The　rapid　development　of　electric　vehicles　has　put　forward　higher　requirements　for　various　technologies　of　electric　vehicles.　One　of　the　key　components　is　the　battery,　which　serves　as　the　power　source　for　electric　vehicles.　A　suitable　charging　system　can　improve　the　safety　and　efficiency　of　electric　vehicle　battery　charging,　as　well　as　extend　the　battery＇s　service　life　and　endurance.　In　this　paper,　an　EV　wireless　charging　system　is　proposed　by　employing　an　integrated　solution　for　an　electric　vehicle　charging　system.　The　system　can　switch　between　different　charging　modes　to　meet　the　charging　needs　in　different　situations,　including　wireless　power　transfer　(WPT),　onbard　charger　(OBC),　and　auxiliary　power　module　(APM).　Different　modes　have　different　working　frequencies.　The　leakage　compensation　model　is　used　on　the　vehicle　charging　side,　high-voltage　receiving　side,　and　low-voltage　receiving　side,　while　LCC　compensation　is　used　on　the　wireless　charging　side　to　achieve　the　required　voltage　ratio.　The　mathematical　model　of　the　integration　of　the　WPT,　OBC,　and　APM　systems　is　established　and　verified　in　simulation.　　©　2024　IEEE.