ELECTRIC DRIVE UNIT WITH A HEAT EXCHANGER THAT IS FORMED BY DISKS HAVING A DISK SPRING PORTION AND WHICH ARE RECEIVED INTO A BORE IN A ROTOR SHAFT OF AN ELECTRIC MOTOR

An electric drive unit that includes an electric motor having a rotor with a rotor shaft and a heat exchanger that is received in the rotor shaft. The heat exchanger has a plurality of heat exchanger plates, each of which having a hub, a rim member, and disc spring portion that interconnects the hub...

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Bibliographic Details
Main Authors ZINK, Frederick E, RONNING, Jeffrey J, PUMP, Christopher D, VALENTE, Paul J, YASHWANTH, Bangalore Lingaraj
Format Patent
LanguageEnglish
Published 16.11.2023
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:An electric drive unit that includes an electric motor having a rotor with a rotor shaft and a heat exchanger that is received in the rotor shaft. The heat exchanger has a plurality of heat exchanger plates, each of which having a hub, a rim member, and disc spring portion that interconnects the hub and the rib member. Each disk spring portion defines a plurality of coolant apertures. The heat exchanger plates are press-fit to the rotor shaft such that each disc spring portion is deflected from a pre-installation state, and each rim member is engaged to an interior surface of the rotor shaft while being spaced apart from adjacent rim members along a rotational axis of the rotor. A first coolant passage is disposed through the hubs of the plates. The coolant apertures in the heat exchanger plates cooperate to form a plurality of second coolant passages.
Bibliography:Application Number: US202318225217