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2 stack type jelly roll for secondary battery and battery cell having the same and battery pack having the same and making method of the same

A secondary battery and manufacturing method technology, applied in secondary battery manufacturing, secondary battery, electrolyte storage battery manufacturing and other directions, can solve the problems of unstable alignment, increasing the amount of diaphragm used, reducing the width of the battery stack 20, etc.

Pending Publication Date: 2020-07-21
SK ON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a disadvantage that the width of the jelly roll 10 increases, thereby reducing the energy density and increasing the usage of the diaphragm
[0005] Additionally, having figure 2 The illustrated case of the stack 20 in Z-folded form has the advantage of reducing the width of the stack 20 compared to the coiled approach, thereby increasing energy density and reducing the amount of separator used, but at the expense of processing speed. Relatively slow, and the disadvantage of unstable alignment between the electrodes when stacking the anode 4 and cathode 5

Method used

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  • 2 stack type jelly roll for secondary battery and battery cell having the same and battery pack having the same and making method of the same
  • 2 stack type jelly roll for secondary battery and battery cell having the same and battery pack having the same and making method of the same
  • 2 stack type jelly roll for secondary battery and battery cell having the same and battery pack having the same and making method of the same

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Embodiment Construction

[0031] Hereinafter, an exemplary embodiment of the stacked jelly-roll for a secondary battery according to the present invention as described above will be described in detail with reference to the accompanying drawings.

[0032] exist image 3 , a schematic side view of a stacked jelly-roll 100 for a secondary battery (hereinafter referred to as "jelly-roll") according to an exemplary embodiment of the present invention is shown.

[0033] refer to image 3 , the jelly roll 100 according to the present invention is configured to basically include the first electrode 111, the first electrode 122 and the first electrode 132, the second electrode 112, the second electrode 121 and the second electrode 131 and the diaphragm 115, the diaphragm 125 and the Diaphragm 135. In this case, the diaphragm 115, the diaphragm 125, and the diaphragm 135 are inserted continuously with sufficient thickness to surround the first electrode 111, the first electrode 122, and the first electrode 13...

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Abstract

The present invention relates to a stack type jelly roll for a secondary battery including a cathode, an anode, and a separator. More particularly, the present invention relates to a stack type jellyroll for a secondary battery having a hybrid form of a winding stack manner and a zigzag type stack manner, and a method of manufacturing the same.

Description

technical field [0001] The present invention relates to a jelly roll for a secondary battery, which includes a cathode, an anode, and a separator. More particularly, the present invention relates to a stack type jelly-roll for a secondary battery having a mixed form of a winding stacking manner and a zigzag stacking manner and a method of manufacturing the same. Background technique [0002] A secondary battery is constructed in such a manner that a cell stack formed by sequentially stacking a cathode (positive electrode), a separator, and an anode (negative electrode) is immersed in an electrolytic solution. There are mainly two methods of manufacturing an internal cell stack of a secondary battery as described above. In the case of small secondary batteries, such as figure 1 As shown, the method (winding method) of making an internal cell stack in the form of a jelly roll 10 by placing the anode 1 and the cathode 2 on the separator 3 and then winding the separator 3 is m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/0583H01M50/403H01M50/538
CPCH01M10/0431H01M10/0413H01M10/0583H01M50/538H01M50/403Y02E60/10H01M10/0459H01M10/052H01M10/058Y02P70/50H01M10/0436H01M10/0463H01M50/466H01M50/46H01M4/70
Inventor 姜熙京金泰日
Owner SK ON CO LTD
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