公开(公告)号：US20190168600A1

公开(公告)日：2019-06-06

申请号：US16313982

申请日：2017-05-11

Applicant: BYD COMPANY LIMITED

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

IPC: B60K6/36 ,  B60K6/40 ,  B60K6/387 ,  B60K6/547 ,  F16H48/22 ,  F16H48/24 ,  F16H3/00 ,  F16H3/093 ,  F16H37/08

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：US20250046904A1

公开(公告)日：2025-02-06

申请号：US18924851

申请日：2024-10-23

Applicant: BYD COMPANY LIMITED

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

IPC: H01M10/615 ,  H01M10/625 ,  H01M10/637

Abstract: A battery heating system includes: a power battery pack including a first battery assembly and a second battery assembly connected to each other at a connection point, buck-boost inverters connected in parallel to form a first bus terminal and a second bus terminal, and a controller connected to a control terminal of the inverter bridge and configured to control self-heating of the first battery assembly and the second battery assembly. A center line is led out at the connection point. Each buck-boost inverters includes an inverter bridge and an inductor. The first bus terminal is connected to a positive electrode of the power battery pack. The second bus terminal is connected to a negative electrode of the power battery pack. A first terminal of the inductor is connected to a midpoint of the inverter bridge. A second terminal of the inductor is connected to the center line.

公开(公告)号：US20240375547A1

公开(公告)日：2024-11-14

申请号：US18782925

申请日：2024-07-24

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Gan SONG ,  Lei YAN ,  Yong XIONG

IPC: B60L58/25 ,  B60H1/00 ,  B60H1/32 ,  B60L58/26 ,  B60L58/27 ,  H01M10/613 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  H01M10/663 ,  H02M7/5387 ,  H02P27/00

Abstract: An integrated heat management system includes: a heat pump subsystem, configured to exchange heat with a passenger compartment and a battery of a vehicle; a high-pressure cooling subsystem, configured to exchange heat with a high-pressure system of the vehicle and the heat pump subsystem; a battery self-heating subsystem, configured to heat the battery through charging and discharging; an air heating subsystem, configured to exchange heat with the passenger compartment; the heat pump subsystem including a compressor and a control valve, one end of the control valve being in communication with an exhaust port of the compressor, and an other end of the control valve being in communication with an air return port of the compressor directly or through a gas-liquid separator; and a control subsystem, configured to control the control valve to be in communication with the exhaust port and the air return port of the compressor.

公开(公告)号：US20240042868A1

公开(公告)日：2024-02-08

申请号：US18382261

申请日：2023-10-20

Applicant: BYD COMPANY LIMITED

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

IPC: B60L15/20

CPC classification number: B60L15/20 ,  B60L2240/425 ,  B60L2240/423

Abstract: A method for controlling an electric drive system, includes: determining that the vehicle is in a traveling condition; obtaining a rotation speed value, a shaft end torque value, a present direct axis current value, and a present quadrature axis current value of the motor when receiving a vehicle heat-up demand signal; determining a target torque curve according to the shaft end torque value, and determining a target traveling heating calibration curve according to the vehicle heat-up demand signal and the rotation speed value; determining an intersection of the target torque curve and the target traveling heating calibration curve as a target traveling condition point; determining a target quadrature axis current value and a target direct axis current value according to the target traveling condition point; and controlling, according to the target direct axis current value and the target quadrature axis current value, the motor to operate.

公开(公告)号：US20230241954A1

公开(公告)日：2023-08-03

申请号：US18128666

申请日：2023-03-30

Applicant: BYD COMPANY LIMITED

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

IPC: B60K1/00 ,  B60K17/04 ,  B60L15/20 ,  B60L50/60 ,  H02K3/50 ,  H02K5/20 ,  H02K7/116 ,  H02K9/19 ,  H02K11/00 ,  H02K11/33 ,  H02J7/00

CPC classification number: B60K1/00 ,  B60K17/04 ,  B60L15/20 ,  B60L50/60 ,  H02K3/50 ,  H02K5/203 ,  H02K7/116 ,  H02K9/19 ,  H02K11/0094 ,  H02K11/33 ,  H02J7/0042 ,  H02K2203/09 ,  H02K2211/03

Abstract: A drive system includes a motor, a speed reducer, a controller, and a housing. The housing includes: a first accommodation space for accommodating the controller; a second accommodation space configured for accommodating the motor; and a third accommodation space configured for accommodating the speed reducer. The controller is connected with the motor, and an output shaft of the motor is connected with the speed reducer. In a length direction of the output shaft, an absolute value of a difference between a mounting width and a width of the first accommodation space is no greater than a first difference threshold. In a direction perpendicular to the length direction of the output shaft and parallel to a horizontal plane, an absolute value of a difference between a length of the first accommodation space and a length of the third accommodation space is no greater than a second difference threshold.

公开(公告)号：US20230097027A1

公开(公告)日：2023-03-30

申请号：US18074448

申请日：2022-12-02

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Lei YAN ,  Yong XIONG ,  Wen GAO

IPC: H01M10/63 ,  H01M10/615 ,  H01M10/44 ,  H02M7/483

Abstract: The present disclosure belongs to the field of vehicles, and relates to a battery energy processing device and method and a vehicle, which can charge batteries during self-heating of the batteries. The battery energy processing device includes: an energy exchange interface; a first circuit, wherein a first end of the first circuit is connected with the energy exchange interface, and a second end of the first circuit is connected with a battery; a second circuit, wherein a first end of the second circuit is connected with the battery; an energy storage device, connected with a second end of the second circuit; and a controller, configured to: in a first preset state, control the second circuit to charge and discharge the battery to heat the battery, and control the first circuit to receive energy from the energy exchange interface and output the energy to the battery to charge the battery.

公开(公告)号：US20220077518A1

公开(公告)日：2022-03-10

申请号：US17416781

申请日：2019-12-20

Applicant: BYD COMPANY LIMITED

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

IPC: H01M10/615 ,  H02J7/00 ,  B60L58/27 ,  H01M10/48 ,  H01M10/613 ,  H01M10/625 ,  H01M10/635 ,  H01M10/6567 ,  H01M10/663

Abstract: The present disclosure 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：US20200031357A1

公开(公告)日：2020-01-30

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: B60W40/076 ,  B60W30/18 ,  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：US20190308495A1

公开(公告)日：2019-10-10

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 ,  B60K17/02 ,  B60K17/08 ,  B60K17/16 ,  B60K17/28 ,  B60K6/24 ,  B60K6/36 ,  B60K6/42

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：US20190291567A1

公开(公告)日：2019-09-26

申请号：US16346514

申请日：2017-10-30

Applicant: BYD COMPANY LIMITED

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

IPC: B60K6/48 ,  B60K6/36 ,  F16H3/00 ,  F16H3/085

Abstract: A power transmission system includes: a power source; a first motor generator unit; a system power output portion; a first and a second mode conversion devices. 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. 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.