公开(公告)号：US20230335822A1

公开(公告)日：2023-10-19

申请号：US18340500

申请日：2023-06-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan HUANG ,  Guangyu XU ,  Haili LI ,  Shichao LI

IPC: H01M10/615 ,  H01M10/44 ,  H01M10/63 ,  H01M10/48 ,  H01M10/42

CPC classification number: H01M10/615 ,  H01M10/443 ,  H01M10/63 ,  H01M10/486 ,  H01M10/425 ,  H01M2220/20 ,  H01M2010/4271

Abstract: A method for charging a power battery includes determining a first charging current for the power battery, determining, according to a temperature of the power battery, whether to perform thermal management of the power battery, determining, in response to determining to perform the thermal management of the power battery, a thermal management current according to the first charging current and charging pile power, and sending the first charging current and the thermal management current to a charging pile. The first charging current is used for charging the power battery and the thermal management current is used for performing the thermal management of the power battery.

公开(公告)号：US20240022092A1

公开(公告)日：2024-01-18

申请号：US18343026

申请日：2023-06-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan HUANG ,  Guangyu XU ,  Wei ZHAO

IPC: H02J7/00 ,  B60L58/12 ,  B60L58/16 ,  B60L58/24 ,  B60L53/62 ,  H01M10/44 ,  H01M10/48 ,  H01M10/42

CPC classification number: H02J7/0029 ,  H02J7/00712 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/007194 ,  B60L58/12 ,  B60L58/16 ,  B60L58/24 ,  B60L53/62 ,  H01M10/443 ,  H01M10/486 ,  H01M10/425 ,  B60L2240/545 ,  H01M2010/4271 ,  H01M2220/20

Abstract: Embodiments of the present application provide a method for charging a power battery and a battery management system, which can effectively improve the charging speed of the power battery on the basis of ensuring the safety performance of the power battery. The method for charging a power battery is applied to a battery management system for the power battery. The method includes: determining a negative electrode potential safety threshold according to a battery state parameter of the power battery, the battery state parameter comprising at least one of the state of charge (SOC), the temperature, and the state of health (SOH) of the power battery; and adjusting a charging request current for the power battery based on a negative electrode potential of the power battery and the negative electrode potential safety threshold during a charging process for the power battery.

公开(公告)号：US20220206073A1

公开(公告)日：2022-06-30

申请号：US17563264

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu XU

IPC: G01R31/36 ,  G01R31/396 ,  H01M10/48 ,  G01R31/3828 ,  B60L58/12

Abstract: An acquiring method and device of residual energy of a power battery are provided. The acquiring method includes: acquiring an available capacity of a first type of cells and an available capacity of a second type of cells; determining a minimum available capacity as an available capacity of the power battery; determining available energy of the first type of cells according to the available capacity of the power battery, a current temperature, and a quantity of cells of the first type of cells; determining available energy of the second type of cells according to the available capacity of the power battery, a current temperature, and a quantity of cells of the second type of cells; and determining the sum of the available energy of the first type of cells and the available energy of the second type of cells as a quantity of residual energy of the power battery.

公开(公告)号：US20240039063A1

公开(公告)日：2024-02-01

申请号：US18379222

申请日：2023-10-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Guangyu XU ,  Shuai SONG

IPC: H01M10/42 ,  G01R31/3835 ,  H02J7/00 ,  H01M10/48 ,  H01M10/44

CPC classification number: H01M10/4285 ,  G01R31/3835 ,  H02J7/0068 ,  H01M10/425 ,  H01M10/482 ,  H01M10/441 ,  H01M2010/4271

Abstract: A lithium precipitation detection method may include: sending, when a battery management module in the battery pack determines that a change in a charging voltage of the battery pack meets a predetermined condition, a charging request containing a first current to a charging pile for charging, and controlling the battery pack to be charged with the first current for a first predetermined duration and a second predetermined duration, where the first predetermined duration is equal to the second predetermined duration; obtaining, by the battery management module, a first voltage change amount within the first predetermined duration and a second voltage change amount within the second predetermined duration; and determining, when the battery management module determines that a difference between the second voltage change amount and the first voltage change amount is greater than a predetermined voltage threshold, that lithium precipitation occurs in the battery pack.

公开(公告)号：US20230327464A1

公开(公告)日：2023-10-12

申请号：US18209491

申请日：2023-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan HUANG ,  Guangyu XU ,  Haili LI ,  Shichao LI

IPC: H02J7/00

CPC classification number: H02J7/0029 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/007194

Abstract: Embodiments of the present application provide a method for charging a power battery and a battery management system. The method may be applied to a battery management system for the power battery, and the method may comprise acquiring a charging mode of the power battery; determining a negative electrode potential safety threshold for the power battery according to the charging mode of the power battery; acquiring a negative electrode potential of the power battery during a charging process for the power battery; and adjusting a charging current for the power battery based on the negative electrode potential of the power battery and the negative electrode potential safety threshold.

