A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion

Abstract

This invention relates to the field of combined heat and power (CHP) energy system technology, and discloses a high-efficiency CHP system based on hydrogen-oxygen synergistic conversion. The system includes a housing with a water supply module inside, and further comprises: an electrolyzer with its inlet connected to the water supply module; a hydrogen production cabinet electrically connected to the electrolyzer; a solid hydrogen storage tank with its inlet connected to the hydrogen output of the electrolyzer; an oxygen cylinder with its inlet connected to the oxygen output of the electrolyzer; a chiller connected to the solid hydrogen storage tank; a fuel cell with its hydrogen input connected to the solid hydrogen storage tank; and a thermal management module composed of water pipes passing through the electrolyzer and the fuel cell. The housing also includes a control panel and an electrical cabinet for electrical control and connection between the various modules, thereby achieving a four-way energy closed loop of electrolytic hydrogen and oxygen production, hydrogen storage, fuel cell power generation, synergistic electrothermal output, and waste heat recovery.

Description

Technical Field

[0001] This invention relates to the field of combined heat and power (CHP) energy system technology, specifically a high-efficiency CHP system based on hydrogen-oxygen synergistic conversion. Background Technology

[0002] With the world actively promoting energy transition and advocating sustainable development, exploring efficient, clean, and sustainable energy solutions has become an urgent priority. Hydrogen energy, with its numerous significant advantages such as its combustion product being only water, high calorific value, ease of storage, and diverse production methods, has stood out among many new energy sources and become a focal point in the energy sector. Utilizing hydrogen fuel cell systems to convert hydrogen energy into electricity and heat for direct use is one of the most efficient ways to leverage the green and environmentally friendly characteristics of hydrogen energy and obtain energy. Hydrogen fuel cell combined heat and power (CHP) systems can combine hydrogen and oxygen through an electrochemical reaction to produce water, releasing electricity in the process. Simultaneously, the waste heat generated by the reaction can be recovered for domestic or industrial applications, achieving highly efficient cascaded utilization of energy. Its comprehensive energy utilization rate can reach over 90%, far exceeding that of traditional energy systems, and it is gradually becoming a new key development direction in the field of distributed CHP.

[0003] However, existing combined heat and power (CHP) systems face numerous problems in actual operation. On the one hand, most systems struggle to achieve a complete energy loop encompassing electrolysis for hydrogen and oxygen production, hydrogen storage, fuel cell power generation, combined electrothermal output, and waste heat recovery. The lack of effective coordination and integration among these processes leads to significant energy losses during conversion and transmission, resulting in low overall energy efficiency. On the other hand, existing systems often lack proper mechanisms for utilizing the oxygen produced by electrolysis, leading to resource waste. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a highly efficient combined heat and power system based on hydrogen-oxygen synergistic conversion, which has the advantages of enabling closed-loop energy use and maximizing resource utilization, thus solving the problem of resource waste in existing equipment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion, comprising a housing, wherein a water supply module is installed inside the housing, and further comprising:

[0008] An electrolytic cell, the water inlet of which is connected to the water supply module;

[0009] A hydrogen production cabinet is electrically connected to the electrolytic cell;

[0010] A solid hydrogen storage tank, the gas inlet of which is connected to the hydrogen output end of the electrolyzer;

[0011] An oxygen cylinder, the inlet of which is connected to the oxygen outlet of the electrolytic cell;

[0012] The chiller's water supply pipes pass through a solid hydrogen storage tank for cooling;

[0013] The fuel cell has its hydrogen input end connected to the solid hydrogen storage tank.

[0014] The thermal management module consists of water pipes and a heat exchanger. The water pipes pass through the electrolyzer, fuel cell, and solid hydrogen storage tank to convert the thermal energy between the three components and supply the excess thermal energy to the user.

[0015] The enclosure is also equipped with a control panel and an electrical cabinet for electrical control and connection between various modules, thereby realizing a four-in-one energy closed loop of electrolytic hydrogen and oxygen production, hydrogen storage, fuel cell power generation, electrothermal co-output, and waste heat recovery.

[0016] Preferably, a hydrogen leakage device is provided on one side of the solid hydrogen storage tank, the hydrogen leakage device comprising:

[0017] A hydrogen tank is located on one side of the solid hydrogen storage tank;

[0018] A connecting mechanism is provided between the hydrogen tank and the solid hydrogen storage tank. The connecting mechanism includes a connecting pipe and a piston that slides against the inner wall of the connecting pipe. One end of the connecting pipe is connected to the solid hydrogen storage tank, and the other end is fixedly connected to the outer wall of the hydrogen tank. A hydrogen discharge pipe, an external circulation pipe, a water inlet pipe, and an internal circulation pipe are sequentially connected to the connecting pipe. The external circulation pipe is arranged around the outer wall of the solid hydrogen storage tank, and the internal circulation pipe is arranged inside the solid hydrogen storage tank. The other end of the hydrogen discharge pipe is connected to the inside of the hydrogen tank. The water inlet pipe is connected to the thermal management module and the chiller through a water pipe tee. A connecting port is provided on the outer wall of the piston, through which the water inlet pipe is connected to the external circulation pipe or the internal circulation pipe. A first spring is fixedly provided on the side of the piston away from the solid hydrogen storage tank, and the other end of the first spring is fixedly connected to the outer wall of the hydrogen tank.

[0019] It should be noted that when the chiller malfunctions and fails to provide cooling, the temperature inside the solid hydrogen storage tank rises, causing hydrogen to be released. This increases the internal pressure of the solid hydrogen storage tank, allowing the released hydrogen to flow into the connecting pipe. This pushes the piston to slide to one side of the hydrogen tank, separating it from the hydrogen discharge pipe. Simultaneously, the piston seals the external circulation pipe, allowing cold water from the inlet pipe to flow into the internal circulation pipe. This cold water then flows into the internal circulation pipe inside the solid hydrogen storage tank, accelerating the temperature drop inside the tank. At the same time, the released hydrogen is discharged into the hydrogen tank through the hydrogen discharge pipe. As the pressure inside the solid hydrogen storage tank gradually recovers, the first spring returns to its initial state, and the piston slides towards the solid hydrogen storage tank. The connecting port then connects the external circulation pipe and the inlet pipe, allowing cold water to enter the external circulation pipe fixed on the outer wall of the solid hydrogen storage tank to cool the hydrogen inside. At this point, the hydrogen discharge pipe is blocked, reducing hydrogen emission and ensuring the hydrogen content inside the solid hydrogen storage tank.

[0020] When the electrolytic cell produces excessive hydrogen, the hydrogen tank can collect the excess hydrogen to avoid waste. It can also change the position of the piston inside the connecting pipe, thereby altering the water inlet pipe's connection. This accelerates hydrogen storage inside the solid-state hydrogen storage tank and prevents excessive pressure inside the tank, which could damage it. When the chiller malfunctions, the temperature rises, changing the pressure inside the solid-state hydrogen storage tank and altering the connection to the water inlet pipe. This depressurizes the tank and slows down hydrogen release. When hydrogen needs to be heated for release, the water inlet pipe is connected to the outlet of the thermal management module, allowing the hot water from the thermal management module to be transferred to the internal or external circulation pipe, thus accelerating hydrogen release.

[0021] Preferably, an electromagnetic block is fixedly installed at the bottom of the hydrogen tank, one end of a second spring is fixedly connected to the surface of the electromagnetic block, and an armature block is fixedly connected to the other end of the second spring. A control switch is installed on the side wall of the hydrogen tank, and a control rod is fixedly connected to the side of the piston near the hydrogen tank. The control rod is used in conjunction with the control switch.

[0022] It should be noted that when the piston is pushed by the internal pressure of the solid hydrogen storage tank, as the piston moves towards the side of the hydrogen tank, the first spring is compressed. The control rod moves with the piston until it touches the control switch, energizing the electromagnet. The resulting magnetic force attracts the armature block to slide towards the bottom of the hydrogen tank, thus facilitating the storage of hydrogen inside the tank. When the internal pressure of the solid hydrogen storage tank decreases, the first spring returns to its original position, pushing the piston to slide towards the side of the solid hydrogen storage tank. This causes the control rod to move away from the control switch, de-energizing the electromagnet and eliminating the magnetic force. Under the elastic force of the second spring returning to its initial state, the armature block can be pushed towards the opening of the hydrogen tank, thereby accelerating the release of hydrogen from the tank. The elastic force of the second spring also helps to propel the release of hydrogen.

[0023] Preferably, a cooling plate is fixedly mounted on the armature block, with the cooling surface of the cooling plate facing the mouth of the hydrogen tank and the heating surface facing the electromagnetic block. The cooling plate is electrically connected to the control switch, and an exhaust pipe is connected to the hydrogen tank. The exhaust pipe is connected to the inlet pipe of the solid hydrogen storage tank through a three-way connector.

[0024] It should be noted that when the control switch is activated by the control lever, the cooling coil begins to work. At this time, hydrogen gas continuously enters the hydrogen tank and is cooled by the cooling coil. By controlling the connection status of the three-way connector through the control panel, the cold hydrogen gas inside the hydrogen tank can be discharged for user use, or the cold hydrogen gas can be discharged back into the solid hydrogen storage tank through the pipeline to accelerate the cooling of the hydrogen gas inside the solid hydrogen storage tank. The low temperature accelerates the adsorption of hydrogen gas by the hydrogen storage material, improving the hydrogen storage efficiency, thereby maximizing the amount of hydrogen gas stored inside the solid hydrogen storage tank. The heating surface heats the air below the armature block, causing the air to expand and accelerate the rise of the armature block, thus discharging the hydrogen gas out of the hydrogen tank.

[0025] Preferably, a fixed shaft is fixedly installed inside the solid hydrogen storage tank, and multiple hydrogen storage blocks are fixedly installed on the fixed shaft. The inner circulation pipe is located between every two hydrogen storage blocks. Cold water is introduced into the outer circulation pipe to cool the solid hydrogen storage tank and accelerate hydrogen storage. Similarly, injecting hot water can accelerate the release of hydrogen. At the same time, the gas inlet pipe is connected to the output end of the electrolysis cell through a three-way pipe, and the other end of the three-way pipe is connected to the discharge pipe.

[0026] Preferably, the length of the control rod is shorter than the initial length of the first spring.

