Hydrogen cooling device for hydrogen fuel automobile

Abstract

The invention discloses a hydrogen cooling device for a hydrogen fuel automobile, and relates to the technical field of hydrogen fuel automobiles, the hydrogen cooling device comprises a hydrogen storage tank, the hydrogen storage tank is sleeved with a condensation pipe, and an airflow drainage assembly is arranged in the hydrogen storage tank; the axis direction of the driving shaft is the same as that of the hydrogen storage tank, the spoilers are arranged along the axis of the driving shaft at intervals, and mounting cavities are formed in the spoilers; according to the invention, the flow guide piece rotates and stretches in different quadrants, so that hydrogen can be effectively guided to flow, hot hydrogen and cold hydrogen are fully mixed and are in contact with the condenser pipe, and the cooling effect is improved. Initial small-amplitude elongation avoids interference on hydrogen flow, and later increase of elongation promotes hot hydrogen to promote circulation. The retraction design can prevent bottom hydrogen from being interfered, and it is ensured that hot hydrogen is not brought to the top again. By means of the design, the hydrogen temperature distribution is more uniform, and the safety and stability of hydrogen storage are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fuel vehicles, in particular to a hydrogen cooling device for a hydrogen fuel vehicle. Background Art

[0002] Hydrogen cars, as the name implies, are cars that use hydrogen as energy, converting the chemical energy generated by hydrogen reactions into mechanical energy to propel the vehicle. There are two types of hydrogen cars. One is a hydrogen internal combustion engine car that uses an internal combustion engine to burn hydrogen (usually obtained by decomposing methane or electrolyzing water) to generate power to propel the car. A hydrogen fuel cell car is a car that uses hydrogen or hydrogen-containing substances to react with oxygen in the air in a fuel cell to generate electricity to propel the motor, which in turn propels the vehicle. Among them, hydrogen fuel cells are used as a power source for hydrogen fuel cells, which are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy.

[0003] The existing Chinese patent (publication number: CN113803635B) discloses a hydrogen cooling device for a hydrogen fuel vehicle, including a hydrogen tank, a heat exchange tube is provided on the outer side of the hydrogen tank, a condenser tube is wound and installed on the outer side of the heat exchange tube, a fixing seat is movably installed on the outer side of the heat exchange tube, and a water storage tank is fixedly installed at the bottom end of the fixing seat. The hydrogen cooling device for a hydrogen fuel vehicle is provided with a slide bar installed at equal angles inside the heat exchange tube, and a slide groove is provided on the outer side of the hydrogen tank. The hydrogen tank is movably connected with the slide bar through the slide groove. When in use, the heat generated by the hydrogen tank will be transferred to the heat exchange tube, and further transferred to the condenser tube on the outer side of the heat exchange tube. At this time, it can effectively exchange heat with the condensed water inside the condenser tube, and enter the water storage tank below, and the heat of the condensed water inside the water storage tank is dissipated by the heat exchange fan, and the condensed water is effectively circulated, thereby achieving the advantage of better heat dissipation effect.

[0004] During use of the above-mentioned cooling device, a condenser is spirally wound on the outside of the hydrogen tank to circulate the condensate in the condenser, thereby cooling the hydrogen in the hydrogen tank. However, during the cooling process of the above-mentioned cooling device, since the condenser is used to cool the hydrogen in the hydrogen tank, the hydrogen close to the condenser, that is, the hydrogen that is close to the inner wall of the hydrogen tank, is cooled better during the cooling process, while the hydrogen far from the inner wall of the hydrogen tank is cooled poorly. Moreover, due to the characteristics of hydrogen (that is, the higher the temperature, the lower the density), when the temperature is high, the high-temperature hydrogen will float on the upper side of the hydrogen storage tank due to its lower density. At this time, the condenser located on the lower surface of the hydrogen storage tank will not be well utilized, which will lead to poor cooling of the hydrogen. Summary of the invention

[0005] The object of the present invention is to provide a hydrogen cooling device for a hydrogen fuel vehicle to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides a hydrogen cooling device for a hydrogen fuel vehicle, comprising a hydrogen storage tank, a condenser tube is provided on the outside of the hydrogen storage tank, and an airflow guide component is provided inside the hydrogen storage tank, including: A drive shaft is rotatably disposed in the hydrogen storage tank, and its axis direction is the same as that of the hydrogen storage tank; A plurality of spoilers are arranged at intervals along the axis of the drive shaft, the spoilers have an installation cavity inside, a through hole is provided on a side of the installation cavity away from the axis of the drive shaft, and a drive assembly is provided inside the installation cavity; The driving assembly at least comprises a rotating part rotatably arranged in the installation cavity, one end of which moves closer to or farther from the through hole when rotating; The telescopic member is slidably arranged in the installation cavity, one end of which is rotatably connected to the rotating part, and the other end passes through the through hole and is connected to the guide member. When the end of the guide member gradually rotates from the bottom of the hydrogen storage tank chamber to the top of the hydrogen storage tank chamber, the guide member and the inner wall of the hydrogen storage tank chamber gradually approach each other; when the end of the guide member gradually rotates from the top of the hydrogen storage tank chamber to the bottom of the hydrogen storage tank chamber, the guide member and the inner wall of the hydrogen storage tank chamber gradually move away from each other.

