METHOD FOR COOLING COMPONENTS OF A MOTOR VEHICLE

• US 20100087979A1
• Filed: 05/05/2008
• Published: 04/08/2010
• Est. Priority Date: 05/15/2007
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Thulke, Mirko, Neusinger, Eva
• Application Number:
  US12/599,016
• Publication Number:
  US 20100087979A1
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 11/06 with air cooling
• CPC Class Codes: B60K 2001/003 with means for cooling the electrical propulsion units
• 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 2555/20 Ambient conditions, e.g. wind or rain
• CPC Class Codes: B60W 30/1843 Overheating of driveline components B60W30/186 takes precedence
• CPC Class Codes: F01P 2050/24 Hybrid vehicles
• CPC Class Codes: F01P 3/20 Cooling circuits not specific to a single part of engine or machine F01P3/22 takes precedence

Abstract

A method for cooling components of a motor vehicle, the instantaneous cooling capacity being ascertained from an overall cooling requirement, and the overall cooling requirement being composed of the individual cooling requirements of the components. The motor vehicle is driven using an hybrid drive, which has at least one internal combustion engine and at least one electric machine, the electric machine being controlled by a power electronics system; and an electric machine cooling requirement and a power electronics cooling requirement are taken into account, as individual cooling requirements, in the ascertainment of the overall cooling requirement.

Claims

1-10. -10. (canceled)

11. A method for cooling components of a motor vehicle driven using a hybrid drive which has at least one internal combustion engine and at least one electric machine, the electric machine being controlled by a power electronics system, the method comprising:

ascertaining an instantaneous cooling requirement from an overall cooling requirement, the overall cooling requirement being composed of individual cooling requirements of individual components; and

taking into account at least one of an electric machine cooling requirement and a power electronics cooling requirement as individual cooling requirements, in the ascertainment of the overall cooling requirement.

12. The method as recited in claim 11, wherein the power electronics system has at least one pulse-controlled inverter.

13. The method as recited in claim 11, wherein the power electronics system has at least one DCDC converter.

14. The method as recited in claim 11, wherein an operating state of the electric machine is taken into account for a determination of a cooling requirement of the electric machine.

15. The method as recited in claim 11, wherein an operating state of the power electronics is taken into account for a determination of a cooling requirement of the power electronics.

16. The method as recited in claim 11, wherein the power electronics system includes at least one pulse-controlled inverter, and an operating state of the pulse-controlled inverter is taken into account for a determination of a cooling requirement of the power electronics.

17. The method as recited in claim 11, wherein the power electronics system has at least one DCDC converter, and an operating state of the DCDC converter is taken into account for a determination of a cooling requirement of the power electronics.

18. The method as recited in claim 11, wherein at least one of characteristics values, characteristics curves and characteristics maps are used for the determination of an individual cooling requirement.

19. The method as recited in claim 11, wherein at least one of an environmental air temperature and an environmental pressure of the hybrid drive is taken into account for a determination of at least one of an individual cooling requirement and the overall cooling requirement.

20. The method as recited in claim 11, wherein a vehicle speed of the motor vehicle is taken into account for a determination of an individual cooling requirement and the overall cooling requirement.

21. The method as recited in claim 11, wherein the individual cooling requirement of at least one component of the motor vehicle that is to be cooled is specified by the component.