The Simulation Analysis of the Capacity Loss of the High Power LiFePO4-graphite Li-ion Batteries under Different Charging Strategies

Chunhui  Liu; DeLong  Zhang; Wenke  Zha; Jixiang  Wang

doi:10.6180/jase.202407_27(7).0010

The Simulation Analysis of the Capacity Loss of the High Power LiFePO4-graphite Li-ion Batteries under Different Charging Strategies

Material Engineering Electrical Engineering

Chunhui LiuThis email address is being protected from spambots. You need JavaScript enabled to view it., DeLong Zhang, Wenke Zha, and Jixiang Wang

College of Mechanical Engineering, Anhui Science and Technology University, Fengyang 233100, China

Received: October 28, 2022
Accepted: October 4, 2023
Publication Date: November 5, 2023

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202407_27(7).0010

The capacity loss of the high power LiFePO₄-graphite (LFP-C) Li-ion batteries under four common different charging modes was investigated. First, the battery model coupled equivalent circuit, thermal and aging model was established. Then the validity of the battery model was verified by the experimental data. Finally, four common different charging strategies were given to simulate the capacity loss of the batteries. The simulation results showed that the recharge took place in the morning before the driver went to work and then underwent four electric vehicle NEDC cycles always had the minimal capacity loss, and that the recharge took place whenever the driver had time always had the maximum capacity loss.

Keywords: LiFePO4-graphite Li-ion batteries; equivalent circuit model; capacity loss model; charging strategies

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