Fixing battery cells inside plastic enclosure

[Managuensis]

I am designing a plastic enclosure that will house a PCB and 6 battery cells soldered on it. The PCB is screwed on the top cover. The batteries are Ø32 mm and the enclosure will be used inside a vehicle. Therefore, in order to support the cells, I need to fix them inside the enclosure. I'd prefer to do that with plastic structures integrated to the bottom enclosure. What would be the simplest and easiest way of fixing them?

 

[BEMPE16524]

the cheapest way is cable tie. a lot of cable tie will secure it too.
if you want to make it look pro, do proper mounting bracket.

R.Efendy

 

[MintJulep]

The simplest and easiest way starts with quantifying the requirements.

Presupposing a preference and asking the internet for solutions without any information is the way to create warranty claims.

 

[TugboatEng]

You're going to need to identify some g-force requirements and possibly do some fatigue testing to evaluate the design. Also consider the aging profile of the plastic. It's probably best to just use potting compound if this is low production.

 

[hydtools]

Tear apart an Optima battery to see how they do it.

Ted

 

[3DDave]

Fixing heavy items to a circuit board is not a good idea. Mount the batteries separately and use jumper wires to the circuit board. Direct mounting will increase the chances of tearing the traces from the circuit board as well as the potential for fatigue both from the loads and from the difference in stiffness.

 

[TheTick]

If you constrain the batteries with plastic and it does not perfectly align with the solder joints, the joints will be stressed and will fail.