Operational reliability and economy evaluation of reusing retired batteries in composite power systems,International Journal of Energy Research

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Operational reliability and economy evaluation of reusing retired batteries in composite power systems
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-01-28 , DOI: 10.1002/er.5147
Xiaolin Chen ₁ , Junjie Tang ₁ , Wenyuan Li ₁ , Le Xie ₂

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To support a long‐term sustainable electric future, there is ongoing development of electric vehicles, and thus, a serious problem is rising regarding recycling and the echelon application of batteries retired from electric vehicles. Herein, we propose to reuse such retired vehicle batteries as large‐scale storage, based on which the operational reliability and the economy of composite generation and transmission systems are analyzed. In details, Gaussian functions were fitted according to data obtained using a holistic aging model. The proposed aging method simulated the capacity degradation of the retired batteries, with a low state of health, under various operating conditions. A universal generating function was adopted for probabilistic modeling of the capacity for battery modules consisting of hundreds of cells. The feasibility and effectiveness of using retired batteries in composite power systems were verified. The test results show that a significant investment can be saved, and system reliability improved, compared with systems without retired batteries. Finally, a method for scheduling the second retirement of retired batteries was established from the perspective of asset management.

中文翻译：

复合电力系统中报废电池的重复使用的运行可靠性和经济性评估

为了支持长期可持续的电动未来，电动汽车正在不断发展，因此，从电动汽车退役的电池的回收利用和梯队应用方面出现了严重的问题。在此，我们建议将这种报废的汽车电池用作大型存储设备，在此基础上，分析复合发电和输电系统的运行可靠性和经济性。详细地，根据使用整体老化模型获得的数据拟合高斯函数。所提出的老化方法模拟了在各种工作条件下健康程度较低的退休电池的容量退化。通过通用生成函数对由数百个电池组成的电池模块的容量进行概率建模。验证了在复合动力系统中使用退役电池的可行性和有效性。测试结果表明，与没有淘汰电池的系统相比，可以节省大量投资，并提高了系统可靠性。最后，从资产管理的角度出发，建立了对报废电池二次报废进行调度的方法。

更新日期：2020-01-28

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