Abstract: In view of the new opportunity brought by block chain ecosystem to the energy field, this paper researches the transaction scheme of electric vehicle （EV） charging. On the basis of analysis on block chain technical connotation and the characteristics of transaction, a management system of electric vehicle charging transaction based on raiden network is put forward. Through the use of smart contracts with intermediary transfer mechanism, the management channel of under-chain transaction based on raiden network is established, and gives the charging transactions between users and electric vehicles. This architecture can help reduce the transaction chain pressure, promote the transaction frequency, increase line speed, reduce management cost and operation risk in the block chain transaction network etc. Combined with the using scenario of charging piles, the process of transaction under the raiden network and the implementation process under the smart contract are explained. Finally, the expansibility and application of block chain in energy transaction management are prospected.

Key words: block chain, electric vehicle（EV）, charging, raiden network, smart contract