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公开(公告)号：US11218060B2
公开(公告)日：2022-01-04
申请号：US16676868
申请日：2019-11-07
Applicant: GM Global Technology Operations LLC
Inventor： Jacob Elliott , John D. Campbell
Abstract: A wire forming press apparatus includes a press having a die assembly including a displaceable upper die moved with respect to a fixed lower die. A first lever arm is manually displaced to perform a first operation in a first direction on a wire blank positioned between the upper die and the lower die. A second lever arm is manually displaced to perform a second operation in a second direction opposite to the first direction on the wire blank. A first gear set is connected to and rotated by displacement of the first lever arm. A second gear set is connected to and is rotated by displacement of the second lever arm.
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公开(公告)号：US20140368233A1
公开(公告)日：2014-12-18
申请号：US13916483
申请日：2013-06-12
Applicant: GM Global Technology Operations LLC
Inventor： Thomas A. Perry , John D. Campbell
IPC: G01R31/34
CPC classification number: G01R31/34 , G01R31/346 , H02K15/00
Abstract: A continuity tester that has particular application for inspecting the insulation on the stator windings in an electric machine. The continuity tester includes a power supply, a brush having conductive bristles, and an analog-to-digital (A/D) converter. One terminal of the power supply is electrically coupled to the brush and another terminal of the power supply is electrically coupled to the A/D converter and the stator being tested. The conductive brush is selectively positioned against the exposed windings of the stator, and if an electrical circuit is formed as a result of loss of insulation, the potential at the input of the A/D converter drops, which can be detected. In one embodiment, the conductive brush is a manual brush that is moved across the stator windings, and in alternate embodiments the conductive brush is specially configured to be positioned against the conductive windings in an automated process.
Abstract translation: 一种连续性测试仪，具有特殊应用，用于检查电机中定子绕组上的绝缘。 连续性测试器包括电源，具有导电刷毛的刷子和模拟（A / D）转换器。 电源的一个端子电耦合到电刷，并且电源的另一个端子电耦合到A / D转换器和被测试的定子。 导电刷被选择性地定位成抵靠定子的暴露的绕组，并且如果由于绝缘损失而形成电路，则可以检测到A / D转换器的输入处的电位下降。 在一个实施例中，导电刷是穿过定子绕组移动的手动刷，并且在替代实施例中，导电刷被特别地构造成在自动化过程中抵靠导电绕组定位。
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公开(公告)号：US20210143713A1
公开(公告)日：2021-05-13
申请号：US16676868
申请日：2019-11-07
Applicant: GM Global Technology Operations LLC
Inventor： Jacob Elliott , John D. Campbell
Abstract: A wire forming press apparatus includes a press having a die assembly including a displaceable upper die moved with respect to a fixed lower die. A first lever arm is manually displaced to perform a first operation in a first direction on a wire blank positioned between the upper die and the lower die. A second lever arm is manually displaced to perform a second operation in a second direction opposite to the first direction on the wire blank. A first gear set is connected to and rotated by displacement of the first lever arm. A second gear set is connected to and is rotated by displacement of the second lever arm.
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公开(公告)号：US20190312477A1
公开(公告)日：2019-10-10
申请号：US15945256
申请日：2018-04-04
Applicant: GM Global Technology Operations LLC
Inventor： Scott Vaubel , John D. Campbell
IPC: H02K3/24 , H02K1/16 , H02K3/14 , H02K15/04 , H02K15/085
Abstract: A method of forming a stator assembly, including providing a stator with a plurality of slots and a plurality of conductors configured to be inserted into the plurality of slots. The method includes obtaining a respective first shape for the plurality of conductors such that the plurality of conductors in the respective first shape forms concentric arcs sharing a common center. Obtaining the respective first shape includes forming a respective first portion, a respective second portion and a respective turn portion between the respective first portion and respective second portion. The method includes obtaining a respective second shape for the plurality of conductors, including: bending the respective first portion at a respective first bend to obtain a respective first leg and a respective first arm, and bending the respective second portion at a respective second bend to obtain a respective second leg and a respective second arm.
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5.发明授权公开(公告)号：US12136856B2
公开(公告)日：2024-11-05
申请号：US17858214
申请日：2022-07-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： John D. Campbell , Edward L. Kaiser , Elizabeth Pepper , Caroline Bolt
IPC: H02K15/06 , H02K1/16 , H02K3/28 , H02K15/085
Abstract: A hairpin conductor includes two wire segments each having respective first and second ends and a respective middle region. The segments are disposed in a side-by-side orientation such that their first ends are proximate each other and their second ends are proximate each other. The first ends are welded to each other and the second ends are welded to each other, or the middle regions are welded to each other, thereby providing a welded wire assembly, which is bent such that the two wire segments are bent equally to form the hairpin conductor. The hairpin conductor has a primary bend in the middle regions to form an apex thereat and first and second secondary bends in the two wire segments nearer to the apex than to the first and second ends to form respective first and second shoulders thereat. A method of forming the hairpin conductor is also presented.
