Waterproof, breathable valve, battery pack, and vehicle

Abstract

The utility model discloses a waterproof and breathable valve, battery pack and vehicle, waterproof and breathable valve includes: valve body, the air passage is formed in the valve body, film material subassembly, film material subassembly is located in the air passage and film material subassembly includes support piece and waterproof and breathable membrane, waterproof and breathable membrane is connected in one side of support piece, the pressure ring, the pressure ring is fixed in the air passage, and waterproof and breathable membrane's one end of the axial direction of pressure ring is pressed in the side of the support piece. According to the waterproof and breathable valve of the utility model embodiment, waterproof and breathable membrane is connected with support piece, and waterproof and breathable membrane is pressed tightly through the pressure ring, which can improve the sealing effect of waterproof and breathable valve, and can avoid that waterproof and breathable membrane is pressed and broken.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a waterproof and breathable valve, a battery pack, and a vehicle. Background Technology

[0002] Battery packs in related technologies are typically equipped with waterproof and breathable valves. These valves can balance the pressure inside and outside the battery pack. The waterproof and breathable valves usually include a valve body and a waterproof and breathable membrane. The waterproof and breathable membrane is sealed to the valve body to isolate the inside and outside of the valve body through the waterproof and breathable membrane, preventing external water, dust and other pollutants from entering the battery pack.

[0003] Some waterproof and breathable valves use a pressure ring and valve body to press the waterproof and breathable membrane together to achieve a seal. However, this method requires high precision in pressing; excessive pressing force will damage the waterproof and breathable membrane, while insufficient pressing force will fail to meet the sealing requirements. Another waterproof and breathable valve connects the waterproof and breathable membrane to a plastic support and then fixes it to the valve body. However, the connection strength between the waterproof and breathable membrane and the plastic support cannot meet the high-strength sealing requirements, and the two are prone to separation, leading to seal failure. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a waterproof and breathable valve, which connects a waterproof and breathable membrane to a support member and presses the membrane tightly with a pressure ring, thereby improving the sealing effect of the waterproof and breathable valve and preventing the membrane from being damaged.

[0005] According to this utility model, a battery pack having the above-mentioned waterproof and breathable valve is also proposed.

[0006] According to this utility model, a vehicle having the above-mentioned battery pack is also proposed.

[0007] To achieve the above objectives, a waterproof and breathable valve is provided according to an embodiment of the first aspect of this utility model, comprising: a valve body, wherein an air passage is formed within the valve body; a membrane assembly, wherein the membrane assembly is disposed within the air passage and includes a support member and a waterproof and breathable membrane, wherein the waterproof and breathable membrane is connected to one side of the support member; and a pressure ring, wherein the pressure ring is fixed within the air passage, and one axial end of the pressure ring is pressed against the side of the waterproof and breathable membrane facing away from the support member.

[0008] Therefore, the waterproof and breathable membrane of the waterproof and breathable valve according to this utility model can improve the sealing effect of the waterproof and breathable valve and prevent the waterproof and breathable membrane from being crushed by the pressure ring by connecting the waterproof and breathable membrane to the support member.

[0009] According to some embodiments of the present invention, a sealing step is provided in the air passage, the sealing step extends in a ring shape along the circumference of the air passage, and the side of the support member facing away from the waterproof and breathable membrane abuts against the sealing step.

[0010] According to some embodiments of the present invention, the air passage is further provided with an annular sealing groove, the annular sealing groove and the sealing step are arranged radially along the valve body, and a first sealing ring is provided in the annular sealing groove. The first sealing ring abuts against the membrane material assembly to seal the gap between the membrane material assembly and the sealing step.

[0011] According to some embodiments of the present invention, the support member is constructed as a bracket, the bracket extends in a ring along the circumference of the air passage, and the bracket is connected to the side of the waterproof and breathable membrane facing the sealing step.

[0012] According to some embodiments of this utility model, the waterproof and breathable membrane is welded to the bracket.

