39 results about "Hydrogen absorption" patented technology

This utility model discloses an integrated high-efficiency heat exchange solid-state hydrogen storage system, relating to the field of solid-state hydrogen storage technology. It includes a hydrogen storage core module, a heat exchange circulation module, and a pressure control module. This integrated high-efficiency heat exchange solid-state hydrogen storage system utilizes a spiral heat exchange tube bundle tightly fitted to the outer wall of the hydrogen storage container, greatly increasing the heat exchange area and significantly improving heat exchange efficiency. This effectively solves the temperature control problem caused by thermal effects during hydrogen absorption and desorption of solid-state hydrogen storage materials. The built-in electric heating element actively provides the heat required for desorption, ensuring the stability and speed of the hydrogen release process. The pressure control module can accurately stabilize the inlet pressure, avoiding the impact of pressure fluctuations on the hydrogen storage material and improving system safety. Simultaneously, the system has high integration and a compact structure, enhancing protection capabilities. Through uniform hydrogen flow and efficient thermal management, it comprehensively improves hydrogen storage density, hydrogen charging and discharging rates, and system operational stability.

The invention discloses a hydrogen storage material variable temperature hydrogen absorption and desorption cycle test method based on a Sieverts constant volume method. In a cycle test of the variable-temperature hydrogen absorption and desorption cycle test method, a single hydrogen absorption and desorption process comprises temperature-dependent hydrogen absorption and temperature-dependent hydrogen desorption of a hydrogen storage material in a closed system, namely, the single hydrogen absorption and desorption process comprises a cooling hydrogen absorption reaction and a heating hydrogen desorption reaction of the hydrogen storage material along with temperature change; the closed system is a constant-volume closed system without hydrogen material exchange with the outside. According to the invention, the hydrogen absorption and desorption cycle test efficiency of the reversible hydrogen storage material can be obviously improved, and the method has the advantages of controllable hydrogen absorption and desorption depth, temperature and hydrogen back pressure, simple process flow, high system adaptability, good controllability, good repeatability and the like. By optimizing and matching the loading capacity of the hydrogen storage material, the intrinsic thermodynamic PCT characteristic, the test temperature and the system volume, the hydrogen storage material can complete rapid hydrogen absorption and desorption circulation under the conditions of controllable hydrogen absorption and desorption depth, temperature and hydrogen back pressure.

The invention discloses a TiFe-based hydrogen storage alloy and a preparation method thereof, and belongs to the field of metal hydrogen storage materials. The general chemical formula of the TiFe-based hydrogen storage alloy is TiaNdbZrcFedNieMnf, and the atomic percent of each element is as follows: 46 to 53 at% of Ti element, 0.1 to 1.5 at% of Nd element, 1 to 6.5 at% of Zr element, 27 to 40 at% of Fe element, 2 to 10 at% of Ni element and 4.5 to 12 at% of Mn element; wherein Ti, Nd and Zr are first metal elements, Fe, Ni and Mn are second metal elements, and the ratio of the total atomic percent of the first metal elements to the total atomic percent of the second metal elements is 1.05-1.20. The TiFe-based hydrogen storage alloy can be activated at room temperature, has proper hydrogen absorption and desorption platform pressure, and keeps high hydrogen storage capacity and high hydrogen absorption and desorption rate at the same time.

This invention relates to a solid-state hydrogen storage tank and its preparation and filling / discharging methods, belonging to the field of hydrogen storage and transportation technology. It solves the technical problem that the low thermal conductivity of granular and powdered hydrogen storage alloys leads to reduced hydrogen absorption and discharging rates, while existing solid-state hydrogen storage tanks with internal heat exchange structures suffer from complex manufacturing processes and high costs. A solid-state hydrogen storage tank includes a valve, a tank body, a metal mesh array, and granular hydrogen storage alloy dispersedly filled within the metal mesh array. The tank body is a cylindrical, straight-sided bottle shape. The valve fits into the bottle opening of the tank body. The metal mesh array is densely filled inside the tank body and tightly adheres to the inner wall of the tank body. The solid-state hydrogen storage tank of this invention constructs a metal mesh array through the combination of single metal mesh tubes, forming a dense and continuous metal mesh heat transfer network with high thermal conductivity. This reduces the high / low temperature levels of the hydrogen storage alloy bed, especially in the core area, and significantly shortens the hydrogen filling time.

The application belongs to the technical field of hydrogen storage and transportation, and discloses a magnesium-based hydrogen storage material hydrogen absorption and release system using air as a heat medium, which comprises a hydrogen storage heat exchange box, at least one hydrogen storage bottle which can be detachably installed in the hydrogen storage heat exchange box, an air circulation heating unit and an air circulation cooling unit; the air circulation heating unit comprises an air duct heater and a first air fan, and forms a heating circulation loop with the hydrogen storage heat exchange box; the air circulation cooling unit comprises an air duct cooler and a second air fan, and sends cooling air into the hydrogen storage heat exchange box. In the hydrogen absorption working condition, the hydrogen storage bottle is heated to a reaction temperature by the heating unit first, and then the cooling unit is switched to reduce the temperature after hydrogen absorption heat is released; in the hydrogen release working condition, only the heating unit is needed to heat to a decomposition temperature. The application significantly improves the hydrogen storage density of the magnesium-based hydrogen storage equipment, and reduces the equipment cost.

This invention relates to a Ti-Fe-Ce-Mn-Zr-Al-Co based hydrogen storage alloy and its preparation method, belonging to the technical field of hydrogen storage alloy materials. It solves at least one of the problems of high activation conditions, long activation cycles, and poor hydrogen absorption / desorption performance in existing TiFe hydrogen storage alloys. This invention provides a Ti-Fe-Ce-Mn-Zr-Al-Co based hydrogen storage alloy, characterized in that: the alloy's specific composition is Ti... 1.05 Ce 0.05 Fe 1.15‑x‑y‑z‑m Mn x Zr y Al z Co m Where x, y, z, and m are atomic ratios, and 0.1≤x≤0.25, 0.05≤y≤0.2, 0.02≤z≤0.1, 0.02≤m≤0.1. The hydrogen storage alloy exhibits excellent activation and hydrogen absorption / desorption properties, with a hydrogen storage capacity ≥1.70 wt.%, a hydrogen absorption plateau pressure ≥0.41 MPa, and a hydrogen desorption plateau pressure ≥0.31 MPa. It can be activated in a single step at 30°C and an initial hydrogen pressure of 3 MPa, making it suitable for widespread application as a solid-state hydrogen storage material in hydrogen fuel cells and other scenarios.

To provide a piezoelectric element that is easy to use, and a liquid dispensing head that includes such piezoelectric element. [Solution] The piezoelectric element is a piezoelectric element in which a lower electrode, a piezoelectric layer made of a perovskite-type composite oxide, and an upper electrode are stacked in the stacking direction, and a first hydrogen absorption layer that absorbs hydrogen is located above or below the lower electrode in the stacking direction. Preferably, the first hydrogen absorption layer is provided between the lower electrode and the piezoelectric layer in the stacking direction.

The invention provides a preparation method of a high-pressure hydrogen isotope gas source based on a hydrogen absorption material, which has the advantages of high safety, simple and reliable high-pressure obtaining mode, controllable and repeatable pressure, high gas utilization rate and less waste. The reversible hydrogen absorption material is placed in a closed container, the volume of an inner cavity of the closed container is larger than that of the reversible hydrogen absorption material, then the reversible hydrogen absorption material placed in the closed container adsorbs hydrogen isotope gas, and when the hydrogen isotope gas is needed, the reversible hydrogen absorption material is desorbed; and the released hydrogen isotope gas generates positive pressure in the fixed volume of the closed container, so that a high-pressure hydrogen isotope gas source is formed.

The invention relates to an AB2 type hydrogen storage alloy and a preparation method and application thereof, the preparation method comprises the following steps: (1) performing first mixing on Cr and Mn according to the proportion of each element to obtain a first mixed metal material, and performing second mixing on Ti and Zr to obtain a second mixed metal material; and (2) carrying out first smelting treatment on the first mixed metal material until the first mixed metal material is partially or completely smelted, then adding the second mixed metal material into the first mixed metal material, carrying out second smelting treatment until the fusible components are completely smelted, and then sequentially carrying out refining treatment and cooling treatment to obtain the flaky alloy. According to the method, secondary feeding and rapid hardening smelting are combined, the AB2 type hydrogen storage alloy which is small in hydrogen absorption and desorption PCT curve slope and still can keep high hydrogen storage capacity after 100 times of hydrogen absorption and desorption circulation is prepared, and the service life of a smelting crucible is prolonged.

This invention relates to the field of hydrogen-powered drone technology, specifically to a liquid hydrogen cylinder for drones with active thermal management and an adaptive heat exchange system. The cylinder includes a cylinder body, a hydrogen storage box, a heating element, a heat exchange element, and a management system. The inner liner of the cylinder body provides a storage environment for liquid hydrogen, while a hydrogen supply channel on the outer shell stably supplies hydrogen to the drone's hydrogen fuel system. The hydrogen storage box within the interlayer is filled with a hydrogen storage alloy, which utilizes the hydrogen absorption and release properties of liquid hydrogen at low temperatures, using the hydrogen within the interlayer as a heat transfer medium to achieve controllable heat transfer. The flow guide and heat exchange element form a heat exchange assembly, utilizing the slipstream generated by the drone's propellers for passive heat exchange. The management system can communicate with the drone's flight control system, predicting hydrogen demand based on flight conditions and controlling the heating element accordingly. This enables controllable switching between heat conduction and insulation states within the interlayer, resolving the core contradiction between storage and vaporization in existing liquid hydrogen cylinders.

A TiFe-based hydrogen storage alloy and a preparation method thereof belong to the field of metal hydrogen storage materials. The chemical general formula of the TiFe-based hydrogen storage alloy is: Ti a Nd b Zr c Fe d Ni e Mn f wherein the atomic percentage of each element satisfies: the atomic percentage of Ti element is 46-53at%, the atomic percentage of Nd element is 0.1-1.5at%, the atomic percentage of Zr element is 1-6.5at%, the atomic percentage of Fe element is 27-40at%, the atomic percentage of Ni element is 2-10at%, and the atomic percentage of Mn element is 4.5-12at%; wherein Ti, Nd and Zr are first metal elements, Fe, Ni and Mn are second metal elements, and the ratio of the total atomic percentage of the first metal elements to the total atomic percentage of the second metal elements is 1.05-1.20. The TiFe-based hydrogen storage alloy can be activated at room temperature, has suitable hydrogen absorption and desorption platform pressure, and simultaneously maintains high hydrogen storage capacity and fast hydrogen absorption and desorption rate.

The invention provides a hydrogen storage alloy filling system capable of stably transferring hydrogen from a hydrogen supply side tank to a hydrogen absorption side tank. A hydrogen storage alloy filling system (1) is provided with: a supply-side medium circuit (2) provided with a hydrogen supply-side tank (21); an absorption-side medium circuit (3) provided with a hydrogen absorption-side tank (31); and a hydrogen transfer path (4) that connects the hydrogen supply-side tank (21) and the hydrogen absorption-side tank (31). The absorption-side medium circuit (3) is provided with a cooler (36) for further cooling the medium. The amount of cooling by the cooler (36) is controlled so that the amount of heating to the hydrogen supply-side tank (21) and the amount of cooling to the hydrogen absorption-side tank (31) become a predetermined ratio.

The application discloses a metal hydride hydrogen storage device and belongs to the technical field of hydrogen energy storage. The device comprises a pressure-resistant tank body, a hydrogen pipe and hydrogen storage alloy powder. A plurality of hub-type fins with radial fan-shaped through holes are fixed in the pressure-resistant tank body. The hydrogen storage alloy powder is supported in layers, the hydrogen flow channel is optimized, and the heat transfer in the bed body is strengthened. A heat exchange tank jacket is arranged outside the pressure-resistant tank body, a plurality of independent fluid channels extending in the axial direction are arranged on the heat exchange tank jacket, and a forced air convection heat exchange air duct is formed. Through the synergistic effect of the internal hub-type fins and the external forced air fluid channels, the hydrogen storage alloy powder pulverization and collapse are effectively inhibited, the stress of the tank body is relieved, the heat transfer and mass transfer efficiency of the device are significantly improved, the hydrogen absorption / release response time is shortened, the overall structure of the system is lightened and simplified, and the manufacturing cost and maintenance complexity are reduced.

The application relates to an AB5 type alloy with high hydrogen storage performance and a preparation method and application thereof. 0.6 Ni 3.45 Mg a Nd b ; wherein a=0.2-0.4, b=0.1-0.2. The preparation method comprises the following steps: (1) ingredients are prepared according to the formula, and then mixed materials are obtained by smelting in a vacuum arc furnace; (2) the mixed materials obtained in the step (1) are absorbed into a water-cooled copper mold by a vacuum suction casting method to obtain a rod-shaped alloy, namely the obtained alloy. The high hydrogen storage performance alloy provided by the application optimizes the alloy performance by adjusting the element ratio and changing the preparation process, significantly improves the effective hydrogen release amount, hydrogen absorption and release kinetics and hydrogen absorption rate, and has the advantages of simple and rapid preparation method, low preparation cost, large-scale production and application.

A hydrogen storage alloy filling system is provided that can stably transfer hydrogen from a hydrogen supply tank to a hydrogen absorption tank. [Solution] A hydrogen storage alloy filling system 1 is provided with a supply-side medium circuit 2 equipped with a hydrogen supply-side tank 21, an absorption-side medium circuit 3 equipped with a hydrogen absorption-side tank 31, and a hydrogen transfer path 4 connecting the hydrogen supply-side tank 21 and the hydrogen absorption-side tank 31. The absorption-side medium circuit 3 is provided with a cooler 36 for further cooling the medium. The cooling amount of the cooler 36 is controlled so that the amount of heating for the hydrogen supply-side tank 21 and the amount of cooling for the hydrogen absorption-side tank 31 are in a predetermined ratio.

The invention discloses a portable normal-temperature low-pressure solid hydrogen storage temperature control device which comprises a normal-temperature low-pressure solid hydrogen storage unit and a heat preservation temperature control unit arranged outside the normal-temperature low-pressure solid hydrogen storage unit in a sleeving mode. The normal-temperature low-pressure solid hydrogen storage unit comprises a hydrogen storage tank, an integrated valve is arranged at the top of the hydrogen storage tank, and a nanocrystallization hydrogen storage material is arranged in the hydrogen storage tank; the nanocrystallization hydrogen storage material is prepared by mixing a Ti-Fe alloy, a V-Ti alloy and a Mn-Cr alloy in an inert atmosphere and carrying out high-energy ball milling. Through optimization of a hydrogen storage material and a system temperature control strategy, unification of high hydrogen absorption amount, normal-temperature stable hydrogen desorption and portability is realized.

The invention provides a metal hydride hydrogen storage reactor based on a tree-shaped structure, and belongs to the technical field of solid hydrogen storage, the metal hydride hydrogen storage reactor comprises a heat exchange fluid pipe and a metal hydride hydrogen storage reactor tank body, the heat exchange fluid pipe is installed on the metal hydride hydrogen storage reactor tank body in a penetrating mode, a hydrogen tree-shaped pipe is mounted in the metal hydride hydrogen storage reactor tank body, a feeding hole is formed in the top of the metal hydride hydrogen storage reactor tank body, and hydrogen storage alloy is filled into the metal hydride hydrogen storage reactor tank body through the feeding hole. By adopting the tree-shaped hydrogen pipe, the hydrogen is uniformly diffused in the space of the hydrogen storage reactor and is in multi-angle contact reaction with the hydrogen storage alloy, the flowing dead zone is reduced, the reaction performance is improved, and the heat exchange efficiency is high; the U-shaped heat exchange tubes are transversely and uniformly distributed in the reactor, so that the heat exchange with the hydrogen absorption and desorption reaction is enhanced, and the heat exchange efficiency and the reaction efficiency of the hydrogen absorption and desorption process in the hydrogen storage reactor are improved.

The application discloses an easily-activated high-capacity TiFe-based hydrogen storage alloy and a preparation method thereof. The chemical composition of the alloy is Ti a Fe b Mn c N d RE e , and the microstructure of the alloy comprises a TiFe main phase and a second phase dispersedly distributed, the distribution density is not less than 1800 / mm2, and the fluctuation of the counting rate of the Mn element in the TiFe phase within a range of 30 microns in length is not more than ±15% of the average value. The alloy is subjected to first hydrogen absorption at 25 DEG C and 5 MPa hydrogen pressure, the hydrogen absorption amount of the alloy within 10000 seconds reaches more than 90% of the maximum hydrogen storage capacity, the maximum hydrogen storage capacity is greater than 1.85wt.%, the hydrogen release platform slope factor F is lower than 0.5, and the alloy can realize rapid hydrogen absorption without high-temperature activation. The alloy is an ideal solid-state hydrogen storage material with high capacity, low platform slope, excellent activation performance and low manufacturing cost, and is suitable for a solid-state hydrogen storage device for scale energy storage.

The invention belongs to the field of hydrogen absorption and desorption performance testing, relates to a data analysis technology, and aims to solve the problem that errors of test results cannot be verified in the prior art, in particular to an integrated test system for hydrogen absorption and desorption performance of a hydride hydrogen storage material. The integrated test platform is in communication connection with a test execution module, a performance analysis module, a test verification module and a database; according to the invention, the hydride hydrogen storage material sample marked as the abnormal object can be diagnosed in a deeper level; by introducing the distribution coefficient and the distribution threshold value, the system can accurately judge whether the abnormal samples have the step-by-step reaction or not, so that blind treatment on all the abnormal samples is avoided; therefore, the subsequent test or calibration work is more targeted; through a hierarchical verification mechanism, equipment calibration is firstly carried out, and then verification is carried out by using a standard sample; according to the method, the possibility of faults of the testing mechanism is effectively eliminated.

The invention relates to a mobile solid hydrogen storage device. The mobile solid hydrogen storage device comprises a vehicle; the mobile solid hydrogen storage device further comprises a fuel cell power generation unit, an air-cooled heat pump unit and a solid hydrogen storage unit which are connected with one another; the fuel cell power generation unit, the air-cooled heat pump unit and the solid hydrogen storage unit are all arranged in the vehicle. In the mobile solid hydrogen storage device provided by the invention, the fuel cell power generation unit provides a power supply for the air cooled heat pump unit, the air cooled heat pump unit provides a cold source and a heat source required in a hydrogen absorption process and a hydrogen desorption process for the solid hydrogen storage unit, and the device provided by the invention can automatically complete the hydrogen absorption process and the hydrogen desorption process of the solid hydrogen storage unit; a cold source and an additional power supply do not need to be arranged at a hydrogen refueling station to complete hydrogen absorption reaction, a heat source and an additional power supply do not need to be arranged at a user side for hydrogen desorption reaction, and the method can be applied to emergency scenes and is not limited by external power grids and meteorological conditions.

The present invention relates to a hydrogen storage alloy containing a composite phase and having a uniform microstructure and excellent hydrogen storage properties, wherein an optimal alloy structure can be formed by adjusting the temperature of a melt with reference to a nickel content-dependent phase diagram. In the case of a hydrogen storage alloy containing a composite phase according to the present invention, additive elements such as tin (Sn), zinc (Zn), neodymium (Nd), yttrium (Y), or gadolinium (Gd) can be added to improve hydrogen absorption and release rates. In addition, according to the present invention, high-quality chip-shaped alloys can be produced through casting and turning processes, and the production of high-quality chip-shaped alloys is expected to enable the efficient production of hydrogen storage alloys suitable for various industrial applications.

The invention discloses a low-temperature hydrogen absorption high-capacity solid solution type magnesium-based hydrogen storage alloy and a preparation method thereof, relates to a magnesium-based hydrogen storage alloy and a preparation method thereof, and aims to solve the problems of slow dynamics and unstable cycle performance of the magnesium-based hydrogen storage alloy. The solid solution type magnesium-based hydrogen storage alloy is an Mg < 100-x > Sc < x > casting alloy. The preparation method comprises the steps that raw materials are weighed according to the atomic ratio, then the raw materials are subjected to vacuum drying and smelting at the smelting temperature of 750-850 DEG C, the raw materials are evenly stirred and then poured into a mold, and as-cast alloy is obtained, the rare earth element Sc is added, the solid dissolving element Sc is added, so that Mg lattice changes are caused, and the stability of MgH2 is destroyed. Meanwhile, the element Sc has higher metallicity than Mg, an ScH2 catalytic phase is preferentially generated, and the hydrogen absorption and desorption dynamic rate is increased. The method is applied to the field of solid hydrogen storage.