[0007] Furthermore, the rotating part includes: A connecting piece is connected in the spoiler, and a mounting plate is rotatably connected to the top of the connecting piece; There are at least two first compression springs, which are symmetrical with respect to the central axis of the connecting member, and the two ends of the first compression springs are respectively connected to the mounting plate and the inner wall of the spoiler; A telescopic member is rotatably connected to a side of the mounting plate away from the first compression spring, one end of the telescopic member extends to the outside of the spoiler and is connected to the bottom of the guide member; The liquid storage tank is connected to the side of the mounting plate away from the first compression spring and is symmetrically arranged with the telescopic member centered on the vertical axis of the connecting member. The other end of the liquid storage tank is connected to the second compression spring, and the other end of the second compression spring is connected to the inner wall of the spoiler.

[0008] Furthermore, one side of the telescopic member is also provided with an adjustment component, including: A first fixing member is connected to one side of the telescopic member, and one side of the first fixing member is connected to a second fixing member; A guide ball is rotatably connected to one side of the first fixing member, and the guide ball and the inner wall of the spoiler are in conflict with each other, one end of the guide ball is connected to a rotating shaft, and the other end of the rotating shaft is rotatably connected to the second fixing member; The torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the rotating shaft, and the other end is connected to the second fixing member.

[0009] Furthermore, the cross section of the guide member is trapezoidal, and a plurality of vents are provided on the guide member. The plurality of vents are evenly spaced and distributed in a rectangular array on a side of the guide member away from the opening.

[0010] Furthermore, one end of the driving shaft is connected to an impeller, and the position of the impeller corresponds to the air inlet of the hydrogen storage tank.

[0011] Furthermore, a mounting frame is provided outside the hydrogen storage tank, and the hydrogen storage tank is connected inside the mounting frame. A plurality of heat dissipation holes are provided on both sides of the mounting frame. The plurality of heat dissipation holes are distributed in a rectangular array, and the aperture of the heat dissipation holes gradually narrows along the air intake direction.

[0012] Furthermore, a plurality of support frames are connected to the hydrogen storage tank, and the support frames are arranged in a trapezoidal shape, and the other ends of the support frames are interconnected with the hydrogen storage tank.

[0013] Furthermore, a plurality of spoilers are disposed on the outer periphery of the driving shaft and are arranged in a spiral pattern at intervals along the axial direction of the driving shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The rotation and extension of the guide in different quadrants can effectively guide the flow of hydrogen, achieve full mixing of hot hydrogen and cold hydrogen and contact with the condenser, and improve the cooling effect. The initial small extension avoids interfering with the flow of hydrogen, and then the extension is increased to push the hot hydrogen and promote circulation. The retraction design can prevent interference with the bottom hydrogen and ensure that the hot hydrogen is not brought back to the top. This design makes the hydrogen temperature distribution more uniform, improves the safety and stability of hydrogen storage, and also provides reliable guarantee for the efficient operation of hydrogen fuel vehicles, which helps to promote the widespread application of hydrogen energy.

[0015] 2. The liquid storage tank rotates with the spoiler, and the lever principle and the change of gravity torque in different quadrants are used to realize the automatic expansion and contraction of the guide. In each quadrant, the guide plays a different role, promoting hydrogen circulation, evenly distributing hydrogen at the bottom, setting the direction for the next cycle, etc. Springs with different elastic coefficients are set to ensure that the guide retracts at a specific position to avoid interfering with the flow of hydrogen, making the hydrogen flow smoother and improving the cooling effect. Overall, the safety and stability of hydrogen storage are improved.

[0016] 3. Set the guide ball to provide limit and guidance for the telescopic part to improve its stability. When the telescopic part is extended, the torsion spring slows down its speed to avoid the guide part from extending too quickly and causing the hydrogen flow to be chaotic, making the hydrogen flow more stable and reducing pressure fluctuations. When retracting, the torsion spring pushes the guide ball to speed up the telescopic part, ensuring that the guide part adjusts its position in time during the quadrant conversion, avoiding the chaos of hydrogen flow, ensuring the smooth downward flow of hot hydrogen, and improving the circulation and heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the hydrogen storage tank and the mounting frame in the present invention; Figure 3 This is a schematic diagram of the internal connection structure of the hydrogen storage tank in the present invention; Figure 4 It is a schematic diagram of the side view structure of the connection between the stirring shaft and the spoiler in the present invention; Figure 5 It is a front view structural diagram of the connection between the stirring shaft and the spoiler in the present invention; Figure 6 Schematic diagram of the internal structure of the spoiler block in the present invention; Figure 7 It is a front view structural diagram of the connection between the flow guide member and the telescopic member in the present invention; Figure 8 It is a schematic diagram of the side view structure of the connection between the flow guide member and the telescopic member in the present invention; Fig. 9 For the present invention Figure 6 Schematic diagram of the connection structure at A in the middle; Fig.10 For invention Figure 8 Schematic diagram of the connection structure at B in the figure.