[0013] According to some embodiments of the present invention, the welding area between the waterproof and breathable membrane and the bracket is adjacent to the radial inner edge of the bracket, and the waterproof and breathable membrane extends radially outward beyond the welding area along the bracket.

[0014] According to some embodiments of the present invention, the width of the welding area along the radial direction of the bracket is D, and D satisfies: 1mm≤D≤3mm.

[0015] According to some embodiments of the present invention, the support member is constructed as a buffer layer, the buffer layer extends in a ring shape along the circumference of the air passage, and the buffer layer is connected to the side of the waterproof and breathable membrane facing the sealing step.

[0016] According to some embodiments of the present invention, the width of the buffer layer is not less than the width of the sealing step along the radial direction of the buffer layer.

[0017] According to some embodiments of the present invention, the waterproof and breathable valve further includes: a flexible member, the flexible member extending in a ring along the circumference of the air passage, and the flexible member being connected to the side of the pressure ring facing the waterproof and breathable membrane.

[0018] According to some embodiments of the present invention, the waterproof and breathable valve further includes: a pin, the air passage having an air inlet and an air outlet, the pin being fixed inside the air passage, and the pin being located on the side of the waterproof and breathable membrane facing the air outlet, and the pressure ring being located on the side of the waterproof and breathable membrane facing away from the pin.

[0019] A battery pack is provided according to a second aspect of the present invention, the battery pack including the waterproof and breathable valve described in the first aspect of the present invention.

[0020] According to the second aspect of the present invention, the battery pack can utilize the waterproof and breathable valve according to the first aspect of the present invention. The waterproof and breathable valve connects the waterproof and breathable membrane to the support member and presses the waterproof and breathable membrane with a pressure ring, which can improve the sealing effect of the waterproof and breathable valve and prevent the waterproof and breathable membrane from being crushed.

[0021] A vehicle is provided according to a third aspect of the present invention, the vehicle including a battery pack according to a second aspect of the present invention.

[0022] According to the third aspect embodiment of the present invention, the battery pack can be used in accordance with the second aspect embodiment of the present invention. The waterproof and breathable valve connects the waterproof and breathable membrane to the support member and presses the waterproof and breathable membrane with a pressure ring, which can improve the sealing effect of the waterproof and breathable valve and prevent the waterproof and breathable membrane from being crushed.

[0023] 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

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of a waterproof and breathable valve according to an embodiment of the present utility model; Figure 2 This is an exploded view of the waterproof and breathable valve according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of a waterproof and breathable valve according to an embodiment of the present utility model; Figure 4 This is a cross-sectional view of a waterproof and breathable valve according to another embodiment of the present invention; Figure 5 This is a cross-sectional view of a membrane material assembly according to an embodiment of the present utility model; Figure 6 yes Figure 5 An enlarged schematic diagram of the structure at point A; Figure 7 This is a cross-sectional view of a pressure ring, flexible member, and membrane assembly according to another embodiment of the present invention; Figure 8 yes Figure 7 An enlarged schematic diagram of the structure at point B; Figure 9This is a schematic diagram of the valve body according to an embodiment of the present utility model.

[0025] Figure label: 1. Waterproof and breathable valve; 100. Valve body; 110. Air passage; 111. Air inlet; 112. Air outlet; 113. Sealing step; 114. Annular sealing groove; 115. First sealing ring; 120. Ejector pin; 130. Connecting part; 131. Outer sealing groove; 132. Second sealing ring; 200. Membrane material components; 300. Support component; 310. Bracket; 311. Welding area; 320. Buffer layer; 400, waterproof and breathable membrane; 500, pressure ring; 600, flexible component. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0029] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0030] The waterproof and breathable valve 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0031] like Figures 1-9 As shown, the waterproof and breathable valve 1 according to an embodiment of the present invention includes a valve body 100, a membrane assembly 200, and a pressure ring 500.

