Hydrogen energy storage device and hydrogen energy storage method therefor

Abstract

A hydrogen energy storage device and a hydrogen energy storage method therefor, comprising a compression housing (1) and a hydrogen compression system, wherein a compression chamber (24) is provided inside the compression housing (1), an intake hood (2) is mounted on the top surface of the compression housing (1), an extension pipe (3) is mounted on the bottom surface of the intake hood (2), an intake valve (4) is mounted on the bottom surface of the extension pipe (3), and an upper storage tank (5) is mounted on the top surface of the intake hood (2); a pressure sensor monitors the real-time pressure value inside the upper storage tank (5) to determine the hydrogen capacity therein, and then obtains a fluctuation difference value which is analyzed and processed to generate a pressure-increasing signal or a pressure-reducing signal; a liquid level sensor analyzes the remaining space inside a lower storage tank, and processes pressure abnormality signals to obtain a liquid level discharge signal, a hydrogen discharge signal or a pressure-increasing signal; and different received signals respectively control activation of a condensation component or a conversion component to realize allocation of hydrogen storage space.

Description

A hydrogen energy storage device and its hydrogen energy storage method Technical Field

[0001] This invention relates to the field of hydrogen storage technology, and in particular to a hydrogen energy storage device and a hydrogen energy storage method thereof. Background Technology

[0002] Hydrogen energy storage devices are systems that use hydrogen as an energy storage medium. The main principle is to use excess electrical energy (such as wind, solar, or other renewable energy sources) to electrolyze water, breaking it down into hydrogen and oxygen. The hydrogen can then be stored and reused when needed. Hydrogen storage technologies can be categorized into several main types, including high-pressure gas storage, liquid hydrogen storage, and metal hydride storage. High-pressure gas storage compresses hydrogen to high pressure for storage, typically using containers made of steel or composite materials, and is suitable for large-scale storage and transportation.

[0003] Existing hydrogen energy storage devices generally possess high pressure resistance and explosion-proof capabilities. They are constructed by introducing generated hydrogen into a storage tank via a pipeline, and then storing the hydrogen in the tank. However, current hydrogen energy storage technology cannot achieve free conversion between liquid and gaseous states of hydrogen. This means that existing technologies can only transport large amounts of hydrogen within the storage device, increasing the internal hydrogen pressure to achieve the storage of large quantities of hydrogen. Consequently, existing technologies have poor space utilization in hydrogen storage devices.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to analyze the pressure of the upper storage tank and the storage space of the lower storage tank through a nitrogen compression system. When the pressure in the upper storage tank is high, a rotary motor and a drive motor can be started. The drive motor drives the crankshaft to rotate, which compresses the hydrogen in the compression tank through a piston. The hydrogen is then condensed into liquid and stored inside the lower storage tank, thereby releasing the pressure inside the upper storage tank. When the pressure in the upper storage tank is lower than a threshold, a transfer pump will input the liquefied hydrogen inside the lower storage tank to the inner wall of the upper storage tank through a conversion pipe. When the heating belt installed on the outer surface of the conversion pipe is activated, the liquefied hydrogen inside the conversion pipe will evaporate, thus changing from a liquid to a gaseous state, achieving free conversion of hydrogen and making better use of the storage space.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hydrogen energy storage device and a hydrogen energy storage method thereof, comprising a compression shell, a compression groove provided inside the compression shell, an air inlet hood installed on the top surface of the compression shell, an extension pipe installed on the bottom surface of the air inlet hood, an air inlet valve installed on the bottom surface of the extension pipe, an upper storage tank installed on the top surface of the air inlet hood, a discharge valve installed on the bottom surface of the inner wall of the upper storage tank, an air inlet hole opened on the top surface of the upper storage tank, an exhaust valve installed on the outer surface of the upper storage tank, an explosion-proof shell installed on the outer surface of the upper storage tank, a lower storage tank installed on the bottom of the inner wall of the explosion-proof shell, a bearing installed on the inner wall of the compression shell, a crankshaft installed on the inner wall of the bearing, a piston installed on the outer surface of the crankshaft, a drive motor installed on one side surface of the compression shell, a condensation assembly installed on the bottom surface of the compression shell, and a conversion assembly installed on the outer surface of the explosion-proof shell.

