Adaptive constant temperature and constant pressure hydrogen storage device

Abstract

The present application relates to hydrogen storage equipment technical field, provide a kind of adaptive constant temperature constant pressure hydrogen storage equipment, comprising: shell, flexible inner container and pressure control system and temperature control system.The shell is equipped with inner chamber.Flexible inner container is located in inner chamber, and flexible inner container is equipped with storage chamber for storing hydrogen, and flexible inner container is equipped with air inlet and air outlet, and air inlet and air outlet are used to communicate with external pipeline;The gap between flexible inner container and the cavity wall of inner chamber forms oil pressure chamber.Pressure control system is communicated with oil pressure chamber, for into hydraulic oil to oil pressure chamber, to adjust the pressure in oil pressure chamber and the pressure in storage chamber;Part of the structure of temperature control system is in contact with flexible inner container, for adjusting the temperature in storage chamber.The adaptive constant temperature constant pressure hydrogen storage equipment of the present application can control the pressure and temperature in flexible inner container during hydrogen charging and discharging, so that the hydrogen temperature and pressure of flexible inner container are maintained within a certain range.

Description

Technical Field

[0001] This invention relates to the field of hydrogen storage equipment technology, and in particular to an adaptive constant temperature and constant pressure hydrogen storage device. Background Technology

[0002] Hydrogen storage technology is a key link in the hydrogen energy application industry chain. Currently, high-pressure gaseous hydrogen storage has become the most commonly used hydrogen storage method due to its simple equipment structure, fast hydrogen filling and discharging speed, and relatively low cost.

[0003] During the filling of a typical hydrogen storage tank, the internal pressure gradually increases; conversely, the internal pressure decreases when hydrogen is used. This pressure fluctuation presents several problems: First, for downstream equipment (such as fuel cells and hydrogen internal combustion engines), fluctuating intake pressure can affect their efficiency and stability, potentially leading to equipment shutdown or damage. Second, from a safety perspective, excessively high pressure increases the risk of tank rupture, while excessively low pressure may fail to meet usage requirements. Furthermore, if the final pressure is not precisely controlled during the filling process, overfilling or underfilling may occur.

[0004] Meanwhile, during the filling and discharging of hydrogen in the hydrogen storage tank, the temperature of the gas inside the tank undergoes drastic changes. The temperature can reach over 85°C during filling and drop to as low as -40°C during discharging, severely impacting the lifespan of the storage tank. Furthermore, for every 10°C increase in temperature during filling, the hydrogen density decreases by approximately 3%, significantly reducing the tank's hydrogen storage capacity. During discharging, the low temperature increases hydrogen viscosity and reduces the discharging rate, affecting the stable hydrogen supply to the fuel cell system. Summary of the Invention

[0005] This invention provides an adaptive constant temperature and pressure hydrogen storage device to solve the problem that in existing high-pressure gaseous hydrogen storage devices, the internal pressure and temperature fluctuate greatly during hydrogen filling and discharging, which affects the stability, reliability and safety of the hydrogen storage device itself and downstream hydrogen-using equipment.

[0006] This invention provides an adaptive constant temperature and constant pressure hydrogen storage device, comprising: A housing, wherein the housing has an internal cavity; A flexible inner liner is provided in the inner cavity. The flexible inner liner has a storage cavity for storing hydrogen. The flexible inner liner has an inflation port and an exhaust port, which are used to communicate with external pipelines. The gap between the flexible inner liner and the cavity wall of the inner cavity forms a hydraulic cavity. A pressure control system, connected to the hydraulic chamber, is used to supply hydraulic oil to the hydraulic chamber to regulate the pressure inside the hydraulic chamber and the pressure inside the storage chamber; A temperature control system, wherein a portion of the temperature control system is in contact with the flexible inner liner, is used to regulate the temperature inside the storage cavity.

[0007] According to the adaptive constant temperature and pressure hydrogen storage device of the present invention, the flexible inner liner can be extended and retracted along a first direction; the first end of the flexible inner liner along the first direction is connected to the shell; the second end of the flexible inner liner along the first direction is a free end, and the inner cavity is divided into the oil pressure cavity and the heat exchange cavity; part of the structure of the temperature control system is disposed in the heat exchange cavity to exchange heat with the flexible inner liner.

