Airbag assembly and battery restraining disc

Abstract

The utility model discloses an air bag assembly and a battery restraining disc. The air bag assembly comprises an air bag main body and a battery restraining disc, the outer side of the outer tire is provided with an extrusion face suitable for extruding a to-be-restrained piece, the inner side of the outer tire is provided with an installation cavity, the air bag body is arranged in the installation cavity so that the expansion range of the air bag body can be limited by the outer tire, and when the air bag body is in an expansion state, the air bag body supports the outer tire to be formed. According to the air bag assembly disclosed by the utility model, the structure comprising the air bag main body and the outer tire is arranged, so that the pressure intensity borne by the air bag assembly can be improved, the air bag assembly can provide enough extrusion force for the to-be-restrained piece, and the to-be-restrained piece can be ensured to be subjected to relatively uniform extrusion force; and the outer tire can limit the expansion range of the air bag main body through the mounting cavity with limited space, so that structural damage caused by excessive expansion of the air bag main body can be effectively avoided, and the stability and reliability of the air bag assembly can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to an airbag assembly and a battery restraint plate. Background Art

[0002] During the formation or other processes of the battery, a certain pressure needs to be applied to the large surface of the battery. In the related art, the tray device applies a squeezing force to the battery through an airbag. However, the airbag structure used in the tray device is usually formed by wrapping a single sheet around an air pipe and welding it together. The strength of the airbag structure is poor, and the pressure it can withstand is small, so it cannot provide enough squeezing force for the battery, which is not conducive to discharging the gas generated between the electrode plates during charging. Summary of the Utility Model

[0003] The first object of the utility model is to provide a new technical solution for an airbag assembly, which can at least solve the technical problem that the existing airbag can withstand a small pressure.

[0004] According to the first aspect of the utility model, an airbag assembly is provided, including: an airbag main body; an outer tire, on the outer side of which there is an extrusion surface adapted to extrude a workpiece to be restrained, and on the inner side of which there is an installation cavity, and the airbag main body is arranged in the installation cavity so that the outer tire defines the expansion range of the airbag main body. When the airbag main body is in an expanded state, the airbag main body supports the outer tire to be formed.

[0005] Optionally, the installation cavity is configured as a sealed cavity.

[0006] Optionally, the airbag assembly further includes: a drainage tube, the first end of which is arranged on the airbag main body and is communicated with the airbag main body, and the second end of which is arranged outside the installation cavity.

[0007] Optionally, both ends of the airbag main body in the length direction are connected to the outer tire.

[0008] Optionally, the airbag assembly includes: a tubular body, at both ends of which in the length direction there are a first sealing part and a second sealing part, and the first sealing part and the second sealing part seal both ends of the tubular body to form the airbag main body.

[0009] Optionally, the drainage tube includes: a tube body, the first end of which is arranged on the airbag main body and is communicated with the inside of the airbag main body, and the second end of which is placed outside the outer tire; an annular sheet body, which extends along the circumferential direction of the tube body, and the annular sheet body is arranged at the first end of the tube body and is connected to the airbag main body.

[0010] Optionally, the thickness of the annular sheet body is the same as the thickness of the wall body of the airbag main body.

[0011] Optionally, the first end of the tube body is disposed inside the airbag body, and the annular sheet is connected to the inner wall surface of the airbag body.

[0012] Optionally, the circumferential side wall of the tubular material body is provided with a through hole, and the tube body extends out of the airbag body through the through hole.

[0013] Optionally, the outer tire includes: a sealing layer, an inner wall surface of the sealing layer defining the installation cavity; a fiber layer, the fiber layer being disposed outside the sealing layer; and an anti-adhesive isolation layer, the anti-adhesive isolation layer being disposed outside the fiber layer.

[0014] Optionally, the outer tire includes: a first sheet; a second sheet, the second sheet being stacked on the first sheet, an outer periphery of the first sheet being connected to an outer periphery of the second sheet, and the first sheet and the second sheet defining the installation cavity.

[0015] Optionally, the drainage tube is disposed between the first sheet and the second sheet.

[0016] Optionally, the outer tire is provided with a third sealing edge portion, a connection position of the first sheet and the second sheet forming the third sealing edge portion, and at least a part of the first sealing edge portion and the second sealing edge portion coincides with the third sealing edge portion.

