Thermal-electric Coupling Simulation Analysis of Automotive Central Electrical Junction Box

This research is about the rise of the temperature which happens in the process of work stated in fuse relay box technical qualification in QC/T 707.The finite element analysis software ABAQUS is used to set up the finite element model,analyze the temperature rise of PCB,relay socket,fuse socket,relay,fuse and contact resistance,and get the time-temperature curve.Compared with the data in laboratory,the reliability of the model and the parameters have been verified and can meet the design demands,that also certifies the reliability of its popularization and design optimization.