Waterproof and breathable hydrogen sensor device

Abstract

The utility model relates to a waterproof and breathable hydrogen sensor device, which comprises a shell, a waterproof and breathable film for water resistance and breathability, an air pressure buffer cover for gas shunting, a PCB (printed circuit board) loaded with a hydrogen chip and a bottom cover. According to the hydrogen sensor device, the thin waterproof breathable film is adhered to the inner wall of the air inlet grille of the shell, so that ventilation can be kept, water molecules can be prevented from entering the cavity in the shell, and the waterproof and breathable functions of the hydrogen sensor device are realized. And the waterproof breathable film on the inner wall of the air inlet grille is pressed and attached through the air pressure buffer cover, so that the situation that water molecules enter the inner cavity of the shell due to untight attachment of the waterproof breathable film and the inner wall of the air inlet grille is avoided, and the situation that the waterproof breathable film falls off due to impact of high-pressure air is avoided. And the air pressure buffer cover can be used for carrying out shunting treatment on the high-speed flowing gas, so that the flow speed of the high-speed flowing gas is reduced, the high-speed flowing gas is slightly diffused into the inner cavity of the shell, and the interference on the hydrogen chip is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sensors, in particular to a waterproof and breathable hydrogen sensor device. Background Art

[0002] With the rapid development of electric vehicles, electric vehicles and energy storage power stations should be equipped with battery BMS systems for effective thermal runaway monitoring and early warning. There are many reasons for thermal runaway of power batteries and energy storage batteries. Currently, there is evidence that in the case of thermal runaway caused by external overheating and mechanical collision (including needle puncture), the BMS detects the thermal runaway state (mainly measuring voltage and temperature) later than the gas and pressure monitoring time point.

[0003] Related research shows that CO2, CO, H2, C2H4, CH4, C2H6 and C3H6 are the seven most common gases in battery thermal runaway, and there is no correlation between the concentration of different gases and battery capacity. In addition, among all gases, hydrogen leaks out first and diffuses the fastest.

[0004] Therefore, in order to better monitor the status of the battery pack and conduct effective thermal runaway monitoring and early warning, multiple hydrogen sensors are generally equipped to detect the diffusion and concentration of hydrogen gas.

[0005] In order to ensure the stability of hydrogen sensors, it is generally necessary to seal and waterproof the hydrogen sensors to prevent rain and foreign objects from falling into the sensor device and affecting the sensor's detection results. Hydrogen sensors usually need to meet the IPX7 waterproof requirements, that is, to ensure that hydrogen gas can enter and exit the sensor normally, while meeting the waterproof requirements. At the same time, in order to withstand a certain external air pressure shock, the hydrogen sensor chip also needs to avoid direct air pressure shock. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a hydrogen sensor device which is waterproof, breathable and resistant to air pressure shock.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A waterproof and breathable hydrogen sensor device comprises a housing, a waterproof and breathable membrane for waterproofing and breathability, a pressure buffer cover for gas diversion, a PCB board carrying a hydrogen chip, and a bottom cover;

[0009] The shell is regularly provided with an air intake grille, and an internal chamber of the shell is provided inside the internal chamber of the shell for accommodating the air pressure buffer cover and the PCB board, and the internal chamber of the shell is connected to the external environment through the air intake grille;

[0010] The waterproof and breathable membrane is attached to the inner wall of the air intake grille to seal the air intake grille;

[0011] The air pressure buffer cover is arranged and installed in the inner chamber of the shell, the air inlet end of the air pressure buffer cover presses the waterproof breathable membrane and the inner wall of the air inlet grille, and the air outlet end of the air pressure buffer cover is arranged in the inner chamber of the shell; the air pressure buffer cover includes an air inlet duct and a plurality of air vents for diversion, the air inlet duct extends from the air inlet end of the air pressure buffer cover to its air outlet end, the front end of the air inlet duct is connected to the external environment through the waterproof breathable membrane and the air inlet grille in turn, and the rear end of the air inlet duct is connected to the inner chamber of the shell through the plurality of air vents, the plurality of air vents are regularly arranged at the air outlet end of the air pressure buffer cover, and the plurality of air vents are arranged away from the hydrogen chip;

[0012] The hydrogen chip is arranged below the air pressure buffer cover, and the air outlet end of the air pressure buffer cover is sealed to one side of the hydrogen chip;

[0013] The bottom cover is installed at the bottom end of the shell, and the waterproof and breathable membrane, the air pressure buffer cover and the PCB board are regularly sealed in the inner chamber of the shell through a sealing structure between the bottom cover and the shell.

[0014] Furthermore, a protruding hollow cone is provided at the upper end of the outer shell, the air inlet grille is provided on the top surface of the hollow cone, the internal chamber of the hollow cone is communicated with the internal chamber of the outer shell to form an air pressure buffer cover mounting groove for installing the air pressure buffer cover; the air pressure buffer cover is installed in the air pressure buffer cover mounting groove by interference fit with the inner wall of the hollow cone, the air inlet end at the front end of the air pressure buffer cover presses the waterproof and breathable membrane tightly against the inner wall of the air inlet grille, and the air outlet end at the rear end extends into the internal chamber of the outer shell to expose the plurality of air vents that are communicated with the internal chamber of the outer shell.

[0015] Furthermore, the plurality of vent holes are regularly arranged on the side of the gas outlet end of the air pressure buffer cover to avoid the hydrogen chip below the bottom surface of the gas outlet end.

[0016] Furthermore, a sealing ring for sealing is provided between the air pressure buffer cover and the hollow truncated cone.

[0017] Furthermore, the four sides of the bottom cover are regularly provided with a bottom cover outer baffle plate and a bottom cover inner baffle plate from the outside to the inside, and a shell card slot for the four sides of the front, back, left and right of the shell to be inserted is formed between the bottom cover outer baffle plate and the bottom cover inner baffle plate. The four sides of the shell are inserted into the shell card slot and are clamped, fixed and sealed by the bottom cover outer baffle plate and the bottom cover inner baffle plate.

[0018] Furthermore, PCB positioning posts for positioning and supporting the PCB board are regularly arranged at the four corners of the internal chamber of the shell, and the PCB positioning posts are arranged without contacting the inner wall of the internal chamber of the shell, so that a bottom cover inner baffle groove for clamping the bottom cover inner baffle is formed between the PCB positioning posts and the inner wall of the internal chamber of the shell, and when the shell is inserted into the shell groove on the bottom cover, the bottom cover inner baffle on the inner side of the bottom cover is inserted into the bottom cover inner baffle groove.

[0019] Furthermore, the height of the inner baffle plate of the bottom cover is higher than the height of the outer baffle plate of the bottom cover.

[0020] Furthermore, sealing ring grooves are provided at the bottom ends of the four sides of the shell, and sealing rings are installed thereon. The four sides of the shell are sealed with the shell grooves on the bottom cover through the sealing rings.

[0021] Furthermore, an interface is provided on the shell, and a plurality of PIN pins are regularly arranged in the interface. One end of the plurality of PIN pins is arranged in the interface, and the other end thereof extends into the internal cavity of the shell to be electrically connected to the pads on the PCB board.

[0022] Furthermore, the outer surface or inner wall of the interface is regularly provided with a plurality of positioning strips for quick positioning along its insertion direction, and the outer surface or inner wall of the interface is also regularly provided with a card block or a card slot for engaging with an external data interface.

[0023] The beneficial effects of the utility model are:

[0024] 1. The waterproof and breathable hydrogen sensor device of the utility model has a thin waterproof and breathable membrane attached to the inner wall of the air intake grille of the shell, so that water molecules can be blocked from entering the chamber inside the shell while maintaining ventilation, thereby realizing the waterproof and breathable function of the hydrogen sensor device.

[0025] 2. The waterproof and breathable hydrogen sensor device of the utility model is provided with a raised hollow cone on the outer shell, and an air intake grille is provided on the top surface of the hollow cone, which is inserted into the hollow cone from the chamber inside the outer shell through the air pressure buffer cover and has an interference fit with the hollow cone. On the one hand, the air pressure buffer cover can press and fit the waterproof and breathable membrane on the inner wall of the air intake grille, so as to prevent the waterproof and breathable membrane and the inner wall of the air intake grille from not fitting tightly, causing water molecules to enter the inner chamber of the outer shell, or to prevent the waterproof and breathable membrane from falling off due to the impact of high-pressure gas. On the other hand, the air intake duct and a plurality of air vents of the air pressure buffer cover cooperate to divert the high-speed air intake, thereby reducing the flow rate of the high-speed gas, so that it can be gently diffused to the hydrogen chip in the inner chamber of the outer shell, thereby reducing interference with the hydrogen chip.

[0026] 3. The waterproof and breathable hydrogen sensor device of the utility model has a multi-protection sealing structure design by reasonably setting the structure of the side connection between the bottom cover and the shell, thereby ensuring the sealing between the shell and the bottom cover, thereby ensuring the sealing of its internal space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the exploded structure diagram of the utility model;

[0028] Figure 2 for Figure 1 The combined state diagram of

[0029] Figure 3 for Figure 2 A top view of

[0030] Figure 4 for Figure 3 The cutaway stereogram in the middle AA direction;

[0031] Figure 5 for Figure 1 Internal structure diagram of the middle shell;

[0032] Figure 6 for Figure 5 A top view of

[0033] The markings in the figure are:

[0034] 1. Shell, 2. Waterproof breathable membrane, 3. Air pressure buffer cover, 4. PCB board, 5. Bottom cover;

[0035] 61, first sealing ring, 62, second sealing ring

[0036] 101, air intake grille, 102, interface, 1021, PIN needle, 1022, positioning bar, 1023, interface card block, 103, shell card block, 104, fixed foot, 105, air pressure buffer cover installation slot, 106, PCB positioning column, 107, second sealing ring card slot, 108, bottom cover inner baffle card slot;

[0037] 301, air inlet, 302, vent;

[0038] 401. Hydrogen chip;

[0039] 501, elastic buckle, 502, bottom cover outer baffle, 503, bottom cover inner baffle, 504, outer shell slot. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] like Figure 1-6 As shown, the utility model provides a waterproof and breathable hydrogen sensor device, including a housing 1, a waterproof and breathable membrane 2, an air pressure buffer cover 3, a PCB board 4 and a bottom cover 5.

[0043] The housing 1 is provided with an air intake grille 101 which is regularly formed by a plurality of vents. The housing is provided with an internal chamber for accommodating an air pressure buffer cover and a PCB board 4. The internal chamber is connected to the external environment through the air intake grille 101.

[0044] Furthermore, the bottom cover 5 is installed at the bottom end of the outer shell 1, and the waterproof breathable membrane 2, the air pressure buffer cover 3 and the PCB board 4 are regularly sealed in the internal space of the outer shell 1 and the bottom cover 5 through a sealing structure between the bottom cover 5 and the outer shell 1, that is, sealed in the internal chamber of the outer shell.

[0045] In one embodiment, the housing and the bottom cover are quickly snapped together and fixedly installed via a snap-fit ​​structure.

[0046] like Figure 1 As shown, at least two plane surfaces of the four side surfaces of the housing 1 are regularly provided with a plurality of protruding housing blocks 103, and the four side surfaces of the bottom cover 5 are regularly provided with a plurality of elastic buckles 501 cooperating therewith at the positions of the protruding housing buckles 103 on the housing 1. The housing 1 and the bottom cover 5 are clamped together by the housing blocks 103 and the elastic buckles 501 to achieve clamping and fixing.

[0047] Further, in one embodiment, if Figure 1As shown, two protruding shell blocks 103 are regularly arranged on the four sides of the shell 1, and correspondingly, an equal number of mutually cooperating elastic buckles 501 are regularly arranged on the four sides of the bottom cover 5 at the positions of the shell blocks 103 on the shell 1.

[0048] Of course, the elastic buckle and the protruding block can be arranged in reverse, with the elastic buckle being arranged on the housing 1 and the protruding block being arranged on the bottom cover 5 .

[0049] Further, such as Figure 2 As shown, in order to facilitate the fixed installation of the hydrogen sensor device of the utility model, one or more fixed feet 104 are regularly arranged on the side of the housing 1. The fixed feet 104 extend outward from the side of the housing 1 and are regularly arranged with fixed installation holes for fasteners to pass through.

[0050] Furthermore, the housing block 103 or the elastic buckle is arranged to avoid the fixed foot 104 .

[0051] Furthermore, the waterproof breathable membrane 2 is arranged below the air intake grille 101 and attached to the inner wall of the air intake grille 101 to seal the air intake grille. The waterproof breathable membrane 2 is a thin waterproof breathable membrane. The air intake grille passes through the waterproof breathable membrane 2, which can ensure that the gas passes through the air intake grille and the waterproof breathable membrane normally and enters the internal chamber of the housing, and blocks the entry of water molecules.