[0027] Preferably, one end of the internal circulation pipe is connected to the water inlet pipe through a connecting port, and the other end passes through the solid hydrogen storage tank and is connected to the water supply end of the heat module and the chiller through a pipe tee. One end of the external circulation pipe is connected to the water inlet pipe through a connecting port, and the other end is connected to the water supply end of the heat module and the chiller through a pipe tee.

[0028] Preferably, the electrolytic cell is one of AEM electrolysis, PEM electrolysis or ALK electrolysis, and a flow control valve is installed on the oxygen pipeline.

[0029] Preferably, the outer wall of the piston is provided with a sealing ring to ensure the sealing between the piston and the inner wall of the connecting pipe.

[0030] Preferably, the outer wall of the armature block is provided with a sealing ring, which ensures the sealing between the armature block and the inner wall of the hydrogen tank, and reduces the transfer of high-temperature heat from below the armature block to the hydrogen environment above the armature block.

[0031] (III) Beneficial Effects

[0032] Compared with existing technologies, this invention provides a highly efficient cogeneration system based on hydrogen-oxygen synergistic conversion, which has the following beneficial effects:

[0033] 1. This high-efficiency combined heat and power system based on hydrogen-oxygen synergistic conversion forms a closed-loop energy system of "electrolysis for hydrogen and oxygen production – hydrogen storage – power generation – waste heat recovery" by setting up an electrolyzer, a solid hydrogen storage tank, a fuel cell, and a thermal management module. This system achieves hydrogen-oxygen synergistic conversion and full-chain energy utilization. The hydrogen produced by the electrolyzer is stored in the solid hydrogen storage tank and then supplied to the fuel cell for power generation. The oxygen can be directly stored and used, avoiding gas waste. The thermal management module recovers the working heat energy of the electrolyzer and fuel cell and converts it into usable heat energy, reducing energy loss. Through centralized control of the control panel and electrical cabinet, the modules work together to form an energy closed loop, thereby improving energy conversion efficiency and achieving synergistic electrothermal output. This solves the problems of energy dispersion and low utilization rate in traditional energy systems and meets diversified energy needs.

[0034] 2. This high-efficiency cogeneration system based on hydrogen-oxygen synergistic conversion achieves dynamic adaptive control of the pressure and temperature of the hydrogen storage tank by installing a hydrogen venting device with a connecting mechanism, multiple pipelines, and a piston on one side of the solid hydrogen storage tank. When a chiller malfunction causes the temperature and pressure inside the tank to rise, hydrogen pushes the piston to slide, automatically switching the connection between the water inlet pipe and the internal circulation pipe. Cold water is used to accelerate internal cooling, while excess hydrogen is discharged into the hydrogen tank through the hydrogen venting pipe to release pressure. After the pressure recovers, the piston returns to its original position under the action of the first spring, switching to external circulation pipe for cooling and closing the hydrogen venting pipe. This design requires no external power intervention and achieves adaptive adjustment through mechanical structure response, thus preventing damage to the hydrogen storage tank due to overpressure, reducing hydrogen waste, and improving the safety and stability of system operation.

[0035] 3. This efficient thermoelectric co-conversion system based on hydrogen and oxygen co-conversion achieves intelligent auxiliary control of hydrogen storage and release by installing an electromagnetic block and an armature block connected by a second spring at the bottom of the hydrogen tank, in conjunction with a control rod on the piston and a control switch on the side wall. When the pressure in the hydrogen storage tank increases, the control rod triggers the control switch to energize the electromagnetic block, and the magnetic force attracts the armature block to move downward to expand the hydrogen storage space, facilitating efficient hydrogen storage. When the pressure decreases, the control rod disengages from the switch to de-energize the electromagnetic block, and the second spring pushes the armature block upward to compress the space, promoting hydrogen release. This electromagnetic-mechanical co-conversion structure does not require complex sensor control; it automatically triggers actions through pressure changes, achieving the effects of optimizing hydrogen storage capacity, accelerating hydrogen release response speed, and improving the system's hydrogen scheduling flexibility.

[0036] 4. This high-efficiency cogeneration system based on hydrogen-oxygen synergistic conversion achieves dual functions of hydrogen cooling and recycling by installing cooling elements on the armature block and connecting the hydrogen tank and the solid hydrogen storage tank via a tee-shaped discharge pipe. When the control switch is triggered, the cooling elements activate, rapidly cooling the hydrogen entering the hydrogen tank, reducing its reactivity and improving storage safety. The cooled hydrogen can be supplied to users as needed through the tee-shaped discharge pipe or returned to the solid hydrogen storage tank to accelerate internal hydrogen cooling. The low temperature promotes the adsorption of hydrogen storage materials, and the armature block sealing ring reduces heat transfer from the heating surface, ensuring cooling efficiency. This design achieves cascaded cooling and recycling of hydrogen, improving hydrogen storage efficiency, expanding hydrogen application scenarios, and enhancing the system's comprehensive energy utilization capabilities. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the structure of the solid hydrogen storage tank and hydrogen release device of the present invention.

[0039] Figure 3 This is an isometric schematic diagram of the structure of the solid hydrogen storage tank and hydrogen release device used in conjunction with the present invention.

[0040] Figure 4 This is a front cross-sectional view of the structure of the solid hydrogen storage tank and hydrogen release device used in conjunction with the present invention.

