公开(公告)号：US20250080031A1

公开(公告)日：2025-03-06

申请号：US18950512

申请日：2024-11-18

Applicant: BYD COMPANY LIMITED

Inventor： Yilong YU ,  Luhui XU ,  Zhiyong DU ,  Axi QI ,  Guangming YANG

IPC: H02P29/028 ,  B60L3/00

Abstract: The present disclosure provides an electric motor control system and a vehicle. The electric motor control system includes a motor drive module, a multi-core processing module, and a safety logic module. The multi-core processing module includes a main function core and a lockstep monitoring core. The main function core is configured to obtain sampling data, and when any one of the sampling data, a running status of the main function core, a motor control signal, and a running status of a motor is abnormal, the lockstep monitoring core outputs a safety trigger signal; and the safety logic module is configured to output an instruction for prohibiting execution of the motor control signal to the motor drive module when receiving the safety trigger signal.

公开(公告)号：US20220410718A1

公开(公告)日：2022-12-29

申请号：US17896853

申请日：2022-08-26

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Yilong YU ,  Zhiyong DU ,  Axi QI ,  Guangming YANG

IPC: B60L3/00 ,  B60L15/20 ,  H02H7/08 ,  H02P6/08

Abstract: A motor control system and a vehicle. The motor control system includes: a vehicle control unit, configured to obtain vehicle state data and output an instruction for cutting off motor output torque when determining an unexpected power transmission failure according to the vehicle state data; and a motor controller unit, connected to the vehicle control unit, and configured to stop outputting motor control torque in response to the instruction for cutting off motor output torque.

公开(公告)号：US20220360183A1

公开(公告)日：2022-11-10

申请号：US17622188

申请日：2020-06-18

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Zhiyong DU ,  Jiawei WAN ,  Caiwen LI

IPC: H02M3/335

Abstract: An energy conversion apparatus, a power system, and a vehicle are provided. The energy conversion apparatus includes a motor coil (11) and a bridge arm converter (12). The bridge arm converter (12) is connected to an external battery (200) and an external charging port (10). The motor coil (11) is connected to the external charging port (10), and the motor coil (11) includes a plurality of phase windings, each phase winding includes N coil units, first ends of the N coil units of each phase winding are connected together and then connected to a corresponding phase bridge arm of the plurality of phase bridge arms, and second ends of coil units in each phase winding are connected to second ends of corresponding coil units in other phase windings and then selectively connected to the charging port (10).

公开(公告)号：US20240092184A1

公开(公告)日：2024-03-21

申请号：US18524970

申请日：2023-11-30

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Xiangshuai XU ,  Shaopeng REN ,  Zhiyong DU

IPC: B60L15/20

CPC classification number: B60L15/20 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425

Abstract: A method for controlling heating of an electric drive system of a vehicle, the electric drive system includes a motor controller and a motor, and the method includes: determining that the vehicle is in a travelling state; obtaining a rotation speed value and a torque control value of a motor and obtaining a carrier instruction value of a motor controller when receiving a heating instruction; obtaining a first current instruction value based on the rotation speed value and the torque control value, and obtaining a second current instruction value based on the torque control value and the first current instruction value; adjusting a control signal of the motor controller based on at least one of the second current instruction value or a second carrier frequency; and controlling the motor to operate based on the adjusted control signal, so that the electric drive system generates heat.

公开(公告)号：US20230076368A1

公开(公告)日：2023-03-09

申请号：US17787731

申请日：2020-11-25

Applicant: BYD COMPANY LIMITED

Inventor： Zhiyong DU ,  Luhui XU ,  Yilong YU ,  Axi QI

IPC: H02P3/06 ,  H02P23/14

Abstract: A motor control system includes a drive unit, a backup control unit, and a power unit. The drive unit is electrically connected to the power unit, and is configured to convert a received low-voltage drive signal into a high-voltage drive signal and output the high-voltage drive signal to the power unit. The power unit outputs, according to the high-voltage drive signal, a power supply drive signal provided by a high-voltage battery. The power supply drive signal is configured to drive a motor connected to the power unit to rotate. The backup control unit is electrically connected to the drive unit. The drive unit is configured to output a diagnosis signal indicating a running status of the drive unit to the backup control unit.

