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Rotor assembly for an electric machine, electric machine for a vehicle, and vehicle

專利號(hào)
US11177709B2
公開日期
2021-11-16
申請(qǐng)人
VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH（DE Erlangen）
發(fā)明人
Nils Krais; Philipp S?ntgerath; Sebastian Waider
IPC分類
H02K1/32; H02K7/00; H02K1/30; H02K1/27
技術(shù)領(lǐng)域
cooling,rotor,channel,shaft,fluid,guiding,magnet,portion,in,sealing
地域： Erlangen

摘要

A rotor assembly for an electric machine, including a rotor core and a shaft, is connected to the rotor core for conjoint rotation, wherein a cooling channel arrangement is formed within the rotor assembly and includes a cooling channel, which extends within the shaft. The rotor assembly further includes a separation element which has a separation portion extending in the circumferential direction at an inner radius of the shaft, wherein the separation portion separates an interior of the shaft into a first shaft portion, in which the cooling channel extends, and into a second shaft portion, wherein the separation element includes a sealing device, which seals off the shaft portions with respect to one another.

說明書

The second cooling channel 15 is formed here in a radially inner part by through-holes 24 within the shaft 4. A through-hole 24 for each cooling channel portion 21, 22 is provided in the shaft 4. A radially outer part of the second cooling channel 15 adjoining the radially inner part is delimited by the end face 16 of the rotor core 2 and by an end plate 25 of the rotor assembly 1.

FIG. 3 is a perspective depiction of the end plate 25 with a view of an end face 26 facing the end face 16 of the rotor core 2. A collar 27 is formed radially outwardly in the circumferential direction on the end face 26. In addition, a plurality of elevations 28, 29 are formed on the end face 26 and delimit the second cooling channel 15. Each cooling channel portion 21, 22 of the second cooling channel 15 is delimited by a pair of adjacent elevations 28, 29. All cooling channel portions 21, 22 are structured identically, and therefore they are described hereinafter on the basis of the cooling channel portion 21:

權(quán)利要求

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