Multi-port　energy　routers　are　a　core　device　that　integrates　distributed　energy　sources　and　enables　energy-to-energy　interconnections.　For　the　energy　routing　system,　the　construction　of　its　topology,　the　establishment　of　internal　model　switching　and　the　control　of　common　bus　voltage　stability　are　the　key　elements　of　the　research.　In　this　paper,　a　five-port　energy　router　structure　is　proposed,　including　a　PV　port,　an　energy　storage　port,　a　grid-connected　port,　a　DC　load　port,　and　an　AC　load　port.　Among　them,　the　energy　storage　port　and　the　grid-connected　port　involve　bidirectional　energy　flow,　which　are　the　core　ports　of　control.　For　the　system　state,　a　model　switching　strategy　is　proposed　based　on　the　topology　and　the　port　energy　flow　direction.　When　the　external　conditions　change,　the　system　can　be　stabilized　by　means　of　a　quick　response　from　the　energy　storage　port.　When　the　energy　storage　is　saturated,　the　state　is　switched,　and　the　grid-connected　port　works　to　achieve　system　stability.　The　rapid　stabilization　of　the　bus　voltage　and　the　free　flow　of　energy　are　achieved　by　combining　the　fast　response　of　the　model　predictive　control　with　the　properties　of　multiple　model　switching.　Finally,　the　feasibility　of　this　energy　router　topology　and　control　strategy　is　verified　by　building　simulations　in　MATLAB.　©　2023　by　the　authors.