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Method for operating a motor vehicle in a sports operating mode

An operating mode, motor vehicle technology, applied in the arrangement of multiple different prime movers of general power plants, electric vehicles, power supply of auxiliary motors, etc., and can solve problems such as power reduction

Active Publication Date: 2014-03-19
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this continuous power can be briefly exceeded, the power must be reduced again as soon as the electrical components have reached a predetermined maximum temperature

Method used

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  • Method for operating a motor vehicle in a sports operating mode

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Embodiment Construction

[0018] The motor vehicle cooling system denoted as a whole by " 10 " comprises a refrigerant circuit 12 and two coolant circuits 14 , 16 for cooling components 18 , 20 , 22 of the electric drive of the motor vehicle. In this case, the first coolant circuit 14 is only used for cooling the high-voltage battery 18 . The components 20 , 22 cooled by the second coolant circuit 16 can be, for example, power electronics, DC transformers, drive motors or transmissions. The use of two separate cooling medium circuits 14 , 16 for the high-voltage battery 18 and the other components 20 , 22 is advantageous because the optimum operating temperature of the high-voltage battery 18 differs considerably from the optimum operating temperature of the components 20 , 22 .

[0019] Each of the coolant circuits 14 , 16 has a heat exchanger 24 , 26 through which the driving air flows while the motor vehicle is in motion, and a circulation pump 28 , 30 for circulating the coolant. The cooling mediu...

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Abstract

The invention relates to a method for operating a motor vehicle having at least one electric drive component (18, 20, 22) which is cooled via at least one coolant circuit (14, 16) which is coupled thermally to a refrigerant circuit (12). In a first operating mode of the motor vehicle, an inlet temperature of a coolant of the at least one coolant circuit (14, 16) is set to a first value by active cooling by means of the refrigerant circuit (12). In a second operating mode, in particular a sports operating mode, of the motor vehicle, said inlet temperature is lowered with respect to the first operating mode. As a result, more pronounced cooling of the components (18, 20, 22) is made possible in the second operating mode, as a result of which the maximum driving power of the motor vehicle is increased.

Description

technical field [0001] The invention relates to a method for operating a motor vehicle having at least one electric drive component which is cooled by at least one cooling circuit. Background technique [0002] The power output of an electrically operated motor vehicle is primarily determined by the thermal load capacity of the electric drive components such as electric motors, electrical equipment, DC transformers, batteries, etc. For this reason, at least one cooling medium circuit is usually provided, by means of which the heat of the components can be dissipated and can be discharged into the ambient air by means of a heat exchanger. In order to ensure additional cooling, this coolant circuit is often also coupled to the refrigerant circuit of the motor vehicle. [0003] During operation of the refrigerant circuit, the cooling medium is compressed and simultaneously liquefied and then cooled by the ambient heat exchanger. The partial volume flow of the cooling medium i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60K6/42
CPCB60H2001/00307B60H1/00271B60L1/003B60L2240/34B60L2240/425B60L2240/525B60L2240/545B60L58/26Y02T10/64Y02T10/70B60K11/02
Inventor K-H·梅廷格尔F·鲍尔S·乌尔曼
Owner AUDI AG
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