Stack-folding-type electrode assembly

一种电极组件、折叠型的技术，应用在电池组零部件、电气元件、电池电极等方向，能够解决电池性能劣化、电池强度降低、电池变形等问题，达到改善粘结强度、降低易于变形的危险、防止劣化的效果

Active Publication Date: 2016-03-09
LG ENERGY SOLUTION LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, during the operation of the battery, the loose phenomenon inside the battery is caused by the gas generated by the decomposition of the electrolyte and the side reaction of the battery, resulting in the deterioration of the battery performance
That is, the battery inevitably swells, thereby deteriorating battery performance, and if an external impact occurs, the battery is easily deformed, and the strength of the battery may decrease
In particular, the likelihood of these problems increases when used at high temperatures

Method used

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Examples

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Embodiment Construction

[0044] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and appended claims should not be construed as limited to the ordinary dictionary meaning, but should be based on the principle of allowing the inventor to define the term appropriately for the best interpretation Meanings and concepts corresponding to technical aspects of the present invention are explained. Therefore, the descriptions presented herein are preferred examples for illustrative purposes only, and are not intended to limit the scope of the present invention, so it should be understood that other equivalent changes can be made thereto without departing from the spirit and scope of the present invention. and modify.

[0045] The present invention relates to a stacked-fold type electrode assembly in which a plurality of full cells or bicell...

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Abstract

The present invention is: a stack-folding-type electrode assembly which includes an anode, a cathode, and a first separator interposed between the anode and the cathode, and which overlaps a plurality of unit cells by enclosing full cell or bi-cell unit cells using a second separator; and is a stack-folding-type electrode assembly characterized in that the first separator has a first binder deposited on at least a portion of a surface thereof, the second separator has a second binder deposited on at least a portion of a surface thereof, and the content of the second binder is greater than the content of the first binder. A stack-folding-type electrode assembly may be provided with which the creation of gaps inside a battery can be prevented, there is little expansion of a battery, and there is little deformation even after an external impact.

Description

technical field [0001] The present invention relates to a stack-fold type electrode assembly. More particularly, the present invention relates to a stacked-folded type electrode assembly of an electrochemical device having improved battery performance. [0002] This application claims priority from Korean Patent Application No. 10-2013-0131584 filed in Korea on Oct. 31, 2013, the disclosure of which is incorporated herein by reference. Background technique [0003] Recently, interest in energy storage technologies has been increasing. Efforts in research and development of batteries have been increasing as the applications of energy storage technology have expanded to include mobile phones, camcorders, laptop computers, and even electric vehicles. In this regard, electrochemical devices have received the greatest attention, especially with the recent trend toward miniaturization and weight reduction of electronic devices, the development of secondary batteries that are sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0583H01M4/62H01M2/14H01M2/02H01M50/414H01M50/431H01M50/449H01M50/451H01M50/489
CPCH01M10/0583H01M4/13H01M10/0459H01M10/052H01M10/0436H01M4/623Y02E60/10H01M50/446H01M50/46H01M50/461H01M50/449Y02P70/50H01M50/489H01M50/451H01M50/414H01M50/431H01M10/0525H01M10/058H01M2220/30H01M50/103H01M4/622H01M50/411Y02T10/70
Inventor 朴智慧李在宪李修林吴松泽崔正锡李赫武
Owner LG ENERGY SOLUTION LTD
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