CN218513548U

CN218513548U - Battery top cap and battery

Info

Publication number: CN218513548U
Application number: CN202222414675.3U
Authority: CN
Inventors: 黄智博; 杨道均; 何勤求
Original assignee: Sany Hongxiang Battery Co ltd
Current assignee: Sany Hongxiang Battery Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-02-21
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a battery top cap and battery belongs to battery technical field, include: the cover plate is provided with a pole column hole; the pole column is inserted into the pole column hole; the annular insulating part is inserted into the pole hole and is positioned between the cover plate and the poles, a limiting groove is formed in one of the hole wall of the pole hole and the outer wall of the annular insulating part, a limiting protrusion is arranged on the other one of the hole wall of the pole hole and the outer wall of the annular insulating part, and the limiting groove is matched with the limiting protrusion. The utility model provides a pair of battery top cap utilizes spacing recess and spacing protruding looks joint, realizes the fixed mounting of annular insulating part and apron, avoids annular insulating part at ascending rotation in week to, set up spacing recess or spacing arch on the inner wall in utmost point post hole, annular insulating part need not to cover to the upper surface of apron on, consequently, can not cause the extra occupation to the module space, improves module space utilization.

Description

Battery top cap and battery

Technical Field

The utility model relates to a battery technology field, concretely relates to battery top cap and battery.

Background

With the development of new energy, the market demand of lithium ion batteries is increasing. In order to prevent additional electrical connection between the battery top cap terminal post and external components, an upper insulator is typically provided around the terminal post. Because the utmost point post of most batteries all adopts the cylinder structure, can take place to rotate when utmost point post receives external force to influence. Because the intensity of going up the insulating part is limited, receive the pivoted influence of utmost point post to go up the insulating part and also driven and take place to rotate and then take place the position change to lead to the appearance gap between utmost point post and the last insulating part, perhaps between last insulating part and the apron, thereby cause the leakproofness variation of battery top cap, and cause the potential safety hazard.

Chinese patent document CN 210167389U discloses a secondary battery top cap, and a mounting hole for mounting a pole is opened on a cover plate, and a clamping portion is provided on the upper surface of the cover plate around the mounting hole, and an upper insulating member is clamped and fixed with the cover plate through the clamping portion. Therefore, go up the insulating part and need enclose the outside of locating utmost point post and cover the partial upper surface of apron, lead to going up the insulating part and can occupy the module space, reduce module space utilization.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that module space utilization among the prior art is low to a battery top cap and battery are provided.

In order to solve the above problem, the utility model provides a battery top cap, include: the cover plate is provided with a pole column hole; the pole column is inserted into the pole column hole; the annular insulating part is inserted into the pole hole and is positioned between the cover plate and the poles, a limiting groove is formed in one of the hole wall of the pole hole and the outer wall of the annular insulating part, a limiting protrusion is arranged on the other one of the hole wall of the pole hole and the outer wall of the annular insulating part, and the limiting groove is matched with the limiting protrusion.

Optionally, the limiting groove and the limiting protrusion are correspondingly provided with a plurality of limiting grooves, and the plurality of limiting grooves and the plurality of limiting protrusions are arranged at intervals along the circumferential direction.

Optionally, a protruding block is formed on the outer wall of the annular insulating part, the protruding block is close to the upper end of the annular insulating part, and the protruding block is clamped with the upper surface of the cover plate.

Optionally, a cross section of the projection in the radial direction of the annular insulator is a triangular cross section, and a tip of the triangular cross section is located at an upper end of the annular insulator.

Optionally, a first annular boss is further formed on an outer wall of the annular insulating member, an outer diameter of the first annular boss is larger than an aperture of the pole hole, and an upper surface of the first annular boss abuts against a lower surface of the cover plate.

Optionally, the annular insulator is an injection molded one-piece structure.

Optionally, the upper end of the annular insulating member is flush with the upper end of the pole.

Optionally, a second annular boss is formed on the outer wall of the pole, the outer diameter of the second annular boss is larger than the aperture of the pole hole, and the second annular boss abuts against the annular insulating member; the battery top cap still includes annular fixed part, annular fixed part is located the downside of apron, the interior edge of annular fixed part set up in the downside of second annular boss, the outer edge of annular fixed part with the lower surface of apron is connected.

Optionally, the battery top cap further comprises a sealing structure disposed between the second annular boss and the annular fixture.

The utility model also provides a battery, including foretell battery top cap.

