Solid hydrogen storage efficient hydrogen charging system

Abstract

The invention provides a solid-state hydrogen storage efficient hydrogen charging system, and relates to the technical field of hydrogen storage, a hydrogenation gun is connected to a first hydrogen inlet end of a solid-state hydrogen storage device, and the hydrogenation gun is opened to charge the solid-state hydrogen storage device with a preset volume of hydrogen; acquiring the real-time temperature in the solid hydrogen storage device; under the condition that the real-time temperature is larger than the first preset temperature, a first circulating pump is controlled to work, and a cooling medium in the heat exchanger is cooled through a cooling device and then flows back to the heat exchanger through a liquid storage box; under the condition that the real-time temperature is larger than a second preset temperature, the hydrogen discharging end of the solid-state hydrogen storage device is controlled to discharge the hydrogen subjected to heat exchange to the bypass pipeline, the second hydrogen inlet end of the solid-state hydrogen storage device is controlled to be filled with the hydrogen cooled by the liquid storage tank, and the second preset temperature is larger than the first preset temperature; when a solid hydrogen storage material in the solid hydrogen storage device reaches a hydrogen absorption saturation state, hydrogen charging is stopped; the hydrogen charging temperature can be effectively controlled within the optimal temperature range, and the hydrogen charging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of hydrogen storage technology, and in particular to a solid-state hydrogen storage and efficient hydrogen charging system. Background Art

[0002] Hydrogen storage technologies mainly include material hydrogen storage and physical hydrogen storage. Physical hydrogen storage is divided into gaseous hydrogen storage and liquid hydrogen storage. Gaseous hydrogen storage has become the first commercially applied hydrogen storage technology due to its advantages such as fast hydrogen charging and discharging speed, low hydrogen storage energy consumption, low cost and mature technology. Solid-state hydrogen storage technology can solve the two problems of high-density storage and safe application of hydrogen energy that people are most concerned about, due to its high volume hydrogen storage density, safety, no need for high-pressure containers, and the ability to increase the purity of hydrogen. At the same time, the hydrogen pressure generated by PEM and AEM water electrolysis to produce hydrogen meets the solid-state hydrogen storage filling pressure, so solid-state hydrogen storage technology is considered to be one of the best hydrogen storage methods for off-grid power generation in conjunction with renewable energy.

[0003] Solid-state hydrogen storage refers to the use of materials to store hydrogen in solid materials by physical and chemical adsorption of hydrogen. During the hydrogen charging process, the alloy hydrogen storage material absorbs hydrogen to generate metal hydrides through an exothermic reaction at a certain temperature and hydrogen pressure. In the prior art, the heat generated by hydrogen charging in the solid-state hydrogen storage device is dissipated by a water bath, but the heat dissipation efficiency is low, resulting in a high temperature in the solid-state hydrogen storage device, which affects the hydrogen charging efficiency. Summary of the invention

[0004] In response to the above-mentioned problems, the present application proposes a solid-state hydrogen storage and efficient hydrogen charging system, which solves the technical problem in the prior art that the heat generated by the hydrogen charging of the solid-state hydrogen storage device is dissipated by means of a water bath, the heat dissipation efficiency is low, and the temperature inside the solid-state hydrogen storage device is high, which affects the hydrogen charging efficiency. The system can effectively control the hydrogen charging temperature within the optimal temperature range and improve the hydrogen charging efficiency.

