Seal, sealed connection structure, and battery device

Abstract

The utility model belongs to sealing device technical field discloses a kind of sealing element, sealing connection structure and battery device, the sealing element includes sealing ring, sealing ring has opposite first end face and second end face in thickness direction, sealing ring is set in the opening of first component, first component includes multiple layer plate parts of laminated arrangement, opening is through first component and forms through-hole on each layer plate part, the layer plate of both ends is first layer plate and second layer plate respectively, the aperture of through-hole on first layer plate is less than the aperture of through-hole on other any layer plate part;First end face is abutted to the side surface of first layer plate towards second layer plate, second end face is protruding to the outer surface of second layer plate, and the part of sealing ring protruding to second layer plate is configured to be able to be pressed deformation to fit the periphery of outside orifice of through-hole on second layer plate.The sealing element can seal the gap between multiple layer plates, help to prevent water and moisture, ensure that system whole is in higher protection level.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and in particular to a sealing element, a sealing connection structure, and a battery device. Background Technology

[0002] In electrical and mechanical systems, to achieve the integration of multiple functions or modular combinations, the enclosures of each module are usually connected in parallel.

[0003] In existing technologies, several fastening bolts are commonly used to connect two assembled enclosures to ensure the strength and reliability of the connection between the enclosures. When connecting two enclosures using fastening bolts, the bolts pass through the inside of one enclosure and are screwed into bolt holes on the other enclosure. However, drilling bolt holes in the enclosure enclosures causes the IP (Ingress Protection) rating of the enclosures to fail, making it easy for moisture and dust to seep into the bolt holes from the gaps between the enclosure surfaces and then into the enclosure. Simultaneously, it can also cause the protective gas and lubricating oil filling the enclosure to leak out through the bolt holes. Furthermore, in multi-layered enclosure structures, the gaps between multiple layers can become poorly sealed, leading to moisture infiltration or leakage of filler materials.

[0004] Therefore, there is an urgent need for a sealing element, a sealed connection structure, and a battery device to solve the above problems. Utility Model Content

[0005] According to one aspect of the present invention, a sealing element is provided that can seal the gaps between multiple layers of the outer shell of the housing, which helps to waterproof and prevent moisture and block dust, ensuring that the system as a whole is at a high level of protection.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Seals, including:

[0008] A sealing ring having a first end face and a second end face opposite each other in the thickness direction, the sealing ring being disposed in an opening of a first component, the first component comprising a plurality of stacked layer plates, the opening penetrating the first component and forming a through hole on each of the layer plates, the layer plates located at both ends being a first layer plate and a second layer plate respectively, the diameter of the through hole on the first layer plate being smaller than the diameter of the through hole on any other layer plate;

[0009] The first end face abuts against the side surface of the first layer plate facing the second layer plate, the second end face protrudes from the outer surface of the second layer plate, and the sealing ring protrudes from a portion of the second layer plate and is configured to be deformed under pressure to fit the periphery of the outer opening of the through hole on the second layer plate.

[0010] Optionally, the sealing ring has a chamfered portion on the periphery of the first end face, and the chamfered portion forms a deformation space between the surface of the first layer plate and the inner wall of the opening.

[0011] Optionally, the seal further includes a sealing ring disposed on the stepped surface formed by the surface of the first layer and the inner wall of the through hole of the layer portion adjacent to the first layer.

[0012] Optionally, the outer circumferential shape of the sealing ring is adapted to the inner wall of the opening.

[0013] According to another aspect of the present invention, a sealing connection structure is provided, which includes a first component, a second component, a threaded connector, a nut, a combined washer, and a sealing element as described in any one of the above. The first component has a through hole, and the sealing element is disposed in the through hole. The second component has a through hole directly opposite the through hole. The nut is disposed on the side of the first layer plate away from the second layer plate. The threaded connector passes through the combined washer, the through hole, and the sealing element in sequence and is connected to the nut.

[0014] Optionally, the nut includes a threaded body and a connecting fixing part. One end of the threaded body has a threaded hole and the other end is closed. The connecting fixing part is coaxially connected to the outer edge of the opening of the threaded hole. Along the direction away from the threaded body, the diameter of the cross-section of the connecting fixing part gradually increases. The connecting fixing part can be embedded in the through hole of the first layer plate.

[0015] Optionally, the nut further includes an anti-rotation part, which is disposed on the threaded body and spaced apart from the connection fixing part, and the anti-rotation part is used to limit the relative rotation between the threaded body and the first layer plate.

