Anti-explosion valve structure and cover plate assembly

Abstract

The utility model relates to the technical field of batteries, in particular to an anti-explosion valve structure and a cover plate assembly, and provides an anti-explosion valve structure which comprises an anti-explosion valve, a cover plate and a cover plate, the residual thickness and the skirt edge are arranged on the periphery of the anti-explosion valve; wherein an annular reinforcing part is arranged on the anti-explosion valve; according to the explosion-proof valve, the annular reinforcing part is arranged on one side of the residual thickness and the skirt edge of the explosion-proof valve, so that the explosion pressure stability of the explosion-proof valve is improved, the effect of improving the safety performance of a battery cell is further achieved, the yield of a production line is improved, and the service life of the battery cell is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an explosion-proof valve structure and a cover plate assembly. Background Art

[0002] In the battery cell structure, safety is one of the most important factors of the battery cell structure, and the explosion-proof valve is the most important component for the battery cell safety. Therefore, under a certain explosion pressure, improving the explosion pressure stability and fatigue resistance of the explosion-proof valve can improve the safety performance of the battery cell.

[0003] In some related technologies, reinforcing ribs are added to the explosion-proof valve, and an added reinforcing rib structure is adopted. However, the simple reinforcing rib structure can only make the explosion pressure stability of the explosion-proof valve only reach 0.X±0.2 MPa, which is difficult to meet the required stability requirements of the explosion-proof valve.

[0004] Therefore, preventing the explosion-proof valve from bursting prematurely is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0005] The utility model provides an explosion-proof valve structure to solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides an explosion-proof valve structure, including: an explosion-proof valve; and residual thickness and skirt edges arranged around the explosion-proof valve; wherein an annular reinforcement portion is arranged on the explosion-proof valve.

[0007] Furthermore, the annular reinforcement portion includes notch-shaped reinforcement ribs; wherein the notch-shaped reinforcement ribs are arranged at the edge position of the residual thickness.

[0008] Furthermore, the annular reinforcement portion includes a circular reinforcement rib; wherein the circular reinforcement rib is arranged at the center position of the explosion-proof valve.

[0009] Furthermore, rectangular reinforcement ribs are arranged around the circular reinforcement ribs.

[0010] Furthermore, C-shaped reinforcement ribs are provided on both sides of the circular reinforcement rib.

[0011] Furthermore, cross-shaped reinforcement ribs are arranged around the circular reinforcement ribs.

[0012] The utility model also provides a cover plate assembly, including a plain aluminum sheet and the explosion-proof valve structure as described above, and a protective sheet is arranged on the upper part of the explosion-proof valve structure; wherein the explosion-proof valve structure is arranged on the assembly hole at the center position of the plain aluminum sheet.

[0013] Furthermore, a pole structure is provided on the bare aluminum sheet; wherein the pole structure is provided on both sides of the explosion-proof valve structure.

[0014] Furthermore, upper plastic and lower plastic are respectively provided at both ends of the pole structure; wherein the bottom surface of the upper plastic abuts against the top surface of the plain aluminum sheet; and the top surface of the lower plastic abuts against the bottom surface of the plain aluminum sheet.

[0015] Furthermore, a sealing ring is sleeved on the pole structure; wherein the sealing ring is arranged between the lower plastic and the bare aluminum sheet.

[0016] Compared with the prior art, the utility model increases the stability of the explosion pressure of the explosion-proof valve by arranging an annular reinforcement portion on the residual thickness and skirt side of the explosion-proof valve, thereby achieving the effect of improving the safety performance of the battery cell, while also improving the production line qualification rate and battery cell life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 An exploded view of the optimal embodiment of the cover plate assembly of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the optimal embodiment of the explosion-proof valve structure of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the optimal embodiment of the explosion-proof valve with rectangular reinforcement ribs of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the optimal embodiment of the explosion-proof valve with C-shaped reinforcement ribs of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the optimal embodiment of the explosion-proof valve with cross-shaped reinforcement ribs of the utility model.

[0023] Among them, 1. explosion-proof valve; 11. residual thickness; 12. skirt; 13. annular reinforcement; 14. rectangular reinforcement ribs; 15. C-shaped reinforcement ribs; 16. cross-shaped reinforcement ribs; 2. pole structure; 3. upper plastic; 4. lower plastic; 5. sealing ring; 6. plain aluminum sheet; 7. protective sheet. DETAILED DESCRIPTION

[0024] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0025] See also Figure 1 , Figure 1 FIG. 1 is an exploded view of the optimal embodiment of the cover plate assembly of the utility model. Figure 1As shown, at least one embodiment provides an explosion-proof valve structure, including: an explosion-proof valve 1; the explosion-proof valve 1 is a sheet-like structure, and a residual thickness 11 and a skirt 12 are arranged around the explosion-proof valve 1; wherein an annular reinforcement portion 13 is arranged on the explosion-proof valve 1, and the annular reinforcement portion 13 on the explosion-proof valve 1 is a mark pressed by a mold. The inner contour of the annular reinforcement portion 13 is a notch shape or a circle.

