Energy-saving composite phase change heat storage building envelope

Abstract

The invention relates to the related technical field of building fence structures, and discloses an energy-saving composite phase change heat storage building envelope structure which comprises a phase change heat storage plate and a heat insulation plate, the phase change heat storage plate comprises a heat storage plate shell, a first mounting groove is formed in the outer side face of the heat storage plate shell, and a first movable groove is formed in the first mounting groove; a sliding block is arranged at the first movable groove, a fourth connecting block is fixedly connected to the side face of the sliding block, a first connecting block is movably connected to the top of the fourth connecting block, a first connecting plate is fixedly connected to the side face of the first connecting block, and a spring damper and a connecting rod are fixedly connected to the side face of the first connecting plate; a second mounting groove is formed in the inner side face of the heat preservation plate shell, and a supporting block is arranged at the bottom of the second mounting groove. When the device is installed, the wall body can be fixed through the structure between the phase change heat storage plate and the heat insulation plate, the heat insulation effect is better, and meanwhile the installation process is simpler and more convenient.

Description

Technical Field

[0001] The invention relates to the technical field related to building fence structures, and in particular to an energy-saving composite phase-change heat storage building enclosure structure. Background Art

[0002] Phase change materials can efficiently store and release heat during their own phase transition. For example, solid-liquid inorganic phase change materials have the advantages of high latent heat storage capacity, low cost and non-flammability, and are one of the most promising materials for latent heat storage. Energy-saving composite phase change thermal storage building envelope is an innovative building energy-saving technology that combines the thermal storage properties of phase change materials (PCMs) and the advantages of composite building envelope structures, aiming to improve the energy efficiency and comfort of buildings.

[0003] Publication number CN211899049U discloses a new type of energy-saving composite phase-change thermal storage building envelope structure, including a phase-change thermal storage plate, a phase-change mortar surface layer and a building wall structure layer, wherein the phase-change paraffin is located inside the encapsulation layer, and the phase-change thermal storage plate is attached to the inner surface of the building wall structure layer through its outer encapsulation layer, and the outer surface of the building wall structure layer is provided with a phase-change mortar surface layer. This device can reduce or delay indoor temperature fluctuations through the phase-change heat storage and release effect of the composite phase-change thermal storage wall, thereby improving living comfort and saving energy consumption. A composite phase-change thermal storage building envelope structure is formed by combining phase-change energy storage building materials with phase-change thermal storage modules, and a phase-change enclosure structure with excellent thermal storage performance and structural performance is constructed, which breaks through the disadvantage of low thermal storage efficiency of a single phase-change enclosure structure and enriches the use of phase-change energy storage building envelope structures.

