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A GRU-RNN based momentum optimized algorithm for SOC estimation

Jiao, Meng, Wang, Dongqing, Qiu, Jianlong·2020·Journal of Power Sources

Abstract

Abstract For a lithium battery, a gated recurrent unit recurrent neural network (GRU-RNN) based momentum gradient method is investigated to estimate its state of charge (SOC). In the momentum gradient method, the current weight change direction takes a compromise of the gradient direction at current instant and at historical time to prevent the oscillation of the weight change and to improve the SOC estimation speed. The details include: (1) construct a GRU-RNN model for estimating SOC by taking the measured voltage and current as the inputs, and the estimated SOC as the output of the GRU-RNN; (2) to promote the SOC convergence speed, explore the momentum gradient algorithm to optimize the weights of the network by introducing a momentum term; (3) to prevent overfitting and to improve generalization ability of the GRU-RNN model, add noises to the sample data, so as to improve the SOC estimation accuracy; (4) set up a lithium battery test platform to sample data in battery discharge process and to implement MATLAB simulation. The simulation results verify that the momentum optimized GRU-RNN model can accurately and effectively estimate the SOC of the lithium battery.

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Metadata

Authors
Jiao, M., Wang, D., & Qiu, J.
Venue
Journal of Power Sources
Publisher
Elsevier BV
Published
2020-05
Volume
459
Pages
228051
ISSN
0378-7753 (ISSN-L)
OpenAlex
W3012958665
Cited by
320
References
8
FWCI
14.87
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A GRU-RNN based momentum optimized algorithm for SOC estimation. https://app.cochat.ai/papers/10.1016/j.jpowsour.2020.228051
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Jiao, M., Wang, D., & Qiu, J. (2020). A GRU-RNN based momentum optimized algorithm for SOC estimation. Journal of Power Sources. https://doi.org/10.1016/j.jpowsour.2020.228051

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