Model Module Enclosure

Objective:

For this project, I’m trying to physically test the heat generation of a module of cells in an environment and current draw that mimics the whole battery. To do this I plan on creating a smaller enclosure made of another material such as PLA to enclose a module.

Alternative: Use a lower thermal conductive material or do extra battery layups to use extra panels from mock enclosure

Things Needed:

• Thermal resistance of a battery box panel

• Thickness of model walls that would match the thermal resistance of a battery box panel

• A 0.1ohm resistor rated for extremely high power so that we can draw 40A from a 4V module

• Tested Module

• Mock Assembly

Parts:

• 2 PCS Aluminum Power Metal Shell Case Wirewound Resistor 200W 0.1~10K 0.22 0.33 0.5 2 4 8 20 30 47 50 100 200 300 500 1K 2K (Size : 200W 0.1 Ohm)

Calculations:

1. Find thermal resistivity of kevlar 29, foam, 105 resin/209 hardener epoxy, and woven carbon fiber

2. Find thermal resistivity of kevlar/epoxy composite and carbon fiber/epoxy composite using the weight ratios used during layup

3. Measure each section (kevlar, foam, carbon fiber) thickness

4. Use the resistivities and thicknesses to find thermal resistances of each section, add them all to find thermal resistance of whole panel.

5. With the desired thermal resistance and resistivity of PLA, we can find the thickness needed from each mock enclosure wall.

Open

Step 1

Open

Step 2