A hot plug structure of a solid-state hydrogen storage device tank and a tank bin

Abstract

The utility model discloses a solid hydrogen storage device tank body and the hot plug structure of tank storehouse, tank storehouse is equipped with the installation cavity of being suitable for tank body, tank body is fixed and is inserted in the installation cavity along the axial direction, the upper end of tank body is fixed with tank body joint, the upper end of tank storehouse is equipped with the joint seat of penetrating, the joint seat is equipped with the gas outlet channel along the center axis, and tank body joint is equipped with the gas outlet that extends to the inside of tank body along the center axis, tank body joint outer wall is equipped with first sealing washer and second sealing washer axially and interval, and first sealing washer and second sealing washer are sealed with the inner wall of gas outlet channel respectively, tank body joint outer wall is equipped with the first feed inlet, and the first feed inlet is located between first sealing washer and second sealing washer and is communicated with the inside of tank body, and the joint seat is equipped with the second feed inlet of being communicated with the first feed inlet. The utility model discloses the hot plug structure does not need complicated positioning assembly, reduces the plug precision requirement, reduces processing and assembly cost, and double -sealed structure effectively avoids hydrogen leakage simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy battery technology, specifically to a hot-swappable structure for the tank body and tank compartment of a solid hydrogen storage device. Background Technology

[0002] In the field of drone technology, endurance is a core factor limiting its ability to perform long-duration missions. Hydrogen fuel cells, with their significant advantages such as high energy density, long endurance, fast refueling, and zero carbon emissions, have become a key power supply solution for addressing the long endurance requirements of drones.

[0003] Current mainstream hydrogen storage technologies include gaseous hydrogen storage, liquid hydrogen storage, and solid-state hydrogen storage. Among them, gaseous hydrogen storage is widely used due to its high technological maturity, but the large size of the storage container can lead to a bulky system structure. Liquid hydrogen storage requires high-strength materials, increasing the weight of the battery system. Solid-state hydrogen storage has lower requirements for material strength and a relatively small volume; however, existing solid-state hydrogen storage methods have significant drawbacks: First, it is difficult to balance the ease of replacement of the hydrogen storage tank with the reliability of its seal. Since the connection between the hydrogen storage tank and the storage container needs to simultaneously achieve a sealed connection between the hydrogen output channel and the material inlet channel, existing plug-in structures usually require multiple sets of sealing interfaces, and the coaxiality and plug-in positioning accuracy of the interfaces are extremely high. This not only increases the difficulty and cost of processing and manufacturing, but also makes it easy for assembly errors to cause seal failure. Second, there are safety hazards in the process of replacing pressurized tanks. Before replacing a hydrogen storage tank, the internal pressure needs to be released through a pressure relief device. However, most existing structures adopt a centralized pressure relief design. During the pressure relief process, the tank may be subjected to uneven stress due to residual pressure or instantaneous airflow impact. Especially in the vibration environment of drones, this can easily cause the tank to fall off unexpectedly or the interface to be damaged, posing a safety risk. Utility Model Content

[0004] In view of this, the present invention proposes a hot-swappable structure for a solid hydrogen storage device to reduce the requirements for insertion and removal accuracy, improve sealing reliability and optimize pressure relief safety.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hot-swappable structure for a solid hydrogen storage device tank and a storage compartment is disclosed. The storage compartment has an installation cavity adapted to the shape of the tank. The tank is axially fixedly inserted into the installation cavity. A tank connector is fixedly provided at the upper end of the tank. A connector seat is provided through the upper end of the storage compartment. The connector seat has a gas outlet channel along the central axis. The tank connector has a gas outlet extending into the interior of the tank along the central axis. A first sealing ring and a second sealing ring are provided vertically and vertically along the axial direction on the outer peripheral wall of the tank connector. The first sealing ring and the second sealing ring respectively seal with the inner wall of the gas outlet channel. A first feed inlet is opened on the outer peripheral wall of the tank connector. The first feed inlet is located between the first sealing ring and the second sealing ring and communicates with the interior of the tank. The connector seat has a second feed inlet communicating with the first feed inlet.

