TY - GEN
T1 - Friction coefficients of battery metals and the usage in ultrasonic welding simulations
AU - Cai, Wayne
AU - Blau, Peter J.
AU - Qu, Jun
N1 - Publisher Copyright:
© 2013 IEEE.
PY - 2014/10/1
Y1 - 2014/10/1
N2 - Ultrasonic welding is one of the mainstream joining technologies for an automotive battery pack where battery cells are welded mostly in series with bus-bars on interconnect circuit boards in battery electric vehicles (BEV). Mathematical simulations, such as Finite Element Analysis, have been used to simulate the ultrasonic welding for process and joint quality optimizations. Since friction-generated heat plays a critical role in ultrasonic welding, accurate friction coefficient measurement is essential to the fidelity of such simulations. This paper describes the experimental results of friction coefficients for such materials, as well as the effects of surface conditions, sliding frequencies, and normal loads on the friction coefficient. It was found that the average friction coefficient between a Cu bus-bar and a Cu tab is 1.2, while between a Cu bus-bar and an Al tab is 0.6. The finite element analysis of the battery tab welding process using the measured friction data is depicted.
AB - Ultrasonic welding is one of the mainstream joining technologies for an automotive battery pack where battery cells are welded mostly in series with bus-bars on interconnect circuit boards in battery electric vehicles (BEV). Mathematical simulations, such as Finite Element Analysis, have been used to simulate the ultrasonic welding for process and joint quality optimizations. Since friction-generated heat plays a critical role in ultrasonic welding, accurate friction coefficient measurement is essential to the fidelity of such simulations. This paper describes the experimental results of friction coefficients for such materials, as well as the effects of surface conditions, sliding frequencies, and normal loads on the friction coefficient. It was found that the average friction coefficient between a Cu bus-bar and a Cu tab is 1.2, while between a Cu bus-bar and an Al tab is 0.6. The finite element analysis of the battery tab welding process using the measured friction data is depicted.
KW - Aluminium
KW - Battery Metal
KW - Copper
KW - Friction
UR - http://www.scopus.com/inward/record.url?scp=84911434955&partnerID=8YFLogxK
U2 - 10.1109/EVS.2013.6914778
DO - 10.1109/EVS.2013.6914778
M3 - Conference contribution
AN - SCOPUS:84911434955
T3 - 2013 World Electric Vehicle Symposium and Exhibition, EVS 2014
BT - 2013 World Electric Vehicle Symposium and Exhibition, EVS 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th World Electric Vehicle Symposium and Exhibition, EVS 2014
Y2 - 17 November 2013 through 20 November 2013
ER -
