CN209786066U

CN209786066U - Battery seal nail, cover plate assembly and battery

Info

Publication number: CN209786066U
Application number: CN201920547344.2U
Authority: CN
Inventors: 廖霞霞; 张晓云; 秦伟贤; 吴军; 李明
Original assignee: Zhongxing High Energy Technology Co Ltd
Current assignee: Zhongxing High Energy Technology Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2019-12-13
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a sealed nail, apron subassembly and battery of battery, sealed nail include with the sealed sealing of entrance in notes liquid hole of battery, and stretch into annotate the downthehole portion of sealing in advance of liquid, seal in advance with annotate liquid hole interference fit, just seal in advance be equipped with the inside communicating passageway of battery. The utility model discloses sealed nail can avoid the sealing to fall into the notes liquid hole uncontrollably, has guaranteed going on smoothly that the helium fills.

Description

battery seal nail, cover plate assembly and battery

Technical Field

The utility model relates to a battery, in particular to sealed nail, apron subassembly and battery of battery.

Background

The finished battery has a high risk if it leaks, and in order to ensure the quality of the battery, the battery must be subjected to an air tightness test before shipment. The battery airtightness detection needs to take negative pressure at the liquid injection hole after the battery is injected with liquid, then the sealing nail is plugged into the liquid injection hole matched with the sealing nail, and helium is filled into the liquid injection hole plugged into the sealing nail, so that a subsequent helium detector can conveniently detect whether the finished battery leaks gas. The structure of the existing sealing nail is shown in figure 1, the diameter of the upper part a of the sealing nail is larger than that of the lower part b, the larger end of the diameter of the upper part a is in interference fit with the liquid injection hole, and the small diameter part of the lower part b is in clearance fit with the liquid injection hole, so that equipment for plugging the sealing nail is easy to plug the large-diameter end of the sealing nail into the liquid injection hole, helium injection frequency on a production line is failed, helium cannot be injected normally, and further, a subsequent helium detector cannot detect whether a battery leaks gas or not.

SUMMERY OF THE UTILITY MODEL

in order to solve the technical problem, the embodiment of the utility model provides a sealed nail, apron subassembly and battery of battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

The embodiment of the utility model provides a battery seal nail, seal nail include with the sealed sealing of the entrance of the notes liquid hole of battery to and stretch into the pre-sealing in the notes liquid hole, pre-sealing with annotate the interference fit of liquid hole, and the pre-sealing is equipped with the inside communicating passageway of battery; the sealing nail is a rotating body, and the maximum diameter of the pre-sealing part is equal to that of the sealing part.

In the above scheme, the channel is a groove formed on the peripheral side of the pre-sealing part, or a hole leading from the center to the peripheral side of the pre-sealing part.

In the above scheme, the seal nail further comprises a guide portion, and the guide portion is located at one end, far away from the seal portion, of the pre-seal portion.

In the above scheme, the sealing nail is a rubber piece or a composite piece of rubber and fiber materials.

In the above scheme, one or more than two channels are arranged on the pre-sealing part at intervals and uniformly distributed along the peripheral side.

The embodiment of the utility model provides a still provide an apron subassembly, the apron subassembly is including apron and any kind of above-mentioned sealed nail, be equipped with on the apron and annotate the liquid hole, sealed nail wears to locate annotates the liquid hole.

In the above scheme, the apron subassembly still includes the gasket, still be equipped with on the apron with annotate the communicating seal groove in liquid hole, the seal groove is located annotate the top in liquid hole, the gasket is installed in the seal groove.

An embodiment of the utility model provides a battery is still provided, battery includes electric core, shell and any kind of above-mentioned apron subassembly, electric core is located in the shell, the apron unit mount be in on the shell with will electric core is sealed in the shell.

The utility model provides a sealed nail, apron subassembly and battery of battery, sealing are used for sealed notes liquid hole, and when sealed nail was plugged in and is annotated the liquid hole, the portion of sealing in advance can make sealed nail keep the current position through with annotate liquid hole interference fit, and can not continue to sink, avoids the sealing to plug up and annotates the liquid hole and influence filling of helium. Helium gas enters the inside of the battery through a passage on the peripheral side of the sealing portion. Therefore, the utility model discloses sealed nail can avoid the sealing to fall into the notes liquid hole uncontrollably, has guaranteed going on smoothly that the helium fills.

