Hydrogen storage device

Abstract

The utility model provides a hydrogen storage device. The hydrogen storage device comprises a hydrogen storage bottle, a sliding assembly, a heating belt and a control module. The hydrogen storage bottle comprises a bottle body and a hydrogen release pipe, and a guide rail is arranged on the outer side wall of the bottle body; the sliding assembly is movably arranged on the guide rail and used for moving in the length direction of the bottle body. The heating belt is arranged outside the bottle body in a surrounding manner, is connected with the sliding assembly and is used for heating the bottle body; the control module is used for controlling the position of the sliding assembly and the temperature of the heating belt. And under the action of the control module, the position of the sliding assembly and the temperature of the heating belt are controlled. Therefore, heat waste of the large-area heating belt in the heating process is avoided, and the power consumption cost of the heating belt is reduced; and hydrogen can be prevented from being condensed or forming solid hydrogen, and the hydrogen storage capacity of the hydrogen storage tank and normal operation of equipment are ensured.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202420444954.0, filed in China on March 7, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of new energy technology, and specifically to a hydrogen storage device. Background Technology

[0004] Against the backdrop of increasingly prominent environmental and energy issues, new energy sources based on new technologies and materials, characterized by environmental friendliness and renewability, are gaining increasing attention worldwide. Hydrogen energy, as a zero-carbon energy form, possesses advantages such as high energy density, high calorific value, wide availability, compressibility, storability, and renewability, and has already distinguished itself in the new energy field, becoming a key development area for many countries. Because hydrogen storage alloys can absorb and release hydrogen under certain temperature and pressure conditions, using them for hydrogen storage offers advantages such as large storage capacity, low energy consumption, low operating pressure, and ease of use. Furthermore, it eliminates the need for bulky steel containers, making storage and transportation convenient and safe. Researchers, based on the characteristics of hydrogen and the special properties of hydrogen storage alloys, have increased the hydrogen storage capacity of hydrogen cylinders by incorporating these alloys. However, problems arise during the hydrogen absorption and release cycle, such as hydrogen condensation or the formation of solid hydrogen, and a reduction in the storage capacity of the hydrogen storage tank, affecting the normal use of the hydrogen storage cylinder. Utility Model Content

[0005] The purpose of this disclosure is to address the technical problems in related technologies by providing a hydrogen storage device. The specific solution is as follows:

[0006] This disclosure provides a hydrogen storage device, comprising: a hydrogen storage cylinder including a cylinder body and a hydrogen release tube, wherein a guide rail is provided on the outer wall of the cylinder body; a sliding assembly movably disposed on the guide rail for moving along the length of the cylinder body; a heating belt surrounding the outside of the cylinder body and connected to the sliding assembly for heating the cylinder body; and a control module disposed on the hydrogen release tube for controlling the position of the sliding assembly and the temperature of the heating belt.

[0007] In some embodiments, the control module includes a microcontroller for collecting information from the hydrogen storage cylinder and controlling the position of the sliding assembly and the temperature of the heating belt.

[0008] In some embodiments, the hydrogen storage cylinder further includes a temperature sensor disposed inside the cylinder body for real-time acquisition of temperature information inside the cylinder body.

[0009] In some embodiments, a plurality of temperature sensors are provided to collect temperature information at different positions in the bottle.

[0010] In some embodiments, the sliding assembly has a first position and a second position on the guide rail, wherein the first position is adjacent to the hydrogen release pipe; and the second position is away from the hydrogen release pipe.

[0011] In some embodiments, the distance between the first position and the second position is the maximum moving distance of the sliding assembly on the guide rail.

[0012] In some embodiments, the sliding assembly comprises a sliding block arranged on the guide rail for sliding on the guide rail.

[0013] In some embodiments, the sliding assembly further comprises a driving motor connected to the sliding block for driving the sliding block to move.

[0014] In some embodiments, the control module further comprises an electromagnetic valve arranged on the hydrogen release pipe for controlling the hydrogen release amount of the hydrogen release pipe.

[0015] In some embodiments, the control module further comprises a flow meter arranged on the hydrogen release pipe for obtaining the hydrogen absorption and release flow of the hydrogen release pipe.

[0016] Compared with the related art, the above scheme of the embodiments of the present disclosure has at least the following beneficial effects:

[0017] Compared with the scheme in which a heating belt is wrapped around the entire bottle, the heating belt in the present scheme realizes more accurate control of the hydrogen release amount and lower power consumption cost by changing the temperature through the controller.

[0018] The hydrogen storage device provided by the present disclosure comprises a guide rail arranged outside the hydrogen storage bottle and a sliding assembly for moving the heating belt on the guide rail, and realizes the position control of the sliding assembly and the temperature control of the heating belt under the action of the control module. Therefore, not only is the heat waste in the heating process of the large-area heating belt avoided, but also the power consumption cost of the heating belt is reduced; and the hydrogen condensation or solid hydrogen formation is also avoided, thereby ensuring the hydrogen storage capacity of the hydrogen storage tank and the normal operation of the equipment.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure. It is apparent that the accompanying drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those of ordinary skill in the art without creative effort based on these drawings. In the drawings:

[0021] Figure 1 is a front structural schematic diagram of a hydrogen storage device according to an exemplary embodiment.

[0022] Figure 2 is a side structural schematic diagram of a hydrogen storage device according to an exemplary embodiment.

[0023] Figure 3 is a structural schematic diagram of a buzzer connected with a single-chip microcomputer according to an exemplary embodiment.

[0024] Reference signs:

[0025] hydrogen storage bottle 100, bottle body 110, guide rail 111, hydrogen release pipe 120;

[0026] sliding assembly 200, sliding block 210, driving motor 220, heating belt 300;

[0027] single-chip microcomputer 410, electromagnetic valve 420, flow meter 430. DETAILED DESCRIPTION

[0028] In order to make the purposes, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present disclosure.

[0029] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two, and other quantifiers are similar.

[0030] It should be understood that, although the terms first, second, third, etc. can be employed in describing the embodiments of the disclosure, these descriptions are not intended to limit the scope of the disclosure. These terms are only used to distinguish between different objects. For example, without departing from the scope of the embodiments of the disclosure, the first can also be referred to as the second, and similarly, the second can also be referred to as the first. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] It should be understood that the term "and / or" used herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship. The singular form "a", "said" and "the" also include the plural form, unless the context clearly indicates otherwise.

[0032] In the description of the disclosure, it should be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] It should also be noted that the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the goods or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such goods or devices. Without more limitation, the element defined by the sentence "including a" does not exclude the existence of other identical elements in the goods or devices including the element.

[0034] In the related art, a high-pressure gaseous hydrogen storage cylinder uses high pressure to compress hydrogen into the hydrogen storage cylinder. After the hydrogen is compressed, the intermolecular distance is reduced, so that the hydrogen is stored in a gaseous form under high pressure. The general hydrogen storage pressure can reach 35-70 MPa or even higher, so that more hydrogen can be stored in a limited space, but the high pressure also has high requirements for the material strength and sealing performance of the hydrogen storage cylinder. Under the condition of low temperature and high pressure, the movement speed of hydrogen molecules will slow down, and the intermolecular distance will decrease, so that the hydrogen can be converted from a gaseous or liquid state to a solid state. The hydrogen can be liquefied when it is cooled to about -253°C, and the liquid hydrogen needs to be stored in a hydrogen storage cylinder with good thermal insulation performance. Under general conditions, when the temperature is reduced to about -259°C, and combined with appropriate high pressure, the hydrogen can be sublimed into a solid state. In order to keep the hydrogen storage alloy in the hydrogen storage cylinder at a suitable preset temperature, it is common to wrap a heating belt outside the hydrogen storage cylinder. The heating belt can only heat one place, and cannot uniformly heat the hydrogen storage cylinder. In addition, the heating belt in the related art has large power consumption, cannot be directionally heated, and needs to be manually controlled. It cannot be automatically turned on and off according to the temperature feedback of the bottle.

[0035] Therefore, in order to meet the uniform heating of the hydrogen storage device, the present disclosure provides a hydrogen storage device, comprising: a hydrogen storage cylinder, comprising a bottle body and a hydrogen release pipe; a guide rail arranged on the outer side wall of the bottle body; a sliding assembly movably arranged on the guide rail and used for moving in the length direction of the bottle body; a heating belt arranged around the outside of the bottle body and connected with the sliding assembly, and used for heating the bottle body; and a control module used for controlling the position of the sliding assembly and the temperature of the heating belt. Compared with the scheme of wrapping the heating belt around the entire bottle body, the heating belt in the present scheme realizes more accurate control of the hydrogen release amount and lower power consumption cost through the controller according to the temperature change.

[0036] The optional embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0037] The present disclosure provides a hydrogen storage device, comprising: a hydrogen storage cylinder 100, a sliding assembly 200, a heating belt 300, and a control module.

[0038] The hydrogen storage cylinder 100 comprises a bottle body 110 and a hydrogen release pipe 120, as shown in Figure 1As shown, the bottle body 110 has a hydrogen storage alloy for storing hydrogen. The hydrogen storage alloy can store hydrogen equivalent to thousands of times the volume of the alloy itself, with the advantages of large hydrogen storage capacity, easy activation, fast hydrogen absorption and desorption reaction speed, low cost and long service life. However, the hydrogen storage bottle 100 using the hydrogen storage alloy has certain requirements for temperature. Therefore, in actual application, the temperature inside the hydrogen storage bottle 100 needs to be monitored, and when the temperature is lower than the preset temperature of the hydrogen storage bottle 100, the heating belt 300 is used to heat the hydrogen storage bottle 100 to ensure that the hydrogen storage bottle 100 maintains at a preset temperature suitable for hydrogen absorption or hydrogen desorption.

[0039] There are many kinds of solid materials for storing hydrogen, usually metals and carbon-based materials, which need to have two characteristics, one is "hydrogen" property, and the other is porous property or more vacancies in molecular structure. These two characteristics help the material "absorb hydrogen" and "desorb hydrogen" smoothly, so as to realize hydrogen storage and release. Between "inhale" and "inhale", there are two technical directions, one is physical adsorption and release, and the other is chemical adsorption and release. Physical adsorption mainly uses the high specific surface area of porous materials to adsorb hydrogen molecules on the surface through van der Waals force. Chemical adsorption is the combination of hydrogen and other elements through ionic bond or covalent bond to generate materials such as metal hydride. These materials usually release hydrogen gas under heating conditions, thus completing the "breathing" process

[0040] In some embodiments, a temperature sensor is arranged inside the bottle body 110 of the hydrogen storage bottle 100 for real-time collection of temperature information inside the bottle body 110 and conversion of the temperature information into a signal for transmission to the control module. The temperature sensor can be provided with multiple temperature sensors for collecting temperature information at different positions inside the bottle body 110 to monitor the temperature at different positions of the bottle body 110. By adjusting the position of the heating belt 300 according to the temperature information fed back from the different positions, the position of the hydrogen bottle with lower temperature can be heated.

[0041] The heating belt 300 is arranged to ensure that the hydrogen gas in the bottle body 110 is at a suitable temperature. Hydrogen gas may form liquid hydrogen or solid hydrogen at low temperature, and the heating belt 300 can maintain the hydrogen gas in gaseous state. This is because many hydrogen storage bottles 300 are used in scenarios that require hydrogen gas to be output in gaseous form, for example: hydrogen fuel cell vehicles, gaseous hydrogen output can ensure the normal operation of the fuel supply system. On the other hand, it is to prevent the pressure in the bottle from dropping too much in some low temperature environments. According to the ideal gas equation, temperature reduction will reduce gas pressure. If the pressure is too low, it will affect the normal delivery and use efficiency of hydrogen gas. The heating belt 300 can maintain the pressure of hydrogen gas in the bottle body 110 stable to ensure that hydrogen gas can be supplied to the gas using equipment at a stable pressure.

[0042] In some embodiments, the hydrogen storage tank 100 with the vacuum layer is mainly to improve the thermal insulation performance. Like the liquid hydrogen storage tank, due to the extremely low temperature of the liquid hydrogen, the vacuum layer can effectively reduce the external heat transfer into the tank, reduce the liquid hydrogen vaporization rate, and keep the low-temperature environment inside the tank relatively stable, preventing the pressure from changing rapidly due to the temperature rise. However, the hydrogen storage tank 100 provided by the present disclosure can also be without a vacuum layer, mainly relying on the strength of the tank body material to withstand the pressure to store hydrogen.

[0043] In some embodiments, the outer side wall of the bottle body 110 is provided with a guide rail 111, which can be configured as a "U-shaped" semi-enclosed structure, surrounding the hydrogen storage tank 100 from the bottom of the bottle body 110 to the hydrogen release pipe 120. The sliding assembly 200 is arranged on the guide rail 111 and is adapted to move on the guide rail 111.

[0044] In some embodiments, the outside of the bottle body 110 can be provided with two guide rails 111, as shown in FIG. 1B. Figure 2 As shown in FIG. 1B, two guide rails 111 are arranged on the outside of the bottle body 110, and the sliding assembly 200 is arranged on the guide rail 111. The parallel arrangement of the two guide rails 111 can ensure the smooth movement of the sliding assembly 200 on the outside of the hydrogen storage tank 100.

[0045] It should be noted that the present disclosure does not limit the shape of the guide rail 111. The guide rail 111 can be a "U-shaped" structure, or any other shape that allows the sliding assembly 200 to move and heat the heating belt 300. The arrangement of the guide rail 111 does not affect the movement of the sliding assembly 200 on the guide rail 111.

[0046] In some embodiments, the sliding assembly 200 is movably arranged on the guide rail 111, and the sliding assembly 200 includes a sliding block 210 and a driving motor 220. The sliding block 210 is movably connected with the guide rail 111 and can move in the length direction of the bottle body 110; the driving motor 220 is connected with the sliding block 210 and is used to drive the sliding block 210 to slide on the guide rail 111.

[0047] Specifically, the sliding block 210 has a first position adjacent to the hydrogen release pipe 120 and a second position away from the hydrogen release pipe 120 on the guide rail 111. The distance between the first position and the second position is the maximum distance that the sliding assembly 200 can move on the guide rail 111, and the sliding assembly 200 can move between the first position and the second position.

[0048] In some embodiments, the hydrogen storage device further comprises a heating belt 300, which is arranged around the bottle body 110 outside and connected with the sliding assembly 200 for heating the bottle body 110.

[0049] Specifically, the heating belt 300 is arranged around the bottle body 110, the inner surface of the heating belt 300 is wrapped around the bottle body 110, and the outer surface of the heating belt 300 is connected with the sliding block 210 of the sliding assembly 200 and is adapted to move synchronously with the sliding block 210. The sliding assembly 200 drives the heating belt 300 to move in the length direction of the bottle body 110, so as to heat different positions of the bottle body 110.

[0050] When the sliding block 210 drives the heating belt 300 to be in the first position, the heating belt 300 is close to the hydrogen release pipe 120; when the sliding block 210 drives the heating belt 300 to be in the second position, the heating belt 300 is away from the hydrogen release pipe 120. The distance between the first position and the second position is the working range of the heating belt 300 for heating the bottle body.

[0051] In some embodiments, the hydrogen storage device further comprises a control module for controlling the position of the sliding assembly 200 on the guide rail 111 and the temperature of the heating belt 300. The control module is arranged on the hydrogen release pipe 120 and comprises a single-chip microcomputer 410, an electromagnetic valve 420 and a flow meter 430.

[0052] The single-chip microcomputer 410 is connected with the sliding block 210 and is used for collecting temperature information, flow information and hydrogen absorption and release information of the hydrogen storage bottle 100, and controlling the position of the sliding assembly 200 and the temperature of the heating belt 300. In response to a control signal sent by the single-chip microcomputer 410 according to the information of the hydrogen storage bottle 100, the driving motor 220 of the sliding assembly 200 rotates to drive the sliding block 210 to drive the heating belt 300 to move between the first position and the second position, so as to move the heating belt 300 in the length direction of the bottle body 110 and heat the position with lower temperature on the bottle body 110. The movable heating belt 300 can heat according to the heat demand of the hydrogen storage bottle 100, which improves the accuracy of heat supply of the heating belt 300, saves energy and avoids unnecessary cost consumption.

[0053] It should be noted that the connection mode of the single-chip microcomputer 410 and the sliding block 210 is not limited in the disclosure, which can be a wire connection as shown in FIG. 4B, an electrical signal connection, or any other connection mode that can enable the single-chip microcomputer 410 to control the driving motor 220 to work. Figure 1 、 Figure 2 ​

[0054] In some embodiments, the electromagnetic valve 420 is arranged on the hydrogen release pipe 120, for controlling the hydrogen release amount of the hydrogen release pipe 120. During the use of the hydrogen storage bottle 100, the single-chip microcomputer 410 can adjust the opening degree of the electromagnetic valve 420 according to the pre-set hydrogen release threshold, so as to control the gas output amount of the hydrogen storage bottle 100 during the hydrogen release process.

[0055] The flow meter 430 is arranged on the hydrogen release pipe 120, for obtaining the flow information in the hydrogen release pipe 120 per unit time. The single-chip microcomputer 410 obtains the flow information per unit time by using the flow meter 430 and performs accumulation, so as to finally obtain the total gas inlet amount during hydrogen refueling or the total gas outlet amount during hydrogen release.

[0056] The single-chip microcomputer 410 needs to consider the hydrogen storage bottle 100 information and temperature information obtained by the electromagnetic valve 420 and the flow meter 430, and timely regulate and control the temperature and position of the heating belt 300. In this way, the movable heating of the heating belt 300 on the hydrogen storage bottle 100 is realized, and a more intelligent and autonomous heating mode is provided.

[0057] In some embodiments, the hydrogen storage device further comprises an alarm, such as Figure 3 As shown, the alarm is connected with the single-chip microcomputer 410, for dangerous early warning during the work.

[0058] Specifically, the single-chip microcomputer 410 can monitor the flow information of hydrogen absorption and release and the temperature information in the bottle body 110 in real time. When it is monitored that the flow information or the temperature information exceeds the safety range, the single-chip microcomputer 410 will interrupt the heating function of the heating belt 300 and the hydrogen absorption and release function of the hydrogen release pipe 120, and at the same time, make the alarm buzzer alarm, so as to better ensure the safety of the hydrogen absorption and release process.

[0059] Compared with the hydrogen storage bottle 100 heating mode in the related art, the hydrogen storage device provided by the present disclosure has a movable heating belt 300. The conventional heating belt 300 can only fixedly heat one place, while the heating belt 300 in the present disclosure can move on the guide rail 111, so that the entire bottle body 110 can be uniformly heated, and it is ensured that the heat required for hydrogen release can fully reach each part.

[0060] The traditional heating belt 300 cannot give specific temperature values and can only reflect instantaneous temperature, and cannot reflect the change of temperature over time. The controller in the technical solution is equipped with a temperature sensor and a single-chip microcomputer 410, which can collect the temperature in the bottle body 110 in real time and accurately control the heating temperature in the set range, so as to adapt to various applications that require accurate temperature data. The controller can also collect and process temperature information in real time, and can reflect the change trend of temperature over time, and is suitable for applications that require analysis of temperature change trend.

[0061] In addition, the heating belt 300 in the related art usually adopts manual control heating, and cannot realize autonomous on-off of heating according to the temperature feedback in the bottle. The single-chip microcomputer 410 provided by the present disclosure can adjust the opening degree of the electromagnetic valve 420 according to the set threshold value, so as to realize autonomous control of heating according to the temperature feedback in the bottle.

[0062] In summary, the technical solution has the advantages of mobile heating, accurate temperature control, time change reflection, autonomous control of heating, hydrogen release detection, and danger alarm compared with the prior art.

[0063] The specific structure, working principle and beneficial effects of the hydrogen storage device provided by the embodiments of the present disclosure can refer to the hydrogen storage device described in any of the above embodiments, which will not be repeated here.

[0064] Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to. For the system or device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant part can be referred to the method part.

[0065] The above embodiments are only used to illustrate the technical solutions of the present disclosure, but not limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A hydrogen storage device, characterized by, The application relates to a hydrogen storage device. The hydrogen storage device comprises a hydrogen storage bottle and a sliding assembly. The hydrogen storage bottle comprises a bottle body and a hydrogen release pipe. The bottle body is internally provided with a hydrogen storage alloy for storing hydrogen. An outer sidewall of the bottle body is provided with a guide rail.

2. The hydrogen storage device of claim 1, wherein, The sliding assembly is movably arranged on the guide rail and is used for moving in the length direction of the bottle body. A heating belt is arranged around the outside of the bottle body and is connected with the sliding assembly.

3. The hydrogen storage device of claim 2, wherein, The control module is arranged on the hydrogen release pipe and is used for controlling the position of the sliding assembly and the temperature of the heating belt. The control module comprises a single-chip microcomputer. The single-chip microcomputer is used for collecting information of the hydrogen storage bottle and controlling the position of the sliding assembly and the temperature of the heating belt. The hydrogen storage bottle further comprises a temperature sensor. The temperature sensor is arranged inside the bottle body and is used for collecting temperature information of the bottle body in real time. The temperature sensor is arranged in multiple numbers and is used for collecting the temperature information of different positions in the bottle body. The sliding assembly has a first position and a second position on the guide rail. The first position is adjacent to the hydrogen release pipe. The second position is away from the hydrogen release pipe.

7. The hydrogen storage device of claim 1, wherein, The distance between the first position and the second position is the maximum moving distance of the sliding assembly on the guide rail. The sliding assembly comprises a sliding block.

8. The hydrogen storage device of claim 7, wherein, The sliding block is arranged on the guide rail and is used for sliding on the guide rail. The sliding assembly further comprises a driving motor.

9. The hydrogen storage device of claim 1, wherein, The driving motor is connected with the sliding block and is used for driving the sliding block to move. The control module further comprises an electromagnetic valve.

10. The hydrogen storage device of claim 1, wherein, The electromagnetic valve is arranged on the hydrogen release pipe and is used for controlling the hydrogen release amount of the hydrogen release pipe. The control module further comprises a flowmeter. The flowmeter is arranged on the hydrogen release pipe and is used for obtaining the hydrogen absorption and release flow of the hydrogen release pipe.

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