Open circuit voltage and state of charge relationship functional optimization for the working state monitoring of the aerial lithium-ion battery pack.
Wang, Shun-Li; Fernandez, Carlos; Zou, Chuan-Yun; Yu, Chun-Mei; Li, Xiao-Xia; Pei, Shi-Jie; Xie, Wei
The aerial lithium-ion battery pack works differently from the usual battery packs, the working characteristic of which is intermittent supplement charge and instantaneous large current discharge. An adaptive state of charge estimation method combined with the output voltage tracking strategy is proposed by using the reduced particle - unscented Kalman filter, which is based on the reaction mechanism and experimental characteristic analysis. The improved splice equivalent circuit model is constructed together with its state-space description, in which the operating characteristics can be obtained. The relationship function between the open circuit voltage and the state of charge is analyzed and especially optimized. The feasibility and accuracy characteristics are tested by using the aerial lithium-ion battery pack experimental samples with seven series-connected battery cells. Experimental results show that the state of charge estimation error is less than 2.00%. The proposed method achieves the state of charge estimation accurately for the aerial lithium-ion battery pack, which provides a core avenue for its high-power supply security.
|Journal Article Type||Article|
|Publication Date||Oct 10, 2018|
|Journal||Journal of cleaner production|
|Peer Reviewed||Peer Reviewed|
|Institution Citation||WANG, S.-L., FERNANDEZ, C., ZOU, C.-Y., YU, C.-M., LI, X.-X., PEI, S.-J. and XIE, W. 2018. Open circuit voltage and state of charge relationship functional optimization for the working state monitoring of the aerial lithium-ion battery pack. Journal of cleaner production [online], 198, pages 1090-1104. Available from: https://doi.org/10.1016/j.jclepro.2018.07.030|
|Keywords||Lithiumion battery pack; Open circuit voltage; Working state monitoring; State of charge estimation; Unscented Kalman filter|
WANG 2018 Open circuit voltage
You might also like
Coherent interface strengthening of ultrahigh pressure heat-treated Mg-Li-Y alloys.