[0041] Figure 5 This is an isometric cross-sectional schematic diagram of the structure of the solid hydrogen storage tank and hydrogen release device used in conjunction with the present invention.

[0042] Figure 6 This is an isometric cross-sectional view of the solid hydrogen storage tank section of the present invention, showing the structure of the solid hydrogen storage tank and the hydrogen release device used together.

[0043] Figure 7This is an isometric cross-sectional view of the hydrogen release device in the structure of the solid hydrogen storage tank and hydrogen release device of the present invention.

[0044] Figure 8 This is a schematic diagram of the solid hydrogen storage tank structure of the present invention.

[0045] Figure 9 This is an isometric cross-sectional view of the solid hydrogen storage tank structure of the present invention.

[0046] Figure 10 This is a frontal cross-sectional view of the solid hydrogen storage tank structure of the present invention.

[0047] Figure 11 This is a top cross-sectional view of the solid hydrogen storage tank structure of the present invention.

[0048] Figure 12 This is a schematic diagram of the hydrogen release device of the present invention.

[0049] Figure 13 This is an isometric cross-sectional view of the hydrogen release device structure of the present invention.

[0050] Figure 14 This is a frontal cross-sectional view of the hydrogen release device structure of the present invention.

[0051] Figure 15 This is a schematic diagram of the connecting mechanism structure of the present invention.

[0052] Figure 16 This is an isometric cross-sectional view of the connecting mechanism structure of the present invention.

[0053] Figure 17 This is a frontal cross-sectional view of the connecting mechanism structure of the present invention.

[0054] In the diagram: 100, housing; 110, water supply module; 120, electrolyzer; 130, hydrogen production cabinet; 140, chiller; 150, solid hydrogen storage tank; 151, fixed shaft; 152, hydrogen storage block; 153, air inlet pipe; 154, tee pipe; 160, control panel; 170, electrical cabinet; 180, fuel cell;

[0055] 200. Hydrogen release device; 210. Hydrogen tank; 211. Discharge pipe; 2111. T-joint; 212. Electromagnetic block; 213. Second spring; 214. Armature block; 215. Control switch; 220. Connecting mechanism; 221. Connecting pipe; 222. External circulation pipe; 223. Internal circulation pipe; 224. Water inlet pipe; 225. Hydrogen discharge pipe; 226. Piston; 2261. Connecting port; 227. First spring; 228. Control lever. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] Example 1:

[0061] This embodiment provides a high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion, which has the following technical features.

[0062] Please see Figure 1-17 A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion includes a housing 100, with a water supply module 110 installed inside the housing 100, and also includes:

[0063] Electrolytic cell 120, whose water inlet is connected to water supply module 110;

[0064] The hydrogen production cabinet 130 is electrically connected to the electrolyzer 120;

[0065] The solid hydrogen storage tank 150 has its inlet end connected to the hydrogen outlet end of the electrolyzer 120;

[0066] An oxygen cylinder, the inlet of which is connected to the oxygen outlet of the electrolytic cell 120;

[0067] The chiller 140 has a water supply pipe that passes through the solid hydrogen storage tank 150 and is cooled there;

[0068] The fuel cell 180 has its hydrogen input end connected to a solid hydrogen storage tank (150);

[0069] The thermal management module consists of water pipes and a heat exchanger. The water pipes pass through the electrolysis cell 120, the fuel cell 180, and the solid hydrogen storage tank 150, and are used for the conversion of thermal energy between the three components, and to supply excess thermal energy to the user.

[0070] The enclosure 100 also houses a control panel 160 and an electrical cabinet 170 for electrical control and connection between various modules, thereby realizing a four-in-one energy closed loop of electrolytic hydrogen and oxygen production, hydrogen storage, fuel cell power generation, electrothermal co-output, and waste heat recovery.

[0071] It should be noted that the fuel cell 180 utilizes air from the external environment. The electrical energy and heat generated during the reaction of the fuel cell 180 are supplied to the electrolyzer 120 during the reaction, the solid hydrogen storage tank 150 when releasing hydrogen, and for user use via heat exchange through the thermal management module. The hydrogen obtained from the reaction in the electrolyzer 120 is collected by the solid hydrogen storage tank 150 and stored after being cooled by the chiller 140. At the same time, the heat required for the reaction in the electrolyzer 120 comes from the heat of the fuel cell 180 supplied through heat exchange through the thermal management module. When hydrogen is needed, it is released through heating by the thermal management module and discharged into the fuel cell 180 for use.

