CN219267692U

CN219267692U - Conductive film and battery

Info

Publication number: CN219267692U
Application number: CN202222592399.XU
Authority: CN
Inventors: 贾孟
Original assignee: Kunshan Xinmeiyuan Electronic Technology Co ltd
Current assignee: Kunshan Xinmeiyuan Electronic Technology Co ltd
Priority date: 2022-10-07
Filing date: 2022-10-07
Publication date: 2023-06-27
Anticipated expiration: 2032-10-07

Abstract

The utility model discloses a conductive film, and relates to the technical field of batteries; the insulation film comprises a film layer and two metal layers, wherein the film layer is made of an insulation material, the two metal layers are arranged on two sides of the film layer, the film layer completely isolates the two metal layers, and the glossiness of the metal layers is 10Gu-950Gu. The beneficial effects of the utility model are as follows: the conductive film is reasonable in glossiness, can meet the requirements of customers, and can improve the performance of the battery when applied to products such as the battery.

Description

Conductive film and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a conductive film and a battery.

Background

The conductive film is a conductive film, and has excellent electrical property and lighter quality than a pure metal film, so that the conductive film is widely applied to various industries, and is widely applied to batteries due to the rising of clean energy in recent years. On the other hand, the unsatisfactory glossiness leads to the influence on the charge and discharge performance of the battery in the running process of the battery.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the conductive film with reasonable glossiness and the battery.

The technical scheme adopted for solving the technical problems is as follows: in a conductive film, the improvement comprising: the insulation film comprises a film layer and two metal layers, wherein the film layer is made of an insulation material, the two metal layers are arranged on two sides of the film layer, the film layer completely isolates the two metal layers, and the glossiness of the metal layers is 10Gu-950Gu.

The conductive film in the above technical scheme further comprises two adhesion layers, wherein the two adhesion layers are respectively positioned between the film layer and the metal layer, when the adhesion layers are made of metal, the adhesion layers are made of at least one of Ni, cr, niCu alloy, niCr alloy and NiV alloy, and when the adhesion layers are made of nonmetal, the adhesion layers are made of at least one of polytetrafluoroethylene, polypropylene, polyethylene, titanium nitride, nbOx (x is not less than 1 and not more than 2.5), siC, si3N4, siOx (x is not less than 1.5 and not more than 2), alOx (x is not less than 1.5), polyvinylidene chloride (PVDC) and melamine.

The conductive film in the technical scheme further comprises an oxidation resistant layer, and the oxidation resistant layer is positioned on the metal layer.

The conductive film in the technical scheme further comprises a flame-retardant layer, wherein the flame-retardant layer is formed by adding a flame retardant into the film layer, and the flame-retardant layer is positioned between the film layer and the metal layer.

The conductive film in the above technical solution further includes a reinforcing layer, and the reinforcing layer is located between the thin film layer and the metal layer to strengthen the strength of the conductive film.

The conductive film in the technical scheme further comprises a conductive layer, wherein the conductive layer is formed by adding a conductive agent into the film layer, and the conductive layer is positioned between the film layer and the metal layer.

The conductive film in the technical scheme further comprises a transition layer, wherein the transition layer is made of metal, and the transition layer is located between the film layer and the metal layer.

In the above technical solution, the metal layer is made of copper.

In a battery, the improvement comprising: the battery includes the conductive film as described above, which serves as a current collector of the battery.

The beneficial effects of the utility model are as follows: the conductive film is reasonable in glossiness, can meet the requirements of customers, and can improve the performance of the battery when applied to products such as the battery.

Drawings

Fig. 1 is a schematic structural diagram of a conductive film according to the present utility model.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Example 1: referring to fig. 1, as shown in the drawing, the present utility model provides a conductive film, which includes a thin film layer 1 and two metal layers 2, wherein the metal layers 2 are made of copper, the thin film layer 1 is made of an insulating material, the two metal layers 2 are disposed on two sides of the thin film layer 1, the thin film layer 1 completely separates the two metal layers 2, and the glossiness of the metal layers 2 is 950Gu.

After the metal layer 2 is formed on the film layer 1, the glossiness of the metal layer 2 is designed to be 950Gu, a measuring instrument is a Shenzhen Sanen time technology model YG60 DEG high-precision glossiness meter, and the glossiness conductive film is compounded with customer requirements on the appearance of a product, so that the product qualification rate is improved. For example, the higher the glossiness is, the brighter the conductive film is, the lower the conductive film is, the whiter and the brighter are both not wanted by customers, and the glossiness of the metal layer 2 is also a reaction of the process in the process of forming the metal layer 2, which indicates that the process has problems, such as mixing other impurities on the evaporation material in the vacuum deposition process, so as to form on the film layer 1, thus affecting the conductive property of the conductive film, and possibly when the conductive film is applied in a characteristic environment, such as a current collector, the doped impurities may affect the charge and discharge performance of the battery. Of course, after the production of the conductive film is finished, the holes of the film layer 1 are also required to be detected, the holes are too large to meet the requirements of customers, and the safety problem can also occur after the conductive film is applied to a battery, but when the surface glossiness of the conductive film is large, the CCD hole detection equipment cannot detect the holes, and the holes cannot be detected manually by adopting a flashlight mode, so that the glossiness of the conductive film of the application is also required to be limited.

Example 2: the glossiness of the metal layer 2 of the conductive film provided by the utility model is 10Gu, and other parts are the same as those of the embodiment 1, and are not described herein.

Example 3: the glossiness of the metal layer 2 of the conductive film provided by the utility model is 480Gu, and other parts are the same as those of the embodiment 1, and are not described in detail herein.

In combination with the conductive film provided by the utility model, the utility model can also provide various improvement schemes, and the improvement schemes are as follows:

example 4: the conductive film still include two adhesion layers, two adhesion layers are located respectively between film layer 1 and the metal layer 2, and adhesion layer main effect just increases the adhesion between metal layer 2 and the film layer 1, adhesion layer can be metal material and nonmetal material, all illustrates two kinds of situations in this embodiment: when the adhesive layer is made of metal, the adhesive layer is made of Ni, and when the adhesive layer is made of nonmetal, the adhesive layer is made of polytetrafluoroethylene. Other portions are the same as in embodiment 1, and a detailed description thereof will be omitted.

Example 5: the conductive film further comprises an oxidation-resistant layer, the oxidation-resistant layer is positioned on the metal layer 2, the main method is that the conductive film is subjected to oxidation-resistant liquid, then a layer of oxidation-resistant liquid can be formed on the metal layer 2 by drying, the oxidation-resistant liquid is existing and can well prevent metal oxidation, and other parts are the same as those of the embodiment 1 and are not repeated here.

Example 6: the conductive film further comprises a flame-retardant layer, wherein the flame-retardant layer is formed by adding a flame retardant into the film layer 1, and the flame-retardant layer is arranged between the film layer 1 and the metal layer 2, so that the flame-retardant layer can prevent the conductive film from burning, and other parts are the same as those in the embodiment 1 and are not described in detail herein.

Example 7: the conductive film further comprises a reinforcing layer, the reinforcing layer is located between the film layer 1 and the metal layer 2 to strengthen the strength of the conductive film, the reinforcing layer is a substance capable of increasing the strength of the film layer 1, or a film with higher strength is compounded on the film layer 1 to strengthen the strength of the conductive film, and other parts are the same as those of the embodiment 1 and are not described in detail herein.

Example 8: the conductive film further comprises a conductive layer, wherein the conductive layer is formed by adding a conductive agent into the film layer 1, and the conductive layer is arranged between the film layer 1 and the metal layer 2, so that the conductive performance of the conductive film can be improved, and other parts are the same as those of the embodiment 1 and are not described in detail herein.

Example 9: the conductive film also comprises a transition layer made of metal, wherein the transition layer is positioned between the film layer 1 and the metal layer 2, the transition layer can be formed on the bonding layer in a vacuum coating mode, namely in a vacuum physical lamination mode, and then the metal layer 2 of the conductive film is formed on the transition layer in a vacuum plating or water plating mode. The purpose of forming the transition layer is to facilitate the use of the plating layer for the metal layer 2, because the vacuum plating is expensive and the plating is relatively inexpensive, there are other reasons, such as compactness of the high conductive film, reduction of resistivity of the conductive film, and the like, and other parts are the same as those of embodiment 1, and will not be described herein.

The utility model also provides a battery comprising the conductive film as described above, wherein the conductive film serves as a current collector of the battery.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. A conductive film, characterized in that: the insulation film comprises a film layer and two metal layers, wherein the film layer is made of an insulation material, the two metal layers are attached to two sides of the film layer, the film layer completely isolates the two metal layers, and the glossiness of the metal layers is 10Gu-950Gu.

2. A conductive film according to claim 1, wherein: the conductive film also comprises two adhesive layers, and the two adhesive layers are respectively positioned between the film layer and the metal layer.

3. A conductive film according to claim 1, wherein: the conductive film also comprises an oxidation resistant layer, and the oxidation resistant layer is positioned on the metal layer.

4. A conductive film according to claim 1, wherein: the conductive film further comprises a reinforcing layer, wherein the reinforcing layer is positioned between the film layer and the metal layer to strengthen the strength of the conductive film.

5. A conductive film according to claim 1, wherein: the conductive film also comprises a transition layer made of metal, and the transition layer is positioned between the film layer and the metal layer.

6. A conductive film according to claim 1, wherein: the metal layer is made of copper.

7. A battery, characterized in that: the battery comprises the conductive film according to any one of claims 1 to 6 as a current collector of the battery.