[0018] In the figure: 1. hydrogen storage tank; 200. air flow diversion assembly; 201. drive shaft; 202. spoiler; 203. guide member; 204. condenser; 205. condensate storage box; 300. drive assembly; 301. connector; 302. mounting plate; 303. first compression spring; 304. telescopic member; 305. liquid storage box; 306. second compression spring; 400. adjustment assembly; 401. first fixing member; 402. guide ball; 403. second fixing member; 404. rotating shaft; 405. torsion spring; 5. vent; 6. impeller; 7. mounting bracket; 8. heat dissipation hole; 9. support bracket; 10. mounting member. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] When hydrogen is added to the hydrogen storage tank 1 of the hydrogen fuel vehicle, hydrogen enters the hydrogen storage tank 1 from the storage facility of the hydrogen filling station at a high flow rate and pressure. In this process, the compression energy of the hydrogen is converted into heat energy, causing the temperature in the hydrogen storage tank 1 to rise rapidly. If cooling is not performed, the pressure in the hydrogen storage tank 1 may rise sharply, exceeding the safety design range, and may even damage the sealing structure and internal components of the hydrogen storage tank. The existing heat dissipation method often cools the hydrogen in the hydrogen storage tank 1 by wrapping the condenser 204 around the hydrogen storage tank 1. However, in the heat dissipation process, the hydrogen close to the condenser 204, that is, the hydrogen attached to the inner wall of the hydrogen storage tank 1, often has a better cooling effect, while the hydrogen away from the inner wall of the hydrogen storage tank 1 has a poor cooling effect. In addition, due to the characteristics of hydrogen, that is, the higher the temperature, the lower the density, when the temperature is high, the high-temperature hydrogen will float on the upper side of the hydrogen storage tank 1 due to its low density. At this time, the condenser 204 located on the lower surface of the hydrogen storage tank 1 will not be well utilized, which will lead to poor cooling of the hydrogen. For this reason, the present invention is designed; See also Figure 1-10 The present invention provides a technical solution: including a hydrogen storage tank 1, the outer sleeve of the hydrogen storage tank 1 is provided with a condenser 204, and the bottom of the hydrogen storage tank 1 is connected to a condensate storage tank 205, the input end and the output end of the condenser 204 are respectively connected to the two sides of the condensate storage tank 205, wherein one side of the hydrogen storage tank 1 is provided with a water pump for circulating the condensate in the condenser 204. In the present invention, the hydrogen is mainly cooled when the hydrogen vehicle is refueled, and the cooling method of the above-mentioned condenser 204 is a prior art, so no further explanation is given here.

[0021] The overall shape of the hydrogen storage tank 1 is similar to a cylinder and is designed to be horizontal.

[0022] In order to achieve the effect of uniform cooling of hydrogen, the present invention is implemented through the following technical solutions: A hydrogen cooling device for a hydrogen fuel vehicle includes: a hydrogen storage tank 1 is provided with an airflow guide component 200, including: The drive shaft 201 is rotatably disposed in the hydrogen storage tank 1, and its axial direction is the same as the axial direction of the hydrogen storage tank 1. In this embodiment, the drive shaft 201 can be rotatably connected in the hydrogen storage tank 1 through a bearing, and corresponding sealing measures can be provided at the rotating position; A plurality of spoilers 202 are arranged at intervals along the axis of the driving shaft 201. The spoilers 202 have an installation cavity inside. A through hole is provided on one side of the installation cavity away from the axis of the driving shaft 201. A driving assembly 300 is provided inside the installation cavity. The driving assembly 300 at least includes a rotating part rotatably disposed in the installation cavity, one end of which moves closer to or farther from the through hole when rotating; The telescopic member 304 is slidably arranged in the installation cavity, one end of which is rotatably connected to the rotating part, and the other end passes through the through hole and is connected to the guide member 203. When the end of the guide member 203 gradually rotates from the bottom of the chamber of the hydrogen storage tank 1 to the top of the chamber of the hydrogen storage tank 1, the guide member 203 gradually approaches the inner wall of the chamber of the hydrogen storage tank 1; when the end of the guide member 203 gradually rotates from the top of the chamber of the hydrogen storage tank 1 to the bottom of the chamber of the hydrogen storage tank 1, the guide member 203 gradually moves away from the inner wall of the chamber of the hydrogen storage tank 1.

[0023] It should be noted that during the refueling process, the hydrogen storage tank 1 is in a certain pressure state. If the driving shaft 201 rotates too fast, it will cause a violent flow of hydrogen, resulting in a large pressure fluctuation in the hydrogen storage tank 1. Such pressure fluctuations will not only affect the stability of hydrogen storage, but may also threaten the structural safety of the hydrogen storage tank 1. For this reason, in actual production and use, a speed reduction structure such as a reducer or a reduction box may be provided at the driving end of the driving shaft 201 to control the driving shaft 201 to rotate at a more moderate speed.

