Battery knowledge · Testing methods
Tab pull-strength test
Pulling a welded tab or busbar joint until it breaks, recording the peak force and where the break occurred, to verify weld quality. It is destructive, so samples are taken from each batch or shift; failure through the parent foil rather than at the weld interface indicates a sound joint.
- Also called
- weld pull test, pull test, weld peel test
Example
Testing methods: an example situation
Resistance immediately after a current step can differ from a ten-second value because slower polarization contributes.
Read Tab pull-strength test alongside Busbar in this context. A rigid copper or aluminium conductor that joins cell terminals into series and parallel groups, and modules into the pack. Its cross-section is sized for current and heating, and its joints — welded or bolted — are a classic source of resistance and failure.
Use in Lemonergy
Record specimen, state, instrument, temperature and timing.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Battery Test Manual For Electric Vehicles, Revision 3
Jon P. Christopherson · Idaho National Laboratory · 2015
Topic background · Performance characterization, pulse resistance/power, life testing and reference performance tests; historical 2015 edition.