Parameter study on the electrical contact resistance of axially canted coil springs for high-current systems

Schriefer T, Hofmann M, Rauh H, Eckardt B, März M (2019)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2019

Event location: Albuquerque, NM US

DOI: 10.1109/HOLM.2018.8611640

Abstract

This parameter study investigates the influence of several design parameters (wire diameter, canted angle, coil height, spring diameter, number of turns) and amperage on the contact force and electrical resistance of axially canted coil springs. The correlations are quantified by a full factorial experiment that is based on a numerical finite element model. The static load deflection curve of the spring is experimentally verified by a compression load cell, which links contact forces to their corresponding spring deflections. Varying amperage and deflection are applied through a test setup with Four-terminal sensing to measure the total contact resistance. An analytical model is developed to separate the bulk and constriction resistances of spring and mating partner from the total contact resistance. The results allow the identification of an optimal spring configuration particularly for high-current contacts.

Authors with CRIS profile

Thomas Schriefer Lehrstuhl für Elektronische Bauelemente Hubert Rauh Lehrstuhl für Elektronische Bauelemente Martin März Lehrstuhl für Leistungselektronik

Involved external institutions

Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie (IISB) DE Germany (DE)

How to cite

APA:

Schriefer, T., Hofmann, M., Rauh, H., Eckardt, B., & März, M. (2019). Parameter study on the electrical contact resistance of axially canted coil springs for high-current systems. In IEEE (Eds.), Proceedings of the 2018 29th International Conference on Electrical Contacts together with 64th IEEE Holm Conference on Electrical Contacts. Albuquerque, NM, US.

MLA:

Schriefer, Thomas, et al. "Parameter study on the electrical contact resistance of axially canted coil springs for high-current systems." Proceedings of the 2018 29th International Conference on Electrical Contacts together with 64th IEEE Holm Conference on Electrical Contacts, Albuquerque, NM Ed. IEEE, 2019.

BibTeX: Download