Loading

Parameterized Battery Compartment

by guru, published

Parameterized Battery Compartment by guru Dec 6, 2010

Description

I need battery-compartments in various sizes for my projects, so i made a
openscad file that generates them for me. Just enter the battery type (AA, AAA, C or D)
and the number of batteries you need. Export the stl file and add it to your project or print it as a standalone box. The only thing thats needed (besides batteries) are litte metall stripes for the contacts.

local-guru.net/blog/2010/12/06/generative-battery-compartment

Recent Comments

view all
Sorry!!! The new version is thingiverse.com/thing:5079
Hi Guru!

The new version is here: thingiverse.com/thing:5070 It is a parameterized battery pack with the electrical connections. Enjoy! ;-)
Nice work!

I was thinking that you could still shave off a few millimeter by thinning out the bottom layer until the side wall of the batteries poke through. So instead of having a solid slab, the bottom would consist of triangular ribs that fit in between the batteries. I've seen some commercial battery com
partments that use the same trick. Here's one example I found with a quick google search: google.com/products/catalog?hl=en
&
amp;q=battery+compartments
&
amp;show=dd
&
amp;cid=12698166149287297741
&
amp;ei=5eP_TMvkKJjuNLnRxaAI
&
amp;sa=title
&
amp;ved=0CD0Q8wIwBTgK#p

You could also build some springiness into the design at the flat end of each battery, by making a single layer of the side wall bulge in towards the battery. I think that should provide enough "give" to clamp the batteries in place securely, without having to use the traditional spiral spring at
the flat end (or without having to build a spiral spring into the plastic itself).

Makes

Liked By

view all

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag. Print Thing Tag
Hi Guru!

The new version is here: thingiverse.com/thing:5070 It is a parameterized battery pack with the electrical connections. Enjoy! ;-)
Sorry!!! The new version is thingiverse.com/thing:5079
Nice work!

I was thinking that you could still shave off a few millimeter by thinning out the bottom layer until the side wall of the batteries poke through. So instead of having a solid slab, the bottom would consist of triangular ribs that fit in between the batteries. I've seen some commercial battery com
partments that use the same trick. Here's one example I found with a quick google search: google.com/products/catalog?hl=en
&
amp;q=battery+compartments
&
amp;show=dd
&
amp;cid=12698166149287297741
&
amp;ei=5eP_TMvkKJjuNLnRxaAI
&
amp;sa=title
&
amp;ved=0CD0Q8wIwBTgK#p

You could also build some springiness into the design at the flat end of each battery, by making a single layer of the side wall bulge in towards the battery. I think that should provide enough "give" to clamp the batteries in place securely, without having to use the traditional spiral spring at
the flat end (or without having to build a spiral spring into the plastic itself).
Amazing!!! It is so useful for my printable mobile robots I am working on (thing 4954). I have had a simple idea for the electrical connections. I will develop the concept and test if it works or not.

Thanks a lot for this contribution!!! ;-)
I got it! It works! I have tested it only with one AAA battery. I have implemented the solution with a non-parameterized-custom-Battery compartment derived from your design. I will upload it to thingiverse to show you the idea and then I will do it parameterized again (when I have some time)
Done! The new object is thing 5070
I am making a laser cut AA battery holder as part of a tvbgone enclosure. I see two problems - 1. ensuring electrical contact - the material will need to be good, and 2:ensuring electrical contact - catering for varible length batteries and bounce etc.

A good springy beryllium(sp?) copper strip would be best.

OR how about using PCB test probes - they have a gold plate and a spring...

uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct
&
amp;R=5424990
I tried to do something like this, but couldn't figure out how to get or make the "little metal strips". How did you solve this?
guru - in reply to mrule
I plan to cut appart a aluminium can, but i had no time to try it yet. I'll post my experiences. If it doesn't work as planed i will use copper.
Top