My project involves the robot navigating to its charging station, docking, charging, then resuming whatever it was doing. The robot is a hexapod with 18 leg motors, 2 camera motors, and will be operating on an NVidia Jetson Nano (which shouldn't use more than 5W according to the website).
Since there are so many motors, I'm planning on a 5-6S li-po or li-ion. I expect the system to use around 10-30W while operating. I want to keep it compact, but at the same time I don't want to have to manually plug the robot into a balance charger. The charging station design I have in my head consists of 2 metal contacts on either side, which connects to some charging circuit. The charging circuit needs to be able to charge the batteries without powering off the robot.
I've done quite a bit of research to the best of my ability into products that might solve this problem, but I'm afraid I either haven't found anything or haven't been able to understand anything...
I don't want to have to design / fabricate the circuit if I have to, since the bot catching on fire would be many $$$, but I am capable and willing.
Do such charging modules exist? How do engineers in the autonomous robotics industry solve this issue?