, in a preset state, the connection and disconnection of the bridge arm converter (3), such that a first power battery (1) and a second power battery (2) are respectively charged/discharged by means of the inductor (4), and each form a freewheeling circuit by means of the energy storage element (5), so as to realize the continuous heating of the first power battery (1) and the second power battery (2). Further disclosed are a self-heating method executed by the device, and a vehicle having the device. Two power batteries are provided, and an energy storage element (5) is provided for freewheeling, such that an oscillation current can be generated between each of the two power batteries and an inductor (4), so as to realize low-cost and high-efficient battery self-heating, and the stability of the total voltage of the two power batteries and the continuous flow of current in the batteries can also be ensured, thereby ensuring the safety of the batteries during the self-heating process.