Antiskid pole, top cover structure and battery cell

Abstract

The utility model provides an anti-skid pole, a top cover structure and a battery cell, the anti-skid pole is used for being assembled with a cover plate, the cover plate is provided with a mounting hole, the anti-skid pole comprises a connecting seat and a connecting column, one end of the connecting column is arranged on the connecting seat, and the connecting column is provided with a limiting bulge; the edge of the mounting hole of the cover plate is provided with a limiting groove matched with the limiting protrusion, the other end of the connecting column penetrates through the mounting hole, the limiting protrusion is clamped into the limiting groove at the same time, and axial rotation of the connecting column is limited through the cover plate; according to the anti-skid pole, the top cover structure and the battery cell, the limiting bulge on the pole is matched with the limiting groove in the cover plate, so that the torsion stopping capability of the pole is ensured, the structural safety of the battery cell is improved, the service life of the battery cell is prolonged, and the problem that the torsion stopping capability of the pole is easy to lose efficacy due to the fact that a top cover increases the torsion stopping capability by utilizing friction force in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cores, in particular to an anti-slip pole, a top cover structure and a battery core. Background Art

[0002] With the booming new energy industry, battery safety, as a core energy component, is gaining increasing attention. The battery cover structure is a crucial component of battery packaging, ensuring not only a stable connection between the battery terminal and the cover, but also providing a sufficient seal to prevent external contaminants from entering the battery.

[0003] During battery use, the battery terminal may shift or rotate due to vibration, impact, or other external forces, resulting in unstable connections or reduced sealing performance. During battery use, the terminal needs to be able to withstand the forces and pressures of the external environment while not deforming or breaking during the battery's charge and discharge process. Torsion prevention refers to the action of preventing the terminal from twisting. In battery design and testing, the torsion test of the terminal is an important step, as it can evaluate the performance and life of the terminal when subjected to torsional forces. For example, the torsion test of the battery cell terminal requires the terminal to be tested for push-pull force and torsion in the XYZ directions to ensure the performance of the terminal under the set torque.

[0004] At present, there is a lack of anti-twist measures between the cover plate and the pole. Generally, the anti-twist purpose is achieved by increasing the contact area between the upper plastic part and the pole or the aluminum cover plate to increase friction. However, this anti-twist structure is prone to failure during use, which brings great safety risks to the use of the battery. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a non-slip pole, a top cover structure and a battery cell to solve the problem in the prior art that the top cover uses friction to increase the anti-torsion ability of the pole, which is prone to failure.

[0006] In order to solve the above technical problems, the present invention provides an anti-slip pole for assembling with a cover plate, wherein the cover plate is provided with a mounting hole, comprising:

[0007] A connecting seat and a connecting post with one end arranged on the connecting seat, wherein a limiting protrusion is provided on the connecting post;

[0008] The edge of the mounting hole of the cover plate is provided with a limiting groove adapted to the limiting protrusion. The other end of the connecting column is passed through the mounting hole, and the limiting protrusion is simultaneously inserted into the limiting groove, and the cover plate is used to limit the axial rotation of the connecting column.

[0009] As a more preferred method, the outer contour of the connecting seat is a cylinder. The cylindrical structure provides better structural stability because it can evenly disperse force and reduce stress concentration; at the same time, it is easier to manufacture on a large scale through processes such as stamping, which helps to improve production efficiency and reduce costs; and it has a better contact area with the tab, which helps to improve the reliability of the electrical connection.

[0010] In order to solve the above problems, the present invention further provides a top cover structure, comprising:

[0011] The aforementioned anti-slip pole;

[0012] A cover plate is provided with a mounting hole, and a limiting groove adapted to the limiting protrusion is provided at the edge of the mounting hole. The other end of the connecting column is passed through the mounting hole, and the limiting protrusion is simultaneously inserted into the limiting groove, and the cover plate is used to limit the axial rotation of the connecting column.

[0013] As a more preferred embodiment, the top cover structure also includes a sealing ring, which is provided with an avoidance groove adapted to the limiting protrusion. The sealing ring is sleeved on the connecting column and arranged between the connecting seat cover plates to seal the gap between the connecting column and the mounting hole.

