Liquid-cooled solid-state hydrogen storage module

Abstract

The present application relates to a kind of liquid-cooled solid hydrogen storage module, including jacket, solid hydrogen storage bottle and bottom cover;The solid hydrogen storage bottle is arranged in jacket, and the bottom cover is assembled in the end of jacket;Flow passage outlet and flow passage entrance are provided on the jacket, and transmission channel is reserved on the jacket, and the flow passage outlet and flow passage entrance are respectively communicated with the two ends of transmission channel;Connection structure is configured between the jacket and the bottom cover, wherein the connection structure can make the bottom cover more simple and easy when docking. Hydrogen filling interface adopts quick plug-in design, which can realize quick connection and separation with hydrogen storage bottle hydrogen filling port;Liquid cooling system adopts closed circulation structure, cooling medium starts from cooling medium storage tank, is pressurized after circulating pump, enters liquid cooling pipeline, absorbs heat generated in the process of hydrogen storage in the process of flowing in pipeline, and then returns to storage tank.

Description

Technical Field

[0001] This invention belongs to the field of hydrogen storage technology, specifically a liquid-cooled solid hydrogen storage module. Background Technology

[0002] With the increasing global demand for clean energy, hydrogen energy is playing an increasingly important role in the energy sector due to its cleanliness and high efficiency. Solid-state hydrogen storage technology, as a key direction for hydrogen energy storage, has attracted widespread attention due to its high hydrogen storage density and safety. However, existing solid-state hydrogen storage cylinders have many problems that need to be solved in practical applications.

[0003] In terms of space utilization and weight, traditional solid hydrogen storage cylinder designs are often not compact enough, occupy a large space, and due to unreasonable materials and structures, they are heavy in weight. This not only increases the difficulty of transportation and installation, but also limits their application in some scenarios with strict space and weight requirements, such as mobile hydrogen energy equipment and small hydrogen power systems.

[0004] In terms of thermal management, solid-state hydrogen storage is accompanied by thermal effects. Ineffective thermal management can negatively impact storage efficiency and the performance of storage materials. Existing cooling methods either fail to effectively remove the heat generated during storage, leading to excessively high internal temperatures and reduced efficiency, or employ complex cooling systems that increase equipment costs, maintenance complexity, and startup difficulty. Furthermore, few hydrogen storage cylinders are specifically designed with flow channels for thermal management systems, resulting in irrational distribution of the cooling medium and further hindering cooling performance.

[0005] Regarding modular design, most traditional solid-state hydrogen storage cylinders lack a modular concept, resulting in low integration between components and making it difficult to flexibly combine and adjust them according to different application requirements. This makes it impossible to quickly and conveniently optimize the configuration of hydrogen storage cylinders when facing diverse usage scenarios, thus limiting the widespread application of solid-state hydrogen storage technology.

[0006] In view of this, a liquid-cooled solid-state hydrogen storage module is proposed. Summary of the Invention

[0007] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0008] Given the following technical problems in existing technologies: current solid-state hydrogen storage cylinders have numerous shortcomings in terms of space utilization, thermal management, modularity, start-up performance, energy cycle, and hydrogen filling equipment, which seriously hinder the promotion and application of solid-state hydrogen storage technology, it is of significant practical importance to develop a modular liquid-cooled solid-state hydrogen storage cylinder and its hydrogen filling base that can solve the above problems.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a liquid-cooled solid hydrogen storage module, comprising a jacket, a solid hydrogen storage cylinder and a bottom cover;

[0010] The solid hydrogen storage cylinder is housed within a jacket, and the bottom cover is fitted to the end of the jacket.

[0011] The jacket is provided with a flow channel outlet and a flow channel inlet, and a transfer channel is reserved on the jacket. The flow channel outlet and the flow channel inlet are respectively connected to the two ends of the transfer channel.

[0012] A connecting structure is provided between the jacket and the bottom cover, which makes it easier and simpler to connect the bottom cover.

[0013] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the inner edge of the end of the jacket facing the bottom cover is milled into a chamfered part, and a retaining cavity is reserved on the inner edge of the end of the jacket near the chamfered part. The inner edge of the retaining cavity near the chamfered part is milled into a slightly inclined part.

