CN217334360U

CN217334360U - Battery with a battery cell

Info

Publication number: CN217334360U
Application number: CN202220045498.3U
Authority: CN
Inventors: 许久凌; 张璐璐
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-08-30
Anticipated expiration: 2032-01-07

Abstract

The application relates to the technical field of batteries and discloses a battery. The battery comprises a shell and a sealing rubber nail; the shell is provided with a liquid injection hole, and the liquid injection hole extends towards the interior of the battery; the sealing rubber nail is inserted into the liquid injection hole and is in interference fit with the liquid injection hole, and the contact depth of the liquid injection hole and the sealing rubber nail is 0.5-2.5 mm along the extension direction of the liquid injection hole. In the battery that this application provided, annotate the liquid hole and extend to battery inside, the degree of depth of annotating the liquid hole is great, and then make sealed gluey nail and annotate the liquid hole and have darker contact along annotating liquid hole extending direction, can improve area of contact between them, it is concrete, both the setting of the depth of contact is in 0.5mm-2.5mm within range, the area of contact that this depth of contact h formed makes and has great damping between the two, can guarantee joint strength between them, avoid sealed gluey nail to deviate from, effectively improve the sealed effect of annotating the liquid hole.

Description

Battery with a battery cell

Technical Field

The utility model relates to a battery technology field especially relates to a battery.

Background

Among the prior art, the notes liquid hole of battery adopts sealed glue nail to seal, because sealed glue nail is not enough with the joint strength who annotates the liquid hole, under the vibrations operating mode, appears sealed bad even problem that sealed glue nail drops easily, and then leads to annotating the sealed inefficacy of liquid hole.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery for improve the sealed yield in battery notes liquid hole.

Specifically, the present application provides a battery comprising a housing and a sealing peg; the shell is provided with a liquid injection hole, and the liquid injection hole extends towards the interior of the battery; the sealing rubber nail is inserted into the liquid injection hole and is in interference fit with the liquid injection hole, and the contact depth of the liquid injection hole and the sealing rubber nail is 0.5-2.5 mm along the extension direction of the liquid injection hole.

In the battery that this application provided, annotate the liquid hole and extend to battery inside, the degree of depth of annotating the liquid hole is great, and then make sealed gluey nail and annotate the liquid hole and have darker contact along annotating liquid hole extending direction, can improve area of contact between them, it is concrete, both the setting of the depth of contact is in 0.5mm-2.5mm within range, the area of contact that this depth of contact h formed makes and has great damping between the two, can guarantee joint strength between them, avoid sealed gluey nail to deviate from, effectively improve the sealed effect of annotating the liquid hole.

Drawings

For a better understanding of the present invention, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and some relevant components may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art.

Fig. 1 is a schematic diagram of a partial cross-sectional structure of a battery according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a sealing rubber nail of a battery according to an embodiment of the present invention;

fig. 3 is a schematic view of a cross-sectional structure of a sealing rubber nail of a battery according to an embodiment of the present invention.

Reference numerals:

1-sealing the rubber nails; 11-a stem portion; 12-a cap; 13-a bump; 2-sealing the nail; 3-liquid injection hole;

4-a housing; 41-a sink portion; 5-a support member.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In a first aspect, the present application provides a battery, as shown in fig. 1, 2 and 3, comprising a housing 4 and a sealing peg 1; the shell 4 is provided with a liquid injection hole 3, and the liquid injection hole 3 extends into the battery; the sealing rubber nail 1 is inserted into the liquid injection hole 3 and is in interference fit with the liquid injection hole 3, and the contact depth h between the liquid injection hole 3 and the sealing rubber nail 1 along the extension direction of the liquid injection hole 3 is 0.5mm-2.5mm, for example, specifically, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5 mm.

In the battery that this application provided, annotate liquid hole 3 and extend to the battery is inside, the degree of depth of annotating liquid hole 3 is great, and then make sealed glue nail 1 and annotate liquid hole 3 and have darker contact along annotating liquid hole 3 extending direction, can improve area of contact between them, it is concrete, both depth of contact h set up at 0.5mm-2.5mm within range, the area of contact that this depth of contact h formed makes and has great damping between the two, can guarantee joint strength between them, avoid sealed glue nail 1 to deviate from, effectively improve the sealed effect of annotating liquid hole 3.

In some embodiments, as shown in fig. 1, the liquid injection hole 3 is punched from the outer case 4 of the battery into the battery. By adopting the stamping mode, the battery shell 4 can extend downwards to form the liquid injection hole 3 with larger depth, and the preparation process for integrally stamping the liquid injection hole 3 is relatively simple, so that the production cost can be reduced.

Illustratively, the thickness of the portion of the case 4 for forming the pour hole 3 is 0.1mm to 0.5mm, and may be, for example, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5 mm.

The thickness of the part of the case 4 for forming the injection hole 3 is set to 0.1mm to 0.5mm, which is relatively thin, and which facilitates punching and forming, and further facilitates machining of the injection hole 3, and facilitates machining of the injection hole 3 having a large extended depth.

Illustratively, the casing 4 comprises at least a two-part casing, wherein the entire thickness of the casing provided with the liquid injection hole 3 is 0.1mm to 0.5 mm. Thus, the liquid injection hole 3 can be punched and formed conveniently, and the energy density of the battery can be improved.

Illustratively, the battery case 4 may include a lower case and a cover plate. The liquid injection hole 3 may be provided in the cover plate, and at this time, the thickness of the cover plate may be set to 0.1mm to 0.5mm, and the liquid injection hole 3 may be formed by press-molding the cover plate.

In some embodiments, as shown in fig. 1, 2 and 3, the sealant nail 1 includes a stem portion 11 and a cap 12 at one end of the stem portion 11, the stem portion 11 penetrates through the injection hole 3, that is, the stem portion 11 completely penetrates through the injection hole 3, in this case, the contact depth h between the injection hole 3 and the sealant nail 1 is determined by the depth of the injection hole 3, and the greater the depth of the injection hole 3 is, the greater the contact depth h between the injection hole 3 and the sealant nail 1 is, and the greater the connection strength between the two is.

Specifically, in this embodiment, the depth of the injection hole 3 is 0.5mm to 2.5mm, and correspondingly, the contact depth h between the injection hole 3 and the sealing rubber nail 1 is also 0.5mm to 2.5 mm.

Preferably, the depth of the liquid injection hole 3 is 0.5mm-2.5mm, and the contact depth h of the liquid injection hole 3 and the sealing rubber nail 1 is also 0.7mm-1.5 mm.

In some embodiments, as shown in fig. 1, the case 4 is provided with a depressed portion 41 depressed toward the inside of the battery, and the liquid injection hole 3 is provided on the depressed portion 41; in other words, the case 4 is recessed into the battery to form the depressed portion 41, a part of the case 4 above the depressed portion 41 extends further into the battery to form the liquid inlet 3, and the depressed portion 41 and the liquid inlet 3 extend in a step-like manner into the battery.

Illustratively, as shown in fig. 1 and 2, the cap 12 of the sealing rubber nail 1 is accommodated in a space surrounded by the sunken portion 41. Like this, can avoid sealed cap 12 of glue nail 1 to bulge the battery body, can improve the holistic space utilization of battery to can avoid sealed cap 12 of glue nail 1 to produce with other structures and interfere, improve sealed glue nail 1 and annotate liquid hole 3 connection stability.

In some embodiments, as shown in fig. 1, the battery of the present application may further include a support member 5 provided inside the casing 4, the support member 5 being provided around the pour hole 3 for supporting the casing 4 around the pour hole 3. The supporting piece 5 can support the liquid injection hole 3 and the shell 4 around the liquid injection hole, so that the liquid injection hole 3 is prevented from deforming; therefore, when the sealing rubber nail 1 is clamped into the liquid injection hole 3 by force, the deformation of the liquid injection hole 3 or the sealing rubber nail 1 entering the battery to cause sealing failure can be avoided.

In some embodiments, as shown in fig. 1, the battery of the present application further includes a sealing nail 2, and the sealing nail 2 covers the sealing rubber nail 1 and the injection hole 3.

In the embodiment, the sealing rubber nail 1 and the sealing nail 2 are matched to seal the liquid injection hole 3 of the battery; the sealing rubber nail 1 is inserted into the liquid injection hole 3 and is in interference fit with the liquid injection hole 3 to realize sealing and plugging of the liquid injection hole 3; sealed nail 2 cover is in sealed glue nail 1 and annotate liquid hole 3 top for prevent that sealed glue nail 1 is impaired or sealed glue nail 1 from deviating from in annotating liquid hole 3 and lead to sealed inefficacy, can further seal and protect annotating liquid hole 3 and sealed glue nail 1.

