Hydrogen generation and power generation system based on low-temperature safe solid hydrogen storage material and control method

Abstract

The invention provides a hydrogen generation and power generation system based on a low-temperature safe solid hydrogen storage material and a control method, and relates to the technical field of hydrogen power generation. The hydrogen generation and power generation system based on the low-temperature safe solid hydrogen storage material comprises a clean energy power generation device, an electrolysis device, a solid hydrogen storage device, a temperature control device, a fuel cell power generation device, an energy storage device and a rainwater collection device, the electrolysis device is used for conveying hydrogen generated by electrolyzing water to the solid hydrogen storage device; the temperature control device is used for controlling the solid hydrogen storage device to absorb or convey hydrogen by adjusting the temperature of a heat exchange medium in the solid hydrogen storage device; and the fuel cell power generation device is used for generating electric energy from the hydrogen conveyed by the solid hydrogen storage device through electrochemical reaction. The flexibility of hydrogen power generation facility construction can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen power generation, and in particular to a hydrogen generation and power generation system and a control method based on low-temperature safe solid-state hydrogen storage materials. Background Art

[0002] With the increasing attention paid to renewable energy, hydrogen energy, as a clean and sustainable form of energy, has attracted much attention. Hydrogen power generation not only has the potential to reduce greenhouse gas emissions, but also provides new possibilities for the transformation of energy structure. It is widely used in transportation, power generation, industrial manufacturing and other fields.

[0003] However, the construction of traditional hydrogen power generation facilities has high requirements on the environment, usually requiring a large area of ​​flat land and complete supporting facilities, which makes it difficult to build hydrogen power generation facilities in some remote or environmentally complex areas. Summary of the invention

[0004] The problem solved by the present invention is how to improve the flexibility of construction of hydrogen power generation facilities.

[0005] In order to solve the above problems, the present invention provides a hydrogen generation and power generation system and a control method based on low-temperature safe solid-state hydrogen storage materials.

[0006] In a first aspect, the present invention provides a hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, including a clean energy power generation device, an electrolysis device, a solid-state hydrogen storage device, a temperature control device, a fuel cell power generation device, an energy storage device, and a rainwater collection device;

[0007] The electrolysis device is used to deliver hydrogen generated by electrolyzing water to the solid-state hydrogen storage device, wherein the electric energy for electrolyzing water is the electric energy generated by the clean energy power generation device and / or the electric energy stored by the energy storage device, and the water for electrolyzing water is the liquid water generated by the electrochemical reaction of the fuel cell power generation device and / or the rainwater collected by the rainwater collection device;

[0008] The temperature control device is used to control the solid-state hydrogen storage device to absorb or transport hydrogen by adjusting the temperature of the heat exchange medium in the solid-state hydrogen storage device;

[0009] The fuel cell power generation device is used to generate electrical energy through an electrochemical reaction of the hydrogen delivered by the solid-state hydrogen storage device.

[0010] Optionally, the fuel cell power generation device is also used for:

[0011] Get external load power;

[0012] When the output power of the fuel cell power generation device is greater than the power of the external load, the external load is powered by the fuel cell power generation device;

[0013] When the output power of the fuel cell power generation device is less than or equal to the external load power, the external load is powered by the fuel cell power generation device and the energy storage device.

[0014] Optionally, the electrolysis device is also used for:

[0015] Obtaining the hydrogen reserve in the solid-state hydrogen storage device;

[0016] When the hydrogen reserve is less than or equal to a preset hydrogen reserve threshold, hydrogen is generated by electrolyzing water, and the generated hydrogen is delivered to the solid-state hydrogen storage device;

[0017] When the hydrogen reserve is greater than the hydrogen reserve threshold, the generation of hydrogen by electrolyzing water is stopped.

[0018] Optionally, the electrolysis device is also used for:

[0019] Obtaining the output power of the clean energy power generation device;

[0020] When the output power is greater than a preset power threshold, the clean energy power generation device provides electric energy for water electrolysis;

[0021] When the output power is less than or equal to the electrolysis power threshold, the energy storage device provides electrical energy for electrolyzing water.

[0022] Optionally, the temperature control device includes a water cooling unit, a heating device, a hot liquid storage tank, a cold liquid storage tank, a heat exchanger, a first three-way valve, a second three-way valve, a first water pump and a temperature control module, the first water inlet of the heat exchanger is connected to one end of the first water pump through a pipeline flowing through the solid hydrogen storage device, the first water outlet of the heat exchanger is connected to the first port of the first three-way valve, the second port of the first three-way valve is connected to one end of the hot liquid storage tank, the other end of the hot liquid storage tank is connected to the first port of the second three-way valve, the second port of the second three-way valve is connected to the other end of the first water pump, the third port of the first three-way valve is connected to one end of the cold liquid storage tank, and the other end of the cold liquid storage tank is connected to the third port of the second three-way valve, and the heating device includes a solar water tank and a heater for heating the heat exchange medium in the hot liquid storage tank;

[0023] The temperature control module is used to adjust the temperature of the heat exchange medium by controlling the water cooling unit and the heating device, and control the solid-state hydrogen storage device to absorb or transport hydrogen through the temperature of the heat exchange medium.

[0024] Optionally, the temperature control device also includes an overflow compensation device, which includes an overflow pipe, a first valve, a second valve and a second water pump, one end of the overflow pipe is connected to the hot liquid storage tank, the other end of the overflow pipe is connected to the cold liquid storage tank, the cold liquid storage tank is connected to one end of the first valve, the other end of the first valve is connected to one end of the second water pump, the other end of the second water pump is connected to one end of the second valve, and the other end of the second valve is connected to the hot liquid storage tank.

[0025] Optionally, the clean energy power generation device includes a solar power generation device and / or a wind power generation device:

[0026] The solar power generation device is used to convert solar energy into electrical energy, and transmit the electrical energy converted from solar energy to the electrolysis device and / or the energy storage device;

[0027] The wind power generation device is used to convert wind energy into electrical energy, and transmit the electrical energy converted from the wind energy to the electrolysis device and / or the energy storage device.

