WO2013035482A1 - 回転電機の固定子、および回転電機 - Google Patents
回転電機の固定子、および回転電機 Download PDFInfo
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- WO2013035482A1 WO2013035482A1 PCT/JP2012/070246 JP2012070246W WO2013035482A1 WO 2013035482 A1 WO2013035482 A1 WO 2013035482A1 JP 2012070246 W JP2012070246 W JP 2012070246W WO 2013035482 A1 WO2013035482 A1 WO 2013035482A1
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- stator
- rotating electrical
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
- H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
- H02K15/0081—Connecting winding sections; Forming leads; Connecting leads to terminals for form-wound windings
- H02K15/0087—Connecting winding sections; Forming leads; Connecting leads to terminals for form-wound windings characterised by the method or apparatus for simultaneously twisting a plurality of hairpins open ends after insertion into the machine
Definitions
- the present invention relates to a stator using a flat wire as a winding conductor, and a rotating electrical machine including the stator.
- Rotating electrical machines used for driving vehicles are required to be small and have high output.
- a rectangular wire is used for the purpose of improving the space factor and output, and a winding method using a rectangular wire segment is used.
- a flat wire formed in a U-shape is inserted into the stator core, and the straight wire portions protruding from the stator core are twisted in the circumferential direction to connect with the flat wire in different slots.
- a neutral wire that connects the windings of each phase is required, but the shape of the neutral wire is significantly different from the U-shaped coil described above, and the shape becomes complicated, such as turning over the coil end. .
- a neutral wire is configured by connecting the connecting wires to each other using the connecting wires between the different phases generated by continuously winding the different-phase coils. Further, in the invention described in Patent Document 2, the connecting wire generated by continuously winding the in-phase coil is connected to each other to form a neutral wire for star connection.
- Patent Document 1 is mainly intended to be applied to a split core, and is difficult to apply to a flat wire segment. Further, in the method of Patent Document 2, a connecting wire generated by continuously winding the same phase is used. However, in a stator using a rectangular wire segment, the winding is not continuous and a connecting wire is not generated. Not applicable.
- a stator of a rotating electrical machine is formed of a stator core having a plurality of slots arranged in the circumferential direction, and a rectangular cross-section conductor having an insulating coating, and is fixed into the slot
- a stator winding comprising: a first winding, a second winding, and a third phase winding formed by connecting a plurality of segment coils formed in a substantially U shape;
- a first neutral wire formed by a single continuous conductor straddling the first slot and the second slot, and connecting the first phase winding and the second phase winding; and a third slot And a second neutral wire that is pulled out from and connects the third phase winding and the first neutral wire.
- a rotating electrical machine includes the stator according to the above aspect and a rotor that is rotatably disposed through a gap between the stator iron core.
- FIG. 1 is a diagram showing a schematic configuration of a hybrid electric vehicle in which the rotating electrical machine of the present embodiment is mounted as a traveling motor.
- 2 is a cross-sectional view of the rotating electrical machine shown in FIG. 3 is a cross-sectional view taken along the line AA in FIG.
- FIG. 4 is a perspective view of the stator 230.
- FIG. 5 is a diagram illustrating the segment coil 240.
- FIG. 6 is a diagram for explaining a method of removing a rectangular insulating film.
- FIG. 7 is a diagram illustrating a connection structure of the stator winding 238.
- FIG. 8 is a diagram showing a schematic shape of the winding at the portion indicated by reference numeral B in FIG. FIG.
- FIG. 9 is a diagram showing the shapes of the coil end portions 244d and 245c of the neutral wires 244 and 245 drawn to one end side of the stator core 232.
- FIG. 10 is a diagram showing a schematic view of the neutral line 245 after forming.
- FIG. 11 is a diagram illustrating a first modification.
- FIG. 12 is a diagram illustrating a second modification.
- FIG. 13 is a perspective view of a conventional stator.
- FIG. 14 is a diagram illustrating a neutral wire connection structure of the stator shown in FIG. 13.
- the rotating electrical machine of the present embodiment uses a rectangular wire that can be high-powered and downsized, and is therefore suitable as a motor for driving an electric vehicle, for example. Furthermore, the present invention can be applied not only to a pure electric vehicle that runs only by a rotating electric machine but also to a hybrid car that is driven by both an engine and a rotating electric machine. Hereinafter, a hybrid vehicle will be described as an example.