[0014] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the connection structure includes a support, a retaining ball, and a linkage block. The bottom cover has a movable channel milled on the side facing the jacket. An inner support channel is milled on the inner edge of the movable channel. The retaining ball is movably configured in the movable channel, wherein the retaining ball can extend and retract in the movable channel in the up, down, left, and right directions. The retaining ball has a limit in the movable channel and is not easy to detach from the movable channel.

[0015] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the support extends and retracts within the inner support channel. An elastic element is disposed between the support and the inner edge of the inner support channel. The support contacts the retaining bead. The cooperation between the support and the elastic element facilitates the docking of the bottom cover and the jacket.

[0016] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the inner edge of the jacket is milled with a transverse channel, the linkage block moves in and out of the transverse channel, and an elastic element is arranged between the linkage block and the transverse channel.

[0017] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the linkage block has an integrally formed protrusion on one end near the elastic element. The side of the protrusion facing the retaining bead is defined as the flat bearing portion, and the adjacent side of the protrusion near the flat bearing portion is defined as the slope.

[0018] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the back of the bottom cover has a pre-reserved annular channel, and an operating ring is hinged in the annular channel. The side of the operating ring facing the channel is provided with a protrusion, which facilitates the rotation of the operating ring.

[0019] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, an arc disk is fixedly connected to one end of the linkage block facing the operating ring. The arc disk has a semi-circular shape, which is convenient to be squeezed by the operating ring to drive the linkage block to perform telescopic movement.

[0020] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, the operating ring is milled with a recessed channel on the side facing the linkage block. When the recessed channel and the arc disk are aligned, the elastic element two is compressed. When the recessed channel and the arc disk are misaligned, the elastic element two is unfolded.

[0021] As a preferred technical solution for a liquid-cooled solid-state hydrogen storage module, a tightening bolt is connected to the center of the bottom cover, and a drain channel is provided on the side of the bottom cover near the tightening bolt.

[0022] The beneficial effects of this invention are:

[0023] The hydrogen filling interface adopts a quick-plug design, which can quickly connect and disconnect from the hydrogen filling port of the hydrogen storage cylinder;

[0024] The liquid cooling system adopts a closed-loop structure. The cooling medium starts from the cooling medium storage tank, is pressurized by the circulation pump, enters the liquid cooling pipeline, absorbs the heat generated during the hydrogen storage process during the flow in the pipeline, and then returns to the storage tank.

[0025] This solution can reduce water volume, make reasonable use of equipment waste heat, and avoid contact thermal resistance.

[0026] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Wherein:

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 This is a schematic diagram from another perspective of the present invention.

[0030] Figure 3This is a cross-sectional schematic diagram of the present invention.

[0031] Figure 4 This invention is based on Figure 3 Enlarged diagram of point A in the middle.

[0032] Figure 5 This is a cross-sectional schematic diagram of the jacket of the present invention.

[0033] Figure 6 This is a schematic diagram of the bottom cover of the present invention.

[0034] Figure 7 This is a schematic diagram of the connection between the jacket and the bottom cover of the present invention. Figure 1 .

[0035] Figure 8 This is a schematic diagram of the connection between the jacket and the bottom cover of the present invention. Figure 2 .

[0036] Figure label:

[0037] 100. Jacket; 1001. Chamfered section; 1002. Slightly inclined section; 1003. Cavity; 101. Flow channel outlet; 102. Flow channel inlet; 200. Solid hydrogen storage cylinder; 300. Bottom cover; 301. Movable channel; 302. Internal support channel; 303. Elastic component one; 304. Support; 305. Clamping bead; 306. Lateral channel; 307. Linkage block; 3071. Slope; 3072. Flat bearing section; 308. Elastic component two; 309. Arc plate; 310. Annular channel; 311. Operating ring; 312. Recessed channel; 313. Protrusion; 314. Tightening bolt; 315. Drainage channel. Detailed Implementation

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Reference Figure 1 , 2 5. A liquid-cooled solid-state hydrogen storage module, comprising a jacket 100, a solid-state hydrogen storage cylinder 200, and a bottom cover 300; the solid-state hydrogen storage cylinder 200 is disposed inside the jacket 100, and the bottom cover 300 is assembled at the end of the jacket 100.