[0024] During the specific implementation process, first, during the process of refueling the hydrogen storage tank 1, the transported hydrogen will drive the drive shaft 201 to rotate. For the convenience of understanding, the cross section of the hydrogen storage tank 1 is taken as the reference plane, and this reference plane is divided into the first, second, third and fourth quadrants for further detailed description. During this process, the guide member 203 rotates counterclockwise; When the flow guide 203 is in the initial state of the first quadrant, that is, 0°-90°; The guide member 203 starts to rotate upward from a horizontal position. At this time, the newly added hydrogen is affected by the flow rate and pressure during gas filling, and its temperature will increase. After the temperature of hydrogen increases, its density will decrease, and its own buoyancy will increase. At this time, more hydrogen with higher temperature will be concentrated in the upper part of the hydrogen storage tank 1, while hydrogen with lower temperature will be affected by its density and located in the lower part of the hydrogen storage tank 1. For this reason, the upper temperature of the hydrogen storage tank 1 is higher and the lower temperature is lower. At this time, it is necessary to "transport" the hydrogen with higher temperature above the hydrogen storage tank 1 to the bottom of the hydrogen storage tank 1. For this reason, the guide member 203 can be gradually extended and reach the longest distance when it is in a vertical position to transport the hydrogen with the relatively highest temperature. In this process, the guide member 203 gradually extends. The initial small extension can avoid excessive interference with the flow of hydrogen. As the extension amount increases as it approaches the vertical position, it can enhance the scooping and pushing effect on the upper hydrogen, so that the hot hydrogen is fully mixed with the cold hydrogen, which helps to improve the cooling effect. When the flow guide 203 is in the initial state of the second quadrant, that is, 90°-180°; The guide member 203 continues to rotate upward and passes the vertical position and gradually retracts after passing the vertical position. At this time, the temperature of the hydrogen in the upper part of the hydrogen storage tank 1 is still relatively high due to the continuous influence of heat accumulation and gasification. The effect of gravity will cause the hydrogen to tend to flow downward, but the hydrogen is affected by its own buoyancy, that is, the temperature is relatively high and the density is relatively low. The hydrogen will float on the upper part of the hydrogen storage tank 1, which may hinder its smooth downward flow. At this time, the guide member 203 maintains a large elongation and can continuously scoop and push the hot hydrogen in the upper part of the hydrogen storage tank 1 to flow downward, thereby promoting the circulation of hydrogen. In this way, the hot hydrogen can fully contact the condenser 204 at the bottom and surrounding of the hydrogen storage tank 1, thereby accelerating heat transfer and dissipation. The continuous pushing action can prevent the hot hydrogen from accumulating on the top of the hydrogen storage tank 1, ensuring that the temperature of the hydrogen in the entire hydrogen storage tank 1 drops more evenly, and the gradually retracted guide member 203 can also facilitate the transfer of some relatively high-temperature hydrogen that has not been heat-exchanged in the middle and upper part to the bottom of the hydrogen storage tank 1 for better heat exchange during the rotation process; When the guide member 203 is in the initial state of the third quadrant, that is, 180°-270°; The guide 203 rotates downward from a horizontal position. At this time, the guide 203 gradually retracts, and the retraction amount gradually increases, and the maximum retraction amount is completed when it reaches 270°. In this process, when the guide 203 rotates downward from a horizontal position, its main function is to guide the hydrogen to continue to flow downward, promote the contact between the hot hydrogen and the cold hydrogen and the condenser 204, so as to achieve a better cooling effect. If the guide 203 does not gradually retract, but remains in a fixed state or an extended state, then during its rotation, some hot hydrogen that flows downward under the influence of gravity may float on the upper part of the hydrogen storage tank 1, but it will still sink to the lower part under the influence of gravity, but it will produce a reverse force at a slower sinking speed than the cold hydrogen, so that part of the hydrogen changes its flow direction, and it is even possible to bring the hot hydrogen that has been transported to the bottom back to the top. When the guide 203 gradually retracts, it can reduce the interference with the bottom hydrogen, so that the bottom hydrogen can be more evenly distributed at the bottom of the hydrogen storage tank 1 and fully contact with the cooling device. This ensures that the hydrogen at the bottom is effectively cooled and will not be brought back to the top, affecting the overall cooling effect; When the flow guide 203 is in the initial state of the fourth quadrant, that is, 270°-360°; The guide member 203 begins to rotate upward and gradually approaches a horizontal position. As the guide member 203 gradually extends, it begins to set the direction for the next circulation of hydrogen in the storage tank, while facilitating the transportation of the cold hydrogen in the hydrogen storage tank 1 to the top of the hydrogen storage tank 1, thereby improving the overall cooling efficiency of the hydrogen.

[0025] Specifically, in order to facilitate the extension and retraction of the guide member 203, it is necessary to further disclose and explain the structure of the rotating part. Figure 6 and Fig. 9 ; The rotating part includes: A connecting member 301 is connected inside the spoiler 202, and a mounting plate 302 is rotatably connected to the top of the connecting member 301; There are at least two first compression springs 303, which are symmetrical with each other around the central axis of the connecting member 301. The two ends of the first compression spring 303 are respectively connected to the inner wall of the mounting plate 302 and the spoiler 202. In the initial state, the first compression spring 303 is in a naturally extended state, providing a certain support force for the mounting plate 302; The telescopic member 304 is rotatably connected to a side of the mounting plate 302 away from the first compression spring 303, and one end of the telescopic member 304 extends to the outside of the spoiler 202 and is connected to the bottom of the guide member 203; The liquid storage tank 305 is connected to the side of the mounting plate 302 away from the first compression spring 303 and is symmetrically arranged with the telescopic member 304 with the vertical axis of the connecting member 301 as the center. The other end of the liquid storage tank 305 is connected to the second compression spring 306, and the other end of the second compression spring 306 is connected to the inner wall of the spoiler 202.

