VEHICLE BATTERY SYSTEM AND METHOD FOR CONTROLLING SAME

Title:

VEHICLE BATTERY SYSTEM AND METHOD FOR CONTROLLING SAME

Document Type and Number:

WIPO Patent Application WO/2013/038441

Kind Code:

A1

Abstract:

[Problem] To improve the traveling performance for a vehicle equipped with an assembled battery. [Solution] A battery system includes a motor as a driving source for running a vehicle, a high-capacity assembled battery and a high-output assembled battery which can supply electric power for the motor, and a controller which controls charging and discharging for the high-capacity assembled battery and the high-output assembled battery. The high-capacity assembled battery has a relatively larger energy capacity than the high-output assembled battery. The high-output assembled battery can perform charging and discharging with a relatively larger current than the high-capacity assembled battery. The controller continuously discharges the high-capacity assembled battery. The controller controls charging and discharging for the high-output assembled battery in such a way that the SOC of the high-output assembled battery conforms to a prescribed value while continuously discharging the high-capacity assembled battery. While not continuously discharging the high-capacity assembled battery, the controller continuously discharges the high-output assembled battery in such a way that the SOC of the high-output assembled battery decreases lower than a prescribed value.

Inventors:

NISHI YUJI (JP)

Application Number:

PCT/JP2011/005144

Publication Date:

March 21, 2013

Filing Date:

September 13, 2011

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
NISHI YUJI (JP)

International Classes:

B60L3/00; H02J7/00; B60L11/18; B60L50/16

Foreign References:

JP2006121874A	2006-05-11
JP2000295784A	2000-10-20
JP2004215456A	2004-07-29
JPH10271611A	1998-10-09
JP2004111242A	2004-04-08
JPH09298806A	1997-11-18

Other References: