Electric　vehicles　(EVs)　normally　contain　two　kinds　of　batteries:　high-voltage　(HV)　power　battery　and　low-voltage　(LV)　auxiliary　battery.　The　charging　systems　for　these　two　kinds　of　batteries　are　normally　independent　and　separate.　This　article　proposes　an　integrated　charging　system　that　combines　wireless　power　transfer　(WPT)　for　the　HV　battery　and　the　auxiliary　power　module　(APM)　for　the　LV　battery.　Part　of　the　power　electronics　converters　and　compensation　network　is　shared.　The　doubled-sided　LCC　topology　is　adopted　with　a　constant-current　output.　An　APM　transformer　is　inserted　in　the　constant-current　branch　to　pick　up　power　for　the　LV　and　also　to　guarantee　the　independent　HV　and　LV　outputs.　The　proposed　system　can　work　in　two　modes.　One　is　WPT　and　APM　where　both　the　HV　and　LV　batteries　can　be　charged　simultaneously.　The　other　is　APM　where　the　HV　battery　supplies　power　for　the　LV　battery.　The　integration　of　WPT　and　APM　can　improve　the　overall　power　density　of　the　EV　charging　system　and　reduce　the　weight　and　cost.　©　1982-2012　IEEE.