[0026] It should be noted that the liquid storage tank 305 stores liquid, and as the flow guide 203 rotates in different quadrants, the gravity torque of the liquid storage tank 305 changes; The elastic coefficient of the second compression spring 306 is greater than that of the first compression spring 303 In specific implementation, when the spoiler 202 rotates with the drive shaft 201, the entire rotating part also starts to operate. Since the liquid storage tank 305 contains liquid, as the liquid storage tank 305 rotates counterclockwise to different quadrants, the position and distribution of the liquid inside it will change. According to the principle of lever, the connection point between the mounting plate 302 and the connecting member 301 is used as the fulcrum, and the liquid storage tank 305 and the telescopic member 304 are respectively located on both sides of the fulcrum. When the liquid storage tank 305 rotates counterclockwise to different positions, the torque generated by its gravity will change; The following is an analysis of each quadrant: First quadrant: In this quadrant, as the liquid storage tank 305 rotates, its gravity moment gradually increases, generating a downward force on the mounting plate 302. Due to the gravity of the liquid storage tank 305, the mounting plate 302 begins to tilt, compressing the first compression spring 303. At the same time, the tilt of the mounting plate 302 drives the telescopic member 304 to extend outward, causing the flow guide member 203 to gradually extend; Second quadrant: the liquid storage tank 305 continues to rotate counterclockwise, and the gravity torque still generates a downward force on the mounting plate 302. At this time, the guide member 203 can continue to scoop up and push the hot hydrogen on the upper part of the hydrogen storage tank 1 to flow downward, promoting the circulation of hydrogen; The third quadrant: As the liquid storage tank 305 rotates to this quadrant, its gravity moment gradually decreases and changes in the opposite direction. At this time, the mounting plate 302 begins to tilt in the opposite direction under the action of the spring and the influence of the gravity change of the liquid storage tank 305, which causes the telescopic member 304 to gradually retract, and the guide member 203 also retracts. The retraction of the guide member 203 can reduce the interference with the bottom hydrogen, so that the bottom hydrogen can be more evenly distributed at the bottom of the hydrogen storage tank 1; The fourth quadrant: the liquid storage tank 305 continues to rotate and approaches the horizontal position. At this time, the gravity moment of the liquid storage tank 305 changes again compared with the third quadrant, and its gravity moment gradually increases and changes in the opposite direction, causing the guide member 203 to gradually extend, and it begins to set the direction for the next circulation of hydrogen in the hydrogen storage tank 1, and at the same time facilitates the delivery of cold hydrogen in the hydrogen storage tank 1 to the top of the hydrogen storage tank 1, thereby improving the overall cooling efficiency of the hydrogen; The elastic coefficient of the second compression spring 306 is greater than the elastic coefficient of the first compression spring 303. When the spoiler 202 rotates to the horizontal position, the gravity acting on the liquid storage tank 305 is different from that in other positions. At this time, the larger elastic force of the second compression spring 306 takes effect, driving the liquid storage tank 305 to move toward the inner wall of the movable spoiler 202. The movement of the liquid storage tank 305 will affect the position of the mounting plate 302, and then drive the guide member 203 to retract through the telescopic member 304. In this way, the guide member 203 can be prevented from interfering with the rising and falling hydrogen, ensuring that the flow of hydrogen in the hydrogen storage tank 1 is smoother and the cooling effect is improved.

[0027] Please continue to refer to Figure 6 , Fig. 9 and Fig.10 , in order to facilitate the control of the expansion and contraction rate of the flow guide 203: An adjustment assembly 400 is also provided on one side of the telescopic member 304, including: A first fixing member 401 is connected to one side of the telescopic member 304, and a second fixing member 403 is connected to one side of the first fixing member 401; A guide ball 402 is rotatably connected to one side of the first fixing member 401, and the guide ball 402 and the inner wall of the spoiler 202 are in conflict with each other. One end of the guide ball 402 is connected to a rotating shaft 404, and the other end of the rotating shaft 404 is rotatably connected to the second fixing member 403; The torsion spring 405 is sleeved on the rotating shaft 404 , one end of the torsion spring 405 is connected to the rotating shaft 404 , and the other end is connected to the second fixing member 403 .

[0028] Preferably, a groove may be provided on the inner wall of the spoiler 202 so that the guide ball 402 is slidably connected in the groove.

[0029] In a specific implementation, the guide ball 402 provided first can provide a limiting and guiding effect on the movement of the telescopic member 304, further improving the stability of the telescopic member 304 during the telescopic sliding process; Secondly, when the telescopic member 304 extends outward, the friction force on the guide ball 402 increases, and the torsion spring 405 is compressed or twisted to generate a reverse force transmitted to the telescopic member 304, slowing down its extension speed. This can prevent the guide member 203 from extending too quickly. If the guide member 203 extends too quickly, it may cause a large change in the hydrogen flow in the hydrogen storage tank 1, causing local turbulence or unstable flow conditions. Through this delaying effect, the flow changes of hydrogen are smoother, reducing local pressure fluctuations and chaotic flows that may be caused by sudden changes, thereby making the entire hydrogen cooling process more stable; When the telescopic member 304 needs to retract, the torsion spring 405 gradually returns to its original state, generating a pushing force on the guide ball 402, and this force is transmitted to the telescopic member 304 through the first fixing member 401, accelerating its retraction speed. In the transition from the second quadrant to the third quadrant, the rapidly retracted telescopic member 304 can enable the guide member 203 to adjust its position in time, avoiding confusion in the flow of hydrogen during the conversion process between the two quadrants. If the telescopic member 304 retracts slowly, the hot hydrogen may be blocked at the stage where it should flow downward, affecting the circulation of hydrogen and the heat exchange efficiency.

[0030] Please refer to Figure 6 and Figure 7 The cross section of the guide member 203 is trapezoidal, and a plurality of vent holes 5 are provided on the guide member 203. The plurality of vent holes 5 are evenly spaced and distributed in a rectangular array on a side of the guide member 203 away from the opening.

[0031] Preferably, the guide member 203 may also be configured to be semicircular. During the stirring process, the semicircular guide member 203 can promote the flow of hydrogen more smoothly and reduce resistance.

[0032] In specific use, the trapezoidal cross section enables the guide member 203 to better guide the flow of hydrogen when rotating and extending in the hydrogen storage tank 1. Its unique shape can reduce fluid resistance, allowing hydrogen to flow more smoothly along the surface of the guide member 203, thereby improving the flow efficiency of hydrogen.

[0033] Please refer to Figure 3 One end of the driving shaft 201 is connected to an impeller 6 , and the position of the impeller 6 corresponds to the air inlet of the hydrogen storage tank 1 .

[0034] When used specifically, first, when adding gas, the addition of hydrogen can drive the impeller 6 to rotate, and the impeller 6 will drive the drive shaft 201 to rotate during the rotation process. At the same time, the impeller 6 is located at the air inlet of the hydrogen storage tank 1. When the hydrogen enters the hydrogen storage tank 1, the impeller 6 starts to rotate under the action of the airflow. The rotation of the impeller 6 can accelerate the flow speed of the hydrogen, so that the hydrogen enters the storage tank faster.

