Edge-rolled battery cover plate and single battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a rolloff battery cover plate and a single battery, the rolloff battery cover plate comprises a cover plate body and at least one electrode assembly, the cover plate body is provided with at least one mounting groove, the groove bottom of the mounting groove is provided with a through hole, and the cover plate body is also provided with a rolloff surrounding the mounting groove; the electrode assembly comprises a pole and a first rubber coating part, the peripheral wall of the pole is coated with the first rubber coating part, the pole penetrates through the through hole, and the first rubber coating part is installed in the installation groove and abuts against the rolled edge; at least one limiting protrusion is arranged on the bottom wall of the first rubber coating piece in the circumferential direction at intervals, and limiting clamping grooves connected with the limiting protrusions in a one-to-one correspondence and matched mode are formed in the groove bottom of the installation groove. At least one limiting groove is formed in the outer peripheral wall of the first rubber coating piece at intervals in the circumferential direction of the first rubber coating piece, at least one protruding part is arranged on the inner peripheral wall of the rolled edge at intervals in the circumferential direction of the rolled edge, and the limiting grooves and the protruding parts are connected in a one-to-one correspondence and matched mode, so that the anti-rotation effect on the pole is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a rolled edge battery cover and a single battery. Background Art

[0002] As an important accessory in a single cell, the battery cover can not only seal the internal and external environments by welding with the shell, but also connect the internal and external circuits to transmit the internal current of the battery to the outside through the top cover pole, thus playing a guiding role. At present, the rolled battery cover is mainly installed on the cover body after the outer side of the pole is covered with rubber. However, since the shape of the pole of the rolled battery cover is circular, the pole will rotate during use. Therefore, anti-rotation of the pole is an important issue for the battery cover. At present, an installation plane is usually processed on the periphery of the pole, so that when the pole is covered with rubber, the rubber-coated part completely covers the outer periphery of the pole and is connected to the installation plane in a limiting manner to achieve anti-rotation between the pole and the rubber-coated part.

[0003] The above technical solution only considers the anti-rotation between the pole and the rubber-coated part. However, there is also relative rotation between the rubber-coated part and the cover body, which drives the pole to rotate. Therefore, the anti-rotation between the rubber-coated part and the cover body is also particularly important. The existing anti-rotation structure between the rubber-coated part and the cover body often adopts the method of processing a limit groove on the cover body and processing a limit protrusion on the rubber-coated part to achieve a limit connection between the two. However, since the thickness of the rolled edge structure of the cover body is not large, if the limit groove is processed, the strength at the limit groove is weak, resulting in poor anti-rotation effect.

[0004] Therefore, there is an urgent need for a rolled edge battery cover and a single battery to solve the above technical problems. Utility Model Content

[0005] One purpose of the utility model is to provide a rolled edge battery cover, which can improve the matching strength between the cover body and the first rubber-coated component, and perform multiple position limits on the two to improve the anti-rotation effect of the pole.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Rolled edge battery cover, including:

[0008] The cover body is provided with at least one mounting groove, the bottom of the mounting groove is provided with a through hole, and the cover body is also provided with a rolled edge surrounding the mounting groove;

[0009] At least one electrode assembly, the electrode assembly comprising a pole and a first rubber-coated member, the first rubber-coated member is coated on the outer peripheral wall of the pole, the pole is passed through the through hole, and the first rubber-coated member is installed in the installation groove and abuts against the rolled edge;

[0010] The bottom wall of the first rubber-encapsulated component is provided with at least one limiting protrusion at intervals along its circumference, and the bottom of the installation groove is provided with at least one limiting slot at intervals along its circumference, and the limiting protrusions and the limiting slots are matched and connected in a one-to-one correspondence;

[0011] The outer peripheral wall of the first rubber-coated component is provided with at least one limiting groove at intervals along its own circumference, and the inner peripheral wall of the rolled edge is provided with at least one protrusion at intervals along its own circumference, and the limiting groove and the protrusion are matched and connected in a one-to-one correspondence.

[0012] Optionally, the above-mentioned limiting protrusions and the above-mentioned limiting grooves are arranged alternately at intervals, and the above-mentioned limiting grooves and the above-mentioned protrusions are arranged alternately at intervals.