[0040] The jacket 100 is provided with a flow channel outlet 101 and a flow channel inlet 102. A transfer channel is reserved on the jacket 100. The flow channel outlet 101 and the flow channel inlet 102 are respectively connected to the two ends of the transfer channel. The inner edge of the end of the jacket 100 facing the bottom cover 300 is milled into a chamfered part 1001. A retaining cavity 1003 is reserved on the inner edge of the end of the jacket 100 near the chamfered part 1001. The inner edge of the retaining cavity 1003 near the chamfered part 1001 is milled into a slightly inclined part 1002.

[0041] Reference Figure 5 and 6 A tightening bolt 314 is connected to the center of the bottom cover 300, and a drain duct 315 is provided on the side of the bottom cover 300 near the tightening bolt 314.

[0042] Reference Figure 3 , 4 A connecting structure is provided between the jacket 100 and the bottom cover 300, which makes docking of the bottom cover 300 simpler and easier. The connecting structure includes a support 304, a retaining ball 305, and a linkage block 307. The bottom cover 300 has a movable channel 301 milled on the side facing the jacket 100. An inner support channel 302 is milled on the inner edge of the movable channel 301. The retaining ball 305 is movably disposed in the movable channel 301. The retaining ball 305 can extend and retract in the movable channel 301 in an up, down, left, and right manner. The retaining ball 305 has a limit in the movable channel 301 and is not easy to disengage from the movable channel 301. The support 304 extends and retracts in the inner support channel 302. An elastic element 303 is disposed between the inner edge of the support 304 and the inner support channel 302. The support 304 and the retaining bead 305 are in contact. The cooperation between the support 304 and the elastic element 303 facilitates the docking of the bottom cover 300 and the sleeve 100. The inner edge of the sleeve 100 is also milled with a transverse channel 306. The linkage block 307 moves in and out of the transverse channel 306. An elastic element 308 is disposed between the linkage block 307 and the transverse channel 306. A protrusion is integrally formed on the end of the linkage block 307 near the elastic element 308. The side of the protrusion facing the retaining bead 305 is defined as the flat bearing part 3072, and the adjacent side of the protrusion near the flat bearing part 3072 is defined as the ramp 3071.

[0043] Reference Figure 4 , 6 7 and 8, the back of the bottom cover 300 has a pre-reserved annular channel 310, in which an operating ring 311 is hinged. The side of the operating ring 311 facing the bottom cover 300 has a protrusion 313, which facilitates the rotation of the operating ring 311. The end of the linkage block 307 facing the operating ring 311 is fixedly connected to an arc disk 309. The arc disk 309 is semi-circular in shape, which is convenient to be squeezed by the operating ring 311 to drive the linkage block 307 to extend and retract. The side of the operating ring 311 facing the linkage block 307 has a recessed channel 312. When the recessed channel 312 and the arc disk 309 are aligned, the elastic element 308 is compressed. When the recessed channel 312 and the arc disk 309 are misaligned, the elastic element 308 is extended.

[0044] This implementation will achieve the following:

[0045] During assembly, the solid hydrogen storage bottle 200 is placed into the jacket 100, and then the bottom cover 300 is inserted into the opening of the jacket 100. The positioning component ensures precise docking between the two, avoiding subsequent relative rotation. This is a conventional design and will not be elaborated on here. During this process, the locking ball 305 and the chamfered part 1001 come into contact, causing the locking ball 305 to press the support 304. At this moment, the locking ball 305 retracts into the movable channel 301. With the bottom cover 300 fully docked, under the action of the elastic element 303 and the support 304, the locking ball 305 can partially enter the locking cavity 1003. Due to the action of the flat bearing part 3072 and the inner edge of the movable channel 301, the position of the bottom cover 300 is limited at this moment, making the overall assembly convenient and easy.