[0028] Optionally, the rainwater collection device includes a filtering device, and the filtering device is used to filter the collected rainwater and then transmit it to the electrolysis device.

[0029] Optionally, the fuel cell power generation device is also used for:

[0030] The water generated by the electrochemical reaction of the fuel cell power generation device is cooled, and the cooled water is delivered to the electrolysis device.

[0031] In a second aspect, a control method for a hydrogen generation and power generation system based on a low-temperature safe solid-state hydrogen storage material is provided, based on the hydrogen generation and power generation system based on a low-temperature safe solid-state hydrogen storage material described in the first aspect, and the control method for a hydrogen generation and power generation system based on a low-temperature safe solid-state hydrogen storage material comprises:

[0032] Controlling the electrolysis device to generate hydrogen by electrolyzing water, and delivering the hydrogen to the solid-state hydrogen storage device;

[0033] Controlling the solid-state hydrogen storage device to absorb the hydrogen through a temperature control device;

[0034] When the fuel cell power generation device generates electricity, the temperature control device controls the solid hydrogen storage device to deliver the hydrogen to the fuel cell power generation device, and controls the fuel cell power generation device to generate electrical energy from the hydrogen through an electrochemical reaction.

[0035] The beneficial effects of the hydrogen generation and power generation system and control method based on low-temperature safe solid-state hydrogen storage materials of the present invention are: by providing electric energy for water electrolysis through a clean energy power generation device, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can provide the electric energy required for water electrolysis through its own power generation equipment without an external power supply, reducing the dependence of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials on external supporting power supply facilities, so that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can be flexibly constructed in different environments and regions without being restricted by environmental and regional factors. The temperature control device controls the solid-state hydrogen storage device to absorb or transport hydrogen by adjusting the temperature of the heat exchange medium flowing through the solid-state hydrogen storage device. By accurately controlling the temperature of the heat exchange medium, the safety and stability of the solid-state hydrogen storage device during hydrogen absorption and transportation are guaranteed, and the risk of leakage caused by unstable absorption and release of hydrogen due to improper temperature is avoided. In addition, the hydrogen storage material can better absorb and release hydrogen through accurate temperature control, and the rate of hydrogen absorption and release is increased, so as to achieve more efficient hydrogen storage and transportation. Through the synergistic effect of clean energy power generation devices, temperature control devices, electrolysis devices and solid-state hydrogen storage devices, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can generate hydrogen autonomously without external facilities to provide hydrogen and electricity, which greatly reduces the dependence of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials on supporting facilities, and also reduces the requirements for construction site selection, no longer limited to being close to the hydrogen source and having complete supporting facilities, so that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can be arbitrarily built in different regions, greatly improving the flexibility of construction, whether it is remote areas, complex terrain or environmentally sensitive areas, there is the possibility of building a hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials. In addition, the solid-state hydrogen storage device can effectively store the generated hydrogen, and when the fuel cell power generation device needs to generate electricity, it can provide a continuous and stable supply of hydrogen, ensuring the stability of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, avoiding power generation fluctuations caused by unstable hydrogen supply, and at the same time, a stable hydrogen supply also helps to improve power generation efficiency, so that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can efficiently convert the chemical energy of hydrogen into electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials according to an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of an application scenario of a clean energy power generation device according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the structure of a temperature control device according to an embodiment of the present invention

[0039] Figure 4 The present invention is a flowchart of a control method for a hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials according to an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1-solar power generation device; 2-wind power generation device; 3-temperature control device; 31-hot liquid storage tank; 32-cold liquid storage tank; 33-heat exchanger; 34-water cooling unit; 35-heating equipment; 351-solar water heater; 352-heater; 36-first three-way valve; 37-second three-way valve; 38-first water pump; 39-overflow compensation device; 391-overflow pipe; 392-first valve; 393-second water pump; 394-second valve; 4-electrolysis device; 5-solid hydrogen storage device; 6-fuel cell power generation device. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0043] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0044] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0045] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0046] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0047] In the related technologies, traditional hydrogen power generation facilities have certain requirements for the construction site and supporting facilities. For example, hydrogen power stations usually need to be located in flat and open areas to facilitate the construction of power stations and equipment installation. They also need to have supporting facilities for hydrogen production nearby, such as by-product hydrogen from chemical companies, natural gas reforming hydrogen production plants, and water electrolysis hydrogen production stations, etc. This can ensure a stable supply of hydrogen and reduce transportation costs and risks. However, in some areas with complex environments, such as building hydrogen power stations on isolated islands, due to the complex geographical environment and lack of supporting facilities, both the construction difficulty and construction cost are relatively high.

[0048] In view of the problems existing in the above-mentioned related technologies, this embodiment provides a hydrogen generation and power generation system and a control method based on low-temperature safe solid-state hydrogen storage materials.

[0049] like Figure 1 As shown, an embodiment of the present invention provides a hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, including a clean energy power generation device, an electrolysis device, a solid-state hydrogen storage device, a temperature control device, a fuel cell power generation device, an energy storage device and a rainwater collection device.

[0050] Specifically, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials includes a rainwater collection device for collecting rainwater to provide the required water source for the electrolysis device, so that the electrolysis device can electrolyze water to produce hydrogen without relying on an external water source. The rainwater collection device can be set at a suitable position near the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, for example, it can be installed on the side of a fuel cell power generation device, an energy storage device and / or an electrolysis device, or it can be set in a place where sufficient rainwater can be collected. At the same time, by providing the electrolysis device with the electric energy required for electrolyzing water through a clean energy power generation device, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can be electrolyzed to produce hydrogen without the need for external power supply. The clean energy power generation device can be a convenient power generation device such as a solar power generation device and / or a wind power generation device. According to the environmental characteristics of the construction area of ​​the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, a wave power generation device or a tidal power generation device can also be selected. Through this clean energy device, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can be electrolyzed to produce hydrogen without the need for external power supply, avoiding the hydrogen generation and power generation based on low-temperature safe solid-state hydrogen storage materials. The electrical system's reliance on external power facilities can ensure the stable operation of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials in different regions and environments. For example, it is impossible to build a power station on an isolated island, resulting in no stable external power supply to provide power support for the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials. Therefore, a solar power generation device or a wind power generation device can be installed on or near the temperature control device, electrolysis device and / or fuel cell device. The electricity generated by solar energy and wind energy can ensure the operation of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, thereby improving the adaptability and construction flexibility of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials to different regions and environments.