[0072] In an optional embodiment, a hydrogen leakage device 200 is provided on one side of the solid hydrogen storage tank 150, the hydrogen leakage device 200 comprising:

[0073] Hydrogen tank 210 is located on one side of solid hydrogen storage tank 150;

[0074] A connecting mechanism 220 is disposed between the hydrogen tank 210 and the solid hydrogen storage tank 150. The connecting mechanism 220 includes a connecting pipe 221 and a piston 226 that slides against the inner wall of the connecting pipe 221. One end of the connecting pipe 221 is connected to the solid hydrogen storage tank 150, and the other end is fixedly connected to the outer wall of the hydrogen tank 210. A hydrogen discharge pipe 225, an external circulation pipe 222, a water inlet pipe 224, and an internal circulation pipe 223 are sequentially connected to the connecting pipe 221. The external circulation pipe 222 is arranged around the outer wall of the solid hydrogen storage tank 150, and the internal circulation pipe 223 is arranged around the outer wall of the solid hydrogen storage tank 150. Inside the solid hydrogen storage tank 150, the other end of the hydrogen discharge pipe 225 is connected to the hydrogen tank 210. The water inlet pipe 224 is connected to the thermal management module and the chiller 140 through a water pipe tee. A connecting port 2261 is provided on the outer wall of the piston 226. The water inlet pipe 224 is connected to the external circulation pipe 222 or the internal circulation pipe 223 through the connecting port 2261. A first spring 227 is fixedly installed on the side of the piston 226 away from the solid hydrogen storage tank 150. The other end of the first spring 227 is fixedly connected to the outer wall of the hydrogen tank 210.

[0075] It should be noted that when the chiller malfunctions and fails to provide cooling, the temperature inside the solid hydrogen storage tank 150 rises, causing hydrogen to be released. This increases the internal pressure of the solid hydrogen storage tank 150, allowing the released hydrogen to flow into the connecting pipe 221. This pushes the piston 226 towards one side of the hydrogen tank 210, separating it from the hydrogen discharge pipe 225. Simultaneously, the piston 226 seals the external circulation pipe 222, allowing cold water from the inlet pipe 224 to flow into the internal circulation pipe 223. This cold water then flows into the internal circulation pipe 223 inside the solid hydrogen storage tank 150, accelerating the cooling process within the solid hydrogen storage tank 150. As the temperature decreases, the released hydrogen gas is discharged into the hydrogen tank 210 through the hydrogen discharge pipe 225. When the pressure inside the solid hydrogen storage tank 150 gradually recovers, the first spring 227 returns to its initial state, and the piston 226 slides towards the solid hydrogen storage tank 150. At this time, the connecting port 2261 connects the external circulation pipe 222 and the water inlet pipe 224, allowing cold water to enter the external circulation pipe 222 fixed on the outer wall of the solid hydrogen storage tank 150 to cool the hydrogen gas inside the solid hydrogen storage tank 150. At this time, the hydrogen discharge pipe 225 is blocked, reducing the emission of hydrogen gas and ensuring the hydrogen content inside the solid hydrogen storage tank 150.

[0076] When the electrolysis cell 120 produces excessive hydrogen, the hydrogen tank 210 can collect the excess hydrogen to avoid waste. It can also change the position of the piston 226 inside the connecting pipe 221, thereby changing the water inlet pipe 224. This accelerates the storage of hydrogen inside the solid hydrogen storage tank 150 and prevents excessive pressure inside the solid hydrogen storage tank 150 from causing damage. When the chiller malfunctions, the temperature rises, changing the pressure inside the solid hydrogen storage tank 150. This changes the connection to the water inlet pipe 224, releasing pressure and slowing the release of hydrogen. When hydrogen needs to be heated and released, the water inlet pipe 224 is connected to the outlet of the thermal management module, allowing the hot water from the thermal management module to be transferred to the internal circulation pipe 223 or the external circulation pipe 222, thus accelerating hydrogen release.

[0077] In an optional embodiment, an electromagnetic block 212 is fixedly installed at the bottom of the hydrogen tank 210, one end of a second spring 213 is fixedly connected to the surface of the electromagnetic block 212, and an armature block 214 is fixedly connected to the other end of the second spring 213. A control switch 215 is installed on the side wall of the hydrogen tank 210, and a control rod 228 is fixedly connected to the side of the piston 226 near the hydrogen tank 210. The control rod 228 is used in conjunction with the control switch 215.

[0078] It should be noted that when the piston 226 is pushed by the internal pressure of the solid hydrogen storage tank 150, as the piston 226 moves towards the hydrogen tank 210, the first spring 227 is compressed. The control rod 228 moves with the piston 226 until it abuts against the control switch 215, energizing the electromagnetic block 212. The generated magnetic force attracts the armature block 214 to slide towards the bottom of the hydrogen tank 210, thus facilitating the storage of hydrogen inside the hydrogen tank 210. When the solid hydrogen storage tank 150... When the internal pressure of 50 decreases, the first spring 227 returns to its original position, pushing the piston 226 to slide towards the side of the solid hydrogen storage tank 150, causing the control rod 228 to move away from the control switch 215, thereby de-energizing the electromagnetic block 212 and eliminating its magnetic force. As a result, under the elastic force of the second spring 213 returning to its initial state, the armature block 214 can be pushed towards the opening of the hydrogen tank 210, thereby accelerating the release of hydrogen inside the hydrogen tank 210, and the elastic force of the second spring 213 can also help to release the hydrogen.

[0079] The control switch 215 can be a self-resetting push button switch or a limit switch. The electromagnetic block 212 is energized only when the control rod 228 is in contact with the control switch 215. Once the control rod 228 is disconnected from the control switch 215, the electromagnetic block 212 is de-energized.

[0080] In an optional embodiment, a cooling chip is fixedly mounted on the armature block 214. The cooling surface of the cooling chip faces the bottle opening of the hydrogen tank 210, and the heating surface faces the electromagnetic block 212. The cooling chip is electrically connected to the control switch 215. A discharge pipe 211 is connected to the hydrogen tank 210. The discharge pipe 211 is connected to the inlet pipe 153 of the solid hydrogen storage tank 150 through a three-way connector 2111.

