Energy storage heat supply device

Abstract

The invention discloses an energy storage and heat supply device which comprises an outer shell, a sealed containing cavity is formed in the outer shell, a plurality of sets of energy storage and heat supply modules are arranged in the sealed containing cavity, a liquid flow header pipe is arranged on the energy storage and heat supply modules, a liquid medium circulates in the liquid flow header pipe, and each energy storage and heat supply module comprises a plurality of energy storage and heat supply units. Inner supporting heat insulation bodies are arranged among the energy storage and heat supply units, and liquid flow pipelines are further arranged on the energy storage and heat supply units. The energy storage and heat supply unit is of a multi-layer honeycomb structure with a plurality of unit cavities distributed in the horizontal direction, the plurality of unit cavities comprise a heating unit cavity, a solid heat storage unit cavity and a liquid flow unit cavity, a heating body is arranged in the heating unit cavity, the solid heat storage unit cavity is filled with a fixed heat-conducting medium, the solid heat storage unit cavity is arranged around the heating unit cavity in a surrounding mode, and the liquid flow unit cavity is communicated with the heating body. The solid heat storage unit cavity is further internally provided with a liquid heat exchange channel communicating with the liquid flow unit cavity. The energy storage heat supply device has the advantages of being high in heat conduction efficiency and balanced in heat transfer medium temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of molten salt energy storage heating, and particularly relates to an energy storage heating device. Background Art

[0002] The core of the molten salt energy storage heating system is based on the characteristics of high boiling point and suitability for high-temperature heat storage of molten salt under normal pressure, and is mainly applied to the fields of industrial waste heat utilization and clean heating.

[0003] The existing energy storage heating system heats the solid heat-conducting medium through a resistive heater for energy storage, exchanges heat between air and the solid heat-conducting medium, and then transfers the heat in the air to the target medium in a water heater, steam heater or heat-conducting oil heater pressurized by a fan. The existing energy storage heating system generally has defects such as low heat transfer efficiency, uneven heat distribution, and large temperature difference in the heat transfer medium. Summary of the Invention

[0004] The present invention aims to solve one of the above technical problems in the prior art to a certain extent. For this purpose, the present invention provides an energy storage heating device, which has the advantages of high heat conduction efficiency and balanced temperature of the heat transfer medium.

[0005] In a first aspect, in order to achieve the above object, the present invention provides an energy storage heating device, including an outer shell, a sealed cavity is formed inside the outer shell, a plurality of groups of energy storage heating modules are arranged in the sealed cavity, a liquid flow main pipe is arranged on the plurality of energy storage heating modules, a liquid medium flows in the liquid flow main pipe, the energy storage heating module includes a plurality of energy storage heating units, an inner support heat insulation body is arranged between the plurality of energy storage heating units, and a liquid flow branch pipe is also arranged on the energy storage heating unit; The energy storage heating unit is set as a multi-layer honeycomb structure with a plurality of unit cavities arranged in the horizontal direction. The plurality of unit cavities include a heating unit cavity, a solid heat storage unit cavity and a liquid flow unit cavity. A heating body is arranged in the heating unit cavity, a fixed heat-conducting medium is filled in the solid heat storage unit cavity, the liquid medium flows in the liquid flow unit cavity, the solid heat storage unit cavity surrounds the heating unit cavity, and a liquid heat exchange channel communicating with the liquid flow unit cavity is also arranged in the solid heat storage unit cavity.

[0006] In this technical solution, the energy storage heating device includes multiple energy storage heating modules, and each energy storage heating module includes multiple energy storage heating units. By setting the energy storage heating units in a multi-layer honeycomb structure, the heat conduction efficiency and structural strength of the energy storage heating units are improved. The solid heat storage unit cavities are arranged around a heating unit cavity, and each solid heat storage unit is adjacent to a heating unit cavity, enabling the solid heat storage units to quickly absorb the heat energy of the heating body in the heating unit cavity. The temperature difference of the solid media in each solid heat storage unit cavity is small, and a liquid flow unit cavity adjacent to it is also arranged around each solid heat storage unit cavity. Then, by arranging liquid heat exchange channels communicating with the liquid flow unit cavities in the solid heat storage unit cavities, the liquid medium in the liquid heat exchange channels can quickly absorb the heat energy stored in the solid heat storage unit cavities. Then, the liquid medium is connected from the liquid flow unit cavity along the pipeline to the temperature control tank for heating. Through the above settings, the temperature difference can be reduced while improving the heat conduction efficiency, and the volume of the energy storage heat exchange device can be reduced.