Illustratively, as shown in fig. 1, the sealing nail 2 is a metal piece, and the sealing nail 2 is welded on the outer shell 4; specifically, the sealing nail 2 is hermetically welded with the battery case 4 around the liquid injection hole 3.

In some embodiments, as shown in fig. 1, 2 and 3, the cap 12 of the sealant nail 1 is provided with a protrusion 13, and the protrusion 13 is disposed on a side surface of the cap 12 facing away from the stem 11. The bulge 13 on the upper surface of the cap 12 of the sealing rubber nail 1 can avoid the formation of a large contact area between the sealing rubber nails 1, so that the situation that the sealing rubber nails 1 are bonded and difficult to separate due to the electrostatic adsorption effect in the feeding process can be avoided, the rapid feeding can be realized, and the feeding yield and the feeding efficiency can be improved. In addition, the bulge 13 is also beneficial to the installation and positioning of the sealing nail 2 and the improvement of the assembly efficiency of the sealing nail 2.

Illustratively, the cap 12 may be provided with one or more protrusions 13. 'a plurality' includes two or more.

Illustratively, the cap 12 is in a circular truncated cone shape, and all the protrusions 13 arranged on the cap 12 are arranged in a ring shape, so that the design and the processing are convenient. For example, as shown in fig. 2, when one projection 13 is provided on the cap 12, the one projection 13 is an annular projection 13; when a plurality of protrusions 13 are provided on the cap 12, the plurality of protrusions 13 may be arranged in a ring shape.

Illustratively, all the protrusions 13 provided on the cap 12 are symmetrically arranged with respect to the axis of the stem 11. The rod part 11 is used for being inserted into the liquid injection hole 3 of the battery and is symmetrical relative to the axis of the rod part 11, namely, is symmetrical relative to the center of the liquid injection hole 3, so that the liquid injection hole 3 can be conveniently positioned through the position of the structure of the bulge 13, and the sealing nail 2 can be conveniently welded at the back.

For example, as shown in fig. 2, the annular protrusion 13 is arranged around the axial line of the rod part 11 by one circle, the annular protrusion 13 of the one circle can be used as a recognition point for CCD photographing, so that the liquid injection hole 3 can be conveniently positioned, and further, when the sealing nail 2 is welded subsequently, the position of the liquid injection hole 3 can be accurately positioned, and the sealing nail 2 is welded in a sealing manner around the liquid injection hole 3 by one circle by taking the liquid injection hole 3 as a center.

In addition, the present application also provides a battery device, the battery device includes the battery according to any one of the above, and the battery device can be a battery module or a battery pack.

The battery device provided by the embodiment has higher reliability of signal acquisition and transmission, and the performance of the whole battery device is better.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The battery is characterized by comprising a shell and a sealing rubber nail; the shell is provided with a liquid injection hole, and the liquid injection hole extends towards the interior of the battery; the sealing rubber nail is inserted into the liquid injection hole and is in interference fit with the liquid injection hole, and the contact depth of the liquid injection hole and the sealing rubber nail is 0.5-2.5 mm along the extension direction of the liquid injection hole.

2. The battery of claim 1, wherein the pour hole is punched from the battery case into the battery.

3. The battery according to claim 2, wherein the thickness of the portion of the case for forming the pour hole is 0.1mm to 0.5 mm.

4. The battery according to claim 3, wherein the case comprises at least a two-part case, and the entire thickness of the case provided with the pour hole is 0.1mm to 0.5 mm.

5. The battery of claim 1, wherein the sealant pin comprises a stem portion and a cap at one end of the stem portion, the stem portion extending through the pour hole.

6. The battery according to claim 5, wherein the case is provided with a depressed portion depressed toward the inside of the battery, and the pour hole is provided in the depressed portion.

7. The battery of claim 6, wherein the cap of the sealing glue nail is received in a space enclosed by the depressed portion.

8. The battery of claim 1, further comprising a support member provided inside the case, the support member being provided around the pour hole, for supporting the case around the pour hole.

9. The battery of claim 1, further comprising a sealing nail, wherein the sealing nail covers the sealing rubber nail and the electrolyte injection hole.

10. The battery according to any one of claims 1 to 9, wherein the contact depth of the liquid injection hole and the sealing rubber nail is 0.7mm to 1.5 mm.