With the rapid development of the electric vehicle industry, the connection of a large number of electric vehicles to the power grid has brought huge challenges to the stable operation of the power system, while also presenting new opportunities for energy transformation. The coordinated dispatching of electric vehicles and smart grids is an important way to solve this problem. This paper mainly discusses the role of collaborative dispatching in improving the operational efficiency of power grids and promoting the consumption of new energy. It analyzes the difficulties encountered in collaborative dispatching, such as the randomness of power consumption loads and the complexity of information interaction. It proposes collaborative dispatching strategies based on orderly charging, V2G technology, etc., and explores business models such as direct access and indirect access by load aggregators. Research has found that the innovative application of collaborative dispatching strategies and business models helps achieve good interaction between electric vehicles and smart grids, and contributes to the sustainable development of energy.