Energy storage and heat storage equipment

Abstract

The utility model discloses a kind of energy storage and heat storage equipment, it is related to energy storage and heat storage technical field, including energy storage and heat storage main body, the energy storage and heat storage main body includes: heat storage object;Heating element, the heating element is set in the heat storage object, for the heat storage object is heated;Heat exchange component, the heat exchange component includes bottom chamber, heat exchange pipe and top chamber, the bottom chamber and the top chamber are respectively set in the bottom and top of the heat storage object, the bottom chamber is connected with medium inlet pipe, for into heat exchange medium;The heat exchange pipe is provided with multiple, the bottom of any one heat exchange pipe is communicated with the top of the bottom chamber, top all passes through the heat storage object upwards, and is communicated with the bottom of the top chamber;The top chamber is connected with medium outlet pipe, for after heating heat exchange medium is discharged.The utility model can reduce cost, and it is suitable for use widely.

Description

Technical Field

[0001] This utility model relates to the field of energy storage and thermal energy storage technology, and in particular to an energy storage and thermal energy storage equipment. Background Technology

[0002] Currently, excess electricity is easily generated during off-peak hours (such as at night). Storing this energy can prevent waste. Moreover, electricity prices during off-peak hours are significantly lower than during peak hours (such as peak daytime industrial and commercial electricity consumption). Charging during off-peak hours and discharging or using the electricity during peak hours can directly reduce electricity costs. Therefore, utilizing off-peak electricity storage devices to store energy during periods of low electricity demand and releasing it during peak hours has become a current trend in electricity utilization.

[0003] Existing off-peak electricity storage methods mainly include lithium battery energy storage and pumped hydro storage. Among them, lithium battery energy storage has a high cost, and lithium batteries will also degrade with the increase of usage time, affecting the energy storage effect; while pumped hydro storage has high requirements for the site and cannot be widely used.

[0004] Therefore, an energy storage and thermal storage device is provided to solve the above-mentioned problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide an energy storage and thermal storage equipment to solve the problems existing in the prior art, reduce costs, and facilitate widespread use.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides an energy storage and thermal energy storage device, including an energy storage and thermal energy storage body, wherein the energy storage and thermal energy storage body includes:

[0008] Heat storage materials;

[0009] A heating element is disposed within the heat storage material and is used to heat the heat storage material;

[0010] A heat exchange assembly includes a bottom chamber, heat exchange tubes, and a top chamber. The bottom chamber and the top chamber are respectively located at the bottom and top of the heat storage material. The bottom chamber is connected to a medium inlet pipe for introducing the heat exchange medium. Multiple heat exchange tubes are provided, with the bottom of any one of the heat exchange tubes communicating with the top of the bottom chamber, and the top of each tube passing upward through the heat storage material and communicating with the bottom of the top chamber. The top chamber is connected to a medium outlet pipe for discharging the heated heat exchange medium.

[0011] Preferably, it also includes an outer shell, which is wrapped around the outside of the heat storage material, and the outside of the outer shell is also wrapped with an insulation layer.

[0012] Preferably, the heat storage material is a solid heat storage material, which is cast from heat storage material;

[0013] The thermal storage material includes basalt particles, quartz sand, kaolinite particles, magnesium oxide particles, and a binder. The weight ratio of the basalt particles, quartz sand, kaolinite particles, magnesium oxide particles, and the binder is 70-80% : 1-4% : 3-4% : 8-10% : 10-12%.

[0014] Preferably, the heat storage material is provided with a heating channel, and the heating element is disposed in the heating channel;

[0015] The heating channels are evenly distributed in multiple ways, and each heating channel contains a heating element.

[0016] Preferably, the outer wall of the heat exchange tube is coated with a high-temperature release agent.

[0017] Preferably, the heat storage material is a granular heat storage material, which is filled inside the outer shell. A heating tube is also provided inside the granular heat storage material, and the heating element is disposed inside the heating tube.

[0018] The heating tubes are evenly distributed in multiple places, and each heating tube contains a heating element.

[0019] Preferably, the particulate thermal storage material includes basalt particles, quartz sand, kaolinite particles, and magnesium oxide particles.

