A battery pack sealing gasket

Abstract

This utility model discloses a battery pack sealing gasket, belonging to the field of sealing gasket technology. It includes a sealing gasket comprising an upper gasket and a lower gasket, which are detachably connected. The upper and lower gaskets have several through holes. The upper gasket has a groove on the side away from the lower gasket, and the lower gasket also has a groove on the side away from the upper gasket. When disassembly is required, applying pressure will separate the upper and lower gaskets. Applying pressure will also break the cured sealant layer inside the through holes, allowing the housing to be opened without damaging the housing structure. Advantages include: detachability: the split gasket design solves the problem of having to damage the housing for disassembly in integrated sealing technology; sealing reliability: the liquid sealant is evenly filled and forms a seamless seal after curing, avoiding the risk of leakage at the joints of traditional gaskets; and high installation accuracy: the positioning hole and bayonet design ensure accurate gasket alignment, suitable for automated assembly.

Description

Technical Field

[0001] This utility model belongs to the field of sealing gasket technology, specifically relating to a battery pack sealing gasket. Background Technology

[0002] The sealing performance of power batteries is crucial to their safety and reliability. Currently, power battery packs must meet IPX7 or even IPX8 protection levels in immersion tests.

[0003] Traditional battery packs typically consist of a top cover, a sealing gasket, a lower housing, and fastening bolts. The sealing gasket is positioned between the top cover and the lower housing, and the fastening bolts pass through the top cover and lower housing to achieve a tight seal, ensuring the airtightness of the connection between the top cover and the lower housing. However, this seal cannot meet the protection level requirements of IPX7 or even IPX8. Therefore, integrated seals have emerged. Integrated seals directly apply liquid sealant (such as silicone) precisely into the sealing groove of the lower housing using robotic dispensing technology, and then heat-cur it. This method eliminates the corner joint problem of traditional sealing gaskets, achieving a seamless seal and higher reliability; however, disassembly requires damaging the housing. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack sealing gasket to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a sealing gasket comprising an upper gasket and a lower gasket, the upper and lower gaskets being detachably connected, the upper and lower gaskets having a plurality of through holes, the upper gasket having a groove on the side away from the lower gasket, and the lower gasket also having a groove on the side away from the upper gasket.

[0005] It should be noted in the solution that the sealing gasket is provided with several positioning holes and bayonet openings.

[0006] It should be noted in the solution that the upper pad has a protrusion on the side facing the lower pad, and the lower pad has a groove on the side facing the upper pad that matches the protrusion.

[0007] It should be noted in the solution that the side of the lower pad facing the upper pad has a protrusion, and the side of the upper pad facing the lower pad has a groove that matches the protrusion.

[0008] Compared with the prior art, the battery pack sealing gasket provided by this utility model has at least the following beneficial effects:

[0009] (1) When disassembly is required, applying pressure will separate the upper and lower gaskets. Applying pressure will also break the cured sealant layer inside the through hole, allowing the enclosure to be opened without damaging the enclosure structure. Advantages include: disassembly capability: the split gasket design solves the problem of having to damage the enclosure for disassembly in integrated sealing technology; sealing reliability: the liquid sealant is evenly filled and forms a seamless seal after curing, avoiding the risk of leakage at the joints of traditional gaskets; and high installation accuracy: the positioning hole and bayonet design ensure accurate gasket alignment, making it suitable for automated assembly.

[0010] (2) The bayonet is used to temporarily fix the gasket to prevent displacement during the injection of sealant or the closing of the cover. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the product of this utility model;

[0012] Figure 2 This is a cross-sectional structural diagram of the product of this utility model.

[0013] In the diagram: 1. Sealing gasket; 2. Positioning hole; 3. Bayonet; 4. Upper gasket; 5. Lower gasket; 6. Liquid sealant. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 A battery pack sealing gasket includes a sealing gasket 1, wherein the sealing gasket 1 includes an upper gasket 4 and a lower gasket 5, the upper gasket 4 and the lower gasket 5 are detachably connected, the upper gasket 4 and the lower gasket 5 are provided with a plurality of through holes, the upper gasket 4 is provided with a groove on the side away from the lower gasket 5, and the lower gasket 5 is also provided with a groove on the side away from the upper gasket 4.