[0051] It should be noted that in order to ensure the power generation efficiency of the clean energy power generation device, its installation location can be reasonably arranged according to the actual environmental conditions. For example, a solar power generation device can be installed in a place with more sufficient sunlight nearby, and a wind power generation device can be installed in a place where sufficient wind energy can be obtained. In this way, the hydrogen generation power generation system based on low-temperature safe solid-state hydrogen storage materials can obtain a stable and efficient power supply through the clean energy power generation device.

[0052] For example, Figure 2 As shown, the solar power generation device 1 is arranged on the top of the temperature control device 3, and the wind power generation device 2 is arranged on the top of the electrolysis device 4 and the fuel cell power generation device 6 respectively. Similarly, when there is a higher demand for electric energy, the solar power generation device 1 or the wind power generation device 2 can also be arranged on the top of the solid-state hydrogen storage device 5.

[0053] Furthermore, the laying and layout of hydrogen pipelines, water pipelines, heat exchange medium pipelines and cable lines between various devices in the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials need to be pre-designed according to the actual terrain and environmental conditions during construction, so as to ensure that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can better adapt to different usage scenarios and ensure the flexibility of the power generation system construction.

[0054] The electrolysis device is used to transport hydrogen generated by electrolysis of water to the solid-state hydrogen storage device, wherein the electric energy for electrolysis of water is the electric energy generated by the clean energy power generation device and / or the electric energy stored in the energy storage device, and the water for electrolysis of water is the liquid water generated by the electrochemical reaction of the fuel cell power generation device and / or the rainwater collected by the rainwater collection device.

[0055] Specifically, two electrodes (cathode and anode) in the electrolysis device are inserted into water. When hydrogen production is required, direct current is passed through the two electrodes, and the water molecules in the water are ionized under the action of the electric field to produce hydrogen ions (H + ) and hydroxide ions (OH - ), the cathode attracts hydrogen ions, which gain electrons to generate hydrogen (H2), and the anode attracts hydroxide ions, which lose electrons to generate oxygen (O2) and water. The overall reaction formula is: 2H2O→2H2↑+O2↑. Among them, direct current is mainly provided by clean energy power generation devices, and can also be provided by energy storage devices when necessary. The energy storage device can be a lithium battery, vanadium liquid flow battery, solid-state battery, lead-acid battery and other power storage products. The energy storage device is also used to collect and store excess electricity generated by clean energy devices and fuel cell power generation devices.

[0056] The temperature control device is used to control the solid-state hydrogen storage device to absorb or transport hydrogen by adjusting the temperature of the heat exchange medium in the solid-state hydrogen storage device.

[0057] Specifically, when the solid-state hydrogen storage device needs to absorb and store hydrogen delivered by the electrolysis device, the temperature control device controls the temperature of the heat exchange medium flowing through the inner tank of the solid-state hydrogen storage device to be lowered, so that the temperature of the inner tank of the solid-state hydrogen storage device is stabilized at the temperature required for hydrogen charging through the heat exchange medium, so that after the hydrogen storage alloy in the inner tank absorbs hydrogen, the hydrogen storage metal reacts with hydrogen to form metal hydride, that is, the low-temperature hydrogen storage material reacts with hydrogen at low temperature to form metal hydride, thereby realizing solid-state storage of hydrogen and improving the safety of hydrogen storage. When the solid-state hydrogen storage device needs to deliver hydrogen to the fuel cell power generation device, the temperature control device increases the temperature of the heat exchange medium flowing through the inner tank, so that the temperature in the inner tank is increased to a temperature that can make the metal hydride release hydrogen through the heat exchange medium, and at the same time, the relevant cooling equipment needs to be turned off to ensure that the heat exchange medium in the main circuit is heated to the temperature required for hydrogen release, and the released hydrogen is delivered to the fuel cell power generation device through a preset pipeline.

[0058] The fuel cell power generation device is used to generate electrical energy through an electrochemical reaction of the hydrogen delivered by the solid-state hydrogen storage device.

[0059] Specifically, the hydrogen fuel cell device generates electrical energy through the electrochemical reaction of hydrogen transported by a solid-state hydrogen storage device and oxygen in the air. Among them, hydrogen is decomposed into hydrogen ions and electrons by a catalyst at the anode, and the electrons flow to the cathode through an external circuit. The hydrogen ions reach the cathode through the electrolyte membrane, and the oxygen reacts with the hydrogen ions and electrons at the cathode to generate water. The overall reaction is that hydrogen and oxygen generate water and release electrical energy. It should be noted that the electrical energy generated by the electrochemical reaction is mainly used to power external loads, and the excess electrical energy is stored in the energy storage device, while the water generated by the electrochemical reaction flows into the electrolysis device through a preset pipeline to provide a water source for electrolyzed water.

