Integrated electric drive unit including an electric motor and an electronic control and monitoring module

US6198183A · kind A · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Hermann Baeumel · Dresden, DE
• Hermann Kilian · Diespeck, DE
• Bernhard Schuch · Rothenburg ob der Tauber, DE
• Otmar Bitsche · Graz, AT

Key dates

• Filing date: Apr 19, 1999
• Grant date: Mar 6, 2001
• Expiry date: Apr 19, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2211/03
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electric drive unit includes an electronic control and monitoring module integrally connected to an electric motor. The housing of the electric motor has a double-walled construction to form a water jacket with cooling water passages therein. The electronic module includes at least one high power component that requires cooling. This component is mounted directly on a cooling insert that extends through a recess in the electronic module housing and is inserted in an opening provided in the outer wall of the motor housing. In this manner, the cooling insert is integrated into the water jacket of the motor housing and is directly cooled by the cooling water flowing in the cooling passages. A very compact and reliable construction is achieved, in which the electric motor and the electronic module share a common water cooling circuit. External water hoses and external electrical connections between the electric motor and the electronic module are avoided.