CN219575890U

CN219575890U - Top cap subassembly and have its battery

Info

Publication number: CN219575890U
Application number: CN202320429867.3U
Authority: CN
Inventors: 徐同力
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-08-22
Anticipated expiration: 2033-03-08

Abstract

The utility model discloses a top cap assembly and a battery with the same. The cover body is provided with a mounting hole; the pole includes first section and second section in proper order on the thickness direction of lid body, and the second section is greater than the cross-sectional area of first section at the thickness direction of perpendicular to lid body at perpendicular to lid body thickness direction at the cross-sectional area of lid body, and the mounting hole is worn to locate by first section, and the second section is located one side of lid body, and the one end of keeping away from the second section of first section has the turn-ups, and after the pole is installed in place, the turn-ups turns over towards the radial outside of mounting hole and is located one side of keeping away from the second section of lid body. According to the top cover assembly, the first section with the flanging of the pole is arranged in the mounting hole in a penetrating manner, after the pole is mounted in place, the pole is fixed on the cover body through the second section and the limit of the flanging, the reliability of pole fixation is improved, and the flanging bending fixation mode is simple and reliable, so that the cost is reduced.

Description

Top cap subassembly and have its battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a top cover assembly and a battery with the top cover assembly.

Background

The battery mainly comprises an external insulating part, a packaging pole group part, a cover plate internal insulating part and an electric connecting part in structure. The electrode group inside the battery is connected with the electrode post on the cover plate, and the positive electrode and the negative electrode are respectively led out to realize a complete circuit. At present, most of battery cover plates are of riveting structures, positive and negative poles are respectively in close fit with riveting blocks through riveting technology, and processing technology is complex.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the top cover assembly, the connecting procedure of the top cover assembly is simpler, and the processing cost of the top cover assembly is reduced.

The utility model also provides a battery, which comprises the top cover assembly.

The top cover assembly comprises a cover body and a pole. The cover body is provided with a mounting hole; the pole is in the thickness direction of lid body is last to include first section and second section in proper order, the second section is perpendicular to lid body thickness direction's cross-sectional area is greater than the first section is perpendicular to lid body thickness direction's cross-sectional area, the first section is worn to locate in the mounting hole, the second section is located one side of lid body, the one end of keeping away from of first section the second section has the turn-ups, after the pole is installed in place, the turn-ups orientation turn over the radial outside of mounting hole and be located the lid body keep away from one side of second section.

According to the top cover assembly provided by the embodiment of the utility model, the first section of the pole with the flanging is arranged in the mounting hole in a penetrating way, after the pole is mounted in place, the flanging is turned over towards the radial outer side of the mounting hole and is positioned on one side of the cover body far away from the second section, the pole is fixed on the cover body through the second section and the limit of the flanging, the reliability of pole fixation is improved, and the flanging bending fixation mode is simple and reliable, so that the cost is reduced.

In some embodiments of the utility model, the cap assembly further comprises an upper plastic. The upper plastic surrounds the first section, and is located between the cover body and the flange.

In some embodiments of the utility model, the radially outer end of the upper plastic is clamped or hot melt connected with the cover body.

In some embodiments of the utility model, a mounting groove is formed in a surface of one side of the cover body facing away from the second section, the mounting hole penetrates through a bottom wall of the mounting groove, the upper plastic is located in the mounting groove, and a surface of the upper plastic facing away from the bottom wall of the mounting groove is flush with a surface of the cover body facing away from the first section.

In some embodiments of the utility model, the upper plastic is an LCP piece.

In some embodiments of the utility model, the turn-ups extend in a circumferential direction of the pole in a ring shape, or the turn-ups comprise a plurality of sub-turn-ups spaced apart in the circumferential direction of the pole.

In some embodiments of the utility model, the cap assembly further comprises a seal ring disposed between a surface of the first section facing the cap body and between an outer peripheral wall of the first section and an inner peripheral wall of the mounting hole.

In some embodiments of the utility model, the cap assembly further comprises a lower plastic having a through hole therein, and the second section is disposed within the through hole.

In some embodiments of the utility model, the lower plastic is clamped or hot-melt connected with the cover body.

The battery according to the embodiment of the utility model comprises the top cover assembly.

According to the battery provided by the embodiment of the utility model, the first section of the pole with the flanging is arranged in the mounting hole in a penetrating way, after the pole is mounted in place, the flanging is turned over towards the radial outer side of the mounting hole and is positioned on one side of the cover body far away from the second section, and the pole is fixed on the cover body through the second section and the limit of the flanging, so that the fixing reliability of the pole is improved, and the flanging bending and fixing mode is simple and reliable, so that the cost is reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a cross-sectional view of a cap assembly according to an embodiment of the present utility model.

Reference numerals:

100. a top cover assembly;

1. a cover body; 11. a mounting hole; 12. a mounting groove;

2. a pole; 21. a first section; 211. flanging; 22. a second section;

3. applying plastic; 4. a seal ring;

5. lower plastic; 51. and a through hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A top cap assembly 100 according to an embodiment of the present utility model is described below with reference to fig. 1.

As shown in fig. 1, the cap assembly 100 according to the embodiment of the present utility model includes a cap body 1 and a post 2.

Specifically, the cover body 1 has a mounting hole 11 thereon, and the pole 2 can be mounted on the cover body 1 through the mounting hole 11. The pole 2 sequentially comprises a first section 21 and a second section 22 in the thickness direction of the cover body 1, the cross section of the second section 22 in the thickness direction perpendicular to the cover body 1 is larger than that of the first section 21 in the thickness direction perpendicular to the cover body 1, the cross section of the second section 22 in the thickness direction perpendicular to the cover body 1 is larger than that of the mounting hole 11, the first section 21 penetrates through the mounting hole 11, the second section 22 is positioned on one side of the cover body 1, one end, far away from the second section 22, of the first section 21 is provided with a flanging 211, after the pole 2 is mounted in place, the flanging 211 is folded towards the radial outer side of the mounting hole 11 and positioned on one side, far away from the second section 22, of the cover body 1, the pole 2 is fixed on the cover body 1 through limiting of the second section 22 and the flanging 211, the reliability of the fixing of the pole 2 is improved, and the flanging 211 is simply and reliably bent and fixed in a bending mode, and cost is reduced.

According to the top cover assembly 100 of the embodiment of the utility model, the first section 21 of the pole 2 with the flange 211 is arranged in the mounting hole 11 in a penetrating manner, after the pole 2 is mounted in place, the flange 211 is folded towards the radial outer side of the mounting hole 11 and is positioned on one side of the cover body 1 far away from the second section 22, and the pole 2 is fixed on the cover body 1 by limiting the second section 22 and the flange 211, so that the reliability of fixing the pole 2 is improved, and the flange 211 is simply and reliably bent and fixed, so that the cost is reduced.

In some embodiments of the present utility model, as shown in fig. 1, the top cover assembly 100 further includes an upper plastic 3, the upper plastic 3 surrounding the first section 21, the upper plastic 3 being located between the cover body 1 and the flange 211. At this time, the upper plastic 3 separates the flange 211 from the cover body 1, the elasticity of the upper plastic 3 is higher, the flange 211 can be folded and buffered above the cover body 1 when the pole 2 is riveted, the damage to the cover body 1 caused by riveting the first section 21 of the pole 2 can be avoided, and the structure of the top cover assembly 100 is more stable. At the same time, the upper plastic 3 has insulation property, so that the flange 211 and the cover body 1 are in an insulated state.

In some embodiments of the present utility model, the radially outer end of the upper plastic 3 is clamped or thermally fused with the cover body 1, so that the radially outer end of the upper plastic 3 is tightly connected with the cover body 1, and tilting of the upper plastic 3 after riveting the flange 211 of the first section 21 of the pole 2 can be avoided, so that the installation of the upper plastic 3 is more reliable.

In some embodiments of the present utility model, as shown in fig. 1, a mounting groove 12 is formed on a surface of one side of the cover body 1 facing away from the second section 22, a mounting hole 11 penetrates through a bottom wall of the mounting groove 12, the upper plastic 3 is located in the mounting groove 12, the mounting groove 12 can limit a position of the upper plastic 3, so that the position of the upper plastic 3 is limited when the flange 211 of the first section 21 of the pole 2 is riveted, the surface of the upper plastic 3 facing away from the bottom wall of the mounting groove 12 is flush with the surface of the cover body 1 facing away from the first section 21, so that the surface of the upper plastic 3 and the cover body 1 are flat, the appearance of the top cover assembly 100 is attractive, and the structure of corresponding components can be simpler when the battery is assembled with other components.

In some embodiments of the present utility model, the upper plastic 3 is an LCP (Liquid Crystal Polymer ) piece. The battery can generate high temperature during charge and discharge, the temperature of the cover body 1 and the pole 2 can rise along with the high temperature, the upper plastic 3 needs to be in direct contact with the cover body 1 and the pole 2, the temperature resistance of the LCP material is good, and the strength of the upper plastic 3 can be better ensured.

In some embodiments of the present utility model, the turn-up 211 extends in a ring shape in the circumferential direction of the pole 2, or the turn-up 211 comprises a plurality of sub-turn-ups 211 spaced apart in the circumferential direction of the pole 2. It can be understood that the flange 211 extends in the circumferential direction of the pole 2 to form a ring shape, and the pressure of the flange 211 on the upper plastic 3 and the cover body 1 is relatively uniform; the flange 211 includes a plurality of sub-flanges 211 spaced apart in the circumferential direction of the pole 2, and each flange 211 can be sufficiently pressed when the flange 211 is swaged, and the swaged flange 211 is more reliable.

In some embodiments of the present utility model, as shown in fig. 1, the top cap assembly 100 further includes a sealing ring 4, the sealing ring 4 is provided between the surface of the first section 21 facing the cap body 1 and between the outer circumferential wall of the first section 21 and the inner circumferential wall of the mounting hole 11, the sealing ring 4 may reduce the risk of foreign substances entering the inside of the battery and causing abnormal quality of the battery, and the sealing ring 4 may space the first section 21 of the terminal post 2 from the cap body 1, insulating the first section 21 of the terminal post 2 and the cap body 1 from each other.

In some embodiments of the present utility model, as shown in fig. 1, the top cover assembly 100 further includes a lower plastic 5, the lower plastic 5 is disposed on a side of the cover body 1 facing away from the flange 211, the lower plastic 5 has a through hole 51, and the second section 22 is disposed in the through hole 51. The lower plastic 5 can wrap the second section 22 of the pole 2 and jointly act with the upper plastic 3 and the sealing ring 4, so that the upper plastic 3, the sealing ring 4 or the lower plastic 5 made of insulating materials exist between the cover body 1 and the pole 2 in all directions, the insulating effect of the pole 2 and the cover body 1 can be ensured, and the use safety of the battery is improved.

In some embodiments of the present utility model, the lower plastic 5 is connected to the cover body 1 in a clamping manner or in a hot-melt manner, so that the lower plastic 5 is tightly connected to the cover body 1, and the position of the lower plastic 5 is reliable, thereby ensuring the reliability of insulation of the lower plastic 5 to the cover body 1 and the pole 2, and increasing the use safety of the battery.

The battery according to the embodiment of the present utility model includes the above-described top cap assembly 100.

According to the battery provided by the embodiment of the utility model, the first section 21 of the pole 2 with the flange 211 is arranged in the mounting hole 11 in a penetrating way, after the pole 2 is mounted in place, the flange 211 is folded towards the radial outer side of the mounting hole 11 and is positioned on one side of the cover body 1 far away from the second section 22, and the pole 2 is fixed on the cover body 1 by limiting the second section 22 and the flange 211, so that the reliability of fixing the pole 2 is improved, and the flange 211 is simply and reliably bent and fixed, so that the cost is reduced.

Other constructions and operations of the cap assembly 100 according to the embodiment of the present utility model are known to those of ordinary skill in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A top cap assembly of a battery, comprising:

the cover body is provided with a mounting hole;

the pole, the pole is in including first section and second section in proper order on the thickness direction of lid body, the second section is perpendicular to lid body thickness direction's cross-sectional area is greater than the first section is perpendicular to lid body thickness direction's cross-sectional area, the first section is worn to locate in the mounting hole, the second section is located one side of lid body, the one end of keeping away from of first section the second section has the turn-ups after the pole is installed in place, the turn-ups orientation the radial outside of mounting hole turns over and is located the lid body keep away from one side of second section.

2. The top cap assembly of a battery according to claim 1, further comprising:

and the upper plastic surrounds the first section, and is positioned between the cover body and the flanging.

3. The battery top cap assembly of claim 2, wherein the radially outer end of the upper plastic is snap-fit or heat-staked to the cap body.

4. The battery top cap assembly of claim 2, wherein the cover body has a mounting slot on a side surface facing away from the second section, the mounting hole extending through a bottom wall of the mounting slot, the upper plastic being located within the mounting slot, a surface of the upper plastic facing away from the bottom wall of the mounting slot being flush with a surface of the cover body facing away from the first section.

5. The battery top cap assembly of claim 2, wherein the upper plastic is an LCP piece.

6. The battery top cap assembly of claim 1, wherein the turn-up extends in a ring shape along a circumferential direction of the pole, or the turn-up includes a plurality of sub-turn-ups spaced apart along the circumferential direction of the pole.

7. The top cap assembly of a battery according to claim 1, further comprising:

the sealing ring is arranged between the surface of the first section, which faces the cover body, and the cover body and between the outer peripheral wall of the first section and the inner peripheral wall of the mounting hole.

8. The top cap assembly of a battery according to claim 1, further comprising:

the lower plastic is arranged on one side of the cover body, which is far away from the flanging, and is provided with a through hole, and the second section is arranged in the through hole.

9. The battery top cap assembly of claim 8, wherein the lower plastic is snap-fit or heat-staked to the cap body.

10. A battery comprising the top cap assembly of the battery according to any one of claims 1 to 9.