[0060] In this embodiment, by providing electric energy for water electrolysis through a clean energy power generation device, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can provide the electric energy required for water electrolysis through its own power generation equipment in the absence of an external power supply, thereby reducing the dependence of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials on external supporting power supply facilities, so that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can be flexibly constructed in different environments and regions without being restricted by environmental and regional factors. The temperature control device controls the solid-state hydrogen storage device to absorb or transport hydrogen by adjusting the temperature of the heat exchange medium flowing through the solid-state hydrogen storage device. By accurately controlling the temperature of the heat exchange medium, the safety and stability of the solid-state hydrogen storage device during hydrogen absorption and transportation are guaranteed, and the risk of leakage caused by unstable absorption and release of hydrogen due to improper temperature is avoided. In addition, the hydrogen storage material can better absorb and release hydrogen through accurate temperature control, and the rate of hydrogen absorption and release is increased, so as to achieve more efficient hydrogen storage and transportation. Through the synergistic effect of clean energy power generation devices, temperature control devices, electrolysis devices and solid-state hydrogen storage devices, the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can generate hydrogen autonomously without external facilities to provide hydrogen and electricity, which greatly reduces the dependence of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials on supporting facilities, and also reduces the requirements for construction site selection, no longer limited to being close to the hydrogen source and having complete supporting facilities, so that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can be arbitrarily built in different regions, greatly improving the flexibility of construction, whether it is remote areas, complex terrain or environmentally sensitive areas, there is the possibility of building a hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials. In addition, the solid-state hydrogen storage device can effectively store the generated hydrogen, and when the fuel cell power generation device needs to generate electricity, it can provide a continuous and stable supply of hydrogen, ensuring the stability of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, avoiding power generation fluctuations caused by unstable hydrogen supply, and at the same time, a stable hydrogen supply also helps to improve power generation efficiency, so that the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials can efficiently convert the chemical energy of hydrogen into electrical energy.

[0061] Optionally, the fuel cell power generation device is also used for:

[0062] Get external load power;

[0063] When the output power of the fuel cell power generation device is greater than the power of the external load, the external load is powered by the fuel cell power generation device;

[0064] When the output power of the fuel cell power generation device is less than or equal to the external load power, the external load is powered by the fuel cell power generation device and the energy storage device.

[0065] Specifically, the total power of the external load that the fuel cell power generation device needs to provide electric energy to, that is, the external load power, is obtained, and the output power of the fuel cell power generation device is compared with the external load power. When the output power of the fuel cell power generation device is greater than the external load power, it means that the electric energy generated by the fuel cell power generation device can meet the power supply demand of the external load, and the external load can be powered by the fuel cell power generation device alone. The excess electric energy can also be stored in the energy storage device. At this time, the energy storage system is in a charging state. When the output power of the fuel cell power generation device is less than or equal to the external load, it means that the electric energy generated by the fuel cell power generation device is a heavy burden when powering the external load. Therefore, the external load can be powered by the fuel cell power generation device and the energy storage device together. Among them, the fuel cell power generation device and the energy storage are output in parallel, so the fuel cell power generation device and the energy storage device can be used to power the external power at the same time. At this time, the energy storage system is in a discharging state.

[0066] In this optional embodiment, the power generation capacity of the fuel cell power generation device and the power of the external load that needs to be powered are compared, and the power supply status of the fuel cell power generation device and the energy storage device can be accurately controlled, thereby ensuring that the external load that needs to obtain electrical energy can obtain stable electrical energy that can meet the electricity demand through the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, thereby ensuring the stability of power supply of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials.

[0067] Optionally, the electrolysis device is also used for:

[0068] Obtaining the hydrogen reserve in the solid-state hydrogen storage device;

[0069] When the hydrogen reserve is less than or equal to a preset hydrogen reserve threshold, hydrogen is generated by electrolyzing water, and the generated hydrogen is delivered to the solid-state hydrogen storage device;

[0070] When the hydrogen reserve is greater than the hydrogen reserve threshold, the generation of hydrogen by electrolyzing water is stopped.

[0071] Specifically, by monitoring the hydrogen reserves in the solid-state hydrogen storage device, it is determined whether the electrolysis device needs to generate hydrogen by electrolyzing water. When the hydrogen reserves are less than or equal to the pre-set hydrogen reserves threshold, it is determined that the hydrogen reserves in the solid-state hydrogen storage device are low. At this time, the electrolysis device starts to produce hydrogen, that is, to generate hydrogen by electrolyzing water, and the produced hydrogen is delivered to the solid-state hydrogen storage device. At the same time, the solid-state hydrogen storage device is controlled by the temperature control device to absorb the delivered hydrogen, that is, the temperature of the heat exchange medium is reduced by the temperature control device, so that the temperature of the hydrogen storage metal in the inner tank of the solid-state hydrogen storage device is reduced to a temperature that can absorb hydrogen through heat conduction. When the hydrogen reserves are greater than the hydrogen reserves threshold, it means that the hydrogen reserves in the solid-state hydrogen storage device are large. At this time, the electrolysis device determines that it is not necessary to electrolyze water to produce hydrogen to provide hydrogen for the solid-state hydrogen storage device, so the electrolysis of water to produce hydrogen is stopped.

[0072] In this optional embodiment, the hydrogen reserves in the solid-state hydrogen storage device are used to determine whether hydrogen needs to be generated by electrolyzing water, thereby ensuring that the hydrogen reserves in the solid-state hydrogen storage device are sufficient and stable. By monitoring the hydrogen reserves in the solid-state hydrogen storage device and starting to electrolyze water to produce hydrogen when the reserves are insufficient, the shortage of hydrogen in the solid-state hydrogen storage device can be effectively avoided, and the utilization efficiency of clean energy can be improved. In addition, the hydrogen production operation can be avoided when the hydrogen reserves in the solid-state hydrogen storage device reach the upper limit, thereby reducing unnecessary energy consumption and making more reasonable use of energy.

[0073] Optionally, the electrolysis device is also used for:

[0074] Obtaining the output power of the clean energy power generation device;

[0075] When the output power is greater than a preset power threshold, the clean energy power generation device provides electric energy for water electrolysis;

[0076] When the output power is less than or equal to the electrolysis power threshold, the energy storage device provides electrical energy for electrolyzing water.

