WO2011089685A1 - ステータおよび回転電機 - Google Patents
ステータおよび回転電機 Download PDFInfo
- Publication number
- WO2011089685A1 WO2011089685A1 PCT/JP2010/050527 JP2010050527W WO2011089685A1 WO 2011089685 A1 WO2011089685 A1 WO 2011089685A1 JP 2010050527 W JP2010050527 W JP 2010050527W WO 2011089685 A1 WO2011089685 A1 WO 2011089685A1
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- WIPO (PCT)
- Prior art keywords
- stator
- stator core
- bending member
- circumferential direction
- split
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
Definitions
- the present invention relates to a stator and a rotating electric machine, and particularly relates to a stator including a plurality of divided stator cores and a rotating electric machine including the stator.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2009-118634
- a split core and a ring mounted on the outer periphery of the split core are provided, and at least two or more protrusions are provided at a joint between adjacent split cores.
- a rotating electric machine including at least one gap.
- Patent Document 2 discloses a brushless motor including a stator core having a plurality of teeth and having a hollow portion extending in the axial direction on the outer peripheral surface thereof.
- a configuration has been proposed in which cores are assembled, press-fitted and fixed in a case, and an inner peripheral surface in the case is formed with a notch groove along the axial direction.
- JP 2007-259581 A Patent Document 3
- a concave portion is provided on the outer peripheral surface of the yoke portion of each divided core in the motor radial direction, and a plurality of convex portions fitted into the concave portion are provided in the holding ring.
- a stator provided on the circumferential surface has been proposed.
- Patent Document 1 the plurality of divided stator cores are fastened by a shrink-fit ring that uniformly contacts the outer peripheral surface thereof.
- the stress value acting on the split stator core from this ring is high on average in the entire outer peripheral surface of the split stator core, and the iron loss increases. Since the iron loss increases at the portion where the compressive stress is applied to the split stator core, the stress is averagely applied to the entire split stator core from the outer peripheral side, thereby increasing the iron loss as the entire split stator core.
- the present invention has been made in view of the above problems, and a main object thereof is to provide a stator that can reduce iron loss and secure a fastening force of a split stator core.
- the stator according to the present invention is a substantially hollow cylindrical stator and includes a plurality of divided stator cores.
- the divided stator cores are arranged adjacent to each other in the circumferential direction of the stator.
- the split stator core has an outer surface on the radially outer side of the stator.
- the stator also includes the same number of curved members as the split stator core.
- the bending member extends in the circumferential direction.
- the bending member has a convex shape portion that curves convexly toward the outer surface. The bending member contacts the outer surface and presses the outer surface inward in the radial direction of the stator.
- a concave portion is formed on the outer surface of the divided stator core.
- the curved member has a convex portion accommodated in the concave portion and contacts the outer surface inside the concave portion.
- the recess is formed in the center portion in the circumferential direction of the outer surface of the divided stator core.
- the bending member extends in the axial direction of the stator.
- the stator further includes a connecting member that connects the plurality of bending members.
- the bending member has an axial end portion and is disposed so that the axial end portion does not contact the split stator core.
- the connecting member is coupled to the axial end.
- a rotating electrical machine includes a rotating shaft that is rotatably provided, a rotor fixed to the rotating shaft, and a stator according to any one of the above-described aspects disposed around the rotor.
- stator of the present invention iron loss can be reduced and the fastening force of the split stator core can be secured.
- FIG. 6 is a diagram illustrating a configuration of a stator according to a second embodiment.
- FIG. 1 is a diagram for explaining a configuration of a drive unit of a vehicle including a rotary electric machine 2200 including a rotor 120 according to Embodiment 1 of the present invention.
- PCU (power control unit) 2700 includes a converter 2710, an inverter 2720, a control device 2730, capacitors C1 and C2, power supply lines PL1 to PL3, output lines 2740U, 2740V, and 2740W. including.
- Converter 2710 is connected between battery 3000 and inverter 2720, and inverter 2720 is connected to rotating electrical machine 2200 via output lines 2740U, 2740V, and 2740W.
- Battery 3000 connected to converter 2710 is a secondary battery such as nickel metal hydride or lithium ion. Battery 3000 supplies the generated DC voltage to converter 2710 and is charged by the DC voltage received from converter 2710.
