I need a reliable and maintainable spot welder to solder the 18650 batteries of my Powerbucket. This is my version of this basic tool.
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You will need 2 electronic boards to build the Spot Welder:
1 - an XSBO processor board - described here #a Break Out Board for an eXtremely Small Proc.
2- a TRIT board - all the files are provided in this project.
NOTE: I can provide the XSBO board populated, tested and programmed with the spot Welder application.
I made the first "serious" welding test on 3 18650 cells tonight.
The blue part is a piece of heavy gauge copper bar in a thermo sleeve. It serves as a weight to control the welding pressure. Each arm can move independently (to some extent...).
Close up on the welding electrodes
The electrodes are made of machined copper bar. The electrodes are perfectly perpendicular to the surface to be welded. The gap between the electrode is 1.6 mm.
Hallo Marco,
Danke sehr für Ihr Interesse an diesem Projekt.
I have put all the necessary files into the "file bag" of the project.
If you need more details, please ask.
Regards,
Michel
Hello Loïc,
Thank you. The Spot welder works very fine. It's an "easy to build", cheap and valuable tool.
The first string of 1000 cells has been put into service by November 2016. Check the project out here #A 110 kWh Powerbucket.
I will build the second string as soon as I find the cash for the cells...
See You
Michel
Nice !
So how are things going on this welding part ?
Are your new batteries on their way?
Michel Kuenemann
Rob Ludwick
mcu_nerd
Jared Young
TwinkleTwinkie
Hi Michel,
very nice and clean job!
Could you provide some Infos to the pcb?
I'm very interested in rebuilding this project!