Sealing ring limiting pole, battery top cover structure and battery cell

Abstract

The utility model provides a seal ring limit post, battery top cover structure and battery cell, the seal ring limit post and the seal ring are arranged between the limit post and the battery cover plate, the seal ring limit post comprises a connecting seat and a connecting post, one end of the connecting post is arranged on the connecting seat, one end of the connecting post is provided with a seal ring limit groove, and the other end of the connecting post is provided with a seal ring limit groove. The depth of the sealing ring limiting groove is smaller than the diameter of the sealing ring, the sealing ring is arranged in the sealing ring limiting groove in a sleeved mode, and the outer ring part of the sealing ring protrudes out of the sealing ring limiting groove; and the sealing ring limiting post and a battery cover plate are assembled, the other end of the connecting post penetrates through a corresponding mounting hole in the battery cover plate, and the sealing ring protruding out of the sealing ring limiting groove seals a gap between the connecting post and the mounting hole. The utility model aims to solve the problem of electrolyte leakage caused by rebounding of a sealing ring when a pole of a battery top cover is assembled with the sealing ring in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a sealing ring limiting pole, a battery top cover structure and a battery core. Background Art

[0002] With the continuous advancement of battery technology, battery safety and reliability have become critical factors that cannot be ignored during the design and manufacturing process. Throughout the battery life cycle, from the initial design stage to the final manufacturing stage, every detail is crucial. In particular, during the critical step of battery packaging, ensuring the seal between the battery terminal and the battery cover is not only fundamental to preventing battery short circuits and leakage, but also a key guarantee for improving overall battery performance.

[0003] However, a common problem has emerged in current battery packaging processes: during assembly of the terminal post and the sealing ring on the cover, the sealing ring often rebounds. This phenomenon can not only cause electrolyte leakage within the battery but can also cause a short circuit, severely impacting battery performance and lifespan. Therefore, developing a cover structure that effectively addresses this issue has become a pressing challenge for the battery manufacturing industry. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a sealing ring limiting pole, a battery top cover structure and a battery cell, so as to solve the problem that the pole and the sealing ring of the battery top cover in the prior art are assembled, and the sealing ring rebounds and causes electrolyte leakage.

[0005] In order to solve the above technical problems, the present invention provides a sealing ring limiting pole, wherein the sealing ring is arranged between the limiting pole and the battery cover, comprising:

[0006] A connecting seat and a connecting column with one end provided on the connecting seat, wherein a sealing ring limiting groove is provided at one end of the connecting column, the groove depth of the sealing ring limiting groove is less than the diameter of the sealing ring, the sealing ring is sleeved in the sealing ring limiting groove, and the outer ring portion of the sealing ring protrudes outside the sealing ring limiting groove;

[0007] The sealing ring limiting pole is assembled with the battery cover, and the other end of the connecting pole passes through the corresponding mounting hole on the battery cover. The sealing ring protruding outside the sealing ring limiting groove seals the gap between the connecting pole and the mounting hole.

[0008] In order to solve the above problems, the present invention further provides a battery top cover structure, comprising:

[0009] Positive electrode column and negative electrode column, the positive electrode column and negative electrode column adopt the above-mentioned sealing ring to limit the electrode column;

[0010] A sealing ring, wherein the sealing ring is sleeved in the sealing ring limiting groove;

[0011] The battery cover plate has the other end of the connecting post passing through the corresponding mounting hole on the battery cover plate, and the sealing ring seals the gap between the connecting post and the mounting hole.

[0012] As a more preferred embodiment, the battery top cover structure further includes a lower plastic part, and the connecting seat is provided on the lower plastic part.

[0013] As a more preferred method, the connecting seat is provided with an anti-foolproof structure, and the lower plastic part is provided with a mounting groove adapted to the anti-foolproof structure to prevent the positive electrode column and the negative electrode column from being installed upside down. Because the materials used to make the positive electrode column and the negative electrode column are different and cannot be mixed, the anti-foolproof structure can prevent the positive electrode column and the negative electrode column from being installed upside down, thereby avoiding the production of defective products and improving the yield rate.