[0007] Preferably, the multi-layer honeycomb structure is a regular hexagonal honeycomb structure. Six solid heat storage unit cavities are arranged around each heating unit cavity, and the liquid flow unit cavities are arranged between the solid heat storage unit cavities. Setting the multi-layer honeycomb structure as a regular hexagonal honeycomb structure can further improve the heat conduction efficiency and reduce the temperature difference between the solid heat storage unit cavities.

[0008] Preferably, the liquid heat exchange channels are straight channels inclined with respect to the horizontal direction, and a height difference is formed between the two ends of the liquid heat exchange channels connected to the liquid flow unit cavities on both sides of the solid heat storage unit cavity. The adjacent two liquid flow unit cavities are connected through the liquid heat exchange channels, and the liquid heat exchange channels are inclined, so as to form a height difference at both ends of the liquid heat exchange channels, facilitating the flow of the liquid heat exchange medium in the liquid heat exchange channels by gravity.

[0009] Preferably, the included angle between the liquid heat exchange channels and the horizontal direction is set to 30°-60°.

[0010] In order to facilitate the setting and ensure the stable flow rate of the liquid medium in the liquid heat exchange channels, the inclination angle of the liquid heat exchange channels is set to 30°-60°.

[0011] Preferably, the liquid flow main pipe includes an inlet liquid main pipe for conveying a liquid medium to the liquid flow unit cavity and an outlet liquid main pipe for collecting the liquid medium in the liquid flow unit cavity. Liquid flow branch pipes are provided at the inlet ends of the liquid flow unit cavities of several of the energy storage and heat supply units and are inserted into the inlet liquid main pipe. The depths of insertion of the liquid flow branch pipes into the inlet liquid main pipe decrease sequentially along the flow direction of the liquid medium in the inlet liquid main pipe, so that the maximum flow difference of the liquid medium flowing from the inlet liquid main pipe to each liquid flow unit cavity (230) is less than 10%. By setting the depths of insertion of the liquid flow branch pipes into the inlet liquid main pipe to decrease sequentially along the flow direction of the liquid medium in the inlet liquid main pipe, the flow rates of the liquid medium flowing from the inlet liquid main pipe to each liquid flow unit cavity are basically kept consistent.

[0012] Preferably, the heating element is a bundled electric heating rod.

[0013] Preferably, the liquid medium includes at least one of heat-conducting oil, binary molten salt, and ternary molten salt.

[0014] Preferably, the internal support heat insulator includes a steel structure support and heat-insulating bricks. The heat-insulating bricks are at least one of diatomite heat-insulating bricks or light clay heat-insulating bricks.

[0015] It further includes a temperature control assembly provided at one end of the energy storage and heat supply module. The temperature control assembly includes a temperature control tank, a stirrer, and a delivery pump. The temperature control tank is used to modulate the liquid medium to a preset temperature. The stirrer is arranged in the temperature control tank and is used to stir the liquid medium in the temperature control tank. The temperature control tank is connected to the inlet liquid main pipe and the outlet liquid main pipe through pipelines. The liquid medium in the temperature control tank, the inlet liquid main pipe, the liquid flow unit cavity, and the outlet liquid main pipe circulates under the drive of the delivery pump. The delivery pump is also used to deliver the liquid medium in the temperature control tank to the outside for heat supply.

[0016] Preferably, the stirrer includes a motor and a stirring assembly. The stirring assembly includes a bearing, a rotating shaft, and several blade groups. The blade groups are arranged on the rotating shaft and rotate with the rotating shaft. The rotating shaft is fixedly connected to the output shaft of the motor through the bearing and rotates under the drive of the motor.

[0017] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and the drawings. The best embodiments or means of the present invention will be shown in detail in combination with the drawings, but it is not a limitation to the technical solution of the present invention. In addition, these features, elements, and components appear in multiple in each of the following texts and drawings, and are marked with different symbols or numbers for convenience of representation, but all represent components with the same or similar structures or functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the drawings: Figure 1It is a schematic three-dimensional structure diagram of the energy storage heating device of this embodiment (the outer shell part is removed); Figure 2 It is a schematic horizontal cross-sectional view of the energy storage heating device of this embodiment; Figure 3 It is a schematic vertical cross-sectional view of the energy storage heating module of this embodiment along the liquid flow main pipe; Figure 4 It is a schematic structural diagram of the energy storage heating unit of this embodiment; Figure 5 It is of this embodiment Figure 2 Enlarged view at location A; Figure 6 It is a schematic connection diagram of the energy storage heating unit of this embodiment; Figure 7 It is a schematic structural diagram of the stirrer of this embodiment.

[0019] Among them, 100, outer shell; 200, energy storage heating module; 210, energy storage heating unit; 211, heating unit cavity; 212, solid heat storage unit cavity; 213, liquid heat exchange channel; 214, cluster electric heating rod; 215, liquid flow unit cavity; 220, inner support heat insulator; 230, liquid flow branch pipe; 240, support pallet; 250, support column; 300, liquid flow main pipe; 400, temperature control tank; 500, stirrer; 510, motor; 520, rotating shaft; 530, bearing; 540, blade group; 600, transfer pump. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. Based on the embodiments in the implementation manners, it is intended to explain the present invention and should not be construed as a limitation to the present invention.

[0021] As used herein, "one embodiment" or "example" or "instance" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in some embodiments" at various positions in the specification does not necessarily refer to the same embodiment.

[0022] In the description of the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0023] In the related art, the energy storage heating equipment heats the solid heat storage module through a resistive heater, then exchanges heat between the gas and the solid heat storage module, and then transfers the heat to the target medium in a water heater, a steam heater or a heat transfer oil heater after pressurization by a fan. The air thermal conductivity is only 0.026 W / (m·K), the heat transfer efficiency is low, and a large temperature difference is required to achieve a good conduction effect. The thermal conductivity of ternary salt is about 0.4 W / (m·K), the thermal conductivity of binary salt is about 0.5 W / (m·K), and the thermal conductivity of heat transfer oil is 0.1 - 0.2 W / (m·K). Therefore, the inventor thought of replacing the air heat transfer in the prior art with a flowing molten salt heat transfer medium and improving the heat transfer efficiency of the energy storage heating equipment and reducing the equipment volume through a special structural design of the solid heat storage module.

[0024] Such as Figures 1-4As shown in the figure, an energy storage heating device includes a housing 100. A sealed cavity is formed inside the housing 100. A number of energy storage heating modules are arranged inside the sealed cavity. A liquid flow main pipe 300 is arranged on the number of energy storage heating modules. A liquid medium flows inside the liquid flow main pipe 300. The energy storage heating module includes a number of energy storage heating units 210. An internal support heat insulation body 220 is arranged between the number of energy storage heating units 210. A liquid flow branch pipe 230 is also arranged on the energy storage heating unit 210. The energy storage heating unit 210 is set as a multi-layer honeycomb structure with a number of unit cavities arranged horizontally. The number of unit cavities includes a heating unit cavity 211, a solid heat storage unit cavity 212, and a liquid flow unit cavity 215. A heating body is arranged inside the heating unit cavity 211. A fixed heat conduction medium is filled inside the solid heat storage unit cavity 212. The liquid medium flows inside the liquid flow unit cavity 215. The solid heat storage unit cavity 212 is wound around the heating unit cavity 211. A liquid heat exchange channel 213 communicating with the liquid flow unit cavity 215 is also arranged inside the solid heat storage unit cavity 212. In this embodiment, the overall structure of the energy storage heating device is a cuboid structure, and a number of energy storage heating modules 200 are regularly arranged inside. Each energy storage module is composed of a number of regularly arranged energy storage heating units 210. Specifically, the energy storage heating device includes 5 evenly arranged energy storage heating modules 200. Each energy storage heating module 200 includes 4 evenly arranged energy storage heating units 210. In other embodiments, the energy storage device may also include energy storage heating modules 200 and energy storage heating units 210 with other quantities or arrangement rules.

[0025] Specifically, the housing 100 and the internal support heat insulation body 220 are composed of steel structures, diatomite heat insulation bricks, or clay heat insulation bricks, etc. Specifically, the housing 100 is made of a steel structure and diatomite heat insulation bricks through a construction method. The diatomite heat insulation brick has good structural strength and good heat insulation effect. The internal support heat insulation body 220 is composed of a steel structure and lightweight clay heat insulation bricks. The steel structure ensures the internal support strength, and the lightweight clay heat insulation bricks ensure that the internal support heat insulation body 220 has a good heat insulation effect. A sealed steel groove is also covered and arranged on the inner side surface of the housing 100. The sealed steel groove is used to prevent the liquid medium from leaking from the gap between the heat insulation bricks.

[0026] In this technical solution, the energy storage heating device includes a plurality of energy storage heating modules 200, and each energy storage heating module 200 includes a plurality of energy storage heating units 210. By setting the energy storage heating units 210 as a multi-layer honeycomb structure, the heat conduction efficiency and structural strength of the energy storage heating units 210 are improved. The solid heat storage unit cavity 212 is arranged around a heating unit cavity 211, and each solid heat storage unit is adjacent to a heating unit cavity 211, enabling the solid heat storage unit to quickly absorb the heat energy of the heating body in the heating unit cavity 211. The temperature difference of the solid medium in each solid heat storage unit cavity 212 is small, and a liquid flow unit cavity 215 adjacent to it is also arranged around each solid heat storage unit cavity 212. Then, by arranging a liquid heat exchange channel 213 communicating with the liquid flow unit cavity 215 in the solid heat storage unit cavity 212, the liquid medium in the liquid heat exchange channel 213 can quickly absorb the heat energy stored in the solid heat storage unit cavity 212. Then, the liquid medium is communicated from the liquid flow unit cavity 215 along the pipeline to the temperature control tank for temperature adjustment, and then is transported to the outside for heating by a delivery pump. Through the above settings, the temperature difference can be reduced while improving the heat conduction efficiency, and the volume of the energy storage heat exchange device can be reduced.

[0027] In some embodiments, as Figure 2 、 5 shown, the multi-layer honeycomb structure is set as a regular polygon honeycomb structure. In a specific embodiment, the regular polygon honeycomb structure is set as a regular hexagon honeycomb structure. Six solid heat storage unit cavities 212 are arranged around each heating unit cavity 211, and a liquid heat exchange channel 213 is embedded in each solid heat storage unit cavity 212. This shape can ensure the tight combination between the solid heat storage unit cavities 212, facilitate installation. At the same time, the structure of the regular polyhedron increases the heat exchange area in the entire heat exchange and heating unit, which is beneficial to the heat transfer between the solid heat storage medium and the liquid heat conduction medium. Setting the multi-layer honeycomb structure as a regular hexagon honeycomb structure can further improve the heat conduction efficiency and reduce the temperature difference between the solid heat storage unit cavities 212.

[0028] In some embodiments, as Figure 3 、 4 shown, the liquid heat exchange channel 213 is set as a straight channel inclined with respect to the horizontal direction, and a height difference is formed between the two end parts where the liquid heat exchange channel 213 is connected to the liquid flow pipelines on both sides of the energy storage heating unit 210. The liquid heat exchange channel 213 enables two adjacent liquid flow unit cavities 215 to communicate with each other, and the liquid heat exchange channel 213 is inclined, so a height difference is formed at both ends of the liquid heat exchange channel 213, facilitating the liquid heat exchange medium to flow in the liquid heat exchange channel 213 by gravity.

[0029] In some embodiments, as Figure 4, the included angle between the liquid heat exchange channel 213 and the horizontal direction is set to 30° to 60°. To facilitate setting and ensure a stable flow rate of the liquid medium in the liquid heat exchange channel 213, the inclination angle of the liquid heat exchange channel 213 is set to 30° to 60°. In a specific embodiment, as Figure 3 shown, the angle between the liquid heat exchange channel 213 and the vertical channel wall is α, then the included angle between the liquid heat exchange channel 213 and the horizontal direction is 90° - α. The value range of α is 30° to 60°, so the value range of 90° - α is also 30° to 60°. A support tray 240 is further provided at the bottom of the energy storage heat exchange unit 210, and support columns 250 are further provided at the bottom of the support tray 240. A stable support structure is formed by the support columns 250 and the support tray 240 to stably support the energy storage heat supply unit.

[0030] In some embodiments, such as Figure 3 , 6As shown, the liquid flow main pipe 300 includes an inlet liquid main pipe for delivering a liquid medium to the liquid flow unit cavity 215 and an outlet liquid main pipe for collecting the liquid medium in the liquid flow unit cavity 215. The inlet ends of the liquid flow unit cavities 215 of several energy storage and heating units 210 are each provided with an inlet branch pipe inserted into the inlet liquid main pipe. The depths of the respective inlet branch pipes inserted into the inlet liquid main pipe decrease sequentially along the flowing direction of the liquid medium in the inlet liquid main pipe, so that the maximum flow rate difference of the liquid medium flowing from the inlet liquid main pipe to each liquid flow unit cavity 215 is less than 10%. By setting the depths of the liquid flow branch pipes 230 inserted into the inlet liquid main pipe to decrease sequentially along the flowing direction of the liquid medium in the inlet liquid main pipe, the flow rates of the liquid medium flowing from the inlet liquid main pipe to each liquid flow unit cavity 215 are basically kept consistent. Specifically, the inlet end of each liquid flow unit cavity 215 is provided with an inlet branch pipe inserted into the inlet liquid main pipe. That is, the liquid medium in the inlet liquid main pipe flows into each liquid flow unit cavity 215 through the inlet branch pipe, then flows from the inlet end to the outlet end of the liquid flow unit cavity 215. The outlet end of the liquid flow unit cavity 215 is further provided with an outlet branch pipe communicating with the outlet liquid main pipe to deliver the liquid medium that has completed heat exchange with the solid heat-conducting medium to the temperature control tank 400, thus forming a circulating flow of the liquid medium and completing heat transfer during the circulation process. The inlet ends of the liquid flow unit cavities 215 of the energy storage and heating units 210 are each provided with an inlet branch pipe inserted into the inlet liquid main pipe. The depths of the respective inlet branch pipes inserted into the inlet liquid main pipe decrease sequentially along the flowing direction of the liquid medium in the inlet liquid main pipe. That is, the closer the inlet branch pipe is to the inlet end of the liquid flow main pipe 300, the higher the height at which the inlet branch pipe is inserted into the inlet liquid main pipe. The closer the position where the inlet branch pipe is inserted into the liquid flow main pipe 300 is to the inlet end of the inlet liquid main pipe, the greater the liquid flow rate. And the deeper the depth at which the inlet branch pipe is inserted into the inlet liquid main pipe, the smaller the liquid flow rate. Therefore, by setting different insertion depths according to the distances of the inlet branch pipes inserted into the specific inlet ends of the liquid main pipe, the flow rates flowing from the liquid flow main pipe 300 into each liquid flow unit cavity 215 can be basically kept consistent, so that the temperature of the liquid medium in each liquid flow unit cavity 215 is more uniform, and the temperature difference of the solid heat storage medium in the energy storage and heating device is also smaller.

[0031] In some embodiments, the heating body is provided as a bundled electric heating rod 214, and the liquid medium includes at least one of heat-conducting oil, binary molten salt, and ternary molten salt. The bundled electric heating rod 214 is used to convert electrical energy into heat energy. In a specific embodiment, the liquid medium can be set as any one or a combination of heat-conducting oil, binary molten salt, and ternary molten salt, or other liquid media in the prior art.

[0032] In some embodiments, such as Figure 2As shown in the figure, it further includes a temperature regulating component disposed at one end of the energy storage and heat supply module 200. The temperature regulating component includes a temperature regulating tank 400, a stirrer 500, and a delivery pump. The temperature regulating tank 400 is used to modulate the liquid medium to a preset temperature. The stirrer 500 is disposed in the temperature regulating tank 400 and is used to stir the liquid medium in the temperature regulating tank 400. The temperature regulating tank 400 is in pipeline communication with the liquid inlet main pipe and the liquid outlet main pipe. The liquid medium in the temperature regulating tank 400, the liquid inlet main pipe, the liquid flow unit cavity 215, and the liquid outlet main pipe circulates under the drive of the delivery pump. The temperature regulating tank 400 is integrally conical. The temperature regulating tank 400 is used to modulate the liquid medium to a preset temperature. The stirrer 500 is used to mix the liquid medium in the temperature regulating tank 400, so that the liquid media at different temperatures are fully mixed to obtain a liquid medium at the target temperature. The delivery pump is also used to deliver the liquid medium at the target temperature to the outside for heat supply.

[0033] In some embodiments, as Figure 7 shown, the stirrer 500 includes a motor 510 and a stirring assembly. The stirring assembly includes a bearing 530, a rotating shaft 520, and a plurality of blade groups 540. The blade groups 540 are disposed on the rotating shaft 520 and rotate with the rotating shaft 520. The rotating shaft 520 is fixedly connected to the output shaft of the motor 510 through the bearing 530 and rotates under the drive of the motor 510.

[0034] In summary, the energy storage and heat supply device of this embodiment improves the heat supply efficiency by setting the energy storage and heat supply unit 210 with a honeycomb structure. By arranging a liquid heat exchange channel 213 communicating with the liquid flow unit cavity 215 in the solid heat storage unit cavity 212, the liquid medium in the liquid heat exchange channel 213 can quickly absorb the heat energy stored in the solid heat storage unit cavity 212. Then, the liquid medium is transferred from the liquid flow unit cavity 215 along the pipeline to the temperature regulating tank for temperature regulation, and then is delivered to the outside for heat supply by the delivery pump. Through the above settings, it is possible to reduce the temperature difference while improving the heat conduction efficiency, and reduce the volume of the energy storage and heat exchange device.

[0035] In the heat storage process of the heat storage and heating device of this embodiment, heat energy is generated by the bundled electric heating rod 214. The heat energy is first transferred to the solid heat conducting medium in the solid heat storage unit cavity 212 adjacent to the bundled electric heating rod 214. The solid heat conducting medium in the solid heat storage unit cavity 212 then transfers the heat energy to the liquid heat exchange channel 213 in the solid heat storage unit cavity 212 and the liquid medium in the liquid flow unit cavity 215 adjacent to the solid heat storage unit cavity 212. The liquid medium flows under the drive of the delivery pump. The high-temperature liquid medium flows from the energy storage and heating module 200 to the temperature control tank 400, and the low-temperature liquid medium flows from the temperature control tank 400 to the energy storage and heating module 200. Low-temperature liquid medium is also injected into the temperature control tank 400. The liquid medium in the temperature control tank 400 is stirred and mixed by the stirrer 500 to mix the liquid media at different temperatures in proportion to obtain the liquid medium at the target temperature. Then, the delivery pump transports the liquid medium at the target temperature to the outside for heat supply.

[0036] The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A energy storage and heat supply device, comprising an outer housing (100), wherein a sealed cavity is formed inside the outer housing (100), and is characterized in that, A number of energy storage and heat supply modules are arranged in the sealed cavity. A liquid flow main pipe (300) is arranged on the number of energy storage and heat supply modules. A liquid medium flows in the liquid flow main pipe (300). The energy storage and heat supply module includes a number of energy storage and heat supply units (210). An internal support heat insulation body (220) is arranged between the number of energy storage and heat supply units (210). A liquid flow branch pipe (230) is also arranged on the energy storage and heat supply unit (210). The energy storage and heat supply unit (210) is set as a multi-layer honeycomb structure with a number of unit cavities arranged horizontally. The number of unit cavities includes a heating unit cavity (211), a solid heat storage unit cavity (212), and a liquid flow unit cavity (215). A heating body is arranged in the heating unit cavity (211). A fixed heat conduction medium is filled in the solid heat storage unit cavity (212). The liquid medium flows in the liquid flow unit cavity (215). The solid heat storage unit cavity (212) is wound around the heating unit cavity (211). A liquid heat exchange channel (213) communicating with the liquid flow unit cavity (215) is also arranged in the solid heat storage unit cavity (212).

2. The energy storage heating device according to claim 1, wherein The multi-layer honeycomb structure is set as a regular hexagonal honeycomb structure. Six solid heat storage unit cavities (212) are wound around each heating unit cavity (211). The liquid flow unit cavity (215) is arranged between the solid heat storage unit cavities (212).

3. The energy storage heating device according to claim 2, characterized in that The liquid heat exchange channel (213) is set as a straight channel inclined with respect to the horizontal direction. A height difference is formed between the two end parts where the liquid heat exchange channel (213) is connected to the liquid flow unit cavities (215) on both sides of the solid heat storage unit cavity (212).

4. The energy storage heating device according to claim 3, characterized in that, The included angle between the liquid heat exchange channel (213) and the horizontal direction is set to be 30°-60°.

5. The energy storage heating device according to claim 1, wherein The liquid flow main pipe (300) includes an inlet liquid main pipe for delivering the liquid medium to the liquid flow unit cavity (215) and an outlet liquid main pipe for collecting the liquid medium in the liquid flow unit cavity (215). The inlet ends of the liquid flow unit cavities (215) of the number of energy storage and heat supply units (210) are provided with liquid flow branch pipes (230) inserted into the inlet liquid main pipe. The depths of the respective liquid flow branch pipes (230) inserted into the inlet liquid main pipe decrease successively along the flowing direction of the liquid medium in the inlet liquid main pipe, so that the maximum flow rate difference of the liquid medium flowing from the inlet liquid main pipe to each liquid flow unit cavity (215)(230) is less than 10%.

6. The energy storage heating device according to any one of claims 1 to 5, characterized in that The heating body is set as a bundled electric heating rod (214).

7. The energy storage heating device according to any one of claims 1 to 5, characterized in that The liquid medium includes at least one of heat-conducting oil, binary molten salt, and ternary molten salt.

8. The energy storage and heat supply device according to any one of claims 1 to 5, characterized in that, The internal support heat insulation body (220) includes a steel structure support body and heat insulation bricks. The heat insulation bricks are set as at least one of diatomite heat insulation bricks or light clay heat insulation bricks.

9. The energy storage and heat supply device according to claim 5, characterized in that It further includes a temperature regulating component arranged on the top of the energy storage and heat supply module (200). The temperature regulating component includes a temperature regulating tank (400), a stirrer (500) and a delivery pump. The temperature regulating tank (400) is used to absorb the heat energy in the liquid medium. The stirrer (500) is arranged in the temperature regulating tank (400) and is used to stir the liquid medium in the temperature regulating tank (400). The temperature regulating tank (400) is connected to the liquid inlet main pipe and the liquid outlet main pipe through pipelines. The liquid medium in the temperature regulating tank (400), the liquid inlet main pipe, the liquid flow unit cavity (215) and the liquid outlet main pipe flows under the drive of the delivery pump. The delivery pump is also used to transport the liquid medium in the temperature regulating tank (400) to the outside for heat supply.

10. The energy storage and heat supply device according to claim 9, wherein The stirrer (500) includes a motor (510) and a stirring component. The stirring component includes a bearing (530), a rotating shaft (520) and a plurality of blade groups (540). The blade groups (540) are arranged on the rotating shaft (520) and rotate along with the rotating shaft (520). The rotating shaft (520) is fixedly connected to the output shaft of the motor (510) through the bearing (530) and rotates under the drive of the motor (510).

Images