- FIG. 1 is a diagram showing a schematic configuration of a hybrid electric vehicle in which the rotating electrical machine of the present embodiment is mounted as a traveling motor. As shown in FIG. 1, an engine 120, a first rotating electrical machine 200, a second rotating electrical machine 202, and a high voltage battery 180 are mounted on a vehicle 100 of a hybrid vehicle.
- the battery 180 is constituted by a secondary battery such as a lithium ion battery or a nickel metal hydride battery, and outputs high-voltage DC power of 250 to 600 volts or more.
- the battery 180 supplies DC power to the rotating electrical machines 200 and 202 when the driving force by the rotating electrical machines 200 and 202 is required, and DC power is supplied from the rotating electrical machines 200 and 202 during regenerative travel. Transfer of direct-current power between the battery 180 and the rotating electrical machines 200 and 202 is performed via the power converter 600.
- the vehicle is equipped with a battery that supplies low-voltage power (for example, 14-volt power).
- Rotational torque generated by the engine 120 and the rotating electrical machines 200 and 202 is transmitted to the front wheels 110 via the transmission 130 and the differential gear 160. Since the rotary electric machines 200 and 202 are configured in substantially the same manner, the rotary electric machine 200 will be described below as a representative.
- FIG. 2 is a cross-sectional view of the rotating electrical machine shown in FIG.
- the rotating electrical machine 200 includes a housing 212, a stator 230 held inside the housing 212, and a rotor 250.
- the stator 230 includes a stator core 232 and a stator winding 238.
- Inside the stator core 232 a rotor 250 is rotatably held through a gap 222.
- the rotor 250 includes a rotor core 252, a permanent magnet 254, and a non-magnetic cover plate 226.
- the rotor core 252 is fixed to a cylindrical shaft 218.
- the direction along the axis J of the shaft 218 is referred to as “axial direction”
- the rotation direction around the axis J is referred to as “circumferential direction”
- the radial direction around the axis J is referred to as “radial direction”.
- the housing 212 has a pair of end brackets 214 provided with bearings 216, and the shaft 218 is rotatably held by these bearings 216.
- the shaft 218 is provided with a resolver 224 that detects the position and rotation speed of the pole of the rotor 250.
- FIG. 3 is a cross section taken along the line AA in FIG.
- the housing 212 and the stator winding 238 are not shown.
- a plurality of slots 24 and a plurality of teeth 236 are evenly arranged over the entire circumference.
- not all of the slots and teeth are denoted by reference numerals, and only a part of the teeth and slots are representatively denoted.
- U-phase, V-phase, and W-phase phase windings are mounted in the slot 24.
- an insulating member called a slot liner is disposed in the slot 24.
- distributed winding is adopted as a method of winding the stator winding 238.
- the distributed winding is a winding method in which the phase windings are wound around the stator core 232 so that the phase windings are accommodated in two slots that are spaced apart from each other across the plurality of slots 24.
- distributed winding is adopted as the winding method, so that the formed magnetic flux distribution is close to a sine wave shape, and it is easy to obtain reluctance torque. Therefore, it is possible to control not only a low rotational speed but also a wide rotational speed range up to a high rotational speed by utilizing field weakening control and reluctance torque, which is suitable for obtaining motor characteristics of an electric vehicle or the like.
- a rectangular hole 253 is formed in the rotor core 252.
- Permanent magnets 254a and 254b (hereinafter, representatively referred to as 254) are embedded in the hole 253 and fixed with an adhesive or the like.
- the circumferential width of the hole 253 is set larger than the circumferential width of the permanent magnet 254.
- Magnetic gaps 256 are formed on both sides of the permanent magnet 254.
- the magnetic gap 256 may be embedded with an adhesive, or may be solidified integrally with the permanent magnet 254 with a molding resin.
- Permanent magnet 254 acts as a field pole for rotor 250.
- the magnetization direction of the permanent magnet 254 is in the radial direction, and the direction of the magnetization direction is reversed for each field pole. That is, if the stator side surface of the permanent magnet 254a is N pole and the shaft side surface is S pole, the stator side surface of the adjacent permanent magnet 254b is S pole, and the shaft side surface is N pole. It has become.
- These permanent magnets 254a and 254b are alternately arranged in the circumferential direction. In this embodiment, eight permanent magnets 254 are arranged at equal intervals, and the rotor 250 has eight poles.
- Keys 255 project from the inner peripheral surface of the rotor core 252 at predetermined intervals.
- a keyway 261 is recessed in the outer peripheral surface of the shaft 218.
- the key 255 is fitted into the key groove 261 with a clearance fit, and rotational torque is transmitted from the rotor 250 to the shaft 218.
- the permanent magnet 254 may be magnetized and embedded in the rotor core 252 or may be inserted into the rotor core 252 before being magnetized and then magnetized by applying a strong magnetic field.
- the magnetized permanent magnet 254 is a strong magnet. If the magnet is magnetized before the permanent magnet 254 is fixed to the rotor 250, a strong attractive force is generated between the permanent magnet 254 and the rotor core 252 when the permanent magnet 254 is fixed. This suction force prevents the work. Moreover, there is a possibility that dust such as iron powder adheres to the permanent magnet 254 due to the strong attractive force. Therefore, the productivity of the rotating electrical machine is improved when the permanent magnet 254 is magnetized after being inserted into the rotor core 252.
- both the rotating electrical machines 200 and 202 are based on the present embodiment, but only one rotating electrical machine 200 or 202 is configured as the present embodiment, and the other is employed for the other. May be.
- FIG. 4 is a perspective view of the stator 230.
- a rectangular wire is used for the stator winding 238.
- a rectangular wire having a rectangular cross section is formed in advance into a segment coil 240 formed with a U-shaped portion 240b as shown on the upper side of FIG.
- the segment coil 240 is inserted into the slot 24 provided with the slot insulating member 235 from the axial direction.
- the straight portion 240 a of the segment coil 240 is inserted into the two slots 24 that are spaced apart from each other across the plurality of slots 24.
- the segment coil 240 may be formed as follows. After forming the flat wire into a simple U-shape, twisting is performed by spreading the other straight portion at a predetermined interval in the circumferential direction with reference to the straight portion on one side. After molding, the straight portion is inserted into the slot 24 from the axial direction in the stator core 232 in the same manner as described above. In this case, the U-shaped portion of the stator winding 238 is not formed by a mold but is formed by twisting.
- the insulating coating such as enamel is applied to the rectangular wire, the insulating coating at the end is removed in advance by the method shown in FIG.
- the press peeling method described below there are several methods for removing the insulating film, for example, using chemicals. In this embodiment, the press peeling method described below is used.
- the flat wire 273 formed into a U shape or the flat wire 273 before forming is passed through a guide 270 for fixing the position.
- An upper die 271 and a lower die 272 are provided at the tip of the guide 270.
- the insulating film including the conductor portion of the rectangular wire 273 is removed, and a peeling portion is formed. .
- a peeling part becomes thinner than the non-peeling part provided with the insulating film.
- the conductor of the peeled portion is slightly crushed to increase the width, and the enlarged portion is separated from the upper die 271 and the lower die 272. What is necessary is just to remove so that a width
- a welding side coil end group 239b is formed on one side of the stator core 232 in the axial direction.
- the welding side coil end group 239b is formed by arranging the welded portions of the segment coils 240 in a circular shape.
- a coil end 239 a configured by the U-shaped portions 240 b of the plurality of segment coils 240 is formed on the other axial side of the stator core 232.
- the lead lines are not shown and are omitted.
- symbol 244,245 pulled out to the coil end 239a side is a neutral wire.
- the present embodiment is characterized by the structure of these neutral wires 244 and 245.
- 7 to 9 are diagrams illustrating the neutral lines 244 and 245.
- the stator winding 238 of the present embodiment is a 1 star connection winding, and the neutral wire of the U-phase winding and the neutral wire of the V-phase winding are connected. Yes.
- the neutral wire of the U-phase winding and the neutral wire of the W-phase winding consist of one continuous rectangular wire (hereinafter referred to as neutral wire 244), of which The neutral wire 245 of the V-phase winding is connected to the neutral wire 244.