[0035] For details, please refer to Figures 1 to 3 A mounting frame 7 is provided outside the hydrogen storage tank 1, and the hydrogen storage tank 1 is connected inside the mounting frame 7. A plurality of heat dissipation holes 8 are provided on both sides of the mounting frame 7. The plurality of heat dissipation holes 8 are distributed in a rectangular array, and the aperture of the heat dissipation holes 8 gradually narrows along the air intake direction.

[0036] It should be further explained that a plurality of mounting parts 10 are connected to the mounting frame 7, which facilitates the mounting frame 7 to be installed on the hydrogen vehicle. In the actual production process, the mounting frame 7 can also be fixed by welding. The fixing method is not unique as long as the mounting frame 7 can be stably installed on the vehicle.

[0037] In specific implementation, the mounting frame 7 facilitates the installation of the hydrogen storage tank 1, and the multiple heat dissipation holes 8 on both sides of the mounting frame 7 are distributed in a rectangular array, providing an effective heat dissipation path for the hydrogen storage tank 1. The aperture of the heat dissipation hole 8 gradually narrows along the air intake direction, increasing the flow rate of air entering the heat dissipation hole 8. According to the principles of fluid mechanics, when a fluid passes through a gradually narrowing channel, the flow rate increases. This allows more cold air to quickly flow into the heat dissipation hole 8, perform heat exchange with the hydrogen storage tank 1, and improve the heat dissipation efficiency. The design of the gradually narrowing aperture of the heat dissipation hole 8 can also reduce dust and impurities from entering the hydrogen storage tank 1.

[0038] Please refer to Figure 3 A plurality of support frames 9 are connected to the hydrogen storage tank 1 . The support frames 9 are arranged in a trapezoidal shape, and the other ends of the support frames 9 are interconnected with the hydrogen storage tank 1 .

[0039] During specific use, the support frame 9 is provided to facilitate supporting the hydrogen storage tank 1. Meanwhile, during actual use, the support frame 9 can be made of a heat dissipation material with good thermal conductivity to further facilitate heat dissipation.

[0040] Please refer to Figure 4 and Figure 5 A plurality of spoilers 202 are disposed on the outer periphery of the driving shaft 201 and are arranged in a spiral pattern along the axial direction of the driving shaft 201 .

[0041] In specific implementation, the spiral arrangement of the spoiler 202 can guide the flow of hydrogen. The flow of hydrogen in the hydrogen storage tank 1 is no longer a simple linear motion, but flows along the spiral track of the spoiler 202. This spiral flow path increases the residence time of hydrogen in the hydrogen storage tank 1, so that hydrogen has more opportunities to contact the condenser 204, improving the effect of heat exchange, and at the same time, the spaced arrangement of multiple spoilers 202 can reduce the local dead zone in the flow of hydrogen. At the same time, multiple spoilers 202 are arranged spirally and spaced on the periphery of the drive shaft 201, which can disturb the hydrogen at different positions and angles.

