CN213366751U

CN213366751U - Corrosion-resistant nickel-plated steel strip for tab

Info

Publication number: CN213366751U
Application number: CN202022603221.1U
Authority: CN
Inventors: 汪程龙; 白凡; 李庆斌
Original assignee: Luoding Pulette Technology Co ltd
Current assignee: Luoding Pulette Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-06-04
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a nickel plating steel band is used to corrosion-resistant utmost point ear, steel base band both sides all from interior to exterior are equipped with indisputable-nickel anchor coat, dark nickel layer and semi-bright nickel layer three-layer nickel coating layer in proper order, and it has gentle rete to bond through the glue film on the baseband back. The utility model discloses corrosion-resistant nickel plating steel band for utmost point ear, the wettability of iron-nickel anchor coat is good, better antioxidant properties has, the difficult oxide that influences the wetting reaction and go on that generates in surface, the ductility and the pliability of semi-bright nickel layer are good, the flattening power is splendid, the cladding material does not contain sulphur, corrosion resistance is excellent, dark nickel stability is high, can generate the extremely thin passive film of one deck rapidly at the surface, can resist the atmosphere, the corruption of alkali and some sour, compare in usual single layer degree nickel, the three-layer nickel plating makes the cohesion reinforcing of cladding material and steel base band, corrosion resistance obviously improves, be provided with the conducting wire on the gentle rete, when the circuit circular telegram, gentle rete is electrically conductive with the steel base band, make whole nickel plating steel band have fine electric conductive.

Description

Corrosion-resistant nickel-plated steel strip for tab

Technical Field

The utility model relates to a battery tab material technical field specifically is a corrosion-resistant nickel plating steel band for utmost point ear.

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 tab is divided into three materials, the positive pole of the battery uses aluminum material, the negative pole uses nickel material, the negative pole also has copper nickel plating material, they are all compounded by film and metal strap. The film is an insulated part on the tab, and has the functions of preventing short circuit between the metal belt and the aluminum plastic film when the battery is packaged, and preventing liquid leakage when the film is sealed and bonded with the aluminum plastic film by heating (about 140 ℃) in a hot melting way during packaging. One tab is sandwiched by two sheets of film. The film used in the market comprises three types of black glue, white glue and single-layer glue. The commonly used black film is of a three-layer structure: melanin, melting point 66 ℃; PE, melting point 105 ℃; PP, melting point 137 ℃. Since metallic nickel is a non-ferrous metal with excellent conductivity and electrochemical properties, a layer of metallic nickel is often plated on the surface of the steel strip to improve the conductivity, adhesion and electrochemical properties of the steel strip. The traditional nickel-plated steel strip only plates a layer of nickel on a base strip made of steel, and the nickel is easy to generate a surface oxidation film after being exposed in air for a long time, the film not only changes the resistance of the material, but also influences the performances of the material, such as corrosion resistance, welding performance and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a corrosion-resistant nickel plating steel band for utmost point ear has that the multilayer is electroplated corrosion resistance is strong, electric conductive property is good and the advantage that combining ability is strong, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the nickel-plated steel strip for the corrosion-resistant tab comprises a steel base strip, wherein drawing lines are processed on the front surface of the base strip of the steel base strip, the drawing lines are uniformly distributed on the front surface of the base strip at intervals, and the back surface of the base strip of the steel base strip is provided with a flat smooth surface;

the front side and the back side of the base band of the steel base band are both provided with nickel plating layers, and the nickel plating layers are sequentially provided with an iron-nickel bonding layer, a dark nickel layer and a semi-bright nickel layer from inside to outside, wherein the iron-nickel bonding layer is contacted with the front side and the back side of the base band;

a flexible film layer is arranged on the back face of the base band of the steel base band, the front face of the base band of the steel base band is exposed, and a glue layer is arranged between the back face of the base band and the flexible film layer.

Preferably, the direction of the wire drawing grains is the length direction of the steel base belt.

Preferably, the back surface of the base band is bonded and connected with the flexible film layer through a glue layer.

Preferably, the adhesive layer is a conductive adhesive.