[0077] Specifically, by detecting the power generation of clean energy, that is, the output power of the clean energy power generation device, it is determined whether the output power can meet the power demand of the electrolysis device when electrolyzing water to produce hydrogen. When the output power is greater than the preset power threshold, it is determined that the power demand of the electrolysis device can be met. At this time, the clean energy power generation device is used to provide power to the electrolysis device, so that the electrolysis device can generate hydrogen by electrolyzing water under the condition of stable power supply, avoiding interruption or reduction of efficiency of the electrolysis process due to power fluctuations, thereby improving the production efficiency of hydrogen. When extreme conditions occur, such as cloudy and windless conditions, the output power of the clean energy power generation device may be less than or equal to the power threshold, which means that the output power cannot meet the power demand of the electrolysis device. If it is still necessary to generate hydrogen by electrolyzing water at this time, the electric energy stored in the energy storage device can be used to power the electrolysis device, thereby ensuring that the electrolysis device can produce the required hydrogen, wherein the electric energy generated by the clean energy power generation device that cannot be used to produce hydrogen can be stored in the energy storage system.

[0078] Optionally, the temperature control device includes a water cooling unit, a heating device, a hot liquid storage tank, a cold liquid storage tank, a heat exchanger, a first three-way valve, a second three-way valve, a first water pump and a temperature control module, the first water inlet of the heat exchanger is connected to one end of the first water pump through a pipeline flowing through the solid hydrogen storage device, the first water outlet of the heat exchanger is connected to the first port of the first three-way valve, the second port of the first three-way valve is connected to one end of the hot liquid storage tank, the other end of the hot liquid storage tank is connected to the first port of the second three-way valve, the second port of the second three-way valve is connected to the other end of the first water pump, the third port of the first three-way valve is connected to one end of the cold liquid storage tank, and the other end of the cold liquid storage tank is connected to the third port of the second three-way valve, and the heating device includes a solar water tank and a heater for heating the heat exchange medium in the hot liquid storage tank;

[0079] The temperature control module is used to adjust the temperature of the heat exchange medium by controlling the water cooling unit and the heating device, and control the solid-state hydrogen storage device to absorb or transport hydrogen through the temperature of the heat exchange medium.

[0080] Specifically, Figure 3As shown, when the solid-state hydrogen storage device 5 needs to absorb hydrogen, it is required to be in a relatively low temperature environment. At this time, the temperature control module comes into play. First, the first port and the third port of the first three-way valve 36 are controlled to be connected, and the second port and the third port of the second three-way valve 37 are controlled to be connected, so that the main circuit of the heat exchange medium flows through the cold liquid storage tank 32, that is, the normal temperature liquid storage tank, and the water cooling unit 34 is controlled to work, and the low-temperature medium begins to circulate therein through the second water inlet and the second water outlet of the heat exchanger 33, and the heat exchange medium flowing through the heat exchanger 33 is cooled, so that the cooled heat exchange medium flows through the interlayer of the inner and outer tanks of the solid-state hydrogen storage device 5 to heat the inner tank through heat conduction, thereby controlling the hydrogen storage alloy in the inner tank to absorb hydrogen.

[0081] Exemplarily, the first water pump 38 extracts the heat exchange medium from the cold liquid storage tank 32 through the second port and the third port connected in the second three-way valve 37, and pumps it to the first water inlet of the heat exchanger 33 after flowing through the solid hydrogen storage device 5. When the heat exchange medium flows through the heat exchanger 33, it exchanges heat with the low-temperature medium pipeline of the water cooling unit 34 flowing through the heat exchanger 33, so that the temperature of the heat exchange medium flowing out of the heat exchanger 33 is reduced. The heat exchange medium with reduced temperature flows out from the first water outlet of the heat exchanger 33 and flows into the first port of the first three-way valve 36, and then flows out from the third port of the first three-way valve 36 and flows into the cold liquid storage tank 32. Finally, the heat exchange medium with reduced temperature is circulated in the main loop through the first water pump 38 and flows through the solid hydrogen storage device 5, thereby controlling the solid hydrogen storage device 5 to absorb hydrogen.

[0082] Furthermore, when the solid-state hydrogen storage device 5 needs to transport hydrogen, it is required to be in a higher temperature environment. At this time, the temperature control module adjusts the working mode. First, the first port and the second port of the first three-way valve 36 are controlled to be connected, and the first port and the second port of the second three-way valve 37 are controlled to be connected, so that the main circuit of the heat exchange medium flows through the hot liquid storage tank 31, and the water cooling unit 34 is turned off at the same time, and the circulation of the low-temperature medium in the heat exchanger 33 is stopped. The heat exchange medium in the hot liquid storage tank 31 is heated by the heater 352, wherein the hot liquid storage tank 31 is heated by the solar water heater 351 in a water bath to prevent the temperature of the heat exchange medium in the hot liquid storage tank 31 from being too low. The water in the solar water heater 351 is heated by the solar water heater, and then the heat exchange medium in the hot liquid storage tank 31 is heated by the water bath heating principle, so that the heat exchange medium in the hot liquid storage tank 31 is kept at a temperature higher than room temperature. For example, when releasing hydrogen, the heat exchange medium needs to be heated from room temperature to about 40°C. By using water bath heating, the temperature of the heat exchange medium in the hot liquid storage tank 31 is higher than room temperature, so that the temperature difference required to heat the heat exchange mechanism during hydrogen release becomes smaller, and because the temperature difference required for heating is small, the energy consumption of the electric heater 352 becomes smaller, which effectively reduces the energy consumption. Through the action of the first water pump 38, the heated heat exchange medium circulates in the main loop and flows through the solid hydrogen storage device 5, thereby controlling the solid hydrogen storage device 5 to output hydrogen, that is, release hydrogen.

[0083] Exemplarily, the hot liquid storage tank 31 is heated by the heating device 35, the first water pump 38 extracts the heated heat exchange medium from the hot liquid storage tank 31, and pumps it to the first water inlet of the heat exchanger 33 after passing through the solid hydrogen storage device 5, and flows out from the first water outlet of the heat exchanger 33, and the outflowing heat exchange medium flows into the hot liquid storage tank 31 through the first port and the second port of the first three-way valve 36, wherein the hot liquid storage tank 31 is heated by the solar water tank 351 in a water bath, so that the heat exchange medium in the hot liquid storage tank 31 is kept at a certain temperature. In the solid hydrogen storage device 5, the temperature of the inner tank is increased by the heat conduction of the heated heat exchange medium flowing through it, thereby controlling the hydrogen storage alloy therein to release hydrogen under the action of high temperature, so that the solid hydrogen storage device 5 outputs the released hydrogen to the fuel cell power generation device 6.

