NASA lithium ion battery dataset

This data set has been collected from a custom built battery prognostics testbed at the NASA Ames Prognostics Center of Excellence (PCoE). Li-ion batteries were run through 3 different operational profiles (charge, discharge and Electrochemical Impedance Spectroscopy) at different temperatures. Discharges were carried out at different current load levels until the battery voltage fell to preset voltage thresholds. Some of these thresholds were lower than that recommended by the OEM (2.7 V) in order to induce deep discharge aging effects. Repeated charge and discharge cycles result in accelerated aging of the batteries. The experiments were stopped when the batteries reached the end-of-life (EOL) criteria of 30% fade in rated capacity (from 2 Ah to 1.4 Ah).

本数据集采集自美国国家航空航天局（NASA）艾姆斯研究中心卓越预测中心（Prognostics Center of Excellence, PCoE）定制搭建的电池预后测试平台。锂离子电池在不同温度条件下，分别执行充电、放电以及电化学阻抗谱（Electrochemical Impedance Spectroscopy）三种运行工况。放电过程以不同电流负载等级进行，直至电池电压降至预设阈值。为诱导深度放电老化效应，部分阈值低于原始设备制造商（Original Equipment Manufacturer, OEM）推荐的2.7V标准。反复的充放电循环会加速电池老化进程。当电池额定容量衰减至初始2Ah的70%（即降至1.4Ah），达到30%容量衰减的寿命终止（End-of-Life, EOL）标准时，实验终止。

搜集汇总

背景与挑战

背景概述

该数据集包含NASA Ames预测中心收集的锂离子电池在不同温度下的充放电和阻抗谱数据，详细记录了电池运行参数，适用于电池老化研究和健康状态预测。