BATTERY SYSTEM, VEHICLE PROVIDED WITH BATTERY SYSTEM, AND STORAGE DEVICE

Title:

BATTERY SYSTEM, VEHICLE PROVIDED WITH BATTERY SYSTEM, AND STORAGE DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/010439

Kind Code:

A1

Abstract:

[Problem] To effectively stabilize and prevent expansion of a rectangular cell while preventing damage to the outer casing of the rectangular cell. [Solution] A battery system is provided with: a plurality of rectangular cells (1) obtained by accommodating an electrode body (11) in a rectangular exterior casing (12) and sealing the casing in an airtight manner, the electrode body (11) obtained by layering or wrapping a positive electrode (11A) and a negative electrode (11B) interposed by an insulation layer (11C); separators (2) arranged between the rectangular cells (1); and a securing member (3) for pressing on a cell stack (9) obtained by alternatingly layering the rectangular cells (1) and the separators (2) in the layering direction to secure the stack in a pressurized state. The exterior casing (12) of the rectangular cells (1) has an active-substance contact region (12X) in which the inner surface contacts the active-substance application region (11X) of the electrode body (11), and an active-substance non-contact region (12Y) in which the inner surface does not contact the active-substance application region (11X) of the electrode body (11). When the securing member (3) is pressing on the cell stack (9), the separators (2) have an active-substance pressing part (2X) for pressing on the active-substance contact region (12X) of the exterior casing more strongly than on the active-substance non-contact region (12Y).

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Inventors:

SETO TAKASHI (JP)
OKADA WATARU (JP)
NAKAMURA SHINSUKE (JP)

Application Number:

PCT/JP2013/067810

Publication Date:

January 16, 2014

Filing Date:

June 28, 2013

Export Citation:

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Assignee:

SANYO ELECTRIC CO (JP)

International Classes:

H01M50/209; H01M50/264; H01M50/291; H01M50/293; H01M50/55; H01M50/553

Domestic Patent References:

WO2011158341A1	2011-12-22
WO2013098939A1	2013-07-04

Foreign References:

JP2009110833A	2009-05-21
JP2008277042A	2008-11-13
JP2013109858A	2013-06-06

Attorney, Agent or Firm:

NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)

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