CN214589037U

CN214589037U - Battery top cap and power battery

Info

Publication number: CN214589037U
Application number: CN202120652350.1U
Authority: CN
Inventors: 励建炬; 邱宜升; 吴林峰
Original assignee: Shenzhen Kedali Industry Co ltd
Current assignee: Shenzhen Kedali Industry Co ltd; Shenzhen Kedali Ind Co Ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-11-02
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a battery top cap and power battery relates to power battery technical field. The battery top cover comprises a cover plate, a connecting piece and a pole. The cover plate is provided with a mounting hole. The connecting piece is matched in the mounting hole and connected with the cover plate. The utmost point post is worn to establish in the connecting piece, and the one end butt of utmost point post is connected the one end of connecting piece, and the other end of utmost point post is fixed in the other end of connecting piece through pulling rivet. Because be equipped with the blind hole of connecting the rivet drive structure in the utmost point post, make utmost point post can be fixed in on the connecting piece through riveting to improved the connection steadiness of utmost point post on the apron, and reduced ordinary riveted must the part simultaneously, avoided the required welding process of ordinary riveting, can further improve the lightweight performance of battery top cap, improve the assembly efficiency of battery top cap, reduce the manufacturing cost of battery top cap.

Description

Battery top cap and power battery

Technical Field

The utility model relates to a power battery technical field especially relates to a battery top cap and power battery.

Background

When the battery top cover is used for installing the pole, various installation modes are generally adopted, such as riveting installation and welding installation, but a riveting structure needs to be additionally arranged in the riveting installation, so that the weight of the battery cover plate is larger; riveting installation and welding installation all have higher welding cost, and appear welding bad phenomenon easily among the welding process, have not only improved the assembly cost of battery top cap, have also reduced the production efficiency of battery top cap.

Therefore, a need for a battery top cap and power battery, can improve the lightweight performance of battery top cap, improve the assembly efficiency of battery top cap, reduce the manufacturing cost of battery top cap.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery top cap can improve the lightweight performance of battery top cap, improves the assembly efficiency of battery top cap, reduces the manufacturing cost of battery top cap.

Another object of the utility model is to provide a power battery can improve power battery's lightweight performance, improves power battery's assembly efficiency, reduces power battery's manufacturing cost.

For realizing the above technical effect, the technical scheme of the utility model as follows:

a battery top cap, comprising: the cover plate is provided with a mounting hole; the connecting piece is matched in the mounting hole and connected with the cover plate; the utmost point post, utmost point post wears to establish in the connecting piece, the one end butt of utmost point post the one end of connecting piece, the other end of utmost point post is fixed in through pulling rivet the other end of connecting piece.

Further, the outer peripheral wall of the end part of the pole abutting against the connecting piece is provided with a pressing flange abutting against the connecting piece.

Furthermore, a blind hole is formed in one end of the pole, an internal thread is arranged on the inner wall of the blind hole, and the internal thread is used for being connected with the rivet driving structure.

Further, the blind hole is a stepped hole, the internal thread is arranged at the small end of the blind hole, and the large end of the blind hole is an open end.

Further, a matching groove is formed in the top wall of the connecting piece, a riveting convex ring is formed on the outer peripheral wall of the pole column, and the riveting convex ring abuts against the bottom wall and the inner peripheral wall of the matching groove.

Further, the connecting piece includes sealing member and first plastic part, first plastic part is established on the roof of apron, the sealing member is established on the diapire of apron.

Further, the sealing element and the first plastic part both extend into the mounting hole.

Further, the cover plate comprises a top plate and a second plastic part, the top plate is arranged above the second plastic part, and the second plastic part is connected with the top plate.

Furthermore, the second plastic part is provided with a square hole, and the end part of the pole is matched in the square hole.

A power battery comprising the battery top cover described above.

The utility model discloses a beneficial effect does: according to the utility model discloses a battery top cap, because utmost point post can be fixed in on the connecting piece through rivet, thereby improved the connection steadiness of utmost point post on the apron, and reduced ordinary riveted must part simultaneously, avoided the required welding processes of ordinary riveting, can further improve battery top cap's lightweight performance, improve battery top cap's assembly efficiency, reduce battery top cap's manufacturing cost.

