A Secure Private Charging Pile Sharing Scheme with Electric Vehicles in Energy Blockchain

Abstract

With the rapid advance of electric vehicles (EVs) and the sparse public charging infrastructure, the private charging pile sharing networks (PCPSNs) hold the potential to improve the quality of experience (QoE) of using EVs by leveraging private charging piles (PCPs) as shared charging points to charge a group of distributed EVs. However, due to the potential security and privacy issues for EVs and PCPs caused by untrusted participants in decentralized energy market, it becomes a crucial challenge to optimally schedule the charging and sharing strategies of EVs and PCPs in PCPSNs. In this paper, we propose a secure and permissioned blockchain-based PCP sharing scheme for EVs in PCPSNs. Firstly, we present an energy blockchain-based PCPSN framework to enhance the security of distributed energy trading. Secondly, we develop a reputation-based secure PCP sharing protocol to efficiently reach consensus in the blockchain with the implement of BLS multi-signature. Thirdly, we investigate a distributed reputation model to evaluate the trustworthiness of participants and identify malicious users. In addition, based on the many-to-one matching game, the optimal strategies of EVs and PCPs are analyzed by searching the stable matching pairs. Finally, simulation results show that the proposed scheme can not only improve the QoE of users, but also protect the network from adversaries.