Drawings

FIG. 1 is a schematic view of an alternative configuration of a prior art seal nail;

FIG. 2 is a schematic view of an alternative structure of the sealing nail according to the embodiment of the present invention in a normal use state;

FIG. 3 is a schematic structural view of the seal nail of FIG. 2 after being turned 180 degrees;

FIG. 4 is a schematic view of another alternative structure of the sealing nail according to the embodiment of the present invention in a normal use state;

FIG. 5 is a schematic structural view of the seal nail of FIG. 4 after being turned 180 degrees;

fig. 6 is a schematic diagram of an alternative structure of a battery according to an embodiment of the present invention.

Reference numerals: a seal nail 10; a seal portion 11; a pre-sealing section 12; a groove 121; an aperture 122; an identifier 123; a guide portion 13; a cover plate assembly 20; a cover plate 21; a sealing sheet 22; a liquid injection hole 23; a seal groove 24; a housing 30.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, belong to the scope of protection of the invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 2.

The embodiment of the utility model provides a sealed nail of battery, sealed nail 10 include with the sealed sealing 11 of entrance of notes liquid hole 23 of battery to and stretch into the portion 12 of sealing in advance in annotating liquid hole 23, portion 12 of sealing in advance and annotate liquid hole 23 interference fit, and portion 12 of sealing in advance is equipped with the inside communicating passageway of battery.

The completion is annotated the liquid back, annotate liquid hole 23 department and take out the negative pressure, then the equipment of stopper sealed nail 10 fills in sealed nail 10 in annotating liquid hole 23, because the portion of sealing 12 and annotating liquid hole 23 interference fit in advance, sealed nail 10 can rely on the portion of sealing 12 to stop in annotating liquid hole 23 in advance, at this moment, liquid hole 23 is kept away from to sealing 11, owing to there being the passageway, annotate liquid hole 23 and be in half encapsulated situation, the helium passes through the passageway and enters into in the battery, the helium is filled the completion back, continue to fill in sealed nail 10, it is sealed to annotate liquid hole 23 until sealing 11. Therefore, the utility model discloses sealed nail 10 has avoided making the helium fill the battery smoothly to the influence that causes among the helium filling process, and the helium check out test set of having guaranteed the epilogue can hundredth detect out whether the finished product battery leaks gas, the potential safety hazard of the battery that has significantly reduced.

In some embodiments of the present invention, the channel is a groove 121 formed on the circumferential side of the pre-sealing portion 12, or a hole 122 leading from the center to the circumferential side of the pre-sealing portion 12. Fig. 2 and 3 exemplarily show a channel in the form of a groove 121, and fig. 4 and 5 exemplarily show a channel in the form of a hole 122. Further, the pre-sealing portion 12 is provided with one or more than two passages uniformly distributed along the circumferential side. As shown in fig. 2 and 3, three grooves 121 are provided at regular intervals on the circumferential side of the pre-seal portion 12, and the shape of the grooves 121 is a combination of a rectangle and an arc. It is understood that the shape of the channel may be any shape such as spiral, rectangular, circular, polygonal, etc.

Generally, the shape of the sealing nail 10 matches with the shape of the injection hole 23, in some embodiments of the present invention, the sealing nail 10 is a rotating body, as shown in fig. 2 and 3, the sealing nail 10 is a cylindrical solid cylinder, for facilitating the equipment identification to automatically install the sealing nail 10, the top end of the sealing part 11 is provided with an identifier 123 for the equipment identification. Further, the maximum diameter of the pre-seal portion 12 is equal to the maximum diameter of the seal portion 11. As shown in fig. 2 to 5, the shape of the seal portion 11 is a cylinder, and the maximum diameter of the seal portion 11 is the diameter of the cylinder. The seal portion 11 may have a truncated cone shape with a large top and a small bottom, or other shapes. The sealing part 11 and the liquid injection hole 23 are also in interference fit. Generally, the seal pin 10 is a rubber member, or a composite member of rubber and fiber material. For example, the sealing nail 10 is a rubber plug made of silicon rubber, polyurethane rubber, nitrile rubber, nylon, fluororubber, etc. Or the sealing nail 10 made of the rubber, the asbestos fiber, the cotton fiber, the hemp fiber and the like has certain elasticity, so that the sealing effect of the sealing nail 10 is further ensured.