The utility model discloses an another beneficial effect does: according to the utility model discloses a power battery owing to have the aforesaid battery top cap, can further improve power battery's lightweight performance, improve power battery's assembly efficiency, reduce power battery's manufacturing cost.

Additional aspects and advantages of the invention 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 invention.

Drawings

Fig. 1 is a schematic structural diagram of a battery top cover according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a battery top cover and a rivet driving structure according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of a battery top cover before riveting according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial cross-sectional structure of a riveted battery top cover according to an embodiment of the present invention.

Reference numerals

1. A cover plate; 11. a top plate; 12. a second plastic part; 121. a square hole; 2. a connecting member; 21. a first plastic part; 22. a seal member; 23. a mating groove; 3. a pole column; 31. blind holes; 32. a compression flange; 33. an internal thread; 34. a step; 35. riveting a convex ring; 4. rivet driving structure.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The specific structure of the battery top cover according to the embodiment of the present invention will be described below with reference to fig. 1 to 4.

As shown in fig. 1-4, fig. 1 discloses a battery top cap, which comprises a cover plate 1, a connecting member 2 and a pole 3. The cover plate 1 is provided with a mounting hole. The connecting piece 2 is matched in the mounting hole and connected with the cover plate 1. Utmost point post 3 wears to establish in connecting piece 2, and the one end butt connecting piece 2 of utmost point post 3's one end, and the other end of utmost point post 3 is fixed in the other end of connecting piece 2 through pulling the rivet.

It can be understood that one end of the post 3 can be kept abutting against one end of the connecting piece 2, the other end of the post can be fixedly connected to the other end of the connecting piece 2 through rivet, and meanwhile, the connecting piece 2 is stably connected with the cover plate 1, so that the post 3 can be well and stably and reliably mounted on the cover plate 1. Due to the adoption of the pole 3 with the blind hole 31, the pole 3 can be connected to the cover plate 1 without common riveting, a riveting aluminum block does not need to be additionally arranged on the cover plate 1 in the riveting process, and welding operation is not needed after the riveting is finished, so that the number of parts of the battery top cover is reduced, the weight of the battery top cover is reduced, and the lightweight performance of the battery top cover is better; and avoid behind the welding process, can avoid the unstable problem of the connectivity of utmost point post 3 and apron 1 that the welding is bad to lead to, can also further reduce the assembly process of battery top cap to improve the assembly efficiency of battery top cap, and owing to need not to use welding equipment, thereby can also reduce the assembly cost of battery top cap.

According to the battery top cover of this embodiment, because utmost point post 3 can be fixed in on connecting piece 2 through rivet, thereby improved utmost point post 3 and connected the steadiness on apron 1, and reduced ordinary riveted must part simultaneously, avoided the required welding process of ordinary riveting, can further improve the lightweight performance of battery top cover, improve the assembly efficiency of battery top cover, reduce the manufacturing cost of battery top cover.

In some embodiments, as shown in fig. 2-4, the peripheral wall of the end of the pole 3 abutting the connector 2 is provided with a compression flange 32, the compression flange 32 abutting the connector 2.

It can be understood that the hold-down flange 32 can abut the connector 2 to be convenient for when rivet the post 3, make utmost point post 3 keep in same position, hold-down flange 32 simultaneously can also with rivet the effort cooperation so that utmost point post 3 firmly centre gripping connector 2 and apron 1, and then improve the steadiness of utmost point post 3 installation on apron 1.

In some embodiments, as shown in fig. 3 and 4, the inner wall of the blind hole 31 is provided with an internal thread 33, the internal thread 33 being intended to be connected to the blind rivet driving structure 4.

It can be understood that, because the rivet driving structure 4 in the prior art is usually connected with the structure to be riveted through threads, the internal threads 33 are preset in the blind hole 31, so that the rivet driving structure 4 can be conveniently and quickly and reliably connected with the pole 3, and the assembly efficiency of the pole 3 on the cover plate 1 is improved. In addition, the screw-thread fit can also be convenient for the rivet driving structure 4 to break away from the pole 3 after the rivet is finished, so that the battery top cover can be normally used.

In some embodiments, as shown in fig. 3 and 4, the blind hole 31 is a stepped hole, the internal thread 33 is opened at the small end of the blind hole 31, and the large end of the blind hole 31 is an open end.

It can be understood that the large end of the blind hole 31 can facilitate the movement of the rivet driving structure 4 in the blind hole 31, and the small end of the blind hole 31 where the internal thread 33 is opened can facilitate the movement of the end of the driving post 3 of the rivet driving structure 4 far away from the connecting piece 2. In addition, because utmost point post 3's external diameter is the same usually, utmost point post 3 will be less than its wall thickness at little end department at the wall thickness of big end department, and the main points of rivet process lie in compressing tightly the wall extrusion deformation of utmost point post 3 on connecting piece 2, therefore utmost point post 3 is changeed in the big end department of blind hole 31 and is produced the deformation under the effect of rivet drive structure 4 to both improved utmost point post 3's rivet assembly efficiency, also improved utmost point post 3 fixed effect on apron 1.

Specifically, as shown in fig. 3 and 4, the inner wall of the blind hole 31 is opened with a step 34, so that the blind hole 31 is formed as a stepped hole.

In some embodiments, as shown in fig. 2-4, the top wall of the connecting member 2 is opened with a fitting groove 23, the outer circumferential wall of the pole 3 is formed with a riveting convex ring 35, and the riveting convex ring 35 abuts against the bottom wall and the inner circumferential wall of the fitting groove 23.

It can be understood that, riveting bulge loop 35 is the lateral wall that is by utmost point post 3 and is extruded deformation under the effect of rivet drive structure 4 and form promptly, predetermine at the roof of connecting piece 2 and rivet bulge loop 35's cooperation groove 23 back, the internal perisporium and the diapire that cooperation groove 23 can be compressed tightly respectively to the periphery wall and the diapire of riveting bulge loop 35 to can improve utmost point post 3 and pass through the connection steadiness of riveting bulge loop 35 with connecting piece 2, further improve utmost point post 3 connection reliability on apron 1.

In some embodiments, as shown in fig. 2 to 4, the connecting member 2 includes a sealing member 22 and a first plastic member 21, the first plastic member 21 is disposed on the top wall of the cover plate 1, and the sealing member 22 is disposed on the bottom wall of the cover plate 1.

It can be understood that sealing member 22 can be convenient for realize sealed effect between utmost point post 3 and the mounting hole, and first plastic part 21 can play the guard action to utmost point post 3, can also further improve the sealed effect between utmost point post 3 and the mounting hole to make the battery top cap can keep better leakproofness in the in-service use, improved battery top cap's safety in utilization.

In some embodiments, as shown in fig. 3 and 4, the sealing member 22 and the first plastic member 21 both extend into the mounting hole.

It can be understood that the sealing performance among the sealing member 22, the first plastic member 21, the terminal 3 and the mounting hole can be further improved by the above-mentioned structural arrangement, so as to further improve the safety of the battery top cover.

In some embodiments, the first plastic part 21 is any one of PPS, PFA, and PP plastic parts, and may be conductive plastic or non-conductive plastic. Of course, in other embodiments of the present invention, the first plastic part 21 may also be another second plastic part 12 such as rubber.

In some embodiments, as shown in fig. 1 to 4, the cover plate 1 includes a top plate 11 and a second plastic member 12, the top plate 11 is disposed above the second plastic member 12, and the second plastic member 12 is connected to the top plate 11.

It will be appreciated that the provision of the top plate 11 and the second plastic part 12 can facilitate the mounting of the pole 3 on the cover plate 1. And meanwhile, the second plastic part 12 is arranged below the top plate 11, so that the pole 3 can be compressed tightly by the second plastic part 12 when being installed, and the connection stability of the pole 3 and the cover plate 1 is further improved. The top plate 11 and the second plastic part 12 may be connected by various methods such as welding, riveting, screwing, and the like.

In some embodiments, as shown in fig. 2, the second plastic part 12 is provided with a square hole 121, and the end of the pole 3 is fitted in the square hole 121.

It can be understood that the cooperation of direction hole and utmost point post 3's tip can prevent that utmost point post 3 from appearing the rotation phenomenon to having played rotatory spacing effect to utmost point post 3 installation on apron 1, thereby can reducing the rejection rate in the battery top cap production manufacturing process, promoted the reliability of battery top cap in the use.

The utility model also discloses a power battery, including the aforesaid battery top cap.