[0016] With the setting of gasket 1, the through hole penetrates the upper gasket 4 and the lower gasket 5 for injecting liquid sealant. The grooves are located on the top surface of the upper gasket 4 and the bottom surface of the lower gasket 5, respectively, and their shapes match the sealing groove. After the sealant is injected, the sealant fills the through hole and the groove, and forms a seamless sealing layer after heating and curing. Assembly and use steps: Install gasket: Place the lower gasket 5 in the sealing groove of the lower battery pack housing and fix it initially through the positioning hole 2 and the bayonet 3. Inject sealant 6: Use a robotic dispensing device to accurately inject liquid sealant 6 into the groove and through hole, and apply pressure to ensure fit. Disassembly process: When disassembly is required, applying pressure will cause the upper gasket 4 and the lower gasket 5 to separate. Applying pressure will destroy the cured sealant layer in the through hole, and the housing can be opened without damaging the housing structure. Advantages include: disassembly: the split gasket design solves the problem that disassembly requires damaging the housing in integrated sealing technology; sealing reliability: the liquid sealant 6 is evenly filled and forms a seamless seal after curing, avoiding the risk of leakage at the joints of traditional gaskets; and high installation accuracy: the positioning hole and bayonet design ensure accurate gasket alignment, making it suitable for automated assembly.

[0017] Furthermore, referring to Figure 1-2 As shown, it is worth noting that the sealing gasket 1 is provided with several positioning holes 2 and bayonet 3;

[0018] The positioning and fixing structure sealing gasket 1 is provided with multiple positioning holes 2 and bayonets 3 through the setting of positioning holes 2 and bayonets 3. The positioning holes 2 are used to cooperate with the positioning pins on the battery pack box to ensure the accurate installation position of the gasket, and the bayonets 3 are used to temporarily fix the gasket to prevent displacement during the injection of sealant or the closing of the cover.

[0019] Furthermore, referring to Figure 1-2 As shown, it is worth noting that the upper pad 4 has a protrusion on the side facing the lower pad 5, and the lower pad 5 has a groove on the side facing the upper pad 4 that matches the protrusion.

[0020] With the annular filter box, the upper gasket 4 and the lower gasket 5 are detachably connected through the engagement of a protrusion and a groove. Specifically, the upper gasket 4 has a protrusion on the side facing the lower gasket 5, and the lower gasket 5 has a corresponding groove that matches the protrusion. Alternatively, the lower gasket 5 can also have a protrusion, and the upper gasket 4 can have a corresponding groove, forming a bidirectional interlocking structure to enhance the stability and alignment accuracy of the connection.

[0021] The present invention provides a battery pack sealing gasket. Specific preferred embodiments have been used to illustrate the principles and implementation methods of the present invention. These embodiments are merely for the purpose of helping to understand the principles and core ideas of the present invention. It should be noted that, for those skilled in the art, the implementation schemes in the above embodiments can be further combined or replaced without departing from the design concept of the present invention, and several improvements and modifications can be made to the present invention. These improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A battery pack gasket, characterized by: The gasket includes a sealing gasket (1), which includes an upper gasket (4) and a lower gasket (5). The upper gasket (4) and the lower gasket (5) are detachably connected. The upper gasket (4) and the lower gasket (5) are provided with a plurality of through holes. The side of the upper gasket (4) away from the lower gasket (5) is provided with a groove, and the side of the lower gasket (5) away from the upper gasket (4) is also provided with a groove.

2. The battery pack gasket of claim 1, wherein: The sealing gasket (1) is provided with several positioning holes (2) and bayonet (3).

3. The battery pack gasket of claim 2, wherein: The upper pad (4) has a protrusion on the side facing the lower pad (5), and the lower pad (5) has a groove on the side facing the upper pad (4) that matches the protrusion.

4. The battery pack gasket of claim 3, wherein: The lower pad (5) has a protrusion on the side facing the upper pad (4), and the upper pad (4) has a groove on the side facing the lower pad (5) that matches the protrusion.

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