Preferably, the flexible film layer is provided with a conductive circuit.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the corrosion-resistant nickel-plated steel strip for the lug has the advantages that the iron-nickel bonding layer, the dark nickel layer and the semi-bright nickel layer are sequentially arranged on two sides of the steel base strip from inside to outside, the electroplating process of the iron-nickel bonding layer and the semi-bright nickel layer is a pulse electroplating process, the wettability of the iron-nickel bonding layer is good, the plating layer has good oxidation resistance, oxides influencing wetting reaction are not easily generated on the surface of the plating layer, the ductility and the flexibility of the semi-bright nickel layer are good, the leveling force is excellent, the plating layer does not contain sulfur, the plating layer has a columnar structure and excellent corrosion resistance, the electroplating process of the dark nickel layer is a direct current electroplating process, the dark nickel is the most basic nickel plating process and high in stability, and because the metal nickel has strong passivation capacity, a layer of an extremely thin passivation film can be rapidly generated on the surface, the corrosion of atmosphere, alkali and certain acids can be resisted, and compared with the, the three layers of nickel plating enhance the binding force between the plating layer and the steel base band, the corrosion resistance is obviously improved, when the steel band is used for producing the battery tab, the performances of corrosion resistance, welding and the like are obviously improved, the flexible film layer is arranged on the back surface of the base band, the conductive circuit is arranged on the flexible film layer, and when the circuit is electrified, the flexible film layer is conductive with the steel base band, so that the whole nickel-plated steel band has good conductive performance.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a cross-sectional view of a nickel-plated layer structure of the present invention;

FIG. 3 is a schematic view of the front structure of the base band of the present invention;

fig. 4 is a schematic view of the back structure of the base band of the present invention.

In the figure: 1. a steel base band; 11. a front side of the base band; 12. the back of the base band; 13. drawing the silk thread; 2. plating a nickel layer; 21. an iron-nickel bonding layer; 22. a dark nickel layer; 23. a semi-bright nickel layer; 3. a glue layer; 4. and a flexible membrane layer.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a corrosion-resistant nickel-plated steel strip for a tab includes a steel base strip 1, wherein drawing lines 13 are processed on a front surface 11 of the base strip 1, the drawing lines 13 are uniformly distributed on the front surface 11 of the base strip at equal intervals, a direction of the drawing lines 13 is a length direction of the base strip 1, the drawing lines 13 form lines on the front surface 11 of the base strip, the setting of the drawing lines 13 enables the front surface 11 of the base strip 1 to have a certain roughness, so that an anti-skid capability of the front surface 11 of the base strip on the steel base strip 1 is better improved, the steel base strip 1 has a better metal texture, and a back surface 12 of the base strip 1 is a flat smooth surface. The nickel plating layer 2 is arranged on the front surface 11 and the back surface 12 of the base band of the steel base band 1, the iron-nickel bonding layer 21, the dark nickel layer 22 and the semi-bright nickel layer 23 are arranged on the nickel plating layer 2 from inside to outside in sequence, wherein the iron-nickel bonding layer 21 is in contact with the front surface 11 of the base band and the back surface 12 of the base band, the electroplating process of the iron-nickel bonding layer 21 and the semi-bright nickel layer 23 is a pulse electroplating process, the wettability of the iron-nickel bonding layer 21 is good, because the plating layer has good oxidation resistance, oxides which influence the wetting reaction are not easy to generate on the surface of the plating layer, the ductility and the flexibility of the semi-bright nickel layer 23 are good, the leveling force is excellent, the plating layer does not contain sulfur, and has a columnar structure and excellent corrosion resistance, the electroplating process of the dark nickel layer 22 is a direct current electroplating process, the dark nickel is the most basic nickel, a layer of extremely thin passive film can be rapidly generated on the surface, the corrosion of atmosphere, alkali and certain acid can be resisted, compared with the common single-layer nickel, the three-layer nickel plating enhances the bonding force of a plating layer and a steel base strip 1, the corrosion resistance is obviously improved, and when the steel strip is used for producing the battery tab, the performances such as corrosion resistance, welding and the like are obviously improved. Be provided with gentle rete 4 on the baseband back 12 of steel baseband 1, be provided with the conducting wire on gentle rete 4, when the circuit circular telegram, gentle rete 4 and steel baseband 1 are electrically conductive for whole nickel plating steel band has fine electric conductive property, and the baseband front 11 of steel baseband 1 exposes, is provided with glue film 3 between baseband back 12 and the gentle rete 4, and glue film 3 is the conducting resin, and the conducting resin is the adhesive that has certain electric conductivity after solidification or drying. It usually uses matrix resin and conductive filler, i.e. conductive particles as main components, and combines the conductive particles together by the adhesive action of the matrix resin to form a conductive path, so as to realize the conductive connection of the adhered materials. In the electronic industry, conducting resin has become an indispensable new material, and the level and smooth plain noodles of baseband back 12 pass through glue film 3 and flexonics 4 looks adhesive connection, and the setting of the level and smooth plain noodles of baseband back 12 for steel baseband 1 can be better be connected with flexonics 4, and inseparabler bonding has guaranteed that its outstanding electric conductive property is not influenced.

In conclusion, according to the corrosion-resistant nickel-plated steel strip for the tab, the two sides of the steel base strip 1 are sequentially provided with the three nickel-plated layers 2, namely the iron-nickel bonding layer 21, the dark nickel layer 22 and the semi-bright nickel layer 23 from inside to outside, the electroplating process of the iron-nickel bonding layer 21 and the semi-bright nickel layer 23 is a pulse electroplating process, the wetting property of the iron-nickel bonding layer 21 is good, as the coating has good oxidation resistance, oxides which influence the wetting reaction are not easily generated on the surface of the coating, the ductility and the flexibility of the semi-bright nickel layer 23 are good, the leveling force is excellent, the coating does not contain sulfur, the coating has a columnar structure, the corrosion resistance is excellent, the electroplating process of the dark nickel layer 22 is a direct current electroplating process, the dark nickel is the most basic nickel plating process, the stability is high, and as the metal nickel has strong passivation capacity, a very thin passivation film can, The corrosion of alkali and certain acid, compared with the corrosion of common single-layer nickel, the three-layer nickel plating enhances the binding force between the plating layer and the steel base band 1, the corrosion resistance is obviously improved, when the steel band is used for producing the battery tab, the performances of corrosion resistance, welding and the like are obviously improved, the flexible film layer 4 is arranged on the back surface 12 of the base band, the conductive circuit is arranged on the flexible film layer 4, and when the circuit is electrified, the flexible film layer 4 is conductive with the steel base band 1, so that the whole nickel-plated steel band has good conductive performance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a corrosion-resistant nickel plating steel band for utmost point ear, includes steel base band (1), its characterized in that: the front surface (11) of the base band of the steel base band (1) is processed with the drawing lines (13), the drawing lines (13) are uniformly distributed on the front surface (11) of the base band at intervals, and the back surface (12) of the base band of the steel base band (1) is set as a flat smooth surface;

the front surface (11) and the back surface (12) of the base band of the steel base band (1) are both provided with a nickel plating layer (2), the nickel plating layer (2) is sequentially provided with an iron-nickel bonding layer (21), a dark nickel layer (22) and a semi-bright nickel layer (23) from inside to outside, wherein the iron-nickel bonding layer (21) is in contact with the front surface (11) and the back surface (12) of the base band;

be provided with gentle rete (4) on the baseband back (12) of steel baseband (1), the baseband front (11) of steel baseband (1) expose, are provided with glue film (3) between baseband back (12) and gentle rete (4).

2. The nickel-plated steel strip for the corrosion-resistant tab according to claim 1, which is characterized in that: the direction of the wire drawing grains (13) is the length direction of the steel base band (1).

3. The nickel-plated steel strip for the corrosion-resistant tab according to claim 1, which is characterized in that: the back surface (12) of the base band is bonded and connected with the flexible film layer (4) through the glue layer (3).

4. The nickel-plated steel strip for the corrosion-resistant tab according to claim 1, which is characterized in that: the glue layer (3) is conductive glue.

5. The nickel-plated steel strip for the corrosion-resistant tab according to claim 1, which is characterized in that: and the flexible film layer (4) is provided with a conductive circuit.