期刊
ENERGY
卷 236, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.121360
关键词
Tate of charge; Lithium-ion battery; Electric vehicles; Battery management system; Recurrent neural network
资金
- National Natural Science Foundation of China [51775450]
- Sichuan Science and Technology Program [2020JDTD0012]
This paper presents a novel neural network structure called CWRNN, which effectively addresses long-term dependencies, reduces training and computation costs, and is validated under different temperature conditions.
State of charge (SOC) is the most important parameter in battery management system (BMS). Firstly, in this paper, a new structure of standard recurrent neural network (RNN), named clockwork recurrent neural network (CWRNN) is introduced, which divides hidden layer into separate modules, assigns each module a different specify clock speed to solve long-term dependencies. Secondly, because of each module in CWRNN has different clock speeds, it makes computation only at its prescribed clock period, rather than compute and update all the inner parameters at every time step, so that CWRNN can reduce the training and computation cost obviously. Finally, employed network is verified at dynamic drive cycle at different temperature. The result shows that proposed network has satisfactory estimation results, such as the root mean square error (RMSE) is less than 1.29%. (c) 2021 Elsevier Ltd. All rights reserved.
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