Middle suspension loop sealing structure

Abstract

The utility model provides a middle hanging lug sealing structure, and belongs to the field of new energy batteries. The structure is arranged between a middle hanging lug and a matching surface of a battery pack, the battery pack comprises a box cover, a cross beam, a liquid cooling plate and a bottom protection plate, the middle hanging lug comprises an upper sleeve, a lower sleeve, a nut and a nut, the box cover, the cross beam, the liquid cooling plate and the bottom protection plate are horizontally arranged in sequence from top to bottom, and the upper sleeve is arranged between the box cover and the cross beam; the nut is arranged on the box cover and is in threaded connection with the inner wall of the upper end of the upper sleeve, a first foam sealing ring is arranged between the upper sleeve and the bottom of the box cover, an annular wing plate is fixedly arranged at the lower end of the lower sleeve and clamped between the liquid cooling plate and the bottom protection plate, and a second foam sealing ring is arranged between the annular wing plate and the bottom protection plate. And a third foam sealing ring is arranged between the annular wing plate and the liquid cooling plate. By adopting the middle hanging lug sealing structure provided by the embodiment of the utility model, the problem of poor sealing effect in the prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of new energy batteries, and in particular to a center-mounted ear sealing structure. Background Technology

[0002] After the new energy battery is manufactured, a center mount structure is required for installation and fixation to the vehicle frame. The center mount structure typically involves creating a longitudinal through hole in the battery pack, inserting a sleeve into the hole, and then passing bolts through the sleeve and mounting holes on the vehicle frame for secure installation. Because of the longitudinal through hole in the battery pack, the airtightness of the battery pack may be compromised during sleeve-to-hole assembly; therefore, a sealing structure is necessary for the center mount structure.

[0003] In existing technologies, the center-mounted ear sealing structure usually only uses a single layer of foam for sealing. Foam is placed between the center-mounted ear and the top cover of the battery pack or between the center-mounted ear and the bottom protective plate of the battery pack for sealing. This sealing method is too simple. When the cover or bottom protective plate is slightly deformed, external air can easily enter the battery pack from the mating point, thereby reducing the airtightness of the battery pack.

[0004] The existing center-hook sealing structure is relatively simple because it only has a single layer of foam on the mating surface, resulting in poor sealing performance. Utility Model Content

[0005] This utility model embodiment provides a center-hook sealing structure that can solve the problem of low sealing effect in the prior art. The technical solution is as follows:

[0006] A center mounting lug sealing structure is disposed between the center mounting lug and the mating surface of the battery pack. The battery pack includes a cover, a crossbeam, a liquid cooling plate, and a bottom protective plate. The center mounting lug includes an upper sleeve, a lower sleeve, a nut, and a bolt.

[0007] The box cover, crossbeam, liquid cooling plate, and bottom protective plate are arranged horizontally from top to bottom. The upper sleeve is disposed between the box cover and the crossbeam. The nut is disposed on the box cover and threadedly connected to the upper inner wall of the upper sleeve. A first foam sealing ring is disposed between the upper sleeve and the bottom of the box cover. The upper outer wall of the lower sleeve is threadedly connected to the lower inner wall of the upper sleeve. An annular wing plate is fixedly disposed at the lower end of the lower sleeve. The annular wing plate is clamped between the liquid cooling plate and the bottom protective plate. The nut is disposed on the bottom of the bottom protective plate and threadedly connected to the lower outer wall of the lower sleeve. A second foam sealing ring is disposed between the annular wing plate and the bottom protective plate. A third foam sealing ring is disposed between the annular wing plate and the liquid cooling plate.

[0008] Optionally, the bottom of the annular wing plate is provided with a first annular groove, the second foam sealing ring is disposed in the first annular groove, the bottom of the annular wing plate is provided with a second annular groove, and the third foam sealing ring is disposed in the second annular groove.

[0009] Optionally, an annular sealing ring is fitted onto the upper outer wall of the lower sleeve.

[0010] Optionally, the annular sealing ring is provided in two layers, and the two layers of annular sealing rings are arranged in parallel and spaced apart.

[0011] Optionally, a first sealing structural adhesive is provided between the lower end of the upper sleeve and the upper end of the crossbeam.

[0012] Optionally, a second sealing structural adhesive is provided between the annular wing plate and the bottom protective plate.

[0013] Optionally, a third sealing structural adhesive is provided between the annular wing plate and the liquid cooling plate.

