CN212725522U

CN212725522U - Continuous disk type lithium battery tab

Info

Publication number: CN212725522U
Application number: CN202021035704.XU
Authority: CN
Inventors: 曾萍
Original assignee: Wuxi Baishijie Metal Product Technology Co ltd
Current assignee: Wuxi Baishijie Metal Product Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2021-03-16
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a continuous disk lithium battery tab, include the reel and convolute the winding on the reel, the reel includes axle core and the fender dish of setting in axle core both sides, be provided with the slot on the fender dish of one side wherein, be provided with the picture peg in the slot, fender dish oral area still is provided with the round screening glass, the winding includes a plurality of continuous utmost point ears, utmost point ear includes aluminium base material, sets up the metal composite bed of utmost point ear flexible glue piece and the easy tin of going up on aluminium base material tow sides, the metal composite bed plates on aluminium base material surface, the nickel coating and the silver coating that the metal composite bed set gradually from the bottom up. The utility model discloses simple structure, can keep the cleanness of utmost point ear to can reduce lithium cell surface impedance, improve the charge and discharge performance of group battery, improve the corrosion resistance of the electrically conductive handle of battery.

Description

Continuous disk type lithium battery tab

The technical field is as follows:

the utility model relates to a material technical field for the lithium cell especially relates to a continuous disk lithium cell utmost point ear.

Background art:

the tab is a positive and negative electrode lead-out wire of the polymer lithium battery, is also one of important materials and mainly consists of a positive electrode tab and a negative electrode tab. When the lithium battery is produced, the battery core and the circuit protection board are required to be welded, so that the battery core can be charged and discharged under the condition of safety guarantee. At present, the anode of the lithium ion battery is generally made of aluminum, and because the aluminum has poor tin weldability, the aluminum cannot be directly welded with a circuit protection board, a section of nickel material is usually welded on the aluminum of the anode, and the protection board is welded together through the nickel material (namely, aluminum-to-nickel processing). And change the nickel mode very troublesome, the process is complicated, and production efficiency is low, and the quality is unstable, and has the condition of rosin joint and overwelding, and the welding position aluminum product is easy to be broken and leads to the defective rate higher.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

The utility model has the following contents:

an object of the utility model is to provide a continuous disk lithium cell utmost point ear to overcome the defect among the above-mentioned prior art.

In order to realize the above-mentioned purpose, the utility model provides a continuous disk lithium battery tab, include the reel and convolute the winding on the reel, the reel includes axle core and the fender dish of setting in axle core both sides, wherein be provided with the slot on the fender dish of one side, be provided with the picture peg in the slot, fender dish oral area still is provided with the round screening glass, the winding includes a plurality of continuous utmost point ears, utmost point ear includes aluminium base material, sets up the metal composite bed at the utmost point ear flexible glue piece and the easy tinning of aluminium base material tow sides, the metal composite bed is plated on aluminium base material surface, the nickel coating and the silvered film that the metal composite bed set gradually from the bottom up.

And the two sides of the protection sheet are bent and clamped at the outer sides of the two side blocking discs.

The thickness of the metal composite layer is 2-10 μm.

The rolling belt is also provided with a layer of protective film.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model arranges the slot and the plug board on the baffle disc of the reel, when not in use, the plug board is pushed above the shaft core to block the winding belt, and the winding belt is prevented from scattering; a circle of protective plates are arranged at the opening part of the blocking disc, so that the winding belt can be positioned in a relatively sealed space, and the cleanliness of the winding belt is ensured; the nickel plating and silver plating composite layer is arranged on the surface of the aluminum base material of the tab, so that the process of converting aluminum into nickel can be omitted, the production efficiency is improved, the reject ratio of production is reduced, the surface impedance can be reduced, the charge and discharge performance of the battery pack is improved, and the corrosion resistance of the battery conductive handle is improved.