The invention relates to a high-capacity and easy-to-activate Ti-Zr-La-Mn-Cr-(VFe) series AB2 type hydrogen storage alloy and a preparation method thereof, and belongs to the technical field of solid hydrogen storage alloy materials. The invention relates to a Ti-Zr-La-Mn-Cr-(VFe) series AB2 type hydrogen storage alloy and a preparation method thereof, solves the problems of high activation condition, long activation period, overhigh hydrogen absorption platform pressure, large batch preparation smelting difficulty, low yield, high raw material cost and the like of the traditional Ti-Mn based hydrogen storage alloy in the prior art, and provides the Ti-Zr-La-Mn-Cr-(VFe) series AB2 type hydrogen storage alloy, the specific composition of the alloy is Ti 1.05-x-y ZrxLayMn2-z-mCrz (VFe) m, x, y, z and m in the formula are atomic ratios, x is greater than or equal to 0.10 and less than or equal to 0.35, and y is greater than or equal to 0.20 and less than or equal to 0.30. X is more than or equal to 0.01 and less than or equal to 0.03, z is more than or equal to 0.40 and less than or equal to 0.90, m is more than or equal to 0.10 and less than or equal to 0.30, preferably, the ratio of x to y to z to m is 0.30: 0.02: 0.7: 0.15, and the hydrogen storage alloy has good activation performance, hydrogen absorption and desorption dynamic performance, cycle stability and hydrogen storage capacity gt; %, and hydrogen absorption and hydrogen desorption platform pressure can be adjusted according to application requirements; under the conditions that the temperature is 20 DEG C and the initial hydrogen pressure is 3 MPa, complete activation can be achieved through one-time hydrogen charging and discharging circulation, the circulation stability is good, and after 200-time hydrogen charging and discharging circulation, the capacity retention rate is S200gt; the hydrogen storage material can be widely applied as a solid hydrogen storage material.

The invention discloses a multilayer temperature control solid hydrogen storage device capable of rapidly releasing hydrogen and a working method, and belongs to the technical field of solid hydrogen storage. The solid hydrogen storage device comprises a solid hydrogen storage module, a heat management system, a sensor system and a controller; the solid hydrogen storage module comprises a first-stage hydrogen storage module and a second-stage hydrogen storage module which are connected with the fuel cell stack through a gas circuit, the thermal management system can be respectively configured as a hydrogen desorption subsystem and a hydrogen absorption subsystem, and the controller controls the heating unit, the refrigeration unit and the multi-way valve according to the temperature of the anti-freezing solution and hydrogen absorption / desorption state information. And performing thermal management on the first-stage hydrogen storage module and the second-stage hydrogen storage module. According to the invention, thermal management can be respectively carried out in two working states of hydrogen absorption and hydrogen desorption without adding a buffer tank, and rapid hydrogen desorption and low-energy-consumption hydrogen charging in a low-temperature state can be realized.

The invention relates to the technical field of hydrogen storage, in particular to a multistage solid hydrogen storage system and method based on photo-thermal regulation and control and temperature difference utilization, and the system comprises a photo-thermal conversion cavity, at least one part of the photo-thermal conversion cavity is a light-transmitting window, the inner surface of the photo-thermal conversion cavity is provided with a solar energy absorption coating, and the solar energy absorption coating is used for receiving and converting solar radiation energy into heat energy; and the first-stage hydrogen storage container is arranged in the photo-thermal conversion cavity so as to directly or indirectly receive heat. According to the system, free solar energy is directly used as a primary heat source in the hydrogen desorption process, and the night low-temperature environment is used as a natural cold source in the hydrogen absorption process, so that the traditional electric heating and mechanical refrigeration modes are fundamentally abandoned, the operation energy consumption is greatly reduced and even eliminated, and the energy consumption is reduced. Meanwhile, the hydrogen desorption and heat absorption process of the system is coupled with solar heating in the daytime, the hydrogen absorption and heat release process is coupled with environment cooling at night, and intelligent switching between natural heating and natural cooling is achieved.

A composition of a TiMn2-based hydrogen storage alloy according to an embodiment of the present invention may be a composition including a component that reduces the relative contents of Ti, Mn, and Mn, wherein the component is at least one of Fe, Al, or Si, and reduces the hysteresis that occurs during hydrogen absorption and release.

The application provides a sealing ring swelling test device, which comprises a sealed container for hydrogen filling, a temperature control system capable of automatically adjusting the temperature of the sealed container, a mass detection system comprising a cantilever beam for suspending a sealing ring to be tested, a volume detection system, and an information processing system, wherein the mass detection system and the volume detection system are respectively connected with the information processing system in signal, the mass detection system can measure the mass of the sealing ring to be tested in the hydrogen absorption swelling process in real time, the volume detection system can measure the volume of the sealing ring to be tested in the hydrogen absorption swelling process in real time, and the information processing system is used for analysis and processing, so that the changes of the mass and the volume of the sealing ring to be tested in the hydrogen absorption swelling process are calculated. The application further provides a sealing ring swelling test method.

This invention discloses a multi-layer temperature-controlled solid-state hydrogen storage device and its operating method for rapid hydrogen release, belonging to the field of solid-state hydrogen storage technology. The solid-state hydrogen storage device includes a solid-state hydrogen storage module, a thermal management system, a sensor system, and a controller. The solid-state hydrogen storage module includes a first-stage hydrogen storage module and a second-stage hydrogen storage module connected to a fuel cell stack via a gas path. The thermal management system can be configured as a hydrogen release subsystem and a hydrogen absorption subsystem. The controller controls the heating unit, cooling unit, and multi-way valve based on the antifreeze temperature and hydrogen absorption / release status information to perform thermal management on the first-stage and second-stage hydrogen storage modules. This invention eliminates the need for a buffer tank, enabling separate thermal management under both hydrogen absorption and release operating conditions, achieving rapid hydrogen release and low-energy hydrogen refilling at low temperatures.

The invention discloses a solid hydrogen storage device, and belongs to the technical field of hydrogen storage devices.The solid hydrogen storage device comprises a main body module and a constant temperature module, the main body module comprises a mounting frame, a hydrogen storage tank is mounted in the mounting frame, a control box is fixedly connected to one side of the mounting frame, and a closing door is hinged to one side of the control box; the constant temperature module comprises an L-shaped plate fixedly connected to the interior of the control box, a continuous circulation assembly is arranged in the L-shaped plate, and heat conduction liquid in a liquid storage box is conveyed from the top end and the bottom end of a heat conduction pipe through the arrangement of the continuous circulation assembly, the heat conduction pipe, a connecting assembly, the liquid storage box, temperature control equipment and a driving assembly; the temperatures of the heat conduction liquid are mutually neutralized when the heat conduction liquid flows in the heat conduction pipe, the hydrogen storage tank can be uniformly cooled or heated, the hydrogen absorption and desorption effects are effectively improved, meanwhile, circulation and continuous conveying of the heat conduction liquid are achieved, and continuous and stable work of the device is guaranteed.

The utility model discloses a solid hydrogen storage device capable of providing an efficient heat exchange environment for a hydrogen storage alloy material, which belongs to the technical field of hydrogen storage and comprises an outer layer tank body, a hydrogen storage tank body and an inner layer alloy storage tank body, two ends of the outer layer tank body are respectively provided with a water outlet and a water inlet, and the water inlet is connected with external heat exchange medium supply equipment; a hydrogen storage tank body and a plurality of inner-layer alloy storage tank bodies are arranged in the outer-layer tank body, and the hydrogen storage tank body is connected with a hydrogen circulation channel; the inner-layer alloy storage tank body is connected with the hydrogen storage tank body through a first hydrogen guide pipe, and a hydrogen storage alloy material is placed in the inner-layer alloy storage tank body. When the device is used, circulating water flow is introduced between the outer-layer tank body and the inner-layer alloy storage tank body, and the temperature is controlled to regulate and control the hydrogen absorption and desorption platform pressure of the hydrogen storage alloy in the inner-layer alloy storage tank body, so that the purpose of efficient heat exchange of hydrogen storage alloy powder in the hydrogen absorption and desorption process is achieved; and the sealing performance and the safety performance are greatly improved.