[0007] Furthermore, there are two compression grooves, which are equidistantly distributed inside the compression housing; there are two bearings, which are equidistantly distributed on the inner wall of the compression housing; and there are two pistons, which are equidistantly distributed on the outer surface of the crankshaft, and the pistons are rotatably connected to the crankshaft.

[0008] Furthermore, the outer surfaces of the two pistons are in movable contact with the inner wall of the compression groove, the bottom surface of the air intake shroud is fixedly connected to the top surface of the compression shell, the top surface of the air intake shroud is fixedly connected to the bottom surface of the upper storage tank, there are two extension tubes, the two extension tubes are equidistantly distributed on the bottom surface of the air intake shroud, the two extension tubes extend from the inner wall of the compression shell to its bottom side surface, and one end of each of the two extension tubes is correspondingly distributed with an air intake valve, the air intake valve is connected to the inner wall of the compression groove.

[0009] Furthermore, one side surface of the drive motor is fixedly connected to one side surface of the compression housing, the output end of the drive motor is fixedly connected to one end of the crankshaft, the outer surfaces of the two bearings are fixedly connected to the inner wall of the compression housing, and the inner walls of the two bearings are rotatably connected to the outer surface of the crankshaft.

[0010] Furthermore, the condensation assembly includes a three-way pipe, one end of which is equipped with a heat exchange tube. The inner wall of the explosion-proof shell is provided with an installation groove, and a positioning plate is installed on the inner wall of the installation groove. A rotary motor is installed on one side surface of the positioning plate, and a heat exchange fan is installed on the other side surface of the positioning plate. The three-way pipe is installed on the bottom surface of the compression shell.

[0011] Furthermore, both ends of the three-way pipe extend from the bottom surface of the compression shell to the interior of the compression groove, and the three-way pipe is interconnected with the interior of the compression groove. The other end of the three-way pipe is interconnected with the heat exchange pipe. The outer surface of the positioning plate is fixedly connected to the inner wall of the mounting groove. One side surface of the rotary motor is fixedly connected to one side surface of the positioning plate. One side surface of the heat exchange fan is fixedly connected to the output end of the rotary motor.

[0012] Furthermore, the conversion assembly includes a delivery pump, a conversion tube is mounted on the top surface of the delivery pump, a heating belt is mounted on the outer surface of the conversion tube, and the delivery pump is mounted on one side surface of the explosion-proof housing.

[0013] Furthermore, the output end of the delivery pump is connected to the interior of the lower storage tank 10 via a pipe, the output end of the delivery pump is connected to one end of the conversion pipe, the other end of the conversion pipe is connected to the interior of the upper storage tank, and the heating belt is installed in a spiral shape on the outer surface of the conversion pipe.

[0014] Step 1: Obtain real-time hydrogen pressure data in the upper storage tank using a pressure sensor installed on the inner wall of the upper storage tank, and calculate the fluctuation difference between the real-time hydrogen pressure data and the pressure threshold based on the preset pressure threshold.

[0015] The specific process for calculating the fluctuation difference is as follows:

[0016] S101. Obtain real-time hydrogen pressure data Pi in the upper storage tank through a pressure sensor installed on the inner wall of the upper storage tank;

[0017] S102. Obtain the preset pressure threshold P0, and calculate the fluctuation difference Wi according to the following formula: i = 1, 2, 3, ..., n, where n represents the number of real-time hydrogen pressure data;

[0018] Step 2: Obtain and analyze the fluctuation difference value, obtain the preset fluctuation difference threshold, determine the absolute value of the fluctuation difference value to generate a pressure anomaly signal, and after obtaining the pressure anomaly signal, determine whether to generate a pressure increase signal or a pressure decrease signal based on the actual value of the fluctuation difference threshold.

[0019] S201. Obtain the preset fluctuation difference threshold Wmin, determine the absolute value of the fluctuation difference, i.e., |Wi|. If |Wi| is greater than or equal to Wmin, generate a pressure anomaly signal.

[0020] S202. After obtaining the abnormal pressure signal, further determine the actual value of the fluctuation difference threshold, i.e., Wi. If Wi is greater than 0, then generate a pressure reduction signal.

[0021] If Wi is less than 0, a boost signal is generated;

[0022] Step 3: Obtain and process the abnormal pressure signal. The real-time liquid level data of liquid hydrogen in the lower storage tank is obtained by the liquid level sensor installed on the inner wall of the lower storage tank. The storage space data of the lower storage tank is obtained. The amount of storage space that can be stored in the lower storage tank is calculated based on the storage space data and the real-time liquid level data. The preset minimum storage threshold Vh is obtained. The amount of storage space is determined to generate a liquid level discharge signal or a hydrogen discharge signal.

[0023] The specific process for generating liquid level discharge signals or hydrogen discharge signals is as follows:

[0024] S301. Obtain the storage space data of the lower storage tank, wherein the storage space data includes the radius of the lower storage tank and the overall height of the lower storage tank, and calculate the storable space Vb according to the following formula: Vb=πr 2 (H-h0), where r is the radius of the lower storage tank, H is the overall height of the lower storage tank, and h0 is the real-time liquid hydrogen level data;

[0025] S302. Obtain the preset minimum storage threshold Vh. If the available storage space is greater than or equal to the minimum storage threshold, generate a liquid level discharge signal.

[0026] If the available storage space is less than the minimum storage threshold, a hydrogen emission signal is generated.

[0027] Step 4: After obtaining the liquid level discharge signal, control the transfer pump and heating belt to start, convert the liquid hydrogen into gaseous hydrogen, and then input the hydrogen into the interior of the upper storage tank for storage through the conversion pipe;

[0028] After receiving the hydrogen emission signal, control the exhaust valve to start directly emitting hydrogen;

[0029] After receiving the pressure boosting signal, the drive motor and rotary motor are controlled to convert the hydrogen in the upper storage tank into liquid and input it into the lower storage tank to ensure the pressure in the upper storage tank is stable.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] The hydrogen energy storage device and its hydrogen energy storage method monitor the real-time pressure value in the upper storage tank through a pressure sensor to determine the internal hydrogen capacity. Then, by acquiring and analyzing the fluctuation difference, a pressure boosting signal or a pressure depressurization signal is generated. The remaining space in the lower storage tank is analyzed through a liquid level sensor, and abnormal pressure signals are processed to obtain liquid level discharge signals, hydrogen discharge signals, or pressure boosting signals. The different signals received are then used to control the activation of the condensation component or the conversion component to achieve the allocation of hydrogen storage space. Attached Figure Description

[0032] Figure 1 shows a schematic diagram of the overall external structure of the present invention;

[0033] Figure 2 shows a schematic diagram of the overall internal structure of the present invention;

[0034] Figure 3 shows a schematic diagram of the upper storage tank structure of the present invention;

[0035] Figure 4 shows a schematic diagram of the upper storage tank of the present invention from another angle;

[0036] Figure 5 shows a schematic diagram of the internal structure of the upper storage tank of the present invention;

[0037] Figure 6 shows a schematic diagram of the internal structure of the compression shell of the present invention;

[0038] Figure 7 shows a schematic diagram of the internal structure of the compression shell of the present invention from another angle;

[0039] Figure 8 shows a schematic diagram of the condenser assembly structure of the present invention.

[0040] Legend: 1. Compression shell; 2. Inlet hood; 3. Extension pipe; 4. Inlet valve; 5. Upper storage tank; 6. Discharge valve; 7. Inlet port; 8. Exhaust valve; 9. Explosion-proof shell; 10. Lower storage tank; 11. Bearing; 12. Crankshaft; 13. Piston; 14. Drive motor; 15. T-pipe; 16. Heat exchange pipe; 17. Mounting slot; 18. Positioning plate; 19. Rotary motor; 20. Heat exchange fan; 21. Transfer pump; 22. Conversion pipe; 23. Heating belt; 24. Compression tank. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1:

[0043] As shown in Figures 1-8, a hydrogen energy storage device and its hydrogen energy storage method include a compression shell 1, a compression groove 24 inside the compression shell 1, an air inlet hood 2 installed on the top surface of the compression shell 1, an extension pipe 3 installed on the bottom surface of the air inlet hood 2, an air inlet valve 4 installed on the bottom surface of the extension pipe 3, an upper storage tank 5 installed on the top surface of the air inlet hood 2, an exhaust valve 6 installed on the bottom surface of the inner wall of the upper storage tank 5, an air inlet hole 7 opened on the top surface of the upper storage tank 5, an exhaust valve 8 installed on the outer surface of the upper storage tank 5, an explosion-proof shell 9 installed on the outer surface of the upper storage tank 5, a lower storage tank 10 installed on the bottom of the inner wall of the explosion-proof shell 9, a bearing 11 installed on the inner wall of the compression shell 1, a crankshaft 12 installed on the inner wall of the bearing 11, a piston 13 installed on the outer surface of the crankshaft 12, a drive motor 14 installed on one side surface of the compression shell 1, a condensation assembly installed on the bottom surface of the compression shell 1, and a conversion assembly installed on the outer surface of the explosion-proof shell 9.

[0044] There are two compression grooves 24, which are equidistantly distributed inside the compression housing 1. There are two bearings 11, which are equidistantly distributed on the inner wall of the compression housing 1. There are two pistons 13, which are equidistantly distributed on the outer surface of the crankshaft 12. The pistons 13 and the crankshaft 12 are rotatably connected.

[0045] The outer surfaces of the two pistons 13 are in contact with the inner wall of the compression tank 24. The bottom surface of the intake hood 2 is fixedly connected to the top surface of the compression housing 1. The top surface of the intake hood 2 is fixedly connected to the bottom surface of the upper storage tank 5. There are two extension pipes 3, which are equidistantly distributed on the bottom surface of the intake hood 2. The two extension pipes 3 extend from the inner wall of the compression housing 1 to its bottom side surface. One end of each of the two extension pipes 3 is correspondingly distributed with an intake valve 4. The intake valve 4 is connected to the inner wall of the compression tank 24. Because the pistons 13 are installed on the outer surface of the crankshaft 12, when the crankshaft 12 rotates, it will drive the pistons 13 on its outer surface to move up and down on the inner wall of the compression tank 24. When the pistons 13 move up and down, they will compress the hydrogen in the compression tank 24.

[0046] One side surface of the drive motor 14 is fixedly connected to one side surface of the compression housing 1. The output end of the drive motor 14 is fixedly connected to one end of the crankshaft 12. The outer surfaces of the two bearings 11 are fixedly connected to the inner wall of the compression housing 1. The inner walls of the two bearings 11 are movably rotatably connected to the outer surface of the crankshaft 12. When the pressure is higher than the threshold, it means that there is more hydrogen stored in the upper storage tank 5. At this time, the discharge valve 6 and the drive motor 14 and the rotary motor 19 will start synchronously. When the discharge valve 6 is started, the hydrogen in the upper storage tank 5 will enter the interior of the extension pipe 3 from the air inlet hood 2. Finally, the hydrogen will be discharged by the air inlet valve 4.

[0047] The condensation assembly includes a three-way pipe 15, with a heat exchange tube 16 installed at one end of the three-way pipe 15. An installation groove 17 is provided on the inner wall of the explosion-proof housing 9, and a positioning plate 18 is installed on the inner wall of the installation groove 17. A rotary motor 19 is installed on one side surface of the positioning plate 18, and a heat exchange fan 20 is installed on the other side surface of the positioning plate 18. The three-way pipe 15 is installed on the bottom surface of the compression housing 1. When the rotary motor 19 starts, it drives the heat exchange fan 20 installed at its output end to rotate. When the heat exchange fan 20 rotates, the airflow will come into contact with the outer surface of the heat exchange tube 16. The generated airflow will carry away the heat energy generated by the hydrogen in the heat exchange tube 16, thereby realizing the condensation function.

[0048] Both ends of the three-way pipe 15 extend from the bottom surface of the compression shell 1 into the interior of the compression tank 24. The three-way pipe 15 and the interior of the compression tank 24 are interconnected. The other end of the three-way pipe 15 is interconnected with the heat exchange tube 16. The outer surface of the positioning plate 18 is fixedly connected to the inner wall of the mounting groove 17. One side surface of the rotary motor 19 is fixedly connected to one side surface of the positioning plate 18. One side surface of the heat exchange fan 20 is fixedly connected to the output end of the rotary motor 19. After being compressed on the inner wall of the compression tank 24, hydrogen is input into the inner wall of the three-way pipe 15 and enters the interior of the heat exchange tube 16 through the three-way pipe 15.

