While the constant current charge time (CCCT) and constant voltage charge time (CVCT) are increasingly used for the state of health (SOH) estimation of Li-ion batteries, their correlations with battery degradation are not investigated comprehensively. This paper develops an analytical model to quantify the chargeable capacity of a Li-ion battery under a CC-CV profile, in which CCCT and CVCT are identified as two uncoupled parameters. The model is verified using a battery dataset of cycling tests subjected to 19 different test conditions with different discharge currents, ambient temperatures, and rest times. The behaviors of CCCT and CVCT during battery degradation are studied in terms of chargeable capacity fade. A new health indicator, the CV-CC time ratio, is developed for degradation analysis. Two partial CC-CV cases are also considered in the studies: in one case, the partial CC-CV charge starts after different discharged depths, and in the other case, different fast charging policies are executed before the partial CC-CV charge.

虽然恒定电流充电时间（CCCT）和恒定电压充电时间（CVCT）越来越多地用于锂离子电池的健康状态（SOH）估计，但并未全面研究它们与电池退化的相关性。本文建立了一个分析模型来量化在CC-CV曲线下锂离子电池的可充电容量，其中CCCT和CVCT被确定为两个非耦合参数。该模型使用循环测试的电池数据集进行了验证，该数据集在19种不同的测试条件下，具有不同的放电电流，环境温度和休息时间。从可充电容量衰减的角度研究了CCCT和CVCT在电池退化期间的行为。开发了一种新的健康指标CV-CC时间比率，以进行降级分析。