公开(公告)号：US11453311B2

公开(公告)日：2022-09-27

申请号：US17541296

申请日：2021-12-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaojian Huang ,  Xiong Zheng ,  Xiyang Zuo ,  Zhimin Dan ,  Bao Li

IPC: B60L58/27 ,  H01M10/615 ,  H01M10/63 ,  H01M10/48 ,  H01M10/42 ,  H05B1/02 ,  B60L53/20 ,  H01M10/657 ,  H02P27/06

Abstract: The present application provides a battery thermal management system, a control method and device of a battery heating system, a device, and a medium. The method includes: acquiring a temperature rise rate parameter of the battery; determining proportions of a square wave signal and a sine wave signal in a first control signal of the switch components according to the temperature rise rate parameter; generating the first control signal of the switch components according to the proportions of the square wave signal and the sine wave signal; outputting the first control signal to the switch components to control switching on or off of the switch components via the first control signal, so as to generate an alternating current in a loop connecting the battery and the motor and heat the battery using the alternating current.

公开(公告)号：US11338702B2

公开(公告)日：2022-05-24

申请号：US17390873

申请日：2021-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Tiancong Wang ,  Xiyang Zuo ,  Zhimin Dan ,  Xiong Zheng ,  Bao Li

IPC: B60L58/27 ,  H01M10/44 ,  H02J7/00 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H02P29/68

Abstract: The application provides a control system and method for a battery pack heating system. The control system includes: a battery management system configured to acquire a state parameter of a battery pack, and send heating request information to a vehicle controller when determining the state parameter of the battery pack meets a preset heating condition; a motor controller configured to send, to the vehicle controller, feedback information indicating that a motor of the battery pack heating system is in a non-operating state, when determining the motor is in the non-operating state, and control, in response to a first control signal, a target upper bridge arm switch module and a target lower bridge arm switch module to be periodically turned on or off; and the vehicle controller configured to send the first control signal to the motor controller in response to the heating request information and the feedback information.

公开(公告)号：US11502346B1

公开(公告)日：2022-11-15

申请号：US17877208

申请日：2022-07-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Bao Li ,  Xiyang Zuo

IPC: H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/48 ,  H02P29/66 ,  G01K3/00 ,  G01K3/10 ,  G01R31/34 ,  B60L58/27

Abstract: Disclosed is a traction battery self-heating control method and a device. Acquiring a second temperature of a rotor at a current sampling time according to system parameters and a first temperature of the rotor at a previous sampling time, and estimating a third temperature of the rotor at a next sampling time according to the first temperature and the second temperature, and stopping the self-heating of the traction battery when the third temperature reaches a demagnetization temperature of the rotor. Whether to stop the self-heating of the traction battery is determined by estimating a rotor temperature under the self-heating condition, and comparing the rotor temperature with the demagnetization temperature of the rotor, and thus the self-heating control of the traction battery is realized.

公开(公告)号：US20240329144A1

公开(公告)日：2024-10-03

申请号：US18743142

申请日：2024-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chuanhui Zhang ,  Xiangtao Li ,  Bao Li ,  Kai Wu

IPC: G01R31/3835 ,  H01M10/42 ,  H02J7/00

CPC classification number: G01R31/3835 ,  H01M10/4207 ,  H01M10/425 ,  H02J7/00036 ,  H01M2010/4271 ,  H01M2010/4278

Abstract: A battery management method, a battery management device, and a battery system are provided in the embodiments of the present disclosure. The battery management method is applied to the battery management device to realize management of the battery device. The battery management device comprises a connection state transition device, contacts of the connection state transition device are connected to two battery packs of the battery device, respectively. The method includes: obtaining an operating environment voltage of the battery device; and controlling the connection state transition device to transition from a first connection state to a second connection state according to the operating environment voltage. It is desirable to solve the technical problem of incompatibility of the battery device with different voltage platforms in the embodiments of the present disclosure.

公开(公告)号：US12100819B2

公开(公告)日：2024-09-24

申请号：US17390879

申请日：2021-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiong Zheng ,  Zhimin Dan ,  Xiyang Zuo ,  Bao Li ,  Tiancong Wang

IPC: H01M10/44 ,  B60L3/00 ,  B60L15/20 ,  B60L53/62 ,  B60L58/12 ,  B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H02J7/00 ,  H02P29/68

CPC classification number: H01M10/443 ,  B60L3/0046 ,  B60L15/20 ,  B60L53/62 ,  B60L58/12 ,  B60L58/27 ,  H01M10/441 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H02J7/0068 ,  H02P29/68 ,  H01M2220/20

Abstract: The present application provides a switch control device and method, a motor controller, and a battery pack heating control system. The switch control device includes: a processing module configured to select, when it is determined that a switch control cycle switches from a previous cycle to a current cycle, a target upper bridge arm switch module for the current cycle from upper bridge arm switch modules other than a target upper bridge arm switch module for the previous cycle and/or select a target lower bridge arm switch module for the current cycle from lower bridge arm switch modules other than a target lower bridge arm switch module for the previous cycle; wherein the processing module is further configured to: during each switch control cycle, control the target upper bridge arm switch module and the target lower bridge arm switch module to be turned on and off.

