Study on the Effect of High Temperature and High-Current Rate on Fast Charging of Lithium-ion Batteries

Yin, Peixin; Wang, Nan; Shang, Yang; Gu, Pingwei; Duan, Bin

doi:10.23919/ccc52363.2021.9550628

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…The results showed that after 800 cycles, the cells lost 36% of their initial capacity at 45 • C. The results also showed that cells cycled at 55 • C lost more than 70% of their initial capacity after 600 cycles. Experimentation was conducted in a lithium-ion battery at high temperatures and current rates in [19]. It was reported that the experimental data obtained from charging the battery at 6C to the designated capacity showed a 240-s charging time improvement (580 s vs. 820 s) at 55 • C, compared with 25 • C. This result might indicate that the charging time of the battery improves when the temperature rises; however, internal battery degradation is not reported, which is a significant omission.…”

Section: Literature Reviewmentioning

confidence: 99%

Determining Fast Battery Charging Profiles Using an Equivalent Circuit Model and a Direct Optimal Control Approach

Gonzalez-Saenz,

Becerra

2024

Energies

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This work used an electrical equivalent circuit model combined with a temperature model and computational optimal control methods to determine minimum time charging profiles for a lithium–ion battery. To effectively address the problem, an optimal control problem formulation and direct solution approach were adopted. The results showed that, in most cases studied, the solution to the battery’s fast-charging problem resembled the constant current–constant voltage (CC-CV) charging protocol, with the advantage being that our proposed approach optimally determined the switching time between the CC and CV phases, as well as the final time of the charging process. Considering path constraints related to the terminal voltage and temperature gradient between the cell core and case, the results also showed that additional rules could be incorporated into the protocol to protect the battery against under/over voltage-related damage and high-temperature differences between the core and its case. This work addressed several challenges and knowledge gaps, including emulating the CC-CV protocol using a multi-phase optimal control approach and direct collocation methods, and improving it by including efficiency and degradation terms in the objective function and safety constraints. To the authors’ knowledge, this is the first time the CC-CV protocol has been represented as the solution to a multi-phase optimal control problem.

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Section: Literature Reviewmentioning

confidence: 99%

Determining Fast Battery Charging Profiles Using an Equivalent Circuit Model and a Direct Optimal Control Approach

Gonzalez-Saenz,

Becerra

2024

Energies

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Effect of High-Temperature Thermal Management on Degradation of Li-Ion Battery for Fast Charging

Park,

Song,

Kang

et al. 2024

IEEE Trans. Transp. Electrific.

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Research and Development Review of Power Converter Topologies and Control Technology for Electric Vehicle Fast-Charging Systems

Zhou

et al. 2023

Electronics

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With the rapid development of the electric vehicle (EV) industry, charging facilities for electric vehicles are gradually improving, thus meeting the demand for fast and safe charging. This paper comprehensively describes the current development status and future development trend of EVs and their charging infrastructure and analyzes in detail the EV fast-charging system architecture according to the AC/DC coupling configuration. The topologies and control techniques of the front AC/DC converter and rear DC/DC converter for the charging system are discussed, providing a reference for the future design of hundred-kilowatt level and above fast-charging systems for EVs. In addition, this paper summarizes the EV charging interface and the charging specifications applicable to the hundred-kilowatt power fast-charging system, as well as the impact of fast charging on power batteries, and emphasizes that high-power fast-charging technology is an inevitable trend for the future development of electric vehicles.

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Study on the Effect of High Temperature and High-Current Rate on Fast Charging of Lithium-ion Batteries

Cited by 3 publications

References 19 publications

Determining Fast Battery Charging Profiles Using an Equivalent Circuit Model and a Direct Optimal Control Approach

Determining Fast Battery Charging Profiles Using an Equivalent Circuit Model and a Direct Optimal Control Approach

Effect of High-Temperature Thermal Management on Degradation of Li-Ion Battery for Fast Charging

Research and Development Review of Power Converter Topologies and Control Technology for Electric Vehicle Fast-Charging Systems

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