[0016] Optionally, the combined washer includes an outer washer and an inner washer, the outer washer being sleeved on the outer washer, and the inner washer having protrusions at both ends in the thickness direction that protrude from the outer washer.

[0017] Optionally, the inner wall of the outer washer is connected to the outer wall of the inner washer via a snap-fit ​​structure.

[0018] Optionally, the protrusion is annular and integral with the inner washer. The inner diameter of the protrusion is not less than the inner diameter of the inner washer, and the outer diameter of the protrusion gradually decreases in the direction away from the inner washer.

[0019] According to another aspect of the present invention, a battery device is provided, the battery device including a battery case and a sealing member as described in any of the above claims, the housing of the battery case having at least two stacked layered plates, an opening being provided through the housing, and the sealing member being disposed within the opening.

[0020] The beneficial effects of this utility model are:

[0021] The sealing element provided by this utility model includes a sealing ring disposed within an opening of a first component to seal gaps between multiple layered portions of the first component. The first component includes multiple stacked layered portions, with the opening penetrating the first component and forming a through hole in each layered portion. The layered portions at both ends are respectively a first layer and a second layer. The diameter of the through hole on the first layer is smaller than the diameter of the through hole on any other layered portion. The sealing ring has opposing first and second end faces in the thickness direction. The first end face abuts against the surface of the first layer facing the second layer, and the second end face protrudes from the outer surface of the second layer. The outer periphery of the sealing ring is used to seal the gaps formed on the inner walls of the openings of multiple layer plates. The first end face abuts against the surface of the first layer plate. When the part of the sealing ring protruding from the second layer plate is compressed (i.e., when the first component is connected to another component), the sealing ring is compressed, causing its outer contour to increase. This allows the first end face of the sealing ring to fit tightly against the surface of the first layer plate and the gaps between the adjacent layer plates. At the same time, the part of the sealing ring protruding from the second layer plate is also compressed and increases in size, fitting against the periphery of the outer opening of the through hole on the second layer plate. This design seals both the inner and outer openings of the opening in the first component and seals the gaps between multiple layer plates on the inner walls of the openings, effectively waterproofing, moisture-proofing, and dust-blocking, thereby ensuring a high level of protection for the first component and the entire system connected to other components. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a sealing connection structure provided in Embodiment 1 of this utility model;

[0024] Figure 2 yes Figure 1 Exploded view of the sealing connection structure in the diagram;

[0025] Figure 3 yes Figure 1 A cross-sectional view of the sealing connection structure in the middle;

[0026] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0027] Figure 5 This is an exploded view of the combined washer provided in Embodiment 1 of this utility model;

[0028] Figure 6 This is a partially enlarged cross-sectional view of the combined washer provided in Embodiment 1 of this utility model;

[0029] Figure 7 This is a schematic diagram of another sealing connection structure provided in Embodiment 1 of this utility model;

[0030] Figure 8 yes Figure 7 Exploded view of the sealing connection structure in the diagram;

[0031] Figure 9 yes Figure 7 A cross-sectional view of the sealing connection structure in the middle;

[0032] Figure 10 This is a schematic diagram of a sealing connection structure provided in Embodiment 2 of this utility model;

[0033] Figure 11 yes Figure 10 Exploded view of the sealing connection structure in the diagram;

[0034] Figure 12 yes Figure 10 A cross-sectional view of the sealing connection structure in the middle;

[0035] Figure 13 This is a schematic diagram of another sealing connection structure provided in Embodiment 2 of this utility model;

[0036] Figure 14 yes Figure 13 Exploded view of the sealing connection structure in the diagram;

[0037] Figure 15 yes Figure 13 A cross-sectional view of the sealed connection structure in the image.

[0038] In the picture:

[0039] 1. Sealing ring; 11. First end face; 12. Second end face; 13. Chamfered portion; 14. Deformation space;

[0040] 2. Sealing ring;

[0041] 100. First component; 101. Sheet section; 1011. First shelf; 1012. Second shelf; 102. Opening;

[0042] 200. Second component; 201. Through hole;

[0043] 300. Threaded fasteners;

[0044] 400. Nut; 401. Threaded body; 4011. Threaded hole; 402. Connecting and fixing part; 403. Anti-rotation part;

[0045] 500, Combination washer; 501, Outer washer; 5011, Slot; 502, Inner washer; 5021, Protrusion; 5022, Locking block. Detailed Implementation

[0046] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0054] 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.

