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Innovative Incremental Capacity Analysis Implementation for C/LiFePO4 Cell State-of-Health Estimation in Electrical Vehicles

Abstract : This paper presents a fully embedded state of health (SoH) estimator for widely used C/LiFePO4 batteries. The SoH estimation study was intended for applications in electric vehicles (EV). C/LiFePO4 cells were aged using pure electric vehicle cycles and were monitored with an automotive battery management system (BMS). An online capacity estimator based on incremental capacity analysis (ICA) is developed. The proposed estimator is robust to depth of discharge (DoD), charging current and temperature variations to satisfy real vehicle requirements. Finally, the SoH estimator tuned on C/LiFePO4 cells from one manufacturer was tested on C/LiFePO4 cells from another LFP (lithium iron phosphate) manufacturer.
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https://hal.archives-ouvertes.fr/hal-02131856
Contributor : Pascal Venet Connect in order to contact the contributor
Submitted on : Thursday, May 16, 2019 - 3:59:46 PM
Last modification on : Tuesday, January 4, 2022 - 5:57:32 AM

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Elie Riviere, Ali Sari, Pascal Venet, Frédéric Meniere, yann Bultel. Innovative Incremental Capacity Analysis Implementation for C/LiFePO4 Cell State-of-Health Estimation in Electrical Vehicles. Batteries, MDPI, 2019, 5 (2), pp.37. ⟨10.3390/batteries5020037⟩. ⟨hal-02131856⟩

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