[0046] After assembly, deionized water or 30% ethylene glycol is introduced through the flow channel inlet 102. After the heat exchange liquid overflows the entire jacket 100, the heat exchange liquid is discharged through the flow channel outlet 101. After the heat exchange liquid enters the jacket 100 through the flow channel inlet 102, the flow channel baffles along the inner edge of the jacket 100 will divert the heat exchange liquid. Through the flow channel design of the heat exchange liquid, the heat exchange efficiency is higher while the heat exchange liquid is reduced, and the flow resistance is reduced.

[0047] During regular maintenance, the protrusion 313 drives the operating ring 311 to rotate. The bottom surface of the operating ring 311 presses against the arc plate 309, which in turn drives the linkage block 307 to extend and retract. The linkage block 307 causes the position of the flat bearing part 3072 to change. At this moment, the bottom end of the retaining ball 305 is not under force. The bottom cover 300 can be removed at this time. Under the action of the slightly tilted part 1002, the retaining ball 305 falls into the linkage block 307, which facilitates quick disassembly.

[0048] To better demonstrate the technical effectiveness of this solution, two sets of experimental data were tested under the following conditions:

[0049] Equipment requirements: Jacketed equipment has a hydrogen storage capacity of 1 kg and a water capacity of 3.6 L; unjacketed equipment has a hydrogen storage capacity of 1 kg and a water capacity of 25 L.

[0050] Hydrogen absorption conditions: hydrogen flow rate 360 ​​NL / min (as the hydrogen absorption rate decreases, 120 NL / min is used as the second calibration point), hydrogen absorption time 60 min, water temperature 12℃. Vacuuming operation was performed before the first hydrogen filling of both sets of equipment. The experiment was terminated when the hydrogen absorption time was 60 min. The hydrogen filling experiment was repeated five times.

[0051] Five sets of hydrogen release experiments were conducted, with each set tested under conditions based on the equipment's operating conditions. The test conditions are as follows:

[0052] 1. Hydrogen release flow rate (69 NL / min), hydrogen release circulating water temperature 55℃;

[0053] 2. Hydrogen release flow rate (46 NL / min), hydrogen release circulating water temperature 55℃;

[0054] 3. Hydrogen release flow rate (20 NL / min), hydrogen release circulating water temperature 35℃;

[0055] 4. Hydrogen release flow rate (80 NL / min), hydrogen release circulating water temperature 55℃;

[0056] 5. Hydrogen release flow rate (100 NL / min), hydrogen release circulating water temperature 55℃;

[0057] The hydrogen release experiment was terminated when the pressure (≤0.3MPa) or flow rate did not meet the usage requirements. The experimental data of this experiment were compared with the experimental data of the previous equipment without jacket under the same experimental conditions, and the following table was obtained.

[0058] ① Hydrogen charging data are as follows:

[0059] Table 1

[0060]

[0061] For the cylinder body, lightweight and high-strength aluminum alloy is preferred, while lightweight materials such as ABS and nylon are preferred for the jacket. This not only ensures the safety of the hydrogen storage cylinder but also significantly reduces its weight. The weight of the coolant is also crucial for weight reduction. Compared to traditional water tank immersion heat exchangers, the coolant weight for a 1kg hydrogen storage capacity jacketed immersion heat exchanger is only about 3.6L, which also reduces the weight of the water tank and avoids the waste of energy and time during the pre-cooling and preheating processes of solid hydrogen storage equipment.

[0062] Experimental test data shows that, in terms of hydrogen charging and discharging capacity, the liquid-cooled hydrogen storage module is more stable than the submerged hydrogen storage module, and its performance is significantly better. When the hydrogen charging flow rate is ≥360NL, the liquid-cooled hydrogen storage module can maintain a longer and more stable hydrogen charging. With a hydrogen charging time of 60 minutes, the hydrogen absorption capacity of the liquid-cooled module is increased by an average of 10% compared with the submerged water-cooled module, indicating that the cooling and heat exchange effect of the liquid-cooled module of this invention is more uniform and orderly.

[0063] ② The hydrogen release data is as follows:

[0064] Table 2

[0065]

[0066] Meanwhile, experiments were conducted to verify the hydrogen release of the liquid-cooled module and the immersion module. The data comparison shows that the hydrogen release capability of the liquid-cooled module is more stable and longer under a larger hydrogen release flow rate. The larger the hydrogen release flow rate, the more obvious the comparison effect. When the hydrogen release flow rate is ≥100NL, the hydrogen release duration of the liquid-cooled module is twice that of the immersion module.