Description of the drawings:

fig. 1 is a schematic view of a continuous disk type lithium battery tab of the present invention;

fig. 2 is a left side view of a continuous disc type lithium battery tab of the present invention;

FIG. 3 is a top view of the tape of the present invention;

the reference signs are: 1-reel, 11-core, 12-baffle disc, 13-slot, 14-insert plate, 2-tape, 21-pole ear, 211-aluminum base material, 212-pole ear soft rubber block, 213-metal composite layer and 3-protective sheet.

The specific implementation mode is as follows:

the following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1-3, a continuous disk type lithium battery tab, includes reel 1 and winding tape 2 on reel 1, reel 1 includes axle core 11 and fender dish 12 of setting in axle core 11 both sides, be provided with slot 13 on the fender dish 12 of one side wherein, be provided with picture peg 14 in the slot 13, fender dish 12 oral area still is provided with round protection sheet 3, winding tape 2 includes a plurality of continuous utmost point ear 21, utmost point ear 21 includes aluminium base material 211, sets up the utmost point ear soft rubber piece 212 and the metal composite layer 213 of easy tinning on aluminium base material 211 tow sides, metal composite layer 213 plates on aluminium base material 211 surface, metal composite layer 213 is nickel-plated layer and the silver-plated layer that from the bottom up set gradually.

The two sides of the protection plate 3 are bent and clamped at the outer sides of the two side blocking discs 12.

The thickness of the metal composite layer 213 is 2 to 10 μm.

And a protective film is also arranged on the winding tape 2.

When the rolling tape 2 is used, the rolling tape 2 is wound on the shaft core 11, the inserting plate 14 is inserted into the inserting groove 13 to limit the rolling tape 2 from the upper side of the rolling tape 2, the protection sheet 3 is clamped at the mouth parts of the blocking discs 13 at two sides, when the rolling tape 2 needs to be used, a part of small opening is opened by the protection sheet 3, the inserting plate 14 is taken out from the inserting groove 13, the rolling tape 2 is pulled out, and the rolling tape 2 is pulled out and cut under the rotation of the shaft core 11; when the use is not needed, the shaft core is also rotated to collect the winding tape 2, the inserting plate 14 is inserted back into the inserting groove 13 again, and the protection plate 3 is clamped to the opening part of the baffle disc 13 again.

Wherein the inserting plate 14 is arranged to prevent the winding belt 2 from scattering; the protective sheet 3 is arranged to enable the winding tape to be in a relatively sealed space, so that the cleanliness of the winding tape is ensured; the aluminum base material 211 surface of utmost point ear is provided with nickel plating silver-plating composite bed on the one hand can save the process that aluminium changes nickel, improves production efficiency, reduces the defective rate of production, and on the other hand because the conductive efficiency of silver is higher, can reduce surface impedance, improves the charge-discharge performance of group battery, improves the corrosion resistance of the electrically conductive handle of battery.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a continuous disk lithium battery tab, includes reel and the winding tape on the reel, its characterized in that: the reel includes axle core and the fender dish of setting in axle core both sides, keep off and be provided with the slot on the dish, be provided with the picture peg in the slot, fender dish oral area still is provided with the round screening glass, the winding includes a plurality of continuous utmost point ears, utmost point ear includes aluminium base material, sets up at the utmost point ear flexible glue piece on aluminium base material tow sides and the metal composite bed of easy tin, the metal composite bed plates on aluminium base material surface, the nickel coating and the silver coating that the metal composite bed set gradually from the bottom up.

2. The continuous disk type lithium battery tab as claimed in claim 1, wherein: and the two sides of the protection sheet are bent and clamped at the outer sides of the two side blocking discs.

3. The continuous disk type lithium battery tab as claimed in claim 1, wherein: the thickness of the metal composite layer is 2-10 μm.

4. The continuous disk type lithium battery tab as claimed in claim 1, wherein: the rolling belt is also provided with a layer of protective film.