[0020] Preferably, the outer shell is further provided with multiple horizontal partitions from bottom to top, and the horizontal partitions are provided with multiple material passage holes to allow the granular heat storage material to pass through.

[0021] Preferably, the system further includes a circulating air system, which comprises a circulating fan, a ventilation box, an air inlet pipe, and an air outlet pipe. The ventilation box is located inside the outer shell, with one side connected to the air inlet pipe and the other side connected to the air outlet pipe. Both the air inlet pipe and the air outlet pipe extend into the granular heat storage material, and the air outlet pipe is provided with an air outlet, while the air inlet pipe is provided with an air inlet. The circulating fan includes a motor and fan blades. The fan blades are disposed inside the ventilation box, and the motor is fixed to the outside of the outer shell. The output shaft of the motor extends into the ventilation box and is connected to the fan blades. The motor drives the fan blades to rotate, thereby enabling air to enter through the air inlet pipe and exit through the air outlet pipe.

[0022] Both the air inlet and the air outlet are arranged facing downwards.

[0023] Preferably, the heating element is a resistance heating element; wherein the heating element can be connected to mains power to utilize off-peak electricity for heating, and / or the heating element is also connected to a wind power generation device and / or a solar power generation device.

[0024] Preferably, it further includes a temperature sensor disposed within the heat storage material for detecting the temperature of the heat storage material; wherein, the temperature sensor is also signal-connected to an intelligent controller, the intelligent controller is signal-connected to the heating element, the temperature sensor is capable of transmitting the detected temperature data to the intelligent controller, and the intelligent controller controls the switching on and off of the heating element based on the temperature data.

[0025] Preferably, a partition plate is provided in the bottom cavity, which can divide the bottom cavity into multiple compartments. The top of the partition plate is connected to the top plate of the bottom cavity, and the bottom is connected to the bottom plate of the bottom cavity. Each partition plate is provided with a through hole so that all the compartments can be connected.

[0026] Preferably, the heat exchange medium is pure water, the bottom chamber is a water inlet chamber, the top chamber is an air outlet chamber, the water inlet chamber is connected to a water storage tank through the medium inlet pipe for introducing pure water, and a water supply pump is also provided on the medium inlet pipe; the air outlet chamber is connected to the medium outlet pipe for discharging water vapor.

[0027] The water inlet chamber is also provided with a drain outlet, which is connected to the water storage tank through a drain pipe, and a drain pump is also provided on the drain pipe.

[0028] Preferably, the heat exchange medium is gas, the bottom chamber is an air inlet chamber, the top chamber is an air outlet chamber, the air inlet chamber is connected to a gas supply device through the medium inlet pipe for introducing gas, and the air outlet chamber is connected to the medium outlet pipe for discharging high-temperature gas.

[0029] Preferably, the energy storage and thermal storage body is a cuboid or a cylinder;

[0030] Furthermore, the energy storage and thermal storage body is provided in multiple sets, and the multiple sets of energy storage and thermal storage bodies are evenly distributed in an array.

[0031] The present invention achieves the following technical advantages over the prior art:

[0032] This utility model discloses an energy storage and thermal storage equipment, which mainly includes an energy storage and thermal storage body. The energy storage and thermal storage body mainly includes: a thermal storage material; a heating element disposed inside the thermal storage material for heating the thermal storage material; and a heat exchange assembly, which includes a bottom chamber, heat exchange tubes, and a top chamber. The bottom chamber and the top chamber are respectively disposed at the bottom and top of the thermal storage material. The bottom chamber is connected to a medium inlet pipe for introducing the heat exchange medium. Multiple heat exchange tubes are provided, and the bottom of any one of the heat exchange tubes is connected to the top of the bottom chamber, and the top of each tube passes upward through the thermal storage material and is connected to the bottom of the top chamber. The top chamber is connected to a medium outlet pipe for discharging the heated heat exchange medium.

