公开(公告)号：US20210039491A1

公开(公告)日：2021-02-11

申请号：US16967801

申请日：2019-05-15

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Felix MERZ ,  Yann TREMAUDANT

IPC分类号： B60K11/02 ,  F16H57/04 ,  H02K1/32 ,  H02K7/116 ,  H02K9/19 ,  H02P29/62

摘要： An electric drive unit for a motor vehicle includes an electrical machine having a stator and a rotor. An inverter having a first switch unit energizes a first phase system (U, V, W) of the stator. A transmission is connected to the rotor for torque transmission. A lubricant circuit lubricates the transmission and/or cools the rotor. A first cooling circuit cools the first switch unit. A lubricant-coolant heat exchanger thermally couples the first coolant circuit and the lubricant circuit. A control device provides a dissipation-increasing operating mode for the first switch unit in order to increase a dissipation heating a coolant of the first coolant circuit. The lubricant-coolant heat exchanger transfers heat from the heated coolant to the lubricant circuit in order to reduce a viscosity of a lubricant.

公开(公告)号：US20240204604A1

公开(公告)日：2024-06-20

申请号：US18286146

申请日：2022-05-17

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Silko FEUSTEL ,  Jerome RAGOT ,  Yann TREMAUDANT

IPC分类号： H02K3/52 ,  H02K1/24

CPC分类号： H02K3/527 ,  H02K1/24

摘要： A rotor includes a magnetic field-generating component for producing a rotor magnetic field and a rotor core for holding the component. The rotor core has an annular rotor yoke and at least two rotor poles which are arranged on the rotor yoke and are configured in multiple parts, and each of which has a rotor tooth integrally formed on the rotor yoke and a pole shoe that is separate from the rotor tooth for arranging the component on the corresponding rotor tooth. The pole shoes are pressed radially against the respective rotor tooth, and the rotor has auxiliary joining parts, each of which is configured to fix at least one pole shoe to the corresponding rotor tooth by a force-fitting connection and which are at least partly arranged in respective pole gaps between two rotor poles and are secured to the rotor yoke by at least one connection element.

公开(公告)号：US20220131441A1

公开(公告)日：2022-04-28

申请号：US17428845

申请日：2020-03-16

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Daniel LOOS ,  Yann TREMAUDANT

IPC分类号： H02K7/00 ,  H02K9/28 ,  H02K13/00

摘要： A rotor shaft of an electric motor, in particular of an electrically excited synchronous machine, is composed of a shaft body and a power transmission module, the shaft body having a tubular open end that faces the power transmission module and forms a seat in which an end of the power transmission module located closer to the shaft body is interlockingly accommodated in the seat.

公开(公告)号：US20210006105A1

公开(公告)日：2021-01-07

申请号：US16966133

申请日：2019-07-15

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Silko FEUSTEL ,  Bernhard HUEBNER ,  Daniel LOOS ,  Joerg MERWERTH ,  Yann TREMAUDANT ,  Klaus VOLLMER

IPC分类号： H02K1/24 ,  H02K3/487 ,  H02K15/02 ,  B60K1/00

摘要： A rotor for a separately excited inner rotor synchronous machine of an electrically drivable motor vehicle, having a plurality of rotor windings for forming a rotor magnetic field and a rotor core for holding the rotor windings, wherein the rotor core has an annular rotor yoke with a number of rotor poles corresponding to a number of rotor windings. The poles are arranged along a rotor circumference on the rotor yoke and the rotor windings are arranged on the poles, wherein the rotor poles are formed of multiple parts and each has a rotor tooth and at least one pole shoe element separate therefrom. The rotor teeth are formed as a single piece with the rotor yoke, and the pole shoe elements are mechanically connectable to the rotor teeth after arranging the rotor windings on the rotor teeth. Also provided are the synchronous machine, a motor vehicle and a method.