CN217788748U

CN217788748U - Battery connecting piece component and battery

Info

Publication number: CN217788748U
Application number: CN202221516778.4U
Authority: CN
Inventors: 宋武; 袁钊; 张钰禄; 陈雪
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-11-11
Anticipated expiration: 2032-06-16

Abstract

The utility model belongs to the technical field of the battery, a battery connecting piece subassembly and battery is disclosed. This battery connection piece subassembly includes connection piece and insulating piece, and the connection piece includes fusing portion, is provided with the breach in the fusing portion, is provided with joint spare on the insulating piece, and joint spare can pass the breach joint in fusing portion to make insulating piece and fusing portion laminate. Guaranteed that insulating piece and connection piece can not take place relative displacement, made the insulating piece be located the connection piece all the time under, can hold the fuse bead after the fusing, prevent that the fuse bead from dripping to electric core on, improved battery connecting piece subassembly's reliability, can guarantee that the battery is safer.

Description

Battery connecting piece component and battery

Technical Field

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

Background

When power battery takes place the short circuit, the fusing part on the inside connection piece of battery can carry out automatic fusing, but the connection piece is rectangular form generally, is connected between utmost point post and electric core, can form liquid pearl of dissolving after connection piece fusing part melts, dissolves the pearl and can drip on electric core because of the action of gravity, can lead to the positive negative pole short circuit between the electric core to the possibility of explosion or getting on fire takes place.

The current processing mode generally all sets up the insulating piece in the fusing portion below of connection piece, fusing portion when the connection piece is after the fusing, it can drip to the insulating piece to dissolve the pearl, however current insulating piece generally overlaps in fusing portion below, because be the structure that cup joints each other, do not set up location structure, there is insulating piece and the condition of connection piece relative slip in the installation, the insulating piece just can't be just facing the connection piece like this, thereby when fusing portion fuses, the pearl that dissolves that produces falls can't be caught by the insulating piece, thereby directly drip on electric core, make electric core take place the short circuit.

Therefore, a need exists for a battery tab assembly and battery that solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery connecting piece subassembly and battery can guarantee the position relatively fixed of connection piece and insulating piece, improves the security of battery.

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

a battery tab assembly, comprising:

the connecting piece comprises a fusing part, and a notch is arranged on the fusing part;

the insulating piece, be provided with joint spare on the insulating piece, joint spare can pass the breach joint in on the fusing portion, so that the insulating piece with the laminating of fusing portion.

Optionally, the joint spare includes location portion and joint portion, location portion wears to locate in the breach, just the outer wall of location portion with the inner wall laminating of breach, be provided with the buckle in the joint portion, the buckle lock joint in the border of breach.

Optionally, a guiding inclined plane is arranged on the buckle, and the guiding inclined plane is configured to facilitate the assembling of the buckle and the notch.

Optionally, the battery tab assembly further includes an adhesive layer, the adhesive layer is disposed on the end surface of the insulating sheet away from the clamping portion, and the adhesive layer is configured to connect the insulating sheet with the battery cover plate.

Optionally, in the first direction, a width of the insulation sheet is greater than a width of the fusing part.

Optionally, the notch is located in the middle of the fusing part, and the distance from the notch to the fusing part along both sides of the first direction is equal.

Optionally, the insulation sheet is made of a ceramic material.

Optionally, the connection piece still includes utmost point post weld part and utmost point ear weld part, the fusing portion set up in utmost point post weld part with between the utmost point ear weld part.

Optionally, the connecting piece is made of a metal material.

Another object of the utility model is to provide a battery can guarantee the position relatively fixed of connection piece and insulating piece, improves the security of battery.

A battery comprises the battery connecting sheet assembly.

Has the advantages that:

the utility model provides a battery connecting piece subassembly through seting up the breach in the fusing portion, sets up joint spare on the insulating piece, and joint spare can pass the breach joint in the fusing portion, has guaranteed that insulating piece and connection piece can not take place relative displacement, makes the insulating piece be located the connection piece all the time under, can hold the melting bead after the fusing portion fuses, prevents that the melting bead from dripping to electric core on, has improved battery connecting piece subassembly's reliability, can guarantee that the battery is safer.

The utility model provides a battery, through using foretell battery connection piece subassembly, can further prevent the condition of electric core short circuit in the battery, improved the security and the reliability of battery.

Drawings

Fig. 1 is a schematic structural view of a battery tab assembly provided by the present invention;

fig. 2 is an exploded view of a battery tab assembly provided by the present invention;

fig. 3 is a sectional view of an insulation sheet provided by the present invention;

fig. 4 is an enlarged view at a in fig. 3.

In the figure:

100. connecting sheets; 110. a fusing part; 111. a notch; 120. a pole welding part; 130. a tab welding part;

200. an insulating sheet; 210. a clamping piece; 211. a positioning part; 212. a clamping part; 2121. buckling; 21211. a guide slope;

300. and (6) gluing the layers.

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 otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; 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 as a specific case by 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 have a special meaning.

The embodiment provides a battery connecting sheet assembly, as shown in fig. 1-2, the battery connecting sheet assembly includes a connecting sheet 100 and an insulating sheet 200, the connecting sheet 100 includes a fusing portion 110, the fusing portion 110 is provided with a notch 111, when a current flowing through the connecting sheet 100 is overloaded, the fusing portion 110 can be fused, the insulating sheet 200 is provided with a clamping member 210, the clamping member 210 can pass through the notch 111 and be clamped on an end surface of the fusing portion 110 deviating from the insulating sheet 200, so that the insulating sheet 200 is attached to the fusing portion 110.

The utility model provides a battery connecting piece subassembly, through set up breach 111 on fusing portion 110, set up joint spare 210 on insulating piece 200, joint spare 210 can pass breach 111 joint on fusing portion 110, it can not take place relative displacement with connection piece 100 to have guaranteed insulating piece 200, make insulating piece 200 be located connection piece 100 all the time under, can hold the melting bead after fusing portion 110 fuses, prevent that the melting bead from dripping to electric core, the reliability of battery connecting piece subassembly has been improved, can guarantee that the battery is safer.

Preferably, as shown in fig. 3, the clamping member 210 includes a positioning portion 211 and a clamping portion 212, the positioning portion 211 is inserted into the notch 111, and the outer wall of the positioning portion 211 is attached to the inner wall of the notch 111, which can play a positioning role on the insulating sheet 200, so that the insulating sheet 200 is fixed relative to the connecting sheet 100, the clamping portion 212 is provided with a buckle 2121, the buckle 2121 is buckled to the edge of the notch 111, it is ensured that the insulating sheet 200 cannot be separated from the connecting sheet 100, so that the insulating sheet 200 is better attached to the connecting sheet 100, and the receiving effect of the insulating sheet 200 is improved.

Further, as shown in fig. 3 and 4, the clip 2121 is provided with a guiding inclined surface 21211, and the guiding inclined surface 21211 can ensure that the resistance received by the clip 2121 is reduced during the process of assembling the clip 2121 with the notch 111, so that the clip 2121 can more easily pass through the notch 111 to be buckled on the fusing portion 110, thereby improving the assembling efficiency.

Preferably, as shown in fig. 2 and fig. 3, the battery tab assembly further includes an adhesive layer 300, the adhesive layer 300 is disposed on the upper end surface of the clamping portion 212, the adhesive layer 300 is used to connect the insulating sheet 200 with the battery cover plate, so as to ensure that at the initial stage of fusing of the fusing portion 110, the notch 111 is partially fused, the insulating sheet 200 still cannot be separated from the tab 100 when the buckle 2121 has no clamping fulcrum, the insulating sheet 200 still can support the bead of the un-fused tab 100, and the reliability of the battery tab assembly is improved.

Preferably, as shown in fig. 1-2, the connecting sheet 100 further includes a terminal welding portion 120 and a tab welding portion 130, the terminal welding portion 120 is used for being welded to a terminal of the battery, the tab welding portion 130 is used for being welded to a terminal of the battery, and the fusing portion 110 is disposed between the terminal welding portion 120 and the tab welding portion 130, so as to ensure that when the battery fails, the current of the fusing portion 110 is overloaded, and the fusing portion 110 can be fused in time, thereby preventing the battery from being ignited and exploded, and ensuring the safety of the battery.

Preferably, the connecting sheet 100 of the present embodiment is made of a metal material, specifically, the metal material may be a metal material such as aluminum, copper, nickel or a copper-nickel alloy, so that the current generated by the battery can be transmitted to the pole through the connecting sheet 100 via the tab.

Preferably, in the present embodiment, the insulation sheet 200 is made of a ceramic material, and the sheet body of the insulation sheet 200 and the clamping member 210 are integrally formed. The connecting piece 100 made of the ceramic material has good insulating effect, has the advantages of high temperature resistance, high pressure resistance and wear resistance, has long service life, and can improve the safety and stability of the operation of the battery connecting piece assembly. The insulating sheet 200 can also separate the terminal from the tab on the connecting sheet 100, thereby preventing the terminal from being directly connected with the tab. In order to avoid the long tab from being misplaced and overlapped on the terminal welding portion 120, the insulation sheet 200 covers at least the edge of the terminal welding portion 120 portion close to the fusing portion 110.

Preferably, as shown in fig. 1, in the first direction, the width of the insulating sheet 200 is greater than the width of the fuse part 110, on the one hand, the insulating sheet 200 can better receive the beads on both sides of the fuse part 110, after the insulating sheet 200 is assembled with the connecting sheet 100, the phenomenon that the edge of the fuse part 110 of the connecting sheet 100 is exposed is prevented, the reliability of the insulating sheet 200 is further improved, on the other hand, the insulating sheet 200 can be ensured to completely cover the edge of the fuse part 110, the phenomenon that the fuse part 110 fails due to the fact that the tab is directly overlapped on the fuse part 110 in a staggered manner can be avoided, the phenomenon of continuous short circuit occurs inside the battery, and the safety of the battery is improved.

Preferably, setting up breach 111 on fusing portion 110 can reduce the open area of fusing portion 110, improves the sensitivity of fusing portion 110, and specifically, in this embodiment breach 111 is located the middle part of fusing portion 110, and the distance that breach 111 is apart from fusing portion 110 along the both sides of first direction equals, can guarantee that the open area of breach 111 both sides is the same, guarantees that breach 111 both sides fuse simultaneously. In other embodiments, the notches 111 may also be disposed on two sides of the fusing part 110 along the first direction, two corresponding clamping members 210 are disposed on the insulating sheet 200 corresponding to the two notches 111, and each clamping member 210 corresponds to one notch 111. The shape of the notch 111 and the position provided on the fusing part 110 are not particularly limited in this embodiment.

This embodiment still provides a battery, including apron, electric core and foretell battery tab subassembly, electric core including roll up the core and certainly roll up first utmost point ear and the second utmost point ear that the core stretches out, the apron includes the first utmost point post that corresponds with first utmost point ear to and the second utmost point post that corresponds with the second utmost point ear, all link to each other through this battery tab subassembly between first utmost point ear and the first utmost point post and between second utmost point ear and the second utmost point post.

Specifically, the first tab is an anode tab, the first terminal is an anode terminal, the anode terminal is installed on one surface of the connecting sheet 100, and the anode tab and the insulating sheet 200 are both installed on the other surface of the connecting sheet 100. The second utmost point ear is negative pole utmost point ear, and the second utmost point post is negative pole utmost point post, and negative pole utmost point post is installed on one of connection piece 100 surfaces, and negative pole utmost point ear and insulating piece 200 are all installed another of connection piece 100 is surperficial.

This implementation provides's battery, when the battery overcharged, the heavy current that the inside short circuit of battery produced at first leads to fusing part 110 to split, and utmost point ear welding part 130 and utmost point post welding part 120 also break off thereupon, and then has blocked the connection of utmost point ear and utmost point post, and the battery is inside to become the open circuit by the short circuit, has avoided gathering more heats and explosion and has been fired, has guaranteed the security of battery.

It is obvious that the above embodiments of the present invention are only 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. And are neither required nor 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 assembly, comprising:

the connecting piece (100) comprises a fusing part (110), and a notch (111) is arranged on the fusing part (110);

insulating piece (200), be provided with joint spare (210) on insulating piece (200), joint spare (210) can pass breach (111) joint in on fusing portion (110), so that insulating piece (200) with fusing portion (110) laminating.

2. The battery connecting piece assembly according to claim 1, wherein the clamping member (210) comprises a positioning portion (211) and a clamping portion (212), the positioning portion (211) is arranged in the notch (111) in a penetrating manner, the outer wall of the positioning portion (211) is attached to the inner wall of the notch (111), a buckle (2121) is arranged on the clamping portion (212), and the buckle (2121) is buckled at the edge of the notch (111).

3. The battery tab assembly of claim 2 wherein the catch (2121) is provided with a guide ramp (21211), the guide ramp (21211) configured to facilitate assembly of the catch (2121) with the indentation (111).

4. The battery tab assembly of claim 2 wherein the battery tab assembly further comprises a glue layer (300), the glue layer (300) being disposed on an end surface of the clamping portion (212) distal from the insulating sheet (200), the glue layer (300) being configured to connect the insulating sheet (200) with a battery cover plate.

5. The battery tab assembly of claim 1, wherein the insulating sheet (200) has a width greater than a width of the fusing portion (110) in the first direction.

6. The battery tab assembly of claim 5 wherein the notch (111) is located in a middle portion of the fusing portion (110), the notch (111) being equidistant from both sides of the fusing portion (110) along the first direction.

7. The battery tab assembly of any of claims 1-6 wherein the insulating sheet (200) is made of a ceramic material.

8. The battery tab assembly of claim 1 wherein the tab (100) further comprises a post weld (120) and a tab weld (130), the fuse (110) being disposed between the post weld (120) and the tab weld (130).

9. The battery tab assembly of any of claims 1-6 wherein the tab (100) is made of a metallic material.

10. A battery comprising the battery tab assembly of any of claims 1-9.