[0033] In this invention, a heating element heats the heat storage material, storing energy within it. A heat exchange medium is then introduced into the bottom chamber through a medium inlet pipe, enters the heat exchange tube to absorb the heat energy from the stored material, and then enters the top chamber and is discharged through a medium outlet pipe for use. This invention utilizes a heat storage material for energy and heat storage, which, compared to traditional energy storage batteries, effectively reduces costs and extends service life. Compared to traditional pumped hydro storage, it has no special site requirements and is easy to promote and apply. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a three-dimensional structural diagram of the energy storage and thermal storage body in Embodiment 1 of this utility model;

[0036] Figure 2 for Figure 1 Front view of the main body of the thermal energy storage system in China;

[0037] Figure 3 This is a schematic diagram of the heating element arrangement in Embodiment 1 of this utility model;

[0038] Figure 4 This is a cross-sectional view of the energy storage and thermal storage body in Embodiment 1 of this utility model;

[0039] Figure 5 This is a cross-sectional view of the bottom chamber in Embodiment 1 of this utility model;

[0040] Figure 6This is a three-dimensional structural diagram of another energy storage and heat storage body (using gas as the heat exchange medium) in Embodiment 1 of this utility model;

[0041] Figure 7 This is a three-dimensional structural diagram of the circular energy storage and thermal storage body in Embodiment 1 of this utility model;

[0042] Figure 8 This is a three-dimensional structural diagram of the energy storage and thermal storage body in Embodiment 2 of this utility model;

[0043] Figure 9 This is a schematic diagram showing the distribution of heat exchange tubes and heating tubes in Embodiment 2 of this utility model;

[0044] Figure 10 This is a top view schematic diagram of the distribution of heat exchange tubes and heating tubes in Embodiment 2 of this utility model.

[0045] In the diagram: 100-Energy storage and thermal storage main body, 101-Storage material, 102-Top chamber, 103-Bottom chamber, 104-Water tank, 105-Water supply pump, 106-Medium inlet pipe, 107-Medium outlet pipe, 108-Drain pipe, 109-Heating channel, 110-Drain pump, 111-Heating element, 112-Heat exchange tube, 113-Spacing plate, 114-Through hole, 115-Outlet chamber, 116-Inlet chamber, 117-Temperature sensor, 118-Circulating air system, 119-Outer shell, 120-Heating tube. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] The purpose of this utility model is to provide an energy storage and thermal storage equipment to solve the problems existing in the prior art, reduce costs, and facilitate widespread use.

[0048] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] Example 1

[0050] like Figures 1-7 As shown, this embodiment provides an energy storage and thermal energy storage device, mainly including an energy storage and thermal energy storage body 100, which mainly includes:

[0051] Thermal storage materials are used to store thermal energy.

[0052] A heating element 111 is disposed inside the heat storage material 101 and is used to heat the heat storage material 101;

[0053] A heat exchange assembly includes a bottom chamber 103, heat exchange tubes 112, and a top chamber 102. The bottom chamber 103 and the top chamber 102 are respectively disposed at the bottom and top of the heat storage material 101. The bottom chamber 103 is connected to a medium inlet pipe 106 for introducing the heat exchange medium. Multiple heat exchange tubes 112 are provided, and the bottom of any one of the heat exchange tubes 112 is connected to the top of the bottom chamber 103, and the top of each tube passes upward through the heat storage material 101 and is connected to the bottom of the top chamber 102. The top chamber 102 is connected to a medium outlet pipe 107 for discharging the heated heat exchange medium for subsequent use.

[0054] In this embodiment, the heat storage material 101 is heated by the heating element 111, which can store thermal energy in the heat storage material 101. Then, the heat exchange medium is added into the bottom chamber 103 through the medium inlet pipe 106, and then enters the heat exchange tube 112 to absorb the thermal energy of the heat storage material 101. After absorbing heat, the heat exchange medium enters the top chamber 102 and is discharged through the medium outlet pipe 107 for use. In this embodiment, the heat storage material 101 is used for energy storage and heat storage. Compared with traditional energy storage batteries, it can effectively reduce costs and extend service life. Compared with traditional pumped hydro storage, it has no special requirements for the site and is easy to promote and apply.

