Energy storage unit and heating and ventilation system

Abstract

The embodiment of the invention provides an energy storage unit and a heating and ventilation system, and relates to the technical field of heating and ventilation systems, the energy storage unit externally communicates with an energy unit and a first utilization unit, the energy storage unit comprises an inner container, a heat preservation layer and a shell, the inner container is provided with a heat exchange module and an energy storage material, and the heat exchange module externally communicates with the energy unit and the first utilization unit; the energy storage material is in heat conduction connection with the heat exchange module, the heat preservation layer is attached to the outer surface of the inner container, and the shell covers the outer side of the heat preservation layer, so that the loss of energy in the energy storage material in the inner container and the heat exchange module can be reduced through the heat preservation layer.

Description

Technical Field

[0001] The present application relates to the technical field of HVAC systems, and in particular to an energy storage unit and a HVAC system. Background Art

[0002] Phase change energy storage devices have the advantages of small size, large storage capacity and no dead water. When they are connected to heat pumps to form household hot water heating equipment, they have great application prospects. However, in the related art, the heat preservation effect of phase change energy storage devices is not ideal, so there is a problem of energy loss. Summary of the invention

[0003] The present application provides an energy storage unit and a HVAC system, which can reduce energy loss by setting a thermal insulation layer.

[0004] In a first aspect, an embodiment of the present application provides an energy storage unit, which is externally connected to an energy unit and a first utilization unit, and the energy storage unit includes:

[0005] The inner liner has a heat exchange module and an energy storage material, the heat exchange module is externally connected to the energy unit and the first utilization unit, and the energy storage material is thermally connected to the heat exchange module;

[0006] A thermal insulation layer attached to the outer surface of the liner;

[0007] The outer shell covers the outside of the insulation layer.

[0008] In some embodiments, the thermal insulation layer includes a first sub-insulation layer and a second sub-insulation layer, and the first sub-insulation layer is closer to the inner container than the second sub-insulation layer;

[0009] The hardness of the first sub-insulation layer is smaller than the hardness of the second sub-insulation layer, and the thermal insulation coefficient of the first sub-insulation layer is higher than the thermal insulation coefficient of the second sub-insulation layer.

[0010] In some embodiments, the first sub-insulation layer includes at least one of a sponge layer and a rubber layer;

[0011] And / or, the second sub-insulation layer includes at least one of a vacuum insulation board and a polyurethane board.

[0012] In some embodiments, the insulation layer further comprises:

[0013] The third sub-insulation layer is arranged between the second sub-insulation layer and the shell, and the hardness of the third sub-insulation layer is less than that of the second sub-insulation layer.

[0014] In some embodiments, the liner comprises:

[0015] Inner liner shell, the thermal insulation layer covers the outer surface of the inner liner shell;

[0016] The heat exchange module is installed in the inner shell;

[0017] The energy storage material is filled in the inner shell and submerges at least a portion of the heat exchange module.

[0018] In some embodiments, the inner shell includes a first end shell, a second end shell and a side shell, the side shell is arranged to form an inner shell space, the first end shell covers the upper side of the inner shell space along the gravity direction, and the second end shell covers the lower side of the inner shell space along the gravity direction;

[0019] The energy storage material is filled in the inner container space and is spaced apart from the first end shell.

[0020] In some embodiments, the insulation layer includes a first insulation layer, a second insulation layer and a third insulation layer, the first insulation layer is attached to the first end shell, the second insulation layer is attached to the second end shell, and the third insulation layer is attached to the outer surface of the side shell.

[0021] In some of the embodiments, a first supporting portion is disposed on the lower surface of the second end shell, and the first supporting portion is supported on the bottom wall of the outer shell.

[0022] In some embodiments, the first support portion includes:

[0023] A first plate portion is attached to the outer surface of the second end shell;

[0024] Two groups of first supporting feet are provided, and the two groups of first supporting feet are respectively provided at the edges of the first plate portion along the first direction and supported on the bottom wall of the shell;

[0025] The first plate portion has a second plate portion at an edge along the second direction, the second plate portion, the first supporting leg and the first plate portion form a first limiting space, and part of the second thermal insulation layer is located in the first limiting space;

[0026] The first direction and the second direction are perpendicular to each other.

[0027] In some embodiments, the second thermal insulation layer includes a first sub-insulation layer and a second sub-insulation layer, the first sub-insulation layer is at least partially located in the first confined space, the second sub-insulation layer is located outside the first confined space and attached to the first sub-insulation layer, and there is a gap between the lower surface of the second sub-insulation layer and the bottom wall of the outer shell.

[0028] In some of the embodiments, the outer surface of the inner liner has a ridge, and the ridge is embedded in the first sub-insulation layer.

[0029] In some embodiments, the raised portion includes a plate body and a vertical edge formed by bending the plate body.

[0030] In some of the embodiments, a second supporting portion is disposed on the outer surface of the first end shell, a second limiting space is formed on the second supporting portion, and the first thermal insulation layer is located in the second limiting space.

[0031] In some embodiments, the second support portion includes:

[0032] A first connecting portion, attached to the outer surface of the first end shell;

[0033] The middle part is connected to the first connecting part and extends in the opposite direction of the gravity direction. A second limiting space is formed between the middle part, the first connecting part and the first end shell.

[0034] In some embodiments, the second support portion further comprises:

[0035] A second connection portion is connected to a side of the middle portion away from the first connection portion, the second connection portion is parallel to the first connection portion, and forms a third limiting space with the middle portion;

[0036] The third thermal insulation layer is arranged in the third limiting space, and the third thermal insulation layer is in contact with the middle portion and the second connecting portion.

[0037] In some embodiments, the second support portion further comprises:

[0038] A third connection portion is connected to a side of the second connection portion away from the middle portion, and the third connection portion is parallel to the middle portion;

[0039] The inner surface of the shell is provided with a hanging portion, and the third connecting portion is clamped with the hanging portion.

[0040] In some embodiments, the outer shell includes multiple outer shells, an outer top cover and an outer bottom plate, the outer top cover is arranged on the upper side of the inner shell along the direction of gravity and connected to one side of the outer shell, the outer bottom plate is arranged on the lower side of the inner shell along the direction of gravity and connected to the other opposite side of the outer shell, wherein the inner surface of the outer shell has a hanging portion.

[0041] In some embodiments, the outer shell includes an outer shell body and a first bent portion formed by bending the outer shell body, and the first bent portion of one of two adjacent outer shells is connected to the outer shell body of the other of the two outer shells via fasteners.

[0042] In some embodiments, the second thermal insulation layer forms an escape area at the corresponding first bending portion, and the escape area extends along the third direction.

[0043] In some embodiments, the first bent portion of at least one of the two adjacent outer shells is bent away from the outer shell body to form a second bent portion, and the second bent portion extends toward the avoidance area and is disposed opposite to the fastener.

[0044] In some embodiments, the outer chassis includes an outer chassis plate body and a vertical plate formed by bending the outer chassis plate body, the vertical plate is attached to the outer shell, and along the third direction, the edge of the vertical plate does not exceed the edge of the outer shell;

[0045] And / or, the outer surface of the outer chassis has outer supporting feet.

[0046] In some of the embodiments, at least one of the plurality of outer shells and the outer top cover is provided with a pipe hole, and the pipe hole is used for extending a pipe connected with the heat exchange module.

[0047] In some embodiments, the heat exchange module comprises:

[0048] A plurality of sub-heat exchange modules, the plurality of sub-heat exchange modules are arranged in parallel and spaced apart along a first direction, the top of the sub-heat exchange module and the bottom of the sub-heat exchange module are arranged opposite to each other along a third direction, each sub-heat exchange module has a plurality of heat exchange flow paths, each heat exchange flow path extends along the third direction to form a plurality of curved loops, the plurality of curved loops are bent back and forth along the second direction, wherein the first direction, the second direction and the third direction are arranged perpendicular to each other;

[0049] The pipeline structure includes a collecting pipe and multiple delivery pipes. The collecting pipe is arranged on the top of multiple sub-heat exchange modules and penetrates the inner tank. One end of the delivery pipe is connected to the collecting pipe, and the other end of the delivery pipe is connected to the corresponding heat exchange flow path.

[0050] In some embodiments, each sub-heat exchange module is a tube-fin heat exchanger, each sub-heat exchange module has a plurality of tube fins arranged in rows along the second direction, and each heat exchange flow path passes through the plurality of tube fins along the second direction.

[0051] In some embodiments, the inner tank further has a mounting structure, the mounting structure connecting a plurality of sub-heat exchange modules spaced apart along a first direction, the mounting structure comprising:

[0052] A first connecting member is disposed at the bottom of the sub-heat exchange module, and the first connecting member includes a first plate body and a plurality of first fixing portions disposed on the first plate body, the plurality of first fixing portions are spaced apart along a first direction, and the first fixing portions are connected to the corresponding sub-heat exchange module; and,

[0053] The second connecting member is arranged on the top of the sub-heat exchange module, and the second connecting member includes a second plate body and a plurality of second fixing parts arranged on the second plate body, the plurality of second fixing parts are arranged at intervals along the first direction, and the second fixing parts are connected to the corresponding sub-heat exchange module.

[0054] In some embodiments, the liner further has a protective structure, the protective structure connects a plurality of sub-heat exchange modules arranged at intervals along the first direction, and the protective structure includes:

[0055] The third connecting member is arranged at the bottom of the sub-heat exchange module, and the third connecting member includes a third plate body and a plurality of third fixing parts arranged on the third plate body, the plurality of third fixing parts are arranged at intervals along the first direction, the third fixing parts are connected to the corresponding sub-heat exchange module, and the third plate body is protruded from the heat exchange flow path along the second direction.

[0056] In some of the embodiments, the inner tank also has at least two pipe fixing structures, which are arranged on the top of multiple sub-heat exchange modules and are spaced apart on opposite sides of the heat exchange modules along a first direction. The collecting pipe extends along the first direction, and both ends of the collecting pipe are respectively connected to the two pipe fixing structures.

[0057] In some embodiments, the pipeline fixing structure includes a mounting plate and a plurality of mounting portions connected to the mounting plate, wherein the plurality of mounting portions are arranged at intervals along the second direction and protrude from the heat exchange module along the first direction;

[0058] The inner tank includes two side shells spaced apart along a first direction, one side of the other side shell opposite to the two side shells has a mounting fitting portion, and the mounting fitting portion is connected to the corresponding mounting portion to form a gap between the heat exchange module and the side shells.

[0059] In some embodiments, the multiple heat exchange flow paths of the sub-heat exchange module include at least one charging flow path and at least one discharging flow path, the charging flow path and the energy unit are located on the same charging circuit, and the discharging flow path and the first utilization unit are located on the same discharging circuit.

[0060] In some of the embodiments, the multiple heat exchange flow paths of the sub-heat exchange module include multiple charging flow paths and multiple discharging flow paths, and the charging circuits and the discharging circuits are alternately arranged along the first direction.

[0061] In some of the embodiments, both the charging flow path and the discharging flow path are arranged as pipelines;

[0062] At least one of the charging flow path and the discharging flow path comprises a copper tube, a copper alloy tube or a stainless steel tube;

[0063] Alternatively, the charging flow path includes an aluminum tube, and the discharging flow path includes a stainless steel tube.

[0064] In some embodiments, the collecting pipe includes a charging inlet pipe, a charging outlet pipe, a discharging inlet pipe and an discharging outlet pipe. The charging inlet pipe, the charging outlet pipe, the discharging inlet pipe and the discharging outlet pipe are arranged at intervals along the second direction and are correspondingly connected with a delivery pipe, and the other end of the delivery pipe is in flow with the corresponding charging flow path and the discharging flow path.

[0065] In some embodiments, the delivery pipe includes a charging branch pipe, a charging discharging pipe, a discharging branch pipe and an discharging discharging pipe, and multiple charging branch pipes, multiple charging discharging pipes, multiple discharging branch pipes and multiple discharging discharging pipes are all distributed at intervals along the first direction.

[0066] In some embodiments, the charging branch pipe includes a first pipe section and a second pipe section, along the second direction, one of the first pipe section and the second pipe section is located on a first vertical plane, the other of the first pipe section and the second vertical plane, and the discharging branch pipe is located on the first vertical plane or the second vertical plane;

[0067] Or, the energy discharge branch pipe includes a first pipe section and a second pipe section, along the second direction, one of the first pipe section and the second pipe section is located on the first vertical plane, the other of the first pipe section and the second vertical plane, and the energy charging branch pipe is located on the first vertical plane or the second vertical plane;

[0068] The first vertical plane is not coplanar with the second vertical plane.

[0069] In some embodiments, along the second direction, the energy charging branch tube and the energy discharging branch tube are closer to the inner tank than the energy charging branch tube and the energy discharging branch tube.

[0070] In some embodiments, the inner container further has at least two temperature sensing modules, each of which includes a probe, one of which extends along the third direction into the bottom of the energy storage material, and the other of which extends along the third direction into the top of the energy storage material;

[0071] Wherein, the probes in at least two temperature sensing modules are located between two adjacent sub-heat exchange modules.

[0072] In some embodiments, the temperature sensing module further comprises:

[0073] A support plate, fixed relative to the heat exchange module, and the support plate has an assembly hole; and

[0074] A blind tube, inserted into the assembly hole and used to extend into the energy storage material, wherein the inner wall surface of the blind tube is provided with a positioning structure;

[0075] Wherein, the probe cooperates with the positioning structure to limit a preset depth of the probe inserted into the energy storage material.

[0076] In some embodiments, the positioning structure includes a positioning protrusion disposed on the inner wall surface of the blind tube, and the probe is engaged or abutted against the positioning protrusion.

[0077] In some embodiments, the temperature sensing module also includes a sensor wire body, wherein a portion of the sensor wire body is inserted into the blind tube and connected to the probe, and an in-position indicator is provided on the outer wall surface of the sensor wire body. When the probe cooperates with the positioning structure, the in-position indicator is located at the pipe mouth of the blind tube.

[0078] In some embodiments, the temperature sensing module further includes a connector, which is disposed at the pipe mouth of the blind tube, the sensor wire is passed through the connector and inserted into the blind tube, and the connector is used to lock or loosen the sensor wire.

[0079] In a second aspect, an embodiment of the present application provides a HVAC system, including:

[0080] Energy unit;

[0081] a first utilization unit; and

[0082] In the energy storage unit mentioned above, the energy storage unit is connected to the energy unit through a charging circuit, and the energy storage unit is connected to the first utilization unit through a discharging circuit, and the charging circuit and the discharging circuit are staggered.

[0083] In some embodiments, the energy unit comprises:

[0084] A main heat source unit is connected to the energy storage unit through a charging circuit, and the main heat source unit includes a solar heat collection module, a water source heat exchange module, and an air source heat exchange module; and

[0085] The auxiliary heat source unit is connected to the energy storage unit through a charging circuit, and the main heat source unit includes an electric heating module.

[0086] In some of the embodiments, a second utilization unit is further included, the energy unit is connected to the second utilization unit via a heat transfer pipeline, and the heat transfer pipeline is connected in parallel with the charging circuit.

[0087] In some embodiments, the HVAC system has:

[0088] A first working mode, when the HVAC system is in the first working mode, the energy unit provides heat to the energy storage material, and the first utilization unit absorbs the heat of the energy storage material; and

[0089] The second working mode, when the HVAC system is in the second working mode, the energy unit provides heat to the second utilization unit.

[0090] The embodiment of the present application provides a thermal insulation layer between the inner liner and the outer shell, so that the thermal insulation layer can reduce the energy loss in the energy storage material in the inner liner and the heat exchange module. BRIEF DESCRIPTION OF THE DRAWINGS

[0091] 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0092] Figure 1 A schematic diagram of the structure of a HVAC system provided in an embodiment of the present application;

[0093] Figure 2 A schematic diagram of the three-dimensional structure of an energy storage unit provided in an embodiment of the present application;

[0094] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at HH in the middle;

[0095] Figure 4 An exploded diagram of an energy storage unit provided in an embodiment of the present application;

[0096] Figure 5 A schematic diagram of the structure of the inner container provided in an embodiment of the present application;

[0097] Figure 6 A schematic diagram of the explosion structure of the inner container provided in an embodiment of the present application;

[0098] Figure 7 for Figure 3 The enlarged view of point B in the middle;

[0099] Figure 8 for Figure 3 Enlarged view of point C in the middle;

[0100] Fig. 9 for Figure 3 The enlarged view of point A in the middle;

[0101] Fig.10 for Figure 4 The enlarged view of F in the middle;

[0102] Fig.11 for Figure 4 The enlarged view of D and E in the middle;

[0103] Fig.12 A schematic diagram of the structure of a heat exchange module provided in an embodiment of the present application;

[0104] Fig.13 for Fig.12 A schematic structural diagram of the heat exchange module from another perspective shown;

[0105] Fig.14A schematic diagram of the split structure of multiple sub-heat exchange modules, a first connector and a second connector provided in an embodiment of the present application;

[0106] Fig.15 A schematic diagram of a structure in which a plurality of heat exchange sub-modules provided in an embodiment of the present application are connected together through a mounting structure;

[0107] Fig.16 A schematic diagram of the split structure of multiple heat exchange sub-modules, a protective structure and a first connecting member provided in an embodiment of the present application;

[0108] Fig.17 A schematic diagram of the disassembled structure of the pipeline fixing structure provided in an embodiment of the present application;

[0109] Fig.18 A schematic diagram of the structure of the pipeline structure provided in the embodiment of the present application;

[0110] Fig.19 A schematic diagram of the structure of the heat exchange flow path distribution provided in one embodiment of the present application;

[0111] Fig. 20 A schematic diagram of the structure of the delivery pipe distribution provided in one embodiment of the present application;

[0112] Fig.21 for Fig. 20 Enlarged view of G in the middle;

[0113] Fig. 22 A schematic diagram showing a structure in which a temperature sensing module is provided inside an energy storage unit provided in an embodiment of the present application;

[0114] Fig.23 A schematic diagram of the structure of a temperature sensing module provided in an embodiment of the present application;

[0115] Fig.24 for Fig.23 Schematic diagram of the cross-sectional structure at the middle PP;

[0116] Fig.25 for Fig.24 Schematic diagram of the enlarged structure at J in the middle;

[0117] Fig.26 for Fig.24 Schematic diagram of the enlarged structure at K in the middle.

[0118] Description of reference numerals:

[0119] 1000. Energy storage unit;

[0120] 100, liner; 100a, liner space; 110, first end shell; 111, second support portion; 111a, second limited space; 111b, third limited space; 1111, first connecting portion; 1112, middle portion; 1113, second connecting portion; 1114, third connecting portion; 120, second end shell; 121, first support portion; 121a, first limited space; 1211, first plate portion; 1212, first support leg; 1213, second plate portion; 130, side shell; 131, mounting fitting portion; 140, raised portion; 141, plate body portion; 142, vertical edge;

[0121] 200, heat exchange module; 210, sub-heat exchange module; 210a, heat exchange flow path; 211a, charging flow path; 212a, discharging flow path; 220, pipeline structure; 221, collecting pipe; 2211, charging inlet pipe; 2212, charging outlet pipe; 2213, discharging inlet pipe; 2214, discharging outlet pipe; 222, delivery pipe; 2221, charging branch inlet pipe; 2222, charging outlet pipe; 2223, discharging branch inlet pipe; 22231, first pipe section; 22232, second pipe section; 2224, discharging outlet pipe; 223, three-way pipe connection;

[0122] 300, insulation layer; 300a, avoidance area; 310, first sub-insulation layer; 320, second sub-insulation layer; 330, first insulation layer; 340, second insulation layer; 350, third insulation layer;

[0123] 400, outer shell; 400a, pipe hole; 410, hanging part; 411, outer shell; 4111, outer shell body; 4112, first bending part; 4113, second bending part; 412, outer top cover; 413, outer chassis; 4131, outer chassis plate; 4132, vertical plate; 4133, outer supporting foot;

[0124] 500, mounting structure; 510, first connecting member; 511, first plate; 512, first fixing portion; 520, second connecting member; 521, second plate; 522, second fixing portion;

[0125] 600, protective structure; 610, third connecting member; 611, third plate; 611a, avoidance hole; 612, third fixing part;

[0126] 700, pipeline fixing structure; 710, mounting plate; 720, mounting part;

[0127] 800, temperature sensor module; 810, probe; 820, support plate; 830, blind tube; 831, positioning convex block; 840, sensor line body; 841, in-position indicator; 850, connector; 851, base; 851a, first through hole; 852, fastening head; 852a, second through hole; 860, sealing member;

[0128] 900. Energy storage materials;

[0129] 2000, energy unit; 2000a, charging circuit;

[0130] 3000, first utilization unit; 3000a, energy release circuit;

[0131] 4000, second utilization unit; 4000a, heat transfer pipeline;

[0132] XX, first direction; YY, second direction; ZZ, third direction; M, first vertical plane; N, second vertical plane. DETAILED DESCRIPTION

[0133] 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.

[0134] In the phase change energy storage unit, the heat source unit is used to exchange heat for the energy storage material, the energy storage material stores the heat, and then transfers the heat to the utilization unit through heat exchange. However, in this process, if there is no insulation, or the insulation material fails to completely cover the inner tank, the heat stored in the energy storage material will be lost, and at the same time, the heat of the heat exchange module will be lost.

[0135] Based on this, see Figure 1 The embodiment of the present application provides an energy storage unit 1000 having an energy unit 2000 and a first utilization unit 3000 that can be connected to the outside, and is used to improve the energy loss of the energy storage material 900 and the heat exchange module 200. The energy unit 2000 is mainly a heat source module that provides a heat source, such as an electric heating module, a solar heating module, a water source heat exchange module, and an air source heat exchange module, and the first utilization unit 3000 can be a water unit, or other units that need heat, such as a heating unit.

[0136] Specifically, see Figure 2-4 The energy storage unit 1000 in the embodiment of the present application includes an inner liner 100 , a thermal insulation layer 300 and an outer shell 400 .

