High-efficiency low-energy-consumption solid hydrogen storage and desorption system

Abstract

An efficient low-energy-consumption solid hydrogen storage and desorption system comprises hydrogen storage modules, hydrogen desorption modules and a control module, and the number of the hydrogen storage modules and the number of the hydrogen desorption modules can be adjusted according to the requirements of the external hydrogen storage amount and the external hydrogen desorption amount. The heat exchange module is used for providing heat and cold for the hydrogen storage module and the hydrogen release module, and the heat exchange modes of the heat exchange module are diversified and adjustable; the pressurization module is used for adjusting the pressure of the hydrogen storage module in the hydrogen storage process. According to the invention, hydrogen produced by electrolyzing water and hydrogen provided by other low-pressure hydrogen sources can be pressurized and then subjected to solid hydrogen storage, and an external hydrogen source with pressure can be directly subjected to solid hydrogen storage, so that the hydrogen storage modes are diversified. The system further provides a heat exchange module with a temperature adjusting function, a heater direct heating mode can be adopted, a heat exchange mode can also be adopted to utilize low-grade energy, comprehensive energy consumption is reduced, and energy conservation and emission reduction are achieved. The invention relates to an efficient low-energy-consumption solid hydrogen storage and desorption system suitable for hydrogen filling of a pressure-free or low-pressure hydrogen source.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen energy technology-related equipment, and more specifically, to a high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system. Background Art

[0002] In the prior art, for high-pressure gaseous, high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation systems, there are the following technical problems: 1. High hydrogen storage pressure, the existing high-pressure hydrogen storage is generally 35MPa; 2. Low hydrogen storage volume density, taking 35MPa high-pressure hydrogen storage as an example, its hydrogen storage density is about 25g / L; 3. High pressurization energy consumption, pressurizing hydrogen to 35MPa, its single-stage energy consumption is about 5Kw·h / kgH2 at the lowest; 4. High requirements for hydrogen-adjacent materials, prone to hydrogen embrittlement; 5. High risk of hydrogen leakage, and difficult to control after leakage. At the same time, the output pipelines connected to the high-pressure gas storage container have very strict pressure requirements. Especially in summer, affected by the ambient temperature, the pressure of the high-pressure gas storage container will increase, thereby increasing the risk factor of the entire device.

[0003] For solid-state high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation systems, although solid-state high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation systems have the advantages of high hydrogen storage volume density, low working pressure, good safety, and long-term storage, when the hydrogen storage module of the solid-state high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system accepts an external hydrogen source, the external hydrogen source also needs to have a certain pressure to ensure that the hydrogen is absorbed by the hydrogen storage module, especially when the external hydrogen source has a hydrogen production device. The hydrogen production device cannot provide hydrogen pressure, resulting in the hydrogen not being well absorbed by the hydrogen storage module. Summary of the invention

[0004] 1. Technical issues

[0005] In summary, how to provide a solid-state, high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system suitable for hydrogen charging with a pressure-free hydrogen source has become an urgent problem to be solved by those skilled in the art.

[0006] (II) Technical solution

[0007] The purpose of the present invention is to provide a high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system for storing and releasing hydrogen. The present invention can selectively charge the hydrogen storage module with hydrogen according to the pressure of an external hydrogen source;

[0008] The high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system comprises a booster module, and the booster module comprises an air compressor and / or a booster pump and / or a buffer tank;

[0009] When the buffer tank is provided, when the external hydrogen source has no pressure or the pressure is lower than 1.3 MPa, the buffer tank is connected to the external hydrogen source, and the air compressor provides power to the booster pump to drive the booster pump to work on the buffer tank, and the hydrogen in the buffer tank is pressurized by the booster pump, so that the hydrogen in the buffer tank can charge the hydrogen storage module;

[0010] When the buffer tank is not provided, when the external hydrogen source has no pressure or the pressure is lower than 1.3 MPa, when the external hydrogen source charges the hydrogen storage module with hydrogen, the air compressor provides kinetic energy to the booster pump to drive the booster pump to pressurize the hydrogen, and the booster pump provides the pressurized hydrogen to the hydrogen storage module for hydrogen charging;

[0011] When the pressure of the external hydrogen source meets the requirement or is not less than 1.3 MPa, the external hydrogen source directly charges the hydrogen storage module with hydrogen.

[0012] Preferably, the high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system provided by the present invention further includes: a hydrogen storage module, a hydrogen dehydrogenation module, a control module, and a heat exchange module; the hydrogen storage module is connected to the hydrogen dehydrogenation module, the hydrogen storage module is used to supply and discharge hydrogen to the hydrogen dehydrogenation module, the control module is used to control the storage of hydrogen by the hydrogen storage module and the start and stop of hydrogen dehydrogenation by the hydrogen dehydrogenation module, the hydrogen storage module, the hydrogen dehydrogenation module and the control module are all arranged in the high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system of the high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system; the heat exchange module is used to provide heat and cold to the hydrogen storage module, and the heat exchange mode of the heat exchange module is diverse and adjustable.

[0013] Preferably, in the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system provided by the present invention, the hydrogen storage module includes a plurality of hydrogen storage units, each of which can operate independently, and the independent operation includes only hydrogen storage, only hydrogen dehydrogenation, and simultaneous hydrogen storage and dehydrogenation; the working mode of the hydrogen storage unit and the heat exchange mode of the heat exchange module are freely combined.

[0014] Preferably, in the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention, the working mode of the hydrogen storage unit and the heat exchange mode of the heat exchange module are combined as follows:

[0015] A. One hydrogen storage unit is charged with hydrogen or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module uses only one set of cooling methods; at the same time, another hydrogen storage unit is discharged with hydrogen or multiple hydrogen storage units are discharged with hydrogen, and the heat exchange module uses only one set of heating methods;

[0016] B. One hydrogen storage unit or multiple hydrogen storage units are only charged with hydrogen, and the heat exchange module uses only one combination of cooling methods;

[0017] C. One hydrogen storage unit or multiple hydrogen storage units simultaneously only release hydrogen, and the heat exchange module only uses a combination of one set of heating methods;

[0018] D. One hydrogen storage unit or multiple hydrogen storage units are only charged with hydrogen, and the heat exchange module uses a combination of two cooling methods;

[0019] E. One hydrogen storage unit or multiple hydrogen storage units simultaneously only release hydrogen, and the heat exchange module uses a combination of two groups of heating methods;

[0020] F. One hydrogen storage unit is charged with hydrogen or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module is cooled by two sets of cooling methods; at the same time, another hydrogen storage unit is discharged with hydrogen or multiple hydrogen storage units are discharged with hydrogen, and the heat exchange module only uses a combination of one set of heating methods;

[0021] G. When one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, the heat exchange module uses one set of cooling methods for cooling; at the same time, when another hydrogen storage unit or multiple hydrogen storage units are discharged with hydrogen, the heat exchange module uses a combination of two sets of heating methods;

[0022] H. When one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, the heat exchange module uses two sets of cooling methods for cooling; at the same time, when another hydrogen storage unit or multiple hydrogen storage units are discharged with hydrogen, the heat exchange module uses a combination of two sets of heating methods.

[0023] Preferably, in the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention, the number of hydrogen storage modules is adjustable; in one hydrogen storage module, the number of hydrogen storage units is adjustable; the number of dehydrogenation modules is adjustable; in one dehydrogenation module, the number of hydrogen charging units is adjustable.

[0024] Preferably, in the high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system provided by the present invention, the heat exchange module includes a heating module and / or a cooling module; the cooling module is a chiller that can directly provide cooling or a heat exchanger that can provide cooling by heat exchange; the heating module is a heater that can directly provide thermal energy or a heat exchanger that can provide thermal energy by heat exchange; the heating module and the cooling module can perform temperature adjustment separately or work together to adjust the temperature; in the heating module, the heater and the heat exchanger can work separately for heating or work together for heating; in the cooling module, the chiller and the heat exchanger can work separately for cooling and cooling, or work together for cooling and cooling.

[0025] Preferably, in the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention, when the cooling module is started alone, an external hydrogen source performs a hydrogen charging operation on the hydrogen storage module; when the heating module is started alone, the hydrogen storage module performs a hydrogen dehydrogenation operation on the hydrogen dehydrogenation module; when there are multiple hydrogen storage modules, some of the hydrogen storage modules need to be charged with hydrogen and other parts of the hydrogen storage modules need to be dehydrogenated, then the cooling module provides coldness to the hydrogen storage modules being charged with hydrogen to improve the hydrogen absorption effect of the hydrogen storage modules, and the heating module provides heat to the hydrogen storage modules being dehydrogenated to improve the hydrogen dehydrogenation effect of the hydrogen storage modules.

[0026] Preferably, in the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention, the cooling module uses water or a heat exchange medium as a cold carrier to provide cold energy to the hydrogen storage module; the heating module uses water or a heat exchange medium as a heating carrier to provide heat to the hydrogen storage module; when the heat exchange medium is used as a cold carrier, the cooling module is provided with an expansion tank.