[0067] Under the same hydrogen release flow rate, the hydrogen release power consumption of the liquid-cooled module of the present invention is only 13% of that of the immersion module. The immersion module requires 25L of heated water for hydrogen release, while the liquid-cooled module of the present invention only requires 3.6L of heated water. Furthermore, the immersion tank needs to consider issues such as tank preheating, heat dissipation, and response speed, which undoubtedly increases the initial cost. If a heat exchange medium with low specific heat capacity, such as 30% ethylene glycol, is selected, the hydrogen release power consumption will be further reduced.

Claims

1. A liquid-cooled solid-state hydrogen storage module, characterized in that: Includes a jacket (100), a solid hydrogen storage cylinder (200), and a bottom cover (300). The solid hydrogen storage cylinder (200) is disposed inside the jacket (100), and the bottom cover (300) is assembled at the end of the jacket (100); The jacket (100) is provided with a flow channel outlet (101) and a flow channel inlet (102), and a transfer channel is reserved on the jacket (100). The flow channel outlet (101) and the flow channel inlet (102) are respectively connected to the two ends of the transfer channel. A connection structure is provided between the jacket (100) and the bottom cover (300); The inner edge of the sleeve (100) facing the bottom cover (300) is milled into a chamfered part (1001), and a retaining cavity (1003) is reserved on the inner edge of the sleeve (100) near the chamfered part (1001). The inner edge of the retaining cavity (1003) near the chamfered part (1001) is milled into a slightly inclined part (1002). The connecting structure includes a support (304), a retaining bead (305), and a linkage block (307). The bottom cover (300) has a movable channel (301) milled on the side facing the jacket (100). The inner edge of the movable channel (301) has an inner support channel (302) milled on it. The retaining bead (305) is movably arranged in the movable channel (301). The inner edge of the sleeve (100) is also milled with a transverse channel (306), the linkage block (307) moves in the transverse channel (306), and an elastic element (308) is arranged between the linkage block (307) and the transverse channel (306). The linkage block (307) has an integrally formed protrusion on one end near the elastic element (308). The side of the protrusion facing the retaining bead (305) is defined as the flat bearing part (3072), and the adjacent side of the protrusion near the flat bearing part (3072) is defined as the ramp (3071). When the retaining ball (305) and the chamfered part (1001) come into contact, the retaining ball (305) presses against the support (304). At this moment, the retaining ball (305) retracts into the movable channel (301). With the bottom cover (300) fully engaged, under the action of the elastic element (303) and the support (304), the retaining ball (305) can partially enter the retaining cavity (1003). Due to the action of the retaining ball (305) on the inner edge of the flat bearing part (3072) and the movable channel (301), the position of the bottom cover (300) is limited at this moment.

2. The liquid-cooled solid-state hydrogen storage module according to claim 1, characterized in that: The support (304) extends and retracts in the inner support channel (302). An elastic element (303) is disposed between the support (304) and the inner edge of the inner support channel (302). The support (304) and the retaining bead (305) are in contact.

3. The liquid-cooled solid-state hydrogen storage module according to claim 1, characterized in that: The back of the bottom cover (300) has a pre-reserved annular channel (310), in which an operating ring (311) is hinged, and a protrusion (313) is provided on the side of the operating ring (311) facing.

4. The liquid-cooled solid-state hydrogen storage module according to claim 3, characterized in that: The linkage block (307) is fixedly connected to an arc disk (309) at one end facing the operating ring (311), and the arc disk (309) has a semi-circular shape.

5. The liquid-cooled solid-state hydrogen storage module according to claim 3, characterized in that: The operating ring (311) has a recessed channel (312) milled on the side facing the linkage block (307).

6. The liquid-cooled solid-state hydrogen storage module according to claim 1, characterized in that: A tightening bolt (314) is connected to the center of the bottom cover (300), and a drain channel (315) is provided on the side of the bottom cover (300) near the tightening bolt (314).

Images