- FIG. 8 is a diagram showing a schematic shape of the winding of the portion indicated by the symbol B in FIG.
- the segment coil 240 (U) of the U-phase winding is connected to one end of the neutral wire 244 of the flat wire, and the segment coil 240 (W) of the V-phase winding is connected to the other end of the neutral wire 244. Yes.
- the neutral wire 244 includes straight conductor portions 244b and 244c and coil end portions 244d, 244e and 244f accommodated in the slots.
- the segment coil 240 (V) of the V-phase winding is connected to one end of the neutral wire 245, and the other end of the neutral wire 245 is connected to the coil end portion 244 d of the neutral wire 244.
- the neutral wire 245 includes a straight conductor portion 245b accommodated in the slot 24 and coil end portions 245c and 245d.
- FIG. 9 is a view showing the shapes of the coil end portions 244d and 245c of the neutral wires 244 and 245 drawn to one end side of the stator core 232.
- FIG. FIG. 9 shows the neutral wires 244 and 245 in the stator winding 238, and illustration of the windings constituting the coil end 239a is omitted.
- the neutral wire 244 drawn out from the slot 24 in which the straight conductor portion 244c is inserted is wound along the coil end 239a (see FIG. 4) and bent from the middle to the opposite side.
- the bent neutral wire 244 is wound around the coil end 239a in the reverse direction, and then goes down along the coil end 239a (see FIG.
- the neutral wire 245 drawn out from the slot 24 in which the straight portion 245b is inserted is wound along the coil end 239a and then bent in the opposite direction to become the neutral wire 244 on the coil end 239a. Connected.
- the insulating coatings are removed from the connecting portions 244a and 245a of the neutral wires 244 and 245 by the method described above. Brazing, TIG welding, or the like is used to connect the connection portions 244a and 245a.
- the connecting portions 244 a and 245 a are connected in the radial direction of the stator core 232 so that the coil end height is suppressed.
- the reason why the insulating film is peeled off as shown in FIG. 9 is to facilitate the connection and does not necessarily have to be peeled off.
- the neutral wires 244 and 245 may be connected after the straight conductor portions 244b, 244c and 245b shown in FIG. 8 are inserted into the slot 24 of the stator core 232, or may be connected before the insertion. I do not care. In any case, the shapes of the neutral wires 244 and 245 along the coil end 239a shown in FIG. 9 are formed in advance.
- FIG. 10 is a diagram showing a schematic view of the neutral line 245 after forming.
- FIG. 10A is a view of the neutral wire 245 seen from the side of the stator
- FIG. 10B is a view seen from the axial direction.
- the neutral wire 245 is composed of the straight shape portion S and the bent shape portion C, and the impression of the forming pin is formed on the surface of the flat wire.
- FIG. 11 is a diagram showing a first modification.
- the neutral wire of the U-phase winding and the neutral wire of the V-phase winding are configured by a common rectangular wire to form one neutral wire 246.
- the connecting portion 247a of the neutral wire 247 of the W-phase winding is connected to the connecting portion 246a provided at the intermediate portion of the neutral wire 246.
- the connecting portions 246a and 247a are arranged so as to be arranged in the radial direction in the same manner as the connecting portions 244a and 245a in FIG.
- FIG. 12 is a diagram showing a second modification.
- the neutral wire of the U-phase winding and the neutral wire of the W-phase winding are formed by a single neutral wire 248 as in the case of FIG.
- the connection part 249a of the neutral line 249 of V phase winding is arrange
- the coil end height is higher than when arranged in the radial direction as shown in FIG. 4, but the radial width of the connecting portion can be made smaller.
- the shape shown in FIG. 12 has a very small range that crawls on the coil end 239a, and not only can the insulation with other coils be improved, but also the shape becomes very simple.
- connection part 244a, 245a of FIG. 9 the connection part (for example, connection part 244a, 245a of FIG. 9) of a neutral wire needs to be insulated from other coils.
- a resin such as varnish or a tubular insulating member (indicated by a broken line T in FIG. 9).
- the above measures are not necessary.
- FIG. 13 and 14 show perspective views of a conventional stator as a comparative example.
- FIG. 13 corresponds to FIG. 4 and
- FIG. 14 corresponds to FIG.