[0007] To better achieve the above technical solution, the air outlet channel is further configured as a three-section stepped hole structure with progressively increasing diameter from top to bottom, including an upper section, a middle section, and a lower section. The first sealing ring is sealed to the inner wall of the middle section of the air outlet channel, and the second sealing ring is sealed to the inner wall of the lower section of the air outlet channel.

[0008] Furthermore, the lower and middle sections of the air outlet channel are connected by a first conical surface, and the outlet end of the second feed inlet is located on the first conical surface.

[0009] Furthermore, the outer peripheral wall of the tank connector is provided with annular grooves for accommodating the first sealing ring and the second sealing ring.

[0010] Furthermore, the end of the tank connector that mates with the connector seat is a two-section stepped columnar structure, and the connection of the two-section stepped columnar structure is a second conical surface, with the inlet end of the first feed port located on the second conical surface.

[0011] Furthermore, it also includes a T-connector, wherein the air inlet end of the T-connector is circumferentially sealed to the upper end of the air outlet channel, the first air outlet end of the T-connector is provided with a one-way valve for air supply, the one-way valve for air supply is connected to an air supply pipeline, and the conduction direction of the one-way valve for air supply is such that gas is allowed to flow from the first air outlet end of the T-connector to the air supply pipeline only; the second air outlet end of the T-connector is provided with an electronic pressure relief valve.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses a hot-swappable structure for the tank body and storage compartment of a solid hydrogen storage device. Simply inserting the tank body axially into the mounting cavity of the storage compartment achieves axial alignment of the gas outlet and the gas outlet channel, and connection between the first and second feed inlets. Simultaneously, through the double sealing of the first and second sealing rings with the inner wall of the gas outlet channel, an independent hydrogen output channel and material flow channel are formed. This structure eliminates the need for complex positioning components, significantly reducing the requirements for insertion and removal accuracy, thereby reducing processing and assembly costs. At the same time, the double sealing design effectively prevents hydrogen leakage and improves the system's sealing performance.

[0014] This invention discloses a hot-swappable structure for the tank and storage compartment of a solid-state hydrogen storage device. When the tank is pulled outward, the second sealing ring first separates from the lower inner wall of the gas outlet channel. At this time, the first sealing ring still maintains a sealing fit with the middle inner wall of the gas outlet channel. Residual hydrogen inside the tank can be slowly released through the gap formed by the first inlet, the lower section of the outer peripheral wall of the tank connector, and the lower end of the gas outlet channel, achieving initial pressure relief. As the tank is pulled out further, the first sealing ring separates from the middle inner wall of the gas outlet channel, completing the complete removal of the tank. This step-by-step pressure relief design avoids the impact force generated by the instantaneous release of a large amount of residual gas, reducing the risk of tank detachment or interface damage. At the same time, it enables safe hot-swappable operation under pressure without completely closing the system's main valve, improving replacement efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a hot-swappable structure between the tank body and the storage compartment of a solid hydrogen storage device according to an embodiment of this utility model;

[0016] Figure 2 yes Figure 1 A front view of the middle section of the structure;

[0017] Figure 3 yes Figure 2 Sectional view of AA;

[0018] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0019] Figure label:

[0020] Tank body 100, tank compartment 200, tank body connector 300, air outlet 301, first sealing ring 302, second sealing ring 303, first feed inlet 304, connector seat 400, air outlet channel 401, second feed inlet 402, T-connector 500, air supply check valve 600, electronic pressure relief valve 700, air supply pipeline 800. Detailed Implementation

[0021] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Identical components are indicated by the same reference numerals.

[0022] Please see Figures 1 to 4 This utility model discloses a hot-swappable structure for a solid hydrogen storage device tank body and a storage compartment. The storage compartment 200 is provided with an installation cavity that matches the shape of the tank body 100, and the tank body 100 is fixedly inserted into the installation cavity along the axial direction.

[0023] like Figure 3 and Figure 4 As shown, a tank connector 300 is fixedly installed at the upper end of the tank body 100, and a connector seat 400 is provided through the upper end of the tank compartment 200. The connector seat 400 is provided with an air outlet channel 401 along the central axis. The tank connector 300 is provided with an air outlet 301 extending into the interior of the tank body 100 along the central axis. A first sealing ring 302 and a second sealing ring 303 are provided vertically and vertically along the axial direction on the outer peripheral wall of the tank connector 300. The first sealing ring 302 and the second sealing ring 303 respectively seal and cooperate with the inner wall of the air outlet channel 401. A first feed inlet 304 is opened on the outer peripheral wall of the tank connector 300. The first feed inlet 304 is located between the first sealing ring 302 and the second sealing ring 303 and communicates with the interior of the tank body 100. The connector seat 400 is provided with a second feed inlet 402 that communicates with the first feed inlet 304.

