Rotor of rotary electric machine
一种旋转电机、转子的技术，应用在旋转电机的转子领域，能够解决无法均等地冷却转子、旋转电机运行效率恶化等问题，达到抑制动能的损失、抑制运行效率的下降、抑制运行效率的恶化的效果
Active Publication Date: 2019-12-20
HONDA MOTOR CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0008] However, in the rotating electrical machine described in Patent Document 1, part of the power of the rotating electrical machine is used as kinetic energy supplied to the rotor and as kinetic energy supplied to the cooling medium inside the rotor core, so the operation of the rotating electrical machine Efficiency deterioration
[0009] In addition, in the rotating electric machine described in Patent Document 2, small cooling medium passages with a circular cross section are formed at predetermined intervals along the circumferential direction of the rotor core, so only the vicinity of the cooling medium passages can be cooled, and Does not cool the rotor equally
Method used
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Embodiment Construction
[0074] Hereinafter, an embodiment of a rotor for a rotating electrical machine according to the present invention will be described with reference to the drawings.
[0075] Such as figure 1and figure 2 As shown, the rotor 10 of the rotating electrical machine of this embodiment includes a tubular rotor shaft 20, a rotor core 30 supported by the rotor shaft 20, and a pair of end plate 40 .
[0076] The rotor shaft 20 is configured to rotate integrally with the rotor core 30, and includes: a coolant flow path 21 through which the coolant M flows; and a coolant supply unit 23 provided on one axial side of the coolant flow path 21 ( figure 2 the left side of the middle), and the cooling medium M (low temperature cooling medium Mc) is supplied from the rotor shaft 20 to the rotor core 30; the cooling medium discharge part 24 is provided on the other side of the cooling medium flow path 21 figure 2 right side in the middle), and return the cooling medium M (high temperature co...
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The invention provides a rotor of a rotary electric machine capable of suppressing reduction of operation efficiency and appropriately cooling down. The rotor of the rotary electric machine includes arotor core, magnets, and a rotor shaft. The rotor shaft includes a refrigerant passage, a refrigerant supply part provided on one side of the refrigerant passage and configured to supply the refrigerant from the rotor shaft to the rotor core, a refrigerant discharge part provided on the other side of the refrigerant passage and configured to return the refrigerant from the rotor core to the rotorshaft, and a passage partition part configured to block flow of the refrigerant between the one side and the other side of the refrigerant passage. The rotor core includes a plurality of heat exchange chambers having a circumferential length larger than a radial length, and the heat exchange chamber communicates with the refrigerant supply part on one side of the refrigerant passage in an axial direction and communicates with the refrigerant discharge part on the other side.
Description
technical field [0001] The present invention relates to a rotor of a rotating electrical machine mounted on an electric vehicle or the like. Background technique [0002] In recent years, in hybrid vehicles and EV vehicles using a rotating electric machine as a driving source, temperature rise of permanent magnets that greatly affects the performance of the rotating electric machine has become a problem, and efficient cooling has become a problem. [0003] In the rotating electric machine described in Patent Document 1, it is described that the cooling medium supplied from the rotor shaft to the inside of the rotor core is discharged from the end surface on the outer peripheral side of the rotor core by centrifugal force to cool the rotor. [0004] In addition, in the rotating electrical machine described in Patent Document 2, it is described that the cooling medium that flows into the rotor shaft from the end portion on the one end side of the rotor shaft is supplied to the...
Claims
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IPC IPC(8): H02K1/32H02K9/19
CPCH02K1/32H02K9/19H02K1/2766H02K1/276
Inventor 和久井茂晴
Owner HONDA MOTOR CO LTD