[0084] Optionally, the temperature control device also includes an overflow compensation device, which includes an overflow pipe, a first valve, a second valve and a second water pump, one end of the overflow pipe is connected to the hot liquid storage tank, the other end of the overflow pipe is connected to the cold liquid storage tank, the cold liquid storage tank is connected to one end of the first valve, the other end of the first valve is connected to one end of the second water pump, the other end of the second water pump is connected to one end of the second valve, and the other end of the second valve is connected to the hot liquid storage tank.

[0085] Specifically, Figure 3As shown, in the conventional hydrogen storage process, the time for outputting hydrogen is relatively long, so the main circuit of the heat exchange medium needs to flow through the hot liquid storage tank 31 most of the time, and during the high temperature and long-term circulation of the heat exchange medium, due to evaporation and other losses, the liquid level of the hot liquid storage tank 31 may drop, thereby affecting the heat exchange efficiency of the solid hydrogen storage device 5. By installing a liquid level gauge at a suitable position in the hot liquid storage tank 31, the specific height of the liquid level can be judged by the liquid level gauge. When the liquid level is lower than the set height, the first valve 392 and the second valve 394 are controlled to open, and the second water pump 393 is connected to the liquid replenishment circuit, that is, the cold liquid storage tank 32 and the hot liquid storage tank 31 are connected by the water pump. When the liquid level in the hot liquid storage tank 31 decreases, the heat exchange medium in the cold liquid storage tank 32 can be pumped into the hot liquid storage tank 31 by the second water supply pump, so that the liquid level in the hot liquid storage tank 31 is kept in a stable state. When the liquid level reaches the set position, the first valve 392 and the second valve 394 are closed, and the second water pump 393 is stopped. Similarly, when the liquid level in the cold liquid storage tank 32 is lower than the set height, the heat exchange medium in the hot liquid storage tank 31 can also be extracted and transported to the hot liquid storage tank 31 through the second water pump 393. In this process, the liquid level height in the liquid storage tank currently connected to the main circuit is prioritized.

[0086] Furthermore, during the circulation of the heat exchange medium, overflow may also occur, that is, the heat exchange medium in the liquid storage tank overflows too much, or when the second water pump 393 cannot be turned off, the heat exchange medium may be continuously transported to the hot liquid storage tank 31. At this time, the overflowed heat exchange medium can flow through the hot liquid storage tank 31 and the cold liquid storage tank 32 through the overflow pipe 391 connected to the hot liquid storage tank 31 and the cold liquid storage tank 32 respectively, that is, when the hot liquid storage tank 31 overflows, the overflowed heat exchange medium can flow into the cold liquid storage tank 32 through the overflow pipe 391, and when the cold liquid storage tank 32 overflows, the overflowed heat exchange medium can flow into the hot liquid storage tank 31 through the overflow pipe 391. This effectively avoids the waste of heat exchange medium caused by overflow, and at the same time prevents equipment failure caused by excessively high liquid levels.

[0087] Specifically, the step of adjusting the temperature of the heat exchange medium by the water cooling unit and the heating device, and controlling the solid-state hydrogen storage device to absorb hydrogen or transport hydrogen by the temperature of the heat exchange medium includes:

[0088] Controlling the water cooling unit to reduce the temperature of the heat exchange medium in the solid hydrogen storage device to a first preset temperature, so as to control the solid hydrogen storage device to absorb hydrogen;

[0089] The heating device is controlled to heat the temperature of the heat exchange medium in the solid-state hydrogen storage device to a second preset temperature, so as to control the state of the solid-state hydrogen storage device to transport hydrogen, wherein the second preset temperature is higher than the first preset temperature.

[0090] Specifically, the temperature control module controls the water cooling unit and the heating equipment to adjust the temperature of the heat exchange medium in the hot liquid storage tank and the cold liquid storage tank respectively, and then controls the temperature in the inner tank of the solid-state hydrogen storage device through the heat exchange medium, thereby controlling the solid-state hydrogen storage device to absorb hydrogen or transport hydrogen, wherein the electric energy of the temperature control device is also provided by the clean energy power generation device and / or the energy storage device.

[0091] Exemplarily, when it is necessary to control the solid-state hydrogen storage device to absorb hydrogen, the water cooling unit can be started through the temperature control module, and the temperature of the heat exchange medium flowing through the main circuit of the solid-state hydrogen storage device is reduced to a first preset temperature through the water cooling unit, so that the temperature of the inner tank of the solid-state hydrogen storage device is stabilized at the temperature required for absorbing hydrogen, that is, the temperature at which the hydrogen storage metal absorbs hydrogen, so that the solid-state hydrogen storage device absorbs hydrogen. When it is necessary to control the solid-state hydrogen storage device to transport hydrogen, it is necessary to turn off the water cooling unit so that there is no circulating water in the low-temperature medium pipeline, the main circuit flows through the hot liquid storage tank, and the temperature of the heat exchange medium in the hot liquid storage tank is raised to a second preset temperature through the heating device, and the heated heat exchange medium circulates in the main circuit, so that the hydrogen in the metal hydride in the inner tank is released through the heat conduction of the heat exchange medium flowing through the solid-state hydrogen storage device, and the released hydrogen is output to the fuel cell power generation device. Among them, the heat exchange medium transfers heat through the pipeline connected to the temperature control device and the solid-state hydrogen storage device, that is, the low-temperature or high-temperature heat exchange medium in the temperature control device is connected to the pipeline in the solid-state hydrogen storage device, so that the heat exchange medium flows through the interlayer of the inner and outer tanks of the hydrogen storage unit, thereby controlling the temperature of the inner tank at the required temperature.

