CHARGE HOLDING METHOD FOR LITHIUM-ION SECONDARY BATTERY, BATTERY SYSTEM, VEHICLE, AND BATTERY-MOUNTED DEVICE

Title:

CHARGE HOLDING METHOD FOR LITHIUM-ION SECONDARY BATTERY, BATTERY SYSTEM, VEHICLE, AND BATTERY-MOUNTED DEVICE

Document Type and Number:

WIPO Patent Application WO/2010/125649

Kind Code:

A1

Abstract:

Provided is a lithium-ion secondary battery charge holding method capable of suppressing the capacity drop of a battery. Also provided are a battery system capable of suppressing the battery capacity drop, a vehicle having the battery system mounted therein, and a battery-mounted device. The lithium-ion secondary battery charge holding method for charging and holding a lithium-ion secondary battery (101) using anode activating substance particles (135) made of a two-phase coexisting type anode activating substance (PM) in an anode plate (130) comprises a super-overcharging step (S7) for charging the lithium-ion secondary battery so that the SOC (state of charge) (SC) of the same may be a super SOC at or lower than 100 % but higher than a target SOC, a return-discharging step (S8) for discharging the lithium-ion secondary battery after the super-overcharging step so that the SOC may be the target SOC, and a holding step (S10).

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Inventors:

ABE TAKESHI (JP)
TSUJIKO AKIRA (JP)
HARA TOMITARO (JP)
WASADA KEIKO (JP)
YUASA SACHIE (JP)

Application Number:

PCT/JP2009/058378

Publication Date:

November 04, 2010

Filing Date:

April 28, 2009

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
ABE TAKESHI (JP)
TSUJIKO AKIRA (JP)
HARA TOMITARO (JP)
WASADA KEIKO (JP)
YUASA SACHIE (JP)

International Classes:

H01M10/44; H02J7/02

Foreign References:

JP2008259260A	2008-10-23
JP2003346911A	2003-12-05
JP2006012613A	2006-01-12
JP2002280080A	2002-09-27

Other References: