Phase change heat storage device and heating and ventilation system

Abstract

The utility model discloses a phase change heat storage device and a heating and ventilation system.The phase change heat storage device comprises at least one phase change heat storage unit, each phase change heat storage unit comprises a heat exchanger and a pipeline assembly, each heat exchanger comprises at least two energy charging flow paths and at least two energy discharging flow paths, and each energy charging flow path is provided with an energy charging inlet and an energy charging outlet; the pipeline assembly comprises an energy charging inlet flow path and an energy charging outlet flow path, the energy charging inlet flow path comprises a first connecting pipeline, the first connecting pipeline comprises a first main pipe and at least two first branch pipes, the first main pipe is communicated with the first branch pipes, the first branch pipes are communicated with energy charging inlets of the energy charging flow paths, and the energy charging outlet flow path comprises a second connecting pipe. The second connecting pipeline comprises a second main pipe and at least two second branch pipes, the second main pipe is communicated with the second branch pipes, and the second branch pipes are communicated with the energy charging outlets of the energy charging flow paths. According to the phase change heat storage device, the pipeline design is optimized, so that installation, leakage detection and leakage repairing of the pipeline are more convenient and faster.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and in particular to a phase change heat storage device and a heating and ventilation system. Background Art

[0002] At present, in a phase change heat storage device, the heat exchange pipeline usually includes a heat storage flow path and a heat release flow path. The heat storage flow path is connected to an external heat source, and the heat release flow path is connected to domestic water. The phase change heat storage device is filled with phase change material. The heat storage flow path is used to store heat for the phase change material, and the heat release flow path is used to extract heat from the phase change material.

[0003] In the prior art, in order to facilitate the installation of the heat exchange pipeline in the same direction as the filling direction of the phase change material, the input pipe and output pipe of the heat exchange pipeline are generally led out from the side of the heat exchanger, and then gathered at the top of the heat exchanger and connected to the main pipe, and the heat exchange pipeline is designed to have one inlet and one outlet. At the same time, in order to improve the utilization efficiency of the phase change material, the heat exchange pipeline is generally designed to be more compact, resulting in inconvenience in installation. In addition, too many pipelines also increase the overall volume of the phase change heat storage device, which is not conducive to the miniaturization and lightweight of the phase change heat storage device. Utility Model Content

[0004] The embodiments of the present application provide a phase change heat storage device and a HVAC system, which make pipeline installation, leak detection and leak repair more convenient by optimizing pipeline design.

[0005] In a first aspect, an embodiment of the present application provides a phase change heat storage device, comprising at least one phase change heat storage unit, the phase change heat storage unit comprising: a heat exchanger, the heat exchanger comprising at least two charging flow paths and at least two discharging flow paths, the charging flow path having a charging inlet and a charging outlet; a pipeline assembly, the pipeline assembly comprising a charging inlet flow path and a charging outlet flow path, the charging inlet flow path comprising a first connecting pipeline, the first connecting pipeline comprising a first main pipe and at least two first branches, the first main pipe being connected to each first branch, each first branch being connected to the charging inlet of each charging flow path, the charging outlet flow path comprising a second connecting pipeline, the second connecting pipeline comprising a second main pipe and at least two second branches, the second main pipe being connected to each second branch, and each second branch being connected to the charging outlet of each charging flow path.

[0006] In some embodiments, the first connecting pipeline further includes: a charging inlet main pipe, which is connected to the first main pipe; and at least two charging inlet branch pipes, each of which is connected to the charging inlet main pipe, and a port at one end of each charging inlet branch pipe away from the charging inlet main pipe is connected to the first branch pipe.

[0007] In some of these embodiments, the charging inlet main pipe extends along a first axis, each charging inlet branch pipe extends along a second axis direction, and the second axes of the plurality of charging inlet branch pipes are all located in a first plane; wherein, the first axis is located in the first plane, or, the first axis is located in a second plane intersecting the first plane.

[0008] In some of these embodiments, the second connection pipeline further includes: a charging outlet main pipe, the charging outlet main pipe is communicated with the second main pipe; and, at least two charging outlet branch pipes, each charging outlet branch pipe is connected to the charging outlet main pipe, and the port at one end of each charging outlet branch pipe away from the charging outlet main pipe is communicated with the second branch pipe.

[0009] In some of these embodiments, the charging outlet main pipe extends along a third axis, each charging outlet branch pipe extends along a fourth axis direction, and the fourth axes of the plurality of charging outlet branch pipes are all located in a third plane; wherein, the third axis is located in the third plane, or, the third axis is located in a fourth plane intersecting the third plane.

[0010] In some of these embodiments, a plurality of phase change heat storage units are included, the charging inlet flow path further includes a charging inlet main pipe and a charging inlet manifold, there are a plurality of first connection pipelines, the charging inlet manifold is communicated with the charging inlet main pipe, and the plurality of first main pipes of the plurality of first connection pipelines are all communicated with the charging inlet manifold; the charging outlet flow path further includes a charging outlet main pipe and a charging outlet manifold, there are a plurality of second connection pipelines, the charging outlet manifold is communicated with the charging outlet main pipe, and the plurality of second main pipes of the plurality of second connection pipelines are all communicated with the charging outlet manifold.

[0011] In some of these embodiments, the phase change heat storage unit has a first end and a second end opposite to each other along a first direction, the charging inlet is located at the first end, the charging outlet is located at the second end, the charging inlet main pipe, the charging inlet manifold, the charging outlet main pipe, and the charging outlet manifold are located on the same side of the heat exchanger along the first direction and close to the first end; the first main pipe includes a first charging inlet pipe section and a second charging inlet pipe section that are communicated with each other, the first charging inlet pipe sections of the plurality of first main pipes are all located on the same side of the heat exchanger along a second direction, and the second charging inlet pipe sections of the plurality of first main pipes are all located on the same side of the heat exchanger along the first direction and close to the first end; the second main pipe includes a first charging outlet pipe section and a second charging outlet pipe section that are communicated with each other, the first charging outlet pipe sections of the plurality of second main pipes are all located on the same side of the heat exchanger along the second direction, and the second charging outlet pipe sections of the plurality of second main pipes are all located on the same side of the heat exchanger along the first direction and close to the first end, and the second direction is perpendicular to the first direction.

[0012] In some of these embodiments, the exothermic flow path has an exothermic inlet and an exothermic outlet. The pipeline assembly further includes an exothermic inlet flow path and an exothermic outlet flow path. The exothermic inlet flow path includes a third connecting pipeline, and the third connecting pipeline includes a third main pipe and at least two third branch pipes. The third main pipe communicates with each third branch pipe, and each third branch pipe communicates with the exothermic inlet of each exothermic flow path. The exothermic outlet flow path includes a fourth connecting pipe, and the fourth connecting pipeline includes a fourth main pipe and at least two fourth branch pipes. The fourth main pipe communicates with each fourth branch pipe, and each fourth branch pipe communicates with the exothermic outlet of each exothermic flow path.

[0013] In some of these embodiments, a plurality of phase change heat storage units are included. The exothermic inlet flow path further includes an exothermic inlet main pipe and an exothermic inlet manifold. There are a plurality of third connecting pipelines. The exothermic inlet manifold communicates with the exothermic inlet main pipe, and the third main pipes of the plurality of third connecting pipelines all communicate with the exothermic inlet manifold. The exothermic outlet flow path further includes an exothermic outlet main pipe and an exothermic outlet manifold. There are a plurality of fourth connecting pipelines. The exothermic outlet manifold communicates with the exothermic outlet main pipe, and the fourth main pipes of the plurality of fourth connecting pipelines all communicate with the exothermic outlet manifold.

[0014] In some of these embodiments, the phase change heat storage unit has a first end and a second end opposite to each other along a first direction. The exothermic inlet is located at the second end, and the exothermic outlet is located at the first end. The exothermic inlet main pipe, the exothermic inlet manifold, the exothermic outlet main pipe, and the exothermic outlet manifold are located on the same side of the heat exchanger along the first direction and close to the first end. The third main pipe includes a first exothermic inlet pipe section and a second exothermic inlet pipe section that are connected and communicate. The first exothermic inlet pipe sections of the plurality of third main pipes are all located on the same side of the heat exchanger along a second direction, and the second exothermic inlet pipe sections of the plurality of third main pipes are all located on the same side of the heat exchanger along the first direction and close to the second end. The fourth main pipe includes a first exothermic outlet pipe section and a second exothermic outlet pipe section that are connected and communicate. The first exothermic outlet pipe sections of the plurality of fourth main pipes are all located on the same side of the heat exchanger along a second direction, and the second exothermic outlet pipe sections of the plurality of fourth main pipes are all located on the same side of the heat exchanger along the first direction and close to the first end. The second direction is perpendicular to the first direction.

[0015] In some of these embodiments, the phase change heat storage unit has a first end and a second end opposite to each other along a first direction. The charging inlet is located at the first end, the charging outlet is located at the second end, and the exothermic flow path has an exothermic inlet located at the second end and an exothermic outlet located at the first end.

[0016] In some of these embodiments, the charging flow path includes a plurality of charging pipe sections distributed along its flow direction, and the plurality of charging pipe sections are spaced apart along the first direction. The exothermic flow path includes a plurality of exothermic pipe sections distributed along its flow direction, and the plurality of exothermic pipe sections are spaced apart along the first direction. Among them, along the first direction, two adjacent charging pipe sections correspond to one exothermic pipe section, and one charging pipe section corresponds to the space between two adjacent exothermic pipe sections.

[0017] In some of these embodiments, multiple charging pipe segments of each charging flow path are all located within a charging mounting surface, and multiple discharging pipe segments of each discharging flow path are all located within a discharging mounting surface. Among them, the charging mounting surface and the discharging mounting surface are spaced apart along a third direction, and / or, along the third direction, a discharging mounting surface is provided between every two adjacent charging mounting surfaces, and / or, along the third direction, a charging mounting surface is provided between every two adjacent discharging mounting surfaces. The third direction is perpendicular to the first direction.

[0018] In some of these embodiments, the charging pipe segments extend along a second direction, the discharging pipe segments extend along the second direction, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0019] In some of these embodiments, the charging flow path further includes a charging connection pipe connected between two adjacent charging pipe segments along its flow direction, and two adjacent charging connection pipes are located on opposite sides of multiple charging pipe segments along the second direction; and / or, the discharging flow path further includes a discharging connection pipe connected between two adjacent discharging pipe segments along its flow direction, and two adjacent discharging connection pipes are located on opposite sides of multiple discharging pipe segments along the second direction.

[0020] In some of these embodiments, the first connection pipeline and the second connection pipeline include any one of an aluminum pipe, an aluminum alloy pipe, a copper pipe, a copper alloy pipe, and a stainless steel pipe; and / or, the third connection pipeline and the fourth connection pipeline include any one of a copper pipe, a copper alloy pipe, and a stainless steel pipe; and / or, the charging flow path and the discharging flow path include any one of a copper pipe and a copper alloy pipe; and / or, the discharging inlet main pipe, the discharging inlet manifold, the discharging outlet main pipe, and the discharging outlet manifold include stainless steel pipes.

[0021] In some of these embodiments, the charging inlet main pipe, the charging inlet manifold, the charging outlet main pipe, and the charging outlet manifold include stainless steel pipes.

[0022] In some of these embodiments, the phase change heat storage device further includes a positioning assembly, and the positioning assembly further includes a fixing structure that extends along the third direction and is fixedly connected to multiple phase change heat storage units.

[0023] In some of these embodiments, the fixing structure includes: two top connectors connected to the tops of multiple phase change heat storage units, and the top connectors are arranged oppositely along the second direction; and two bottom connectors connected to the bottoms of multiple phase change heat storage units, and the bottom connectors are arranged oppositely along the second direction.

[0024] In some of these embodiments, the top connector includes: a first connecting top plate, including a main board extending in the third direction and a plurality of mounting side plates extending in the first direction and spaced apart in the third direction, each mounting side plate connecting to the top of the phase change heat storage unit; a second connecting top plate, the second connecting top plate extending in the first direction, the second connecting top plate being connected to the main board, and the second connecting top plate being provided with hoisting holes spaced apart in the third direction.

