Phase change heat storage device and heating and ventilation system

Abstract

The invention 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 direction of the heat exchange pipeline to be set in the same direction as the filling direction of the phase change material, the input pipe and the 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 be 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, and 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. Summary of the invention

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

[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 branch pipes, the first main pipe is connected to each first branch pipe, each first branch pipe is connected to the charging inlet of each charging flow path, the charging outlet flow path comprises a second connecting pipe, the second connecting pipeline comprises a second main pipe and at least two second branches, the second main pipe is connected to each second branch pipe, and each second branch pipe is connected to the charging outlet of each charging flow path.

[0006] In some embodiments, the first connecting pipeline also 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 embodiments, the charging inlet main pipe extends along a first axis, each charging inlet branch pipe extends along a second axis, and the second axes of multiple 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 embodiments, the second connecting pipeline also includes: a charging outlet main pipe, the charging outlet main pipe is connected to 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 a port at one end of each charging outlet branch pipe away from the charging outlet main pipe is connected to the second branch pipe.

[0009] In some embodiments, the charging outlet main pipe extends along the third axis, each charging outlet branch pipe extends along the fourth axis and the fourth axes of multiple charging outlet branch pipes are all located in the 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 the embodiments, multiple phase change heat storage units are included, the charging inlet flow path also includes a charging inlet main pipe and a charging inlet collecting pipe, there are multiple first connecting pipelines, the charging inlet collecting pipe is connected to the charging inlet main pipe, and multiple first main pipes of the multiple first connecting pipelines are all connected to the charging inlet collecting pipe; the charging outlet flow path also includes a charging outlet main pipe and a charging outlet collecting pipe, there are multiple second connecting pipelines, the charging outlet collecting pipe is connected to the charging outlet main pipe, and multiple second main pipes of the multiple second connecting pipelines are all connected to the charging outlet collecting pipe.

[0011] In some 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 collecting pipe, the charging outlet main pipe, and the charging outlet collecting pipe are located on the same side of the heat exchanger and close to the first end along the first direction; the first main pipe includes a first charging inlet pipe section and a second charging inlet pipe section that are connected, and the first charging inlet pipe sections of multiple first main pipes are all located on the same side of the heat exchanger along the second direction, and the second charging inlet pipe sections of multiple 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 connected, and the first charging outlet pipe sections of multiple 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 multiple 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 embodiments, the energy release flow path has an energy release inlet and an energy release outlet, the pipeline assembly also includes an energy release inlet flow path and an energy release outlet flow path, the energy release inlet flow path includes a third connecting pipeline, the third connecting pipeline includes a third main pipe and at least two third branch pipes, the third main pipe is connected to each third branch pipe, each third branch pipe is connected to the energy release inlet of each energy release flow path, the energy release outlet flow path includes a fourth connecting pipe, the fourth connecting pipeline includes a fourth main pipe and at least two fourth branch pipes, the fourth main pipe is connected to each fourth branch pipe, and each fourth branch pipe is connected to the energy release outlet of each energy release flow path.

[0013] In some of the embodiments, multiple phase change heat storage units are included, the energy release inlet flow path also includes an energy release inlet main pipe and an energy release inlet collecting pipe, there are multiple third connecting pipelines, the energy release inlet collecting pipe is connected to the energy release inlet main pipe, and multiple third main pipes of the multiple third connecting pipelines are all connected to the energy release inlet collecting pipe; the energy release outlet flow path also includes an energy release outlet main pipe and an energy release outlet collecting pipe, there are multiple fourth connecting pipelines, the energy release outlet collecting pipe is connected to the energy release outlet main pipe, and multiple fourth main pipes of the multiple fourth connecting pipelines are all connected to the energy release outlet collecting pipe.

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

[0015] In some embodiments, the phase change thermal 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 discharge flow path has a discharge inlet located at the second end and a discharge outlet located at the first end.

[0016] In some embodiments, the charging flow path includes a plurality of charging pipe segments distributed along its flow direction, and the plurality of charging pipe segments are distributed at intervals along a first direction; the discharging flow path includes a plurality of discharging pipe segments distributed along its flow direction, and the plurality of discharging pipe segments are distributed at intervals along the first direction; wherein, along the first direction, two adjacent charging pipe segments correspond to one discharging pipe segment, and there is one charging pipe segment between two adjacent discharging pipe segments.

[0017] In some embodiments, multiple charging tube segments of each charging flow path are located in a charging installation surface, and multiple energy discharging tube segments of each energy discharging flow path are located in an energy discharging installation surface, wherein the charging installation surface and the energy discharging installation surface are spaced apart along a third direction, and / or, along the third direction, an energy discharging installation surface is arranged between every two adjacent charging installation surfaces, and / or, along the third direction, an energy discharging installation surface is arranged between every two adjacent energy discharging installation surfaces, and the third direction is perpendicular to the first direction.

[0018] In some embodiments, the charging tube segment extends along the second direction, the discharging tube segment extends along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0019] In some embodiments, the charging flow path further includes a charging connecting tube connected between two adjacent charging tube segments along its flow direction, and the two adjacent charging connecting tubes are located on opposite sides of the multiple charging tube segments along the second direction; and / or, the discharging flow path further includes an energy releasing connecting tube connected between two adjacent energy releasing tube segments along its flow direction, and the two adjacent energy releasing connecting tubes are located on opposite sides of the multiple energy releasing tube segments along the second direction.

[0020] In some embodiments, the first connecting pipeline and the second connecting pipeline include any one of aluminum tubes, aluminum alloy tubes, copper tubes, copper alloy tubes and stainless steel tubes; and / or, the third connecting pipeline and the fourth connecting pipeline include any one of copper tubes, copper alloy tubes and stainless steel tubes; and / or, the charging flow path and the discharging flow path include any one of copper tubes and copper alloy tubes; and / or, the charging inlet main pipe, the charging inlet collecting pipe, the charging outlet main pipe, the charging outlet collecting pipe, the discharging inlet main pipe, the discharging inlet collecting pipe, the discharging outlet main pipe and the discharging outlet collecting pipe include stainless steel tubes.

[0021] In some of the embodiments, the phase change thermal storage device further includes a positioning assembly, the positioning assembly further includes a fixing structure, the fixing structure extends along a third direction and is fixedly connected to the plurality of phase change thermal storage units.

[0022] In some of the embodiments, the fixing structure includes: two top connecting members connected to the tops of the plurality of phase change thermal storage units, each top connecting member being arranged opposite to each other along the second direction; and two bottom connecting members connected to the bottoms of the plurality of phase change thermal storage units, each bottom connecting member being arranged opposite to each other along the second direction.

[0023] In some embodiments, the top connecting member includes: a first connecting plate, including a main board extending along a third direction and a plurality of mounting plates extending along the first direction and arranged at intervals along the third direction, each mounting plate being connected to the top of the phase change thermal storage unit; a second connecting plate, the second connecting plate extending along the first direction, the second connecting plate being connected to the main board, and the second connecting plate having lifting holes arranged at intervals along the third direction.

[0024] In some of the embodiments, the phase change heat storage device further includes: a phase change heat storage material; an inner liner having a containing space, wherein a plurality of phase change heat storage units and the phase change heat storage material are located in the containing space; and an outer shell, which is sleeved outside the inner liner.

[0025] In some embodiments, the phase change thermal storage device further includes a positioning assembly, the positioning assembly further includes a limiting assembly, the phase change thermal storage unit has a first end and a second end opposite to each other along a first direction, and the limiting assembly is installed at the second end of the phase change thermal storage unit.

[0026] In some embodiments, the limiting assembly includes two limiting members arranged opposite to each other along the second direction, at least a portion of each limiting member protrudes from the phase change thermal storage unit along the second direction, and the first direction is perpendicular to the second direction.

[0027] In some embodiments, the limiting member includes: a limiting plate protruding from the phase change heat storage unit along the second direction, the limiting plate being opposite to and spaced apart from the phase change heat storage unit along the second direction; and a connecting plate connecting the limiting plate and the phase change heat storage unit.

[0028] In some embodiments, the connecting plate includes: a connecting bottom plate, connected to an end of the limiting plate close to the second end and extending in a direction close to the phase change thermal storage unit; a connecting side plate, connected to an end of the connecting bottom plate away from the limiting plate and extending in a direction away from the second end, and the connecting side plate is connected to the phase change thermal storage unit.

[0029] In some embodiments, a connecting hole extending along the second direction is provided on the connecting side plate, and the connecting side plate and the phase change heat storage unit are connected via a locking piece passing through the connecting hole; an avoidance hole corresponding to the connecting hole is provided on the limiting plate.

[0030] In some embodiments, the limiting member further includes: a transition plate, connecting the limiting plate and the connecting plate, and the transition plate is arranged at an obtuse angle relative to the limiting plate and the connecting plate.

[0031] In some embodiments, the phase change thermal storage device further includes a positioning assembly, the positioning assembly further includes a mounting structure, the phase change thermal storage unit has a first end and a second end opposite to each other along a first direction, the mounting structure is close to the first end of the phase change thermal storage unit and connects the phase change thermal storage unit and the inner tank.

