Battery pack sealing structure

Abstract

The utility model provides a battery pack sealing structure, and belongs to the field of new energy batteries. The structure comprises a box body, a box cover and a first sealing ring, the box body is of a cuboid structure with an upward opening, the top of the box body is horizontally provided with a first horizontal mounting plate facing the interior of the box body, the first horizontal mounting plate is annularly arranged along the opening of the box body, and the box cover is provided with a second horizontal mounting plate matched with the first horizontal mounting plate; and the first sealing ring is annularly and horizontally arranged along the opening of the box body and is arranged between the first horizontal mounting plate and the second horizontal mounting plate. By adopting the battery pack sealing structure provided by the embodiment of the utility model, the problem of large occupied external space in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, and particularly relates to a battery pack sealing structure. Background Art

[0002] With the wide application of new energy batteries, the demand for strict sealing of new energy battery packs is also increasing day by day.

[0003] In the existing battery pack sealing structure, installation lugs are usually arranged at the top of the battery box body and the edge of the box cover. By arranging a sealing ring between the installation lugs, the box body and the box cover are sealed. Due to the arrangement of the installation lugs, the overall structure of the battery pack bulges outwards, resulting in a relatively large overall occupied volume of the battery pack.

[0004] The existing battery pack sealing structure occupies a relatively large external space. Summary of the Utility Model

[0005] The embodiment of the utility model provides a battery pack sealing structure, which can solve the problem of relatively large occupied external space in the prior art. The technical solution is as follows:

[0006] A battery pack sealing structure includes: a box body, a box cover and a first sealing ring.

[0007] The box body is a cuboid structure with an upward opening. A first horizontal mounting plate facing the inside of the box body is horizontally arranged at the top of the box body. The first horizontal mounting plate is arranged annularly along the opening of the box body. The box cover has a second horizontal mounting plate matching the first horizontal mounting plate. The first sealing ring is horizontally arranged annularly along the opening of the box body. The first sealing ring is arranged between the first horizontal mounting plate and the second horizontal mounting plate.

[0008] Optionally, it further includes vertical screws. A plurality of first screw holes matching the vertical screws are provided on the first horizontal mounting plate, the second horizontal mounting plate and the first sealing ring. The first screw holes are arranged along the direction in which the first sealing ring is arranged.

[0009] Optionally, the pitch of the first screw holes is 70 mm.

[0010] Optionally, it further includes a second sealing ring. The box body includes a first vertical mounting plate. The first vertical mounting plate is located at the bottom of the first horizontal mounting plate. The box cover has a second vertical mounting plate matching the first vertical mounting plate. The second vertical mounting plate is connected to the second horizontal mounting plate. The second sealing ring is vertically arranged annularly along the opening of the box body. The second sealing ring is arranged between the first vertical mounting plate and the second vertical mounting plate.

[0011] Optionally, the first sealing ring is connected to and integrally formed with the second sealing ring.

[0012] Optionally, a third horizontal mounting plate is provided at the bottom of the first vertical mounting plate, the third horizontal mounting plate faces the inside of the box body, and one end of the second sealing ring is connected to the third horizontal mounting plate.

[0013] Optionally, it further includes horizontal screws. A plurality of second screw holes matching the horizontal screws are provided on the first vertical mounting plate, the second vertical mounting plate, and the second sealing ring, and the second screw holes are arranged along the direction in which the second sealing ring is arranged.

[0014] Optionally, the pitch of the second screw holes is 70 mm, and the first screw holes and the second screw holes are arranged in a staggered manner.

