CN210156439U

CN210156439U - Insulating assembly, top cap and battery

Info

Publication number: CN210156439U
Application number: CN201921201400.3U
Authority: CN
Inventors: 朱鹏翔; 孙飞; 舒宽金; 李开波; 何巍; 李星
Original assignee: Renata AG
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-03-17
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses an insulating element, top cap and battery, insulating element includes the insulating plastic as the upper cover and the holder as the collet, insulating plastic includes roof and lateral wall, the roof includes first face and second face, the laminating of the top cap piece of first face and top cap, the protruding edge of establishing at the second face of lateral wall, offer the first through-hole that is used for installing utmost point post on the roof, the second face is provided with a plurality of connecting grooves, the holder includes the bottom plate and the protruding a plurality of spliced poles of establishing on the same side of bottom plate, the spliced pole is kept away from the one end of bottom plate and is inserted in the connecting groove and with insulating plastic ultrasonic welding. The utility model discloses an insulating assembly is used for being connected with insulating plastic through set up the spliced pole on the retainer, and its simple structure, the manufacturing degree of difficulty are little, generation efficiency and yields are high, and the volume that insulating assembly occupied is less, makes the space usage rate of battery high, simultaneously, still has the assembly simple, the sound construction, insulating effectual advantage.

Description

Insulating assembly, top cap and battery

Technical Field

The utility model relates to a battery technology field especially relates to an insulating component, top cap and battery.

Background

The top cap of current square aluminum-shell battery adopts the insulator of plastic material to keep apart top cap piece and utmost point post usually, prevent top cap piece and utmost point post electric conductance, the insulator is including being located the outside last insulating plastic of battery and being located the inside lower insulating plastic of battery, be provided with spare parts such as utmost point post on the lower insulating plastic, the utmost point ear that draws from rolling up the core needs and utmost point post welding, in order to avoid the inside book core of battery to touch down the utmost point post on the insulating plastic and take place the short circuit, still can set up the holder on the insulating plastic down and keep apart roll core and utmost point post, the holder plays the effect that supports the roll core simultaneously, the restriction rolls up the core.

The existing retainer is connected with lower insulating plastic by adopting a buckle connection mode, an opening is formed in the side face of the lower insulating plastic, a clamping hook is arranged on the retainer, and the clamping hook is clamped into the opening to be fixed, but the buckle structure has more defects. Firstly, the buckle structure is not easy to machine and form, and burrs and the like are easy to occur in the manufacturing process due to the complex shape, so that the yield is reduced; secondly, the pothook is easy to kick back when being installed, and breaks away from the limitation of the opening, thereby causing the situation of not-in-place assembly and influencing the quality of the battery.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide an insulating assembly, its simple structure, the degree of difficulty of manufacturing and installation is little, small, with low costs and insulating properties is good.

A second object of the utility model is to provide a top cap, its assembly process is simple, the yields is high.

A third object of the present invention is to provide a battery, which has high energy density.

To achieve the purpose, the utility model adopts the following technical proposal:

on the one hand, an insulating assembly is provided for constitute the top cap of battery, include the insulating plastic as the upper cover and the holder as the collet, insulating plastic includes roof and lateral wall, the roof includes first face and second face, first face with the top cap piece laminating of top cap, the protruding establishment of lateral wall the second facial edge, set up the first through-hole that is used for installing utmost point post on the roof, the second face is provided with a plurality of connecting grooves, the holder includes the bottom plate and the protruding establishment a plurality of spliced poles in the same face of bottom plate, the spliced pole is kept away from the one end of bottom plate inserts in the connecting groove and with insulating plastic ultrasonic bonding.

As a preferred scheme of the utility model, first breach has been seted up on the lateral wall, utmost point ear passes first breach with utmost point post is connected.

As an optimized proposal of the utility model, the bottom plate is provided with a second through hole.

As an optimized scheme of the utility model, the second through-hole includes a plurality of slotted holes, the slotted hole is parallel to each other.

