Hybrid vehicle

• US 20030015874A1
• Filed: 07/17/2002
• Published: 01/23/2003
• Est. Priority Date: 07/18/2001
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Abe, Tatsuo, Inada, Eiji
• Granted Patent: US 6,721,637 B2
• Time in Patent Office: Days
• US Class Current: 290/40C
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/543 the transmission being a continuously variable transmission
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/12 using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• CPC Class Codes: B60W 2050/146 Display means
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2710/08 Electric propulsion units
• CPC Class Codes: B60W 50/0097 Predicting future conditions
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y10S 903/918 : Continuously variable

Abstract

A point at which an external power supply is installed is registered in map data in a map information device as a base point. An EV running area centered on the base point is registered as map data in the map information device, and EV running is performed when a vehicle is in the EV running area.

Claims

1. A hybrid vehicle which includes a generator, an engine which drives the generator, a motor which drives the vehicle and a battery connected to the generator and motor, and performs EV running wherein the vehicle runs under the motor driven with electric power stored in the battery without operating the engine, and HEV running wherein the engine is operated and the vehicle runs under at least one of the engine and the motor, comprising:

an external charge device which charges the battery using an external power supply,

a map information device which includes map data and recognizes the present position of the vehicle on the map data, and

a controller which functions to;

register a point at which the external power supply is installed in the map data in the map information device as a base point,

register an EV running area centered on the base point in the map data in the map information device based on a charge value of the battery, and

perform EV running when the vehicle is in the EV running area.

2. The hybrid vehicle as defined in claim 1, wherein the controller further functions to perform EV running in the EV running area when the battery is charged using the external power supply by the external charge device and the vehicle starts from the base point.

3. The hybrid vehicle as defined in claim 1, wherein the controller further functions to perform EV running when the vehicle is returning to the base point from outside the EV running area, and the vehicle enters the EV running area.

4. The hybrid vehicle as defined in claim 3, wherein the EV running area is an area for which the vehicle can reach the base point before the charge value of the battery falls to a predetermined minimum charge value.

5. The hybrid vehicle as defined in claim 3, wherein the EV running area is determined so that the charge value of the battery coincides with a predetermined minimum charge value when the vehicle reaches the base point.

6. The hybrid vehicle as defined in claim 3, wherein the controller further functions to:

(a) perform EV running from the base point after the charge value of the battery is charged to a predetermined charge value,

(b) register the vehicle position on the map data in the map information device as a boundary point when the charge value has fallen to a predetermined minimum charge value,

(c) compute the distance on the route from the base point to the boundary point as the EV running mileage, using the map data in the map information device,

(d) search a point whose distance on the route from the base point coincides with the EV running mileage, for a route having the same base point different from the route for which the EV mileage was computed, and

(e) register the area around the searched point and the boundary point as the EV running area in the map data in the map information device.

7. The hybrid vehicle as defined in claim 3, wherein the controller further functions to:

update the EV running area so that the charge value coincides with a predetermined minimum charge value when the vehicle has arrived at the base point, based on the shift in the battery charge value when the vehicle performs EV running from the boundary of the EV running area to the base point.

8. The hybrid vehicle as defined in claim 7, wherein the controller further functions to:

compute the distance on the route between a point where the charge value has fallen to the predetermined minimum charge value and the base point when the vehicle performs EV running from the boundary of the EV running area to the base point and the charge value has fallen to the predetermined minimum charge value before arriving at the base point, and

narrow the EV running area by this distance toward the base point.

9. The hybrid vehicle as defined in claim 8, wherein the controller further functions to:

estimate the distance in which the EV running is still possible until the charge value at the base point falls to the predetermined minimum value, when the charge value has not fallen to the predetermined minimum charge value at the base point when the vehicle performs EV running from the boundary of the EV running area to the base point, and

expand the EV running area by the estimated distance.

10. The hybrid vehicle as defined in claim 1, wherein the controller further functions to register the base point on the map data in the map information device when the attributes of the external charge device match the attributes in the vehicle when charging is performed using the external power supply by the external charge device.

11. The hybrid vehicle as defined in claim 1, wherein the charge value is the charge state of the battery.

12. The hybrid vehicle as defined in claim 1, wherein the charge value is the charge amount of the battery.

13. A hybrid vehicle which includes a generator, an engine which drives the generator, a motor which drives the vehicle and a battery connected to the generator and motor, and performs EV running wherein the vehicle runs under the motor driven with electric power stored in the battery without operating the engine, and HEV running wherein the engine is operated and the vehicle runs under at least one of the engine and the motor, comprising:

external charge means for charging the battery using an external power supply,

a map information device which includes map data and recognizes the present position of the vehicle on the map data,

means for registering a point at which the external power supply is installed in the map data in the map information device as a base point,

means for registering an EV running area centered on the base point in the map data in the map information device based on a charge value of the battery, and

means for performing EV running when the vehicle is in the EV running area.