[0049] The conversion assembly includes a transfer pump 21, a conversion tube 22 is mounted on the top surface of the transfer pump 21, a heating belt 23 is mounted on the outer surface of the conversion tube 22, and the transfer pump 21 is mounted on one side surface of the explosion-proof housing 9. When the transfer pump 21 is started, it draws liquid hydrogen from the lower storage tank 10 and discharges the drawn liquid hydrogen into the inner wall of the conversion tube 22.

[0050] The output end of the delivery pump 21 is connected to the interior of the lower storage tank 10 through a pipe. The output end of the delivery pump 21 is connected to one end of the conversion pipe 22, and the other end of the conversion pipe 22 is connected to the interior of the upper storage tank 5. The heating belt 23 is installed in a spiral shape on the outer surface of the conversion pipe 22. When the heating belt 23 is activated and generates heat, it will transfer the heat through the conversion pipe 22 to the liquid hydrogen being transported inside. When the liquid hydrogen begins to evaporate during the heating process, it will be converted into gaseous hydrogen.

[0051] The workflow of this invention is as follows: When hydrogen needs to be stored, the hydrogen to be stored is introduced into the upper storage tank 5 through the air inlet 7. The hydrogen introduced into the upper storage tank 5 is stored in the upper storage tank 5. When a large amount of hydrogen is stored in the upper storage tank 5, the pressure inside the upper storage tank 5 will gradually increase. When the pressure exceeds a threshold, it means that the upper storage tank 5 has a large amount of hydrogen stored. At this time, the discharge valve 6, the drive motor 14, and the rotary motor 19 will start synchronously. When the discharge valve 6 is activated, the hydrogen inside the upper storage tank 5 will enter the extension pipe 3 through the air inlet hood 2. Finally, the hydrogen will be discharged by the air inlet valve 4 and discharged into the compression shell 1. When the drive motor 14 starts at the same time, it will drive the crankshaft 12 mounted on its output end to rotate. When the crankshaft 12 rotates, it will rotate on the inner wall of the bearing 11. And because the piston 13 is mounted on the outer surface of the crankshaft 12, Therefore, when the crankshaft 12 rotates, it drives the piston 13 on its outer surface to move up and down on the inner wall of the compression tank 24. When the piston 13 moves up and down, it compresses the hydrogen in the compression tank 24. When the hydrogen is compressed, the high pressure causes the gas molecules to approach each other, thereby promoting the liquefaction process. After being compressed on the inner wall of the compression tank 24, the hydrogen is input into the inner wall of the three-way pipe 15 and enters the interior of the heat exchange tube 16 through the three-way pipe 15. When the rotary motor 19 starts, it drives the heat exchange fan 20 installed at its output end to rotate. When the heat exchange fan 20 rotates, the airflow will come into contact with the outer surface of the heat exchange tube 16. The generated airflow carries away the heat energy generated by the hydrogen in the heat exchange tube 16, thereby realizing the condensation function. When the hydrogen moves along the heat exchange tube 16, when the temperature of the hydrogen drops below its boiling point, the hydrogen begins to condense into a liquid state and is finally discharged into the interior of the lower storage tank 10, realizing the liquefaction and storage of hydrogen.

[0052] When the lower storage tank 10 contains a large amount of liquid hydrogen, the exhaust valve 8 installed on one side of the upper storage tank 5 will activate. When the exhaust valve 8 is activated, it will discharge the excess hydrogen in the upper storage tank 5 to prevent excessive pressure inside the upper storage tank 5. When the lower storage tank 10 contains a certain amount of liquid hydrogen and the upper storage tank 5 contains a small amount of hydrogen, the transfer pump 21 will activate. When the transfer pump 21 is activated, it will draw liquid hydrogen from the lower storage tank 10 and discharge the drawn liquid hydrogen into the upper storage tank 5. The inner wall of the conversion tube 22 is connected to the outer surface of the conversion tube 22. When the heating belt 23 is activated, it generates heat. The inner wall of the heating belt 23 is fixedly connected to the outer surface of the conversion tube 22. Therefore, when the heating belt 23 generates heat, it will transfer the heat through the conversion tube 22 to the liquid hydrogen transported inside. When the liquid hydrogen begins to evaporate during the heating process, it will be transformed into gaseous hydrogen and finally input into the upper storage tank 5, thereby realizing the conversion of liquid hydrogen and improving the space utilization efficiency of the storage device.

[0053] Example 2:

[0054] A method for hydrogen energy storage in a hydrogen energy storage device includes the following steps;

[0055] Step 1: Obtain real-time hydrogen pressure data in the upper storage tank 5 using a pressure sensor installed on the inner wall of the upper storage tank 5, and calculate the fluctuation difference between the real-time hydrogen pressure data and the pressure threshold based on the preset pressure threshold.

[0056] The specific process for calculating the fluctuation difference is as follows:

[0057] S101. Obtain real-time hydrogen pressure data Pi in the upper storage tank 5 through a pressure sensor installed on the inner wall of the upper storage tank 5.

[0058] S102. Obtain the preset pressure threshold P0, and calculate the fluctuation difference Wi according to the following formula: i = 1, 2, 3, ..., n, where n represents the number of real-time hydrogen pressure data;

[0059] Step 2: Obtain and analyze the fluctuation difference value, obtain the preset fluctuation difference threshold, determine the absolute value of the fluctuation difference value to generate a pressure anomaly signal, and after obtaining the pressure anomaly signal, determine whether to generate a pressure increase signal or a pressure decrease signal based on the actual value of the fluctuation difference threshold.

[0060] S201. Obtain the preset fluctuation difference threshold Wmin, determine the absolute value of the fluctuation difference, i.e., |Wi|. If |Wi| is greater than or equal to Wmin, generate a pressure anomaly signal.

[0061] S202. After obtaining the abnormal pressure signal, further determine the actual value of the fluctuation difference threshold, i.e., Wi. If Wi is greater than 0, then generate a pressure reduction signal.

[0062] If Wi is less than 0, a boost signal is generated;

[0063] Step 3: Obtain and process the abnormal pressure signal. The real-time liquid level data of liquid hydrogen in the lower storage tank 10 is obtained by the liquid level sensor installed on the inner wall of the lower storage tank 10. The storage space data of the lower storage tank 10 is obtained. The amount of storage space that can be stored in the lower storage tank 10 is calculated based on the storage space data and the real-time liquid level data. The preset minimum storage threshold Vh is obtained. The amount of storage space is determined to generate a liquid level discharge signal or a hydrogen discharge signal.

[0064] The specific process for generating liquid level discharge signals or hydrogen discharge signals is as follows:

[0065] S301. Obtain the storage space data of the lower storage tank 10, wherein the storage space data includes the radius of the lower storage tank 10 and the overall height of the lower storage tank 10, and calculate the storable space Vb according to the following formula: Vb=πr2 (H-h0), where r is the radius of the lower storage tank 10, H is the overall height of the lower storage tank 10, and h0 is the real-time liquid level data of liquid hydrogen;

[0066] S302. Obtain the preset minimum storage threshold Vh. If the available storage space is greater than or equal to the minimum storage threshold, generate a liquid level discharge signal.

[0067] If the available storage space is less than the minimum storage threshold, a hydrogen emission signal is generated.

[0068] Step 4: After obtaining the liquid level discharge signal, control the start of the delivery pump 21 and heating belt 23 to convert the liquid hydrogen into gaseous hydrogen, and then input the hydrogen into the interior of the upper storage tank 5 for storage through the conversion pipe 22.

[0069] After receiving the hydrogen emission signal, control the exhaust valve 8 to start directly emitting hydrogen;

[0070] After receiving the pressure boosting signal, the drive motor 14 and the rotary motor 19 are controlled to convert the hydrogen in the upper storage tank 5 into liquid and input it into the lower storage tank 10 to ensure that the pressure in the upper storage tank 5 is stable.

[0071] The threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by those skilled in the art for each set of sample data; as long as it does not affect the ratio between the parameter and the quantized value, it is acceptable.

