公开(公告)号：US20230398902A1

公开(公告)日：2023-12-14

申请号：US18458164

申请日：2023-08-30

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Shan Huang ,  Shichao Li ,  Haili Li ,  Wei Zhao ,  Lan Xie

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

CPC分类号： B60L58/16 ,  H02J7/005 ,  H02J7/0049 ,  H02J7/00714 ,  B60L53/62 ,  B60L58/13 ,  B60L2240/549

摘要： 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.

公开(公告)号：US12051934B2

公开(公告)日：2024-07-30

申请号：US17563513

申请日：2021-12-28

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Yu Yan ,  Xiyang Zuo ,  Zhimin Dan ,  Haili Li ,  Shan Huang ,  Shichao Li

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

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

摘要： 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

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Shan Huang ,  Shichao Li ,  Haili Li ,  Wei Zhao ,  Zhen Lin

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

CPC分类号： H02J7/0048 ,  B60L58/13 ,  H01M10/425 ,  H01M10/44 ,  H01M2010/4271 ,  H01M2220/20

摘要： 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：US20230402868A1

公开(公告)日：2023-12-14

申请号：US18458168

申请日：2023-08-30

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Shan Huang ,  Shichao Li ,  Haili Li ,  Wei Zhao ,  Lan Xie

IPC分类号： H02J7/00

CPC分类号： H02J7/007194 ,  H02J7/0049 ,  H02J7/005 ,  H02J7/00714

摘要： 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.