Model and Analysis of Low-carbon Innovation Investment Level of Complex Product Manufacturing Enterprises Based on Differential Game

In order to achieve the goal of dual-carbon, manufacturing companies promote green transformation actively by exploring low-carbon technologies and increasing innovational investments. According to the production characteristics of manufacturing enterprises, this paper selects a typical three-level supply chain system as the research object, and establishes a differential dynamic model of low-carbon technology innovation cooperation strategy. Then the low-carbon technology input level and income level of each member company under different cooperation strategies are deduced. Finally, MATLAB is used for simulation analysis. The results show that in non-cooperative situations, when system manufacturers adopt cost-sharing strategies, they play a positive incentive role for the entire supply chain system, which increasing a certain percentage of low-carbon technology innovation investment and even preceeds of equipment suppliers and component suppliers. The overall low-carbon innovation input level and benefits of the supply chain can be maximized when each member company in the supply chain system adopts cooperative strategy.