3S 11.1V LiPo Drone Charging Station: PCB Protection & AC to DC Converter Choices

Hello All,
I am doing a charging station for a drone that has a 3S (11.1V) LIPO battery.

basically, the charging station will be conductive. Copper plate on the ground with copper contacts on each leg of the drone.  and that is my diagram for the station
AC WALL INPUT >>> AC TO DC converion>>>> PCB battery Charger (to protect overcharge or discharge) >>>> Copper station to copper drone contacts
I have two questions
first about the PCB ( protection circuit board)
I found something like this. Do you think that should work?
https://www.amazon.com/dp/B07PMGZCLN/
And my other question is about the AC to DC conversion. what do you recommend to do this part? is as simple as buying an AC to DC converter ?

Thank you

Hi
Without wishing to sound overly critical this seems to be going to a lot of bother to reinvent the wheel regarding connecting to the drone. What is wrong with a proper, insulated connector? It will weigh less and be far safer than what you are proposing.Your drone will need four contacts with your proposed charging pad (power and monitoring assuming three cells). I assume you will have four conductive studs or the like, one at each corner to mate with your pad so you will have to consider what will happen if you land on wet grass or the like. I trust protection against short circuit will be incorporated into the drone design?  The exposed studs will very probably become dirty quite quickly. All four contacts must be clean (and making good contact) for safe charging so keeping them clean will most likely negate any time saved by not having a connector.
Your charging plate too has safety concerns. Although that module has short-circuit protection, that is only for the charger module and it allows ~40Amps peak (according to link). That is a lot! Accidental connection to any conductive substance could vaporize whatever has the misfortune to come into contact with exposed terminals (depending on PSU capabilities).
What are you using to charge your battery at present? Assuming you address safety concerns could you not modify that to mate?Regards

we are building the drone from scratch. So part of the project to do a wireless station that's why I needed the wireless charging. 
probably, it will be indoor only use, so no need to worry about the weather conditions.
do you mean I should looker for a lower AMP peak for the circuit protection?
and what do you recommend to use for the AC to DC conversion?

Thanks

HiAre you looking at wireless charging or will the drone make electrical contact with the landing site?If wireless then you will be adding considerably more weight as the drone now has to carry copper coils plus electronics to handle  battery charging duties.As that circuit board appears to be taking care of charging control, it
may be that you just need to provide a suitable DC input to it.What is the capacity of your battery in Amp/Hours? I'm no expert on battery technology but I'm under the impression that a safe charge rate for LiPo is 1 x Capacity. So if your battery was rated at 1000mAh you would need a 1Amp source to fully charge it in one hour. If you can find a "wall wart" supply that can supply such that may do. Try to find one with short circuit protection inbuilt.Using an already built AC/DC converter simplifies your design and also keeps hazardous voltages away. Make sure is has CE certification (or equivalent in your country) and beware of the cheaper offerings.Regards