[0024] In this embodiment, the hot-swappable structure only requires inserting the tank 100 axially into the mounting cavity of the tank 200 to achieve axial alignment of the gas outlet 301 and the gas outlet channel 401, and communication between the first feed inlet 304 and the second feed inlet 402. At the same time, through the double sealing of the first sealing ring 302 and the second sealing ring 303 with the inner wall of the gas outlet channel 401, an independent hydrogen output channel and material flow channel are formed. This structure does not require complex positioning components, which greatly reduces the requirements for insertion and removal accuracy, thereby reducing processing and assembly costs. Meanwhile, the double sealing design can effectively prevent hydrogen leakage and improve the system's sealing performance.

[0025] Specifically, the first sealing ring 302, the second sealing ring 303, the outer wall of the tank connector 300, and the inner wall of the connector seat 400 together form a liquid passage chamber. This liquid passage chamber is connected to the inside of the tank 100 through the first feed port 304 and to the external feed pipeline through the second feed port 402, realizing independent circulation of materials. Meanwhile, hydrogen enters the gas outlet channel 401 through the gas outlet 301, forming a hydrogen output path that is completely isolated from the material channel, avoiding mixing of hydrogen and materials and improving the safety of system operation.

[0026] In this embodiment, annular grooves for accommodating the first sealing ring 302 and the second sealing ring 303 are respectively formed on the outer peripheral wall of the tank connector 300. Both the first sealing ring 302 and the second sealing ring 303 protrude from the corresponding annular grooves. This structure ensures that the first sealing ring 302 and the second sealing ring 303 effectively compress against the inner wall of the air outlet channel 401, enhancing the sealing effect. At the same time, the annular grooves limit the movement of the first sealing ring 302 and the second sealing ring 303, preventing them from shifting or falling off during insertion and removal, thus improving structural stability.

[0027] In this embodiment, the venting channel 401 has a three-section stepped hole structure with progressively increasing diameter from top to bottom, including an upper section, a middle section, and a lower section. The first sealing ring 302 is sealed to the inner wall of the middle section of the venting channel 401, and the second sealing ring 303 is sealed to the inner wall of the lower section of the venting channel 401. The stepped hole structure can guide the insertion and removal stroke of the tank connector 300, reducing the difficulty of alignment during insertion. At the same time, the different diameter mating sections and corresponding sealing rings form a graded seal, further improving the sealing reliability.

[0028] In this embodiment, the lower and middle sections of the air outlet channel 401 are connected by a first conical surface, and the outlet end of the second feed inlet 402 is located on the first conical surface; the end of the tank connector 300 that mates with the connector seat 400 is a two-section stepped columnar structure, and the connection point of the two-section stepped columnar structure is a second conical surface; the inlet end of the first feed inlet 304 is located on the second conical surface; a gap is reserved between the inner wall of the air outlet channel 401 and the outer wall of the tank connector 300 to reduce frictional resistance during insertion and removal, and to facilitate quick replacement of the tank 100.

[0029] In this embodiment, a T-connector 500 is also included. The air inlet end of the T-connector 500 is circumferentially sealed to the upper end of the air outlet channel 401. The first air outlet end of the T-connector 500 is provided with a one-way valve 600, which is connected to an air supply pipeline 800. The one-way valve 600 is designed to allow gas to flow from the first air outlet end of the T-connector 500 to the air supply pipeline 800. The second air outlet end of the T-connector 500 is provided with an electronic pressure relief valve 700. The one-way valve 600 prevents gas in the air supply pipeline 800 from flowing back to the tank 100, thus avoiding back pressure impacting the tank 100. The electronic pressure relief valve 700 is normally closed. When the tank 100 needs to be replaced, the electronic pressure relief valve 700 can be opened to achieve active pressure relief. Combined with the step-by-step sealing design during the insertion and removal process, a double safety guarantee is formed.