In some embodiments of the present invention, the sealing nail 10 further includes a guiding portion 13, and the guiding portion 13 is located at one end of the pre-sealing portion 12 away from the sealing portion 11. As shown in FIGS. 2 and 3, the sealing part 11 and the guide part 13 are respectively located at both ends of the pre-sealing part 12, and the guide part 13 is in the shape of a truncated cone with a large top and a small bottom, so that when the sealing nail 10 is inserted, the sealing nail 10 can more easily enter the injection hole 23 by the guide part 13.

the embodiment of the utility model provides a still provide a apron subassembly, apron subassembly 20 is equipped with on the apron 21 and annotates liquid hole 23 including apron 21 and any kind of above-mentioned sealed nail 10, sealed nail 10 wears to locate to annotate liquid hole 23.

Further, the cover plate assembly 20 further comprises a sealing sheet 22, the cover plate 21 is further provided with a sealing groove 24 communicated with the liquid injection hole 23, the sealing groove 24 is located above the liquid injection hole 23, and the sealing sheet 22 is installed in the sealing groove 24. As shown in fig. 6, the sealing groove 24 and the liquid injection hole 23 on the cover plate 21 are concentrically arranged, and when sealing, the sealing nail 10 is firstly plugged into the liquid injection hole 23, the liquid injection hole 23 is preliminarily sealed, the electrolyte in the battery is prevented from flowing out, and then the sealing sheet 22 is welded on the sealing groove 24 above the sealing nail 10 for further sealing.

The embodiment of the utility model provides a battery is still provided, battery include electric core (not shown), shell 30 and above-mentioned apron subassembly 20, and electric core is located shell 30, and apron subassembly 20 is installed on shell 30 in order to seal electric core in shell 30. Fig. 4 shows a casing 30 with an upper opening, a battery cell is put into the casing 30 through the opening, a cover plate assembly 20 is installed at the opening of the casing 30 to seal the battery cell in the casing 30, and electrolyte is injected into the casing 30 through an injection hole 23 on the cover plate 21.

The features disclosed in the several product embodiments of the present invention can be combined arbitrarily without conflict to obtain new product embodiments. The product includes a sealing nail, a cap plate assembly or a battery.

Other structures and operations of the cap plate assembly 20 and the battery according to the embodiment of the present invention are understood and easily accomplished by those skilled in the art, and thus will not be described in detail.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The sealing nail of the battery is characterized by comprising a sealing part and a pre-sealing part, wherein the sealing part is sealed at an inlet of a liquid injection hole of the battery, the pre-sealing part extends into the liquid injection hole, the pre-sealing part is in interference fit with the liquid injection hole, and the pre-sealing part is provided with a channel communicated with the interior of the battery; the sealing nail is a rotating body, and the maximum diameter of the pre-sealing part is equal to that of the sealing part.

2. The seal nail according to claim 1, wherein the passage is a groove opened on a peripheral side of the pre-seal portion, or a hole opened from a center to the peripheral side of the pre-seal portion.

3. The sealing nail of claim 1, further comprising a guide portion at an end of the pre-sealing portion distal from the sealing portion.

4. The sealing nail according to claim 1, wherein the sealing nail is a rubber member or a composite member of rubber and fiber material.

5. The seal nail according to claim 1, wherein the pre-seal portion is provided with one or more than two of the passages at circumferentially spaced intervals.

6. A cover plate component, characterized in that, the cover plate component comprises a cover plate and the sealing nail of any one of claims 1 to 5, wherein, the cover plate is provided with a liquid injection hole, and the sealing nail is arranged through the liquid injection hole.

7. The cover plate assembly as claimed in claim 6, further comprising a sealing sheet, wherein the cover plate is further provided with a sealing groove communicated with the liquid injection hole, the sealing groove is located above the liquid injection hole, and the sealing sheet is installed in the sealing groove.

8. A battery comprising a cell, a housing, and the cover assembly of any of claims 6 or 7, the cell being located within the housing, the cover assembly being mounted on the housing to seal the cell within the housing.