Foaming silica gel sealing ring for sealing power battery

Abstract

The utility model relates to the technical field of power batteries, solves the technical problems that a mounting notch on an existing foaming silica gel sealing ring for sealing the power batteries is poor in sealing effect and easy to leak water, and particularly relates to a foaming silica gel sealing ring for sealing the power batteries, which comprises a battery shell, and an upper cover is arranged above the battery shell. A sealing ring gasket is arranged between the upper cover and the battery shell, a positioning structure is arranged between the sealing ring gasket and the battery shell, the upper cover and the battery shell are fixedly installed through a plurality of screws, notches are formed in the sealing ring gasket and the upper cover, and waterproof structures are arranged between the screws and the upper cover. The waterproof structure comprises a groove formed in the notch in the upper cover, an internal thread sleeve is fixed in the groove, the screw rod is movably sleeved with an external thread ring, and an extrusion ring is arranged below the external thread ring. The outer threaded ring is rotated to enable the extrusion ring to be tightly attached to the waterproof platform, so that the possibility of water seepage at the notch is avoided, and the waterproof effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a foamed silicone sealing ring for sealing a power battery. Background Art

[0002] The power battery is the power source for the tool, mostly referring to the storage battery that provides power for electric vehicles, electric trains, electric bicycles, and golf carts. The battery pack is usually installed in a shell, and an upper cover is installed on the shell. In order to prevent water from entering the shell and damaging the battery, a foam silicone sealing ring is set on the shell, and then the upper cover is fixed to the shell.

[0003] The existing power battery sealing foam silicone seal ring is generally installed by making an integral foam silicone seal ring according to the width of the upper end surface of the shell, and then providing a plurality of slots for the bolts to pass through on the seal ring. When installing the upper cover, the bolts are passed through the slots on the upper cover and the seal ring, and then threadedly installed with the battery shell. Although the seal ring can achieve a sealing effect, the slots are not waterproof and water will inevitably seep through, causing damage to the battery. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a foam silicone sealing ring for sealing a power battery, which solves the technical problems of poor sealing effect and easy water seepage on the installation grooves of the existing foam silicone sealing rings for sealing a power battery, and achieves the purpose of enhancing the sealing effect by rotating the external thread ring after the installation is completed so that the extrusion ring fits tightly on the waterproof platform.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: a foamed silicone sealing ring for sealing a power battery, comprising a battery shell, an upper cover is provided above the battery shell, a sealing ring gasket is provided between the upper cover and the battery shell, a positioning structure for facilitating installation is provided between the sealing ring gasket and the battery shell, the upper cover and the battery shell are fixedly installed by a plurality of screws, a plurality of threaded grooves matching the screws are provided on the battery shell, a plurality of notches for use with the screws are provided on the sealing ring gasket and the upper cover, and a waterproof structure is provided between the screw and the upper cover.

[0006] The waterproof structure includes a groove opened in the notch on the upper cover, an internal thread sleeve is fixed in the groove, an external thread ring matching the internal thread sleeve is movably mounted on the screw, and an extrusion ring movably mounted on the screw is provided below the external thread ring.

[0007] Furthermore, two waterproof platforms in the form of cones are fixed in the middle of the screw rod, and a cone-shaped groove matching the waterproof platform is provided in the notch on the upper cover.

[0008] Furthermore, the extrusion ring is installed between the waterproof platform and the external thread ring, and a conical notch adapted to the waterproof platform is provided at the lower end of the extrusion ring.

[0009] Furthermore, the internal thread sleeve, the external thread ring and the extrusion ring are all made of rubber material.

[0010] Furthermore, the positioning structure includes two positioning blocks fixed on the lower end surface of the sealing ring gasket, two cavities are provided on both sides of the battery housing at positions corresponding to the positioning blocks, and the upper end surfaces of the cavities are provided with positioning grooves used in conjunction with the positioning blocks.

