公开(公告)号：US20230216316A1

公开(公告)日：2023-07-06

申请号：US18111895

申请日：2023-02-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiangtao LI ,  Bao LI ,  Kai WU

IPC: H02J7/00 ,  H01M10/48 ,  H01M10/42

CPC classification number: H02J7/0024 ,  H02J7/0036 ,  H01M10/48 ,  H01M10/425 ,  H02J7/00712 ,  H01M2220/20

Abstract: Embodiments of this application provide a battery control circuitry, a battery control method, and an electric apparatus. The battery control circuitry may include a charging interface, a switch circuit, a first battery pack; a second battery pack, where a positive electrode of the second battery pack may be connected to a negative electrode of the first battery pack; and a control circuit, configured to: when detecting that the charging interface receives a charging signal from a low-voltage platform, control the switch circuit to switch to a first connection state, where in the first connection state, a target battery pack may be connected in series to the charging interface to form a first loop, so as to charge the target battery pack, where the target battery pack may be the first battery pack or the second battery pack.

公开(公告)号：US20230034292A1

公开(公告)日：2023-02-02

申请号：US17565541

申请日：2021-12-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiyang ZUO ,  Yu YAN ,  Bao LI ,  Xiao WANG ,  Zhanliang LI ,  Longzhen LIN

IPC: H02J7/00 ,  H02J3/32 ,  H01M10/42

Abstract: Embodiments of the present application provide a charging and discharging apparatus, a method for charging a battery and a charging and discharging system, which are capable of ensuring security performance of a battery. The charging and discharging apparatus includes a bidirectional AC/DC converter, a first DC/DC converter, a second DC/DC converter and a control unit. The control unit is configured to: receive a first charging request transmitted by the BMS and control an AC power source and/or an energy storage unit to charge the battery; receive a first discharging request transmitted by the BMS and discharging a power of the battery according to the first discharging request; and receive a second charging request transmitted by the BMS and control the AC power source and/or the energy storage unit to charge the battery.

公开(公告)号：US20230219543A1

公开(公告)日：2023-07-13

申请号：US17875439

申请日：2022-07-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiming QIN ,  Bao LI ,  Kai WU

IPC: B60T8/1761 ,  B60T8/171 ,  B60T13/74

CPC classification number: B60T8/1761 ,  B60T8/171 ,  B60T13/745 ,  B60T2220/04 ,  B60T2250/04 ,  B60T2270/88

Abstract: This application provides a torque compensation method for a vehicle, a torque compensation apparatus of a vehicle, and an associated computer-readable storage medium. The torque compensation method includes: when a vehicle control module determines that the vehicle is in a sliding state during a brake idle stroke, obtaining, by the vehicle control module, a pressure of a brake master cylinder of the vehicle, and controlling a motor of the vehicle based on the pressure of the brake master cylinder to output a compensation torque. In this application, a range of the brake idle stroke of the vehicle can be precisely determined, so as to control the motor of the vehicle to output the compensation torque in a timely manner, thereby effectively suppressing sliding during the brake idle stroke of the vehicle and ensuring safe driving.

公开(公告)号：US20250112482A1

公开(公告)日：2025-04-03

申请号：US18979370

申请日：2024-12-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED ,  Contemporary Amperex Intelligence Technology (Shanghai) Limied

Inventor： Bao LI ,  Chuanhui ZHANG

IPC: H02J7/00 ,  B60R16/033 ,  H02J7/02

Abstract: A power supply system includes a charger supporting an alternating current/direct current bidirectional conversion, a battery, an electrical converter and an electrical apparatus. The charger is electrically connected with both the battery and the electrical apparatus, and the battery is electrically connected with the electrical apparatus through the electrical converter.

公开(公告)号：US20240291297A1

公开(公告)日：2024-08-29

申请号：US18655367

申请日：2024-05-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiyang ZUO ,  Xiao WANG ,  Xiangtao LI ,  Bao LI

IPC: H02J7/00 ,  B60L53/20 ,  B60L53/62

CPC classification number: H02J7/00306 ,  B60L53/20 ,  B60L53/62 ,  H02J7/0013 ,  H02J7/0048 ,  H02J7/00712 ,  B60L2210/10 ,  H02J2207/20

Abstract: The present application provides a method and a device for charging and discharging a battery system, the battery system and an electric vehicle. The battery system includes a low-voltage battery and a high-voltage battery, the high-voltage battery and the low-voltage battery are both configured to be connected with a load. The method for charging and discharging the battery system includes steps of obtaining a first power of the load when the load is in operation; obtaining a first SOC value of the low-voltage battery and a second SOC value of the high-voltage battery; and controlling charge-and-discharge processes of the high-voltage battery and the low-voltage battery according to the first power, the first SOC value and the second SOC value.

公开(公告)号：US20220376320A1

公开(公告)日：2022-11-24

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 ,  B60L58/27 ,  G01K3/00 ,  G01K3/10 ,  G01R31/34

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：US20230208149A1

公开(公告)日：2023-06-29

申请号：US17940318

申请日：2022-09-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Diping LIU ,  YU YAN ,  Xiyang ZUO ,  Xianxi PAN ,  Bao LI ,  Zhimin DAN

IPC: H02J7/00

CPC classification number: H02J7/00034 ,  H02J7/00716 ,  H02J7/0032

Abstract: A battery charging control method applicable to a vehicle electrical system that includes a current control unit including a semiconductor device. Two ends of the current control unit are connected to a battery and a charging power supply, respectively. The method includes controlling, when a temperature of the battery is below a preset temperature, the current control unit to be in a first state in which the semiconductor device is reversely connected in a circuit, sending a first charging request including a first charging current required to heat the battery to the preset temperature, controlling, when the temperature of the battery reaches the preset temperature, the current control unit to be in a second state in which the semiconductor device is disconnected from the circuit or forwardly connected in the circuit, and sending a second charging request including a second charging current at which the battery is charged.

公开(公告)号：US20210354593A1

公开(公告)日：2021-11-18

申请号：US17390873

申请日：2021-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Tiancong WANG ,  Xiyang I. ZUO ,  Zhimin DAN ,  Xiong ZHENG ,  Bao LI

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

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：US20230191868A1

公开(公告)日：2023-06-22

申请号：US17888506

申请日：2022-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chuanhui ZHANG ,  Bao LI ,  Kai WU

IPC: B60H1/00 ,  B60H1/32 ,  H01M10/6564 ,  H01M10/613

CPC classification number: B60H1/00278 ,  B60H1/00885 ,  B60H1/3205 ,  H01M10/6564 ,  H01M10/613 ,  B60H2001/00307 ,  B60H2001/00928

Abstract: The embodiments of this application relate to the technical field of battery, and in particular, to a thermal management system, a method and an equipment. In this thermal management system, a compressor and a condenser form a cooling loop with a thermal exchange pipeline of the battery, and a compressor and an evaporator form a heating loop with a thermal exchange pipeline, so that this thermal management system can provide both cooling and heating for battery, in comparison with the direct cooling system and heating film, this thermal management system features simple structure and high reliability. In addition, the locations of the condenser and the evaporator can be reasonably arranged as required to achieve the secondary utilization of hot air and cold air.

公开(公告)号：US20220368270A1

公开(公告)日：2022-11-17

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.