[0014] As a more preferred embodiment, a first C-angle structure is provided at one end of the connecting column, and the sealing ring limiting groove is formed by the cross-section of the first C-angle structure and the end face of the connecting seat. In this way, when the sealing ring is set in the sealing ring limiting groove, one side of the sealing ring is completely limited by the end face of the connecting seat. When the sealing ring is released to the other side, the sealing ring moves along the cross-section, and the inner ring of the sealing ring expands. The cross-section it receives applies a reverse rebound force to the sealing ring, thereby achieving limitation on the other side of the sealing ring.

[0015] As a more preferred method, the inner ring of the sealing ring is provided with a second C-angle structure adapted to one end of the connecting column, and the sealing ring is sleeved in the sealing ring limiting groove, and the inner ring of the sealing ring is tightly attached to one end of the connecting column; in this way, the contact area of ​​the sealing ring on one end of the connecting column is increased, and the stability and sealing ability of the sealing ring are further improved.

[0016] As a more preferred method, the C-angle angle θ1 of the first C-angle structure at one end of the connecting column satisfies: 90°≥θ1≥30°. In this way, because the C-angle processing is convenient and quick, the production efficiency is increased, and at the same time, sufficient limiting force can be provided to achieve the limitation of the sealing ring.

[0017] As a more preferred embodiment, the battery top cover structure further comprises an upper plastic part, the upper plastic part is provided with a positioning hole, and the other end of the sealing ring limiting pole passes through the positioning hole and is connected to the upper plastic part.

[0018] As a more preferred embodiment, the other end of the connecting column is provided with a hobbing structure or a knurling structure along its circumference to increase the friction between the connecting column and the upper plastic part and to increase the anti-torque force between the connecting column and the upper plastic part.

[0019] In order to solve the above problems, the present invention further provides a battery cell, comprising: the above battery top cover structure.

[0020] As described above, the sealing ring limiting pole, battery top cover structure, and battery cell of the present invention have the following beneficial effects: when the sealing ring limiting pole of the present invention is assembled with the sealing ring and the top cover, the sealing ring is directly limited in position by the sealing ring limiting groove, and at the same time, the sealing ring protruding outside the sealing ring limiting groove seals the gap between the connecting column and the mounting hole, thereby achieving the limiting of the sealing ring without affecting the sealing function of the sealing ring and reducing the risk of the sealing ring rebounding and deflecting;

[0021] The battery top cover structure of the utility model adopts the above-mentioned sealing ring limiting pole to achieve the limitation of the sealing ring, making the sealing performance of the sealing ring more stable;

[0022] The battery cell of the present invention adopts the above-mentioned battery top cover structure, which improves the overall sealing ability, reduces the probability of electrolyte leakage in the battery cell, avoids the occurrence of battery short circuit, and thus improves the performance and service life of the battery;

[0023] The sealing ring limiting pole, battery top cover structure and battery cell of the utility model realize the limiting of the sealing ring without affecting the sealing function of the sealing ring through the structural design of the sealing ring limiting groove, thereby improving the sealing ability and safety, and solving the problem of electrolyte leakage caused by the rebound of the sealing ring in the assembly of the pole and the sealing ring of the battery top cover in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the sealing ring limiting pole of the utility model;

[0025] Figure 2 Shown is an exploded schematic diagram of the battery top cover of the present invention;

[0026] Figure 3 Shown is a schematic diagram of the battery top cover of the present invention.

[0027] Component number description

[0028] 1 Sealing ring limit pole

[0029] 11 Connecting seat

[0030] 111 fool-proof structure

[0031] 12 connecting columns

[0032] 121 first C angle structure

[0033] 122 gear hobbing structure

[0034] 13 Sealing ring limit groove

[0035] 2 sealing rings

[0036] 21 Second C-angle structure

[0037] 3Battery cover

[0038] 31 mounting holes

[0039] 4 lower plastic parts

[0040] 41 fixing holes

[0041] 5. Plastic parts

[0042] 51 positioning holes DETAILED DESCRIPTION

[0043] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0044] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model. Therefore, they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the efficacy and purpose that can be achieved by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is only limited by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial-related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," "holding," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0046] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0047] like Figures 1 to 3 As shown, the utility model provides a sealing ring limiting pole 1, wherein the sealing ring 2 is arranged between the limiting pole and the battery cover 3, including:

[0048] A connecting seat 11 and a connecting column 12 with one end disposed on the connecting seat 11. A sealing ring limiting groove 13 is provided at one end of the connecting column 12. The groove depth of the sealing ring limiting groove 13 is less than the diameter of the sealing ring 2. The sealing ring 2 is sleeved in the sealing ring limiting groove 13, and the outer ring portion of the sealing ring 2 protrudes outside the sealing ring limiting groove 13.