[0032] In some embodiments, the mounting structure includes: a first mounting member, mounted on the phase change thermal storage unit, the first mounting member includes a first mounting plate, the first mounting plate is opposite to and spaced from the second end of the phase change thermal storage unit; a second mounting member, mounted on the inner wall of the inner tank, the second mounting member includes a third mounting plate, the third mounting plate is stacked with the first mounting plate, and the third mounting plate is connected to the first mounting plate.

[0033] In some embodiments, the mounting structure includes: a first mounting member, including a first mounting plate and a second mounting plate connected to the first mounting plate, the first mounting plate is connected to the inner tank, the second mounting plate is connected to the phase change thermal storage unit, and at least one of the first mounting plate and the second mounting plate is provided with a through hole for a partial structure of the pipeline assembly to pass through.

[0034] In some of the embodiments, a sealing ring is provided between a partial structure of the pipeline assembly and an inner wall surface of the through hole.

[0035] In some of the embodiments, the phase change thermal storage device includes two mounting structures, which are respectively arranged corresponding to the two sides of the phase change thermal storage unit along the third direction, so as to connect the two sides of the phase change thermal storage unit along the third direction to the inner tank respectively.

[0036] In some embodiments, the phase change heat storage device also includes an insulation layer, which is located between the inner liner and the outer shell. The insulation layer includes a first insulation layer and a second insulation layer. The first insulation layer is closer to the inner liner than the second insulation layer, and the hardness of the first insulation layer is lower than that of the second insulation layer.

[0037] In some embodiments, the first insulation layer includes at least one of a sponge layer and a rubber layer; and / or the second insulation layer includes at least one of a vacuum insulation board and a polyurethane board.

[0038] In some of the embodiments, the phase-change thermal storage unit further includes a fin group, the fin group includes a plurality of sheet-shaped fins, and the fins have openings for the pipes to pass through; wherein the fins include aluminum sheets.

[0039] In a second aspect, an embodiment of the present application provides a HVAC system, which includes the above-mentioned phase change heat storage device.

[0040] The phase change heat storage device based on the embodiment of the present application includes at least one phase change heat storage unit, wherein 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 an energy release flow path, the charging flow path is used to provide energy to the phase change material, and the energy release flow path is used to extract energy from the phase change material when needed, and the pipeline assembly is responsible for transmitting the fluid.

[0041] On the one hand, the pipeline assembly distributes the fluid to each charging flow path, and on the other hand, the pipeline assembly is also responsible for collecting the fluid flowing out of each charging flow path, thereby ensuring that the fluid can enter or flow out of the charging flow path evenly, thereby improving the efficiency of energy exchange.

[0042] Furthermore, the 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, wherein the first main pipe is a trunk pipeline. The first main pipe, as the starting point of each first branch pipe, can play the role of gathering each first branch pipe and connecting the corresponding multiple charging flow paths. By setting the first main pipe, the number of pipelines connecting the charging inlet flow path and the 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, which is convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 This is a schematic diagram of the three-dimensional structure of a phase change thermal storage device in one embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the heat exchanger; Figure 3 This is a schematic diagram of the three-dimensional structure of a phase change thermal storage device in one embodiment of the present application; Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the pipeline assembly; Figure 5 for Figure 3 A schematic diagram of the three-dimensional structure of the pipeline assembly; Figure 6 for Figure 3 A schematic diagram of the three-dimensional structure of the pipeline assembly; Figure 7 for Figure 3 A schematic diagram of the three-dimensional structure of the pipeline assembly; Figure 8 for Figure 3 An enlarged perspective view at B in FIG. Fig. 9 for Figure 8 A cross-sectional schematic diagram of a pipeline assembly in a certain viewing angle; Fig.10 for Figure 3 Schematic cross-sectional view of ; Fig.11 is a schematic diagram of the three-dimensional structure of the limiting member; Fig.12 for Fig.11The enlarged schematic diagram at C in FIG. Fig.13 for Fig.11 The enlarged schematic diagram at C in FIG. Fig.14 It is a schematic diagram of the disassembly of the installation structure; Fig.15 It is an assembly diagram of the installation structure; Fig.16 is a schematic diagram of installation of the second mounting member; Fig.17 A cross-sectional view of the mounting structure assembly; Fig.18 It is a schematic diagram of the splitting of the fixed structure; Fig.19 This is a schematic diagram of the installation of the fixed structure; Fig. 20 for Fig.19 An enlarged schematic diagram of Fig.21 This is a schematic diagram of the three-dimensional structure of a phase change thermal storage device in one embodiment of the present application; Fig. 22 for Fig.21 Schematic diagram of the disassembly of the phase change thermal storage device; Fig.23 for Fig.21 A perspective view of a phase change thermal storage device; Fig.24 for Fig.21 Schematic diagram of the splitting of the middle insulation layer; Fig.25 for Fig.21 Cross-sectional view of the phase change thermal storage device.

[0045] Reference numerals: 1000, phase change heat storage device; 1, phase change heat storage unit; 1a, first end; 1b, second end; 11, heat exchanger; 111, charging flow path; 111a, charging inlet; 111b, charging outlet; 1111, charging pipe section; 1112, charging connecting pipe; 112, discharging flow path; 112a, discharging inlet; 112b, discharging outlet; 1121, discharging pipe section; 1122, discharging connecting pipe; 12, pipeline assembly; 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 1212, charging inlet manifold; 1213, charging inlet main pipe; 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-manifold; 1222, charging outlet main pipe; 1223, charging outlet manifold; 123, discharge inlet flow path; 1231, third connecting pipeline; 1231a, third main pipe; 1231a', first discharge inlet pipe section; 1231a", second discharge inlet pipe section; 1231b, third branch pipe; 1232, discharge inlet main pipe; 1233, Energy release inlet manifold; 124, energy release outlet flow path; 1241, fourth connecting pipeline; 1241a, fourth main pipe; 1241a', first energy release outlet pipe section; 1241a", second energy release outlet pipe section; 1241b, fourth branch pipe; 1242, energy release outlet main pipe; 1243, energy release outlet manifold; 2, positioning assembly; 21, fixing structure; 211, top connecting piece; 2111, first connecting top plate; 2111a, main board; 2111b, mounting side plate; 2112, second connecting top plate; 2112a, lifting hole position; 212, bottom connecting piece; 22, limiting piece; 221, limiting plate; 221a, avoidance hole; 222, connecting plate; 2221, connecting bottom plate; 2222, connecting side plate; 2222a, connecting hole; 223, transition plate; 223a, second side; 224, limiting side plate; 2241, first plate section; 2241a, first side; 2242, second plate section; 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; 100, liner; 200, phase change thermal storage material; 300, shell; 310, outer plate; 311, pipe port; 312, wire port; 320, outer top plate; 330, outer bottom plate; 340, outer support foot; 400, insulation layer; 410, first insulation layer; 420, second insulation layer;X, first direction; Y, second direction; Z, third direction. ; DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with 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.

[0047] 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.

[0048] In the prior art, in order to facilitate the installation direction of the heat exchange pipeline to be set in the same direction as the filling direction of the phase change material, the input pipe and the 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 be 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 dense heat exchange pipelines on the side of the heat exchanger, resulting in inconvenience in installation, and 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.

[0049] To solve the above technical problems, please refer to Figure 1-5 The present application provides a phase change heat storage device 1000, comprising at least one phase change heat storage unit 1, the phase change heat storage unit 1 comprising a heat exchanger 11 and a pipeline assembly 12, the heat exchanger 11 comprising at least two charging flow paths 111 and at least two discharging flow paths 112, the charging flow path 111 having a charging inlet 111a and a charging outlet 111b; the pipeline assembly 12 comprising a charging inlet flow path 121 and a charging outlet flow path 122, the charging inlet flow path 121 comprising a first connecting pipeline 1211, the first connecting pipeline 1211 comprising a first main pipe 1 211a and at least two first branch pipes 1211b, the first main pipe 1211a is connected to each first branch pipe 1211b, each first branch pipe 1211b is connected to the charging inlet 111a of each charging flow path 111, the charging outlet flow path 122 includes a second connecting pipe, the second connecting pipe 1221 includes a second main pipe 1221a and at least two second branch pipes 1221b, the second main pipe 1221a is connected to each second branch pipe 1221b, and each second branch pipe 1221b is connected to the charging outlet 111b of each charging flow path 111.

[0050] 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, wherein 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 an energy release flow path 112, the charging flow path 111 is used to provide energy to the phase change material, and the energy release flow path 112 is used to extract energy from the phase change material when needed, and the pipeline assembly 12 is responsible for transmitting the fluid. On the one hand, the pipeline assembly 12 distributes the fluid to each charging flow path 111, and on the other hand, the pipeline assembly 12 is also responsible for collecting the fluid flowing out of each charging flow path 111, thereby ensuring that the fluid can evenly enter or flow out of the charging flow path 111, thereby improving the efficiency of energy exchange.

[0051] Furthermore, the charging inlet flow path 121 includes a first connecting pipeline 1211, and the first connecting pipeline 1211 includes a first main pipe 1211a and at least two first branch pipes 1211b, wherein the first main pipe 1211a is a main pipeline. The first main pipe 1211a, as the starting point of each first branch pipe 1211b, can play the role of gathering each first branch pipe 1211b to connect multiple charging flow paths 111 corresponding to multiple first branch pipes 1211b. Similarly, the second main pipe 1221a can gather each second branch pipe 1221b to connect the corresponding multiple charging outlet flow paths 122. By providing 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, 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.

