Sealing ring structure and lithium ion electrode column using same

Abstract

The utility model relates to the technical field of lithium battery accessories, in particular to a sealing ring structure and a lithium ion electrode column using the same. The utility model provides a sealing ring structure which comprises a pole, a base and a sealing piece, the pole is fixed on the upper surface of the base, and an annular groove is arranged on the upper surface around the pole; the sealing element is sleeved on the outer wall of the bottom of the pole, and the lower annular bulge at the bottom of the sealing element is embedded in the annular groove. When the lower annular bulge is inserted into the annular groove, the upper annular bulge can prevent aluminum scraps of the pole from causing short circuit of the battery; and when the sealing ring is wrongly assembled, the upper annular bulge cannot be inserted into the annular groove, so that the sealing of the sealing ring fails, and a bad product can be conveniently detected during later detection.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery accessories, in particular to a sealing ring structure and a lithium ion electrode column using the same. Background Art

[0002] When designing a lithium-ion battery cover, a sealing ring is usually used to assemble the cover to achieve the insulation and sealing effect of the lithium-ion battery. However, there are many designs of sealing rings, especially special-shaped sealing rings designed to improve the sealing effect.

[0003] In actual applications, special-shaped sealing rings are often assembled incorrectly, resulting in leakage. Once the sealing ring is assembled, it is difficult to detect the phenomenon of the sealing ring being installed upside down without completely disassembling it.

[0004] Therefore, how to solve the problem of the sealing ring being installed upside down during the installation process is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing ring structure to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides a sealing ring structure, comprising:

[0007] Pole, base and seal, of which

[0008] The pole is fixed on the upper surface of the base, and the upper surface is provided with an annular groove around the pole;

[0009] The sealing member is sleeved on the outer wall of the bottom of the pole, and the lower annular protrusion at the bottom of the sealing member is embedded in the annular groove.

[0010] Preferably, the sealing member further includes an upper annular protrusion, which is arranged on the upper portion of the sealing member and on a side of the sealing member close to the inner ring.

[0011] Preferably, the inner wall of the upper annular protrusion is suitable for abutting against the outer wall of the pole.

[0012] Preferably, an annular groove is provided on the outer wall of the pole along the circumferential direction, and the horizontal height of the upper annular protrusion is consistent with the bottom wall of the annular groove.

[0013] Preferably, the upper annular protrusion and the lower annular protrusion are staggered.

[0014] Preferably, the lower annular protrusion is provided at the outer edge of the sealing member.

[0015] Preferably, the depth of the annular groove is greater than the height of the lower annular protrusion.

[0016] Preferably, the base is circular or rectangular.

[0017] As a preference, the parameter setting formula of the seal must satisfy:

[0018] (H+h)>1.45H

[0019]

[0020] The width of the seal is W, and the thickness of the seal is H;

[0021] The upper annular protrusion and the lower annular protrusion have the same size, and the thickness of the upper annular protrusion and the lower annular protrusion is h.

[0022] On the other hand, the present invention further provides a lithium ion electrode column, comprising: a lithium ion electrode column, wherein a sealing member is adapted to be sleeved on an outer wall of the lithium ion electrode column.

[0023] Compared with the prior art, an embodiment of a sealing ring structure of the present invention has the following beneficial effects: through the cooperation of the annular groove provided on the pole and the lower annular protrusion, assembly errors of the sealing ring can be avoided during assembly.

[0024] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A three-dimensional diagram of a sealing ring structure of the present invention is shown;

[0028] Figure 2 Shows a three-dimensional view of the sealing member of the present invention;

[0029] Figure 3 Shows a cutaway perspective view of the sealing member of the present invention;

[0030] Figure 4 Shows a three-dimensional view of the pole and base of the utility model;

[0031] Figure 5 Shows a cross-sectional perspective view of a pole and a seal of the present invention;

[0032] Figure 6 The base of the present invention is shown as a rectangular stereogram;

[0033] Figure 7 A schematic diagram showing a reversely installed seal of the present invention is shown;

[0034] Figure 8 A longitudinal cross-sectional schematic diagram of the sealing element of the present invention is shown.

[0035] In the picture:

[0036] 1. Pole; 2. Base; 20. Annular groove; 21. Annular groove; 3. Seal; 32. Upper annular protrusion; 33. Lower annular protrusion. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] like Figures 1 to 8 As shown, at least one embodiment provides a sealing structure that can be used for a lithium-ion battery pole, which specifically may include: a pole 1, a base 2, and a seal 3, wherein the pole 1 is fixed to the upper surface of the base 2, and an annular groove 20 is provided on the upper surface of the base 2 and around the pole; the seal 3 is sleeved on the bottom outer wall of the pole 1, and the annular protrusion at the bottom of the seal 3 is embedded in the annular groove 20. Through the cooperation between the seal 3 and the pole 1, the assembly error of the seal 3 can be avoided during assembly. At the same time, after the seal 3 is assembled incorrectly, the seal of the seal 3 can be rendered ineffective, so that defective products can be promptly rejected during inspection.

