Cooling system for electric motor of vehicle
First Claim
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1. A cooling system for an electric motor of a vehicle, comprising:
- an electric motor which drives the vehicle;
a reduction gear which adjusts a driving force of an output shaft of the electric motor and transmits the driving force to a drive shaft; and
an in-shaft refrigerant passage provided in a shaft of the reduction gear and the output shaft of the electric motor, wherein a refrigerant which has passed through the in-shaft refrigerant passage is collected outside a motor case housing the electric motor, and is circulated.
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Abstract
A cooling system for an electric motor of a vehicle comprises an electric motor which drives the vehicle, a reduction gear which adjusts a driving force of an output shaft of the electric motor and transmits the driving force to a drive shaft, and an in-shaft refrigerant passage provided in a shaft of the reduction gear and the output shaft of the electric motor. In the cooling system, a refrigerant which has passed through the in-shaft refrigerant passage is collected outside a motor case housing the electric motor, and is circulated.
38 Citations
13 Claims
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1. A cooling system for an electric motor of a vehicle, comprising:
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an electric motor which drives the vehicle;
a reduction gear which adjusts a driving force of an output shaft of the electric motor and transmits the driving force to a drive shaft; and
an in-shaft refrigerant passage provided in a shaft of the reduction gear and the output shaft of the electric motor, wherein a refrigerant which has passed through the in-shaft refrigerant passage is collected outside a motor case housing the electric motor, and is circulated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification