COOLING DEVICE FOR AN AUTOMOTIVE VEHICLE

• US 20120132394A1
• Filed: 04/09/2010
• Published: 05/31/2012
• Est. Priority Date: 04/09/2009
• Status: Active Grant

• Current Assignee: Renault Sas (Renault)
• Original Assignee: Renault Sas (Renault)
• Inventors: Oberti, Claire, Marsilia, Marco, Cregut, Samuel
• Granted Patent: US 8,919,471 B2
• Time in Patent Office: Days
• US Class Current: 165/51
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B60K 11/02 with liquid cooling
• CPC Class Codes: B60K 2001/003 with means for cooling the electrical propulsion units
• CPC Class Codes: B60K 2001/006 the electric motors
• CPC Class Codes: F01P 2050/24 Hybrid vehicles
• CPC Class Codes: F01P 7/165 characterised by systems with two or more loops
• CPC Class Codes: F01P 7/167 by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed

Abstract

A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable-flowrate pump, the flowrate of each pump being controlled by a control system. The control system is configured to control the flowrate of each pump in a closed-loop regulating system as a function of the temperature of the liquid coolant and of a setpoint temperature.

Claims

1-9. -9. (canceled)

10. A cooling device for an automotive vehicle of electric type, comprising:

a cooling circuit configured to cool an engine assembly using a coolant circulated using at least one variable flow rate pump, the flow rate of each pump being controlled by a control system,

wherein the control system is configured to servo-control the flow rate of each pump in a closed-loop regulation system according to a temperature of the coolant and a setpoint temperature.

11. The device as claimed in claim 10, wherein the setpoint temperature is predetermined according to a temperature outside the vehicle and speed of the vehicle.

12. The device as claimed in claim 10, wherein the automotive vehicle is an electric vehicle and the engine assembly includes an electronic driver system.

13. The device as claimed in claim 12, wherein the electric vehicle includes a battery charger assembly, and the cooling circuit is configured to cool the charger assembly and the engine assembly.

14. The device as claimed in claim 13, comprising a first pump configured to selectively supply coolant to the engine assembly and a second pump configured to selectively supply coolant to the charger assembly.

15. The device as claimed in claim 14, further comprising a first valve configured to prevent a flow of coolant in the charger assembly and a second valve configured to prevent a flow of coolant in the engine assembly.

16. The device as claimed in claim 15, further comprising a hydraulic restriction for maintaining a minimum flow rate of coolant in the engine assembly.

17. The device as claimed in claim 10, wherein the closed-loop regulation system includes a corrector of proportional-integral type.

18. The device as claimed in claim 17, wherein the corrector includes a saturation block configured to limit the correction between a minimum value and a maximum value.