[0092] In this optional embodiment, the temperature of the heat exchange medium is precisely controlled through the efficient regulation of the temperature control device, so that the absorption and release rate of hydrogen can be flexibly adjusted according to actual needs, and the dynamic control of hydrogen absorption and release under different needs can be met. Reasonable temperature control can ensure that the solid-state hydrogen storage device operates within a safe temperature range, reducing the safety risks caused by excessively high or low temperatures. Through temperature control of the heat exchange medium, the temperature control device can ensure the normal operation of the solid-state hydrogen storage device regardless of whether it is in a hot or cold environment, so that it can reliably absorb and transport hydrogen under various conditions, thereby enhancing the adaptability of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials to the environment through stable hydrogen control, avoiding the influence of different geographical locations and climatic conditions on the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials, and can be sited and constructed in a wider area, effectively improving the flexibility of the construction of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials.

[0093] Optionally, the clean energy power generation device includes a solar power generation device and / or a wind power generation device:

[0094] The solar power generation device is used to convert solar energy into electrical energy, and transmit the electrical energy converted from solar energy to the electrolysis device and / or the energy storage device;

[0095] The wind power generation device is used to convert wind energy into electrical energy, and transmit the electrical energy converted from the wind energy to the electrolysis device and / or the energy storage device.

[0096] Specifically, clean energy power generation devices may include convenient power generation devices such as solar power generation devices and wind power generation devices. Depending on the construction area and environmental characteristics, they may also include wave power generation devices or tidal power generation devices. In order to ensure the stability of power supply, multiple clean energy power generation devices may be included at the same time. In order to better obtain light, the solar power generation device may be set on the top of the temperature control device, solid-state hydrogen storage device, electrolysis device, fuel cell power generation device and energy storage device. It may also be set in a nearby higher terrain, so that the solar power generation device can obtain long-term and sufficient light. The solar power generation device converts solar energy into electrical energy and transmits the electrical energy to the electrolysis device through a cable connected to the electrolysis device. At the same time, it can also store excess electrical energy in the energy storage device. When the electrolysis device does not need electrical energy, it can also store excess electrical energy in the energy storage device through a cable connected to the energy storage device. Similarly, wind power generation devices can also be set up in higher places such as the top of temperature control devices, solid-state hydrogen storage devices, electrolysis devices, fuel cell power generation devices and energy storage devices, so as to ensure that sufficient wind energy can be obtained, and the electric energy converted from wind energy can be transmitted to the electrolysis device through a cable connected to the electrolysis device. When the electrolysis device is not needed, the electric energy is stored in the energy storage device through a cable connected to the energy storage device.

[0097] In this optional embodiment, solar energy and wind power generation can directly provide electricity for the electrolysis device, and can provide a stable power supply for the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials in areas without complete power grid supporting facilities, without relying on traditional power grids. This allows the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials to be built in remote areas where the power grid is difficult to cover, greatly expanding the site selection range and improving the flexibility of the construction of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials.

[0098] Optionally, the rainwater collection device includes a filtering device, and the filtering device is used to filter the collected rainwater and then transmit it to the electrolysis device.

[0099] Specifically, the rainwater collection device includes a filtering device, through which the collected rainwater is filtered and transported to the electrolysis device. The container for collecting rainwater can be set on the external side of the temperature control device, solid-state hydrogen storage device, electrolysis device, fuel cell power generation device and energy storage device, etc., which are convenient for rainwater collection. The filtering device can also be connected to the surrounding depressions or water sources to absorb water therein for filtering, and the filtered water can be transported to the electrolysis device.

[0100] In this optional embodiment, a rainwater collection device is used to provide a stable water source for the electrolysis device, so that the generation of hydrogen by the electrolysis device is no longer restricted by the water source. Even in the absence of a stable water source, the electrolysis device can continue to operate to ensure the production of hydrogen. This enables the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials to be built in a more diverse environment, thereby improving the adaptability and construction flexibility of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials to different regions.

[0101] Optionally, the fuel cell power generation device is also used for:

[0102] The water generated by the electrochemical reaction of the fuel cell power generation device is cooled, and the cooled water is delivered to the electrolysis device.

[0103] Specifically, the water generated during the electrochemical reaction may include high-temperature water vapor and liquid water. The generated water is cooled and the cooled liquid water is transported to the electrolysis device. This can achieve the recycling of water resources, reduce the demand for new external water sources, improve the utilization efficiency of water resources, reduce the system's dependence on water resources, and improve the adaptability of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials to different external conditions.

[0104] like Figure 4 As shown, a control method for a hydrogen generation and power generation system based on a low-temperature safe solid-state hydrogen storage material provided in an embodiment of the present invention is based on the hydrogen generation and power generation system based on a low-temperature safe solid-state hydrogen storage material as described above. The control method for a hydrogen generation and power generation system based on a low-temperature safe solid-state hydrogen storage material includes:

[0105] S100, controlling the electrolysis device to generate hydrogen by electrolyzing water, and delivering the hydrogen to the solid-state hydrogen storage device.

[0106] Specifically, the electrolysis device is controlled to generate hydrogen by electrolyzing water, and the generated hydrogen is delivered to the solid-state hydrogen storage device, wherein the electric energy used for the electrolysis of water is the electric energy generated by the clean energy power generation device and / or the electric energy stored in the energy storage device, and the water used for the electrolysis of water is rainwater collected from the rainwater collection device and / or liquid water generated by the electrochemical reaction of the liquid battery power generation device.

[0107] S200, controlling the solid-state hydrogen storage device to absorb the hydrogen through a temperature control device.

[0108] Specifically, after being transported to the solid-state hydrogen storage device through a preset pipeline, the temperature of the heat exchange medium in the main circuit needs to be reduced to a first preset temperature through a temperature control device, and the temperature of the inner tank of the solid-state hydrogen storage device is stabilized near the first preset temperature through heat conduction, that is, the temperature of the inner tank is ensured to be stable at a temperature at which the hydrogen storage metal can absorb hydrogen, thereby allowing the hydrogen storage alloy in the inner tank of the solid-state hydrogen storage device to absorb hydrogen.

