Heat storage heating device and system thereof

The utility model relates to a heat storage heating device and a system thereof, the heat storage heating device comprises a heat exchanger, the heat exchanger comprises one or more heat exchange elements for converting photo-thermal, off-peak electricity, waste heat or photovoltaic electricity into heat energy; the phase change heat accumulator is internally provided with a graphene aerogel composite medium-low temperature phase change energy storage composite material, and energy converted by the heat exchanger is subjected to phase change heat storage through the graphene aerogel compositemedium-low temperature phase change energy storage composite material; the plurality of temperature measuring elements are arranged at different positions of the phase change heat accumulator; one endof the pumping element is connected with the phase change heat accumulator, and the other end of the pumping element is connected with the heat supply end and exchanges heat with the phase change heat accumulator through a me