[0137] The inner liner 100 has a heat exchange module 200 and an energy storage material 900 inside. The inner liner 100 is used to protect the energy storage material 900 and the heat exchange module 200. The inner liner 100 can be a cubic structure or a cylindrical structure. In this application, the inner liner 100 is described as a cubic structure. The heat exchange module 200 is externally connected to the energy unit 2000 and the first utilization unit 3000. The energy storage material 900 is thermally connected to the heat exchange module 200, that is, the heat exchange between the energy unit 2000 and the energy storage material 900, and the heat exchange between the energy storage material 900 and the first utilization unit 3000 are all performed inside the inner liner 100.

[0138] The thermal insulation layer 300 is attached to the outer surface of the inner liner 100 , which can reduce the amount of energy located in the inner liner 100 flowing outside the inner liner 100 , improve the storage efficiency and usage time of thermal energy, and thus improve the energy loss problem of the energy storage unit 1000 .

[0139] The outer shell 400 covers the outside of the insulation layer. The outer shell 400 serves as an appearance component of the entire energy storage unit 1000 and can protect the insulation layer and the inner liner 100 located inside the outer shell 400. Based on the fact that the inner liner 100 is in a cubic shape, in the embodiment of the present application, the entire outer shell 400 can also be in a cubic shape. At the same time, the outer shell 400 also provides necessary mechanical support, thereby enhancing the overall strength and durability of the energy storage unit 1000.

[0140] For further information, please refer to Figure 3 In order to improve the thermal insulation effect of the energy storage unit 1000 , the thermal insulation layer includes a first sub-insulation layer 310 and a second sub-insulation layer 320 . The first sub-insulation layer 310 is closer to the inner liner 100 than the second sub-insulation layer 320 .

[0141] Since the energy storage material 900 and the heat exchange module 200 can occupy most of the space inside the liner 100, and since the energy storage material 900 is a phase change material, a change in state will occur. Based on this, the pressure-bearing capacity of the liner 100 is required to be relatively high. In the existing solutions, most of the ribs are provided with some raised or grooved reinforcing ribs on the outer surface of the liner 100 to strengthen the rigidity of the liner 100. In the prior art, the hardness of the insulation material with a low insulation coefficient is generally large, such as vacuum insulation board and polyurethane board, etc., and the raised or grooved reinforcing ribs on the outer surface of the liner 100 may pierce the insulation material, thereby reducing the insulation effect or even causing failure. Therefore, in the embodiment of the present application, in order to ensure that the insulation layer can continuously have a good insulation effect, in the embodiment of the present application, the hardness of the first sub-insulation layer 310 is less than the hardness of the second sub-insulation layer 320, and the insulation coefficient of the first sub-insulation layer 310 is higher than the insulation coefficient of the second sub-insulation layer 320.

[0142] In this way, the first sub-insulation layer 310 with a smaller hardness is difficult to be punctured by the reinforcement ribs of the protrusions or grooves on the outer surface of the inner liner 100, so that the first sub-insulation layer 310 still has the insulation function, and the second sub-insulation layer 320 does not contact the reinforcement ribs of the protrusions or grooves on the outer surface of the inner liner 100, and can also ensure the insulation function. Therefore, in the embodiment of the present application, through the setting of the first insulation layer 330 and the second insulation layer 340, it is possible to take into account the rigidity of the inner liner 100 while taking into account the insulation performance of the entire energy storage unit 1000.

[0143] Specifically, in the embodiment of the present application, the first sub-insulation layer 310 can be a sponge layer, a rubber layer, or a mixture of sponge and rubber. When the first sub-insulation layer 310 is a sponge layer or a rubber layer, when the raised or grooved reinforcing ribs on the outer surface of the inner liner 100 contact or squeeze the first sub-insulation layer 310, the first sub-insulation layer 310 can still have the insulation function. In addition, the raw materials of sponge and rubber are easy to obtain and the cost is low.

[0144] The second sub-insulation layer 320 can be a vacuum insulation board, a polyurethane board, or a combination of the vacuum insulation board or the polyurethane board. In order to facilitate the bonding of the outer shell 400 and the second sub-insulation layer 320 together, the second sub-insulation layer 320 is preferably a vacuum insulation board, i.e., a VIP board (Vacuum Insulation Panel). The VIP board has the advantages of low thermal conductivity, small size, light weight, etc., and has a flat surface, high hardness, and cannot be bent. It can be bonded to the outer shell 400 to ensure the stability of the entire insulation layer.

[0145] Of course, it can be understood that in the embodiments of this application, please refer to Figure 5 and Figure 6 The outer surface of the inner liner 100 has a raised portion 140, which is preferably a reinforcing rib. The inner liner 100 is made of stainless steel. The stainless steel inner liner 100 will expand when heated. By setting the reinforcing ribs, the rigidity and stability of the stainless steel inner liner 100 can be increased. The main function of the reinforcing ribs is to resist the deformation force generated by the stainless steel inner liner 100 when it expands due to heat.

[0146] See also Figure 7 The raised portion 140 is embedded in the first sub-insulation layer 310. Specifically, the raised portion 140 is a reinforcing rib, and the reinforcing rib is generally welded to the inner liner 100. Some welding slag may remain after welding, which is difficult to clean. The residual welding slag is difficult to contact with the second insulation layer 340 under the covering effect of the first insulation layer 330, thereby ensuring the insulation effect of the second insulation layer 340.

[0147] For further information, see Figure 7The raised portion 140 includes a plate body portion 141 and a vertical edge 142 formed by bending the plate body portion 141. The existence of the vertical edge 142 can enhance the structural strength of the entire raised portion 140, thereby enabling the liner 100 to better resist deformation and damage when subjected to external forces.

[0148] In some possible embodiments, the insulation layer 300 also includes a third sub-insulation layer (not shown in the figure), which is arranged between the second sub-insulation layer 320 and the outer shell 400. The hardness of the third sub-insulation layer is less than the hardness of the second sub-insulation layer 320. The third sub-insulation layer can be a sponge layer, a rubber layer, or a mixture of sponge and rubber. It can protect the second sub-insulation layer 320 together with the first sub-insulation layer 310.

[0149] In the embodiments of this application, please continue to refer to Figure 3 The inner liner 100 includes an inner liner shell, the heat exchange module 200 is installed in the inner liner shell, the energy storage material 900 is filled in the inner liner shell and submerges at least part of the heat exchange module 200, the inner liner shell is used to protect the energy storage material 900 and the heat exchange module 200, and serves as the first layer of insulation, and the insulation layer 300 covers the outer surface of the inner liner shell, which can further improve the insulation effect of the inner liner 100, thereby reducing the energy loss in the inner liner shell.

[0150] See also Figure 5-6 In the embodiment of the present application, the inner shell includes a first end shell 110, a second end shell 120 and a side shell 130. The side shell 130 is arranged to form an inner shell space 100a. The first end shell 110 covers the upper side of the inner shell space 100a along the gravity direction, and the second end shell 120 covers the lower side of the inner shell space 100a along the gravity direction. The split design allows each part of the inner shell to be manufactured and transported separately, and then assembled. For example, after the second end shell 120 and the side shell 130 are installed, the heat exchange module 200 and the energy storage material 900 can be installed in the inner shell space 100a, and then the first end shell 110 can be installed at last. This modular design not only simplifies the manufacturing process, but also reduces transportation costs. At the same time, when maintenance or replacement of parts is required, it can also be operated more conveniently, thereby improving maintenance efficiency.

[0151] The energy storage material 900 is filled in the inner space 100a of the inner shell and is spaced apart from the first end shell 110. Figure 3 As shown, when the energy storage material 900 changes state, the inner liner space 100a has enough space to accommodate the energy storage material 900 whose volume changes due to the state change, thereby reducing the risk of excessive pressure on the inner liner shell and causing the inner liner shell to rupture.

[0152] Based on the split design of the inner shell, in order to facilitate the thermal insulation layer 300 to fit the inner shell, the air gap between the thermal insulation layer 300 and the inner shell is reduced, thereby ensuring the thermal insulation effect. In the embodiment of the present application, please continue to refer to Figure 7-9 The insulation layer 300 includes a first insulation layer 330, a second insulation layer 340 and a third insulation layer 350. The first insulation layer 330 is attached to the first end shell 110, the second insulation layer 340 is attached to the second end shell 120, and the third insulation layer 350 is attached to the outer surface of the side shell 130. In this way, the split design of the insulation layer 300 reduces the stress concentration problem that may be caused by the complexity of the overall structure, and reduces the risk of damage caused by long-term use or accidental impact. At the same time, the independent attachment of the first insulation layer 330, the second insulation layer 340 and the third insulation layer 350 also facilitates partial replacement when damaged, extending the service life of the product.

[0153] See also Figure 8 In some embodiments, a first support portion 121 is provided on the outer surface of the second end shell 120, and the first support portion 121 is supported on the bottom wall of the outer shell 400. The first support portion 121 can support the entire liner 100, and play a role in shock absorption and buffering. When the energy storage unit 1000 is subjected to external impact or vibration, the first support portion 121 can absorb part of the energy and reduce its impact on the second end shell 120; secondly, the first support portion 121 can create a gap between the second end shell 120 and the bottom wall of the outer shell 400, which can provide an installation position for the second thermal insulation layer 340.

[0154] For details, please refer to Figure 5 , and continue to refer to Figure 8 The first supporting portion 121 includes a first plate portion 1211 and two sets of first supporting legs 1212 .

[0155] The first plate portion 1211 can be attached to the outer surface of the second end shell 120 by welding or the like, so that the entire first support portion 121 and the second end shell 120 have sufficient contact area to ensure that the second end shell 120 is subjected to uniform force as a whole.

[0156] The first supporting legs 1212 are respectively arranged at the edge of the first plate portion 1211 along the first direction XX and supported on the bottom wall of the outer shell 400, so that the first supporting legs 1212 can support the entire inner shell, and the first supporting legs 1212 occupy a small space, making the overall structure compact.

[0157] like Figure 8As shown, the first plate portion 1211 has a second plate portion 1213 at the edge along the second direction YY. The second plate portion 1213, the first supporting foot 1212 and the first plate portion 1211 can form a first limiting space 121a. The first limiting space 121a can play a certain guiding role, making it easier for part of the second thermal insulation layer 340 to be located in the first limiting space 121a, thereby simplifying the positioning and installation steps of the second thermal insulation layer 340.

[0158] Among them, the second insulation layer 340 also includes a first sub-insulation layer 310 and a second sub-insulation layer 320, wherein the first sub-insulation layer 310 can be a sponge layer, a rubber layer, or a mixture of sponge and rubber, and the second sub-insulation layer 320 can be a vacuum insulation board, a polyurethane board, or a combination of the vacuum insulation board and the polyurethane board. Preferably, the second sub-insulation layer 320 is a vacuum insulation board, i.e., a VIP board.

