Hybrid vehicle with battery charge control relative to a driving route

• US 5,778,326 A
• Filed: 10/23/1995
• Issued: 07/07/1998
• Est. Priority Date: 10/25/1994
• Status: Expired due to Term

• Current Assignee: Kabushikikaisha Equos Research
• Original Assignee: Kabushikikaisha Equos Research
• Inventors: Hisada, Hideki, Moroto, Shuzo
• Primary Examiner(s): ZANELLI, MICHAEL J
• Application Number:
  US08/546,956
• Time in Patent Office: 988 Days
• Field of Search: 364/423.098, 364/424.026, 364/449.7, 180/65.1, 180/65.2, 180/65.3, 180/65.4
• US Class Current: 701/22
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 2240/486 Operating parameters
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: B60L 7/08 Controlling the braking effect B60L7/04, B60L7/06 take precedence
• CPC Class Codes: B60L 7/18 Controlling the braking effect B60L7/12, B60L7/14, B60L7/16 take precedence
• 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 20/15 Control strategies specially adapted for achieving a particular effect
• CPC Class Codes: B60W 2050/143 Alarm means
• CPC Class Codes: B60W 2050/146 Display means
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 : Brake pedal position
• CPC Class Codes: B60W 2540/16 : Ratio selector position
• CPC Class Codes: B60W 2552/20 : Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
• CPC Class Codes: B60W 2552/25 : Road altitude
• CPC Class Codes: B60W 2555/40 : Altitude
• CPC Class Codes: B60W 2555/60 : Traffic rules, e.g. speed limits or right of way
• CPC Class Codes: B60W 2556/50 : of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: Y02T 10/40 : Engine management systems
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• 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 903/903 : having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/946 : Characterized by control of driveline clutch

Abstract

A hybrid vehicle capable of efficiently regenerating a battery when the driving route is previously defined and of decreasing exhaust gases. A controller calculates a battery stored residual charge from the output of a battery current voltage detection sensor, sets a target value for the battery residual charge in accordance with road information and information of the present location of the vehicle, received from a navigation processor, and adjusts the outputs of a motor and an engine to cause the actual battery residual charge to approach the target value.

Claims

1. A hybrid vehicle, comprising:

a motor;

an internal-combustion engine;

storage means for transferring electric power by supplying power to drive said motor and by receiving electric power generated by said motor;

storage residual charge detection means for detecting a residual charge of said storage means;

present location detection means for detecting a present location of the vehicle;

memory means for memorizing road information including energy information related to residual charge required for the storage means at previously defined points on a driving route;

target value setting means for setting a target value for the residual charge of said storage means at one of said previously defined points ahead of the detected present location based on said energy information stored in said memory means and the present location detected by the present location detection means; and

output adjustment means for adjusting outputs of said motor and said engine to bring the residual charge of said storage means to the target value upon reaching said one previously defined point.

2. The hybrid vehicle according to claim 1, wherein said energy information includes altitudes for said previously defined points along said driving route, and wherein said target value setting means sets the target value based on the altitude of the one previously defined point.

3. The hybrid vehicle according to claim 1, wherein said one previously defined point is a decelerating point for the vehicle, and wherein said target value setting means sets said target value based on the information as to the decelerating point.

4. The hybrid vehicle according to claim 1, wherein said target value is set in accordance with regeneration information as to regenerated power to be charged from said motor to said storage means on the driving route ahead of said one previously defined point, said regeneration information being stored in said memory means.

5. The hybrid vehicle according to claim 1, wherein said target value setting means calculates said target value for each of a plural number of said previously defined points, based on said road information memorized in said memory means.

6. The hybrid vehicle according to claim 1, wherein said target value setting means sets said target value in accordance with information as to the width of road sections between said previously defined points and the speed limit on the road sections included in said road information memorized in said memory means.

7. The hybrid vehicle according to claim 1, wherein the present location detection means comprises a GPS receiving device which detects said present location of the vehicle by signals from an artificial satellite.