A hydrogen energy storage device and a hydrogen energy storage method thereof

Abstract

The present invention discloses a hydrogen energy storage device and a hydrogen energy storage method thereof, which relate to the technical field of hydrogen storage, and include a compression shell and a nitrogen compression system, wherein a compression groove is arranged inside the compression shell, an air intake hood is installed on the top surface of the compression shell, an extension pipe is installed on the bottom surface of the air intake hood, an air intake valve is installed on the bottom surface of the extension pipe, and an upper storage tank is installed on the top surface of the air intake hood; the present invention monitors the real-time pressure value in the upper storage tank through a pressure sensor, thereby judging the hydrogen capacity inside the upper storage tank, and then generates a boost signal or a buck signal by acquiring the fluctuation difference and analyzing and processing it, analyzes the remaining space inside the lower storage tank through a liquid level sensor, and processes the abnormal pressure signal to obtain a liquid level discharge signal, a hydrogen discharge signal or a boost signal, and then controls the start-up of a condensation component or a conversion component respectively through the different signals received, thereby realizing the allocation of the hydrogen storage space.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage, and in particular to a hydrogen energy storage device and a hydrogen energy storage method thereof. Background Art

[0002] A hydrogen energy storage device is a system that uses hydrogen as an energy storage medium. Its main principle is to use excess electrical energy (such as wind power, solar power or other renewable energy sources) to electrolyze water, splitting water into hydrogen and oxygen. The hydrogen can then be stored and reused when needed. Hydrogen storage technology can be divided 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, usually using containers made of steel or composite materials, which are suitable for large-scale storage and transportation.

[0003] The hydrogen energy storage devices in the prior art generally have the performance of resisting high pressure and explosion-proof. The generated hydrogen is input into the interior of the gas storage tank through a gas pipeline, and the hydrogen is stored on site through the gas storage tank. However, the existing hydrogen energy storage device technology cannot realize the free conversion of hydrogen between liquid and gaseous states, resulting in that the prior art can only transport a large amount of hydrogen in the storage device, which increases the hydrogen pressure inside the storage device to achieve the storage of a large amount of hydrogen, resulting in poor space utilization of the hydrogen storage device in the prior art.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present 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, so that when the pressure in the upper storage tank is relatively high, the rotating motor and the driving motor can be started, and the crankshaft is driven by the driving motor to rotate to compress the hydrogen in the compression tank through the piston, and the hydrogen is converted into liquid through condensation and stored in the lower storage tank, thereby compressing the hydrogen to release the pressure inside the upper storage tank. When the pressure value of the upper storage tank is lower than the threshold value, the liquefied hydrogen in the lower storage tank will be input to the inner wall of the upper storage tank through the conversion tube by the delivery pump, and the heating belt installed on the outer surface of the conversion tube will evaporate the liquefied hydrogen in the conversion tube when it is started, thereby converting from liquid to gas, realizing the free conversion of hydrogen, and thus better utilizing the storage space.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a hydrogen energy storage device and a hydrogen energy storage method thereof, comprising a compression shell, a compression groove is arranged inside the compression shell, an air intake hood is installed on the top surface of the compression shell, an extension pipe is installed on the bottom surface of the air intake hood, an air intake valve is installed on the bottom surface of the extension pipe, an upper storage tank is installed on the top surface of the air intake hood, a discharge valve is installed on the bottom surface of the inner wall of the upper storage tank, an air intake hole is opened on the top surface of the upper storage tank, an exhaust valve is installed on the outer surface of the upper storage tank, an explosion-proof shell is installed on the outer surface of the upper storage tank, a lower storage tank is installed on the bottom end of the inner wall of the explosion-proof shell, a bearing is installed on the inner wall of the compression shell, a crankshaft is installed on the inner wall of the bearing, a piston is installed on the outer surface of the crankshaft, a drive motor is installed on one side surface of the compression shell, a condensation component is installed on the bottom surface of the compression shell, and a conversion component is installed on the outer surface of the explosion-proof shell.

