Sealing structure and battery pack

Abstract

The utility model provides a sealing structure and a battery pack, the sealing structure is arranged between two members and is used for forming the sealing between the two members, at least one member is provided with a mounting groove, the sealing structure comprises a sealing main body arranged in the mounting groove, the end face of the sealing main body is provided with an inward concave waterproof groove, and the waterproof groove is provided with a waterproof layer. At least one side of the sealing body and the inner wall of the installation groove are arranged at intervals, and a waterproof cavity is formed between the two. According to the sealing structure, the waterproof groove is formed in the end face of the sealing body, and the waterproof cavity is formed between at least one side of the sealing body and the inner wall of the mounting groove, so that water vapor and water entering the two components can be collected, and the water vapor and the water can be prevented from entering the two components; and therefore, the sealing between the two components is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a sealing structure. At the same time, the utility model also relates to a battery pack provided with the sealing structure. Background Art

[0002] A sealing structure is usually set between two components that require sealing. For example, the sealing strip in the current battery pack is set between the upper shell and the lower shell of the battery pack to achieve sealing when the upper and lower shells are connected. Existing sealing strips are mostly designed with a silicone foam structure, and the battery pack sealing width is required to be ≥8mm, which is conducive to increasing the space occupied by the battery pack. At the same time, the sealing effect of the traditional sealing structure is not high, causing water vapor outside the battery pack shell to enter the battery pack to form condensation, thereby affecting the safety of the battery pack. Utility Model Content

[0003] In view of this, the utility model aims to provide a sealing structure to improve the waterproof performance and enhance the sealing between two components.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A sealing structure is provided between two components and is used to form a seal between the two components. At least one of the components is provided with a mounting groove. The sealing structure includes a sealing body provided in the mounting groove. An inwardly concave waterproof groove is provided on the end face of the sealing body. At least one side of the sealing body is spaced apart from the inner wall of the mounting groove, and a waterproof cavity is formed between the two.

[0006] Furthermore, the side wall of the sealing body is provided with a plurality of sealing ribs located in the waterproof cavity, and the waterproof cavity is divided into a plurality of waterproof sub-cavities by the sealing ribs.

[0007] Furthermore, the sealing ribs are multiple and are arranged at intervals along the length direction of the waterproof groove.

[0008] Furthermore, a preset gap A is provided between the sealing rib and the inner wall of the mounting groove on the same side, and A satisfies: 0.5mm≤A≤1mm.

[0009] Furthermore, the number of the waterproof grooves is two and they are arranged at intervals along the width direction of the sealing body; and / or,

[0010] The waterproof groove is arranged along the extension direction of the sealing body and follows the shape of the sealing body.

[0011] Furthermore, the waterproof cavity is located on a side of the sealing body facing the interior of the two components.

[0012] Furthermore, the relationship between the height H of the sealing body and the height h of the waterproof groove is:

[0013] B=(Hh) / H, and B satisfies: 10%≤B≤35%.

[0014] Furthermore, a ratio C of a cross-sectional area S of the sealing body to a transverse area s of the mounting groove satisfies: 80%≤C≤95%.

[0015] Furthermore, the sealing body is made of rubber.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The sealing structure described in the utility model can collect water vapor and water entering the two components by forming a waterproof groove on the end face of the sealing body and a waterproof cavity between at least one side of the sealing body and the inner wall of the installation groove, which is beneficial to prevent water vapor and water from entering the interior of the two components, thereby helping to improve the sealing effect between the two components.

[0018] In addition, by setting a plurality of sealing ribs in the waterproof cavity to divide the waterproof cavity into a plurality of waterproof sub-cavities, the water flowing into the waterproof cavity can be effectively prevented from spreading to the periphery, and a multi-layer seal is formed with the waterproof groove, thereby helping to improve the sealing of the two components. Setting a plurality of sealing ribs is conducive to further improving the sealing and waterproofing effect, and is also conducive to improving the reliability of the use of the sealing body. The setting of the preset gap range is conducive to ensuring that the effective sealing width is qualified after the sealing body is filled, and at the same time ensuring that the sealing body does not fall off in the installation groove, which is conducive to improving the sealing reliability of the sealing structure.

[0019] In addition, there are two waterproof grooves arranged at intervals along the width direction of the sealing body, which is conducive to forming a multi-layer waterproof fit from the inside to the outside, thereby improving the safety of the component; the waterproof groove is arranged in accordance with the shape of the sealing body, which is conducive to improving the molding and waterproof effect of the waterproof groove. The waterproof cavity is arranged on the side of the sealing body facing the inside of the two components, which is conducive to forming an inside-out fit with the waterproof groove, thereby further improving the sealing and waterproof effect. The setting of the relationship between the height H of the sealing body and the height h of the waterproof groove is conducive to ensuring the compression rate of the sealing structure, thereby improving the sealing effect. The setting of the ratio of the cross-sectional area S of the sealing body to the cross-sectional area s of the installation groove is conducive to ensuring that the width of the sealing structure in the sealed state is qualified and has good sealing performance. The sealing body is made of rubber, has a good sealing effect, and can prevent water vapor outside the component from entering the inside of the component to form condensation.

[0020] In addition, another object of the present invention is to provide a battery pack, comprising an upper shell and a lower shell that are snap-fitted together, and a sealing structure as described above is provided between the upper shell and the lower shell.

[0021] The battery pack described in the utility model is beneficial to improving the sealing of the battery pack shell by providing the above-mentioned sealing structure between the upper shell and the lower shell, thereby enhancing the sealing safety, structural safety and electrical safety of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the sealing structure described in the embodiment of the utility model in the application state;

[0024] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0025] Figure 3 for Figure 1 A magnified view of part B in FIG.

[0026] Figure 4 This is a structural schematic diagram of the sealing structure described in an embodiment of the utility model;

[0027] Figure 5 for Figure 4 The enlarged view of the C part in FIG.

[0028] Figure 6 It is a partial schematic diagram of the sealing structure described in the embodiment of the utility model;

[0029] Figure 7 for Figure 6 DD direction cross-sectional view;

[0030] Figure 8 for Figure 6 EE direction cross-sectional view.

[0031] Description of reference numerals:

[0032] 1. Sealing body; 100. Sealing structure; 101. Waterproof groove; 102. Sealing rib; 2. Component; 200. Waterproof cavity. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0036] This embodiment relates to a sealing structure 100, which is disposed between two components 2 to form a seal between the two components 2, and at least one of the components 2 is provided with a mounting groove. The sealing structure 100 of this embodiment aims to improve the sealing effect between the two components 2 by optimizing its own structure.

[0037] In terms of overall structure, the sealing structure 100 includes a sealing body 1 arranged in the installation groove, and an inwardly concave waterproof groove 101 is provided on the end surface of the sealing body 1. At least one side of the sealing body 1 is spaced from the inner wall of the installation groove, and a waterproof cavity 200 is formed between the two.

[0038] The sealing structure 100 of this embodiment can collect moisture and water entering the component 2 by forming a waterproof groove 101 on the end surface of the sealing body and forming a waterproof cavity 200 between at least one side of the sealing body 1 and the inner wall of the installation groove, which is beneficial to prevent moisture and water from entering the interior of the component 2, thereby improving the safety of the component 2. At the same time, the setting of the sealing structure 100 is also beneficial to reducing the occupation of the space inside the component 2, thereby improving the space utilization rate inside the component 2.

[0039] The two components 2 in this embodiment may be components that require sealing. For example, the components 2 in this embodiment may be the upper shell and the lower shell of the battery pack. The sealing structure 100 is disposed between the upper shell and the lower shell to achieve a sealing effect, thereby improving the sealing of the battery pack.

[0040] In terms of specific structure, the mounting groove in this embodiment can be provided on any component 2. Figures 1 to 3 As shown in , the installation groove is arranged along the circumference of the component 2, and the sealing body 1 is arranged along the installation groove to be installed in the installation groove to achieve the sealing between the two components 2. The sealing body 1 in the initial state extends out of the installation groove, and when the two components 2 are connected, the sealing body 1 is sandwiched between the two components 2, thereby achieving a better sealing effect. Of course, it is also feasible to arrange the installation groove only in a part of the circumference of the component 2, in which case it is only necessary to ensure that the sealing body 1 is installed in the installation groove.

[0041] As a preferred embodiment, Figures 5 to 8 As shown in FIG, there are two waterproof grooves 101 arranged at intervals along the width direction of the sealing body 1, and the two waterproof grooves 101 form a double-layer seal from the inside to the outside. Water vapor and water first enter the waterproof groove 101 arranged on the outside, and then enter the waterproof groove 101 arranged on the inside. The water is blocked and collected by the double-layer waterproof groove 101, which is conducive to reducing the flow of water vapor and water into the inside of the two components 2, thereby improving the sealing effect.

[0042] In addition, the waterproof groove 101 is arranged along the extension direction of the sealing body 1, and is arranged in the shape of the sealing body 1. Such an arrangement is conducive to improving the shaping and waterproof effect of the waterproof groove 101. It should be noted that the number of waterproof grooves 101 in this embodiment can also be adaptively increased or decreased according to usage requirements.

[0043] As a preferred embodiment, Figure 5 As shown in , in this embodiment, the waterproof cavity 200 is located on the side of the sealing body 1 facing the inside of the two components 2. This is conducive to the waterproof cavity 200 and the waterproof groove 101 to form an internal and external match, thereby further improving the sealing and waterproof effect. In addition, since the waterproof cavity 200 is located between the sealing body 1 and the side wall of the installation groove, the depth of the waterproof cavity 200 is deeper, so it has a higher water collection effect, which is conducive to preventing water from flowing into the inside of the component 2. At the same time, through the multi-layer cooperation of the waterproof cavity 200 and the waterproof groove 101, it is conducive to increasing the occupation of the space inside the component 2, improving the space occupation inside the component 2, and also helping to reduce the amount of the sealing structure 100, thereby helping to reduce the production cost.

