A solid-state hydrogen storage and high-efficiency hydrogen charging system

Abstract

The present application provides a solid-state hydrogen storage and high-efficiency hydrogen filling system, which relates to the field of hydrogen storage technology. A hydrogen filling gun is connected to a first hydrogen inlet end of a solid-state hydrogen storage device, and the hydrogen filling gun is opened to fill a preset capacity of hydrogen into the solid-state hydrogen storage device; the real-time temperature inside the solid-state hydrogen storage device is obtained; when the real-time temperature is greater than the first preset temperature, the first circulation pump is controlled to operate, 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; when the real-time temperature is greater than the second preset temperature, the hydrogen discharge end of the solid-state hydrogen storage device is controlled to discharge the hydrogen that has undergone heat exchange to a bypass pipe, and the second hydrogen inlet end of the solid-state hydrogen storage device is controlled 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.

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 high-efficiency hydrogen charging system. Background Art

[0002] Hydrogen storage technologies primarily include material storage and physical storage. Physical hydrogen storage is divided into gaseous and liquid forms. Gaseous hydrogen storage, due to its advantages such as rapid charging and discharging, low energy consumption, low cost, and mature technology, has become the leading commercially available hydrogen storage technology. Solid-state hydrogen storage technology, with its high volumetric hydrogen storage density, safety, lack of a high-pressure container, and ability to increase hydrogen purity, can address the two most pressing issues of hydrogen energy: high-density storage and safe application. Furthermore, the hydrogen pressure generated by PEM and AEM water electrolysis meets the solid-state hydrogen storage charging pressure, making solid-state hydrogen storage technology considered one of the best hydrogen storage methods for off-grid power generation in conjunction with renewable energy.

[0003] Solid-state hydrogen storage utilizes the physical and chemical adsorption of hydrogen to store it within a solid material. During the hydrogen charging process, the alloy hydrogen storage material, under certain temperatures and hydrogen pressures, undergoes an exothermic reaction, absorbing hydrogen to form metal hydrides. Existing technologies dissipate the heat generated by hydrogen charging in a water bath, but this heat dissipation is inefficient, resulting in high temperatures within the device and affecting charging efficiency. Summary of the Invention

[0004] In response to the above 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 present application provides a solid-state hydrogen storage and efficient hydrogen charging system, including a solid-state hydrogen storage device, a heat exchanger is provided 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 provided 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 provided on the bypass pipeline;

[0006] The solid-state hydrogen storage device charging hydrogen comprises:

[0007] Connecting a hydrogenation gun to a first hydrogen inlet end of a solid-state hydrogen storage device, opening the hydrogenation gun and charging 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 circulating 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, controlling the hydrogen discharge end of the solid-state hydrogen storage device to discharge the heat-exchanged hydrogen into the bypass pipe, and controlling the second hydrogen inlet end of the solid-state hydrogen storage device 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 provided 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 provided on the bypass pipe, and the cooling pipe is provided 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 the hydrogen filling gun to the first hydrogen inlet end of the solid-state hydrogen storage device, open the hydrogen filling gun and fill the solid-state hydrogen storage device with a preset capacity of hydrogen; 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 work, 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 the bypass pipe, 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 the 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 schematic structural diagram of a solid-state hydrogen storage and high-efficiency 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 this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting this application. All other embodiments obtained by ordinary technicians in this 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 describes 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 explanation will be added. In the following description, the terms "first\second\third" are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first\second\third" can be interchanged with 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 commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0030] The present invention provides a solid-state hydrogen storage and high-efficiency 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 as follows: Figure 1 As shown, it includes a solid-state hydrogen storage device 1, a heat exchanger 2 is provided on the outside of the solid-state hydrogen storage device 1, the liquid inlet and liquid outlet of the heat exchanger 2 are connected through a circulation pipe 3, the circulation pipe 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 pipe 10, and the bypass pipe 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 port 7 of the solid-state hydrogen storage device 1, open the hydrogenation gun and fill the solid-state hydrogen storage device 1 with a preset volume of hydrogen;

[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 operate, 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 that has undergone 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 that has been 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 saturation state, and hydrogen charging stops.

[0037] In the embodiment of the present application, before the solid-state hydrogen storage device 1 is filled 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, thereby forming a loop. The hydrogen filling gun is connected to the first hydrogen inlet end 7 of the solid-state hydrogen storage device 1 to fill hydrogen into the solid-state hydrogen storage device 1. The hydrogen storage material in the solid-state hydrogen storage device 1 absorbs hydrogen and releases heat, causing the temperature in the solid-state hydrogen storage device 1 to rise. 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 operate 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 to be within the optimal temperature range, which can ensure the hydrogen filling efficiency of the solid-state hydrogen storage device 1 and avoid the hydrogen filling temperature being too high, 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 rise over 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. This can ensure the hydrogen filling efficiency of the solid-state hydrogen storage device 1 and avoid the hydrogen filling temperature being too high, which affects the hydrogen filling efficiency. In summary, the hydrogen filling temperature can be effectively controlled within the optimal temperature range, thereby improving the hydrogen filling efficiency.

[0038] In some embodiments, the solid-state hydrogen storage device 1 is provided with a mass flow meter, which 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 provided 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, as 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. The cooling pipe 12 exchanges heat with the cooling medium in the liquid storage tank 5, thereby cooling the hot hydrogen in the bypass pipe 10 and improving heat dissipation efficiency. The cooling pipe 12 is a spiral pipe, which increases the contact area with the cooling medium in the liquid storage tank 5, thereby effectively dissipating heat from the hot hydrogen in the bypass pipe 10.

[0044] In some embodiments, the first circulation pump 6 is an adjustable circulation pump. When the real-time temperature is greater than a 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 at the first output, controlling 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 satisfied. Therefore, the output of the first circulation pump 6 can be adjusted and the first circulation pump 6 can be controlled to operate at the second output to speed up 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 in 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 the 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 the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. 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 serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0050] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, object, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, object, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, object, or apparatus comprising the element.

[0051] The above is merely an embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A solid-state hydrogen storage and high-efficiency hydrogen charging system, characterized in that: The solid-state hydrogen storage device comprises a heat exchanger provided on the outside of the solid-state hydrogen storage device, the liquid inlet and liquid outlet of the heat exchanger are connected through a circulation pipeline, the circulation pipeline is provided with a cooling device, a liquid storage tank and a first circulation pump, 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 the bypass pipeline is provided with a second circulation pump; The bypass pipe is provided with a cooling pipe, and the cooling pipe is provided in the liquid storage tank; wherein the cooling pipe is a spiral pipe; The solid-state hydrogen storage device charging hydrogen comprises: Connecting a hydrogenation gun to a first hydrogen inlet end of a solid-state hydrogen storage device, opening the hydrogenation gun and charging 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 a first preset temperature, the first circulating 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; wherein the first circulating pump is an adjustable circulating pump, and when the real-time temperature is greater than the first preset temperature, the first circulating pump is controlled to operate at a first output; When the real-time temperature is greater than a second preset temperature, controlling the hydrogen discharge end of the solid-state hydrogen storage device to discharge the heat-exchanged hydrogen into the bypass pipe, and controlling the second hydrogen inlet end of the solid-state hydrogen storage device to be filled with hydrogen cooled by the liquid storage tank, wherein the second preset temperature is greater than the first preset temperature; When the real-time temperature is greater than a third preset temperature, controlling the first circulation pump to operate at a second output, cooling the cooling medium in the heat exchanger through the cooling device and then returning it 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; 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, which 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.

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