Evaluation of polyamide copper hybrids for automotive battery systems

Niclas Emrich, Stefan P. Meyer, Rüdiger Daub, Reinhard Schiffers

Research output: Contribution to conferencePaperpeer-review

Abstract

Applications for automotive battery systems require hybrid joints of copper and polymer with high demands towards helium seal tightness and long-term durability. This work examines hybrid bonds, using indeterministic laser-nanostructures as pretreatment and variotherm injection molding as a joining method. Laser nanostructures are produced with two different laser setups; one having a mean power output of 20 W (state of the art) and one system with 200 W, promising faster processing rates by one order of magnitude. The spot distance and the number of laser pretreatment repetitions are varied systematically for both laser systems. All treatment variations are joined by variotherm injection molding using inductive heating of the metal specimen. A polyamide 12 compound with 10% glass fiber content is used. Bonds are tested for shear strength and helium seal tightness and the degradation of these properties due to accelerated ageing. For root cause analysis, the boundary layer is analyzed using ion beam cross-sectioning and SEM-imaging.

Original languageEnglish
StatePublished - 2021
Externally publishedYes
Event2021 SPE Annual Technical Conference, ANTEC 2021 - Virtual, Online
Duration: 10 May 202121 May 2021

Conference

Conference2021 SPE Annual Technical Conference, ANTEC 2021
CityVirtual, Online
Period10/05/2121/05/21

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