Breather valve and battery box

Abstract

The utility model discloses a kind of vent valve and battery box, it is related to valve body technical field, wherein, the vent valve includes valve body, valve cover and venting membrane, valve body is perforated with gas outlet;Valve cover is perforated with the venting hole that communicates with outside, valve cover cover is located in valve body, and with valve body detachable connection, venting hole communicates gas outlet;Venting membrane cover is located in gas outlet.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, and in particular to a breather valve and a battery box. Background Technology

[0002] In equipment or spaces that require gas exchange, such as battery boxes, vent valves are important components for achieving internal and external air pressure balance and ensuring the normal operation of the equipment.

[0003] However, in related technologies, external dust, moisture, and other impurities can easily enter the battery box through the vent valve, contaminating the internal environment and potentially causing battery malfunctions. This not only increases maintenance difficulty but also raises operating costs. Utility Model Content

[0004] The main purpose of this utility model is to propose a vent valve and a battery box, which aims to solve the technical problems in related technologies, such as the vent valve being prone to contamination or malfunction due to impurities, and the difficulty and high cost of maintenance.

[0005] To achieve the above objectives, the present invention proposes a vent valve, which includes:

[0006] The valve body has a through-hole for air outlet;

[0007] The valve cover has a vent hole that connects to the outside. The valve cover is placed over the valve body and is detachably connected to the valve body. The vent hole is connected to the air outlet.

[0008] A breathable membrane is provided over the air outlet.

[0009] In one embodiment, the valve cover is polygonal in shape and is configured to be positioned and fixed to the battery compartment.

[0010] In one embodiment, the valve cover is a hexagonal prism structure, and the surface of the valve cover has six planes connected in sequence, with a groove formed at the connection between two adjacent planes.

[0011] In one embodiment, the vent valve further includes a seal that is fitted onto the valve body and is configured to seal the connection between the valve body and the side wall of the battery box when the vent valve is fixed to the side wall of the battery box.

[0012] In one embodiment, the seal has a plurality of protruding ridges along its axial direction.

[0013] In one embodiment, the valve cover has a plurality of vent holes on its side wall, and the plurality of vent holes are spaced apart.

[0014] In one embodiment, the valve cover is provided with a plurality of snap fasteners along its circumferential inner wall, and the valve body is provided with a plurality of snap-fit ​​portions at one end near the valve cover, with each snap fastener engaging with a snap-fit ​​portion.

[0015] In one embodiment, the outer wall of the valve body is provided with external threads, and the vent valve further includes a fixing nut, which is sleeved on the outer wall of the valve body and threadedly connected to the external threads.

[0016] In one embodiment, the breathable membrane is made of polytetrafluoroethylene.

[0017] In one embodiment, the battery box includes a housing and a vent valve as described above, the vent valve being disposed within the housing.

[0018] The technical solution of this utility model features a valve body with a through-hole serving as the main channel for gas flow. A valve cover has a vent hole connecting to the outside and is detachably connected to the valve body, allowing the vent hole to communicate with the outlet and forming a complete ventilation path. A breathable membrane is placed over the outlet to filter and block the gas passing through. This breathable membrane effectively prevents external dust, moisture, and other impurities from entering the valve body while ensuring smooth gas passage, ensuring the valve's interior and connected equipment or space remain uncontaminated and improving ventilation cleanliness. The detachable connection between the valve cover and valve body facilitates maintenance or replacement when the breathable membrane needs cleaning or replacement, or when the valve cover or valve body is damaged, reducing maintenance costs. The connection between the valve body's outlet and the valve cover's vent hole creates a smooth gas flow channel, which, combined with the breathable membrane's permeability, enables effective exchange of internal and external gases. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the vent valve provided by this utility model;

[0021] Figure 2 A top view of the vent valve provided by this utility model;

[0022] Figure 3 This is a cross-sectional view of the structure of the vent valve provided by this utility model;

[0023] Figure 4An exploded view of the vent valve provided by this utility model.

[0024] Explanation of icon numbers:

[0025] 100. Vent valve; 1. Valve body; 11. Vent outlet; 12. External thread; 13. Snap-fit ​​part; 2. Valve cover; 21. Vent hole; 22. Groove; 23. Snap fastener; 3. Vent membrane; 4. Sealing element; 5. Fixing nut.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a breather valve 100.

[0031] Please see Figure 1 and Figure 3In one embodiment of the present invention, the vent valve 100 includes a valve body 1, a valve cover 2, and a vent membrane 3. The valve body 1 has a through-hole 11; the valve cover 2 has a vent hole 21 that communicates with the outside, the valve cover 2 is covered on the valve body 1 and is detachably connected to the valve body 1, and the vent hole 21 communicates with the vent 11; the vent membrane 3 is covered on the vent 11.

[0032] In this embodiment, the vent valve 100 can be applied to high-sealing products such as electric vehicle battery pack systems and battery boxes. The vent valve 100 achieves internal and external pressure balance within the battery pack system, ensuring that under normal operating conditions, the product will not fail to seal due to pressure differences exceeding its tolerance capacity when the external environment changes. The following explanation uses a battery box as an example. Figure 1 It should be noted that the valve cover 2 is fitted over the valve body 1, and the valve cover 2 and the valve body 1 can be connected by means including but not limited to threaded connection 12, snap-fit ​​connection, etc., which are not limited here. The vent 11 is used to balance the air pressure. When the vent valve 100 is applied to the battery box, the vent 11 connects the vent hole 21 to the internal environment of the battery box. The vent hole 21 connects the outside and the vent 11 to ensure that the gas can be discharged smoothly. The vent 11 and the vent hole 21 work together to ensure that the gas in the battery box can be discharged through the vent valve 100. It is understood that the valve cover 2 can have a vent hole 21 on its top surface, or it can have a vent hole 21 on its side wall, which are not limited here. The breathable membrane 3 is used to achieve air pressure balance inside and outside the battery box. It is a material with a microporous structure. The micropore size is small enough to allow gas molecules to pass through, but can block liquids, dust, bacteria and other particulate matter. When gas is generated inside the device, it is discharged to the outside through the outlet 11 of the valve body 1 and the breathable membrane 3, while external contaminants are blocked by the breathable membrane 3. It is understood that the breathable membrane 3 can be fixed by means of bonding or pressing, but bonding is preferred here, using adhesives such as glue or sealant to fix the breathable membrane 3 to the edge of the outlet 11. The material of the breathable membrane 3 includes, but is not limited to, polytetrafluoroethylene, polyvinylidene fluoride, polypropylene, and polyethylene.

[0033] The technical solution of this utility model is that the valve body 1 has an outlet 11 through which the gas flows, serving as the main channel for gas circulation; the valve cover 2 has a vent 21 that connects to the outside, and is covered by the valve body 1 and detachably connected to the valve body 1, so that the vent 21 is connected to the outlet 11 to form a complete ventilation path; the vent membrane 3 is covered by the outlet 11 to filter and block the gas passing through the outlet 11. The breathable membrane 3 is placed over the air outlet 11, which can effectively block dust, water vapor and other impurities from entering the valve body 1 while ensuring smooth gas passage. This ensures that the inside of the breathable valve 100 and the equipment or space connected to it are not contaminated, thus improving the cleanliness of the breathable gas. The valve cover 2 is detachably connected to the valve body 1. When the breathable membrane 3 needs to be cleaned or replaced, or when the valve cover 2 or valve body 1 is damaged, it is easy to disassemble for maintenance or replacement, reducing maintenance costs. The air outlet 11 of the valve body 1 is connected to the vent hole 21 of the valve cover 2, forming a smooth gas flow channel. Combined with the breathable characteristics of the breathable membrane 3, it can achieve effective exchange of internal and external gases.

[0034] In one embodiment of this utility model, the valve cover 2 is polygonal in shape and is configured to be fixed in position with the battery box.

