ELECTRIC DRIVE MODULE HAVING MOTOR WITH HEAT SINK INSERT IN ROTOR SHAFT
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United States of America Patent
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Issued Date -
Feb 22, 2024
app pub date -
Nov 3, 2023
filing date -
Aug 8, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A motor drive system has a rotor assembly that is rotatable about an axis and includes a hollow shaft, a tube, and one or more fin sets. The tube is received in the shaft and defines a first passage. The fin sets are disposed about the tube and are engaged to the shaft. Each fin set defines a plurality of circumferentially spaced apart fins that are coupled to the shaft and the tube. The first passage is configured to discharge fluid communicated therethrough into a return chamber that is formed in the rotor assembly. A plurality of second passages are formed between the shaft and fins and are in fluid communication with the return chamber.
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