公开(公告)号：US20240304890A1

公开(公告)日：2024-09-12

申请号：US18669698

申请日：2024-05-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang LI ,  Yuanmiao ZHAO ,  Yu YAN ,  Xinwei CHEN ,  Xiyang ZUO ,  Xiaojian HUANG ,  Zhimin DAN

IPC: H01M10/637 ,  H01M10/615 ,  H02J7/00 ,  H02J7/34 ,  H02M3/335

CPC classification number: H01M10/637 ,  H01M10/615 ,  H02J7/007194 ,  H02J7/34 ,  H02M3/33584

Abstract: The present application discloses a charging apparatus, which comprises: a direct current (DC) source; a bidirectional DC converter connected between the DC source and a charging port of the charging apparatus; a pulse heating module connected in parallel with the bidirectional DC converter; and a controller configured for: selecting, when a heating request is received and according to a heating frequency requirement of a battery, one of the pulse heating module and the bidirectional DC converter to heat the battery. The present application also relates to a method for heating a battery and a storage medium.

公开(公告)号：US20230291219A1

公开(公告)日：2023-09-14

申请号：US18320035

申请日：2023-05-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang LI ,  Huanle ZHOU ,  Meng LI ,  Xiyang ZUO ,  Yu YAN ,  Zhimin DAN

IPC: H02J7/00 ,  H01M10/04 ,  H01M10/44

CPC classification number: H02J7/0068 ,  H01M10/0404 ,  H01M10/446 ,  H02J2207/20

Abstract: A battery formation apparatus includes a DC-DC conversion module, an additional power supply, and a control circuit. Low-voltage and high-voltage terminals of the DC-DC conversion module are electrically connected to the control circuit and a DC bus, respectively. The DC-DC conversion module is configured to, when a battery unit discharges into the battery formation apparatus, convert a first voltage input into a second voltage greater than the first voltage, and output the second voltage. The additional power supply is electrically connected to the control circuit, and configured to output an additional voltage. The control circuit is electrically connected to the battery unit, the low-voltage terminal of the DC-DC conversion module, and the additional power supply. The control circuit is configured to serially connect the low-voltage terminal of the DC-DC conversion module, the battery unit, and the additional power supply when the battery unit discharges into the battery formation apparatus.

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：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：US20230231218A1

公开(公告)日：2023-07-20

申请号：US17896107

申请日：2022-08-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang LI ,  Zhimin DAN ,  Yu YAN ,  Xiaojian HUANG ,  Xiyang ZUO ,  Yuanmiao ZHAO ,  Xiao WANG

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

CPC classification number: H01M10/633 ,  B60L58/27 ,  H02J7/0068 ,  H01M10/615 ,  H01M10/625

Abstract: Embodiments of this application provide a DC/DC conversion circuit, a power unit, a charging pile, and a charge-discharge heating method. The circuit includes: a first rectifier module, where an input end of the first rectifier module is connected to a power grid through an AC/DC conversion circuit; a transformer module, where an input end of the transformer module is connected to an output end of the first rectifier module; an energy storage module; and a second rectifier module, where an input end of the second rectifier module is configured to connect to an output end of the transformer module or the energy storage module, and an output end of the second rectifier module is configured to connect to a battery pack of an electric vehicle when the charging pile is charging the electric vehicle.

公开(公告)号：US20230035145A1

公开(公告)日：2023-02-02

申请号：US17715203

申请日：2022-04-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu YAN ,  Xiyang ZUO ,  Diping LIU ,  Haili LI ,  Zhanliang LI ,  Zhimin DAN

IPC: H02J7/00

Abstract: The embodiments of the present application provide a method for charging a battery, a battery management system, and a charge and discharge device. The method for charging the battery includes: acquiring, by a BMS, a first charge current and sending it to a charge and discharge device, thus making the charge and discharge device charge the battery based on the first charge current; if a first accumulated charge quantity of the battery is greater than or equal to a first accumulated charge quantity threshold value, acquiring, by the BMS, a first discharge current and sending it to the charge and discharge device, thus making the charge and discharge device control the battery to discharge based on the first discharge current; and if a first accumulated discharge quantity of the battery is greater than or equal to a first accumulated discharge quantity threshold value.

公开(公告)号：US20230031352A1

公开(公告)日：2023-02-02

申请号：US17563513

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu YAN ,  Xiyang ZUO ,  Zhimin DAN ,  Haili LI ,  Shan HUANG ,  Shichao LI

IPC: H02J7/00 ,  B60L50/60 ,  B60L58/12 ,  H01M10/42

Abstract: Embodiments of the application provide a method for charging battery a charging and discharging device, which can ensure the safety performance of the battery. The charging and discharging device includes a first DC/DC converter, a unidirectional AC/DC converter and a control unit, where the first DC/DC converter is a unidirectional DC/DC converter, and the control unit is configured to: receive a first charging current and control the unidirectional AC/DC converter and the first DC/DC converter to charge a battery through an AC power source based on the first charging current; receive a first discharging current, and control the battery to release power based on the first discharging current; and receive a second charging current, and control the unidirectional AC/DC converter and the first DC/DC converter to charge the battery through the AC power source based on the second charging current.

公开(公告)号：US20230029492A1

公开(公告)日：2023-02-02

申请号：US17715166

申请日：2022-04-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiyang ZUO ,  Yu YAN ,  Jinfeng GAO ,  Diping LIU ,  Zhanliang LI ,  Yizhen HOU

IPC: H02J7/00 ,  H02J7/02 ,  H02J3/28

Abstract: Embodiments of the present application provide a charging and discharging apparatus and a battery charging method, which are capable of ensuring security performance of a battery. The apparatus comprises a bi-directional DC/DC converter and a control unit, wherein the control unit is configured to: receive a first charging current transmitted by a battery management system (BMS) of a battery, control the bi-directional DC/DC converter based on the first charging current to charge the battery through an energy storage battery; receive a first discharging current transmitted by the BMS and control the bi-directional DC/DC converter based on the first discharging current to discharge a battery capacity of the battery to the energy storage battery; and receive a second charging current transmitted by the BMS and control the bi-directional DC/DC converter based on the second charging current to charge the battery through the energy storage battery.

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：US20200207237A1

公开(公告)日：2020-07-02

申请号：US16370975

申请日：2019-03-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiyang ZUO ,  Zhimin DAN ,  Wei ZHANG ,  Yizhen HOU ,  Guowei LI ,  Xingyuan WU ,  Yanru LI

IPC: B60L58/27 ,  B60L50/51 ,  B60L58/12

Abstract: The disclosure provides a battery heating system and a control method thereof. The system includes a first switch, a second switch, a switch component, a motor, and a main controller. The first switch, the second switch, the switch component and the main controller are integrated in a same housing. The main controller is to determine, based on a state parameter of the battery pack, that the battery pack needs to be heated, and to send a battery heating request to a vehicle controller, so as to enable the vehicle controller to send a battery heating instruction to the main controller according to the battery heating request in a case where a vehicle is in a static state and the motor is not operating; and to control, based on the battery heating instruction, the first switch, the second switch and the switch component so as to heat the battery pack.