[0014] As a more preferred method, a plurality of limiting protrusions are provided on the connecting column, and a plurality of limiting grooves adapted to the limiting protrusions are provided on the edge of the mounting hole. The assembly of the plurality of limiting protrusions and the plurality of limiting grooves further enhances the limiting ability of the cover plate on the axial rotation of the connecting column and increases the anti-torque ability.

[0015] As a more preferred embodiment, the top cover structure further includes a lower plastic part, which is arranged below the cover plate. The lower plastic part is provided with a positioning hole aligned with the mounting hole, and the other end of the connecting column passes through the positioning hole and the mounting hole from the lower side of the lower plastic part.

[0016] As a more preferred embodiment, the size of the connecting seat is larger than the positioning hole, and when the lower plastic part is assembled in place, the end surface of the connecting seat abuts against the bottom of the lower plastic part.

[0017] As a more preferred method, a mounting groove adapted to the outer contour of the connecting seat is opened at the bottom of the lower plastic part. When the lower plastic part is assembled in place, the connecting seat is snapped into the mounting groove. The mounting groove facilitates the positioning of the connecting seat and improves the accuracy and efficiency of installation.

[0018] As a more preferred embodiment, the top cover structure further includes an upper plastic part, which is arranged on the upper side of the cover plate. A fixing hole aligned with the mounting hole is provided on the upper plastic part. The other end of the connecting column passes through the fixing hole and contacts the inner wall of the fixing hole. The upper plastic part utilizes the friction between the fixing hole and the connecting column to improve the anti-torque ability of the connecting column.

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

[0020] As described above, the anti-slip pole, top cover structure, and battery cell of the present invention have the following beneficial effects: when the anti-slip pole of the present invention is used, the other end of the connecting pole is passed through the mounting hole, and the limiting protrusion is simultaneously engaged with the limiting groove, and the cover plate is used to limit the axial rotation of the connecting pole, thereby improving the anti-torque capacity of the pole;

[0021] The top cover structure of the present invention includes the above-mentioned anti-slip pole and a cover plate adapted therewith. Through the physical limitation of the cover plate, the pole can stably maintain sufficient anti-torsion capacity for a long time.

[0022] The battery cell of the present invention adopts the above-mentioned top cover structure, and utilizes the physical limit between the cover plate and the pole to ensure the anti-torsion ability of the pole, thereby improving the structural safety and service life of the battery cell;

[0023] The anti-slip pole, top cover structure and battery cell of the present invention ensure the anti-torque ability of the pole by cooperating with the limiting protrusion on the pole and the limiting groove on the cover plate, thereby improving the structural safety and service life of the battery cell, and solving the problem in the prior art that the top cover uses friction to increase the anti-torque ability of the pole, which is prone to failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the anti-slip pole of the utility model;

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

[0026] Figure 3 Shown is a schematic diagram of the connection between the anti-slip pole and the cover plate of the utility model.

[0027] Component number description

[0028] 1 Anti-slip pole

[0029] 11 Connector

[0030] 12 Connecting column

[0031] 121 limit protrusion

[0032] 2 Cover

[0033] 21 mounting holes

[0034] 211 limiting groove

[0035] 4 Lower plastic parts

[0036] 41 positioning holes

[0037] 5. Plastic parts

[0038] 51 fixing holes DETAILED DESCRIPTION

[0039] 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.

[0040] 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 limited only 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.

[0041] 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.

[0042] 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.

[0043] like Figures 1 to 3 As shown, the present invention provides an anti-slip pole 1 for assembling with a cover plate 2, wherein the cover plate 2 is provided with a mounting hole 21, comprising:

[0044] A connecting seat 11 and a connecting post 12 with one end disposed on the connecting seat 11, wherein a limiting protrusion 121 is provided on the connecting post 12;

[0045] The edge of the mounting hole 21 of the cover plate 2 is provided with a limiting groove 211 adapted to the limiting protrusion 121. The other end of the connecting column 12 is passed through the mounting hole 21, and the limiting protrusion 121 is simultaneously inserted into the limiting groove 211, and the cover plate 2 is used to limit the axial rotation of the connecting column 12.

