Blade battery case structure

Abstract

The utility model relates to the technical field of blade batteries, in particular to a blade battery shell structure which comprises a front panel, a left panel, a rear panel and a right panel which are integrally connected in sequence, the front panel, the left panel, the rear panel and the right panel are all aluminum alloy plates and form a rectangular shell in a surrounding mode, an anti-explosion prefabricated groove which is sunken downwards is formed in the front panel, and the anti-explosion prefabricated groove is formed in the right panel. The position, located at the bottom of the anti-explosion prefabricated groove, of the front panel forms an anti-explosion mark sunken downwards, a covering plate capable of partially covering the anti-explosion prefabricated groove is arranged at an upper side groove opening of the anti-explosion prefabricated groove, and the covering plate is an aluminum alloy plate and is located in a surrounding area of the upper side groove opening of the anti-explosion prefabricated groove. A plurality of prefabricated connecting ribs which are arranged at intervals are integrally connected between the covering plate and the edge portion, located on the notch of the upper side of the anti-explosion prefabricated groove, of the front panel, an anti-explosion opening is formed between every two adjacent prefabricated connecting ribs, and the safety performance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of blade batteries, in particular to a blade battery shell structure. Background Art

[0002] In today's society, as the use of electric vehicles becomes more and more widespread, the use of batteries will also become more and more frequent, and the demand and requirements for batteries will also increase. Among them, blade batteries are increasingly adopted due to their own advantages. Existing technologies have also formed many patented technologies for blade batteries.

[0003] For example, the Chinese patent application number 202222104913.0 discloses a blade battery shell, which includes multiple side walls formed by bending a plate, and the multiple side walls enclose a battery accommodating cavity; the multiple side walls include a first side wall formed by bending from the head end of the plate and a connecting side wall formed by bending from the end of the plate; the connecting side wall overlaps on the outside of the first side wall, and a welding seam is formed at the overlapping position of the connecting side wall and the first side wall, and the connecting side wall is welded and fixed to the first side wall along the welding seam.

[0004] For example, the Chinese patent application number 202222043221.X discloses a battery case, a battery and an electrical device. The battery case includes a shell body, and a first area is provided in the middle of at least one surface of the shell body. The area of ​​the first area is 1 / 2 of the surface area of ​​the shell body where the first area is located; wherein an explosion-proof valve is provided in the first area.

[0005] The above-mentioned existing technologies have made many improvements to the explosion-proof performance of blade batteries, making the explosion-proof performance better. However, in fact, when a problem occurs with the battery and it ruptures, the internal gas or some broken objects may splash, thereby affecting the peripheral structures or personnel using the battery. Utility Model Content

[0006] The purpose of the utility model is to provide a blade battery shell structure with better safety performance.

[0007] The above-mentioned purpose of the present utility model is achieved through the following technical solutions: a blade battery shell structure, comprising a front panel, a left panel, a rear panel and a right panel which are connected in sequence as a whole, the front panel, the left panel, the rear panel and the right panel are all aluminum alloy plates and surround each other to form a rectangular shell, a downwardly concave explosion-proof prefabricated groove is formed on the front panel, the front panel is located at the bottom of the explosion-proof prefabricated groove to form a downwardly concave explosion-proof mark, a cover plate which can partially cover the explosion-proof prefabricated groove is provided at the upper notch of the explosion-proof prefabricated groove, the cover plate is an aluminum alloy plate and is located in the surrounding area of ​​the upper notch of the explosion-proof prefabricated groove, the cover plate and the front panel are integrally connected with a number of prefabricated connecting ribs arranged at intervals between the edge of the upper notch of the explosion-proof prefabricated groove, and explosion-proof openings are formed between adjacent prefabricated connecting ribs.

[0008] As a preferred embodiment of the present invention, the vertical projection of the covering plate can completely cover the explosion-proof mark.

[0009] As a preferred embodiment of the present invention, the explosion-proof mark is composed of a plurality of linear indentations with their centers intersecting.

[0010] As a preferred embodiment of the present invention, there are two linear indentations that cross to form an X shape.

[0011] As a preferred embodiment of the present invention, the cross section of the linear indentation is V-shaped or rectangular.

[0012] As a preferred embodiment of the present invention, the explosion-proof prefabricated groove is a rectangular groove, and the covering plate is a rectangular plate.

[0013] As a preferred embodiment of the present invention, the diagonals of the explosion-proof prefabricated grooves coincide with the diagonals of the cover plates.

[0014] As a preferred embodiment of the present invention, prefabricated connecting ribs are integrally connected between the upper, lower, left, and right edge portions of the cover plate and the upper, lower, left, and right edge portions of the front panel located at the upper notch of the explosion-proof prefabricated groove.

[0015] As a preferred embodiment of the present invention, the explosion-proof prefabricated groove is arranged in the central area of ​​the front panel.

[0016] As a preferred embodiment of the present invention, heat dissipation fins are integrally connected between the side walls and the bottom wall of the explosion-proof prefabricated trough.

[0017] The beneficial effects of the utility model are as follows: the design of the cover plate effectively protects the surrounding environment, because when the battery shell is broken, the internal gas is ejected and the broken objects are splashed outward, and the cover plate can effectively block them;

[0018] Of course, there is enough space left for overflow from the explosion-proof prefabricated groove and explosion-proof port to ensure smooth pressure relief;

[0019] The new structural design also makes the rupture more orderly, reducing the occurrence of accidents. At the same time, the structural stability and heat dissipation of the structure itself can be better guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 2. It is a schematic diagram of the three-dimensional structure of the blade battery shell structure in the embodiment;

[0021] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure after the middle structure is removed and the prefabricated connecting reinforcement is added. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0024] Examples, such as Figure 1 、 2As shown, the blade battery shell structure includes a front panel 11, a left panel 12, a rear panel 13 and a right panel 14 which are connected in sequence. The front panel 11, the left panel 12, the rear panel 13 and the right panel 14 are connected in sequence in an integrated manner. The front panel 11, the left panel 12, the rear panel 13 and the right panel 14 are all aluminum alloy plates and are surrounded to form a rectangular shell, which is also a conventional shape. Of course, the front panel 11, the left panel 12, the rear panel 13 and the right panel 14 are also rectangular flat plate structures. The length dimensions of these four panels are in the up and down directions and are consistent, but the front panel 11 and the rear panel 13 are used as the main panels, so the width of the two is the same and is much larger than the width of the left panel 12 and the right panel 14. Only in this way can the characteristics of the blade battery be reflected, that is, long and narrow. This is also the existing conventional design and will not be repeated here. The feature of the present application is that a downwardly concave explosion-proof prefabricated groove 111 is formed on the front panel 11, and the front panel 11 is located at the bottom of the explosion-proof prefabricated groove 111 to form a downwardly concave explosion-proof mark 1111, and a cover plate 2 that can partially cover the explosion-proof prefabricated groove 111 is provided at the upper notch of the explosion-proof prefabricated groove 111. Through the design of the cover plate 2, it can effectively ensure that in the pressure relief process after the explosion-proof mark 1111 ruptures due to high pressure, the high-pressure gas spraying outward, the liquid splashing inside, the metal fragments, etc. are well shielded in the first time, preventing a large impact from immediately hitting the surrounding environment, because although no explosion occurs, there is still some debris with some ejection force outward when it ruptures. The cover plate 2 is an aluminum alloy plate and is located within the area enclosed by the upper notch of the explosion-proof prefabricated groove 111. That is, the area of ​​the cover plate 2 is smaller than the area enclosed by the upper notch of the explosion-proof prefabricated groove 111, and the upper surface of the cover plate 2 is kept consistent with the upper surface of the front panel 11 and is located in the same plane as possible. Furthermore, the cover plate 2 and the front panel 11 are integrally connected at the edge of the upper notch of the explosion-proof prefabricated groove 111 by a plurality of prefabricated connecting ribs 3 arranged at intervals. Explosion-proof openings 30 are formed between adjacent prefabricated connecting ribs 3. That is, the intervals between adjacent prefabricated connecting ribs 3 are the explosion-proof openings 30. The explosion-proof openings 30 are used during the explosion-proof pressure relief process, such as when splashing and overflowing are delayed by the cover plate 2 and can still flow out without being blocked on the battery shell, thus ensuring that pressure relief can proceed smoothly.

[0025] Preferably, the vertical projection of the cover plate 2 completely covers the explosion-proof scar 1111. That is, the cover plate 2 is above the explosion-proof scar 1111, and the projection of the explosion-proof scar 1111 does not exceed the vertical projection of the cover plate 2, thereby effectively providing a protective shield. During pressure relief, any outflowing material is blocked and delayed by the cover plate 2, flowing outward and outward through the explosion-proof vent 30.

[0026] Preferably, the explosion-proof mark 1111 is composed of several linear indentations 11111 intersecting at the center. Furthermore, the linear indentations 11111 are two indentations that intersect to form an X-shape. This design prevents the shell at the explosion-proof mark 1111 from breaking apart along the explosion-proof mark 1111, thus reducing the risk of broken hard objects causing safety issues. Furthermore, the cross-section of the linear indentation 11111 is V-shaped or rectangular, meaning that the linear indentation 11111 is a downwardly concave V-shaped groove or rectangular groove. V-shaped grooves offer a relatively better effect.

[0027] Further optimization is achieved by designing the explosion-proof prefabricated groove 111 as a rectangular groove and the cover plate 2 as a rectangular plate. This structure is relatively regular and stable. Preferably, the diagonals of the explosion-proof prefabricated groove 111 coincide with the diagonals of the cover plate 2. It is also preferable that the extension lines of the two linear indentations 11111 that intersect to form an X-shape also correspond vertically to the diagonals of the cover plate 2, further enhancing structural stability and balance.

[0028] In addition, prefabricated connecting ribs 3 are integrally connected between the upper, lower, left and right edge portions of the cover plate 2 and the upper, lower, left and right edge portions of the front panel 11 located at the upper side notch of the explosion-proof prefabricated groove 111 to ensure overall force balance. The prefabricated connecting ribs 3 can also be a rectangular flat plate structure.

[0029] Of course, the explosion-proof prefabricated groove 111 is preferably arranged in the central area of ​​the front panel 11.

[0030] Preferably, heat dissipation fins 1112 are integrally connected between the side walls and the bottom wall of the explosion-proof prefabricated groove 111. This is to improve the heat dissipation performance during use, and on the other hand, to strengthen the structural strength of the location to ensure the normal use of the battery. The heat dissipation fins 1112 can also be a rectangular plate structure and are distributed along the edges on the four sides of the groove side walls.

[0031] Through such a design, the overall explosion-proof performance is optimized, the safety of pressure release in accidental situations is reduced, and the battery itself can be better protected. It is a more practical design.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. Blade battery shell structure, characterized in that: The invention comprises a front panel (11), a left panel (12), a rear panel (13) and a right panel (14) which are connected in sequence as a whole, wherein the front panel (11), the left panel (12), the rear panel (13) and the right panel (14) are all aluminum alloy plates and surround each other to form a rectangular body shell, the front panel (11) is formed with a downwardly concave explosion-proof prefabricated groove (111), the front panel (11) is located at the bottom of the groove of the explosion-proof prefabricated groove (111) to form a downwardly concave explosion-proof mark (1111), and the explosion-proof A cover plate (2) capable of partially covering the explosion-proof prefabricated groove (111) is provided at the upper notch of the prefabricated groove (111); the cover plate (2) is an aluminum alloy plate and is located in the surrounding area of ​​the upper notch of the explosion-proof prefabricated groove (111); the cover plate (2) and the front panel (11) are integrally connected between the edge of the upper notch of the explosion-proof prefabricated groove (111) and a plurality of prefabricated connecting ribs (3) arranged at intervals; explosion-proof openings (30) are formed between adjacent prefabricated connecting ribs (3).

2. The blade battery shell structure according to claim 1, characterized in that: The vertical projection of the covering plate (2) can completely cover the explosion-proof mark (1111).

3. The blade battery shell structure according to claim 1, characterized in that: The explosion-proof mark (1111) is composed of a plurality of linear indentations (11111) intersecting at the center.

4. The blade battery shell structure according to claim 3, characterized in that: There are two linear indentations (11111) that cross to form an X shape.

5. The blade battery shell structure according to claim 4, characterized in that: The cross section of the linear indentation (11111) is V-shaped or rectangular.

6. The blade battery shell structure according to claim 4, characterized in that: The explosion-proof prefabricated groove (111) is a rectangular groove, and the covering plate (2) is a rectangular plate.

7. The blade battery shell structure according to claim 6, characterized in that: The diagonal lines of the explosion-proof prefabricated groove (111) coincide with the diagonal lines of the cover plate (2).

8. The blade battery shell structure according to claim 7, characterized in that: Prefabricated connecting ribs (3) are integrally connected between the upper, lower, left, and right edge portions of the cover plate (2) and the upper, lower, left, and right edge portions of the front panel (11) located at the upper notch of the explosion-proof prefabricated groove (111).

9. The blade battery shell structure according to claim 6, characterized in that: The explosion-proof prefabricated groove (111) is arranged in the central area of ​​the front panel (11).

10. The blade battery shell structure according to claim 6, characterized in that: Heat dissipation fins (1112) are integrally connected between the side walls and the bottom wall of the explosion-proof prefabricated trough (111).

Images