公开(公告)号：US20210359348A1

公开(公告)日：2021-11-18

申请号：US17390879

申请日：2021-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiong ZHENG ,  Zhimin Dan ,  Xiyang Zuo ,  Bao Li ,  Tiancong Wang

IPC: H01M10/44 ,  H02J7/00 ,  H02P29/68 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  B60L58/27 ,  B60L3/00 ,  B60L58/12 ,  B60L15/20 ,  B60L53/62

Abstract: The present application provides a switch control device and method, a motor controller, and a battery pack heating control system. The switch control device includes: a processing module configured to select, when it is determined that a switch control cycle switches from a previous cycle to a current cycle, a target upper bridge arm switch module for the current cycle from upper bridge arm switch modules other than a target upper bridge arm switch module for the previous cycle and/or select a target lower bridge arm switch module for the current cycle from lower bridge arm switch modules other than a target lower bridge arm switch module for the previous cycle; wherein the processing module is further configured to: during each switch control cycle, control the target upper bridge arm switch module and the target lower bridge arm switch module to be turned on and off.

公开(公告)号：US20240322591A1

公开(公告)日：2024-09-26

申请号：US18677896

申请日：2024-05-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiangtao Li ,  Bao Li ,  Kai Wu

IPC: H02J7/04 ,  B60L53/62 ,  H02J7/00

CPC classification number: H02J7/04 ,  B60L53/62 ,  H02J7/0047 ,  B60L2210/14 ,  B60L2210/30

Abstract: The application provides a battery charging circuit. The battery charging circuit includes a bidirectional vehicle-mounted charging module; a first loop switch module, configured to, once turned on, connect a direct current charging interface of a charging pile to the bidirectional vehicle-mounted charging module's first end, and the bidirectional vehicle-mounted charging module's second end to a battery pack, when the charging pile is charging an electric vehicle; a second loop switch module, configured to, once turned on, connect the direct current charging interface to the battery pack, when the charging pile is charging the electric vehicle; the bidirectional vehicle-mounted charging module, configured to boost a direct current voltage output by the charging pile to be higher than a preset voltage; and a control module, configured to control the first loop switch module or the second loop switch module to be turned on, according to the direct current voltage.

公开(公告)号：US11606058B2

公开(公告)日：2023-03-14

申请号：US17878424

申请日：2022-08-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Bao Li ,  Xiyang Zuo

IPC: H02P29/60 ,  B60L50/60 ,  B60L58/27

Abstract: Disclosed is a motor, a control method, a power system, and an electric vehicle. Each phase stator winding of the motor includes two sub-winding sets. When a traction battery needs to be heated, the two sub-winding sets of the motor store electrical energy and provide alternating currents to the traction battery through an inverter, so that the traction battery uses its internal resistance for heating. In addition, the two sub-winding sets generate opposite magnetic fields which cancel each other out, so that the strength of the magnetic field inside each phase stator winding and the air gap magnetic flux are reduced, thereby alleviating the heat generation and NVH problems of the motor.

公开(公告)号：US20220219568A1

公开(公告)日：2022-07-14

申请号：US17541296

申请日：2021-12-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaojian HUANG ,  Xiong Zheng ,  Xiyang Zuo ,  Zhimin Dan ,  Bao Li

IPC: B60L58/27 ,  H01M10/615 ,  H05B1/02 ,  B60L53/20 ,  H01M10/657 ,  H01M10/63 ,  H01M10/48 ,  H01M10/42 ,  H02P27/06

Abstract: The present application provides a battery thermal management system, a control method and device of a battery heating system, a device, and a medium. The method includes: acquiring a temperature rise rate parameter of the battery; determining proportions of a square wave signal and a sine wave signal in a first control signal of the switch components according to the temperature rise rate parameter; generating the first control signal of the switch components according to the proportions of the square wave signal and the sine wave signal; outputting the first control signal to the switch components to control switching on or off of the switch components via the first control signal, so as to generate an alternating current in a loop connecting the battery and the motor and heat the battery using the alternating current.

公开(公告)号：US11772515B2

公开(公告)日：2023-10-03

申请号：US17385879

申请日：2021-07-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiyang Zuo ,  Zhimin Dan ,  Xiong Zheng ,  Bao Li ,  Tiancong Wang

IPC: B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  B60L58/12 ,  H01M10/42

CPC classification number: B60L58/27 ,  B60L58/12 ,  H01M10/425 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  B60L2240/545 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A battery pack heating system includes: a main positive switch, a main negative switch, an inverter, an external port, a motor, a control module for auxiliary charging branch, a vehicle control unit, a motor control unit, and a battery management module. The battery management module is configured to send, when an acquired state parameter of the battery pack meets a preset low-temperature-low-power condition, a low-temperature-low-power heating request instruction to the vehicle control unit and the control module respectively. The control module is configured to send a first control signal to control the auxiliary charging branch to be connected. The vehicle control unit is configured to send a second control signal to enable the motor control unit to control on-off of the switch modules in the inverter, and a third control signal to enable the battery management module to control on-off of the main positive switch.