[0055] In this embodiment, the heat storage material 101 is preferably a solid heat storage material, which is a whole and is integrally cast from heat storage material. A heating channel 109 is provided inside the solid heat storage material, and a heating element 111 is disposed within the heating channel 109. Multiple heating channels 109 are evenly distributed, and each heating channel 109 penetrates the solid heat storage material horizontally. Each heating channel 109 contains a heating element 111. Through the evenly distributed multiple heating channels 109 and the heating elements 111 within them, different locations of the solid heat storage material can be heated, thereby achieving comprehensive heating of the solid heat storage material and improving the heating effect.

[0056] In a preferred embodiment, the plurality of heating channels 109 can be arranged in an array, for example, in a rectangular array with a spacing of 20 mm between adjacent heating channels 109, or in a circular array, or in other arrangements, such as the plurality of heating channels 109 being arranged in a crisscross pattern, or in a surrounding or spiral arrangement.

[0057] In this embodiment, the heating element 111 is preferably a resistance heating element, such as a resistance heating wire, which can extend into the heating channel 109 to heat the solid heat storage material. The resistance heating wire is preferably a spiral heating wire to improve the heating effect. The heating element 111 can be connected to mains power to utilize off-peak electricity for heating, reducing electricity costs. Alternatively, the heating element 111 can be directly connected to wind power generation devices and solar power generation devices without the need for an inverter, utilizing wind or solar power for power generation. It should be noted that the wind power generation devices and solar power generation devices are mature existing technologies in the art, and will not be described in detail in this embodiment.

[0058] In this embodiment, the heating element 111 is preferably connected in a three-phase star connection. With this connection, when the three-phase load is completely symmetrical (all heating elements have the same resistance), the neutral line current is zero, making the three-phase current balanced and preventing excess current from returning to the grid. When using off-peak electricity for heating, the balanced load will not cause three-phase imbalance in the grid, avoiding additional line losses, reduced transformer efficiency, and adverse effects on other electrical equipment caused by imbalance, which meets the requirements of the power grid company. When using wind power generation, the three-phase wind turbine itself outputs three-phase electricity. Connecting it to a three-phase balanced load can make the three-phase wind turbine run more smoothly, reduce vibration and torque fluctuations, and improve power generation efficiency and equipment life. Solar power generation devices also benefit from balanced loads.

[0059] Moreover, the standard industrial three-phase voltage (line voltage) is 380V. When a three-phase power supply is connected in a star configuration, the actual voltage that each heating element 111 bears is the phase voltage of 220V (380V / √3≈220V). This allows the rated voltage of a single heating element 111 to be designed to the common 220V level, making it easy to manufacture, technologically mature, and cost-effective.

[0060] Alternatively, the heating element 111 can be connected in other ways as needed, such as a delta connection.

[0061] In this embodiment, a temperature sensor 117 is also included. The temperature sensor 117 is disposed within the heat storage material 101 and is used to detect the temperature of the heat storage material 101. The temperature sensor 117 is also signal-connected to an intelligent controller, which is signal-connected to the heating element 111. The temperature sensor 117 can transmit the detected temperature data to the intelligent controller, which controls the switching on and off of the heating element 111 based on the temperature data. Specifically, when the temperature sensor 117 detects that the temperature of the heat storage material 101 reaches a preset temperature, the intelligent controller intelligently controls the heating element 111 to turn off, stopping heating to prevent excessively high heating temperatures from causing the solid heat storage material to crack or the heating element 111 to be damaged. The preset temperature can be 500-600℃.

[0062] Multiple temperature sensors 117 may be arranged from bottom to top to detect the temperature at different locations.

[0063] In this embodiment, the outer wall of the heat exchange tube 112 is also coated with a high-temperature release agent. When the solid heat storage material is heated by the heating element 111, the solid heat storage material and the heat exchange tube 112 inside it expand due to the heat. Since the expansion coefficients of the solid heat storage material and the heat exchange tube 112 are different, the heat exchange tube 112 will move relative to the solid heat storage material. Therefore, coating the outer wall of the heat exchange tube 112 with a high-temperature release agent reduces the coefficient of friction between the heat exchange tube 112 and the solid heat storage material, facilitating relative sliding and preventing damage to the heat exchange tube 112 or cracking of the solid heat storage material due to a large coefficient of friction. The heat exchange tube 112 can be a metal tube, such as a stainless steel tube, and the high-temperature release agent can be a powder release agent such as graphite powder or mica powder, or other release agents.

