Issue 8, 2018

An optimal multistage charge strategy for commercial lithium ion batteries

Abstract

Herein, an optimal multistage charge strategy for commercial lithium ion batteries is proposed to enhance the performance of electric vehicles and hybrid electric vehicles. The strategy includes four stages of constant current charge and short constant voltage (CV) charge time. Equivalent circuit model (ECM) and capacity fade analysis are used to search for optimal charge profiles. The results indicate that the parameters of ECM change with SOC and over battery lifetime. The charge time simulation based on ECM is still accurate enough to obtain fast charging after hundreds of cycles. The charge capacity depends on the final stage charge rate and CV charge time. The maximum temperature during charging and the temperature at the end of charging, which are related to the first and fourth stage charge rates, respectively, have different effects on the capacity fading. The influence of the maximum temperature on the capacity fading changes over the battery lifetime, which may be because the capacity fading mechanisms of the battery change over the battery lifetime. Thus, the charge profiles should be suitable at different periods. CV charging prolongs the cycle life when its time is suitable value. Considering all the results and practicality, optimal values of charge can be acquired to obtain fast charging, less charge capacity loss and long cycle life.

Graphical abstract: An optimal multistage charge strategy for commercial lithium ion batteries

Article information

Article type
Paper
Submitted
08 رمضان 1439
Accepted
13 رمضان 1439
First published
13 رمضان 1439

Sustainable Energy Fuels, 2018,2, 1726-1736

An optimal multistage charge strategy for commercial lithium ion batteries

J. Liu, Q. Duan, H. Chen, J. Sun and Q. Wang, Sustainable Energy Fuels, 2018, 2, 1726 DOI: 10.1039/C8SE00235E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements