CN220291031U

CN220291031U - Battery top cap and battery

Info

Publication number: CN220291031U
Application number: CN202321368409.XU
Authority: CN
Inventors: 王有生; 李华; 覃太平
Original assignee: Dongguan Ruidefeng Precision Technology Co ltd
Current assignee: Dongguan Ruidefeng Precision Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2024-01-02
Anticipated expiration: 2033-05-31

Abstract

The utility model relates to the technical field of batteries, and discloses a battery top cover and a battery, wherein the battery top cover comprises: a top cover plate, wherein the top cover plate is provided with surrounding walls which are arranged in a surrounding manner, and the surrounding walls form pole holes in a surrounding manner; the pole is provided with an anti-torsion structure; the top of the surrounding wall extends upwards to form an upper extension ring, and the upper extension ring extends towards the pole to form an upper ring; the bottom of the surrounding wall extends downwards to form a lower extension ring, and the lower extension ring extends towards the pole to form a lower ring; the upper ring and the lower ring are longitudinally spaced to form a glue injection space, glue injection rings are arranged in the glue injection space, and the glue injection rings are clamped in the glue injection space to relatively fix the pole and the top cover sheet. Through arranging the injecting glue ring in annular space, make the utmost point post fix in the mounting hole, need not the welding and can be with the effectual fixing of utmost point post in the mounting hole, reduce the process, reduce cost, through the anti-torsion structure on the utmost point post, improve its anti-torsion performance simultaneously, prevent that the utmost point post from torsion and destroy the inner structure of battery in the use.

Description

Battery top cap and battery

Technical Field

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

Background

Batteries are a source of stored energy with many useful and practical applications, and battery tops are critical structures in batteries that are capped on a housing, can be connected to a cell within the housing, and are also used to connect to the outside.

The battery top cover comprises a top cover plate and a pole, wherein the pole is one of important constituent structures of the battery, the quality of the connection effect of the pole directly influences the service effect and the service life of the battery, one end of the pole is directly connected with a busbar, the other end of the pole is connected with an external conductor, and the pole is a common conductor in battery production.

In the prior art, in the assembling process of the pole and the top cover plate, the pole and the welding ring are encapsulated into a whole, and then the welding ring and the top cover plate are welded and fixed, so that the pole is mounted on the top cover plate. In the welding process, bad phenomena such as cold joint, welding explosion point and the like easily occur, and the whole operation is complex and the cost is high.

Disclosure of Invention

The utility model aims to provide a battery top cover and a battery, and aims to solve the problem that in the prior art, the mounting operation of a pole is complex.

The utility model is realized in that a battery top cover comprises:

the top cover plate is provided with surrounding walls which are arranged in a surrounding manner, a pole hole for mounting a pole is formed by surrounding the surrounding walls, the top cover plate is provided with a liquid injection hole and an explosion-proof hole, and the explosion-proof hole is provided with an explosion-proof sheet;

the pole is arranged in the pole hole, and an anti-torsion structure is arranged on the pole;

the top of the surrounding wall extends upwards to form an upper extension ring, and the top of the upper extension ring extends horizontally towards the pole to form an upper ring; the bottom of the surrounding wall extends downwards to form a lower extension ring, and the bottom of the lower extension ring extends horizontally towards the pole to form a lower ring;

the upper ring and the lower ring are longitudinally spaced to form a glue injection space, glue injection rings formed by glue injection are arranged in the glue injection space, the glue injection rings are wrapped on the periphery of the pole, the glue injection rings are clamped in the glue injection space and are relatively fixed between the pole and the top cover sheet, and the top and the bottom of the pole are respectively exposed out of the top cover sheet.

Optionally, the anti-torsion structure comprises an anti-torsion groove; the middle part of utmost point post has the extension ring that outwards expands and form, the top of extension ring has a plurality of undercut formation prevent turning round the groove, a plurality of prevent turning round the groove and be even interval arrangement, the injecting glue ring will prevent turning round the groove and fill up.

Optionally, an upper ring space is arranged between the upper ring and the pole, the upper ring space is communicated with the glue injection space, and the glue injection ring fills the upper ring space.

Optionally, the glue injection ring extends radially outwards to form a wrapping ring, and the wrapping ring wraps the upper ring and the upper extension ring completely.

Optionally, the top cover sheet is provided with an annular groove formed by recessing inwards, and the annular groove is arranged along the periphery of the upper extension ring in a surrounding manner; the periphery of the wrapping ring is embedded into the annular groove and is pressed against the bottom of the annular groove.

Optionally, the top cover sheet is provided with a plurality of arc-shaped grooves formed by inward recessing, and the plurality of arc-shaped grooves are arranged at intervals along the periphery of the upper extension ring; the periphery of the wrapping ring extends towards the arc-shaped groove and is propped against the bottom of the arc-shaped groove.

Optionally, the coating ring and the glue injection ring are integrally formed.

Optionally, the top cover plate is provided with an upward protruding embedding structure, the embedding structure is circumferentially arranged along the peripheral direction of the upper extension ring, the periphery of the wrapping ring is provided with an embedding groove matched with the embedding structure, and the embedding structure is embedded into the embedding groove.

Optionally, a sealing space is arranged between the expansion ring and the lower ring, a sealing ring is arranged in the sealing space, the sealing ring is circumferentially arranged along the circumference of the pole, and the pole is propped against the sealing ring from top to bottom;

the lower surface of the top cover sheet is provided with a plastic part, and the upper surface of the plastic part is abutted against the lower surface of the top cover sheet from bottom to top;

the top cover piece is characterized in that a plurality of positioning holes are formed in the lower surface of the top cover piece, a plurality of positioning protrusions protruding towards the positioning holes are formed in the upper surface of the plastic piece, and the positioning protrusions are embedded into the positioning holes so that the plastic piece is fixedly connected with the top cover piece.

Optionally, the upper ring has an outer end surface arranged towards the pole, the outer end surface having a polygonal shape.

Compared with the prior art, the battery top cover provided by the utility model has the advantages that the glue injection ring is arranged in the annular space, the pole is effectively fixed in the mounting hole without welding, the working procedures are reduced, the cost is reduced, and meanwhile, the anti-torsion performance of the battery top cover is improved through the anti-torsion structure on the pole, so that the internal structure of the battery is prevented from being damaged due to torsion of the pole in the use process.

The battery comprises the battery top cover and the battery.

Compared with the prior art, the battery provided by the utility model comprises the battery top cover, the battery top cover structure only needs to adopt the rubber coating in the installation process, the modes of spin riveting, flanging, leveling, vertical first and inwards winding after forming the rubber injection ring are adopted, so that the pole is fixedly installed in the installation hole, the problem of poor welding is effectively avoided, meanwhile, the problem of poor welding is effectively avoided, and meanwhile, the internal structure of the battery is effectively prevented from being damaged due to torsion of the pole in the use process due to the fact that the friction force between the rubber injection ring and the pole is small.

Drawings

Fig. 1 is a schematic perspective view of a battery top cover provided by the utility model;

FIG. 2 is a schematic cross-sectional view of a pole hole in half section provided by the present utility model;

FIG. 3 is a schematic rear view of a battery top cover provided by the present utility model;

FIG. 4 is a perspective view of a plastic part according to the present utility model;

FIG. 5 is a schematic perspective view of a pole provided by the present utility model;

FIG. 6 is a schematic perspective view of a pole provided by the present utility model;

FIG. 7 is a schematic perspective view of a roof sheet provided by the present utility model;

FIG. 8 is an enlarged schematic view of FIG. 7A provided in accordance with the present utility model;

fig. 9 is a schematic perspective view of a roof sheet provided by the present utility model;

FIG. 10 is a schematic perspective view of the view B in FIG. 9 provided by the present utility model;

fig. 11 is a schematic cross-sectional view of a pole hole provided by the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The implementation of the present utility model will be described in detail below with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present utility model, and specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1-11, a preferred embodiment of the present utility model is provided.

The battery top cover provided by the utility model comprises:

the top cover plate 100, the top cover plate 100 is provided with surrounding walls which are arranged in a surrounding manner, the surrounding walls form a pole hole 10 for mounting the pole 200, the top cover plate 100 is provided with a liquid injection hole 20 and an explosion-proof hole 30, and the explosion-proof hole 30 is provided with an explosion-proof sheet;

the pole 200, the pole 200 is installed in the pole hole, the pole 200 is provided with an anti-torsion structure;

the top of the surrounding wall extends upwards to form an upper extension ring 110, and the top of the upper extension ring 110 extends horizontally towards the pole 200 to form an upper ring 111; the bottom of the surrounding wall extends downwards to form a lower extension ring 120, and the bottom of the lower extension ring 120 extends horizontally towards the pole 200 to form a lower ring 121;

the upper ring 111 and the lower ring 121 have a longitudinal space therebetween to form a glue injection space, a glue injection ring 300 formed by glue injection is arranged in the glue injection space, the glue injection ring 300 is wrapped on the periphery of the pole 200, and the glue injection ring 300 is clamped in the glue injection space to relatively fix the pole 200 and the top cover sheet 100, and the top and the bottom of the pole 200 are respectively exposed outside the top cover sheet 100.

Above-mentioned novel battery top cap that provides, through arranging injecting glue ring 300 in the annular space, effectually fix the utmost point post 200 in the mounting hole, need not the welding can be with the effectual fixing of utmost point post 200 in the mounting hole, reduce the process, reduce cost, simultaneously through the anti-torsion structure on the utmost point post 200, improve its anti-torsion performance, prevent that the utmost point post 200 from taking place to twist reverse and destroy the inner structure of battery in the use.

Specifically, the anti-twisting structure includes an anti-twisting groove 211; the middle part of the pole 200 is provided with an expansion ring 210 formed by outward expansion, the top of the expansion ring 210 is provided with a plurality of anti-torsion grooves 211 formed by downward sinking, the plurality of anti-torsion grooves 211 are uniformly arranged at intervals, and the anti-torsion grooves 211 are filled with the glue injection ring 300.

Specifically, the number of the anti-twist grooves 211 is four, and the pole 200 is effectively prevented from twisting when the pole 200 tends to twist at the portion inserted into the anti-twist grooves 211 by the glue injection ring 300.

An upper ring space is formed between the upper ring 111 and the pole 200, and is communicated with the glue injection space, and the glue injection ring 300 fills the upper ring space. Thus, the pole 200 is effectively reinforced at a plurality of angles, and short circuit and the like caused by contact of the pole 200 with surrounding walls are avoided.

The glue injection ring 300 extends radially outwardly to form a wrapping ring 310, the wrapping ring 310 completely wrapping the upper annular ring 111 and the upper extension ring 110. In this way, the contact area is increased while avoiding short circuits.

Referring to fig. 8, the top cover sheet 100 has an annular groove 101 formed to be recessed inward, and the annular groove 101 is circumferentially arranged along the outer circumference of the upper extension ring 110; the outer periphery of the wrapping ring 310 is embedded into the annular groove 101 and presses against the bottom of the annular groove 101. By the design of the annular groove 101, the connection structure between the encapsulation ring and the top cover sheet 100 is increased, and the fixation of the encapsulation ring is ensured.

Referring to fig. 10, the top cover sheet 100 has a plurality of arc grooves 103 formed to be recessed inward, the plurality of arc grooves 103 being spaced apart along the outer circumference of the upper extension ring 110; the outer circumference of the wrapping ring 310 extends towards the arcuate slot 103 and presses against the bottom of the arcuate slot 103.

Referring to fig. 11, in the present embodiment, the top sheet 100 is provided with an upwardly protruding insertion structure 104, the insertion structure 104 being circumferentially arranged along the outer circumferential direction of the upper extension ring 110, the outer circumference of the wrapping ring 310 having an insertion groove 311 fitted with the insertion structure 104, the insertion structure 104 being inserted into the insertion groove 311. Specifically, the embedded structure 104 may be annular, arc-shaped, etc., and the embedded groove 311 is matched with the annular, arc-shaped, etc.

Specifically, the wrapping ring 310 is integrally formed with the glue injection ring 300. Through the integrative formation of injecting glue, guarantee bulk strength.

The expansion ring 210 and the lower ring 121 have a sealing space therebetween, a sealing ring is arranged in the sealing space, the sealing ring 130 is circumferentially arranged along the circumference of the pole 200, and the pole 200 is pressed against the sealing ring 130 from top to bottom. Thus, the sealing performance, dust prevention and the like are ensured, and the whole structure is more compact.

The lower surface of the top cover 100 is provided with a plastic part 140, and the upper surface of the plastic part 140 is abutted against the lower surface of the top cover 100 from bottom to top. Avoid short circuit, make overall structure compacter simultaneously, make the collocation between each subassembly more firm.

The lower surface of the top cover 100 is provided with a plurality of positioning holes 102, and the upper surface of the plastic member 140 is provided with a plurality of positioning protrusions 141 protruding towards the positioning holes 102, and the positioning protrusions 141 are embedded into the positioning holes 102, so that the plastic member 140 is fixedly connected with the top cover 100. In this way, the plastic member 140 is effectively fixed by the engagement between the positioning protrusion 141 and the positioning hole 102.

Referring to fig. 7-8 for one embodiment, referring to fig. 9-10 for one embodiment: the upper ring 111 has an outer end face 112 disposed toward the pole 200, and the outer end face 112 has a polygonal shape. In this way, the regular shape such as a ring shape is filled with the injection molding, and the injection molding ring 300 is abutted against the outer end surface 112, and the polygonal outer end surface 112 can effectively prevent the pole 200 from twisting.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. Battery top cap, its characterized in that includes:

2. The battery top cover of claim 1, wherein the anti-twist feature comprises an anti-twist groove; the middle part of utmost point post has the extension ring that outwards expands and form, the top of extension ring has a plurality of undercut formation prevent turning round the groove, a plurality of prevent turning round the groove and be even interval arrangement, the injecting glue ring will prevent turning round the groove and fill up.

3. The battery top cover of claim 2, wherein an upper ring space is provided between the upper ring and the pole, the upper ring space is communicated with the glue injection space, and the glue injection ring fills the upper ring space.

4. The battery top cover of claim 3, wherein the glue injection ring extends radially outward to form a wrap ring that completely wraps the upper ring and the upper extension ring.

5. The battery top cover of claim 4, wherein said top cover sheet has an annular recess formed therein recessed inwardly, said annular recess being circumferentially disposed along the periphery of said upper extension ring; the periphery of the wrapping ring is embedded into the annular groove and is pressed against the bottom of the annular groove.

6. The battery top cover of claim 4, wherein said top cover sheet has a plurality of arcuate slots formed therein recessed inwardly, a plurality of said arcuate slots being spaced along the periphery of said upper extension ring; the periphery of the wrapping ring extends towards the arc-shaped groove and is propped against the bottom of the arc-shaped groove.

7. The battery top cover according to claim 4, wherein the top cover sheet is provided with an upward protruding insertion structure, the insertion structure is circumferentially arranged along the outer circumferential direction of the upper extension ring, the outer circumference of the wrapping ring is provided with an insertion groove matched with the insertion structure, and the insertion structure is inserted into the insertion groove.

8. The battery top cover according to any one of claims 2 to 7, wherein a sealing space is provided between the expansion ring and the lower ring, a sealing ring is arranged in the sealing space, the sealing ring is circumferentially arranged along the circumference of the pole, and the pole is pressed against the sealing ring from top to bottom;

9. The battery top cover of claim 5 or 6, wherein the upper ring has an outer end surface disposed toward the pole, the outer end surface having a polygonal shape.

10. A battery comprising the battery top cover of any one of claims 1 to 9.