[0042] Working principle: First, during the process of refueling the hydrogen storage tank 1, the transported hydrogen will drive the drive shaft 201 to rotate. For the convenience of understanding, the cross section of the hydrogen storage tank 1 is taken as the reference plane, and this reference plane is divided into the first, second, third and fourth quadrants for further detailed description. The guide member 203 rotates counterclockwise; When the flow guide 203 is in the initial state of the first quadrant, that is, 0°-90°; The guide member 203 starts to rotate upward from a horizontal position. At this time, the newly added hydrogen is affected by the flow rate and pressure during gas filling, and its temperature will increase. After the temperature of hydrogen increases, its density will decrease, and its own buoyancy will increase. At this time, more hydrogen with higher temperature will be concentrated in the upper part of the hydrogen storage tank 1, while hydrogen with lower temperature will be affected by its density and located in the lower part of the hydrogen storage tank 1. For this reason, the upper temperature of the hydrogen storage tank 1 is higher and the lower temperature is lower. At this time, it is necessary to "transport" the hydrogen with higher temperature above the hydrogen storage tank 1 to the bottom of the hydrogen storage tank 1. For this reason, the guide member 203 can be gradually extended and reach the longest distance when it is in a vertical position to transport the hydrogen with the relatively highest temperature. In this process, the guide member 203 gradually extends. The initial small extension can avoid excessive interference with the flow of hydrogen. As the extension amount increases as it approaches the vertical position, it can enhance the scooping and pushing effect on the upper hydrogen, so that the hot hydrogen is fully mixed with the cold hydrogen, which helps to improve the cooling effect. When the flow guide 203 is in the initial state of the second quadrant, that is, 90°-180°; The guide member 203 continues to rotate upward and passes the vertical position and gradually retracts after passing the vertical position. At this time, the temperature of the hydrogen in the upper part of the hydrogen storage tank 1 is still relatively high due to the continuous influence of heat accumulation and gasification. The effect of gravity will cause the hydrogen to tend to flow downward, but the hydrogen is affected by its own buoyancy, that is, the temperature is relatively high and the density is relatively low. The hydrogen will float on the upper part of the hydrogen storage tank 1, which may hinder its smooth downward flow. At this time, the guide member 203 maintains a large elongation and can continuously scoop and push the hot hydrogen in the upper part of the hydrogen storage tank 1 to flow downward, thereby promoting the circulation of hydrogen. In this way, the hot hydrogen can fully contact the condenser 204 at the bottom and surrounding of the hydrogen storage tank 1, thereby accelerating heat transfer and dissipation. The continuous pushing action can prevent the hot hydrogen from accumulating on the top of the hydrogen storage tank 1, ensuring that the temperature of the hydrogen in the entire hydrogen storage tank 1 drops more evenly, and the gradually retracted guide member 203 can also facilitate the transfer of some relatively high-temperature hydrogen that has not been heat-exchanged in the middle and upper part to the bottom of the hydrogen storage tank 1 for better heat exchange during the rotation process; When the guide member 203 is in the initial state of the third quadrant, that is, 180°-270°; The guide 203 rotates downward from a horizontal position. At this time, the guide 203 gradually retracts, and the retraction amount gradually increases, and the maximum retraction amount is completed when it reaches 270°. In this process, when the guide 203 rotates downward from a horizontal position, its main function is to guide the hydrogen to continue to flow downward, promote the contact between the hot hydrogen and the cold hydrogen and the condenser 204, so as to achieve a better cooling effect. If the guide 203 does not gradually retract, but remains in a fixed state or an extended state, then during its rotation, some hot hydrogen that flows downward under the influence of gravity may float on the upper part of the hydrogen storage tank 1, but it will still sink to the lower part under the influence of gravity, but it will produce a reverse force at a slower sinking speed than the cold hydrogen, so that part of the hydrogen changes its flow direction, and it is even possible to bring the hot hydrogen that has been transported to the bottom back to the top. When the guide 203 gradually retracts, it can reduce the interference with the bottom hydrogen, so that the bottom hydrogen can be more evenly distributed at the bottom of the hydrogen storage tank 1 and fully contact with the cooling device. This ensures that the hydrogen at the bottom is effectively cooled and will not be brought back to the top, affecting the overall cooling effect; When the spoiler 202 rotates with the drive shaft 201, the entire rotating part also starts to operate. Since the liquid storage tank 305 contains liquid, as the liquid storage tank 305 rotates counterclockwise to different quadrants, the position and distribution of the liquid inside it will change. According to the principle of lever, the connection point between the mounting plate 302 and the connecting member 301 is used as the fulcrum, and the liquid storage tank 305 and the telescopic member 304 are respectively located on both sides of the fulcrum. When the liquid storage tank 305 rotates counterclockwise to different positions, the torque generated by its gravity will change; The following is an analysis of each quadrant: First quadrant: In this quadrant, as the liquid storage tank 305 rotates, its gravity moment gradually increases, generating a downward force on the mounting plate 302. Due to the gravity of the liquid storage tank 305, the mounting plate 302 begins to tilt, compressing the first compression spring 303. At the same time, the tilt of the mounting plate 302 drives the telescopic member 304 to extend outward, causing the flow guide member 203 to gradually extend; Second quadrant: the liquid storage tank 305 continues to rotate counterclockwise, and the gravity torque still generates a downward force on the mounting plate 302. At this time, the guide member 203 can continue to scoop up and push the hot hydrogen on the upper part of the hydrogen storage tank 1 to flow downward, promoting the circulation of hydrogen; The third quadrant: As the liquid storage tank 305 rotates to this quadrant, its gravity moment gradually decreases and changes in the opposite direction. At this time, the mounting plate 302 begins to tilt in the opposite direction under the action of the spring and the influence of the gravity change of the liquid storage tank 305, which causes the telescopic member 304 to gradually retract, and the guide member 203 also retracts. The retraction of the guide member 203 can reduce the interference with the bottom hydrogen, so that the bottom hydrogen can be more evenly distributed at the bottom of the hydrogen storage tank 1; The fourth quadrant: the liquid storage tank 305 continues to rotate and approaches the horizontal position. At this time, the gravity moment of the liquid storage tank 305 changes again compared with the third quadrant, and its gravity moment gradually increases and changes in the opposite direction, causing the guide member 203 to gradually extend, and it begins to set the direction for the next circulation of hydrogen in the hydrogen storage tank 1, and at the same time facilitates the delivery of cold hydrogen in the hydrogen storage tank 1 to the top of the hydrogen storage tank 1, thereby improving the overall cooling efficiency of the hydrogen; When the flow guide 203 is in the initial state of the fourth quadrant, that is, 270°-360°; The guide member 203 begins to rotate upward and gradually approaches a horizontal position. As the guide member 203 gradually extends, it begins to set the direction for the next circulation of hydrogen in the storage tank, and at the same time facilitates the delivery of cold hydrogen from the hydrogen storage tank 1 to the top of the hydrogen storage tank 1, thereby improving the overall cooling efficiency of the hydrogen. The elastic coefficient of the second compression spring 306 is greater than that of the first compression spring 303. When the spoiler 202 rotates to the horizontal position, the gravity acting on the liquid storage tank 305 is different from that at other positions. At this time, the larger elastic force of the second compression spring 306 takes effect, driving the liquid storage tank 305 to move toward the inner wall of the movable spoiler 202. The movement of the liquid storage tank 305 will affect the position of the mounting plate 302, and then drive the guide member 203 to retract through the telescopic member 304. In this way, the guide member 203 can be prevented from interfering with the rising and falling hydrogen, ensuring that the flow of hydrogen in the hydrogen storage tank 1 is smoother and the cooling effect is improved; The guide ball 402 can provide a limiting and guiding effect on the movement of the telescopic member 304, further improving the stability of the telescopic member 304 during the telescopic sliding process; Secondly, when the telescopic member 304 extends outward, the friction force on the guide ball 402 increases, and the torsion spring 405 is compressed or twisted to generate a reverse force transmitted to the telescopic member 304, slowing down its extension speed. This can prevent the guide member 203 from extending too quickly. If the guide member 203 extends too quickly, it may cause a large change in the hydrogen flow in the hydrogen storage tank 1, causing local turbulence or unstable flow conditions. Through this delaying effect, the flow changes of hydrogen are smoother, reducing local pressure fluctuations and chaotic flows that may be caused by sudden changes, thereby making the entire hydrogen cooling process more stable; When the telescopic member 304 needs to retract, the torsion spring 405 gradually returns to its original state, generating a pushing force on the guide ball 402, and this force is transmitted to the telescopic member 304 through the first fixing member 401, accelerating its retraction speed. In the transition from the second quadrant to the third quadrant, the rapidly retracted telescopic member 304 can enable the guide member 203 to adjust its position in time, avoiding confusion in the flow of hydrogen during the conversion process between the two quadrants. If the telescopic member 304 retracts slowly, the hot hydrogen may be blocked at the stage where it should flow downward, affecting the circulation of hydrogen and the heat exchange efficiency.