[0039] Reference Attachment Figure 3 In some embodiments, the seal 3 further includes an upper annular protrusion 32, which is disposed on the upper portion of the seal 3 and on a side of the seal 3 close to the inner ring. When the upper annular protrusion 32 abuts against the outer wall of the pole 1, burrs on the outer wall of the pole 1 can penetrate the upper annular protrusion 32, thereby preventing the risk of short circuits caused by burrs on the pole 1.

[0040] Reference Attachment Figure 3In some embodiments, the upper annular protrusion 32 is staggered with the lower annular protrusion 33. The staggered arrangement of the upper annular protrusion 32 and the lower annular protrusion 33 can prevent the seal 3 from being installed upside down. If the seal 3 is installed upside down, the upper annular protrusion 32 cannot be inserted into the annular groove 20.

[0041] Reference Attachment Figure 5 In some embodiments, the depth of the annular groove 20 is greater than the height of the lower annular protrusion 33. That is, after the lower annular protrusion 33 is inserted into the annular groove 20, a gap is provided between the lower end of the lower annular protrusion 33 and the bottom wall of the annular groove 20. When the seal 3 is expanded by the electrolyte, it will generate a certain amount of stress, squeezing the terminal 1. However, the depth of the annular groove 20 is greater than the thickness of the lower annular protrusion 33, providing sufficient space for the lower annular protrusion 33 to expand. The annular groove 20 can absorb some of the expanded volume of the seal 3, relieving its stress and preventing sealing failure of the seal 3.

[0042] Reference Attachment Figure 4 and Figure 5 To facilitate visual inspection of assembly misalignment, the outer wall of the pole 1 is circumferentially defined with an annular groove 21. When the lower annular protrusion 33 is inserted into the annular groove 20, the upper annular protrusion 32 is aligned with the bottom wall of the annular groove 21. After the seal 3 is fitted onto the outer wall of the pole 1, the relative height between the seal 3 and the annular groove 21 allows for direct visual inspection of whether the seal 3 is installed upside down.

[0043] Reference Attachment Figure 6 Optionally, the base 2 may be rectangular or circular; or other shapes with an outer diameter larger than the pole 1.

[0044] Reference Attachment Figure 5 In some embodiments, to prevent the pole 1 from short-circuiting, the upper annular protrusion 32 is adapted to abut against the outer wall of the pole 1. During assembly, aluminum chips on the outer wall of the pole 1 can penetrate into the inner wall of the seal 3, preventing aluminum chips from short-circuiting and creepage effects.

[0045] like Figure 8 As shown, in some embodiments, the width of the seal 3 is W, the thickness of the seal 3 is H; the thickness of the upper annular protrusion 32 and the lower annular protrusion 33 is h, wherein the parameter setting formula of the seal 3 is:

[0046] (H+h)>1.45H

[0047]

[0048] Some embodiments further provide a lithium-ion electrode column, comprising: a lithium-ion electrode column; a sealing member 3 adapted to be sleeved on an outer wall of the lithium-ion electrode column; and a sealing ring structure according to the above embodiment.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Based on the above-described preferred embodiments of the present invention, and in accordance with the above description, relevant personnel are fully capable of making various changes and modifications without departing from the scope of the technical concept of this invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sealing ring structure, characterized in that: include: A pole (1), a base (2) and a seal (3), wherein The pole (1) is fixed on the upper surface of the base (2), and the upper surface is provided with an annular groove (20) around the pole (1); The sealing member (3) is sleeved on the bottom outer wall of the pole (1), and the lower annular protrusion (33) at the bottom of the sealing member (3) is embedded in the annular groove (20); The sealing member (3) further comprises an upper annular protrusion (32), the upper annular protrusion (32) being arranged on the upper portion of the sealing member (3), the upper annular protrusion (32) being arranged on a side of the sealing member (3) close to the inner ring, and the upper annular protrusion (32) and the lower annular protrusion (33) being arranged in a staggered manner; The parameter setting formula of the seal (3) must satisfy: (H+h)>1.45H The width of the sealing member (3) is W, and the thickness of the sealing member (3) is H; The upper annular protrusion (32) and the lower annular protrusion (33) have the same size, and the thickness of the upper annular protrusion (32) and the lower annular protrusion (33) is h.

2. The sealing ring structure according to claim 1, characterized in that: The inner wall of the upper annular protrusion (32) is suitable for abutting against the outer wall of the pole (1).

3. The sealing ring structure according to claim 2, characterized in that: An annular groove (21) is provided on the outer wall of the pole (1) along the circumferential direction, and the horizontal height of the upper annular protrusion (32) is consistent with the bottom wall of the annular groove (21).

4. The sealing ring structure according to claim 1, wherein: The lower annular protrusion (33) is arranged at the outer edge of the sealing member (3).

5. The sealing ring structure according to claim 1, wherein: The depth of the annular groove (20) is greater than the height of the lower annular protrusion (33).

6. The sealing ring structure according to claim 1, wherein: The base (2) is circular or rectangular.

7. A lithium ion electrode column, characterized in that: include: A lithium ion electrode column, wherein the sealing member (3) is adapted to be sleeved on the outer wall of the lithium ion electrode column; and The sealing ring structure according to any one of claims 1 to 6.

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