发明公开
- 专利标题： BATTERY PACK OCV-SOC CURVE UPDATE METHOD, BATTERY MANAGEMENT SYSTEM AND VEHICLE
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申请号： EP20904212.6申请日： 2020-09-25
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公开(公告)号： EP3930075A1公开(公告)日： 2021-12-29
- 发明人: TANG, Shenzhi , DU, Mingshu , LI, Shichao , RUAN, Jian
- 申请人： Contemporary Amperex Technology Co., Limited
- 申请人地址： CN Fujian PRC 352100 2 Xin'gang Road Zhangwan Town Jiaocheng District Ningde City
- 代理机构： Heimdal, Pär
- 优先权： CN201911328552 20191220
- 国际公布： WO2021120769 20210624
- 主分类号： H01M10/42
- IPC分类号： H01M10/42 ; G01R31/36
摘要：
This application relates to the field of battery technologies, and discloses a method for updating an OCV-SOC curve of a battery pack, a battery management system, and a vehicle. The method for updating an OCV-SOC curve of a battery pack includes: obtaining information that represents an aging state of the battery pack; obtaining a current aging characteristic parameter of the battery pack based on a current OCV-SOC curve of the battery pack and the information; and updating the OCV-SOC curve of the battery pack based on the current aging characteristic parameter and the current OCV-SOC curve of the battery pack. In this application, the OCV-SOC curve of the battery pack is updated based on the aging state of the battery pack, thereby obtaining an OCV-SOC curve that meets the aging state of the battery pack and making it convenient to estimate the online state of the battery pack more accurately.
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