[0049] The sealing ring limiting pole 1 is assembled with the battery cover 3, and the other end of the connecting column 12 passes through the corresponding mounting hole 31 on the battery cover 3. The sealing ring 2 protruding outside the sealing ring limiting groove 13 seals the gap between the connecting column 12 and the mounting hole 31.

[0050] In order to better introduce the sealing ring limiting pole 1 of the present invention, it is now explained in combination with the following specific applications: when the sealing ring limiting pole 1 of the present invention is assembled with the sealing ring 2 and the top cover, the sealing ring 2 is directly limited by the sealing ring limiting groove 13, and at the same time, the sealing ring 2 protruding outside the sealing ring limiting groove 13 seals the gap between the connecting column 12 and the mounting hole 31, which not only realizes the limitation of the sealing ring 2, but also does not affect the sealing function of the sealing ring 2, and reduces the risk of the sealing ring 2 rebounding and deviating.

[0051] In order to solve the above problems, the present invention further provides a battery top cover structure, comprising:

[0052] Positive electrode column and negative electrode column, the positive electrode column and negative electrode column adopt the above-mentioned sealing ring limiting electrode column 1;

[0053] The sealing ring 2 is sleeved in the sealing ring limiting groove 13;

[0054] The battery cover plate 3 , the other end of the connecting column 12 passes through the corresponding mounting hole 31 on the battery cover plate 3 , and the sealing ring 2 seals the gap between the connecting column 12 and the mounting hole 31 .

[0055] In order to better introduce the battery top cover structure of the present invention, it is now explained in combination with the following specific applications: the battery top cover structure of the present invention adopts the above-mentioned sealing ring limiting pole 1 to achieve the limitation of the sealing ring 2, making the sealing performance of the sealing ring 2 more stable.

[0056] In some embodiments of the present invention, the positive electrode column is made of AL1060 material, and the negative electrode column is made of a combination of CuT2 and AL1060 materials.

[0057] In some embodiments of the present invention, Figure 2 as well as Figure 3 As shown, the battery top cover structure further includes a lower plastic part 4 , and the connecting seat 11 is arranged on the lower plastic part 4 .

[0058] In some embodiments of the present invention, Figure 1As shown, the connecting seat 11 is provided with an anti-foolproof structure 111, and the lower plastic part 4 is provided with a mounting groove adapted to the anti-foolproof structure 111. The mounting groove is provided at the bottom of the lower plastic part 4 to prevent the positive pole and the negative pole from being installed upside down. Because the materials used to make the positive pole and the negative pole are different and cannot be mixed, the anti-foolproof structure 111 prevents the positive pole and the negative pole from being installed upside down, which can avoid the production of defective products and improve the yield rate. More specifically, the mounting groove of the lower plastic part 4 is further provided with a fixing hole 41, and the connecting column 12 passes through the fixing hole 41 from the bottom of the lower plastic part 4, and the connecting seat 11 is snapped into the mounting groove. More specifically, the outer contour of the connecting seat 11 is a rectangular parallelepiped, the anti-fouling structure 111 is a corner of the rectangular parallelepiped, and the corner cutting positions of the positive pole and the negative pole are different; more specifically, in this embodiment, the end face of the connecting seat 11 is a square before the corner is cut, and its size is d1*d2, where 5≥d1≥3, 5≥d1≥3.

[0059] In some embodiments of the present invention, Figure 1 As shown, a first C-angle structure 121 is provided at one end of the connecting column 12, and the sealing ring limiting groove 13 is formed by the cross-section of the first C-angle structure 121 and the end face of the connecting seat 11. In this way, when the sealing ring 2 is set in the sealing ring limiting groove 13, one side of the sealing ring 2 is completely limited by the end face of the connecting seat 11. When the sealing ring 2 is released to the other side, the sealing ring 2 moves along the cross-section, and the inner ring of the sealing ring 2 expands. The cross-section received applies a reverse rebound force to the sealing ring 2, thereby limiting the other side of the sealing ring 2.

