Control apparatus for hybrid vehicle

• US 10,106,143 B2
• Filed: 07/20/2016
• Issued: 10/23/2018
• Est. Priority Date: 07/22/2015
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ogawa, Yuki
• Primary Examiner(s): Trivedi, Atul
• Application Number:
  US15/215,272
• Publication Number:
  US 20170021820A1
• Time in Patent Office: 825 Days
• Field of Search: 701 22
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 2240/642 Slope of road
• CPC Class Codes: B60L 58/15 Preventing overcharging
• 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 20/12 using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• CPC Class Codes: B60W 20/14 in conjunction with braking regeneration
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• 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 2554/00 Input parameters relating to objects
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2710/244 Charge state
• CPC Class Codes: B60W 30/18018 Start-stop drive, e.g. in a traffic jam
• CPC Class Codes: B60W 30/18127 Regenerative braking
• 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 10/70 : Energy storage systems for electromobility, e.g. batteries
• 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

Abstract

A control apparatus that is applied to a vehicle includes a control unit. The control unit is configured to, when the vehicle is traveling on a specific traffic congestion section at a time when the vehicle has reached a downhill control start point or a traffic congestion control start point, not start any of a downhill control and a traffic congestion control. After the vehicle travels on the specific traffic congestion section, the downhill control or the traffic congestion control is started only when an effect of improvement in fuel consumption resulting from the downhill control or the traffic congestion control is expected.

Claims

1. A control apparatus that is applied to a hybrid vehicle, the hybrid vehicle including an internal combustion engine that serves as a drive source of the hybrid vehicle, an electric motor that serves as a drive source of the hybrid vehicle, and a storage battery that supplies electric power to the electric motor, the hybrid vehicle being configured to perform regenerative braking with use of the electric motor and to charge the storage battery with electric power generated through the regenerative braking, the hybrid vehicle being also configured to charge the storage battery with electric power generated by using output power of the internal combustion engine, the control apparatus comprising:

a control unit configured to control the internal combustion engine and the electric motor such that a required driving force that is required of the hybrid vehicle is satisfied and a remaining amount of charge of the storage battery approaches a target remaining amount of charge set to a normal remaining amount of charge, wherein

the control unit is configured to acquire information pertaining to a scheduled travel route of the hybrid vehicle, the control unit is configured to execute at least one of downhill control and traffic congestion control,

the downhill control is control in which, when it is determined on the basis of the information pertaining to the scheduled travel route that a target downhill section that satisfies a predetermined downhill condition is included in the scheduled travel route, the target remaining amount of charge is changed to a first remaining amount of charge lower than the normal remaining amount of charge when the hybrid vehicle travels on a first section, the first section at least includes, within a section from a downhill control start point that is located a predetermined first distance before a start point of the target downhill section included in the scheduled travel route to an end point of the target downhill section, a section from the downhill control start point to the start point of the target downhill section,

the traffic congestion control is control in which, when it is determined on the basis of the information pertaining to the scheduled travel route that a target traffic congestion section that satisfies a predetermined traffic congestion condition is included in the scheduled travel route, the target remaining amount of charge is changed to a second remaining amount of charge higher than the normal remaining amount of charge when the hybrid vehicle travels on a second section, the second section is a section from a traffic congestion control start point that is located a predetermined second distance before a start point of the target traffic congestion section included in the scheduled travel route to the start point of the target traffic congestion section, and

the control unit is configured to, when the hybrid vehicle is traveling on a specific traffic congestion section at a time when the hybrid vehicle has reached the downhill control start point or the traffic congestion control start point, not start any of the downhill control and the traffic congestion control, and the specific traffic congestion section is a traffic congestion section different from the target traffic congestion section and for which the traffic congestion control is not executed.

2. The control apparatus according to claim 1, wherein the control unit is configured to execute the downhill control, and the control unit is configured to, when the hybrid vehicle is traveling on the specific traffic congestion section at the time when the hybrid vehicle has reached the downhill control start point and the hybrid vehicle is not traveling on the specific traffic congestion section before the hybrid vehicle passes through the first section for the downhill control start point, start the downhill control when a position of the hybrid vehicle is located before the start point of the target downhill section, and prohibit execution of the downhill control when the position of the hybrid vehicle is not located before the start point of the target downhill section.

3. The control apparatus according to claim 1, wherein the control unit is configured to execute the traffic congestion control, and the control unit is configured to, when the hybrid vehicle is traveling on the specific traffic congestion section at the time when the hybrid vehicle has reached the traffic congestion control start point and when the hybrid vehicle is not traveling on the specific traffic congestion section before the hybrid vehicle passes through the second section for the traffic congestion control start point, start the traffic congestion control when the position of the hybrid vehicle is located a distance longer than a predetermined third distance before the start point of the target traffic congestion section, and prohibit execution of the traffic congestion control when the position of the hybrid vehicle is not located the distance longer than the third distance before the start point of the target traffic congestion section.