[0025] In some of these embodiments, the phase change heat storage device further includes: a phase change heat storage material; an inner container having an accommodating space, with a plurality of phase change heat storage units and the phase change heat storage material located in the accommodating space; and an outer shell sleeved outside the inner container.

[0026] In some of these embodiments, the phase change heat storage device further includes a positioning assembly, and the positioning assembly further includes a limiting assembly. The phase change heat storage unit has a first end and a second end opposite to each other in the first direction, and the limiting assembly is installed at the second end of the phase change heat storage unit.

[0027] In some of these embodiments, the limiting assembly includes two limiting members arranged opposite to each other in the second direction, and at least a part of each limiting member protrudes in the second direction from the phase change heat storage unit, with the first direction being perpendicular to the second direction.

[0028] In some of these embodiments, the limiting member includes: a limiting plate protruding in the second direction from the phase change heat storage unit, the limiting plate being opposite to and spaced apart from the phase change heat storage unit in the second direction; and a connecting plate connecting the limiting plate and the phase change heat storage unit.

[0029] In some of these embodiments, the connecting plate includes: a connecting bottom plate connecting one end of the limiting plate close to the second end and extending towards the phase change heat storage unit; and a connecting side plate connecting the end of the connecting bottom plate away from the limiting plate and extending away from the second end, with the connecting side plate connecting to the phase change heat storage unit.

[0030] In some of these embodiments, a connecting hole extending in the second direction is provided on the connecting side plate, and the connecting side plate and the phase change heat storage unit are connected by a locking member passing through the connecting hole; an avoidance hole corresponding to the connecting hole is provided on the limiting plate.

[0031] In some of these embodiments, the limiting member further includes: a transition plate connecting the limiting plate and the connecting plate, with the transition plate being set at an obtuse angle relative to both the limiting plate and the connecting plate.

[0032] In some of these embodiments, the phase change heat storage device further includes a positioning assembly, and the positioning assembly further includes a mounting structure. The phase change heat storage unit has a first end and a second end opposite to each other in the first direction, and the mounting structure is close to the first end of the phase change heat storage unit and connects the phase change heat storage unit and the inner container.

[0033] In some of these embodiments, the mounting structure includes: a first mounting member mounted on the phase change heat storage unit, the first mounting member including a first mounting plate that is opposite to and spaced apart from the second end of the phase change heat storage unit; and a second mounting member mounted on the inner wall of the inner container, the second mounting member including a third mounting plate that is stacked with the first mounting plate and connected to the first mounting plate.

[0034] In some of these embodiments, the mounting structure includes: a first mounting member including a first mounting plate and a second mounting plate connecting the first mounting plate, the first mounting plate being connected to the inner container, the second mounting plate being connected to the phase change heat storage unit, and at least one of the first mounting plate and the second mounting plate being provided with a through hole for a partial structure of the pipeline assembly to pass through.

[0035] In some of these embodiments, a sealing ring is provided between a partial structure of the pipeline assembly and the inner wall surface of the through hole.

[0036] In some of these embodiments, the phase change heat storage device includes two mounting structures, which are respectively arranged corresponding to both sides of the phase change heat storage unit in the third direction, so as to connect both sides of the phase change heat storage unit in the third direction to the inner container respectively.

[0037] In some of these embodiments, the phase change heat storage device further includes a heat insulation layer located between the inner container and the outer shell. The heat insulation layer includes a first heat insulation layer and a second heat insulation layer. The first heat insulation layer is closer to the inner container than the second heat insulation layer, and the hardness of the first heat insulation layer is lower than that of the second heat insulation layer.

[0038] In some of these embodiments, the first heat insulation layer includes at least one of a sponge layer and a rubber layer; and / or, the second heat insulation layer includes at least one of a vacuum insulation panel and a polyurethane panel.

[0039] In some of these embodiments, the phase change heat storage unit further includes a fin group. The fin group includes a plurality of sheet-like fins. The fins have openings for pipes to pass through; wherein, the fins include aluminum sheets.

[0040] In a second aspect, an embodiment of the present application provides a heating and ventilation system, which includes the above-mentioned phase change heat storage device.

[0041] The phase change heat storage device based on the embodiment of the present application includes at least one phase change heat storage unit. Among them, the phase change heat storage unit includes a heat exchanger and a pipeline assembly. The heat exchanger is provided with a charging flow path and a discharging flow path. The charging flow path is used to provide energy to the phase change material, and the discharging flow path is used to extract energy from the phase change material when needed. The pipeline assembly is responsible for transporting the fluid.

[0042] On the one hand, the pipeline assembly distributes the fluid to each energy charging flow path. On the other hand, the pipeline assembly is also responsible for collecting the fluid flowing out of each energy charging flow path, so as to ensure that the fluid can enter or flow out of the energy charging flow path evenly, improving the efficiency of energy exchange.

[0043] Furthermore, the energy charging inlet flow path includes a first connecting pipeline, and the first connecting pipeline includes a first main pipe and at least two first branch pipes. Among them, the first main pipe is a main pipeline. As the starting point of each first branch pipe, the first main pipe can play a role in gathering each first branch pipe, connecting corresponding multiple energy charging flow paths. By setting the first main pipe, the number of pipelines connecting the energy charging inlet flow path and the energy charging flow path can be effectively reduced, so that the pipelines inside the phase change heat storage device will not be too dense, which is convenient for installing the corresponding pipeline structure, and can also reserve a certain space for subsequent leak detection and leak repair, facilitating subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0045] Figure 1 It is a schematic three-dimensional structure diagram of a phase change heat storage device in an embodiment of the present application;

[0046] Figure 2 For Figure 1 the schematic three-dimensional structure diagram of the heat exchanger in;

[0047] Figure 3 It is a schematic three-dimensional structure diagram of a phase change heat storage device in an embodiment of the present application;

[0048] Figure 4 For Figure 3 the schematic three-dimensional structure diagram of the pipeline assembly in;

[0049] Figure 5 For Figure 3 the schematic three-dimensional structure diagram of the pipeline assembly in;

[0050] Figure 6 For Figure 3 the schematic three-dimensional structure diagram of the pipeline assembly in;

[0051] Figure 7 For Figure 3 the schematic three-dimensional structure diagram of the pipeline assembly in;

[0052] Figure 8 For Figure 3An enlarged perspective view at A;

[0053] Figure 9 is Figure 3 A schematic cross-sectional view in;

[0054] Figure 10 is Figure 3 A schematic cross-sectional view in;

[0055] Figure 11 A schematic three-dimensional structure view of the limiting member;

[0056] Figure 12 is Figure 11 An enlarged view at C in;

[0057] Figure 13 is Figure 11 An enlarged view at C in;

[0058] Figure 14 A disassembled schematic view of the installation structure;

[0059] Figure 15 An assembled schematic view of the installation structure;

[0060] Figure 16 An installation schematic view of the second installation member;

[0061] Figure 17 A cross-sectional view of the assembled installation structure;

[0062] Figure 18 A disassembled schematic view of the fixing structure;

[0063] Figure 19 An installation schematic view of the fixing structure;

[0064] Figure 20 is Figure 19 An enlarged view of;

[0065] Figure 21 A schematic three-dimensional structure view of the phase change heat storage device in an embodiment of the present application;

[0066] Figure 22 is Figure 21 A disassembled schematic view of the phase change heat storage device in;

[0067] Figure 23 is Figure 21 A perspective view of the phase change heat storage device in;

[0068] Figure 24 is Figure 21 A disassembled schematic view of the heat insulation layer in;

[0069] Figure 25 is Figure 21Cross-sectional view of the intermediate phase change heat storage device.

[0070] Reference numerals:

[0071] 1000, Phase change heat storage device;

[0072] 1, Phase change heat storage unit; 1a, First end; 1b, Second end;

[0073] 11, Heat exchanger;

[0074] 111, Charging flow path; 111a, Charging inlet; 111b, Charging outlet; 1111, Charging pipe section; 1112, Charging connecting pipe;

[0075] 112, Discharging flow path; 112a, Discharging inlet; 112b, Discharging outlet; 1121, Discharging pipe section; 1122, Discharging connecting pipe;

[0076] 12, Pipeline assembly;

[0077] 121, Charging inlet flow path; 1211, First connecting pipeline; 1211a, First main pipe; 1211a’, First charging inlet pipe section; 1211a", Second charging inlet pipe section; 1211b, First branch pipe; 1211c, Charging inlet main pipe; 1211d, Charging inlet sub-pipe; 1212, Charging inlet manifold; 1213, Charging inlet main line;

[0078] 122, Charging outlet flow path; 1221, Second connecting pipeline; 1221a, Second main pipe; 1221a’, First charging outlet pipe section; 1221a", Second charging outlet pipe section; 1221b, Second branch pipe; 1221c, Charging outlet main pipe; 1221d, Charging outlet sub-pipe; 1222, Charging outlet main line; 1223, Charging outlet manifold;

[0079] 123, Discharging inlet flow path; 1231, Third connecting pipeline; 1231a, Third main pipe; 1231a’, First discharging inlet pipe section; 1231a", Second discharging inlet pipe section; 1231b, Third branch pipe; 1232, Discharging inlet main line; 1233, Discharging inlet manifold;

[0080] 124, Discharging outlet flow path; 1241, Fourth connecting pipeline; 1241a, Fourth main pipe; 1241a’, First discharging outlet pipe section; 1241a", Second discharging outlet pipe section; 1241b, Fourth branch pipe; 1242, Discharging outlet main line; 1243, Discharging outlet manifold;

[0081] 2, Positioning assembly;

[0082] 21. Fixed structure; 211. Top connecting member; 2111. First connecting top plate; 2111a. Main board; 2111b. Mounting side plate; 2112. Second connecting top plate; 2112a. Hoisting hole position; 212. Bottom connecting member;

[0083] 22. Limiting member; 221. Limiting plate; 221a. Avoidance hole; 222. Connecting plate; 2221. Connecting bottom plate; 2222. Connecting side plate; 2222a. Connecting hole; 223. Transition plate;

[0084] 23. Mounting structure; 231. First mounting member; 2311. First mounting plate; 2312. Second mounting plate; 2313. Through hole; 2314. Sealing ring; 232. Second mounting member; 2321. Third mounting plate;

[0085] 100. Inner container;

[0086] 200. Phase change heat storage material;

[0087] 300. Outer shell; 310. Outer side plate; 311. Pipe passing orifice; 312. Wire passing orifice; 320. Outer top plate; 330. Outer bottom plate; 340. Outer support feet;

[0088] 400. Thermal insulation layer; 410. First thermal insulation layer; 420. Second thermal insulation layer;

[0089] X. First direction; Y. Second direction; Z. Third direction. Specific embodiments

[0090] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0091] Currently, in a phase change heat storage device, the heat exchange pipeline usually includes a heat storage flow path and a heat release flow path. The heat storage flow path is connected to an external heat source, the heat release flow path is connected to domestic water, a phase change material is filled in the phase change heat storage device, the heat storage flow path is used to store heat for the phase change material, and the heat release flow path is used to extract heat from the phase change material.

[0092] In the prior art, in order to facilitate the installation direction of the heat exchange pipeline to be the same as the filling direction of the phase change material, generally, the input pipe and the output pipe of the heat exchange pipeline are led out from the side of the heat exchanger, and then aggregated to the top of the heat exchanger to be connected to the main pipe. The heat exchange pipeline is designed to have one inlet and one outlet. At the same time, in order to improve the utilization efficiency of the phase change material, the heat exchange pipeline is generally designed to be relatively compact, resulting in a dense heat exchange pipeline on the side of the heat exchanger, which makes installation inconvenient, and the excessive pipelines also increase the overall volume of the phase change heat storage device, which is not conducive to the miniaturization and light weight of the phase change heat storage device.

[0093] To solve the above technical problems, please refer to Figures 1 - 5 , the present application proposes a phase change heat storage device 1000, which includes at least one phase change heat storage unit 1. The phase change heat storage unit 1 includes a heat exchanger 11 and a pipeline assembly 12. The heat exchanger 11 includes at least two charging flow paths 111 and at least two discharging flow paths 112. The charging flow path 111 has a charging inlet 111a and a charging outlet 111b; the pipeline assembly 12 includes a charging inlet flow path 121 and a charging outlet flow path 122. The charging inlet flow path 121 includes a first connecting pipeline 1211. The first connecting pipeline 1211 includes a first main pipe 1211a and at least two first branch pipes 1211b. The first main pipe 1211a is communicated with each first branch pipe 1211b, and each first branch pipe 1211b is communicated with the charging inlet 111a of each charging flow path 111. The charging outlet flow path 122 includes a second connecting pipe. The second connecting pipeline 1221 includes a second main pipe 1221a and at least two second branch pipes 1221b. The second main pipe 1221a is communicated with each second branch pipe 1221b, and each second branch pipe 1221b is communicated with the charging outlet 111b of each charging flow path 111.

[0094] The phase change heat storage device 1000 based on the embodiment of the present application includes at least one phase change heat storage unit 1. Among them, the phase change heat storage unit 1 includes a heat exchanger 11 and a pipeline assembly 12. The heat exchanger 11 is provided with a charging flow path 111 and a discharging flow path 112. The charging flow path 111 is used to provide energy to the phase change material, and the discharging flow path 112 extracts energy from the phase change material when needed. The pipeline assembly 12 is responsible for transporting the fluid. On the one hand, the pipeline assembly 12 distributes the fluid to each charging flow path 111. On the other hand, the pipeline assembly 12 is also responsible for collecting the fluid flowing out of each charging flow path 111, so as to ensure that the fluid can enter or flow out of the charging flow path 111 evenly, and improve the energy exchange efficiency.

[0095] Furthermore, the charging inlet flow path 121 includes a first connecting pipeline 1211. The first connecting pipeline 1211 includes a first main pipe 1211a and at least two first branch pipes 1211b. Among them, the first main pipe 1211a is a main pipeline. The first main pipe 1211a serves as the starting point of each first branch pipe 1211b and can play a role in collecting each first branch pipe 1211b to connect multiple charging flow paths 111 corresponding to the multiple first branch pipes 1211b. Similarly, the second main pipe 1221a can collect each second branch pipe 1221b to connect the corresponding multiple charging outlet flow paths 122. By setting the first main pipe 1211a and the second main pipe 1221a, the number of pipelines connecting the charging inlet flow path 121 and the charging outlet flow path 122 can be effectively reduced, so that the pipelines inside the phase change heat storage device 1000 will not be too dense, facilitating the installation of the corresponding pipeline structure, and can also reserve a certain space for subsequent leak detection and leak repair, facilitating subsequent maintenance.

[0096] Please refer to Figure 4 and Figure 5 , the first connecting pipeline 1211 further includes a charging inlet main pipe 1211c and at least two charging inlet branch pipes 1211d. The charging inlet main pipe 1211c is connected to the first main pipe 1211a. Each charging inlet branch pipe 1211d is connected to the charging inlet main pipe 1211c. The port at one end of each charging inlet branch pipe 1211d away from the charging inlet main pipe 1211c is connected to the first branch pipe 1211b. It can be understood that when the fluid flows to the charging inlet main pipe 1211c, it is divided from the charging inlet main pipe 1211c to at least two charging inlet branch pipes 1211d connected thereto. In the embodiment of the present application, the charging inlet main pipe 1211c and at least two charging inlet branch pipes 1211d are an integral structure. The charging inlet main pipe 1211c and the first main pipe 1211a are correspondingly inserted, and the charging inlet branch pipes 1211d and the first branch pipes 1211b are correspondingly inserted.

[0097] Further, in some embodiments, the sizes of the respective charging inlet branch pipes 1211d are the same, which is convenient for the charging inlet main pipe 1211c to evenly distribute the fluid to the charging inlet branch pipes 1211d connected thereto. Each charging inlet branch pipe 1211d is connected to the first branch pipe 1211b, ensuring that the fluid can be evenly distributed into each charging flow path 111, so that each charging flow path 111 can obtain an equal amount of fluid input, ensuring the uniformity of heat acquisition of each charging flow path 111, ensuring uniform heat distribution, reducing overheating in some areas, and thus effectively improving the energy storage efficiency of the phase change heat storage device 1000.

[0098] Please refer to Figures 4 to 5, the charging inlet main pipe 1211c extends along the first axis, each charging inlet branch pipe 1211d extends along the second axis direction, and the second axes of the multiple charging inlet branch pipes 1211d are all located in the first plane; wherein, the first axis is located in the first plane, or the first axis is located in a second plane intersecting the first plane. In the embodiments of the present application, the charging inlet main pipe 1211c and each charging inlet branch pipe 1211d include two layout modes.

[0099] In one embodiment, the first axis is located in the first plane, and the charging inlet main pipe 1211c and each charging inlet branch pipe 1211d are all located in the same plane. With such a setting, it is convenient for the processing and manufacturing of the charging inlet main pipe 1211c and the charging inlet branch pipes 1211d. Moreover, since each pipeline is located in the same plane, the flow path of the fluid from the charging inlet main pipe 1211c to the charging inlet branch pipes 1211d is clear, the pipeline layout is smooth, and it is easy to evenly distribute the fluid.

[0100] In another embodiment, the first axis is located in a second plane intersecting the first plane. In one case, the first axis is inclined relative to the second plane, and in another case, the first axis is perpendicular to the second plane. It can be understood that in the above two cases, the charging inlet main pipe 1211c and each charging inlet branch pipe 1211d are arranged in three-dimensional space, so as to reduce the problem of excessive size in a certain direction, and distribute the sizes of the charging inlet main pipe 1211c and each charging inlet branch pipe 1211d in different directions, so as to more flexibly utilize the space resources inside the phase change heat storage device 1000 and be applicable to the situation of limited internal space.

[0101] When the first axis is perpendicular to the second plane, the internal space of the phase change heat storage device 1000 can be utilized more compactly, so that the arrangement of the pipeline structure is reasonable. The reasonable geometric layout makes maintenance and repair more convenient and reduces the long-term operation cost.

[0102] Similarly, for the charging outlet 111b, the second connection pipeline 1221 further includes: a charging outlet main pipe 1221c, which is communicated with the second main pipe 1221a; and at least two charging outlet branch pipes 1221d, each charging outlet branch pipe 1221d is connected to the charging outlet main pipe 1221c, and the port at one end of each charging outlet branch pipe 1221d away from the charging outlet main pipe 1221c is communicated with the second branch pipe 1221b. It can be understood that when the fluid flows to the charging outlet main pipe 1221c, it is split from the charging outlet main pipe 1221c to at least two charging outlet branch pipes 1221d connected thereto. In the embodiment of the present application, the charging outlet main pipe 1221c and at least two charging outlet branch pipes 1221d are of an integral structure, the charging outlet main pipe 1221c and the second main pipe 1221a are correspondingly inserted, and the charging outlet branch pipe 1221d and the second branch pipe 1221b are correspondingly inserted.

[0103] Further, in some embodiments, the sizes of the respective charging outlet branch pipes 1221d are the same, which is convenient for the charging outlet main pipe 1221c to evenly distribute the fluid to the charging outlet branch pipes 1221d connected thereto. Each charging outlet branch pipe 1221d is communicated with the first branch pipe 1211b, ensuring that the fluid can be evenly distributed to each charging flow path 111, so that each charging flow path 111 can obtain an equal amount of fluid input, ensuring the uniformity of heat acquisition of each charging flow path 111, ensuring uniform heat distribution, reducing overheating in some areas, and thus effectively improving the energy storage efficiency of the phase change heat storage device 1000.

[0104] The charging outlet main pipeline 1222 extends along the third axis, each charging outlet branch pipe 1221d extends along the fourth axis direction, and the fourth axes of the multiple charging outlet branch pipes 1221d are all located in the third plane; wherein, the third axis is located in the third plane, or the third axis is located in the fourth plane intersecting with the third plane. In the embodiment of the present application, the charging outlet main pipe 1221c and each charging outlet branch pipe 1221d include two layout modes.

[0105] In one embodiment, the third axis is located in the third plane, and the charging outlet main pipe 1221c and the respective charging outlet branch pipes 1221d are all located in the same plane. With such a setting, it is convenient for the processing and manufacturing of the charging outlet main pipe 1221c and the charging outlet branch pipes 1221d, and since each pipeline is located in the same plane, the flow path of the fluid from the charging outlet main pipe 1221c to the charging outlet branch pipes 1221d is clear, the pipeline layout is smooth, and it is easy to evenly distribute the fluid.

[0106] In another embodiment, the third axis is located in a fourth plane intersecting the third plane. In one case, the third axis is inclined relative to the fourth plane, and in another case, the third axis is perpendicular to the fourth plane. It can be understood that in the above two cases, the main charging outlet pipe 1221c and each charging outlet branch pipe 1221d are arranged in three-dimensional space, so as to reduce the problem of excessive size in a certain direction, and distribute the sizes of the main charging outlet pipe 1221c and each charging outlet branch pipe 1221d in different directions, so as to more flexibly utilize the space resources in the phase change heat storage device 1000 and be applicable to the case of limited internal space.

[0107] When the third axis is perpendicular to the fourth plane, the internal space of the phase change heat storage device 1000 can be utilized more compactly, making the layout of the pipeline structure reasonable. The reasonable geometric layout makes subsequent maintenance and repair more convenient and reduces the long-term operation cost.

[0108] In addition, please refer to Figures 1 to 5 , the phase change heat storage device 1000 includes a plurality of phase change heat storage units 1. The charging inlet flow path 121 further includes a main charging inlet pipe 1213 and a charging inlet manifold 1212. There are a plurality of first connecting pipes 1211. The charging inlet manifold 1212 is communicated with the main charging inlet pipe 1213, and a plurality of first main pipes 1211a of the plurality of first connecting pipes 1211 are all communicated with the charging inlet manifold 1212; the charging outlet flow path 122 further includes a main charging outlet pipe 1222 and a charging outlet manifold 1223. There are a plurality of second connecting pipes 1221. The charging outlet manifold 1223 is communicated with the main charging outlet pipe 1222, and a plurality of second main pipes 1221a of the plurality of second connecting pipes 1221 are all communicated with the charging outlet manifold 1223. By setting up multi-level pipelines, it is ensured that the energy of the phase change heat storage device 1000 can be evenly distributed, and the stability and reliability of the entire phase change heat storage device 1000 are improved.

[0109] Specifically, the main charging inlet pipe 1213 in the present application is the main inlet for receiving external hot fluid in the phase change heat storage device 1000 and is usually located at the forefront of the system as the centralized inlet for all hot fluids. The charging inlet manifold 1212 is an intermediate link. The charging inlet manifold 1212 is used to evenly distribute the hot fluid from the main charging inlet pipe 1213 to a plurality of first connecting pipes 1211, that is, the charging inlet manifold 1212 is used to connect a plurality of first main pipes 1211a.

[0110] Correspondingly, the charging outlet main pipe 1222 is the main outlet of the fluid after heat transfer in the phase change heat storage device 1000. As a centralized outlet for collecting the fluids in each pipeline, the charging outlet manifold 1223 is an intermediate link. The charging outlet manifold 1223 is used to evenly distribute the hot fluid from the charging outlet main pipe 1222 to multiple second connecting pipelines 1221, that is, the charging outlet manifold is used to connect multiple second main pipes 1221a.

[0111] In summary, through the charging inlet manifold 1212 and the charging outlet manifold 1223, the hot fluid can be evenly distributed to each phase change heat storage unit 1, and after sufficient heat exchange, it is collected and flows out to ensure that each phase change heat storage unit 1 can receive as equal heat input as possible, thereby realizing the efficient distribution of energy and ensuring the overall energy exchange efficiency of the phase change heat storage device 1000.

[0112] Please refer to Figure 1 and Figure 2 , the phase change heat storage unit 1 has a first end 1a and a second end 1b opposite to each other in the first direction X. The charging inlet 111a is located at the first end 1a, and the charging outlet 111b is located at the second end 1b. The charging inlet main pipe 1213, the charging inlet manifold 1212, the charging outlet main pipe 1222, and the charging outlet manifold 1223 are located on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a.

[0113] In an embodiment of the present application, the main pipeline components 12 such as the charging inlet main pipe 1213, the charging inlet manifold 1212, the charging outlet main pipe 1222, and the charging outlet manifold 1223 are all located on the same side of the heat exchanger 11 and close to the first end 1a where the charging inlet 111a is located. This can save space and make the pipeline layout more compact.

[0114] Correspondingly, the first main pipe 1211a includes a first charging inlet pipe section 1211a' and a second charging inlet pipe section 1211a" that are connected and communicate with each other. The first charging inlet pipe sections 1211a' of multiple first main pipes 1211a are all located on the same side of the heat exchanger 11 along the second direction Y, and the second charging inlet pipe sections 1211a" of multiple first main pipes 1211a are all located on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a.

[0115] It can be understood that the main pipeline components 12, such as the charging inlet manifold 1213, the charging inlet header 1212, the charging outlet manifold 1222, and the charging outlet header 1223, are all close to the first end 1a. The charging inlet 111a is located at the first end 1a and extends along the second direction Y. Therefore, in order to connect the charging inlet header 1212 and the charging inlet 111a, the first main pipe 1211a is provided with a first charging inlet pipe section 1211a' and a second charging inlet pipe section 1211a". The first charging inlet pipe section 1211a' extends along the first direction X and one end is close to the charging inlet 111a. The second charging inlet pipe section 1211a" extends along the second direction Y and connects the charging inlet header 1212 and the first charging inlet pipe section 1211a'. The first charging inlet pipe section 1211a' and the second charging inlet pipe section 1211a" extending in different directions can be used to adapt to the structure of the heat exchanger 11, and minimize the extension of the dimensions in a single direction, so as to ensure the compactness of the pipeline layout, reduce the occupied volume, and also facilitate the full utilization of the phase change material.

[0116] The second main pipe 1221a includes a connected first charging outlet pipe section 1221a' and a second charging outlet pipe section 1221a". The first charging outlet pipe sections 1221a' of multiple second main pipes 1221a are all on the same side of the heat exchanger 11 along the second direction Y. The second charging outlet pipe sections 1221a" of multiple second main pipes 1221a are all on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a. The second direction Y is perpendicular to the first direction X.

[0117] Similarly, the main pipeline components 12, such as the charging inlet manifold 1213, the charging inlet header 1212, the charging outlet manifold 1222, and the charging outlet header 1223, are all close to the first end 1a. The charging outlet 111b is located at the second end 1b and extends along the second direction Y. Therefore, in order to connect the charging outlet header 1223 and the charging outlet 111b, the second main pipe 1221a is provided with a first charging outlet pipe section 1221a' and a second charging outlet pipe section 1221a". The first charging outlet pipe section 1221a' extends along the first direction X and one end is close to the charging outlet 111b. The second charging outlet pipe section 1221a" extends along the second direction Y and connects the charging outlet header 1223 and the first charging outlet pipe section 1221a'. The first charging outlet pipe section 1221a' and the second charging outlet pipe section 1221a" extending in different directions can be used to adapt to the structure of the heat exchanger 11, and minimize the extension of the dimensions in a single direction, so as to ensure the compactness of the pipeline layout, reduce the occupied volume, and also facilitate the full utilization of the phase change material.

[0118] In addition, in some other embodiments, such as Figures 1 to 3 , andFigures 6 to 7 The energy-releasing flow path 112 has an energy-releasing inlet 112a and an energy-releasing outlet 112b. The pipeline assembly 12 further includes an energy-releasing inlet flow path 123 and an energy-releasing outlet flow path 124. The energy-releasing inlet flow path 123 includes a third connecting pipeline 1231. The third connecting pipeline 1231 includes a third main pipe 1231a and at least two third branch pipes 1231b. The third main pipe 1231a communicates with each third branch pipe 1231b, and each third branch pipe 1231b communicates with the energy-releasing inlet 112a of each energy-releasing flow path 112. The energy-releasing outlet flow path 124 includes a fourth connecting pipe. The fourth connecting pipeline 1241 includes a fourth main pipe 1241a and at least two fourth branch pipes 1241b. The fourth main pipe 1241a communicates with each fourth branch pipe 1241b, and each fourth branch pipe 1241b communicates with the energy-releasing outlet 112b of each energy-releasing flow path 112. It can be understood that the structure of the energy-releasing flow path 112 is similar to that of the energy-charging flow path 111, so the energy-releasing flow path 112 has an effect similar to that of the energy-charging flow path 111.

[0119] Specifically, the energy-releasing flow path 112 is used to connect to external water. The third main pipe 1231a is the main pipeline in the energy-releasing inlet flow path 123, which is responsible for introducing external fluid into the phase change heat storage device 1000. The third branch pipe 1231b is a branch of the third main pipe 1231a, and each third branch pipe 1231b is connected to the energy-releasing inlet 112a of an energy-releasing flow path 112, thereby ensuring that the fluid can enter each energy-releasing flow path 112 evenly, so as to improve the uniformity and efficiency of energy release. Correspondingly, the fourth main pipe 1241a is the main pipeline in the energy-releasing outlet flow path 124, which is responsible for collecting the fluid coming out of each energy-releasing flow path 112. The fourth branch pipe 1241b is a pipeline connecting the energy-releasing outlet 112b of each energy-releasing flow path 112, and each fourth branch pipe 1241b is connected to the fourth main pipe 1241a, so that the fluid coming out of each energy-releasing flow path 112 can be effectively collected for further treatment or discharge. By setting the third main pipe 1231a and the fourth main pipe 1241a, the number of pipelines connecting the energy-releasing inlet flow path 123 and the energy-releasing outlet flow path 124 can be effectively reduced, so that the pipelines inside the phase change heat storage device 1000 will not be too dense, which is convenient for installing the corresponding pipeline structure, and can also reserve a certain space for subsequent leak detection and leak repair, which is convenient for subsequent maintenance.

[0120] In some embodiments, multiple phase change thermal storage units 1 are included, the energy release inlet flow path 123 further includes an energy release inlet main pipe 1232 and an energy release inlet collecting pipe 1233, there are multiple third connecting pipes 1231, the energy release inlet collecting pipe 1233 is connected to the energy release inlet main pipe 1232, and the multiple third main pipes 1231a of the multiple third connecting pipes 1231 are all connected to the energy release inlet collecting pipe 1233; the energy release outlet flow path 124 further includes an energy release outlet main pipe 1242 and an energy release outlet collecting pipe 1243, there are multiple fourth connecting pipes 1241, the energy release outlet collecting pipe 1243 is connected to the energy release outlet main pipe 1242, and the multiple fourth main pipes 1241a of the multiple fourth connecting pipes 1241 are all connected to the energy release outlet collecting pipe 1243.

[0121] Specifically, the energy release inlet main pipe 1232 is the main inlet of the energy release flow path 112, responsible for introducing external fluid into the phase change thermal storage device 1000, and the energy release inlet collecting pipe 1233 is responsible for evenly distributing the fluid from the energy release inlet main pipe 1232 to multiple third connecting pipes 1231. In an embodiment of the present application, the energy release inlet collecting pipe 1233 is connected to the energy release inlet main pipe 1232 and to the third main pipes 1231a of the multiple third connecting pipes 1231. The multiple third connecting pipes 1231 are responsible for distributing the fluid from the energy release inlet collecting pipe 1233 to the energy release inlets 112a of each energy release flow path 112, and the third main pipe 1231a of each third connecting pipe 1231 is connected to the energy release inlet collecting pipe 1233, and then the fluid is distributed to the energy release inlets 112a of each energy release flow path 112 through the third branch pipes 1231b.

[0122] For the energy release outlet flow path 124, the energy release outlet main pipe 1242 is the main outlet of the energy release flow path 112, responsible for collecting fluids from each energy release flow path 112 and discharging them out of the system. The energy release outlet manifold 1243 is responsible for collecting fluids from multiple fourth connecting pipelines 1241, and then transporting them to the energy release outlet main pipe 1242. The energy release outlet manifold 1243 is connected to the energy release outlet main pipe 1242 and to the fourth main pipes 1241a of the multiple fourth connecting pipelines 1241. The multiple fourth connecting pipelines 1241 are responsible for collecting fluids from each energy release flow path 112 into the energy release outlet manifold 1243. The fourth main pipe 1241a of each fourth connecting pipeline 1241 is connected to the energy release outlet manifold 1243, and then collects fluids from each energy release flow path 112 through the fourth branch pipes 1241b.

[0123] In the embodiments of the present application, an exothermic inlet main pipe 1232, an exothermic inlet manifold 1233, an exothermic outlet main pipe 1242, and an exothermic outlet manifold 1243 are provided to shunt and aggregate external fluid, further optimizing the uniformity of energy release in the phase change heat storage device 1000. This not only improves the reliability of the phase change heat storage device 1000, but also simplifies the maintenance work, provides support for flexible expansion, and enables the phase change heat storage device 1000 to be more efficient and stable in practical applications.

[0124] In some of these embodiments, the phase change heat storage unit 1 has a first end 1a and a second end 1b opposite to each other along the first direction X. The exothermic inlet 112a is located at the second end 1b, and the exothermic outlet 112b is located at the first end 1a. The exothermic inlet main pipe 1232, the exothermic inlet manifold 1233, the exothermic outlet main pipe 1242, and the exothermic outlet manifold 1243 are located on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a. The third main pipe 1231a includes a first exothermic inlet pipe segment 1231a' and a second exothermic inlet pipe segment 1231a" that are connected and communicate with each other. The first exothermic inlet pipe segments 1231a' of multiple third main pipes 1231a are all located on the same side of the heat exchanger 11 along the second direction Y, and the second exothermic inlet pipe segments 1231a" of multiple third main pipes 1231a are all located on the same side of the heat exchanger 11 along the first direction X and close to the second end 1b. The fourth main pipe 1241a includes a first exothermic outlet pipe segment 1241a' and a second exothermic outlet pipe segment 1241a" that are connected and communicate with each other. The first exothermic outlet pipe segments 1241a' of multiple fourth main pipes 1241a are all located on the same side of the heat exchanger 11 along the second direction Y, and the second exothermic outlet pipe segments 1241a" of multiple fourth main pipes 1241a are all located on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a. The second direction Y is perpendicular to the first direction X.

[0125] In an embodiment of the present application, the main pipeline components 12 such as the exothermic inlet main pipe 1232, the exothermic inlet manifold 1233, the exothermic outlet main pipe 1242, and the exothermic outlet manifold 1243 are all located on the same side of the heat exchanger 11 and close to the first end 1a where the exothermic inlet 112a is located. This can save space and make the pipeline layout more compact.

[0126] Correspondingly, the third main pipe 1231a includes a first exothermic inlet pipe segment 1231a' and a second exothermic inlet pipe segment 1231a" that are connected and communicate with each other. The first exothermic inlet pipe segments 1231a' of multiple third main pipes 1231a are all located on the same side of the heat exchanger 11 along the second direction Y, and the second exothermic inlet pipe segments 1231a" of multiple third main pipes 1231a are all located on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a.

[0127] It can be understood that the main pipeline components 12, such as the total energy release inlet pipe 1232, the energy release inlet manifold 1233, the total energy release outlet pipe 1242, and the energy release outlet manifold 1243, are all close to the first end 1a, while the energy release inlet 112a is located at the second end 1b and the energy release inlet 112a extends along the second direction Y. Therefore, in order to connect the energy release inlet manifold 1233 and the energy release inlet 112a, the third main pipe 1231a is provided with a first energy release inlet pipe section 1231a' and a second energy release inlet pipe section 1231a". The first energy release inlet pipe section 1231a' extends along the first direction X and one end is close to the energy release inlet 112a. The second energy release inlet pipe section 1231a" extends along the second direction Y and connects the energy release inlet manifold 1233 and the first energy release inlet pipe section 1231a'. The first energy release inlet pipe section 1231a' and the second energy release inlet pipe section 1231a" extending in different directions can be used to adapt to the structure of the heat exchanger 11, and can minimize the extension of the dimensions in a single direction, thereby ensuring the compactness of the pipeline layout, reducing the occupied volume, and facilitating the full utilization of the phase change material for energy release.

[0128] The fourth main pipe 1241a includes a connected first energy release outlet pipe section 1241a' and a second energy release outlet pipe section 1241a". The first energy release outlet pipe sections 1241a' of multiple fourth main pipes 1241a are all on the same side of the heat exchanger 11 along the second direction Y, and the second energy release outlet pipe sections 1241a" of multiple fourth main pipes 1241a are all on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a. The second direction Y is perpendicular to the first direction X.

[0129] Similarly, the main pipeline components 12, such as the total energy release inlet pipe 1232, the energy release inlet manifold 1233, the total energy release outlet pipe 1242, and the energy release outlet manifold 1243, are all close to the first end 1a. The energy release outlet 112b is located at the first end 1a and the energy release outlet 112b extends along the second direction Y. Therefore, in order to connect the energy release outlet manifold 1243 and the energy release outlet 112b, the second main pipe 1221a is provided with a first energy release outlet pipe section 1241a' and a second energy release outlet pipe section 1241a". The first energy release outlet pipe section 1241a' extends along the first direction X and one end is close to the energy release outlet 112b. The second energy release outlet pipe section 1241a" extends along the second direction Y and connects the energy release outlet manifold 1243 and the first energy release outlet pipe section 1241a'. The first energy release outlet pipe section 1241a' and the second energy release outlet pipe section 1241a" extending in different directions can be used to adapt to the structure of the heat exchanger 11, and can minimize the extension of the dimensions in a single direction, thereby ensuring the compactness of the pipeline layout, reducing the occupied volume, and facilitating the full utilization of the phase change material for energy release.

[0130] It can be understood that the phase change heat storage unit 1 has a first end 1a and a second end 1b opposite to each other along the first direction X. The charging inlet 111a is located at the first end 1a, and the charging outlet 111b is located at the second end 1b. The discharging flow path 112 has a discharging inlet 112a located at the second end 1b and a discharging outlet 112b located at the first end 1a. It can be understood that with such an arrangement, the flow direction of the fluid in the charging flow path 111 is opposite to that of the fluid in the discharging flow path 112. In the actual application process, the reverse flow helps to form a temperature gradient, enabling the heat energy to be more evenly distributed in the phase change material, avoiding local overheating or overcooling, improving the overall energy utilization rate of the phase change material, and thus significantly enhancing the energy exchange efficiency of the phase change heat storage device 1000, strengthening the reliability of the system, and optimizing the energy utilization. This design makes the phase change heat storage device 1000 more efficient and stable in actual applications.

[0131] In some of these embodiments, the charging flow path 111 includes a plurality of charging pipe segments 1111 distributed along its flow direction, and the plurality of charging pipe segments 1111 are spaced apart along the first direction X; the discharging flow path 112 includes a plurality of discharging pipe segments 1121 distributed along its flow direction, and the plurality of discharging pipe segments 1121 are spaced apart along the first direction X; wherein, along the first direction X, two adjacent charging pipe segments 1111 correspond to one discharging pipe segment 1121, and one charging pipe segment 1111 corresponds to the space between two adjacent discharging pipe segments 1121. In the embodiments of the present application, the external hot fluid enters the system from the charging inlet 111a, flows through the plurality of charging pipe segments 1111 in sequence, heats the phase change material, and then flows out from the charging outlet 111b. During this process, the hot fluid first enters the colder phase change material region, gradually heats the phase change material, and finally flows out of the system; the external cooling fluid enters the system from the discharging inlet 112a, flows through the plurality of discharging pipe segments 1121 in sequence, absorbs the heat released by the phase change material, and then flows out from the discharging outlet 112b. During this process, the external cooling fluid first enters the hotter phase change material region, gradually cools the phase change material, and finally flows out of the system. By staggering the distribution of the charging pipe segments 1111 and the discharging pipe segments 1121, it can be ensured that during the charging and discharging processes, the heat exchange between the hot fluid and the cooling fluid is more uniform and efficient, reducing the thermal stress. This facilitates the alternating flow of the hot fluid and the external cooling fluid in the phase change material, thereby improving the energy exchange efficiency.

[0132] Please refer to Figure 2, multiple charging pipe segments 1111 of each charging flow path 111 are all located in a charging installation surface, and multiple discharging pipe segments 1121 of each discharging flow path 112 are all located in a discharging installation surface, where the charging installation surface and the discharging installation surface are spaced apart along the third direction Z, and / or, along the third direction Z, a discharging installation surface is arranged between every two adjacent charging installation surfaces, and / or, along the third direction Z, a charging installation surface is arranged between every two adjacent discharging installation surfaces, and the third direction Z is perpendicular to the first direction X. In the embodiments of the present application, the charging pipe segments 1111 are spaced apart along the first direction X, and all the charging pipe segments 1111 are in the same plane, that is, in the charging installation surface, the discharging pipe segments 1121 are spaced apart along the first direction X, and all the discharging pipe segments 1121 are in the same plane, that is, in the discharging installation surface. By staggering the charging installation surface and the discharging installation surface, the distance between the charging pipe segments 1111 and the discharging pipe segments 1121 is ensured to be reasonable, and the heat transfer efficiency is consistent. Furthermore, during the charging and discharging processes, the heat exchange between the hot fluid and the external cooling fluid is made more uniform and efficient. This design enables the hot fluid and the cooling fluid to flow alternately in the phase change material, thereby improving the efficiency of energy exchange.

[0133] Furthermore, the charging pipe segments 1111 extend along the second direction Y, and the discharging pipe segments 1121 extend along the second direction Y, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other pairwise. Such a setting ensures that the charging pipe segments 1111 and the discharging pipe segments 1121 can ensure that the flow path of the fluid along the second direction Y in the phase change heat storage unit 1 is more uniform, thereby improving the heat transfer efficiency. During the process of flowing along the second direction Y, the fluid can contact the phase change material more uniformly, thereby improving the efficiency of energy exchange.

[0134] In addition, the charging flow path 111 further includes a charging connection pipe 1112 connected between two adjacent charging pipe segments 1111 along its flow direction, and two adjacent charging connection pipes 1112 are located on opposite sides of multiple charging pipe segments 1111 along the second direction Y; and / or, the discharging flow path 112 further includes a discharging connection pipe 1122 connected between two adjacent discharging pipe segments 1121 along its flow direction, and two adjacent discharging connection pipes 1122 are located on opposite sides of multiple discharging pipe segments 1121 along the second direction Y. It can be understood that the respective charging pipe segments 1111 and the respective discharging pipe segments 1121 are spaced apart along the first direction X, and each pipeline extends along the second direction Y. The charging connection pipe 1112 and the discharging connection pipe 1122 are respectively connected to adjacent charging pipe segments 1111 and discharging pipe segments 1121 to ensure the smoothness of the charging flow path 111 and the discharging flow path 112.

[0135] In some of these embodiments, the first connecting pipeline 1211 and the second connecting pipeline 1221 include any one of an aluminum pipe, an aluminum alloy pipe, a copper pipe, a copper alloy pipe, and a stainless steel pipe; and / or, the third connecting pipeline 1231 and the fourth connecting pipeline 1241 include any one of a copper pipe, a copper alloy pipe, and a stainless steel pipe; and / or, the energy charging flow path 111 and the energy discharging flow path 112 include any one of a copper pipe and a copper alloy pipe; and / or, the energy charging inlet main pipe 1213, the energy charging inlet manifold 1212, the energy charging outlet main pipe 1222, the energy charging outlet manifold 1223, the energy discharging inlet main pipe 1232, the energy discharging inlet manifold 1233, the energy discharging outlet main pipe 1242, and the energy discharging outlet manifold 1243 include stainless steel pipes. It can be understood that the first connecting pipeline 1211 and the second connecting pipeline 1221 are in communication with the hot fluid, and the hot fluid circulates inside the structure of the phase change heat storage device 1000 and does not contact the outside world. Therefore, aluminum pipes and aluminum alloy pipes with relatively light weight but poor corrosion resistance can be selected. The third connecting pipeline 1231 and the fourth connecting pipeline 1241 are generally in communication with external fluids. Therefore, copper pipes, copper alloy pipes, or stainless steel pipes with stronger corrosion resistance need to be selected to resist external corrosion. In this application, aluminum pipes, aluminum alloy pipes, copper pipes, copper alloy pipes, and stainless steel pipes all have good thermal conductivity. By reasonably selecting pipes of different materials, it can be ensured that the phase change heat storage device 1000 exhibits the best performance in different application scenarios. Which specific material of the pipe should be selected depends on actual requirements such as thermal conductivity, corrosion resistance, and mechanical strength. In this application, targeted materials are selected for different pipes, which not only improves the efficiency and reliability of the system but also reduces the maintenance cost, making the phase change heat storage device 1000 more efficient and stable in practical applications.

[0136] In some of these embodiments, the phase change heat storage device 1000 further includes a positioning assembly 2, and the positioning assembly 2 includes a fixing structure 21 that extends along the third direction Z and is fixedly connected to a plurality of phase change heat storage units 1.

[0137] Please refer to Figures 18 to 20 , the phase change heat storage device 1000 further includes a fixing structure 21 that extends along the third direction Z and is fixedly connected to a plurality of phase change heat storage units 1. In this application, the fixing structure 21 is used to connect and fix the main bodies of a plurality of heat exchangers 11 and maintain the gaps between the main bodies of a plurality of heat exchangers 11, so that the gaps between the main bodies of each heat exchanger 11 are appropriate, ensuring that the phase change material can flow smoothly between the main bodies of a plurality of heat exchangers 11. While improving the heat exchange efficiency, it also helps to prevent contact and vibration between the main bodies of the heat exchangers 11, thereby improving the stability and heat exchange efficiency of the heat exchangers 11.

[0138] In some of these embodiments, the fixing structure 21 includes: two top connectors 211, connected to the tops of the plurality of phase change heat storage units 1, with each top connector 211 disposed oppositely along the second direction Y; and two bottom connectors 212, connected to the bottoms of the plurality of phase change heat storage units 1, with each bottom connector 212 disposed oppositely along the second direction Y.

[0139] In some of these embodiments, the fixing structure 21 includes: two top connectors 211 and two bottom connectors 212. The top connectors 211 are connected to the tops of the plurality of phase change heat storage units 1, with each top connector 211 disposed oppositely along the second direction Y; the two bottom connectors 212 are connected to the bottoms of the plurality of phase change heat storage units 1, with each bottom connector 212 disposed oppositely along the second direction Y. It can be understood that the top of the phase change heat storage unit 1 is the end of the phase change heat storage unit 1 close to the top cover. Conversely, the bottom of the phase change heat storage unit 1 is the end of the phase change heat storage unit 1 close to the bottom cover. Among them, the two top connectors 211 and the two bottom connectors 212 are respectively used to maintain the gaps at the top and bottom of the phase change heat storage unit 1, prevent the phase change heat storage units 1 from contacting each other, and maintain an appropriate gap. By connecting to the tops of the plurality of phase change heat storage units 1, the top connectors 211 help to enhance the structural stability of the entire heat exchanger 11 assembly, reduce displacement caused by vibration or external forces. The same applies to the bottom connectors 212, and the bottom connectors 212 can provide additional support for the connection at the bottom of the phase change heat storage unit 1, ensuring the stability of the phase change heat storage unit 1 under gravity and other loads. It can be understood that the top connectors 211 and the bottom connectors 212 together enhance the structural integrity of the entire heat exchanger 11, enabling it to remain stable under various operating conditions.