[0004] The current energy-saving composite phase change thermal storage building envelope structure is slightly insufficient in terms of wall fixation, which will cause gaps in the wall during use. Heat will be quickly conducted out from the gaps, thus affecting the overall insulation effect of the wall. It is also more troublesome to install. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an energy-saving composite phase-change thermal storage building envelope structure to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: an energy-saving composite phase-change heat storage building enclosure structure, comprising a phase-change heat storage board and a heat insulation board, wherein the phase-change heat storage board comprises a heat storage board shell, a No. 1 installation groove is provided on the outer side surface of the heat storage board shell, a No. 1 movable groove is provided at the No. 1 installation groove, a sliding block is arranged at the No. 1 movable groove, the sliding block is movably connected to the heat storage board shell, a No. 4 connecting block is fixedly connected to the side of the sliding block, a No. 1 connecting block is movably connected to the top of the No. 4 connecting block, a No. 1 connecting block is fixedly connected to the side of the No. 1 connecting block, a No. 1 connecting plate is fixedly connected to the side of the No. 1 connecting plate, a spring damper and A connecting rod, a side surface of the spring damper is fixedly connected to the heat storage plate shell, the No. 1 connecting plate and the No. 1 connecting block are movably connected to the heat storage plate shell, the connecting rod is movably connected to the heat storage plate shell, a No. 2 movable groove is provided on the side surface of the No. 4 connecting block, a No. 2 connecting block is provided at the No. 2 movable groove, the No. 2 connecting block and the No. 4 connecting block are rotatably connected, a fixing plate is provided on the side surface of the No. 2 connecting block, the heat storage plate shell and the fixing plate are fixedly connected, a sliding card plate and a No. 3 connecting block are movably connected inside the fixing plate, the sliding card plate is rotatably connected to the No. 2 connecting block, and a No. 3 movable groove is provided on the No. 3 connecting block; The heat insulation board comprises a heat insulation board shell, a No. 2 installation groove is provided on the inner side surface of the heat insulation board shell, a support block is provided at the bottom of the No. 2 installation groove, the support block is fixedly connected to the heat insulation board shell, a cavity is provided inside the heat insulation board shell, a connecting head is provided at the cavity, a movable rod is fixedly connected to the bottom of the connecting head, a connecting sleeve rod is movably connected to the bottom of the movable rod, the movable rod and the connecting head are movably connected to the heat insulation board shell, a No. 1 groove is provided on the side surface of the movable rod, a plurality of No. 2 grooves are provided on the outer surface of the heat insulation board shell, the No. 1 groove and the No. 2 groove are communicated, and a caulking agent and an adhesive are poured at the movable rod; During use, the support block is installed by aligning the support block with the No. 1 installation groove. During the movement, the support block will push the No. 4 connection block and the No. 3 connection block upwards, and the sliding block fixedly connected to the side of the No. 4 connection block slides upward inside the No. 1 movable groove. The No. 1 connection plate set on the top of the No. 4 connection block will be squeezed by the No. 4 connection block in the direction of the spring damper, so that the connecting rod moves outward and enters the cavity from the No. 2 installation groove on the outer shell of the insulation board. The connecting rod moves toward the cavity and squeezes the connecting head to both sides. The connecting head drives the movable rod to move downward, and the caulking agent and adhesive at the movable rod are discharged through the No. 1 groove and the No. 2 groove. When in use, the connection material can be poured into the connection between the phase change heat storage board and the heat insulation board. During installation, the two wall structures can be connected more conveniently, thereby improving the fixing effect of the wall. At the same time, caulking between the wall structures can reduce the gap between the structures. Reducing the gap will improve the insulation effect and make installation more convenient. When connecting block No. 4 is pushed upward by the supporting block, connecting block No. 4 drives connecting block No. 2 and the sliding card plate which are connected by side rotation to move toward connecting block No. 3. When the supporting block moves to connecting block No. 3 and contacts the outer shell of the heat storage plate, connecting block No. 3 moves to the gap between the supporting block and the outer shell of the heat insulation plate, and the sliding card plate moves horizontally to the movable groove No. 3 on connecting block No. 3, thus completing the connection between the phase change heat storage plate and the heat insulation plate, which can improve the fixing effect of the device.

[0007] Furthermore, the top of the third connecting block is fixedly connected to a limiting plate, and the limiting plate is arranged inside the fixing plate and movably connected to the fixing plate.

[0008] Furthermore, two pouring grooves are provided on the side of the insulation board shell, and the pouring grooves are communicated with the cavity. Before use, filler and adhesive are poured into the pouring grooves to facilitate adhesion during installation.

[0009] Furthermore, the side of the No. 1 connecting block facing the No. 1 movable groove is a slope structure, and the side of the No. 4 connecting block that is movably connected to the No. 1 connecting block is also a slope.

[0010] Furthermore, a heat insulation plate is provided on both outer sides of the phase change heat storage plate.

[0011] Furthermore, the thermal insulation board is provided with three layers, the middle layer of the thermal insulation board is a polystyrene wall panel. The XPS board among the polystyrene boards is selected, which has a closed-cell honeycomb structure, has better thermal insulation performance, strong water and moisture resistance, and high compressive strength. The outer layer of the thermal insulation board is a polyethylene wall panel. High-density polyethylene is a high-quality anti-collision material with good impact resistance, wear resistance and corrosion resistance. It can be used as the main material of the anti-collision wall to effectively protect the wall from impact damage.

[0012] Furthermore, the outer layer of the thermal insulation board is coated with cement paint. The cement paint has a unique cement texture, strong decorative properties, and is green, environmentally friendly, and water-based and pollution-free. The primer has the function of preventing the wall from cracking, falling off, powdering, and dusting. After spraying the topcoat, it can achieve the effects of scrub resistance, moisture resistance, and mildew resistance, thereby improving the wear resistance of the wall to a certain extent.

[0013] Furthermore, a solid-liquid phase change material is placed at the center of the phase change heat storage plate, and porous silicon dioxide is provided inside for support, which can improve the stability and shape retention ability of the solid-liquid phase change material.

