公开(公告)号：US10166882B2

公开(公告)日：2019-01-01

申请号：US14900798

申请日：2014-06-30

Applicant: BYD COMPANY LIMITED

Inventor： Guangming Yang ,  Jian Liu ,  Yilong Yu

IPC: H02J7/00 ,  B60L11/18 ,  H02J7/02 ,  H02J5/00 ,  H02J3/32

Abstract: A power system for an electric vehicle, an electric vehicle and a method for charging a power battery are provided. The power system includes: a power battery (10); a charge-discharge socket (20); a bidirectional DC-DC module (30); a driving control switch (40); a bidirectional DC-AC module (50); a motor (M); a motor control switch (60); a charge-discharge control module (70); a battery manager (108); and a control module (80) configured to control the driving control switch (40), the motor control switch (60) and the charge-discharge control module (70) so as to control the power system to enter a charge-discharge mode, and to control the power battery (10) to charge and discharge in a pulse mode so as to heat the power battery (10) when the temperature of the power battery (10) is lower than a predetermined temperature.

公开(公告)号：US12176838B2

公开(公告)日：2024-12-24

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.

公开(公告)号：US12009654B2

公开(公告)日：2024-06-11

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 ,  H02P27/08

CPC classification number: H02H7/0833 ,  H02P27/08

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：US12107411B2

公开(公告)日：2024-10-01

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 ,  H02P6/08 ,  H02P6/24

CPC classification number: H02H7/0822 ,  B60L3/0061 ,  H02H7/0833 ,  H02P6/08 ,  H02P6/24

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：US11811350B2

公开(公告)日：2023-11-07

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

CPC classification number: 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：US09862287B2

公开(公告)日：2018-01-09

申请号：US14901516

申请日：2014-06-30

Applicant: BYD COMPANY LIMITED

Inventor： Xiaohua Tang ,  Guangming Yang ,  Xinxin Zhang ,  Zhiyong Du ,  Min Hu ,  Yilong Yu ,  Jian Liu ,  Zheqing Tang ,  Fu Tang

IPC: B60L11/18 ,  H02J3/32 ,  H02J7/02 ,  B60L1/00 ,  B60L15/00 ,  B60L15/02 ,  H02M7/487 ,  H04L12/10

CPC classification number: B60L11/185 ,  B60L1/006 ,  B60L11/1803 ,  B60L11/1811 ,  B60L11/1812 ,  B60L11/1816 ,  B60L11/1818 ,  B60L11/1838 ,  B60L15/007 ,  B60L15/02 ,  B60L2210/30 ,  B60L2210/40 ,  H02J3/32 ,  H02J5/00 ,  H02J7/02 ,  H02J7/022 ,  H02M7/487 ,  H04L12/10 ,  Y02E60/721 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7241 ,  Y02T10/7258 ,  Y02T90/121 ,  Y02T90/127 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163 ,  Y04S10/126

Abstract: A power system for an electric vehicle, an electric vehicle and a motor controller for an electric vehicle are provided. The power system includes: a power battery (10); a charge-discharge socket (20); a three-level bidirectional DC-AC module (30); a motor control switch (40); a charge-discharge control module (50) having a first terminal connected with an AC terminal of the three-level bidirectional DC-AC module (30) and a second terminal connected with the charge-discharge socket (20); and a control module (60) connected with a third terminal of the charge-discharge control module (50) and a third terminal of the motor control switch (40), and configured to control the charge-discharge control module (50) and the motor control switch (40) according to a current working mode of the power system.