Beatty Matthew, Strickland Dani, Warren Joe, Chan John, Ferreira Pedro
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, LE11 3TU, UK.
Powervault, Unit 9, Garrick Industrial Centre, Irving Way, London, NW9 6AQ, UK.
Sci Data. 2025 Jun 23;12(1):1068. doi: 10.1038/s41597-025-05360-7.
This paper describes a long-term cycling dataset of repurposed lithium-ion batteries originally used in electric vehicles. After their initial automotive use - referred to as their "first life" - these batteries were redeployed for stationary energy storage applications, representing their "second life". The dataset covers six distinct use cases modelled to represent real-world energy storage applications. Unlike other published datasets, which focus on new or first-life cells, this work exclusively features second-life batteries with no available data from prior usage. It is aimed at supporting research into battery degradation, state of health prediction, and performance benchmarking under aged conditions. Data was collected using a Chroma 17020 batter cycler and originally stored as large, continuous log files. This paper outlines the steps taken to reorganise and clean the data - handling missing values and segmenting it into individual cycles - while preserving its raw experimental content. Cycling occurred intermittently between 2019 and 2025, offering a uniquely long observation period. The dataset supports both academic and industrial research into battery ageing and second-life applications.
本文描述了一个由最初用于电动汽车的废旧锂离子电池构成的长期循环数据集。在其最初的汽车用途（即“第一生命”）之后，这些电池被重新部署用于固定储能应用，即它们的“第二生命”。该数据集涵盖六个不同的用例，这些用例经过建模以代表实际的储能应用。与其他已发表的数据集不同，其他数据集关注的是新的或处于“第一生命”阶段的电池，而这项工作专门以“第二生命”电池为特色，且没有先前使用情况的可用数据。其目的是支持对电池老化、健康状态预测以及老化条件下性能基准测试的研究。数据是使用Chroma 17020电池循环仪收集的，最初存储为大型连续日志文件。本文概述了为重新组织和清理数据所采取的步骤——处理缺失值并将其分割成单个循环——同时保留其原始实验内容。循环在2019年至2025年期间间歇性地进行，提供了一个独特的长期观测期。该数据集支持对电池老化和“第二生命”应用的学术研究和工业研究。