[0035] In this embodiment, it should be noted that, in conjunction with Figure 1 and Figure 2 To further increase stability, the valve cover 2 is polygonal. In one embodiment, the valve cover 2 is quadrilateral, and the connecting surface of the quadrilateral is arc-shaped. In the battery box, the quadrilateral valve cover 2 can withstand forces from different directions, reducing local stress concentration.

[0036] In one embodiment of this utility model, the valve cover 2 is a hexagonal prism structure, and the surface of the valve cover 2 has six planes connected in sequence, with a groove 22 provided at the connection between two adjacent planes.

[0037] In this embodiment, it should be noted that, in conjunction with Figure 2 To further enhance stability and facilitate installation and disassembly, the valve cover 2 has six sequentially connected planes on its surface. A groove 22 is formed at the junction of adjacent planes. This groove 22 allows a wrench or clamp to more easily grip the valve cover 2, improving the efficiency of installation and disassembly. It is understandable that...

[0038] In one embodiment of the present invention, the vent valve 100 further includes a sealing element 4, which is sleeved on the valve body 1. The sealing element 4 is configured to seal the connection between the valve body 1 and the side wall of the battery box when the vent valve 100 is fixed to the side wall of the battery box.

[0039] In this embodiment, combined with Figure 3 and Figure 4To enhance sealing, when the vent valve 100 is applied in the battery box, the seal 4 effectively prevents gas and liquid leakage between the valve body 1 and the side wall of the battery box, ensuring the sealing performance of the vent valve 100. The type of seal 4 includes, but is not limited to, sealing rings, sealing gaskets, etc., with sealing gaskets being preferred here. Its material includes, but is not limited to, rubber, silicone, etc., and is not limited here.

[0040] In one embodiment of this utility model, the sealing member 4 has multiple protruding ridges along its axial direction.

[0041] In this embodiment, combined with Figure 3 To further enhance sealing performance, multiple ridges are provided axially on the seal 4. The presence of these ridges increases the contact area between the seal 4 and the valve body 1 or the side wall of the battery box, thereby improving sealing performance. Simultaneously, the multiple ridges can better adapt to uneven contact surfaces, maintaining a good sealing effect even in the presence of minor dimensional deviations or surface irregularities.

[0042] In one embodiment of this utility model, the side wall of the valve cover 2 is provided with a plurality of vent holes 21, which are spaced apart.

[0043] In this embodiment, combined with Figure 1 and Figure 3 To ensure that the gas between the external environment connected to the vent valve 100 and the battery box remains ventilated, multiple vent holes 21 are provided on the side wall of the valve cover 2. The size of the vent holes 21 is determined according to the size of the valve cover 2, and the number of vent holes 21 may include two, three, etc., and is not limited here. It is understandable that, combined with... Figure 3 The ventilation direction of the vent valve 100 is along Figure 3 The air vents in the direction of the dotted arrow in the diagram, passing through the air outlet 11 of the valve body 1 to the vent membrane 3, and then to the vent hole 21. Specifically, two vent holes 21 are provided on the side wall of the valve cover 2. The two vent holes 21 are spaced apart, increasing the gas flow path and thus improving the venting efficiency; they also ensure that the gas is evenly distributed inside and outside the valve cover 2, avoiding excessively high or low local pressure. The two vent holes 21 are provided on adjacent surfaces of the valve cover 2, which can better utilize the side wall space of the valve cover 2 and improve space utilization.

[0044] In one embodiment of the present invention, the valve cover 2 is provided with a plurality of snap fasteners 23 along its circumferential inner wall, and the valve body 1 is provided with a plurality of snap-fit ​​parts 13 at one end near the valve cover 2, and each snap fastener 23 is engaged with a snap-fit ​​part 13.