[0026] Please continue reading Figure 2 , Figure 2 The schematic diagram of the structure of the optimal embodiment of the explosion-proof valve structure of the utility model is shown in FIG. 1 . The annular reinforcement portion 13 includes a notch-shaped reinforcement rib, wherein the notch-shaped reinforcement rib is arranged at the edge of the residual thickness 11 .

[0027] See also Figure 3 Combined with Figure 4 and 5 , Figure 3 It is a structural schematic diagram of the optimal embodiment of the explosion-proof valve with rectangular reinforcement ribs of the utility model; Figure 4 It is a structural schematic diagram of the optimal embodiment of the explosion-proof valve with C-shaped reinforcement ribs of the utility model; Figure 5 The schematic diagram of the structure of the optimal embodiment of the explosion-proof valve with cross-shaped reinforcement ribs of the utility model. Figures 3 to 5 As shown, the annular reinforcement portion 13 includes a circular reinforcement rib, wherein the circular reinforcement rib is arranged at the center of the explosion-proof valve 1. If additional explanation is required, a rectangular reinforcement rib 14 is arranged around the circular reinforcement rib, or a C-shaped reinforcement rib 15 is arranged on both sides of the circular reinforcement rib, or a cross-shaped reinforcement rib 16 is arranged around the circular reinforcement rib.

[0028] Please continue reading Figure 1 .like Figure 1 As shown. Some embodiments further provide a cover plate assembly, comprising a plain aluminum sheet 6 and an explosion-proof valve structure as described above, and a protective sheet 7 is provided on the upper part of the explosion-proof valve structure; wherein the explosion-proof valve structure is arranged on the assembly hole at the center of the plain aluminum sheet 6. A pole structure 2 is provided on the plain aluminum sheet 6; wherein the pole structure 2 is arranged on both sides of the explosion-proof valve structure. An upper plastic 3 and a lower plastic 4 are provided at both ends of the pole structure 2, respectively; wherein the bottom surface of the upper plastic 3 abuts against the top surface of the plain aluminum sheet 6; and the top surface of the lower plastic 4 abuts against the bottom surface of the plain aluminum sheet 6. A sealing ring 5 is sleeved on the pole structure 2; wherein the sealing ring 5 is arranged between the lower plastic 4 and the plain aluminum sheet 6.

[0029] In summary, by providing the annular reinforcement portion 13 on the residual thickness and skirt side of the explosion-proof valve 1, the explosion pressure stability of the explosion-proof valve 1 is increased, thereby achieving the effect of improving the safety performance of the battery cell, while also improving the production line qualification rate and battery cell life.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An explosion-proof valve structure, characterized in that: include: Explosion-proof valve (1); as well as A residual thickness (11) and a skirt (12) provided around the explosion-proof valve (1); in An annular reinforcement portion (13) is provided on the explosion-proof valve (1).

2. The explosion-proof valve structure according to claim 1, characterized in that: The annular reinforcement portion (13) comprises a notch-shaped reinforcement rib; wherein The notch-shaped reinforcing ribs are arranged at the edge of the residual thickness (11).

3. The explosion-proof valve structure according to claim 1, characterized in that: The annular reinforcement portion (13) comprises a circular reinforcement rib; wherein The circular reinforcing rib is arranged at the center of the explosion-proof valve (1).

4. The explosion-proof valve structure according to claim 3, characterized in that: Rectangular reinforcement ribs (14) are arranged around the circular reinforcement ribs.

5. The explosion-proof valve structure according to claim 3, characterized in that: C-shaped reinforcement ribs (15) are arranged on both sides of the circular reinforcement rib.

6. The explosion-proof valve structure according to claim 3, characterized in that: Cross-shaped reinforcement ribs (16) are arranged around the circular reinforcement ribs.

7. A cover plate assembly, characterized in that: include A bare aluminum sheet (6) and an explosion-proof valve structure as described in any one of claims 1 to 6, wherein a protective sheet (7) is provided on the upper portion of the explosion-proof valve structure; wherein The explosion-proof valve structure is arranged on an assembly hole at the center of the smooth aluminum sheet (6).

8. The cover plate assembly according to claim 7, characterized in that: The bare aluminum sheet (6) is provided with a pole structure (2); wherein The pole structure (2) is arranged on both sides of the explosion-proof valve structure.

9. The cover plate assembly according to claim 8, characterized in that: The two ends of the pole structure (2) are respectively provided with an upper plastic (3) and a lower plastic (4); wherein The bottom surface of the upper plastic (3) abuts against the top surface of the smooth aluminum sheet (6); and The top surface of the lower plastic (4) abuts against the bottom surface of the smooth aluminum sheet (6).

10. The cover plate assembly according to claim 9, wherein: The pole structure (2) is sleeved with a sealing ring (5); wherein The sealing ring (5) is arranged between the lower plastic (4) and the smooth aluminum sheet (6).

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