[0027] Preferably, in the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system provided by the present invention, the combinations of the hydrogen storage and dehydrogenation working states of the hydrogen storage module are 2, 4, 8, 16...2n, where n represents the number of hydrogen storage units; and the combinations of the hydrogen storage and dehydrogenation working states of the hydrogen storage module and the maintenance state of hydrogen in the hydrogen storage unit are 2, 4, 8, 16...2K, where K represents the number of hydrogen storage units set.

[0028] Preferably, in the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention, the metal solid-state hydrogen storage material used in the hydrogen storage module is AB2 type, AB5 type or BCC solid solution material.

[0029] (III) Beneficial effects

[0030] From the above, it can be seen that the present invention provides a high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system for storing and releasing hydrogen. The high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system provided by the present invention can selectively charge the hydrogen storage module according to the pressure of the external hydrogen source. The high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system includes a boosting module, and the boosting module includes an air compressor, a boosting pump and / or a buffer tank (in the present invention, the air compressor and the boosting pump are structures that must be set, and the buffer tank is an optional equipment, which is selectively set or not set according to customer requirements and actual application scenarios); when a buffer tank is provided, when the external hydrogen source has no pressure or the pressure is lower than 1.3MPa, the buffer tank is connected to the external hydrogen source, and the air compressor provides power to the boosting pump to drive the boosting pump to work on the buffer tank, The hydrogen in the buffer tank is pressurized by a booster pump so that the hydrogen in the buffer tank can charge the hydrogen storage module. When no buffer tank is provided, when the external hydrogen source has no pressure or the pressure is lower than 1.3MPa, when the external hydrogen source charges the hydrogen storage module, the air compressor provides kinetic energy to the booster pump to drive the booster pump to pressurize the hydrogen, and the booster pump provides the pressurized hydrogen to the hydrogen storage module for charging. When the pressure of the external hydrogen source meets the requirements or the pressure is not less than 1.3MPa, the external hydrogen source directly charges the hydrogen storage module.

[0031] The present invention can pressurize the hydrogen produced by water electrolysis and other low-pressure hydrogen sources to 3MPa to 4MPa for solid-state hydrogen storage. The pressurization amplitude is low, so the energy consumption of the pressurization link is low. In the present invention, hydrogen is pressurized to 3MPa to 4MPa, and only a relatively low pressure is needed to achieve hydrogen storage. Since the pressure increase is small, the requirements for the pressurization equipment are low, and the system operation safety is also high. The present invention also provides a heat exchange module with a temperature regulation function, which can use a heater direct heating method, and can also use a heat exchange method to utilize low-grade energy, or the heat exchange and direct heating (direct heating is direct heating using a heater) working mode complement each other, and provide a variety of temperature regulation methods. Since the present invention adopts solid-state hydrogen storage technology, the temperature regulation during the hydrogen storage and dehydrogenation process can be achieved by temperature regulation. At the same time, the temperature regulation can also adopt a heat exchange heating mode, which improves the utilization rate of low-grade energy, reduces comprehensive energy consumption, and achieves energy conservation and emission reduction. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention is a solid-state, high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system suitable for hydrogen charging with a pressure-free hydrogen source. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0033] Figure 1It is a schematic diagram of the three-dimensional structure of a high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention;

[0034] Figure 2 It is a schematic diagram of the main structure of a high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention;

[0035] Figure 3a It is a schematic diagram of the hydrogen charging and dehydrogenating modes of the high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention;

[0036] Figure 3b This is a schematic diagram of the first heat exchange mode of the high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention;

[0037] Figure 3c This is a schematic diagram of a second heat exchange mode of a high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention;

[0038] Figure 3d This is a schematic diagram of the third heat exchange mode of the high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention;

[0039] Figure 3e It is a schematic diagram of a system in which a single or multiple hydrogen storage devices in a high-efficiency and low-energy consumption solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention only realize hydrogen charging or only realize hydrogen dehydrogenation;

[0040] Figure 3f This is a schematic diagram of a system in which a single or multiple hydrogen storage devices of a high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system in an embodiment of the present invention realize hydrogen charging while another single or multiple hydrogen storage devices realize hydrogen dehydrogenation.

[0041] in Figure 3a to Figure 3f The solid arrows show the flow direction and passage of hydrogen, and the remaining arrows show the flow direction and passage of the heat exchange medium.

[0042] In addition, in the accompanying drawings Figures 3a to 3e In the figure, the hydrogen storage device marked therein can be understood as a hydrogen storage module (a hydrogen storage module is directly composed of multiple hydrogen storage units); Figure 3f In the figure, the hydrogen storage device marked therein can be understood as a hydrogen storage device composed of multiple hydrogen storage units, and multiple hydrogen storage devices further constitute a hydrogen storage module.

[0043] exist Figure 1 and Figure 2 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0044] High-efficiency and low-energy consumption solid-state hydrogen storage and dehydrogenation device 1000;

[0045] A hydrogen storage module 1100, a first hydrogen storage device 1110, a second hydrogen storage device 1120, a third hydrogen storage device 1130, a heating module 1140, and a cooling module 1150;

[0046] Hydrogen release module 1200; control module 1300;

[0047] Booster module 1400 , air compressor 1410 , booster pump 1420 , buffer tank 1430 . DETAILED DESCRIPTION

[0048] The purpose of the present invention is to provide a high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system to solve the problem that the existing solid-state high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system requires a hydrogen source of a certain pressure to be able to charge hydrogen. In addition, the present invention can also simultaneously solve the problem that the pressure of the high-pressure gaseous high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system is too high and there are safety hazards, as well as solve the high-pressure gaseous high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system. High energy consumption, inability to continuously dehydrogenate and other problems.

[0049] Based on the above invention purpose, the present invention provides a high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system. In the present invention, the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation device mainly includes three components: 1. Hydrogen storage module, which is a room-temperature solid-state hydrogen storage structure for storing hydrogen at room temperature and low pressure; 2. Hydrogen dehydrogenation module, which is connected to the hydrogen storage module; 3. Control module, which realizes hydrogen storage and dehydrogenation control by opening and closing the valve on the pipeline. Among them, the pipeline is used to realize the connection between the dehydrogenation module and the hydrogen storage module. The hydrogen storage module adopts a room-temperature solid-state hydrogen storage structure, which can store hydrogen at close to room temperature and low pressure. The present invention also provides a pipeline for realizing the connection between each hydrogen storage device (or hydrogen storage unit) in the hydrogen storage module, and the connection between the hydrogen storage module and the dehydrogenation module. The dehydrogenation module includes a plurality of dehydrogenation components (connector components for externally outputting hydrogen), which can also be called dehydrogenation connectors, and each dehydrogenation component can dehydrogenate an external hydrogen storage bottle. In the hydrogen discharge module, each hydrogen discharge component is a parallel structure, that is, a main hydrogen discharge pipeline is led out from the hydrogen storage module, and a plurality of hydrogen discharge branch pipes are connected to the main hydrogen discharge pipeline, each hydrogen discharge branch pipe is a parallel structure, and one hydrogen discharge branch pipe is connected to one hydrogen discharge component. In an embodiment of the present invention, one hydrogen discharge branch pipe is connected to at least one hydrogen discharge component (one hydrogen discharge branch pipe is connected to one hydrogen discharge component, and since all hydrogen discharge branch pipes are in parallel, each hydrogen discharge component is also in a parallel structure; one hydrogen discharge branch pipe is connected to two or more hydrogen discharge components, and all hydrogen discharge components connected to the corresponding hydrogen discharge branch pipes are in a series structure). By arranging valves (including power valves and ball valves) on the hydrogen storage module and the connecting pipeline of the hydrogen discharge module, the independent operation control of each minimum hydrogen storage unit in the hydrogen storage module (the hydrogen storage module includes one or more hydrogen storage devices, and the hydrogen storage device includes one or more hydrogen storage units), that is, the hydrogen storage device, can be realized, and the independent operation control of the minimum hydrogen discharge unit in the hydrogen discharge module, that is, the hydrogen discharge component can be realized.

[0050] Please refer to Figure 3. In the present invention, the minimum unit for realizing hydrogen storage is a hydrogen storage unit. A plurality of hydrogen storage units can form a hydrogen storage device, and a plurality of hydrogen storage devices can form a hydrogen storage module; alternatively, a hydrogen storage module is directly composed of a plurality of hydrogen storage units.

[0051] The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention can store low-pressure hydrogen (low-pressure hydrogen means a pressure lower than 1.3MPa), and can store ordinary low-pressure hydrogen in a hydrogen storage module by pressurizing (the present invention provides two pressurizing methods, one is direct pressurization by a booster pump, and the other is pressurization by a booster pump after hydrogen is stored in a buffer tank), and use the hydrogen storage module to quickly absorb hydrogen. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention can directly store pressurized hydrogen in a hydrogen storage module. Figure 3a As shown, in Figure 3a The CPC demonstrated three hydrogen storage methods, namely: Path 1, directly charging the hydrogen storage module with hydrogen through the hydrogen charging interface; Path 2, charging the hydrogen storage module with hydrogen through the hydrogen charging interface through a booster pump; Path 3, connecting the hydrogen charging interface to the buffer tank and then charging the hydrogen storage module with hydrogen through a booster pump. Choose one of the three hydrogen storage methods to charge the hydrogen storage module. There is one hydrogen discharge method, that is, directly discharging hydrogen from the hydrogen storage module.