[0005] The embodiment of the present application provides a solid-state hydrogen storage and efficient hydrogen charging system, including a solid-state hydrogen storage device, a heat exchanger is arranged on the outside of the solid-state hydrogen storage device, a liquid inlet and a liquid outlet of the heat exchanger are connected through a circulation pipeline, a cooling device, a liquid storage tank and a first circulation pump are arranged on the circulation pipeline, the solid-state hydrogen storage device is provided with a first hydrogen inlet end, a second hydrogen inlet end and a hydrogen discharge end, the second hydrogen inlet end and the hydrogen discharge end are connected through a bypass pipeline, and a second circulation pump is arranged on the bypass pipeline;

[0006] The solid-state hydrogen storage device is charged with hydrogen including:

[0007] Connecting a hydrogenation gun to a first hydrogen inlet end of a solid-state hydrogen storage device, opening the hydrogenation gun to charge a preset volume of hydrogen into the solid-state hydrogen storage device;

[0008] Obtaining the real-time temperature inside the solid-state hydrogen storage device;

[0009] When the real-time temperature is greater than the first preset temperature, the first circulation pump is controlled to operate, so that the cooling medium in the heat exchanger is cooled by the cooling device and then flows back to the heat exchanger through the liquid storage tank;

[0010] When the real-time temperature is greater than a second preset temperature, the hydrogen discharge end of the solid-state hydrogen storage device is controlled to discharge the hydrogen after heat exchange to the bypass pipeline, and the second hydrogen inlet end of the solid-state hydrogen storage device is controlled to be filled with hydrogen cooled by the liquid storage tank, wherein the second preset temperature is greater than the first preset temperature;

[0011] The solid-state hydrogen storage material in the solid-state hydrogen storage device reaches a hydrogen absorption saturation state, and hydrogen charging stops.

[0012] In some embodiments, the solid-state hydrogen storage device is provided with a mass flow meter, and the mass flow meter is used to collect the remaining capacity of the solid-state hydrogen storage device.

[0013] In some embodiments, the preset capacity is the actual capacity of the solid-state hydrogen storage device minus the remaining capacity.

[0014] In some embodiments, a temperature sensor is disposed inside the solid-state hydrogen storage device, and the temperature sensor collects the real-time temperature inside the solid-state hydrogen storage device.

[0015] In some embodiments, a cooling pipe is disposed on the bypass pipe, and the cooling pipe is disposed in the liquid storage tank.

[0016] In some embodiments, the cooling pipe is a spiral pipe.

[0017] In some embodiments, the first circulation pump is an adjustable circulation pump, and when the real-time temperature is greater than a first preset temperature, the first circulation pump is controlled to operate at a first output.

[0018] In some embodiments, charging the solid-state hydrogen storage device with hydrogen includes:

[0019] When the real-time temperature is greater than the third preset temperature, the first circulation pump is controlled to operate at the second output, and the cooling medium in the heat exchanger is cooled by the cooling device and then returned to the heat exchanger through the liquid storage tank, wherein the third preset temperature is greater than the second preset temperature, and the second output is greater than the first output.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Connect a hydrogenation gun to a first hydrogen inlet end of a solid-state hydrogen storage device, open the hydrogenation gun, and fill a preset capacity of hydrogen into the solid-state hydrogen storage device; obtain the real-time temperature inside the solid-state hydrogen storage device; when the real-time temperature is greater than the first preset temperature, control the first circulation pump to operate, and cool the cooling medium in the heat exchanger through the cooling device and then return it to the heat exchanger through the liquid storage tank; when the real-time temperature is greater than the second preset temperature, control the hydrogen discharge end of the solid-state hydrogen storage device to discharge the hydrogen that has undergone heat exchange to a bypass pipeline, and control the second hydrogen inlet end of the solid-state hydrogen storage device to be filled with hydrogen that has been cooled by the liquid storage tank, wherein the second preset temperature is greater than the first preset temperature; the solid-state hydrogen storage material in the solid-state hydrogen storage device reaches a hydrogen absorption saturation state, and hydrogen filling is stopped; the hydrogen filling temperature can be effectively controlled within an optimal temperature range, thereby improving the hydrogen filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The embodiments of the present invention are further described below with reference to the accompanying drawings:

[0023] Figure 1 A structural schematic diagram of a solid-state hydrogen storage and efficient hydrogen charging system provided in an embodiment of the present application;

[0024] Reference numerals:

[0025] 1-solid-state hydrogen storage device, 2-heat exchanger, 3-circulation pipeline, 4-cooling device, 5-liquid storage tank, 6-first circulation pump, 7-first hydrogen inlet end, 8-second hydrogen inlet end, 9-hydrogen discharge end, 10-bypass pipeline, 11-second circulation pump, 12-cooling pipeline. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0027] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0028] If similar descriptions of "first\second\third" appear in the application documents, the following instructions will be added. In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0030] The present application embodiment provides a solid-state hydrogen storage and efficient hydrogen charging system. Figure 1 A schematic diagram of the implementation process of a solid-state hydrogen storage and efficient hydrogen charging system provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, it includes a solid-state hydrogen storage device 1, a heat exchanger 2 is arranged on the outside of the solid-state hydrogen storage device 1, the liquid inlet and the liquid outlet of the heat exchanger 2 are connected through a circulation pipeline 3, the circulation pipeline 3 is provided with a cooling device 4, a liquid storage tank 5 and a first circulation pump 6, the solid-state hydrogen storage device 1 is provided with a first hydrogen inlet end 7, a second hydrogen inlet end 8 and a hydrogen discharge end 9, the second hydrogen inlet end 8 and the hydrogen discharge end 9 are connected through a bypass pipeline 10, and the bypass pipeline 10 is provided with a second circulation pump 11;

[0031] The solid-state hydrogen storage device 1 is charged with hydrogen including:

[0032] Connect a hydrogenation gun to the first hydrogen inlet end 7 of the solid-state hydrogen storage device 1, and open the hydrogenation gun to charge a preset volume of hydrogen into the solid-state hydrogen storage device 1;

[0033] Obtaining the real-time temperature inside the solid-state hydrogen storage device 1;

[0034] When the real-time temperature is greater than the first preset temperature, the first circulation pump 6 is controlled to work, so that the cooling medium in the heat exchanger 2 is cooled by the cooling device 4 and then flows back to the heat exchanger 2 through the liquid storage tank 5;

[0035] When the real-time temperature is greater than a second preset temperature, the hydrogen discharge end 9 of the solid-state hydrogen storage device 1 is controlled to discharge the hydrogen after heat exchange to the bypass pipe 10, and the second hydrogen inlet end 8 of the solid-state hydrogen storage device 1 is controlled to be filled with hydrogen cooled by the liquid storage tank 5, wherein the second preset temperature is greater than the first preset temperature;

[0036] The solid-state hydrogen storage material in the solid-state hydrogen storage device 1 reaches a hydrogen absorption saturation state, and hydrogen charging stops.

