Reverse logistics network design and optimization for battery recycling of waste electric vehicle based on circular economy

With the development of energy and environmental benefits and technology, the application of electric vehicles is becoming more and more popular, and it is accompanied by the environmental impact and recycling application of used electric vehicle batteries (WEVB). In order to cope with the "decommissioning tide" of new energy vehicle batteries, the establishment of a sustainable and efficient waste power battery recycling network is a key link. The income and government subsidies of decommissioned battery recycling system are the premise of the sustainable development of the overall link. Further application and optimization involve economic feasibility, environmental impact and battery characteristics. In view of this, the site-path optimization model of decommissioned power battery recycling reverse logistics is established with the maximum total profit as the goal, combining the characteristics of power products and the characteristics of battery supply and demand side changes. The optimal location and route direction are obtained, and sensitivity analysis is carried out to determine the influence of factors such as technological development and market changes. The results show that the increase of regional recycling leads to the increase of total profit, the increase of transportation weight, and the increase of unsaturated facilities, and the decrease of profit growth. Increased market demand leads to reduced transportation, environmental costs and network routing optimization; Battery technology changes bring revenue far higher than the cost, improve the echelon utilization and reduce the enterprise capital recovery cycle and benefit the development of recycling links.