[0017] Optionally, a fixing portion is provided on an outer periphery of the outer tire, and the fixing portion is provided with an installation fixing hole.

[0018] Optionally, the drainage tube is an integrally formed injection molded part.

[0019] According to a second aspect of the present invention, there is provided a battery restraint disc including the airbag assembly according to any one of the above.

[0020] According to the airbag assembly of the present invention, by providing a structure including an airbag body and an outer tire, the pressure that the airbag assembly can withstand can be increased, so that the airbag assembly can provide sufficient squeezing force for the member to be restrained, ensuring that the member to be restrained can receive a relatively uniform squeezing force. Moreover, the outer tire can limit the expansion range of the airbag body through the installation cavity in a limited space, and can effectively avoid structural damage caused by excessive expansion of the airbag body, thereby ensuring the stability and reliability of the airbag assembly.

[0021] Other features and advantages of the present invention will become clear from the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description thereof, are used to explain the principles of the present utility model.

[0023] Figure 1 is a schematic structural view of an airbag assembly according to an embodiment provided by the present utility model from one perspective;

[0024] Figure 2 is a schematic structural view of an airbag assembly according to an embodiment provided by the present utility model from another perspective;

[0025] Figure 3 is a sectional view of an airbag assembly according to an embodiment provided by the present utility model;

[0026] Figure 4 is a schematic structural view of a drainage tube of an airbag assembly according to an embodiment provided by the present utility model;

[0027] Figure 5 is a schematic structural view of an airbag body of an airbag assembly according to an embodiment provided by the present utility model;

[0028] Figure 6 is a schematic structural view of an airbag body and a drainage tube of an airbag assembly after assembly according to an embodiment provided by the present utility model;

[0029] Figure 7 is a partial schematic structural view of an outer tire of an airbag assembly according to an embodiment provided by the present utility model.

[0030] Figure 8 is a schematic structural view of a battery restraint plate after installing a battery according to an embodiment provided by the present utility model;

[0031] Figure 9 is a sectional view of a battery restraint plate after installing a battery according to an embodiment provided by the present utility model.

[0032] Reference numerals:

[0033] Airbag assembly 100;

[0034] Airbag body 10; First sealing edge portion 11; Second sealing edge portion 12; Penetrating hole 13;

[0035] Outer tire 20; Sealing layer 21; Fiber layer 22; Anti-sticking isolation layer 23; Third sealing edge portion 24; Mounting and fixing hole 24a;

[0036] Drainage tube 30; Tube body 31; Annular sheet body 32;

[0037] Battery restraint plate 200; Plate body 210; Valve 211; Airbag fixing block 212;

[0038] Battery 300. Detailed implementation mode

[0039] Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model or its application or use.

[0041] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0042] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0044] The airbag assembly 100 according to an embodiment of the present utility model will be specifically described below with reference to the accompanying drawings.

[0045] As Figures 1 to 3 shown, the airbag assembly 100 according to an embodiment of the present utility model includes: an airbag main body 10 and an outer tire 20.

[0046] Specifically, an extrusion surface adapted to extrude a member to be restrained is provided on the outer side of the outer tire 20, and an installation cavity is provided on the inner side of the outer tire 20. The airbag main body 10 is disposed in the installation cavity so that the outer tire 20 defines the expansion range of the airbag main body 10. When the airbag main body 10 is in an expanded state, the airbag main body 10 supports the outer tire 20 to be formed.

[0047] In other words, as Figures 1 to 3As shown in the figure, the airbag assembly 100 according to an embodiment of the present invention mainly includes an airbag body 10 and an outer tire 20. Among them, the airbag body 10 can be formed into a flat bag structure, and the outer tire 20 can also be formed into a flat bag structure. The outer tire 20 has a first surface and a second surface that are oppositely arranged in its own thickness direction. Both the first surface and the second surface can be used as pressing surfaces for pressing the workpiece to be constrained (for example, the battery 300). An installation cavity suitable for accommodating the airbag body 10 is provided inside the outer tire 20, and the airbag body 10 can be installed in the installation cavity. When the airbag body 10 is in an inflated state, the airbag body 10 can support the outer tire 20 in the installation cavity, so that the clamping surface of the outer tire 20 can closely fit the large surface of the battery 300 to press the large surface of the battery 300. And the outer tire 20 can limit the expansion range of the airbag body 10 through the installation cavity with a limited space, which can effectively avoid structural damage caused by excessive expansion of the airbag body 10, so that the airbag assembly 100 can withstand a pressure greater than 0.5 mpa and can provide sufficient pressing force for the workpiece to be constrained.