[0032] An air passage 110 is formed inside the valve body 100. A membrane assembly 200 is disposed inside the air passage 110 and includes a support member 300 and a waterproof and breathable membrane 400. The waterproof and breathable membrane 400 is connected to one side of the support member 300. A pressure ring 500 is fixed inside the air passage 110, and one axial end of the pressure ring 500 is pressed against the side of the waterproof and breathable membrane 400 facing away from the support member 300.

[0033] The waterproof and breathable membrane 400 and the support 300 can be connected by welding or bonding.

[0034] The valve body 100 includes an air passage 110 that allows airflow. This allows air to be expelled from the battery pack when internal pressure is excessive, balancing the internal and external pressures and preventing an explosion. Furthermore, the outer peripheral wall of the pressure ring 500 is press-fitted with the inner peripheral wall of the air passage 110, ensuring stable fixation of the pressure ring 500 within the air passage 110. This, in turn, securely fixes the membrane assembly 200 within the air passage 110, guaranteeing the sealing effect of the waterproof vent valve 1. The waterproof vent valve 1 is also an explosion-proof valve.

[0035] According to the waterproof and breathable valve 1 of this utility model embodiment, the pressure ring 500 is pressed onto the side of the waterproof and breathable membrane 400 facing away from the support member 300, that is, the waterproof and breathable membrane 400 can be disposed between the support member 300 and the pressure ring 500. This arrangement allows the support member 300 to support and protect the waterproof and breathable membrane 400, preventing the waterproof and breathable membrane 400 from directly contacting the internal structure of the valve body 100, thereby preventing excessive pressure from the pressure ring 500 on the waterproof and breathable membrane 400, which could lead to damage to the membrane.

[0036] Moreover, since the support member 300 supports and protects the waterproof and breathable membrane 400, the pressing pressure of the pressure ring 500 on the waterproof and breathable membrane 400 can be set to be larger, thereby avoiding the pressure ring 500 not pressing the waterproof and breathable membrane 400 properly, and preventing the waterproof and breathable membrane 400 from detaching from the pressure ring 500 and the support member 300, which further improves the sealing effect of the waterproof and breathable valve 1.

[0037] In addition, by setting a pressure ring 500 to press and fix the waterproof and breathable membrane 400, the pressure ring 500 can press the waterproof and breathable membrane 400 tightly to the support member 300, and at the same time press and fix the membrane component 200 in the air channel 110. This can avoid the connection strength between the waterproof and breathable membrane 400 and the support member 300 from failing to meet the high-strength sealing requirements, such as the IPX7 level (international waterproof rating 7) sealing requirements. It can also more effectively prevent the waterproof and breathable membrane 400 from detaching and causing the waterproof and breathable valve 1 to fail to seal, and further improve the sealing effect of the waterproof and breathable valve 1.

[0038] Thus, the waterproof and breathable valve 1 according to this utility model embodiment connects the waterproof and breathable membrane 400 to the support member 300 and presses the waterproof and breathable membrane 400 with the pressure ring 500, which can improve the sealing effect of the waterproof and breathable valve 1 and prevent the waterproof and breathable membrane 400 from being crushed.

[0039] In some specific embodiments of this utility model, such as Figure 3 , Figure 4 and Figure 9 As shown, the air passage 110 is provided with a sealing step 113, which extends in a ring shape along the circumference of the air passage 110, and the side of the support member 300 facing away from the waterproof and breathable membrane 400 abuts against the sealing step 113.

[0040] The sealing step 113 protrudes radially inward from the inner wall of the air passage 110. By setting the sealing step 113 to stop the support member 300 along the axial direction of the valve body 100, the pressure ring 500 and the sealing step 113 can be set on opposite sides of the axial direction of the membrane assembly 200 so that the membrane assembly 200 is stably fixed in the air passage 110. This can prevent the membrane assembly 200 from shifting and causing a decrease in the sealing effect, thus ensuring good sealing performance of the waterproof and breathable valve 1.

[0041] Furthermore, such as Figure 3 , Figure 4 and Figure 9 As shown, the air passage 110 is also provided with an annular sealing groove 114. The annular sealing groove 114 and the sealing step 113 are arranged radially along the valve body 100, and a first sealing ring 115 is provided in the annular sealing groove 114. The first sealing ring 115 abuts against the membrane assembly 200 to seal the gap between the membrane assembly 200 and the sealing step 113.

[0042] The first sealing ring 115 abutting against the membrane component 200 means that the first sealing ring 115 can abut against the support member 300, or the first sealing ring 115 can abut against the waterproof and breathable membrane 400.

[0043] For example, the annular sealing groove 114 can be located radially adjacent to the inner wall of the air passage 110 of the valve body 100, and the sealing step 113 can be located radially inside the annular sealing groove 114 of the valve body 100. This arrangement allows the side walls of the sealing step 113 and the side walls of the air passage 110 to be used as the two side walls of the annular sealing groove 114, thereby simplifying the structure of the valve body 100.

[0044] Furthermore, by providing a first sealing ring 115 within the annular sealing groove 114, the first sealing ring 115 can seal the side of the support member 300 facing away from the pressure ring 500, further improving the sealing performance between the membrane assembly 200 and the inner wall of the air passage 110. This prevents impurities, dust, and water from entering the waterproof and breathable valve 1 through the gap between the membrane assembly 200 and the sealing step 113, thereby improving the sealing effect of the waterproof and breathable valve 1.

[0045] In some specific embodiments of this utility model, such as Figure 3 , Figure 5 and Figure 6 As shown, the support member 300 is constructed as a bracket 310, which extends in a ring along the circumference of the air passage 110 and is connected to the side of the waterproof and breathable membrane 400 facing the sealing step 113.

[0046] Specifically, the side of the bracket 310 axially away from the waterproof and breathable membrane 400 can abut against the sealing step 113. This allows the sealing step 113 to stop the bracket 310, thus limiting the position of the membrane assembly 200. The bracket 310 can also contact and seal with the first sealing ring 115, ensuring a tight seal between the bracket 310 and the sealing step 113. Furthermore, by supporting and protecting the waterproof and breathable membrane 400 with the bracket 310, direct contact between the sealing step 113 and the membrane 400 can be prevented, thus avoiding damage to the membrane 400 due to compression. This more rational structural design improves the sealing performance of the waterproof and breathable valve 1.

[0047] In some specific embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the waterproof and breathable membrane 400 is welded to the bracket 310. The welding area 311 of the waterproof and breathable membrane 400 and the bracket 310 is adjacent to the radial inner edge of the bracket 310, and the waterproof and breathable membrane 400 extends outward from the welding area 311 along the radial direction of the bracket 310.

[0048] The phrase "the waterproof and breathable membrane 400 extends beyond the welding area 311" means that the outer diameter of the waterproof and breathable membrane 400 is larger than the outer diameter of the welding area 311. Additionally, the radial outer edge of the waterproof and breathable membrane 400 can be flush with the radial outer edge of the support 310.

[0049] For example, the inner edge of the welding area 311 can be flush with the radial inner edge of the bracket 310. This simplifies the welding structure between the waterproof and breathable membrane 400 and the bracket 310, facilitating their connection and fixation. Furthermore, by extending the waterproof and breathable membrane 400 radially outward beyond the welding area 311, the contact area between the membrane and the bracket 310 can be larger. The pressure ring 500 can not only press the welding area 311 between the membrane and the bracket 310, but also press the portion of the membrane extending beyond the welding area 311. This results in a larger pressing area of ​​the pressure ring 500 on the membrane, further improving the reliability of the pressure ring's application to the membrane. Consequently, the connection stability between the membrane and the bracket 310 is higher, and the sealing effect is better.

[0050] Furthermore, such as Figure 6 As shown, along the radial direction of the bracket 310, the width of the welding area 311 is D, and D satisfies: 1mm≤D≤3mm.

[0051] For example, the width D of the welding area 311 can be 1mm, 1.5mm, 2mm, 2.5mm, or 3mm. This avoids the welding area 311 being too small, allowing for a larger welding area between the waterproof and breathable membrane 400 and the support member 300, thus ensuring a stronger connection and more stable and reliable connection. On the other hand, it avoids the welding area 311 being too large, simplifying the welding structure between the waterproof and breathable membrane 400 and the support member 300, facilitating their connection.

[0052] In some specific embodiments of this utility model, such as Figure 4 , Figure 7 and Figure 8 As shown, the support member 300 is constructed as a buffer layer 320, which extends in a ring shape along the circumference of the air passage 110. The buffer layer 320 is connected to the side of the waterproof and breathable membrane 400 facing the sealing step 113.

[0053] For example, the buffer layer 320 can be made of PET (Polyethylene Terephthalate), but is not limited to this. The buffer layer 320 can be bonded to the waterproof and breathable membrane 400.

[0054] By placing the buffer layer 320 on the side of the waterproof and breathable membrane 400 facing the sealing step 113, the buffer layer 320 can contact the sealing step 113 when the waterproof and breathable membrane 400 is pressed and sealed with the sealing step 113 under the pressure of the pressure ring 500. This avoids hard contact between the waterproof and breathable membrane 400 and the sealing step 113, thus preventing excessive pressure from the pressure ring 500 during the pressing process, which could damage the waterproof and breathable membrane 400. This helps protect the waterproof and breathable membrane 400 and improves the sealing effect of the waterproof and breathable valve 1.

[0055] Furthermore, during the pressing and sealing process of the waterproof and breathable membrane 400 and the sealing step 113, the buffer layer 320 can be used to absorb the tolerance of the pressing process, ensuring the stability of the pressing and ensuring the pressing accuracy of the waterproof and breathable membrane 400 and the sealing step 113. This can improve the sealing performance between the waterproof and breathable membrane 400 and the sealing step 113, which is beneficial to improving the overall sealing performance of the waterproof and breathable valve 1.

[0056] In some specific embodiments of this utility model, such as Figure 4 As shown, along the radial direction of the buffer layer 320, the width of the buffer layer 320 is not less than the width of the sealing step 113.

[0057] Along the radial direction of the air passage 110, the buffer layer 320 corresponds to the sealing step 113.

[0058] For example, the width of the buffer layer 320 can be the same as the width of the sealing step 113, or the width of the buffer layer 320 can be greater than the width of the sealing step 113. With this configuration, the buffer layer 320 can completely cover the sealing step 113, meaning the buffer layer 320 can completely separate the waterproof and breathable membrane 400 from the sealing step 113, more effectively preventing contact between the waterproof and breathable membrane 400 and the sealing step 113. The buffer layer 320 can better cushion and protect the waterproof and breathable membrane 400, preventing damage to the waterproof and breathable membrane 400 from the sealing step 113, resulting in a more rational structural design.

[0059] It should be noted that when the radial outer edge of the waterproof and breathable membrane 400 is flush with the radial outer edge of the buffer layer 320, the first sealing ring 115 can abut against the buffer layer 320 to seal the gap between the membrane assembly 200 and the sealing step 113; and when the radial outer edge of the waterproof and breathable membrane 400 extends outward beyond the radial outer edge of the buffer layer 320, the first sealing ring 115 can abut against the portion of the waterproof and breathable membrane 400 that extends beyond the buffer layer 320 to seal the gap between the membrane assembly 200 and the sealing step 113.

[0060] In specific embodiments of this utility model, such as Figures 2-4As shown, the waterproof and breathable valve 1 also includes a flexible member 600, which extends in a ring shape along the circumference of the air passage 110, and the flexible member 600 is connected to the side of the pressure ring 500 facing the waterproof and breathable membrane 400.

[0061] For example, the flexible component 600 can be foam, but is not limited to this.

