Adapter for mounting hydrogen concentration sensor

Abstract

The utility model relates to an adapter (100) for mounting a hydrogen concentration sensor (200) on an electric pile shell of a hydrogen fuel cell. The adapter (100) comprises a plate-shaped body part (1), a plurality of fixing parts (2) and a plurality of fixing parts (3), the hydrogen passing hole (2) is formed in the center of the body part (1); a group of stack housing mounting holes (4) provided around the hydrogen passing holes (2) for mounting the adapter (100) to the stack housing; and the at least two groups of sensor mounting holes are arranged around the hydrogen passing hole (2) and are used for mounting the hydrogen concentration sensor (200) to the adapter (100). The adapter provides at least two mounting angles, and by means of the adapter, the hydrogen concentration sensor can be conveniently mounted on the galvanic pile shell, so that on one hand, the adapter can be adaptive to mounting interfaces of different manufacturers, and on the other hand, the adapter can be prevented from being interfered by wire bundles.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to the technical field of hydrogen concentration detection of hydrogen fuel cell stacks. Background Art

[0002] A hydrogen fuel cell is a power generation device that converts the chemical energy of hydrogen and oxygen into electrical energy, and generally includes a fuel cell stack, a hydrogen supply device, an air supply device, and a thermal management system. Hydrogen from the hydrogen supply device and oxygen from the air supply device undergo an electrochemical reaction in the fuel cell stack under the action of a catalyst to generate electrical energy, which can be used to drive motor vehicles, etc. Hydrogen fuel cells only produce water and heat during the electrochemical reaction process, and are a clean energy source, so they have broad development prospects.

[0003] However, hydrogen is easy to leak and has a very wide explosion range. As long as it is mixed with air at a ratio of 4% to 75%, an explosion may occur. Therefore, it is necessary to detect possible hydrogen leaks. One of the important detection locations is the fuel cell stack.

[0004] In the prior art, a hydrogen concentration sensor is installed on the upper part of the fuel cell stack housing to detect hydrogen leakage in the fuel cell stack. However, the installation interfaces for installing hydrogen concentration sensors on the fuel cell stack housings of different manufacturers are not completely unified. In addition, due to the interference of the wire harness, there is sometimes not enough space to install the hydrogen concentration sensor. Therefore, there is a need to design an adapter to allow for convenient installation of the hydrogen concentration sensor. Utility Model Content

[0005] The utility model aims to solve at least one of the above problems existing in the prior art.

[0006] To this end, the utility model proposes an adapter for installing a hydrogen concentration sensor to a stack shell of a hydrogen fuel cell, the adapter comprising: a plate-shaped main body; a hydrogen through hole arranged at the center of the main body; a group of stack shell mounting holes arranged around the hydrogen through hole for mounting the adapter to the stack shell; and at least two groups of sensor mounting holes arranged around the hydrogen through hole for mounting the hydrogen concentration sensor to the adapter. The adapter provides at least two mounting angles, with the aid of which the hydrogen concentration sensor can be conveniently mounted to the stack shell, which can adapt to mounting interfaces of different manufacturers on the one hand, and avoid interference from wire harnesses on the other hand.

[0007] In a preferred embodiment, the adapter further comprises a first annular boss and a second annular boss concentrically arranged around the hydrogen through hole, the first annular boss and the second annular boss extending outward perpendicularly to the top surface of the body portion, so that an annular groove for accommodating a sealing ring is formed between the first annular boss and the second annular boss. This allows convenient sealing between the adapter and the hydrogen concentration sensor.

[0008] In a preferred embodiment, the adapter further comprises a third annular boss arranged around the hydrogen through hole, the third annular boss extending outward perpendicularly to the bottom surface of the main body. When in use, the third annular boss is inserted into and sealed into the corresponding hydrogen outlet of the stack housing. This allows for convenient sealing between the adapter and the stack housing.

[0009] In a preferred embodiment, the adapter further includes a raised portion protruding outwardly perpendicular to the bottom surface of the main body, and the third annular boss extends outwardly from the raised portion. By providing the raised portion, a certain distance can be formed between the adapter and the stack housing, thereby facilitating the avoidance of interference of the wire bundle with the installation of the hydrogen concentration sensor.

