▎ 摘　　要

NOVELTY - The utility model claims a heat storage heating device and its system, heat storage and heating device comprises a heat exchanger, the heat exchanger comprises a conversion heat, electricity, waste heat or photovoltaic electric heat energy is in the one kind of or more kinds of exchange, phase change heat accumulator. phase change heat accumulator is provided with a low temperature in the graphene aerogel composite phase change energy-storing composite material, the conversion of energy phase-change energy-storing composite material by low temperature in the graphene aerogel composite phase change heat storage heat exchanger; the temperature measuring element, a temperature measuring element comprises a plurality of, arranged on the phase-change position of different accumulator; pumping element, pumping element whose one end is connected with the phase change heat accumulator, and the other end is connected with the heat supply end through the medium and the phase change heat accumulator heat exchange, and a controller, the controller according to the temperature signal detected by the temperature measuring element, control the phase transition heat storage time, storage time, controller controls the pumping element exchange time and the heat exchange time, wherein the controller and the phase transition thermal storage and the pumping element is electrically connected. reduce the heat supply cost.