[0014] Optionally, the outer wall of the lower sleeve is provided with an anti-rotation plane, which matches the lower end of the crossbeam.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0016] This utility model provides a center-mounted lug sealing structure. It uses an upper sleeve and a lower sleeve for easy assembly. A first foam sealing ring is placed between the upper sleeve and the battery cover to isolate air from the top of the battery pack. An annular wing plate is provided at the lower end of the lower sleeve, clamping and fixing it between the liquid cooling plate and the bottom protective plate. This forces external air to pass through the mating surfaces between the annular wing plate and the bottom protective plate, and then between the annular wing plate and the liquid cooling plate, before reaching the battery. Because a second and third foam sealing ring are included, air entering the battery pack must pass through multiple sealing structures, increasing the difficulty of air entering the battery pack and improving the sealing performance between the center-mounted lug and the battery pack. This effectively solves the problem of poor sealing performance in existing technologies. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the middle hanging ear structure provided in this embodiment of the utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the mating of the center hook and the battery pack provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower end of the middle hanging ear provided in this embodiment of the utility model.

[0021] In the diagram: 1-Middle mounting lug; 11-Upper sleeve; 12-Lower sleeve; 121-Anti-rotation plane; 13-Nut; 14-Nut; 2-Battery pack; 21-Cover; 22-Crossbeam; 23-Liquid cooling plate; 24-Bottom guard plate; 31-First foam sealing ring; 32-Second foam sealing ring; 33-Third foam sealing ring; 4-Annular wing plate; 41-First annular groove; 42-Second annular groove; 51-First sealing structural adhesive; 52-Second sealing structural adhesive; 53-Third sealing structural adhesive; 6-Annular sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the middle hanging ear structure provided in this embodiment of the utility model; Figure 2 This is a schematic cross-sectional view of the mating of the center hook and the battery pack provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the lower end of the central lug provided in an embodiment of this utility model. Figures 1 to 3 The diagram shows a center-mounted lug sealing structure, positioned between the center-mounted lug 1 and the mating surface of the battery pack 2. The battery pack 2 includes a cover 21, a crossbeam 22, a liquid cooling plate 23, and a bottom protective plate 24. The center-mounted lug 1 includes an upper sleeve 11, a lower sleeve 12, a nut 13, and a nut 14. The cover 21, crossbeam 22, liquid cooling plate 23, and bottom protective plate 24 are arranged horizontally from top to bottom. The upper sleeve 11 is positioned between the cover 21 and the crossbeam 22. The nut 13 is positioned on the cover 21 and threadedly connected to the upper inner wall of the upper sleeve 11. The upper sleeve 11 and... A first foam sealing ring 31 is provided between the bottom of the cover 21. The upper outer wall of the lower sleeve 12 is threadedly connected to the lower inner wall of the upper sleeve 11. An annular wing plate 4 is fixedly provided at the lower end of the lower sleeve 12. The annular wing plate 4 is clamped between the liquid cooling plate 23 and the bottom protective plate 24. The nut 14 is placed on the bottom of the bottom protective plate 24 and threadedly connected to the lower outer wall of the lower sleeve 12. A second foam sealing ring 32 is provided between the annular wing plate 4 and the bottom protective plate 24. A third foam sealing ring 33 is provided between the annular wing plate 4 and the liquid cooling plate 23.

[0024] For example, in this embodiment of the present invention, the space between the cover 21 and the bottom protective plate 24 is the space inside the battery pack 2. The nut 13, upper sleeve 11, lower sleeve 12 and nut 14 are arranged from top to bottom, and the nut 13 presses the top of the cover 21. The crossbeam 22 is an I-shaped structure or a groove-shaped structure. The top plane of the crossbeam 22 provides bottom support for the upper sleeve 11. The lower sleeve 12 is arranged longitudinally through the crossbeam 22. The top of the lower sleeve 12 is threaded with the upper sleeve 11, so that the upper sleeve 11 and the lower sleeve 12 form a whole. The sleeve is divided into the form of the upper sleeve 11 and the lower sleeve 12, which can facilitate its installation. The annular wing plate 4 of the lower sleeve 12 presses and limits the liquid cooling plate 23. The bottom protective plate 24 presses and limits the annular wing plate 4. Finally, the nut 14 presses and limits the bottom protective plate 24, so that the middle hanging ear 1 is stably fixed on the battery pack 2. The annular wing plate 4 is clamped and fixed between the liquid cooling plate 23 and the bottom protective plate 24. This not only secures the lower sleeve 12 but also increases the number of mating surfaces between the lower sleeve 12 and the battery pack 2 from one to two. This allows for the installation of a third foam sealing ring 33 and a second foam sealing ring 32 on the upper and lower surfaces of the annular wing plate 4, respectively. The first foam sealing ring 32 prevents air from entering the battery pack 2 through the mating surface between the upper sleeve 11 and the cover 21. The second foam sealing ring 32 prevents air from entering the battery pack 2 through the mating area between the bottom protective plate 24 and the lower surface of the annular wing plate 4. The third foam sealing ring 33 further prevents air from entering the battery pack 2 through the mating area between the liquid cooling plate 23 and the upper surface of the annular wing plate 4. By using multiple layers of foam sealing rings, the third foam sealing ring 33 can also provide a seal even if the second foam sealing ring 32 fails, thus improving the overall sealing performance of the structure.

[0025] This utility model provides a center-hook sealing structure, which is easily assembled by using an upper sleeve 11 and a lower sleeve 12 for installation. A first foam sealing ring 31 is provided between the upper sleeve 11 and the cover 21 to isolate air from the top outside the battery pack 2. An annular wing plate 4 is provided at the lower end of the lower sleeve 12, which is clamped and fixed between the liquid cooling plate 23 and the bottom protective plate 4. This means that external air must pass through the mating surface between the annular wing plate 4 and the bottom protective plate 24, and then through the mating surface between the annular wing plate 4 and the liquid cooling plate 23 before it can reach the inside of the battery. Because a second foam sealing ring 32 and a third foam sealing ring 33 are provided in this structure, air needs to pass through multiple sealing structures to enter the battery pack 2, thereby increasing the difficulty of air entering the battery pack and improving the sealing performance between the center-hook 1 and the battery pack 2. This can effectively solve the problem of poor sealing performance in the prior art.

[0026] Optionally, the bottom of the annular wing plate 4 is provided with a first annular groove 41, the second foam sealing ring 32 is disposed in the first annular groove 41, the bottom of the annular wing plate 4 is provided with a second annular groove 42, and the third foam sealing ring 33 is disposed in the second annular groove 42.

[0027] For example, in this embodiment of the present invention, by opening the first annular groove 41 and the second annular groove 42, after the second foam sealing ring 32 and the third foam sealing ring 33 are placed therein, the second foam sealing ring 32 and the third foam sealing ring 33 can be limited in the horizontal direction, preventing the second foam sealing ring 32 and the third foam sealing ring 33 from being displaced in the horizontal direction and generating gaps during operation, thereby further improving the sealing performance of the structure.

[0028] Optionally, an annular sealing ring 6 is fitted on the upper outer wall of the lower sleeve 12.

[0029] For example, in this embodiment of the present invention, in order to facilitate the assembly of the sleeve and the battery pack 2, it is configured as an upper sleeve 11 and a lower sleeve 12. This may result in air entering the battery pack from the mating point of the upper sleeve 11 and the lower sleeve 12 when the upper sleeve 11 and the lower sleeve 12 are assembled. By setting the annular sealing ring 6, the sealing between the upper sleeve 11 and the lower sleeve 12 can be increased, thereby further improving the sealing performance of this structure.

[0030] Optionally, the annular sealing ring 6 is provided with two layers, and the two layers of annular sealing ring 6 are arranged in parallel and spaced apart.

[0031] For example, in this embodiment of the present invention, by setting two layers of annular sealing rings 6, when one layer of annular sealing ring 6 fails, the other annular sealing ring 6 can still perform sealing work, thereby further improving the sealing performance of the structure.

[0032] Optionally, a first sealing structural adhesive 51 is provided between the lower end of the upper sleeve 11 and the upper end of the crossbeam 22.

[0033] For example, in this embodiment of the present invention, the first sealing structural adhesive 51 has a ring-shaped structure. When the upper sleeve 11 is placed on the top of the crossbeam 22, the first sealing structural adhesive 51 is first set on the top of the crossbeam 22. The first sealing structural adhesive 51 can not only fix the upper sleeve 11 and the crossbeam 22, but also, when air enters from the mating part of the upper sleeve 11 and the lower sleeve 12, by setting the first sealing structural adhesive 51, air can be further prevented from entering the battery from the top of the upper sleeve 11 and the crossbeam 22, thereby further improving the sealing performance of the structure.

[0034] Optionally, a second sealing structural adhesive 52 is provided between the annular wing plate 4 and the bottom protective plate 24.

[0035] For example, in this embodiment of the invention, an annular groove can be formed on the surface of the annular wing plate 4, and the second sealing structural adhesive 52 is disposed in the annular groove. By providing the second sealing structural adhesive 52, on the one hand, the structural strength between the annular wing plate 4 and the bottom protective plate 24 can be improved, and on the other hand, the sealing performance between the annular wing plate 4 and the bottom protective plate 24 can be enhanced. When the second foam sealing ring 32 or the third foam sealing ring 33 fails, the addition of the second sealing structural adhesive 52 can ensure that air at the bottom cannot enter the battery pack 2, thereby further improving the sealing performance of this structure.

