CN218039743U

CN218039743U - Battery connection piece and battery

Info

Publication number: CN218039743U
Application number: CN202221775572.3U
Authority: CN
Inventors: 张钰禄; 宋武; 袁钊
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-12-13
Anticipated expiration: 2032-07-11

Abstract

The utility model belongs to the technical field of the battery, a battery connection piece and battery is disclosed. The battery connecting sheet comprises a pole connecting part, a pole lug connecting part, a fusing part and a protective part. Wherein, the utmost point post connecting portion are connected with the utmost point post electricity of battery. The fusing part is arranged between the pole connecting part and the pole lug connecting part and is fused when the temperature in the circuit is too high. The protection part is arranged on one side, close to the battery cell, of the fusing part and is used for receiving fusing beads generated after the fusing part is fused. Above-mentioned battery connection piece, the security performance is higher, has reduced the risk that leads to the short circuit of electricity core after the battery connection piece melts.

Description

Battery connection piece and battery

Technical Field

The utility model relates to a battery technology field especially relates to a battery connection piece and battery.

Background

When the battery short circuit, the fusing part on the battery connecting sheet can be fused automatically to cut off the circuit and protect the battery core. However, after the fusing part of the battery connecting sheet is fused, liquid beads can be formed, and the battery connecting sheet is generally arranged outside the laminated battery core, so that the beads can drip on the laminated battery core due to the action of gravity, and the risk of burning through the laminated battery core exists due to the high temperature of the beads, so that the anode and the cathode between the battery cores are electrically connected to form a short circuit, and explosion or fire is caused.

Therefore, it is desirable to provide a battery connecting tab to solve the above problems.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect, the utility model provides a battery connection piece, the security performance is higher, has reduced the risk that leads to electric core short circuit after the battery connection piece fuses.

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

a battery tab, comprising:

the pole connecting part is electrically connected with a pole of the battery;

a tab connecting part;

the fusing part is arranged between the pole connecting part and the lug connecting part and is fused when the temperature in the circuit is overhigh; and

and the protection part is arranged on one side of the fusing part close to the battery cell and used for bearing the fused beads generated after the fusing part is fused.

Optionally, the protection portion includes a substrate and a rough layer disposed on the substrate, and the rough layer is close to the fusing portion.

Optionally, the rough layer includes a plurality of pillars, and the plurality of pillars are disposed on the substrate at intervals.

Optionally, the pillar and the base plate are formed by integral molding.

Optionally, two sides of the substrate are provided with first connecting portions, and the two first connecting portions are bonded to the fusing portion through glue.

Optionally, the colloid is made of a high temperature resistant material.

Optionally, second connecting portions are arranged on two sides of the substrate, clamping grooves are formed in the second connecting portions, and the two clamping grooves are connected with two opposite side walls of the fusing portion in a clamping mode along the length direction.

Optionally, a gap is provided between the protection part and the fusing part.

Optionally, the guard is made of a ceramic material.

According to another aspect of the present invention, the present invention also provides a battery, including the above-mentioned battery connecting sheet.

The utility model has the advantages that:

the utility model provides a battery connection piece is applicable to square aluminum hull battery. The battery connecting sheet comprises a pole connecting part, a pole lug connecting part, a fusing part and a protecting part. One side through being close to electric core at the fusing part sets up protection part for accept fusing pearl that produces after the fusing part fuses, can avoid dissolving the pearl and drip on electric core and burn through electric core, avoided the risk of the positive negative pole short circuit of electric core, improved the security performance of battery.

Through setting up fusing portion, when the high temperature in the circuit, fusing portion fusing protects electric core, has reduced the risk of battery explosion, and the fault loss.

Drawings

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

Fig. 1 is a top view of a battery tab provided by an embodiment of the present invention (the guard is not shown);

fig. 2 is a bottom view of a battery connecting sheet according to an embodiment of the present invention (a fusing portion is not shown);

fig. 3 is a schematic structural diagram of a protection portion according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another protection part according to an embodiment of the present invention.

In the figure:

100. a pole connecting part; 200. a tab connecting part; 210. a first pin; 220. a second pin; 300. a fusing portion; 400. a protective part; 410. a substrate; 420. a rough layer; 421. a column; 430. a first connection portion; 440. a colloid; 450. a second connecting portion; 451. a card slot; 500. and fusing the hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

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.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The utility model provides a battery connection piece, the security performance is higher, has reduced the risk that leads to electric core short circuit after the battery connection piece fuses.

Specifically, as shown in fig. 1-2, the battery connecting sheet includes a post connecting portion 100, a tab connecting portion 200, a fusing portion 300, and a protection portion 400, where the post connecting portion 100 is electrically connected to a post of a battery, the tab connecting portion 200 includes a first pin 210 and a second pin 220, the first pin 210 is electrically connected to a first electrode of a battery cell, and the second pin 220 is electrically connected to a second electrode of the battery cell. The first electrode can be a positive electrode or a negative electrode, and when the first electrode is the positive electrode, the second electrode is the negative electrode; when the first electrode is a negative electrode, the second electrode is a positive electrode and is arranged as required. Fusing portion 300 sets up between utmost point post connecting portion 100 and utmost point ear connecting portion 200, in this embodiment, is equipped with fusing hole 500 between utmost point post connecting portion 100 and the utmost point ear connecting portion 200, and the region of fusing hole 500 both sides is fusing portion 300, owing to set up fusing hole 500 for connecting area between utmost point post connecting portion 100 and the utmost point ear connecting portion 200 diminishes, and when the electric current in the circuit was too high, fusing portion 300 was blown out because of the high temperature, and then avoided the battery explosion. Protection portion 400 sets up in one side that fuse portion 300 is close to electric core, and the pearl that dissolves that forms after fuse portion 300 fusing can drip protection portion 400 on, avoids dissolving the pearl to drip on electric core and burn through the positive negative pole short circuit that electric core leads to electric core, has improved the security performance of battery.

