1
\$\begingroup\$

I'm trying to build a 6S2P balanced Li-Ion battery pack for a quadcopter using LG 18650 HG2 cells with pre-soldered nickel strips (1st image) so that I won't solder directly on the cell's terminals. enter image description here
so I have some questions:
1 ) I'll put the cells inside the 2 disassembleable arms so how do you advice to keep them in position (2nd image) and isolate e.g. the gray circled terminals (3rd image)?
enter image description here
2 ) is this diagram correct or are there better solutions?
enter image description here
3 ) I'll draw a maximum of 30A continuously, are 16AWG wires enough?

\$\endgroup\$
  • \$\begingroup\$ what do you mean with skipping cell node connections? I connect each of the 6 2P cells couples to the JST. the moment of inertia shouldn't change too much, the battery would be more protected and I'd save space and weight of its support. \$\endgroup\$ – Miky Apr 10 '19 at 22:10
  • \$\begingroup\$ I don't think that's going to work. Mainly because the batteries are not able to be cooled in that configuration. The moment of inertia would change a lot since you have a lot of extra mass at the edge of the arms whereas normally it is all bunched up in the center. \$\endgroup\$ – DKNguyen Apr 10 '19 at 22:10
  • \$\begingroup\$ I realized that you were skipping balance nodes because those cells were supposed to be in parallel and deleted my last post. \$\endgroup\$ – DKNguyen Apr 10 '19 at 22:11
  • \$\begingroup\$ temperature shouldn't be a problem because 30A is the draw at 100% throttle , but hovering I'll draw 5A \$\endgroup\$ – Miky Apr 10 '19 at 22:14
  • \$\begingroup\$ in this video it seems to work well youtube.com/watch?v=I4IMu__vvhk \$\endgroup\$ – Miky Apr 10 '19 at 22:23

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.