POWER SUPPLY UNIT FOR HYBRID CAR

Japanese Patent JP3706565

B2

PROBLEM TO BE SOLVED: To use a secondary battery for driving and a secondary battery for electrical equipment under a close to ideal condition by making effective use of preferred characteristics of the secondary battery for driving and the secondary battery for electrical equipment.
SOLUTION: This power supply unit for hybrid car includes a secondary battery for driving 1 which drives a motor 8 for running, a secondary battery for electrical equipment 2, a step-down circuit 3 for converting an output voltage of the secondary battery for driving 1 to a voltage for charging the secondary battery for electrical equipment 2, a step-up circuit 4 for converting an output voltage of the secondary battery for electrical equipment 2 to a voltage for charging the secondary battery for driving 1, and a battery control circuit 5 for charging the secondary battery for electrical equipment 2 with the secondary battery for driving 1 through the step-down circuit 3 and charging the secondary battery for driving 1 with the secondary battery for electrical equipment 2 via the step-up circuit 4. In this power supply unit, the battery control circuits 5 controls the step-down circuit 3 and the step-up circuit 4, and mutual charging/discharging is performed between the secondary battery for driving 1 and the secondary battery for electrical equipment 2.

Shoichi Toya

JP2001286687A

October 12, 2005

September 20, 2001

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Sanyo Electric Co., Ltd.

B60K6/20; B60K6/28; B60K6/44; B60K6/52; H02J7/00; B60L11/18; B60W10/26; B60W20/00; H01M10/44; (IPC1-7): B60L11/18; B60K6/04; H01M10/44; H02J7/00

JP11008910A
JP8033119A
JP11164494A
JP10174201A
JP10290532A
JP9308131A
JP200014032A

Yasuhiro Toyosu

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