[0072] The above formulas are all dimensionless calculations. The formulas are derived from software simulations based on a large amount of collected data to obtain the most recent real-world results. The preset parameters in the formulas are set by those skilled in the art according to the actual situation.

[0073] In the two embodiments provided in this application, it should be understood that the disclosed apparatus and system can be implemented in other ways; for example, the apparatus embodiments described above are merely illustrative, and the division of modules is merely a logical functional division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed; furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the apparatus or modules may be electrical, mechanical or other forms.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hydrogen energy storage device, comprising a compression shell (1), wherein a compression groove (24) is provided inside the compression shell (1), characterized in that, An air intake hood (2) is installed on the top surface of the compressed outer shell (1), an extension pipe (3) is installed on the bottom surface of the air intake hood (2), an air intake valve (4) is installed on the bottom surface of the extension pipe (3), an upper storage tank (5) is installed on the top surface of the air intake hood (2), an exhaust valve (6) is installed on the bottom surface of the inner wall of the upper storage tank (5), an air intake hole (7) is opened on the top surface of the upper storage tank (5), and an exhaust valve (8) is installed on the outer surface of the upper storage tank (5). 5) An explosion-proof shell (9) is installed on the outer surface of the explosion-proof shell (9). A lower storage tank (10) is installed at the bottom of the inner wall of the explosion-proof shell (9). A bearing (11) is installed on the inner wall of the compression shell (1). A crankshaft (12) is installed on the inner wall of the bearing (11). A piston (13) is installed on the outer surface of the crankshaft (12). A drive motor (14) is installed on one side surface of the compression shell (1). A condensation assembly is installed on the bottom surface of the compression shell (1). A conversion assembly is installed on the outer surface of the explosion-proof shell (9).

2. The hydrogen energy storage device according to claim 1, characterized in that, There are two compression grooves (24), which are equidistantly distributed inside the compression housing (1). There are two bearings (11), which are equidistantly distributed on the inner wall of the compression housing (1). There are two pistons (13), which are equidistantly distributed on the outer surface of the crankshaft (12). The pistons (13) and the crankshaft (12) are rotatably connected.

3. The hydrogen energy storage device according to claim 1, characterized in that, The outer surfaces of the two pistons (13) are in contact with the inner wall of the compression groove (24). The bottom surface of the air intake hood (2) is fixedly connected to the top surface of the compression shell (1). The top surface of the air intake hood (2) is fixedly connected to the bottom surface of the upper storage tank (5). There are two extension tubes (3). The two extension tubes (3) are equidistantly distributed on the bottom surface of the air intake hood (2). The two extension tubes (3) extend from the inner wall of the compression shell (1) to its bottom side surface. One end of each of the two extension tubes (3) is correspondingly distributed with an air intake valve (4). The air intake valve (4) is connected to the inner wall of the compression groove (24).

4. The hydrogen energy storage device according to claim 1, characterized in that, One side surface of the drive motor (14) is fixedly connected to one side surface of the compression housing (1), the output end of the drive motor (14) is fixedly connected to one end of the crankshaft (12), the outer surfaces of the two bearings (11) are fixedly connected to the inner wall of the compression housing (1), and the inner walls of the two bearings (11) are rotatably connected to the outer surface of the crankshaft (12).

5. The hydrogen energy storage device according to claim 1, characterized in that, The condensation assembly includes a three-way pipe (15), one end of which is equipped with a heat exchange pipe (16). The inner wall of the explosion-proof shell (9) is provided with an installation groove (17), and the inner wall of the installation groove (17) is equipped with a positioning plate (18). A rotary motor (19) is installed on one side of the positioning plate (18), and a heat exchange fan (20) is installed on the other side of the positioning plate (18). The three-way pipe (15) is installed on the bottom surface of the compression shell (1).

6. The hydrogen energy storage device according to claim 5, characterized in that, The two ends of the three-way pipe (15) extend from the bottom surface of the compression shell (1) to the inside of the compression groove (24). The three-way pipe (15) and the inside of the compression groove (24) are interconnected. The other end of the three-way pipe (15) is interconnected with the heat exchange pipe (16). The outer surface of the positioning plate (18) is fixedly connected to the inner wall of the mounting groove (17). One side surface of the rotary motor (19) is fixedly connected to one side surface of the positioning plate (18). One side surface of the heat exchange fan (20) is fixedly connected to the output end of the rotary motor (19).