[0010] In a preferred embodiment, the adapter further includes two lugs extending outward from the first side surface and the second side surface of the body part which are opposite to each other, the two lugs are arranged on both sides of the hydrogen passage hole in the first diameter direction of the hydrogen passage hole, and each lug is provided with a stack housing mounting hole. By providing the stack housing mounting hole in the lug, the volume of the body part of the adapter can be reduced, which is conducive to avoiding installation interference and reducing production costs.

[0011] In a preferred embodiment, each stack housing mounting hole is an elongated hole extending in the first diameter direction of the hydrogen passage hole. The elongated hole allows for adapting to different hole spacings of corresponding mounting holes of stack housings of different manufacturers.

[0012] In a preferred embodiment, each group of sensor mounting holes includes two sensor mounting holes, and the two sensor mounting holes are arranged on both sides of the hydrogen passing hole in a diameter direction of the hydrogen passing hole that is different from the first diameter direction.

[0013] In a preferred embodiment, one of the sensor mounting holes in each group of sensor mounting holes is arranged close to the first side of the main body, and the other sensor mounting hole in each group of sensor mounting holes is arranged close to the second side of the main body. This helps to avoid interference between the hydrogen concentration sensor and the stack housing mounting hole of the adapter.

[0014] In a preferred embodiment, the adapter includes two groups of sensor mounting holes, and the two groups of sensor mounting holes are symmetrically arranged about a line connecting two stack casing mounting holes.

[0015] In a preferred embodiment, the sensor mounting hole is a round hole or an elongated hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is described in detail below by way of non-limiting embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a stereoscopic view of an adapter for mounting a hydrogen concentration sensor to a stack housing of a hydrogen fuel cell according to a preferred embodiment of the utility model;

[0018] Figure 2 yes Figure 1 Another perspective view of the adapter shown;

[0019] Figure 3 yes Figure 1 a front view of the adapter shown;

[0020] Figure 4 It is equipped with a hydrogen concentration sensor Figure 1 adapter shown.

[0021] These drawings are merely schematic and not necessarily drawn to scale, and are merely used to illustrate the present invention. DETAILED DESCRIPTION

[0022] In the following description, many specific details are set forth so that those skilled in the art can more fully understand the present invention. However, it is obvious to those skilled in the art that the present invention may be implemented without some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the following features and elements may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless explicitly stated in the claims.

[0023] In this document, the terms “first”, “second”, and “third” are used to describe components or parts, and these terms are only used to distinguish each component or part, and are not used to limit the order or number of these components or parts.

[0024] like Figures 1 to 4 As shown, the utility model provides an adapter 100, which is used to install a hydrogen concentration sensor 200 to a stack housing (not shown) of a hydrogen fuel cell. The hydrogen concentration sensor 200 is used to detect the concentration of hydrogen leaked from the stack.

[0025] like Figures 1 to 3As shown, the adapter 100 includes a plate-shaped body portion 1. In the preferred embodiment shown in the figure, the body portion 1 is in the form of a rectangular plate. The body portion 1 includes a top surface 11, a bottom surface 12, and a side surface connecting the top surface 11 and the bottom surface 12. However, it should be understood that any other suitable shape can be conceived, such as a circle, an ellipse, a polygon, etc.

[0026] like Figures 1 to 3 As shown, a hydrogen through hole 2 is provided at the approximate center of the main body 1. A group of stack housing mounting holes for mounting the adapter 100 to the stack housing are provided around the hydrogen through hole 2. In the preferred embodiment shown in the figure, the adapter 100 includes two stack housing mounting holes 4, 4. It can be imagined that the number of stack housing mounting holes of the adapter 100 matches the number of corresponding mounting holes of the stack housing.

[0027] In the preferred embodiment shown in the figure, Figure 1 As shown, the adapter 100 includes two lugs 5, 5 extending outward from a first side surface 13 and a second side surface 14 of the main body 1 opposite to each other, and the two lugs 5, 5 are arranged on both sides of the hydrogen through hole 2 in the first diameter direction of the hydrogen through hole 2, and a stack housing mounting hole 4 is provided in each lug 5. Preferably, each stack housing mounting hole 4 is an elongated hole extending in the first diameter direction of the hydrogen through hole 2 to adapt to different hole spacings of corresponding mounting holes of stack housings of different manufacturers.