[0046] In order to better introduce the anti-slip pole 1 of the present invention, its beneficial effects are now illustrated in combination with the following specific applications: When the anti-slip pole 1 of the present invention is in use, the other end of the connecting column 12 is passed through the mounting hole 21, and at the same time, the limiting protrusion 121 is snapped into the limiting groove 211, and the cover plate 2 is used to limit the axial rotation of the connecting column 12, thereby improving the anti-torque ability of the pole.

[0047] In some embodiments of the present invention, Figure 1 As shown, the outer contour of the connecting seat 11 is a cylinder. The cylindrical structure provides better structural stability because it can evenly disperse force and reduce stress concentration. At the same time, it is easier to manufacture on a large scale through processes such as stamping, which helps to improve production efficiency and reduce costs. It also has a better contact area with the tab, which helps to improve the reliability of the electrical connection.

[0048] In some embodiments of the present invention, Figure 2As shown, in order to facilitate the installation of the connecting column 12 , a gap is provided between the connecting column 12 and the mounting hole 21 , and the diameter of the connecting column 12 is smaller than the aperture of the mounting hole 21 .

[0049] In order to solve the above problems, the present invention further provides a top cover structure, comprising:

[0050] The above-mentioned anti-slip pole 1;

[0051] The cover plate 2 is provided with a mounting hole 21, and the edge of the mounting hole 21 is provided with a limiting groove 211 adapted to the limiting protrusion 121. The other end of the connecting column 12 is passed through the mounting hole 21, and the limiting protrusion 121 is simultaneously inserted into the limiting groove 211, and the cover plate 2 is used to limit the axial rotation of the connecting column 12.

[0052] In order to better introduce the top cover structure of the present invention, its beneficial effects are now illustrated in combination with the following specific applications: the top cover structure of the present invention includes the above-mentioned anti-slip pole 1 and a cover plate 2 adapted thereto. Through the physical limitation of the cover plate 2, the pole can stably maintain sufficient anti-torque capacity for a long time.

[0053] In some embodiments of the present invention, the top cover structure includes two anti-slip poles 1, which serve as the positive electrode and the negative electrode of the battery cell respectively.

[0054] In some embodiments of the present invention, the top cover structure also includes a sealing ring, which is provided with an avoidance groove adapted to the limiting protrusion 121. The sealing ring is sleeved on the connecting column 12 and is arranged between the connecting seat 11 and the cover plate 2 to seal the gap between the connecting column 12 and the mounting hole 21; as another embodiment, the gap between the connecting column 12 and the mounting hole 21 is not sealed by a sealing ring, and thermoplastic plastic or thermosetting plastic is filled between the connecting column 12 and the mounting hole 21 through an injection molding process, including but not limited to ABS, PC, PA, PE, PP, PVC, etc.

[0055] In some embodiments of the present invention, Figure 1 、 Figure 2 as well as Figure 3As shown, the connecting column 12 is provided with a plurality of limiting protrusions 121, and the edge of the mounting hole 21 is provided with a plurality of limiting grooves 211 adapted to the limiting protrusions 121. The assembly of the plurality of limiting protrusions 121 and the plurality of limiting grooves 211 further enhances the limiting ability of the cover plate 2 on the axial rotation of the connecting column 12 and increases the anti-torque ability; more specifically, the number of the limiting protrusions 121 and the corresponding limiting grooves 211 is three, and the protruding height of the limiting protrusion 121 protruding from the side surface of the connecting column 12 is between 0 and 1 mm. Correspondingly, the depth of the limiting groove 211 is greater than the protruding height of the limiting protrusion 121, and its range is also guaranteed to be between 0 and 1 mm.

[0056] In some embodiments of the present invention, the top cover structure also includes a lower plastic part 4, which is arranged below the cover plate 2. The lower plastic part 4 is provided with a positioning hole 41 aligned with the mounting hole 21, and the other end of the connecting column 12 passes through the positioning hole 41 and the mounting hole 21 from the lower side of the lower plastic part 4.

[0057] In some embodiments of the present invention, the size of the connecting seat 11 is larger than the positioning hole 41 , and when the lower plastic part 4 is assembled in place, the end surface of the connecting seat 11 abuts against the bottom of the lower plastic part 4 .