As a preferred scheme of the utility model, the second breach has been seted up on the bottom plate, utmost point ear passes the second breach with utmost point post is connected.

As a preferred scheme of the utility model, the lateral wall is kept away from the terminal surface of roof one end with the bottom plate deviates from the one side parallel and level of spliced pole.

As an optimized scheme of the utility model, the roof with the lateral wall is connected perpendicularly, the roof with the junction of lateral wall is provided with a plurality of strengthening ribs.

As an optimized scheme of the utility model, insulating plastic with the holder is integrative injection moulding.

On the other hand, a top cover is provided, which comprises a top cover plate, wherein the insulating component in any technical scheme is arranged on one surface of the top cover plate close to the inside of the battery.

In addition, still provide a battery, include above-mentioned technical scheme the top cap.

The utility model has the advantages that:

1. through set up the spliced pole on the retainer and be used for being connected with insulating plastic, compare in the insulating subassembly that adopts buckle structural connection, its simple structure, the manufacturing degree of difficulty is little, generation efficiency and yields are high.

2. Because buckle structure's opening can only set up in the side of insulating plastic, consequently insulating plastic need possess higher height in order to guarantee open-ended intensity, the utility model discloses a spliced pole is direct to be connected with the roof of insulating plastic, therefore insulating assembly can set up to lower height, and the volume that occupies is less, makes the space usage rate of battery high.

3. The insulating assembly is simple to assemble, firm in structure and good in insulating effect.

Drawings

Fig. 1 is a schematic perspective view of an insulation assembly according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an insulation assembly according to an embodiment of the present invention;

fig. 3 is a perspective view of a retainer according to an embodiment of the present invention;

fig. 4 is a side view of an insulation assembly in accordance with an embodiment of the present invention when connected to a top cover sheet.

Fig. 5 is a side view of an insulation assembly according to an embodiment of the present invention with a tab attached;

FIG. 6 is a sectional view taken along line A-A of FIG. 5;

fig. 7 is a side view of an insulation assembly with a tab attached according to another embodiment of the present invention;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

in FIGS. 1-8:

1. insulating plastic cement; 11. a top plate; 111. a connecting groove; 12. a side wall; 13. a first through hole; 14. reinforcing ribs; 100. a first notch;

2. a holder; 21. a base plate; 22. connecting columns; 23. a second through hole; 200. a second notch;

3. a pole column; 4. a tab; 5. a winding core; 6. a top flap.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

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 word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 to 6, the insulating assembly of this embodiment is arranged on the top cover plate 6, and is composed of insulating plastic 1 as an upper cover and a holder 2 as a bottom support, the insulating plastic 1 includes a top plate 11 and a side wall 12, the top plate 11 includes a first surface and a second surface, the first surface is attached to the top cover plate 6, the side wall 12 is arranged at the edge of the second surface in a protruding manner, a first through hole 13 for installing a terminal post 3 is arranged on the top plate 11, the second surface is provided with a plurality of connecting grooves 111, the holder 2 includes a bottom plate 21 and a plurality of connecting posts 22 arranged on the same surface of the bottom plate 21 in a protruding manner, one end of the connecting post 22 far away from the bottom plate 21 is inserted into the.

The insulating assembly of this embodiment is through setting up spliced pole 22 on retainer 2 to correspond spliced pole 22 and set up connecting groove 111 and realize the connection of retainer 2 and insulating plastic 1 on insulating plastic 1, compare in the form that adopts buckle structural connection, seted up the fixed opening of a plurality of confession pothooks from on insulating plastic 1, the phenomenon that the pothook easily breaks away from among the buckle structure has been avoided, make the insulating assembly's of this embodiment simple structure, it is little to make the degree of difficulty, generation efficiency and yields are high.

In addition, since a plurality of openings do not need to be formed on the side wall 12, the height of the side wall 12 can be set lower, so that the height of the insulating plastic 1 of the embodiment is lower, the volume occupied by the insulating assembly of the embodiment is smaller, and the space utilization rate of the battery is high.