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

[0008] Furthermore, the outer surfaces of the two pistons are in active contact with the inner wall of the compression groove, the bottom surface of the air intake hood is fixedly connected to the top surface of the compression shell, the top surface of the air intake hood is fixedly connected to the bottom surface of the upper storage tank, there are two extension pipes, the two extension pipes are equidistantly distributed on the bottom surface of the air intake hood, the two extension pipes extend from the inner wall of the compression shell to its bottom side surface, one end of the two extension pipes is correspondingly provided with an air intake valve, and 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 shell, 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 shell, and the inner walls of the two bearings are movably and rotatably connected to the outer surface of the crankshaft.

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

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

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

[0013] Furthermore, the input end of the delivery pump is connected to the interior of the lower storage tank through a pipeline, the output end of the delivery pump is connected to one end of the conversion tube, the other end of the conversion tube is connected to the interior of the upper storage tank, and the heating belt is spirally installed on the outer surface of the conversion tube.

[0014] Step 1: obtaining the real-time pressure data of hydrogen in the upper storage tank through a pressure sensor arranged on the inner wall of the upper storage tank, and calculating the fluctuation difference between the real-time pressure data of hydrogen and the pressure threshold according to a preset pressure threshold;

[0015] The specific process of calculating the volatility difference is as follows:

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

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

[0018] Step 2: Obtain the fluctuation difference and analyze and process it, obtain a preset fluctuation difference threshold, determine the absolute value of the fluctuation difference to generate a pressure abnormality signal, and after obtaining the pressure abnormality signal, determine whether to generate a pressure increase signal or a pressure decrease signal according to the actual value of the fluctuation difference threshold;

[0019] S201, obtaining a preset fluctuation difference threshold Wmin, determining the absolute value of the fluctuation difference, namely |Wi|, and generating a pressure abnormality signal if |Wi| is greater than or equal to Wmin;

[0020] S202, after obtaining the abnormal pressure signal, further determine the actual value of the fluctuation difference threshold, i.e., Wi, and if Wi is greater than 0, 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, obtain the real-time liquid level data of the liquid hydrogen in the lower storage tank through the liquid level sensor arranged on the inner wall of the lower storage tank, obtain the storage space data of the lower storage tank, calculate the storage space amount of the lower storage tank according to the storage space data and the real-time liquid level data, obtain the preset minimum storage threshold value Vh, and judge the storage space amount to generate a liquid level discharge signal or a hydrogen discharge signal;

[0023] The specific process of generating a liquid level discharge signal or a hydrogen discharge signal is as follows:

[0024] S301, obtaining 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 calculating the storable space Vb according to the following formula: , 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 level data of liquid hydrogen;

[0025] S302, obtaining a preset minimum storage threshold Vh, and if the available storage space is greater than or equal to the minimum storage threshold, generating 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 boost signal, the delivery pump and the heating belt are controlled to start converting the liquid hydrogen into gaseous hydrogen, and then the hydrogen is input into the upper storage tank through the conversion tube for storage;

[0028] After obtaining the hydrogen emission signal, the exhaust valve is controlled to start directly emitting hydrogen;

[0029] After obtaining the liquid level discharge signal, the drive motor and the rotating motor are controlled to work, so that the hydrogen in the upper storage tank is converted into liquid and input 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 the hydrogen energy storage method thereof monitor the real-time pressure value in the upper storage tank through a pressure sensor to determine the hydrogen capacity therein, and then generate a boost signal or a buck signal by acquiring the fluctuation difference and analyzing and processing it, analyze the remaining space in the lower storage tank through a liquid level sensor, and process the abnormal pressure signal to obtain a liquid level discharge signal, a hydrogen discharge signal or a boost signal, and then control the start-up of a condensation component or a conversion component respectively through the different signals received to realize the allocation of hydrogen storage space. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The overall external structure schematic diagram of the present invention is shown;

[0033] Figure 2 The overall internal structure schematic diagram of the present invention is shown;

[0034] Figure 3 A schematic diagram of the structure of the upper storage tank of the present invention is shown;

[0035] Figure 4 Another structural schematic diagram of the upper storage tank of the present invention is shown;

[0036] Figure 5 A schematic diagram of the internal structure of the upper storage tank of the present invention is shown;

[0037] Figure 6 A schematic diagram of the internal structure of the compression housing of the present invention is shown;

[0038] Figure 7 A schematic diagram of the internal structure of the compression housing of the present invention is shown at another angle;

[0039] Figure 8 A schematic structural diagram of a condensing assembly of the present invention is shown.

