Study On The Optimization Of Prismatic Battery Production Line Of Company A

In recent years,due to the dual drive of industrial development and policy support such as new energy vehicles,China’s lithium battery market share has soared.Power lithium batteries have become a booming sunrise industry.However,the production capacity of lithium battery companies is the limiting factor for them to seize market share,so lithium battery companies attach great importance to the improvement of their own production capacity.The research object of this thesis,lithium battery manufacturer Company A,is also facing the dilemma that production capacity cannot keep up with demand.Therefore,this article conducts research on Company A’s main lithium battery product-prismatic battery.Explore the reasons for the low production capacity and find ways to improve it,in order to improve production efficiency,increase the profit income of Company A,and provide guidance to other similar production enterprises.At the same time,this can also fill the relevant gaps to a certain extent and provide theoretical help for related research.Firstly,this thesis introduces the theoretical basis and methods to be used,and sorts out the relevant literature at home and abroad on lithium batteries,production line optimization,simulation and lean production,and summarizes the research status.Secondly,this thesis analyzes in detail the current situation of the process flow and workshop layout of Company A’s square battery production line.The standard time of the current production line operation was calculated using the job measurement method,and the balance ratio was calculated to be 62.6%.Subsequently,combined with the actual situation,this thesis analyzes the problems and causes of the square battery production line from the three perspectives of production cycle,layout and management.Then,in view of the above problems,a variety of means are used to improve the production line problems: the IE method is used to improve the production line flow,bottleneck process and other unreasonable processes for the beat;On the basis of process improvement,the balance is further improved by re-dividing the workstation,so that the overall process distribution of production is more balanced;On the basis of the previous article,the improved workstation is used as the basic unit,and the layout of the back-end workshop is adjusted by SLP method.Finally,the article combines Flexsim simulation software to model the production line before and after the improvement separately,comparing the data from the two simulations.We also evaluate the improvement results from three aspects: idle rate of work units,balance rate,and production line output.After implementing the optimization program,the line balance ratio increased by17.4% and the number of workstations was reduced to 23.The total logistics distance was reduced by 33.8%,and the logistics intensity was reduced by about a quarter.The decrease of the idle rate of each unit and the increase of the yield in the same production time also prove the effectiveness of the optimization scheme in this thesis.