Current global trends show increasing numbers of electric vehicles on the road. The demand for fast charging is likely to keep pace with the adoption of electric vehicles. Fast charging places exceptionally high load demand on the electric utility infrastructure. These loads are beyond the capabilities of the existing infrastructure in many locations. The infrastructure power limitations can be offset by a high-power energy storage system (ESS). The crucial metrics for this system, in addition to meeting the peak load and energy demands of an EV battery, are cost and longevity. The main contribution of this article is to provide a methodology to assess the economic viability of an ESS solution for EVs supercharger buffering application. This methodology includes the model of aging effects on battery capacity, the overall efficiency, CAPEX, and OPEX of such system as well as the cost of the grid electricity purchased. This methodology is applied to two mature high-longevity lithium-ion battery technologies, namely, LFP and LTO. The results of this analysis suggest that there is no scenario where LFP is economically suitable. However, LTO shows the potential to be suitable in cases where there is a high demand from EV consumers for fast charging.

中文翻译：

---

电动汽车增压器缓冲应用高寿命电池容量衰减的经济性分析

当前的全球趋势表明，道路上的电动汽车数量不断增加。对快速充电的需求可能会跟上电动汽车的采用。快速充电对电力基础设施提出了极高的负载需求。这些负载超出了许多地方现有基础设施的能力。基础设施功率限制可以通过高功率储能系统 (ESS) 来抵消。除了满足 EV 电池的峰值负载和能源需求外，该系统的关键指标是成本和寿命。本文的主要贡献是提供一种方法来评估电动汽车增压器缓冲应用的 ESS 解决方案的经济可行性。该方法包括老化对电池容量、整体效率、资本支出、和该系统的 OPEX 以及购买的电网电力的成本。该方法论应用于两种成熟的长寿命锂离子电池技术，即LFP和LTO。该分析的结果表明，不存在 LFP 在经济上适合的情况。然而，LTO 显示出适用于电动汽车消费者对快速充电有很高需求的情况的潜力。