[0159] The first limited space 121a can simplify the installation steps of the first sub-insulation layer 310, and the second sub-insulation layer 320 is located outside the first limited space 121a and attached to the first sub-insulation layer 310. There is a gap between the side of the second sub-insulation layer 320 away from the first sub-insulation layer 310 and the bottom wall of the outer shell 400. In this way, the second sub-insulation layer 320 with higher hardness can be avoided from contacting the bottom wall of the outer shell 400, thereby improving the protection of the second sub-insulation layer 320 and further ensuring the insulation effect of the insulation layer.

[0160] For further information, see Fig. 9 Two groups of second supporting portions 111 are provided on the outer surface of the first end shell 110. The two groups of second supporting portions 111 and the first end shell 110 form a second limiting space 111a. The second limiting space 111a can guide the installation of the first sub-insulation layer 310 to improve the installation efficiency. Due to the existence of the second limiting space 111a, the first insulation layer 330 can be firmly confined in the second limiting space 111a, which also increases the stability of the overall structure.

[0161] Please continue reading Fig. 9 The second supporting portion 111 includes a first connecting portion 1111 and a middle portion 1112 .

[0162] The first connection portion 1111 can be attached to the outer surface of the first end shell 110 by welding or the like, so that the entire first connection portion 1111 and the first end shell 110 have sufficient contact area to ensure that the first end shell 110 is subjected to uniform force as a whole.

[0163] The middle portion 1112 is connected to the first connecting portion 1111 and extends in the opposite direction of gravity. A second limiting space 111a is defined between the middle portion 1112, the first connecting portion 1111 and the first end shell 110, wherein the middle portion 1112 can be formed by bending the edge of the first connecting portion 1111. In this way, the second limiting space 111a can be formed without any other connection method, and the bending method can also increase the strength of the second support portion 111 to ensure the stability of the product.

[0164] Based on the fact that both the first insulation layer 330 and the second insulation layer 340 can be quickly installed, in order to realize the rapid installation of the third insulation layer 350, please continue to refer to Fig. 9 The second supporting portion 111 also includes a second connecting portion 1113, and the second connecting portion 1113 is connected to a side of the middle portion 1112 away from the first connecting portion 1111. The second connecting portion 1113 is parallel to the first connecting portion 1111, and forms a third limiting space 111b with the middle portion 1112 and the side shell 130. The third limiting space 111b can guide the installation of the third thermal insulation layer 350, so that the third thermal insulation layer 350 can fit the middle portion 1112 and the second connecting portion 1113. In this way, it can also be ensured that it is firmly confined in the third limiting space 111b, and the stability of the overall structure is also increased.

[0165] Please continue reading Fig. 9 In the embodiment of the present application, the second supporting portion 111 also includes a third connecting portion 1114, which is connected to one side of the middle portion 1112 of the second connecting portion 1113, and the third connecting portion 1114 is parallel to the middle portion 1112. The inner surface of the outer shell 411 has a hanging portion 410, and the third connecting portion 1114 is clamped with the hanging portion 410.

[0166] Taking the actual assembly situation into consideration, the outer shell 411 is generally a split structure. Therefore, by providing a hanging portion 410 on the inner surface of the outer shell 411, the outer shell 411 can be positioned during assembly, reducing the possibility of shaking of the outer shell 411 and facilitating further processing of the outer shell 411.

[0167] Specifically, the third connecting portion 1114 is a plate-shaped structure, and the hanging portion 410 forms a slot, such as Fig. 9 As shown, the plate-like structure is snapped into the slot. In some other implementations, the third connecting portion 1114 can form a slot, and the bracket portion forms a plate-like structure, which can also achieve the snap-in function. No further explanation is given here.

[0168] In the embodiments of this application, please refer to Figure 4The outer shell 400 includes multiple outer shells 411, an outer top cover 412 and an outer bottom plate 413. The outer top cover 412 is arranged on the upper side of the inner liner 100 along the direction of gravity and connected to one side of the outer shell 411, that is, the outer top cover 412 is arranged opposite to the first end shell 110, and the outer bottom plate 413 is arranged on the lower side of the inner liner 100 along the direction of gravity and connected to the other opposite side of the outer shell 411, that is, the outer bottom plate 413 is arranged opposite to the second end shell 120, and multiple outer shells 411 are opposite to the corresponding side shells 130.

[0169] The adjacent outer shells 411 are detachably connected. When the inner surface of the outer shell 411 has a hanging portion 410 , the outer shell 411 can be pre-fixed, which can improve the connection and installation efficiency of the two adjacent outer shells 411 .

[0170] Furthermore, in order to further improve the installation efficiency between two adjacent outer shells 411, please refer to Figure 9-10 The outer shell 411 includes an outer shell body 4111 and a first bent portion 4112 formed by bending the outer shell body 4111. The first bent portion 4112 and the outer shell body 4111 are configured to form a right angle structure, so that the first bent portions 4112 of adjacent outer shells 411 can abut against the outer shell body 4111, and the outer shell bodies 4111 of adjacent outer shells 411 can abut against the first bent portions 4112, thereby realizing the positioning of adjacent outer shells 411, making the structures of the adjacent two outer shells 411 more stable and convenient for subsequent installation, and the first bent portion 4112 of one of the two adjacent outer shells 411 is connected to the outer shell body 4111 of the other of the two outer shells 411 by fasteners.

[0171] Specifically, a bolt hole may be provided on the first bending portion 4112 of one of the outer shells 411 , and a bolt hole may also be provided on the outer shell body 4111 in the adjacent outer shell 411 , and bolts are passed through the corresponding bolt holes to achieve relative fixation of the two adjacent outer shells 411 .

[0172] In the embodiments of this application, please refer to Fig.10 The insulation layer forms an avoidance area 300a at the corresponding first bending portion 4112, and the avoidance area 300a can provide space for bolt installation. In addition, in the embodiment of the present application, the insulation layer includes a first sub-insulation layer 310 and a second sub-insulation layer 320, and the first sub-insulation layer 310 is closer to the inner liner 100, and the hardness of the second sub-insulation layer 320 is greater than that of the first sub-insulation layer 310. Therefore, the setting of the avoidance area 300a can prevent the bolts from piercing the second sub-insulation layer 320, thereby ensuring the insulation effect of the second sub-insulation layer 320.

[0173] The avoidance area 300a extends along the third direction ZZ, which is perpendicular to the first direction XX and the second direction YY. Fig.10 The orientation shown is for reference, the third direction ZZ is the direction of gravity, and the setting of the avoidance area 300a can provide installation positions for multiple fasteners, so that the fasteners are difficult to contact the second sub-insulation layer 320, thereby improving the stability of the second sub-insulation layer 320 structure.

[0174] For further information, please refer to Fig.10 , the first bending portion 4112 of at least one of the two adjacent outer shells 411 is bent away from the side of the outer shell body 4111 to form a second bending portion 4113. In the implementation of the present application, the first bending portion 4112 of one of the two adjacent outer shells 411 is bent away from the side of the outer shell body 4111 to form a second bending portion 4113. The second bending portion 4113 extends toward the avoidance area 300a and is arranged opposite to the fastener. The second bending portion 4113 is a plate-like structure. Compared with the fastener, the contact area with the second sub-insulation layer 320 is larger. When a collision occurs, the possibility of damage to the second sub-insulation layer 320 is lower.

[0175] There may be one or more second bending portions 4113 . When there are more than one second bending portions 4113 , they can correspond to the multiple fasteners one by one, and the arrangement is specific according to actual conditions.

[0176] Please return to Figure 3 , Figure 4 as well as Figure 8 The outer surface of the outer chassis 413 has an outer support foot 4133. When the energy storage unit 1000 is moved, transported or placed, the outer support foot 4133 can reduce the direct contact between the outer chassis 413 and the ground to avoid scratches, wear or corrosion, which helps to protect the energy storage unit 1000 and extend the service life of the energy storage unit 1000.

[0177] Please continue reading Figure 8 In order to improve the structural strength of the outer chassis 413, in the embodiment of the present application, the outer chassis 413 includes an outer chassis plate body 4131 and a vertical plate 4132 bent from the outer chassis plate body 4131, and the vertical plate 4132 is fitted with the outer shell 411. The bent vertical plate 4132 can enhance the stability and rigidity of the entire outer chassis 413. In addition, since the vertical plate 4132 is fitted with the outer shell 411, it can also absorb the impact force of hitting the outer shell 411, thereby improving the protection effect of the internal shell.

[0178] Along the third direction ZZ, the edge of the vertical plate 4132 does not exceed the edge of the outer shell 411. Figure 8As shown, the overall appearance of the energy storage unit 1000 can be made neater and more beautiful, avoiding the visual inconsistency caused by the protruding structure and improving the overall texture of the product.

[0179] Please continue reading Figure 2 At least one of the multiple outer shells 411 and the outer top cover 412 is also provided with a pipe hole 400a, and the pipe hole 400a is used for the pipe connected with the heat exchange module 200 to extend. The pipe hole 400a can be opened only on the outer shell 411, or only on the outer top cover 412, or on both the outer shell 411 and the outer top cover 412 to meet the needs of different users.

[0180] In the embodiments of this application, please refer to Figure 12-13 The heat exchange module 200 includes a plurality of sub-heat exchange modules 210, and the plurality of sub-heat exchange modules 210 are arranged in parallel and spaced apart along a first direction XX. The interval between two adjacent sub-heat exchange modules 210 can accommodate the energy storage material 900, so that each sub-heat exchange module 210 can fully contact with the energy storage material 900, thereby further improving the heat exchange efficiency.

[0181] The top of the sub-heat exchange module 210 and the bottom of the sub-heat exchange module 210 are arranged relatively along the third direction ZZ, and each sub-heat exchange module 210 has multiple heat exchange paths 210a. Each heat exchange path 210a extends along the third direction ZZ to form multiple curved loops. The multiple curved loops are bent back and forth along the second direction YY, wherein the first direction XX, the second direction YY, and the third direction ZZ are arranged perpendicular to each other, that is, each heat exchange path 210a is disc-shaped, which can increase the heat exchange area of ​​the heat exchange path 210a in the inner tank 100, thereby also increasing the heat exchange efficiency.

[0182] In the embodiments of this application, see Fig.13 The pipeline structure 220 also includes a collecting pipe 221 and a plurality of delivery pipes 222. The collecting pipe 221 is arranged at the top of the plurality of sub-heat exchange modules 210 and is penetrated through the inner tank 100 to communicate with the external pipeline to input and output the heat source, and input and output the first utilization unit 3000. One end of the delivery pipe 222 is connected to the collecting pipe 221, and the other end is connected to the corresponding heat exchange flow path 210a, which can meet the requirements of the heat source and the first utilization unit 3000 for the input position. For example, the heat source can be input into the heat exchange flow path 210a from the top of the sub-heat exchange module 210 through the delivery pipe 222, and the heat exchange flow path 210a can be output from the bottom of the sub-heat exchange module 210 through the delivery pipe 222; the first utilization unit 3000 inputs into the heat exchange flow path 210a from the bottom of the sub-heat exchange module 210 through the delivery pipe 222, and the heat exchange flow path 210a can be output from the top of the sub-heat exchange module 210 through the delivery pipe 222.