[0064] Furthermore, it should be noted that the top chamber 102 is not fixedly connected to the solid heat storage material. When the heat exchange tube 112 expands, it can drive the top chamber 102 to move upward and detach from the solid heat storage material.

[0065] In this embodiment, the heat exchange tube 112 can be a vertically arranged straight tube or a curved tube; alternatively, the heat exchange tube 112 can be a finned tube, that is, heat exchange fins are also sleeved on the outside of the heat exchange tube 112 to increase the heat exchange area and improve the heat exchange effect; wherein, the heat exchange fins are only sleeved on the outside of the heat exchange tube 112 and are not fixed to the heat exchange tube 112, or only at both ends are fixed to the heat exchange tube 112, so that when the heat exchange tube 112 expands, it can detach from the heat exchange fins so as to slide relative to the solid heat storage material.

[0066] Furthermore, the two ends of the heat exchange tube 112 are respectively welded to the bottom plate of the top chamber 102 and the top plate of the bottom chamber 103, and the top end of the heat exchange tube 112 extends into the top chamber 102 by a certain length and the bottom end extends into the bottom chamber 103 by a certain length to facilitate welding; wherein, the above-mentioned extension length can be selected according to specific needs, preferably about 5mm.

[0067] In this embodiment, a partition plate 113 is provided inside the bottom chamber 103. The partition plate 113 can divide the bottom chamber 103 into multiple compartments. Specifically, multiple partition plates 113 are arranged in a crisscross pattern, which can form a honeycomb structure inside the bottom chamber 103. The top of the partition plate 113 is connected to the top plate of the bottom chamber 103, and the bottom is connected to the bottom plate of the bottom chamber 103. The partition plate 113 can support the solid heat storage material and prevent the bottom chamber 103 from being crushed and collapsed. Furthermore, each partition plate 113 is provided with a through hole 114 so that all the compartments can be connected to facilitate the flow of the heat exchange medium.

[0068] In this embodiment, the heat exchange medium can be pure water, the bottom chamber 103 is the water inlet chamber, and the top chamber 102 is the air outlet chamber 115. The water inlet chamber is connected to a water storage tank 104 through the medium inlet pipe 106 for introducing pure water. A water supply pump 105 is also provided on the medium inlet pipe 106 to provide power for the flow of pure water. The water supply pump 105 is preferably a booster pump. The air outlet chamber 115 is connected to the medium outlet pipe 107 for discharging water vapor for subsequent use. For example, it can be used in factories that require water vapor, such as wineries.

[0069] In this embodiment, a drain outlet is also provided on the water inlet chamber. The drain outlet is connected to the water storage tank 104 through a drain pipe 108. A drain pump 110 is also provided on the drain pipe 108. When the output water vapor meets the usage requirements and no more water vapor is needed, the water inlet is stopped, the drain outlet is opened, and the high-temperature water is discharged into the water storage tank 104. This can recover and utilize the waste heat of the high-temperature water and prevent the high-temperature water in the heat exchange tube 112 from continuing to absorb heat and vaporize, which would cause the pressure in the heat exchange tube 112 to be too high and lead to the damage of the heat exchange tube 112 and the solid heat storage material. Alternatively, the water can be directly discharged to the outside through the drain outlet.

[0070] Alternatively, the heat exchange medium can also be a gas. In this case, the bottom chamber 103 is the air inlet chamber 116, and the top chamber 102 is the air outlet chamber 115. The air inlet chamber 116 is connected to a gas supply device through the medium inlet pipe 106 for introducing gas. The air outlet chamber 115 is connected to the medium outlet pipe 107 for discharging high-temperature gas. In this case, it can be used as a hot air blower. The gas supply device can be selected according to specific working needs. For example, it can be an air pump, and the introduced gas can be air or other gases.

[0071] In this embodiment, a control valve is also provided on the medium outlet pipe 107 to facilitate control of the switch. Preferably, the control valve is an electrically controlled valve, which can be electrically controlled to prevent burns when manually switching on and off. Furthermore, electrically controlled valves can also be provided on the medium inlet pipe 106 and the drain pipe 108. The electrically controlled valve is signal-connected to the intelligent controller and the switch is controlled by the intelligent controller.

[0072] In this embodiment, the intelligent controller can be selected as needed, for example, it can be a PLC controller, and the intelligent controller can be connected to a control panel, which can be operated by the staff.

[0073] In this embodiment, the thermal storage material may include basalt particles, quartz sand, kaolinite particles, magnesium oxide particles, and binders, etc. The weight ratio of the basalt particles, quartz sand, kaolinite particles, magnesium oxide particles, and binders is 70-80%: 1-4%: 3-4%: 8-10%: 10-12%; wherein, the binder can be selected according to specific working needs, preferably refractory cement. Among them, basalt particles account for the largest proportion of the main material (70-80%). They have high specific heat capacity and thermal stability, and can maintain structural stability for a long time at high temperatures. They are excellent heat storage carriers and have low cost. Magnesium oxide particles (8-10%) also have high melting point and heat capacity, which further enhances the overall heat storage capacity. Quartz sand (1-4%) and kaolinite particles (3-4%) can moderately improve the thermal conductivity of the material, promote the uniform transfer of heat inside the heat storage material, and avoid local overheating or excessive thermal resistance. The binder (10-12%, such as refractory cement) ensures that the material has sufficient mechanical strength and structural integrity after casting and molding, and prevents cracking or pulverization at high temperatures.

[0074] In this embodiment, basalt particles, quartz sand, kaolinite particles, magnesium oxide particles, and refractory cement are used as the main raw materials. These materials have high specific heat capacity and low cost, which can reduce the overall cost while ensuring the heat storage effect. Moreover, the above-mentioned heat storage materials have high melting points and can withstand high heating temperatures to heat the heat exchange medium in the heat exchange tube 112. In this embodiment, the heat storage material is cast into a solid heat storage material, and the heat exchange tube 112 is cast into the solid heat storage material, which can ensure sufficient contact and improve the heat exchange effect.

[0075] Alternatively, other materials with high specific heat capacity and low cost can be selected as heat storage materials as needed.

[0076] In this embodiment, the energy storage and heat storage body 100 can be a cuboid or a cylinder, or other shapes can be selected as needed. The shapes of the top chamber 102 and the bottom chamber 103 match the shape of the energy storage and heat storage body 100.

[0077] In this embodiment, an outer shell 119 is also included. The outer shell 119 is wrapped around the outside of the heat storage material 101. The outer shell 119 can protect the heat storage material 101. Even if the solid heat storage material breaks, the presence of the outer shell 119 can prevent the solid heat storage material from scattering and allow it to continue to work normally. Moreover, the outer shell 119 can also be used as a template during casting.

[0078] Furthermore, the outer side of the outer shell 119 is also wrapped with an insulation layer for heat preservation and to reduce heat loss. The insulation layer can be selected according to specific working needs, such as ceramic fiber cotton or rock wool board.

[0079] In this embodiment, multiple sets of the energy storage and heat storage body 100 can be provided, and the multiple sets of the energy storage and heat storage body 100 are evenly distributed in an array. By providing multiple sets of the energy storage and heat storage body 100, the energy storage and heat storage capacity can be improved.

[0080] Example 2

[0081] This embodiment is a modification based on Embodiment 1, and its main difference from Embodiment 1 is:

[0082] like Figures 8-10As shown, in this embodiment, the heat storage material 101 is a granular heat storage material. In this case, an outer shell 119 must be provided, and the granular heat storage material is filled in the outer shell 119. A heating tube 120 is also provided in the granular heat storage material, and the heating element 111 is provided in the heating tube 120. The heating tube 120 can effectively protect the heating element 111 while ensuring heating. The heating tube 120 can be a non-metallic tube such as a ceramic tube.

