Upper cover of battery pack

Abstract

The utility model discloses a battery pack upper cover which comprises a top plate and second peripheral side plates connected to the peripheral side edge of the top plate, the battery pack upper cover is provided with a plurality of convex parts in a protruding mode, at least part of the convex parts extend to the second peripheral side plates from the top plate, and at least all corners of the top plate are provided with convex parts extending to the two adjacent second peripheral side plates. According to the battery pack upper cover, the included angle of 90 degrees is formed between the top plate and the second peripheral side plate, the part of the included angle is low in structural strength and prone to deformation, the multiple protruding parts are arranged on the battery pack upper cover in a protruding mode, and at least part of the protruding parts extend to the second peripheral side plate from the top plate; and at least each corner of the top plate is provided with a convex part extending to two adjacent second peripheral side plates, so that the structural strength of the included angle between each corner of the battery pack upper cover and the top plate and the side edge is enhanced, the structural strength of the whole upper cover is improved, the resonance and noise of the battery pack upper cover are effectively reduced, and the service life of the battery pack upper cover is prolonged. And potential safety hazards caused by separation failure of the upper cover are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack upper cover. Background Art

[0002] The battery pack in the prior art includes a main shell, a battery module and an upper cover. The main shell has a cavity in which the battery module is arranged. The upper cover includes a top plate and a second peripheral side plate connected to the peripheral edge of the top plate. The top plate and the second peripheral side plate are usually flat plates with no concave-convex structures on their surfaces. The structural strength is very low and they are prone to deformation. In addition, their natural vibration frequency is low. During road travel, the upper cover of the battery pack is prone to resonance and noise. In severe cases, the upper cover may be detached and fail to protect the battery module in the battery pack, posing a safety hazard.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The utility model provides a battery pack upper cover.

[0005] The utility model adopts the following technical solutions:

[0006] A battery pack cover, comprising:

[0007] A top plate and a second peripheral side plate connected to the peripheral edge of the top plate, the battery pack cover is protruding with multiple protrusions, at least some of the protrusions extend from the top plate to the second peripheral side plate, and at least each corner of the top plate is provided with a protrusion extending to two adjacent second peripheral side plates.

[0008] Optionally, the battery pack upper cover includes a first convex portion, and the first convex portion includes a main convex portion and a plurality of extended convex portions;

[0009] The main protrusion is located on the top plate, and at least a portion of the extended protrusion extends from the main protrusion to the second peripheral side plate.

[0010] Optionally, the main protrusion is annular and encloses a pit.

[0011] Optionally, a plurality of second protrusions are arranged in the pit, and an area of ​​each of the second protrusions is smaller than that of the first protrusion.

[0012] Optionally, the extended protrusions are arranged in sequence and spaced apart along the circumference of the main protrusion.

[0013] Optionally, in the direction from the main protrusion to the second peripheral side plate, the width of at least part of the extended protrusion gradually decreases.

[0014] Optionally, each of the extending convex portions includes four first extending convex portions and a plurality of second extending convex portions, and a plurality of second extending convex portions are arranged between adjacent first extending convex portions;

[0015] Each of the first extending protrusions extends to a corresponding corner portion on the top plate and two second peripheral side plates on both sides of the corner portion.

[0016] Optionally, the width of the first extending protrusion is greater than the width of the second extending protrusion.

[0017] Optionally, the battery pack upper cover includes a plurality of independent third protrusions;

[0018] The third protrusion extends from the second peripheral side plate to the top plate.

[0019] Optionally, the upper surface of each protrusion is a flat surface.

[0020] By adopting the above technical solution, the utility model has the following beneficial effects:

[0021] The top plate and the second peripheral side plate of the battery pack upper cover of the present application form an angle of 90 degrees. The structural strength of the angle is low and is prone to deformation. By protruding a plurality of protrusions on the battery pack upper cover, at least some of the protrusions extend from the top plate to the second peripheral side plate, and at least each corner of the top plate is provided with a protrusion extending to two adjacent second peripheral side plates, the structural strength of the angles between each corner of the battery pack upper cover of the present application and the top plate and the side is enhanced, the structural strength of the entire upper cover is improved, and the resonance and noise of the battery pack upper cover are effectively reduced, thereby eliminating the safety hazard caused by the failure of the upper cover to detach.