[0045] In this embodiment, combined with Figure 4In order to achieve quick assembly of valve cover 2 and valve body 1, valve cover 2 is provided with multiple snap fasteners 23 along its circumferential inner wall, and valve body 1 is provided with multiple snap-fit ​​parts 13 at one end near valve cover 2. It can be understood that the snap-fit ​​part 13 is actually a snap-fit ​​edge formed by the edge of valve body 1 extending outward towards valve body 1. When the snap fasteners 23 on valve cover 2 abut against the lower edge of the snap-fit ​​edge, the snap-fit ​​fit between valve cover 2 and valve body 1 is ensured.

[0046] In one embodiment of this utility model, the outer wall of the valve body 1 is provided with an external thread 12, and the vent valve 100 also includes a fixing nut 5, which is sleeved on the outer wall of the valve body 1 and threadedly connected to the external thread 12.

[0047] In this embodiment, combined with Figure 3 To enhance stability, the outer wall of the valve body 1 is provided with external threads 12. A fixing nut 5 is fitted onto the outer wall of the valve body 1 and threadedly connected to the external threads 12, used to secure the valve body 1 to other structures. The fixing nut 5 achieves a stable connection between the valve body 1 and other structures (battery box). It is understood that the fixing nut 5 is made of nylon, which prevents current leakage and improves safety.

[0048] In one embodiment of this utility model, the breathable membrane 3 is made of polytetrafluoroethylene.

[0049] In this embodiment, the breathable membrane 3 made of polytetrafluoroethylene has a microporous structure. These micropores allow gas molecules to pass through but block liquid penetration, thereby achieving waterproof and breathable functions, while also achieving better waterproof and dustproof effects.

[0050] This utility model also proposes a battery box, which includes a box body and a vent valve 100 as described above. The specific structure of the vent valve 100 is as described in the above embodiments. Since this battery box adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The vent valve 100 is installed through the box body. It can be understood that the vent valve 100 is installed on the outer wall of the box body, the valve cover 2 of the vent valve 100 is located outside the battery box, and the sealing element 4 of the vent valve 100, under the tightening of the fixing nut 5, seals the gap between the vent valve 100 and the battery box, thereby achieving air pressure balance inside and outside the battery box through the vent valve.

[0051] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A vent valve, characterized in that, The vent valve includes: The valve body has a through-hole for air outlet; The valve cover has a vent hole that connects to the outside. The valve cover is placed over the valve body and is detachably connected to the valve body. The vent hole is connected to the air outlet. A breathable membrane is provided over the air outlet.

2. The vent valve as described in claim 1, characterized in that, The valve cover is polygonal in shape and is configured to be fixed in position with the battery box.

3. The vent valve as described in claim 2, characterized in that, The valve cover has a hexagonal prism structure, and the surface of the valve cover has six planes connected in sequence, with a groove formed at the connection between two adjacent planes.

4. The vent valve as described in any one of claims 1 to 3, characterized in that, The vent valve also includes a sealing element, which is sleeved on the valve body and configured to seal the connection between the valve body and the side wall of the battery box when the vent valve is fixed to the side wall of the battery box.

5. The vent valve as described in claim 4, characterized in that, The seal has multiple protruding ridges along its axial direction.

6. The vent valve as described in any one of claims 1 to 3, characterized in that, The valve cover has multiple vent holes on its side wall, and the multiple vent holes are spaced apart.

7. The vent valve as described in any one of claims 1 to 3, characterized in that, The valve cover is provided with a plurality of snap fasteners along its circumferential inner wall, and the valve body is provided with a plurality of snap-fit ​​parts at one end near the valve cover, with each snap fastener engaging with a snap-fit ​​part.

8. The vent valve as described in any one of claims 1 to 3, characterized in that, The outer wall of the valve body is provided with external threads, and the vent valve also includes a fixing nut, which is sleeved on the outer wall of the valve body and threadedly connected to the external threads.

9. The vent valve as described in any one of claims 1 to 3, characterized in that, The breathable membrane is made of polytetrafluoroethylene.

10. A battery box, characterized in that, The battery box includes: Box; The vent valve as described in any one of claims 1 to 9, wherein the vent valve passes through the housing.

Images