[0060] In some embodiments of the present invention, Figure 1 As shown, the C-angle angle θ1 of the first C-angle structure 121 at one end of the connecting column 12 satisfies: 90°≥θ1≥30°. In this way, because the C-angle processing is convenient and quick, the production efficiency is increased, and at the same time, sufficient limiting force can be provided to achieve the limitation of the sealing ring 2; further, in this embodiment, the length range of the chamfer is between 0 and 0.5 mm, which ensures that the sealing ring 2 can be limited while a part protrudes outside the sealing ring limiting groove 13 to achieve the sealing function.

[0061] In some embodiments of the present invention, Figure 2As shown, the inner ring of the sealing ring 2 is provided with a second C-angle structure 21 adapted to one end of the connecting column 12, and the sealing ring 2 is sleeved in the sealing ring limiting groove 13, and the inner ring of the sealing ring 2 is tightly attached to one end of the connecting column 12; in this way, the contact area of ​​the sealing ring 2 on one end of the connecting column 12 is increased, and the stability and sealing ability of the sealing ring 2 are further improved; further, in this embodiment, the C-angle angle θ2 of the second C-angle structure 21 satisfies: 90°≥θ2≥θ1≥45°.

[0062] In some embodiments of the present invention, Figure 2 as well as Figure 3 As shown, the battery top cover structure further includes an upper plastic part 5 , which is provided with a positioning hole 51 , and the other end of the sealing ring limiting pole 1 passes through the positioning hole 51 and is connected to the upper plastic part 5 .

[0063] In some embodiments of the present invention, Figure 1 As shown, the other end of the connecting column 12 is provided with a hobbing structure 122 or a knurling structure along its circumference to increase the friction between the connecting column 12 and the upper plastic part 5 and increase the anti-torque force between the connecting column 12 and the upper plastic part 5.

[0064] In order to solve the above problems, the present invention further provides a battery cell, comprising: the above battery top cover structure.

[0065] In order to better introduce the battery cell of the present invention, its beneficial effects are now illustrated in combination with the following specific applications: the battery cell of the present invention adopts the above-mentioned battery top cover structure, which improves the overall sealing ability, reduces the probability of electrolyte leakage in the battery cell, avoids the occurrence of battery short circuit, and thus improves the performance and service life of the battery; it can be seen that the sealing ring limiting pole, battery top cover structure and battery cell of the present invention, through the structural design of the sealing ring limiting groove 13, not only realizes the limitation of the sealing ring 2, but also does not affect the sealing function of the sealing ring 2, improves the sealing ability and safety, and solves the problem of the assembly of the pole and the sealing ring 2 of the battery top cover in the prior art, and the rebound of the sealing ring 2 causing electrolyte leakage.

[0066] In summary, the sealing ring limiting pole, battery top cover structure and battery cell of the present invention have the following advantages:

[0067] 1. Effective limit: The design of the sealing ring limit groove 13 realizes effective limit of the sealing ring 2 to prevent the sealing ring 2 from rebounding and deviating.

[0068] 2. Enhanced sealing performance: The outwardly protruding sealing ring 2 can seal the gap between the connecting column 12 and the mounting hole 31, thereby enhancing the overall sealing performance.

[0069] 3. Simplified assembly: The design of the sealing ring limiting terminal 1 simplifies the assembly process of the battery top cover and improves production efficiency.

[0070] 4. Improved stability: The design of the first C-angle structure 121 and the second C-angle structure 21 increases the contact area between the sealing ring 2 and the connecting column 12, thereby improving the stability of the sealing ring 2.

[0071] 5. Preventing material mixing: The design of the fool-proof structure 111 and the installation slot prevents the positive and negative poles from being installed in reverse, thereby improving product yield.

[0072] 6. Optimize material selection: The material selection of the positive and negative poles takes into account performance and cost, improving the performance of the battery cell.

[0073] 7. Prevent electrolyte leakage: By improving the sealing ability, the probability of electrolyte leakage in the battery cell is reduced, avoiding the occurrence of battery short circuit.

[0074] 8. Improve battery performance and life: The overall structural design reduces the risk of leakage and improves battery performance and service life.

