Design And Finite Element Analysis Of Crown Spring-socketof Electric Vehicle Connector

With the improvement of living standards,more and more people begin to buy cars,which has led to a series of problems such as energy consumption,resource shortages and environmental pollution,etc..Therefore,the new energy automotive industry emerged and keeps growing.The electric car connector plays the role of connecting the “nerves” and “blood vessels” of the car.The contact is the core part of the connector to realize the electrical connection.The spring socket,as the core element of the contact,has a crucial role.So how to choose the correct type of spring socket and it's design,is the key to achieve optimal contact resistance,engaging and disengaging forces,temperature rise and other electrical performance.The crownspring-socketare more widely used because their performance is close to the wire-type socket and the cost and manufacturability are good.Therefore,great importance must be attached to the design and related performance analysis of the crownspring-socket.This paper analyzes the structure and characteristics of the contacts of electric vehicle connector,and studies the research hotspots at home and abroad for the problem.In view of the existing problems in the design process of the crowns,the structure of a new crownspring-socket is proposed.ABAQUS is used to perform thermal analysis and testing validation and the differences between the finite element analysis data and the experimental data is analyzed.The design of the spring bar in the crown spring-socket is optimized by the combination of DOE and ABAQUS.Based on the finite element results,the crown spring structure is further improved.Finally,the design of the crown is tested and verified,which proves the soundness of the design.The main research results are:Combining DOE test design with ABAQUS CAE,the powerful function of DOE packet and analysis data is applied to ABAQUS CAE,which combines the advantages of two methods,and more scientific and fast to move to the correct design scheme without increasing the cost of experiment.The reliability of the design and the finite element analysis was verified for the optimized product.The finite element analysis software ABAQUS was used to analyze the temperature rise of different currents in the environment of 80?,and the temperature rise test of the crown spring-socketwas carried out.The experimental data were compared with the finite element analysis data,The reasonable boundary conditions and the corresponding parameters are given for the analysis of the temperature rise of the crown spring.