[0013] Optionally, the limiting protrusion is in the shape of an arc, a circle, a cross or a polygon.

[0014] Optionally, at least one limiting cut surface is provided on the outer periphery of the pole, and at least one limiting convex surface is provided on the first rubber-coated component, and the limiting cut surface is matched and connected with the limiting convex surface in a one-to-one correspondence.

[0015] Optionally, at least one limiting hole is provided on the pole, and at least one limiting column is provided on the first rubber-coated component, and the limiting columns and the limiting holes are connected in a one-to-one corresponding snap-fit ​​connection.

[0016] Optionally, the first rubber-coated part includes a covering structure and at least one abutment portion, the pole includes a first outer ring portion and a second outer ring portion, the outer diameter of the first outer ring portion is greater than the outer diameter of the second outer ring portion, the covering structure is arranged between the first outer ring portion and the rolled edge, the abutment portion abuts between the covering structure and the second outer ring portion, and the limiting column is arranged on the abutment portion.

[0017] Optionally, one of the abutting portion and the second outer ring portion is provided with a rotation-stopping portion, and the other is provided with a rotation-stopping groove, and the rotation-stopping portion and the rotation-stopping groove are matched and connected in a one-to-one correspondence.

[0018] Optionally, the electrode assembly further comprises a sealing member, wherein the sealing member is disposed between the electrode column and the hole wall of the through hole; and / or,

[0019] The electrode assembly further includes a second rubber coating member, which covers the outer periphery of the rolled edge and the side of the pole extending out of the rolled edge.

[0020] Optionally, an insulating member is further included, wherein the insulating member is arranged on a side of the cover body away from the mounting groove, and the pole is passed through the insulating member.

[0021] Another object of the utility model is to provide a single cell, which can improve the matching strength between the cover plate body and the first rubber package, and perform multiple position limits on the two to improve the anti-rotation effect of the pole.

[0022] To achieve this purpose, the utility model adopts the following technical solutions:

[0023] A single battery comprises a shell, a battery cell and the above-mentioned rolled-edge battery cover plate, wherein the above-mentioned battery cell is arranged in the above-mentioned shell, and the above-mentioned rolled-edge battery cover plate is sealed and connected to the opening of the above-mentioned shell.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a rolled edge battery cover and a single cell battery, wherein correspondingly matched limiting protrusions and limiting slots are arranged between the first rubber-coated part and the bottom of the installation slot of the cover body to achieve an anti-rotation effect between the two; at the same time, correspondingly matched limiting slots and protrusions are arranged between the first rubber-coated part and the rolled edge to further achieve an anti-rotation effect between the two. The above-mentioned double anti-rotation structure is arranged to further improve the anti-rotation effect between the first rubber-coated part and the cover body; and the protrusion is arranged on the rolled edge, which also enhances the connection strength between the rolled edge and the first rubber-coated part, effectively improving the anti-rotation effect of the rolled edge on the first rubber-coated part, making the anti-rotation effect between the first rubber-coated part and the cover body better, thereby improving the anti-rotation effect of the pole in the rolled edge battery cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an axonometric view of a rolled edge battery cover provided by a specific embodiment of the utility model;

[0027] Figure 2 It is a top view of a rolled edge battery cover provided by a specific embodiment of the utility model;

[0028] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0029] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0030] Figure 5 It is an exploded view of the installation state of the electrode assembly from a viewing angle provided by a specific embodiment of the utility model;

[0031] Figure 6 It is an exploded view of the installation state of the electrode assembly from another perspective provided by a specific embodiment of the utility model.

[0032] In the figure:

[0033] 10. Cover plate body; 101. Through hole; 11. Mounting slot; 111. Limiting slot; 12. Piping; 121. Protrusion;

[0034] 20. electrode assembly; 21. pole; 211. first outer ring; 2111. limiting section; 2112. limiting hole; 212. second outer ring; 22. first rubber package; 221. limiting protrusion; 222. limiting groove; 223. limiting convex surface; 224. limiting column; 225. covering structure; 226. abutting part; 23. sealing member; 24. second rubber package;

[0035] 30. Insulating parts; 40. Explosion-proof valve. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Refer to the following Figures 1 to 6 The utility model introduces a rolled edge battery cover plate and a single battery.