[0058] In some embodiments of the present invention, a mounting groove that matches the outer contour of the connecting seat 11 is provided at the bottom of the lower plastic part 4. When the lower plastic part 4 is assembled into place, the connecting seat 11 is snapped into the mounting groove. The mounting groove facilitates the positioning of the connecting seat 11 and improves the accuracy and efficiency of installation.

[0059] In some embodiments of the present invention, the top cover structure also includes an upper plastic part 5, which is arranged on the upper side of the cover plate 2. A fixing hole 51 aligned with the mounting hole 21 is provided on the upper plastic part 5. The other end of the connecting column 12 passes through the fixing hole 51 and contacts the inner wall of the fixing hole 51. The upper plastic part 5 uses the friction between the fixing hole 51 and the connecting column 12 to improve the anti-torque ability of the connecting column 12.

[0060] In order to solve the above problems, the present invention further provides a battery cell, comprising: the above-mentioned top cover structure.

[0061] In order to better introduce the battery cell of the utility model, its beneficial effects are now explained in combination with the following specific applications:

[0062] The battery cell of the present invention adopts the above-mentioned top cover structure, and utilizes the physical limit between the cover plate 2 and the pole to ensure the anti-torsion ability of the pole, thereby improving the structural safety and service life of the battery cell; it can be seen that the anti-slip pole, top cover structure and battery cell of the present invention, through the mutual cooperation of the limiting protrusion 121 on the pole and the limiting groove 211 on the cover plate 2, ensure the anti-torsion ability of the pole, improve the structural safety and service life of the battery cell, and solve the problem in the prior art that the top cover uses friction to increase the anti-torsion ability of the pole, which is easy to fail.

[0063] In some embodiments of the present invention, the battery cell further comprises:

[0064] The outer shell protects the internal electrochemical components, and the top cover structure is used to cover the outer shell;

[0065] The positive electrode material and the negative electrode material are arranged in the shell. They are the core components of the battery for storing energy. The positive and negative electrode materials are connected to the corresponding positive and negative electrode columns;

[0066] The diaphragm is arranged in the housing. The diaphragm is located between the positive electrode material and the negative electrode material. Its function is to prevent the positive and negative electrodes from directly contacting each other and causing a short circuit, while allowing lithium ions to pass through to complete the charging and discharging process;

[0067] The electrolyte disposed in the housing is an ion transport medium inside the battery, usually composed of a lithium salt and an organic solvent, and provides a migration channel for lithium ions from the positive electrode to the negative electrode or from the negative electrode to the positive electrode.

[0068] In summary, the anti-slip pole, top cover structure, and battery cell of the present invention have the following advantages:

[0069] 1. Improve the anti-torque capability: Through the cooperation between the limiting protrusion 121 and the limiting groove 211, the axial rotation of the connecting column 12 is effectively limited, thereby enhancing the anti-torque capability of the pole.

[0070] 2. Structural stability: The cylindrical structure of the connecting seat 11 provides good stability and helps to evenly distribute the force.

[0071] 3. Production efficiency: The cylindrical structure facilitates large-scale manufacturing through processes such as stamping, which improves production efficiency and reduces costs.

[0072] 4. Gap design: The gap design between the connecting column 12 and the mounting hole 21 facilitates installation while ensuring that the diameter of the connecting column 12 is slightly smaller than the aperture of the mounting hole 21.

[0073] 5. Double limit: The top cover structure includes two anti-slip poles 1, which are used for the positive and negative poles of the battery cell respectively, providing double physical limit.

[0074] 6. Sealing performance: The gap between the connecting column 12 and the mounting hole 21 is effectively sealed by a sealing ring or plastic filling to prevent leakage of the electrolyte.

[0075] 7. Enhanced assembly limit: The design of multiple limit protrusions 121 and grooves further improves the assembly stability and axial rotation limit capability.

[0076] 8. Positioning accuracy: The size design of the positioning hole 41 on the lower plastic part 4 and the connecting seat 11 improves the positioning accuracy and efficiency of assembly.

[0077] 9. Structural safety: The coordination between the top cover structure and the battery cell enhances the structural safety and service life of the battery cell.

