Method and Device for Controlling a Hybrid Vehicle Drive

• US 20080029320A1
• Filed: 07/30/2007
• Published: 02/07/2008
• Est. Priority Date: 07/28/2006
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Sauvlet, Nils, Fleckner, Marco, Kraxner, Dieter, Gohring, Markus
• Granted Patent: US 8,024,081 B2
• Time in Patent Office: Days
• US Class Current: 180/65.2
• CPC Class Codes: B60K 6/48 Parallel type
• 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 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• 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: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/907 Electricity storage, e.g. battery, capacitor

Abstract

A method and a device for controlling a hybrid vehicle drive. The device contains a multiplicity of control parameter sets with different set point charge states for a high performance battery of the electric motor. The set point charge states are assigned to a respective operating mode of the vehicle. A definition device for defining a current operating mode of the vehicle, as a result of which a control parameter set which corresponds to the defined current operating mode of the vehicle can be used to control a charge mode of the high performance battery of the electric motor with a corresponding set point charge state.

Claims

1. A method for controlling a hybrid vehicle drive having an internal combustion engine and an electric motor, which comprises the steps of:

providing a multiplicity of control parameter sets with different set point charge states for a high performance battery of the electric motor;

assigning a respective operating mode of a vehicle to the multiplicity of control parameter sets;

defining a current operating mode of the vehicle; and

using a respective control parameter set of the control parameter sets, corresponding to the current operating mode of the vehicle, to control a charge mode of the high performance battery of the electric motor with a corresponding set point charge state.

2. The method according to claim 1, which further comprises correlating the current operating mode to correspond to a respective road type detected by a navigation device.

3. The method according to claim 1, which further comprises correlating the current operating mode to correspond to a respective traffic situation detected by a traffic situation detection device.

4. The method according to claim 1, which further comprises correlating the current operating mode to correspond to a respective road gradient detected by a gradient detection device.

5. The method according to claim 1, which further comprises correlating the current operating mode to correspond to a respective terrain type detected by a terrain type detection device.

6. The method according to claim 1, which further comprises correlating the current operating mode to correspond to a respective vehicle velocity detected by a velocity detection device.

7. The method according to claim 1, which further comprises:

defining a multiplicity of possible set point charge states on a basis of the current operating mode of the vehicle; and

prioritizing one of the set point charge states in accordance with a predefined prioritization scheme.

8. A device for controlling a hybrid vehicle drive having an internal combustion engine and an electric motor, the device comprising:

with different set point charge states for a high performance battery of the electric motor, said set point charge states being assigned to a respective operating mode of a vehicle; and

a definition device for defining a current operating mode of the vehicle, a respective control parameter set of said control parameter sets corresponding to the current operating mode of the vehicle being used to control a charge mode of the high performance battery of the electric motor with a corresponding set point charge state.

9. The device according to claim 8, wherein said definition device has a navigation device, and the current operating mode corresponds to a respective road type detected by said navigation device.

10. The device according to claim 8, wherein said definition device has a traffic situation detection device, and the current operating mode corresponds to a respective traffic situation detected by said traffic situation detection device.

11. The device according to claim 8, wherein said definition device has a gradient detection device, and the current operating mode corresponds to a respective gradient detected by said gradient detection device.

12. The device according to claim 8, wherein said definition device has a terrain type detection device, and the current operating mode corresponds to a respective terrain type detected by said terrain type detection device.

13. The device according to claim 8, wherein said definition device has a velocity detection device, and the operating mode corresponds to a respective velocity which can be detected by the velocity detection device.

14. The device according to claim 8,

wherein said definition device defines a multiplicity of possible set point charge states on a basis of the current operating mode of the vehicle;

and

further comprising a prioritization device for prioritizing one of the defined set point charge states in accordance with a predefined prioritization scheme.