[0052] Furthermore, the air pressure buffer cover 3 is arranged and installed in the inner chamber of the housing, the front end of the air pressure buffer cover is the air inlet end, and the rear end is the air outlet end. The air inlet end of the air pressure buffer cover presses the waterproof breathable membrane 2 and the inner wall of the air inlet grille 101 to prevent the waterproof breathable membrane from falling off, thereby improving the sealing of the waterproof breathable membrane. The air outlet end of the air pressure buffer cover extends into the inner chamber of the housing.

[0053] Furthermore, the air pressure buffer cover 3 includes an air inlet 301 for gas to flow in and out and a plurality of vents 302 for gas diversion. The air inlet 301 is arranged below the air inlet grille 101 and communicates with the external environment through the waterproof breathable membrane 2. The plurality of vents 302 are regularly arranged at the air outlet end of the air pressure buffer cover 3 and connect the air inlet 301 and the internal chamber of the shell. The air inlet 301 communicates with the internal chamber of the shell through the plurality of vents 302. The gas in the external environment passes through the air inlet grille 101 and the waterproof breathable membrane 2 in turn and then enters the air inlet 301. The gas entering the air inlet 301 is diverted through the plurality of vents 302 and slowly diffuses into the internal chamber of the shell.

[0054] Furthermore, the PCB board 4 is arranged below the air pressure buffer cover 3 , and the hydrogen chip 401 and peripheral components are regularly arranged and welded on the PCB board 4 .

[0055] Because high-speed flowing gas will interfere with the measurement of the hydrogen chip, for this reason, further, a plurality of vent holes 302 are arranged away from the hydrogen chip 401, and a plurality of vent holes 302 are arranged on the side of the air pressure buffer cover 3. The surface of the air pressure buffer cover facing the hydrogen chip 401 is closed, that is, Figure 1 The bottom surface of the medium pressure buffer cover 3. This ensures that the high-speed flowing gas will diffuse gently onto the hydrogen chip after passing through the pressure buffer cover, thereby reducing interference with its detection.

[0056] Further, such as Figure 1 and Figure 4 As shown, in order to facilitate power supply and signal transmission, the housing 1 is also provided with an interface 102. A plurality of PIN pins 1021 are regularly arranged in the interface 102, one end of the plurality of PIN pins 1021 is arranged in the interface 102, and the other end extends into the inner chamber of the housing to be electrically connected to the pads on the PCB board 4, so that signals are transmitted with the host through the plurality of PIN pins in the interface, and power is supplied to the PCB board 4.

[0057] like Figure 4 and Figure 5 As shown, in order to facilitate the installation and fixation of the air pressure buffer cover 3, and to prevent the waterproof breathable membrane from not fitting tightly and causing water molecules to enter the internal chamber of the shell, and the waterproof breathable membrane from falling off under high air pressure or vibration, a raised hollow cone 11 is provided at the upper end of the shell 1.

[0058] The air intake grille 101 is arranged on the top surface of the hollow truncated cone 11, and the inner chamber of the hollow truncated cone 11 is connected with the inner chamber of the shell, thereby forming an air pressure buffer cover installation groove 105. The air pressure buffer cover 3 is interference fit with the inner wall of the hollow truncated cone 11, and the air intake grille 101 with its front end facing upward and aligned with the top surface of the hollow truncated cone is installed in the air pressure buffer cover installation groove 105.

[0059] Furthermore, after the air pressure buffer cover 3 is installed in the air pressure buffer cover installation groove 105 , the annular top surface of the front opening air inlet end thereof presses the waterproof breathable membrane 2 and the inner wall of the air inlet grille 101 tightly together.

[0060] Further, such as Figure 5 As shown, the height of the air pressure buffer cover 3 is greater than the depth of the air pressure buffer cover mounting groove 105. When the air pressure buffer cover 3 is installed in the air pressure buffer cover mounting groove 105, the rear end air outlet end of the air pressure buffer cover extends into the internal chamber of the shell, thereby ensuring that a plurality of air vents 301 on the rear end air outlet end of the air pressure buffer cover extend out of the air pressure buffer cover mounting groove 105 and communicate with the internal chamber of the shell.

[0061] Further, such as Figure 4As shown, in order to ensure the sealing between the outer surface of the air pressure buffer cover 3 and the inner wall of the hollow truncated cone 11 , a first sealing ring 61 is provided between the outer surface of the air pressure buffer cover 3 and the inner wall of the hollow truncated cone 11 .

[0062] In one embodiment, a first sealing ring installation groove is provided on the outer surface of the air pressure buffer cover 3, and the first sealing ring 61 is installed in the first sealing ring installation groove on the outer surface thereof.

[0063] Further, such as Figure 4 As shown, in order to ensure the sealing between the shell 1 and the bottom cover 5, the four sides of the bottom cover 5 are regularly provided with a bottom cover outer baffle plate 502 and a bottom cover inner baffle plate 503 from the outside to the inside. A shell card slot 504 for the four sides of the shell to be inserted is formed between the bottom cover outer baffle plate 502 and the bottom cover inner baffle plate 503. The four sides of the shell 1 are inserted into the shell card slot 504 at the upper end of the bottom cover 5, and are clamped, fixed and sealed by the bottom cover outer baffle plate and the bottom cover inner baffle plate, so as to be quickly spliced ​​with the bottom cover 5.

[0064] Furthermore, the four side surfaces of the housing, front, back, left, and right, are interference-fitted with the housing slot 504, thereby ensuring the sealing between the housing and the bottom cover.

[0065] Furthermore, the height of the bottom cover inner baffle 503 is higher than the height of the bottom cover outer baffle 502, thereby further preventing external water molecules from entering the internal chamber of the shell, thereby ensuring the sealing of the internal chamber of the shell.

[0066] Furthermore, a second sealing ring 62 is provided between the outer shell 1 and the bottom cover 5, thereby further improving the sealing performance between the outer shell and the bottom cover.

[0067] like Figure 4 and Figure 5 As shown, in one embodiment, the bottom ends of the four side surfaces of the housing 1 are provided with second sealing ring grooves 107, and the second sealing ring 62 is installed in the second sealing ring grooves 107. When the four side surfaces of the housing are inserted into the housing groove 504 at the upper end of the bottom cover, the bottom ends of the four side surfaces are in contact and sealed with the inner wall of the housing groove 504 through the second sealing ring 62.

[0068] like Figure 4-6As shown, PCB positioning posts 106 for positioning and supporting the PCB board 4 are regularly arranged at the four corners of the internal chamber of the housing 1. The PCB positioning posts 106 are arranged without contacting the inner wall of the internal chamber of the housing, so that a bottom cover inner baffle card slot 108 is formed between the PCB positioning posts 106 and the inner wall of the internal chamber of the housing, and the bottom cover inner baffle 503 is inserted into the bottom cover inner baffle card slot 108. The bottom cover inner baffle 503 is clamped and clamped in the bottom cover inner baffle card slot 108 by the PCB positioning posts 106 at the four corners, thereby preventing the deformation of the bottom cover inner baffle after long-term use, which causes the problem of poor sealing.

[0069] Further, such as Figure 2 As shown, the outer side surface of the interface 102 is regularly provided with a plurality of positioning bars 1022 along the insertion direction thereof, and the plurality of positioning bars 1022 can facilitate the interface 102 to connect with other external data ports. In addition, in order to prevent the interface 102 and other data ports from loosening or disconnecting due to shaking or vibration, the outer side surface of the interface 102 is regularly provided with one or more raised interface card blocks 1023, so as to cooperate with the card slots in other data ports to achieve card engagement and fixed connection.