[0011] Furthermore, a positioning rod is fixed in the cavity, and a socket matched with the positioning rod is provided on the positioning block.

[0012] By means of the above technical solution, the utility model provides a foamed silicone sealing ring for sealing a power battery, which has at least the following beneficial effects:

[0013] 1. Due to the setting of the waterproof structure, the utility model fixes the upper cover on the battery shell by a screw, and the external thread ring is rotated to move downward, and the extrusion ring can move downward and fit tightly with the waterproof platform, thereby preventing water from penetrating into the battery shell from the notch on the upper cover, increasing the sealing between the upper cover and the battery shell, and increasing the service life of the battery pack.

[0014] 2. Due to the setting of the positioning structure of the utility model, by installing the two positioning blocks correspondingly in the positioning grooves and moving the positioning blocks downward, the positioning column in the cavity can be inserted into the slot at the lower end of the positioning block to prevent the sealing ring gasket from shifting, and it is convenient to align the threaded groove on the battery shell with the sealing ring gasket and the notch on the upper cover, which is convenient for positioning and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0016] In the attached picture:

[0017] Figure 1 It is an overall schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the positioning structure in the utility model;

[0019] Figure 3 This is a bottom view schematic diagram of the positioning block in the utility model;

[0020] Figure 4 This is a schematic diagram of the extrusion ring in the utility model extruding the waterproof platform;

[0021] Figure 5 This is a schematic diagram of the waterproof structure of the utility model when it is not installed;

[0022] Figure 6 It is a schematic diagram of the connection between the extrusion ring and the screw in the utility model.

[0023] In the figure: 1. battery casing; 2. upper cover; 3. sealing ring gasket; 4. positioning structure; 401. positioning block; 402. positioning groove; 403. positioning rod; 404. jack; 5. screw; 6. waterproof structure; 601. internal thread sleeve; 602. external thread ring; 603. extrusion ring; 604. waterproof platform. DETAILED DESCRIPTION

[0024] 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.

[0025] Reference Figure 1-Figure 6 This is an embodiment of the utility model: a foamed silicone sealing ring for sealing a power battery, comprising a battery shell 1, an upper cover 2 is provided above the battery shell 1, a sealing ring gasket 3 is provided between the upper cover 2 and the battery shell 1, a positioning structure 4 for easy installation is provided between the sealing ring gasket 3 and the battery shell 1, the upper cover 2 and the battery shell 1 are fixedly installed by multiple screws 5, the battery shell 1 is provided with multiple threaded grooves compatible with the screws 5, the sealing ring gasket 3 and the upper cover 2 are provided with multiple notches for use with the screws 5, and a waterproof structure 6 is provided between the screws 5 and the upper cover 2.

[0026] Reference Figure 4-Figure 6As shown, the waterproof structure 6 includes a groove opened in the notch on the upper cover 2, an internal threaded sleeve 601 is fixed in the groove, an external threaded ring 602 matched with the internal threaded sleeve 601 is movably sleeved on the screw 5, an extrusion ring 603 movably sleeved on the screw 5 is provided below the external threaded ring 602, two waterproof platforms 604 in the form of conical platforms are fixed in the middle of the screw 5, a conical groove matched with the waterproof platform 604 is opened in the notch on the upper cover 2, the extrusion ring 603 is installed between the waterproof platform 604 and the external threaded ring 602, and a conical notch matched with the waterproof platform 604 is opened at the lower end of the extrusion ring 603, and the internal threaded sleeve 601, the external threaded ring 602 and the extrusion ring 603 are all made of rubber material. When installing the upper cover 2, the screw 5 is passed through the notches on the upper cover 2 and the sealing ring gasket 3, and the screw 5 is rotated to rotate the screw 5 into the threaded groove on the battery shell 1. In order to prevent water from penetrating into the notch, after the upper cover 2 is fixed, the external thread ring 602 on the screw 5 is rotated, so that the external thread ring 602 moves downward, thereby moving the extrusion ring 603 downward and fitting tightly with the waterproof platform 604 on the screw 5, thereby avoiding water seepage from the notch, strengthening the sealing effect between the battery shell 1 and the upper cover 2, and improving the service life of the battery pack.

