Sealing device, sealing assembly and battery

Abstract

The utility model relates to the technical field of batteries, and discloses a sealing device, a sealing assembly and a battery. The sealing device is used for being installed at a sealing installation hole of a sealing object and comprises a sealing body, the head of the sealing body is provided with a buckle structure, the tail of the sealing body is provided with an abutting structure, when the sealing body is inserted into the sealing installation hole, the abutting structure abuts against the outer end of the sealing installation hole, and the buckle structure is buckled to the inner end of the sealing installation hole. The abutting structure and the buckle structure jointly fix the sealing body in a sealing installation hole. And the sealing element is arranged on the sealing main body and is used for forming sealing connection between the sealing main body and the sealing mounting hole. According to the sealing device, the overall sealing operation of the sealing installation hole can be achieved, the outer end and the inner end of the sealing installation hole are correspondingly connected, and therefore the requirement for the overall installation space can be reduced, operation is convenient, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a sealing device, a sealing component and a battery. Background Art

[0002] Sometimes, due to the assembly sequence or for the convenience of subsequent maintenance, battery packs such as power batteries and low-voltage batteries will reserve an installation and maintenance window on the shell, which brings the risk of seal failure. As we all know, for battery products, the requirements for watertight structures are very high. If the seal is not good, water vapor or rainwater will enter the battery, which will cause a short circuit in the battery, thus causing serious accidents such as fire.

[0003] There are two common ways to repair windows. The first is to set a combination of metal plates, foam sealing strips and bolts on the window. This method has several problems. The first is that the sealing strip itself is not cheap, and the effective sealing width is 6mm, which requires enough space to use. It is not suitable for places with high structural size restrictions. In addition, metal plates and bolts are exposed to the natural environment for a long time, which will lead to corrosion failure and other risks. The second method is to add a plastic cover to the window for laser welding and sealing. This method requires the development of corresponding welding equipment, and cold welding and welding defects occur from time to time, and the reliability is poor.

[0004] Therefore, the sealing of the battery maintenance window in the prior art has the problems of poor reliability and overly restrictive installation requirements. Utility Model Content

[0005] In view of the above problems, the utility model aims to provide a sealing device, a sealing assembly and a battery, which can solve the problems of poor reliability and overly limited installation requirements of the sealing of the battery maintenance window in the prior art.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A sealing device, used for being installed at a sealing installation hole of a sealed object, comprising:

[0008] A sealing body, wherein a buckle structure is provided at the head of the sealing body, and a supporting structure is provided at the tail of the sealing body, wherein when the sealing body is inserted into the sealing installation hole, the supporting structure is supported against the outer end of the sealing installation hole, and the buckle structure is buckled at the inner end of the sealing installation hole, and the supporting structure and the buckle structure jointly fix the sealing body in the sealing installation hole; and

[0009] A sealing member is arranged on the sealing body and is used to form a sealed connection between the sealing body and the sealing mounting hole.

[0010] In a feasible embodiment of the utility model, the snap-on structure includes at least one elastic snap-on sheet, one end of the elastic snap-on sheet is arranged at the tail of the sealing body, and the other end of the elastic snap-on sheet is provided with a snap-on protrusion structure, and the elastic snap-on sheet can overlap and abut against the inner end of the sealing mounting hole.

[0011] In a feasible embodiment of the present invention, the middle and tail portions of the sealing body are hollow structures, and a plurality of elastic snap-fit ​​pieces are arranged at intervals at the tail portion of the sealing body.

[0012] In a feasible embodiment of the present invention, a guide structure is provided at the end of the elastic buckle piece.

[0013] In a feasible embodiment of the present utility model, the sealing member is arranged in the middle of the sealing body.

[0014] In a feasible embodiment of the present utility model, the sealing member is annular and is sleeved on the middle part of the sealing body.

[0015] In a feasible embodiment of the present utility model, at least one installation groove is provided in the middle of the sealing body, and the sealing member is provided on the installation groove.

[0016] In a feasible embodiment of the utility model, the sealing member is arranged on the abutting structure of the sealing tail, and the sealing member forms a seal between the abutting structure and the sealing mounting hole when the sealing body is inserted into the sealing mounting hole.