[0070] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof and breathable hydrogen sensor device, characterized in that: It includes a shell, a waterproof and breathable membrane for waterproofing and breathability, a pressure buffer cover for gas diversion, a PCB board carrying a hydrogen chip, and a bottom cover; The shell is regularly provided with an air intake grille, and an internal chamber of the shell is provided inside the internal chamber of the shell for accommodating the air pressure buffer cover and the PCB board, and the internal chamber of the shell is connected to the external environment through the air intake grille; The waterproof and breathable membrane is attached to the inner wall of the air intake grille to seal the air intake grille; The air pressure buffer cover is arranged and installed in the inner chamber of the shell, the air inlet end of the air pressure buffer cover presses the waterproof breathable membrane and the inner wall of the air inlet grille, and the air outlet end of the air pressure buffer cover is arranged in the inner chamber of the shell; the air pressure buffer cover includes an air inlet duct and a plurality of air vents for diversion, the air inlet duct extends from the air inlet end of the air pressure buffer cover to its air outlet end, the front end of the air inlet duct is connected to the external environment through the waterproof breathable membrane and the air inlet grille in turn, and the rear end of the air inlet duct is connected to the inner chamber of the shell through the plurality of air vents, the plurality of air vents are regularly arranged at the air outlet end of the air pressure buffer cover, and the plurality of air vents are arranged away from the hydrogen chip; The hydrogen chip is arranged below the air pressure buffer cover, and the air outlet end of the air pressure buffer cover is sealed to one side of the hydrogen chip; The bottom cover is installed at the bottom end of the shell, and the waterproof and breathable membrane, the air pressure buffer cover and the PCB board are regularly sealed in the inner chamber of the shell through a sealing structure between the bottom cover and the shell.

2. The waterproof and breathable hydrogen sensor device according to claim 1, characterized in that: A protruding hollow cone is provided at the upper end of the shell, and the air inlet grille is provided on the top surface of the hollow cone. The internal chamber of the hollow cone is communicated with the internal chamber of the shell to form an air pressure buffer cover mounting groove for mounting the air pressure buffer cover; the air pressure buffer cover is installed in the air pressure buffer cover mounting groove by interference fit with the inner wall of the hollow cone, and the air inlet end at the front end of the air pressure buffer cover presses the waterproof and breathable membrane tightly against the inner wall of the air inlet grille, and the air outlet end at the rear end extends into the internal chamber of the shell to expose the plurality of air vents that are communicated with the internal chamber of the shell.

3. The waterproof and breathable hydrogen sensor device according to claim 2, characterized in that: The plurality of vent holes are regularly arranged on the side of the gas outlet end of the air pressure buffer cover to avoid the hydrogen chip below the bottom surface of the gas outlet end.

4. The waterproof and breathable hydrogen sensor device according to claim 3, characterized in that: A sealing ring for sealing is arranged between the air pressure buffer cover and the hollow truncated cone.

5. The waterproof and breathable hydrogen sensor device according to claim 1, characterized in that: The four sides of the bottom cover are regularly provided with a bottom cover outer baffle plate and a bottom cover inner baffle plate from the outside to the inside, and a shell card slot for the four sides of the shell to be inserted into is formed between the bottom cover outer baffle plate and the bottom cover inner baffle plate. The four sides of the shell are inserted into the shell card slot and are clamped, fixed and sealed by the bottom cover outer baffle plate and the bottom cover inner baffle plate.

6. The waterproof and breathable hydrogen sensor device according to claim 5, characterized in that: PCB positioning posts for positioning and supporting the PCB board are regularly arranged at the four corners of the internal chamber of the shell. The PCB positioning posts are arranged without contacting the inner wall of the internal chamber of the shell, so that a bottom cover inner baffle groove for clamping the bottom cover inner baffle is formed between the PCB positioning posts and the inner wall of the internal chamber of the shell. When the shell is inserted into the shell groove on the bottom cover, the bottom cover inner baffle on the inner side of the bottom cover is inserted into the bottom cover inner baffle groove.

7. The waterproof and breathable hydrogen sensor device according to claim 5, characterized in that: The height of the inner baffle plate of the bottom cover is higher than the height of the outer baffle plate of the bottom cover.

8. The waterproof and breathable hydrogen sensor device according to claim 7, characterized in that: The bottom ends of the four sides of the shell are provided with sealing ring grooves and are installed with sealing rings. The four sides of the shell are sealed with the shell grooves on the bottom cover through the sealing rings.

9. The waterproof and breathable hydrogen sensor device according to claim 1, characterized in that: The shell is also provided with an interface, in which a plurality of PIN pins are regularly arranged, one end of the plurality of PIN pins is arranged in the interface, and the other end thereof extends into the inner chamber of the shell to be electrically connected with the pads on the PCB board.

10. The waterproof and breathable hydrogen sensor device according to claim 9, characterized in that: The outer surface or inner wall of the interface is regularly provided with a plurality of positioning strips for quick positioning along its insertion direction, and the outer surface or inner wall of the interface is also regularly provided with a card block or a card slot for engaging with an external data interface.

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