[0055] Example 1

[0056] This embodiment provides a sealing element that can seal the gaps between multiple layers of the enclosure, ensuring the sealing performance of the enclosure. For example... Figures 1-4 As shown, the seal includes a sealing ring 1 and a sealing rubber ring 2.

[0057] Specifically, the sealing ring 1 is disposed within the opening 102 of the first component 100 to seal the gaps between the plurality of layer portions 101 of the first component 100. The first component 100 includes a plurality of layer portions 101 stacked together. The opening 102 penetrates the first component 100 and forms a through hole in each layer portion 101. The layer portions 101 located at both ends are respectively a first layer 1011 and a second layer 1012. The diameter of the through hole on the first layer 1011 is smaller than the diameter of the through hole on any other layer portion 101. The sealing ring 1 has opposing first end faces 11 and second end faces 12 in the thickness direction. The first end face 11 abuts against the surface of the first layer 1011 facing the second layer 1012, and the second end face 12 protrudes from the outer surface of the second layer 1012. The sealing ring 1 is preferably made of an elastic material.

[0058] Understandably, the outer circumferential shape of the sealing ring 1 is adapted to the inner wall of the opening 102, and the outer circumference of the sealing ring 1 can be used to seal the gaps formed by multiple layer portions 101 at the inner wall of the opening 102. The first end face 11 abuts against the surface of the first layer 1011. When the portion of the sealing ring 1 protruding from the second layer 1012 is compressed (i.e., when the first component 100 is connected to another component), the sealing ring 1 is compressed, causing its outer contour to increase, so that the first end face 11 of the sealing ring 1 can fit tightly against the surface of the first layer 1011 and the gap between the layer portions 101 adjacent to the first layer 1011. At the same time, the portion of the sealing ring 1 protruding from the second layer 1012 is also compressed and increases in size, fitting against the periphery of the outer opening of the through hole on the second layer 1012. With this configuration, the inner and outer openings of the opening 102 of the first component 100 can be sealed respectively, and the gaps between multiple layer plates 101 on the inner wall of the opening 102 can be sealed, effectively waterproofing, moisture-proofing and dust-proofing, thereby ensuring that the first component 100 and the system as a whole after the first component 100 is connected with other components are in a high level of protection.

[0059] To be more specific, refer to Figure 3 and Figure 4The sealing ring 2 is disposed at the stepped surface formed by the surface of the first layer plate 1011 and the inner wall of the through hole of the adjacent layer plate portion 101. In this embodiment, sealant is applied circumferentially at the stepped surface formed by the surface of the first layer plate 1011 and the inner wall of the through hole of the adjacent layer plate portion 101. After the sealant cures, the sealing ring 2 is formed. The sealing ring 2 can further seal the gap between the first layer plate 1011 and the adjacent layer plate portion 101, which helps to improve the sealing effect.

[0060] More specifically, the sealing ring 1 has a chamfered portion 13 on the periphery of its first end face 11. The chamfered portion 13, the surface of the first layer plate 1011, and the inner wall of the opening 102 form a deformation space 14. When the sealing ring 1 is compressed and deformed, the deformation space 14 can provide deformation allowance for the outer contour of the sealing ring 1. At the same time, the deformed chamfered portion 13 can also cover the sealing ring 2, achieving a double-layer sealing effect.

[0061] like Figures 1-3 and Figures 7-9 As shown, this embodiment also provides a sealing connection structure. This sealing connection structure includes a first component 100, a second component 200, a threaded connector 300, a nut 400, a combination washer 500, and the sealing element provided in this embodiment. The first component 100 has a through hole 102, and the sealing element is disposed within the through hole 102. The second component 200 has a through hole 201 directly opposite the through hole 102. The nut 400 is disposed on the side of the first layer plate 1011 facing away from the second layer plate 1012. The threaded connector 300 sequentially passes through the combination washer 500, the through hole 201, and the sealing element, and is connected to the nut 400. The threaded connector 300 enables a reliable connection between the first component 100 and the second component 200. The sealing element seals the gaps between the multiple layer plates 101 in the first component 100 and the gaps at the connection between the first component 100 and the second component 200. By using the combination washer 500, a seal can be achieved between the threaded connector 300 and the second component 200. This configuration seals the entire structure formed by the connection of the first component 100 and the second component 200, effectively improving the sealing performance and preventing external moisture and dust from seeping in or internal filling fluid / gas leakage.

[0062] It should be noted that the first component 100 can be a box shell or a multi-layer board structure. The number of layers 101 in the first component 100 includes, but is not limited to, two, three or more layers, which can be selected according to the actual situation. Similarly, the second component 200 can also be a box or board structure. Unlike the first component 100, the second component 200 can be a single layer, double layer, three layers or more.

