US 2010/0141213 A1Published application

Power supply apparatus for vehicle

AssigneesKabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha

InventorTakahide Iida

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Abstract

A power supply apparatus for a vehicle includes first and second batteries provided electrically in parallel to main loads, a boost converter provided between the first battery and the main loads, a boost converter provided between the second battery and the main loads, an auxiliary battery, a DC/DC converter, and an auxiliary load driven by power from the auxiliary battery or DC/DC converter. The controller determines charging currents or discharging currents for the batteries reflecting variations in a current flowing through the auxiliary load. Accordingly, a power supply apparatus for a vehicle can thus be provided in which imbalance between charging/discharging currents for a plurality of power storage devices is reduced.

Claims8

Dependent claims

A power supply apparatus for a vehicle, comprising:

first and second power storage devices provided electrically in parallel to a main load;
a first power converter provided between said first power storage device and said main load;
a second power converter provided between said second power storage device and said main load;
a third power converter receiving a current divided from a path connecting said first power converter and said first power storage device;
an auxiliary load driven by power from said third power converter;
and
a controller controlling said first to third power converters, wherein
said controller determines charging/discharging currents for said first and second power storage devices reflecting variations in a current flowing through said auxiliary load to control said first power converter and/or second power converter such that the determined currents are charged/discharged.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/451,163Filed 30 May 2008
Priority: JP 2007-1507206 Jun 2007
Published: 10 Jun 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification40 codes

H01M 10/441
Methods for charging or discharging: for several batteries or cells simultaneously or sequentially
B60L 1/00
Supplying electric power to auxiliary equipment of vehicles
B60L 7/14
Dynamic electric regenerative braking: for vehicles propelled by AC motors
B60L 15/007
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles: physical arrangements or structures of…

Family

US 8,143,859 B2Related patent
US 2010/0141213 A1This patent

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