[0083] The heating tubes 120 are evenly distributed in multiple locations, and each heating tube 120 penetrates the solid heat storage material in a horizontal direction. Each heating tube 120 is equipped with a heating element 111. Through the evenly distributed heating tubes 120 and the heating elements 111 inside them, different positions of the granular heat storage material can be heated, thereby achieving comprehensive heating of the granular heat storage material and improving the heating effect.

[0084] In a preferred embodiment, the multiple heating tubes 120 can be arranged in an array, for example, in a rectangular array, or in a circular array, or other arrangements can be selected, such as the multiple heating tubes 120 being arranged in a crisscross pattern, or in a surrounding or spiral arrangement.

[0085] In this embodiment, the particulate thermal storage material may include basalt particles, quartz sand, kaolinite particles, and magnesium oxide particles, etc.

[0086] In this embodiment, the outer shell 119 is further provided with multiple horizontal partitions from bottom to top, and the horizontal partitions are provided with multiple material passage holes to allow the granular heat storage material to pass through. By providing multiple horizontal partitions, the overall stability of the structure can be improved.

[0087] In this embodiment, a circulating air system 118 is also included. The circulating air system 118 includes a circulating fan, a ventilation box, an air inlet pipe, and an air outlet pipe. The ventilation box is located inside the outer shell 119, with one side connected to the air inlet pipe and the other side connected to the air outlet pipe. Both the air inlet pipe and the air outlet pipe extend into the granular heat storage material. The air outlet pipe is provided with an air outlet, and the air inlet pipe is provided with an air inlet. The circulating fan includes a motor and fan blades. The fan blades are disposed inside the ventilation box. The motor is fixed to the outside of the outer shell 119, and the output shaft of the motor extends into the ventilation box and is connected to the fan blades. The motor drives the fan blades to rotate, which enables the air inlet pipe to be filled and the air outlet pipe to be exhausted, thereby achieving hot air circulation inside the outer shell 119 and improving the heat exchange effect. It also prevents cold air from entering the outer shell 119 or hot air from being discharged from the outer shell 119, reducing heat loss.

[0088] The air inlet pipe and the air outlet pipe can be set horizontally, and multiple pipes can be set side by side to achieve hot air circulation at different locations and improve the heat exchange effect; and the air inlet and the air outlet are both set downward to prevent particulate heat storage material from entering the pipe.

[0089] Furthermore, the circulating air system 118 can be configured in multiple groups from bottom to top to improve the heat exchange effect.

[0090] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An energy storage and thermal storage device, characterized in that: Includes an energy storage and thermal storage body (100), wherein the energy storage and thermal storage body (100) includes: Thermal storage material (101); A heating element (111) is disposed inside the heat storage material (101) and is used to heat the heat storage material (101); The heat exchange assembly includes a bottom chamber (103), a heat exchange tube (112), and a top chamber (102). The bottom chamber (103) and the top chamber (102) are respectively located at the bottom and top of the heat storage material (101). The bottom chamber (103) is connected to a medium inlet pipe (106) for introducing the heat exchange medium. There are multiple heat exchange tubes (112). The bottom of any one of the heat exchange tubes (112) is connected to the top of the bottom chamber (103), and the top of each tube passes upward through the heat storage material (101) and is connected to the bottom of the top chamber (102). The top chamber (102) is connected to a medium outlet pipe (107) for discharging the heated heat exchange medium.

2. The energy storage and thermal energy storage equipment according to claim 1, characterized in that: It also includes an outer shell (119), which is wrapped around the outside of the heat storage material (101), and the outside of the outer shell (119) is also wrapped with an insulation layer.

3. The energy storage and thermal energy storage equipment according to claim 1 or 2, characterized in that: The heat storage material (101) is a solid heat storage material, which is cast from heat storage material.

4. The energy storage and thermal energy storage equipment according to claim 3, characterized in that: The heat storage material (101) is provided with a heating channel (109), and the heating element (111) is disposed in the heating channel (109); The heating channels (109) are evenly distributed in multiple ways, and each heating channel (109) is provided with a heating element (111).

5. The energy storage and thermal storage equipment according to claim 3, characterized in that: The outer wall of the heat exchange tube (112) is coated with a high-temperature release agent.

