Liquid hydrogen container for automobile

Abstract

The utility model provides a liquid hydrogen container for an automobile, and relates to the technical field of clean energy storage. The liquid hydrogen container for the automobile comprises a low-temperature storage container, an annular fixing frame, an elastic piece and a base, the annular fixing frame is arranged on the outer side of the low-temperature storage container in a sleeving manner; the elastic sheet is arranged between the annular fixing frame and the base; the top of the elastic piece is connected with the annular fixing frame, and the bottom of the elastic piece is connected with the base. The annular fixing frame can stably fix the low-temperature storage container and prevent the low-temperature storage container from moving or being affected by unnecessary vibration in the transportation process. The elastic piece is designed to absorb vibration and impact force in the running process of the vehicle, and the low-temperature storage container is protected against damage.

Description

Technical Field

[0001] This utility model relates to the field of clean energy storage technology, and in particular to a liquid hydrogen container for automobiles. Background Technology

[0002] With increasing global demand for clean energy and growing environmental awareness, hydrogen fuel cell vehicles have garnered widespread attention as a zero-emission mode of transportation. Liquid hydrogen, as one of the primary fuels for hydrogen fuel cells, faces numerous challenges in its storage and transportation. Especially in the mobile environment of a vehicle, ensuring the safe and efficient storage of liquid hydrogen has become a key technological hurdle. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to propose an improved liquid hydrogen container for automobiles, which aims to significantly improve the shock absorption performance, structural stability and ease of maintenance of the entire system by optimizing the components and their interconnections, thereby providing a strong guarantee for the safe operation of hydrogen fuel cell vehicles.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A liquid hydrogen container for automobiles includes: a cryogenic storage container, an annular retainer, a spring clip, and a base;

[0006] The annular fixing frame is sleeved on the outside of the low-temperature storage container;

[0007] The spring is disposed between the annular fixing frame and the base; the top of the spring is connected to the annular fixing frame, and the bottom of the spring is connected to the base.

[0008] Optionally, an annular groove is provided on the outside of the cryogenic storage container;

[0009] The annular fixing bracket is engaged within the annular groove.

[0010] Optionally, the annular fixing frame includes a frame and a damping ring;

[0011] The inner side of the frame is provided with an annular groove; the damping ring is engaged in the annular groove.

[0012] Optionally, the radial height of the damping ring is greater than the depth of the annular groove.

[0013] Optionally, the damping ring has a honeycomb structure.

[0014] Optionally, the spring is formed by stacking multiple layers of wavy thin sheets.

[0015] Optionally, the crest of one of the two adjacent wavy sheets corresponds to the trough of the other.

[0016] Optionally, the wave height of the corrugated sheet is 10 to 15 millimeters.

[0017] Optionally, the thickness of the corrugated sheet is 0.2 to 0.5 mm.

[0018] The technical solution provided by this utility model has the following technical effects:

[0019] 1. The combined design of the ring-shaped fixing frame, spring clips, and base effectively enhances the system's stability and safety. The ring-shaped fixing frame securely holds the cryogenic storage container, preventing it from moving or being subjected to unnecessary vibrations during transportation. The spring clips absorb vibrations and impacts during vehicle movement, protecting the cryogenic storage container from damage.

[0020] 2. The annular groove provides a precise installation position for the annular fixing bracket, ensuring a tight connection between the two and improving the stability and reliability of the overall structure. The snap-fit ​​method not only facilitates installation and disassembly but also reduces potential risks (such as thermal stress) associated with welding or other complex connection methods.

[0021] 3. The damping ring further enhances the shock absorption effect, protecting the safety of the cryogenic storage container by absorbing and buffering the vibration and impact generated during vehicle operation.

[0022] 4. The radial height design allows the damping ring sufficient deformation space under compression to absorb more vibration energy, while ensuring that material aging or creep after long-term use will not affect its basic function. This improves the damping ring's effective shock absorption capacity when facing external forces of varying intensities, which is especially important when encountering bumps or sudden braking during vehicle operation.

