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Production equipment and production process of pole piece

A technology of production equipment and production process, which is applied in the field of pole piece production equipment and its production process, can solve the problems of easy breakage in the empty foil area, achieve the effects of reducing scrap rate, reducing production cost, and avoiding breakage

Pending Publication Date: 2019-06-14
东莞天予天正新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a pole piece production equipment to solve the problem that the existing pole piece is prone to breakage when stretching

Method used

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  • Production equipment and production process of pole piece
  • Production equipment and production process of pole piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 Shown, a kind of pole piece production equipment comprises:

[0040] Unwinding mechanism 1;

[0041] Preheating mechanism 6, the preheating mechanism 6 is used to preheat the empty foil area, the preheating mechanism 6 is set between the rolling mechanism 2 and the unwinding mechanism 1, and the preheating method is infrared preheating or electromagnetic induction through the heating column warm up.

[0042] Rolling mechanism 2, the rolling mechanism 2 is used for rolling the pole piece, the pole piece includes a film area with a film layer formed on its surface and an empty foil area without a film layer formed on its surface;

[0043] Stretching mechanism 3, which is used to stretch the pole piece;

[0044] winding mechanism 4; and

[0045] Heating mechanism 5, the heating mechanism 5 is used to heat the empty foil area, the heating mechanism 5 is arranged between the rolling mechanism 2 and the stretching mechanism 3, and the heating method is in...

Embodiment 2

[0056] Such as figure 2 Shown, a kind of pole piece production technology comprises:

[0057] Unwinding process, unwinding the pole piece, the pole piece includes a film area with a film layer formed on its surface and an empty foil area without a film layer formed on its surface;

[0058] The preheating process is to preheat the empty foil area. The preheating temperature is 60~100°C, more preferably 70~90°C, and most preferably 80°C. The preheating method is infrared preheating or electromagnetic induction through the heating column warm up;

[0059] In the rolling process, the film area is rolled to extend the film area;

[0060] In the heating process, the empty foil area is heated, the heating temperature is 150-350°C, more preferably 250-320°C, most preferably 300°C, and the heating method is infrared heating or electromagnetic induction heating through the heating column;

[0061] Stretching process, stretching the empty foil area to extend the empty foil area;

[...

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Abstract

The invention belongs to the technical field of a lithium ion battery, and particularly relates to production equipment of a pole piece. The production equipment comprises an unwinding mechanism, a rolling mechanism, a stretching mechanism, a winding mechanism and a heating mechanism, wherein the rolling mechanism is used for rolling the pole piece; the pole piece comprises a film region and an empty foil region; a film layer is formed on the surface of the film region; a film layer is formed on the surface of the empty foil region; the stretching mechanism is used for stretching the pole piece; the heating mechanism is used for heating the empty foil region; and the heating mechanism is arranged between the rolling mechanism and the stretching mechanism. Relative to the prior art, according to the invention, the heating mechanism is arranged between the rolling mechanism and the stretching mechanism, so that before the pole piece enters the stretching mechanism and after the pole piece enters the rolling mechanism, the empty foil region is heated, and thus, the heated empty foil region can be stretched to specified elongation by a small tension, breakage of the empty foil region of the pole piece in the stretching process is avoided, a scrap rate in the production process of the pole piece is reduced, and production cost of the pole piece is reduced.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to a pole piece production equipment and a production process thereof. Background technique [0002] Lithium-ion batteries have the advantages of light weight and good safety performance, so they have been in a monopoly position in the application of mobile electronic devices such as Bluetooth headsets, mobile phones, notebook computers, tablet computers, cameras, and portable mobile power supplies. At the same time, lithium-ion batteries have also been applied in batches in electric motorcycles, electric vehicles and other fields. [0003] In the manufacturing process of lithium battery pole pieces, it includes mixing, coating, rolling, stretching and other processes; among them, the pole piece includes a film area and an empty foil area, and the purpose of the rolling process is to make the film layer on the pole piece and Foil bonding is more dense and ...

Claims

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Application Information

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IPC IPC(8): H01M4/139H01M4/04B21D35/00
CPCY02E60/10
Inventor 叶帅
Owner 东莞天予天正新能源科技有限公司
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