Randomized Battery Usage 6: 40C Left Skewed Random Walk

This dataset is part of a series of datasets, where batteries are continuously cycled with randomly generated current profiles. Reference charging and discharging cycles are also performed after a fixed interval of randomized usage to provide reference benchmarks for battery state of health.

In this dataset, four 18650 Li-ion batteries (Identified as RW21, RW22, RW23 and RW24) were continuously operated by repeatedly charging them to 4.2V and then discharging them to 3.2V using a randomized sequence of discharging currents between 0.5A and 5A. This type of discharging profile is referred to here as random walk (RW) discharging. A customized probability distribution is used in this experiment to select a new load setpoint every 1 minute during RW discharging operation. The custom probability distribution was designed to be skewed towards selecting lower currents. The ambient temperature at which the batteries are cycled was held at approximately 40C for these experiments.

本数据集为一系列数据集的一部分，其中电池通过随机生成的电流曲线进行连续充放电循环。在随机使用固定间隔后，还会进行参考充放电循环，以提供电池健康状况的参考基准。在该数据集中，对四块18650型锂离子电池（分别标识为RW21、RW22、RW23和RW24）进行了连续操作，通过反复将其充电至4.2V，然后以介于0.5A至5A之间的随机放电电流进行放电。此类放电曲线在本研究中被称为随机游走（RW）放电。在RW放电操作过程中，每分钟使用定制的概率分布选择一个新的负载设定点。该定制概率分布被设计为偏向于选择较低电流。在电池进行充放电的周围环境温度被保持在约40摄氏度进行这些实验。