[0023] 5. The honeycomb structure gives the damping ring excellent elastic properties, enabling it to effectively absorb and buffer vibrations and impacts from all directions, protecting cryogenic storage containers from damage. It also optimizes stress distribution, avoids localized stress concentration, and extends service life.

[0024] 6. The multi-layered corrugated sheet design significantly enhances the overall structure's elastic deformation capacity, providing excellent shock absorption. Compared to a single-layer structure, it better protects cryogenic storage containers from sudden impacts.

[0025] 7. The corresponding arrangement of crests and troughs maximizes the use of the space between the thin layers for compression and expansion under pressure, effectively reducing vibrations transmitted to the cryogenic storage container. Uniform stress distribution avoids material fatigue or damage caused by localized stress concentration, ensuring the durability of the entire spring structure. Attached Figure Description

[0026] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of a liquid hydrogen container for automobiles provided in an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Low-temperature storage container; 2. Annular fixing frame; 3. Spring clip; 4. Base.

[0030] 21. Frame; 22. Damping ring;

[0031] 31. Wavy thin sheet. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0033] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0034] Figure 1 This is a schematic diagram of the structure of a liquid hydrogen container for automobiles provided in an embodiment of this utility model. The above schematic diagram is only for illustrating the structural relationships related to the utility model and is not intended to represent an actual product scale.

[0035] like Figure 1 As shown, a liquid hydrogen container for automobiles in this embodiment includes: a cryogenic storage container 1, an annular fixing frame 2, a spring 3, and a base 3; the annular fixing frame 2 is sleeved on the outside of the cryogenic storage container 1; the spring 3 is disposed between the annular fixing frame 2 and the base 3; the top of the spring 3 is connected to the annular fixing frame 2, and the bottom of the spring 3 is connected to the base 3.

[0036] The cryogenic storage container 1 is the part that directly stores liquid hydrogen and must be able to withstand extremely low temperatures (the boiling point of liquid hydrogen is approximately -253°C). It needs to have excellent thermal insulation properties to reduce the evaporation loss of liquid hydrogen and be robust enough to prevent damage from impacts or external pressure.

[0037] The ring-shaped fixing frame 2 surrounds the outside of the cryogenic storage container 1. Its main function is to provide additional protection and support, and at the same time, it helps to fix the position of the cryogenic storage container 1 to prevent it from moving or being affected by unnecessary vibration during transportation.

[0038] A spring clip 3 is positioned between the annular mounting bracket 2 and the base 3. The top of the spring clip 3 is connected to the annular mounting bracket 2, and the bottom is connected to the base 3. The spring clip 3 is designed to absorb and cushion vibrations and impacts from vehicle operation, thereby protecting the cryogenic storage container 1 from damage. This design helps extend the service life of the cryogenic storage container 1 and improves driving safety.

[0039] The base 3 provides fundamental support for the entire liquid hydrogen container system, ensuring the container can be stably mounted on the vehicle. It needs to have sufficient strength and stability, while also taking into account shock absorption, working in conjunction with the spring 3 to effectively reduce external impacts on the container.

[0040] At least two annular support brackets 2 are fitted onto the outside of the cryogenic storage container 1. This strengthens the support for the cryogenic storage container 1 and improves the overall structural stability. Each annular support bracket 2 is equipped with a corresponding spring clip 3, which is positioned between the annular support bracket 2 and the base 3. Each base 3 corresponds to one spring clip 3 and one annular support bracket 2, which effectively distributes weight and support force, reduces the pressure on individual components, and improves the durability of the system.

[0041] An annular groove is provided on the outer side of the cryogenic storage container 1; the annular fixing bracket 2 is snapped into the annular groove. These annular grooves not only provide an installation position for the annular fixing bracket 2, but also may provide some auxiliary fixing function, ensuring that the annular fixing bracket 2 will not easily slide or shift. Directly snapping the annular fixing bracket 2 into the annular groove of the cryogenic storage container 1 provides a tighter and more stable connection, helping to improve the overall system's resistance to external impacts.

