Abstract:The refined echelon utilization of electric vehicle power battery has become a difficult problem to be solved. This paper designs a power battery echelon utilization scheme based on blockchain technology, and establishes a battery life cycle information storage chain with consensus mechanism. Echelon utilization scenarios include service scenarios of electric vehicles, energy storage scenarios of Energy Internet, and wasted battery refining scenarios. The scheme realizes decentralization, improves data security and economy, significantly reduces the transaction cost and detection cost between the steps, and increases the residual value of the batteries. The simulation results show that the scheme can significantly improve the utilization rate of power batteries. Based on the estimation of 100 million electric vehicles in China in 2030, the economic benefit will be 387.9 billion. Compared with the 231.3 billion and 135.1 billion of the other two echelon utilization schemes, the value added is about 147.7% and 53.4%.