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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

In addition, a fluid-guiding element can be provided that is formed as a protrusion pointing centrally from the collar into the cooling channel portion. This optimises the cooling fluid flow between the radially outer permanent magnets.

The cooling channel portions particularly preferably continue from the first radial position in a straight line to the through-opening. A fluidically advantageous cross-section of the cooling channel portions between the through-opening and the first radial position can thus be specified.

In addition, the invention relates to an electric machine comprising a stator and a rotor assembly according to the invention arranged within the stator.

The invention additionally relates to a vehicle comprising an electric machine according to the invention which is designed to drive the vehicle.

All details regarding the rotor assembly according to the invention can be transferred analogously to the electric machine according to the invention and the vehicle according to the invention, such that the above-mentioned advantages can be attained with these as well.

Further advantages and details of the invention will become clear from the exemplary embodiments described hereinafter and also with reference to the drawings. These are schematic depictions and show:

FIG. 1 a sectional view of a first exemplary embodiment of the rotor assembly according to the invention;

FIG. 2 a perspective view of a rotor core with permanent magnets of the rotor assembly shown in FIG. 1 received in said rotor core;

權(quán)利要求

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