[0140] Furthermore, please refer to Figure 18 and Figure 20 , the top connector 211 includes: a first connecting top plate 2111, including a main plate 2111a extending along the third direction Z and a plurality of mounting side plates 2111b extending along the first direction X and spaced apart along the third direction Z, with each mounting side plate 2111b connecting to the top of the phase change heat storage unit 1; a second connecting top plate 2112, the second connecting top plate 2112 extending along the first direction X, the second connecting top plate 2112 being connected to the main plate 2111a, and the second connecting top plate 2112 being provided with hoisting holes 2112a spaced apart along the third direction Z.

[0141] The first connecting top plate 2111 includes a main plate 2111a and mounting side plates 2111b. Among them, the main plate 2111a is connected to the tops of multiple phase change heat storage units 1, and the number of mounting side plates 2111b corresponds to that of the phase change heat storage units 1 and is connected to the opposite sides of each phase change heat storage unit 1 along the third direction Z. It can be understood that the main plate 2111a plays a role in fixing the tops of the respective phase change heat storage units 1, while the mounting side plates 2111b fix the sides, further ensuring the fixing and spacing effects of the top connector 211 and strengthening the structural strength of the phase change heat storage device 1000.

[0142] In addition, in the present application, the second connecting top plate 2112 extends away from the mounting side plate 2111b and is provided with hoisting holes 2112a, which is convenient for installation during the installation process of the phase change heat storage device 1000 by connecting to the hoisting holes 2112a. Further, the number of hoisting holes 2112a on the second connecting top plate 2112 can be multiple, thereby increasing the hoisting points and facilitating the stability during hoisting, ensuring the safety during the installation process of the phase change heat storage device 1000.

[0143] Please refer to Figure 10 , the phase change heat storage device 1000 further includes: a phase change heat storage material 200; an inner tank 100 having an accommodation space, with multiple phase change heat storage units 1 and the phase change heat storage material 200 located in the accommodation space; and a housing 300 sleeved outside the inner tank 100. The phase change heat storage material 200 can undergo a phase change within a certain temperature range, absorbing or releasing a large amount of heat, thereby achieving efficient energy storage and release. The phase change heat storage material 200 is located in the accommodation space of the inner tank 100 and is connected to the charging and discharging flow path 112 through the phase change heat storage unit 1. The inner tank 100 has an accommodation space for accommodating the phase change heat storage material 200 and the phase change heat storage unit 1. In some embodiments, the inner tank 100 is made of high-temperature and corrosion-resistant materials, providing a closed working environment to protect the phase change heat storage material 200 from the external environment and ensuring its safe and stable operation under high or low temperature conditions. The housing 300 is sleeved outside the inner tank 100 and is made of materials with good heat insulation performance, further protecting the inner tank 100 and its internal components from the external environment, while providing an additional heat insulation layer to reduce energy loss and improve the overall efficiency of the system.

[0144] Please refer to Figures 8 to 13, the phase change heat storage device 1000 further includes a positioning assembly 2. The positioning assembly 2 includes a limiting assembly. The phase change heat storage unit 1 has a first end 1a and a second end 1b opposite to each other along the first direction X. The limiting assembly is installed at the second end 1b of the phase change heat storage unit 1. It can be understood that during installation, generally, the assembly is carried out along the second end 1b of the phase change heat storage unit 1. The limiting assembly is arranged at the second end 1b of the phase change heat storage unit 1, which can prevent the collision between the phase change heat storage unit 1 and other components, thus playing a protective role in all directions of the phase change heat storage unit 1.

[0145] Furthermore, the limiting assembly includes two limiting members 22 arranged opposite to each other along the second direction Y. At least a part of each limiting member 22 protrudes along the second direction Y from the phase change heat storage unit 1. The first direction X is perpendicular to the second direction Y. To further ensure the limiting effect, a part of each limiting member 22 protrudes along the second direction Y from the phase change heat storage unit 1, so as to space the pipeline assembly 12 and the inner tank 100 in the second direction Y, reducing the collision between the pipeline assembly 12 and the inner tank 100 in the second direction Y and playing a protective role for the phase change heat storage unit 1.

[0146] In addition, the limiting assembly keeps the gap between the pipeline assembly 12 and the inner tank 100 within a certain safe range. Even if there are unstable vibrations during installation or transportation, only the limiting member 22 collides with the inner tank 100, and the pipeline assembly 12 will not be collided, thus playing a role in protecting the pipeline assembly 12.

[0147] Please refer to Figures 8 to 13 , the limiting member 22 includes a limiting plate 221 and a connecting plate 222. The limiting plate 221 protrudes along the second direction Y from the pipeline structure. The limiting plate 221 is arranged opposite to and spaced from the phase change heat storage unit 1 along the second direction Y. The connecting plate 222 connects the limiting plate 221 and the phase change heat storage unit 1. Specifically, the limiting plate 221 is the part of the limiting member 22 that protrudes along the second direction Y from the pipeline structure, and the limiting plate 221 is spaced from the phase change heat storage unit 1, that is, there is a certain gap between the limiting plate 221 and the phase change heat storage unit 1. Therefore, the limiting plate 221 can play a role in isolating the pipeline structure and the housing. The relative arrangement between the limiting plate 221 and the phase change heat storage unit 1 indicates that at least part of the heat exchange plate and the phase change heat storage unit 1 are arranged in parallel, so as to ensure that when the limiting plate 221 is displaced due to a certain collision, it will not easily shift to the position of the phase change heat storage unit 1, thus playing a better protective role. The connecting plate 222 is used to connect with the phase change heat storage unit 1, thus playing a role in fixing the limiting plate 221.

[0148] In some of these embodiments, the connection plate 222 includes: a connection bottom plate 2221, which is connected to one end of the connection limit plate 221 near the second end 1b and extends towards the phase change heat storage unit 1; a connection side plate 2222, which is connected to the end of the connection bottom plate 2221 away from the limit plate 221 and extends away from the second end 1b, and the connection side plate 2222 is connected to the phase change heat storage unit 1. It can be understood that the connection bottom plate 2221 has an extension distance along the second direction Y, which can be used to space the limit plate 221 and the connection side plate 2222, and the connection side plate 2222 extends along the direction from the second end 1b towards the first end 1a and is connected to the phase change heat storage unit 1, thereby realizing the connection between the limiting member 22 and the phase change heat storage unit 1. With such a setting, the structure of the connecting member is simple and easy to install and maintain.

[0149] Further, a connection hole 2222a extending along the second direction Y is provided on the connection side plate 2222, and the connection side plate 2222 and the phase change heat storage unit 1 are connected by a locking member passing through the connection hole 2222a; an avoidance hole 221a corresponding to the connection hole 2222a is provided on the limit plate 221. A connection hole 2222a extending along the second direction Y is provided on the connection side plate 2222, and the connection side plate 2222 and the phase change heat storage unit 1 are connected by a locking member passing through the connection hole 2222a, and an avoidance hole 221a corresponding to the connection hole 2222a is provided on the limit plate 221. For the convenience of the installation of the limiting member 22 and the stability of its assembly, the locking member includes bolts, screws, etc. The connection hole 2222a extends along the second direction Y, and the limit plate 221 is correspondingly provided with an avoidance hole 221a extending along the second direction Y. When actually assembling the limiting member 22, the installation tool can extend from the avoidance hole 221a to the connection hole 2222a to install or disassemble the locking member. With such a setting, the installation and disassembly of the locking member can be realized from the side, enabling the installation tool to avoid the pipeline assembly 12 for installation, improving the loading and unloading speed while ensuring that the pipeline assembly 12 will not collide with the installation tool, and achieving the effect of protecting the pipeline assembly 12.

[0150] In some embodiments, the limiting member 22 further includes a transition plate 223, which connects the limit plate 221 and the connection plate 222, and the transition plate 223 is arranged at an obtuse angle with respect to both the limit plate 221 and the connection plate 222. It can be understood that the transition plate 223 is connected to the connection plate 222 at a certain obtuse angle, and the transition plate 223 extends along the direction towards the inner tank 100, thereby further increasing the distance between the limit plate 221 and the pipeline assembly 12 and reducing the probability of collision between the limit plate 221 and the pipeline assembly 12. The transition plate 223 and the limit plate 221 are connected at an obtuse angle, which ensures that the limit plate 221 will not tilt in the direction towards the pipeline assembly 12.

[0151] Further, the sum of the angles of two obtuse angles should be greater than 70 degrees to ensure that the limiting plate 221 does not tilt in the direction close to the pipeline assembly 12, guarantee the distance between the limiting plate 221 and the pipeline assembly 12, and reduce the probability of collision between the limiting plate 221 and the pipeline assembly 12.

[0152] Please refer to Figures 14 to 17 , in some embodiments, the phase change heat storage device 1000 includes a positioning assembly 2, the positioning assembly 2 further includes a mounting structure 23, the phase change heat storage device 1000 has a first end 1a and a second end 1b opposite to each other in the first direction X, the mounting structure 23 is close to the first end 1a of the phase change heat storage unit 1 and connects the phase change heat storage unit 1 and the inner tank 100. The mounting structure 23 is located on one side of the phase change heat storage device 1000 close to the first end 1a, which is convenient for installation from the first end 1a, and the mounting structure 23 located at the first end 1a can connect the inner tank 100 and the phase change heat storage unit 1 to fix the two, so as to cooperate with the limiting member 22 located at the bottom to limit the position of the phase change heat storage unit 1 in the inner tank 100 and prevent it from shaking during transportation or movement, playing a protective role for the phase change heat storage unit 1.

[0153] Please refer to Figure 14 To, 17, the mounting structure 23 includes: a first mounting member 231 mounted on the phase change heat storage unit 1, the first mounting member 231 includes a first mounting plate 2311, the first mounting plate 2311 is opposite to and spaced from the second end 1b of the phase change heat storage unit 1; a second mounting member 232 mounted on the inner wall of the inner tank 100, the second mounting member 232 includes a third mounting plate 2321, the third mounting plate 2321 is stacked with the first mounting plate 2311, and the third mounting plate 2321 is connected to the first mounting plate 2311.

[0154] In an embodiment of the present application, the first mounting member 231 at least includes a first mounting plate 2311. Herein, the first mounting plate 2311 faces the second end 1b. Since the first end 1a and the second end 1b are opposite to each other, that is, the first mounting plate 2311 and the first end 1a are opposite to each other, the plate surface of the first mounting plate 2311 is arranged facing the first end 1a. Correspondingly, the third mounting plate 2321 of the second mounting member 232 is arranged in a stacked manner with the first mounting plate 2311 and the two are fixedly connected. With such an arrangement, on the one hand, it is convenient to directly perform fixed assembly on the first mounting plate 2311 and the third mounting plate 2321 facing the first end 1a from the first end 1a, the operation is simple, and the installation efficiency is improved. On the other hand, the first mounting member 231 is connected to the phase change heat storage unit 1, the second mounting member 232 is connected to the inner tank 100, and the first mounting member 231 and the second mounting member 232 are cooperatively installed, thereby ensuring that the phase change heat storage unit 1 can be fixedly assembled with the inner tank 100, fixing the position of the phase change heat storage device 1000 in the inner tank 100 from the first end 1a, and ensuring a strong constraint relationship between the two.

[0155] In addition, the mounting structure 23 includes: a first mounting member 231, including a first mounting plate 2311 and a second mounting plate 2312 connected to the first mounting plate 2311. The first mounting plate 2311 is connected to the inner tank 100, the second mounting plate 2312 is connected to the phase change heat storage unit 1, and at least one of the first mounting plate 2311 and the second mounting plate 2312 is provided with a through hole 2313 for a partial structure of the pipeline assembly 12 to pass through. Specifically, the first mounting member 231 includes a first mounting plate 2311 and a second mounting plate 2312 connected to the first mounting plate 2311. The first mounting plate 2311 is connected to the inner tank 100, the second mounting plate 2312 is connected to the phase change heat storage unit 1, and at least one of the first mounting plate 2311 and the second mounting plate 2312 is provided with a through hole 2313 for the manifold of the phase change heat storage device 1000 to pass through. At this time, the first mounting plate 2311 may include a portion (corresponding to the horizontal plate) opposite to and spaced from the second end 1b, and a portion (corresponding to the vertical plate) arranged in a stacked manner with the second mounting plate 2312. Among them, the vertical plate may be provided with a through hole 2313 for the manifold of the phase change heat storage device 1000 to pass through.