[0063] In this embodiment, the first component 100 is described as a double-layered housing shell with two layered plates 101. The first component 100 has a first layer 1011 and a second layer 1012 stacked together. An opening 102 penetrates the first component 100, forming a first through hole on the first layer 1011 and a second through hole on the second layer 1012. The diameter of the first through hole is smaller than the diameter of the second through hole. A sealing ring 2 is disposed at the junction of the surface of the first layer 1011 facing the second layer 1012 and the inner wall of the second through hole. A portion of the sealing ring 1 is disposed in the second through hole, with the first end face 11 of the sealing ring 1 abutting against the surface of the first layer 1011 and the second end face 12 protruding from the outer surface of the second layer 1012.

[0064] Specifically, the combined washer 500 includes an outer washer 501 and an inner washer 502. The outer washer 501 is fitted over the inner washer 502, and the inner washer 502 has protrusions 5021 at both ends in the thickness direction that protrude from the outer washer 501. When the threaded connector 300 is screwed onto the nut 400, the threaded connector 300 is tightened, causing the gap between the end of the threaded connector 300 and the connecting surface of the second component 200 to gradually decrease. At this time, the protrusions 5021 of the inner washer 502 deform under pressure in the thickness direction, reducing their thickness and extending to both sides along the pressure surface, thereby achieving a tight seal with the pressure surface.

[0065] Furthermore, the elastic modulus of the inner washer 502 is smaller than that of the outer washer 501. When the threaded connector 300 is screwed onto the nut 400, the outer washer 501 is less prone to deformation in the thickness direction than the inner washer 502 after being compressed. The outer washer 501 can withstand the clamping force in the thickness direction, thereby maintaining the gap size of the sealing interface between the threaded connector 300 and the second component 200. In this way, the compression rate can be controlled by controlling the compression stroke of the threaded connector 300 during the sealing connection.

[0066] In other words, the seal is achieved by the elastic deformation of the protrusion 5021 of the inner gasket 502, which has lower stiffness, and the sealing compression ratio is controlled by the thickness of the outer gasket 501, which has higher stiffness. This can prevent the seal from failing due to insufficient compression ratio, and can also prevent the inner gasket 502 from being crushed and damaged due to excessive compression ratio to a certain extent, thereby improving the reliability of the seal and the service life of the combined gasket 500.

[0067] More specifically, the protrusion 5021 is annular and integrally formed with the inner washer 502. The inner diameter of the protrusion 5021 is not less than the inner diameter of the inner washer 502, and the outer diameter of the protrusion 5021 gradually decreases along the direction away from the inner washer 502. In this embodiment, the inner diameter of the protrusion 5021 is equal to the inner diameter of the inner washer 502, that is, the thickness of the inner washer 502 gradually decreases along the radial direction away from the center of the inner washer 502. This arrangement provides sufficient space for the deformation of the protrusion 5021 and facilitates the sealing of the gap between the threaded connector 300 and the connecting surface by the protrusion 5021.

[0068] More specifically, the inner wall of the outer washer 501 and the outer wall of the inner washer 502 are connected by a snap-fit ​​structure. In this embodiment, the inner wall of the outer washer 501 has a slot 5011, and the outer wall of the inner washer 502 has a corresponding snap-fit ​​block 5022. The snap-fit ​​block 5022 engages with the slot 5011 to achieve a detachable connection between the outer washer 501 and the inner washer 502. Of course, the outer washer 501 and the inner washer 502 can also be connected by interference fit or adhesive bonding, which will not be elaborated here.

[0069] Optionally, the outer gasket 501 may be made of metal, such as aluminum alloy, steel, or other alloy steel. The inner gasket 502 may be made of rubber, such as any one of natural rubber, silicone rubber, EPDM, or polytetrafluoroethylene.

[0070] Alternatively, the cross-sectional shape of the inner washer 502 can be any one of a circle, teardrop shape, ellipse, or polygon, and the shape of the inner wall connecting the outer washer 501 and the inner washer 502 can be adapted to the cross-sectional shape of the inner washer 502. Thus, when the threaded connector 300 rotates to gradually increase the tightening force, the interaction force between the two connection points increases, which helps to suppress mutual rotation between them and prevents relative rotational displacement between the inner washer 502 and the outer washer 501.

[0071] like Figures 1-3 As shown, in one embodiment of this invention, the threaded connector 300 is a through-hole connector. The connection between the second component 200 and the first component 100 is a single-layer plate structure, with the second component 200 positioned on the side of the second plate 1012 facing away from the first plate 1011. The through-hole connector passes through the through hole 201 of the second component 200 and the opening 102 of the first component 100, and is then threadedly connected to the nut 400. Combined washers 500 are sandwiched between the through-hole connector and the second component 200, and between the first component 100 and the nut 400, to ensure reliable connection and sealing.

[0072] like Figures 7-9As shown, in another embodiment provided in this example, the threaded connector 300 is a fastener such as a bolt. The second component 200 is a double-layered housing with two layers, and the through hole 201 penetrates the housing of the second component 200. The bolt passes sequentially through the through hole 201 and the opening 102 of the first component 100 from the inside of the second component 200, and then screws into the nut 400 on the inside of the first component 100, thereby realizing the parallel connection of the two housings, the first component 100 and the second component 200.

[0073] In this embodiment, the nut 400 is a waterproof nut.

[0074] Specifically, the nut 400 includes a threaded body 401 and a connecting and fixing part 402. One end of the threaded body 401 has a threaded hole 4011, and the other end is closed. By closing the other end of the nut 400 body, it helps to prevent gas or liquid in the second component 200 from leaking through the gap in the threaded hole 4011, thereby improving the sealing performance.

[0075] Meanwhile, the connecting fixing part 402 is coaxially connected to the outer edge of the threaded hole 4011. Along the direction away from the bolted body 401, the diameter of the cross-section of the connecting fixing part 402 gradually increases, allowing it to be embedded in the through hole of the first layer plate 1011. By defining the shape of the connecting fixing part 402, when the tightening force between the bolt and the nut 400 gradually increases due to rotation, the connecting fixing part 402 is subjected to tension and embedded in the first through hole of the first layer plate 1011, thereby effectively improving the connection reliability and sealing performance between the nut 400 and the first layer plate 1011.

[0076] More specifically, the nut 400 also includes an anti-rotation portion 403, which is disposed on the screw-in body 401 and spaced apart from the connecting fixing portion 402. The anti-rotation portion 403 is used to limit the relative rotation between the screw-in body 401 and the first layer plate 1011. After the connecting fixing portion 402 is inserted into the first through hole, the anti-rotation portion 403 can engage with the surface of the first layer plate 1011 to prevent the nut 400 from loosening. The cross-sectional shape of the anti-rotation portion 403 includes, but is not limited to, polygonal, square, elliptical, or gear-shaped shapes. In this embodiment, the anti-rotation portion 403 is serrated.

[0077] Optionally, this embodiment also provides a battery device. The battery device includes a battery case (not shown) and a sealing element provided in this embodiment. The housing of the battery case is the first component 100 in this embodiment. The housing has at least two stacked layer plates 101, and an opening 102 is provided through the housing. The sealing element is disposed within the opening 102. Exemplarily, the number of layer plates 101 in the housing includes, but is not limited to, two, three, or more layers, which can be selected according to actual conditions.

[0078] In other words, the seal can seal the gaps in the inner wall of the opening 102 of the battery box with multiple layer plates 101, ensuring the sealing performance of the battery box shell, and further ensuring that the battery device composed of the battery box or the battery device composed of the battery box and other components is in a high protection level.

[0079] Example 2

[0080] like Figures 10-15 As shown, this embodiment provides a sealing connection structure, which is basically the same as the sealing connection structure provided in Embodiment 1. The difference between this embodiment and Embodiment 1 is that in this embodiment, the first component 100 is a single-layer box shell or other plate-like structure. Since the first component 100 only has one layer plate portion 101 and has no inner and outer layer gaps, there is no need to set a sealing element. The sealing at the connection between the first component 100 and the second component 200 can be achieved by the cooperation between the threaded connector 300, the combination washer 500 and the nut 400.

[0081] Specifically, such as Figures 10-12 As shown, in one embodiment provided in this example, the threaded connector 300 is a fastener such as a bolt. The second component 200 is a single-layer box shell with a single-layer plate, and the through hole 201 penetrates the shell of the second component 200. The bolt passes sequentially through the through hole 201 and the opening 102 of the first component 100 from the inside of the second component 200, and then screws into the nut 400 on the inside of the first component 100, thereby realizing the parallel connection of the two boxes, the first component 100 and the second component 200.

[0082] In this embodiment, the nut 400 is a waterproof nut, and the structure of the nut 400 is exactly the same as that of the nut 400 provided in Embodiment 1 above.

