Rotor einer Elektrischen Maschine, insbesondere für einen Synchronmotor zum Antrieb von Kraftfahrzeugen

Details

Veröffentlichungs-Nr.

EP4742504

Anmeldetag

11. November 2025

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

(LEDIEU CÉDRIC et al.)

Abstract

An electric machine rotor (1), in particular for an electric motor for traction of motor vehicles, has two shaft portions (4,5) opposite one another and supported by respective bearings; one of said shaft portions (4) defines an inlet (7) and an outlet (8) for a heat exchange liquid, for cooling an annular wall (10) supporting a plurality of permanent magnets (13), and radially delimits an inner cavity (23) engaged by a core (24); the latter has an axial hole (45) communicating with the inlet (7) to supply a plurality of heat exchange channels (28) through delivery junction channels (44), which are separate from one another and are configured so as to divert the liquid into a radial direction; the liquid is then diverted into an axial direction towards the outlet (8) by return junction channels (38), which are also separate from one another; the delivery junction channels (44) and/or the return junction channels (38) are defined by two surfaces (43,42; 35,36), which axially face one another and define part of the core (24) and of a body distinct from the core (24), respectively.

Anmelder

Firma

FERRARI S.p.A.

Land

🇮🇹 Italien