POWER SUPPLY CONTROL DEVICE FOR VEHICLE

• US 20090289498A1
• Filed: 10/04/2007
• Published: 11/26/2009
• Est. Priority Date: 10/23/2006
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kataoka, Kenji, Hontani, Kenji, Shinagawa, Masahiko
• Granted Patent: US 8,648,489 B2
• Time in Patent Office: Days
• US Class Current: 307/10.100
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00

Abstract

A power supply control device for a vehicle includes a plurality of electrical loadings installed in a vehicle; a feeding part configured to supply electric power to the electrical loadings; and a presumption part configured to presume an electrical power demand for operating the electrical loadings based on sign information for foreseeable operations of the electrical loadings. Electrical power supply from the feeding part to each electrical loading is adjusted based on the result of presumption by the presumption part.

Claims

1. A power supply control device for a vehicle, comprising:

a plurality of electrical loadings installed in a vehicle;

a feeding part configured to supply electric power to the electrical loadings; and

a presumption part configured to presume an electrical power demand for operating the electrical loadings based on sign information for foreseeable operations of the electrical loadings;

wherein electrical power supply from the feeding part to each electrical loading is adjusted based on the result of presumption by the presumption part.

2. The power supply control device for the vehicle as claimed in claim 1,

wherein the presumption part presumes timing of electric power consumption of the electrical loadings and controls so that the timing at the electrical loadings is not overlapped.

3. The power supply control device for the vehicle as claimed in claim 2,

wherein, at the electrical loading, the electrical power consumption is generated at the time when a grace period passes after the electric power consumption is required.

4. The power supply control device for the vehicle as claimed in claim 3,

wherein the length of the grace period is changed based on the sign information.

5. The power supply control device for the vehicle as claimed in claim 3,

wherein each of the electrical loading compares a grace period of other electrical loading received via a communication line and generates electric power consumption when own grace period is shortest.

6. The power supply control device for the vehicle as claimed in claim 5,

wherein the grace period sent via the communication line is shorter than a grace period of the electrical loading of a sender.

7. The power supply control device for the vehicle as claimed in claim 1,

wherein the presumption part presumes a consumption electrical current of the electrical loading;

and

control is performed so that the sum of the consumption electrical currents presumed by the presumption part does not exceed a feeding limitation value of the feeding part.

8. The power supply control device for the vehicle as claimed in claim 7,

wherein the electrical current supplied from the feeding part to the electrical loading is limited.

9. The power supply control device for the vehicle as claimed in claim 7,

wherein the feeding limitation value is heightened by increasing a feeding capability of the feeding part.

10. The power supply control device for the vehicle as claimed in claim 1,

wherein a control device is provided for every electrical loading;

and

each control device includes the presumption part.

11. The power supply control device for the vehicle as claimed in claim 1,

wherein a first electrical loading configured to consume electrical power based on a steering state of the vehicle is contained in the electrical loading;

and

the presumption by the presumption part is performed based on a sight line or a face direction of a driver, sign of operation of the first electrical loading.

12. The power supply control device for the vehicle as claimed in claim 1,

wherein a first electrical loading configured to consume an electrical power based on a steering state of the vehicle is contained in the electrical loading;

and

the presumption by the presumption part is performed based on a configuration of a load, sign of operation of the first electrical loading.

13. The power supply control device for the vehicle as claimed in claim 1,

wherein a second electrical loading configured to consume electrical power based on horizontal acceleration of the vehicle is contained in the electrical loading;

and

the presumption by the presumption part is performed based on a configuration of a load, sign of operation of the second electrical loading.

14. The power supply control device for the vehicle as claimed in claim 1,

wherein a third electrical loading configured to consume an electrical power based on a braking state of the vehicle is contained in the electrical loading;

and

the presumption by the presumption part is performed based on a loading given to a braking control part to the driver, sign of operation of the third electrical loading.

15. The power supply control device for the vehicle as claimed in claim 1,

wherein a fourth electrical loading configured to consume an electrical power based on the rotational speed of engine of the vehicle is contained in the electrical loading;

and

the presumption by the presumption part is performed based on the rotational speed of the engine, sign of operation of the fourth electrical loading.

16. The power supply control device for the vehicle as claimed in claim 11,

wherein the first electrical loading is a motor for providing for an electrically driven power steering.

17. The power supply control device for the vehicle as claimed in claim 11,

wherein the second electrical loading is a motor for providing for an electrically driven stability control device.

18. The power supply control device for the vehicle as claimed in claim 14,

wherein the third electrical loading is a motor for providing for an electrically driven brake device.

19. The power supply control device for the vehicle as claimed in claim 15,

wherein the fourth electrical loading is a secondary air supply device.