[0015] The beneficial effects brought by the technical solution provided by the embodiment of the present invention at least include:

[0016] A battery pack sealing structure provided by an embodiment of the present invention has a first horizontal mounting plate facing the inside of the box body provided at the top of the box body, so that the box body no longer extends outward and occupies external space. Through the cooperation of the second horizontal mounting plate on the box cover and the first horizontal mounting plate, the first sealing ring is clamped therein, thereby forming a sealing structure between the box cover and the box body. Compared with the prior art in which mounting lugs are convexly provided outside the battery box body, the first horizontal mounting plate in the embodiment of the present invention faces the inside of the box body, which can effectively solve the problem of large occupation of external space in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is an exploded view of the overall structure provided by the embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of the first sealing structure provided by the embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of the second sealing structure provided by the embodiment of the present invention;

[0021] Figure 4It is a schematic structural diagram of the third sealing structure embodiment provided by the embodiment of the present utility model.

[0022] In the figure: 1 - box body; 11 - first horizontal mounting plate; 12 - first vertical mounting plate; 13 - third horizontal mounting plate; 2 - box cover; 21 - second horizontal mounting plate; 22 - second vertical mounting plate; 31 - first sealing ring; 32 - second sealing ring; 41 - vertical screw; 42 - horizontal screw; 51 - first screw hole; 52 - second screw hole. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0024] Figure 1 It is an exploded view of the overall structure provided by the embodiment of the present utility model; Figure 2 It is a schematic structural diagram of the first sealing structure embodiment provided by the embodiment of the present utility model; Figure 3 It is a schematic structural diagram of the second sealing structure embodiment provided by the embodiment of the present utility model; Figure 4 It is a schematic structural diagram of the third sealing structure embodiment provided by the embodiment of the present utility model. As Figures 1 to 4 shown, a battery pack sealing structure includes: a box body 1, a box cover 2 and a first sealing ring 31. The box body 1 is a cuboid structure with an upward opening. A first horizontal mounting plate 11 facing the inside of the box body is horizontally arranged at the top of the box body 1. The first horizontal mounting plate 11 is arranged annularly along the opening of the box body 1. The box cover 2 has a second horizontal mounting plate 21 matching the first horizontal mounting plate 11. The first sealing ring 31 is horizontally arranged annularly along the opening of the box body 1. The first sealing ring 31 is arranged between the first horizontal mounting plate 11 and the second horizontal mounting plate 21.

[0025] Exemplarily, in the embodiment of the present utility model, as Figure 2 shown, a circular first horizontal mounting plate 11 is arranged at the top opening of the box body 1. The first horizontal mounting plate 11 is used to provide a supporting force for the first sealing ring 31. During assembly, the first sealing ring 31 is placed on the first horizontal mounting plate 11, and then the box cover 2 is covered on the first sealing ring 31, so that the second horizontal mounting plate 21 presses the first sealing ring 31 against the first horizontal mounting plate 11, thereby completing the sealing between the box body 1 and the box cover 2, and isolating impurities in the external environment from entering the inside of the box body 1.

[0026] A battery pack sealing structure provided by an embodiment of the present utility model has a first horizontal mounting plate 11 facing the inside of the box body 1 provided at the top of the box body 1, so that the box body 1 no longer extends outward and occupies external space. Through the cooperation of the second horizontal mounting plate 21 on the box cover 2 and the first horizontal mounting plate 11, the first sealing ring 31 is clamped therein, thereby forming a sealing structure between the box cover 2 and the box body 1. Compared with the prior art in which mounting lugs are convexly provided outside the battery box body, the first horizontal mounting plate 11 in the embodiment of the present utility model is arranged facing the inside of the box body 1, which can effectively solve the problem of large external space occupation in the prior art.

[0027] Optionally, it further includes a vertical screw 41. A plurality of first screw holes 51 matching the vertical screw 41 are provided on the first horizontal mounting plate 11, the second horizontal mounting plate 21 and the first sealing ring 31, and the first screw holes 51 are arranged along the direction in which the first sealing ring 31 is arranged.