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

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1:

[0043] like Figure 1-8As shown, a hydrogen energy storage device and a hydrogen energy storage method thereof include a compression shell 1, a compression groove 24 is arranged inside the compression shell 1, an air intake hood 2 is installed on the top surface of the compression 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, a discharge 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, an exhaust valve 8 is installed on the outer surface of the upper storage tank 5, an explosion-proof shell 9 is installed on the outer surface of the upper storage tank 5, a lower storage tank 10 is installed on the bottom end 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 component is installed on the bottom surface of the compression shell 1, and a conversion component is installed on the outer surface of the explosion-proof shell 9.

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

[0045] The outer surfaces of the two pistons 13 are in active 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, and 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 pipes 3, and the two extension pipes 3 are equidistantly distributed on the bottom surface of the air intake hood 2. The two extension pipes 3 extend from the inner wall of the compression shell 1 to its bottom side surface. One end of the two extension pipes 3 is correspondingly distributed with an intake valve 4, and the intake valve 4 is connected to the inner wall of the compression groove 24. Because the piston 13 is installed on the outer surface of the crankshaft 12, when the crankshaft 12 rotates, it will drive the piston 13 on its outer surface to move up and down on the inner wall of the compression groove 24, and when the piston 13 moves up and down, it will compress the hydrogen in the compression groove 24.

[0046] One side surface of the drive motor 14 is fixedly connected to one side surface of the compression shell 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 shell 1, and the inner walls of the two bearings 11 are movably and rotatably connected to the outer surface of the crankshaft 12. When the pressure is higher than the threshold, it means that the more hydrogen reserves inside the upper storage tank 5, the discharge valve 6 and the drive motor 14 rotating motor 19 will start synchronously. When the discharge valve 6 is started, the hydrogen inside the upper storage tank 5 will enter the extension pipe 3 from the intake hood 2, and finally the hydrogen will be discharged by the intake valve 4.

[0047] The condensation component includes a three-way pipe 15, one end of which is installed with a heat exchange tube 16, the inner wall of the explosion-proof shell 9 is provided with a mounting groove 17, the inner wall of the mounting groove 17 is installed with a positioning plate 18, a rotating 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 end surface of the compression shell 1. When the rotating motor 19 is started, it will drive the heat exchange fan 20 installed at its output end to rotate. When the heat exchange fan 20 rotates, the airflow will contact the outer surface of the heat exchange tube 16, and the heat energy generated by the hydrogen in the heat exchange tube 16 is taken away by the generated airflow, thereby realizing the condensation function.

[0048] Both ends of the three-way pipe 15 extend from the bottom end surface of the compression shell 1 to the interior of the compression groove 24 respectively. The three-way pipe 15 is connected to the interior of the compression groove 24, and the other end of the three-way pipe 15 is connected to 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, and one side surface of the rotating motor 19 is fixedly connected to the 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 rotating motor 19. After the hydrogen is compressed on the inner wall of the compression groove 24, it will be input into the inner wall of the three-way pipe 15 and enter the interior of the heat exchange tube 16 through the three-way pipe 15.

[0049] The conversion assembly includes a delivery pump 21, a conversion tube 22 is installed on the top surface of the delivery pump 21, a heating belt 23 is installed on the outer surface of the conversion tube 22, and the delivery pump 21 is installed on one side surface of the explosion-proof housing 9. When the delivery pump 21 is started, liquid hydrogen will be extracted from the lower storage tank 10 and discharged into the inner wall of the conversion tube 22.

