公开(公告)号：US20140084825A1

公开(公告)日：2014-03-27

申请号：US14039852

申请日：2013-09-27

Applicant: BYD COMPANY LIMITED ,  SHENZHEN BYD AUTO R&D COMPANY LIMITED

Inventor： Hui LUO ,  Zhiyong DU ,  Xuguang ZHOU ,  Xinxin ZHANG ,  Xing CHEN ,  Kai XIAO ,  Lipin CHENG

IPC: H02P6/00 ,  H02P6/12

CPC classification number: H02P6/12 ,  H02P6/182 ,  H02P6/34

Abstract: A method for checking an out-of-step of a synchronous motor includes detecting electric degrees of the synchronous motor, in which the electric degrees comprise at least a first electric degree and a second electric degree detected at a preset interval, and the second electric degree is detected after the first electric degree; comparing the first electric degree with the second electric degree to obtain a comparing result; and determining that the synchronous motor is out of step when the comparing result satisfies a preset requirement. It is determined that the synchronous motor is out of step when the electric degree keeps unchanged or decreases progressively, or an increment of the electric degree is very small.

Abstract translation: 用于检查同步电动机的失步的方法包括检测同步电动机的电度，其中电度包括以预定间隔检测到的至少第一电度和第二电度，第二电 在第一电度之后检测度; 将第一电度与第二电度进行比较以获得比较结果; 并且当比较结果满足预设要求时，确定同步电动机不合格。 当电度保持不变或逐渐减小时，同步电动机不合格，或者电度的增量非常小。

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：US20140084826A1

公开(公告)日：2014-03-27

申请号：US14039984

申请日：2013-09-27

Applicant: BYD COMPANY LIMITED ,  SHENZHEN BYD AUTO R&D COMPANY LIMITED

Inventor： Hui LUO ,  Zhiyong DU ,  Xuguang ZHOU ,  Xinxin ZHANG ,  Xing CHEN ,  Taotao YANG ,  Lipin CHENG

IPC: H02P6/00 ,  H02P6/12

CPC classification number: H02P6/12 ,  H02P6/34 ,  H02P29/0241

Abstract: A method for checking an out-of-step of a synchronous motor includes detecting three-phase currents of the synchronous motor; determining whether a relationship between the three-phase currents satisfies a preset requirement; and if no, determining that the synchronous motor is out of step. It is determined that the synchronous motor is out of step when amplitudes of each current of the three-phase currents are not equal or when the phase difference between the three-phase currents is not 120°.

Abstract translation: 用于检查同步电动机的失步的方法包括检测同步电动机的三相电流; 确定三相电流之间的关系是否满足预设要求; 并且如果否，则确定同步电动机不合格。 确定当三相电流的每个电流的幅度不相等时或当三相电流之间的相位差不是120°时，同步电动机失步。

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.