Electrode manufacturing device and electrode manufacturing method

An electrode manufacturing and electrode technology, which is applied in the field of electrode manufacturing equipment and electrode manufacturing, can solve the problems of limited location, low thermal efficiency, large surface area, etc., and achieve the effect of reducing length and improving thermal efficiency

Inactive Publication Date: 2011-12-28
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For drying furnaces with long furnace lengths, the installation position is limited
In addition, large drying ovens have a large volume and large surface area, so the thermal efficiency is low
Also, when performing double-sided coating, even larger drying ovens are required

Method used

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  • Electrode manufacturing device and electrode manufacturing method
  • Electrode manufacturing device and electrode manufacturing method
  • Electrode manufacturing device and electrode manufacturing method

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In this embodiment, the present invention is realized by an electrode manufacturing apparatus and an electrode manufacturing method for manufacturing an electrode of a lithium ion secondary battery.

[0035] A lithium ion secondary battery electrode manufactured by the electrode manufacturing apparatus according to this embodiment will now be described. Such as figure 1 As shown in the cross-sectional view in , the electrode 1 manufactured by the electrode manufacturing apparatus according to this embodiment is obtained by applying the coating layer 3 to both sides of the strip-shaped electrode foil 2 . figure 1 is a cross-sectional view showing a cross-section in the width direction of the electrode 1 . Coating layer 3 is an active material layer formed by coating and then drying a coating material so that the coating material adheres to electrode foil ...

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PUM

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Abstract

An electrode manufacturing apparatus (100) is provided with an unwinding unit (10), a first oven end unit (20), a drying oven (30), a second oven end unit (80), and a winding unit (90). The first oven end unit (20) is provided with a first coating unit (27) that coats a first side of an electrode foil (2) and a second coating unit (28) that coats a second side of the electrode foil (2). The electrode manufacturing apparatus (100) is further provided with turn-back roller pairs (25), (26), (85), (86) that invert an advancement direction of the electrode foil and displace a width direction position of the electrode foil by turning the electrode foil back at an angle. As a result, the coated electrode foil (2) reciprocates through the interior of the drying oven (30) at least one and a half times.

Description

technical field [0001] The present invention relates to an electrode manufacturing apparatus and an electrode manufacturing method for manufacturing secondary battery electrodes, and more particularly to an electrode manufacturing apparatus and an electrode manufacturing method that can be used to shorten the furnace length of a drying furnace. Background technique [0002] An electrode in which an electrode foil is coated with an active material can be used as an electrode for a secondary battery such as a lithium ion secondary battery. To manufacture this type of electrode, a roll of electrode foil is coated with a coating material obtained by mixing an active material and a binder, followed by drying of the coating. For this reason, the coated electrode foil is usually dried while being conveyed through a drying oven. [0003] When the electrode foil is dried quickly, convection or air bubbles may be generated in the coating material in the film thickness direction insid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/139
CPCH01M4/0404Y02E60/122H01M4/0409H01M4/04Y02E60/10B05C5/02B05D3/00F26B13/00
Inventor 永松茂隆
Owner TOYOTA JIDOSHA KK
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