[0050] The input end of the delivery pump 21 is interconnected with the interior of the lower storage tank 10 through a pipeline, the output end of the delivery pump 21 is interconnected with one end of the conversion tube 22, and the other end of the conversion tube 22 is interconnected with the interior of the upper storage tank 5. The heating belt 23 is spirally installed on the outer surface of the conversion tube 22. When the heating belt 23 starts to generate heat, it will transfer the heat to the liquid hydrogen transported inside through the conversion tube 22. When the liquid hydrogen begins to evaporate during the heating process, it is converted into gaseous hydrogen.

[0051] The working process of the present invention is as follows: when it is necessary to store hydrogen, the hydrogen to be stored is input into the interior of the upper storage tank 5 through the air inlet 7. The hydrogen input into the interior of the upper storage tank 5 will be stored in the upper storage tank 5. When the interior of the upper storage tank 5 stores more hydrogen, the pressure inside the upper storage tank 5 will gradually increase. When the pressure is higher than the threshold, it means that the interior of the upper storage tank 5 has more hydrogen reserves. At this time, the discharge valve 6 and the driving motor 14 and the rotating motor 19 will be started synchronously. When the discharge valve 6 is started, the hydrogen inside 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 and discharged into the interior of the compression shell 1. When the driving motor 14 is started at the same time, it will drive the crankshaft 12 installed 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 outer surface of the crankshaft 12 is installed with a piston 13, Therefore, when the crankshaft 12 rotates, it will drive the piston 13 on its outer surface to move up and down on the inner wall of the compression groove 24. When the piston 13 moves up and down, the hydrogen in the compression groove 24 will be compressed. When the hydrogen is compressed, the high pressure makes the gas molecules close to each other, thereby promoting the liquid process. After the hydrogen is compressed on the inner wall of the compression groove 24, it will be input into the inner wall of the tee pipe 15, and enter the interior of the heat exchange tube 16 through the tee pipe 15. When the rotating motor 19 is started, it will drive the heat exchange fan 20 installed at its output end to rotate. When the heat exchange fan 20 rotates, the airflow will contact the outer surface of the heat exchange tube 16, and the heat energy generated by the hydrogen in the heat exchange tube 16 will be taken away by the generated airflow, 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 liquid, and is finally discharged into the interior of the lower storage tank 10, realizing the liquefaction and storage of the hydrogen.

[0052] When the lower storage tank 10 stores a large amount of liquid hydrogen, the exhaust valve 8 installed on the surface of one side of the upper storage tank 5 will be activated. When the exhaust valve 8 is activated, the excess hydrogen in the upper storage tank 5 will be discharged to prevent the pressure inside the upper storage tank 5 from being too high. When there is a certain amount of liquid hydrogen in the lower storage tank 10 and the internal hydrogen stock of the upper storage tank 5 is small, the delivery pump 21 is started. When the delivery pump 21 is started, liquid hydrogen will be extracted from the lower storage tank 10 and discharged into The inner wall of the conversion tube 22, the heating belt 23 is started at this time, and heat is generated when the heating belt 23 is started. The inner wall of the heating belt 23 is fixedly connected to the outer surface of the conversion tube 22, so when the heating belt 23 is started to generate heat, the heat will be transferred through the conversion tube 22 to the liquid hydrogen transported inside it. When the liquid hydrogen begins to evaporate during the heating process, it is converted into gaseous hydrogen and finally input into the upper storage tank 5, thereby realizing the conversion of liquid hydrogen, thereby improving the space utilization efficiency of the storage device.