- neutral wires 241, 242, and 243 indicate a neutral wire of the W-phase winding, a neutral wire of the V-phase winding, and a neutral wire of the U-phase winding in this order.
- the neutral wires 241, 242, and 243 include linear conductor portions 241b, 242b, and 243b, and coil end portions 241c, 241d, 242c, 242d, 243c, and 243d, respectively.
- the neutral wires 241, 242, and 243 drawn from the slot 24 are formed in a shape toward the top of the coil end along the shape of the U-shaped portion 240 b of the segment coil 240 constituting the coil end 239 a. Yes. And these junction parts are joined by brazing etc. in the coil end top part.
- the number of neutral wires can be reduced to two, so that not only the scooping length on the coil end 239a can be reduced, but also the number of parts can be reduced. Further, since the neutral wires 244 combined into one are inserted into two slots, the position of the connecting portion with the other neutral wire 245 is easily determined, and the connection is facilitated.
- the width dimension in the radial direction of the connecting portion is equivalent to two rectangular wires in the configuration shown in FIGS. 4 and 11, and is equivalent to one in the configuration shown in FIG. 12. In either case, the radial dimension should be reduced. Can do.
- the neutral wire structure is as shown in FIG. 4, thereby improving the positioning at the time of connection, improving the insulation of the scooping portion, and improving the efficiency. Improvements can be made.
- Stator winding 238 has U-phase, V-phase, and W-phase windings formed by connecting a plurality of segment coils 240 formed in a substantially U shape.
- the neutral wire 244 that connects the U-phase winding and the W-phase winding is formed by a single continuous conductor so as to straddle different slots 24.
- a neutral wire 245 that connects 244 and the V-phase winding is drawn from the slot 24 disposed between the two slots and connected to the neutral wire 244.
- connection portion of the two neutral wires 244 and 245 is connected in this embodiment, positioning is easier than in the case of connecting three neutral wires as in the prior art.
- the workability of the connection work can be improved.
- the length of the entire neutral wire can be shortened, and the efficiency of the rotating electrical machine can be improved.
- the pitch of the three slots from which the neutral lines 244 and 245 are drawn is set to the same slot pitch as shown in FIG.
- the pitch is not the same, it can be shortened.
- a neutral wire 244 may be provided between the U-phase winding and the W-phase winding as shown in FIG. 9, or as shown in FIG. May be provided with a neutral wire 246 between the U-phase winding and the V-phase winding, and although not shown, a neutral wire is provided between the V-phase winding and the W-phase winding. Also good.
- the two connecting portions are arranged so as to be aligned in the radial direction of the stator core 232 as shown in FIGS.
- the radial dimension can be suppressed as compared with the conventional configuration in which three connecting portions are arranged in the radial direction.
- the conductor of the portion drawn out of at least one of the neutral wires 244 and 245 shown in FIG. 9 is composed of the linear shape portion S and the bent shape portion C as shown in FIG. A simple shape can be formed easily.
- the neutral wire can be shaped so as to be wound so as not to contact the coil of the coil end 239a, and an increase in the dimension of the coil end can be suppressed as much as possible.