[0081] It should be noted that when the control switch 215 is activated by the control lever 228, the cooling coil starts to work. At this time, hydrogen gas continuously enters the hydrogen tank 210 and is cooled by the cooling coil. The connection status of the three-way connector 2111 is controlled by the control panel 160, which can discharge the cold hydrogen gas inside the hydrogen tank 210 for user use, or discharge the cold hydrogen gas back into the solid hydrogen storage tank 150 through the pipeline, accelerating the cooling of the hydrogen gas inside the solid hydrogen storage tank 150. The low temperature accelerates the adsorption of hydrogen gas by the hydrogen storage material, improving the hydrogen storage efficiency, thereby maximizing the amount of hydrogen gas stored inside the solid hydrogen storage tank 150. The heating surface can heat the air below the armature block 214, causing the air to expand and accelerate the rise of the armature block 214, discharging the hydrogen gas out of the hydrogen tank 210.

[0082] In an optional embodiment, a fixed shaft 151 is fixedly installed inside the solid hydrogen storage tank 150, and multiple hydrogen storage blocks 152 are fixedly installed on the fixed shaft 151. An internal circulation pipe 223 is installed between every two hydrogen storage blocks 152. Cold water is introduced into the external circulation pipe 222 to cool the solid hydrogen storage tank 150 and accelerate hydrogen storage. Similarly, hot water can be injected to accelerate the release of hydrogen. At the same time, the inlet pipe 153 is connected to the output end of the electrolysis cell 120 through a three-way pipe 154, and the other end of the three-way pipe 154 is connected to the outlet pipe 211.

[0083] In an alternative embodiment, the length of the control lever 228 is shorter than the initial length of the first spring 227.

[0084] In an optional embodiment, one end of the inner circulation pipe 223 is connected to the water inlet pipe 224 through the connecting port 2261, and the other end passes through the solid hydrogen storage tank 150 and is connected to the water supply end of the heat module management and the chiller 140 through a pipe tee. One end of the outer circulation pipe 222 is connected to the water inlet pipe 224 through the connecting port 2261, and the other end is connected to the water supply end of the heat module management and the chiller 140 through a pipe tee.

[0085] In an optional embodiment, the electrolytic cell 120 is one of AEM electrolysis, PEM electrolysis or ALK electrolysis, and a flow control valve is provided on the oxygen pipeline.

[0086] In an optional embodiment, a sealing ring is provided on the outer wall of the piston 226 to ensure the sealing between the piston 226 and the inner wall of the connecting pipe 221.

[0087] In an optional embodiment, a sealing ring is provided on the outer wall of the armature block 214 to ensure the sealing between the armature block 214 and the inner wall of the hydrogen tank 210, and to reduce the transfer of high-temperature heat from below the armature block 214 to the hydrogen environment above the armature block 214.

[0088] It should be noted that the modules mentioned above refer to the water supply module 110, electrolysis cell 120, hydrogen production cabinet 130, chiller 140, solid hydrogen storage tank 150, fuel cell 180, three-way pipe 154, and valves used on the three-way connector 2111.

[0089] Working Principle: The system achieves full-module collaborative control through the control panel 160 and electrical cabinet 170, constructing an energy closed loop for hydrogen-oxygen co-conversion. The water supply module 110 supplies water to the electrolyzer 120. Driven by the hydrogen production cabinet 130, the electrolyzer 120 electrolyzes to produce hydrogen and oxygen. The oxygen is partially stored in an oxygen cylinder for user use; the hydrogen is input into the solid hydrogen storage tank 150 for storage. The solid hydrogen storage tank 150 receives cold / hot water from the chiller 140 or the thermal management module through the external circulation pipe 222 for temperature regulation, and works with the internal hydrogen storage block 152 to complete efficient hydrogen storage. When power generation is required, the hydrogen in the solid hydrogen storage tank 150 is transported to the fuel cell 180 through the thermal management module to react with oxygen to generate electricity. The thermal management module simultaneously recovers the working heat energy of the electrolyzer 120 and the fuel cell 180 and converts it into usable heat energy, realizing thermo-electric co-output.

[0090] Meanwhile, the system has multiple safety and efficiency protection mechanisms: the solid hydrogen storage tank 150 is equipped with a hydrogen release device 200. When the chiller 140 malfunctions, causing the internal temperature and pressure to rise excessively, the hydrogen pushes the piston 226 in the connecting pipe 221 to slide, causing the water inlet pipe 224 to switch to the internal circulation pipe 223 to accelerate internal cooling. At the same time, excess hydrogen is temporarily stored in the hydrogen tank 210 through the hydrogen discharge pipe 225. The movement of the piston 226 triggers the control rod 228 to activate the electromagnetic block 212 of the hydrogen tank 210, attracting the armature block 214 to move down to expand the hydrogen storage capacity. The cooling plates on the armature block 214 cool the hydrogen. However, it improves storage efficiency and can accelerate adsorption by feeding cold hydrogen back to the solid hydrogen storage tank 150 through the three-way connector 2111. When the pressure inside the solid hydrogen storage tank 150 is restored, the piston 226 is reset under the action of the spring, the water inlet pipe 224 switches back to the external circulation pipe 222 for normal cooling, and the armature block 214 moves upward to assist the hydrogen back after the electromagnetic block 212 is de-energized. In addition, by controlling the water inlet pipe 224 to connect to the hot water end of the thermal management module, hydrogen can be released faster through the internal / external circulation pipe 222, ultimately realizing the four-in-one energy closed loop of electrolysis, hydrogen storage, power generation and waste heat recovery and safe and efficient operation.

