- 专利标题: Methods and systems for accelerated determining of state of health using incremental capacity analysis
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申请号: US17205330申请日: 2021-03-18
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公开(公告)号: US11703548B2公开(公告)日: 2023-07-18
- 发明人: Aleksey Yezerets , Guodong Fan
- 申请人: Cummins Inc.
- 申请人地址: US IN Columbus
- 专利权人: CUMMINS INC.
- 当前专利权人: CUMMINS INC.
- 当前专利权人地址: US IN Columbus
- 代理机构: Faegre Drinker Biddle & Reath LLP
- 主分类号: G01R31/392
- IPC分类号: G01R31/392 ; G01R31/385
摘要:
Systems and methods for determining state of health (SOH) of a battery. For example, a method includes conditioning the battery by determining an initial state of charge of the battery; charging the battery from the initial state of charge to a first target state of charge via a predetermined multi-stage charging sequence; and determining SOH of the battery by charging the battery from the first target state of charge to a second target state of charge at an ICA charging rate; acquiring a voltage vs. capacity (QV) data of the battery during charging of the battery from the first target state of charge to the second target state of charge; obtaining an incremental capacity (IC) data based on at least the acquired QV data; pre-processing the IC data; extracting an incremental capacity analysis (ICA) peak from the IC data; and determining the SOH of the battery based upon the ICA peak.
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