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Patent Agency Ranking
公开(公告)号：US11095197B2
公开(公告)日：2021-08-17
申请号：US16176013
申请日：2018-10-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： John S. Agapiou , John D. Campbell , Frederick W. Rhoads , Hongliang Wang , James G. Schroth , Thomas A. Perry
Abstract: A modular stator includes a first stator module and a second stator module. The first stator module includes a plurality of first coil end regions and a plurality of first junctions. The second stator module includes a plurality of second coil end regions and a plurality of second junctions. The first stator module and the second stator module are joined at the plurality of first junctions and the plurality of second junctions.
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公开(公告)号：US10992212B2
公开(公告)日：2021-04-27
申请号：US16176006
申请日：2018-10-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： John S. Agapiou , Hongliang Wang , Thomas A. Perry , John D. Campbell
Abstract: A method for manufacturing a stator includes the steps of: (1) providing a stator core module having a first stator fixture disposed on a first side of the stator core module, the first stator fixture is configured to support a first set of stator core junction portions in a fixed position; (2) providing a first crown module having a set of first crown junction portions and a first crown fixture to support the first set of first crown junction portions; (3) aligning the first stator fixture with the first crown fixture so that the first set of stator core junction portions are aligned with the first crown junction portions; and (4) joining the first set of stator core junction portions with the first crown junction portions.
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公开(公告)号：US09476944B2
公开(公告)日：2016-10-25
申请号：US13916483
申请日：2013-06-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Thomas A. Perry , John D. Campbell
CPC classification number: G01R31/34 , G01R31/346 , H02K15/00
Abstract: A continuity tester that has particular application for inspecting the insulation on the stator windings in an electric machine. The continuity tester includes a power supply, a brush having conductive bristles, and an analog-to-digital (A/D) converter. One terminal of the power supply is electrically coupled to the brush and another terminal of the power supply is electrically coupled to the A/D converter and the stator being tested. The conductive brush is selectively positioned against the exposed windings of the stator, and if an electrical circuit is formed as a result of loss of insulation, the potential at the input of the A/D converter drops, which can be detected. In one embodiment, the conductive brush is a manual brush that is moved across the stator windings, and in alternate embodiments the conductive brush is specially configured to be positioned against the conductive windings in an automated process.
Abstract translation: 一种连续性测试仪，具有特殊应用，用于检查电机中定子绕组上的绝缘。 连续性测试器包括电源，具有导电刷毛的刷子和模拟（A / D）转换器。 电源的一个端子电耦合到电刷，并且电源的另一个端子电耦合到A / D转换器和被测试的定子。 导电刷被选择性地定位成抵靠定子的暴露的绕组，并且如果由于绝缘损失而形成电路，则可以检测到A / D转换器的输入处的电位下降。 在一个实施例中，导电刷是穿过定子绕组移动的手动刷，并且在替代实施例中，导电刷被特别地构造成在自动化过程中抵靠导电绕组定位。
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公开(公告)号：US20240266812A1
公开(公告)日：2024-08-08
申请号：US18164078
申请日：2023-02-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： John D. Campbell , Elizabeth Pepper , Edward L. Kaiser
CPC classification number: H02G1/128 , H01B3/081 , H01B7/0009 , H02G1/1285
Abstract: An exposed terminal for a wire conductor, and a process for preparing the exposed terminal includes executing, via a mechanical device, a mechanical ablation process to remove the insulative material from an outer surface of the plurality of square edges along a predefined length of the portion of the wire conductor. The process also includes executing, via a laser tool, a laser ablation process to remove the insulative material from the first pair of opposed faces along the predefined length of the portion of the wire conductor; and executing, via the laser tool, the laser ablation process to remove the insulative material from the second pair of opposed faces along the predefined length of the portion of the wire conductor.
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公开(公告)号：US10916985B2
公开(公告)日：2021-02-09
申请号：US15945256
申请日：2018-04-04
Applicant: GM Global Technology Operations LLC
Inventor： Scott Vaubel , John D. Campbell
IPC: H02K3/24 , H02K1/16 , H02K15/085 , H02K15/04 , H02K3/14
Abstract: A method of forming a stator assembly, including providing a stator with a plurality of slots and a plurality of conductors configured to be inserted into the plurality of slots. The method includes obtaining a respective first shape for the plurality of conductors such that the plurality of conductors in the respective first shape forms concentric arcs sharing a common center. Obtaining the respective first shape includes forming a respective first portion, a respective second portion and a respective turn portion between the respective first portion and respective second portion. The method includes obtaining a respective second shape for the plurality of conductors, including: bending the respective first portion at a respective first bend to obtain a respective first leg and a respective first arm, and bending the respective second portion at a respective second bend to obtain a respective second leg and a respective second arm.
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