[0052] Please refer to Figure 4 and Figure 5 , the first connecting pipeline 1211 also 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, and the port of each charging inlet branch pipe 1211d away from the end of 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 diverted from the charging inlet main pipe 1211c to the at least two charging inlet branch pipes 1211d connected thereto. In the embodiment of the present application, the charging inlet main pipe 1211c and the at least two charging inlet branch pipes 1211d are an integrated structure, the charging inlet main pipe 1211c and the first main pipe 1211a are correspondingly inserted, and the charging inlet branch pipe 1211d and the first branch pipe 1211b are correspondingly inserted.

[0053] Furthermore, in some embodiments, the sizes of the various charging inlet branch pipes 1211d are consistent, so that the charging inlet main pipe 1211c can evenly distribute the fluid to the charging inlet branch pipes 1211d connected thereto, and each charging inlet branch pipe 1211d is connected to 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 by each charging flow path 111, ensuring uniform heat distribution, reducing overheating in certain areas, and effectively improving the energy storage efficiency of the phase change thermal storage device 1000.

[0054] 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 embodiment of the present application, the charging inlet main pipe 1211c and each charging inlet branch pipe 1211d include two layout modes.

[0055] In one embodiment, the first axis is located in a first plane, and the charging inlet main pipe 1211c and each charging inlet branch pipe 1211d are located in the same plane. Such an arrangement facilitates the processing and manufacturing of the charging inlet main pipe 1211c and the charging inlet branch pipe 1211d, and because 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 pipe 1211d is clear, the pipeline layout is smooth, and the fluid is easily evenly distributed.

[0056] 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 along the three-dimensional space, thereby reducing the problem of excessive size in a certain direction, and distributing the size of the charging inlet main pipe 1211c and the size of each charging inlet branch pipe 1211d in different directions, so as to more flexibly utilize the space resources in the phase change thermal storage device 1000, and can be applied to the situation where the internal space is limited.

[0057] When the first axis is perpendicular to the second plane, the internal space of the phase change thermal storage device 1000 can be used more compactly, so that the arrangement of the pipeline structure is reasonable. The reasonable geometric layout makes maintenance and repair more convenient, reducing the cost of long-term operation.

[0058] Similarly, for the charging outlet 111b, the second connecting pipeline 1221 also includes: a charging outlet main pipe 1221c, which is connected to the second main pipe 1221a; and at least two charging outlet branch pipes 1221d, each of which is connected to the charging outlet main pipe 1221c, and each of which has a port at one end away from the charging outlet main pipe 1221c and connected to the second branch pipe 1221b. It can be understood that when the fluid flows to the charging outlet main pipe 1221c, it is divided from the charging outlet main pipe 1221c to the 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 an integrated 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.

[0059] Furthermore, in some embodiments, the sizes of the various charging outlet branch pipes 1221d are consistent, so that the charging outlet main pipe 1221c can evenly distribute the fluid to the charging outlet branch pipes 1221d connected thereto, and each charging outlet branch pipe 1221d is connected to 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 by each charging flow path 111, ensuring uniform heat distribution, reducing overheating in certain areas, and thereby effectively improving the energy storage efficiency of the phase change thermal storage device 1000.

[0060] The charging outlet main pipe 1222 extends along the third axis, each charging outlet branch pipe 1221d extends along the fourth axis, 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 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.

[0061] In one embodiment, the third axis is located in the third plane, and the charging outlet main pipe 1221c and each charging outlet branch pipe 1221d are located in the same plane. Such a configuration facilitates the processing and manufacturing of the charging outlet main pipe 1221c and the charging outlet branch pipe 1221d, and because 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 pipe 1221d is clear, the pipeline layout is smooth, and the fluid is easily evenly distributed.

[0062] 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 charging outlet main pipe 1221c and each charging outlet branch pipe 1221d are arranged along the three-dimensional space, thereby reducing the problem of excessive size in a certain direction, and distributing the size of the charging outlet main pipe 1221c and the size of each charging outlet branch pipe 1221d in different directions, so as to more flexibly utilize the space resources in the phase change thermal storage device 1000, and can be applied to the situation where the internal space is limited.

[0063] When the third axis is perpendicular to the fourth plane, the internal space of the phase change heat storage device 1000 can be used more compactly, so that the pipeline structure is arranged reasonably. The reasonable geometric layout makes subsequent maintenance and inspection more convenient, reducing the cost of long-term operation.

[0064] In addition, please refer to Figures 1 to 5 The phase change heat storage device 1000 includes multiple phase change heat storage units 1, the charging inlet flow path 121 also includes a charging inlet main pipe 1213 and a charging inlet collecting pipe 1212, there are multiple first connecting pipelines 1211, the charging inlet collecting pipe 1212 is connected to the charging inlet main pipe 1213, and the multiple first main pipes 1211a of the multiple first connecting pipelines 1211 are all connected to the charging inlet collecting pipe 1212; the charging outlet flow path 122 also includes a charging outlet main pipe 1222 and a charging outlet collecting pipe 1223, there are multiple second connecting pipelines 1221, the charging outlet collecting pipe 1223 is connected to the charging outlet main pipe 1222, and the multiple second main pipes 1221a of the multiple second connecting pipelines 1221 are all connected to the charging outlet collecting pipe 1223. By providing multi-level pipelines, it is ensured that the energy of the phase change thermal storage device 1000 can be evenly distributed, and the stability and reliability of the entire phase change thermal storage device 1000 are improved.

[0065] Specifically, the charging inlet main pipe 1213 in the present application is the main inlet for receiving external thermal fluid in the phase change thermal storage device 1000, and is usually located at the front end of the system as a centralized inlet for all thermal fluids, and the charging inlet header 1212 is an intermediate link. The charging inlet header 1212 is used to evenly distribute the thermal fluid from the charging inlet main pipe 1213 to multiple first connecting pipelines 1211, that is, the charging inlet header 1212 is used to connect multiple first main pipes 1211a.

[0066] 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, serving as a centralized outlet for collecting the fluids from various pipelines, and 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.

[0067] To summarize, through the charging inlet manifold 1212 and the charging outlet manifold 1223, the thermal fluid can be evenly distributed to each phase change thermal storage unit 1, and after sufficient heat exchange, it can be collected and flowed out to ensure that each phase change thermal storage unit 1 can obtain the most equal heat input, thereby achieving efficient distribution of energy and ensuring the overall energy exchange efficiency of the phase change thermal storage device 1000.

[0068] 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 along the first direction X, the charging inlet 111a is located at the first end 1a, the charging outlet 111b is located at the second end 1b, and the charging inlet main pipe 1213, the charging inlet collecting pipe 1212, the charging outlet main pipe 1222, and the charging outlet collecting pipe 1223 are located on the same side of the heat exchanger 11 along the first direction X and close to the first end 1a.

[0069] In one embodiment of the present application, the main pipeline components 12 such as the charging inlet main pipe 1213, the charging inlet collecting pipe 1212, the charging outlet main pipe 1222, and the charging outlet collecting pipe 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, which can save space and make the pipeline layout more compact.

[0070] 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 to 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.

[0071] It can be understood that 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 close to the first end 1a, and the charging inlet 111a is located at the first end 1a and the charging inlet 111a extends along the second direction Y. Therefore, in order to connect the charging inlet manifold 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 1211 a' extends along the first direction X and has one end close to the charging inlet 111a, the second charging inlet pipe segment 1211a" extends along the second direction Y and connects the charging inlet manifold 1212 and the first charging inlet pipe segment 1211a', the first charging inlet pipe segment 1211a' and the second charging inlet pipe segment 1211a" extending along different directions can be used to adapt to the structure of the heat exchanger 11 and minimize the extension of the size along 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.

[0072] The second main pipe 1221a includes a first charging outlet pipe section 1221a' and a second charging outlet pipe section 1221a" which are connected to each other. The first 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 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 close to the first end 1a. The second direction Y is perpendicular to the first direction X.

[0073] Similarly, 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 close to the first end 1a, and the charging outlet 111b is located at the second end 1b and the charging outlet 111b extends along the second direction Y. Therefore, in order to connect the charging outlet manifold 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' Extending along the first direction X and with one end close to the charging outlet 111b, the second charging outlet pipe segment 1221a" extends along the second direction Y and connects the charging outlet manifold 1223 and the first charging outlet pipe segment 1221a'. The first charging outlet pipe segment 1221a' and the second charging outlet pipe segment 1221a" extending along different directions can be used to adapt to the structure of the heat exchanger 11 and minimize the extension of the size along 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.

[0074] In addition, in some other embodiments, Figures 1 to 3 ,as well as Figure 6 to Figure 7 The energy release flow path 112 has an energy release inlet 112a and an energy release outlet 112b. The pipeline assembly 12 also includes an energy release inlet flow path 123 and an energy release outlet flow path 124. The energy release 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 is connected to each third branch pipe 1231b. Each third branch pipe 1231b is connected to the energy release inlet 112a of each energy release flow path 112. The energy release 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 is connected to each fourth branch pipe 1241b. Each fourth branch pipe 1241b is connected to the energy release outlet 112b of each energy release flow path 112. It can be understood that the structure of the energy discharging flow path 112 is similar to that of the energy charging flow path 111 , and thus the energy discharging flow path 112 has a similar effect to that of the energy charging flow path 111 .