[0091] In summary, this high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion forms a closed-loop energy system consisting of an electrolysis cell 120, a solid hydrogen storage tank 150, a fuel cell 180, and a thermal management module. This system achieves hydrogen-oxygen co-conversion and full-chain energy utilization. The hydrogen produced by the electrolysis cell 120 is stored in the solid hydrogen storage tank 150 and then supplied to the fuel cell 180 for power generation. The oxygen can be directly stored and used, avoiding gas waste. The thermal management module recovers the working heat energy of the electrolysis cell 120 and the fuel cell 180 and converts it into usable heat energy, reducing energy loss. Through centralized control of the control panel 160 and the electrical cabinet 170, the modules work together to form an energy closed loop, improving energy conversion efficiency and achieving synergistic electrothermal output. This solves the problems of energy dispersion and low utilization rate in traditional energy systems and meets diversified energy needs.

[0092] This efficient cogeneration system based on hydrogen-oxygen co-conversion achieves dynamic adaptive control of the pressure and temperature of the hydrogen storage tank 150 by installing a hydrogen venting device 200 containing a connecting mechanism 220, multiple pipelines, and a piston 226 on one side of the solid hydrogen storage tank 150. When a chiller 140 malfunctions, causing the temperature and pressure inside the solid hydrogen storage tank 150 to rise, hydrogen pushes the piston 226 to slide, automatically switching the connection between the water inlet pipe 224 and the internal circulation pipe 223, using chilled water to accelerate internal cooling. At the same time, excess hydrogen is discharged into the hydrogen tank 210 through the hydrogen venting pipe 225 to release pressure. After the pressure recovers, the piston 226 resets under the action of the first spring 227, switching to the external circulation pipe 222 for cooling and closing the hydrogen venting pipe 225. This design requires no external power intervention and achieves adaptive adjustment through mechanical structure response, thus preventing damage to the solid hydrogen storage tank 150 due to overpressure, reducing hydrogen waste, and improving the safety and stability of system operation.

[0093] This highly efficient thermoelectric co-conversion system based on hydrogen and oxygen co-conversion achieves intelligent auxiliary control of hydrogen storage and release by installing an electromagnetic block 212 and an armature block 214 connected by a second spring 213 at the bottom of the hydrogen tank 210, in conjunction with a control rod 228 on the piston 226 and a side wall control switch 215. When the pressure in the solid hydrogen storage tank 150 increases, the control rod 228 triggers the control switch 215 to energize the electromagnetic block 212, and the magnetic force attracts the armature block 214 to move downward to expand the hydrogen storage space, facilitating efficient hydrogen storage. When the pressure decreases, the control rod 228 disengages from the switch to de-energize the electromagnetic block 212, and the second spring 213 pushes the armature block 214 upward to compress the space, promoting hydrogen release. This electromagnetic-mechanical co-conversion structure does not require complex sensor control; it automatically triggers actions through pressure changes, achieving the effects of optimizing hydrogen storage capacity, accelerating hydrogen release response speed, and improving the system's hydrogen scheduling flexibility.

[0094] This high-efficiency cogeneration system based on hydrogen-oxygen synergistic conversion achieves dual functions of hydrogen cooling and recycling by installing a cooling element on the armature block 214 and connecting the hydrogen tank 210 and the solid hydrogen storage tank 150 via a three-way connection of the discharge pipe 211. After the control switch 215 is triggered, the cooling element operates to rapidly cool the hydrogen entering the hydrogen tank 210, reducing hydrogen activity and improving storage safety. The cooled hydrogen can be supplied to users as needed through the discharge pipe 211 three-way connection or flowed back to the solid hydrogen storage tank 150 to accelerate the internal cooling of hydrogen. The low temperature promotes the adsorption of hydrogen storage materials, and the sealing ring of the armature block 214 reduces heat transfer from the heating surface, ensuring cooling efficiency. This design achieves cascade cooling and recycling of hydrogen, thereby improving hydrogen storage efficiency, expanding the application scenarios of hydrogen, and enhancing the overall energy utilization capacity of the system.