公开(公告)号：US20230023760A1

公开(公告)日：2023-01-26

申请号：US17786941

申请日：2020-11-25

Applicant: BYD COMPANY LIMITED

Inventor： Zhiyong DU ,  Luhui XU ,  Yilong YU ,  Axi QI ,  Guangming YANG

IPC: H02H7/08

Abstract: An electric motor control system includes a master control module, a drive module, and a monitoring module. The master control module is configured to output a low-voltage drive signal to the drive module, the drive module converts the low-voltage drive signal into a high-voltage drive signal and outputs the high-voltage drive signal to a power unit, and the power unit outputs, according to the high-voltage drive signal, a power supply drive signal provided by a high-voltage battery. The monitoring module is electrically connected with the master control module and the drive module, and is configured to acquire the low-voltage drive signal, and output a fault signal to the master control module when the low-voltage drive signal is abnormal, to control the master control module to stop outputting the low-voltage drive signal.

公开(公告)号：US20250058678A1

公开(公告)日：2025-02-20

申请号：US18936426

申请日：2024-11-04

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Zhiyong DU ,  Shaopeng REN

IPC: B60L58/27 ,  B60L53/20 ,  H01M10/44 ,  H02J7/00 ,  H02M7/5387

Abstract: An energy processing apparatus for a battery includes an inverter, an energy storage circuit, and a controller. A first terminal of the inverter is connected to the battery. A first terminal of the energy storage circuit is connected to an external power supply device, and a second terminal of the energy storage circuit is connected to a second terminal of the inverter. The controller is connected to a third terminal of the inverter. In a first state, the controller controls the inverter to enable the energy storage circuit to be charged or discharged by the battery to self-heat the battery. In a second state, at least a part of the energy storage circuit and at least a part of the inverter form an adaptive voltage charger, and the controller controls the adaptive voltage charger to charge the battery.

公开(公告)号：US20230086012A1

公开(公告)日：2023-03-23

申请号：US17909273

申请日：2020-08-24

Applicant: BYD COMPANY LIMITED

Inventor： Yilong YU ,  Luhui XU ,  Zhiyong DU ,  Axi QI ,  Guangming YANG

IPC: G01R31/34 ,  G01D5/20

Abstract: A device and a system for diagnosing a motor parameter are provided. The device includes a master chip, an excitation conditioning circuit, a motor resolver unit, and a sine and cosine conditioning circuit. The master chip includes a first analog-to-digital converter, a second analog-to-digital converter, a first processing unit, and a monitoring core.

公开(公告)号：US20230006437A1

公开(公告)日：2023-01-05

申请号：US17943878

申请日：2022-09-13

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Yilong YU ,  Zhiyong DU ,  Axi QI ,  Guangming YANG

IPC: H02H7/08 ,  B60L3/00 ,  H02P6/24 ,  H02P6/08

Abstract: A motor control system includes a main control unit, a power supply unit, and a driving unit. The main control unit obtains sampling data of a motor and a power supply signal from the driving unit, generates a motor control signal according to the sampling data, and outputs a safety enable signal when determining that motor drive is abnormal according to the sampling data or when determining that power supply to the driving unit is abnormal according to the power supply signal. The power supply unit supplies power to the main control unit, monitors a state of the main control unit, and outputs a safety cut-off signal when the power supply unit or the main control unit is abnormal. The driving unit drives the motor according to the motor control signal, and switches to a safe path when receiving any one of the safety enable or safety cut-off signal.

公开(公告)号：US20220393632A1

公开(公告)日：2022-12-08

申请号：US17789976

申请日：2020-12-29

Applicant: BYD COMPANY LIMITED

Inventor： Yilong YU ,  Luhui XU ,  Zhiyong DU ,  Axi QI ,  Guangming YANG

IPC: H02P29/028 ,  B60L3/00

Abstract: The present disclosure provides an electric motor control system and a vehicle. The electric motor control system includes a motor drive module, a multi-core processing module, and a safety logic module. The multi-core processing module includes a main function core and a lockstep monitoring core. The main function core is configured to obtain sampling data, and when any one of the sampling data, a running status of the main function core, a motor control signal, and a running status of a motor is abnormal, the lockstep monitoring core outputs a safety trigger signal; and the safety logic module is configured to output an instruction for prohibiting execution of the motor control signal to the motor drive module when receiving the safety trigger signal.