[0052] The advantages of the present invention are: 1. The hydrogen storage module is a solid-state hydrogen storage module, which has a high hydrogen storage density per unit volume, low storage pressure and good safety performance; 2. The hydrogen storage module and the hydrogen release module are both modularly designed, and the number of modules can be increased / decreased according to demand to adjust the hydrogen storage capacity; 3. A temperature adjustment function is provided, which can quickly release hydrogen by increasing the temperature. The system has a reserved hydrogen interface, which can be used to charge solid-state hydrogen storage bottles with hydrogen, and can also be used as a hydrogen source to connect to a fuel cell system; 4. The system can realize automatic hydrogen charging and decharging of the system through automatic monitoring and control.

[0053] The control module uses an industrial controller, which can receive signals, receive control instructions, and issue control instructions. The received signals include monitoring signals from hydrogen concentration sensors, pipeline pressure signals, hydrogen storage working signals, hydrogen release working signals, alarm signals, and signals for the normal operation of other auxiliary equipment; the received control instructions include instructions input from the control operation screen, control instructions input from the remote end or the cloud, and voice input control instructions; the issued control instructions include control instructions to various valves and other electronic control devices, hydrogen charging instructions to the hydrogen storage module, hydrogen release instructions to the hydrogen release module, and instructions for the normal operation of other auxiliary equipment.

[0054] During the hydrogen storage process, when facing pressure-free hydrogen discharge (the external hydrogen source is pressure-free, or the pressure is lower than 1.3MPa), the present invention also provides a boosting module, which boosts the hydrogen during the hydrogen filling process of the hydrogen storage module. Specifically, the boosting module includes an air compressor, a boosting pump and a buffer tank. The air compressor is connected to the boosting pump to provide kinetic energy to the boosting pump, such as the air compressor provides power to drive the boosting pump to operate, and the boosting pump can pressurize the hydrogen. In an embodiment in which a buffer tank is provided, the external hydrogen first enters the buffer tank, the buffer tank is connected to the boosting pump, the boosting pump is connected to the hydrogen storage module, and the hydrogen is pressurized by the boosting pump before charging the hydrogen storage module. The above-mentioned structural arrangement can make the hydrogen storage module have a larger selection range for the external hydrogen source when charging hydrogen, and the degree of integration with the external hydrogen source is higher, and it can be applicable to external hydrogen sources of various pressures. According to different application scenarios, the buffer tank is an alternative equipment, and the boosting pump can directly pressurize the hydrogen for hydrogen storage in an embodiment in which a buffer tank is not provided.

[0055] In order to improve the safety of the operation of the present invention, the present invention is further provided with a monitoring module, which includes a monitoring sensor for monitoring the hydrogen concentration within a monitoring range. The monitoring sensor is connected to the control module signal, and the control module controls the operation of the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system according to the real-time hydrogen concentration obtained by the monitoring sensor. The monitoring range specifically refers to the area where the object monitored by the monitoring sensor is located. For example, when the monitoring object of the monitoring sensor is a hydrogen storage module, the monitoring range refers to the hydrogen storage module and a small area around it.

[0056] The monitoring sensor can be specifically set according to the safety requirements of equipment operation. For example, one monitoring sensor can be set, and the monitoring sensor is set at the internal center of the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system. In this way, no matter where a leak occurs inside the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system, as long as the concentration exceeds the upper limit of the monitoring threshold, the monitoring sensor or control module can send an alarm signal. Multiple monitoring sensors can also be set, respectively close to the hydrogen storage module, the dehydrogenation module, and the location where hydrogen leakage is prone to occur. When one of the monitoring sensors sends an alarm signal, the control module can confirm the location of the hydrogen leakage, allowing maintenance personnel to quickly repair the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system.

[0057] Furthermore, the monitoring module of the present invention also includes a pressure sensor, which is used to monitor the pipeline pressure (hydrogen pressure transported in the pipeline) in real time, and the hydrogen release rate can be adjusted and controlled by obtaining the pipeline pressure signal. Of course, when a pipeline fails, such as a pipeline leak, the pressure signal drops rapidly, and the pressure sensor can warn the public that there is a hydrogen leak. For example, if the pipeline is blocked, the pressure signal will increase abnormally, and the pressure sensor can warn the public that the pipeline is blocked.

[0058] In the present invention, the hydrogen storage module is preferably provided with a plurality of hydrogen storage devices, all of which are connected by pipelines and at least two of which are in parallel. For example, in a specific embodiment of the present invention, the hydrogen storage module includes six hydrogen storage devices: the six hydrogen storage devices can all be connected in parallel; they can also be connected in series in groups of two, and then in parallel in groups of three; they can also be connected in series in groups of three, and then in parallel in groups of two, and so on. Regarding the specific connection method of the hydrogen storage device, the present invention can be designed according to actual needs, customer requirements, etc., and is not specifically limited here.

[0059] Based on the above design, when the hydrogen storage device includes at least two hydrogen storage units, each hydrogen storage unit can be charged and / or discharged independently. When each hydrogen storage unit is charged and / or discharged simultaneously, the pressure of each hydrogen storage unit is consistent and the proportion of hydrogen storage is consistent. Furthermore, in the hydrogen storage module, each hydrogen storage device can operate independently, and the operation includes performing hydrogen storage operation alone, performing hydrogen discharge operation alone, and performing hydrogen storage and discharge in parallel.

[0060] The present invention also provides a heat exchange module, which includes a heating module and a cooling module. The heating module can be a heater and / or a heat exchanger, which can heat the heat exchange medium, and the cooling module can use any cooling equipment in the prior art, which can cool the heat exchange medium. The heating module provides heat through the heat exchange medium, and the cooling module provides cooling through the heat exchange medium. The heat exchange medium realizes the exchange of heat or cooling and the regulation of the hydrogen temperature by contacting with the pipeline. The heat exchange medium can be water, a heat exchange agent, etc. It should be noted that: although the hydrogen storage and hydrogen charging system provided by the present invention provides a heat exchange module for adjusting the temperature during hydrogen storage and hydrogen discharge, they are all regulated close to room temperature (that is, the temperature is close to room temperature during hydrogen charging and hydrogen discharge). Compared with the hydrogen absorption temperature and hydrogen discharge temperature of the prior art, the temperature control of the present invention during operation is very low (compared with the hydrogen discharge temperature of more than 100°C in the prior art, the temperature close to room temperature is very low).

[0061] The present invention adopts a hydrogen storage and hydrogen filling system with solid-state hydrogen storage, which has low pressure requirements for the external hydrogen source. When the external hydrogen source has no pressure, the hydrogen pressure entering the buffer tank 1430 is given by the booster module 1400 to smoothly charge the hydrogen storage module 1100. The booster structure is simple, and the increased pressure only needs to be greater than 1.3MPa. Normally, the pressure is increased to 3MPa to 4MPa for solid-state hydrogen storage, which is much lower than the 70Mpa of high-pressure hydrogen storage (the hydrogen is pressurized to 3MPa to 4MPa, and only a relatively low pressure is needed to achieve hydrogen storage. The present invention has a small increase in hydrogen storage pressure, a low requirement for booster equipment, and a high system operation safety), and its hydrogen filling is safe and reliable. And according to whether the actual external hydrogen source has an initial pressure, any one of the three hydrogen filling methods can be selected, and the operation is more flexible and the selection is wider.

[0062] It should be noted that the present invention can not only store hydrogen, but also serve as a hydrogen source to release hydrogen to the outside, and can also serve as a hydrogen transfer station to transfer external hydrogen sources to other hydrogen storage devices.

[0063] The hydrogen storage module 1100 includes a hydrogen storage device, which has one, two or more hydrogen storage units, and a single hydrogen storage unit can independently store and release hydrogen. When the number of hydrogen storage units provided in the hydrogen storage device is two or more, the gas pipes at the head end of the hydrogen storage device are connected in parallel, or the gas pipes at the tail end are connected in parallel, or the gas pipes at the head end and the tail end are connected in parallel, and the heat exchange pipes at the head end of the hydrogen storage device are connected in parallel, or the heat exchange pipes at the tail end are connected in parallel, or the heat exchange pipes at the head end and the tail end are connected in parallel. In addition, the heat exchange pipes of the hydrogen storage device are connected in series with the heat exchange module for heating and / or cooling the hydrogen storage device.

