Study on abrasive waterjet cutting of vehicle power lithium batteries
To address the issues of high risk,long processing time,and environmental pollution associated with traditional battery decomposition methods,it was proposed to apply abrasive waterjet cutting to disassembly of vehicle power lithium batteries.Experimental research for feasibility was conducted on cutting lithium iron phosphate batteries with abrasive waterjet to explore the cutting speed at different battery locations,and the voltage change of the battery before and after abrasive waterjet cutting;Material loss and pollutants generated during cutting were analyzed.The experiments show that the abrasive waterjet can safely and efficiently cut through the battery casing,connectors,cells,positive and negative electrode materials,and separators under pressure;The cutting speed varies between 4 and 16 mm/min depending on the position of the battery;When the lithium iron phosphate battery cells are cut,electrolyte flows out,which can react with water to produce a small amount of corrosive liquid;After waterjet cutting,the voltage of single cells decreases,but it does not affect the cascade utilization of cells and the recovery of rare metals.This study demonstrates the feasibility of abrasive waterjet cutting for lithium batteries,provides alternative solutions for potential battery disassembly methods,and offers theoretical guidance for promoting and improving the recycling and circular utilization system of power batteries.
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