Modelling the degradation process of lithium-ion batteries when operating at erratic state-of-charge swing ranges

2017 ◽  
Author(s):  
Aramis Perez ◽  
Vanessa Quintero ◽  
Heraldo Rozas ◽  
Francisco Jaramillo ◽  
Rodrigo Moreno ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Degradation Process ◽  
State Of Charge

State of charge estimation for lithium-ion batteries using dynamic neural network based on sine cosine algorithm

2021 ◽  
pp. 095440702110180
Author(s):  
Meng Wei ◽  
Min Ye ◽  
Jia Bo Li ◽  
Qiao Wang ◽  
Xin Xin Xu
Keyword(s):  
Neural Network ◽  
Lithium Ion Batteries ◽  
Unscented Kalman Filter ◽  
Lithium Ion ◽  
State Of Charge ◽  
Support Vector ◽  
Battery Management System ◽  
Dynamic Neural Network ◽  
Soc Estimation ◽  
Sine Cosine Algorithm

State of charge (SOC) of the lithium-ion batteries is one of the key parameters of the battery management system, which the performance of SOC estimation guarantees energy management efficiency and endurance mileage of electric vehicles. However, accurate SOC estimation is a difficult problem owing to complex chemical reactions and nonlinear battery characteristics. In this paper, the method of the dynamic neural network is used to estimate the SOC of the lithium-ion batteries, which is improved based on the classic close-loop nonlinear auto-regressive models with exogenous input neural network (NARXNN) model, and the open-loop NARXNN model considering expected output is proposed. Since the input delay, feedback delay, and hidden layer of the dynamic neural network are usually selected by empirically, which affects the estimation performance of the dynamic neural network. To cover this weakness, sine cosine algorithm (SCA) is used for global optimal dynamic neural network parameters. Then, the experimental results are verified to obtain the effectiveness and robustness of the proposed method under different conditions. Finally, the dynamic neural network based on SCA is compared with unscented Kalman filter (UKF), back propagation neural network based on particle swarm optimization (BPNN-PSO), least-squares support vector machine (LS-SVM), and Gaussian process regression (GPR), the results show that the proposed dynamic neural network based on SCA is superior to other methods.

scholarly journals Combined CNN-LSTM Network for State-of-Charge Estimation of Lithium-Ion Batteries

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 88894-88902 ◽  
Author(s):  
Xiangbao Song ◽  
Fangfang Yang ◽  
Dong Wang ◽  
Kwok-Leung Tsui
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
State Of Charge ◽  
Lstm Network ◽  
State Of Charge Estimation

DC-AC hybrid rapid heating method for lithium-ion batteries at high state of charge operated from low temperatures

Energy ◽  
2022 ◽  
Vol 238 ◽  
pp. 121809
Author(s):  
Shanshan Guo ◽  
Ruixin Yang ◽  
Weixiang Shen ◽  
Yongsheng Liu ◽  
Shenggang Guo
Keyword(s):  
Lithium Ion Batteries ◽  
Low Temperatures ◽  
Rapid Heating ◽  
Lithium Ion ◽  
State Of Charge ◽  
High State ◽  
Heating Method
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