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Abstract
Description
本発明の一の態様によると、回転電機は、上記態様の固定子と、固定子鉄心との間に隙間を介して回転自在に配置された回転子と、を備える。
日本国特許出願2011年第194885号(2011年9月7日出願)
Claims (10)
- 周方向に並んだ複数のスロットを有する固定子鉄心と、
絶縁被膜を備えた矩形断面の導体で形成され、前記スロットに挿入される固定子巻線と、を備える回転電機の固定子において、
前記固定子巻線は、
略U字形状に成形されたセグメントコイルを複数接続して成る第1、第2および第3の相巻線と、
第1のスロットと第2のスロットとに跨る連続した一本の導体で形成され、前記第1の相巻線と前記第2の相巻線とを繋ぐ第1の中性線と、
第3のスロットから引き出されて前記第3の相巻線と前記第1の中性線とを接続する第2の中性線と、を備える回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1の中性線が挿入される前記第1および第2のスロットと、前記第2の中性線が挿入される前記第3のスロットは、
前記第1のスロット、前記第3のスロット、前記第2のスロットの順に周方向に並んでいる回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1の中性線が挿入される前記第1および第2のスロットと、前記第2の中性線が挿入される前記第3のスロットは、
前記第1のスロット、前記第2のスロット、前記第3のスロットの順に周方向に並んでいる回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1,第2および第3のスロットは同一スロットピッチで配置されている回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1の中性線の接続部と前記第2の中性線の接続部とが、前記固定子鉄心の径方向に並ぶように配置されている回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1の中性線の接続部と前記第2の中性線の接続部とが、前記固定子鉄心の軸方向に並ぶように配置されている回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1および第2の中性線の少なくとも一方は、スロット外に引き出された部分の導体が直線形状部と曲げ形状部とで構成されている回転電機の固定子。 - 請求項1に記載の回転電機の固定子において、
前記第1および第2の中性線の接続部は、それぞれ前記絶縁被膜が除去されている回転電機の固定子。 - 請求項8に記載の回転電機の固定子において、
互いに接続された第1および第2の中性線の接続部は絶縁材で覆われている回転電機の固定子。 - 請求項1に記載の回転電機の固定子と、
前記固定子鉄心との間に隙間を介して回転自在に配置された回転子と、を備えた回転電機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE112012003722.7T DE112012003722T5 (de) | 2011-09-07 | 2012-08-08 | Stator für rotierende elektrische Maschine und rotierende elektrische Maschine |
CN201280040118.6A CN103733482A (zh) | 2011-09-07 | 2012-08-08 | 旋转电机的定子和旋转电机 |
US14/237,485 US20140184011A1 (en) | 2011-09-07 | 2012-08-08 | Stator for Rotating Electrical Machine and Rotating Electrical Machine |
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JP2011194885A JP2013059156A (ja) | 2011-09-07 | 2011-09-07 | 回転電機の固定子、および回転電機 |
JP2011-194885 | 2011-09-07 |
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JP (1) | JP2013059156A (ja) |
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DE102015221802A1 (de) * | 2015-11-06 | 2017-05-11 | Bayerische Motoren Werke Aktiengesellschaft | Rotationsmaschine und Kraftfahrzeug |
JP6310976B2 (ja) | 2016-09-02 | 2018-04-11 | 本田技研工業株式会社 | 回転電機のステータ |
DE102017208012A1 (de) * | 2017-05-11 | 2018-11-15 | Robert Bosch Gmbh | Stator für eine elektrische Maschine |
CN107546877B (zh) * | 2017-09-26 | 2023-11-03 | 浙江方正电机股份有限公司 | 一种三相扁线电机定子及电机 |
FR3075502B1 (fr) | 2017-12-20 | 2019-11-08 | Valeo Equipements Electriques Moteur | Stator pour machine electrique tournante |
US10707713B2 (en) | 2018-01-15 | 2020-07-07 | Ford Global Technologies, Llc | Balanced hairpin winding electric machine |
US10998787B2 (en) | 2018-03-13 | 2021-05-04 | Ford Global Technologies, Llc | Hairpin winding electric machine with staggered hairpin connections |
DE102018207231A1 (de) * | 2018-05-09 | 2019-11-14 | Volkswagen Aktiengesellschaft | Stator für eine elektrische Maschine, elektrische Maschine und Herstellungsverfahren für einen Stator für eine elektrische Maschine |
US10985625B2 (en) * | 2018-10-09 | 2021-04-20 | Delta Electronics, Inc. | Motor stator and forming method thereof |
US11056954B2 (en) * | 2018-11-28 | 2021-07-06 | Ford Global Technologies, Llc | Hairpin winding electric machine with multi-conductor hairpin assemblies |
CN111725933A (zh) * | 2020-07-08 | 2020-09-29 | 深圳市京泉华科技股份有限公司 | 磁极组件、磁极组件制作方法及电机 |
DE102021105651A1 (de) | 2021-03-09 | 2022-09-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Hochvolt-Elektromotor-Statoranordnung |
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- 2012-08-08 WO PCT/JP2012/070246 patent/WO2013035482A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
US20140184011A1 (en) | 2014-07-03 |
JP2013059156A (ja) | 2013-03-28 |
CN103733482A (zh) | 2014-04-16 |
DE112012003722T5 (de) | 2014-06-26 |
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