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公开(公告)号：US11884409B2
公开(公告)日：2024-01-30
申请号：US17515934
申请日：2021-11-01
摘要： Aircraft electric motors include a motor unit having a rotor and a stator. The stator includes a plurality of windings and cooling channels arranged to provide cooling thereto. A drive unit is configured to drive operation of the motor unit. A cooling system includes a working fluid arranged within a cooling fluid flow path, wherein the cooling fluid flow path includes a liquid cooling path configured to direct flow of the working fluid through, at least, the cooling channels of the motor unit and a vapor cooling path configured to direct flow of the working fluid through the drive unit and a separator arranged upstream of each of the liquid cooling path and the vapor cooling path and configured to direct a liquid portion of the working fluid into the liquid cooling path and configured to direct a vapor portion of the working fluid into the vapor cooling path.
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公开(公告)号：US12063763B2
公开(公告)日：2024-08-13
申请号：US17474802
申请日：2021-09-14
IPC分类号： H05K7/20 , H01L23/427 , H01L23/473
CPC分类号： H05K7/20936 , H05K7/209 , H01L23/427 , H01L23/473 , H05K7/20254 , H05K7/20336 , H05K7/20927
摘要： A system for cooling a power component includes a first metal layer. A cooling layer having a first surface is in contact with a surface of the first metal layer. A second metal layer is included having a surface in contact with a second surface of the cooling layer opposite the first metal layer. The cooling layer is of a material different from that of the first metal layer and that of the second metal layer. A plurality of cooling features are embedded in the material of the cooling layer. The cooling channels are spaced apart from both the first metal layer and the second metal layer by the material of the cooling layer. An electrically conductive path connects the first metal plate to the second metal plate.
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公开(公告)号：US11990825B2
公开(公告)日：2024-05-21
申请号：US17522118
申请日：2021-11-09
摘要： Aircraft electric motors are described. The aircraft electric motors includes a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system. The cooling system includes at least one cooling channel integrally formed within at least one winding, wherein the at least one cooling channel comprises an inlet to receive a two-phase cooling fluid and an outlet configured to discharge the two-phase cooling fluid, wherein a cross-sectional area of the at least one cooling channel at the inlet is less than a cross-sectional area of the at least one cooling channel at the outlet.
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公开(公告)号：US11876405B2
公开(公告)日：2024-01-16
申请号：US16742688
申请日：2020-01-14
摘要： A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.
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公开(公告)号：US20240048030A1
公开(公告)日：2024-02-08
申请号：US18264469
申请日：2021-02-09
摘要： Electric motors and stators thereof are described. The stators of the electric motors include a first header, a second header fluidly connected to the first header, a plurality of windings fluidly connected to the first header and the second header to receive a cooling fluid passing from the first header to the second header along one or more flow channels, and one or more phase-change material elements arranged to thermally interact with at least one of the first header, the second header, the one or more flow channels, and the plurality of windings.
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6.发明授权公开(公告)号：US11804754B2
公开(公告)日：2023-10-31
申请号：US17126605
申请日：2020-12-18
摘要： An electric motor system includes an electric motor, and a thermal management system. The thermal management system includes a two-phase refrigerant circuit circulating a flow of refrigerant through the electric motor, and a refrigerant-air heat exchanger fluidly connected to the electric motor via the two-phase refrigerant circuit, such that the flow of refrigerant is boiled via heat generated by the electric motor, and returned to a subcooled liquid state to cool the electric motor. A method of dissipating thermal energy from an electric motor includes urging a flow of refrigerant through an electric motor, thereby boiling the flow of refrigerant, directing the flow of refrigerant from the electric motor to a refrigerant-air heat exchanger via a two-phase refrigerant circuit, and cooling the refrigerant to a sub-cooled liquid state at the refrigerant-air heat exchanger via thermal energy exchange with a flow of air through the refrigerant-air heat exchanger.
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公开(公告)号：US11705782B2
公开(公告)日：2023-07-18
申请号：US17482737
申请日：2021-09-23
摘要： A stator and a motor including a stator. The stator includes a stator hub, a plurality of stator teeth extending from the stator hub that define a stator slot having a stator slot base, at least one winding disposed in the stator slot, and one or more oscillating heat pipes disposed at least partially in the at least one winding. The at least one winding is held apart from the stator slot base so that a cooling channel is defined between an inner winding portion of the at least one winding and a portion of the one or more oscillating heat pipes is disposed in the channel so cooling fluid can be passed between the stator slot base and the inner winding portion to cool the inner winding portion via at least operation of the one or more oscillating heat pipes.
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公开(公告)号：US20230141526A1
公开(公告)日：2023-05-11
申请号：US17519749
申请日：2021-11-05
摘要： Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system having at least one directional feature forming a portion of at least one cooling channel, the at least one directional feature configured to prevent backflow of a cooling fluid that passes through the at least one cooling channel.
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公开(公告)号：US20240348119A1
公开(公告)日：2024-10-17
申请号：US18133038
申请日：2023-04-11
CPC分类号： H02K3/32 , H02K1/12 , H02K15/105
摘要： A stator for an electrical machine can include a plurality of windings, each forming a coil and end connections. The stator can include a first potting material having a first viscosity and a first thermal conductivity. The first potting material can be disposed on each coil and fills gaps between each coil. The stator can include a second potting material different from the first potting material and having a second viscosity and a second thermal conductivity. The second viscosity can be higher than the first viscosity and the second thermal conductivity is higher than the first thermal conductivity. The second potting material can be disposed on each of the end connections to provide increased thermal conductivity from the end connections.
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公开(公告)号：US20230143600A1
公开(公告)日：2023-05-11
申请号：US17519766
申请日：2021-11-05
摘要： Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system. The cooling system includes an oscillating heat pipe containing a first working fluid, wherein the oscillating heat pipe is arranged to pick up heat from at least one winding, the oscillating heat pipe having an evaporator section arranged in thermal contact with the at least one winding and a condenser section arranged away from the evaporator section and a heat pickup portion arranged to receive a second working fluid to remove heat from the condenser section of the oscillating heat pipe.
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