US 2024/0195248 A1Published application

Motor

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsHironori ASAOKA, Fumiaki YAMATO, Kiichi YOKOYAMA, Hiroki KATO, Kenta TABUCHI, Hideaki MIYAZONO

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Abstract

A motor may include: a stator with a coil; and a rotor radially inside the stator, wherein the rotor includes a rotor shaft, a core supported rotatably with the shaft, and a first end plate attached to a first end of the core, the core including a magnet held in the core, a magnet slot that holds a magnet, and a coolant path extending along an axial direction of the core, the coolant path disposed between a radially-inner end surface of the magnet and the magnet slot, and the first end plate including a flange radially outside the radially-inner end surface of the magnet, the flange protruding toward the core along the axial direction of the core, and the flange being configured to form a cavity between the first end plate and the first end, wherein the cavity delivers the coolant supplied from the rotor shaft to the coolant path.

Claims12

Dependent claims

A motor comprising:

a stator with a coil;
and
a rotor radially inside the stator,
wherein the rotor comprises a rotor shaft, a rotor core supported rotatably with the rotor shaft, and a first end plate attached to a first end of the rotor core,
wherein the rotor core comprises at least one magnet held in the rotor core, at least one magnet slot that holds the at least one magnet, and at least one coolant path extending along an axial direction of the rotor core, wherein the at least one coolant path is disposed between a radially-inner end surface of the at least one magnet and the at least one magnet slot, and
wherein the first end plate comprises a flange radially outside the radially-inner end surface of the at least one magnet, the flange protruding toward the rotor core along the axial direction of the rotor core, and wherein the flange is configured to form a cavity between the first end plate and the first end, wherein the cavity delivers the coolant supplied from the rotor shaft to the at least one coolant path.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/530,434Filed 6 Dec 2023
Priority: JP 2022-1958927 Dec 2022
Published: 13 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02K 1/2766
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]: having a flux concentration effect
H02K 1/32
Rotating parts of the magnetic circuit: with channels or ducts for flow of cooling medium
H02K 1/276
The rotor consisting of magnets or groups of magnets arranged with alternating polarity: magnets embedded in the magnetic core, e.g. interior…
H02K 5/15
Casings or enclosures characterised by the shape, form or construction thereof: mounting arrangements for bearing-shields or end plates