[0017] The utility model also provides a sealing assembly, comprising:

[0018] A mounting member, wherein the mounting member is provided with a sealing mounting hole; and

[0019] At least one of the sealing devices is disposed on the sealing mounting hole.

[0020] The utility model also provides a battery, comprising:

[0021] A battery housing is provided with at least one of the sealing devices and / or at least one of the sealing components.

[0022] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:

[0023] The sealing device provided by the utility model can fix the sealing device in the sealing installation hole by using the supporting structure and the snap-fit ​​structure to work together in front and behind by respectively arranging a supporting structure and a snap-fit ​​structure at the head and tail of the sealing body, and can realize the overall sealing operation of the sealing installation hole in combination with the setting of the sealing part. Since the connection setting is corresponding to the outer end and the inner end of the sealing installation hole, the overall installation space requirement can be reduced, and the operation is convenient and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the sealing device provided by an embodiment of the utility model from a first viewing angle;

[0025] Figure 2 is a structural schematic diagram of the sealing device provided by an embodiment of the utility model from a second viewing angle;

[0026] Figure 3 It is a schematic diagram of the cross-sectional shape structure of the sealing device provided by the embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of another cross-sectional structure of the sealing device provided by the embodiment of the utility model;

[0028] Figure 5 It is a schematic diagram of the cross-sectional shape structure of the sealing assembly provided in an embodiment of the utility model.

[0029] In the accompanying drawings, 1. sealing body; 2. snap-fit ​​structure; 21. elastic snap-fit ​​sheet; 22. snap-fit ​​protrusion structure; 23. guide structure; 3. abutment structure; 4. sealing member; 5. mounting groove; 100. sealing object; 200. sealing mounting hole; 300. sealing device; 400. mounting member. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solution of the utility model patent in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Example 1

[0034] See also Figure 1-3 ,in Figure 1 and Figure 2 They are schematic diagrams of the three-dimensional structure of the sealing device from two different perspectives. Figure 3 : is a schematic diagram of the cross-sectional structure of a sealing device. A sealing device provided in this embodiment is used to be installed at a sealing installation hole 200 of a sealing object 100, comprising:

[0035] A sealing body 1, wherein a buckle structure 2 is provided at the head of the sealing body 1, and a supporting structure 3 is provided at the tail of the sealing body 1, wherein when the sealing body 1 is inserted into the sealing installation hole 200, the supporting structure 3 is supported against the outer end of the sealing installation hole 200, and the buckle structure 2 is buckled at the inner end of the sealing installation hole 200, and the supporting structure 3 and the buckle structure 2 jointly fix the sealing body 1 in the sealing installation hole 200; and

[0036] A sealing member 4 is disposed on the sealing body 1 and is used to form a sealed connection between the sealing body 1 and the sealing mounting hole 200 .

[0037] It can be understood that in the present embodiment, the sealing object 100 mainly refers to an object that needs to be sealed. For example, in the present embodiment, the battery pack shell that needs to be sealed is mainly used as an example for explanation. In other embodiments, those skilled in the art can apply the sealing device in the present embodiment to different objects, which also fall within the scope of protection required by the present utility model. For example, other cans, bottles, shells, plates, boxes, etc. can all be used as the sealing objects 100, which are not listed one by one here.

[0038] It is understandable that the sealing installation hole 200 refers to a general installation hole position, such as in the present embodiment it may refer to the maintenance window of the battery shell, and in other embodiments it may also be a general hole position or other hole structure that needs to be sealed, which will not be further listed here. Furthermore, the structure of the hole generally includes two ends, and in the present embodiment the outer end of the outer side of the sealing object 100 corresponds to the outer end of the sealing installation hole 200, which is the end facing the outside of the sealing object 100, and the inner end of the sealing installation hole 200 is the end facing the inside of the sealing object 100, and generally speaking, both the outer end and the inner end have a certain end surface portion, and the abutment structure 3 and the buckle structure 2 in the present embodiment cooperate with the end surface to achieve locking and fixation.