[0041] Please refer to Figures 1 to 5 The present embodiment provides a rolled edge battery cover, which includes a cover body 10 and at least one electrode assembly 20. The cover body 10 is provided with at least one mounting groove 11, the bottom of the mounting groove 11 is provided with a through hole 101, and the cover body 10 is also provided with a rolled edge 12 surrounding the mounting groove 11; the electrode assembly 20 includes a pole 21 and a first rubber-wrapped component 22, the first rubber-wrapped component 22 is coated on the outer peripheral wall of the pole 21, the pole 21 is passed through the through hole 101, and the first rubber-wrapped component 22 is installed in the mounting groove 11 and abuts against the rolled edge 12. The bottom wall of the first rubber-wrapped component 22 is provided with at least one limiting protrusion 221 at intervals along its own circumference, and the bottom of the mounting groove 11 is provided with at least one limiting card slot 111 at intervals along its own circumference, and the limiting protrusion 221 and the limiting card slot 111 are matched and connected in a one-to-one correspondence to prevent the two from rotating relative to each other. The outer wall of the first rubber-coated part 22 is provided with at least one limiting groove 222 at intervals along its own circumference, and the inner wall of the rolled edge 12 is provided with at least one protrusion 121 at intervals along its own circumference. The limiting groove 222 and the protrusion 121 are matched and connected in a one-to-one manner, further preventing the two from rotating relative to each other.

[0042] In the rolled edge battery cover of this embodiment, a corresponding limiting protrusion 221 and a limiting slot 111 are provided between the first rubber-coated part 22 and the bottom of the mounting slot 11 of the cover body 10 to achieve an anti-rotation effect between the two; at the same time, a corresponding limiting slot 222 and a protrusion 121 are provided between the first rubber-coated part 22 and the rolled edge 12 to further achieve an anti-rotation effect between the two. The above-mentioned double anti-rotation structure is provided to further improve the anti-rotation effect between the first rubber-coated part 22 and the cover body 10; and the protrusion 121 is provided on the rolled edge 12, which also enhances the connection strength between the rolled edge 12 and the first rubber-coated part 22, effectively improving the anti-rotation effect of the rolled edge 12 on the first rubber-coated part 22, making the anti-rotation effect between the first rubber-coated part 22 and the cover body 10 better, thereby improving the anti-rotation effect of the pole 21 in the rolled edge battery cover.

[0043] It is understandable that the number of electrode assemblies 20 in the rolled battery cover plate can be one or two, and the design is adaptively designed according to the requirements of the single battery, which is not specifically limited here.

[0044] Furthermore, after the electrode assembly 20 is installed between the cover plate body 10 , the first rubber package 22 is crimped or riveted by the rolling edge 12 to achieve the limiting fixation of the electrode assembly 20 .

[0045] Optionally, the limiting protrusions 221 and the limiting grooves 222 are arranged alternately at intervals, and the limiting slots 111 and the protrusions 121 are arranged alternately at intervals. The alternating arrangement helps to evenly distribute the anti-rotation force of each structure, avoiding uneven anti-rotation force on the first rubber package 22.

[0046] Exemplarily, in this embodiment, two of each of the limiting protrusions 221, the limiting grooves 222, the limiting card slots 111 and the raised portions 121 are provided, and the two limiting protrusions 221 and the two limiting grooves 222 are alternately and equidistantly arranged on the first rubber-coated component 22, and the two limiting card slots 111 and the two raised portions 121 are alternately and equidistantly arranged on the first rubber-coated component 22, so as to achieve a uniform anti-rotation effect of the cover body 10 on the first rubber-coated component 22.

[0047] Optionally, the shape of the limiting protrusion 221 is an arc, a circle, a cross or a polygon, all of which can achieve the matching connection between the limiting protrusion 221 and the limiting slot 111.

[0048] For example, the limiting protrusion 221 in this embodiment is in the shape of an arc, and the limiting slot 111 is correspondingly set to be in the shape of an arc, which increases the connection area and connection strength between the two, so that the anti-rotation effect of the cooperation between the two is better. When in use, when a force is applied to either the first rubber package 22 or the cover body 10 that causes the two to rotate relative to each other, the arc-shaped limiting protrusion 221 abuts against the groove wall of the arc-shaped limiting slot 111 to resist the above-mentioned rotation force and prevent the two from rotating relative to each other.