[0030] This utility model discloses a hot-swappable structure for the tank body and tank compartment of a solid hydrogen storage device. During tank body 100 replacement, the safe depressurization process is as follows: When pulling out the tank body 100, the second sealing ring 303 first separates from the lower inner wall of the gas outlet channel 401. At this time, the first sealing ring 302 still maintains a sealing fit with the middle inner wall of the gas outlet channel 401. Residual hydrogen gas inside the tank body 100 can be slowly released through the gap formed by the first inlet 304, the lower section of the outer peripheral wall of the tank body connector 300, and the lower end of the gas outlet channel 401, achieving initial depressurization. As the tank body 100 continues to be pulled out, the first sealing ring 302 separates from the middle inner wall of the gas outlet channel 401, completing the complete removal of the tank body 100. This step-by-step depressurization design avoids the impact force generated by the instantaneous release of a large amount of residual gas, reducing the risk of tank body 100 detachment or interface damage. Simultaneously, it enables safe hot-swappable replacement under pressure without completely closing the system's main valve, improving replacement efficiency.

[0031] The technical solution of this utility model has been described in detail above with reference to specific embodiments. The specific embodiments described are used to help understand the concept of this utility model. Derivations and modifications made by those skilled in the art based on the specific embodiments of this utility model also fall within the protection scope of this utility model.

Claims

1. A hot-swappable structure for a solid hydrogen storage device tank body and a storage compartment, wherein the storage compartment (200) is provided with an installation cavity adapted to the shape of the tank body (100), the tank body (100) is axially fixedly inserted into the installation cavity, and a tank body connector (300) is fixedly provided at the upper end of the tank body (100), characterized in that: A connector seat (400) is provided through the upper end of the tank (200). The connector seat (400) is provided with an air outlet channel (401) along the central axis. The tank body connector (300) is provided with an air outlet (301) extending into the tank body (100) along the central axis. A first sealing ring (302) and a second sealing ring (303) are provided vertically and vertically along the axial direction on the outer peripheral wall of the tank body connector (300). The first sealing ring (302) and the second sealing ring (303) are respectively sealed and fitted with the inner wall of the air outlet channel (401). A first feed inlet (304) is provided on the outer peripheral wall of the tank body connector (300). The first feed inlet (304) is located between the first sealing ring (302) and the second sealing ring (303) and communicates with the inside of the tank body (100). The connector seat (400) is provided with a second feed inlet (402) communicating with the first feed inlet (304).

2. The hot-swappable structure for the solid hydrogen storage device tank and its compartment according to claim 1, characterized in that, The air outlet channel (401) has a three-section stepped hole structure with the diameter increasing from top to bottom, including an upper section, a middle section and a lower section. The first sealing ring (302) is sealed to the inner wall of the middle section of the air outlet channel (401), and the second sealing ring (303) is sealed to the inner wall of the lower section of the air outlet channel (401).

3. The hot-swappable structure for the solid hydrogen storage device tank and its compartment according to claim 2, characterized in that, The lower and middle sections of the air outlet channel (401) are connected by a first conical surface, and the outlet end of the second feed inlet (402) is located on the first conical surface.

4. The hot-swappable structure for the solid hydrogen storage device tank and its compartment according to claim 3, characterized in that, The outer peripheral wall of the tank connector (300) is provided with annular grooves for accommodating the first sealing ring (302) and the second sealing ring (303).

5. The hot-swappable structure for the solid hydrogen storage device tank and its compartment according to claim 4, characterized in that, The end of the tank connector (300) that mates with the connector seat (400) is a two-section stepped columnar structure. The connection of the two-section stepped columnar structure is a second conical surface. The inlet end of the first feed port (304) is opened on the second conical surface.

6. The hot-swappable structure for the tank body and tank compartment of a solid hydrogen storage device according to claim 1, characterized in that, It also includes a T-connector (500), the air inlet of which is circumferentially sealed to the upper end of the air outlet channel (401), the first air outlet of which is provided with a one-way valve (600), the one-way valve (600) is connected to an air supply pipeline (800), and the one-way valve (600) is configured to allow gas to flow from the first air outlet of the T-connector (500) to the air supply pipeline (800); the second air outlet of which is provided with an electronic pressure relief valve (700).

Images