Research On Model Selection And Structure Optimization Of Automobile Waste Power Lithium Battery Crusher

In recent years,with the country’s strong support for the new energy vehicle industry,the sales of new energy vehicles in China began to increase year by year,however,behind the increase in sales,will inevitably bring the problem of recycling of used power lithium batteries.At present,the domestic research on the extraction of valuable metals and chemical depth treatment of used lithium batteries has been quite perfect and mature,but there is not much research on the crushing and recycling stage of used lithium batteries.The special structural composition of lithium battery makes it easy to cause various problems in the crushing process,which will affect the crushing efficiency of the crushing equipment.In order to improve the recycling capacity of the crushing equipment for waste lithium battery,this paper focuses on the selection and optimization of the primary crusher on the basis of the three-stage crushing and recycling process of waste lithium battery from the production reality.The main research of this paper is as follows:(1)A theoretical analysis of the mechanical characteristics of used power lithium batteries was conducted,and shear crushing and bending crushing were identified as effective ways to crush lithium batteries;through the analysis of the working principles and working fields of various types of crushers commonly found in the current market,a twin-shaft shear crusher was selected as the prototype model of used power lithium battery crusher.(2)In accordance with the design requirements of the crusher,the parameters of the main components of the waste power lithium battery crusher,the models of the motor and reducer and the materials of the cutter and spacer were selected,and an anti-ignition device was added to the waste power lithium battery crusher.(3)A cylindrical lithium battery particle adhesion model of model 26650 was created by the discrete element software EDEM,and its adhesion parameters were selected by single-axis compression simulation tests.By designing single-factor simulation test,the influence law of cutter arrangement rotation angle,cutter tooth inclination angle and cutter roll speed on crushing efficiency of crusher was investigated,and further by orthogonal simulation test,the influence order of three factors on crushing rate of crusher was determined,and the best combination of parameters was obtained.(4)The product particle size of the waste power lithium battery crusher was analyzed by the two-way coupling method of EDEM-ADAMS,and the comparative analysis of the force condition of the crusher cutter and the crushing rate of the particle adhesion construction before and after the optimization was carried out by the design simulation comparison test to verify the rationality of the optimization results.(5)The stress-strain situation of the cutter disc during the simulation was analyzed by the one-way coupling method of EDEM-ANSYS Workbench,and the locations of the maximum equivalent force and maximum displacement on the cutter disc were obtained,and whether the cutter disc would fail was analyzed;the modal analysis of the cutter roll was carried out,and the inherent frequency of the first six orders of the cutter roll was obtained,and whether it would resonate by comparing with the working frequency of the cutter roll.