A Comprehensive Second-Life Review of Electric Vehicle Batteries - A Brazilian Study Case

A. Moreira, Daniel Robson Pinto, M. Rosolem, Luiz Rolim, M. S. Medrano, Eduardo Penteado Lacusta Junior
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引用次数: 1

Abstract

In terms of their high round-trip efficiency and energy density, LiBs can be used for long periods before reaching the end of their useful life. These aspects make them an extremely attractive option for application in EVs, in which they can be used for an estimated period of a decade. However, when removed from these vehicles, as they no longer provide the necessary requirements for this application, the batteries still have about 80% of their available storage capacity. For this reason, combined with its internal characteristics and the massive application in electric mobility, it is estimated that a significant portion of the batteries removed from EVs will be destined for a second use. In this scenario, CPFL Energia, in cooperation with CPQD and BYD Brazil, is developing an R&D project, which aims to assess the remaining useful life of LiBs removed from EVs in a second application. The EV batteries can be reused in stationary energy storage systems, which was the application considered to carry out an economic analysis that allowed the pricing of second-life cells at US$ 90.1/kWh. Thus, in parallel, laboratory tests were performedto characterize the cells, and algorithms are being developed to be integrated in these systems, with the purpose of allow the analysis of their health status and the forecast of remaining useful life in this second use, which is the motivation for the elaboration of this paper.
电动汽车电池的全面第二生命回顾-巴西研究案例
就其高往返效率和能量密度而言,lib可以在达到其使用寿命之前使用很长时间。这些方面使它们成为电动汽车应用的极具吸引力的选择,它们可以在电动汽车中使用大约十年。然而,当从这些车辆上卸下时,由于它们不再提供这种应用的必要要求,电池仍然有大约80%的可用存储容量。因此,结合其内部特性和在电动汽车中的大规模应用,估计从电动汽车中取出的电池中有很大一部分将被用于第二次使用。在这种情况下,CPFL Energia与CPQD和比亚迪巴西公司合作,正在开发一个研发项目,旨在评估第二次应用中从电动汽车中移除的锂电池的剩余使用寿命。电动汽车电池可以在固定能源存储系统中重复使用,这是一项经济分析,允许二次电池的价格为90.1美元/千瓦时。因此,与此同时,进行了实验室测试,以表征细胞的特征,并正在开发算法,以便将其集成到这些系统中,目的是分析其健康状况并预测其在第二次使用中的剩余使用寿命,这就是编写本文的动机。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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