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Patent Searching and Data


Title:
DEVICE FOR CONTROLLING ASSEMBLED BATTERY
Document Type and Number:
WIPO Patent Application WO/2012/066688
Kind Code:
A1
Abstract:
A device for controlling an assembled battery provided with a plurality of single batteries, wherein the device is provided with: a targeted voltage setting means for setting a targeted voltage to equalize voltages of the plurality of single batteries; a capacity adjustment means for adjusting a capacity so that voltages of the plurality of single batteries are equalized at the targeted voltage; an internal state detection means for detecting terminal voltages or SOC of the plurality of single batteries, and on the basis of the detected terminal voltages and SOC, detecting a voltage difference or SOC difference among the plurality of single batteries as voltage difference data and SOC difference data; a time-series data storage means for storing the voltage difference data or the SOC difference data in time-series; and a prediction means for predicting time when the assembled battery becomes a first abnormal state, on the basis of time-dependent change of the voltage difference data or the SOC difference data detected in a voltage region different from the targeted voltage by a predetermined voltage or more or in a SOC region corresponding to the voltage region, among the voltage difference data or the SOC difference data stored in the time-series data storage means. The control device can appropriately predict time when the assembled battery provided with a plurality of single batteries becomes an abnormal state.

Inventors:
KUBOTA TOMOYA
MIYAZAKI YASUHITO
KATO YUKINARI
SHIMOIDA YOSHIO
Application Number:
PCT/JP2010/072074
Publication Date:
May 24, 2012
Filing Date:
December 09, 2010
Export Citation:
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Assignee:
NISSAN MOTOR (JP)
KUBOTA TOMOYA
MIYAZAKI YASUHITO
KATO YUKINARI
SHIMOIDA YOSHIO
International Classes:
G01R31/36; H02J7/00; H02J7/02
Foreign References:
JPS62100670A1987-05-11
JP2003204627A2003-07-18
Other References:
See also references of EP 2642307A4
Attorney, Agent or Firm:
HASHIMOTO, Takeshi et al. (JP)
Hashimoto 剛 (JP)
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Claims: