Laserbonding instead of ultrasonic wire bonding — An alternative joining technology for power applications

Sedlmair, Josef; Mehlmann, Benjamin; Olowinsky, Alexander

doi:10.23919/icep.2017.7939332

Cited by 3 publications

(1 citation statement)

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“…Ultrasonic welding requires high core pack rigidity due to forces involved and generates large amount of heat [5][6][7] that can lead to cell damage. Wire bonding is very susceptible to changes in battery pack geometry and state of the battery case surface [8,9]. Resistance welding does not require relatively high initial investment [10,11] and allows for use of manual labor or high level of automation depending on production needs.…”

Section: Introductionmentioning

confidence: 99%

Selected properties of single-sided resistance spot welded joints on 18650 battery tab

Bieliszczuk,

Zyskowska

2024

Weld. Tech. Rev.

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The aim of this study was to characterize selected properties of joints made by single-sided serial resistance spot welding of 0.15 mm thickness Hilumin connectors to the negative terminal of LGDBHG21865 lithium-ion cylindrical battery cell. Welding process was performed using production parameters to properly represent actual manufacturing conditions. Mechanical properties of the joints were examined by means of tensile stress test and microhardness measurements while additional studies include metallographic analysis of the joint cross sections by means of optical and scanning microscopy. Energy dispersive spectroscopy was performed in order to determine surface distribution of elements within the weld nugget. Studies confirmed suitable microstructure of welded joints, repeatability of the welding process and proper selection of the welding parameters.

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