公开(公告)号：US20250018799A1

公开(公告)日：2025-01-16

申请号：US18901427

申请日：2024-09-30

Applicant: BYD COMPANY LIMITED

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

IPC: B60L3/10

Abstract: A method includes: acquiring a first rotating speed of a first drive motor of a vehicle and a second rotating speed of a second drive motor of the vehicle, where when the first rotating speed is higher than the second rotating speed, an angular acceleration corresponding to the first rotating speed is a first angular acceleration, and an angular acceleration corresponding to the second rotating speed is a second angular acceleration; and determining, in response to that the first angular acceleration is greater than 0, a trackslip trend of the first drive motor according to at least the first rotating speed, the second rotating speed, the first angular acceleration, and the second angular acceleration.

公开(公告)号：US20240367499A1

公开(公告)日：2024-11-07

申请号：US18775631

申请日：2024-07-17

Applicant: BYD COMPANY LIMITED

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

IPC: B60K1/04 ,  B62D21/03 ,  B62D25/02 ,  H01M50/204 ,  H01M50/242 ,  H01M50/249

Abstract: A vehicle includes 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 disposed on a lower side of the underbody. A front end surface of the rear subframe includes 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 portion of at least a portion of a floor of a vehicle body.

公开(公告)号：US20240116387A1

公开(公告)日：2024-04-11

申请号：US18540188

申请日：2023-12-14

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Junhua LIU ,  Fengjun AN ,  Qi WEN

IPC: B60L53/62 ,  B60L53/30 ,  B60L53/66

CPC classification number: B60L53/62 ,  B60L53/305 ,  B60L53/66 ,  B60L2210/12 ,  B60L2210/14

Abstract: A charging method includes: obtaining a first voltage of a charging port of a vehicle; determining a target buck value based on the first voltage, adjusting a voltage on a buck side of a buck-boost converter of the vehicle based on the target buck value, and sending the target buck value to a charging pile to enable the charging pile to determine an output voltage of the charging pile based on the target buck value; increasing a charging demand current of the vehicle to a maximum allowable charging current of the vehicle; and charging the vehicle according to the maximum allowable charging current.

公开(公告)号：US20230344375A1

公开(公告)日：2023-10-26

申请号：US18215725

申请日：2023-06-28

Applicant: BYD COMPANY LIMITED

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

IPC: H02P21/22 ,  H02P21/14 ,  H02P29/62 ,  B60H1/14

CPC classification number: H02P21/22 ,  H02P21/14 ,  H02P29/62 ,  B60H1/143 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2240/429 ,  B60L2240/427 ,  B60L15/20

Abstract: A control method for an electric drive system of a vehicle, includes: acquiring a shaft torque of the electric motor and a present operating point of the vehicle in response to a vehicle heating demand signal; acquiring a present heat generation power of the electric drive system accordingly; determining a current adjustment amplitude accordingly; acquiring a three-phase current value and a position value of the electric motor, and a present direct axis current value and a present quadrature axis current value of the electric motor at the present operating point accordingly; controlling the present direct axis current value to oscillate at a change frequency and the current adjustment amplitude to obtain a target direct axis current value; acquiring a target quadrature axis current value accordingly; acquiring an electric motor drive signal accordingly.

公开(公告)号：US20230344313A1

公开(公告)日：2023-10-26

申请号：US18215719

申请日：2023-06-28

Applicant: BYD COMPANY LIMITED

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

IPC: H02K9/193 ,  H02K7/00

CPC classification number: H02K9/193 ,  H02K7/003 ,  H02K7/006 ,  H02K2209/00

Abstract: A motor system includes: a motor including: a motor housing, a stator core, a stator winding, and a rotor core, the stator core mounted in the motor housing, the stator winding wound around the stator core, the rotor core rotatably disposed with respect to the stator core, a rotor flow path formed at least in the rotor core, the rotor flow path configured to transport coolant to the stator winding; and a valve configured to control a flow of the rotor flow path.

公开(公告)号：US20230268862A1

公开(公告)日：2023-08-24

申请号：US18008056

申请日：2021-06-04

Applicant: BYD COMPANY LIMITED

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

IPC: H02P27/08 ,  H02J7/34 ,  H02M1/32 ,  H02M7/5387 ,  H01M10/42 ,  H01M10/46

CPC classification number: H02P27/08 ,  H01M10/46 ,  H01M10/4264 ,  H02J7/345 ,  H02M1/32 ,  H02M7/5387 ,  B60R16/03 ,  H02J2207/20

Abstract: An energy conversion apparatus includes: a first switch module, a motor inverter having a first bus terminal connected with a first end of a battery and a second bus terminal connected with a second end of the battery through the first switch module, a motor winding having a first end connected with a midpoint end of the motor inverter, and a second switch module and a first capacitor connected in series. A first end of the serial-connected second switch module and the first capacitor is connected with a second end of the motor winding. 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：US20230264553A1

公开(公告)日：2023-08-24

申请号：US18141044

申请日：2023-04-28

Applicant: BYD COMPANY LIMITED

Inventor： Heping LING ,  Zhen ZHAI ,  Linna LIU ,  Yun LIANG ,  Yuchao XIONG

IPC: B60K1/00 ,  H02K9/193 ,  H02K5/20

CPC classification number: B60K1/00 ,  H02K9/193 ,  H02K5/203 ,  B60K2001/006

Abstract: A cooling structure for a drive system, includes a motor assembly. The motor assembly includes a rotary shaft and a cooling tube having an inner hole. The rotary shaft includes a mounting hole for receiving the cooling tube. An annular water channel is formed between an outer wall of the cooling tube and an inner wall of the mounting hole. The inner hole and the annular water channel form a rotor cooling water channel.

公开(公告)号：US20220097567A1

公开(公告)日：2022-03-31

申请号：US17298348

申请日：2019-11-27

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Gang WANG ,  Shuzhou CAI ,  Gan SONG

IPC: B60L58/27 ,  B60H1/00 ,  B60H1/22 ,  B60H1/32 ,  H01M10/615 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6568 ,  H01M10/66

Abstract: The present disclosure relates to a vehicle thermal management system, a control method thereof, and a vehicle using same. The vehicle thermal management system includes a battery and electric drive thermal management system. The battery and electric drive thermal management system includes a first coolant flow path, a second coolant flow path, and a four-way valve. A heat exchanger, a power battery, and a first pump are disposed on the first coolant flow path. The first coolant flow path has one end connected to a first port of the four-way valve and another end connected to a second port of the four-way valve. A motor, a radiator, and a second pump are disposed on the second coolant flow path. The second coolant flow path has one end connected to a third port of the four-way valve and another end connected to a fourth port of the four-way valve.

公开(公告)号：US20190299992A1

公开(公告)日：2019-10-03

申请号：US16346523

申请日：2017-10-30

Applicant: BYD COMPANY LIMITED

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

IPC: B60W30/182 ,  F16H37/08 ,  F16H3/72

Abstract: A power transmission system for a vehicle includes: a power source; a first motor generator unit; a speed change unit, where the speed change unit is suitable for being selectively power-coupled to the power source, the speed change unit includes a speed change unit output portion, and the speed change unit output portion is suitable for outputting power from at least one of the power source and the first motor generator unit; a system power output portion; and 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, 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.

公开(公告)号：US20190291568A1

公开(公告)日：2019-09-26

申请号：US16346521

申请日：2017-10-30

Applicant: BYD COMPANY LIMITED

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

IPC: B60K6/48 ,  F16H3/00 ,  F16H3/085 ,  F16H37/06 ,  B60K6/365

Abstract: A 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.