[0039] It is understood that the function of the seal 4 is mainly to play a specific sealing role. The seal 4 can be a general seal ring, a seal ring, a seal strip, etc. The specific material can be common materials such as rubber, plastic, sponge, silicone, etc., which will not be further described here. Those skilled in the art can choose to use it according to actual needs. It is also understood that the seal 4 is tightly fitted with the inner wall of the sealing installation hole of the sealing body 1 and the sealing object 100, so as to achieve a sealing effect.

[0040] In the embodiment of the present utility model, Figure 2 As shown in the figure, the snap-on structure 2 includes at least one elastic snap-on piece 21, one end of the elastic snap-on piece 21 is arranged at the tail of the sealing body 1, and the other end of the elastic snap-on piece 21 is provided with a snap-on protrusion structure 22, and the elastic snap-on piece 21 can overlap and abut against the inner end of the sealing mounting hole 200.

[0041] It can be understood that the sealing device provided in the present embodiment needs to insert the sealing body 1 into the sealing mounting hole 200 when it is installed. Therefore, in order to ensure that the sealing device can be smoothly inserted into the sealing mounting hole 200 and the buckle structure 2 can be buckled on the inner end of the sealing mounting hole 200 after insertion, the size of the sealing body 1 can be slightly smaller than or equal to the size of the sealing mounting hole 200, but the size of the buckle structure 2 should be slightly larger than the size of the sealing mounting hole 200, so that when the sealing body 1 is inserted into the sealing mounting hole 200, the sealing body 1 and the buckle structure 2 can be pressed into the sealing mounting hole 200 by pressing, squeezing, etc. During the process, the buckle structure 2 can be deformed to facilitate entering the sealing mounting hole 200. After the buckle structure 2 passes through the sealing mounting hole 200, it restores its original shape, and makes the buckle protrusion structure 22 overlap and abut against the inner end face of the sealing mounting hole 200, and at this time the abutting structure 3 also abuts against the outer end face of the sealing mounting hole 200, so that the sealing device forms a fixed connection between the two ends of the sealing mounting hole 200.

[0042] It can be understood that in the present embodiment, the buckle structure 2 and the sealing body 1 can be an integrated structure setting or a separate setting. In the present embodiment, the integrated structure setting is taken as an example for explanation. In other embodiments, the buckle structure 2 can be a combination of two materials of different materials; and considering that the buckle structure 2 needs to have a certain elastic recovery ability, its material can be conventional materials such as rubber, plastic, metal sheet, etc., and technical personnel in this field can choose the setting according to actual conditions, and no further description is given here.

[0043] In the embodiment of the present utility model, Figure 2 , Figure 3 As shown, the middle and tail portions of the sealing body 1 are hollow structures, and a plurality of elastic snap-fit ​​pieces 21 are arranged at intervals at the tail portion of the sealing body 1 .

[0044] It is understandable that the sealing body 1 can be a conventional shape such as a cylindrical shape or a polygonal shape, and it can be changed mainly according to the shape of the sealing installation hole 200. In this embodiment, a cylindrical shape is used as an example for explanation, and the corresponding buckle structure 2 can also be adaptively changed into a simple shape according to the corresponding shape of the sealing body 1, which will not be further described here. Figure 2 As shown in the figure, in this embodiment, four elastic snap-on sheets 21 are arranged at intervals in the circumferential direction at the rear of the sealing body 1 as an example for explanation, but in other embodiments, the elastic snap-on sheet 21 can be one sheet or other numbers. The specific number can be set by those skilled in the art according to actual needs and is not further listed here.

[0045] like Figure 3 As shown, in the embodiment of the utility model, the end of the elastic buckle piece 21 is provided with a guide structure 23. The guide structure 23 can be chamfered, specifically, it can be a conventional method such as a rounded corner or a right angle chamfer, and the guide structure 23 facilitates the sealing body 1 to be inserted into the sealing installation hole 200.

[0046] In the embodiment of the present utility model, Figure 2 , Figure 3 As shown in , the seal 4 is arranged in the middle of the seal body 1. It can be understood that the seal 4 mainly functions to form a seal between the seal body 1 and the seal installation hole 200, so it is only necessary to arrange the seal 4 on the seal body 1 and in the circumferential direction to form a seal when installing the sealing device.