[0064] The present invention is also provided with a heat exchange module, and the heat exchange module is provided with a heating module 1140 for heating the hydrogen storage unit when dehydrogenating and a cooling module 1150 for cooling the hydrogen storage unit when storing hydrogen. The heating module 1140 and the cooling module 1150 can be an integrated heat pump structure, or a separate heating module 1140 structure and a separate cooling module 1150 structure. During the process of hydrogen storage or dehydrogenation, the heat exchange module adjusts the temperature of the hydrogen storage unit, specifically: the temperature is controlled at 5°C to 20°C when hydrogen is absorbed, and the temperature is controlled at 30°C to 60°C when hydrogen is discharged. Both the above-mentioned hydrogen absorption temperature control and hydrogen discharge temperature control belong to the near room temperature range. Compared with the existing hydrogen discharge temperature of more than 100°C, the present invention belongs to low-temperature operation (low temperature control during operation), low heat exchange temperature, high overall system operation safety and reliability, high heat exchange efficiency, and low energy consumption.

[0065] The heating module 1140 and the cooling module 1150 are used to heat and cool the heat exchange medium, which may be water, a heat exchange agent, etc. The heating module 1140 and the cooling module 1150 also require regular maintenance and inspection of their working status and working performance.

[0066] Based on the structural design of the above hydrogen storage module, multiple hydrogen storage devices are set in the hydrogen storage module, and the combinations of hydrogen storage and hydrogen release working states are 2, 4, 8, 16...2 nSpecifically, take the hydrogen storage module having the first hydrogen storage device 1110, the second hydrogen storage device 1120, and the third hydrogen storage device 1130 as an example for explanation: when the hydrogen storage module only has or uses the first hydrogen storage device 1110, the first hydrogen storage device 1110 has only two working states: charging and discharging hydrogen; when the hydrogen storage module has or uses the first hydrogen storage device 1110 and the second hydrogen storage device 1120, there are four combinations of the charging and discharging working states of the first hydrogen storage device 1110 and the second hydrogen storage device 1120 (the first hydrogen storage device 1110 and the second hydrogen storage device 1120). The first hydrogen storage device 1110 and the second hydrogen storage device 1120 are charged with hydrogen at the same time; the first hydrogen storage device 1110 and the second hydrogen storage device 1120 are charged with hydrogen and discharged with hydrogen at the same time; the first hydrogen storage device 1110 is charged with hydrogen and the second hydrogen storage device 1120 is discharged with hydrogen; the first hydrogen storage device 1110 is discharged with hydrogen and the second hydrogen storage device 1120 is charged with hydrogen); when the hydrogen storage module has or only uses the first hydrogen storage device 1110, the second hydrogen storage device 1120 and the third hydrogen storage device 1130, there are eight combinations of the charging and discharging working states of the first hydrogen storage device 1110, the second hydrogen storage device 1120 and the third hydrogen storage device 1130 (2 3 ), and so on, the number of final state combinations is 2 n When the hydrogen storage module is directly composed of multiple hydrogen storage units, the above-mentioned hydrogen storage device can be directly understood as a hydrogen storage unit.

[0067] As the number of hydrogen storage devices increases, the hydrogen charging and degassing combinations of hydrogen storage devices increase exponentially. Such a diverse combination can make the application range of hydrogen storage modules wider, which can meet the needs of different hydrogen storage and degassing amounts. At the same time, there are more options for hydrogen storage and degassing. The parallel structure adopted by the present invention effectively avoids the risk of paralysis of the overall high-efficiency and low-energy solid-state hydrogen storage and degassing system when a single hydrogen storage device fails or is damaged and leaks.

[0068] In addition, in the hydrogen storage module, the combination of the working state of the hydrogen storage device for storing and releasing hydrogen and the hydrogen holding state in the hydrogen storage device is 2, 4, 8, 16...2 K The hydrogen storage device of the present invention is in a hydrogen-maintaining state, that is, the hydrogen storage device contains hydrogen, that is, it does not accept hydrogen provided by an external hydrogen source for hydrogen storage, nor does it release hydrogen to the outside.

[0069] The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system structure provided by the present invention mainly includes three indispensable parts: a hydrogen storage module 1100, a hydrogen dehydrogenation module 1200, and a control module 1300. At the same time, it is also necessary to meet the requirement that the hydrogen storage device in the hydrogen storage module connects hydrogen pipes and / or heat exchange pipes in parallel, and the connecting ends of the parallel hydrogen pipes and / or heat exchange pipes are connected in series with the heating module 1140 and the cooling module 1150 respectively. Only a high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system that has these constituent conditions at the same time can achieve the best hydrogen storage and dehydrogenation effect, and its structure is also the simplest and the function is the most reliable.

[0070] In another structure, the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system can also be equipped with at least one of the air compressor 1410, the booster pump 1420, and the buffer tank 1430 in the booster module 1400 to adjust the pressure of hydrogen entering the hydrogen storage module 1100, or the booster module 1400 is not used, depending on whether the external hydrogen source has pressure. So that the structure of the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system can achieve the best hydrogen storage and dehydrogenation effect. This high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system structure mainly includes the hydrogen storage module 1100, the dehydrogenation module 1200, and the control module 1300; the booster module 1400 is an optional component, or it can also be used as a preferred optional component.

[0071] The present invention can pressurize the hydrogen produced by water electrolysis and other low-pressure hydrogen sources from 0.1MPa to 1.3MPa to 3MPa to 4MPa for solid hydrogen storage. The pressurization amplitude is low, so the energy consumption of the pressurization link is low (it only needs to be pressurized to 3-4MPa, which is much lower than high-pressure gaseous hydrogen storage and low-temperature liquid hydrogen storage). In actual operation, it only takes 0.4-2.6kW·h / kgH2 to pressurize the low-pressure hydrogen from 0.1MPa to 1.3MPa to 3MPa to 4MPa, which is much lower than the energy consumption of pressurization of high-pressure gaseous hydrogen storage. The present invention also provides a temperature regulation function (this function is realized by a heat exchange module, and the heat exchange module includes a heating module and a cooling module), which can adopt a direct heating method of a heater, and can also adopt a heat exchange method to utilize low-grade energy, or the heat exchange and direct heating (direct heating is direct heating by a heater) working mode complement each other, providing a variety of temperature regulation methods. Since the present invention adopts solid-state hydrogen storage technology, the temperature regulation during the hydrogen storage and dehydrogenation process can be achieved by temperature regulation, and the temperature regulation can also adopt the heat exchange heating mode, thereby improving the utilization rate of low-grade energy, reducing comprehensive energy consumption, and achieving energy conservation and emission reduction. In addition, it is important that the metal solid-state hydrogen storage material used in the hydrogen storage module of the present invention is AB2 type, AB5 type, BCC solid solution material, etc.

[0072] As can be seen from the above, the present invention provides a high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system for storing and releasing hydrogen. In the present invention, the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system includes: a hydrogen storage module 1100, a dehydrogenation module 1200, and a control module 1300; the hydrogen storage module 1100 is connected to the dehydrogenation module 1200 through a pipeline and a valve, the hydrogen storage module 1100 is used to lift and release hydrogen from the dehydrogenation module 1200, and the control module 1300 is used to control the hydrogen storage of the hydrogen storage module 1100 and the start and stop of the dehydrogenation of the dehydrogenation module 1200, and the hydrogen storage module 1100, the dehydrogenation module 1200, and the control module 1300 are all arranged in the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system 1000 of the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system.

[0073] In the present invention, the high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system is an expandable structure, and the hydrogen storage module and the dehydrogenation module, or the hydrogen storage and dehydrogenation system composed of the hydrogen storage module and the dehydrogenation module, can be adjusted in quantity according to the external hydrogen storage and dehydrogenation requirements. When the external hydrogen storage and dehydrogenation do not need to be adjusted, a single hydrogen storage and dehydrogenation system can realize the functions of external hydrogen storage and dehydrogenation. Such a hydrogen storage and dehydrogenation system itself is a modular structure, which can be superimposed according to the use environment. A single hydrogen storage and dehydrogenation system is easy to produce and has strong replaceability.

[0074] In the present invention, a hydrogen storage and dehydrogenation system is composed of a hydrogen storage module, a hydrogen dehydrogenation module, and supporting pipelines and valves. The hydrogen storage module is filled with hydrogen through an external hydrogen source so that the hydrogen is stored in the hydrogen storage module. The present invention can also discharge hydrogen from the hydrogen dehydrogenation module using the hydrogen stored in the hydrogen storage module.

[0075] In the present invention, the hydrogen storage process of the hydrogen storage and dehydrogenation system is as follows:

[0076] Method 1: When the pressure of the external hydrogen source is sufficient or greater than 1.3 MPa, the external hydrogen source needs to directly charge the hydrogen storage module 1100; the external hydrogen source is connected to the hydrogen charging interface of the hydrogen storage and dehydrogenation system, and the hydrogen is continuously monitored by the first pressure sensor 1 to charge the hydrogen into the hydrogen storage module 1100.

[0077] Method 2: When the external hydrogen source has no pressure or the pressure is lower than 1.3MPa, the external hydrogen source needs to directly charge the hydrogen storage module 1100 with hydrogen, and the external hydrogen source is connected to the hydrogen charging interface of the hydrogen storage and dehydrogenation system. After the hydrogen pressure is monitored by the first pressure sensor 1, the hydrogen in the boost pump 1420 is pressurized by the air compressor 1410, and then the hydrogen is charged into the hydrogen storage module 1100.

[0078] Method three: when the external hydrogen source has no pressure or the pressure is lower than 1.3 MPa, the external hydrogen source is connected to the hydrogen charging interface of the hydrogen storage and dehydrogenation system. After the hydrogen pressure is monitored by the first pressure sensor (installed in the pipeline for charging the hydrogen storage device) P1, the buffer tank 1430 is connected to the external hydrogen source, and the air compressor 1410 pressurizes the hydrogen in the boost pump 1420 to drive the boost pump 1420 to work on the buffer tank 1430. The buffer tank 1430 is pressurized by the boost pump 1420 to fill the hydrogen in the buffer tank 1430 into the hydrogen storage module 1100.

[0079] The present invention can configure a ball valve (for manual control) and a power valve (for automatic control) in the hydrogen storage and dehydrogenation system, and can simultaneously realize automatic control and manual control of the hydrogen system (either manual control alone, automatic control alone, or automatic and manual coordinated control). The hydrogen storage and dehydrogenation system has a low pressure requirement for the external hydrogen source. When the external hydrogen source has no pressure, the hydrogen pressure during hydrogen storage is increased by the booster module 1400 to smoothly charge the hydrogen storage module 1100. The booster structure is simple, and the increased pressure only needs to be greater than 1.3MPa, which is much lower than the 70Mpa of high-pressure hydrogen storage, and the hydrogen charging is safe and reliable. And according to whether the actual external hydrogen source has an initial pressure, the booster module 1400 can be selectively selected, so that there are three ways to fill hydrogen during hydrogen storage. The system itself can automatically select and adjust the hydrogen filling method according to the actual external hydrogen source pressure. The hydrogen filling method of the hydrogen storage and dehydrogenation system has a high selectivity and is more flexible to operate.

[0080] In the present invention, the hydrogen release process of the hydrogen storage and dehydrogenation system is as follows: the hydrogen storage module 1100 is turned on, and the second pressure sensor (set at the outlet of the hydrogen storage module) P2 located outside the hydrogen storage module detects the pressure of the hydrogen outlet of the hydrogen storage module. After the hydrogen comes out of the hydrogen storage module 1100, it flows through the third pressure sensor (set on the pipeline of the hydrogen storage module for dehydrogenation) P3 for detecting the dehydrogenation pressure to release hydrogen to the outside. The dehydrogenation part can be equipped with a dehydrogenation module 1200 specially used for hydrogen storage bottle hydrogen filling, a fuel cell, or an interface for connecting a fuel cell.

[0081] The present invention provides a heat exchange module for realizing the supply of heat or cold during the operation of the system. Among them, the cooling module is a chiller, or other devices that can directly provide cold, such as an air conditioner, or a heat exchanger that can provide cold. The heating module is a heater that can directly heat (directly provide heat), or a heat exchanger that indirectly provides heat. The above four temperature adjustment modules can be reasonably configured according to specific circumstances or customer requirements or design requirements. In addition, the heating module and the cooling module in the heat exchange module can be started separately or simultaneously.

[0082] During the storage of hydrogen in the hydrogen storage and dehydrogenation system, the cooling module cools the hydrogen storage module. The working process of the cooling module is as follows:

[0083] In the process of filling the hydrogen storage module 1100 with hydrogen through an external hydrogen source, the hydrogen storage module 1100 is cooled to speed up the hydrogen storage module 1100 to absorb hydrogen from the outside, thereby increasing the hydrogen storage speed and the hydrogen storage capacity.

[0084] Specifically, during the process of filling the hydrogen storage module 1100 with hydrogen through an external hydrogen source, the hydrogen storage module 1100 needs to dissipate heat to ensure the increase of the hydrogen absorption rate by cooling the hydrogen storage module 1100. The cooling module is provided with a heat exchange medium storage box, in which hot water (or other carriers capable of transporting cold energy) is loaded, which flows through a power valve (automatically controlled) to a chiller, and is refrigerated by the chiller. The cooled hot water is transported to the hydrogen storage module 1100 by the action of a pump inside the chiller, so that the hydrogen storage module 1100 releases heat and absorbs hydrogen (it can be achieved by absorbing the heat of the hydrogen storage module through the hot water, or it can be achieved by providing a large amount of cold energy to the hydrogen storage module to directly cool the hydrogen storage module).

[0085] Taking into account that the hydrogen absorption rate can be adjusted by the amount of heat released by the hydrogen storage module 1100, the temperature of the hot water flowing through the hydrogen storage module 1100 can be adjusted by adjusting the cooling temperature of the water in the chiller. The temperature of the hot water entering the hydrogen storage module 1100 is detected by the third temperature sensor T3, and the hot water with a suitable temperature returns to the heat exchange medium storage tank after heat exchange with the hydrogen storage module 1100.

[0086] A power valve (automatic control) is provided on the hot water circulation pipeline. The power valve is used as the main automatic control means, and the control is more accurate. In addition, the present invention is also provided with multiple temperature sensors (which can detect the temperature of different temperature measurement points inside the system). Through the setting of multiple temperature sensors, the cooling temperature of the hot water by the chiller can be effectively detected and controlled, so as to adjust the heating temperature of the hot water according to the hydrogen storage module 1100's hydrogen release rate requirements.

[0087] When a single hydrogen storage module 1100 needs to be replaced or repaired, the ball valves (manual control) on both sides of the single hydrogen storage module 1100 can be closed to achieve replacement or repair of the single hydrogen storage module 1100. The operation is simple and convenient, and the overall structure is simple and easy to implement. When the chiller needs to be repaired and maintained, it can be achieved by closing the ball valves on both sides of the chiller at the same time.

[0088] During the release of hydrogen in the hydrogen storage and dehydrogenation system, the working process of the heating module is as follows:

[0089] In the process of releasing hydrogen stored in the hydrogen storage module 1100 to the hydrogen release module, the hydrogen storage module 1100 is heated to accelerate the release of hydrogen from the hydrogen storage module 1100 to the outside, increase the hydrogen release speed, and enhance the hydrogen release effect.

[0090] Please refer to Figure 3b ,exist Figure 3b Four heat exchange methods are shown in the figure: Path 4, during the process of hydrogen storage device charging by the hydrogen charging interface, cooling is performed by a chiller, which is a separate cooling and cooling method, and is a direct cooling and cooling method; Path 5, during the process of hydrogen storage device charging by the hydrogen charging interface, cooling is performed by a heat exchanger, which is a separate indirect cooling and cooling method, and is an indirect cooling and cooling method; Path 6, during the process of hydrogen storage device dehydrogenation, heating is performed by a heater, which is a separate heating and heating method, and is a direct heating method; Path 7, during the process of hydrogen storage device dehydrogenation, heating is performed by a heat exchanger, which is a separate indirect heating and heating method, and is an indirect heating and heating method. When the hydrogen storage device is charging, one of Path 4 and Path 5 is used, and when the hydrogen storage device is dehydrogenating, one of Path 6 and Path 7 is used.

[0091] Heating method of heating module 1. In the process of releasing hydrogen from the hydrogen storage module, the hydrogen storage module 1100 needs to absorb heat to ensure the increase of hydrogen release rate. The heating module is provided with a heat exchange medium storage box (the heat exchange medium storage box provided by the heating module is different from the heat exchange medium storage box provided by the cooling module). The heat carrier (a fluid used to transport heat, which can be water or other fluids capable of transporting heat) in the heat exchange medium storage box flows through the power valve (automatically controlled) to the heater. The heater is preferably electrically heated. When the hot water (heat carrier) flows to the heater position, the heating The first temperature sensor T1 at the front end of the heater detects the inlet water temperature, and the second temperature sensor T2 (arranged at the front end of the circulation pump) detects the outlet water temperature at the rear end of the heater. When the inlet water temperature is too high, the heater will not be started, and the hot water will directly enter the circulation pump; when the first temperature sensor T1 detects that the inlet water temperature is low, the heater is started, and when the second temperature sensor T2 detects that the temperature of the heat exchange medium heated by the heater is sufficient to enable the hydrogen storage module 1100 to perform normal heat exchange, the hot water is provided to the hydrogen storage module 1100 via the circulation pump for the hydrogen storage module 1100 to absorb heat and release hydrogen.

[0092] Considering that the hydrogen release rate can be adjusted by the amount of heat absorbed by the hydrogen storage module 1100, the temperature of the hot water entering the hydrogen storage module 1100 is detected by the third temperature sensor T3 (set on the heat exchange pipeline at the front end of the hydrogen storage unit), and the hot water with a suitable temperature returns to the heat exchange medium storage box after heat exchange with the hydrogen storage module 1100. When the number of hydrogen storage units set in the hydrogen storage module 1100 is multiple, the water inlet temperature of the hydrogen storage module 1100 is adjusted by the fourth temperature sensor T4 (set on the heat exchange pipeline at the front end of different hydrogen storage units). The power valve (automatic) set in the system mainly realizes the flow control of hydrogen and heat exchange water, so as to make the circulation of hydrogen and heat exchange water continuous and interrupted. At the same time, the power valve (automatic) is also used as the main automatic control means, and its control is more accurate. The present invention is provided with multiple temperature sensors, and the setting of multiple temperature sensors can effectively detect the heating temperature of the hot water by the heater, so as to adjust the heating temperature of the hot water according to the rate requirement of hydrogen release by the hydrogen storage module 1100. When a single hydrogen storage module 1100 needs to be replaced or repaired, the single hydrogen storage module 1100 can be replaced or repaired by closing the ball valves on both sides of the single hydrogen storage module 1100. The operation is simple and convenient, and the overall structure is simple and easy to implement.

[0093] In the second heating method of the heating module, the hydrogen stored in the hydrogen storage module is used to release hydrogen to the hydrogen release module. The hydrogen storage module 1100 needs to absorb heat to ensure the increase of the hydrogen release rate. The water in the heat exchange medium storage tank flows through the power valve (automatically) to the heat exchanger (the present invention sets a heat exchanger in the second heating method, and the heat is provided by the heat exchanger in an indirect heating mode). The external heat exchange medium containing heat flows through the heat exchanger to exchange heat with the hot water in the heat exchanger, so that the temperature of the hot water is increased. In this method, the fifth temperature sensor T5 (disposed at the front end of the heat exchanger) detects the water inlet temperature at the front end of the heat exchanger, the second temperature sensor T2 detects the water outlet temperature at the rear end of the heat exchanger, and the sixth temperature sensor T6 (disposed at the front end of the heat exchange water inlet of the heat exchanger) detects the temperature of the heat exchange medium entering the heat exchanger. When the fifth temperature sensor T5 detects that the water inlet temperature of the heat exchanger is relatively high, the heat exchanger starts to exchange heat, and the heat exchange medium that meets the sixth temperature sensor T6 flows into the heat exchanger and converts the heat to the hot water inside the heat exchanger. When the second temperature sensor T2 detects that the temperature heated by the heat exchanger has met the temperature that allows the hydrogen storage module 1100 to perform normal heat exchange, the hot water is provided to the hydrogen storage module 1100 via the circulation pump so that the hydrogen storage module 1100 can absorb heat and release hydrogen.

[0094] Taking into account the amount of heat absorbed by the hydrogen storage module 1100 to adjust the hydrogen release rate, the temperature of the hot water entering the hydrogen storage module 1100 is detected by the third temperature sensor T3, and the hot water with a suitable temperature returns to the heat exchange medium storage tank after heat exchange with the hydrogen storage module 1100.

[0095] The present invention provides a heat exchanger in the second heating method, through which an external heat source can exchange heat with water inside the hydrogen storage and dehydrogenation system without affecting the heat exchange structure of the system itself.

[0096] In the above two heating methods of the present invention (the first is to directly provide heat through a heater, and the second is to provide heat by utilizing external heat energy through a heat exchanger in an indirect heating manner), the two heating methods can be operated independently or in coordination according to actual conditions.

[0097] The hot water for heat exchange described in the above embodiments of the present invention (the above multiple heat exchange modes) can be water or other heat exchange media different from water.

[0098] For common operations of heat exchange modules, please refer to Figure 3c, which demonstrates the joint operation mode of heat exchange or refrigeration: Path 8, during the hydrogen discharge process of the hydrogen storage device, the heater and the heat exchanger are used together for heating, which is a parallel and simultaneous heating method; Path 9, during the hydrogen charging process of the hydrogen storage device through the hydrogen charging interface, the chiller and the heat exchanger are used together for cooling, which is a parallel and simultaneous cooling method.

[0099] For the collaborative operation of heat exchange modules, please refer to Figure 3d , which demonstrates the collaborative operation mode of heat exchange or refrigeration: Path 10, during the dehydrogenation process of the hydrogen storage device, the heater and the heat exchanger collaborate to perform heating. During the collaborative heating process, whether the heater or the heat exchanger intervenes in the heating needs to be determined according to the actual situation; Path 11, during the hydrogen charging process of the hydrogen storage device through the hydrogen charging interface, the chiller and the heat exchanger collaborate to perform cooling. During the collaborative cooling process, whether the chiller or the heat exchanger intervenes in the cooling needs to be determined according to the actual situation.

[0100] When the residual hydrogen in the hydrogen storage module 1100 needs to be discharged, the hydrogen inlet of the hydrogen storage module 1100 is opened and the hydrogen is safely discharged through the exhaust system. In order to better solve the problem of hydrogen leakage in the hydrogen storage and dehydrogenation system, a special tape for the hydrogen interface is used to facilitate daily monitoring of whether the hydrogen interface is loose, which is more conducive to checking the risk of hydrogen leakage. At the same time, the hydrogen storage and dehydrogenation system is also provided with a hydrogen leakage alarm. When the hydrogen concentration reaches the preset leakage value, the hydrogen leakage alarm feedbacks a signal to the control system, and the control system cuts off all power to the exhaust fan, and the exhaust fan forcibly exhausts the leaked hydrogen.

[0101] The control module 1300 is used to control the operation and start and stop of the hydrogen storage and dehydrogenation system, control the charging and dehydrogenation of the hydrogen storage module 1100, the operation and stop of the heating module and the cooling module, control the stop of the hydrogen storage and dehydrogenation system and the start of the strong exhaust fan when hydrogen leaks, and control the dehydrogenation of the hydrogen dehydrogenation module 1200 to the outside.

[0102] The high-efficiency and low-energy consumption solid-state hydrogen storage and dehydrogenation system provided by the present invention has a simple structure, and the component setting position is flexible and has no very strict requirements. The airflow permeability between the various components of the solid-state high-efficiency and low-energy consumption solid-state hydrogen storage and dehydrogenation system is excellent. Whether it is charging the hydrogen storage module 1100 or the hydrogen storage module 1100 is dehydrogenating the hydrogen dehydrogenation module 1200, its hydrogen charging and dehydrogenation functions and the amount of hydrogen charging and dehydrogenation can be effectively controlled. The hydrogen storage and dehydrogenation system provided by the present invention also has a hydrogen concentration alarm, which can monitor the hydrogen concentration in real time within the monitoring range. The hydrogen concentration alarm is used to monitor the hydrogen leakage inside the device in real time. According to the detected leakage concentration, it is possible to identify whether the leakage is generated in the hydrogen storage module 1100 or in the hydrogen dehydrogenation module 1200. While achieving accurate detection, it can accurately identify the leakage point and improve the accuracy and efficiency of the maintenance and repair of the hydrogen leakage part. Specifically, the present invention is provided with an alarm (sensor) for each module. When a certain alarm sounds an alarm, it can be determined that the module corresponding to the alarm has leaked. After the alarm sounds, the control module cuts off the power supply of the equipment. At this time, only the exhaust fan circuit remains turned on, and the exhaust fan starts to exhaust air, thereby dispersing the high-concentration hydrogen and reducing the hydrogen concentration.

[0103] In the present invention, the medium used by the refrigerator to cool the hydrogen storage device when charging hydrogen is preferably a heat exchange medium, and the medium used to heat the hydrogen storage device when discharging hydrogen is water. By using a heat exchange medium, the cooling effect of the hydrogen storage device can be effectively improved during the storage of hydrogen from an external hydrogen source in the hydrogen storage device.

[0104] The present invention has an expansion tank for preventing the heat exchange medium in the refrigerator from expanding and contracting and causing damage to the system itself. The expansion tank is used to store and release the heat exchange medium. The function of the expansion tank is only used when the system uses a heat exchanger as a heat exchange medium. The heat exchanger will cause an increase in volume at a higher ambient temperature. The expansion tank can be used to reduce the pressure increase in the heat exchange pipeline caused by the increase in the volume of the heat exchanger, avoid the hidden danger of rupture of the heat exchange pipeline, and effectively improve the safety and stability of the system. In another embodiment, the cooling module can use water as the heat exchange medium, which can also achieve the effect of cooling the hydrogen storage device. When the system heat exchange medium is water, the expansion tank is not enabled. After the system is equipped with an expansion tank, the system can freely select the heat exchange medium according to the customer's requirements to achieve the function of improving the heat exchange effect.

[0105] In the high-efficiency, low-energy-consumption solid-state hydrogen energy storage system provided by the present invention, there are three ways of filling hydrogen, namely: directly filling with pressure from an external hydrogen source, filling with pressure from a low-pressure external hydrogen source by a booster pump, and filling with a buffer tank based on a booster pump). There is one way of releasing hydrogen.

[0106] In the high-efficiency, low-energy solid-state hydrogen storage and dehydrogenation system provided by the present invention, at least one set of heating modules can be equipped, and the heating modules can be used selectively. As can be seen from the above, the heating methods are different for different types of heating modules selected in the present invention. The heating methods include: direct heating by a heater and indirect heating by a heat exchanger, that is, there are two heating methods during hydrogen release. The cooling module directly cools the hydrogen storage module 1100 during hydrogen absorption by a chiller, or indirectly cools it by a heat exchanger, that is, there are two hydrogen absorption cooling methods. The heating module and the cooling module of the hydrogen storage and dehydrogenation system can be used either or together.

