bsebench-org/severson-2019-raw

Severson等人2019年商业LFP快速充电循环数据集的Tier 1原始镜像，包含124个A123 Systems APR18650M1A型18650圆柱形锂电池（LFP正极，石墨负极，标称容量1.1 Ah，标称电压3.3 V）在30°C恒温环境下进行快速充电循环测试的数据。充电策略采用一步或两步快速充电协议，充电倍率从1C到6C（对应充电至80% SOC需8至13.3分钟），放电统一为4C恒流至截止电压2.0 V。每个循环中，电池在充电达到80% SOC后静置1分钟，放电后静置1秒。内阻通过在每次循环中施加10个±3.6C、脉宽30或33 ms的脉冲进行测量。数据集包含三个.mat文件（HDF5 v7.3格式），分别对应2017-05-12、2017-06-30和2018-04-12三个批次，共约7.6 GB。该数据集用于时间序列预测和表格回归任务，可应用于电池荷电状态（SOC）和健康状态（SOH）估计、滤波基准测试等。数据集的原始文件保持了与丰田研究所数据门户发布的逐字节精确镜像，SHA-256摘要已记录在BSEBench清单中。Tier 1 raw mirror of the Severson et al. 2019 commercial LFP fastcharge cycling dataset, containing cycling data from 124 A123 Systems APR18650M1A cells (LFP cathode, graphite anode, nominal capacity 1.1 Ah, nominal voltage 3.3 V) cycled inside a 30 °C controlled environmental chamber. Charging was performed under one-step or two-step fast-charging policies spanning charge rates from 1C to 6C (corresponding to 8 to 13.3 minutes to reach 80 % SOC), with a total of 72 distinct fast-charging strategies. Discharging was uniform: 4C constant-current to the discharge cutoff (2.0 V). A 1-minute rest was enforced after reaching 80 % SOC during charging, and a 1-second rest after each discharge. Internal resistance was probed once per cycle by 10 pulses of ±3.6C with a pulse width of 30 or 33 ms. The dataset is distributed as three .mat files (HDF5 v7.3 format) totaling approximately 7.6 GB, corresponding to batches dated 2017-05-12 (46 cells), 2017-06-30 (48 cells), and 2018-04-12 (46 cells). This dataset is intended for time-series forecasting and tabular regression tasks, specifically for battery state-of-charge and state-of-health estimation, filter benchmarking, and related applications. The files are preserved bit-exact as published on the original Toyota Research Institute data portal, with SHA-256 digests recorded in the BSEBench manifest.