[0014] Beneficial effects: 0. During use, the energy-saving composite phase-change thermal storage building envelope structure is installed by aligning the support block with the No. 1 installation groove, so that the connecting rod moves toward the cavity, and the connecting head is squeezed to both sides. The connecting head drives the movable rod to move downward, and the caulking agent and adhesive at the movable rod are discharged through the No. 1 groove and the No. 2 groove. When in use, the connection material can be poured into the connection between the phase-change thermal storage board and the thermal insulation board. During installation, the two wall structures can be connected more conveniently, thereby improving the fixing effect of the wall. At the same time, caulking between the wall structures can reduce the gap between the structures. Reducing the gap will improve the thermal insulation effect and make installation more convenient.

[0015] 1. During use of the energy-saving composite phase-change thermal storage building envelope structure, when the No. 4 connection block is pushed upward by the support block, the No. 4 connection block drives the No. 2 connection block and the sliding card plate that are connected by side rotation to move toward the No. 3 connection block. When the support block moves to the No. 3 connection block and contacts the outer shell of the thermal storage board, the No. 3 connection block moves to the gap between the support block and the outer shell of the thermal insulation board, and the sliding card plate moves horizontally to the No. 3 movable groove on the No. 3 connection block, completing the connection between the phase-change thermal storage board and the thermal insulation board, which can improve the fixing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an energy-saving composite phase-change thermal storage building envelope structure proposed by the present invention; Figure 2 A schematic diagram of the structure of a heat insulation board for an energy-saving composite phase-change thermal storage building envelope structure proposed by the present invention; Figure 3 A schematic diagram of the internal structure of a phase change thermal storage plate of an energy-saving composite phase change thermal storage building envelope structure proposed by the present invention; Figure 4 This is a schematic diagram of the connection structure of the No. 3 connection block and the No. 4 connection block inside the fixed plate of an energy-saving composite phase change thermal storage building envelope structure proposed by the present invention.

[0017] In the figure: 1. phase change heat storage plate; 101. heat storage plate shell; 102. No. 1 connecting plate; 103. No. 1 connecting block; 104. No. 1 movable groove; 105. sliding block; 106. No. 1 mounting groove; 107. No. 2 movable groove; 108. No. 3 connecting block; 109. fixing plate; 110. No. 2 connecting block; 111. spring damper; 112. connecting rod; 113. No. 4 connecting block; 114. sliding card plate; 115. No. 3 movable groove; 116. limit plate; 2. heat insulation board; 201. insulation board shell; 202. No. 2 mounting groove; 203. support block; 204. pouring groove; 205. connector; 206. No. 1 groove; 207. movable rod; 208. connecting sleeve rod; 209. No. 2 groove; 210. cavity. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1 See also Figure 1-Figure 3 An energy-saving composite phase-change thermal storage building enclosure structure comprises a phase-change thermal storage board 1 and a thermal insulation board 2. The phase-change thermal storage board 1 comprises a thermal storage board shell 101. A No. 1 mounting groove 106 is provided on the outer surface of the thermal storage board shell 101. A No. 1 movable groove 104 is provided at the No. 1 mounting groove 106. A sliding block 105 is provided at the No. 1 movable groove 104. The sliding block 105 is movably connected to the thermal storage board shell 101. A No. 4 connecting block 113 is fixedly connected to the side of the sliding block 105. The top of the No. 4 connecting block 113 is movably connected to the No. 1 connecting block 103. A No. 1 connecting plate 102 is fixedly connected to the side of the No. 1 connecting plate 102. A spring damper 111 and a connecting rod 112 are fixedly connected to the side of the spring damper 111. The side of No. 1 is fixedly connected to the heat storage plate shell 101, the No. 1 connecting plate 102 and the No. 1 connecting block 103 are movably connected to the heat storage plate shell 101, the connecting rod 112 is movably connected to the heat storage plate shell 101, the side of the No. 4 connecting block 113 is provided with a No. 2 movable groove 107, the No. 2 movable groove 107 is provided with a No. 2 connecting block 110, the No. 2 connecting block 110 and the No. 4 connecting block 113 are rotatably connected, the side of the No. 2 connecting block 110 is provided with a fixing plate 109, the heat storage plate shell 101 and the fixing plate 109 are fixedly connected, the inside of the fixing plate 109 is movably connected with a sliding card plate 114 and the No. 3 connecting block 108, the sliding card plate 114 is rotatably connected to the No. 2 connecting block 110, and the No. 3 connecting block 108 is provided with a No. 3 movable groove 115.

