Battery pack sealing structure

Abstract

The utility model discloses a battery pack sealing structure. The battery pack sealing structure comprises an upper shell, a lower shell and a sealing strip arranged between the upper shell and the lower shell, the sealing ring comprises an upper shell and a lower shell, the upper shell and the lower shell are each provided with a groove used for containing a sealing strip, each sealing strip comprises an upper sealing face located in the groove of the upper shell and a lower sealing face located in the groove of the lower shell, and each of the upper sealing face and the lower sealing face comprises a plurality of contact faces. In addition, the upper shell and the lower shell are provided with the sealing grooves of the V-shaped structures, the sealing faces of the sealing rings are completely matched with the upper shell and the lower shell, and compared with a traditional sealing mode, the sealing performance is higher, the service life is longer, and mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack sealing structures, in particular to a battery pack sealing structure. Background Art

[0002] With the popularity of electric vehicles, the safety and reliability of battery packs have received widespread attention. As the power source of electric vehicles, battery packs need to withstand various complex working environments, such as high temperature, low temperature, vibration, etc. At the same time, they also need to ensure the sealing of the internal battery pack to prevent moisture and dust from entering the battery pack and affecting the performance and service life of the battery. Most of the existing battery pack sealing structures use flat rubber seals for sealing, but this sealing method is prone to aging, wear, deformation and other problems during long-term use, resulting in reduced sealing performance and even leakage, which seriously affects the safety and reliability of the battery pack. Utility Model Content

[0003] The purpose of the utility model is to provide a battery pack sealing structure to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A battery pack sealing structure comprises an upper shell, a lower shell and a sealing strip arranged between the upper shell and the lower shell;

[0006] The upper shell and the lower shell are both provided with grooves for accommodating a sealing strip, the sealing strip comprises an upper sealing surface located in the groove of the upper shell and a lower sealing surface located in the groove of the lower shell, and the upper sealing surface and the lower sealing surface both comprise a plurality of contact surfaces.

[0007] As a further solution of the utility model: an upper shell sealing plate is provided on the upper shell, a lower shell sealing plate is provided on the lower shell, and the upper shell sealing plate is in contact and sealed with the lower shell sealing plate.

[0008] As a further solution of the utility model: the upper shell sealing plate is provided with an upper shell sealing groove, the upper sealing surface is clamped in the upper shell sealing groove, the lower shell sealing plate is provided with a lower shell sealing groove, and the lower sealing surface is clamped in the lower shell sealing groove.

[0009] As a further solution of the utility model: the upper shell sealing groove and the lower shell sealing groove are both V-shaped groove structures.

[0010] As a further solution of the utility model: the sealing strip includes a sealing strip body, the upper sealing surface is located at the upper part of the sealing strip body, the lower sealing surface is located at the lower part of the sealing strip body, and the upper sealing surface and the lower sealing surface each include three contact surfaces.

[0011] As a further solution of the utility model: the thickness of the upper sealing surface is not less than the depth of the sealing groove of the upper shell body, and the thickness of the lower sealing surface is not less than the depth of the sealing groove of the lower shell body.

[0012] As a further solution of the utility model: the upper shell sealing plate is provided with an upper shell connecting hole, the lower shell sealing plate is provided with a lower shell connecting hole, the upper shell connecting hole and the lower shell connecting hole are provided with fasteners for fixing the upper shell and the lower shell, and the fasteners are fastening bolts.

[0013] As a further solution of the utility model: the sealing strip is made of a material that is resistant to high temperature, wear and chemical corrosion.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the sealing ring of the utility model has a polygonal structure, and a V-shaped sealing groove is provided on the upper and lower shells. The sealing surface of the sealing ring fits perfectly with the upper and lower shells. Compared with the traditional sealing method, the sealing performance is stronger, the service life is longer, and it is convenient to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the battery pack structure of this embodiment;

[0016] Figure 2 This is a partial enlarged schematic diagram of the upper housing of this embodiment;

[0017] Figure 3 This is a partial enlarged schematic diagram of the lower housing of this embodiment;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the sealing strip of this embodiment;

[0019] Figure 5 It is a partially enlarged schematic diagram of the installation state of the shell of this embodiment.

[0020] In the figure: 1-upper shell, 11-upper shell sealing plate, 12-upper shell sealing groove, 13-upper shell connecting hole, 2-lower shell, 21-lower shell sealing plate, 22-lower shell connecting hole, 23-lower shell sealing groove, 3-sealing strip, 31-sealing strip body, 32-upper sealing surface, 33-lower sealing surface, 4-fastener. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 In an embodiment of the utility model, a battery pack sealing structure includes an upper shell 1, a lower shell 2 and a sealing strip 3 arranged between the upper shell 1 and the lower shell 2.

[0023] The upper shell 1 and the lower shell 2 are both provided with grooves for accommodating the sealing strip 3. The upper shell 1 is provided with an upper shell sealing plate 11, and the lower shell 2 is provided with a lower shell sealing plate 21. The upper shell sealing plate 11 is in contact and sealed with the lower shell sealing plate 21. In the present embodiment, the upper shell sealing plate 11 and the lower shell sealing plate 21 are both planar structures, and the upper shell sealing plate 11 and the lower shell sealing plate 21 are arranged in parallel.

