Battery shell sealing structure and battery

Abstract

The utility model discloses a battery shell sealing structure and a battery, and the battery shell sealing structure comprises a first shell and a second shell, and the first shell and the second shell are each of a barrel structure with an opening at one end; the opening position of the first shell body is folded outwards to form a first buckle structure, and the opening position of the second shell body is folded outwards to form a second buckle structure used for being connected with the first buckle structure in a sealed mode. The first buckle structure comprises a V-shaped structure, and the second buckle structure comprises a groove structure and a buckle blocking boss. The V-shaped structure is used for being embedded into the groove structure and is stopped through the retaining buckle boss. The second buckle structure further comprises a sealing ring, and the sealing ring is arranged in the groove structure. According to the battery shell sealing structure and the battery provided by the embodiment of the invention, the shell is hermetically connected through the first buckle structure and the second buckle structure of the shell, so that the assembly process can be simplified, and the production cost can be reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to battery casing sealing structures and batteries. Background Technology

[0002] In the current field of rechargeable battery technology, common rechargeable battery structures typically include a casing and a top cover assembly. To achieve the battery's sealing performance, current methods typically employ roll sealing or laser welding to seal the top of the casing and the top cover assembly. However, both of these sealing methods involve complex processes and result in high production costs. Utility Model Content

[0003] The purpose of this application is to provide a battery casing sealing structure and a battery, using a battery casing with a sealing structure to simplify the assembly process and reduce production costs.

[0004] To achieve the above-mentioned objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, embodiments of this application provide a battery casing sealing structure, including: a first casing and a second casing, both of which are cylindrical structures with one end open;

[0006] The opening of the first housing is folded outward to form a first snap-fit ​​structure, and the opening of the second housing is folded outward to form a second snap-fit ​​structure for sealing connection with the first snap-fit ​​structure.

[0007] In some embodiments, the first snap-fit ​​structure is a male snap-fit ​​and the second snap-fit ​​structure is a female snap-fit; or, the first snap-fit ​​structure is a female snap-fit ​​and the second snap-fit ​​structure is a male snap-fit.

[0008] In some embodiments, the first snap-fit ​​structure includes a V-shaped structure, and the second snap-fit ​​structure includes a groove structure and a retaining boss; the V-shaped structure is used to embed into the groove structure and to prevent retraction by the retaining boss.

[0009] In some embodiments, the second snap-fit ​​structure further includes a sealing ring disposed within the groove structure.

[0010] In some embodiments, the sealing ring is made of rubber, plastic, or cured adhesive.

[0011] Secondly, embodiments of this application provide a battery, including the battery casing sealing structure provided in the first aspect above.

[0012] Compared with the prior art, the beneficial effects of the embodiments of this application are:

[0013] The battery casing sealing structure and battery provided in this application embodiment are sealed and connected by a first snap-fit ​​structure and a second snap-fit ​​structure on the casing itself, which can simplify the assembly process and reduce production costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the battery casing sealing structure provided in an embodiment of this application is shown;

[0016] Figure 2 An exploded view of the battery casing sealing structure provided in an embodiment of this application is shown;

[0017] Figure 3 A cross-sectional view of the battery casing sealing structure provided in an embodiment of this application is shown;

[0018] Figure 4 It shows Figure 3 A partial schematic diagram.

[0019] Illustration:

[0020] 10. First housing; 11. First snap-fit ​​structure; 111. V-shaped structure;

[0021] 20. Second housing; 21. Second snap-fit ​​structure; 211. Groove structure; 212. Buckle boss; 213. Sealing ring. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] To illustrate the technical solution described in this application, specific embodiments are provided below.

[0026] Please see Figures 1 to 4 As shown, this application provides a battery housing sealing structure, including: a first housing 10 and a second housing 20, both of which are cylindrical structures with one end open.

[0027] This application does not specifically limit the cylindrical shape of the first housing 10 and the second housing 20. As an example, their cylindrical shape can be a square tube, or it can be... Figures 1 to 4 The cylinder shown can also be other shapes.

[0028] The opening of the first housing 10 is folded outward to form a first snap-fit ​​structure 11, and the opening of the second housing 20 is folded outward to form a second snap-fit ​​structure 21 for sealing connection with the first snap-fit ​​structure 11.

[0029] As an example, the first snap-fit ​​structure 11 is a male snap-fit, and the second snap-fit ​​structure 21 is a female snap-fit.

