CN214227091U

CN214227091U - Anti-reverse insertion device for battery tab

Info

Publication number: CN214227091U
Application number: CN202023018999.2U
Authority: CN
Inventors: 孙瑞龙; 尚随军; 刘贯东
Original assignee: Suzhou Youlionbattery Inc
Current assignee: Suzhou Youlionbattery Inc
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-17
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a battery tab prevents cartridge from falling puts belongs to lithium cell technical field, and it includes: the battery cover plate, roll up core and insulating pad, the relative both ends of battery cover plate are provided with at least one electrode slice respectively, the electrode slice at battery cover plate both ends is as the positive electrode of battery and connects with the negative pole respectively, it buckles the postweld to roll up the utmost point ear that the core extends on the electrode slice, the top both ends of rolling up the core are provided with respectively insulating pad, be provided with a plurality of draw-in grooves on the insulating pad, the electrode slice is pegged graft in the draw-in groove, just the both sides wall of draw-in groove supports respectively the both sides of electrode slice. The utility model discloses an insulating pad of installation can solve utmost point ear inverted insertion effectively and roll up the core and cause the problem that roll up the core short circuit and scrap, the diaphragm is damaged, the pole piece collides with the damage to can improve the security that the battery used.

Description

Anti-reverse insertion device for battery tab

Technical Field

The utility model belongs to the technical field of the lithium cell, especially, relate to a battery tab prevents down cartridge and puts.

Background

The tab is a raw material of a lithium ion polymer battery product. For example, the tabs are needed for mobile phone batteries, bluetooth batteries, notebook batteries and the like used in our lives. The battery is divided into positive and negative electrodes, the tabs are metal conductors leading out the positive and negative electrodes from the battery core, and the ears of the positive and negative electrodes of the battery are contact points during charging and discharging. This contact point is not the copper sheet that we see on the outside of the cell, but rather a connection inside the cell. The tabs are divided into three materials, wherein the positive electrode of the battery is made of aluminum (Al) material, the negative electrode of the battery is made of copper (Cu) material, and the negative electrode of the battery is also made of copper nickel plating (Ni-Cu) material.

In the lithium battery assembly process, the battery comprises a shell, a battery roll core and electrolyte which are arranged in the shell, and a cover plate for sealing the shell, wherein the battery roll core is formed by winding a positive plate, a negative plate and a diaphragm between the positive plate and the negative plate, the positive plate and the negative plate are respectively provided with a positive lug and a negative lug for leading out current, and the battery roll core needs to be connected and fixed on the cover plate after being arranged in the shell.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the battery tab anti-reverse insertion device is provided for solving the problems that after a tab is bent, the tab is reversely inserted into a winding core to cause short circuit scrapping of the winding core, damage of a diaphragm, collision and damage of a pole piece and the like.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a battery tab anti-falling-inserting device comprises: the battery cover plate, roll up core and insulating pad, the relative both ends of battery cover plate are provided with at least one electrode slice respectively, the electrode slice at battery cover plate both ends is as the positive electrode of battery and connects with the negative pole respectively, it buckles the postweld to roll up the utmost point ear that the core extends on the electrode slice, the top both ends of rolling up the core are provided with respectively insulating pad, be provided with a plurality of draw-in grooves on the insulating pad, the electrode slice is pegged graft in the draw-in groove, just the both sides wall of draw-in groove supports respectively the both sides of electrode slice.

As a further description of the above technical solution:

the length of the clamping groove is greater than that of the electrode plate.

As a further description of the above technical solution:

chamfers are arranged on two sides of the opening end of the clamping groove.

As a further description of the above technical solution:

two clamping grooves are formed in the top of the insulating pad and are arranged along the length direction of the insulating pad.

As a further description of the above technical solution:

the thickness of the insulating pad is 0.2-0.6 mm.

As a further description of the above technical solution:

the insulating pad is made of PP or PET materials.

As a further description of the above technical solution:

the insulating pad is detachably connected to the winding core.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. in the utility model, through the arranged insulating pad, the clamping groove arranged on the insulating pad supports against the lug welded on the electrode plate, so that the lug can be fixed, and the lug is prevented from being bent and inversely inserted into the winding core; each face of insulating pad corresponds and contacts with the face of rolling up the core, can improve the stability that insulating pad is connected, can have the guard action well to rolling up core top end face simultaneously, and then can effectually prevent that the diaphragm that causes among the operation process is damaged, the pole piece collides with the damage etc..

2. The utility model discloses in, insulating pad is made by the PP material, and is with low costs, when having certain hardness, still has elasticity, and the both sides of draw-in groove open end have the chamfer, and the utmost point ear both sides position is filled in to the insulating pad of being convenient for, improves the packaging efficiency.

3. Adopt the utility model discloses a product short circuit in product short circuit disability rate and product use, the risk of explosion on fire can both obtain to a great extent control, have improved the security.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a battery tab anti-falling device.

Fig. 2 is a schematic diagram of a battery tab after being inserted backward and assembled with a core.