[0042] In one embodiment, the annular fixing frame 2 includes a frame 21 and a damping ring 22; an annular groove is provided on the inner side of the frame 21; and the damping ring 22 is engaged in the annular groove.

[0043] The inner side of frame 21 is machined with an annular groove, which is designed to accommodate and fix the damping ring 22. The annular groove needs to be precisely matched with the damping ring 22 to ensure a tight connection between the two.

[0044] The damping ring 22 is engaged within an annular groove on the inner side of the frame 21. Its main function is to absorb and buffer the vibrations and impacts generated during vehicle operation, thereby reducing the likelihood of these forces being directly transmitted to the cryogenic storage container 1 and protecting the safety of liquid hydrogen storage. The damping ring 22 is typically made of a material with good elasticity and shock absorption properties.

[0045] Specifically, the damping ring 22 has a honeycomb structure. A honeycomb structure is a highly efficient mechanical design, composed of a series of hexagonal or other shaped small units interconnected to form a whole. This structure not only provides excellent elastic deformation capacity but also effectively disperses pressure under stress, thus achieving excellent vibration damping. The material selection for the honeycomb structure typically considers its elasticity and durability, such as specific types of rubber or engineering plastics. The honeycomb structure endows the damping ring 22 with excellent elastic properties, enabling it to effectively absorb and buffer vibrations and impacts from all directions, protecting the cryogenic storage container 1 from damage.

[0046] The radial height of the damping ring 22 is greater than the depth of the annular groove. This means that when the damping ring 22 is installed into the annular groove of the frame 21, a portion of the damping ring 22 will protrude above the annular groove. This design allows the damping ring 22 sufficient deformation space under compression to absorb more vibration energy, while also ensuring that even after long-term use, dimensional changes due to material aging or creep will not affect its basic function. Simultaneously, the radial height design ensures that the damping ring 22 maintains effective shock absorption when facing external forces of varying intensities, which is particularly important when encountering bumps or sudden braking during vehicle operation.

[0047] The frame 21 is shaped like an open ring or clamp, with its inner diameter slightly larger than the outer diameter of the annular groove, so that it can be fitted onto the outside of the cryogenic storage container 1. Typically, this frame 21 is divided into two parts or has some form of opening design to facilitate installation and disassembly.

[0048] For ease of installation and maintenance, frame 21 may include one or more open sections. These openings can be closed by bolts, clamps, or other fasteners to ensure that frame 21 fits snugly against cryogenic storage container 1. The design of the openings allows for inspection and maintenance of cryogenic storage container 1 without completely removing frame 21.

[0049] The cross-sectional shape of frame 21 can vary widely, commonly including circular, rectangular, or other complex geometric shapes, depending on design requirements and manufacturing processes. For example, a C-shaped cross-section can increase the rigidity of the structure, while a U-shaped cross-section may make it easier to achieve a fit with the damping ring 22.

[0050] To enhance the strength and stability of frame 21, reinforcing ribs or internal support structures may be added to its surface. These reinforcing structures not only improve the frame 21's resistance to external impacts but also help maintain its shape without deformation.

[0051] In one embodiment, the spring 3 is composed of multiple layers of corrugated sheets 31. This provides an effective method for absorbing and cushioning vibrations and impacts generated during vehicle operation.

[0052] Each corrugated sheet 31 has a specific crest and trough shape, which can effectively disperse and absorb externally applied pressure or vibration. By stacking multiple such sheets together, the elastic deformation capacity of the overall structure can be significantly enhanced, and good damping effect can be provided in different directions.

[0053] The stacking method of multi-layer sheets can be adjusted according to specific needs, such as changing the number of layers or adjusting the connection method between layers. Typically, these sheets are tightly connected by welding, bonding, or mechanical fastening to form a unified whole.

[0054] The wave-shaped design gives each layer of sheets a large range of elastic deformation, enabling them to effectively absorb energy under pressure. The multi-layer structure further enhances this characteristic, ensuring stable shock absorption even under high-intensity vibration environments.

