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rotating electrical machine

A technology of rotating electrical machines and rotors, applied in the field of rotating electrical machines

Active Publication Date: 2022-04-22
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the rotor of the rotating electric machine described in Patent Document 1, there is no description of a method for cooling the coils of the stator.

Method used

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Embodiment Construction

[0059] Hereinafter, rotating electric machines according to embodiments of the present invention will be described with reference to the drawings.

[0060] Such as figure 1 As shown, the rotating electrical machine 50 is a so-called inner rotor type rotating electrical machine, and includes: a rotor 51; and a stator 52 arranged to face the outer diameter side of the rotor 51 with a slight gap therebetween.

[0061]

[0062] [rotor]

[0063] Such as Figure 2 to Figure 5 As shown, the rotor 51 of the first embodiment includes: a rotor shaft 10; a rotor core 20 pivotally supported by the rotor shaft 10; a plurality of magnetic pole portions 30; and a first end plate 40a disposed at one axial end of the rotor core 20 side; and a second end plate 40b disposed on the other axial end side of the rotor core 20 .

[0064] A refrigerant flow path 11 through which the refrigerant flows is formed on the rotor shaft 10 . The refrigerant passage 11 is configured to axially extend ins...

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PUM

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Abstract

The present invention provides a rotating electrical machine capable of cooling a magnetic pole portion of a rotor from inside a rotor core and cooling a coil of a stator with refrigerant discharged from the rotor core. A rotating electrical machine (50) includes a rotor (51) and a stator (52). The rotor includes a rotor shaft (10), a rotor core (20), a plurality of magnetic pole portions (30), a first end plate (40a), and a second end plate (40b). The first end plate has: a refrigerant discharge hole (42); a first groove portion (44), which communicates with the refrigerant flow path (11) and communicates with the first refrigerant flow path hole (25); and a second The groove (45) communicates with the first groove and communicates with the refrigerant discharge hole of the first end plate. The second end plate has: a refrigerant discharge hole; and a third groove portion (46), which communicates with the first refrigerant flow hole and communicates with the refrigerant discharge hole of the second end plate.

Description

technical field [0001] The invention relates to a rotating electric machine. Background technique [0002] With the recent increase in the size of rotating electrical machines, performance degradation of the rotating electrical machine due to heat generation at the magnetic poles cannot be ignored, and methods for effectively cooling the magnetic poles are being sought. Patent Document 1 describes that, in a rotor of a rotating electric machine including a rotor core and a pair of end plates arranged on both end faces of the rotor core, refrigerant supplied from the rotor shaft is transferred from one end plate to The annular groove formed on the top is introduced into the inside of the rotor core, and is discharged from the other end plate through the through-hole formed inside the rotor core. Accordingly, the rotor core can be cooled from the inside. [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open No. 2018-33265 [0005] On the other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/32H02K3/50
CPCH02K1/32H02K3/50H02K1/2766H02K1/30H02K1/276
Inventor 大图达也山口直志
Owner HONDA MOTOR CO LTD