Abstract: Based on the realistic background that a large number of used power batteries were dismantled and resold privately by informal organizations, this paper designs a recycling mode of cooperation between informal organizations and responsible enterprises to recycle power batteries. By constructing a tripartite evolutionary game model among local governments, responsible enterprises and informal organizations, we analyze the stability of the respective strategies of the three parties in the game and the influence of each factor on the strategy selection. Secondly, the stability of pure strategy equilibrium point of tripartite game system is analyzed by Lyapunov indirect method, and the conditions for optimal strategy combination are obtained. Finally, Matlab2017 is used to make a simulation analysis, which verifies the effectiveness of the model analysis under different initial conditions. Combined with the conclusion, the realization of cooperative recycling mode and the timing of government exit are deduced in stages.

Key words: power battery recycling, informal organization, responsible enterprises, local governments