[0055] Compared to a single-layer structure, the multi-layer corrugated sheet 31 design offers greater flexibility, allowing the spring sheet 3 to respond more precisely to changes in external forces. This helps to better protect the cryogenic storage container 1 from sudden impacts.

[0056] Because each thin sheet can independently undergo a certain degree of elastic deformation, the entire spring sheet structure is not easily damaged due to localized stress concentration. Furthermore, the wavy design helps reduce material fatigue and extend service life.

[0057] This design is particularly well-suited for handling various complex road conditions encountered during vehicle operation, such as bumpy roads, rapid acceleration, or deceleration. It can dynamically adjust its shape to adapt to constantly changing operating conditions, thus providing continuous and reliable support and protection for liquid hydrogen storage systems.

[0058] Specifically, the crest of one of two adjacent wavy sheets 31 corresponds to the trough of the other. In this arrangement, the crest of one sheet is located exactly above the trough of the adjacent sheet. This means that the waveforms of each sheet are complementary at the same location.

[0059] By arranging the crests and troughs in a corresponding manner, the space between the thin sheets can be maximized for compression and expansion under pressure. This method allows the spring sheet 3 to absorb a large amount of energy within a small deformation range, thereby effectively reducing the vibration transmitted to the cryogenic storage container 1.

[0060] Because the crests and troughs of adjacent thin sheets correspond to each other, this arrangement helps to distribute stress more evenly, avoiding material fatigue or damage caused by localized stress concentration. It ensures a more balanced stress distribution throughout the entire spring sheet structure, improving the system's durability.

[0061] The corresponding arrangement of crests and troughs increases the overall structural flexibility, enabling the spring piece 3 to better adapt to external forces of different directions and intensities. This not only improves the response to forces in a single direction but also enhances its adaptability to complex load conditions.

[0062] Specifically, the wave height of the corrugated sheet 31 is 10–15 mm, and the thickness of the corrugated sheet 31 is 0.2–0.5 mm. This design aims to maximize the shock absorption performance of the spring sheet 3, optimize space utilization, improve the durability and reliability of the system, and adapt to various complex operating conditions.

[0063] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0064] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0065] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid hydrogen container for automobiles, characterized in that, include: The cryogenic storage container (1), the annular fixing frame (2), the spring clip (3), and the base (4); The annular fixing frame (2) is sleeved on the outside of the low-temperature storage container (1); The spring piece (3) is disposed between the annular fixing frame (2) and the base (4); the top of the spring piece (3) is connected to the annular fixing frame (2), and the bottom of the spring piece (3) is connected to the base (4).

2. The liquid hydrogen container for automobiles according to claim 1, characterized in that, The outer side of the cryogenic storage container (1) is provided with an annular groove; The annular fixing bracket (2) is engaged in the annular groove.

3. A liquid hydrogen container for automobiles according to claim 1 or 2, characterized in that, The annular fixing frame (2) includes a frame (21) and a damping ring (22); The inner side of the frame (21) is provided with an annular groove; the damping ring (22) is engaged in the annular groove.

4. A liquid hydrogen container for automobiles according to claim 3, characterized in that, The radial height of the damping ring (22) is greater than the depth of the annular groove.

5. A liquid hydrogen container for automobiles according to claim 3, characterized in that, The damping ring (22) has a honeycomb structure.

6. A liquid hydrogen container for automobiles according to claim 1, characterized in that, The spring sheet (3) is composed of multiple layers of wavy thin sheets (31).

7. A liquid hydrogen container for automobiles according to claim 6, characterized in that, The crest of one of the two adjacent wavy sheets (31) corresponds to the trough of the other.

8. A liquid hydrogen container for automobiles according to claim 6 or 7, characterized in that, The wave height of the wavy sheet (31) is 10-15 mm.

9. A liquid hydrogen container for automobiles according to claim 6 or 7, characterized in that, The thickness of the wavy sheet (31) is 0.2 to 0.5 mm.

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