By means of the positioning function of the connecting groove 111, the connecting column 22 can be quickly and accurately assembled in place, so that the insulating assembly of the embodiment is simple to assemble and firm to fix, the insulating plastic 1 and the retainer 2 are not easy to loosen, and the insulating effect is good.

Preferably, the connecting column 22 and the insulating plastic 1 are ultrasonically welded, the ultrasonic welding process is rapid and firm in connection, and the ultrasonic welding method is applied to the assembly process of the top cover, so that high production efficiency and good assembly quality can be obtained.

The step of ultrasonic welding comprises:

firstly, assembling the retainer 2 on the insulating plastic 1 by using a manipulator with a vacuum chuck, and inserting the connecting column 22 into the connecting groove 111;

then, the welding head moves to the first surface of the insulating plastic 1, ultrasonic welding is started on the back surface of the connecting groove 111, all the connecting columns 22 are welded and fixed in the connecting groove 111, and then the next process is performed after welding is finished.

Optionally, the connecting column 22 is bonded to the insulating plastic 1, and the bonding agent used for bonding is electrolyte-resistant bonding agent, so as to ensure lasting and firm bonding.

Preferably, the side wall 12 is provided with a first notch 100, and the tab 4 passes through the first notch 100 and is connected with the pole 3. In the process of battery assembly, in order to put the roll core 5 into the battery shell and smoothly weld the tab 4 led out from the roll core 5 and the pole 3, the tab 4 needs to be bent into a certain shape, and meanwhile, the tab 4 needs to keep a certain distance from the battery shell to prevent short circuit, so that a channel for the tab 4 to enter needs to be formed on the insulating assembly.

Preferably, the bottom plate 21 is provided with a second through hole 23. Because the electrolyte in the battery can flow around because of the movement or position change of the battery, if a large amount of electrolyte is gathered in the insulating assembly and cannot flow back to the winding core 5 in time, the electrochemical reaction in the battery can be influenced, so that the performance of the battery is weakened, the electrolyte flowing into the insulating assembly can quickly flow back to the winding core 5 by arranging the second through hole 23, and the electrochemical reaction in the battery is ensured to be fully and normally carried out.

Further, second through-hole 23 includes a plurality of slotted holes that are parallel to each other, because the space on bottom plate 21 is limited, and bottom plate 21 need support and roll core 5, plays the effect that the great range of the core 5 that takes place to rock of restriction in battery case, prevents to roll core 5 or other spare parts impaired. Therefore, the bottom plate 21 needs to have a certain strength and cannot be easily deformed to a large extent. And a plurality of long round holes are arranged in parallel at intervals, so that the damage degree to the structure of the bottom plate 21 is small compared with the situation that one large hole is arranged, the bottom plate 21 has higher bending resistance, and deformation is not easy to occur.

As shown in fig. 7 and 8, in other embodiments, a second notch 200 is formed on the base plate 21, and the tab 4 passes through the second notch 200 to connect with the pole 3. According to the difference of the leading-out position of the pole ear 4 from the winding core 5, the position of the pole ear 4 entering the insulation component can be flexibly selected. In the present embodiment, since the tab 4 is shielded by the side wall 12, the tab 4 is well isolated from the battery case, and has good insulation performance.

In other embodiments, the bottom plate 21 is provided with a third through hole, and the tab 4 is connected to the pole 3 after passing through the third through hole. In the present embodiment, the third through hole also plays a role of a diversion hole for the electrolyte of the second through hole 23. Through setting up the third through-hole, exert the effect in water conservancy diversion hole when providing the penetrating port for utmost point ear 4, reduced the destruction to insulating

plastic

1 or 2 overall structure of holder to a great extent, make the mechanical strength of the insulating assembly of this embodiment higher, non-deformable.

