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公开(公告)号：US20240055915A1
公开(公告)日：2024-02-15
申请号：US18493138
申请日：2023-10-24
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: An electric machine includes a housing having an inner surface, an upper portion, and a bottom portion. The bottom portion supports a coolant inlet, and a coolant outlet. A stator is mounted in the housing. The stator includes a plurality of stator laminations having a first end turn and a second end turn. The plurality of stator laminations includes a coolant flow path having a plurality of coolant channels that extend circumferentially about the stator. A first portion of the plurality of coolant channels direct a coolant circumferentially about the stator in a clockwise direction and a second portion of the plurality of coolant channels direct the coolant circumferentially about the stator in a counter-clockwise direction. The coolant flow path includes a first outlet and a second outlet. The first outlet directs onto the first end turn, and the second outlet directs coolant onto the second end turn.
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公开(公告)号：US20240235305A9
公开(公告)日：2024-07-11
申请号：US17969234
申请日：2022-10-19
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: A rotating electric machine receiving a flow of fluid at a rotor includes a stator having stator slots and a plurality of stator windings for receiving electrical current; the rotor, concentrically received within the stator, including: at least one axially-extending fluid channel in fluid communication with an end face of the rotor and an opposite end face of the rotor, wherein the axially-extending fluid channel is configured to receive fluid applied by a fluid outlet spaced a distance from the end face of the rotor.
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公开(公告)号：US20240006961A1
公开(公告)日：2024-01-04
申请号：US18468798
申请日：2023-09-18
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: An electric machine includes a stator formed from a plurality of stator laminations arranged in a first lamination group and a second lamination group. The first lamination group and the second lamination group form a tortuous flow path that extends across the stator. The first lamination group includes at least two of the plurality of stator laminations joined together. The at least two of the plurality of stator laminations include a first plurality of cooling channel defining members. The second lamination group includes a second plurality of stator teeth and a second plurality of cooling channel defining members. The second plurality of cooling channel defining members of the second lamination group are circumferentially offset from corresponding ones of the first plurality of cooling channel defining members of the first lamination group.
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公开(公告)号：US12034336B2
公开(公告)日：2024-07-09
申请号：US17540333
申请日：2021-12-02
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
CPC classification number: H02K1/20 , H02K3/527 , H02K2201/09
Abstract: A wound field rotor includes a shaft having an outer surface, an inner surface defining a flow path, and an opening defining a passage extending from the flow path through the outer surface. A plurality of laminations is mounted to the outer surface. The plurality of laminations includes an inner annular surface disposed on the shaft and an outer annular surface defining a plurality of rotor teeth. A plurality of field windings is disposed about corresponding ones of the plurality of rotor teeth. A first portion of the plurality of rotor laminations includes a first passage portion that extends from the inner annular surface radially outwardly and is fluidically connected to the passage, and a second portion of the plurality or rotor laminations adjacent the first portion includes a second passage portion that includes a first end that registers with the first passage portion and a second end.
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公开(公告)号：US11811294B2
公开(公告)日：2023-11-07
申请号：US16739264
申请日：2020-01-10
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: An electric machine includes a stator formed from a plurality of stator laminations arranged in a first lamination group and a second lamination group that is circumferentially off-set from the first lamination group. The first lamination group and the second lamination group forming a tortuous flow path that extends axially across the stator. Each of the plurality of stator laminations of the first lamination group includes a body having an inner surface section and an outer surface section. The inner surface section includes a plurality of stator teeth. A plurality of cooling channel defining members is integrally formed with and extend radially outwardly from the outer surface section. Each of the plurality of cooling channel defining members being spaced from others of the plurality of cooling channel defining members by a corresponding gap.
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Patent Agency Ranking
公开(公告)号：US20200227977A1
公开(公告)日：2020-07-16
申请号：US16739264
申请日：2020-01-10
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
IPC: H02K9/00
Abstract: An electric machine includes a stator formed from a plurality of stator laminations arranged in a first lamination group and a second lamination group that is circumferentially off-set from the first lamination group. The first lamination group and the second lamination group forming a tortuous flow path that extends axially across the stator. Each of the plurality of stator laminations of the first lamination group includes a body having an inner surface section and an outer surface section. The inner surface section includes a plurality of stator teeth. A plurality of cooling channel defining members is integrally formed with and extend radially outwardly from the outer surface section. Each of the plurality of cooling channel defining members being spaced from others of the plurality of cooling channel defining members by a corresponding gap.
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公开(公告)号：US20240136877A1
公开(公告)日：2024-04-25
申请号：US17969234
申请日：2022-10-18
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: A rotating electric machine receiving a flow of fluid at a rotor includes a stator having stator slots and a plurality of stator windings for receiving electrical current; the rotor, concentrically received within the stator, including: at least one axially-extending fluid channel in fluid communication with an end face of the rotor and an opposite end face of the rotor, wherein the axially-extending fluid channel is configured to receive fluid applied by a fluid outlet spaced a distance from the end face of the rotor.
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公开(公告)号：US20230179037A1
公开(公告)日：2023-06-08
申请号：US17540333
申请日：2021-12-02
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
CPC classification number: H02K1/20 , H02K3/527 , H02K2201/09
Abstract: A wound field rotor includes a shaft having an outer surface, an inner surface defining a flow path, and an opening defining a passage extending from the flow path through the outer surface. A plurality of laminations is mounted to the outer surface. The plurality of laminations includes an inner annular surface disposed on the shaft and an outer annular surface defining a plurality of rotor teeth. A plurality of field windings is disposed about corresponding ones of the plurality of rotor teeth. A first portion of the plurality of rotor laminations includes a first passage portion that extends from the inner annular surface radially outwardly and is fluidically connected to the passage, and a second portion of the plurality or rotor laminations adjacent the first portion includes a second passage portion that includes a first end that registers with the first passage portion and a second end.
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公开(公告)号：US11469647B2
公开(公告)日：2022-10-11
申请号：US16887318
申请日：2020-05-29
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: An electric machine including a rotor and a stator positioned about the rotor. The stator includes a stator core having a plurality of stator teeth and a plurality of stator windings supported by the stator core about the plurality of stator teeth. The plurality of stator windings include a first end turn and a second end turn. The stator includes a plurality of interlocking insulators extending about corresponding ones of the plurality of stator teeth. Each of the plurality of interlocking insulators includes a first base portion extending circumferentially outwardly in a first direction and a second base portion extending circumferentially outwardly in a second direction. The first base portion being configured to inter-engage with a second base portion on an adjacent interlocking insulator to form a coolant passage and a coolant barrier about the air gap.
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公开(公告)号：US20220239170A1
公开(公告)日：2022-07-28
申请号：US17723618
申请日：2022-04-19
Applicant: BorgWarner Inc.
Inventor： Michael Duane Bradfield
Abstract: An electric machine including a housing and a stator mounted in the housing. The stator is formed from a plurality of stator laminations arranged in a first lamination group and a second lamination group that is circumferentially off-set from the first lamination group. The first lamination group and the second lamination group form a coolant flow path that extends circumferentially about and axially across the stator. Each of the plurality of stator laminations of the first and second lamination groups include a body having an inner surface section and an outer surface section. A plurality of cooling channels defining members is integrally formed with and extend radially outwardly from the outer surface section. The plurality of cooling channel defining members create a coolant flow path that extends circumferentially in a first plurality of channels and axially in a second plurality of channels across the stator.
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