6. The energy storage and thermal energy storage equipment according to claim 2, characterized in that: The heat storage material (101) is a granular heat storage material, which is filled inside the outer shell (119). A heating tube (120) is also provided inside the granular heat storage material, and the heating element (111) is disposed inside the heating tube (120). The heating tubes (120) are evenly distributed in multiple places, and each heating tube (120) is provided with a heating element (111).

7. The energy storage and thermal storage equipment according to claim 6, characterized in that: The outer shell (119) is also provided with multiple horizontal partitions from bottom to top, and the horizontal partitions are provided with multiple material passage holes, which can allow the granular heat storage material to pass through.

8. The energy storage and thermal energy storage equipment according to claim 6, characterized in that: It also includes a circulating air system (118), which includes a circulating fan, a ventilation box, an air inlet pipe, and an air outlet pipe. The ventilation box is located inside the outer shell (119), with one side connected to the air inlet pipe and the other side connected to the air outlet pipe. Both the air inlet pipe and the air outlet pipe extend into the granular heat storage material, and the air outlet pipe is provided with an air outlet, while the air inlet pipe is provided with an air inlet. The circulating fan includes a motor and fan blades. The fan blades are located inside the ventilation box, and the motor is fixed to the outside of the outer shell (119). The output shaft of the motor extends into the ventilation box and is connected to the fan blades. The motor drives the fan blades to rotate, which enables the air inlet pipe to receive air and the air outlet pipe to discharge air. Both the air inlet and the air outlet are arranged facing downwards.

9. The energy storage and thermal energy storage equipment according to claim 1, characterized in that: The heating element (111) is a resistance heating element; wherein the heating element (111) can be connected to mains power and use off-peak electricity for heating, and / or the heating element (111) is also connected to a wind power generation device and / or a solar power generation device.

10. The energy storage and thermal storage equipment according to claim 9, characterized in that: It also includes a temperature sensor (117), which is disposed inside the heat storage material (101) and is used to detect the temperature of the heat storage material (101); wherein, the temperature sensor (117) is also connected to a smart controller, the smart controller is connected to the heating element (111), the temperature sensor (117) can transmit the detected temperature data to the smart controller, and the smart controller controls the switching of the heating element (111) according to the temperature data.

11. The energy storage and thermal energy storage equipment according to claim 1, characterized in that: The bottom chamber (103) is provided with a partition plate (113), which can divide the bottom chamber (103) into multiple compartments. The top of the partition plate (113) is connected to the top plate of the bottom chamber (103), and the bottom is connected to the bottom plate of the bottom chamber (103). Each partition plate (113) is provided with a through hole (114) so ​​that all the compartments can be connected.

12. The energy storage and thermal energy storage equipment according to claim 1, characterized in that: The heat exchange medium is pure water. The bottom chamber (103) is the water inlet chamber, and the top chamber (102) is the air outlet chamber (115). The water inlet chamber is connected to a water storage tank (104) through the medium inlet pipe (106) for introducing pure water. A water supply pump (105) is also provided on the medium inlet pipe (106). The air outlet chamber (115) is connected to the medium outlet pipe (107) for discharging water vapor. The water inlet chamber is also provided with a drain outlet, which is connected to the water storage tank (104) through a drain pipe (108). A drain pump (110) is also provided on the drain pipe (108).

13. The energy storage and thermal energy storage equipment according to claim 1, characterized in that: The heat exchange medium is gas. The bottom chamber (103) is the air inlet chamber (116), and the top chamber (102) is the air outlet chamber (115). The air inlet chamber (116) is connected to a gas supply device through the medium inlet pipe (106) for introducing gas. The air outlet chamber (115) is connected to the medium outlet pipe (107) for discharging high-temperature gas.

14. The energy storage and thermal energy storage equipment according to claim 1, characterized in that: The energy storage and thermal storage body (100) is a cuboid or a cylinder; Furthermore, the energy storage and thermal storage body (100) is provided in multiple sets, and the multiple sets of energy storage and thermal storage bodies (100) are evenly distributed in an array.

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