Brushless electric motor system comprising a rotor, a stator and power electronic means
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United States of America Patent
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May 18, 2021
Grant Date -
Oct 1, 2020
app pub date -
Jun 4, 2020
filing date -
Jun 23, 2016
priority date (Note) -
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Abstract
A brushless electric motor system having integrated power stages, said electric motor system comprising a rotor, a stator, a plurality of power stages, and a cooling system comprising a substantially flat hollow main cool body arranged to support the flowing of a cooling medium inside said hollow main cool body for cooling said main cool body, a base cooling plate connected to a first flat surface of said hollow main cool body and to said plurality of power stages for transferring heat between said plurality of power stages and said base cool plate, heat resistance inserts connected to said base cooling plate and said plurality of electrically excitable coils for transferring heat between said plurality of coils and said base cooling plate wherein said heat resistance inserts provide for a thermal conductivity, thereby creating a thermal buffer such that said electrically excitable coils are cooled less compared to said power stages, by said cooling system.
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