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公开(公告)号：EP4123882A3
公开(公告)日：2023-06-07
申请号：EP22180804.1
申请日：2022-06-23
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam , LANDGRAF, Johannes
IPC分类号： H02K1/2783 , H02K1/30 , H02K1/32 , H02K1/2753 , H02K1/278 , H02K9/22 , H02K11/215
摘要： A rotor for an electric machine is disclosed herein. The rotor comprises: a central shaft; a rotor drum arranged radially outward of the central shaft, wherein the rotor drum comprises a hollow cylinder for carrying permanent magnets on an inner and/or outer surface of the hollow cylinder, and wherein the rotor drum is coaxial with both the central shaft and a rotational axis of the rotor; and a cap arranged to couple the central shaft to the rotor drum to enable the rotor drum and central shaft to rotate together about the rotational axis. An inner portion of the cap is coupled to the central shaft at a first position along the length of the rotational axis, and an outer portion of the cap is coupled to the rotor drum at a second position along the length of the rotational axis. The first position is at a different length along the rotational axis to the second position.
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公开(公告)号：EP4123882A2
公开(公告)日：2023-01-25
申请号：EP22180804.1
申请日：2022-06-23
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam , LANDGRAF, Johannes
IPC分类号： H02K1/2783 , H02K1/30 , H02K1/32 , H02K1/2753 , H02K1/278 , H02K9/22 , H02K11/215
摘要： A rotor for an electric machine is disclosed herein. The rotor comprises: a central shaft; a rotor drum arranged radially outward of the central shaft, wherein the rotor drum comprises a hollow cylinder for carrying permanent magnets on an inner and/or outer surface of the hollow cylinder, and wherein the rotor drum is coaxial with both the central shaft and a rotational axis of the rotor; and a cap arranged to couple the central shaft to the rotor drum to enable the rotor drum and central shaft to rotate together about the rotational axis. An inner portion of the cap is coupled to the central shaft at a first position along the length of the rotational axis, and an outer portion of the cap is coupled to the rotor drum at a second position along the length of the rotational axis. The first position is at a different length along the rotational axis to the second position.
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公开(公告)号：EP4187563A3
公开(公告)日：2023-09-13
申请号：EP22207912.1
申请日：2022-11-16
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam , WOOD, Robert , BURKE, Sean
IPC分类号： H01F27/28
摘要： The present invention relates to the inductors, for example, flat ribbon inductors and methods of forming thereof. An aspect of the disclosure provides an inductor comprising: a helical conductor a core having a core magnetic reluctance, the core comprising: a first core portion; a second core portion; and, a gap disposed between the first core portion and the second core portion and enclosed by the helical conductor, wherein the gap is configured to provide a gap magnetic reluctance wherein the gap magnetic reluctance is greater than the core magnetic reluctance; wherein the helical conductor has: a first region of the conductor which encloses part of the core, wherein the first region comprises a first pitch; and, a second region of the conductor which encloses the gap wherein the second region comprises a second pitch, wherein the second pitch is greater than the first pitch; wherein, in use, the second region of the conductor is configured to reduce a magnitude of interaction between the second region of the conductor and an electromagnetic field generated around the gap.