[0183] Furthermore, the sub-heat exchange modules 210 are all tube-fin heat exchangers, each of which has a plurality of tube fins (not shown) arranged in a row along the second direction YY, and each heat exchange flow path 210a passes through a plurality of tube fins along the second direction YY. The tube fins increase the heat exchange area, so that the energy storage material 900 can more effectively exchange heat when flowing through these fins.

[0184] In addition, the heat exchange flow path 210a passes through the tube fins, and the tube fins can also support the heat exchange flow path 210a, thereby ensuring the stability of the structure of the entire sub-heat exchange module 210.

[0185] Please continue reading Figure 12-13 In the embodiment of the present application, the inner tank 100 also has a mounting structure 500, which connects a plurality of sub-heat exchange modules 210 arranged at intervals along the first direction XX, so that the plurality of sub-heat exchange modules 210 can maintain a certain gap along the first direction XX, thereby facilitating the injection of the energy storage material 900 into the gap, thereby improving the heat exchange efficiency.

[0186] For details, please continue to see Figure 14-15 The mounting structure 500 includes a first connecting member 510 and a second connecting member 520 .

[0187] by Fig.14 Taking the orientation as a reference, specifically, the first connecting member 510 is arranged at the bottom of the sub-heat exchange module 210, and the first connecting member 510 includes a first plate body 511 and a plurality of first fixing portions 512 arranged on the first plate body 511, the first plate body 511 can be extended along the first direction XX, and the plurality of first fixing portions 512 can be arranged in sequence along the first direction XX, so that the plurality of first fixing portions 512 can be arranged in the same direction as the plurality of sub-heat exchange modules 210, so that the first fixing portions 512 can be connected to the bottom of the corresponding sub-heat exchange module 210, so that the first connecting member 510 can connect the bottoms of the plurality of sub-heat exchange modules 210 in sequence.

[0188] The second connecting member 520 is arranged at the top of the sub-heat exchange module 210, and the second connecting member 520 includes a second plate body 521 and a plurality of second fixing portions 522 arranged on the second plate body 521. The second plate body 521 can also be extended along the second direction YY, and the plurality of second fixing portions 522 can be arranged in sequence along the second direction YY, so that the plurality of second fixing portions 522 can be arranged in the same direction as the plurality of sub-heat exchangers, so that the second fixing portions 522 can be connected to the top of the corresponding sub-heat exchange module 210, so that the second connecting member 520 can connect the tops of the plurality of sub-heat exchange modules 210 in sequence.

[0189] Therefore, multiple sub-heat exchange modules 210 can be constrained and fixed by the first connecting member 510 and the second connecting member 520, which not only limits the gap between two adjacent sub-heat exchange modules 210, but also assembles the multiple sub-heat exchange modules 210 into a whole. By setting the distance between two adjacent first fixing parts 512 and the distance between two adjacent second fixing parts 522, the gap size between two adjacent sub-heat exchange modules 210 can be easily controlled, thereby facilitating the filling of energy storage materials 900.

[0190] See also Fig.14 In the embodiment of the present application, each heat exchange path 210a extends along the third direction ZZ to form a plurality of curved loops, and the plurality of curved loops bend back and forth along the second direction YY. Therefore, when the heat exchange module 200 is installed in the inner tank space 100a, the heat exchange path 210a may collide with the side shell 130, causing damage to the heat exchange module 200, thereby affecting the heat exchange. Therefore, in the embodiment of the present application, the inner tank 100 also has a protective structure 600, which is used to reduce the possibility of collision between the heat exchange path 210a and the side shell 130.

[0191] Specifically, see Fig.16 The protective structure 600 includes a third connecting member 610, which is arranged at the bottom of the sub-heat exchange module 210, and the third connecting member 610 includes a third plate body 611 and a plurality of third fixing portions 612 arranged on the third plate body 611, the plurality of third fixing portions 612 are arranged at intervals along the first direction XX, the third fixing portions 612 are connected to the corresponding sub-heat exchange module 210, and the third plate body 611 is protruded from the heat exchange flow path 210a along the second direction YY.

[0192] In this way, the protective structure 600 can provide a gap between the sub-heat exchange module 210 and the side shell 130 in the second direction YY, thereby forming a protective layer, so that the protective structure 600 can prevent the sub-heat exchange module 210 from being damaged by collision.

[0193] In some possible embodiments, the first plate 511 and the first fixing portion 512 are designed to be at an angle. Fig.16 The shown orientation is for reference. At this time, the first direction XX is the front-to-back direction, the second direction YY is the left-to-right direction, and the third direction ZZ is the up-down direction. The first plate body 511 is located on the front side of the heat exchange module 200, and the first fixing portion 512 is located on the upper side of the heat exchange module 200. The third fixing portion 612 can also be connected to the first fixing portion 512 and the heat exchange module 200 at the same time. In order to facilitate the connection, a plurality of avoidance holes 611a are opened on the third plate body 611, and the plurality of avoidance holes 611a correspond one-to-one to the plurality of connection positions. This can increase the stability of the installation of the protective structure 600.

[0194] Please return to Figure 12-13 , and see Fig.17 In order to fix the multiple headers 221 and ensure the stability of the headers 221, in the embodiment of the present application, the liner 100 also has at least two pipe fixing structures 700, which are installed on the top of the sub-heat exchange module 210, and the pipe fixing structure 700 is provided with multiple mounting holes at intervals, and the multiple headers 221 are correspondingly installed in the multiple mounting holes. The headers 221 are firmly installed on the sub-heat exchange module 210 through the pipe fixing structure 700, which effectively prevents the headers 221 from shaking or displacement during operation, thereby ensuring the stability and reliability of the entire heat exchange system.

[0195] Further, see Fig.17 The inner tank 100 has two pipe fixing structures 700, and the two pipe fixing structures 700 are arranged on opposite sides of the heat exchange module 200 along the first direction XX. The double-sided fixing method effectively reduces the possibility of deviation or shaking of the collecting pipe 221 during operation, and enhances the structural stability of the entire heat exchange module 200.

[0196] For further information, please refer to Fig.17 The pipe fixing structure 700 includes a mounting plate 710 and a plurality of mounting portions 720 connected to the mounting plate 710. The mounting plate 710 extends along the second direction YY. The plurality of mounting portions 720 are protruded from the heat exchange module 200 along the first direction XX. The inner shell has two side shells 130 arranged opposite to each other along the first direction XX. Please refer to Figure 2 as well as Figure 6 A plurality of mounting fitting portions 131 are provided on one side of the side shell 130 facing the other side shell 130 , and the plurality of mounting fitting portions 131 are connected to the corresponding plurality of mounting portions 720 .

[0197] Since the plurality of mounting portions 720 protrude from the heat exchange module 200 along the first direction XX, a gap can be created between the heat exchange module 200 and the side shell 130 when the heat exchange module 200 and the inner tank 100 are assembled, as shown in the figure. This reduces the possibility of contact between the heat exchange module 200 and the side shell 130 of the inner tank 100 when the heat exchange module 200 is installed, reduces damage caused by scratches that may occur during the installation process, and protects the integrity of the heat exchange module 200 and the inner tank 100.

[0198] In addition, the gap between the heat exchange module 200 and the side shell 130 can provide a storage space for the energy storage material 900. Since the energy storage material 900 is in direct contact with the heat exchange module 200, during transportation, even if there are bumps or even falls, the heat exchange module 200 is unlikely to contact the side shell 130, thereby improving the safety and reliability of the entire energy storage unit 1000.

[0199] The multiple mounting parts 720 of each mounting plate 710 can be two or three, etc., which are specifically set according to the actual situation and are not limited here. Specifically, the mounting part 720 and the mounting matching part 131 can both be plate-shaped structures, and bolt holes are provided. Through the overlap of the mounting part 720 and the mounting matching part 131, the mounting part 720 and the mounting matching part 131 are connected by bolts. Of course, in some other possible embodiments, the mounting part 720 and the mounting matching part 131 can also be other structures or other connection methods, such as clamping and welding, which are not specifically limited here.

[0200] In the embodiment of the present application, the multiple heat exchange paths 210a of each sub-heat exchange module 210 may include one charging path 211a and one discharging path 212a, or may include one charging path 211a and multiple discharging paths 212a, or may include multiple charging paths 211a and one discharging path 212a, or may include multiple charging paths 211a and multiple discharging paths 212a. The charging path 211a and the energy unit 2000 are located on the same charging circuit 2000a, and the discharging path 212a and the first utilization unit 3000 are located on the same discharging circuit 3000a. The energy unit 2000 provides energy, and the energy exchanges heat with the energy storage material 900 when passing through the charging path 211a and releases heat. The first utilization unit 3000 provides heat-using substances, and the heat-using substances exchanges heat with the energy storage material 900 and absorbs heat when passing through the discharging path 212a, thereby completing the absorption and conversion of heat.

[0201] In the embodiments of this application, please refer to Figure 18-19 Preferably, the multiple heat exchange paths 210a of each sub-heat exchange module 210 include multiple charging paths 211a and multiple discharging paths 212a, and the charging circuits 2000a and the discharging circuits 3000a are alternately arranged along the first direction XX. In this way, the layout of the entire sub-heat exchange module 210 can be ensured to be compact, and the uniformity of heat exchange of the energy storage material 900 and the uniformity of heat exchange of the discharging paths 212a can also be improved.

[0202] Since the charging flow path 211a is used to transport energy, and the discharging flow path 212a is used to transport the first utilization unit 3000, in order to ensure stability during the transportation process, in the embodiment of the present application, at least one of the charging flow path 211a and the discharging flow path 212a includes a copper tube, a copper alloy tube or a stainless steel tube, that is, the charging flow path 211a may include a copper tube, a copper alloy tube or a stainless steel tube, or may include two or more of the copper tube, the copper alloy tube and the stainless steel tube, and the discharging flow path 212a is the same. In addition, the materials of copper tubes, copper alloy tubes and stainless steel tubes are easy to obtain and easy to process and manufacture.

[0203] The first utilization unit 3000 includes a water use unit, and the water use unit may come from municipal water, which may be rich in chloride ions. Chloride ions may react with aluminum, thereby affecting the quality of the final output water. Therefore, in some embodiments, the charging flow path 211a may include an aluminum tube, and the discharging flow path 212a includes a stainless steel tube, wherein the overall structure of the aluminum tube is relatively light, which can reduce the weight of the entire energy storage unit 1000 and facilitate transportation.

[0204] Since the manifold 221 needs to collect the external energy (heat source) and the external first utilization unit 3000, and needs to communicate with the corresponding charging flow path 211a and the discharging flow path 212a, in the embodiment of the present application, please refer to Figure 11-12 The collecting pipe 221 includes a charging inlet pipe 2211, a charging outlet pipe 2212, a discharging inlet pipe 2213 and a discharging outlet pipe 2214. The charging inlet pipe 2211 and the charging outlet pipe 2212 are connected to the charging flow path 211a, and the discharging inlet pipe 2213 and the discharging outlet pipe 2214 are connected to the discharging flow path 212a.

[0205] The external pump body transports the external energy to the charging inlet pipe 2211 for collection, and then transports it to each sub-heat exchange module 210 through the delivery pipe 222. The sub-heat exchange module 210 exchanges heat with the energy storage material 900. The heat of the external heat source is transferred to the energy storage material 900 and then enters the charging outlet pipe 2212 through the delivery pipe 222, and then transported to the external heat pump for heating, forming a circulation of the charging flow path 211a.

[0206] The first utilization unit 3000 is collected at the energy release inlet pipe 2213 and then transported to each sub-heat exchange module 210 through the delivery pipe 222. The sub-heat exchange module 210 exchanges heat with the energy storage material 900. The first utilization unit 3000 absorbs the stored heat from the energy storage material 900 and then enters the energy release outlet pipe 2214 through the delivery pipe 222, and is finally transported to the outside of the energy storage unit 1000 to form an energy release flow path 212a.

[0207] In order to improve the heat exchange efficiency, that is, to further improve the utilization rate of the energy storage material 900, refer to Figure 19-20 The pipeline structure 220 also includes a plurality of three-way pipes 223 , one end of each three-way pipe 223 is connected to a delivery pipe 222 , and the other two ends of each three-way pipe 223 are respectively connected to the interval heat exchange flow path 210a of the corresponding sub-heat exchange module 210 .

[0208] Among them, since the delivery pipe 222 needs to be connected to different headers 221, in the embodiment of the present application, please refer to Fig.19The delivery pipe 222 includes a charging branch pipe 2221, a charging outlet pipe 2222, a discharging branch pipe 2223, and a discharging outlet pipe 2224. Based on the fact that the heat exchange module 200 includes a plurality of sub-heat exchange modules 210, in the embodiment of the present application, the charging branch pipe 2221, the charging outlet pipe 2222, the discharging branch pipe 2223, and the discharging outlet pipe 2224 are also provided in plurality, and in the embodiment of the present application, refer to Fig.18 Multiple charging branch pipes 2221, multiple charging discharging pipes 2222, multiple discharging branch pipes 2223 and multiple discharging discharging pipes 2224 are all distributed at intervals along the first direction XX, which can make the space occupied by the delivery pipe 222 smaller, and ultimately make the internal structure of the entire energy storage unit 1000 compact.

[0209] For further information, see Fig.21 In the embodiment of the present application, the charging discharging pipe 2222 includes a first pipe section and a second pipe section. Along the second direction YY, one of the first pipe section and the second pipe section is located on the first vertical plane M, and the other of them is located on the second vertical plane N. The energy discharging branch pipe 2223 is located on the first vertical plane M or the second vertical plane N. In this way, the charging discharging pipe 2222 and the energy discharging branch pipe 2223 can be staggered. When the charging discharging pipe 2222 is connected to multiple charging flow paths 211a through a three-way connector or a multi-way connector, and the energy discharging branch pipe 2223 is connected to multiple energy discharging flow paths 212a through a three-way connector or a multi-way connector, the joint connecting the charging discharging pipe 2222 and the joint connecting the energy discharging branch pipe 2223 can be staggered, thereby making the entire spatial layout more compact.

[0210] Specifically, in the embodiment of the present application, the first pipe section of the charging branch pipe 2222 is located on the upper side of the second pipe section, and the first pipe section is located in the first vertical plane M, the second pipe section is located in the second vertical plane N, the second vertical plane N is closer to the heat exchange module 200 relative to the first vertical plane M, and the energy discharging branch pipe 2223 is located in the first vertical plane M.

[0211] Of course, in some other embodiments, the energy release branch pipe 2223 includes a first pipe section 22231 and a second pipe section 22232. Along the second direction YY, one of the first pipe section and the second pipe section is located on the first vertical plane M, and the other of them is located on the second vertical plane N. The energy charging outlet pipe 2222 is located on the first vertical plane M or the second vertical plane N.

[0212] Specifically, the first pipe section 22231 of the energy release branch pipe 2223 is located on the upper side of the second pipe section 22232, and the first pipe section 22231 is located in the first vertical plane M, the second pipe section 22232 is located in the second vertical plane N, the second vertical plane N is closer to the heat exchange module 200 relative to the first vertical plane M, and the energy charging outlet pipe 2222 is located in the first vertical plane M.

[0213] Further, in order to improve the utilization rate of the inner space of the liner 100, refer to Fig.21 In the embodiment of the present application, along the second direction YY, the charging branch pipe 2222 and the energy discharging branch pipe 2223 are closer to the inner tank 100 than the charging branch pipe 2221 and the energy discharging branch pipe 2224, that is, the charging branch pipe 2222 and the energy discharging branch pipe 2223 are staggered with the charging branch pipe 2221 and the energy discharging branch pipe 2224, which optimizes the spatial layout and enables the charging branch pipe 2222, the energy discharging branch pipe 2223, the charging branch pipe 2221 and the energy discharging branch pipe 2224 to be more compactly distributed.

[0214] The liner 100 also has at least two temperature sensing modules 800, each of which includes a probe 810, wherein one probe 810 can be inserted into the bottom end of the energy storage material 900, and the bottom end has a first preset depth, wherein the other probe 810 can be inserted into the top end of the energy storage material 900, and the top end has a second preset depth, and the energy storage material 900 can be divided into a high temperature zone and a low temperature zone along its own depth direction. It can also be said that one of the two temperature sensing modules 800 can extend into the high temperature zone to detect the first temperature of the energy storage material 900 located in the high temperature zone, and the other temperature sensing module 800 can extend into the low temperature zone to detect the second temperature of the energy storage material 900 located in the low temperature zone. The temperature range of the high temperature zone satisfies greater than or equal to 58°C and less than or equal to 65°C, and the temperature range of the low temperature zone satisfies less than or equal to 10°C, so that it can be determined whether the energy storage material 900 needs to be charged at this time based on the measured first temperature and second temperature.

[0215] See also Fig. 22 and Fig.23 In some embodiments, the temperature sensing module 800 may further include a support plate 820 , a blind pipe 830 , and the temperature sensing module 800 .

[0216] Optionally, the support plate 820 is a square plate, and the support plate 820 can be fixed to the heat exchange module 200 by threaded connection or welding, and the support plate 820 has an assembly hole (see figure).

[0217] The blind tube 830 is a hollow tube body, and one end of the blind tube 830 is an open end, and the other end of the blind tube 830 is a closed end. The blind tube 830 can be inserted into the assembly hole so that the closed end of the blind tube 830 extends into the heat exchange module 200, and the open end of the blind tube 830 can be connected to the support plate 820, so that the blind tube 830 can be accurately installed at a designated position in the heat exchange module 200 through the support plate 820.

[0218] Combination Fig.24 and Fig.25 The inner wall surface of the blind tube 830 may also be provided with a positioning structure. The temperature sensing module 800 may include a probe 810. The probe 810 may be arranged inside the blind tube 830, and the probe 810 may cooperate with the positioning structure to limit the depth of the probe 810 extending into the blind tube 830, or in other words, to limit the depth of the probe 810 extending into the heat exchange module 200, so that the probe 810 can be firmly installed at a specified position in the heat exchange module 200, thereby accurately monitoring the temperature change of the energy storage material in the specified area of ​​the heat exchange module 200.

[0219] See also Fig.25 In some embodiments, the positioning structure may include a positioning protrusion 831 disposed on the inner wall surface of the blind tube 830 , and the probe 810 may be snap-fitted or abutted against the positioning protrusion 831 .

[0220] Optionally, the inner wall surface of the blind tube 830 can protrude toward the side where the axis of the blind tube 830 is located to form a positioning protrusion 831. When installing the temperature sensing module 800, the probe 810 is inserted into the tube body of the blind tube 830 from the tube mouth of the blind tube 830. As the probe 810 is gradually inserted, the probe 810 can be engaged or abutted with the positioning protrusion 831. The positioning protrusion 831 can prevent the probe 810 from continuing to extend into the blind tube 830, thereby fixing the probe 810 at a specified position in the blind tube 830. Since the blind tube 830 is fixedly installed on the heat exchange module 200, the probe 810 can be fixed at a specified position of the heat exchange module 200, so that the probe 810 can be used to detect the temperature of the energy storage material in the specified area. By arranging the positioning protrusion 831 on the inner wall surface of the blind tube 830, the probe 810 can be conveniently positioned at the specified position.

[0221] Optionally, the positioning protrusion 831 is extended along the circumference of the blind tube 830, so that a circular protrusion is formed on the inner wall surface of the blind tube 830. When the probe 810 is set in the blind tube 830, the lower end of the probe 810 can be inserted into the circular protrusion and abut against the circular protrusion, thereby positioning the probe 810 at the position where the positioning protrusion 831 is set.

[0222] Optionally, the inner wall surface of the blind tube 830 can be provided with a plurality of positioning protrusions 831, and the plurality of positioning protrusions 831 can be arranged in sequence and at intervals along the circumference of the blind tube 830, and a snap-in groove can be formed between two adjacent positioning protrusions 831. When the probe 810 is set in the blind tube 830, the probe 810 can be snap-fitted with the snap-in groove, thereby positioning the probe 810 at the position where the positioning protrusion 831 is provided.

[0223] See also Figure 24 to Figure 26In some embodiments, the temperature sensing module 800 may further include a sensor wire 840, which is partially inserted into the blind tube 830 and connected to the probe 810, and an in-position indicator 841 is provided on the outer wall of the sensor wire 840. When the probe 810 cooperates with the positioning structure, the in-position indicator 841 is located at the mouth of the blind tube 830.

[0224] Specifically, the sensor line 840 usually includes a conductive wire that can be connected to the probe 810 and is used to transmit the temperature signal detected by the probe 810. Part of the sensor line 840 will be inserted into the blind tube 830. At this time, the blind tube 830 can also play a role in regularizing the sensor line 840 and preventing the sensor line 840 from swinging.

[0225] Optionally, the outer wall surface of the sensor wire 840 can be provided with an in-position indicator 841, which can extend along the length direction of the sensor wire 840, and can flexibly adjust the length of the sensor wire 840 between the in-position indicator 841 and the probe 810 according to the distance between the pipe mouth of the blind pipe 830 and the positioning structure, so that when installing the temperature sensing module 800, the installation status of the probe 810 can be judged by observing the position of the in-position indicator 841.

[0226] Specifically, when installing the temperature sensor module 800, the probe 810 can be first inserted into the blind tube 830, and then the sensor wire 840 can be gradually extended into the blind tube 830 to drive the probe 810 to further extend into the blind tube 830 until the sensor wire 840 can no longer extend into the blind tube 830. At this time, it can be judged whether the probe 810 is installed in place based on the positional relationship between the in-place indicator 841 and the blind tube 830.

[0227] To be more clear, if the in-place indicator 841 is located at the pipe mouth of the blind tube 830 at this time, it means that the probe 810 has successfully cooperated with the positioning structure and the probe 810 has been installed in place; if there is still a distance between the in-place indicator 841 and the pipe mouth of the blind tube 830 at this time, it means that the probe 810 may be stuck somewhere in the blind tube 830, but has not yet extended into the positioning structure, and the probe 810 is not installed in place; if the in-place indicator 841 has extended into the interior of the blind tube 830 at this time, it means that the positioning structure may be damaged and the probe 810 cannot be limited, and the probe 810 is not installed in place.

