Design of battery management system based on improved ampere-hour integration method
by Mingyue Zhang; Xiaobin Fan
International Journal of Electric and Hybrid Vehicles (IJEHV), Vol. 14, No. 1/2, 2022

Abstract: With the emergence of the energy crisis and environmental pollution problems, electric vehicles are paid more attention. As an important core component of electric vehicles, the battery management system (BMS) has also become a hot issue in current research. The BMS focuses on the state of charge (SOC) estimation and equalisation methods. A complete BMS in this paper includes the design of its software and hardware. The BMS uses the AT89C52 as the master chip and the DS2438 as the sampling chip and uses the improved ampere-hour (Ah) integration method based on the open-circuit voltage (OCV) method to estimate the SOC. Also, the relays were used to control switched capacitors for equalisation. Finally, we found that the sampling precision of the voltage, current and temperature are 0.4%, 0.5% and 0.5% respectively and that the equalisation time of the BMS is less than 250 s.

Online publication date: Mon, 05-Sep-2022

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Electric and Hybrid Vehicles (IJEHV):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com