[0095] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion, comprising a housing (100), wherein a water supply module (110) is provided inside the housing (100), characterized in that, Also includes: An electrolytic cell (120) has its inlet end connected to the water supply module (110); The hydrogen production cabinet (130) is electrically connected to the electrolyzer (120); A solid hydrogen storage tank (150) has its inlet end connected to the hydrogen outlet end of the electrolyzer (120); An oxygen cylinder, the inlet of which is connected to the oxygen outlet of the electrolytic cell (120); A chiller (140) has a water supply pipe that passes through the solid hydrogen storage tank (150) and is used for cooling; A fuel cell (180) has its hydrogen input end connected to the solid hydrogen storage tank (150); The thermal management module consists of water pipes and a heat exchanger. The water pipes pass through an electrolytic cell (120), a fuel cell (180), and a solid hydrogen storage tank (150) to convert the thermal energy between the three components and supply excess thermal energy to the user. The enclosure (100) is also equipped with a control panel (160) and an electrical cabinet (170) for electrical control and connection between the various modules; The solid hydrogen storage tank (150) is provided with a hydrogen release device (200) on one side, and the hydrogen release device (200) includes: A hydrogen tank (210) is disposed on one side of the solid hydrogen storage tank (150); A connecting mechanism (220) is disposed between the hydrogen tank (210) and the solid hydrogen storage tank (150). The connecting mechanism (220) includes a connecting pipe (221) and a piston (226) that slides against the inner wall of the connecting pipe (221). One end of the connecting pipe (221) is connected to the solid hydrogen storage tank (150), and the other end is fixedly connected to the outer wall of the hydrogen tank (210). A hydrogen discharge pipe (225), an external circulation pipe (222), a water inlet pipe (224), and an internal circulation pipe (223) are sequentially connected to the connecting pipe (221). The external circulation pipe (222) is arranged around the outer wall of the solid hydrogen storage tank (150), and the internal circulation pipe (223) is arranged around the outer wall of the solid hydrogen storage tank (150). Inside the solid hydrogen storage tank (150), the other end of the hydrogen discharge pipe (225) is connected to the hydrogen tank (210). The water inlet pipe (224) is connected to the thermal management module and the chiller (140) through a water pipe tee. A connecting port (2261) is provided on the outer wall of the piston (226). The water inlet pipe (224) is connected to the external circulation pipe (222) or the internal circulation pipe (223) through the connecting port (2261). A first spring (227) is fixedly provided on the side of the piston (226) away from the solid hydrogen storage tank (150). The other end of the first spring (227) is fixedly connected to the outer wall of the hydrogen tank (210).

2. The high-efficiency cogeneration system based on hydrogen-oxygen synergistic conversion according to claim 1, characterized in that, An electromagnetic block (212) is fixedly installed at the bottom of the hydrogen tank (210). One end of a second spring (213) is fixedly connected to the surface of the electromagnetic block (212). An armature block (214) is fixedly connected to the other end of the second spring (213). A control switch (215) is installed on the side wall of the hydrogen tank (210). A control rod (228) is fixedly connected to the side of the piston (226) near the hydrogen tank (210). The control rod (228) is used in conjunction with the control switch (215).

3. The high-efficiency cogeneration system based on hydrogen-oxygen synergistic conversion according to claim 2, characterized in that, A cooling plate is fixedly installed on the armature block (214). The cooling surface of the cooling plate is set towards the bottle mouth of the hydrogen tank (210), and the heating surface is set towards the electromagnetic block (212). The cooling plate is electrically connected to the control switch (215). The hydrogen tank (210) is connected to a discharge pipe (211). The discharge pipe (211) is connected to the inlet pipe (153) of the solid hydrogen storage tank (150) through a three-way connector (2111).

4. The high-efficiency cogeneration system based on hydrogen-oxygen synergistic conversion according to claim 3, characterized in that, The solid hydrogen storage tank (150) is fixedly equipped with a fixed shaft (151), and multiple hydrogen storage blocks (152) are fixedly installed on the fixed shaft (151). The internal circulation pipe (223) is located between every two hydrogen storage blocks (152). Cold water is introduced into the external circulation pipe (222) to cool the solid hydrogen storage tank (150) and accelerate hydrogen storage. Similarly, hot water can be injected to accelerate the release of hydrogen. At the same time, the air inlet pipe (153) is connected to the output end of the electrolytic cell (120) through a three-way pipe (154), and the other end of the three-way pipe (154) is connected to the discharge pipe (211).

5. A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion according to claim 3, characterized in that, The length of the control lever (228) is shorter than the length of the first spring (227) in its initial state.

6. A high-efficiency combined heat and power system based on hydrogen-oxygen synergistic conversion according to claim 3, characterized in that, One end of the inner circulation pipe (223) is connected to the water inlet pipe (224) through the connecting port (2261), and the other end passes through the solid hydrogen storage tank (150) and is connected to the water supply end of the heat module management and the chiller (140) through the pipe tee respectively. One end of the outer circulation pipe (222) is connected to the water inlet pipe (224) through the connecting port (2261), and the other end is connected to the water supply end of the heat module management and the chiller (140) through the pipe tee respectively.

7. A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion according to claim 3, characterized in that, The electrolytic cell (120) is one of AEM electrolysis, PEM electrolysis or ALK electrolysis, and a flow control valve is also installed on the oxygen pipeline.

8. A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion according to claim 3, characterized in that, The piston (226) is provided with a sealing ring on its outer wall to ensure the sealing between the piston (226) and the inner wall of the connecting pipe (221).

9. A high-efficiency combined heat and power system based on hydrogen-oxygen co-conversion according to claim 3, characterized in that, The outer wall of the armature block (214) is provided with a sealing ring, which ensures the sealing between the armature block (214) and the inner wall of the hydrogen tank (210), and reduces the transfer of high temperature heat below the armature block (214) to the hydrogen environment above the armature block (214).

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