[0156] Furthermore, a sealing ring 2314 is provided between a partial structure of the pipeline assembly 12 and the inner wall surface of the through hole 2313. The sealing ring 2314 is located between the first mounting member 231 and the manifold, and can effectively reduce the friction of the first mounting member 231 on the manifold. During actual transportation, it is inevitable to have some collisions and vibrations. The sealing ring 2314 can absorb these collisions and vibrations and has a protective effect on the manifold.

[0157] In some of these embodiments, the phase change heat storage device 1000 includes two mounting structures 23, which are respectively arranged corresponding to both sides of the phase change heat storage unit 1 in the third direction Z, and are used to connect both sides of the phase change heat storage unit 1 in the third direction Z to the inner tank 100 respectively. The two mounting structures 23 are respectively arranged corresponding to both sides of the phase change heat storage device 1000 in the third direction Z, and connect both sides of the phase change heat storage unit 1 in the third direction Z to the inner tank 100 respectively. Oppositely arranged in the third direction Z with respect to the two mounting structures 23, each mounting structure 23 is used to correspond to both sides of each phase change heat storage unit 1 in the third direction Z, so as to increase the mounting and fixing points of the phase change heat storage unit 1 in the third direction Z, and fix the phase change heat storage unit 1 on both sides in the third direction Z, so as to achieve a better locking effect on the phase change heat storage device 1000, and can effectively reduce the problem of damage to the phase change heat storage device 1000 caused by vibration and collision during transportation and installation.

[0158] Further, please refer to Figure 22 and 24 , the phase change heat storage device 1000 further includes a heat insulation layer 400. The heat insulation layer 400 is located between the inner tank 100 and the outer shell 300. The heat insulation layer 400 includes a first heat insulation layer 410 and a second heat insulation layer 420. The first heat insulation layer 410 is closer to the inner tank 100 than the second heat insulation layer 420, and the hardness of the first heat insulation layer 410 is lower than that of the second heat insulation layer 420. It should be noted that the heat insulation layer 400 is used to reduce the heat dissipation from the inner tank 100 to the outside and improve the energy utilization efficiency.

[0159] In some of these embodiments, the first heat insulation layer 410 includes at least one of a sponge layer and a rubber layer; and / or, the second heat insulation layer 420 includes at least one of a vacuum insulation panel and a polyurethane panel. The first heat insulation layer 410 adopts a sponge layer or a rubber layer. These materials are soft and have a certain elasticity, which helps to adapt to the shape and slight displacement of the inner tank 100 and plays a protective effect on the inner tank 100. The second heat insulation layer 420 adopts a vacuum insulation panel or a polyurethane panel. These materials have good heat insulation performance and high hardness, and can provide better structural stability and durability.

[0160] Please refer to Figure 22 and 23, the housing 300 further includes outer side plates 310, an outer top plate 320, and an outer bottom plate 330. Among them, a plurality of pipe passing openings 311 and wire passing openings 312 are correspondingly provided at the outer side plates 310. The pipe passing openings 311 are used for a plurality of main pipes to pass through, and the wire passing openings 312 are used for the wires inside the heat exchanger 11 to pass through, and can play a certain role in arranging the wires. In addition, a hem is provided at the edge of the outer side plate 310. In the embodiments of the present application, the number of the outer side plates 310 is multiple, and the hems of the respective outer side plates 310 are connected in sequence. The housing 300 is further provided with outer support feet 340, and the outer support feet 340 are connected to the outer bottom plate 330 and are used to support the outer bottom plate 330.

[0161] In addition, the phase change heat storage unit 1 further includes a fin group. The fin group includes a plurality of sheet-like fins. The fins have openings for pipes to pass through; among them, the fins include aluminum sheets. The fin group includes a plurality of sheet-like fins. The fins have openings for pipes to pass through; among them, the fins include aluminum sheets. It can be understood that the fins increase the surface area of the phase change heat storage unit 1, which helps to improve the heat exchange efficiency. By increasing the number and surface area of the fins, the thermal resistance can be reduced, making it easier for heat to transfer from the phase change heat storage material 200 to the external environment. And the aluminum sheet has good thermal conductivity, which helps to accelerate the heat transfer. With such a setting, the phase change heat storage device 1000 can not only effectively store and release heat, but also reduce heat loss and improve the energy utilization efficiency. The fin group can further improve the heat exchange efficiency.

[0162] In a second aspect, the application embodiments provide a heating and ventilation system. The heating and ventilation system includes the above-mentioned phase change heat storage device 1000. The specific structure of the phase change heat storage device 1000 refers to the above embodiments. Since the heating and ventilation system adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, axial, radial, circumferential, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0163] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0164] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0165] In the present utility model, unless otherwise clearly specified and defined, the first feature being on or under the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being above, over, and on top of the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being under, below, and beneath the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0166] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0167] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A phase change heat storage device (1000), characterized in that, including at least one phase change heat storage unit (1), and the phase change heat storage unit (1) includes: a heat exchanger (11), the heat exchanger (11) including at least two charging flow paths (111) and at least two discharging flow paths (112), the charging flow paths (111) having a charging inlet (111a) and a charging outlet (111b); a pipeline assembly (12), the pipeline assembly (12) including a charging inlet flow path (121) and a charging outlet flow path (122), the charging inlet flow path (121) including a first connecting pipeline (1211), the first connecting pipeline (1211) including a first main pipe (1211a) and at least two first branch pipes (1211b), the first main pipe (1211a) communicating with each of the first branch pipes (1211b), each of the first branch pipes (1211b) communicating with the charging inlet (111a) of each of the charging flow paths (111), the charging outlet flow path (122) including a second connecting pipeline (1221), the second connecting pipeline (1221) including a second main pipe (1221a) and at least two second branch pipes (1221b), the second main pipe (1221a) communicating with each of the second branch pipes (1221b), each of the second branch pipes (1221b) communicating with the charging outlet (111b) of each of the charging flow paths (111).

2. The phase change heat storage device (1000) according to claim 1, characterized in that, The first connecting pipeline (1211) further includes: a charging inlet main pipe (1211c), the charging inlet main pipe (1211c) communicating with the first main pipe (1211a); and, at least two charging inlet branch pipes (1211d), each of the charging inlet branch pipes (1211d) connecting to the charging inlet main pipe (1211c), and the port at the end of each of the charging inlet branch pipes (1211d) away from the charging inlet main pipe (1211c) communicating with the first branch pipe (1211b).

3. The phase change heat storage device (1000) according to claim 2, characterized in that, The charging inlet main pipe (1211c) extends along a first axis, each of the charging inlet branch pipes (1211d) extends along a second axis direction, and the second axes of the plurality of charging inlet branch pipes (1211d) are all located in a first plane; wherein, the first axis is located in the first plane, or the first axis is located in a second plane intersecting with the first plane.

4. The phase change heat storage device (1000) according to claim 1, characterized in that, The second connecting pipeline (1221) further includes: a charging outlet main pipe (1221c), the charging outlet main pipe (1221c) communicating with the second main pipe (1221a); and, at least two charging outlet branch pipes (1221d), each of the charging outlet branch pipes (1221d) connecting to the charging outlet main pipe (1221c), and the port at the end of each of the charging outlet branch pipes (1221d) away from the charging outlet main pipe (1221c) communicating with the second branch pipe (1221b).

5. The phase change heat storage device (1000) according to claim 4, wherein The charging outlet main pipe (1221c) extends along a third axis, and each charging outlet branch pipe (1221d) extends along a fourth axis direction, and the fourth axes of the plurality of charging outlet branch pipes (1221d) are all located in a third plane; Wherein, the third axis is located in the third plane, or the third axis is located in a fourth plane intersecting with the third plane.

6. The phase change heat storage device (1000) according to claim 1, characterized in that, It includes a plurality of phase change heat storage units (1), The charging inlet flow path (121) further includes a charging inlet main pipe (1213) and a charging inlet manifold (1212), there are a plurality of the first connection pipelines (1211), the charging inlet manifold (1212) is communicated with the charging inlet main pipe (1213), and the plurality of first main pipes (1211a) of the plurality of first connection pipelines (1211) are all communicated with the charging inlet manifold (1212); The charging outlet flow path (122) further includes a charging outlet main pipe (1222) and a charging outlet manifold (1223), there are a plurality of the second connection pipelines (1221), the charging outlet manifold (1223) is communicated with the charging outlet main pipe (1222), and the plurality of second main pipes (1221a) of the plurality of second connection pipelines (1221) are all communicated with the charging outlet manifold (1223).

7. The phase change heat storage device (1000) according to claim 6, characterized in that, The phase change heat storage unit (1) has a first end (1a) and a second end (1b) opposite to each other along a first direction (X), The charging inlet (111a) is located at the first end (1a), and the charging outlet (111b) is located at the second end (1b), The charging inlet main pipe (1213), the charging inlet manifold (1212), the charging outlet main pipe (1222), and the charging outlet manifold (1223) are located on the same side of the heat exchanger (11) along the first direction (X) and are close to the first end (1a); The first main pipe (1211a) includes a first charging inlet pipe section (1211a') and a second charging inlet pipe section (1211a") that are communicated with each other. The first charging inlet pipe sections (1211a') of the plurality of first main pipes (1211a) are all located on the same side of the heat exchanger (11) along a second direction (Y), and the second charging inlet pipe sections (1211a") of the plurality of first main pipes (1211a) are all located on the same side of the heat exchanger (11) along the first direction (X) and are close to the first end (1a); The second main pipe (1221a) includes a first energy charging outlet pipe section (1221a') and a second energy charging outlet pipe section (1221a") that are connected and communicate with each other. The first energy charging outlet pipe sections (1221a') of the plurality of second main pipes (1221a) are all located on the same side of the heat exchanger (11) along the second direction (Y). The second energy charging outlet pipe sections (1221a") of the plurality of second main pipes (1221a) are all located on the same side of the heat exchanger (11) along the first direction (X) and are close to the first end (1a). The second direction (Y) is perpendicular to the first direction (X).

8. The phase change heat storage device (1000) according to claim 1, characterized in that, The energy releasing flow path (112) has an energy releasing inlet (112a) and an energy releasing outlet (112b). The pipeline assembly (12) further includes an energy releasing inlet flow path (123) and an energy releasing outlet flow path (124). The energy releasing inlet flow path (123) includes a third connecting pipeline (1231). The third connecting pipeline (1231) includes a third main pipe (1231a) and at least two third branch pipes (1231b). The third main pipe (1231a) communicates with each of the third branch pipes (1231b). Each of the third branch pipes (1231b) communicates with the energy releasing inlet (112a) of each of the energy releasing flow paths (112). The energy releasing outlet flow path (124) includes a fourth connecting pipeline (1241). The fourth connecting pipeline (1241) includes a fourth main pipe (1241a) and at least two fourth branch pipes (1241b). The fourth main pipe (1241a) communicates with each of the fourth branch pipes (1241b). Each of the fourth branch pipes (1241b) communicates with the energy releasing outlet (112b) of each of the energy releasing flow paths (112).

9. The phase change heat storage device (1000) according to claim 8, characterized in that, including a plurality of phase change heat storage units (1). The energy releasing inlet flow path (123) further includes an energy releasing inlet main pipe (1232) and an energy releasing inlet manifold (1233). There are a plurality of the third connecting pipelines (1231). The energy releasing inlet manifold (1233) communicates with the energy releasing inlet main pipe (1232). The plurality of third main pipes (1231a) of the plurality of third connecting pipelines (1231) all communicate with the energy releasing inlet manifold (1233). The energy releasing outlet flow path (124) further includes an energy releasing outlet main pipe (1242) and an energy releasing outlet manifold (1243). There are a plurality of the fourth connecting pipelines (1241). The energy releasing outlet manifold (1243) communicates with the energy releasing outlet main pipe (1242). The plurality of fourth main pipes (1241a) of the plurality of fourth connecting pipelines (1241) all communicate with the energy releasing outlet manifold (1243).