[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of the battery pack cover provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of the top plate of the battery pack cover provided in an embodiment of the present application;

[0026] Figure 3A schematic diagram of a first structure of a second peripheral side plate of a battery pack upper cover provided in an embodiment of the present application;

[0027] Figure 4 A second structural schematic diagram of the second peripheral side plate of the battery pack cover provided in an embodiment of the present application.

[0028] In the figure, the top plate 51, the second peripheral side plate 52, the first convex portion 53, the main convex portion 531, the extended convex portion 532, the first extended convex portion 5321, the second extended convex portion 5321, the pit 54, the main pit 541, the narrow strip pit 542, the second convex portion 55, and the third convex portion 56.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figures 1 to 4As shown, the embodiment of the present application provides a battery pack cover, comprising: a top plate 51 and a second peripheral side plate 52 connected to the peripheral edge of the top plate 51, the battery pack cover is protrudingly provided with a plurality of convex parts, at least part of the convex parts extend from the top plate 51 to the second peripheral side plate 52, and at least each corner of the top plate 51 is provided with a convex part extending to two adjacent second peripheral side plates 52. The top plate 51 and the second peripheral side plate 52 of the battery pack cover of the present application form a 90-degree angle, and the structural strength of the angle is low and easy to deform. By protruding and providing a plurality of convex parts on the battery pack cover, at least part of the convex parts extend from the top plate 51 to the second peripheral side plate 52, and at least each corner of the top plate 51 is provided with a convex part extending to two adjacent second peripheral side plates 52, the structural strength of the angle between each corner of the battery pack cover of the present application and the top plate 51 and the side edge is enhanced, the structural strength of the entire cover is improved, and the resonance and noise of the battery pack cover are effectively reduced, and the safety hazard caused by the failure of the cover to detach is eliminated.

[0034] According to monitoring, when the battery pack cover is not protruding with the above-mentioned convex parts, the natural resonance frequency of the battery pack cover is 15hz. After the above-mentioned convex parts are provided, the natural resonance frequency can be increased to 30hz. Protruding multiple convex parts on the battery pack cover increases the structural strength of the entire cover, and can effectively reduce the natural frequency of the battery pack cover and reduce the resonance risk of the battery pack cover.

[0035] The battery pack cover includes a first protrusion 53, and the first protrusion 53 includes a main protrusion 531 and a plurality of extended protrusions 532. The main protrusion 531 is located on the top plate 51, and at least part of the extended protrusion 532 extends from the main protrusion 531 to the second peripheral side plate 52. The main protrusion 531 is located on the outer surface of the top plate 51, and the main protrusion 531 is arranged close to the edge of the top plate 51. The main protrusion 531 has a large area, which strengthens the structural strength of the top plate 51. The extended protrusion 532 extends from the main protrusion 531 to the second peripheral side plate 52, further strengthening the structural strength of the connection between the top plate 51 and the second peripheral side plate 52, and effectively enhancing the structural strength of the entire battery pack cover.

[0036] The main protrusion 531 is annular and encloses a concave pit 5454. The main protrusion 531 is a closed ring and the concave pit 5454 is located in the middle of the top plate 51. The middle of the top plate 51 is concave and the part of the top plate 51 near the edge is convex. Such a concave-convex matching structure increases the structural strength of the top plate 51 and makes the top plate 51 not easily deformed.

[0037] In a possible implementation, the concave pit 5454 includes a main pit and a narrow strip pit 542 extending from the main pit to the edge of the top plate 51. The structural strength of the edge of the top plate 51 is small, the area of ​​the convex part is large, and the narrow strip pit 542 is between the convex parts. The structural strength of the middle part is large, the area of ​​the convex part is small, and the area of ​​the main pit is large.

[0038] A plurality of second convex portions 55 are arranged in the concave pit 5454, and the area of ​​each second convex portion 55 is smaller than that of the first convex portion 53. The second convex portions 55 are distributed at different positions of the concave pit 5454. The larger the area of ​​the convex portion, the higher the structural strength. The edges and corners of the top plate 51 have weak structural strength and are prone to deformation. Therefore, the area of ​​the first convex portion 53 should be larger, and the area of ​​the second convex portion 55 should be smaller than that of the first convex portion 53.

[0039] Each of the extension protrusions 532 is arranged in sequence along the circumference of the main protrusion 531. Each of the extension protrusions 532 is connected to the main protrusion 531 at one end, and the other end extends to the edge of the top plate 51 or to the second peripheral side plate 52. In this way, one peripheral edge of the main protrusion 531 is extended to the second peripheral side plate 52 through the extension protrusion 532, and the entire top plate 51 and the second peripheral side plate 52 are connected and reinforced by the extension protrusion 532 to form a whole, and the structural strength is high.

