Fuel cell cartridge level viewing cover

Abstract

The utility model belongs to fuel cell technical field, specifically disclose fuel cell box body liquid level observation cover, it includes: cover body, cover body includes observation cylinder and covers, the top of observation cylinder is provided with the through -hole for with fuel cell box body intercommunication, the bottom of observation cylinder is provided with the pressure relief hole intercommunication with through -hole, the cover part sets up in the bottom of observation cylinder and is used for sealing pressure relief hole, the side of cover part towards through -hole is provided with the recess of U type or C type, recess's groove bottom and the bottom surface between cover part form the pressure relief part of breakable. When the air pressure in the box reaches a certain value, the pressure relief part can be damaged to form a vent, so that the pressure relief hole and the outside space are communicated, the gas in the box flows through the through hole, the pressure relief hole and the vent to discharge to the outside, to achieve the purpose of fuel cell exhaust pressure relief, to protect the box and internal components, ensure the box and internal components of fuel cell intact.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to a liquid level observation cover for a fuel cell housing. Background Technology

[0002] Currently, fuel cell tank liquid level observation covers are installed on the tank body, allowing users to check the internal liquid level and detect problems promptly. However, existing liquid level observation covers only have the function of observing the internal liquid level, which is relatively limited. When the fuel cell experiences a purge port blockage or internal hydrogen flash explosion, the internal pressure increases, and simply observing the liquid level cannot detect and resolve the problem in time, potentially causing damage to the tank body and internal components, thus affecting its use. Utility Model Content

[0003] The purpose of this invention is to provide a liquid level observation cover for a fuel cell housing, so as to solve the technical problem that the liquid level observation cover in the prior art has a relatively simple function and cannot solve the problem of increased pressure inside the housing.

[0004] To achieve the above objectives, this utility model provides a fuel cell housing liquid level observation cover for installation on a fuel cell housing, comprising: a cover body; the cover body includes an observation cylinder and a covering portion; the top of the observation cylinder is provided with a through hole for communicating with the fuel cell housing; the bottom of the observation cylinder is provided with a pressure relief hole communicating with the through hole; the covering portion is disposed at the bottom of the observation cylinder and is used to seal the pressure relief hole; the side of the covering portion facing the through hole is provided with a U-shaped or C-shaped groove, and a destructible pressure relief portion is formed between the bottom of the groove and the bottom surface of the covering portion.

[0005] Preferably, the outer edge of the covering part is connected to the bottom of the observation tube.

[0006] Preferably, the groove is located on the outer edge of the covering portion.

[0007] Preferably, the observation tube is cylindrical.

[0008] Preferably, the thickness of the observation tube is greater than the thickness of the covering part, and the thickness of the covering part is greater than the thickness of the pressure relief part.

[0009] Preferably, the cover further includes a mounting portion; the mounting portion is disposed on the top outer edge of the observation tube, and the mounting portion is used to connect with the fuel cell housing.

[0010] Preferably, the mounting part is provided with a plurality of mounting holes.

[0011] Preferably, the mounting portion is annular.

[0012] Preferably, the cover is provided with a transparent window; the transparent window is located on the observation tube or the covering part.

[0013] Preferably, the bottom outer side of the observation tube is provided with rounded corners.

[0014] The fuel cell tank liquid level observation cover provided by this utility model has the following advantages: the bottom of the observation cylinder is connected to the cover, and a groove is provided on the side of the cover facing the through hole of the observation cylinder. This creates a destructible pressure relief part between the bottom of the groove and the bottom surface of the cover. The thickness of the pressure relief part is thinner than that of the cover. Because the pressure relief part is thinner, when the purge port of the fuel cell is blocked or there is an internal hydrogen flash explosion, the pressure inside the fuel cell tank increases, and stress concentration easily occurs in the pressure relief part of the cover. When the gas pressure inside the tank reaches a certain value, the pressure relief part can be destroyed to form a vent, allowing the pressure relief hole to connect with the external space. This allows the gas inside the tank to flow through the through hole, the pressure relief hole, and the vent to be discharged to the outside, achieving the purpose of venting and depressurizing the fuel cell, thus protecting the tank and internal components and ensuring the integrity of the fuel cell tank and internal components. Therefore, the fuel cell tank liquid level observation cover not only allows observation of the liquid level inside the fuel cell tank but also has a pressure relief protection function to better protect the fuel cell tank and internal components.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the fuel cell tank liquid level observation cover according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of the fuel cell tank liquid level observation cover according to an embodiment of the present utility model;

[0018] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is a structural schematic diagram of the fuel cell tank liquid level observation cover from another perspective of an embodiment of this utility model.

