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Title:
CABLE TYPE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2016/129939
Kind Code:
A1
Abstract:
Provided is a cable type secondary battery comprising: an inner electrode support; and a sheet-like inner electrode - separation layer - outer electrode complex which is spirally wound around the outer side of the inner electrode support, wherein the inner electrode - separation layer - outer electrode complex is formed such that an inner electrode, a separation layer which prevents an electrode from shorting, and an outer electrode are compressed integrally. According to one embodiment of the present invention, an electrode and a separation layer are bonded integrally so that the separation layer in close contact with the electrode absorbs electrolyte so as to induce a uniform supply of the electrolyte to an outer electrode active material layer, thereby increasing the stability and performance of a cable type secondary battery. In addition, the cable type secondary battery has a sheet-like electrode, excluding a wire type current collector having a high resistance, whereby the resistance of the cable type secondary battery is reduced and the performance of the battery may be improved. Further, since the cable type secondary battery has an inner electrode support with an open structure and a sheet-like electrode-separation layer complex is wound spirally like a spring structure, it is possible to maintain a linear shape and mitigate stress caused by external forces.

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Inventors:
UHM IN-SUNG (KR)
KIM JE-YOUNG (KR)
KWON YO-HAN (KR)
Application Number:
PCT/KR2016/001407
Publication Date:
August 18, 2016
Filing Date:
February 11, 2016
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/058; H01M4/13; H01M4/62; H01M4/75; H01M50/119; H01M50/121; H01M50/124; H01M50/141
Foreign References:
KR20140132289A2014-11-17
KR20140047010A2014-04-21
KR20130040166A2013-04-23
KR101470555B12014-12-10
KR20110089583A2011-08-09
Other References:
See also references of EP 3244476A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
특허법인 필앤온지 (KR)
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