[0020] The thermal insulation board 2 includes an insulation board shell 201, a No. 2 installation groove 202 is opened on the inner side surface of the insulation board shell 201, a support block 203 is arranged at the bottom of the No. 2 installation groove 202, the support block 203 is fixedly connected to the insulation board shell 201, a cavity 210 is opened inside the insulation board shell 201, a connecting head 205 is arranged at the cavity 210, a movable rod 207 is fixedly connected to the bottom of the connecting head 205, a connecting sleeve rod 208 is movably connected to the bottom of the movable rod 207, the movable rod 207 and the connecting head 205 are movably connected to the insulation board shell 201, a No. 1 groove 206 is opened on the side of the movable rod 207, a plurality of No. 2 grooves 209 are opened on the outer surface of the insulation board shell 201, the No. 1 groove 206 and the No. 2 groove 209 are communicated, and the movable rod 207 is poured with filler and adhesive.

[0021] During use, by aligning the support block 203 with the No. 1 mounting groove 106 for installation, the support block 203 will push the No. 4 connecting block 113 and the No. 3 connecting block 108 upward during movement, and the sliding block 105 fixedly connected to the side of the No. 4 connecting block 113 slides upward inside the No. 1 movable groove 104, and the No. 1 connecting plate 102 set on the top of the No. 4 connecting block 113 will be squeezed toward the spring damper 111 by the No. 4 connecting block 113, so that the connecting rod 112 moves outward and enters the cavity 210 from the No. 2 mounting groove 202 on the insulation board shell 201. The connecting rod 112 moves toward the cavity 210 and squeezes the connecting head 205 to both sides. The connecting head 205 drives the movable rod 207 to move downward, and the caulking agent and adhesive at the movable rod 207 are discharged through the No. 1 groove 206 and the No. 2 groove 209. When in use, the connecting material can be poured into the connection between the phase change heat storage plate 1 and the heat insulation board 2. During installation, the two wall structures can be connected more conveniently, thereby improving the fixing effect of the wall. At the same time, caulking between the wall structures can reduce the gap between the structures. Reducing the gap will improve the insulation effect and make installation more convenient.

[0022] Embodiment 2 See also Figure 1-Figure 4An energy-saving composite phase-change thermal storage building enclosure structure comprises a phase-change thermal storage board 1 and a thermal insulation board 2. The phase-change thermal storage board 1 comprises a thermal storage board shell 101. A No. 1 mounting groove 106 is provided on the outer surface of the thermal storage board shell 101. A No. 1 movable groove 104 is provided at the No. 1 mounting groove 106. A sliding block 105 is provided at the No. 1 movable groove 104. The sliding block 105 is movably connected to the thermal storage board shell 101. A No. 4 connecting block 113 is fixedly connected to the side of the sliding block 105. The top of the No. 4 connecting block 113 is movably connected to the No. 1 connecting block 103. A No. 1 connecting plate 102 is fixedly connected to the side of the No. 1 connecting plate 102. A spring damper 111 and a connecting rod 112 are fixedly connected to the side of the spring damper 111. The side of No. 1 is fixedly connected to the heat storage plate shell 101, the No. 1 connecting plate 102 and the No. 1 connecting block 103 are movably connected to the heat storage plate shell 101, the connecting rod 112 is movably connected to the heat storage plate shell 101, the side of the No. 4 connecting block 113 is provided with a No. 2 movable groove 107, the No. 2 movable groove 107 is provided with a No. 2 connecting block 110, the No. 2 connecting block 110 and the No. 4 connecting block 113 are rotatably connected, the side of the No. 2 connecting block 110 is provided with a fixing plate 109, the heat storage plate shell 101 and the fixing plate 109 are fixedly connected, the inside of the fixing plate 109 is movably connected with a sliding card plate 114 and the No. 3 connecting block 108, the sliding card plate 114 is rotatably connected to the No. 2 connecting block 110, and the No. 3 connecting block 108 is provided with a No. 3 movable groove 115; The thermal insulation board 2 includes an insulation board shell 201, a No. 2 installation groove 202 is opened on the inner side surface of the insulation board shell 201, a support block 203 is arranged at the bottom of the No. 2 installation groove 202, the support block 203 is fixedly connected to the insulation board shell 201, a cavity 210 is opened inside the insulation board shell 201, a connecting head 205 is arranged at the cavity 210, a movable rod 207 is fixedly connected to the bottom of the connecting head 205, a connecting sleeve rod 208 is movably connected to the bottom of the movable rod 207, the movable rod 207 and the connecting head 205 are movably connected to the insulation board shell 201, a No. 1 groove 206 is opened on the side of the movable rod 207, a plurality of No. 2 grooves 209 are opened on the outer surface of the insulation board shell 201, the No. 1 groove 206 and the No. 2 groove 209 are communicated, and the movable rod 207 is poured with filler and adhesive.

