公开(公告)号：US12095303B2

公开(公告)日：2024-09-17

申请号：US17707780

申请日：2022-03-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu Xu ,  Haili Li ,  Wei Zhao

IPC: H02J7/00 ,  G01R31/367 ,  G01R31/3835

CPC classification number: H02J7/00712 ,  G01R31/367 ,  G01R31/3835 ,  H02J7/0029 ,  H02J7/0047

Abstract: This application provides a method and device for detecting charging abnormality, and a storage medium. In this application, a first sampling moment corresponding to a first minimum voltage in n sampled voltages is determined based on n consecutive sampled voltages of a first cell from an end moment of an ith charging phase to an end moment of an (i+1)th charging phase in a kth charging process. A second sampling moment corresponding to a second minimum voltage in any one of the first (k−1)th charging processes can be determined in the same way. Then abnormality of the kth charging process is determined.

公开(公告)号：US20230402868A1

公开(公告)日：2023-12-14

申请号：US18458168

申请日：2023-08-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan Huang ,  Shichao Li ,  Haili Li ,  Wei Zhao ,  Lan Xie

IPC: H02J7/00

CPC classification number: H02J7/007194 ,  H02J7/0049 ,  H02J7/005 ,  H02J7/00714

Abstract: Provided are a method for charging a traction battery and a battery management system, which can improve the performance of a traction battery. The method for charging the traction battery is applied to a battery management system BMS of the traction battery, where the method includes: in a charging process of the traction battery, obtaining a state parameter of the traction battery, where the state parameter includes at least one of the following parameters: a state of charge SOC, a state of health SOH, and a temperature; determining an SOC interval value and a discharging parameter corresponding to discharging of the traction battery based on the state parameter of the traction battery, where the discharging parameter includes at least one of the following parameters: a discharging time, a discharging current, and a discharging waveform.

公开(公告)号：US12051934B2

公开(公告)日：2024-07-30

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

CPC classification number: H02J7/00714 ,  B60L50/60 ,  B60L58/12 ,  H01M10/425 ,  H02J7/0048 ,  B60L2210/10 ,  B60L2210/30 ,  H01M2010/4271

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：US11870289B2

公开(公告)日：2024-01-09

申请号：US18327702

申请日：2023-06-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan Huang ,  Shichao Li ,  Haili Li ,  Wei Zhao ,  Zhen Lin

IPC: H02J7/00 ,  H01M10/44 ,  B60L58/13 ,  H01M10/42

CPC classification number: H02J7/0048 ,  B60L58/13 ,  H01M10/425 ,  H01M10/44 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A method for charging a traction battery includes obtaining a battery parameter of the traction battery that includes a state of charge and/or an open-circuit voltage, and, during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter changing by a parameter gap value. The parameter gap value is a first preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a first parameter interval, and is a second preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a second parameter interval. The first preset parameter gap value is greater than the second preset parameter gap value, and the battery parameter in the first parameter interval is less than the battery parameter in the second parameter interval.

公开(公告)号：US11909244B2

公开(公告)日：2024-02-20

申请号：US17365362

申请日：2021-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haili Li

IPC: H02J7/00

CPC classification number: H02J7/00712 ,  H02J7/0048 ,  H02J7/007182 ,  H02J2310/54

Abstract: Disclosed are a battery charging method, a controller, a battery management system, a battery, and an electric device, aimed to suppress lithium plating of the battery. The battery charging method includes: obtaining an electrical parameter of a battery; determining whether the electrical parameter of the battery reaches a preset threshold, where a value range of the preset threshold meets the following condition: a battery state of charge (SOC) corresponding to the preset threshold is 70% to 80%; suspending, when the electrical parameter of the battery reaches the preset threshold, charging of the battery and discharging the battery for a duration of t; and continuing to charge the battery when the discharge is completed.

公开(公告)号：US20230398902A1

公开(公告)日：2023-12-14

申请号：US18458164

申请日：2023-08-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan Huang ,  Shichao Li ,  Haili Li ,  Wei Zhao ,  Lan Xie

IPC: B60L58/16 ,  H02J7/00 ,  B60L53/62 ,  B60L58/13

CPC classification number: B60L58/16 ,  H02J7/005 ,  H02J7/0049 ,  H02J7/00714 ,  B60L53/62 ,  B60L58/13 ,  B60L2240/549

Abstract: Provided are a method for charging a traction battery and a battery management system. The method for charging the traction battery is applied to a battery management system, where the method includes: obtaining an SOH of the traction battery; in a charging process of the traction battery, obtaining an SOC of the traction battery; determining an SOC interval value corresponding to discharging or stopping being charged of the traction battery based on the SOH of the traction battery; and when the SOC of the traction battery changes by the SOC interval value, controlling the traction battery to discharge or stop being charged. Through the technical solution, in the charging process of the traction battery, the discharging or the stopping being charged of the traction battery can be controlled to reduce the risk of lithium precipitation in the traction battery and improve the safety performance of the traction battery.