[0020] In the figure, 100 is the cover; 110 is the observation tube; 111 is the through hole; 112 is the pressure relief hole; 113 is the rounded corner; 120 is the covering part; 121 is the groove; 122 is the pressure relief part; 130 is the mounting part; 131 is the mounting hole; and 140 is the transparent window. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Please refer to the following: Figures 1 to 4 The fuel cell tank liquid level observation cover provided in this embodiment will now be described. This fuel cell tank liquid level observation cover is used to be installed on the fuel cell tank to promptly detect problems inside the battery.

[0026] Reference Figures 1 to 4 The fuel cell tank liquid level observation cover of this utility model embodiment includes: a cover body 100; the cover body 100 includes an observation cylinder 110 and a covering part 120; the top of the observation cylinder 110 is provided with a through hole 111 for communicating with the fuel cell tank; the bottom of the observation cylinder 110 is provided with a pressure relief hole 112 communicating with the through hole 111; the covering part 120 is provided at the bottom of the observation cylinder 110 and is used to seal the pressure relief hole 112; the side of the covering part 120 facing the through hole 111 is provided with a U-shaped or C-shaped groove 121, and a destructible pressure relief part 122 is formed between the bottom of the groove 121 and the bottom surface of the covering part 120, and the shape of the corresponding pressure relief part 122 is the same as the shape of the groove 121.

[0027] A transparent window 140 may be provided on the observation cylinder 110 or the cover 120 so that users or maintenance workers can view the liquid level inside the fuel cell tank and detect problems inside the battery in a timely manner. In this embodiment, the transparent window 140 is provided on the observation cylinder 110.

[0028] The cover portion 120 closes the pressure relief hole 112, and the cover portion 120 is provided with a groove 121 on the side facing the through hole 111. The thickness of the pressure relief portion 122 formed is thinner than the thickness of the cover portion 120. Because the pressure relief portion 122 is thinner, when the purge port of the fuel cell is blocked or the internal hydrogen flash explosion occurs, the pressure inside the fuel cell box increases, and the pressure relief portion 122 of the cover 100 is prone to stress concentration. Therefore, when the gas pressure inside the box reaches a certain value, the pressure relief portion 122 can be broken to form a vent, so that the pressure relief hole 112 is connected to the external space, allowing the gas inside the box to flow through the through hole 111, the pressure relief hole 112, and the vent to be discharged to the outside, so as to achieve the purpose of venting and depressurizing the fuel cell, thereby protecting the box and internal components and ensuring the integrity of the internal components of the fuel cell.

[0029] In this embodiment, the bottom of the observation cylinder 110 of the fuel cell tank liquid level observation cover is connected to the cover portion 120, and a groove 121 is provided on the side of the cover portion 120 facing the through hole 111 of the observation cylinder 110. This forms a destructible pressure relief portion 122 between the bottom of the groove 121 and the bottom surface of the cover portion 120. The thickness of the pressure relief portion 122 is thinner than the thickness of the cover portion 120. Because the pressure relief portion 122 is thinner, when the fuel cell experiences purging port blockage or internal hydrogen flashover... During an explosion, the pressure inside the fuel cell housing increases, and stress concentration is likely to occur in the pressure relief section 122 of the cover 100. When the gas pressure inside the housing reaches a certain value, the pressure relief section 122 can be destroyed to form a vent, allowing the pressure relief hole 112 to connect with the external space. This allows the gas inside the housing to flow through the through hole 111, the pressure relief hole 112, and the vent to be discharged to the outside, achieving the purpose of venting and depressurizing the fuel cell, thereby protecting the housing and internal components and ensuring the integrity of the fuel cell housing and internal components.

[0030] It is understandable that by setting the shape of the groove 121 to be C-shaped or U-shaped, when the gas inside the box expands the pressure relief part 122, the cover part 120 can be flipped open to control the damage form of the cover part 120, and to prevent the fragments of the cover part 120 from being sprayed to other locations or onto the human body after the pressure relief part 122 is expanded, so as to avoid safety accidents and ensure safe use.

[0031] In some embodiments of this utility model, reference is made to Figures 1 to 4 The outer edge of the cover part 120 is connected to the bottom of the observation tube 110, which makes the connection between the cover part 120 and the observation tube 110 tighter and ensures airtightness.

[0032] In some embodiments of this utility model, reference is made to Figures 1 to 4 The groove 121 is located on the outer edge of the cover 120, which allows the vent formed after the pressure relief part 122 is destroyed to be larger, so as to release the gas in the box more quickly and ensure that the box and internal components will not be damaged due to the sudden increase in air pressure.

[0033] In some embodiments of this utility model, reference is made to Figures 1 to 4 The observation tube 110 is cylindrical. The cylindrical shape of the observation tube 110 is convenient to manufacture, and the observation tube 110 is less prone to stress concentration, so that the stress is concentrated at the groove 121 of the cover part 120, so as to damage the pressure relief part 122.

[0034] In some embodiments of this utility model, reference is made to Figures 1 to 4 The thickness of the observation cylinder 110 is greater than the thickness of the cover part 120, and the thickness of the cover part 120 is greater than the thickness of the pressure relief part 122. Therefore, when the fuel cell experiences a blockage of the purge port or an internal hydrogen flash explosion, the pressure relief part 122 is guaranteed to be damaged before other parts of the cover 100, thus avoiding damage to other parts of the fuel cell tank liquid level observation cover.

[0035] In some embodiments of this utility model, reference is made to Figures 1 to 4 The cover 100 further includes a mounting portion 130; the mounting portion 130 is disposed on the top outer edge of the observation tube 110, and the mounting portion 130 is used to connect with the fuel cell housing. The mounting portion 130 is used to connect with the housing to ensure that the cover 100 can be securely installed on the fuel cell housing.

[0036] In some embodiments of this utility model, reference is made to Figures 1 to 4 The mounting part 130 is provided with a plurality of mounting holes 131. The mounting holes 131 can be used to install fasteners such as bolts and pins so as to install the cover 100 on the housing of the fuel cell.

[0037] In some embodiments of this utility model, reference is made to Figures 1 to 4 The mounting part 130 is annular. The annular mounting part 130 is adapted to the shape of the cylindrical observation tube 110, and the observation tube 110, the cover part 120, and the mounting part 130 can be integrally formed on the cover body 100, which is convenient for manufacturing.

[0038] In some embodiments of this utility model, reference is made to Figures 1 to 4 The bottom outer side of the observation tube 110 is provided with a rounded corner 113. By providing the rounded corner 113, the outer side of the cover 100 can be made more rounded, avoiding scratching the human body or other parts.

[0039] In summary, in this embodiment, the bottom of the observation cylinder 110 of the fuel cell tank liquid level observation cover is connected to the cover portion 120, and a groove 121 is provided on the side of the cover portion 120 facing the through hole 111 of the observation cylinder 110. This forms a destructible pressure relief portion 122 between the bottom of the groove 121 and the bottom surface of the cover portion 120. The thickness of the pressure relief portion 122 is thinner than the thickness of the cover portion 120. Because the pressure relief portion 122 is thinner, when the fuel cell experiences purging port blockage or internal hydrogen... During a gas flash explosion, the pressure inside the fuel cell housing increases, and stress concentration is likely to occur in the pressure relief section 122 of the cover 100. When the gas pressure inside the housing reaches a certain value, the pressure relief section 122 can be destroyed to form a vent, allowing the pressure relief hole 112 to connect with the external space. This allows the gas inside the housing to flow through the through hole 111, the pressure relief hole 112, and the vent to be discharged to the outside, achieving the purpose of venting and depressurizing the fuel cell, thereby protecting the housing and internal components and ensuring the integrity of the fuel cell housing and internal components.

[0040] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A liquid level observation cover for a fuel cell housing, for installation on the fuel cell housing, characterized in that, include: The cover body includes an observation cylinder and a cover portion; the top of the observation cylinder is provided with a through hole for communicating with the fuel cell housing; the bottom of the observation cylinder is provided with a pressure relief hole communicating with the through hole; the cover portion is provided at the bottom of the observation cylinder and is used to seal the pressure relief hole; the cover portion is provided with a U-shaped or C-shaped groove on the side facing the through hole, and a destructible pressure relief portion is formed between the bottom of the groove and the bottom surface of the cover portion.

2. The fuel cell tank liquid level observation cover according to claim 1, characterized in that, The outer edge of the cover is connected to the bottom of the observation tube.

3. The fuel cell tank liquid level observation cover according to claim 2, characterized in that, The groove is located on the outer edge of the covering portion.

4. The fuel cell tank liquid level observation cover according to claim 3, characterized in that, The observation tube is cylindrical.

5. The fuel cell tank liquid level observation cover according to claim 1, characterized in that, The thickness of the observation cylinder is greater than the thickness of the covering part, and the thickness of the covering part is greater than the thickness of the pressure relief part.

6. The fuel cell tank liquid level observation cover according to claim 1, characterized in that, The cover also includes a mounting part; the mounting part is disposed on the top outer edge of the observation tube, and the mounting part is used to connect with the fuel cell housing.

7. The fuel cell tank liquid level observation cover according to claim 6, characterized in that, The mounting section is provided with multiple mounting holes.

8. The fuel cell tank liquid level observation cover according to claim 7, characterized in that, The mounting part is circular in shape.

9. The fuel cell tank liquid level observation cover according to claim 1, characterized in that, The cover is provided with a transparent window; the transparent window is located on the observation tube or the cover.

10. The fuel cell tank liquid level observation cover according to claim 1, characterized in that, The bottom outer side of the observation tube is rounded.

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