[0030] As another example, the first snap-fit ​​structure 11 is a female snap-fit, and the second snap-fit ​​structure 21 is a male snap-fit.

[0031] As an example, the top cover assembly of the battery can be installed at the bottom of the first housing 10 or the second housing 20. This application embodiment does not specifically limit the structure of the top cover assembly and its installation method.

[0032] As an example, a top cover assembly typically includes a top cover plate and components such as explosion-proof valves and poles mounted on it.

[0033] As an example, the bottom of the first housing 10 or the second housing 20 can be used as the top cover plate of the top cover assembly.

[0034] As another example, the top cover assembly may also be additionally provided with a top cover plate, and then the top cover assembly is connected to the bottom of the first housing 10 or the second housing 20.

[0035] The aforementioned battery casing sealing structure uses a first snap-fit ​​structure 11 and a second snap-fit ​​structure 21 on the casing itself for sealing connection, which can simplify the assembly process and reduce production costs.

[0036] In some embodiments of this application, the first snap-fit ​​structure 11 includes a V-shaped structure 111, and the second snap-fit ​​structure 21 includes a groove structure 211 and a retaining boss 212; the V-shaped structure 111 is used to embed into the groove structure 211 and is prevented from retracting by the retaining boss 212.

[0037] As an example, the first housing 10 is an aluminum or steel housing, which gives the V-shaped structure 111 a certain degree of elasticity, so that it can be better embedded in the groove structure 211 and prevented from moving back by the retaining protrusion 212.

[0038] As an example, the first housing 10 is made by stamping and integrally forms a V-shaped structure 111.

[0039] As an example, the second housing 20 is made by stamping and the groove structure 211 and the retaining boss 212 are formed by rolling.

[0040] In some embodiments of this application, the second snap-fit ​​structure 21 further includes a sealing ring 213, which is disposed within the groove structure 211.

[0041] As an example, the sealing ring 213 may be made of rubber, plastic, or a curing adhesive. For instance, adhesive may be applied to the groove structure 211 and then cured to form the sealing ring 213.

[0042] The aforementioned battery casing sealing structure uses the V-shaped structure 111, groove structure 211, retaining protrusion 212, and sealing ring 213 inherent in the battery casing itself for sealing connection, which can simplify the assembly process and reduce production costs.

[0043] It should be noted that the embodiments of this application do not specifically limit the position of the snap-fit ​​structure. For example, it can be set in the middle, slightly above, or slightly below the entire battery casing. In other words, the height of the first casing 10 and the height of the second casing 20 can be set as needed, thus allowing the snap-fit ​​position to be adjusted.

[0044] In some embodiments of this application, a battery is also provided, including the battery casing sealing structure provided in any of the above embodiments, which also has the above-mentioned beneficial effects.

[0045] As an example, the battery is a secondary battery, such as a lithium-ion battery.

[0046] As an example, the battery also includes a top cover assembly, which can be installed at the bottom of the first housing 10 or the second housing 20. This application embodiment does not specifically limit the structure of the top cover assembly and its installation method.

[0047] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A battery case sealing structure characterized by comprising: include: The first shell and the second shell are both cylindrical structures with one end open; The opening of the first housing is folded outward to form a first snap-fit ​​structure, and the opening of the second housing is folded outward to form a second snap-fit ​​structure for sealing connection with the first snap-fit ​​structure.

2. The battery case sealing structure according to claim 1, wherein The first snap-fit ​​structure is a male snap-fit, and the second snap-fit ​​structure is a female snap-fit; or, the first snap-fit ​​structure is a female snap-fit, and the second snap-fit ​​structure is a male snap-fit.

3. The battery casing sealing structure according to claim 1, characterized in that, The first snap-fit ​​structure includes a V-shaped structure, and the second snap-fit ​​structure includes a groove structure and a retaining protrusion; the V-shaped structure is used to embed into the groove structure and to prevent retraction through the retaining protrusion.

4. The battery case sealing structure according to claim 3, wherein The second snap-fit ​​structure also includes a sealing ring, which is disposed within the groove structure.

5. The battery case sealing structure according to claim 4, wherein The sealing ring is made of rubber, plastic, or cured adhesive.

6. A battery characterized by Includes the battery casing sealing structure as described in any one of claims 1 to 5.

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