4. The control apparatus according to claim 1, wherein the specific traffic congestion section is shorter than a distance threshold.

5. The control apparatus according to claim 1, wherein the specific traffic congestion section is longer than a distance threshold, and a distance between a current position of the hybrid vehicle and the start point of the target traffic congestion section is shorter than a precharge distance at a time when the control unit executes a process of searching for the target traffic congestion section.

6. The control apparatus according to claim 1, wherein the specific traffic congestion section is a traffic congestion section that has occurred after the control unit has executed a process of searching for the target traffic congestion section a last time.

7. A vehicle control apparatus comprising:

an internal combustion engine that serves as a drive source of a vehicle;

an electric motor that serves as a drive source of the vehicle and that performs regenerative braking;

a storage battery that supplies electric power to the electric motor, that is charged with electric power generated through the regenerative braking and that is charged with electric power generated by using output power of the internal combustion engine; and

a control unit configured to control the internal combustion engine and the electric motor such that a required driving force that is required of the vehicle is satisfied and a remaining amount of charge of the storage battery approaches a target remaining amount of charge set to a normal remaining amount of charge, wherein

the control unit is configured to acquire information pertaining to a scheduled travel route of the vehicle, the control unit is configured to execute at least one of downhill control and traffic congestion control,

the downhill control is control in which, when it is determined on the basis of the information pertaining to the scheduled travel route that a target downhill section that satisfies a predetermined downhill condition is included in the scheduled travel route, the target remaining amount of charge is changed to a first remaining amount of charge lower than the normal remaining amount of charge when the vehicle travels on a first section, the first section at least includes, within a section from a downhill control start point that is located a predetermined first distance before a start point of the target downhill section included in the scheduled travel route to an end point of the target downhill section, a section from the downhill control start point to the start point of the target downhill section,

the traffic congestion control is control in which, when it is determined on the basis of the information pertaining to the scheduled travel route that a target traffic congestion section that satisfies a predetermined traffic congestion condition is included in the scheduled travel route, the target remaining amount of charge is changed to a second remaining amount of charge higher than the normal remaining amount of charge when the vehicle travels on a second section, the second section is a section from a traffic congestion control start point that is located a predetermined second distance before a start point of the target traffic congestion section included in the scheduled travel route to the start point of the target traffic congestion section, and

the control unit is configured to, when the vehicle is traveling on a specific traffic congestion section at a time when the vehicle has reached the downhill control start point or the traffic congestion control start point, not start any of the downhill control and the traffic congestion control, and the specific traffic congestion section is a traffic congestion section different from the target traffic congestion section and for which the traffic congestion control is not executed.

8. The vehicle control apparatus according to claim 7, wherein the control unit is configured to execute the downhill control, and the control unit is configured to, when the vehicle is traveling on the specific traffic congestion section at the time when the vehicle has reached the downhill control start point and the vehicle is not traveling on the specific traffic congestion section before the vehicle passes through the first section for the downhill control start point, start the downhill control when a position of the vehicle is located before the start point of the target downhill section, and prohibit execution of the downhill control when the position of the vehicle is not located before the start point of the target downhill section.

9. The vehicle control apparatus according to claim 7, wherein the control unit is configured to execute the traffic congestion control, and the control unit is configured to, when the vehicle is traveling on the specific traffic congestion section at the time when the vehicle has reached the traffic congestion control start point and when the vehicle is not traveling on the specific traffic congestion section before the vehicle passes through the second section for the traffic congestion control start point, start the traffic congestion control when the position of the vehicle is located a distance longer than a predetermined third distance before the start point of the target traffic congestion section, and prohibit execution of the traffic congestion control when the position of the vehicle is not located the distance longer than the third distance before the start point of the target traffic congestion section.

10. The vehicle control apparatus according to claim 7, wherein the specific traffic congestion section is shorter than a distance threshold.

11. The vehicle control apparatus according to claim 7, wherein the specific traffic congestion section is longer than a distance threshold, and a distance between a current position of the vehicle and the start point of the target traffic congestion section is shorter than a precharge distance at a time when the control unit executes a process of searching for the target traffic congestion section.

12. The control apparatus according to claim 7, wherein the specific traffic congestion section is a traffic congestion section that has occurred after the control unit has executed a process of searching for the target traffic congestion section a last time.