[0037] In the embodiment of the present application, before the solid-state hydrogen storage device 1 is charged with hydrogen, the second hydrogen inlet end 8 and the hydrogen outlet end 9 of the solid-state hydrogen storage device 1 need to be connected to the two ends of the bypass pipe 10 respectively, so as to form a loop. The hydrogenation gun is connected to the first hydrogen inlet end 7 of the solid-state hydrogen storage device 1 to charge hydrogen into the solid-state hydrogen storage device 1, and the hydrogen storage material in the solid-state hydrogen storage device 1 absorbs hydrogen and releases heat, resulting in an increase in the temperature in the solid-state hydrogen storage device 1. The real-time temperature in the solid-state hydrogen storage device 1 is obtained. When the real-time temperature is greater than the first preset temperature, it is only necessary to control the first circulation pump 6 to work so that the cooling medium in the heat exchanger 2 flows through the circulation pipe 3. The cooling medium in the circulation pipe 3 flows into the liquid storage tank 5 after being cooled by the cooling device 4, and flows back to the heat exchanger 2 through the liquid storage tank 5. The heat generated by the hydrogen storage material in the solid-state hydrogen storage device 1 absorbing hydrogen can be dissipated by the cooling medium, thereby controlling the temperature in the solid-state hydrogen storage device 1 within the optimal temperature range, which can ensure the hydrogen filling efficiency of the solid-state hydrogen storage device 1 and avoid excessively high hydrogen filling temperature, which affects the hydrogen filling efficiency. As the hydrogen filling time increases, the real-time temperature in the solid-state hydrogen storage device 1 will continue to increase with time, and the heat exchanger 2 cannot meet the heat dissipation requirements of the solid-state hydrogen storage device 1, resulting in a decrease in the hydrogen filling efficiency. Therefore, when the real-time temperature is greater than the second preset temperature, the hydrogen discharge end 9 of the solid-state hydrogen storage device 1 is controlled to discharge the hydrogen that has undergone heat exchange to the bypass pipe 10. The hydrogen in the bypass pipe 10 will take out a part of the heat, thereby reducing the temperature in the solid-state hydrogen storage device 1. The bypass pipe 10 cools the hot hydrogen through the liquid storage tank 5 and then flows back to the solid-state hydrogen storage device 1 through the second hydrogen inlet end 8, thereby accelerating the heat dissipation in the solid-state hydrogen storage device 1, and controlling the hydrogen filling temperature within the optimal temperature range again, which can ensure the hydrogen filling efficiency of the solid-state hydrogen storage device 1 and avoid excessively high hydrogen filling temperature, which affects the hydrogen filling efficiency. In summary, the hydrogen filling temperature can be effectively controlled within the optimal temperature range to improve the hydrogen filling efficiency.

[0038] In some embodiments, the solid-state hydrogen storage device 1 is provided with a mass flow meter, and the mass flow meter is used to collect the remaining capacity of the solid-state hydrogen storage device 1. The preset capacity is the actual capacity of the solid-state hydrogen storage device 1 minus the remaining capacity.

[0039] In the embodiment of the present application, the remaining capacity of the solid-state hydrogen storage device 1 is obtained by a mass flow meter, so the preset capacity of the solid-state hydrogen storage device 1 can be determined by subtracting the remaining capacity from the total capacity of the solid-state hydrogen storage device 1.

[0040] In some embodiments, a temperature sensor is disposed inside the solid-state hydrogen storage device 1 , and the temperature sensor collects the real-time temperature inside the solid-state hydrogen storage device 1 .

[0041] In the embodiment of the present application, the real-time temperature in the solid-state hydrogen storage device 1 is collected by a temperature sensor at a preset period.

[0042] In some embodiments, Figure 1 As shown, a cooling pipe 12 is provided on the bypass pipe 10, and the cooling pipe 12 is provided in the liquid storage tank 5. The cooling pipe 12 is a spiral pipe.

[0043] In the embodiment of the present application, a cooling pipe 12 is provided on the bypass pipe 10, and the hot hydrogen in the bypass pipe 10 can be cooled by heat exchange between the cooling pipe 12 and the cooling medium in the liquid storage tank 5, thereby accelerating the heat dissipation efficiency. The cooling pipe 12 is a spiral pipe, and the spiral pipe increases the contact area with the cooling medium in the liquid storage tank 5, so that the hot hydrogen in the bypass pipe 10 can be fully dissipated.

[0044] In some embodiments, the first circulation pump 6 is an adjustable circulation pump, and when the real-time temperature is greater than the first preset temperature, the first circulation pump 6 is controlled to operate at a first output.

[0045] In the embodiment of the present application, the first circulation pump 6 is an adjustable circulation pump. When the real-time temperature is greater than the first preset temperature, the adjustable circulation pump operates with the first output, and controls the cooling medium at a suitable flow rate to meet the heat dissipation requirements of the solid-state hydrogen storage device 1 without increasing unnecessary energy consumption, thereby achieving the purpose of energy saving.

[0046] In some embodiments, the solid-state hydrogen storage device 1 is charged with hydrogen including:

[0047] When the real-time temperature is greater than the third preset temperature, the first circulation pump 6 is controlled to operate at the second output, and the cooling medium in the heat exchanger 2 is cooled by the cooling device 4 and then flows back to the heat exchanger 2 through the liquid storage tank 5, wherein the third preset temperature is greater than the second preset temperature, and the second output is greater than the first output.

