Electric vehicles are gaining widespread adoption and are a key component in the establishment of the smart grid. Beside the increasing number of electric vehicles, a dense and widespread charging infrastructure will be required. This offers the opportunity for a broad range of different energy providers and charging station operators, both of which can offer energy at different prices depending on demand and supply. While customers benefit from a liberalized market and a wide selection of tariff options, such dynamic pricing use cases are subject to privacy issues and allow to detect the customer’s position and to track vehicles for, e.g., targeted advertisements. In this paper we present a reliable, automated and privacy-preserving selection of charging stations based on pricing and the distance to the electric vehicle. The protocol builds on a blockchain where electric vehicles signal their demand and charging stations send bids similar to an auction. The electric vehicle owner then decides on a particular charging station based on the supply-side offers it receives. This paper shows that the use of blockchains increases the reliability and the transparency of this approach while preserving the privacy of the electric vehicle owners.

中文翻译：

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基于隐私保护的基于区块链的电动汽车充电，并具有动态电价决策

电动汽车正在得到广泛采用，并且是建立智能电网的关键组成部分。除了越来越多的电动汽车，还需要密集且广泛的充电基础设施。这为众多不同的能源供应商和充电站运营商提供了机会，这两家公司均可根据需求和供应以不同的价格提供能源。尽管客户受益于开放的市场和广泛的关税选择，但这种动态定价用例会受到隐私问题的影响，并允许检测客户的位置并跟踪车辆，例如针对性广告。在本文中，我们根据价格和与电动汽车的距离，提供了可靠，自动且具有隐私保护功能的充电站选择。该协议建立在一个区块链上，在该区块链中，电动汽车向其发出信号，充电站发出类似于拍卖的出价。然后，电动车拥有者根据其收到的供应方报价来决定特定的充电站。本文表明，使用区块链可以提高这种方法的可靠性和透明度，同时保留电动汽车所有者的隐私。