How can I repair the Ps4 controller again?

I bought the new Ps4 DualShock 2 Controller Alpine Green about two weeks ago. The X button was not really clean, so do not stop right now, but it was just slower. Then I disassembled the controller, put the X button out and plugged it all in and it got worse, then I wanted to reopen the controller but accidentally pulled out this plastic part into which you put this battery cable out of the board.

I'm looking forward to any answers.

The damage looks irreparable from here. If only the solder joints were separated you might have been able to save that but it looks too broken