[0048] In the embodiment of the present application, when the real-time temperature is greater than the third preset temperature, it indicates that the temperature inside the solid-state hydrogen storage device 1 is continuing to rise and the heat dissipation is not met. Therefore, the output of the first circulation pump 6 can be adjusted to control the first circulation pump 6 to operate at the second output to increase the flow rate of the cooling medium, thereby further accelerating the heat dissipation and reducing the temperature inside the solid-state hydrogen storage device 1, so that the hydrogen filling temperature is maintained within the optimal temperature range to ensure the hydrogen filling efficiency.

[0049] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0050] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, object or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, object or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, object or device including the element.

[0051] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A solid-state hydrogen storage and high-efficiency hydrogen filling system, characterized in that: It comprises a solid-state hydrogen storage device, a heat exchanger is arranged on the outside of the solid-state hydrogen storage device, a liquid inlet and a liquid outlet of the heat exchanger are connected through a circulation pipeline, a cooling device, a liquid storage tank and a first circulation pump are arranged on the circulation pipeline, the solid-state hydrogen storage device is provided with a first hydrogen inlet end, a second hydrogen inlet end and a hydrogen discharge end, the second hydrogen inlet end and the hydrogen discharge end are connected through a bypass pipeline, and a second circulation pump is arranged on the bypass pipeline; The solid-state hydrogen storage device is charged with hydrogen including: Connecting a hydrogenation gun to a first hydrogen inlet end of a solid-state hydrogen storage device, opening the hydrogenation gun to charge a preset volume of hydrogen into the solid-state hydrogen storage device; Obtaining the real-time temperature inside the solid-state hydrogen storage device; When the real-time temperature is greater than the first preset temperature, the first circulation pump is controlled to operate, so that the cooling medium in the heat exchanger is cooled by the cooling device and then flows back to the heat exchanger through the liquid storage tank; When the real-time temperature is greater than a second preset temperature, the hydrogen discharge end of the solid-state hydrogen storage device is controlled to discharge the hydrogen after heat exchange to the bypass pipeline, and the second hydrogen inlet end of the solid-state hydrogen storage device is controlled to be filled with hydrogen cooled by the liquid storage tank, wherein the second preset temperature is greater than the first preset temperature; The solid-state hydrogen storage material in the solid-state hydrogen storage device reaches a hydrogen absorption saturation state, and hydrogen charging stops.

2. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 1, characterized in that: The solid-state hydrogen storage device is provided with a mass flow meter, and the mass flow meter is used to collect the remaining capacity of the solid-state hydrogen storage device.

3. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 2, characterized in that: The preset capacity is the actual capacity of the solid-state hydrogen storage device minus the remaining capacity.

4. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 1, characterized in that: A temperature sensor is provided inside the solid-state hydrogen storage device, and the temperature sensor collects the real-time temperature inside the solid-state hydrogen storage device.

5. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 1, characterized in that: The bypass pipeline is provided with a cooling pipeline, and the cooling pipeline is arranged in the liquid storage tank.

6. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 5, characterized in that: The cooling pipeline is a spiral pipeline.

7. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 1, characterized in that: The first circulation pump is an adjustable circulation pump. When the real-time temperature is greater than the first preset temperature, the first circulation pump is controlled to operate at a first output.

8. A solid-state hydrogen storage and high-efficiency hydrogen charging system according to claim 7, characterized in that: The solid-state hydrogen storage device is charged with hydrogen including: When the real-time temperature is greater than the third preset temperature, the first circulation pump is controlled to operate at the second output, and the cooling medium in the heat exchanger is cooled by the cooling device and then returned to the heat exchanger through the liquid storage tank, wherein the third preset temperature is greater than the second preset temperature, and the second output is greater than the first output.

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