新能源汽车动力电池回收利用过程减碳成效测算OACSTPCD

To quantitatively evaluate the environmental benefits of the recycling process for new energy vehicle power batteries,and to provide support for the improvement of the management system and relevant standards for end-of-life power batteries,thereby assisting in the implementation of the national"two-carbon"goal,the paper selects ternary lithium batteries as the research subject.The paper identifies typical scenarios for power battery recycling and utilization,divides the lifecycle of ternary lithium batteries into four stages:raw materials acquisition,manufacturing and assembly,usage,and scrap recovery and establishes the corresponding GaBi model.Based on different recycling methods,such as wet recycling A,wet recycling B,and fire-wet combined recovery,a life cycle evaluation model for ternary lithium batteries was built and the carbon reduction efficiency of the recycling and reuse process was calculated.The research results show that the recycling of ternary lithium batteries significantly reduces carbon reductions.Specifically,the carbon dioxide emission reductions for each recycling method are as follows:60.71 kg CO2/kWh for wet recycling A,150.00 kg CO2/kWh for wet recycling B,and 153.57 kg CO2/kWh for fire-wet combined recycling.The carbon dioxide emission reduction efficiency of the three different recovery processes is ranked from best to worst as follows:fire-wet combined recovery,wet recovery B and wet recovery A.Proper recycling of power batteries can significantly reduce carbon emissions during the recycling process,thus producing greater environmental benefits.