[0047] Specifically, in the embodiment of the utility model, the seal 4 is annular, and the seal 4 is sleeved in the middle of the sealing body 1. It can be understood that the annular shape of the seal 4 can be adaptively changed according to the main shape of the sealing body 1, as long as it can closely fit the external shape of the sealing body 1 to form a seal, and no further description is given here. In addition, the seal 4 can be fixedly set as an integral part with the sealing body 1, or it can be set as a separate body. For example, if the sealing body 1 is made of metal and the seal 4 is made of rubber, a separate body can be selected. If both are made of rubber plastic, an integrated body can be selected. The specific selection and setting can be made according to actual needs, and no further description is given here.

[0048] In the embodiment of the present utility model, Figure 2 as well as Figure 3 As shown in the figure, at least one installation groove 5 is provided in the middle of the sealing body 1, and the sealing member 4 is provided on the installation groove 5. It can be understood that the function of the installation groove 5 is to fix the position of the sealing member 4 to prevent the position of the sealing strip from changing during the installation and removal process. In addition, when multiple sealing members 4 are provided, the multiple sealing members 4 can also be separated so that each sealing member 4 can play a sealing role independently. For example, in this embodiment, two installation grooves 5 are provided, and two sealing members 4 are provided correspondingly, so that the two sealing members 4 can form a two-level sealing protection effect. In other embodiments, the number of sealing members 4 and installation grooves 5 can be set according to actual needs, which will not be further described here.

[0049] In the embodiment of the present utility model, Figure 4 As shown, it is a schematic diagram of another cross-sectional shape structure of the sealing device in this embodiment, the sealing member 4 is arranged on the abutting structure 3 at the sealing tail, and when the sealing body 1 is inserted into the sealing mounting hole 200, the sealing member 4 forms a seal between the abutting structure 3 and the sealing mounting hole 200.

[0050] It is understandable that, unlike the seal 4 being arranged in the middle of the sealing body 1, the seal 4 can also be arranged on the abutting structure 3 at the rear of the sealing body 1. Except for the different positions, other structural details can refer to the case of being arranged in the middle of the sealing body 1, and the installation groove 5 can also be arranged to facilitate the fixed arrangement of the seal 4. The seal 4 is arranged on the abutting structure 3 at the rear of the sealing body 1. When the sealing device is installed, after the sealing device is pressed into the sealing installation hole 200, the seal 4 is also pressed and fitted between the abutting structure 3 and the outer end surface of the sealing installation hole 200 to form a seal. More details can be understood by referring to the above description, and no further description is repeated here.

[0051] Further, such as Figure 3 and Figure 4As shown in the figure, the seal 4 can be arranged at one of the positions of the abutting structure 3 and the middle of the sealing body 1, or can be arranged at both positions at the same time. Those skilled in the art can arrange it according to actual needs.

[0052] It can be understood that the sealing device in this embodiment can be a disposable sealing product or a reusable product. For example, when it needs to be disassembled, it can be grabbed and pulled out or pried open using calipers or pliers. If part of the buckle structure 2 is made of plastic, etc., the sealing device can be pulled out as a whole after it is deformed, or the sealing device can be directly destroyed and then opened, such as by pulling the buckle structure 2 apart. Specific technical personnel in this field can understand and implement it based on the above description, and no further description is given here.

[0053] Working process and principle of the sealing device of the utility model:

[0054] Taking the sealing strip set in the middle of the sealing body 1 as an example, when the sealing device is in use, the head of the sealing body 1 is directly aligned with the sealing mounting hole 200 and inserted into the sealing mounting hole 200 by simply pressing, so that after the head passes through the sealing mounting hole 200, the snap-on structure 2 elastically recovers and overlaps and abuts against the inner end face of the sealing mounting hole 200, and at the same time, the abutting structure 3 at the tail of the sealing body 1 tightly abuts against the outer end face of the sealing mounting hole 200. At this time, the sealing member 4 is tightly fitted between the sealing body 1 and the sealing mounting hole 200 to form a seal.