[0109] S300, when the fuel cell power generation device generates electricity, the temperature control device controls the solid hydrogen storage device to transport the hydrogen to the fuel cell power generation device, and controls the fuel cell power generation device to generate electrical energy through an electrochemical reaction of the hydrogen.

[0110] Specifically, when the fuel cell power generation device is needed to generate electricity, the temperature of the heat exchange medium is first increased to a second preset temperature through the temperature control device, and the temperature in the inner tank is also maintained near the second preset temperature through heat conduction, so that the hydrogen inside the metal hydride is released by heat, and the released hydrogen is transported to the fuel cell power generation device. The fuel cell power generation device generates electrical energy through the electrochemical reaction of hydrogen and oxygen, thereby supplying power to an external load through the generated electrical energy.

[0111] The model reasoning device of this embodiment is used to realize the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials as described above. Its advantages over the prior art are the same as the advantages of the hydrogen generation and power generation system based on low-temperature safe solid-state hydrogen storage materials over the prior art, and will not be repeated here.

[0112] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc. In the present application, the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present invention. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0113] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material, characterized in that: Including clean energy power generation device, electrolysis device, solid hydrogen storage device, temperature control device, fuel cell power generation device, energy storage device and rainwater collection device; The electrolysis device is used to deliver hydrogen generated by electrolyzing water to the solid-state hydrogen storage device, wherein the electric energy for electrolyzing water is the electric energy generated by the clean energy power generation device and / or the electric energy stored by the energy storage device, and the water for electrolyzing water is the liquid water generated by the electrochemical reaction of the fuel cell power generation device and / or the rainwater collected by the rainwater collection device; The temperature control device is used to control the solid-state hydrogen storage device to absorb or transport hydrogen by adjusting the temperature of the heat exchange medium in the solid-state hydrogen storage device; The fuel cell power generation device is used to generate electrical energy through an electrochemical reaction of the hydrogen delivered by the solid-state hydrogen storage device.

2. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The fuel cell power generation device is also used for: Get external load power; When the output power of the fuel cell power generation device is greater than the power of the external load, the external load is powered by the fuel cell power generation device; When the output power of the fuel cell power generation device is less than or equal to the external load power, the external load is powered by the fuel cell power generation device and the energy storage device.

3. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The electrolysis device is also used for: Obtaining the hydrogen reserve in the solid-state hydrogen storage device; When the hydrogen reserve is less than or equal to a preset hydrogen reserve threshold, hydrogen is generated by electrolyzing water, and the generated hydrogen is delivered to the solid-state hydrogen storage device; When the hydrogen reserve is greater than the hydrogen reserve threshold, the generation of hydrogen by electrolyzing water is stopped.

4. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The electrolysis device is also used for: Obtaining the output power of the clean energy power generation device; When the output power is greater than a preset power threshold, the clean energy power generation device provides electric energy for water electrolysis; When the output power is less than or equal to the electrolysis power threshold, the energy storage device provides electrical energy for electrolyzing water.

5. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The temperature control device includes a water cooling unit, a heating device, a hot liquid storage tank, a cold liquid storage tank, a heat exchanger, a first three-way valve, a second three-way valve, a first water pump and a temperature control module, the first water inlet of the heat exchanger is connected to one end of the first water pump through a pipeline flowing through the solid hydrogen storage device, the first water outlet of the heat exchanger is connected to the first port of the first three-way valve, the second port of the first three-way valve is connected to one end of the hot liquid storage tank, the other end of the hot liquid storage tank is connected to the first port of the second three-way valve, the second port of the second three-way valve is connected to the other end of the first water pump, the third port of the first three-way valve is connected to one end of the cold liquid storage tank, and the other end of the cold liquid storage tank is connected to the third port of the second three-way valve, the heating device includes a solar water tank and a heater, which are used to heat the heat exchange medium in the hot liquid storage tank; The temperature control module is used to adjust the temperature of the heat exchange medium by controlling the water cooling unit and the heating device, and control the solid-state hydrogen storage device to absorb or transport hydrogen through the temperature of the heat exchange medium.

6. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 5 is characterized in that: The temperature control device also includes an overflow compensation device, which includes an overflow pipe, a first valve, a second valve and a second water pump, one end of the overflow pipe is connected to the hot liquid storage tank, the other end of the overflow pipe is connected to the cold liquid storage tank, the cold liquid storage tank is connected to one end of the first valve, the other end of the first valve is connected to one end of the second water pump, the other end of the second water pump is connected to one end of the second valve, and the other end of the second valve is connected to the hot liquid storage tank.

7. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The clean energy power generation device includes a solar power generation device and / or a wind power generation device: The solar power generation device is used to convert solar energy into electrical energy, and transmit the electrical energy converted from solar energy to the electrolysis device and / or the energy storage device; The wind power generation device is used to convert wind energy into electrical energy, and transmit the electrical energy converted from the wind energy to the electrolysis device and / or the energy storage device.

8. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The rainwater collection device comprises a filtering device, and the filtering device is used to filter the collected rainwater and then transmit it to the electrolysis device.

9. The hydrogen generation and power generation system based on low temperature safe solid hydrogen storage material according to claim 1 is characterized in that: The fuel cell power generation device is also used for: The water generated by the electrochemical reaction of the fuel cell power generation device is cooled, and the cooled water is delivered to the electrolysis device.

10. A control method for a hydrogen generation and power generation system based on low temperature safe solid hydrogen storage materials, characterized in that: Based on the hydrogen generation and power generation system based on low temperature safe solid hydrogen storage materials according to any one of claims 1 to 9, the control method of the hydrogen generation and power generation system based on low temperature safe solid hydrogen storage materials includes: Controlling the electrolysis device to generate hydrogen by electrolyzing water, and delivering the hydrogen to the solid-state hydrogen storage device; Controlling the solid-state hydrogen storage device to absorb the hydrogen through a temperature control device; When the fuel cell power generation device generates electricity, the temperature control device controls the solid hydrogen storage device to deliver the hydrogen to the fuel cell power generation device, and controls the fuel cell power generation device to generate electrical energy from the hydrogen through an electrochemical reaction.

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