[0028] like Figures 1 to 3 As shown, at least two groups of sensor mounting holes are provided around the hydrogen through hole 2 for mounting the hydrogen concentration sensor 200 on the adapter 100. Figure 1 In the preferred embodiment shown, two groups of sensor mounting holes are provided, each group of sensor mounting holes includes two sensor mounting holes, that is, a first group of sensor mounting holes 3, 3 and a second group of sensor mounting holes 3', 3'. This allows two mounting angles to be provided for the hydrogen concentration sensor 200. Preferably, the first group of sensor mounting holes 3, 3 are arranged on both sides of the hydrogen through hole 2 in the second diameter direction of the hydrogen through hole 2, and the second group of sensor mounting holes 3', 3' are arranged on both sides of the hydrogen through hole 2 in the third diameter direction of the hydrogen through hole 2. The second diameter direction is different from the third diameter direction. And, preferably, the second diameter direction and the third diameter direction are also different from the first diameter direction. It should be understood that more groups of sensor mounting holes can be provided according to the installation angle requirements. It can be imagined that the number of sensor mounting holes of each group of sensor mounting holes of the adapter 100 matches the number of corresponding mounting holes of the hydrogen concentration sensor 200. In the preferred embodiment shown in the figure, the sensor mounting holes are circular holes. It should be understood that the sensor mounting hole may also be an elongated hole to adapt to different hole spacings of corresponding mounting holes of hydrogen concentration sensors 200 from different manufacturers.

[0029] In the preferred embodiment shown in the figure, one of the sensor mounting holes in each group of sensor mounting holes is arranged close to the first side surface 13 of the main body 1, and the other sensor mounting hole in each group of sensor mounting holes is arranged close to the second side surface 14 of the main body 1. This is conducive to avoiding interference between the hydrogen concentration sensor 200 and the stack housing mounting hole 4 of the adapter 100.

[0030] In the preferred embodiment shown in the figure, the first group of sensor mounting holes 3, 3 and the second group of sensor mounting holes 3', 3' are arranged symmetrically about the line connecting the two stack shell mounting holes 4, 4. This can basically meet the installation angle requirements of different manufacturers, and the manufacturing process is simple. It should be understood that according to the installation angle requirements, the first group of sensor mounting holes 3, 3 and the second group of sensor mounting holes 3', 3' can be arranged asymmetrically about the line connecting the two stack shell mounting holes 4, 4.

[0031] Preferably, if Figure 1 As shown, a first annular boss 6 and a second annular boss 7 are concentrically arranged around the hydrogen through hole 2. The first annular boss 6 and the second annular boss 7 extend outward perpendicularly to the top surface 11 of the body 1, so that an annular groove 8 for accommodating a sealing ring is formed between the first annular boss 6 and the second annular boss 7.

[0032] Advantageously, if Figure 2 As shown, the adapter 100 also includes an elevated portion 10 protruding outward perpendicularly to the bottom surface 12 of the main body 1. The third annular boss 9 arranged around the hydrogen passage hole 2 extends outward from the elevated portion 10. When installed in the stack housing, the third annular boss 9 is inserted into and sealed into the corresponding hydrogen outlet of the stack housing. The elevated portion 10 allows a certain distance to exist between the main body 1 and the stack housing, which helps to avoid interference of the wire bundle with the installation of the hydrogen concentration sensor 200.

[0033] exist Figure 2 In the preferred embodiment shown, the heightened portion 10 is in the form of a rectangular platform. It should be understood that the heightened portion 10 can be in any suitable form, such as a circular platform, an elliptical platform, a polygonal platform, etc.; or, the heightened portion 10 may not be provided, and the third annular boss 9 extends directly outward from the bottom surface 12 of the body portion 1.

[0034] To install, follow these steps. First, put the sealing ring into the annular groove 8 of the adapter 100; then place the hydrogen concentration sensor 200 on the top surface 11 of the adapter 100, align the hydrogen inlet of the hydrogen concentration sensor 200 with the hydrogen through hole 2 of the adapter 100 and align the mounting hole of the hydrogen concentration sensor 200 with one group of sensor mounting holes of the adapter 100; then install the hydrogen concentration sensor 200 to the adapter 100 and press the sealing ring at the same time with the help of bolts 201 passing through the mounting holes of the hydrogen concentration sensor 200 and one group of sensor mounting holes of the adapter 100; then insert the third annular boss 9 of the adapter 100 into the corresponding hydrogen outlet of the stack shell, and align the stack shell mounting holes 4, 4 of the adapter 100 with the corresponding mounting holes of the stack shell; finally, fix and seal the adapter 100 to the stack shell with the help of bolts passing through the stack shell mounting holes 4, 4 of the adapter 100 and the corresponding mounting holes of the stack shell, thereby installing the hydrogen concentration sensor 200 to the stack shell with the help of the adapter 100. This allows hydrogen leaking from the fuel cell stack to pass through the hydrogen through hole 2 and be detected by the hydrogen concentration sensor 200, and transmits a signal representing the hydrogen concentration to the vehicle control unit via a wiring harness connected to the interface 202 of the hydrogen concentration sensor 200. With the help of the adapter 100 of the utility model, hydrogen concentration sensors from different manufacturers can be conveniently installed on fuel cell stack shells from different manufacturers.

