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首页> 外文期刊>Journal of power sources >A unified open-circuit-voltage model of lithium-ion batteries for state-of-charge estimation and state-of-health monitoring
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A unified open-circuit-voltage model of lithium-ion batteries for state-of-charge estimation and state-of-health monitoring

机译:锂离子电池的统一开路电压模型,用于充电状态估计和健康状态监视

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摘要

Open-circuit-voltage (OCV) data is widely used for characterizing battery properties under different conditions. It contains important information that can help to identify battery state-of-charge (SOC) and state-of-health (SOH). While various OCV models have been developed for battery SOC estimation, few have been designed for SOH monitoring. In this paper, we propose a unified OCV model that can be applied for both SOC estimation and SOH monitoring. Improvements in SOC estimation using the new model compared to other existing models are demonstrated. Moreover, it is shown that the proposed OCV model can be used to perform battery SOH monitoring as it effectively captures aging information based on incremental capacity analysis (ICA). Parametric analysis and model complexity reduction are also addressed. Experimental data is used to illustrate the effectiveness of the model and its simplified version in the application context of SOC estimation and SOH monitoring.
机译:开路电压(OCV)数据被广泛用于表征不同条件下的电池特性。它包含重要信息,可以帮助识别电池充电状态(SOC)和健康状态(SOH)。尽管已开发出各种OCV模型用于电池SOC估算,但很少有人设计用于SOH监控。在本文中,我们提出了一个可用于SOC估计和SOH监控的统一OCV模型。演示了与其他现有模型相比,使用新模型进行的SOC估计的改进。此外,表明所提出的OCV模型可用于执行电池SOH监视,因为它可以基于增量容量分析(ICA)有效地捕获老化信息。还讨论了参数分析和模型复杂度降低的问题。实验数据用于说明该模型及其简化版本在SOC估计和SOH监测的应用环境中的有效性。

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