According to the utility model discloses power battery, owing to have the foregoing battery top cap, can improve the connection steadiness of utmost point post 3 on apron 1 to reduce ordinary riveted must part simultaneously, avoid the required welding processes of ordinary riveting, can further improve power battery's lightweight performance, improve power battery's assembly efficiency, reduce power battery's manufacturing cost.

Example (b):

a power battery according to an embodiment of the present invention will be described with reference to fig. 1 to 4.

The power battery of this embodiment includes a battery top cover.

The battery top cap includes apron 1, connecting piece 2 and utmost point post 3.

The cover plate 1 is provided with a mounting hole. The cover plate 1 comprises a top plate 11 and a second plastic part 12, the top plate 11 is arranged above the second plastic part 12, and the second plastic part 12 is connected with the top plate 11. The second plastic part 12 is provided with a square hole 121, and the end of the pole 3 is fitted in the square hole 121.

The connecting piece 2 is matched in the mounting hole and connected with the cover plate 1. The cooperation groove 23 has been seted up to the roof of connecting piece 2, and the periphery wall of utmost point post 3 is formed with riveting bulge loop 35, and riveting bulge loop 35 butt cooperation groove 23's diapire and internal perisporium. The connecting piece 2 comprises a sealing piece 22 and a first plastic piece 21, the first plastic piece 21 is arranged on the top wall of the cover plate 1, and the sealing piece 22 is arranged on the bottom wall of the cover plate 1. The sealing member 22 and the first plastic member 21 are inserted into the mounting hole.

Utmost point post 3 wears to establish in connecting piece 2, and blind hole 31 has been seted up to utmost point post 3, and the one end butt connecting piece 2's of utmost point post 3 one end, the other end of utmost point post 3 are fixed in the other end of connecting piece 2 through pulling the rivet. The outer peripheral wall of the end of the pole 3 abutting the connector 2 is provided with a pressing flange 32, and the pressing flange 32 abuts the connector 2. The inner wall of the blind hole 31 is provided with an internal thread 33, and the internal thread 33 is used for connecting with the rivet driving structure 4. The blind hole 31 is a stepped hole, the internal thread 33 is arranged at the small end of the blind hole 31, and the large end of the blind hole 31 is an open end.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A battery top cap, comprising:

the cover plate (1), the cover plate (1) is provided with a mounting hole;

the connecting piece (2) is matched in the mounting hole and connected with the cover plate (1);

utmost point post (3), utmost point post (3) are worn to establish in connecting piece (2), the one end butt of utmost point post (3) the one end of connecting piece (2), the other end of utmost point post (3) is fixed in through pulling the rivet the other end of connecting piece (2).

2. The battery top cap according to claim 1, characterized in that the peripheral wall of the end of the pole (3) abutting the connector (2) is provided with a pressing flange (32), the pressing flange (32) abutting the connector (2).

3. The battery top cover according to claim 1, characterized in that a blind hole (31) is formed in one end of the pole (3), an internal thread (33) is formed in the inner wall of the blind hole (31), and the internal thread (33) is used for being connected with the rivet driving structure (4).

4. Cell top cap according to claim 3, characterized in that the blind hole (31) is a stepped (34) hole, the internal thread (33) opens at the small end of the blind hole (31), the large end of the blind hole (31) being an open end.

5. The battery top cover according to claim 1, wherein the top wall of the connecting piece (2) is provided with a matching groove (23), the outer peripheral wall of the pole (3) is provided with a riveting convex ring (35), and the riveting convex ring (35) is abutted against the bottom wall and the inner peripheral wall of the matching groove (23).

6. The battery top cap according to claim 1, characterized in that the connecting member (2) comprises a sealing member (22) and a first plastic member (21), the first plastic member (21) is provided on the top wall of the cap plate (1), and the sealing member (22) is provided on the bottom wall of the cap plate (1).

7. The battery top cap of claim 6, wherein the sealing member (22) and the first plastic member (21) both extend into the mounting hole.

8. The battery top cap according to claim 1, characterized in that the cover plate (1) comprises a top plate (11) and a second plastic member (12), the top plate (11) is arranged above the second plastic member (12), and the second plastic member (12) is connected with the top plate (11).

9. The battery top cap according to claim 8, characterized in that the second plastic part (12) is provided with a square hole (121), and the end of the pole (3) is fitted in the square hole (121).

10. A power cell comprising the cell cap of any one of claims 1-9.