Liquid-cooled drive unit for an electric motor vehicle
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United States of America Patent
Stats
-
Dec 17, 1996
Grant Date -
N/A
app pub date -
May 27, 1994
filing date -
May 28, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drive unit for an electric motor car comprises an electric motor attached to a transmission unit, a housing for the electric motor, a control housing within which are electronic controls for the electric motor, and a cooling circuit having a cooling liquid flowing therethrough. The control housing has a bottom which is located on top of the motor housing. The cooling circuit has a first portion which cools the bottom of the control housing, and a second portion which cools the motor housing. The first and second portions of the cooling circuit are connected in series so that the cooling liquid can first cool the bottom of the control housing and then the motor housing.
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