POWER STORAGE APPARATUS, MOBILE DEVICE, AND ELECTRIC-POWERED VEHICLE

Title:

POWER STORAGE APPARATUS, MOBILE DEVICE, AND ELECTRIC-POWERED VEHICLE

Document Type and Number:

WIPO Patent Application WO/2012/160754

Kind Code:

A1

Abstract:

Provided is a power storage apparatus with an impedance measurement function that has a plurality of power storage elements connected in series, and that can evaluate a deteriorated power storage element in a short period of time. The power storage apparatus with an impedance measurement function specifies a power storage element that has the highest impedance among all the power storage elements, and the impedance thereof, and detects and displays deterioration or abnormality thereof using threshold-value evaluation, by measuring and comparing the impedance of a half of power-storage units on the higher-voltage side and a half of the power-storage units on the lower-voltage side using a first evaluation circuit, and measuring the impedance of a higher-voltage side power storage element and a lower-voltage side power storage element of the power-storage unit that was evaluated as having a higher impedance, selectively using a second evaluation circuit connected in juxtaposition to the power-storage unit that was evaluated as having a higher impedance.

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Inventors:

KURANUKI MASAAKI

Application Number:

PCT/JP2012/002773

Publication Date:

November 29, 2012

Filing Date:

April 23, 2012

Export Citation:

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Assignee:

PANASONIC CORP (JP)
KURANUKI MASAAKI

International Classes:

H01M10/42; G01R31/36; H01M10/44; H01M10/48; H02J7/00

Foreign References:

JP2007294322A	2007-11-08
JPH07322516A	1995-12-08
JP2006507790A	2006-03-02
US4743855A	1988-05-10
JP2007294322A	2007-11-08
JP4138502B2	2008-08-27

Other References: