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Accurate battery temperature prediction using self-training neural networks within embedded system

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  • Fan, Xinyuan
  • Zhang, Weige
  • Qi, Hongfeng
  • Zhou, Xingzhen

Abstract

The temperature of lithium-ion batteries is an essential factor in the performance and safety of the battery pack. By predicting batteries’ temperature, the battery management system (BMS) can optimize the strategy in advance, improve the precision of temperature control, and enhance the battery pack’s performance. A self-training feedforward neural network is proposed as a means of predicting the battery surface temperature 300 s later. By extracting knowledge-driven features from current and voltage data, the structure of the proposed method is greatly simplified, facilitating implementation in a real BMS. The model is capable of self-training and parameter updating at the edge side, addressing the issue of poor generalizability associated with pre-trained models. The proposed method was validated under a variety of temperatures and operating conditions. The root-mean-square error (RMSE) of battery temperature prediction is 0.55 °C for constant ambient temperature and 0.64 °C for varying ambient temperature. Predicting 100 battery temperatures takes only 94 ms, enabling the BMS of electric vehicles to realize real-time temperature prediction.

Suggested Citation

  • Fan, Xinyuan & Zhang, Weige & Qi, Hongfeng & Zhou, Xingzhen, 2024. "Accurate battery temperature prediction using self-training neural networks within embedded system," Energy, Elsevier, vol. 313(C).
    • Handle: RePEc:eee:energy:v:313:y:2024:i:c:s036054422403809x
    DOI: 10.1016/j.energy.2024.134031
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    References listed on IDEAS

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    1. Xie, Jiahang & Yang, Rufan & Hui, Shu-Yuen Ron & Nguyen, Hung D., 2024. "Dual Digital Twin: Cloud–edge collaboration with Lyapunov-based incremental learning in EV batteries," Applied Energy, Elsevier, vol. 355(C).
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    5. Liu, Yongjie & Huang, Zhiwu & Wu, Yue & Yan, Lisen & Jiang, Fu & Peng, Jun, 2022. "An online hybrid estimation method for core temperature of Lithium-ion battery with model noise compensation," Applied Energy, Elsevier, vol. 327(C).
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