Claims

1. A hydrogen cooling device for a hydrogen fuel vehicle, comprising a hydrogen storage tank (1), wherein the hydrogen storage tank (1) is provided with a condenser tube (204) on its exterior, characterized in that: An airflow guide assembly (200) is provided inside the hydrogen storage tank (1), comprising: A drive shaft (201) is rotatably disposed in the hydrogen storage tank (1), and the axial direction of the drive shaft (201) is the same as the axial direction of the hydrogen storage tank (1); A plurality of spoilers (202) are arranged at intervals along the axis of the drive shaft (201); a mounting cavity is provided inside the spoiler (202); a through hole is provided on a side of the mounting cavity away from the axis of the drive shaft (201); a drive assembly (300) is provided inside the mounting cavity; The driving assembly (300) comprises at least a rotating part rotatably arranged in the installation cavity, one end of which moves closer to or farther from the through hole when rotating; The telescopic member (304) is slidably disposed in the installation cavity, one end of which is rotatably connected to the rotating part, and the other end of which passes through the through hole and is connected to the guide member (203). When the end of the guide member (203) gradually rotates from the bottom of the chamber of the hydrogen storage tank (1) to the top of the chamber of the hydrogen storage tank (1), the guide member (203) and the inner wall of the chamber of the hydrogen storage tank (1) gradually approach each other; when the end of the guide member (203) gradually rotates from the top of the chamber of the hydrogen storage tank (1) to the bottom of the chamber of the hydrogen storage tank (1), the guide member (203) and the inner wall of the chamber of the hydrogen storage tank (1) gradually move away from each other.

2. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 1, characterized in that: The rotating part includes: A connecting member (301) is connected inside the spoiler (202), and the top of the connecting member (301) is rotatably connected to a mounting plate (302); There are at least two first compression springs (303) that are symmetrical with each other with the central axis of the connecting member (301) as the center, and two ends of the first compression spring (303) are respectively connected to the inner wall of the mounting plate (302) and the spoiler (202); A telescopic member (304) is rotatably connected to a side of the mounting plate (302) away from the first compression spring (303), one end of the telescopic member (304) extending to the outside of the spoiler (202) and connected to the bottom of the flow guide (203); The liquid storage tank (305) is connected to a side of the mounting plate (302) away from the first compression spring (303), and is symmetrically arranged with the telescopic member (304) with the vertical axis of the connecting member (301) as the center. The other end of the liquid storage tank (305) is connected to the second compression spring (306), and the other end of the second compression spring (306) is connected to the inner wall of the spoiler (202).

3. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 2, characterized in that: An adjustment component (400) is also provided on one side of the telescopic member (304), comprising: A first fixing member (401) is connected to one side of the telescopic member (304); one side of the first fixing member (401) is connected to a second fixing member (403); A guide ball (402) is rotatably connected to one side of the first fixing member (401), and the guide ball (402) and the inner wall of the spoiler (202) are in contact with each other. One end of the guide ball (402) is connected to a rotating shaft (404), and the other end of the rotating shaft (404) is rotatably connected to the second fixing member (403); The torsion spring (405) is sleeved on the rotating shaft (404), one end of the torsion spring (405) is connected to the rotating shaft (404), and the other end is connected to the second fixing member (403).

4. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 1, characterized in that: The cross section of the flow guide (203) is arranged in a trapezoidal shape, and a plurality of vent holes (5) are provided on the flow guide (203). The plurality of vent holes (5) are distributed in a rectangular array at equal intervals on a side of the flow guide (203) away from the opening.

5. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 1, characterized in that: One end of the driving shaft (201) is connected to an impeller (6), and the position of the impeller (6) corresponds to the air inlet of the hydrogen storage tank (1).

6. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 1, characterized in that: A mounting frame (7) is arranged outside the hydrogen storage tank (1), the hydrogen storage tank (1) is connected inside the mounting frame (7), a plurality of heat dissipation holes (8) are provided on both sides of the mounting frame (7), the plurality of heat dissipation holes (8) are distributed in a rectangular array, and the apertures of the heat dissipation holes (8) gradually narrow along the air intake direction.

7. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 1, characterized in that: A plurality of support frames (9) are connected to the hydrogen storage tank (1); the support frames (9) are arranged in a trapezoidal shape, and the other ends of the support frames (9) are interconnected with the hydrogen storage tank (1).

8. A hydrogen cooling device for a hydrogen fuel vehicle as claimed in claim 1, characterized in that: A plurality of spoilers (202) are arranged on the outer periphery of the drive shaft (201) and are arranged in a spiral arrangement along the axial direction of the drive shaft (201).

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