[0048] Therefore, for the airbag assembly 100 according to an embodiment of the present invention, by setting a structure including the airbag body 10 and the outer tire 20, the pressure that the airbag assembly 100 can withstand can be increased, so that the airbag assembly 100 can provide sufficient pressing force for the workpiece to be constrained, ensuring that the workpiece to be constrained can receive a relatively uniform pressing force. Moreover, the outer tire 20 can limit the expansion range of the airbag body 10 through the installation cavity with a limited space, which can effectively avoid structural damage caused by excessive expansion of the airbag body 10, thereby ensuring the stability and reliability of the airbag assembly 100.

[0049] In some alternative examples of the present invention, the installation cavity is configured as a sealed cavity.

[0050] That is to say, setting the installation cavity as a sealed cavity can enable the airbag assembly 100 to have two seals, which is beneficial to maintaining the air pressure stability inside the airbag body 10, preventing gas leakage, thereby ensuring that the airbag assembly 100 can continuously provide a stable pressing force during use, and prolonging the service life of the airbag assembly 100 and reducing the maintenance cost.

[0051] According to an embodiment of the present invention, the airbag assembly 100 further includes: a drainage tube 30. The first end of the drainage tube 30 is provided on the airbag body 10 and is communicated with the airbag body 10. The second end of the drainage tube 30 is provided outside the installation cavity.

[0052] In other words, as Figures 1 to 3As shown in the figure, in order to implement the inflation and deflation operations of the airbag main body 10, a drainage tube 30 is provided on one side of the airbag main body 10. The first end of the drainage tube 30 is communicated with the inside of the airbag main body 10, and the second end of the drainage tube 30 passes through the outer tire 20 and is located outside the installation cavity to facilitate connection with an external pipeline. In this way, the airbag main body 10 can be inflated or deflated through the drainage tube 30, so that the air pressure inside the airbag main body 10 can be controlled, and thus the magnitude of the extrusion force exerted by the extrusion surface on the workpiece to be constrained can be controlled.

[0053] Furthermore, the outer periphery of the drainage tube 30 is hermetically connected to the outer tire 20, so as to ensure that the installation cavity can be formed as a sealed cavity.

[0054] In some specific embodiments of the present utility model, both ends of the airbag main body 10 in the length direction are connected to the outer tire 20.

[0055] Specifically, as Figure 2 shown, when the airbag main body 10 is not inflated, the airbag main body 10 is generally a rectangular bag body, and both ends of the airbag main body 10 in the length direction are connected to the outer tire 20 together, so as to effectively prevent the airbag main body 10 from being displaced during the inflation process; and since the circumferential side wall of the airbag main body 10 is not connected to the outer tire 20, this can avoid the outer tire 20 affecting the expansion or contraction of the airbag main body 10.

[0056] In some alternative examples of the present utility model, the airbag assembly 100 includes: a tubular material body. The first sealing portion 11 and the second sealing portion 12 are provided at both ends of the tubular material body in its length direction. The first sealing portion 11 and the second sealing portion 12 seal both ends of the tubular material body to form the airbag main body 10.

[0057] That is to say, as Figure 4 shown, the airbag main body 10 can be made of a tubular material body. For example, the airbag main body 10 is made of a TPU tube material. Both ends of the tubular material body are open ends. During production and manufacturing, both ends of the tubular material body are welded and sealed by a high-frequency welding device, so that the first sealing portion 11 and the second sealing portion 12 are formed at both ends of the tubular material body, thereby realizing the sealing of both ends of the tubular material body and thus forming the required airbag main body 10.

[0058] Therefore, the airbag main body 10 adopts the above structure, which is not only simple in structure and easy to manufacture, but also compared with the prior art of preparing by a single sheet material, the total length of the welding and sealing required for the airbag main body 10 in this example is shorter, which is beneficial to ensuring the airtightness of the airbag main body 10 and can optimize the yield of airtightness production.

[0059] Optionally, before the tubular body is welded and sealed at the edges, the first end of the drainage tube 30 can be inserted into one end of the tubular body, and then the two ends of the tubular body are welded and sealed, so that the drainage tube 30 and the airbag main body 10 are hermetically connected.

[0060] According to an embodiment of the present invention, the drainage tube 30 includes: a tube body 31 and an annular sheet body 32. The first end of the tube body 31 is disposed in the airbag main body 10 and is in communication with the interior of the airbag main body 10. The second end of the tube body 31 is placed outside the outer tire 20. The annular sheet body 32 extends along the circumference of the tube body 31. The annular sheet body 32 is disposed at the first end of the tube body 31, and the annular sheet body 32 is connected to the airbag main body 10.

[0061] In other words, as Figure 4 and Figure 6 shown, the drainage tube 30 according to the embodiment of the present invention mainly includes a tube body 31 and an annular sheet body 32. Among them, the inner contour of the annular sheet body 32 is connected to the outer peripheral surface of the first end of the tube body 31, so that the tube body 31 and the annular sheet body 32 are connected as a whole, and the transition at the junction of the annular sheet body 32 and the tube body 31 is smooth. During production and assembly, the first end of the tube body 31 is in communication with the interior of the airbag main body 10, and the annular sheet body 32 and the airbag main body 10 are welded together by a high-frequency welding device, so as to realize the connection between the drainage tube 30 and the airbag main body 10, and the connection strength between the drainage tube 30 and the airbag main body 10 can be ensured, and it can prevent detachment or leakage during the inflation process.

[0062] Thus, after the airbag main body 10 is inflated and expanded, the tensile stress is evenly distributed on the annular sheet body 32 of the drainage tube 30, and there is no stress concentration area, which can optimize the stress structure of the airbag assembly 100 and increase the service life of the airbag assembly 100.

[0063] In some specific embodiments of the present invention, the thickness of the annular sheet body 32 is the same as the thickness of the wall body of the airbag main body 10, so as to avoid the problem that one of the annular sheet body 32 and the airbag main body 10 is penetrated when the annular sheet body 32 and the airbag main body 10 are welded by a high-frequency welding device, and the airtightness of the airbag assembly 100 can be ensured.

[0064] Optionally, the thickness of the annular sheet body 32 is 0.2 mm to 0.3 mm.

[0065] As Figures 1 to 3 shown, in some alternative examples of the present invention, the first end of the tube body 31 is disposed inside the airbag main body 10, and the annular sheet body 32 is connected to the inner wall surface of the airbag main body 10. This connection method makes the connection between the drainage tube 30 and the airbag main body 10 more firm and not easy to fall off.

[0066] According to an embodiment of the present utility model, a through hole 13 is provided on the circumferential side wall of the tubular material body, and the tube body 31 extends out of the airbag main body 10 from the through hole 13.

[0067] Specifically, as Figure 5 and Figure 6 shown, during production and manufacturing, a through hole 13 adapted to the tube body 31 can be provided on the side wall of the tubular material body. Before the tubular material body is welded and sealed at the edges, the drainage tube 30 is placed inside the tubular material body from one end of the tubular material body, and then the second end of the tube body 31 extends out of the tubular material body from the through hole 13, and the annular sheet body 32 is made to fit against the inner wall surface of the tubular material body. Subsequently, the annular sheet body 32 is welded to the tubular material body by a high-frequency welding device, and finally the two ends of the tubular material body are welded and sealed to obtain the airbag main body 10 with the drainage tube 30.

[0068] In this embodiment, the tube body 31 extends out of the tubular material body from the through hole 13, and the annular sheet body 32 is connected to the inner circumferential surface of the tubular material body. Compared with the prior art where a sheet material directly wraps the trachea, the reliability of the sealed connection between the drainage tube 30 and the airbag main body 10 can be ensured, thereby effectively avoiding the problem of air leakage at the connection between the drainage tube 30 and the airbag main body 10.

[0069] Further, the outer contour of the annular sheet body 32 is circular.

[0070] In some specific embodiments of the present utility model, the outer tire 20 includes a sealing layer 21, a fiber layer 22, and an anti-sticking isolation layer 23. The inner wall surface of the sealing layer 21 defines an installation cavity, the fiber layer 22 is provided on the outside of the sealing layer 21, and the anti-sticking isolation layer 23 is provided on the outside of the fiber layer 22.

[0071] That is to say, as Figure 7 shown, the outer tire 20 is made of a composite material. For example, the outer tire 20 mainly includes a sealing layer 21. The inner wall surface of the sealing layer 21 can define an installation cavity with good sealing performance. The outer surface of the sealing layer 21 is provided with a fiber layer 22. Through the fiber layer 22, the structural strength of the outer tire 20 can be improved, which is beneficial for the outer tire 20 to maintain a certain inflated shape after inflation, can prevent the airbag main body 10 from expanding endlessly, and can ensure the reliability of the outer tire 20 in defining the airbag main body 10; the outer surface of the fiber layer 22 is provided with an anti-sticking isolation layer 23. Through the anti-sticking isolation layer 23, solid or liquid penetration can be isolated, and the outer tire 20 can be prevented from adhering to the object to be constrained (for example, metal or non-metal battery 300 products), facilitating subsequent use.

[0072] Optionally, the material of the sealing layer 21 is, for example, but not limited to, polyester-based TPU or polyether-based TPU; the material of the fiber layer 22 can be nylon or other fiber materials with relatively strong tensile properties; the anti-sticking isolation layer 23 can be TPU with a matte surface.

[0073] In some alternative examples of the present utility model, the outer tire 20 includes: a first sheet body and a second sheet body. The second sheet body is stacked on the first sheet body. The outer periphery of the first sheet body is connected to the outer periphery of the second sheet body. The first sheet body and the second sheet body define an installation cavity.

[0074] Specifically, the outer tire 20 can be composed of the first sheet body and the second sheet body. That is, during production and manufacturing, the second sheet body is stacked on the first sheet body. The outer periphery of the first sheet body and the outer periphery of the second sheet body can be welded together by a high-frequency welding device, so that the surfaces of the first sheet body and the second sheet body that are close to each other define an installation cavity. This structure makes the manufacturing of the outer tire 20 simpler and also helps to improve production efficiency.

[0075] According to an embodiment of the present utility model, the drainage tube 30 is arranged between the first sheet body and the second sheet body. This design can avoid punching holes in the first sheet body and the second sheet body, and the drainage tube 30 can be hermetically connected to the outer tire 20 when the first sheet body and the second sheet body are welded, which is beneficial to improving the production efficiency of the airbag assembly 100.

[0076] In some specific embodiments of the present utility model, the outer tire 20 is provided with a third sealing edge portion 24. The connection position of the first sheet body and the second sheet body forms the third sealing edge portion 24. At least a part of the first sealing edge portion 11 and the second sealing edge portion 12 coincides with the third sealing edge portion 24.

[0077] That is to say, as Figure 1 and Figure 2 shown, the outer periphery of the first sheet body and the outer periphery of the second sheet body can be welded and sealed by a high-frequency welding device, so that the outer periphery of the first sheet body and the outer periphery of the second sheet body form a third sealing edge portion 24 connecting each other, thereby forming an outer tire 20 with a third sealing edge portion 24.

[0078] As Figure 2 shown, the first sealing edge portion 11 and the second sealing edge portion 12 can coincide with the third sealing edge portion 24. Specifically, before the first sheet body and the second sheet body are welded and sealed, the airbag main body 10 is placed between the first sheet body and the second sheet body, and then welded and sealed, so that the two ends of the airbag main body 10 can be connected and fixed while the first sheet body and the second sheet body are welded and sealed. Through this welding and sealing, the third sealing edge portion 24, and the first sealing edge portion 11 and the second sealing edge portion 12 that coincide with the third sealing edge portion 24 can be obtained.

[0079] Thus, by adopting the above structure, the airbag assembly 100 can simplify the manufacturing process of the airbag assembly 100, is beneficial to production and processing, and can effectively prevent the airbag main body 10 from being displaced during the inflation process.

