The　sensible　and　latent　heat　storage　system　(CSLHS)　has　become　a　research　hotspot.　In　this　paper,　we　construct　a　thermal　storage　unit　structure　by　using　the　method　of　cubic　macro-encapsulation,　and　its　charging　performance　is　simulated　by　CFD.　The　material　of　sensible　heat　storage　is　magnesia　brick　or　concrete,　and　the　material　of　the　latent　heat　storage　is　molten　salt.　First,　we　analyze　the　effects　of　different　heat　surfaces　on　the　charging　performance　of　the　CSLHS.　The　charging　performance　is　better　when　heating　from　the　bottom　than　when　heating　from　the　top　or　the　side.　Then,　the　heat　storage　of　concrete　brick　and　CSLHS　is　compared,　under　the　premise　of　heating　from　the　bottom　surface.　When　the　PCM　starts　to　melt,　the　heat　transfer　inside　the　hybrid　configuration　is　39%　higher　than　the　solid　heat　storage　structure.　When　the　heat　storage　is　nearing　completion,　its　temperature　distribution　is　more　uniform　than　the　solid　heat　storage　structure,　and　its　heat　transfer　inside　the　hybrid　configuration　is　at　the　same　level　as　the　concrete.　©　Published　under　licence　by　IOP　Publishing　Ltd.