Efficient Smart Contract Mechanism for New Energy Vehicle Supply Chain Based on Alliance Chain

<div>Supply chain management is key to industry efficiency, while information security and transparency are at the core of operations management. Blockchain technology shows great potential in this regard and can effectively make up for existing shortcomings. This article deeply explores the application of blockchain in new energy vehicle supply chain management, focusing on enhancing the systematization and collaboration of the supply chain through smart contract mechanisms. We established a collaborative contract model for the three-level supply chain. Especially from the perspective of the intermediate supply chain, we designed a smart contract mechanism to optimize key links such as order processing, payment, and logistics tracking, and used the alliance chain to ensure the safe sharing and sharing of information. At the same time, we have also developed an interactive system for each link of the supply chain and achieved smooth interaction in the new energy vehicle supply chain by adjusting the parameters and functions of smart contracts. Using the Ethereum scripting language, we built a blockchain smart contract mechanism based on supply chain contracts. This research not only demonstrates the potential value of blockchain technology in promoting supply chain information sharing and enhancing mutual trust, but also highlights its importance in supply chain management innovation and practical application.</div>