[0075] 9. Easy to produce and process: C-angle processing method improves production efficiency and provides sufficient limiting force.

[0076] 10. Increased anti-torque force: The hobbing structure 122 or knurled structure of the connecting column 12 increases the friction between the connecting column 12 and the upper plastic part 5, thereby improving the anti-torque force.

[0077] The sealing ring limiting pole 1 design of this patent effectively achieves the limitation of the sealing ring 2 and enhances the sealing of the battery top cover through innovative structural design. This design not only simplifies the assembly process and improves production efficiency, but also improves the sealing performance of the sealing ring 2 by increasing the contact area and stability. In addition, the performance and service life of the battery are improved by optimizing material selection and preventing electrolyte leakage. The design of the anti-fool structure 111 avoids the reverse installation of the positive and negative poles and improves the product yield. Overall, the sealing ring limiting pole, battery top cover structure and battery cell design of this patent solve the assembly problem of the pole and sealing ring 2 of the battery top cover in the prior art through its unique structure and material selection, providing a safer and more reliable solution for battery manufacturing.

[0078] Therefore, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0079] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A sealing ring limiting pole (1), wherein the sealing ring (2) is arranged between the limiting pole and the battery cover (3), characterized in that: include: A connecting seat (11) and a connecting column (12) with one end arranged on the connecting seat (11); a sealing ring limiting groove (13) is provided at one end of the connecting column (12); the groove depth of the sealing ring limiting groove (13) is smaller than the diameter of the sealing ring (2); the sealing ring (2) is sleeved in the sealing ring limiting groove (13); and the outer ring portion of the sealing ring (2) protrudes outside the sealing ring limiting groove (13); The sealing ring limiting pole (1) is assembled with the battery cover (3), the other end of the connecting column (12) passes through the corresponding mounting hole (31) on the battery cover (3), and the sealing ring (2) protruding outside the sealing ring limiting groove (13) seals the gap between the connecting column (12) and the mounting hole (31).

2. A battery top cover structure, characterized in that: include: A positive electrode column and a negative electrode column, wherein the positive electrode column and the negative electrode column adopt the sealing ring limiting electrode column (1) as claimed in claim 1; A sealing ring (2), wherein the sealing ring (2) is sleeved in the sealing ring limiting groove (13); The battery cover (3) has the other end of the connecting column (12) passing through the corresponding mounting hole (31) on the battery cover (3), and the sealing ring (2) seals the gap between the connecting column (12) and the mounting hole (31).

3. The battery top cover structure according to claim 2, characterized in that: The battery top cover structure further comprises a lower plastic part (4), and the connecting seat (11) is arranged on the lower plastic part (4).

4. The battery top cover structure according to claim 3, characterized in that: The connecting seat (11) is provided with an anti-mistake structure (111), and the lower plastic part (4) is provided with a mounting groove adapted to the anti-mistake structure (111) to prevent the positive pole and the negative pole from being installed upside down.

5. The battery top cover structure according to claim 2, characterized in that: One end of the connecting column (12) is provided with a first C-angle structure (121), and the sealing ring limiting groove (13) is formed by the section of the first C-angle structure (121) and the end face of the connecting seat (11).

6. The battery top cover structure according to claim 5, characterized in that: The C-angle angle θ1 of the first C-angle structure (121) at one end of the connecting column (12) satisfies the following: 90°≥θ1≥30°.

7. The battery top cover structure according to claim 5, characterized in that: The inner ring of the sealing ring (2) is provided with a second C-angle structure (21) adapted to one end of the connecting column (12); the sealing ring (2) is sleeved in the sealing ring limiting groove (13); the inner ring of the sealing ring (2) is in close contact with one end of the connecting column (12).

8. The battery top cover structure according to claim 2, characterized in that: The battery top cover structure further comprises an upper plastic part (5), wherein a positioning hole (51) is provided on the upper plastic part (5), and the other end of the sealing ring limiting pole (1) passes through the positioning hole (51) and is connected to the upper plastic part (5).

9. The battery top cover structure according to claim 8, characterized in that: The other end of the connecting column (12) is provided with a hobbing structure (122) or a knurling structure along its circumference to increase the friction between the connecting column (12) and the upper plastic part (5).

10. A battery cell, characterized in that: include: The battery top cover structure according to any one of claims 2 to 9.

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