Preferably, the terminal surface that roof 11 one end was kept away from to lateral wall 12 deviates from the one side parallel and level of spliced pole 22 with bottom plate 21 to the one side that the top cap piece 6 was kept away from to the insulating assembly that makes this embodiment is a smooth plane, thereby provides good support to rolling core 5, restricts the removal of rolling core 5 effectively, prevents that rolling core 5 from leading to self or other spare parts impaired because of the range of motion is too big.

Preferably, the top plate 11 is vertically connected with the side wall 12, and a plurality of reinforcing ribs 14 are arranged at the connection part of the top plate 11 and the side wall 12. Because the terminal surface of lateral wall 12 needs to support and rolls up core 5, consequently set up lateral wall 12 to be perpendicular with roof 11, prevent that lateral wall 12 from taking place the deformation because of the pressurized, and setting up of strengthening rib 14 has improved the holistic structural strength of insulating plastic 1, makes insulating plastic 1 be difficult to warp.

Preferably, insulating plastic 1 and holder 2 are integrative injection moulding, because of the requirement of insulating properties, insulating assembly adopts the plastics material preparation, and integrative injection moulding has the advantage that production efficiency is high, the uniformity is good to assembly work after being convenient for promotes the assembly efficiency and the quality of battery.

The embodiment of the utility model discloses a top cap is still included, including top cap piece 6, the inside one side of top cap piece 6 near the battery is provided with the insulating assemblies of any embodiment of the aforesaid. Because the assembly process of insulating subassembly is simple, the structure is firm, makes the top cap of this embodiment have the assembly efficiency height, advantage that insulating properties is good.

The embodiment of the utility model discloses a battery is still included, because the volume of insulating subassembly is less, the battery inner space that occupies is also less for the battery that adopts this embodiment top cap can possess higher energy density.

As a preferred embodiment of the present invention, in the description of the present specification, reference to the description of the terms "preferred", "optional", and the like, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present 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 embodiments are only used to illustrate the detailed embodiments of the present invention, and the present invention is not limited to the above detailed embodiments, i.e. the present invention must not be implemented depending on the detailed embodiments. It should be clear to those skilled in the art that any improvement of the present invention, to the equivalent replacement of each raw material of the present invention, the addition of auxiliary components, the selection of specific modes, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. The utility model provides an insulating element for constitute the top cap of battery, its characterized in that, include the insulating plastic as the upper cover and the holder as the collet, insulating plastic includes roof and lateral wall, the roof includes first face and second face, first face with the top cap piece laminating of top cap, the protruding establishment of lateral wall the second facial edge, set up the first through-hole that is used for installing utmost point post on the roof, the second face is provided with a plurality of connecting grooves, the holder includes the bottom plate and the protruding establishment a plurality of spliced poles in the same side of bottom plate, the spliced pole is kept away from the one end of bottom plate inserts in the connecting groove and with insulating plastic ultrasonic bonding.

2. The insulation assembly of claim 1, wherein the sidewall has a first notch formed therein, and a tab is connected to the pole through the first notch.

3. The insulation assembly of claim 1 wherein said base plate defines a second through-hole.

4. The insulation assembly of claim 3 wherein said second through hole comprises a plurality of oblong holes, said oblong holes being parallel to each other.

5. The insulation assembly of claim 1, wherein the base plate has a second notch formed therein, and the tab passes through the second notch to connect with the pole.

6. The insulation assembly of claim 1 wherein the end surface of said side wall at the end remote from said top plate is flush with the side of said bottom plate remote from said connecting stud.

7. The insulation assembly of claim 1 wherein said top plate is perpendicularly attached to said side walls and a plurality of ribs are provided at the attachment of said top plate to said side walls.

8. The insulation assembly of claim 1 wherein said insulating plastic and said cage are injection molded in one piece.

9. A top cover comprising a top cover sheet, wherein a side of the top cover sheet adjacent to the interior of a battery is provided with an insulating assembly as claimed in any one of claims 1 to 8.

10. A battery comprising the cap of claim 9.