[0107] In order to more intuitively explain in detail the working mode of the high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system, the following modes of the three hydrogen charging methods involved in the present invention are defined as: A, B, and C; the modes of the two cooling methods involved in the present invention are defined as a and b; the mode of a hydrogen dehydrogenation method involved in the present invention is defined as: X; the modes of the two heating methods involved in the present invention are defined as: x and y.

[0108] A. In this system, one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module uses only one set of cooling methods; at the same time, another hydrogen storage unit or multiple hydrogen storage units are discharged, and the heat exchange module uses only one set of heating methods. The combination is:

[0109] 1.AaXx, AbXx, AaXy, AbXy;

[0110] 2.BaXx, BbXx, BaXy, BbXy;

[0111] 3.CaXx, CbXx, CaXy, CbXy;

[0112] B. In this system, one hydrogen storage unit or multiple hydrogen storage units are only charged with hydrogen, and the heat exchange module uses only one set of cooling methods:

[0113] 4.Aa, Ab, Ba, Bb, Ca, Cb;

[0114] C. In this system, one hydrogen storage unit or multiple hydrogen storage units simultaneously only release hydrogen, and the heat exchange module only uses one set of heating methods:

[0115] 5.Xx, Xy;

[0116] D. In this system, one hydrogen storage unit or multiple hydrogen storage units are only charged with hydrogen, and the heat exchange module uses a combination of two cooling methods:

[0117] 6. Aab, Bab, Cab;

[0118] E. In this system, one hydrogen storage unit or multiple hydrogen storage units simultaneously only release hydrogen, and the heat exchange module uses a combination of two groups of heating methods:

[0119] 7.Xxy;

[0120] F. In this system, one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module uses two sets of cooling methods for cooling; at the same time, another hydrogen storage unit or multiple hydrogen storage units are discharged, and the heat exchange module uses only one set of heating methods. The combination is:

[0121] 8.AabXx, AabXy;

[0122] 9.BabXx, BabXy;

[0123] 10. CabXx, CabXy;

[0124] G. In this system, one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module uses a set of cooling methods for cooling; at the same time, another hydrogen storage unit or multiple hydrogen storage units are discharged, and the heat exchange module uses a combination of two sets of heating methods:

[0125] 11.AaXxy, AbXxy;

[0126] 12.BaXxy, BbXxy;

[0127] 13.CaXxy, CbXxy;

[0128] H. In this system, one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module uses two sets of cooling methods for cooling; at the same time, another hydrogen storage unit or multiple hydrogen storage units are discharged with hydrogen, and the heat exchange module uses a combination of two sets of heating methods:

[0129] 14.AabXxy;

[0130] 15.BabXxy;

[0131] 16. CabXxy.

[0132] The hydrogen storage device of the present invention can be provided with two types of heating structures, one is direct heating by a heater, and the other is indirect heating by a heat exchanger. For the above two heating structures, one can be selected and applied in actual application, or a combination can be applied. For example, heating can be performed using a heater alone, heating can be performed using a heat exchanger alone, or heating can be performed using a heater and a heater together.

[0133] In other embodiments, the number of heaters may be one or at least one, and the number of heat exchangers may be one or at least one.

[0134] Similarly, the hydrogen storage device of the present invention can be provided with two types of cooling structures, one is direct cooling by a water chiller, and the other is indirect cooling by a heat exchanger. For the above two cooling structures, one can be selected and applied in actual application, or they can be applied in combination. For example, only a water chiller is used for cooling, only a heat exchanger is used for indirect cooling, or a water chiller and a heat exchanger are used together.

[0135] In other embodiments, the number of chillers may be one or at least one, and the number of heat exchangers may be one or at least one.

[0136] According to the attached Figure 3e As shown, in some embodiments, the present invention can heat the heat exchange medium directly through a heater, or can heat the heat exchange medium through a heat exchanger (when the heat exchanger is set to more than two machines, the heat exchanger can work alone, can work in rotation, or can work in coordination). When the heat exchanger is set to two, it includes a first heat exchanger and a second heat exchanger. The first heat exchanger and the second heat exchanger can have different heat exchange temperatures. The first heat exchanger and the second heat exchanger can heat the heat exchange medium at the same time, and the first heat exchanger and the second heat exchanger can also heat the heat exchange medium separately. By setting heat exchangers with different temperatures, it can be achieved that under different external temperature requirements, the heat exchange medium can be heated by using different heat exchangers to meet the needs of the heat exchange medium for hydrogen storage device to release hydrogen and heat under different working conditions, so as to effectively reduce energy consumption. At the same time, the different heat exchange temperature settings of the first heat exchanger and the second heat exchanger, and the matching heater to heat the heat exchange medium can more accurately and quickly match the heat required by the hydrogen storage device, effectively improving the heat exchange efficiency of the hydrogen storage device.

[0137] According to the attached Figure 3e As shown, in some other embodiments, the present invention can directly cool down the heat exchange medium through a chiller, the first heat exchanger and the second heat exchanger can have different cooling temperatures, the first heat exchanger and the second heat exchanger can cool down the heat exchange medium at the same time, and the first heat exchanger and the second heat exchanger can also cool down the heat exchange medium separately. By setting heat exchangers with different cooling temperatures, it can be achieved that under different external temperature requirements, the heat exchange medium can be cooled and cooled by using different heat exchangers to meet the needs of the heat exchange medium for hydrogen charging and cooling the hydrogen storage device under different working conditions, so as to effectively reduce energy consumption. At the same time, the different cooling temperature settings of the first heat exchanger and the second heat exchanger, and the matching chiller to cool down the heat exchange medium can more accurately and quickly match the cooling capacity required by the hydrogen storage device, and effectively improve the heat exchange efficiency of the hydrogen storage device.

[0138] According to the attached Figure 3fAs shown, in some embodiments, the present invention can realize that one or more hydrogen storage units are charging hydrogen while another one or more hydrogen storage units are discharging hydrogen. When one or more hydrogen storage units are charging hydrogen, the hydrogen charging interface is opened, and the hydrogen discharging interface of the hydrogen storage unit is closed to prohibit hydrogen discharging. The chiller matched with the hydrogen storage unit cools the hydrogen storage unit, wherein the hydrogen charging efficiency of the hydrogen storage unit can be cooled and cooled according to the requirements of the actual hydrogen charging amount, which is specifically manifested by setting the first heat exchanger and the second heat exchanger to have different cooling temperatures, and cooperating with the chiller to cool the heat exchange medium to improve the hydrogen charging efficiency of the hydrogen storage unit; at this time, another one or more hydrogen storage units are discharging hydrogen, and their hydrogen discharging interfaces are opened, and the hydrogen charging of the hydrogen storage unit is stopped. The interface is closed, and heat is provided to the hydrogen storage unit through the heater and / or the first heat exchanger and / or the second heat exchanger to increase the hydrogen release rate of the hydrogen storage unit, wherein the hydrogen release rate of the hydrogen storage unit can be heat exchanged according to the actual hydrogen consumption requirements, specifically by setting the first heat exchanger and the second heat exchanger to have different heat exchange temperatures, and cooperating with the heater to heat the heat exchange medium, a variety of combinations can be formed to generate a variety of optional heat to supply the hydrogen storage unit, and then the heat required by the hydrogen storage unit can be matched more accurately and quickly, effectively improving the heat exchange efficiency of the hydrogen storage unit. At the same time, different heat supply settings can meet the needs of the heat exchange medium for hydrogen storage units to release hydrogen and heat under different working conditions, so as to effectively reduce energy consumption.

[0139] Through the structural design of the heat exchange module, the present invention can have the advantages of simple structure, convenient heat exchange control, and the ability to realize one or more hydrogen storage units to discharge hydrogen while another one or more hydrogen storage units are charging hydrogen. In addition, the functions of multiple groups of hydrogen storage units do not interfere with each other and are easy to control. Compared with all hydrogen storage devices in the prior art that can only store hydrogen or discharge hydrogen at the same time and can only meet the operation of a single function, the function of the present invention is simpler and more flexible. At the same time, during the hydrogen storage process, the hydrogen charging mode can be selected according to the different pressures of the external hydrogen source, that is, the hydrogen storage unit can be charged by pressurization or directly. During the hydrogen discharge process, the system can selectively adjust and control the supply of hydrogen discharge heat according to the actual required heat and the different ambient temperatures, which maximizes the guarantee that the system can effectively reduce energy consumption and improve the efficiency of hydrogen storage and discharge while meeting the functions of hydrogen storage and discharge.

