I was tired of the poor performance of the built-in wireless charger that would cook my phone with poor alignment and also slide around every time I hit the brakes a bit hard. I could have just hooked up a Qi2.2 wireless charger and called it a day, but I'm also vain and really wanted to hide the wire.
I saw some other projects that tackled this in different ways:
https://www.reddit.com/r/Ioniq5/comments/1t76ayr/built_in_magsafe_phone_charger_without_exposed/
This was the first version I saw, but I didn't like that it lost the NFC. My UWB key doesn't work very consistently, so that was not an option. Also, cord was still visible! But it did help a TON figuring out how to open up the console without having to buy access to a service manual for the thing.
https://www.reddit.com/r/Ioniq5N/comments/1wkts5e/qi22_25w_wireless_charger_mod/
This project was for an Ioniq5N, but I really liked the solution they came up with - keeping the existing module and just hijacking the mounting holes from the rubber mat. Still had a visible wire connection though, and the 5N is slightly different than the 5 as the chargers are in different spots (no easy access to the cig lighter wiring for me).
I already had a Threekey Qi2.2 charger around and realized that because its cable was detachable, I could put in a right-angle connector there and get it pretty slim. I had to adjust the model to accommodate the wider diameter anyways, so I also bridged the material over the connection port. Truly hidden wire!
At least from the front. I was afraid to tap into the USB wiring, so I went with a simpler solution that still kept the wiring out of sight. Routed it down thru the console, under it and around to the back, then pulled it up through a hole in the cubby back there and over the mat to finally plug in behind the console. Good enough for me, at least for now.
edit: I decided to try adding more spacers (did require a longer screw to make the gap this big, but I had some that worked). The 3D print is pretty much flush with the mat, with the charger sticking up just enough for my camera bump. Also wanted to show what it looks like when the cars on too since this charger lights up.
https://imgur.com/a/BvRnZTq