[0044] Still refer to Figures 5 to 8 As shown in FIG. 1 , in this embodiment, the side wall of the sealing body 1 is provided with a plurality of sealing ribs 102 located in the waterproof cavity 200, and the waterproof cavity 200 is divided into a plurality of waterproof sub-cavities by the sealing ribs 102. In this embodiment, a plurality of sealing ribs 102 are provided, which is beneficial to further improve the sealing and waterproofing effect, and also beneficial to improve the reliability of the use of the sealing body 1.

[0045] Furthermore, the sealing ribs 102 are arranged in a plurality at intervals along the length direction of the waterproof groove 101. The plurality of sealing ribs 102 is conducive to further improving the sealing and waterproofing effect, and is also conducive to improving the reliability of the sealing body 1. In the initial state, the sealing ribs 102 are also extended out of the installation groove, which is conducive to improving the sealing performance of the sealing structure 100.

[0046] In specific implementation, a preset gap A is provided between the sealing rib 102 and the inner wall of the mounting groove on the same side, and A satisfies: 0.5mm≤A≤1mm. For example, the preset gap A may be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm. The setting of the preset gap range here is conducive to ensuring that the effective sealing width of the sealing body 1 is qualified after filling, and at the same time ensuring that the sealing body 1 does not fall off in the mounting groove, which is conducive to improving the sealing reliability of the sealing structure 100.

[0047] In addition, in this embodiment, the relationship between the height H of the sealing body 1 and the height h of the waterproof groove 101 is: B = (Hh) / H, and B satisfies: 10% ≤ B ≤ 35%. The setting of the relationship between the height H of the sealing body 1 and the height h of the waterproof groove 101 here is conducive to ensuring the compression rate of the sealing structure 100, thereby improving the sealing effect. In specific implementation, for example, B can be 10%, 15%, 20%, 25%, 30% or 35%, etc., which can be determined according to the use requirements.

[0048] As a preferred embodiment, the ratio C of the cross-sectional area S of the sealing body 1 to the cross-sectional area s of the installation groove satisfies: 80%≤C≤95%. The setting of the ratio of the cross-sectional area S of the sealing body 1 to the cross-sectional area s of the installation groove is conducive to ensuring that the width of the sealing structure 100 in the sealed state is qualified and has good sealing performance. In specific implementation, the ratio C can be 80%, 82%, 84%, 86%, 88%, 90%, 92% or 95%, etc.

[0049] The sealing body 1 in this embodiment is made of rubber. The sealing body 1 is made of rubber and has a good dense structure, which can prevent water vapor outside the component 2 from entering the component 2 to form condensation, which is beneficial to improving the sealing between the two components 2.

[0050] In addition, this embodiment also relates to a battery pack, including an upper shell and a lower shell that are connected by buckling, and a sealing structure 100 as described above is provided between the upper shell and the lower shell. In specific implementation, the two components are the upper shell and the lower shell, and the mounting groove can be provided on the edges of the upper shell or the lower shell.

[0051] The battery pack of this embodiment, by providing the sealing structure 100 as described above between the upper shell and the lower shell, is beneficial to improving the sealing of the battery pack shell and preventing water vapor and water from entering the interior of the battery pack, thereby improving the sealing safety, structural safety and electrical safety of the battery pack.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing structure, arranged between two components, for forming a seal between the two components, and at least one of the components is provided with a mounting groove, characterized in that: The sealing structure comprises a sealing body arranged in the installation groove, an end surface of the sealing body is provided with an inwardly concave waterproof groove, at least one side of the sealing body is spaced apart from the inner wall of the installation groove, and a waterproof cavity is formed between the two.

2. The sealing structure according to claim 1, characterized in that: The side wall of the sealing body is provided with a plurality of sealing ribs located in the waterproof cavity, and the waterproof cavity is divided into a plurality of waterproof sub-cavities by the sealing ribs.

3. The sealing structure according to claim 2, characterized in that: The sealing ribs are multiple and are arranged at intervals along the length direction of the waterproof groove.

4. The sealing structure according to claim 2, characterized in that: A preset gap A is provided between the sealing rib and the inner wall of the mounting groove on the same side, and A satisfies: 0.5mm≤A≤1mm.

5. The sealing structure according to claim 2, characterized in that: The number of the waterproof grooves is two and they are arranged at intervals along the width direction of the sealing body; and / or, The waterproof groove is arranged along the extension direction of the sealing body and follows the shape of the sealing body.

6. The sealing structure according to claim 1, characterized in that: The waterproof cavity is located on one side of the sealing body facing the interior of the two components.

7. The sealing structure according to claim 1, characterized in that: The relationship between the height H of the sealing body and the height h of the waterproof groove is: B=(Hh) / H, and B satisfies: 10%≤B≤35%.

8. The sealing structure according to claim 1, characterized in that: The ratio C of the cross-sectional area S of the sealing body to the cross-sectional area s of the mounting groove satisfies: 80％≤C≤95％。 9. The sealing structure according to any one of claims 1 to 8, characterized in that: The sealing body is made of rubber.

10. A battery pack, comprising an upper shell and a lower shell that are snap-fitted together, characterized in that: The sealing structure according to any one of claims 1 to 9 is provided between the upper shell and the lower shell.

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