The utility model has the advantages of it is following:

1. the utility model provides a pair of battery top cap, on the pore wall in utmost point post hole, and set up spacing recess and spacing arch on the outer wall with pore wall matched with annular insulating part respectively, in order to utilize spacing recess and spacing protruding looks joint, realize the fixed mounting of annular insulating part and apron, avoid annular insulating part to rotate in week, and, set up spacing recess or spacing arch on the pore wall in utmost point post hole, annular insulating part need not to cover to the upper surface of apron on, therefore, can not cause the extra occupation to the module space, improve module space utilization.

2. The utility model provides a pair of battery top cap through set up the lug on the outer wall at annular insulating part to the upper surface that utilizes lug and apron forms spacingly, avoids annular insulating part to break away from the apron downwards, guarantees the stability of annular insulating part installation.

3. The utility model provides a pair of battery top cap sets up the lug into under narrow wide triangle-shaped cross-sectional structure, when having guaranteed that the lug can with the spacing butt of the upper surface of apron, the annular insulating part of being convenient for upwards inserts the downthehole installation of utmost point post by the downside of apron.

4. The utility model provides a pair of battery top cap forms spacing butt through the lower surface of first annular boss with the apron, avoids annular insulating part upwards to wear out from utmost point post is downthehole, further guarantees the stability of annular insulating part installation.

5. The utility model provides a pair of battery top cap penetrates utmost point post downthehole from the downside of apron with utmost point post, utilizes the second annular boss on the utmost point post to carry on spacingly to utmost point post to utilize annular mounting to fix utmost point post at the downside of second annular boss and apron, realize the fixed mounting of utmost point post and apron, utilize utmost point post self structure and set up and fix utmost point post in the inboard annular mounting of apron, can not occupy the module space, improve module space utilization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view illustrating an exploded structure of a battery top cap according to an embodiment of the present invention;

FIG. 2 is an enlarged view at C of FIG. 1;

fig. 3 shows a schematic structural diagram of an annular insulating member provided by an embodiment of the present invention;

fig. 4 is a schematic top view of a battery top cap according to an embodiment of the present invention;

FIG. 5 isbase:Sub>A schematic view ofbase:Sub>A portion of A-A of FIG. 4 in cross-section;

fig. 6 is a partial sectional structural view of B-B in fig. 4.

Description of the reference numerals:

10. a cover plate; 11. a post hole; 111. a limiting groove; 20. a pole column; 21. a second annular boss; 30. an annular insulating member; 31. a limiting bulge; 32. a bump; 33. a first annular boss; 40. a ring-shaped fixing member; 50. a sealing structure; 60. and (5) plastic cement is arranged.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

One embodiment of a battery top cap as shown in fig. 1 to 6 includes: a cover plate 10, a pole post 20 and an annular insulating member 30. The cover plate 10 is provided with a pole post hole 11, and the pole post 20 is inserted into the pole post hole 11. Annular insulating member 30 inserts and locates in utmost point post hole 11, and is located between apron 10 and utmost point post 20, has seted up spacing recess 111 on one in the pore wall of utmost point post hole 11 and the outer wall of annular insulating member 30, is provided with spacing arch 31 on another in the pore wall of utmost point post hole 11 and the outer wall of annular insulating member 30, and spacing recess 111 sets up with spacing arch 31 cooperation.

On utmost point post hole 11's pore wall, and set up spacing recess 111 and spacing arch 31 on the outer wall with pore wall matched with annular insulating part 30 respectively, in order to utilize spacing recess 111 and spacing arch 31 looks joint, realize annular insulating part 30 and apron 10's fixed mounting, avoid annular insulating part 30 at ascending rotation in circumference, and, set up spacing recess 111 or spacing arch 31 on utmost point post hole 11's pore wall, annular insulating part 30 need not to cover to apron 10 on the upper surface, consequently, can not cause the extra occupation to the module space, improve module space utilization.

In the present embodiment, as shown in fig. 1 to 3, the limiting groove 111 is opened on the hole wall of the stud hole 11, and correspondingly, the limiting protrusion 31 is disposed on the outer wall of the annular insulating member 30.

Of course, in other alternative embodiments, the limiting groove 111 may be opened on the outer wall of the annular insulating member 30, and correspondingly, the limiting protrusion 31 is disposed on the hole wall of the pole hole 11.

In this embodiment, as shown in fig. 2 and fig. 3, the limiting groove 111 is provided with a plurality of limiting protrusions 31 at intervals along the circumferential direction of the hole wall of the pole hole 11, the limiting protrusions 31 are provided with a plurality of limiting grooves 111 and a plurality of limiting protrusions 31 at intervals along the circumferential direction of the outer wall of the annular insulating member 30, and the plurality of limiting grooves 111 and the plurality of limiting protrusions 31 are arranged in a one-to-one correspondence manner. The limiting grooves 111 and the limiting protrusions 31 are arranged to be a plurality of, so that the anti-rotation effect of the annular insulating part 30 is guaranteed.

