在锂离子电池的生产及应用过程中，电性能检测是不可或缺的重要环节。锂离子电池的电性能检测是保障其安全性和推动其研发进程的核心环节。本研究针对锂离子电池关键电性能指标（容量、容量保持率、循环稳定性）的检测需求，采用多组充放电循环测试方案，采集不同充放电方案的数据，绘制相应的电压-容量曲线、容量衰减曲线。测试表明：温度、截止电压和倍率等测试条件均会对锂离子电池的容量保持率产生影响，且锂离子电池寿命会因此下降。通过数据可视化生成的衰减曲线，可清晰识别电池的容量衰减过程。该研究不仅为锂离子电池的筛选提供量化依据，也为锂离子电池的研发提供数据支持。

In the production and application of lithium-ion batteries,electrical performance testing is an indispensable and crucial step.Electrical performance testing of lithium-ion batteries is a core aspect that ensures their safety and optimizes research and development.This study addresses the testing requirements for key electrical performance indicators(capacity,capacity retention rate,cycle stability) of lithium-ion batteries by employing multiple charge-discharge cycling test schemes.By collecting data under different charge-discharge schemes,corresponding voltage-capacity curves and capacity fade curves are plotted.The tests show that testing conditions such as temperature,cut-off voltage,and rate all affect the capacity retention rate of lithium-ion batteries,leading to a noticeable decrease in battery life.The decay curves generated through data visualization clearly identify the process of battery capacity fade.This study not only provides quantitative criteria for screening lithium-ion batteries but also offers data support for their research and development.