A Voltage Prediction Method of LiFePO4 Batteries on Electric Vehicle During the Relaxation State after Discharging
- DOI
- 10.2991/icmmcce-17.2017.159How to use a DOI?
- Keywords
- Electric Vehicles; Lithium Iron Phosphate; Open-circuit Voltage; Prediction.
- Abstract
As the electric vehicle experiences the acceleration and deceleration periods alternately, the power battery open-circuit voltage at the relaxation stte after discharging varies greatly, which brings difficulties in measuring the state of charge(SOC) and causes measurement errors. To solve this problem, a certain type of LiFePO4 battery is taken as the research object. Based on electrochemistry and equivalent circuit theory, this research studies the relation between the open-circuit voltage at the relaxation stage after discharging of the LiFePO4 battery in moving electric vehicle and time. Combined with system identification method, an open-circuit voltage prediction model of lithium iron phosphate batteries is established, and experiment has been carried out to verify the feasibility of the model.
- Copyright
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Jun-wei Hou AU - Li-fu Gong PY - 2017/09 DA - 2017/09 TI - A Voltage Prediction Method of LiFePO4 Batteries on Electric Vehicle During the Relaxation State after Discharging BT - Proceedings of the 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2017) PB - Atlantis Press SP - 890 EP - 895 SN - 2352-5401 UR - https://doi.org/10.2991/icmmcce-17.2017.159 DO - 10.2991/icmmcce-17.2017.159 ID - Hou2017/09 ER -