[0083] More specifically, such as Figures 13-15 As shown, in another embodiment provided in this example, the threaded connector 300 is a through-hole connector. The connection between the second component 200 and the first component 100 is a single-layer plate structure, with the second component 200 disposed on the side of the second layer plate 1012 facing away from the first layer plate 1011. The through-hole connector passes through the through hole 201 of the second component 200 and the opening 102 of the first component 100 in sequence, and is then threadedly connected to the nut 400. Combined washers 500 are sandwiched between the through-hole connector and the second component 200, and between the first component 100 and the nut 400, to ensure the reliability and sealing of the connection.

[0084] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sealing element, characterized in that, include: A sealing ring (1) has a first end face (11) and a second end face (12) opposite each other in the thickness direction. The sealing ring (1) is disposed in the opening (102) of the first component (100). The first component (100) includes a plurality of stacked layer plates (101). The opening (102) penetrates the first component (100) and forms a through hole on each of the layer plates (101). The layer plates (101) located at both ends are respectively the first layer plate (1011) and the second layer plate (1012). The diameter of the through hole on the first layer plate (1011) is smaller than the diameter of the through hole on any other layer plate (101). The first end face (11) abuts against the side surface of the first layer plate (1011) facing the second layer plate (1012), the second end face (12) protrudes from the outer surface of the second layer plate (1012), and the sealing ring (1) protrudes from a portion of the second layer plate (1012) and is configured to be deformable under pressure to fit the periphery of the outer opening of the through hole on the second layer plate (1012).

2. The seal according to claim 1, characterized in that, The sealing ring (1) has a chamfered portion (13) on the periphery of the first end face (11), and the chamfered portion (13) forms a deformation space (14) between the surface of the first layer plate (1011) and the inner wall of the opening (102).

3. The seal according to claim 1, characterized in that, The sealing element further includes a sealing ring (2), which is disposed on the stepped surface formed by the surface of the first layer plate (1011) and the inner wall of the through hole of the layer plate portion (101) adjacent to the first layer plate (1011).

4. The seal according to claim 1, characterized in that, The outer circumferential shape of the sealing ring (1) is adapted to the inner wall of the opening (102).

5. A sealed connection structure, characterized in that, The device includes a first component (100), a second component (200), a threaded connector (300), a nut (400), a combination washer (500), and a seal as described in any one of claims 1-4. The first component (100) has a through hole (102) that extends through it. The seal is disposed in the through hole (102). The second component (200) has a through hole (201) that is directly opposite to the through hole (102). The nut (400) is disposed on the side of the first layer plate (1011) away from the second layer plate (1012). The threaded connector (300) passes through the combination washer (500), the through hole (201), and the seal in sequence, and is connected to the nut (400).

6. The sealing connection structure according to claim 5, characterized in that, The nut (400) includes a threaded body (401) and a connecting fixing part (402). One end of the threaded body (401) has a threaded hole (4011) and the other end is closed. The connecting fixing part (402) is coaxially connected to the outer edge of the opening of the threaded hole (4011). Along the direction away from the threaded body (401), the diameter of the cross-section of the connecting fixing part (402) gradually increases. The connecting fixing part (402) can be embedded in the through hole of the first layer plate (1011).

7. The sealing connection structure according to claim 6, characterized in that, The nut (400) also includes an anti-rotation part (403), which is disposed on the threaded body (401) and spaced apart from the connection fixing part (402). The anti-rotation part (403) is used to restrict the relative rotation between the threaded body (401) and the first layer plate (1011).

8. The sealing connection structure according to claim 5, characterized in that, The combined washer (500) includes an outer washer (501) and an inner washer (502). The outer washer (501) is sleeved on the outer of the inner washer (502). The inner washer (502) has protrusions (5021) at both ends in the thickness direction that protrude from the outer washer (501).

9. The sealing connection structure according to claim 8, characterized in that, The inner wall of the outer washer (501) is connected to the outer wall of the inner washer (502) by a snap-fit ​​structure.

10. The sealing connection structure according to claim 8, characterized in that, The protrusion (5021) is annular and integral with the inner washer (502). The inner diameter of the protrusion (5021) is not less than the inner diameter of the inner washer (502). The outer diameter of the protrusion (5021) gradually decreases along the direction away from the inner washer (502).

11. A battery device, characterized in that, The battery device includes a battery case and a seal as described in any one of claims 1-4. The housing of the battery case has at least two stacked layered plate portions (101), and an opening (102) is provided through the housing. The seal is disposed in the opening (102).

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