Wireless charging in PVC tube

[aaron.dwi]

Hi everyone,

I am building a project in which I am making an underwater drone to detect fish at the bottom of a lake. Now for the design I want to put everything from electronics to raspberry pi and batteries inside a PVC tube. I was wondering if it would be possible to wireless charge the batteries inside the tube. I already get some circuit idea for my own pcb, but my main concern is that the inductive effect will be blocked by the thickness of the PVC tube. The thickness of the tube is 2cm. Do you guys think it is possible to charge with this thick layer of PVC tube between the 2 coils or should I try another approach for the wireless charging?

Thanks in advance!

 

[Alec_t]

I would expect wireless charging to be possible, but rather inefficient. Couldn't you just have a couple of electrodes passing through seals in the tube wall? An internal diode would prevent battery discharge via the water.

 

[Bluejets]

Would that be 2mm rather than 2cm(20mm or 3/4")....?

 

[Harald Kapp]

Thickness or diameter?
@aaron.dwi : we need your answers to understand your problem.