[0075] Specifically, the energy release flow path 112 is used to connect external water, the third main pipe 1231a is the main pipeline in the energy release inlet flow path 123, responsible for introducing external fluid into the phase change thermal storage device 1000, and the third branch pipe 1231b is a branch of the third main pipe 1231a, each of the third branch pipes 1231b is connected to the energy release inlet 112a of an energy release flow path 112, thereby ensuring that the fluid can evenly enter each energy release flow path 112, thereby improving the uniformity and efficiency of energy release; correspondingly, the fourth main pipe 1241a is the main pipeline in the energy release outlet flow path 124, responsible for collecting fluids coming out of each energy release flow path 112, the fourth branch pipe 1241b is a pipeline connecting the energy release outlets 112b of each energy release flow path 112, and each fourth branch pipe 1241b is connected to the fourth main pipe 1241a, which can ensure that the fluids coming out of each energy release flow path 112 can be effectively collected for further processing or discharge. By providing the third main pipe 1231a and the fourth main pipe 1241a, the number of pipes connecting the energy release inlet flow path 123 and the energy release outlet flow path 124 can be effectively reduced, so that the pipes inside the phase change heat storage device 1000 will not be too dense, which is convenient for installing the corresponding pipe structure, and can also reserve a certain space for subsequent leak detection and leak repair, which is convenient for subsequent maintenance.

[0076] In some of the embodiments, multiple phase change heat storage units 1 are included, the energy release inlet flow path 123 also includes an energy release inlet main pipe 1232 and an energy release inlet collecting pipe 1233, there are multiple third connecting pipelines 1231, the energy release inlet collecting pipe 1233 is connected to the energy release inlet main pipe 1232, and multiple third main pipes 1231a of the multiple third connecting pipelines 1231 are all connected to the energy release inlet collecting pipe 1233; the energy release outlet flow path 124 also includes an energy release outlet main pipe 1242 and an energy release outlet collecting pipe 1243, there are multiple fourth connecting pipelines 1241, the energy release outlet collecting pipe 1243 is connected to the energy release outlet main pipe 1242, and multiple fourth main pipes 1241a of the multiple fourth connecting pipelines 1241 are all connected to the energy release outlet collecting pipe 1243.

[0077] Specifically, the energy release inlet main pipe 1232 is the main entrance of the energy release flow path 112, and is responsible for introducing external fluid into the phase change heat storage device 1000. The energy release inlet collecting pipe 1233 is responsible for evenly distributing the fluid from the energy release inlet main pipe 1232 to the multiple third connecting pipes 1231. In the embodiment of the present application, the energy release inlet collecting pipe 1233 is connected to the energy release inlet main pipe 1232, and is connected 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 inlet 112a of each energy release flow path 112 through the third branch pipe 1231b.

[0078] 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, which is responsible for collecting the fluid coming out of each energy release flow path 112 and discharging it out of the system. The energy release outlet collecting pipe 1243 is responsible for collecting the fluid coming out of multiple fourth connecting pipelines 1241, and transporting it to the energy release outlet main pipe 1242 after aggregation. The energy release outlet collecting pipe 1243 is connected to the energy release outlet main pipe 1242, and is connected to the fourth main pipes 1241a of the multiple fourth connecting pipelines 1241. The multiple fourth connecting pipelines 1241 are responsible for collecting the fluid coming out of each energy release flow path 112 to the energy release outlet collecting pipe 1243. The fourth main pipe 1241a of each fourth connecting pipeline 1241 is connected to the energy release outlet collecting pipe 1243, and then the fluid is collected from each energy release flow path 112 through the fourth branch pipe 1241b.

[0079] In the embodiment of the present application, an energy release inlet main pipe 1232, an energy release inlet manifold 1233, an energy release outlet main pipe 1242 and an energy release outlet manifold 1243 are provided to divide and aggregate the external fluid, further optimizing the uniformity of energy release in the phase change thermal storage device 1000. This not only improves the reliability of the phase change thermal storage device 1000, but also simplifies maintenance work, provides support for flexible expansion, and enables the phase change thermal storage device 1000 to be more efficient and stable in practical applications.

[0080] In some embodiments, the phase change thermal storage unit 1 has a first end 1a and a second end 1b opposite to each other along the first direction X, the energy release inlet 112a is located at the second end 1b, the energy release outlet 112b is located at the first end 1a, the energy release inlet main pipe 1232, the energy release inlet manifold 1233, the energy release outlet main pipe 1242, and the energy release 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 energy release inlet pipe section 1231a' and a second energy release inlet pipe section 1231a" that are connected, and the first energy release inlet pipe sections 1231a' of the plurality of third main pipes 1231a are all connected along the second direction Y is located on the same side of the heat exchanger 11, and the second energy release 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 energy release outlet pipe section 1241a' and a second energy release outlet pipe section 1241a" that are connected to each other, and the first energy release 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, and the second energy release 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, and the second direction Y is perpendicular to the first direction X.

[0081] In one embodiment of the present application, the main pipeline components 12 such as the energy release inlet main pipe 1232, the energy release inlet collecting pipe 1233, the energy release outlet main pipe 1242, and the energy release outlet collecting pipe 1243 are all located on the same side of the heat exchanger 11 and close to the first end 1a where the energy release inlet 112a is located, which can save space and make the pipeline layout more compact.

[0082] Correspondingly, the third main pipe 1231a includes a first energy-releasing inlet pipe section 1231a' and a second energy-releasing inlet pipe section 1231a" which are connected to each other. The first energy-releasing 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, and the second energy-releasing 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 first end 1a.

[0083] It can be understood that the main pipeline components 12 such as the energy release inlet main pipe 1232, the energy release inlet header 1233, the energy release outlet main pipe 1242, and the energy release outlet header 1243 are all close to the first end 1a, and 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 header 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 1231 a' extends along the first direction X and has one end close to the energy release inlet 112a. The second energy release inlet pipe segment 1231a" extends along the second direction Y and connects the energy release inlet manifold 1233 and the first energy release inlet pipe segment 1231a'. The first energy release inlet pipe segment 1231a' and the second energy release inlet pipe segment 1231a" extending along different directions can be used to adapt to the structure of the heat exchanger 11 and minimize the extension of the size along a single direction, thereby ensuring the compactness of the pipeline layout, reducing the occupied volume, and facilitating the utilization of the phase change material.

[0084] The fourth main pipe 1241a includes a first energy release outlet pipe section 1241a' and a second energy release outlet pipe section 1241a" which are connected to each other. The first energy release 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 energy release 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.

[0085] Similarly, the main pipeline components 12 such as the energy release inlet main pipe 1232, the energy release inlet header 1233, the energy release outlet main pipe 1242, and the energy release outlet header 1243 are all close to the first end 1a, and 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 header 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' The second energy release outlet pipe segment 1241a" extends along the first direction X and has one end close to the energy release outlet 112b. The second energy release outlet pipe segment 1241a" extends along the second direction Y and connects the energy release outlet manifold 1243 and the first energy release outlet pipe segment 1241a'. The first energy release outlet pipe segment 1241a' and the second energy release outlet pipe segment 1241a" extending along different directions can be used to adapt to the structure of the heat exchanger 11 and minimize the extension of the size along a single direction, thereby ensuring the compactness of the pipeline layout, reducing the occupied volume, and facilitating the utilization of the phase change material.

[0086] It can be understood that the phase change thermal 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, the charging outlet 111b is located at the second end 1b, and the energy discharge flow path 112 has an energy discharge inlet 112a located at the second end 1b and an energy discharge outlet 112b located at the first end 1a. It can be understood that such a configuration makes the flow direction of the fluid in the charging flow path 111 opposite to the flow direction of the fluid in the energy discharge flow path 112. In actual application, the reverse flow helps to form a temperature gradient, so that the heat energy is more evenly distributed in the phase change material, avoiding local overheating or overcooling, and improving the overall energy utilization of the phase change material, thereby significantly improving the energy exchange efficiency of the phase change thermal storage device 1000, enhancing the reliability of the system, and optimizing energy utilization. This design makes the phase change thermal storage device 1000 more efficient and stable in actual applications.

[0087] In some 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 distributed at intervals 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 distributed at intervals 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 between two adjacent discharging pipe segments 1121. In an embodiment of the present application, an external thermal fluid enters the system from the charging inlet 111a, flows through a plurality of charging pipe sections 1111 in sequence, heats the phase change material, and then flows out from the charging outlet 111b. During this process, the thermal fluid first enters the colder phase change material region, gradually heats the phase change material, and finally flows out of the system; an external cooling fluid enters the system from the discharge inlet 112a, flows through a plurality of discharge pipe sections 1121 in sequence, absorbs the heat released by the phase change material, and then flows out from the discharge 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 staggeredly distributing the charging pipe sections 1111 and the discharge pipe sections 1121, it can be ensured that the heat exchange between the thermal fluid and the cooling fluid is more uniform and efficient during the charging and discharging process, thereby reducing thermal stress. This facilitates the alternating flow of the thermal fluid and the external cooling fluid in the phase change material, thereby improving the efficiency of energy exchange.