[0080] Optionally, the widths of the first edge portion 11 and the second edge portion 12 are about 6 mm, the width of the third edge portion 24 is about 15 mm, and the overlapping width of the first edge portion 11 and the second edge portion 12 with the third edge portion 24 is about 4 mm.

[0081] In some alternative examples of the present utility model, a fixing portion is provided on the outer periphery of the outer tire 20, and the fixing portion is provided with mounting fixing holes 24a.

[0082] Specifically, as Figure 2 shown, the region where the third edge portion 24 is located and the first sheet body and the second sheet body on the outer periphery of the third edge portion 24 form a fixing portion. The fixing portion is provided with a plurality of mounting fixing holes 24a penetrating in the thickness direction of the first sheet body. The plurality of mounting fixing holes 24a can be evenly distributed on the outer periphery of the airbag main body 10. When in use, the airbag assembly 100 can be fixed on the airbag fixing block 212 of the battery restraint disc 200 through the mounting fixing holes 24a, which is convenient for installation.

[0083] According to an embodiment of the present utility model, the drainage tube 30 is an integrally formed injection molded part. This design enables the drainage tube 30 to have high structural strength and sealing performance, and also helps to improve production efficiency.

[0084] In summary, for the airbag assembly 100 according to the embodiment of the present utility model, by providing a structure including the airbag main body 10 and the outer tire 20, the pressure that the airbag assembly 100 can withstand can be increased, so that the airbag assembly 100 can provide sufficient extrusion force for the component to be restrained, ensuring that the component to be restrained can receive a relatively uniform extrusion force. Moreover, the outer tire 20 can limit the expansion range of the airbag main body 10 through the installation cavity with a limited space, and can effectively avoid structural damage caused by excessive expansion of the airbag main body 10, thereby ensuring the stability and reliability of the airbag assembly 100.

[0085] As Figure 8 and Figure 9 shown, the embodiment of the present utility model further provides a battery restraint disc 200, including the airbag assembly 100 described in any of the above embodiments. Since the airbag assembly 100 according to the embodiment of the present utility model has the above technical effects, the battery restraint disc 200 according to the embodiment of the present utility model also has corresponding technical effects, which will not be elaborated in this embodiment.

[0086] In some alternative examples of the present utility model, the outer tire 20 has two opposing extrusion surfaces in the first direction. The battery restraint disc 200 includes: a disc body 210 and a plurality of airbag assemblies 100. The disc body 210 is provided with a receiving groove and an air path. The plurality of airbag assemblies 100 are arranged in the receiving groove at intervals in the first direction. The plurality of airbag assemblies 100 divide the receiving groove into a plurality of restraint spaces, and the air path is communicated with the airbag main body 10.

[0087] That is to say, as Figure 9 shown, the outer tire 20 has two opposing extrusion surfaces in a first direction (e.g., the thickness direction of the outer tire 20). The battery restraint disc 200 mainly includes a disc body 210 and a plurality of airbag assemblies 100. Among them, the disc body 210 is provided with an air passage, one end of the air passage is provided with a valve 211, and a receiving groove is further provided on one side of the disc body 210. An airbag fixing block 212 spaced apart in the first direction is fixedly connected in the receiving groove. The plurality of airbag assemblies 100 are arranged in the receiving groove at intervals in the first direction. The number of airbag assemblies 100 matches the number and position of the airbag fixing blocks 212. The airbag assemblies 100 can be fixed to the corresponding airbag fixing blocks 212 by screws, and the airbag body 10 of each airbag assembly 100 is communicated with the air passage on the disc body 210.

[0088] When the battery restraint disc 200 according to the embodiment of the present invention is in use, the valve 211 away from the air passage is connected to the gas supply device. By controlling the valve 211 and the gas supply device, inflation and deflation of the airbag body 10 can be achieved; when restraining the battery 300, the battery 300 is placed in the restraint space, and then a certain amount of gas is filled into the airbag body 10, so that the airbag body 10 expands to support the outer tire 20 to be formed, so that the extrusion surface on the outer tire 20 extrudes the large surface of the battery 300, thereby achieving the purpose of restraining the battery 300; after the restraint is completed, the gas in the airbag body 10 is released, so that the extrusion force of the extrusion surface on the battery 300 becomes smaller, or the extrusion surface is spaced apart from the battery 300, and then the battery 300 can be taken out from the restraint space.