Please refer to fig. 2 and 3, the limiting protrusion 31 is a semi-cylindrical structure, and correspondingly, the limiting groove 111 is a semi-cylindrical groove.

Of course, the limiting protrusion 31 and the limiting groove 111 may have other shapes, and only the outer contour of the limiting protrusion 31 is matched with the groove shape of the limiting groove 111, for example, the limiting protrusion 31 may have a prism-shaped structure, and correspondingly, the limiting groove 111 is configured as a prism-shaped groove body.

As shown in fig. 3 and 6, a protrusion 32 is formed on an outer wall of the annular insulating member 30, the protrusion 32 is disposed near an upper end of the annular insulating member 30, and the protrusion 32 is engaged with an upper surface of the cap plate 10.

The lugs 32 are arranged on the outer wall of the annular insulating part 30, so that the lugs 32 and the upper surface of the cover plate 10 are utilized to form spacing, the annular insulating part 30 is prevented from being separated from the cover plate 10 downwards, and the installation stability of the annular insulating part 30 is ensured.

In the present embodiment, as shown in fig. 3, the protrusions 32 are provided in several numbers, and several protrusions 32 are circumferentially spaced along the outer wall of the annular insulating member 30.

It is noted that, on the outer wall of the annular insulating member 30, the projection 32 is disposed higher than the stopper projection 31.

In the present embodiment, as shown in fig. 3 and 6, the cross section of the projection 32 in the radial direction of the ring-shaped insulator 30 is a triangular cross section, and the tip of the triangular cross section is located at the upper end of the ring-shaped insulator 30. The bump 32 is set to be a triangular cross-section structure with a narrow top and a wide bottom, so that the annular insulating member 30 can be conveniently inserted into the pole post hole 11 from the lower side of the cover plate 10 to be installed while the bump 32 can be in limit abutting contact with the upper surface of the cover plate 10.

It should be noted that, when the annular insulating member 30 is installed in the post hole 11, the annular insulating member 30 may be deformed inward by a certain amount, so that the protrusion 32 smoothly passes through the post hole 11, and the protrusion 32 returns to the outside after completely passing through the post hole 11, so that the protrusion 32 can be in limit contact with the upper surface of the cover plate 10.

As shown in fig. 3, 5 and 6, a first annular boss 33 is further formed on the outer wall of the annular insulating member 30, the outer diameter of the first annular boss 33 is larger than the aperture of the pole hole 11, and the first annular boss 33 abuts against the lower surface of the cover plate 10.

Through the spacing butt of first annular boss 33 and the lower surface formation of apron 10, avoid annular insulating part 30 upwards to wear out in following utmost point post hole 11, further guarantee the stability of annular insulating part 30 installation.

It should be noted that, referring to fig. 6, the protrusion 32 and the first annular protrusion 33 are respectively disposed on two sides of the cover plate 10, so that the protrusion 32 and the first annular protrusion 33 realize the common vertical position limitation of the annular insulating member 30, and ensure the stable connection between the annular insulating member 30 and the cover plate 10.

In this embodiment, the annular insulator 30 is an injection molded one-piece structure.

In the present embodiment, as shown in fig. 5 and 6, the upper end of the annular insulating member 30 is disposed flush with the upper end of the pole 20.

As shown in fig. 5 and 6, a second annular boss 21 is formed on the outer wall of the pole 20, the outer diameter of the second annular boss 21 is larger than the diameter of the pole hole 11, and the second annular boss 21 is located on the lower side of the annular insulating member 30. The battery top cover further comprises a ring-shaped fixing member 40, the ring-shaped fixing member 40 is positioned on the lower side of the cover plate 10, the inner edge of the ring-shaped fixing member 40 is arranged on the lower side of the second ring-shaped boss 21, and the outer edge of the ring-shaped fixing member 40 is connected with the lower surface of the cover plate 10.

Penetrate utmost point post hole 11 with utmost point post 20 from the downside of apron 10 in, utilize second annular boss 21 on utmost point post 20 to carry on spacingly to utmost point post 20 to utilize annular mounting 40 to fix utmost point post 20 at second annular boss 21 and the downside of apron 10, realize utmost point post 20 and the fixed mounting of apron 10, utilize utmost point post 20 self structure and set up and fix utmost point post 20 in the inboard annular mounting 40 of apron 10, can not occupy the module space, improve module space utilization.

As shown in fig. 5 and 6, the battery top cap further includes a sealing structure 50, the sealing structure 50 being disposed between the second annular boss 21 and the annular fixing member 40.

As shown in fig. 1, 5 and 6, the battery top cap further includes a lower plastic 60, and the lower plastic 60 is located at the lower side of the cap plate 10. Specifically, the upper surface of the lower plastic 60 can be disposed to be in contact with the lower surface of the cover plate 10, the lower surface of the ring fixture 40, and the lower surface of the sealing structure 50.

The embodiment also provides a specific implementation mode of the battery, which comprises the battery top cover. The battery top cover can reduce the occupation of the module space and improve the utilization rate of the module space.

When the battery top cover of the embodiment is assembled, firstly, the injection molded annular insulating member 30 penetrates through the pole hole 11 from the lower side of the cover plate 10 upwards, so that the limiting protrusion 31 is matched and clamped with the limiting groove 111, and the lower surface of the bump 32 is in limiting and abutting contact with the upper surface of the cover plate 10; then, the pole 20 is inserted into the annular insulating member 30 from the bottom up, and the sealing structure 50 is mounted on the lower surface of the second annular boss 21; finally, the inner edge of the ring-shaped fixing member 40 after surface injection molding supports the lower end of the ring-shaped insulating member 30 and the lower surface of the sealing structure 50, the outer edge of the ring-shaped fixing member 40 is welded to the lower surface of the cover plate 10, and the lower plastic 60 is mounted.

According to the above description, the present patent application has the following advantages:

1. the limiting groove and the limiting bulge are clamped and connected, so that the annular insulating part and the cover plate are fixedly installed, and the annular insulating part is prevented from rotating in the circumferential direction;

2. the arrangement of the limiting groove or the limiting bulge can not cause the additional occupation of the annular insulating part on the module space, so that the utilization rate of the module space is improved;

3. the upper surface of the cover plate is limited by the bump, so that the annular insulating part is prevented from being separated from the cover plate downwards, and the installation stability of the annular insulating part is ensured.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims

1. A battery top cap, comprising:

the cover plate (10), the pole column hole (11) is opened on the cover plate (10);

the pole (20) is inserted into the pole hole (11);

annular insulating part (30), insert locate in utmost point post hole (11), and be located apron (10) with between utmost point post (20), the pore wall of utmost point post hole (11) with spacing recess (111) have been seted up on one of the outer wall of annular insulating part (30), the pore wall of utmost point post hole (11) with be provided with spacing arch (31) on another in the outer wall of annular insulating part (30), spacing recess (111) with spacing arch (31) cooperation sets up.

2. The battery top cover according to claim 1, wherein a plurality of limiting grooves (111) and limiting protrusions (31) are correspondingly arranged, and the plurality of limiting grooves (111) and the plurality of limiting protrusions (31) are arranged at intervals along the circumferential direction.

3. The battery top cover according to claim 1 or 2, characterized in that a bump (32) is formed on the outer wall of the annular insulating member (30), the bump (32) is arranged near the upper end of the annular insulating member (30), and the bump (32) is clamped with the upper surface of the cover plate (10).

4. The battery top cap according to claim 3, wherein the cross section of the projection (32) in the radial direction of the annular insulating member (30) is a triangular cross section, and the tip of the triangular cross section is located at the upper end of the annular insulating member (30).

5. The battery top cap according to claim 1 or 2, characterized in that a first annular boss (33) is further formed on the outer wall of the annular insulating member (30), the outer diameter of the first annular boss (33) is larger than the bore diameter of the pole hole (11), and the upper surface of the first annular boss (33) abuts against the lower surface of the cover plate (10).

6. Battery top cap according to claim 1 or 2, characterized in that the annular insulating member (30) is an injection molded one-piece structure.

7. The battery top cap according to claim 1 or 2, characterized in that the upper end of the annular insulating member (30) is disposed flush with the upper end of the pole (20).

8. The battery top cover according to claim 1 or 2, characterized in that a second annular boss (21) is formed on the outer wall of the pole (20), the outer diameter of the second annular boss (21) is larger than the aperture of the pole hole (11), and the second annular boss (21) abuts against the annular insulating member (30); the battery top cover further comprises an annular fixing piece (40), the annular fixing piece (40) is located on the lower side of the cover plate (10), the inner edge of the annular fixing piece (40) is arranged on the lower side of the second annular boss (21), and the outer edge of the annular fixing piece (40) is connected with the lower surface of the cover plate (10).

9. The battery top cap of claim 8, further comprising a sealing structure (50), the sealing structure (50) being disposed between the second annular boss (21) and the annular securing member (40).

10. A battery comprising the battery top cap of any one of claims 1-9.