[0088] Please refer to Figure 2The multiple charging pipe sections 1111 of each charging flow path 111 are all located in a charging installation surface, and the multiple energy discharging pipe sections 1121 of each energy discharging flow path 112 are all located in an energy discharging installation surface, wherein the charging installation surface and the energy discharging installation surface are spaced apart along the third direction Z, and / or, along the third direction Z, an energy discharging installation surface is arranged between every two adjacent charging installation surfaces, and / or, along the third direction Z, an energy discharging installation surface is arranged between every two adjacent energy discharging installation surfaces, and the third direction Z is perpendicular to the first direction X. In an embodiment of the present application, the charging tube segments 1111 are distributed at intervals along the first direction X, and all the charging tube segments 1111 are on the same plane, that is, within the charging installation surface. The energy discharging tube segments 1121 are distributed at intervals along the first direction X, and all the energy discharging tube segments 1121 are on the same plane, that is, within the energy discharging installation surface. By staggered distribution of the energy discharging installation surface and the energy discharging installation surface, it is ensured that the spacing between the energy discharging tube segments 1111 and the energy discharging tube segments 1121 is reasonable and the heat transfer efficiency is consistent, thereby ensuring that during the charging and discharging process, the heat exchange between the hot fluid and the external cooling fluid is more uniform and efficient. This design allows the hot fluid and the cooling fluid to flow alternately in the phase change material, thereby improving the efficiency of energy exchange.

[0089] Furthermore, the charging tube section 1111 extends along the second direction Y, the discharging tube section 1121 extends along the second direction Y, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other. This arrangement ensures that the charging tube section 1111 and the discharging tube section 1121 can ensure that the flow path of the fluid along the second direction Y in the phase change thermal storage unit 1 is more uniform, thereby improving the heat transfer efficiency. In the process of the fluid flowing along the second direction Y, it can contact the phase change material more uniformly, thereby improving the efficiency of energy exchange.

[0090] In addition, the charging flow path 111 further includes a charging connecting pipe 1112 connected between two adjacent charging pipe segments 1111 along its flow direction, and the 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 an energy discharging connecting pipe 1122 connected between two adjacent energy discharging pipe segments 1121 along its flow direction, and the two adjacent energy discharging connecting pipes 1122 are located on opposite sides of the multiple energy discharging pipe segments 1121 along the second direction Y. It can be understood that each charging pipe segment 1111 and each energy discharging pipe segment 1121 are arranged at intervals along the first direction X, and each pipeline extends along the second direction Y. The charging connecting pipe 1112 and the energy discharging connecting pipe 1122 are respectively connected to the adjacent charging pipe segments 1111 and the energy discharging pipe segments 1121 to ensure the fluidity of the charging flow path 111 and the energy discharging flow path 112.

[0091] In some embodiments, the first connecting pipeline 1211 and the second connecting pipeline 1221 include any one of aluminum tubes, aluminum alloy tubes, copper tubes, copper alloy tubes and stainless steel tubes; and / or, the third connecting pipeline 1231 and the fourth connecting pipeline 1241 include any one of copper tubes, copper alloy tubes and stainless steel tubes; and / or, the charging flow path 111 and the discharging flow path 112 include any one of copper tubes and copper alloy tubes; and / or, the charging inlet main pipe 1213, the charging inlet collecting pipe 1212, the charging outlet main pipe 1222, the charging outlet collecting pipe 1223, the discharging inlet main pipe 1232, the discharging inlet collecting pipe 1233, the discharging outlet main pipe 1242, and the discharging outlet collecting pipe 1243 include stainless steel tubes. It is understandable that the first connecting pipeline 1211, the second connecting pipeline 1221 are connected to the thermal fluid, and the thermal fluid circulates inside the structure of the phase change heat storage device 1000 and does not contact the outside world. Therefore, it is possible to select aluminum tubes and aluminum alloy tubes that are light but not corrosion-resistant. The third connecting pipeline 1231 and the fourth connecting pipeline 1241 are generally connected to the external fluid, so it is necessary to select copper tubes, copper alloy tubes or stainless steel tubes with stronger corrosion resistance to resist external corrosion. In this application, aluminum tubes, aluminum alloy tubes, copper tubes, copper alloy tubes and stainless steel tubes all have good thermal conductivity. By reasonably selecting pipelines of different materials, it can be ensured that the phase change heat storage device 1000 performs best in different application scenarios. The specific selection of which material of the pipeline should be determined according to actual needs such as thermal conductivity, corrosion resistance, mechanical strength, etc. In this application, the selection of targeted materials for different pipelines not only improves the efficiency and reliability of the system, but also reduces maintenance costs, making the phase change heat storage device 1000 more efficient and stable in practical applications.

[0092] In some of the embodiments, the phase change thermal storage device 1000 further includes a positioning assembly 2 , the positioning assembly 2 includes a fixing structure 21 , the fixing structure 21 extends along a third direction Z and is fixedly connected to the plurality of phase change thermal storage units 1 .

[0093] Please refer to Figures 18 to 20 The phase change heat storage device 1000 further includes a fixed structure 21, which extends along the third direction Z and is fixedly connected to the plurality of phase change heat storage units 1. In the present application, the fixed structure 21 is used to connect and fix the plurality of heat exchanger 11 bodies, and to maintain the gaps between the plurality of heat exchanger 11 bodies, so that the gaps between the respective heat exchanger 11 bodies are appropriate, thereby ensuring that the phase change material can flow smoothly between the plurality of heat exchanger 11 bodies, improving the heat exchange efficiency, and also helping to prevent contact and vibration between the heat exchanger 11 bodies, thereby improving the stability and heat exchange efficiency of the heat exchanger 11.

[0094] In some of the embodiments, the fixed structure 21 includes: two top connecting members 211, connected to the tops of the multiple phase change thermal storage units 1, and each top connecting member 211 is relatively arranged along the second direction Y; and two bottom connecting members 212, connected to the bottoms of the multiple phase change thermal storage units 1, and each bottom connecting member 212 is relatively arranged along the second direction Y.

[0095] In some of the embodiments, the fixing structure 21 includes: two top connectors 211 and two bottom connectors 212, the top connector 211 is connected to the top of the plurality of phase-change thermal storage units 1, and each top connector 211 is arranged relatively along the second direction Y; the two bottom connectors 212 are connected to the bottom of the plurality of phase-change thermal storage units 1, and each bottom connector 212 is arranged relatively along the second direction Y. It can be understood that the top of the phase-change thermal storage unit 1 is the end of the phase-change thermal storage unit 1 close to the top cover, and correspondingly, the bottom of the phase-change thermal storage unit 1 is the end of the phase-change thermal storage unit 1 close to the bottom cover 3, wherein the two top connectors 211 and the two bottom connectors 212 are respectively used to maintain the gap between the top and the bottom of the phase-change thermal storage unit 1 to prevent the phase-change thermal storage units 1 from contacting each other and to maintain an appropriate gap. By connecting to the tops of multiple phase-change thermal storage units 1, the top connector 211 helps to enhance the structural stability of the entire heat exchanger 11 assembly and reduce displacement caused by vibration or external forces. The same is true for the bottom connector 212, and the bottom connector 212 can provide additional support for the connection at the bottom of the phase-change thermal storage unit 1 to ensure the stability of the phase-change thermal storage unit 1 under gravity and other loads. It can be understood that the top connector 211 and the bottom connector 212 together enhance the structural integrity of the entire heat exchanger 11, allowing it to remain stable under various operating conditions.

[0096] For further information, please refer to Fig.18 and Fig. 20 The top connecting member 211 includes: a first connecting plate 222, including a main board 2111a extending along the third direction Z and a plurality of mounting plates extending along the first direction X and arranged at intervals along the third direction Z, each mounting plate being connected to the top of the phase change thermal storage unit 1; a second connecting plate 222, the second connecting plate 222 extending along the first direction X, the second connecting plate 222 being connected to the main board 2111a, and the second connecting plate 222 being provided with lifting holes 2112a at intervals along the third direction Z.

[0097] The first connecting top plate 2111 includes a main board 2111a and an installation side plate 2111b, wherein the main board 2111a is connected to the tops of multiple phase change heat storage units 1, and the installation side plates 2111b correspond to the number of phase change heat storage units 1, and are connected to the sides of each phase change heat storage unit 1 relative to each other along the third direction Z. It can be understood that the main board 2111a has a fixing effect on the tops of each phase change heat storage unit 1, while the installation side plates 2111b fix the sides, further ensuring the fixing and spacing effects of the top connecting member 211, and enhancing the structural strength of the phase change heat storage device 1000.

[0098] In addition, in the present application, the second connecting member extends away from the installation side plate 2111b and is provided with a hoisting hole 2112a, which is convenient for installation through the connection hoisting hole 2112a during the installation process of the phase change thermal storage device 1000. Furthermore, the number of hoisting holes 2112a on the second connecting top plate 2112 can be multiple, thereby increasing the hoisting points, facilitating stability during hoisting, and ensuring the safety of the phase change thermal storage device 1000 during installation.

