Research On Power Battery Closed Loop Supply Chain Decision Making And Coordination Considering Equity Cooperation

As electric vehicles are widely popularized and used,the demand for power batteries is gradually increasing and the consumption of raw materials is rising.At present,China has entered the stage of large-scale retirement of power batteries.Faced with the reality of soaring raw material prices and insufficient supply,power battery manufacturers have decided to lay out the recycling of power batteries.However,the current retired power battery recycling industry is still in the development stage,and there are still problems such as high recycling cost and low recycling rate.Based on the above background,this paper constructed a closed-loop supply chain model consisting of power battery manufacturers and recyclers under government subsidies,and explored the impact of equity cooperation strategy on the closed-loop supply chain.This study established a centralized and decentralized decision making model without equity cooperation,a decentralized decision making model for manufacturers’ one-way shareholding recyclers and a decentralized decision making model for cross shareholding.By comparing the optimal decisions and profits of power battery manufactures and recyclers before and after the equity cooperation,the following conclusions were drawn:(1)Compared to the without equity cooperation strategy,both manufacturer’s one-way shareholding recycler cooperation strategy and cross-shareholding cooperation strategy can increase the recycling rate of retired power batteries,reduce the market price of power batteries and increase the market demand for power batteries.Under certain conditions,both the two equity cooperation strategies can increase the profits of power batteries manufacturers,recyclers and the closed-loop supply chain.(2)Neither the manufacturer’s one-way shareholding recycler cooperation strategy nor the cross-shareholding cooperation strategy can achieve full coordination,so two part tariff contract are introduced on the basis of equity cooperation respectively to achieve coordination.(3)The applicable conditions of the two equity cooperation strategies are related to the specific shareholding ratio,so manufacturers and recyclers should choose the appropriate equity cooperation strategy according to their own strategic layout and actual situation.(4)The increase in government subsidies will benefit the profits of power battery manufacturers and recyclers,while the increase in the recycling price of retired power batteries will reduce the profits of manufacturers and recyclers.