[0008] According to the adaptive constant temperature and constant pressure hydrogen storage device of the present invention, the flexible inner liner includes: A fixing part is fixedly connected to the housing, and the air inlet and the air outlet are provided on the fixing part; The telescopic part is connected to the fixed part, and the telescopic part and the fixed part are joined together to form the storage cavity. The telescopic part can expand and contract along the first direction when the internal and external air pressure changes. The end of the telescopic part away from the fixed part is joined with the cavity wall of the inner cavity to form the hydraulic cavity.

[0009] According to the adaptive constant temperature and pressure hydrogen storage device of the present invention, the temperature control system includes: A temperature sensor is disposed in the storage cavity to detect the temperature inside the storage cavity; A flexible heat exchange tube, wherein a portion of the flexible heat exchange tube is attached to the side wall of the telescopic part; A liquid supply device, connected to the temperature sensor and in communication with the flexible heat exchange tube, is used to supply a heat transfer medium to the flexible heat exchange tube based on the detection data fed back by the temperature sensor, so as to regulate the temperature inside the storage cavity.

[0010] According to the adaptive constant temperature and constant pressure hydrogen storage device of the present invention, the flexible heat exchange tube is spirally wound around the side wall of the telescopic part around an axis extending along the first direction.

[0011] According to the adaptive constant temperature and constant pressure hydrogen storage device of the present invention, the telescopic part has a corrugated tube structure, and the outer wall of the telescopic part has protrusions and recesses that are staggered along the first direction, and a portion of the flexible heat exchange tube is attached to the recesses.

[0012] In the adaptive constant temperature and pressure hydrogen storage device according to the present invention, the temperature sensor is disposed on the fixed part.

[0013] The adaptive constant temperature and constant pressure hydrogen storage device according to the present invention further includes: A partition plate is disposed at the second end of the flexible inner liner to isolate the hydraulic chamber and the heat exchange chamber.

[0014] The adaptive constant temperature and constant pressure hydrogen storage device according to the present invention further includes: A sealing element is disposed between the edge of the partition plate and the cavity wall of the inner cavity.

[0015] According to the adaptive constant temperature and constant pressure hydrogen storage device of the present invention, the pressure control system includes: A pressure sensor is disposed in the storage cavity to detect the pressure inside the storage cavity; The oil supply device is communicatively connected to the pressure sensor and communicates with the hydraulic chamber. It is used to supply hydraulic oil to the hydraulic chamber based on the detection data fed back by the pressure sensor and to adjust the amount of hydraulic oil in the hydraulic chamber, so as to adjust the pressure in the hydraulic chamber and the pressure in the storage chamber.

[0016] The adaptive constant-temperature and constant-pressure hydrogen storage device of the present invention features a flexible inner liner within the shell, forming a storage cavity for storing hydrogen. A hydraulic chamber is formed between the outer wall of the flexible inner liner and the inner cavity wall. A pressure control system regulates the internal pressure of the flexible inner liner by controlling the amount of hydraulic oil in the hydraulic chamber, in conjunction with the deformation of the flexible inner liner during hydrogen filling and discharging, thereby achieving constant-pressure or near-constant-pressure hydrogen filling and discharging. A temperature control system contacts the flexible inner liner for heat exchange, regulating its temperature to achieve constant-temperature or near-constant-temperature hydrogen filling and discharging. In summary, the adaptive constant-temperature and constant-pressure hydrogen storage device of the present invention can control the pressure and temperature within the flexible inner liner during hydrogen filling and discharging, maintaining the hydrogen temperature and pressure within a certain range. This effectively solves the problem in existing high-pressure gaseous hydrogen storage devices where large fluctuations in internal pressure and temperature occur during hydrogen filling and discharging, affecting the stability, reliability, and safety of the storage device itself and downstream hydrogen-using equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the adaptive constant temperature and pressure hydrogen storage device provided in an embodiment of the present invention.

[0019] Figure 2 This is a cross-sectional schematic diagram of the adaptive constant temperature and pressure hydrogen storage device provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the hydrogen charging process of the adaptive constant temperature and pressure hydrogen storage device provided in this embodiment of the invention.

[0021] Figure 4 This is a schematic diagram of the hydrogen release process of the adaptive constant temperature and pressure hydrogen storage device provided in the embodiment of the present invention.

[0022] Figure label: 1. Adaptive constant temperature and pressure hydrogen storage equipment; 2. Hydrogen supply equipment; 3. Hydrogen consumption equipment; 11. Shell; 111. Inner cavity; 1111. Hydraulic cavity; 1112. Heat exchange cavity; 12. Flexible inner liner; 121. Storage cavity; 122. Inflation port; 123. Exhaust port; 124. Fixing part; 125. Telescopic part; 1251. Protrusion; 1252. Recess; 13. Pressure control system; 131. Pressure sensor; 132. Oil supply device; 14. Temperature control system; 141. Temperature sensor; 142. Flexible heat exchange tube; 143. Liquid supply device; 15. Partition plate; 16. Seal. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] The following is combined with Figures 1-4 The present invention describes an adaptive constant temperature and constant pressure hydrogen storage device.

[0025] like Figure 1 and Figure 2 As shown, the adaptive constant temperature and pressure hydrogen storage device 1 provided by the present invention includes: a shell 11, a flexible inner liner 12, a pressure control system 13, and a temperature control system 14.

[0026] The shell 11 has an inner cavity 111. A flexible inner liner 12 is disposed in the inner cavity 111. The flexible inner liner 12 has a storage cavity 121 for storing hydrogen. The flexible inner liner 12 has an inflation port 122 and an exhaust port 123 for connecting to external pipelines. The gap between the flexible inner liner 12 and the cavity wall of the inner cavity 111 forms a hydraulic cavity 1111.

[0027] The pressure control system 13 is connected to the hydraulic chamber 1111 and is used to introduce hydraulic oil into the hydraulic chamber 1111 to regulate the pressure in the hydraulic chamber 1111 and the pressure in the storage chamber 121; part of the temperature control system 14 is in contact with the flexible inner liner 12 and is used to regulate the temperature in the storage chamber 121.

[0028] In this embodiment, the housing 11 is the overall support structure of the adaptive constant temperature and pressure hydrogen storage device 1. The housing 11 has an inner cavity 111 for installing the flexible inner liner 12 and other structures. The flexible inner liner 12 has a storage cavity 121 for storing hydrogen. The flexible inner liner 12 can be connected to the external hydrogen supply device 2 and hydrogen consumption device 3 (such as fuel cell, hydrogen internal combustion engine, etc.) through its own inflation port 122 and exhaust port 123 respectively. It receives hydrogen from the hydrogen supply device 2 through the inflation port 122 for storage and supplies hydrogen to the downstream hydrogen consumption device 3 through the exhaust port 123.

[0029] Meanwhile, it is understood that by providing a flexible inner liner 12 in the inner cavity 111, a hydraulic chamber 1111, which is isolated from the storage cavity 121, can be formed between the flexible inner liner 12 and the cavity wall of the inner cavity 111. The hydraulic chamber 1111 can be connected to the pressure control system 13. The pressure control system 13 is used to supply hydraulic oil to the hydraulic chamber 1111 and control the amount of hydraulic oil in the hydraulic chamber 1111, so as to adjust the pressure of the storage cavity 121 in the flexible inner liner 12 in conjunction with the deformation capacity of the flexible inner liner 12 itself, so that the pressure in the storage cavity 121 is maintained within a certain range, avoiding the pressure being too high or too low.

[0030] In practical applications, the pressure control system 13 can detect the pressure inside the storage chamber 121 using a corresponding detection device (such as a sensor), and then, based on the pressure inside the storage chamber 121, introduce hydraulic oil into or extract hydraulic oil from the oil pressure chamber 1111. For example, Figure 3 The control flow of the adaptive constant temperature and constant pressure hydrogen storage device 1 during the hydrogen filling process is shown. During the process of filling hydrogen into the flexible inner liner 12, as hydrogen is introduced, the flexible inner liner 12 expands and compresses the hydraulic oil in the outer oil pressure chamber 1111. During this process, the pressure in the storage chamber 121 continues to rise. When the pressure exceeds the preset upper limit threshold, the pressure control system 13 can extract part of the hydraulic oil in the oil pressure chamber 1111 through the corresponding pipeline to reduce the pressure in the storage chamber 121 and maintain the pressure in the storage chamber 121 within a certain range to achieve constant pressure hydrogen filling or close to constant pressure hydrogen filling. Figure 4 The control flow of the hydrogen release process of the adaptive constant temperature and constant pressure hydrogen storage device 1 is shown. During the process of releasing hydrogen outward from the flexible inner liner 12, the hydrogen is discharged outward, causing the flexible inner liner 12 to contract and the pressure in the storage chamber 121 to continuously decrease. When the pressure is lower than the preset lower limit threshold, the pressure control system 13 can inject hydraulic oil into the oil pressure chamber 1111 through the corresponding pipeline to compensate for the pressure loss, so as to achieve constant pressure hydrogen release or close to constant pressure hydrogen release.

[0031] Meanwhile, in this embodiment, a temperature control system 14 is provided that contacts the flexible inner liner 12. The temperature control system 14 can exchange heat with the flexible inner liner 12 to regulate the temperature of the flexible inner liner 12 and the storage cavity 121. For example, the temperature control system 14 can detect the temperature inside the storage cavity 121 through a corresponding detection device (such as a thermometer, sensor, etc.). Figure 3 As shown, when the temperature inside the storage cavity 121 exceeds a preset upper limit threshold (which typically occurs during the process of filling the flexible inner liner 12 with hydrogen), the flexible inner liner 12 is cooled to reduce the temperature inside the storage cavity 121; as Figure 4 As shown, when the temperature inside the storage cavity 121 is lower than a preset lower threshold (which usually occurs during the process of releasing hydrogen from the flexible inner liner 12), the flexible inner liner 12 is heated to increase the temperature inside the storage cavity 121.

[0032] As can be seen from the above, the adaptive constant temperature and constant pressure hydrogen storage device 1 of the present invention provides a flexible inner liner 12 in the inner cavity 111 of the shell 11. A storage cavity 121 for storing hydrogen is formed inside the flexible inner liner 12. A hydraulic chamber 1111 is formed between the outer wall of the flexible inner liner 12 and the cavity wall of the inner cavity 111. The pressure control system 13 can control the amount of hydraulic oil in the hydraulic chamber 1111 to match the deformation of the flexible inner liner 12 during the hydrogen filling and discharging process, thereby regulating the internal pressure of the flexible inner liner 12 to achieve constant pressure hydrogen filling and discharging or near-constant pressure hydrogen filling and discharging. The temperature control system 14 can contact the flexible inner liner 12 for heat exchange to regulate the temperature of the flexible inner liner 12 to achieve constant temperature hydrogen filling and discharging or near-constant temperature hydrogen filling and discharging. In summary, the adaptive constant temperature and pressure hydrogen storage device 1 of the present invention can control the pressure and temperature inside the flexible inner liner 12 during the hydrogen filling and discharging process, so that the hydrogen temperature and pressure inside the flexible inner liner 12 are maintained within a certain range. This effectively solves the problem that in the prior art, the internal pressure and temperature of high-pressure gaseous hydrogen storage devices will fluctuate greatly during hydrogen filling and discharging, which will affect the stability, reliability and safety of the hydrogen storage device itself and downstream hydrogen-using devices.

[0033] In some embodiments, such as Figure 1 and Figure 2 As shown, the flexible inner liner 12 can extend and retract along the first direction; the first end of the flexible inner liner 12 along the first direction is connected to the shell 11; the second end of the flexible inner liner 12 along the first direction is a free end, and the inner cavity 111 is divided into a hydraulic cavity 1111 and a heat exchange cavity 1112; part of the structure of the temperature control system 14 is located in the heat exchange cavity 1112 to contact and exchange heat with the flexible inner liner 12.

[0034] In this embodiment, it is understood that the first direction can be the length direction, width direction, or any other direction of the entire shell 11, and this application does not limit it. The flexible inner liner 12 is configured to extend and retract along the first direction, which makes the deformation direction of the flexible inner liner 12 more controllable and also facilitates the layout of the position of the hydraulic chamber 1111.

[0035] Specifically, the first end of the flexible inner liner 12 along the first direction can be fixedly connected to the shell 11 to prevent the flexible inner liner 12 from swaying arbitrarily within the shell 11; the second end of the flexible inner liner 12 can be a free end so that it can move freely within the inner cavity 111 as the flexible inner liner 12 expands and contracts. At the same time, the edge of the second end of the flexible inner liner 12 can contact the cavity wall of the inner cavity 111 to divide the inner cavity 111 into a hydraulic chamber 1111 and a heat exchange chamber 1112. The hydraulic chamber 1111 is used to introduce or discharge hydraulic oil, and the heat exchange chamber 1112 is used to house the heat exchange structure of the temperature control system 14. This design can avoid the hydraulic oil and the heat exchange structure from coming into contact with each other, so as to avoid the mutual influence between the pressure control system 13 and the temperature control system 14.

[0036] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the flexible inner liner 12 includes: a fixed part 124 and a telescopic part 125; the fixed part 124 is fixedly connected to the shell 11, and an inflation port 122 and an exhaust port 123 are provided on the fixed part 124; the telescopic part 125 is connected to the fixed part 124, and the telescopic part 125 and the fixed part 124 are joined together to form a storage cavity 121, and the telescopic part 125 can expand and contract along a first direction when the internal and external air pressure changes; one end of the telescopic part 125 away from the fixed part 124 is joined with the cavity wall of the inner cavity 111 to form a hydraulic cavity 1111.

[0037] In this embodiment, the fixing part 124 is used to fix it to the housing 11. The fixing part 124 can be used to set the inflation port 122 and the exhaust port 123. The fixing part 124 will not deform with the change of air pressure, so that the positions of the inflation port 122 and the exhaust port 123 are fixed, which facilitates the connection with the external pipeline. It can be understood that the housing 11 is provided with through holes corresponding to the positions of the inflation port 122 and the exhaust port 123, so that the external pipeline can pass through the through holes and connect with the inflation port 122 or the exhaust port 123.

[0038] The telescopic part 125 is a deformable part of the flexible inner liner 12. The telescopic part 125 can expand and contract along the first direction under the action of internal and external air pressure.

[0039] In some embodiments, such as Figure 1 and Figure 2As shown, the temperature control system 14 includes: a temperature sensor 141, a flexible heat exchange tube 142, and a liquid supply device 143; the temperature sensor 141 is disposed in the storage cavity 121 and is used to detect the temperature inside the storage cavity 121; a portion of the structure of the flexible heat exchange tube 142 is attached to the side wall of the telescopic part 125; the liquid supply device 143 is connected to the temperature sensor 141 and communicates with the flexible heat exchange tube 142, and is used to introduce a heat transfer medium into the flexible heat exchange tube 142 based on the detection data fed back by the temperature sensor 141, so as to regulate the temperature inside the storage cavity 121.

[0040] In this embodiment, a temperature sensor 141 is installed in the storage cavity 121. The temperature sensor 141 can detect the temperature inside the storage cavity 121 and generate a corresponding temperature signal to be fed back to the liquid supply device 143. The controller configured in the liquid supply device 143 can determine whether the temperature of the storage cavity 121 is within the set range based on the temperature signal fed back by the temperature sensor 141. If the temperature inside the storage cavity 121 deviates from the set range, a heat transfer medium is introduced into the flexible heat exchange tube 142. The heat transfer medium flows along the flexible heat exchange tube 142 and exchanges heat with the telescopic part 125 through the flexible heat exchange tube 142 to regulate the temperature inside the storage cavity 121 of the entire flexible inner liner 12. In addition, it is understood that the flexible heat exchange tube 142 has a certain bending deformation capability and can bend or deform to a certain extent with the outer wall of the telescopic part 125 when the telescopic part 125 is extended or retracted, so as to maintain the contact and heat exchange between the flexible heat exchange tube 142 and the telescopic part 125.

[0041] In practical applications, the flexible heat exchange tube 142 can be connected to the liquid supply device 143 to form a circulation loop of the heat transfer medium, so that the heat transfer medium can circulate between the flexible heat exchange tube 142 and the liquid supply device 143.

[0042] It is understood that the heat transfer medium can be a liquid medium such as water or oil, and this application does not limit it. The liquid supply device 143 can store a heating medium with a temperature higher than the lower limit of a preset temperature range and a cooling medium with a temperature lower than the upper limit of a preset temperature range. For example... Figure 3 As shown, during the process of filling the flexible inner liner 12 with hydrogen, the temperature inside the storage cavity 121 rises. If the temperature exceeds the upper limit of the preset temperature range, the liquid supply device 143 can introduce a cooling medium into the flexible heat exchange tube 142 to cool the gas inside the storage cavity 121; Figure 4 As shown, during the release of hydrogen through the flexible inner liner 12, the temperature inside the storage chamber 121 decreases. If the temperature is lower than the lower limit of the preset temperature range, the liquid supply device 143 can introduce a heating medium into the flexible heat exchange tube 142 to heat the gas inside the storage chamber 121.

[0043] In some embodiments, such as Figure 2As shown, the flexible heat exchange tube 142 is spirally wound around the side wall of the telescopic part 125 around an axis extending in the first direction.

[0044] In this embodiment, by designing the flexible heat exchange tube 142 to be spirally wound around the side wall of the telescopic part 125 along an axis extending in a first direction, the flexible heat exchange tube 142 can uniformly cover the side wall of the telescopic part 125, thereby increasing the contact area between the flexible heat exchange tube 142 and the telescopic part 125, enabling sufficient heat exchange between the flexible heat exchange tube 142 and the telescopic part 125, and achieving higher heat exchange efficiency.

[0045] Specifically, in some embodiments, such as Figure 2 As shown, the telescopic part 125 has a corrugated tube structure, and the outer wall of the telescopic part 125 has protrusions 1251 and recesses 1252 that are staggered along the first direction. A portion of the flexible heat exchange tube 142 is attached to the recesses 1252.

[0046] In this embodiment, the telescopic part 125 is configured as a corrugated tube structure. The sidewall of the telescopic part 125 is formed by multiple pipe segments bent and connected to each other. When the air pressure inside and outside the telescopic part 125 changes, the bending angle between adjacent pipe segments can change to achieve the telescopic extension and contraction of the telescopic part 125. At the same time, the bending connection of adjacent pipe segments also forms protrusions 1251 and recesses 1252 that are staggered along the first direction on the outer wall of the telescopic part 125. It can be understood that both the protrusions 1251 and the recesses 1252 are annular, and the flexible heat exchange tube 142 is also spirally wound around the sidewall of the telescopic part 125, so that a portion of the flexible heat exchange tube 142 can be attached to the recesses 1251. 52, thereby allowing the section of flexible heat exchange tube 142 located within the recess 1252 to be limited by two adjacent protrusions 1251, and thus allowing this section of tube to shift with the shape and position of the recess 1252 when the telescopic part 125 extends and retracts. In other words, the flexible heat exchange tube 142 is spirally wound to form multiple annular tube sections, which are limited by the corresponding recess 1252. When the telescopic part 125 extends and retracts, the spacing between adjacent annular tube sections can be adaptively adjusted, so that the flexible heat exchange tube 142 can always be relatively evenly distributed on the outer surface of the telescopic part 125, and the flexible heat exchange tube 142 and the telescopic part 125 can exchange heat fully and evenly.

[0047] In some embodiments, such as Figure 2 As shown, the temperature sensor 141 is disposed on the fixing part 124. In this embodiment, by disposing the temperature sensor 141 on the fixing part 124, the fixing part 124 will not deform, thereby making the position of the temperature sensor 141 more stable and facilitating the wiring of the temperature sensor 141 to connect the temperature sensor 141 to other devices (such as the liquid supply device 143).

[0048] In some embodiments, such as Figure 2 As shown, the adaptive constant temperature and pressure hydrogen storage device 1 also includes: a partition plate 15, which is disposed at the second end of the flexible inner liner 12 to isolate the oil pressure chamber 1111 and the heat exchange chamber 1112.

[0049] In this embodiment, by providing a partition plate 15 at the second end of the flexible inner liner 12, the partition plate 15 can better separate the hydraulic chamber 1111 and the heat exchange chamber 1112. Simultaneously, the partition plate 15 can adopt a rigid structure, allowing the oil pressure in the hydraulic chamber 1111 to be uniformly transmitted to the flexible inner liner 12 through the partition plate 15, thus coordinating with the air pressure changes inside the flexible inner liner 12 to allow the flexible inner liner 12 to expand and contract along the first direction.

[0050] Specifically, in some embodiments, such as Figure 2 As shown, the adaptive constant temperature and pressure hydrogen storage device 1 also includes: a sealing element 16; the sealing element 16 is disposed between the edge of the partition plate 15 and the cavity wall of the inner cavity 111.

[0051] In this embodiment, a seal 16 is provided between the edge of the partition plate 15 and the cavity wall of the inner cavity 111. The seal 16 further seals the gap between the partition plate 15 and the inner cavity 111 to prevent hydraulic oil from leaking into the heat exchange chamber 1112.

[0052] In some embodiments, such as Figure 2 As shown, the side wall of the partition plate 15 is provided with a groove, and the sealing element 16 is disposed in the groove; optionally, there can be multiple grooves, which are arranged at intervals along the first direction, and multiple sealing elements 16 are also provided, with each sealing element 16 corresponding to one of the grooves. Specifically, the sealing element 16 can be a sealing gasket.

[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the pressure control system 13 includes a pressure sensor 131 and an oil supply device 132. The pressure sensor 131 is disposed in the storage chamber 121 and is used to detect the pressure in the storage chamber 121. The oil supply device 132 is communicatively connected to the pressure sensor 131 and is connected to the hydraulic chamber 1111. It is used to supply hydraulic oil to the hydraulic chamber 1111 based on the detection data fed back by the pressure sensor 131 and to adjust the amount of hydraulic oil in the hydraulic chamber 1111, so as to adjust the pressure in the hydraulic chamber 1111 and the pressure in the storage chamber 121.

[0054] In this embodiment, a pressure sensor 131 is installed in the storage cavity 121. The pressure sensor 131 can be used to detect the pressure in the storage cavity 121 and generate a corresponding pressure signal to feed back to the oil supply device 132. The controller configured in the oil supply device 132 can determine whether the pressure in the storage cavity 121 is within the set range based on the pressure signal fed back by the pressure sensor 131. If the pressure in the storage cavity 121 deviates from the set range, hydraulic oil is introduced into the oil pressure chamber 1111 or hydraulic oil is extracted to adjust the oil pressure in the oil pressure chamber 1111, so as to cooperate with the deformable flexible inner liner 12 to adjust the pressure in the storage cavity 121.

[0055] Specifically, in some embodiments, the pressure sensor 131 is disposed in the fixing part 124. By disposing the pressure sensor 131 in the fixing part 124, the fixing part 124 will not deform, thereby making the position of the pressure sensor 131 more stable and facilitating the wiring of the pressure sensor 131 to connect the pressure sensor 131 to other devices (such as the oil supply device 132).

