Blockchain-based power battery traceability system for new energy vehicles

In response to the problems of the traditional new energy vehicle power battery traceability system such as centralized easy tampering, data cannot be shared and lack of effective management, this paper proposes a blockchain-based new energy vehicle power battery supply chain traceability system. Analyzed the business processes in the power battery supply chain of production, vehicle, sales, power exchange and recycling, designed the system architecture according to the different needs of regulators, consumers, enterprises and other subjects, established the traceability information chain and database, and proposed a smart contract applicable to the system. The system relies on the characteristics of blockchain decentralization and on-chain data that cannot be tampered with, which protects the privacy of users and improves the reliability of the system while meeting the traceability needs of power batteries.