[0099] Please refer to Fig.10 The phase change heat storage device 1000 further includes: a phase change heat storage material 200; an inner liner 100, wherein the inner liner 100 has a containing space, wherein a plurality of phase change heat storage units 1 and the phase change heat storage material 200 are located in the containing space; and an outer shell 300, wherein the outer shell 300 is sleeved outside the inner liner 100. The phase change thermal storage material 200 can undergo phase change within a certain temperature range, absorb or release a large amount of heat, thereby realizing efficient storage and release of energy. The phase change thermal storage material 200 is located in the accommodating space of the inner liner 100, and is connected to the charging and discharging flow path 112 through the phase change thermal storage unit 1. The inner liner 100 has an accommodating space for accommodating the phase change thermal storage material 200 and the phase change thermal storage unit 1. In some embodiments, the inner liner 100 is made of high temperature resistant and corrosion resistant materials, providing a closed working environment, protecting the phase change thermal storage material 200 from the external environment, and ensuring that it can work safely and stably under high or low temperature conditions. The outer shell 300 is mounted on the outside of the inner liner 100 and is made of a material with good thermal insulation properties, which further protects the inner liner 100 and its internal components from the external environment, while providing an additional thermal insulation layer to reduce energy loss and improve the overall efficiency of the system.

[0100] Please refer to Figures 8 to 13The phase-change thermal storage device 1000 further includes a positioning assembly 2, the positioning assembly 2 includes a limiting assembly, the phase-change thermal storage unit 1 has a first end 1a and a second end 1b opposite to each other along a first direction X, and the limiting assembly is installed at the second end 1b of the phase-change thermal storage unit 1. It can be understood that during installation, the second end 1b of the phase-change thermal storage unit 1 is generally assembled, and the limiting assembly is arranged at the second end 1b of the phase-change thermal storage unit 1, which can prevent the phase-change thermal storage unit 1 from colliding with other components, thereby playing a protective effect on the phase-change thermal storage unit 1 in all directions.

[0101] Furthermore, the limiting assembly includes two limiting members 22 that are relatively arranged along the second direction Y, and at least a portion of each limiting member 22 protrudes from the phase-change thermal storage unit 1 along the second direction Y, and the first direction X is perpendicular to the second direction Y. In order to further ensure the limiting effect, a portion of each limiting member 22 protrudes from the phase-change thermal storage unit 1 along the second direction Y, thereby spacing the pipeline assembly 12 and the inner tank 100 in the second direction Y, so as to reduce the collision between the pipeline assembly 12 and the inner tank 100 in the second direction Y, thereby protecting the phase-change thermal storage unit 1.

[0102] In addition, the limit assembly maintains the gap between the pipeline assembly 12 and the inner liner 100 within a certain safety range. Even if there is unstable shaking during installation or transportation, there will only be a collision between the limit member 22 and the inner liner 100, and the pipeline assembly 12 will not be collided, thereby protecting the pipeline assembly 12.

[0103] 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 from the pipeline structure along the second direction Y. 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 from the pipeline structure along the second direction Y, and the limiting plate 221 and the phase change heat storage unit 1 are spaced apart, that is, there is a certain gap between the limiting plate 221 and the phase change heat storage unit 1, so the limiting plate 221 can play the role of isolating the pipeline structure from the shell. 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 to ensure that when the limiting plate 221 is displaced by a certain collision, it will not easily shift to the phase change heat storage unit 1, thereby achieving a better protection effect. The connecting plate 222 is used to be connected to the phase-change thermal storage unit 1 , thereby fixing the limiting plate 221 .

[0104] In some embodiments, the connecting plate 222 includes: a connecting bottom plate 2221, connecting an end of the limiting plate 221 close to the second end 1b and extending in a direction close to the phase-change thermal storage unit 1; a connecting side plate 2222, connecting an end of the connecting bottom plate 2221 away from the limiting plate 221 and extending in a direction away from the second end 1b, and the connecting side plate 2222 is connected to the phase-change thermal storage unit 1. It can be understood that the connecting bottom plate 2221 has an extension distance along the second direction Y, which can be used to space the limiting plate 221 and the connecting side plate 2222, and the connecting side plate 2222 extends in the direction of the second end 1b and is connected to the phase-change thermal storage unit 1, thereby realizing the connection between the limiting member 22 and the phase-change thermal storage unit 1. With such a configuration, the structure of the connecting member is simple and easy to install and maintain.

[0105] Further, the connecting side plate 2222 is provided with a connecting hole 2222a extending along the second direction Y, and the connecting side plate 2222 is connected to the phase-change thermal storage unit 1 via a locking member penetrating the connecting hole 2222a; and the limiting plate 221 is provided with an avoidance hole 221a corresponding to the connecting hole 2222a. The connecting side plate 2222 is provided with a connecting hole 2222a extending along the second direction Y, and the connecting side plate 2222 is connected to the phase-change thermal storage unit 1 via a locking member penetrating the connecting hole 2222a, and the limiting plate 221 is provided with an avoidance hole 221a corresponding to the connecting hole 2222a. In order to facilitate the installation of the limit member 22 and the stability of its assembly, the locking member includes bolts and screws, and the connecting hole 2222a extends along the second direction Y. The limit plate 221 is correspondingly provided with an avoidance hole 221a extending along the second direction Y. When the limit member 22 is actually assembled, the installation tool can extend from the avoidance hole 221a to the connecting hole 2222a to install or remove the locking member. Such a setting can realize the installation and removal of the locking member from the side, so that the installation tool can avoid the pipeline assembly 12 for installation, which improves the loading and unloading speed while ensuring that the pipeline assembly 12 will not collide with the installation tool, thereby protecting the pipeline assembly 12.

[0106] In some embodiments, the stopper 22 further includes a transition plate 223, which connects the stopper plate 221 with the connecting plate 222, and the transition plate 223 is set at an obtuse angle relative to the stopper plate 221 and the connecting plate 222. It can be understood that the transition plate 223 is connected to the connecting plate 222 at a certain obtuse angle, and the transition plate 223 extends in a direction close to the inner liner 100, thereby further increasing the distance between the stopper plate 221 and the pipeline assembly 12, reducing the probability of collision between the stopper plate 221 and the pipeline assembly 12, and the transition plate 223 and the stopper plate 221 are connected at an obtuse angle, thereby ensuring that the stopper plate 221 will not tilt in a direction close to the pipeline assembly 12.

[0107] Furthermore, the sum of the two obtuse angles must be greater than 70 degrees to ensure that the limit plate 221 will not tilt in the direction close to the pipeline assembly 12, ensure the distance between the limit plate 221 and the pipeline assembly 12, and reduce the probability of collision between the limit plate 221 and the pipeline assembly 12.

[0108] Please refer to Figures 14 to 17 In some embodiments, the phase-change thermal storage device 1000 includes a positioning component 2, and the positioning component 2 also includes a mounting structure 23. The phase-change thermal storage device 1000 has a first end 1a and a second end 1b that are opposite to each other along the first direction X. The mounting structure 23 is close to the first end 1a of the phase-change thermal storage unit 1 and connects the phase-change thermal storage unit 1 and the inner tank 100. The mounting structure 23 is located on the side of the phase-change thermal storage device 1000 close to the first end 1a, which can be easily installed from the first end 1a. The mounting structure 23 located at the first end 1a can connect the inner tank 100 and the phase-change thermal 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 thermal storage unit 1 in the inner tank 100, prevent shaking during transportation or movement, and protect the phase-change thermal storage unit 1.

[0109] Please refer to Fig.14 To, 17, the mounting structure 23 includes: a first mounting member 231, mounted on the phase change thermal storage unit 1, the first mounting member 231 includes a first mounting plate 2311, the first mounting plate 2311 is opposite to the second end 1b of the phase change thermal storage unit 1 and is spaced apart; 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.

[0110] In the embodiment of the present application, the first mounting member 231 at least includes a first mounting plate 2311, wherein the first mounting plate 2311 is opposite to the second end 1b. Since the first end 1a and the second end 1b are opposite, that is, the first mounting plate 2311 is opposite to the first end 1a, and the plate surface of the first mounting plate 2311 is arranged facing the first end 1a, and the third mounting plate 2321 of the corresponding second mounting member 232 is stacked with the first mounting plate 2311, and the two are fixedly connected. In this way, on the one hand, it is convenient to directly connect the first end 1 At a, the first mounting plate 2311 and the third mounting plate 2321 facing the first end 1a are fixedly assembled, which is simple to operate and improves the installation efficiency. On the other hand, the first mounting member 231 is connected to the phase change heat storage unit 1, and the second mounting member 232 is connected to the inner tank 100. The first mounting member 231 and the second mounting member 232 are installed in coordination, thereby ensuring that the phase change heat storage unit 1 can be fixedly assembled with the inner tank 100, and the position of the phase change heat storage device 1000 in the inner tank 100 is fixed from the first end 1a, ensuring a strong constraint relationship between the two.

[0111] 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 thermal 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 part of the 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 thermal 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 collector of the phase change thermal storage device 1000 to pass through. At this time, the first mounting plate 2311 may include a portion (corresponding to a horizontal plate) that is opposite to and spaced from the second end 1b, and a portion (corresponding to a vertical plate) that is stacked with the second mounting plate 2312, wherein the vertical plate may be provided with a through hole 2313 for the current collecting pipe of the phase change heat storage device 1000 to pass through.

[0112] Furthermore, a sealing ring 2314 is provided between a part of the structure of the pipe 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. In the actual transportation process, some collisions and vibrations are inevitable, and the sealing ring 2314 can absorb these collisions and vibrations, and has a protective effect on the manifold.