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公开(公告)号：EP3992997A1
公开(公告)日：2022-05-04
申请号：EP20204340.2
申请日：2020-10-28
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam
摘要： The present invention relates to an inductor coil, comprising:
- a first component (12);
- a second component (14);
- a length of conductor (18);
- a heat sink (100);
wherein, the first component is located adjacent to the second component;
wherein, a core (16) is formed from the first component and the second component;
wherein, a first part of the length of conductor is wound around at least the core to form a plurality of turns of conductor;
wherein, the heat sink comprises a thermally conductive material;
wherein, the heat sink comprises a first part (90, 110) and a second part;
wherein, first part of the heat sink has a first material and/or structural characteristic and the second part of the heat sink has a second material and/or structural characteristic different to the first material and/or structural characteristic; and
wherein, an inner surface of the first part of the heat sink is in contact with an outer surface of a part of the plurality of turns of conductor.-
公开(公告)号：EP3992996A1
公开(公告)日：2022-05-04
申请号：EP20204342.8
申请日：2020-10-28
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam
IPC分类号： H01F3/14 , H01F27/28 , H01F27/34 , H01F41/071 , H01F27/30
摘要： The present invention relates to an inductor coil, comprising:
a first component (12);
a second component (14); and
a length of conductor (18);
wherein, the first component is located adjacent to the second component;
wherein, a core (16) is formed from the first component and the second component;
wherein the core is located along a first portion of a central axis and a second portion of the central axis;
wherein, along a third portion of the central axis the first component is spaced from the second component to form a gap (20, 30) in the core, wherein the third portion of the central axis is between the first portion of the central axis and the second portion of the central axis;
wherein, a first part of the length of conductor is located around the first portion of the central axis, located around the second portion of the central axis, and located around the third portion of the central axis to form a plurality of turns of conductor around the core and the gap in the core; and
wherein, at least one section of the first part of the length of conductor is compressed in the direction of the central axis.-
公开(公告)号：EP4187563A2
公开(公告)日：2023-05-31
申请号：EP22207912.1
申请日：2022-11-16
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam , WOOD, Robert , BURKE, Sean
IPC分类号： H01F27/28
摘要： The present invention relates to the inductors, for example, flat ribbon inductors and methods of forming thereof. An aspect of the disclosure provides an inductor comprising: a helical conductor a core having a core magnetic reluctance, the core comprising: a first core portion; a second core portion; and, a gap disposed between the first core portion and the second core portion and enclosed by the helical conductor, wherein the gap is configured to provide a gap magnetic reluctance wherein the gap magnetic reluctance is greater than the core magnetic reluctance; wherein the helical conductor has: a first region of the conductor which encloses part of the core, wherein the first region comprises a first pitch; and, a second region of the conductor which encloses the gap wherein the second region comprises a second pitch, wherein the second pitch is greater than the first pitch; wherein, in use, the second region of the conductor is configured to reduce a magnitude of interaction between the second region of the conductor and an electromagnetic field generated around the gap.
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公开(公告)号：EP4187761A1
公开(公告)日：2023-05-31
申请号：EP22209117.5
申请日：2022-11-23
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam , MORGAN, David
摘要： Disclosed herein is a heatsink for removing heat from a heat source. The heatsink comprises a surface for placing adjacent to the heat source comprising a plurality of cavities formed into the surface, the plurality of cavities open on a side of the surface away from the side of the surface for placing adjacent to the heat source, and a plurality of projections, each projection extending from the surface adjacent to a corresponding cavity. Each cavity comprises a throat region configured to restrict the flow of air between each respective cavity and the region between a corresponding pair of projections extending from the surface adjacent to the cavity.
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公开(公告)号：EP4117148A1
公开(公告)日：2023-01-11
申请号：EP22180814.0
申请日：2022-06-23
申请人： ETA Green Power Ltd.
发明人： BOWMAN, Liam , COLLINGS, Henry
摘要： A stator for interacting with magnets carried by a rotor of an electric machine, the stator comprising: an active region arranged to be aligned with the magnets carried by the rotor; a first inactive region and a second inactive region, wherein the first and second inactive regions are separated by the active region; and a slotless phase winding comprising a plurality of conductive elements, wherein each conductive element comprises a conductor provided in an insulating housing, and wherein the slotless phase winding is arranged in a serpentine structure comprising: a first active segment in which the conductive elements extend across the active region from the first inactive region to the second inactive region; a second active segment in which the conductive elements extend across the active region from the second inactive region to the first inactive region; and an inactive segment coupling the first active segment to the second active segment, wherein the inactive segment comprises a turn provided in the second inactive region, and wherein at least one of the conductive elements is twisted in the second inactive region.
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