Further, with continued reference to fig. 2, in one embodiment, one guard 400 is provided, and one guard 400 covers the fuse 300 and the fuse hole 500. In other embodiments, there may be two protection parts 400, and one protection part 400 may be connected to the fuse part 300 on one side of the fuse hole 500, and may be disposed according to actual needs.

Preferably, as shown in fig. 3 and fig. 4, the protection part 400 includes a substrate 410 and a rough layer 420, the rough layer 420 is disposed on the substrate 410 and is close to the fuse part 300, and by disposing the rough layer 420, on one hand, after the beads drop onto the rough layer 420, the beads are more easily dispersed, so that the contact area between the beads and the rough layer 420 is increased, the heat transfer is more rapidly generated, the time for the beads to change from liquid to solid is shorter, the beads are more easily attached to the rough layer 420, and the beads are prevented from falling off from the protection part 400 and dropping onto the battery cell to burn through the battery cell; on the other hand, the rough layer 420 increases the contact area with the beads, so that the beads that can be adsorbed by the protection part 400 are more, and the protection reliability of the protection part 400 is improved.

Further, the rough layer 420 includes a plurality of pillars 421, the pillars 421 are disposed on the substrate 410 at intervals, and the pillars 421 have regular shapes, so as to facilitate processing and determine the number and the spacing distance of the pillars 421 according to the amount of beads. Of course, the structure of the rough layer 420 may be other structures, and it is within the scope of the present application as long as it can ensure that the beads can be well attached and will not drip from the protection part 400 onto the battery cell.

Optionally, the pillar 421 and the substrate 410 may be formed integrally, which is beneficial to simplifying the processing procedure of the protection part 400 and improving the production efficiency.

Further, with continued reference to fig. 3, in one embodiment, first connection portions 430 are disposed on two sides of the substrate 410, and the first connection portions 430 are bonded to the fuse portion 300 through an adhesive 440. The protection part 400 is connected with the fusing part 300 through the colloid 440, so that the structure is simple, the cost is low, and the installation efficiency is high. Preferably, in order to avoid the colloid 440 from falling off due to the over-high temperature, the colloid 440 having high temperature resistance should be used. Moreover, because there is a supporting structure between the battery connecting sheet and the battery cell, even if the colloid 440 fails, the protecting portion 400 can also have a better protecting effect against the fusing portion 300.

Further, with reference to fig. 4, in another embodiment, the two sides of the substrate 410 are provided with second connecting portions 450, the second connecting portions 450 are provided with two clamping grooves 451, and the two clamping grooves 451 are respectively clamped with two opposite side walls of the fusing portion 300 to connect and fix the battery between the two first connecting portions 430. Of course, in other embodiments, the protection portion 400 may be connected to the fusing portion 300 in other manners, and may be disposed according to actual needs.

Preferably, in order to improve the capability of the protective part 400 to contain the beads, a gap may be provided between the protective part 400 and the fusing part 300 to prevent the beads from overflowing too much.

Optionally, the protection part 400 may be made of a ceramic material, which is easy to process, resistant to high temperature, has an insulating property, and is low in cost.

The utility model also provides a battery, including foretell battery connection piece.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery tab, comprising:

a pole connecting part (100) electrically connected to a pole of the battery;

a tab connection part (200);

a fusing part (300) disposed between the post connection part (100) and the tab connection part (200), the fusing part (300) fusing when a temperature in a circuit is excessively high; and

the protection part (400) is arranged on one side, close to the battery cell, of the fusing part (300) and used for receiving fused beads generated after the fusing part (300) is fused.

2. The battery tab of claim 1, wherein the guard (400) comprises a substrate (410) and a rough layer (420) disposed on the substrate (410), the rough layer (420) being proximate to the fuse (300).

3. The battery tab of claim 2, wherein the roughened layer (420) comprises a plurality of pillars (421), and wherein the plurality of pillars (421) are spaced apart on the substrate (410).

4. The battery tab of claim 3 wherein the stud (421) is formed integrally with the base (410).

5. The battery tab of claim 2 wherein the substrate (410) is provided with first connecting portions (430) on both sides, and both first connecting portions (430) are bonded to the fuse portion (300) by a glue (440).

6. A battery tab according to claim 5 wherein the gel (440) is made of a high temperature resistant material.

7. The battery connecting sheet according to claim 2, wherein second connecting portions (450) are arranged on two sides of the substrate (410), clamping grooves (451) are arranged on the second connecting portions (450), and the two clamping grooves (451) are respectively clamped with two opposite side walls of the fusing portion (300) along the length direction.

8. A battery tab according to any of claims 1-7, wherein there is a gap between the guard (400) and the fuse (300).

9. A battery tab according to any of claims 1-7, wherein the guard (400) is made of a ceramic material.

10. A battery comprising a battery tab according to any of claims 1-8.