Thermal management system and related methods for vehicle having electric traction motor and range extending device
Inactive Publication Date: 2013-10-17
MAGNA E CAR SYST OF AMERICA
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Benefits of technology
This patent is about a system for managing the temperature of a vehicle's components, such as the passenger cabin and battery pack. The system includes fluid circuits and heat exchangers to control the temperature of these components using heat generated by an electric traction motor and a range extending device, such as an internal combustion engine or fuel cell. The system can also transfer heat between the passenger cabin and the range extending device using the liquid-to-liquid heat exchanger. The technical effect of this patent is to improve the efficiency and comfort of vehicles by utilizing heat generated by both the electric traction motor and range extending device to manage the temperature of the passenger cabin and battery pack.
Problems solved by technology
While currently proposed and existing hybrid vehicles are advantageous in some respects over vehicles powered solely by internal combustion engines, there are problems that are associated with some hybrid vehicles.
Method used
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[0015]Reference is made to FIG. 1, which shows a vehicle 12. The vehicle 12 includes wheels 13, an electric traction motor 14 for driving the wheels 13, first and second battery packs 16a and 16b, a passenger cabin 18, a high voltage electrical system 20 (FIG. 2), a low voltage electrical system, and a range extending device 21 that in this example is an internal combustion engine 21.
[0016]The motor 14 may have any suitable configuration for use in powering the vehicle 12. The motor 14 may be mounted in a motor compartment that is forward of the cabin 18. The motor 14 may be connected to a gearbox (not shown) which drives the wheels 13. The motor 14 is an electrical component that generates heat during use and thus requires cooling. To this end, the motor 14 includes a motor fluid flow conduit for transporting heat exchange fluid (e.g., coolant) about the motor 14, so as to maintain the motor 14 within a suitable temperature range.
[0017]The internal combustion engine 21 may also hav...
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A vehicle, such as a parallel or series hybrid vehicle, includes both an electric traction motor and a range extending device such as, for example, an internal combustion engine, or a fuel cell. In an embodiment, a thermal management system for the vehicle includes a passenger cabin heating circuit configured to circulate heat exchange fluid through a liquid-to-liquid heat exchanger and a passenger cabin heating heat exchanger. A motor circuit can be configured to circulate heat exchange fluid through the electric traction motor, a transmission control module, and a DC / DC converter. The motor circuit can be selectably connected to the passenger cabin heating circuit by a valve. An engine circuit is configured to circulate heat exchange fluid through the internal combustion engine, a radiator, and the liquid-to-liquid heat exchanger. The liquid-to-liquid heat exchanger is configured to transfer heat between heat exchange fluid of the passenger cabin heating circuit and heat exchange fluid of the engine circuit.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to and the benefit of U.S. Provisional Application No. 61 / 623,243 filed Apr. 12, 2012. The above-noted application is incorporated in its entirety by reference.FIELD OF THE INVENTION[0002]The present disclosure relates to vehicles, and, more particularly to vehicles that include both an electric traction motor and a range extending device such as, for example, an internal combustion engine, or a fuel cell.BACKGROUND OF THE INVENTION[0003]Vehicles with electric traction motors offer the promise of powered transportation while producing little or no emissions at the vehicle. Some vehicles are powered by electric motors only and rely solely on the energy stored in an on-board battery pack. Some vehicles are hybrids, having both a traction motor and an internal combustion engine, which may, for example, be used to assist the traction motor in driving the wheels (a parallel hybrid), or which may, for example, b...
Claims
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Login to View More IPC IPC(8): F28D1/04
CPCF28D1/0408B60H1/00278B60H1/004B60H1/03B60H1/143B60H2001/00307B60L50/61Y02T10/62Y02T10/70Y02T10/7072
Inventor CARPENTER, NEILRAJAIE, RICK
Owner MAGNA E CAR SYST OF AMERICA