[0053] Embodiment 2:

[0054] A hydrogen energy storage method of a hydrogen energy storage device comprises the following steps;

[0055] Step 1: obtaining the real-time pressure data of hydrogen in the upper storage tank 5 through a pressure sensor arranged on the inner wall of the upper storage tank 5, and calculating the fluctuation difference between the real-time pressure data of hydrogen and the pressure threshold according to a preset pressure threshold;

[0056] The specific process of calculating the volatility difference is as follows:

[0057] S101, obtaining real-time pressure data Pi of hydrogen in the upper storage tank 5 through a pressure sensor disposed on the inner wall of the upper storage tank 5;

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

[0059] Step 2: Obtain the fluctuation difference and analyze and process it, obtain a preset fluctuation difference threshold, determine the absolute value of the fluctuation difference to generate a pressure abnormality signal, and after obtaining the pressure abnormality signal, determine whether to generate a pressure increase signal or a pressure decrease signal according to the actual value of the fluctuation difference threshold;

[0060] S201, obtaining a preset fluctuation difference threshold Wmin, determining the absolute value of the fluctuation difference, namely |Wi|, and generating a pressure abnormality signal if |Wi| is greater than or equal to Wmin;

[0061] S202, after obtaining the abnormal pressure signal, further determine the actual value of the fluctuation difference threshold, i.e., Wi, and if Wi is greater than 0, 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, obtain the real-time liquid level data of the liquid hydrogen in the lower storage tank 10 through the liquid level sensor arranged on the inner wall of the lower storage tank 10, obtain the storage space data of the lower storage tank 10, calculate the storage space amount of the lower storage tank 10 according to the storage space data and the real-time liquid level data, obtain the preset minimum storage threshold value Vh, and judge the storage space amount to generate a liquid level discharge signal or a hydrogen discharge signal;

[0064] The specific process of generating a liquid level discharge signal or a hydrogen discharge signal is as follows:

[0065] S301, obtaining 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 calculating the storable space Vb according to the following formula: , 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, obtaining a preset minimum storage threshold Vh, and if the available storage space is greater than or equal to the minimum storage threshold, generating a liquid level discharge signal;

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

[0068] Step 4: After obtaining the boost signal, the delivery pump 21 and the heating belt 23 are controlled to start converting the liquid hydrogen into gaseous hydrogen, and then the hydrogen is input into the upper storage tank 5 through the conversion tube 22 for storage;

[0069] After obtaining the hydrogen emission signal, the exhaust valve 8 is controlled to start directly emitting hydrogen;

[0070] After obtaining the liquid level discharge signal, the driving motor 14 and the rotating motor 19 are controlled to work, so as 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 technicians in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0072] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

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

[0074] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydrogen energy storage device, comprising a compression housing (1), wherein a compression groove (24) is provided inside the compression housing (1), characterized in that: An air 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 air intake hood (2), an air intake valve (4) is mounted on the bottom surface of the extension pipe (3), an upper storage tank (5) is mounted on the top surface of the air intake hood (2), a discharge valve (6) is mounted on the bottom surface of the inner wall of the upper storage tank (5), an air intake hole (7) is formed on the top surface of the upper storage tank (5), an exhaust valve (8) is mounted on the outer surface of the upper storage tank (5), and the upper storage tank ( 5) is installed on the outer surface of an explosion-proof housing (9), a lower storage tank (10) is installed on the bottom end of the inner wall of the explosion-proof housing (9), a bearing (11) is installed on the inner wall of the compression housing (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 housing (1), a condensation component is installed on the bottom end surface of the compression housing (1), and a conversion component is installed on the outer surface of the explosion-proof housing (9); 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); and the pistons (13) are movably rotatably connected to the crankshaft (12); The outer surfaces of the two pistons (13) are in active 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 pipes (3); the two extension pipes (3) are equidistantly distributed on the bottom surface of the air intake hood (2); the two extension pipes (3) extend from the inner wall of the compression shell (1) to the bottom side surface thereof; one end of each of the two extension pipes (3) is correspondingly provided with an air intake valve (4); the air intake valve (4) is communicated with the inner wall of the compression groove (24); 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 sides 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 movably rotatably connected to the outer side surface of the crankshaft (12); The condensing assembly comprises a three-way pipe (15), one end of which is mounted with a heat exchange pipe (16), an inner wall of the explosion-proof housing (9) is provided with a mounting groove (17), an inner wall of the mounting groove (17) is mounted with a positioning plate (18), a rotating motor (19) is mounted on one side surface of the positioning plate (18), a heat exchange fan (20) is mounted on the other side surface of the positioning plate (18), and the three-way pipe (15) is mounted on the bottom end surface of the compression housing (1); The two ends of the three-way pipe (15) extend from the bottom end 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 connected to each other, the other end of the three-way pipe (15) and the heat exchange pipe (16) are connected to each other, 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 rotating motor (19) is fixedly connected to one side surface of the positioning plate (18), and one side surface of the heat exchange fan (20) is fixedly connected to the output end of the rotating motor (19); The conversion assembly comprises 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 a side surface of the explosion-proof housing (9); The input end of the delivery pump (21) is communicated with the interior of the lower storage tank (10) through a pipeline, the output end of the delivery pump (21) is communicated with one end of a conversion tube (22), the other end of the conversion tube (22) is communicated with the interior of an upper storage tank (5), and the heating belt (23) is installed in a spiral shape on the outer surface of the conversion tube (22).