[0228] Therefore, by observing the positional relationship between the position indicator 841 and the pipe opening of the blind pipe 830, it is possible to quickly and accurately determine whether the probe 810 is installed in place.

[0229] Optionally, the in-place indicator 841 is a mark or feature, for example, the in-place indicator 841 may be a color mark, a protrusion, a groove or other forms of marks.

[0230] See also Fig.23 and Fig.24 In some embodiments, the temperature sensing module 800 may further include a connector 850, which is disposed at the mouth of the blind tube 830, and the sensor wire 840 is passed through the connector 850 and inserted into the blind tube 830, and the connector 850 is used to lock or loosen the sensor wire 840.

[0231] Optionally, the connector 850 is installed at the mouth of the blind tube 830. When the temperature sensor module 800 is installed, the sensor wire 840 will pass through the connector 850 and be inserted into the blind tube 830 until the probe 810 cooperates with the positioning structure. At this time, the connector 850 can be locked. When the connector 850 is locked, the sensor wire 840 can be fixed to prevent the sensor wire 840 from loosening or shifting in the blind tube 830, so that the probe 810 can be stably fixed in the blind tube 830 and accurately monitor the temperature change of the energy storage material. When the probe 810 needs to be maintained or replaced, the sensor wire 840 can be easily pulled out from the blind tube 830 by simply loosening the connector 850 without complicated disassembly operations.

[0232] See also Fig.26 In some embodiments, the connector 850 may include a base 851 and a fastening head 852. The base 851 is connected to the pipe mouth of the blind pipe 830. The fastening head 852 is threadedly matched with the base 851. The sensor line 840 can be sequentially passed through the fastening head 852 and the base 851. The sensor line 840 can be locked or loosened by rotating the fastening head 852 relative to the base 851. The sensor line 840 can be easily locked or loosened.

[0233] Specifically, the base 851 can adopt a size and shape that matches the blind pipe 830 so that the two can be firmly connected together, and the base 851 can also be connected to the support plate 820, so that the blind pipe 830, the base 851 and the support plate 820 can be connected together, and the base 851 can be provided with a first through hole 851a, and the first through hole 851a can be connected to the blind pipe 830.

[0234] The fastening head 852 is provided with a second through hole 852a, which is coaxially arranged with the first through hole 851a and connected to each other, so that the sensor line 840 can be sequentially passed through the second through hole 852a and the first through hole 851a, and inserted into the blind tube 830.

[0235] By rotating the fastening head 852 relative to the base 851, a threaded feed or withdrawal action can be generated between the fastening head 852 and the base 851, and the fastening head 852 can lock or loosen the sensor line 840. More clearly, when the fastening head 852 is tightened, the fastening head 852 will approach the base 851, and the fastening head 852 and the base 851 will generate sufficient friction after the fastening head 852 cooperates with each other, thereby firmly locking the sensor line 840 in the blind tube 830. Conversely, when the sensor line 840 needs to be loosened, the fastening head 852 only needs to be rotated in the opposite direction.

[0236] Optionally, the temperature sensing module 800 can also include heat transfer oil, which is a special lubricating oil used at high temperatures. The heat transfer oil can be arranged inside the blind tube 830, and the heat transfer oil can immerse the probe 810. By filling the blind tube 830 with the heat transfer oil, the air isolation layer between the probe 810 and the energy storage material can be eliminated, thereby improving the heat transfer effect between the probe 810 and the energy storage material, accelerating the response speed of the probe 810 to temperature changes, and improving the measurement accuracy.

[0237] Combination Fig.26 Optionally, the temperature sensing module 800 can further include a seal 860 , which can be disposed between the sensor line 840 and the blind tube 830 to seal a gap between the sensor line 840 and the blind tube 830 .

[0238] Specifically, the seal 860 is a component used to fill or seal the gap between two objects, and is usually made of rubber, plastic or other elastic materials. The seal 860 can increase the airtightness at the pipe mouth of the blind tube 830, prevent the heat transfer oil inside the blind tube 830 from evaporating into the external environment through the pipe mouth, and can improve the stability of the heat transfer oil inside the blind tube 830, thereby increasing the measurement accuracy of the probe 810, and can also prevent external air, moisture or other impurities from entering the blind tube 830, thereby protecting the probe from damage.

[0239] The present application also provides a HVAC system, which may include air conditioning, multi-split, heat pump and other systems for heating. Specifically, in the present application, please refer to Figure 1 The HVAC system includes an energy unit 2000, a first utilization unit 3000 and the energy storage unit 1000 mentioned above.

[0240] The energy unit 2000 is an external heat source, the energy storage unit 1000 is connected to the energy unit 2000 through the charging circuit 2000a, and the energy releases heat and exchanges heat with the energy storage material 900 when passing through the charging circuit 2000a. The energy storage unit 1000 is connected to the first utilization unit 3000 through the energy release circuit 3000a, and the first utilization unit 3000 absorbs heat and exchanges heat with the energy storage material 900 when passing through the energy release circuit 3000a.

[0241] Optionally, the energy unit 2000 can include a main heat source unit and an auxiliary main heat source unit, both of which can be connected to the charging circuit 2000a and can transfer heat to the energy storage material 900 through the charging circuit 2000a.

[0242] The main heat source unit can include one of a solar energy collection module, a water source heat exchange module and an air source heat exchange module. When conditions permit, more environmentally friendly natural energy such as solar energy collection modules, water source heat exchange modules and air source heat exchange modules are used to exchange heat with the energy storage material 900, thereby saving energy.

[0243] The auxiliary heat source unit includes an electric heating module. When the main heat source unit is insufficiently supplied with energy, the auxiliary heat source unit can provide energy to ensure the stability and continuity of the heat energy supply.

[0244] In the embodiment of the present application, the HVAC system may further include a second utilization unit 4000, the energy unit 2000 is connected to the second utilization unit 4000 via a heat transfer pipeline 4000a, and the heat transfer pipeline 4000a is connected in parallel with the charging circuit 2000a.

[0245] The first utilization unit 3000 may be a water use unit, such as municipal water;

[0246] The second utilization unit 4000 may be a heating unit, and the circulating medium in the heating unit may be a refrigerant, which exchanges heat with the indoor air to adjust the indoor temperature.

[0247] In this way, the system can allocate and utilize heat energy more flexibly. When a large amount of hot water supply is not needed, more heat energy can be directed to the heating unit, improving the overall energy utilization efficiency.

[0248] And the HVAC system also has a first working mode and a second working mode.

[0249] When the HVAC system is in the first working mode, the energy unit 2000 can provide heat to the energy storage material 900, so that the water use unit can absorb the heat stored in the energy storage material 900 to heat cold water, thereby providing hot water for users; when the HVAC system is in the second working mode, the energy unit 2000 can provide heat to the refrigerant, so that the heating unit can be used to adjust the indoor temperature.

[0250] The same or similar numbers in the drawings of this embodiment correspond to the same or similar items; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, it is based on the orientation or position relationship described in the drawings. It is only for the convenience of describing this application 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0251] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An energy storage unit, externally connected to an energy unit and a first utilization unit, characterized in that: include: An inner liner, wherein the inner liner has a heat exchange module and an energy storage material, the heat exchange module is externally connected to the energy unit and the first utilization unit, and the energy storage material is thermally connected to the heat exchange module; A heat-insulating layer attached to the outer surface of the inner liner; The outer shell covers the outer side of the thermal insulation layer.

2. The energy storage unit according to claim 1, characterized in that The thermal insulation layer includes a first thermal insulation sub-layer and a second thermal insulation sub-layer, wherein the first thermal insulation sub-layer is closer to the inner container than the second thermal insulation sub-layer; The hardness of the first sub-insulation layer is smaller than the hardness of the second sub-insulation layer, and the thermal insulation coefficient of the first sub-insulation layer is higher than the thermal insulation coefficient of the second sub-insulation layer.

3. The energy storage unit according to claim 2, characterized in that: The first sub-insulation layer includes at least one of a sponge layer and a rubber layer; And / or, the second sub-insulation layer includes at least one of a vacuum insulation board and a polyurethane board.

4. The energy storage unit according to claim 2, characterized in that: The thermal insulation layer also includes: A third sub-insulation layer is provided between the second sub-insulation layer and the outer shell, and the hardness of the third sub-insulation layer is less than that of the second sub-insulation layer.

5. The energy storage unit according to claim 1, characterized in that: The liner comprises: Inner liner shell, the thermal insulation layer covers the outer surface of the inner liner shell; The heat exchange module is installed in the inner shell; The energy storage material is filled in the inner shell and submerges at least a portion of the heat exchange module.

6. The energy storage unit according to claim 5, characterized in that: The inner shell comprises a first end shell, a second end shell and a side shell, the side shells are arranged to form an inner shell space, the first end shell covers the upper side of the inner shell space along the gravity direction, and the second end shell covers the lower side of the inner shell space along the gravity direction; The energy storage material is filled in the inner container space and is spaced apart from the first end shell.

7. The energy storage unit according to claim 6, characterized in that: The thermal insulation layer includes a first thermal insulation layer, a second thermal insulation layer and a third thermal insulation layer. The first thermal insulation layer is attached to the first end shell, the second thermal insulation layer is attached to the second end shell, and the third thermal insulation layer is attached to the outer surface of the side shell.

8. The energy storage unit according to claim 7, characterized in that: A first supporting portion is disposed on the lower surface of the second end shell, and the first supporting portion is supported on the bottom wall of the outer shell.

9. The energy storage unit according to claim 8, characterized in that: The first supporting portion comprises: A first plate portion, attached to the outer surface of the second end shell; Two groups of first supporting feet are provided, and the two groups of first supporting feet are respectively provided at the edges of the first plate portion along a first direction and supported on the bottom wall of the shell; The edge of the first plate portion along the second direction has a second plate portion, the second plate portion, the first supporting leg and the first plate portion form a first limiting space, and part of the second thermal insulation layer is located in the first limiting space; The first direction and the second direction are perpendicular to each other.

10. The energy storage unit according to claim 9, characterized in that: The second thermal insulation layer includes a first sub-insulation layer and a second sub-insulation layer, the first sub-insulation layer is at least partially located in the first limiting space, the second sub-insulation layer is located outside the first limiting space and attached to the first sub-insulation layer, and a lower surface of the second sub-insulation layer has a gap with the bottom wall of the outer shell.

11. The energy storage unit according to claim 2, characterized in that: The outer surface of the inner liner has a ridge, and the ridge is embedded in the first sub-insulation layer.

12. The energy storage unit according to claim 11, characterized in that: The raised portion includes a plate body portion and a vertical edge formed by bending the plate body portion.

13. The energy storage unit according to claim 7, characterized in that: A second supporting portion is disposed on the outer surface of the first end shell, a second limiting space is formed on the second supporting portion, and the first heat-insulating layer is located in the second limiting space.

