New England Hybrid Festival 2013
Mikes You Tube Videos
Mikes Saturday Hybrid-Solar- Electric Workshop
Insight 20 AH lithium battery system
assembling the pack core
BMS board mounting position?
Capturing the mounting boss positions
Cell tester is modified and lithium test fixture takes shape.
Charging experiments
Cleaning the cell tabs
fixing and deburring the heat spreaders
Final assembled pack core
Finishing the connection blocks
finishing the fins and end plates
First discharge graph
Getting started on the final design and build
Heat sink fins
heatsink vs no heatsink comparison
Higher thermal sensitivity look at the cell heating still shows no dents
Hot and cold cells compared.
How do the big guys do it
Is using this asking for a problem?
main I/O terminals and Heat shrink
Making the 50 insulating strips
Painted cells to increase emissivity
Punching the holes in the tabs
Same discharge with huge heat sink on one side of cell
Testing the fans and layout of the BMS boards
The Battery case starts to take shape
The case is nearly finished
the connector plate is made and mounted
The tab punch
The world in IR Cool
Grid charger Users page
Mikes Surplus Loft
Renewable energy exhibits
New England Hybrid festival 2014

The world in IR Cool

The world in IR Cool
Some new eyes take a look at the thermal world

My new instrument arrived today, and the 4 hours I had to wait for th battery to charge before turning it on were like hell.
Finally the first look, and 2 hours later I finally pointed it at the A123 cell. The biggest factor in accuracy with IR imagers is the emissivity of the surface. Aluminum, Copper shiny steel and most metals are more reflective than emitting, but only a thin layer of rust, anodizing or paint is required to make the surface emit the correct black body radiation.
So I will paint the cells until the reflection is minimized, and run some more thermal test to see if the dents in the cells are a different temperature than the areas not stretched.