基于动态规整与改进变分自编码器的异常电池在线检测方法

Translated title of the contribution: Abnormal Battery On-line Detection Method Based on Dynamic Time Warping and Improved Variational Auto-Encoder

Tiefeng Guo, Jianjun He, Shuai Shen, Xiang Wang, Binhan Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In the process of battery production, the traditional detection accuracy of abnormal batteries is poor, and the offline anomaly detection method after production is inefficient. To solve these problems, a lithium battery anomaly online detection method integrating Long Short-Term Memory Variational AutoEncoder and Dynamic Time Warping evaluation (VAE-LSTM-DTW) is proposed, which realizes the online detection of abnormal battery conditions and prevents the time and energy wastage caused by offlize anomaly detection. Firstly, the Long Short-Term Memory (LSTM) is introduced into the Variational Auto-Encoder (VAE) model to train the battery time series reconstruction model. Secondly, in battery anomaly detection, the Dynamic Time Warping value (DTW) is introduced into the evaluation index, and the optimal detection threshold is obtained based on Bayesian optimization, and the dynamic warping value of each single battery reconstruction data is abnormally identified. The experimental results indicate that, compared with the traditional anomaly detection methods in this field, the VAE-LSTM-DTW model has superior performance, the accuracy rate and F1-score have been greatly improved, and it has high effectiveness and practicability.

Translated title of the contributionAbnormal Battery On-line Detection Method Based on Dynamic Time Warping and Improved Variational Auto-Encoder
Original languageChinese (Simplified)
Pages (from-to)738-747
Number of pages10
JournalDianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
Volume46
Issue number2
DOIs
Publication statusPublished - Feb 2024
Externally publishedYes

Keywords

  • Anomaly detection
  • Bayesian optimization
  • Dynamic Time Warping(DTW)
  • Lithium battery
  • Long Short-Term Memory(LSTM)
  • Variational Auto-Encoder(VAE)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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