PCB Module Isolation Cover
- Micah Black
Purpose - Safety
Provide an isolation barrier between the PCB that holds the voltage measurement taps, and the fingers that could touch the high voltage traces on it.
Where does it sit?
On top of each battery module
Access Holes
The wires that connect to this board need a spot to come out. This lines up with the hole underneath
Clearance
Checking the clearance between the cover and the screws holding the PCB in. We have around 0.5mm of clearance, so we should be good!
Locking
A snap-in mechanism was created using half-circle pins on this part and cutouts on the wire guide. One thing to think about hers is now it will be removed. If you pinch the sides to grab a hold of it, that will force the pins into the cutouts and you won’t be able to remove it. - when the connectors are removed, you should be able to grab underneath the lip and pull the cover off.
A similar locking mechanism was used by Maker’s Muse in this video: https://www.youtube.com/watch?v=7G5WpeJ1iG4
Here is a cross-section view of the components attached together to illustrate the locking feature. Since the plastic is pliable, the pins flex around the holes and let the cover come off.
Other Features
There is a large flat space on the top to allow us to put whatever we want - logo, battery details, etc.
Manufacturing
Final Revision:
The piece with ‘YOUR NAME HERE’ is a separate removable piece that will be attached later with a sponsor’s name from the Indiegogo campaign. We can also include other slogans and module numbers for tracking purposes.
The AFE and MODULE names designate which part the connectors go to. Note that the AFE designations should point towards the middle between each two rows of modules (towards the blue lines in this image):
Here is a picture of the manufactured module with the cover on top:
FAQ:
How do we get the dual-color prints?
Pause the print and swap the filament at the correct layer height. See here for more details: https://uwmidsun.atlassian.net/wiki/spaces/MFG/pages/1239416833