Research on the competition and synergy of China's new energy vehicle two level multi subject supply chain

This paper studies the competitive decision-making and collaborative decision-making of the two-level multi-agent supply chain of China's new energy vehicle industry. Based on the differential game theory, this paper constructs the profit model of each subject in the supply chain of the new energy vehicle industry in the case of competitive decision and collaborative decision, and obtains the optimal factor value and profit value of each subject, which is verified by an actual example. The results show that: (1) the optimal sales volume of new energy vehicle manufacturers decreases with the increase of non raw material costs of new energy vehicle manufacturers and the costs of new energy vehicle core parts suppliers, whether in the case of competitive decision-making or collaborative decision-making. (2) The optimal profit of each subject in the supply chain system of the new energy vehicle industry and the overall profit of the supply chain system in the case of collaborative decision-making are significantly better than those in the case of competitive decision-making. (3) Whether it is a new energy vehicle manufacturer, a new energy vehicle core parts supplier or the whole new energy vehicle supply chain, the growth rate of the main profit under the collaborative decision is significantly faster than the optimal profit under the competitive decision.