[0056] Optionally, the housing 11 may be provided with an oil inlet and an oil outlet communicating with the hydraulic chamber 1111; the oil supply device 132 is equipped with an oil injection pipe and an oil return pipe, the oil injection pipe communicating with the oil inlet of the hydraulic chamber 1111, and the oil return pipe communicating with the oil outlet of the hydraulic chamber 1111. Both the oil injection pipe and the oil return pipe are equipped with corresponding control valves; such as... Figure 4 As shown, when the pressure in the storage cavity 121 inside the flexible inner liner 12 is too low, the control valve in the return oil pipe closes, the control valve in the injection oil pipe opens, and hydraulic oil is supplied to the oil pressure chamber 1111 through the oil pump configured in the oil supply device 132; similarly, as Figure 3 As shown, when the pressure in the storage chamber 121 inside the flexible inner liner 12 is too high, the control valve in the oil injection pipe closes and the control valve in the oil return pipe opens, and part of the hydraulic oil flows back to the oil supply device 132 to reduce the oil pressure in the oil pressure chamber 1111, thereby reducing the pressure in the storage chamber 121.

[0057] In some specific embodiments, the hydrogen supply device 2 can be an electrolysis hydrogen production device, and the hydrogen consumption device 3 can be a hydrogen fuel cell device.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive constant temperature and constant pressure hydrogen storage device, characterized in that, include: A housing, wherein the housing has an internal cavity; A flexible inner liner is provided in the inner cavity. The flexible inner liner has a storage cavity for storing hydrogen. The flexible inner liner has an inflation port and an exhaust port, which are used to communicate with external pipelines. The gap between the flexible inner liner and the cavity wall of the inner cavity forms a hydraulic cavity. A pressure control system, connected to the hydraulic chamber, is used to supply hydraulic oil to the hydraulic chamber to regulate the pressure inside the hydraulic chamber and the pressure inside the storage chamber; A temperature control system, wherein a portion of the temperature control system is in contact with the flexible inner liner, is used to regulate the temperature inside the storage cavity.

2. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 1, characterized in that, The flexible inner liner can extend and retract along a first direction; the first end of the flexible inner liner along the first direction is connected to the shell; the second end of the flexible inner liner along the first direction is a free end, and the inner cavity is divided into the hydraulic cavity and the heat exchange cavity; part of the temperature control system is located in the heat exchange cavity to exchange heat with the flexible inner liner.

3. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 2, characterized in that, The flexible inner liner includes: A fixing part is fixedly connected to the housing, and the air inlet and the air outlet are provided on the fixing part; The telescopic part is connected to the fixed part, and the telescopic part and the fixed part are joined together to form the storage cavity. The telescopic part can expand and contract along the first direction when the internal and external air pressure changes. The end of the telescopic part away from the fixed part is joined with the cavity wall of the inner cavity to form the hydraulic cavity.

4. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 3, characterized in that, The temperature control system includes: A temperature sensor is disposed in the storage cavity to detect the temperature inside the storage cavity; A flexible heat exchange tube, wherein a portion of the flexible heat exchange tube is attached to the side wall of the telescopic part; A liquid supply device, connected to the temperature sensor and in communication with the flexible heat exchange tube, is used to supply a heat transfer medium to the flexible heat exchange tube based on the detection data fed back by the temperature sensor, so as to regulate the temperature inside the storage cavity.

5. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 4, characterized in that, The flexible heat exchange tube is spirally wound around the side wall of the telescopic part around an axis extending along the first direction.

6. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 4 or 5, characterized in that, The telescopic part has a corrugated tube structure, and the outer wall of the telescopic part has protrusions and recesses that are staggered along the first direction. Part of the flexible heat exchange tube is attached to the recesses.

7. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 4, characterized in that, The temperature sensor is located on the fixed part.

8. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 2, characterized in that, Also includes: A partition plate is disposed at the second end of the flexible inner liner to isolate the hydraulic chamber and the heat exchange chamber.

9. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 8, characterized in that, Also includes: A sealing element is disposed between the edge of the partition plate and the cavity wall of the inner cavity.

10. The adaptive constant temperature and constant pressure hydrogen storage device according to claim 1, characterized in that, The pressure control system includes: A pressure sensor is disposed in the storage cavity to detect the pressure inside the storage cavity; The oil supply device is communicatively connected to the pressure sensor and communicates with the hydraulic chamber. It is used to supply hydraulic oil to the hydraulic chamber based on the detection data fed back by the pressure sensor and to adjust the amount of hydraulic oil in the hydraulic chamber, so as to adjust the pressure in the hydraulic chamber and the pressure in the storage chamber.

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