[0040] In the direction from the main protrusion 531 to the second peripheral side plate 52, the width of at least part of the extended protrusion 532 gradually decreases. This protrusion structure with a wide root and a narrow end conforms to the mechanical design principle and has a high structural strength.

[0041] Each of the extending convex portions 532 includes four first extending convex portions 5321532 and a plurality of second extending convex portions 5321532, and a plurality of second extending convex portions 5321532 are arranged between adjacent first extending convex portions 5321532. Each of the first extending convex portions 5321532 extends to a corresponding corner portion on the top plate 51 and two second peripheral side plates 52 on both sides of the corner portion, respectively, thereby increasing the structural strength of each corner portion.

[0042] The width of the first extension convex portion 5321532 is greater than the width of the second extension convex portion 5321532. The structural strength of each corner is small and easily deformed. The width of the first extension convex portion 5321532 is set to be greater than the width of the second extension convex portion 5321532, so that the first extension convex portion 5321532 covers a larger area, increases the structural strength of each corner, and the four corners are reinforced and are not easily deformed.

[0043] In a possible implementation, the battery pack cover includes a plurality of independent third protrusions 56. The third protrusions 56 extend from the second peripheral side plate 52 to the top plate 51. The area of ​​the third protrusions 56 on the second peripheral side plate 52 is larger than the area on the top plate 51. The third protrusions 56 increase the structural strength of the second peripheral side plate 52, and partially extend to the top plate 51, thereby reinforcing the connection between the top plate 51 and the second peripheral side plate 52, and increasing the connection strength between the top plate 51 and the second peripheral side plate 52.

[0044] The upper surface of each of the protrusions is a flat surface. The flat surface has good structural strength. The top plate 51, the second peripheral side plate 52 and each protrusion can be made of plastic metal material, which is formed by metal body stamping in one step. The metal body stamping process is simple and the overall structural strength is high. The top plate 51, the second peripheral side plate 52 and each protrusion can also be made of plastic material. The plastic material has low cost. The plastic parts are formed by injection molding in one step. The injection molding process is simple and the overall structural strength is high. The flat surface is convenient to manufacture using metal body stamping process or injection molding process.

[0045] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A battery pack cover, characterized in that: include: A top plate and a second peripheral side plate connected to the peripheral edge of the top plate, the battery pack cover is protruding with multiple protrusions, at least some of the protrusions extend from the top plate to the second peripheral side plate, and at least each corner of the top plate is provided with a protrusion extending to two adjacent second peripheral side plates.

2. The battery pack cover according to claim 1, characterized in that: comprising a first convex portion, wherein the first convex portion comprises a main convex portion and a plurality of extended convex portions; The main protrusion is located on the top plate, and at least a portion of the extended protrusion extends from the main protrusion to the second peripheral side plate.

3. The battery pack cover according to claim 2, characterized in that: The main protrusion is annular and encloses a concave pit.

4. The battery pack cover according to claim 3, characterized in that: A plurality of second convex portions are arranged in the concave pit, and an area of ​​each of the second convex portions is smaller than that of the first convex portion.

5. The battery pack cover according to claim 2, characterized in that: The extended protrusions are arranged in sequence and at intervals along the circumferential direction of the main protrusion.

6. The battery pack cover according to claim 2, characterized in that: In the direction from the main protrusion to the second peripheral side plate, the width of at least part of the extended protrusion gradually decreases.

7. The battery pack cover according to claim 2, characterized in that: Each of the extending convex portions includes four first extending convex portions and a plurality of second extending convex portions, and a plurality of second extending convex portions are arranged between adjacent first extending convex portions; Each of the first extending protrusions extends to a corresponding corner portion on the top plate and two second peripheral side plates on both sides of the corner portion.

8. The battery pack cover according to claim 7, characterized in that: The width of the first extending protrusion is greater than the width of the second extending protrusion.

9. The battery pack cover according to any one of claims 1 to 8, characterized in that: comprising a plurality of independent third protrusions; The third protrusion extends from the second peripheral side plate to the top plate.

10. The battery pack cover according to any one of claims 1 to 8, characterized in that: The upper surface of each convex portion is a flat surface.

Images