Research Article
Multi-scenario deep learning-based framework to estimate the remaining charge time of lithium-ion power batteries
Chain | Vol.1, Issue 3, 2024 |
pp. 229-248
The accurate estimation of the remaining charge time (RCT) is essential in a battery
management system (BMS), because it guarantees the safety and dependability of the
power battery systems of new energy vehicles. However, the direct estimation of RCT
is challenging because of the variability of actual charging scenarios and the complex
charging process, which complicates the estimation of RCT in actual scenarios. Hence,
this paper proposes an estimation framework based on deep learning for multi-scenario
charging data to estimate the remaining charging times. Through an in-depth analysis
of multi-scenario charging data, the RCT of the charging process is estimated using
the temporal convolutional network (TCN) model, which has a strong generalization
ability. Additionally, a dynamic learning rate (DLR) mechanism and an early stopping
strategy (ES) are designed in the TCN model (DLR-ES TCN) for the nonlinear characteristics
of the battery system to balance the relationship between model convergence speed
and accuracy. Finally, compared with the traditional TCN model and four common deep
learning models under three different scenarios, the experimental results show the
mean absolute percentage error (MAPE) of the proposed method is less than 2%, indicating
better accuracy and stability. This research can improve the safety monitoring of
power batteries when applied to various target domains.
DOI: 10.23919/CHAIN.2024.000002 Cited: 3 Download: 0
