I need to find someone with a laser welder to weld up 3 small and
simple battery cases quickly. These are protoypes so I need a quick
turn around time. Are any of you interested or can you recommend a
good laser welding shop? I can send you the drawings in case you are
interested. The detailed rfq is below:


Request for Quote
rev 021208 720p

Subject: Laser weld battery case to provide hermetic seal

Contact:
Doug Danielson
Atlanta, Georgia 30312
404 667 4680 mobile


Summary:
We need to obtain price and lead time quotations for laser welding a
seam in a small stainless steel battery case to produce a hermetic
seal. These are prototype assemblies so small order quantities (~3
assemblies) and quick turnaround time are expected.

Requirements:
Battery components must be immersed in an argon atmosphere during
welding
Battery cells contain a thin film of lithium metal that will corrode
if exposed to moisture
Temperature of internal battery cells cannot exceed 150C
Battery cells contain a thin film of lithium metal that will melt if
heated above 150C
Leak test battery after welding to confirm hermetic seal

Details:
Please quote lot sizes of 3 assemblies. Battery will be assembled in
our facility with the base and can held in place with Kapton tape. The
entire assembly placed in a heat sealed pouch filled with argon gas
and will be shipped to the supplier for welding. The pouch must be
placed in an argon atmosphere before removing the components from the
pouch for welding to prevent moisture from entering the battery case.