[0035] Although the utility model is disclosed as above with preferred embodiments, the utility model is not limited thereto. Any changes and modifications made by any person skilled in the art without departing from the spirit and scope of the utility model should be included in the protection scope of the utility model, so the protection scope of the utility model should be based on the scope defined in the claims.

Claims

1. An adapter for installing a hydrogen concentration sensor, the adapter (100) being used to install the hydrogen concentration sensor (200) to a stack housing of a hydrogen fuel cell, characterized in that: The adapter (100) comprises: A plate-shaped main body (1); A hydrogen gas passage hole (2) provided at the center of the main body (1); A group of stack casing mounting holes (4) arranged around the hydrogen passage hole (2) and used for mounting the adapter (100) to the stack casing; At least two groups of sensor mounting holes are arranged around the hydrogen passing hole (2) and are used to mount the hydrogen concentration sensor (200) to the adapter (100).

2. The adapter for installing a hydrogen concentration sensor according to claim 1, characterized in that: The adapter (100) further comprises a first annular boss (6) and a second annular boss (7) which are arranged concentrically around the hydrogen passage hole (2); the first annular boss (6) and the second annular boss (7) extend outward perpendicularly to the top surface (11) of the main body (1), thereby forming an annular groove (8) for accommodating a sealing ring between the first annular boss (6) and the second annular boss (7).

3. The adapter for installing a hydrogen concentration sensor according to claim 2, characterized in that: The adapter (100) further comprises a third annular boss (9) arranged around the hydrogen passage hole (2), and the third annular boss (9) extends outward perpendicularly to the bottom surface (12) of the main body (1).

4. The adapter for installing a hydrogen concentration sensor according to claim 3, characterized in that: The adapter (100) further comprises a raised portion (10) protruding outwardly perpendicularly to the bottom surface (12) of the main body (1), and a third annular boss (9) extends outwardly from the raised portion (10).

5. The adapter for mounting a hydrogen concentration sensor according to any one of claims 1 to 4, characterized in that: The adapter (100) further comprises two lugs (5) extending outward from a first side surface (13) and a second side surface (14) of the main body (1) which are opposite to each other, the two lugs (5) being arranged on both sides of the hydrogen passage hole (2) in a first diameter direction of the hydrogen passage hole (2), and each lug (5) being provided with a stack casing mounting hole (4).

6. The adapter for installing a hydrogen concentration sensor according to claim 5, characterized in that: Each stack casing mounting hole (4) is an elongated hole extending in the first diameter direction of the hydrogen passage hole (2).

7. The adapter for installing a hydrogen concentration sensor according to claim 5, characterized in that: Each group of sensor mounting holes comprises two sensor mounting holes, and the two sensor mounting holes are arranged on both sides of the hydrogen passing hole (2) in a diameter direction of the hydrogen passing hole (2) different from the first diameter direction.

8. The adapter for installing a hydrogen concentration sensor according to claim 7, characterized in that: One of the sensor mounting holes in each group of sensor mounting holes is arranged close to a first side surface (13) of the main body (1), and another of the sensor mounting holes in each group of sensor mounting holes is arranged close to a second side surface (14) of the main body (1).

9. The adapter for installing a hydrogen concentration sensor according to claim 8, characterized in that: The adapter (100) comprises two groups of sensor mounting holes, and the two groups of sensor mounting holes are symmetrically arranged with respect to a line connecting two stack casing mounting holes (4).

10. The adapter for mounting a hydrogen concentration sensor according to any one of claims 1 to 4, characterized in that: The sensor mounting hole is a round hole or an elongated hole.

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