14. The energy storage unit according to claim 13, characterized in that: The second supporting portion comprises: A first connecting portion, attached to the outer surface of the first end shell; The middle portion is connected to the first connection portion and extends in the opposite direction to the gravity direction. The second limiting space is formed between the middle portion, the first connection portion and the first end shell.

15. The energy storage unit according to claim 14, characterized in that The second supporting portion further comprises: a second connection portion connected to a side of the middle portion away from the first connection portion, the second connection portion being parallel to the first connection portion and forming a third limiting space with the middle portion; The third heat-insulating layer is disposed in the third limiting space, and the third heat-insulating layer is attached to the middle portion and the second connecting portion.

16. The energy storage unit according to claim 15, characterized in that: The second supporting portion further comprises: A third connection portion, connected to a side of the second connection portion away from the middle portion, the third connection portion being parallel to the middle portion; The inner surface of the shell has a hanging portion, and the third connecting portion is clamped with the hanging portion.

17. The energy storage unit according to claim 16, characterized in that The outer shell includes multiple outer shells, an outer top cover and an outer bottom plate, wherein the outer top cover is arranged on the upper side of the inner shell along the direction of gravity and connected to one side of the outer shell, and the outer bottom plate is arranged on the lower side of the inner shell along the direction of gravity and connected to the other opposite side of the outer shell, wherein the inner surface of the outer shell has the hanging portion.

18. The energy storage unit according to claim 17, characterized in that The outer shell includes an outer shell body and a first bent portion formed by bending the outer shell body, and the first bent portion of one of two adjacent outer shells is connected to the outer shell body of the other of the two outer shells through a fastener.

19. The energy storage unit according to claim 18, characterized in that The heat-insulating layer forms an escape area at the corresponding first bending portion, and the escape area extends along a third direction.

20. The energy storage unit according to claim 19, characterized in that The first bending portion of at least one of the two adjacent outer shells is bent at a side away from the outer shell body to form a second bending portion, and the second bending portion extends toward the avoidance area and is arranged opposite to the fastener.

21. The energy storage unit according to claim 17, characterized in that: The outer chassis includes an outer chassis plate body and a vertical plate formed by bending the outer chassis plate body, the vertical plate is in contact with the outer shell, and along the third direction, the edge of the vertical plate does not exceed the edge of the outer shell; And / or, the outer surface of the outer chassis has outer supporting feet.

22. The energy storage unit according to claim 18, characterized in that At least one of the plurality of outer shells and the outer top cover is provided with a pipe hole, and the pipe hole is used for extending a pipe connected with the heat exchange module.

23. The energy storage unit according to claim 1, characterized in that The heat exchange module comprises: A plurality of sub-heat exchange modules, wherein the plurality of sub-heat exchange modules are arranged in parallel and spaced apart along a first direction, wherein the top of the sub-heat exchange module and the bottom of the sub-heat exchange module are arranged opposite to each other along a third direction, wherein each of the sub-heat exchange modules has a plurality of heat exchange flow paths, wherein each of the heat exchange flow paths meanders and extends along the third direction to form a plurality of curved loops, wherein the plurality of curved loops bend back and forth along a second direction, wherein the first direction, the second direction, and the third direction are arranged perpendicular to each other; The pipeline structure includes a collecting pipe and a plurality of delivery pipes. The collecting pipe is arranged on the top of the plurality of sub-heat exchange modules and passes through the inner tank. One end of the delivery pipe is connected to the collecting pipe, and the other end of the delivery pipe is connected to the corresponding heat exchange flow path.

24. The energy storage unit according to claim 23, characterized in that Each of the sub-heat exchange modules is a tube-fin heat exchanger, each of the sub-heat exchange modules has a plurality of tube fins arranged in a row along the second direction, and each of the heat exchange flow paths passes through the plurality of tube fins along the second direction.

25. The energy storage unit according to claim 23, characterized in that The inner tank also has a mounting structure, the mounting structure connects a plurality of the sub-heat exchange modules arranged at intervals along a first direction, and the mounting structure includes: a first connecting member, disposed at the bottom of the sub-heat exchange module, and comprising a first plate body and a plurality of first fixing portions disposed on the first plate body, the plurality of first fixing portions being spaced apart along the first direction, the first fixing portions being connected to the corresponding sub-heat exchange module; and, The second connecting member is arranged on the top of the sub-heat exchange module, and the second connecting member includes a second plate body and a plurality of second fixing parts arranged on the second plate body, the plurality of second fixing parts are arranged at intervals along the first direction, and the second fixing parts are connected to the corresponding sub-heat exchange module.

26. The energy storage unit according to claim 25, characterized in that The inner tank also has a protective structure, which connects a plurality of sub-heat exchange modules arranged at intervals along a first direction, and the protective structure includes: The third connecting member is arranged at the bottom of the sub-heat exchange module, and the third connecting member includes a third plate body and a plurality of third fixing parts arranged on the third plate body, the plurality of third fixing parts are arranged at intervals along the first direction, the third fixing parts are connected to the corresponding sub-heat exchange module, and the third plate body is protruded from the heat exchange flow path along the second direction.

27. The energy storage unit according to claim 23, characterized in that The inner tank also has at least two pipe fixing structures, the two pipe fixing structures are arranged on the top of the plurality of sub-heat exchange modules, and are spaced apart along the first direction on opposite sides of the heat exchange modules, the collecting pipe extends along the first direction, and the two ends of the collecting pipe are respectively connected to the two pipe fixing structures.

28. The energy storage unit according to claim 27, characterized in that The pipeline fixing structure includes a mounting plate and a plurality of mounting parts connected to the mounting plate, wherein the plurality of mounting parts are arranged at intervals along the second direction and protrude from the heat exchange module along the first direction; The inner tank includes two side shells spaced apart along a first direction, one side of the other side shell opposite to the two side shells has a mounting fitting portion, and the mounting fitting portion is connected to the corresponding mounting portion to form a gap between the heat exchange module and the side shells.

29. The energy storage unit according to claim 23, characterized in that The multiple heat exchange flow paths of the sub-heat exchange module include at least one charging flow path and at least one discharging flow path. The charging flow path and the energy unit are located on the same charging circuit, and the discharging flow path and the first utilization unit are located on the same discharging circuit.

30. The energy storage unit according to claim 23, characterized in that The plurality of heat exchange paths of the sub-heat exchange module include a plurality of charging paths and a plurality of discharging paths, and the charging circuits and the discharging circuits are alternately arranged along a first direction.

31. The energy storage unit according to claim 29 or 30, characterized in that: The charging flow path and the discharging flow path are both arranged as pipelines; At least one of the charging flow path and the discharging flow path comprises a copper tube, a copper alloy tube or a stainless steel tube; Alternatively, the charging flow path includes an aluminum tube, and the discharging flow path includes a stainless steel tube.

32. The energy storage unit according to claim 30, characterized in that The collecting pipe includes a charging inlet pipe, a charging outlet pipe, a discharging inlet pipe and an discharging outlet pipe. The charging inlet pipe, the charging outlet pipe, the discharging inlet pipe and the discharging outlet pipe are arranged at intervals along the second direction and are correspondingly connected to the conveying pipes. The other end of the conveying pipe is in communication with the corresponding charging flow path and the discharging flow path.

33. The energy storage unit according to claim 32, characterized in that The delivery pipe includes an energy charging branch pipe, an energy charging expenditure pipe, an energy discharging branch pipe and an energy discharging expenditure pipe. Multiple energy charging branch pipes, multiple energy charging expenditure pipes, multiple energy discharging branch pipes and multiple energy discharging expenditure pipes are all distributed at intervals along the first direction.

34. The energy storage unit according to claim 33, characterized in that The energy charging branch pipe includes a first pipe section and a second pipe section. Along the second direction, one of the first pipe section and the second pipe section is located on a first vertical plane, and the other of the first pipe section and the second vertical plane. The energy releasing branch pipe is located on the first vertical plane or the second vertical plane. Or, the energy-releasing branch pipe includes a first pipe section and a second pipe section, along the second direction, one of the first pipe section and the second pipe section is located on a first vertical plane, the other of the first pipe section and the second vertical plane, and the energy-charging branch pipe is located on the first vertical plane or the second vertical plane; Wherein, the first vertical plane and the second vertical plane are not coplanar.

35. The energy storage unit according to claim 34, characterized in that Along the second direction, the energy charging branch pipe and the energy releasing branch pipe are closer to the inner tank than the energy charging branch pipe and the energy releasing branch pipe.

36. The energy storage unit according to claim 25, characterized in that The inner tank also has at least two temperature sensing modules, and at least two of the temperature sensing modules include probes. One of the probes of at least two of the temperature sensing modules extends into the bottom end of the energy storage material along the third direction, and the other probe extends into the top end of the energy storage material along the third direction.

37. The energy storage unit according to claim 36, characterized in that The temperature sensing module also includes: A support plate, fixed relative to the heat exchange module, and the support plate has an assembly hole; and A blind tube, inserted into the assembly hole and used to extend into the energy storage material, wherein the inner wall surface of the blind tube is provided with a positioning structure; Wherein, the probe cooperates with the positioning structure to limit a preset depth of the probe inserted into the energy storage material.

38. The energy storage unit according to claim 37, characterized in that The positioning structure comprises a positioning protrusion arranged on the inner wall surface of the blind tube, and the probe is engaged with or abutted against the positioning protrusion.

39. The energy storage unit according to claim 37, characterized in that The temperature sensing module also includes a sensor wire body, which is partially inserted into the blind tube and connected to the probe, and an outer wall surface of the sensor wire body is provided with a position indicator. When the probe cooperates with the positioning structure, the position indicator is located at the pipe mouth of the blind tube.

40. The energy storage unit according to claim 39, characterized in that The temperature sensing module further includes a connector, which is disposed at the pipe opening of the blind tube. The sensor wire is passed through the connector and inserted into the blind tube. The connector is used to lock or loosen the sensor wire.

41. A HVAC system, characterized in that: include: Energy unit; first utilization unit; as well as According to the energy storage unit according to any one of claims 1 to 40, the energy storage unit is connected to the energy unit through a charging circuit, the energy storage unit is connected to the first utilization unit through a discharge circuit, and the charging circuit and the discharge circuit are staggered.

42. The HVAC system according to claim 41, characterized in that: The energy unit comprises: a main heat source unit, connected to the energy storage unit through the charging circuit, the main heat source unit comprising a solar heat collection module, a water source heat exchange module and an air source heat exchange module; and The auxiliary heat source unit is connected to the energy storage unit through the charging circuit, and the main heat source unit includes an electric heating module.

43. The HVAC system according to claim 41, characterized in that It also includes a second utilization unit, the energy unit is connected to the second utilization unit through a heat transfer pipeline, and the heat transfer pipeline is connected in parallel with the charging circuit.

44. The HVAC system according to claim 43, characterized in that: The HVAC system has: a first working mode, when the HVAC system is in the first working mode, the energy unit provides heat to the energy storage material, and the first utilization unit absorbs the heat of the energy storage material; and The second working mode: when the HVAC system is in the second working mode, the energy unit provides heat for the second utilization unit.

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