基于区块链的电动汽车充电网络信任管理机制

Blockchain-Based Trust Management Mechanism for Electric Vehicle Charging Networks

充电网络建设的滞后已经成为制约电动汽车发展的关键因素,而C2C的商业模式则有望成为其强大的推动力,但由此也产生了为交易双方建立信任机制的问题。针对该问题,提出一种对充电网络的交易主体进行信任评估的方法,并设计了基于双层区块链的信任数据存储系统;同时,还提出了基于“轮盘赌”策略的共识算法,以改善工作量证明(proof of work, PoW)机制在算力损耗和共识效率上的缺陷。实验结果表明,提出的方法能够较好地识别恶意主体,并可以取得较高的共识效率。

The lag in the construction of charging networks has become a key factor restricting the development of electric vehicles, and the C2C business model is expected to become a strong driving force for its development. But from this, the problem of establishing a trust mechanism for both parties to the transaction has also arisen. In response to this problem, this paper proposes a trust evaluation method of transaction subjects of the charging network, and designs a trust data storage system based on a double-layer blockchain. At the same time, a consensus algorithm based on the “roulette” strategy is also proposed to improve the defects of PoW mechanism in computing power loss and consensus efficiency. The experimental results show that the method proposed in this paper can better identify malicious subjects and achieve a higher consensus efficiency.