[0055] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:

[0056] The sealing device provided by the utility model can fix the sealing device in the sealing installation hole 200 by using the supporting structure 3 and the snap structure 2 to work together in front and behind by respectively arranging the supporting structure 3 and the snap structure 2 at the head and tail of the sealing body 1, and can realize the overall sealing operation of the sealing installation hole 200 in combination with the setting of the sealing member 4. Since the connection setting is corresponding to the outer end and the inner end of the sealing installation hole 200, the overall installation space requirement can be reduced, and the operation is convenient and the reliability is high.

[0057] Example 2

[0058] See also Figure 5 , is a schematic diagram of the cross-sectional shape structure of a sealing component provided in this embodiment. The utility model also provides a sealing component, including:

[0059] A mounting member 400, wherein the mounting member 400 is provided with a sealing mounting hole 200; and

[0060] At least one sealing device 300 is provided on the sealing mounting hole 200 .

[0061] It is understandable that the mounting member 400 itself can be a separate product or a component on a product, that is, it can be integrated with other products or separately set. Those skilled in the art can choose the setting according to actual needs.

[0062] The sealing device 300 and the sealing installation hole 200 can be understood and implemented by referring to the description in the above embodiment, and will not be further expanded here. Furthermore, the sealing installation hole 200 of the mounting member can also be provided with a sink hole according to actual needs, such as Figure 5 As shown in the figure, the abutment structure 3 of the sealing device 300 can be sunk into the mounting member 400, eliminating the problem of the sealing device 300 occupying external components after installation. Of course, since the thickness of the abutment structure 3 is not large, technicians in this field can freely choose the setting according to the actual installation space, which will not be further described here.

[0063] Example 3

[0064] The utility model also provides a battery, comprising:

[0065] A battery housing is provided with at least one of the sealing devices and / or at least one of the sealing components.

[0066] It can be understood that the battery and the battery shell can be existing products, the main difference between which is that the sealing device or sealing assembly described in this embodiment is used thereon. More details can be described with reference to the aforementioned embodiments, which will not be repeated here.

[0067] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A sealing device, used for installation at a sealing installation hole of a sealed object, characterized in that: include: A sealing body, wherein a buckle structure is provided at the head of the sealing body, and a supporting structure is provided at the tail of the sealing body. When the sealing body is inserted into the sealing installation hole, the supporting structure is supported against the outer end of the sealing installation hole, and the buckle structure is buckled at the inner end of the sealing installation hole. The supporting structure and the buckle structure jointly fix the sealing body in the sealing installation hole; as well as A sealing member is arranged on the sealing body and is used to form a sealed connection between the sealing body and the sealing mounting hole.

2. The sealing device according to claim 1, characterized in that: The snap-on structure comprises at least one elastic snap-on sheet, one end of which is arranged at the rear of the sealing body, and the other end of which is provided with a snap-on protrusion structure, and the elastic snap-on sheet can overlap and abut against the inner end of the sealing installation hole.

3. The sealing device according to claim 2, characterized in that: The middle and tail portions of the sealing body are hollow structures, and a plurality of elastic buckle pieces are arranged at intervals at the tail portion of the sealing body.

4. The sealing device according to claim 2, characterized in that: A guide structure is arranged at the end of the elastic buckle piece.

5. The sealing device according to claim 1, characterized in that: The sealing member is arranged in the middle of the sealing body.

6. The sealing device according to claim 5, characterized in that: The sealing member is annular and is sleeved on the middle part of the sealing body.

7. The sealing device according to claim 5, characterized in that: At least one mounting groove is arranged in the middle of the sealing body, and the sealing member is arranged on the mounting groove.

8. The sealing device according to claim 1, characterized in that: The sealing member is arranged on the abutting structure of the sealing tail portion, and when the sealing body is inserted into the sealing installation hole, the sealing member forms a seal between the abutting structure and the sealing installation hole.

9. A sealing assembly, characterized in that: include: A mounting member, wherein the mounting member is provided with a sealing mounting hole; and At least one sealing device according to any one of claims 1 to 8, wherein the sealing device is arranged on the sealing mounting hole.

10. A battery, characterized in that: include: A battery housing, wherein the battery housing is provided with at least one sealing device according to any one of claims 1 to 8 and / or at least one sealing assembly according to claim 9.

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