7. The hydrogen energy storage device according to claim 1, characterized in that, The conversion assembly includes a delivery pump (21), a conversion tube (22) is mounted on the top surface of the delivery pump (21), a heating belt (23) is mounted on the outer surface of the conversion tube (22), and the delivery pump (21) is mounted on one side surface of the explosion-proof housing (9).

8. The hydrogen energy storage device according to claim 7, characterized in that, The output end of the delivery pump (21) is connected to the interior of the lower storage tank (10) through a pipe. The output end of the delivery pump (21) is connected to one end of the conversion pipe (22). The other end of the conversion pipe (22) is connected to the interior of the upper storage tank (5). The heating belt (23) is installed in a spiral shape on the outer surface of the conversion pipe (22).

9. The hydrogen energy storage method of the hydrogen energy storage device according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Obtain real-time hydrogen pressure data in the upper storage tank (5) by using a pressure sensor installed on the inner wall of the upper storage tank (5), and calculate the fluctuation difference between the real-time hydrogen pressure data and the pressure threshold according to the preset pressure threshold. The specific process for calculating the fluctuation difference is as follows: S101. Obtain real-time hydrogen pressure data Pi in the upper storage tank (5) through a pressure sensor installed on the inner wall of the upper storage tank (5); S102. Obtain the preset pressure threshold P0, and calculate the fluctuation difference Wi according to the following formula: i = 1, 2, 3, ..., n, where n represents the number of real-time hydrogen pressure data; Step 2: Obtain and analyze the fluctuation difference value, obtain the preset fluctuation difference threshold, determine the absolute value of the fluctuation difference value to generate a pressure anomaly signal, and after obtaining the pressure anomaly signal, determine whether to generate a pressure increase signal or a pressure decrease signal based on the actual value of the fluctuation difference threshold. S201. Obtain the preset fluctuation difference threshold Wmin, determine the absolute value of the fluctuation difference, i.e., |Wi|. If |Wi| is greater than or equal to Wmin, generate a pressure anomaly signal. S202. After obtaining the abnormal pressure signal, further determine the actual value of the fluctuation difference threshold, i.e., Wi. If Wi is greater than 0, then generate a pressure reduction signal. If Wi is less than 0, a boost signal is generated; Step 3: Obtain and process the abnormal pressure signal. Obtain the real-time liquid level data of liquid hydrogen in the lower storage tank (10) through the liquid level sensor set on the inner wall of the lower storage tank (10), obtain the storage space data of the lower storage tank (10), calculate the amount of storage space of the lower storage tank (10) based on the storage space data and the real-time liquid level data, obtain the preset minimum storage threshold Vh, and determine the amount of storage space to generate a liquid level discharge signal or a hydrogen discharge signal. The specific process for generating liquid level discharge signals or hydrogen discharge signals is as follows: S301. Obtain the storage space data of the lower storage tank (10), the storage space data including the radius of the lower storage tank (10) and the overall height of the lower storage tank (10), and calculate the storable space Vb according to the following formula: Vb=πr 2 (H-h0), where r is the radius of the lower storage tank (10), H is the overall height of the lower storage tank (10), and h0 is the real-time liquid level data of liquid hydrogen; S302. Obtain the preset minimum storage threshold Vh. If the available storage space is greater than or equal to the minimum storage threshold, generate a liquid level discharge signal. If the available storage space is less than the minimum storage threshold, a hydrogen emission signal is generated. Step 4: After obtaining the liquid level discharge signal, control the transfer pump (21) and heating belt (23) to start, convert the liquid hydrogen into gaseous hydrogen, and then input the hydrogen into the interior of the upper storage tank (5) for storage through the conversion pipe (22); After receiving the hydrogen emission signal, control the exhaust valve (8) to start direct hydrogen emission; After obtaining the boost signal, the drive motor (14) and the rotary motor (19) are controlled to convert the hydrogen in the upper storage tank (5) into liquid and input it into the lower storage tank (10) to ensure that the pressure in the upper storage tank (5) is stable.

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