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Rotating electrical machine

專利號
US11177721B2
公開日期
2021-11-16
申請人
HONDA MOTOR CO., LTD.（JP Tokyo）
發(fā)明人
Tadashi Yamaguchi; Takuro Kamada; Masahiko Mizuguchi; Kojiro Ohsaki
IPC分類
H02K1/32; H02K9/00; H02K1/22
技術(shù)領(lǐng)域
hole,rotor,path,flow,discharge,second,first,end,core,plate
地域： Tokyo

摘要

A rotating electrical machine includes a rotor and a stator. A first end plate includes a first refrigerant discharge hole which communicates with a second refrigerant flow path hole and supplies refrigerant to a first coil end and a first groove portion which supplies the refrigerant supplied from a refrigerant flow path to a first refrigerant flow path hole and does not supply the refrigerant to the first refrigerant discharge hole and the second refrigerant flow path hole. A second end plate includes a second refrigerant discharge hole which supplies the refrigerant to a second coil end and a second groove portion which supplies the refrigerant supplied from the first refrigerant flow path hole to the second refrigerant flow path hole and supplies the refrigerant to the second refrigerant discharge hole.

說明書

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Due to the centrifugal force acting on the refrigerant, the refrigerant in the refrigerant flow path 12 passes through the refrigerant introduction groove 43 and the first groove portion 44a of the first end plate 40a as indicated by the arrow T0 in FIGS. 2 and 4 and is supplied to the first refrigerant flow path hole 25 of the rotor core 20. Then, the refrigerant flows through the first refrigerant flow path hole 25 as indicated by the arrow T1 in FIG. 4 to cool the rotor core 20 from the inside. Since the first refrigerant flow path hole 25 is disposed in the vicinity of the magnetic pole portion 30, the magnet 31 having the largest heat generation amount can be effectively cooled.

權(quán)利要求

1
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