[0028] Exemplarily, in the embodiment of the present utility model, by providing the first screw holes 51, when installing the first sealing ring 31, the operator can quickly and accurately place the first sealing ring 31 on the first horizontal mounting plate 11 for installation by aligning the positions of the first screw holes 51 on the first horizontal mounting plate 11 and the first sealing ring 31. At the same time, by providing the vertical screw 41, the box body 1 and the box cover 2 can be tightly connected together by means of threaded connection, thereby improving the tightness of the battery pack sealing structure.

[0029] Optionally, the spacing of the first screw holes 51 is 70 mm.

[0030] Exemplarily, in the embodiment of the present utility model, when the spacing of the first screw holes 51 is too large, the first sealing ring 31 in the middle part between two first screw holes 51 may not be completely fixed on the first horizontal mounting plate 11. When the spacing of the first screw holes 51 is too small, not only the production cost is increased, but also the operation during installation is relatively complicated. When the spacing of the first screw holes 51 is 70 mm to 95 mm, it can not only meet the sealing requirements of the first sealing ring 31, but also not set too many first screw holes 51. Among them, when the spacing of the first screw holes 51 is 70 mm, it is the best, thereby further improving the tightness of the battery pack sealing structure and also improving the operation convenience of the battery pack sealing structure.

[0031] Optionally, it further includes a second sealing ring 32. The box body 1 includes a first vertical mounting plate 12, and the first vertical mounting plate 12 is located at the bottom of the first horizontal mounting plate 11. The box cover 2 has a second vertical mounting plate 22 that matches the first vertical mounting plate 12. The second vertical mounting plate 22 is connected to the second horizontal mounting plate 21. The second sealing ring 32 is arranged annularly and vertically along the opening of the box body 1, and the second sealing ring 32 is arranged between the first vertical mounting plate 12 and the second vertical mounting plate 22.

[0032] Exemplarily, in the embodiment of the present invention, as Figure 3 shown, a second sealing ring 32 is provided, and the second sealing ring 32 is clamped between the first vertical mounting plate 12 and the second vertical mounting plate 22. When external impurities want to enter the interior of the box body 1, they first need to pass through the filtration of the second sealing ring 32 and then through the filtration of the first sealing ring 31, so that it is more difficult for external impurities to enter the interior of the box body 1, thereby further enhancing the tightness of the sealing structure of this battery pack.

[0033] Optionally, the first sealing ring 31 is connected to and integrally formed with the second sealing ring 32.

[0034] Exemplarily, in the embodiment of the present invention, the first sealing ring 31 and the second sealing ring 32 can be manufactured by an integrally formed process. Compared with the form of using separate first sealing ring 31 and second sealing ring 32, the integrally formed process saves the process flow during production, and at the same time is more convenient when installing the first sealing ring 31 and the second sealing ring 32, thereby saving the installation time and reducing the production cost of the sealing structure of this battery pack.

[0035] Optionally, a third horizontal mounting plate 13 is provided at the bottom of the first vertical mounting plate 12, and the third horizontal mounting plate 13 faces the interior of the box body 1. One end of the second sealing ring 32 is connected to the third horizontal mounting plate 13.

[0036] Exemplarily, in the embodiment of the present invention, as Figure 4 shown, by providing the third horizontal mounting plate 13, after the box cover 2 is installed with the box body 1, the second vertical mounting plate 22 and the outer shell of the box body 1 are in the same plane, further reducing the maximum outer dimension of the sealing structure of this battery pack. At the same time, the assembled battery pack structure is a cuboid structure as a whole, which is more beautiful.

[0037] Optionally, it further includes a horizontal screw 42. A plurality of second screw holes 52 that match the horizontal screw 42 are provided on the first vertical mounting plate 12, the second vertical mounting plate 22, and the second sealing ring 32, and the second screw holes 52 are arranged along the direction in which the second sealing ring 32 is arranged.

