Electric machine for vehicle
First Claim
Patent Images
1. A vehicle electric machine comprising:
- a stator including an end face, a yoke region defining a fluid channel, and slots located radially inboard of the fluid channel;
windings extending through the slots and including end windings adjacent the end face; and
an annular cover including inner and outer walls defining an annular cavity that receives the end windings, wherein the fluid channel opens into the cavity and wherein a largest radial distance between the inner and outer walls is less than or equal to a radial length of the end face.
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Abstract
A vehicle electric machine includes a stator having an end face and a yoke region defining a channel. End windings are adjacent to the end face. An annular cover has inner and outer walls defining an annular cavity configured to receive the end windings. The channel opens into the cavity, and a radial distance between the inner and outer walls is less than or equal to a radial length of the end face.
49 Citations
20 Claims
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1. A vehicle electric machine comprising:
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a stator including an end face, a yoke region defining a fluid channel, and slots located radially inboard of the fluid channel; windings extending through the slots and including end windings adjacent the end face; and an annular cover including inner and outer walls defining an annular cavity that receives the end windings, wherein the fluid channel opens into the cavity and wherein a largest radial distance between the inner and outer walls is less than or equal to a radial length of the end face. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle electric machine comprising:
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a stator core including an inner surface defining slots, an outer surface, opposing first and second end faces, and a yoke region defining a channel extending between the first and second end faces and including a first port defined by the first end face and a second port defined by the second end face; windings configured to extend through the slots and including end windings adjacent the end faces; a rotor disposed within a cavity defined by the inner surface; and first and second annular covers each including an outer circumferential wall and an inner circumferential wall cooperating to define an annular cooling cavity configured to receive one of the end windings, wherein a radial distance between the inner and outer walls is less than or equal to a radial distance between the inner and outer surfaces, and wherein the first port opens into the cavity of the first cover and the second port opens into the cavity of the second cover to fluidly connect the annular cooling cavities. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A vehicle electric machine comprising:
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a stator including inner and outer surfaces and an end face extending therebetween, and windings extending through slots; and an annular cover including inner and outer circumferential walls and first and second radial walls connected between the circumferential walls to define a cavity configured to receive a portion of the windings, wherein the second wall is disposed against the end face and defines stator slots that receive the windings. - View Dependent Claims (16, 17, 18)
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19. A drivetrain comprising:
an electric machine disposed within a transmission housing and including a stator including an end face, a yoke region defining a fluid channel, and slots located radially inboard of the fluid channel, and an annular cover including inner and outer walls defining an annular cavity that receives the end windings, wherein the fluid channel opens into the cavity and wherein a largest radial distance between the inner and outer walls is less than or equal to a radial length of the end face. - View Dependent Claims (20)
Specification