A notable challenge in Electric Vehicle (EV) charging is the time required to fully charge the battery, which can range from 15 minutes to 2-3 hours. This idle period, however, presents an opportunity to offer time-consuming or data-intensive services such as vehicular software updates. ISO 15118 referred to the concept of Value-Added Services (VAS) in the charging scenario, but it remained underexplored in the literature. Our paper addresses this gap by proposing \acronym, the first EV charger compute architecture that supports secure on-charger universal applications with upstream and downstream communication. The architecture covers the end-to-end hardware/software stack, including standard API for vehicles and IT infrastructure. We demonstrate the feasibility and advantages of \acronym by employing and evaluating three suggested value-added services: vehicular software updates, security information and event management (SIEM), and secure payments. The results demonstrate significant reductions in bandwidth utilization and latency, as well as high throughput, which supports this novel concept and suggests a promising business model for Electric Vehicle charging station operation.

翻译：电动汽车（EV）充电面临的一个显著挑战是电池充满所需的时间，这可能从15分钟到2-3小时不等。然而，这段空闲期也为提供耗时或数据密集型服务（如车辆软件更新）创造了机会。ISO 15118标准曾提及充电场景中的增值服务（VAS）概念，但在文献中仍未得到充分探索。本文通过提出\acronym（首个支持安全、具备上下行通信的充电桩通用应用的EV充电桩计算架构）来填补这一空白。该架构涵盖了端到端的硬件/软件栈，包括面向车辆和IT基础设施的标准API。我们通过部署和评估三种建议的增值服务——车辆软件更新、安全信息与事件管理（SIEM）以及安全支付，证明了\acronym的可行性和优势。结果表明，该架构显著降低了带宽利用率和延迟，并实现了高吞吐量，这支持了这一新颖概念，并为电动汽车充电站运营提出了一个前景广阔的商业模式。