[0113] In some embodiments, the phase change thermal storage device 1000 includes two mounting structures 23, and the two mounting structures 23 are respectively arranged corresponding to the two sides of the phase change thermal storage unit 1 along the third direction Z, so as to connect the two sides of the phase change thermal storage unit 1 along the third direction Z with the inner tank 100. The two mounting structures 23 are respectively arranged corresponding to the two sides of the phase change thermal storage device 1000 along the third direction Z, so as to connect the two sides of the phase change thermal storage unit 1 along the third direction Z with the inner tank 100. The two mounting structures 23 are arranged relatively along the third direction Z, and each mounting structure 23 is used to correspond to the two sides of each phase change thermal storage unit 1 along the third direction Z, so as to increase the installation and fixing points of the phase change thermal storage unit 1 in the third direction Z, and fix the phase change thermal storage unit 1 along the two sides of the third direction Z, so as to achieve a better locking effect on the phase change thermal storage device 1000, which can effectively reduce the problem of damage to the phase change thermal storage device 1000 caused by vibration and collision during transportation and installation.

[0114] For further information, please refer to Fig. 22 and 24 The phase change thermal storage device 1000 further includes a thermal insulation layer 400, which is located between the inner liner 100 and the outer shell 300. The thermal insulation layer 400 includes a first thermal insulation layer 410 and a second thermal insulation layer 420. The first thermal insulation layer 410 is closer to the inner liner 100 than the second thermal insulation layer 420, and the hardness of the first thermal insulation layer 410 is lower than that of the second thermal insulation layer 420. It should be noted that the thermal insulation layer 40000 is used to reduce the heat loss from the inner liner 100 to the outside and improve the efficiency of energy utilization.

[0115] In some embodiments, the first insulation layer 410 includes at least one of a sponge layer and a rubber layer; and / or the second insulation layer 420 includes at least one of a vacuum insulation board and a polyurethane board. The first insulation layer 410 is made of a sponge layer or a rubber layer, which are soft and elastic, and help to adapt to the shape and slight displacement of the liner 100, thereby protecting the liner 100. The second insulation layer 420 is made of a vacuum insulation board or a polyurethane board, which have good insulation properties and high hardness, and can provide better structural stability and durability.

[0116] Please refer to Fig. 22 and 23The outer shell 300 also includes an outer plate 310, an outer top plate 320 and an outer bottom plate 330, wherein the outer plate 310 is provided with a plurality of pipe openings 311 and wire openings 312, the pipe openings 311 are used to allow a plurality of main pipes 2121 to pass through, and the wire openings 312 are used to allow the wires inside the heat exchanger 112 to pass through, and can play a certain effect of arranging the wires. In addition, the edge of the outer plate 310 is provided with a folded edge. In the embodiment of the present application, the number of the outer plates 310 is multiple, and the folded edges of each outer plate 310 are connected in sequence. The outer shell 300 is also provided with an outer support leg 340, which is connected to the outer bottom plate 330 and is used to support the outer bottom plate 330.

[0117] In addition, the phase change thermal storage unit 1 also includes a fin group, which includes a plurality of sheet-like fins, and the fins have openings for pipes to pass through; wherein the fins include aluminum sheets. The fin group includes a plurality of sheet-like fins, and the fins have openings for pipes to pass through; wherein the fins include aluminum sheets. It can be understood that the fins increase the surface area of ​​the phase change thermal 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 be transferred from the phase change thermal storage material 200 to the external environment. In addition, the aluminum sheet has good thermal conductivity, which helps to speed up the transfer of heat. In this way, the phase change thermal storage device 1000 can not only effectively store and release heat, but also reduce heat loss and improve energy utilization efficiency. The fin group can further improve the heat exchange efficiency.

[0118] In the second aspect, the application embodiment provides a HVAC system, the HVAC system includes the above-mentioned phase change heat storage device 1000, and the HVAC 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-mentioned embodiment. Since the HVAC system adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. In the description of the present invention, it should be understood that the terms center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom inside, outside, clockwise, counterclockwise, axial, radial, circumferential, etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 on the present invention.

[0119] In addition, the terms first and second are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as first and second may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of multiple is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0120] In the present invention, unless otherwise clearly specified and limited, the terms such as installation, connection, connection, fixing, etc. should be understood in a broad sense, for example, it can be fixed connection, detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0121] In the present invention, unless otherwise clearly specified and limited, a first feature above or below a second feature may mean 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, a first feature above, above, and above a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature below, below, and below a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0122] In the description of this specification, the description of reference terms such as one embodiment, some embodiments, examples, specific examples, or some examples means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples without contradiction.

[0123] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

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

2. The phase change thermal storage device (1000) according to claim 1, characterized in that: The first connecting pipeline (1211) further comprises: a charging inlet main pipe (1211c), the charging inlet main pipe (1211c) being in communication with the first main pipe (1211a); and At least two charging inlet branch pipes (1211d), each of the charging inlet branch pipes (1211d) is connected to the charging inlet main pipe (1211c), and a 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).

3. The phase change thermal 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, and the second axes of the plurality of charging inlet branch pipes (1211d) are all located in a first plane; The first axis is located in a first plane, or the first axis is located in a second plane intersecting with the first plane.

4. The phase change thermal storage device (1000) according to claim 1, characterized in that: The second connecting pipeline (1221) further comprises: a charging outlet main pipe (1221c), the charging outlet main pipe (1221c) being connected to the second main pipe (1221a); ​​and, At least two charging outlet branch pipes (1221d), each of the charging outlet branch pipes (1221d) is connected to the charging outlet main pipe (1221c), and a port at one end of each charging outlet branch pipe (1221d) away from the charging outlet main pipe (1221c) is connected to the second branch pipe (1221b).

5. The phase change thermal storage device (1000) according to claim 1, characterized in that: The charging outlet main pipe (1221c) extends along a third axis, each of the charging outlet branch pipes (1221d) extends along a fourth axis, and the fourth axes of the plurality of charging outlet branch pipes (1221d) are all located in a third plane; The third axis is located in a third plane, or the third axis is located in a fourth plane intersecting the third plane.

6. The phase change thermal storage device (1000) according to claim 1, characterized in that: It comprises a plurality of phase change heat storage units (1), The charging inlet flow path (121) further comprises a charging inlet main pipe (1213) and a charging inlet header pipe (1212); the first connecting pipes (1211) are multiple, the charging inlet header pipe (1212) is connected to the charging inlet main pipe (1213), and the multiple first main pipes (1211a) of the multiple first connecting pipes (1211) are all connected to the charging inlet header pipe (1212); The charging outlet flow path (122) further comprises a charging outlet main pipe (1222) and a charging outlet collecting pipe (1223); the second connecting pipes (1221) are multiple, the charging outlet collecting pipe (1223) is connected to the charging outlet main pipe (1222), and the multiple second main pipes (1221a) of the multiple second connecting pipes (1221) are all connected to the charging outlet collecting pipe (1223).

7. The phase change thermal 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) which are 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 header (1212), the charging outlet main pipe (1222), and the charging outlet header (1223) are located on the same side of the heat exchanger (11) along the first direction (X) and close to the first end (1a); The first main pipe (1211a) comprises a first charging inlet pipe section (1211a') and a second charging inlet pipe section (1211a") which are connected to 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 the 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 close to the first end (1a); The second main pipe (1221a) comprises a first charging outlet pipe section (1221a') and a second charging outlet pipe section (1221a") which are connected to each other. The first 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 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 close to the first end (1a). The second direction (Y) is perpendicular to the first direction (X).

8. The phase change thermal storage device (1000) according to any one of claims 1 to 7, characterized in that: The energy release flow path (112) has an energy release inlet (112a) and an energy release outlet (112b). The pipeline assembly (12) further comprises an energy release inlet flow path (123) and an energy release outlet flow path (124); the energy release inlet flow path (123) comprises a third connecting pipeline (1231); the third connecting pipeline (1231) comprises a third main pipe (1231a) and at least two third branch pipes (1231b); the third main pipe (1231a) is connected to each of the third branch pipes (1231b); each of the third branch pipes (1231b) is connected to each of the energy release flow paths (124); The energy release inlet (112a) of the energy release flow path (112) is connected, the energy release outlet flow path (124) comprises a fourth connecting pipeline (1241), the fourth connecting pipeline (1241) comprises a fourth main pipe (1241a) and at least two fourth branch pipes (1241b), the fourth main pipe (1241a) is connected to each of the fourth branch pipes (1241b), and each of the fourth branch pipes (1241b) is connected to the energy release outlet (112b) of each of the energy release flow paths (112).

9. The phase change thermal storage device (1000) according to claim 8, characterized in that: It comprises a plurality of phase change heat storage units (1), The energy release inlet flow path (123) further comprises an energy release inlet main pipe (1232) and an energy release inlet header pipe (1233); the third connecting pipelines (1231) are multiple, the energy release inlet header pipe (1233) is connected to the energy release inlet main pipe (1232), and the multiple third main pipes (1231a) of the multiple third connecting pipelines (1231) are all connected to the energy release inlet header pipe (1233); The energy release outlet flow path (124) further comprises an energy release outlet main pipe (1242) and an energy release outlet collecting pipe (1243); the fourth connecting pipes (1241) are multiple, 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).

10. The phase change thermal 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) which are opposite to each other along a first direction (X). The energy release inlet (112a) is located at the second end (1b), and the energy release outlet (112b) is located at the first end (1a). The energy release inlet main pipe (1232), the energy release inlet header (1233), the energy release outlet main pipe (1242), and the energy release outlet header (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) comprises a first energy-releasing inlet pipe section (1231a') and a second energy-releasing inlet pipe section (1231a") which are connected to each other; the first energy-releasing 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); and the second energy-releasing 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) comprises a first energy release outlet pipe section (1241a') and a second energy release outlet pipe section (1241a") which are connected to each other. The first energy release 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 energy release 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 thermal 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) which are 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 energy release flow path (112) has an energy release inlet (112a) located at the second end (1b) and an energy release outlet (112b) located at the first end (1a).

12. The phase change thermal storage device (1000) according to claim 11, characterized in that: The charging flow path (111) comprises a plurality of charging pipe sections (1111) distributed along its flow direction, and the plurality of charging pipe sections (1111) are distributed at intervals along the first direction (X); The energy release flow path (112) comprises a plurality of energy release pipe sections (1121) distributed along its flow direction, and the plurality of energy release pipe sections (1121) are distributed at intervals along the first direction (X); Wherein, along the first direction (X), two adjacent energy-charging tube sections (1111) correspond to one energy-discharging tube section (1121), and one energy-charging tube section (1111) corresponds between two adjacent energy-discharging tube sections (1121).

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

14. The phase change thermal storage device (1000) according to claim 13, characterized in that: The energy charging tube section (1111) extends along the second direction (Y), the energy discharging tube section (1121) extends along the second direction (Y), and the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

15. The phase change thermal storage device (1000) according to claim 14, characterized in that: The charging flow path (111) further comprises a charging connecting pipe (1112) connected between two adjacent charging pipe sections (1111) along the flow direction thereof, and the two adjacent charging connecting pipes (1112) are located on opposite sides of the plurality of charging pipe sections (1111) along the second direction (Y); And / or, the energy release flow path (112) further comprises an energy release connecting pipe (1122) connected between two adjacent energy release pipe segments (1121) along its flow direction, and the two adjacent energy release connecting pipes (1122) are located on opposite sides of the plurality of energy release pipe segments (1121) along the second direction (Y).

16. The phase change thermal 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 an aluminum tube, an aluminum alloy tube, a copper tube, a copper alloy tube and a stainless steel tube; and / or, The third connecting pipeline (1231) and the fourth connecting pipeline (1241) include any one of a copper tube, a copper alloy tube and a stainless steel tube; and / or, The charging flow path (111) and the discharging flow path (112) include any one of a copper tube and a copper alloy tube; and / or, The energy charging inlet main pipe (1213), the energy charging inlet collecting pipe (1212), the energy charging outlet main pipe (1222), the energy charging outlet collecting pipe (1223), the energy discharging inlet main pipe (1232), the energy discharging inlet collecting pipe (1233), the energy discharging outlet main pipe (1242), and the energy discharging outlet collecting pipe (1243) comprise stainless steel pipes.

17. The phase change thermal storage device (1000) according to claim 1, characterized in that: The phase-change heat storage device (1000) further comprises a positioning assembly (2), wherein the positioning assembly (2) comprises a fixing structure (21), wherein the fixing structure (21) extends along a third direction (Z) and is fixedly connected to the plurality of phase-change heat storage units (1).

18. The phase change thermal storage device (1000) according to claim 17, characterized in that: The fixing structure (21) comprises: Two top connecting members (211) are connected to the tops of the plurality of phase-change thermal storage units (1), and the top connecting members (211) are arranged opposite to each other along the second direction (Y); and Two bottom connecting members (212) are connected to the bottoms of the plurality of phase-change heat storage units (1), and the bottom connecting members (212) are arranged opposite to each other along the second direction (Y).

19. The phase change thermal storage device (1000) according to claim 18, characterized in that: The top connecting member (211) comprises: A first connecting plate (222), comprising a main plate (2111a) extending along the third direction (Z) and a plurality of mounting plates extending along the first direction (X) and arranged at intervals along the third direction (Z), each mounting plate being connected to the top of the phase change thermal storage unit (1); A second connecting plate (222), the second connecting plate (222) extends along the first direction (X), the second connecting plate (222) is connected to the main board (2111a), and the second connecting plate (222) is provided with hanging holes (2112a) at intervals along the third direction (Z).

20. The phase change thermal storage device (1000) according to claim 1, characterized in that: The phase change heat storage device (1000) further comprises: Phase change thermal storage material (200); An inner liner (100), the inner liner (100) having a containing space, a plurality of the phase change heat storage units (1) and the phase change heat storage material (200) being located in the containing space; and An outer shell (300), wherein the outer shell (300) is sleeved onto the outside of the inner shell (100).

21. The phase change thermal storage device (1000) according to claim 20, characterized in that: The phase-change heat storage device (1000) further comprises a positioning assembly (2), the positioning assembly (2) further comprising a limiting assembly, the phase-change heat storage unit (1) having a first end (1a) and a second end (1b) opposite to each other along a first direction (X), the limiting assembly being mounted on the second end (1b) of the phase-change heat storage unit (1).

22. The phase change thermal storage device (1000) according to claim 21, characterized in that: The limiting assembly comprises two limiting members (22) arranged opposite to each other along a second direction (Y), at least a portion of each limiting member (22) protrudes from the phase-change heat storage unit (1) along the second direction (Y), and the first direction (X) and the second direction (Y) are perpendicular.

23. The phase change thermal storage device (1000) according to claim 22, characterized in that: The limiting member (22) comprises: a limiting plate (221) protruding from the phase-change heat storage unit (1) along the second direction (Y); the limiting plate (221) being arranged 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).

24. The phase change thermal storage device (1000) according to claim 23, characterized in that: The connecting plate (222) comprises: A connecting bottom plate (2221) connected to an end of the limiting plate (221) close to the second end (1b) and extending in a direction close to the phase change heat storage unit (1); A connecting side plate (2222) is connected to an end of the connecting bottom plate (2221) away from the limiting plate (221) and extends in a direction away from the second end (1b); the connecting side plate (2222) is connected to the phase change heat storage unit (1).

25. The phase change thermal storage device (1000) according to claim 24, characterized in that: The connecting side plate (2222) is provided with a connecting hole (2222a) extending along the second direction (Y), and the connecting side plate (2222) is connected to the phase change heat storage unit (1) via a locking piece passing through the connecting hole (2222a); The limiting plate (221) is provided with an avoidance hole (221a) corresponding to the connection hole (2222a).

26. The phase change thermal storage device (1000) according to claim 23, characterized in that: The limiting member (22) further comprises: A transition plate (223) connects the limiting plate (221) and the connecting plate (222); the transition plate (223) is arranged at an obtuse angle relative to the limiting plate (221) and the connecting plate (222).

27. The phase change thermal storage device (1000) according to claim 20, characterized in that: The phase-change heat storage device (1000) further comprises a positioning assembly (2), the positioning assembly (2) further comprising a mounting structure (23), the phase-change heat storage unit (1) having a first end (1a) and a second end (1b) opposite to each other along a first direction (X), the mounting structure (23) being close to the first end (1a) of the phase-change heat storage unit (1) and connecting the phase-change heat storage unit (1) and the inner tank (100).

28. The phase change thermal storage device (1000) according to claim 27, characterized in that: The mounting structure (23) comprises: A first mounting member (231) mounted on the phase-change heat storage unit (1), the first mounting member (231) comprising a first mounting plate (2311), the first mounting plate (2311) being arranged opposite to and spaced from the second end (1b) of the phase-change heat storage unit (1); A second mounting member (232) is mounted on the inner wall of the inner tank (100), and the second mounting member (232) includes a third mounting plate (2321), and 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).

29. The phase change thermal storage device (1000) according to claim 28, characterized in that: The mounting structure (23) comprises: A first mounting member (231) comprises a first mounting plate (2311) and a second mounting plate (2312) connected to the first mounting plate (2311), wherein the first mounting plate (2311) is connected to the inner tank (100), and the second mounting plate (2312) is connected to the phase-change thermal 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 part of the structure of the pipeline assembly (12) to pass through.

30. The phase change thermal storage device (1000) according to claim 29, characterized in that: 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).

31. The phase change thermal storage device (1000) according to claim 30, characterized in that: The phase-change heat storage device (1000) comprises two mounting structures (23), the two mounting structures (23) being respectively arranged corresponding to two sides of the phase-change heat storage unit (1) along the third direction (Z), and being used to respectively connect the two sides of the phase-change heat storage unit (1) along the third direction (Z) to the inner tank (100).

32. The phase change thermal storage device (1000) according to claim 30, characterized in that: The phase-change heat storage device (1000) further comprises a heat-insulating layer (400), the heat-insulating layer (400) being located between the inner liner (100) and the outer shell (300), the heat-insulating layer (400) comprising a first heat-insulating layer (410) and a second heat-insulating layer (420), the first heat-insulating layer (410) being closer to the inner liner (100) than the second heat-insulating layer (420), and the hardness of the first heat-insulating layer (410) being lower than the hardness of the second heat-insulating layer (420).

33. The phase change thermal storage device (1000) according to claim 32, characterized in that: The first thermal insulation layer (410) comprises at least one of a sponge layer and a rubber layer; And / or, the second thermal insulation layer (420) includes at least one of a vacuum thermal insulation board and a polyurethane board.

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

35. A HVAC system, characterized in that: It comprises the phase change thermal storage device (1000) according to any one of claims 1 to 34.

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