[0049] Please refer to Figure 5 and Figure 6 In order to further achieve the anti-rotation effect of the pole 21, in some embodiments, at least one limiting cut surface 2111 is provided on the outer circumference of the pole 21, and at least one limiting convex surface 223 is provided on the first rubber-coated member 22. The limiting cut surface 2111 and the limiting convex surface 223 are matched and connected in a one-to-one correspondence, so that the anti-rotation effect between the first rubber-coated member 22 and the pole 21 can be achieved. Exemplarily, four limiting cut surfaces 2111 are equidistantly provided along the circumference of the pole 21, and four limiting convex surfaces 223 are equidistantly provided along the circumference of the first rubber-coated member 22, so that the first rubber-coated member 22 has a uniform anti-rotation effect on the pole 21.

[0050] In some embodiments, at least one limiting hole 2112 is provided on the pole 21, and at least one limiting column 224 is provided on the first rubber-coated part 22. The limiting column 224 and the limiting hole 2112 are connected in a one-to-one corresponding snap connection, which further improves the anti-rotation effect between the two. In combination with the above-mentioned embodiment, the double anti-rotation structure further improves the anti-rotation effect between the first rubber-coated part 22 and the pole 21. At the same time, the double anti-rotation structure between the first rubber-coated part 22 and the cover body 10 is connected, so that the anti-rotation ability of the pole 21 in the rolled battery cover is further improved.

[0051] In some embodiments, the first rubber-coated part 22 includes a coating structure 225 and at least one abutment portion 226, the pole 21 includes a first outer ring portion 211 and a second outer ring portion 212, the outer diameter of the first outer ring portion 211 is greater than the outer diameter of the second outer ring portion 212, the coating structure 225 is arranged between the first outer ring portion 211 and the rolled edge 12, the abutment portion 226 abuts between the coating structure 225 and the second outer ring portion 212, and the limiting column 224 is arranged on the abutment portion 226. In this arrangement, the abutment portion 226 is added, which not only can realize the anti-rotation effect of the limiting column 224 on the pole 21, but also ensures the insulation setting between the second outer ring portion 212 and the rolled edge 12, avoids the contact between the two, and improves the safety of the rolled edge battery cover.

[0052] Optionally, one of the abutting portion 226 and the second outer ring portion 212 is provided with a rotation-stopping portion, and the other is provided with a rotation-stopping groove. The rotation-stopping portion and the rotation-stopping groove are matched and connected in a one-to-one correspondence, which can further improve the anti-rotation effect of the first rubber coating 22 on the pole 21.

[0053] Please refer back to Figure 4 In some embodiments, the electrode assembly 20 further includes a seal 23, which is disposed between the pole 21 and the wall of the through hole 101, so as to achieve sealing when the pole 21 is passed through the cover body 10, thereby ensuring the sealing between the inside and outside of the single cell when the rolled battery cover is subsequently installed on the single cell.

[0054] In some embodiments, the electrode assembly 20 also includes a second rubber coating 24, which is coated on the outer periphery of the rolling edge 12 and the side of the pole 21 extending out of the rolling edge 12, that is, the second rubber coating 24 is coated on the side of the rolling edge 12 crimped to the electrode assembly 20, further improving the insulation protection of the pole 21, avoiding the problem of short circuit of the rolled battery cover caused by the external connection part being connected to the pole 21 and the rolling edge 12, thereby improving the safety of the rolled battery cover.

[0055] In some embodiments, the rolled battery cover also includes an insulating member 30, which is arranged on the side of the cover body 10 away from the mounting groove 11, and the pole 21 is passed through the insulating member 30 to achieve an insulation setting between the rolled battery cover and the battery cell in the shell of the single battery.

[0056] In some embodiments, the rolled edge battery cover further includes an explosion-proof valve 40 , which is disposed on the cover body 10 to provide explosion-proof pressure relief inside a single battery cell on which the rolled edge battery cover is installed.