[0062] The flexible component 600 can be bonded to the pressure ring 500 on one side and to the waterproof and breathable membrane 400 on the other side. In other words, the flexible component 600 can be positioned axially between the pressure ring 500 and the waterproof and breathable membrane 400. This arrangement not only allows the flexible component 600 to absorb tolerances during the pressing process between the pressure ring 500 and the waterproof and breathable membrane 400, thus improving the pressing accuracy and ensuring a tight seal, but also provides a buffering effect during the pressing process to prevent damage to the waterproof and breathable membrane 400 caused by excessive pressure from the pressure ring 500.

[0063] In some specific embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the waterproof and breathable valve 1 also includes a pin 120.

[0064] The air passage 110 has an air inlet 111 and an air outlet 112. The ejector pin 120 is fixed inside the air passage 110 and is located on the side of the waterproof and breathable membrane 400 facing the air outlet 112. The pressure ring 500 is located on the side of the waterproof and breathable membrane 400 away from the ejector pin 120.

[0065] In other words, the pressure ring 500 is located on the upstream side of the waterproof and breathable membrane 400. This allows the pressure ring 500 to press the waterproof and breathable membrane 400 tightly, thereby reducing the gap between the ejector pin 120 and the waterproof and breathable membrane 400. This enables the ejector pin 120 to easily puncture the waterproof and breathable membrane 400 in the event of thermal runaway of the battery pack. At the same time, this arrangement also helps to reduce the requirements for the ejector pin 120 to some extent.

[0066] In addition, the ejector pin 120 can be fixed directly or indirectly to the valve body 100 so that the ejector pin 120 can remain relatively stationary with respect to the valve body 100, and at least a portion of the ejector pin 120 is located within the air passage 110.

[0067] Specifically, the air inlet 111 and the air outlet 112 can be located at opposite ends of the air passage 110 to ensure smooth airflow. The ejector pin 120 can be located inside the air passage 110 facing the air outlet 112. It can be understood that the airflow in the air passage 110 can first flow through the waterproof and breathable membrane 400 through the air inlet 111, then through the ejector pin 120 and towards the air outlet 112. When the air pressure inside the air passage 110 increases, the waterproof and breathable membrane 400 can deform towards the air outlet 112 under the action of high-pressure gas. By placing the ejector pin 120 on the side of the air outlet 112, the waterproof and breathable membrane 400 can be punctured by the ejector pin 120, and then the air can be released and the pressure relieved through the air outlet 112.

[0068] It should be noted that when the waterproof and breathable membrane 400 material can be depressurized by rupturing the membrane under high pressure, the pin 120 structure can be omitted.

[0069] The following description, with reference to the accompanying drawings, describes a battery pack according to an embodiment of the present invention.

[0070] The battery pack according to an embodiment of the present invention includes a waterproof and breathable valve 1 according to the above embodiment of the present invention.

[0071] A connecting portion 130 can be provided on the valve body 100. The connecting portion 130 can protrude radially from the outer peripheral wall of the valve body 100 and extend circumferentially from the valve body 100. An outer sealing groove 131 can be provided on the connecting portion 130 to fix a second sealing ring 132 in the outer sealing groove 131. In this way, the second sealing ring 132 can be used to seal between the waterproof vent valve 1 and the battery pack housing to ensure the sealing performance between the waterproof vent valve 1 and the battery pack.

[0072] According to the battery pack of the present invention, by utilizing the waterproof and breathable valve 1 of the above embodiment of the present invention, the waterproof and breathable valve 1 connects the waterproof and breathable membrane 400 to the support member 300 and presses the waterproof and breathable membrane 400 with the pressure ring 500, which can improve the sealing effect of the waterproof and breathable valve 1 and prevent the waterproof and breathable membrane 400 from being crushed.

[0073] The vehicle according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0074] The vehicle according to an embodiment of the present invention includes a battery pack according to the above embodiment of the present invention.

