Did I blow my phone up via24 v charger

Anthony Clarke most likely yes. It is possible that your board has multiple destroyed components etc. It is no longer possible to get any schematics for the Sony Xperia phones since Sony does no longer support those. You can start with a new battery and re-evaluate. If that does not work you will have to disassemble your phone and take a look for any obvious damaged components. You can post some pictures with your question so that we can se what you see. for that use this guide iFixitでの質問に画像を追加する方法