[0057] This embodiment also provides a single battery, which includes a housing, a battery cell and a rolled edge battery cover plate as described in any of the above schemes, wherein the battery cell is arranged in the housing, and the rolled edge battery cover plate is sealed and connected to the opening of the housing. The single battery has all the beneficial effects of the above rolled edge battery cover plate, which will not be described in detail here.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Rolled edge battery cover, characterized in that: include: The cover plate body (10) is provided with at least one mounting groove (11), a through hole (101) is provided at the bottom of the mounting groove (11), and a rolled edge (12) surrounding the mounting groove (11) is also provided on the cover plate body (10); At least one electrode assembly (20), the electrode assembly (20) comprising a pole (21) and a first rubber coating (22), the first rubber coating (22) coating the outer peripheral wall of the pole (21), the pole (21) passing through the through hole (101), the first rubber coating (22) installed in the installation groove (11) and abutting against the rolled edge (12); The bottom wall of the first rubber-coated component (22) is provided with at least one limiting protrusion (221) at intervals along its circumference, and the bottom of the installation groove (11) is provided with at least one limiting groove (111) at intervals along its circumference, and the limiting protrusion (221) and the limiting groove (111) are matched and connected in a one-to-one corresponding manner; The outer peripheral wall of the first rubber-coated part (22) is provided with at least one limiting groove (222) at intervals along its own circumference, and the inner peripheral wall of the rolling edge (12) is provided with at least one protrusion (121) at intervals along its own circumference, and the limiting groove (222) and the protrusion (121) are matched and connected in a one-to-one corresponding manner.

2. The rolled edge battery cover according to claim 1, characterized in that: The limiting protrusions (221) and the limiting grooves (222) are arranged alternately and at intervals, and the limiting slots (111) and the protruding portions (121) are arranged alternately and at intervals.

3. The rolled edge battery cover according to claim 1, characterized in that: The limiting protrusion (221) is in the shape of an arc, a circle, a cross or a polygon.

4. The rolled edge battery cover according to claim 1, characterized in that: The outer periphery of the pole (21) is provided with at least one limiting cut surface (2111), the first rubber-coated component (22) is provided with at least one limiting convex surface (223), and the limiting cut surface (2111) is matched and connected with the limiting convex surface (223) in a one-to-one correspondence.

5. The rolled edge battery cover according to any one of claims 1 to 4, characterized in that: At least one limiting hole (2112) is provided on the pole (21), and at least one limiting column (224) is provided on the first rubber-coated component (22), and the limiting column (224) and the limiting hole (2112) are connected in a one-to-one corresponding snap-fit ​​manner.

6. The rolled edge battery cover according to claim 5, characterized in that: The first rubber-coated part (22) comprises a coating structure (225) and at least one abutment portion (226); the pole (21) comprises a first outer ring portion (211) and a second outer ring portion (212); the outer diameter of the first outer ring portion (211) is greater than the outer diameter of the second outer ring portion (212); the coating structure (225) is arranged between the first outer ring portion (211) and the rolled edge (12); the abutment portion (226) abuts between the coating structure (225) and the second outer ring portion (212); and the limiting column (224) is arranged on the abutment portion (226).

7. The rolled edge battery cover according to claim 6, characterized in that: One of the abutting portion (226) and the second outer ring portion (212) is provided with a rotation-stopping portion, and the other is provided with a rotation-stopping groove, and the rotation-stopping portion and the rotation-stopping groove are matched and connected in a one-to-one correspondence.

8. The rolled edge battery cover according to claim 1, characterized in that: The electrode assembly (20) further comprises a sealing member (23), wherein the sealing member (23) is arranged between the electrode column (21) and the hole wall of the through hole (101); and / or, The electrode assembly (20) further comprises a second rubber coating (24), wherein the second rubber coating (24) covers the outer periphery of the rolled edge (12) and a side of the pole (21) extending out of the rolled edge (12).

9. The rolled edge battery cover according to claim 1, characterized in that: It also comprises an insulating member (30), wherein the insulating member (30) is arranged on a side of the cover plate body (10) away from the mounting groove (11), and the pole (21) passes through the insulating member (30).

10. A single cell, characterized in that: It comprises a shell, a battery cell and a rolled-edge battery cover as described in any one of claims 1 to 9, wherein the battery cell is arranged in the shell, and the rolled-edge battery cover is sealed and connected to the opening of the shell.

Images