[0036] Optionally, a third sealing structural adhesive 53 is provided between the annular wing plate 4 and the liquid cooling plate 23.

[0037] Exemplarily, in this embodiment of the invention, an annular groove can be formed on the surface of the annular wing plate 4, and the third sealing structural adhesive 53 is disposed in the annular groove. By providing the third sealing structural adhesive 53, on the one hand, the structural strength between the annular wing plate 4 and the liquid cooling plate 23 can be improved; on the other hand, the sealing performance between the annular wing plate 4 and the liquid cooling plate 23 can be enhanced. When the second foam sealing ring 32 or the third foam sealing ring 33 fails, the addition of the third sealing structural adhesive 53 can ensure that air at the bottom cannot enter the battery pack 2, thereby further improving the sealing performance of the structure. In this embodiment, by setting the second sealing structural adhesive 52, the third sealing structural adhesive 53, the second foam sealing ring 32, and the third foam sealing ring 33 to have different annular diameters, the failure of one seal will not affect the sealing performance of the entire battery pack 2, thereby further improving the sealing performance of the structure.

[0038] Optionally, the outer wall of the lower sleeve 12 is provided with an anti-rotation plane 121, which matches the lower end of the crossbeam 22.

[0039] For example, in this embodiment of the present invention, the outer wall of the lower sleeve 12 is a cylindrical structure, and a vertical cut is made on the cylindrical structure to form a vertical anti-rotation plane 121. A square groove matching the anti-rotation plane 121 is provided on the lower surface of the crossbeam 22. When installing the lower sleeve 12, the lower sleeve 12 is inserted from the bottom of the battery pack 2, so that the anti-rotation plane 121 is limited by the square groove. Then, when the upper sleeve 11 or nut 14 is threadedly assembled with the lower sleeve 12, the lower sleeve 12 can be prevented from rotating, thereby improving the assembly efficiency of this structure.

[0040] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A center-mounted lug sealing structure, disposed between a center-mounted lug (1) and a mating surface of a battery pack (2), wherein the battery pack (2) includes a cover (21), a crossbeam (22), a liquid cooling plate (23), and a bottom protective plate (24), characterized in that, The middle lug (1) includes: an upper sleeve (11), a lower sleeve (12), a nut (13), and a bolt (14). The box cover (21), crossbeam (22), liquid cooling plate (23), and bottom protective plate (24) are arranged horizontally from top to bottom. The upper sleeve (11) is located between the box cover (21) and the crossbeam (22). The nut (13) is located on the box cover (21) and is threaded to the upper inner wall of the upper sleeve (11). A first foam sealing ring (31) is provided between the upper sleeve (11) and the bottom of the box cover (21). The upper outer wall of the lower sleeve (12) is connected to the lower inner wall of the upper sleeve (11). The lower sleeve (12) is fixedly provided with an annular wing plate (4) at its lower end. The annular wing plate (4) is clamped between the liquid cooling plate (23) and the bottom protective plate (24). The nut (14) is covered on the bottom of the bottom protective plate (24) and is threadedly connected to the lower outer wall of the lower sleeve (12). A second foam sealing ring (32) is provided between the annular wing plate (4) and the bottom protective plate (24), and a third foam sealing ring (33) is provided between the annular wing plate (4) and the liquid cooling plate (23).

2. The middle-hook sealing structure according to claim 1, characterized in that, The bottom of the annular wing plate (4) is provided with a first annular groove (41), the second foam sealing ring (32) is disposed in the first annular groove (41), the bottom of the annular wing plate (4) is provided with a second annular groove (42), and the third foam sealing ring (33) is disposed in the second annular groove (42).

3. The middle-hook sealing structure according to claim 1, characterized in that, The upper outer wall of the lower sleeve (12) is fitted with an annular sealing ring (6).

4. The center-mounted lug sealing structure according to claim 3, characterized in that, The annular sealing ring (6) has two layers, and the two layers of the annular sealing ring (6) are arranged in parallel and spaced apart.

5. The middle-hook sealing structure according to claim 1, characterized in that, A first sealing structural adhesive (51) is provided between the lower end of the upper sleeve (11) and the upper end of the crossbeam (22).

6. The middle-hook sealing structure according to claim 1, characterized in that, A second sealing structural adhesive (52) is provided between the annular wing plate (4) and the bottom protective plate (24).

7. The middle-hook sealing structure according to claim 1, characterized in that, A third sealing structural adhesive (53) is provided between the annular wing plate (4) and the liquid cooling plate (23).

8. The middle-hook sealing structure according to claim 1, characterized in that, The outer wall of the lower sleeve (12) is provided with an anti-rotation plane (121), which matches the lower end of the crossbeam (22).

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