公开(公告)号：US20230048691A1

公开(公告)日：2023-02-16

申请号：US17963368

申请日：2022-10-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu XU ,  Xia HU ,  Yonghuang YE ,  Guangyu XU ,  Haizu JIN ,  Chengdu LIANG ,  Quanguo LI

IPC: H01M4/505 ,  H01M50/133 ,  H01M10/42 ,  H01M4/525 ,  H01M50/204

Abstract: The present application relates to a battery module, which includes a first type of battery cells and a second type of battery cells electrically connected in series. The first type of battery cells and the second type of battery cells are battery cells with different chemical systems. The first type of battery cells includes N first battery cells, and the second type of battery cells includes M second battery cells, where N and M are greater than or equal one. The present application also relates to a battery pack and an electric apparatus including the battery module, and method and device for manufacturing the battery module.

公开(公告)号：US20220326308A1

公开(公告)日：2022-10-13

申请号：US17845362

申请日：2022-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chen CHEN ,  Guangyu XU ,  Wei ZHAO

IPC: G01R31/387 ,  G01R31/392 ,  G01R31/3842 ,  G01R31/36

Abstract: Embodiments of this application relate to the technical field of batteries, and in particular, to a state-of-charge cut-off control method, apparatus and system, and a storage medium. The method includes: obtaining, in a discharging process of a battery, a net discharge capacity of a first battery cell from being fully charged to current time; obtaining an available capacity and a state of health of the first battery cell; obtaining a current remaining dischargeable capacity of the first battery cell; and setting a state of charge SOC of the first battery cell to 0.

公开(公告)号：US20220285958A1

公开(公告)日：2022-09-08

申请号：US17825714

申请日：2022-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu XU ,  Shichao LI ,  Wei ZHAO

IPC: H02J7/00 ,  G01R31/396 ,  G01R31/367 ,  G01R31/392 ,  G01R31/382

Abstract: This application provides a method and device for estimating a SOC of a battery pack, and a battery management system. The battery pack includes a first cell without a plateau and a second cell with a plateau. At least one first cell is serially connected to the second cell. The method includes: determining a capacity variation of the battery pack based on a SOC variation of the first cell in comparison with an initial SOC of the first cell, and based on a nominal capacity of the first cell; obtaining an equalization capacity of the first cell and an equalization capacity of the second cell; and estimating a SOC of the second cell, and determining the SOC of the battery pack based on the SOC of the second cell.

公开(公告)号：US20220209547A1

公开(公告)日：2022-06-30

申请号：US17488410

申请日：2021-09-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei PENG ,  Guangyu XU ,  Shichang ZHANG ,  Shichao LI

IPC: H02J7/00 ,  H01M10/42 ,  H01M50/51

Abstract: This application embodiment provides a method for equalizing the battery module, an apparatus, a battery module and a power management controller, including: judging whether the first battery core and the second battery core enter their respective fully-charged interval; if the first battery core enters and the second battery core doesn't enter, discharging the first battery core until the second battery core enters; if the first battery core doesn't enter and the second battery core enters, judging whether the maximum value of the first charging voltage of each battery cell in the first battery core is greater than a third preset value; if so, discharging the second battery core until the first battery core enters; if not, controlling both to rest a preset time; after resting for the preset time, discharging the first battery core and the second battery core until the SOC of each battery cell enters a same state.

公开(公告)号：US20240272230A1

公开(公告)日：2024-08-15

申请号：US18644543

申请日：2024-04-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Guangyu XU ,  Xinfeng YANG

IPC: G01R31/385 ,  G01R31/388 ,  H01M10/42 ,  H01M10/44

CPC classification number: G01R31/3865 ,  G01R31/388 ,  H01M10/4285 ,  H01M10/446 ,  H01M2010/4271

Abstract: The embodiments of the present disclosure relate to the field of battery technology, and provide a battery lithium plating detection method, device, management system, battery and electric device. The lithium plating detection method may include: charging a to-be-tested battery and stopping charging after the to-be-tested battery has been charged to a first state of charge (SOC), and allowing the to-be-tested battery to rest; obtaining a first voltage of the to-be-tested battery upon completion of electrochemical equilibrium; collecting a second voltage of the to-be-tested battery; and determining that lithium plating has occurred in the to-be-tested battery in case where a difference between the second voltage and the first voltage is greater than a first voltage threshold.