[0038] Exemplarily, in the embodiment of the present utility model, by providing the second screw hole 52, when installing the second sealing ring 32, the operator can quickly and accurately place the second sealing ring 32 on the first vertical mounting plate 12 for installation by aligning the positions of the second screw holes 52 on the first vertical mounting plate 12 and the second sealing ring 32. Meanwhile, by providing the horizontal screw 42, the box body 1 and the box cover 2 can be tightly connected together by means of threaded connection, thereby further improving the tightness of the battery pack sealing structure of the present utility model.

[0039] Optionally, the distance between the second screw holes 52 is 70 mm, and the first screw holes 51 and the second screw holes 52 are arranged in a staggered manner.

[0040] Exemplarily, in the embodiment of the present utility model, the optimal distance between the screw holes is 70 mm. At this distance, the best sealing performance can be achieved with the least number of screw holes. The first screw holes 51 and the second screw holes 52 are arranged in a staggered manner. On the one hand, there will be no interference when installing the vertical screw 41 and the horizontal screw. On the other hand, due to the staggered arrangement, the distance between the screw holes is reduced, making it more difficult for external impurities to enter the box body 1, thereby further improving the tightness of the battery pack sealing structure of the present utility model.

[0041] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the description and claims of the patent application of the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0042] The above are only optional embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery pack sealing structure, characterized in that: include: The box body (1), the box cover (2) and the first sealing ring (31), The box body (1) is a rectangular parallelepiped structure with an opening facing upwards; a first horizontal mounting plate (11) is horizontally arranged on the top of the box body (1) and faces the interior of the box body; the first horizontal mounting plate (11) is arranged along the opening ring of the box body (1); the box cover (2) has a second horizontal mounting plate (21) matching the first horizontal mounting plate (11); the first sealing ring (31) is horizontally arranged along the opening ring of the box body (1); and the first sealing ring (31) is arranged between the first horizontal mounting plate (11) and the second horizontal mounting plate (21).

2. A battery pack sealing structure according to claim 1, characterized in that: It also includes a vertical screw (41), and a plurality of first screw holes (51) matching the vertical screw (41) are provided on the first horizontal mounting plate (11), the second horizontal mounting plate (21) and the first sealing ring (31), and the first screw holes (51) are arranged along the direction in which the first sealing ring (31) is arranged.

3. A battery pack sealing structure according to claim 2, characterized in that: The spacing between the first screw holes (51) is 70 mm.

4. A battery pack sealing structure according to claim 3, characterized in that: The box body (1) further comprises a second sealing ring (32), wherein the box body (1) comprises a first vertical mounting plate (12), wherein the first vertical mounting plate (12) is located at the bottom of the first horizontal mounting plate (11), and the box cover (2) comprises a second vertical mounting plate (22) matching the first vertical mounting plate (12), wherein the second vertical mounting plate (22) is connected to the second horizontal mounting plate (21), and the second sealing ring (32) is vertically arranged along the open ring of the box body (1), and the second sealing ring (32) is arranged between the first vertical mounting plate (12) and the second vertical mounting plate (22).

5. A battery pack sealing structure according to claim 4, characterized in that: The first sealing ring (31) and the second sealing ring (32) are connected and formed as one piece.

6. A battery pack sealing structure according to claim 4, characterized in that: A third horizontal mounting plate (13) is arranged at the bottom of the first vertical mounting plate (12), the third horizontal mounting plate (13) is arranged toward the inside of the box body (1), and one end of the second sealing ring (32) is connected to the third horizontal mounting plate (13).

7. A battery pack sealing structure according to claim 4, characterized in that: It also includes a horizontal screw (42), and a plurality of second screw holes (52) matching the horizontal screw (42) are provided on the first vertical mounting plate (12), the second vertical mounting plate (22) and the second sealing ring (32), and the second screw holes (52) are arranged along the direction in which the second sealing ring (32) is arranged.

8. A battery pack sealing structure according to claim 7, characterized in that: The spacing between the second screw holes (52) is 70 mm, and the first screw holes (51) and the second screw holes (52) are arranged in a staggered manner.

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