There　will　be　two　charging　systems　in　the　electric　vehicle　(EV),　namely　wireless　power　transfer　(WPT)　to　charge　the　high-voltage　battery　and　the　auxiliary　power　module　(APM)　to　charge　the　low-voltage　battery,　which　will　increase　the　cost,　volume　and　weight　of　the　EV.　This　paper　proposes　an　integrated　system　that　combines　WPT　and　APM　with　a　shared　coupler.　The　APM　system　uses　a　coupling　coil　to　directly　couple　with　the　receiving　coil　of　the　WPT　system.　The　common　structure　includes　three　parts:　the　active　rectifier,　the　compensation　network,　and　the　receiving　coil.　When　the　EV　is　charged　wirelessly,　it　is　allowed　to　charge　the　high-voltage　battery　and　the　low-voltage　battery　simultaneously.　When　the　EV　is　not　wirelessly　charged,　the　energy　can　be　transferred　from　the　high-voltage　side　to　the　low-voltage　side　through　the　coupling　between　the　receiving　coil　and　the　coil　at　the　APM　side.　The　integration　of　WPT　and　APM　can　significantly　improve　the　overall　power　density　of　the　EV　powertrain　and　reduce　its　weight　and　cost.　An　experimental　prototype　is　implemented　to　validate　the　proposal.　©　2023　IEEE.