10. The phase change heat storage device (1000) according to claim 9, characterized in that, The phase change heat storage unit (1) has a first end (1a) and a second end (1b) that are opposite to each other along the first direction (X). The energy releasing inlet (112a) is located at the second end (1b), and the energy releasing outlet (112b) is located at the first end (1a). The exothermic inlet main pipe (1232), the exothermic inlet manifold (1233), the exothermic outlet main pipe (1242), and the exothermic outlet manifold (1243) are located on the same side of the heat exchanger (11) along the first direction (X) and close to the first end (1a). The third main pipe (1231a) includes a first exothermic inlet pipe section (1231a') and a second exothermic inlet pipe section (1231a") that are connected and communicate with each other. The first exothermic inlet pipe sections (1231a') of the plurality of third main pipes (1231a) are all located on the same side of the heat exchanger (11) along the second direction (Y). The second exothermic inlet pipe sections (1231a") of the plurality of third main pipes (1231a) are all located on the same side of the heat exchanger (11) along the first direction (X) and close to the second end (1b). The fourth main pipe (1241a) includes a first exothermic outlet pipe section (1241a') and a second exothermic outlet pipe section (1241a") that are connected and communicate with each other. The first exothermic outlet pipe sections (1241a') of the plurality of fourth main pipes (1241a) are all located on the same side of the heat exchanger (11) along the second direction (Y). The second exothermic outlet pipe sections (1241a") of the plurality of fourth main pipes (1241a) are all located on the same side of the heat exchanger (11) along the first direction (X) and close to the first end (1a). The second direction (Y) is perpendicular to the first direction (X).

11. The phase change heat storage device (1000) according to claim 1, characterized in that, The phase change heat storage unit (1) has a first end (1a) and a second end (1b) that are opposite to each other along the first direction (X). The charging inlet (111a) is located at the first end (1a), and the charging outlet (111b) is located at the second end (1b). The exothermic flow path (112) has an exothermic inlet (112a) located at the second end (1b) and an exothermic outlet (112b) located at the first end (1a).

12. The phase change heat storage device (1000) according to claim 11, characterized in that, The charging flow path (111) includes a plurality of charging pipe sections (1111) distributed along its flow direction. The plurality of charging pipe sections (1111) are spaced apart along the first direction (X). The exothermic flow path (112) includes a plurality of exothermic pipe sections (1121) distributed along its flow direction. The plurality of exothermic pipe sections (1121) are spaced apart along the first direction (X). Wherein, along the first direction (X), two adjacent charging pipe sections (1111) correspond to one exothermic pipe section (1121), and one charging pipe section (1111) corresponds to the space between two adjacent exothermic pipe sections (1121).

13. The phase change heat storage device (1000) according to claim 12, characterized in that, The multiple charging pipe segments (1111) of each of the charging flow paths (111) are all located within a charging installation surface, and the multiple discharging pipe segments (1121) of each of the discharging flow paths (112) are all located within a discharging installation surface. Among them, the charging installation surface and the discharging installation surface are spaced apart along the third direction (Z), and / or, along the third direction (Z), one discharging installation surface is provided between every two adjacent charging installation surfaces, and / or, along the third direction (Z), one charging installation surface is provided between every two adjacent discharging installation surfaces. The third direction (Z) is perpendicular to the first direction (X).

14. The phase change heat storage device (1000) according to claim 13, wherein, The charging pipe segments (1111) extend along the second direction (Y), the discharging pipe segments (1121) extend along the second direction (Y), and the first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other in pairs.

15. The phase change heat storage device (1000) according to claim 14, characterized in that, The charging flow path (111) further includes charging connecting pipes (1112) connected between two adjacent charging pipe segments (1111) along its flow direction. Two adjacent charging connecting pipes (1112) are located on opposite sides of the multiple charging pipe segments (1111) along the second direction (Y); and / or, the discharging flow path (112) further includes discharging connecting pipes (1122) connected between two adjacent discharging pipe segments (1121) along its flow direction. Two adjacent discharging connecting pipes (1122) are located on opposite sides of the multiple discharging pipe segments (1121) along the second direction (Y).

16. The phase change heat storage device (1000) according to claim 9, characterized in that, The first connecting pipeline (1211) and the second connecting pipeline (1221) include any one of aluminum pipes, aluminum alloy pipes, copper pipes, copper alloy pipes, and stainless steel pipes; and / or, The third connecting pipeline (1231) and the fourth connecting pipeline (1241) include any one of copper pipes, copper alloy pipes, and stainless steel pipes; and / or, The charging flow path (111) and the discharging flow path (112) include any one of copper pipes and copper alloy pipes; and / or, The discharging inlet main pipe (1232), the discharging inlet manifold (1233), the discharging outlet main pipe (1242), and the discharging outlet manifold (1243) include stainless steel pipes.

17. The phase change heat storage device (1000) according to claim 6, wherein The charging inlet main pipe (1213), the charging inlet manifold (1212), the charging outlet main pipe (1222), and the charging outlet manifold (1223) include stainless steel pipes.

18. The phase change heat storage device (1000) according to claim 1, characterized in that, The phase change heat storage device (1000) further includes a positioning assembly (2). The positioning assembly (2) includes a fixing structure (21). The fixing structure (21) extends along the third direction (Z) and is fixedly connected to multiple phase change heat storage units (1).

19. The phase change heat storage device (1000) according to claim 18, characterized in that, The fixing structure (21) includes: Two top connectors (211) are connected to the tops of multiple phase change heat storage units (1), and the top connectors (211) are arranged opposite to each other along the second direction (Y); and, Two bottom connectors (212) are connected to the bottoms of a plurality of the phase change heat storage units (1), and the bottom connectors (212) are oppositely arranged along the second direction (Y).

20. The phase change heat storage device (1000) according to claim 19, wherein, The top connector (211) includes: A first connecting top plate (2111), including a main board (2111a) extending along the third direction (Z) and a plurality of mounting side plates (2111b) extending along the first direction (X) and spaced along the third direction (Z), and each of the mounting side plates (2111b) is connected to the top of the phase change heat storage unit (1); A second connecting top plate (2112), the second connecting top plate (2112) extends along the first direction (X), the second connecting top plate (2112) is connected to the main board (2111a), and the second connecting top plate (2112) is provided with hoisting holes (2112a) spaced along the third direction (Z).

21. The phase change heat storage device (1000) according to claim 1, characterized in that, The phase change heat storage device (1000) further includes: Phase change heat storage material (200); An inner container (100), the inner container (100) has an accommodating space, and a plurality of the phase change heat storage units (1) and the phase change heat storage material (200) are located in the accommodating space; and An outer shell (300), the outer shell (300) is sleeved outside the inner container (100).

22. The phase change heat storage device (1000) according to claim 21, characterized in that, The phase change heat storage device (1000) further includes a positioning assembly (2), the positioning assembly (2) further includes a limiting assembly, the phase change heat storage unit (1) has a first end (1a) and a second end (1b) opposite to each other along the first direction (X), and the limiting assembly is installed at the second end (1b) of the phase change heat storage unit (1).

23. The phase change heat storage device (1000) according to claim 22, wherein The limiting assembly includes two limiting members (22) oppositely arranged along the second direction (Y), and at least a part of each limiting member (22) protrudes along the second direction (Y) from the phase change heat storage unit (1), and the first direction (X) is perpendicular to the second direction (Y).

24. The phase change heat storage device (1000) according to claim 23, characterized in that, The limiting member (22) includes: A limiting plate (221), protruding from the phase change heat storage unit (1) along the second direction (Y), and the limiting plate (221) is opposite to and spaced from the phase change heat storage unit (1) along the second direction (Y); A connecting plate (222), connecting the limiting plate (221) and the phase change heat storage unit (1).

25. The phase change heat storage device (1000) according to claim 24, characterized in that, The connecting plate (222) includes: A connecting bottom plate (2221), connecting one end of the limiting plate (221) close to the second end (1b) and extending towards the phase change heat storage unit (1); A connecting side plate (2222), connecting one end of the connecting bottom plate (2221) away from the limiting plate (221) and extending away from the second end (1b), and the connecting side plate (2222) is connected to the phase change heat storage unit (1).

26. The phase change heat storage device (1000) according to claim 25, characterized in that, A connecting hole (2222a) extending along the second direction (Y) is provided on the connecting side plate (2222), and the connecting side plate (2222) and the phase change heat storage unit (1) are connected by a locking member passing through the connecting hole (2222a); An avoidance hole (221a) corresponding to the connection hole (2222a) is provided on the limit plate (221).

27. The phase change heat storage device (1000) according to claim 24, wherein The limiting member (22) further includes: A transition plate (223) connecting the limit plate (221) and the connection plate (222), and the transition plate (223) is arranged at an obtuse angle with respect to both the limit plate (221) and the connection plate (222).

28. The phase change heat storage device (1000) according to claim 21, wherein The phase change heat storage device (1000) further includes a positioning assembly (2), and the positioning assembly (2) further includes an installation structure (23). The phase change heat storage unit (1) has a first end (1a) and a second end (1b) opposite to each other in the first direction (X). The installation structure (23) is close to the first end (1a) of the phase change heat storage unit (1) and connects the phase change heat storage unit (1) and the inner tank (100).

29. The phase change heat storage device (1000) according to claim 28, characterized in that, The installation structure (23) includes: A first installation member (231) installed on the phase change heat storage unit (1). The first installation member (231) includes a first installation plate (2311), and the first installation plate (2311) is opposite to and spaced from the second end (1b) of the phase change heat storage unit (1). A second installation member (232) installed on the inner wall of the inner tank (100). The second installation member (232) includes a third installation plate (2321), and the third installation plate (2321) is stacked with the first installation plate (2311) and is connected to the first installation plate (2311).

30. The phase change heat storage device (1000) according to claim 29, characterized in that, The installation structure (23) includes: A first installation member (231) including a first installation plate (2311) and a second installation plate (2312) connecting the first installation plate (2311). The first installation plate (2311) is connected to the inner tank (100), and the second installation plate (2312) is connected to the phase change heat storage unit (1). At least one of the first installation plate (2311) and the second installation plate (2312) is provided with a through hole (2313) for a partial structure of the pipeline assembly (12) to pass through.

31. The phase change heat storage device (1000) according to claim 30, wherein A sealing ring (2314) is provided between a partial structure of the pipeline assembly (12) and the inner wall surface of the through hole (2313).

32. The phase change heat storage device (1000) according to claim 31, wherein The phase change heat storage device (1000) includes two of the installation structures (23), and the two installation structures (23) are respectively arranged corresponding to both sides of the phase change heat storage unit (1) in the third direction (Z) to connect both sides of the phase change heat storage unit (1) in the third direction (Z) to the inner tank (100) respectively.

33. The phase change heat storage device (1000) according to claim 31, wherein, The phase change heat storage device (1000) further includes a heat insulation layer (400), the heat insulation layer (400) is located between the inner container (100) and the outer shell (300), the heat insulation layer (400) includes a first heat insulation layer (410) and a second heat insulation layer (420), the first heat insulation layer (410) is closer to the inner container (100) than the second heat insulation layer (420), and the hardness of the first heat insulation layer (410) is lower than that of the second heat insulation layer (420).

34. The phase change heat storage device (1000) according to claim 33, characterized in that, The first heat insulation layer (410) includes at least one of a sponge layer and a rubber layer; And / or, the second heat insulation layer (420) includes at least one of a vacuum insulation panel and a polyurethane panel.

35. The phase change heat storage device (1000) according to claim 1, wherein The phase change heat storage unit (1) further includes a fin group, the fin group includes a plurality of sheet-shaped fins, and the fins have openings for pipes to pass through; Wherein, the fins include aluminum sheets.

36. A heating, ventilation and air conditioning (HVAC) system, characterized in that, Including the phase change heat storage device (1000) according to any one of claims 1 to 35.

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