FILM-SHEATHED BATTERY, BATTERY PACK AND METHOD FOR PRODUCING FILM-SHEATHED BATTERY

Title:

FILM-SHEATHED BATTERY, BATTERY PACK AND METHOD FOR PRODUCING FILM-SHEATHED BATTERY

Document Type and Number:

WIPO Patent Application WO/2019/069784

Kind Code:

A1

Abstract:

The present invention provides a film-sheathed battery such that the footprint is reduced without negatively impacting the sealing performance of the battery elements; and a method for producing same. This film-sheathed battery comprises battery elements including a positive electrode and a negative electrode; an electrolyte; and a sheath comprising a film that seals these elements. The sheath comprises: (a) a first portion having a first bottom wall 21 and a first side wall provided so as to stand upright along the entire periphery of the outer edge of the first bottom wall; (2) a second portion having a second bottom surface and a second sidewall which is provided so as to stand upright from at least part of the outer edge of the second bottom surface; and (c) a joining portion which positions the battery elements between the first bottom wall and the second bottom wall, and with the first portion and the second portion facing one another, joins the outer peripheral parts of the first portion and the second portion to one another, and includes a sidewall joining portion in which the first sidewall and the second sidewall are joined to one another, the sidewall joining portion being positioned outside the range of thickness of the battery elements.

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Inventors:

YOSHIDA NOBORU (JP)
INOUE KAZUHIKO (JP)
SHIMURA KENICHI (JP)
OTOHATA MAKIHIRO (JP)

Application Number:

PCT/JP2018/035925

Publication Date:

April 11, 2019

Filing Date:

September 27, 2018

Export Citation:

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Assignee:

NEC CORP (JP)

International Classes:

H01M10/04; H01M50/119; H01M50/121; H01M50/124; H01M50/178; H01M50/548; H01M50/557; H01M50/509; H01M50/51; H01M50/512

Domestic Patent References:

WO2014141524A1

2014-09-18

Foreign References:

JP2010219268A	2010-09-30
JP2012089415A	2012-05-10

Attorney, Agent or Firm:

ITO, Katsuhiro (JP)

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