Big Data-Based Early Fault Warning of Batteries Combining Short-Text Mining and Grey Correlation

Jinrui Nan, Bo Deng, Wanke Cao*, Jianjun Hu, Yuhua Chang, Yili Cai, Zhiwei Zhong

*此作品的通讯作者

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摘要

Considering the battery-failure-induced catastrophic events reported frequently, the early fault warning of batteries is essential to the safety of electric vehicles (EVs). Motivated by this, a novel data-driven method for early-stage battery-fault warning is proposed in this paper by the fusion of the short-text mining and the grey correlation. In particular, the short-text mining approach is exploited to identify the fault information recorded in the maintenance and service documents and further to analyze the categories of battery faults in EVs statistically. The grey correlation algorithm is employed to build the relevance between the vehicle states and typical battery faults, which contributes to extracting the key features of corresponding failures. A key fault-prediction model of electric buses based on big data is then established on the key feature variables. Different selections of kernel functions and hyperparameters are scrutinized to optimize the performance of warning. The proposed method is validated with real-world data acquired from electric buses in operation. Results suggest that the constructed prediction model can effectively predict the faults and carry out the desired early fault warning.

源语言英语
文章编号5333
期刊Energies
15
15
DOI
出版状态已出版 - 8月 2022

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Nan, J., Deng, B., Cao, W., Hu, J., Chang, Y., Cai, Y., & Zhong, Z. (2022). Big Data-Based Early Fault Warning of Batteries Combining Short-Text Mining and Grey Correlation. Energies, 15(15), 文章 5333. https://doi.org/10.3390/en15155333