实现真实世界的健康状况评估:第 1 部分:使用锂离子电池实验室数据的电池级方法

IF 15 1区 工程技术 Q1 ENERGY & FUELS
Yufang Lu , Jiazhen Lin , Dongxu Guo , Jingzhao Zhang , Chen Wang , Guannan He , Minggao Ouyang
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引用次数: 0

摘要

对于锂离子电池(LIB)的电池管理系统(BMS)来说,准确而快速的健康状态(SOH)估算至关重要。鉴于电池类型和工作条件的多变性以及有限的数据样本,传统的数据驱动方法无法满足要求,尤其是在电动汽车和储能系统等实际应用中。为此,我们开发了一种基于元学习的方法,使用门控卷积神经网络-模型诊断元学习(GCNNs-MAML)模型来寻找合适的初始参数,通过少量训练就能快速适应新的给定乳头样本。它使用多个现有历史数据集进行元训练,然后使用训练模型的初始参数在新的小规模数据上进行元测试。GCNNs-MAML 模型仅从 5% 的骑行数据中随机抽取 800 秒的充电片段进行训练,在剩余 95% 的测试样本中,其 SOH 估计的平均有效误差率为 1.8%,最小有效误差率为 1.3%。结果表明,它明显优于基于特征和基于学习的方法。基于元学习的方法表现出高精度、鲁棒性和强大的泛化能力,这意味着它在现实世界的应用和少量样本条件下具有巨大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Towards real-world state of health estimation, Part 1: Cell-level method using lithium-ion battery laboratory data

Accurate and rapid state of health (SOH) estimation is crucial for battery management systems (BMS) in lithium-ion batteries (LIBs). Given the variability in battery types and operating conditions, along with limited data samples, conventional data-driven methods are inadequate to meet the requirements, especially in real-world applications, e.g., electric vehicles and energy storage systems. To this end, we develop a meta-learning-based method with a Gated Convolutional Neural Networks-Model-Agnostic Meta-Learning (GCNNs-MAML) model to seek proper initial parameters that can rapidly adapt to new given teat samples with few-shot training. It uses multiple existing historical datasets for meta-training, and then the initial parameters of the trained model are used for meta-testing on new small-scale data. With only random 800 s charging segments from 5% of the cycling data employed for training, the GCNNs-MAML model yields a SOH estimation with a mean RMSE of 1.8% and a minimal RMSE of 1.3% on the remaining 95% testing samples. The results indicate that it remarkably outperforms the feature-based and learning-based methods. The meta-learning-based method exhibits high precision, robustness, and strong generalization capacity, implying its enormous potential for real-world applications and few-shot conditions.

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来源期刊
Etransportation
Etransportation Engineering-Automotive Engineering
CiteScore
19.80
自引率
12.60%
发文量
57
审稿时长
39 days
期刊介绍: eTransportation is a scholarly journal that aims to advance knowledge in the field of electric transportation. It focuses on all modes of transportation that utilize electricity as their primary source of energy, including electric vehicles, trains, ships, and aircraft. The journal covers all stages of research, development, and testing of new technologies, systems, and devices related to electrical transportation. The journal welcomes the use of simulation and analysis tools at the system, transport, or device level. Its primary emphasis is on the study of the electrical and electronic aspects of transportation systems. However, it also considers research on mechanical parts or subsystems of vehicles if there is a clear interaction with electrical or electronic equipment. Please note that this journal excludes other aspects such as sociological, political, regulatory, or environmental factors from its scope.
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