[0140] The beneficial effects of the present invention are summarized as follows:

[0141] 1. A single hydrogen storage device can more accurately and quickly match the heat required by the hydrogen storage device by using a heater and a first heat exchanger and a second heat exchanger with different heat exchange temperatures, thereby effectively improving the heat exchange efficiency of the hydrogen storage device;

[0142] 2. Two or more effects The system has a simple structure and convenient heat exchange control. It can realize that one or more hydrogen storage devices are charging hydrogen while another one or more hydrogen storage devices are discharging hydrogen. The functions of the two groups of hydrogen storage devices do not interfere with each other and are easy to control;

[0143] 3. This high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system is a near-room-temperature, low-pressure solid-state hydrogen storage device. The hydrogen storage device used to store hydrogen in this device has a low hydrogen filling pressure, and the hydrogen storage device also has a low hydrogen discharge pressure when dehydrogenating to the outside, so that the filling pressure of the hydrogen storage bottle that needs to be filled with hydrogen is also low, which is safer and more operable;

[0144] 4. At the same time, in the present high-efficiency and low-energy solid-state hydrogen storage and dehydrogenation system, the structure in which the hydrogen storage device (or hydrogen storage unit) of the hydrogen storage module has the head end air pipe / heat exchange tube connected in parallel or the tail end air pipe / heat exchange tube connected in parallel or the head end and tail end air pipe / heat exchange tube connected in parallel can ensure that the internal pressure of each hydrogen storage device (hydrogen storage unit) in the hydrogen storage module is balanced, and at the same time, after each hydrogen storage device (hydrogen storage unit) has dehydrogenated the hydrogen dehydrogenation module, the percentage of the remaining hydrogen in the single hydrogen storage device (hydrogen storage unit) remains consistent;

[0145] 5. The structure of connecting the hydrogen storage module in series with the heat exchange module for heating and / or cooling the hydrogen storage module can effectively improve the hydrogen storage rate and hydrogen release rate of the hydrogen storage module, and can realize rapid storage of hydrogen supplied by an external hydrogen source, and can also quickly release hydrogen to fill the hydrogen storage bottle. The structure is simple, occupies a small space, is easy to produce, and is convenient and fast to repair and maintain. At the same time, the heat pump system and the hydrogen storage module can also be directly made into an integrated structure, with a high degree of integration;

[0146] 6. The hydrogen discharge component limits the position of the hydrogen storage bottle and locks it during hydrogen filling, ensuring the stability of the hydrogen storage bottle during hydrogen filling. After the hydrogen storage bottle is filled with hydrogen, it can be more conveniently separated from the hydrogen discharge component; this hydrogen discharge module has a simple structure, is easy to operate, and is suitable for modular production.

Claims

1. A high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system for storing and releasing hydrogen, characterized in that: Selectively charging the hydrogen storage module (1100) with hydrogen according to the pressure of the external hydrogen source; The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system comprises a boosting module (1400), and the boosting module (1400) comprises an air compressor (1410) and / or a boosting pump (1420) and / or a buffer tank (1430); When the buffer tank (1430) is provided, when the external hydrogen source has no pressure or the pressure is lower than 1.3 MPa, the buffer tank (1430) is connected to the external hydrogen source, and the air compressor (1410) provides power to the booster pump (1420) to drive the booster pump (1420) to work on the buffer tank (1430), and the hydrogen in the buffer tank (1430) is pressurized by the booster pump (1420), so that the hydrogen in the buffer tank (1430) can charge the hydrogen storage module (1100); When the buffer tank (1430) is not provided, when the external hydrogen source has no pressure or the pressure is lower than 1.3 MPa, when the external hydrogen source charges the hydrogen storage module (1100), the air compressor (1410) provides kinetic energy to the booster pump (1420) to drive the booster pump (1420) to pressurize the hydrogen, and the booster pump (1420) provides the pressurized hydrogen to the hydrogen storage module (1100) for hydrogen charging; When the pressure of the external hydrogen source meets the requirements or is not less than 1.3 MPa, the external hydrogen source directly charges the hydrogen storage module (1100).

2. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 1 is characterized in that: It also includes: a hydrogen storage module (1100), a hydrogen release module (1200), a control module (1300), and a heat exchange module; The hydrogen storage module (1100) is connected to the hydrogen discharge module (1200); the hydrogen storage module (1100) is used to supply and discharge hydrogen to the hydrogen discharge module (1200); the control module (1300) is used to control the hydrogen storage of the hydrogen storage module (1100) and the start and stop of hydrogen discharge of the hydrogen discharge module (1200); the hydrogen storage module (1100), the hydrogen discharge module (1200) and the control module (1300) are all arranged in the high-efficiency and low-energy-consumption solid-state hydrogen storage and dehydrogenation system (1000); the heat exchange module is used to provide heat and cold to the hydrogen storage module (1100); the heat exchange mode of the heat exchange module is diverse and adjustable.

3. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 2 is characterized in that: The hydrogen storage module (1100) includes a plurality of hydrogen storage units, each of which can operate independently, and the independent operation includes only storing hydrogen, only releasing hydrogen, and storing and releasing hydrogen simultaneously; the working mode of the hydrogen storage unit and the heat exchange mode of the heat exchange module are freely combined.

4. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 3 is characterized in that: The working mode of the hydrogen storage unit and the heat exchange mode of the heat exchange module are combined as follows: A. One hydrogen storage unit is charged with hydrogen or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module uses only one set of cooling methods; at the same time, another hydrogen storage unit is discharged with hydrogen or multiple hydrogen storage units are discharged with hydrogen, and the heat exchange module uses only one set of heating methods; B. One hydrogen storage unit or multiple hydrogen storage units are only charged with hydrogen, and the heat exchange module uses only one combination of cooling methods; C. One hydrogen storage unit or multiple hydrogen storage units simultaneously only release hydrogen, and the heat exchange module only uses a combination of one set of heating methods; D. One hydrogen storage unit or multiple hydrogen storage units are only charged with hydrogen, and the heat exchange module uses a combination of two cooling methods; E. One hydrogen storage unit or multiple hydrogen storage units simultaneously only release hydrogen, and the heat exchange module uses a combination of two groups of heating methods; F. One hydrogen storage unit is charged with hydrogen or multiple hydrogen storage units are charged with hydrogen, and the heat exchange module is cooled by two sets of cooling methods; at the same time, another hydrogen storage unit is discharged with hydrogen or multiple hydrogen storage units are discharged with hydrogen, and the heat exchange module only uses a combination of one set of heating methods; G. When one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, the heat exchange module uses one set of cooling methods for cooling; at the same time, when another hydrogen storage unit or multiple hydrogen storage units are discharged with hydrogen, the heat exchange module uses a combination of two sets of heating methods; H. When one hydrogen storage unit or multiple hydrogen storage units are charged with hydrogen, the heat exchange module uses two sets of cooling methods for cooling; at the same time, when another hydrogen storage unit or multiple hydrogen storage units are discharged with hydrogen, the heat exchange module uses a combination of two sets of heating methods.

5. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 3 is characterized in that: The number of hydrogen storage modules is adjustable; in one hydrogen storage module, the number of hydrogen storage units is adjustable; The number of the hydrogen discharge modules is adjustable; in one of the hydrogen discharge modules, the number of the hydrogen charging units is adjustable.

6. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 2 is characterized in that: The heat exchange module includes a heating module and / or a cooling module; The cooling module is a chiller that can directly provide cooling capacity or a heat exchanger that can provide cooling capacity by heat exchange; the heating module is a heater that can directly provide thermal energy or a heat exchanger that can provide thermal energy by heat exchange; The heating module and the cooling module can adjust the temperature individually or in collaboration; In the heating module, the heater and the heat exchanger can work independently for heating, or work together for heating; in the cooling module, the chiller and the heat exchanger can work independently for cooling, or work together for cooling.

7. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 6 is characterized in that: When the cooling module is started alone, an external hydrogen source performs a hydrogen charging operation on the hydrogen storage module (1100); When the heating module is started alone, the hydrogen storage module (1100) performs a hydrogen release operation on the hydrogen release module (1200); When a plurality of hydrogen storage modules (1100) are provided, and some of the hydrogen storage modules (1100) need to be charged with hydrogen, while other parts of the hydrogen storage modules (1100) need to be discharged with hydrogen, the cooling module provides coldness to the hydrogen storage modules (1100) being charged with hydrogen to improve the hydrogen absorption effect of the hydrogen storage modules (1100), and the heating module provides heat to the hydrogen storage modules (1100) being discharged with hydrogen to improve the hydrogen discharge effect of the hydrogen storage modules (1100).

8. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 6 is characterized in that: The cooling module uses water or heat exchange medium as a cold carrier to provide cold energy to the hydrogen storage module; The heating module uses water or a heat exchange medium as a heating carrier to provide heat to the hydrogen storage module; when the heat exchange medium is used as a cold carrier, the cooling module is provided with an expansion tank.

9. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to claim 2 is characterized in that: The hydrogen storage module (1100) has a combination of hydrogen storage and hydrogen release working states of 2, 4, 8, 16, ... 2 n wherein n represents the number of hydrogen storage units; and the combination of the working state of the hydrogen storage module (1100) for storing and releasing hydrogen and the state of maintaining hydrogen in the hydrogen storage unit is 2, 4, 8, 16 ... 2 K types, where K represents the number of hydrogen storage units.

10. The high-efficiency, low-energy-consumption solid-state hydrogen storage and dehydrogenation system according to any one of claims 1 to 9, characterized in that: The metal solid-state hydrogen storage material used in the hydrogen storage module is AB2 type, AB5 type or BCC solid solution material.

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