[0023] When the No. 4 connection block 113 is pushed upward by the support block 203, the No. 4 connection block 113 drives the No. 2 connection block 110 and the sliding card plate 114 which are connected by side rotation to move toward the No. 3 connection block 108. When the support block 203 moves to the No. 3 connection block 108 and contacts the heat storage plate shell 101, the No. 3 connection block 108 moves to the gap between the support block 203 and the insulation plate shell 201, and the sliding card plate 114 moves horizontally to the No. 3 movable groove 115 on the No. 3 connection block 108, completing the connection between the phase change heat storage plate 1 and the heat insulation plate 2, which can improve the fixing effect of the device.

[0024] The top of the third connecting block 108 is fixedly connected to a limiting plate 116 , and the limiting plate 116 is disposed inside the fixing plate 109 and movably connected to the fixing plate 109 .

[0025] Two pouring grooves 204 are provided on the side of the insulation board shell 201 , and the pouring grooves 204 are communicated with the cavity 210 . Before use, filler and adhesive are poured into the pouring grooves 204 to facilitate adhesion during installation.

[0026] The side of the No. 1 connecting block 103 facing the No. 1 movable groove 104 is an inclined surface structure, and the side of the No. 4 connecting block 113 that is movably connected to the No. 1 connecting block 103 is also an inclined surface.

[0027] A heat insulation board 2 is arranged on both outer sides of the phase change heat storage board 1 .

[0028] The thermal insulation board 2 is provided with three layers. The middle layer of the thermal insulation board 2 is a polystyrene wallboard. The XPS board among the polystyrene boards is selected. It has a closed-cell honeycomb structure, better thermal insulation performance, strong water and moisture resistance, and high compressive strength. The outer layer of the thermal insulation board 2 is a polyethylene wallboard. High-density polyethylene is a high-quality anti-collision material with good impact resistance, wear resistance and corrosion resistance. It can be used as the main material of the anti-collision wall to effectively protect the wall from impact damage.

[0029] The outer layer of the thermal insulation board 2 is coated with cement paint, which has a unique cement texture, strong decorative properties, and is green, environmentally friendly, and water-based and pollution-free. The primer has the function of preventing the wall from cracking, falling off, powdering, and dusting. After spraying the topcoat, it can achieve the effects of scrub resistance, moisture resistance, and mildew resistance, thereby improving the wear resistance of the wall to a certain extent.