2. The hydrogen energy storage method of the hydrogen energy storage device according to claim 1, characterized in that: The following steps are involved: Step 1: obtaining real-time pressure data of hydrogen in the upper storage tank (5) through a pressure sensor arranged on the inner wall of the upper storage tank (5), and calculating the fluctuation difference between the real-time pressure data of hydrogen and the pressure threshold value according to a preset pressure threshold value; The specific process of calculating the volatility difference is as follows: S101, obtaining real-time pressure data Pi of hydrogen in the upper storage tank (5) through a pressure sensor arranged on the inner wall of the upper storage tank (5); S102, obtaining a preset pressure threshold value P0, and calculating the fluctuation difference Wi according to the following formula: , i=1, 2, 3, …, n, where n represents the number of real-time data of hydrogen pressure; Step 2: Obtain the fluctuation difference and analyze and process it, obtain a preset fluctuation difference threshold, determine the absolute value of the fluctuation difference to generate a pressure abnormality signal, and after obtaining the pressure abnormality signal, determine whether to generate a pressure increase signal or a pressure decrease signal according to the actual value of the fluctuation difference threshold; S201, obtaining a preset fluctuation difference threshold Wmin, determining the absolute value of the fluctuation difference, namely |Wi|, and generating a pressure abnormality signal if |Wi| is greater than or equal to Wmin; S202, after obtaining the abnormal pressure signal, further determine the actual value of the fluctuation difference threshold, i.e., Wi, and if Wi is greater than 0, generate a pressure reduction signal; If Wi is less than 0, a boost signal is generated; Step 3: Obtaining and processing the abnormal pressure signal, obtaining real-time liquid level data of the liquid hydrogen in the lower storage tank (10) through a liquid level sensor disposed on the inner wall of the lower storage tank (10), obtaining storage space data of the lower storage tank (10), calculating the amount of storable space of the lower storage tank (10) based on the storage space data and the real-time liquid level data, obtaining a preset minimum storage threshold value Vh, and determining the amount of storable space to generate a liquid level discharge signal or a hydrogen discharge signal; The specific process of generating a liquid level discharge signal or a hydrogen discharge signal is as follows: S301, obtaining 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 calculating the storable space Vb according to the following formula: , wherein 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, obtaining a preset minimum storage threshold Vh, and if the available storage space is greater than or equal to the minimum storage threshold, generating a liquid level discharge signal; If the available storage space is less than a minimum storage threshold, a hydrogen emission signal is generated; Step 4: After obtaining the boost signal, the delivery pump (21) and the heating belt (23) are controlled to start converting the liquid hydrogen into gaseous hydrogen, and then the hydrogen is input into the upper storage tank (5) through the conversion tube (22) for storage; After obtaining the hydrogen emission signal, the exhaust valve (8) is controlled to start directly emitting hydrogen; After obtaining the liquid level discharge signal, the driving motor (14) and the rotating motor (19) are controlled to work, so that the hydrogen in the upper storage tank (5) is converted into liquid and input into the lower storage tank (10), so as to ensure that the pressure in the upper storage tank (5) is stable.

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