[0089] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for the purpose of limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An airbag assembly, characterized in that: include: Airbag body (10); An outer tire (20), wherein the outer side of the outer tire (20) is provided with an extrusion surface suitable for extruding a part to be restrained, and the inner side of the outer tire (20) is provided with a mounting cavity, and the airbag body (10) is arranged in the mounting cavity, so that the outer tire (20) limits the expansion range of the airbag body (10), and when the airbag body (10) is in an expanded state, the airbag body (10) supports the outer tire (20) to be formed.

2. The airbag assembly according to claim 1, characterized in that: The mounting cavity is configured as a sealed cavity.

3. The airbag assembly according to claim 1, characterized in that: Also includes: A drainage tube (30), wherein a first end of the drainage tube (30) is disposed on the airbag body (10) and is in communication with the airbag body (10), and a second end of the drainage tube (30) is disposed on the outside of the installation cavity.

4. The airbag assembly according to claim 1, characterized in that: Both ends of the airbag body (10) in the length direction are connected to the outer tire (20).

5. The airbag assembly according to claim 3, characterized in that: The airbag assembly comprises: A tubular material body is provided with a first edge sealing portion (11) and a second edge sealing portion (12) at both ends of the tubular material body in the length direction, wherein the first edge sealing portion (11) and the second edge sealing portion (12) seal the two ends of the tubular material body to form the airbag body (10).

6. The airbag assembly according to claim 5, characterized in that: The drainage tube (30) comprises: a tube body (31), wherein a first end of the tube body (31) is disposed on the airbag body (10) and communicates with the interior of the airbag body (10), and a second end of the tube body (31) is disposed outside the outer tire (20); An annular sheet (32), the annular sheet (32) extending along the circumference of the tube (31), the annular sheet (32) being arranged at the first end of the tube (31), and the annular sheet (32) being connected to the airbag body (10).

7. The airbag assembly according to claim 6, characterized in that: The thickness of the annular sheet (32) is the same as the thickness of the wall of the airbag body (10).

8. The airbag assembly according to claim 6, characterized in that: The first end of the tube body (31) is arranged inside the airbag body (10), and the annular sheet body (32) is connected to the inner wall surface of the airbag body (10).

9. The airbag assembly according to claim 6, characterized in that: A through hole (13) is provided on the circumferential side wall of the tubular material body, and the tubular body (31) extends out of the airbag body (10) through the through hole (13).

10. The airbag assembly according to claim 1, characterized in that: The tire (20) comprises: A sealing layer (21), wherein the inner wall surface of the sealing layer (21) defines the installation cavity; A fiber layer (22), the fiber layer (22) being arranged on the outer side of the sealing layer (21); An anti-sticking isolation layer (23), wherein the anti-sticking isolation layer (23) is arranged on the outer side of the fiber layer (22).

11. The airbag assembly according to claim 5, characterized in that: The tire (20) comprises: The first piece; The second sheet is stacked on the first sheet, the outer periphery of the first sheet is connected to the outer periphery of the second sheet, and the first sheet and the second sheet define the installation cavity.

12. The airbag assembly according to claim 11, characterized in that: The drainage tube (30) is arranged between the first sheet body and the second sheet body.

13. The airbag assembly according to claim 11, characterized in that: The outer tire (20) is provided with a third edge sealing portion (24), the connection position between the first sheet and the second sheet forms the third edge sealing portion (24), and the first edge sealing portion (11) and the second edge sealing portion (12) at least partially overlap with the third edge sealing portion (24).

14. The airbag assembly according to claim 1, characterized in that The outer periphery of the outer tire (20) is provided with a fixing portion, and the fixing portion is provided with an installation fixing hole (24a).

15. The airbag assembly according to claim 3, characterized in that: The drainage tube (30) is an integrally formed injection molded part.

16. A battery restraint plate, characterized in that: An airbag assembly comprising any one of claims 1 to 15.

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