[0027] In this embodiment, refer to Figure 1-Figure 3 As shown, the positioning structure 4 includes two positioning blocks 401 fixed on the lower end surface of the sealing ring gasket 3, two cavities are provided on both sides of the battery housing 1 at positions corresponding to the positioning blocks 401, and the upper end surfaces of the cavities are provided with positioning grooves 402 used in conjunction with the positioning blocks 401, a positioning rod 403 is fixed in the cavity, and a socket 404 adapted to the positioning rod 403 is provided on the positioning block 401. When installing the upper cover 2, the sealing ring gasket 3 is placed on the battery shell 1, and the two positioning blocks 401 at the lower end of the sealing ring gasket 3 are aligned with the positioning grooves 402 on the battery shell 1, and then the positioning block 401 is installed into the cavity. After the positioning block 401 is installed into the cavity, the slot at the lower end of the positioning block 401 is just above the positioning rod 403 in the cavity, and then the positioning block 401 is moved downward into the cavity, and the positioning rod 403 can be inserted into the slot, thereby limiting the sealing ring gasket 3 to prevent it from shifting when the upper cover 2 covers the battery shell 1, so as to facilitate the alignment of the threaded groove on the battery shell 1 with the sealing ring gasket 3 and the notch on the upper cover 2, so as to facilitate positioning and installation.

[0028] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foamed silicone seal ring for sealing a power battery, comprising a battery housing (1), characterized in that: An upper cover (2) is provided above the battery housing (1); a sealing ring gasket (3) is provided between the upper cover (2) and the battery housing (1); a positioning structure (4) for facilitating installation is provided between the sealing ring gasket (3) and the battery housing (1); the upper cover (2) and the battery housing (1) are fixedly installed by a plurality of screws (5); a plurality of threaded grooves matching the screws (5) are provided on the battery housing (1); a plurality of notches matching the screws (5) are provided on the sealing ring gasket (3) and the upper cover (2); and a waterproof structure (6) is provided between the screws (5) and the upper cover (2); The waterproof structure (6) comprises a groove formed in a notch on the upper cover (2), an internal thread sleeve (601) being fixed in the groove, an external thread ring (602) being movably mounted on the screw rod (5) and matching the internal thread sleeve (601), and an extrusion ring (603) being movably mounted on the screw rod (5) is provided below the external thread ring (602).

2. The foamed silicone seal ring for sealing a power battery according to claim 1, characterized in that: Two waterproof platforms (604) in the form of cones are fixed in the middle of the screw rod (5), and a conical groove matching the waterproof platform (604) is provided in the notch on the upper cover (2).

3. The foamed silicone seal ring for sealing a power battery according to claim 2, characterized in that: The extrusion ring (603) is installed between the waterproof platform (604) and the external thread ring (602), and a conical notch matching the waterproof platform (604) is provided at the lower end of the extrusion ring (603).

4. The foamed silicone seal ring for sealing a power battery according to claim 1, characterized in that: The internal thread sleeve (601), the external thread ring (602) and the extrusion ring (603) are all made of rubber material.

5. The foamed silicone seal ring for sealing a power battery according to claim 1, characterized in that: The positioning structure (4) comprises two positioning blocks (401) fixed on the lower end surface of the sealing ring gasket (3), two cavities are provided on both sides of the battery housing (1) at positions corresponding to the positioning blocks (401), and the upper end surfaces of the cavities are provided with positioning grooves (402) for use with the positioning blocks (401).

6. The foamed silicone seal ring for sealing a power battery according to claim 5, characterized in that: A positioning rod (403) is fixed in the cavity, and a plug hole (404) adapted to the positioning rod (403) is provided on the positioning block (401).

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