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US 10,766,346 B2Granted
Liquid-cooled electric drive system
AssigneeAudi AG
InventorsMartin Hüttl, Stefan Till
Life of this patent
Estimating the term…
Abstract
A liquid-cooled electric drive system for a motor vehicle and a method of operating the drive system.
Claims13
A liquid-cooled electric drive system for a motor vehicle, comprising:
- at least two drive units, each drive unit having components including an electric machine and associated power electronics which are connected to a coolant circuit of the motor vehicle, and
- a drive control unit which is set up to distribute the drive power produced by the drive system between the drive units depending on the temperature of the components of the drive units, wherein the drive control unit is adapted to reduce the drive power provided to the drive unit whose components have the higher temperature and to increase the drive power provided to the drive unit whose components have the lower temperature.
A method for operating a liquid-cooled electric drive system for a motor vehicle, comprising:
- at least two drive units each having components including an electric machine and power electronics assigned to it, wherein the drive power produced by the drive system is divided between the drive units depending on the temperature of the components of the drive units, wherein the drive power provided to the drive unit whose components have the higher temperature is reduced, and the drive power provided to the drive unit whose components have the lower temperature is increased.
Dependencies are inferred from the claim text.