Fig. 3 is a schematic diagram of a tab reverse insertion simulation.

Fig. 4 is a schematic structural view of an insulating pad in the anti-falling insertion device for battery tabs.

Illustration of the drawings:

1. a battery cover plate; 2. a winding core; 3. an insulating pad; 4. an electrode sheet; 5. a tab; 6. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a battery tab anti-falling-inserting device comprises: battery apron 1, roll up core 2 and insulating pad 3, the relative both ends of battery apron 1 are provided with two electrode slice 4 respectively, the electrode slice 4 at 1 both ends of battery apron is as the positive electrode of battery and connects with the negative pole respectively, it buckles the postweld at utmost point ear 5 that extends to roll up core 2 on the electrode slice 4, the top both ends of rolling up core 2 are provided with respectively insulating pad 3, be provided with two draw-in grooves 6 on the insulating pad 3, electrode slice 4 pegs graft in the draw-in groove 6, just the both sides wall of draw-in groove 6 supports respectively the both sides of electrode slice 4.

The length of the clamping groove 6 is larger than that of the electrode plate 4. Specifically, the limited length of the clamping groove 6 enables the length except for the chamfer to be larger than the length of the electrode plate 4, namely the width of the tab, so that the tab can be further prevented from being inserted into the winding core.

And chamfers are arranged on two sides of the opening end of the clamping groove 6. The insulating pad is convenient to plug into the positions of the two sides of the lug, and the assembly efficiency is improved.

Two clamping grooves 6 are formed in the top of the insulating pad 3, and the clamping grooves 6 are arranged along the length direction of the insulating pad 3. The number of the clamping grooves 6 is matched according to the number of the lugs.

The thickness of the insulating pad 3 is 0.3 mm. The thickness of the insulating pad can be 0.4mm, 0.5mm and 0.55mm, the strength of the insulating pad can be improved, the insulating pad is prevented from being broken due to too thin thickness, and the insulating pad is not easy to assemble due to too thick thickness.

The insulating pad 3 is made of a PET material. And the material can also be a PP material, so that the production cost can be reduced.

The insulating pad 3 is detachably connected to the winding core 2. Is convenient to assemble and disassemble and is beneficial to maintenance.

The utility model discloses a theory of operation is: after the welding process of the pole lug is finished, the insulating pad 3 is inserted at the opposite two ends of the top of the winding core, the clamping groove 6 on the insulating pad 3 is abutted against the pole lug welded on the electrode plate and can fix the pole lug so as to prevent the pole lug from being bent and inserted into the winding core, each surface of the insulating pad is correspondingly contacted with the surface of the winding core, the stability of the connection of the insulating pad can be improved, meanwhile, the top end surface of the winding core can be well protected, further, the damage of a diaphragm, the collision and the damage of a pole piece and the like caused in the operation process can be effectively prevented, the insulating pad can be conveniently plugged into the two side positions of the pole lug by chamfering the two sides of the opening end of the clamping groove 6, the assembly efficiency is improved, the surface of the insulating pad 3 has no defects of burrs, scratches and the like, the winding core or the pole lug can be prevented from being scratched by the insulating pad 3, the insulating pad is made of PP material, the cost is low, and has elasticity while certain hardness, the purpose of buffering can be played, and the battery cover plate 1 is pressed against the top surface of the insulating pad 3 at last, so that the overall stability can be improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a battery tab prevents cartridge and puts which characterized in that includes: battery apron (1), roll up core (2) and insulating pad (3), the relative both ends of battery apron (1) are provided with at least one electrode slice (4) respectively, electrode slice (4) at battery apron (1) both ends are regarded as the positive electrode of battery and are connected with the negative pole respectively, it buckles the postweld in utmost point ear (5) that roll up core (2) and extend on electrode slice (4), the top both ends of rolling up core (2) are provided with respectively insulating pad (3), be provided with a plurality of draw-in grooves (6) on insulating pad (3), electrode slice (4) are pegged graft in draw-in groove (6), just the both sides wall of draw-in groove (6) supports respectively the both sides of electrode slice (4).

2. The battery tab anti-reverse-insertion device according to claim 1, wherein the length of the clamping groove (6) is greater than that of the electrode plate (4).

3. The battery tab anti-reverse-insertion device as claimed in claim 1, wherein two sides of the opening end of the clamping groove (6) are provided with chamfers.

4. The battery tab anti-reverse-insertion device according to claim 1, wherein the top of the insulating pad (3) is provided with two clamping grooves (6), and the clamping grooves (6) are arranged along the length direction of the insulating pad (3).

5. The battery tab anti-reverse-insertion device according to claim 1, wherein the thickness of the insulating pad (3) is 0.2-0.6 mm.

6. The battery tab anti-falling-inserting device as claimed in claim 1 or 5, characterized in that the insulating pad (3) is made of PP or PET material.

7. The battery tab anti-reverse-insertion device as claimed in claim 1, wherein the insulating pad (3) is detachably connected to the winding core (2).