[0078] 10. Comprehensive performance of battery cells: The core components inside the battery cells, such as the positive electrode material, negative electrode material, diaphragm and electrolyte, are effectively protected and their functions are fully utilized.

[0079] The anti-slip pole 1 of this patent achieves effective restriction on the axial rotation of the connecting column 12 through its innovative design, thereby improving the anti-torsion ability of the battery pole. The connecting seat 11 with a cylindrical structure not only provides good stability, but also facilitates large-scale production and reduces costs. The introduction of gap design and a double limit mechanism further enhances the stability and sealing performance of the assembly. In addition, through cooperation with the top cover structure, the anti-slip pole 1 of this patent significantly improves the structural safety and service life of the battery cell. Overall, the anti-slip pole, top cover structure and battery cell design of this patent, through its unique structure and assembly mechanism, solves the problem in the prior art that the top cover uses friction to increase the anti-torsion ability of the pole, which is prone to failure, and provides a safer and more reliable solution for battery manufacturing. Therefore, the utility model effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0080] 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 non-slip pole (1) for assembling with a cover plate (2), wherein the cover plate (2) is provided with a mounting hole (21), characterized in that: include: A connecting seat (11) and a connecting post (12) with one end arranged on the connecting seat (11), wherein a limiting protrusion (121) is provided on the connecting post (12); A limiting groove (211) adapted to the limiting protrusion (121) is provided on the edge of the mounting hole (21) of the cover plate (2). The other end of the connecting column (12) is passed through the mounting hole (21), and the limiting protrusion (121) is simultaneously inserted into the limiting groove (211). The cover plate (2) is used to limit the axial rotation of the connecting column (12).

2. The anti-slip pole (1) according to claim 1, characterized in that: The outer contour of the connecting seat (11) is a cylinder.

3. A top cover structure, characterized in that: include: The anti-slip pole (1) according to any one of claims 1 to 2; A cover plate (2) is provided with a mounting hole (21), and a limiting groove (211) adapted to the limiting protrusion (121) is provided at the edge of the mounting hole (21). The other end of the connecting column (12) is passed through the mounting hole (21), and the limiting protrusion (121) is simultaneously inserted into the limiting groove (211), and the cover plate (2) is used to limit the axial rotation of the connecting column (12).

4. The top cover structure according to claim 3, characterized in that: The top cover structure also includes a sealing ring, which is provided with an avoidance groove adapted to the limiting protrusion (121). The sealing ring is sleeved on the connecting column (12) and arranged between the connecting seat (11) and the cover plate (2) to seal the gap between the connecting column (12) and the mounting hole (21).

5. The top cover structure according to claim 3, characterized in that: A plurality of limiting protrusions (121) are provided on the connecting column (12), and a plurality of limiting grooves (211) adapted to the limiting protrusions (121) are provided on the edge of the mounting hole (21).

6. The top cover structure according to claim 3, characterized in that: The top cover structure further comprises a lower plastic part (4), the lower plastic part (4) being arranged below the cover plate (2), the lower plastic part (4) being provided with a positioning hole (41) aligned with the mounting hole (21), and the other end of the connecting column (12) passing through the positioning hole (41) and the mounting hole (21) from the lower side of the lower plastic part (4).

7. The top cover structure according to claim 6, characterized in that: The size of the connecting seat (11) is larger than the positioning hole (41), and when the lower plastic part (4) is assembled in place, the end surface of the connecting seat (11) abuts against the bottom of the lower plastic part (4).

8. The top cover structure according to claim 7, characterized in that: The bottom of the lower plastic part (4) is provided with a mounting groove adapted to the outer contour of the connecting seat (11); when the lower plastic part (4) is assembled in place, the connecting seat (11) is snapped into the mounting groove.

9. The top cover structure according to claim 3, characterized in that: The top cover structure further comprises an upper plastic part (5), the upper plastic part (5) being arranged on the upper side of the cover plate (2), the upper plastic part (5) being provided with a fixing hole (51) aligned with the mounting hole (21), the other end of the connecting column (12) passing through the fixing hole (51) and contacting the inner wall of the fixing hole (51).

10. A battery cell, characterized in that: include: The top cover structure according to any one of claims 3 to 9.

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