[0030] A solid-liquid phase change material is placed at the center of the phase change heat storage plate 1, and porous silicon dioxide is also provided inside for support, which can improve the stability and shape retention ability of the solid-liquid phase change material.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving composite phase-change thermal storage building envelope structure, comprising a phase-change thermal storage board (1) and a thermal insulation board (2), characterized in that: The phase change heat storage plate (1) comprises a heat storage plate shell (101); a first installation groove (106) is provided on the outer surface of the heat storage plate shell (101); a first movable groove (104) is provided at the first installation groove (106); a sliding block (105) is provided at the first movable groove (104); the sliding block (105) is movably connected to the heat storage plate shell (101); a fourth connecting block (113) is fixedly connected to the side of the sliding block (105); the top of the fourth connecting block (113) is movably connected to the first connecting block (103); a first connecting plate (102) is fixedly connected to the side of the first connecting plate (102); a spring damper (111) and a connecting rod (112) are fixedly connected to the side of the spring damper (111); the side of the spring damper (111) is fixedly connected to the heat storage plate shell (101); The No. 1 connecting plate (102) and the No. 1 connecting block (103) are movably connected to the heat storage plate housing (101); the connecting rod (112) is movably connected to the heat storage plate housing (101); a No. 2 movable groove (107) is provided on the side of the No. 4 connecting block (113); a No. 2 connecting block (110) is provided at the No. 2 movable groove (107); the No. 2 connecting block (110) and the No. 4 connecting block (113) are rotatably connected; a fixing plate (109) is provided on the side of the No. 2 connecting block (110); the heat storage plate housing (101) and the fixing plate (109) are fixedly connected; a sliding card plate (114) and a No. 3 connecting block (108) are movably connected inside the fixing plate (109); the sliding card plate (114) is rotatably connected to the No. 2 connecting block (110); and a No. 3 movable groove (115) is provided on the No. 3 connecting block (108); The heat insulation board (2) comprises a heat insulation board shell (201), a second installation groove (202) is provided on the inner side surface of the heat insulation board shell (201), a support block (203) is provided at the bottom of the second installation groove (202), the support block (203) is fixedly connected to the heat insulation board shell (201), a cavity (210) is provided inside the heat insulation board shell (201), a connector (205) is provided at the cavity (210), and the bottom of the connector (205) is fixedly connected to A movable rod (207), wherein the bottom of the movable rod (207) is movably connected to a connecting sleeve rod (208), the movable rod (207) and the connecting head (205) are movably connected to the insulation board shell (201), a first groove (206) is provided on the side of the movable rod (207), a plurality of second grooves (209) are provided on the outer surface of the insulation board shell (201), the first groove (206) and the second groove (209) are communicated, and a caulking agent and an adhesive are poured at the movable rod (207); During use, the support block (203) is installed by aligning the support block (203) with the No. 1 installation groove (106). During the movement, the support block (203) pushes the No. 4 connection block (113) and the No. 3 connection block (108) upwards, and the sliding block (105) fixedly connected to the side of the No. 4 connection block (113) slides upward inside the No. 1 movable groove (104). The No. 1 connection plate (102) arranged on the top of the No. 4 connection block (113) is pressed toward the spring damper (111) by the No. 4 connection block (113), so that the connecting rod ( 112) moves outward and enters the cavity (210) from the second installation groove (202) on the insulation board shell (201), the connecting rod (112) moves toward the cavity (210) and squeezes the connecting head (205) toward both sides, the connecting head (205) drives the movable rod (207) to move downward, and the caulking agent and adhesive at the movable rod (207) are discharged through the first groove (206) and the second groove (209), so that the connection material can be poured into the connection between the phase change heat storage plate (1) and the heat insulation board (2) when in use; When the No. 4 connection block (113) is pushed upward by the support block (203), the No. 4 connection block (113) drives the No. 2 connection block (110) and the sliding card plate (114) that are connected by side rotation to move in the direction of the No. 3 connection block (108). When the support block (203) moves to the No. 3 connection block (108) and contacts the heat storage plate shell (101), the No. 3 connection block (108) moves to the gap between the support block (203) and the heat insulation plate shell (201), and the sliding card plate (114) moves horizontally to the No. 3 movable groove (115) on the No. 3 connection block (108), thereby completing the connection between the phase change heat storage plate (1) and the heat insulation plate (2).

2. The energy-saving composite phase-change thermal storage building envelope structure according to claim 1 is characterized in that: The top of the third connection block (108) is fixedly connected to a limit plate (116), and the limit plate (116) is arranged inside the fixed plate (109) and is movably connected to the fixed plate (109).

3. The energy-saving composite phase-change thermal storage building envelope structure according to claim 1, characterized in that: Two pouring grooves (204) are provided on the side of the insulation board shell (201), and the pouring grooves (204) are in communication with the cavity (210).

4. The energy-saving composite phase-change thermal storage building envelope structure according to claim 1, characterized in that: The side of the No. 1 connecting block (103) facing the No. 1 movable groove (104) is an inclined surface structure, and the side of the No. 4 connecting block (113) that is movably connected to the No. 1 connecting block (103) is also an inclined surface.

5. The energy-saving composite phase-change thermal storage building envelope structure according to claim 1 is characterized by: A heat insulation plate (2) is provided on both outer sides of the phase-change heat storage plate (1).

6. The energy-saving composite phase-change thermal storage building envelope structure according to claim 5, characterized in that: The heat insulation board (2) is provided with three layers, the middle layer of the heat insulation board (2) is a polystyrene wallboard, and the outer layer of the heat insulation board (2) is a polyethylene wallboard.

7. The energy-saving composite phase-change thermal storage building envelope structure according to claim 6, characterized in that: The outer layer of the heat insulation board (2) is coated with cement paint.

8. The energy-saving composite phase-change thermal storage building envelope structure according to claim 1, characterized in that: A solid-liquid phase change material is placed at the center of the phase change heat storage plate (1), and porous silicon dioxide is also provided inside for support.

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