Method and device for controlling a hybrid vehicle drive

• US 8,024,081 B2
• Filed: 07/30/2007
• Issued: 09/20/2011
• Est. Priority Date: 07/28/2006
• Status: Expired due to Fees

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Sauvlet, Nils, Göhring, Markus, Fleckner, Marco, Kraxner, Dieter
• Primary Examiner(s): Hellner; Mark
• Assistant Examiner(s): Algahaim; Helal A
• Application Number:
  US11/830,013
• Publication Number:
  US 20080029320A1
• Time in Patent Office: 1,513 Days
• Field of Search: 701/22, 701/101, 180/65.1, 903/907
• US Class Current: 701/22
• 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 from a current operating parameter of the vehicle or a current driving situation of the vehicle;

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

prioritizing one of the set point charge states in accordance with a predefined prioritization scheme resulting in a prioritized set point charge state; and

using a respective control parameter set of the control parameter sets, corresponding to the current operating mode of the vehicle and to the prioritized set point charge state, to control a charge mode of the high performance battery of the electric motor with the prioritized 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. A device for controlling a hybrid vehicle drive having an internal combustion engine and an electric motor, the device comprising:

a memory device storing a multiplicity of control parameter sets 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;

a definition device for defining a current operating mode of the vehicle from a current operating parameter of the vehicle or a current driving situation of the vehicle, said definition device defining a multiplicity of possible set point charge states on a basis of the current operating mode of the vehicle; and

a prioritization device for prioritizing one of the defined set point charge states in accordance with a predefined prioritization scheme resulting in a prioritized set point charge state, 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 the prioritized set point charge state.

8. The device according to claim 7, wherein said definition device has a navigation device, and the current operating mode corresponds to a respective road type detected by said navigation device.

9. The device according to claim 7, 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.

10. The device according to claim 7, 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.

11. The device according to claim 7, 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.

12. The device according to claim 7, 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.