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Method for producing mono-cell

A manufacturing method and single-cell technology, which is applied in secondary battery manufacturing, secondary batteries, lithium batteries, etc., can solve problems such as ceramic layer peeling, and achieve the effect of inhibiting peeling

Inactive Publication Date: 2019-10-18
ENVISION AESC JAPAN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such a separator and electrodes are bonded with an adhesive applied in dots as described above, the ceramic layer may be peeled off.

Method used

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  • Method for producing mono-cell
  • Method for producing mono-cell
  • Method for producing mono-cell

Examples

Experimental program
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Embodiment Construction

[0015] Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

[0016] figure 1 schematically shows an electrode stacking device 2 for continuously manufacturing single cells 1 as a basic stack, figure 2 and image 3 A single cell 1 manufactured by the electrode lamination device 2 is schematically shown. Here, in the following description, for the sake of easy understanding, the single cell 1 and the electrode stacking device 2 are represented as Figure 1 ~ Figure 3 The posture of the body is called "up and down" as a reference.

[0017] Such as figure 2 and image 3 As shown, in the present embodiment, for the unit cell 1, a photo-shaped separator 4, a sheet-shaped positive electrode 6 as an electrode, a sheet-shaped separator 8, and a sheet-shaped negative electrode as an electrode are arranged from the top. 10 layers are stacked in order and joined to each other to form a 4-layer structure integrally.

[0018] The ...

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Abstract

In this method for producing a mono-cell (1), the mono-cell (1) comprises a separator (4), a positive electrode (6), a separator (8), and a negative electrode (10) which are joined with one another. Each separator (4, 8) has a ceramic layer (22, 23) on a surface opposing the positive electrode (6). On each of the lower surface (6a) and the upper surface (6b) of the positive electrode (6), an adhesive (46, 48) is applied at a plurality of points lined up on a straight line along the width direction (W) orthogonal to the mono-cell transportation direction (D). When an application length is defined as the product of the number of application points of the adhesive (46, 48) lined up in the width direction (W) and the application diameter of each adhesive, the number of application points and the application diameter are set such that a value found by dividing, by said application length, a force applied to each ceramic layer (22, 23) on the basis of acceleration and the weight of the separator (4) etc. during suction and transportation becomes smaller than the necessary peeling strength per unit length of the ceramic layer (22, 23).

Description

technical field [0001] The present invention relates to a method of manufacturing a single cell in which a positive electrode and a negative electrode are respectively bonded to both surfaces of a separator including a ceramic layer. Background technique [0002] Patent Document 1 discloses a method for producing an electrode laminate used in a lithium secondary battery. In this manufacturing method, in order to improve the productivity of the lithium secondary battery, an electrode laminate serving as a power generating element is formed by laminating a plurality of basic laminates comprising: a bagged electrode sandwiched as A sheet-shaped positive electrode of the electrode is formed by joining a pair of sheet-shaped separators to each other; and a sheet-shaped negative electrode is the electrode, which is joined to the packaged electrode. The bonding between the positive electrode and the separator and between the negative electrode and the packed electrode (that is, th...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M2/16H01M50/417H01M50/434H01M50/451
CPCH01M10/0404H01M10/0413H01M10/052H01M10/0585Y02E60/10H01M50/461Y02P70/50H01M50/417H01M50/451H01M50/434H01M10/0436H01M50/403H01M50/446H01M50/449H01M2004/027H01M2004/028
Inventor 山下刚史佐藤隆宪白井贤一长岛富雄增田有沙
Owner ENVISION AESC JAPAN LTD
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