[0075] In the vehicle according to the present invention, by utilizing the battery pack according to the above embodiment of the present invention, the waterproof and breathable valve 1 connects the waterproof and breathable membrane 400 to the support member 300 and presses the waterproof and breathable membrane 400 with the pressure ring 500, which can improve the sealing effect of the waterproof and breathable valve 1 and prevent the waterproof and breathable membrane 400 from being crushed.

[0076] The waterproof and breathable valve 1, battery pack, and other components and operations of the vehicle according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0077] In the description of this specification, references to terms such as "specific embodiment" and "specific example" refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0078] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A waterproof and breathable valve (1), characterized in that, include: Valve body (100), wherein an air passage (110) is formed inside the valve body (100); A membrane assembly (200) is disposed within the air passage (110) and includes a support member (300) and a waterproof and breathable membrane (400), wherein the waterproof and breathable membrane (400) is connected to one side of the support member (300); A pressure ring (500) is fixed inside the air passage (110), and one axial end of the pressure ring (500) is pressed against the side of the waterproof and breathable membrane (400) facing away from the support member (300).

2. The waterproof and breathable valve (1) according to claim 1, characterized in that, The air passage (110) is provided with a sealing step (113), which extends in a ring shape along the circumference of the air passage (110), and the side of the support member (300) facing away from the waterproof and breathable membrane (400) abuts against the sealing step (113).

3. The waterproof and breathable valve (1) according to claim 2, characterized in that, The air passage (110) is also provided with an annular sealing groove (114), the annular sealing groove (114) and the sealing step (113) are arranged radially along the valve body (100), and a first sealing ring (115) is provided in the annular sealing groove (114). The first sealing ring (115) abuts against the membrane assembly (200) to seal the gap between the membrane assembly (200) and the sealing step (113).

4. The waterproof and breathable valve (1) according to claim 2, characterized in that, The support (300) is constructed as a bracket (310), which extends in a ring along the circumference of the air passage (110) and is connected to the side of the waterproof and breathable membrane (400) facing the sealing step (113).

5. The waterproof and breathable valve (1) according to claim 4, characterized in that, The waterproof and breathable membrane (400) is welded to the bracket (310).

6. The waterproof and breathable valve (1) according to claim 5, characterized in that, The welding area (311) of the waterproof and breathable membrane (400) and the bracket (310) is adjacent to the radial inner edge of the bracket (310), and the waterproof and breathable membrane (400) extends radially outward beyond the welding area (311) along the bracket (310).

7. The waterproof and breathable valve (1) according to claim 6, characterized in that, Along the radial direction of the bracket (310), the width of the welding area (311) is D, and D satisfies: 1mm≤D≤3mm.

8. The waterproof and breathable valve (1) according to claim 2, characterized in that, The support member (300) is constructed as a buffer layer (320), which extends in a ring shape along the circumference of the air passage (110) and is connected to the side of the waterproof and breathable membrane (400) facing the sealing step (113).

9. The waterproof and breathable valve (1) according to claim 8, characterized in that, Along the radial direction of the buffer layer (320), the width of the buffer layer (320) is not less than the width of the sealing step (113).

10. The waterproof and breathable valve (1) according to claim 1, characterized in that, Also includes: A flexible element (600) extends in a ring shape along the circumference of the air passage (110), and the flexible element (600) is connected to the side of the pressure ring (500) facing the waterproof and breathable membrane (400).

11. The waterproof and breathable valve (1) according to claim 1, characterized in that, Also includes: The ejector pin (120) has an air inlet (111) and an air outlet (112) in the air passage (110). The ejector pin (120) is fixed inside the air passage (110) and is located on the side of the waterproof and breathable membrane (400) facing the air outlet (112). The pressure ring (500) is located on the side of the waterproof and breathable membrane (400) facing away from the ejector pin (120).

12. A battery pack, characterized in that, Includes the waterproof and breathable valve (1) according to any one of claims 1-11.

13. A vehicle, characterized in that, Includes the battery pack according to claim 12.

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