[0024] The upper shell sealing plate 11 is provided with an upper shell sealing groove 12, the lower shell sealing plate 21 is provided with a lower shell sealing groove 23, the sealing strip 3 includes a sealing strip body 31, an upper sealing surface 32 is located at the upper part of the sealing strip body 31, and a lower sealing surface 33 is located at the lower part of the sealing strip body 31. The upper sealing surface 32 is clamped in the upper shell sealing groove 12, and the sealing strip 3 includes an upper sealing surface 32 located in the upper shell sealing groove 12 and a lower sealing surface 33 located in the lower shell sealing groove 23. The upper sealing surface 32 and the lower sealing surface 33 each include a plurality of contact surfaces. The upper shell sealing plate 11 is provided with an upper shell connecting hole 13, and the lower shell sealing plate 21 is provided with a lower shell connecting hole 22. The upper shell connecting hole 13 and the lower shell connecting hole 22 are provided with There is a fastener 4 for fixing the upper shell 1 and the lower shell 2, and the fastener 4 is a fastening bolt. In the present embodiment, the upper shell sealing groove 12 and the lower shell sealing groove 23 are both V-groove structures, and the upper sealing surface 32 and the lower sealing surface 33 both include three contact surfaces, that is, the cross-section of the sealing strip 3 is a hexagonal structure, and the thickness of the upper sealing surface 32 is not less than the depth of the upper shell sealing groove 12, and the thickness of the lower sealing surface 33 is not less than the depth of the lower shell sealing groove 23. In use, the upper shell sealing plate 11 and the lower shell sealing plate 21 are pressed together by the fasteners, and at the same time, the sealing strip 3 is pressed and deformed and clamped in the cavity formed by the upper shell sealing groove 12 and the lower shell sealing groove 23 to form a sealing structure.

[0025] In addition, the sealing strip 3 is made of a material that is resistant to high temperature, wear and chemical corrosion, and in this embodiment, it is made of rubber or plastic.

[0026] When the utility model is in use, the sealing strip 3 is first placed between the upper shell sealing plate 11 and the lower shell sealing plate 21. During the placement process, the upper sealing surface 32 of the upper part of the sealing strip 3 is clamped in the upper shell sealing groove 12, and the lower sealing surface 33 of the lower part of the sealing strip 3 is clamped in the lower shell sealing groove 23. At this time, one side of the sealing strip 3 contacts the outside of the battery, and the other side of the sealing strip 3 contacts the inside of the battery pack. Then, the upper shell sealing plate 11 and the lower shell sealing plate 21 are fastened by fastening bolts. During the fastening process, the spacing between the upper shell sealing plate 11 and the lower shell sealing plate 21 is gradually reduced. In this process, the sealing strip 3 is continuously compressed until The upper shell sealing plate 11 is in full contact with the lower shell sealing plate 21. At this time, the sealing strip 3 is compressed and deformed, and is clamped in the cavity formed between the upper shell sealing groove 12 and the lower shell sealing groove 23. Since the sealing strip 3 is compressed and the sealing strip is a hexagonal structure, the two side edges of the compressed sealing strip 3 are clamped in the contact gap between the upper shell sealing plate 11 and the lower shell sealing plate 21. The compressed and deformed sealing strip 3 is elastic, and under the action of the elasticity, it tends to squeeze into the contact gap between the upper shell sealing plate 11 and the lower shell sealing plate 21, further increasing the sealing performance between the upper shell sealing plate 11 and the lower shell sealing plate 21.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A battery pack sealing structure, characterized in that: It comprises an upper shell (1), a lower shell (2), and a sealing strip (3) arranged between the upper shell (1) and the lower shell (2); The upper shell (1) and the lower shell (2) are both provided with grooves for accommodating a sealing strip (3); the sealing strip (3) comprises an upper sealing surface (32) located in the groove of the upper shell (1) and a lower sealing surface (33) located in the groove of the lower shell (2); the upper sealing surface (32) and the lower sealing surface (33) both comprise a plurality of contact surfaces.

2. A battery pack sealing structure according to claim 1, characterized in that: An upper shell sealing plate (11) is provided on the upper shell (1), and a lower shell sealing plate (21) is provided on the lower shell (2); the upper shell sealing plate (11) is in contact and sealed with the lower shell sealing plate (21).

3. A battery pack sealing structure according to claim 2, characterized in that: The upper shell sealing plate (11) is provided with an upper shell sealing groove (12), and the upper sealing surface (32) is snap-fitted into the upper shell sealing groove (12); the lower shell sealing plate (21) is provided with a lower shell sealing groove (23), and the lower sealing surface (33) is snap-fitted into the lower shell sealing groove (23).

4. A battery pack sealing structure according to claim 3, characterized in that: The upper shell sealing groove (12) and the lower shell sealing groove (23) are both V-shaped groove structures.

5. A battery pack sealing structure according to claim 3, characterized in that: The sealing strip (3) comprises a sealing strip body (31), the upper sealing surface (32) is located at the upper part of the sealing strip body (31), the lower sealing surface (33) is located at the lower part of the sealing strip body (31), and the upper sealing surface (32) and the lower sealing surface (33) each comprise three contact surfaces.

6. A battery pack sealing structure according to claim 5, characterized in that: The thickness of the upper sealing surface (32) is not less than the depth of the upper shell sealing groove (12), and the thickness of the lower sealing surface (33) is not less than the depth of the lower shell sealing groove (23).

7. A battery pack sealing structure according to claim 2, characterized in that: The upper shell sealing plate (11) is provided with an upper shell connecting hole (13), and the lower shell sealing plate (21) is provided with a lower shell connecting hole (22). The upper shell connecting hole (13) and the lower shell connecting hole (22) are provided with fasteners (4) for fixing the upper shell (1) and the lower shell (2), and the fasteners (4) are fastening bolts.

8. The battery pack sealing structure according to claim 1, characterized in that: The sealing strip (3) is made of a material that is resistant to high temperatures, wear and chemical corrosion.

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