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Mandrels for the manufacture of jelly-roll electrode assemblies

A mandrel and fruit-making technology, applied in the direction of winding/folding electrodes, electrode manufacturing, electrical components, etc., can solve the problem of battery safety reduction, achieve the effect of reducing manufacturing costs and time, and ensuring safety

Active Publication Date: 2016-08-31
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the stress generated in the subsequent process, that is, the process of compressing the jelly-roll electrode assembly, is further applied to the folded portion of the sheet-type stack, the folded portion of the sheet-type stack is broken, thereby reducing the safety of the battery.

Method used

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  • Mandrels for the manufacture of jelly-roll electrode assemblies
  • Mandrels for the manufacture of jelly-roll electrode assemblies
  • Mandrels for the manufacture of jelly-roll electrode assemblies

Examples

Experimental program
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Embodiment Construction

[0046] Now, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted, however, that the scope of the present invention is not limited by the illustrated embodiments.

[0047] figure 2 and image 3 is a cross-sectional view typically showing a mandrel according to an embodiment of the invention, and Figure 4 is typically shown figure 2 Perspective view of mandrel.

[0048] Referring to these drawings, the mandrel 100 is elliptical in a section perpendicular to the rotation center axis 30 of the mandrel 100 . The mandrel 100 is divided into a first mandrel part 10 located at the left side of a central area of ​​the mandrel 100 in which an end part of a sheet-type stack (not shown) is fixedly fitted; and The second mandrel part 20 is located at the right side of the central area of ​​the mandrel 100 .

[0049] Each of the first mandrel part 10 and the second mandrel part 20 includes a main ...

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Abstract

The present invention provides a mandrel used during a winding process for manufacturing a jelly-roll type electrode assembly including an anode / separator / cathode structure using a long sheet type laminate. The mandrel is characterized in that the shape of the perpendicular cross-section with respect to the central axis of rotation is elliptical; with respect to the central part, the mandrel is separated into a first mandrel part on one side and a second mandrel on the other side part, the end part of the sheet type lamination is inserted and fixed into the central part, wherein each of the first mandrel part and the second mandrel part comprises a main part and a replaceable part, the main part includes an inserting and interlocking The area of ​​sheet type lamination, the replaceable part is attached to and detached from the main part and includes the end of the long axis of the mandrel.

Description

technical field [0001] The present invention relates to a mandrel for manufacturing a jelly-roll type electrode assembly, and, more particularly, to a mandrel configured as an elongated sheet for use in a cathode / separator / anode structure. The stack is used in a winding process for producing a jelly-roll type electrode assembly in which the mandrel is elliptical in a section perpendicular to the central axis of rotation of the mandrel and the mandrel is divided to be located at one side of the central region of the mandrel The first mandrel part and the second mandrel part located at the other side of the central area of ​​the mandrel, the end part of the sheet-type stack is fixedly fitted in the central area of ​​the mandrel, and the first mandrel part and The second mandrel parts each include a main body part having a region in which a sheet-type stack is fitted in an engaged state, and a replacement part detachably mounted to the main body part, the replacement part having ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04H01M4/04H01M10/052
CPCH01M10/0409H01M10/0431Y02E60/10Y02P70/50B65H18/04H01M10/0587H01M4/04
Inventor 郑在喆金学均金东明金纯焕余昌信
Owner LG ENERGY SOLUTION LTD