- Converter 2710 includes power transistors Q1 and Q2, diodes D1 and D2, and a reactor L.
- Power transistors Q1 and Q2 are connected in series between power supply lines PL2 and PL3, and receive a control signal from control device 2730 as a base.
- Diodes D1 and D2 are connected between the collector and emitter of power transistors Q1 and Q2, respectively, so that current flows from the emitter side to the collector side of power transistors Q1 and Q2.
- Reactor L has one end connected to power supply line PL1 connected to the positive electrode of battery 3000, and the other end connected to a connection point of power transistors Q1 and Q2.
- This converter 2710 boosts the DC voltage received from battery 3000 using reactor L, and supplies the boosted boosted voltage to power supply line PL2. In addition, converter 2710 steps down the DC voltage received from inverter 2720 and charges battery 3000.
- the inverter 2720 includes a U-phase arm 2750U, a V-phase arm 2750V, and a W-phase arm 2750W. Each phase arm is connected in parallel between power supply lines PL2 and PL3.
- U-phase arm 2750U includes power transistors Q3 and Q4 connected in series
- V-phase arm 2750V includes power transistors Q5 and Q6 connected in series
- W-phase arm 2750W includes power transistors connected in series.
- Transistors Q7 and Q8 are included.
- Diodes D3-D8 are respectively connected between the collector and emitter of power transistors Q3-Q8 so that current flows from the emitter side to the collector side of power transistors Q3-Q8, respectively.
- the connection point of each power transistor in each phase arm is connected to the anti-neutral point side of each phase coil of rotating electrical machine 2200 as a motor generator via output lines 2740U, 2740V, 2740W.
- Inverter 2720 converts a DC voltage received from power supply line PL2 into an AC voltage based on a control signal from control device 2730, and outputs the AC voltage to rotating electric machine 2200. Inverter 2720 rectifies the AC voltage generated by rotating electric machine 2200 into a DC voltage and supplies the rectified voltage to power supply line PL2.
- the capacitor C1 is connected between the power supply lines PL1 and PL3, and smoothes the voltage level of the power supply line PL1.
- Capacitor C2 is connected between power supply lines PL2 and PL3, and smoothes the voltage level of power supply line PL2.
- Control device 2730 calculates each phase coil voltage of rotating electric machine 2200 based on the motor torque command value, each phase current value of rotating electric machine 2200, and the input voltage of inverter 2720, and based on the calculation result, power transistors Q3 ⁇ A PWM (Pulse Width Modulation) signal for turning on / off Q8 is generated and output to inverter 2720.
- PWM Pulse Width Modulation
- Control device 2730 calculates the duty ratio of power transistors Q1 and Q2 for optimizing the input voltage of inverter 2720 based on the motor torque command value and motor rotation speed described above, and the power is calculated based on the calculation result.
- a PWM signal for turning on / off transistors Q1 and Q2 is generated and output to converter 2710.
- control device 2730 controls the switching operation of power transistors Q1 to Q8 in converter 2710 and inverter 2720 to convert AC power generated by rotating electrical machine 2200 into DC power to charge battery 3000.
- converter 2710 boosts a DC voltage received from battery 3000 based on a control signal from control device 2730 and supplies the boosted voltage to power supply line PL2.
- Inverter 2720 receives the DC voltage smoothed by capacitor C2 from power supply line PL2, converts the received DC voltage into an AC voltage, and outputs the AC voltage to rotating electrical machine 2200.
- inverter 2720 converts the AC voltage generated by the regenerative operation of rotating electrical machine 2200 into a DC voltage and outputs it to power supply line PL2.
- Converter 2710 receives the DC voltage smoothed by capacitor C2 from power supply line PL2, and steps down the received DC voltage to charge battery 3000.
- FIG. 2 is a side sectional view showing a schematic configuration of the rotating electrical machine 2200 shown in FIG.
- the rotating electrical machine 2200 includes a rotating shaft 110 that is rotatable about a rotation center line O, and a rotor 120 that is fixed to the rotating shaft 110 and is rotatable with the rotating shaft 110. , And an annular stator 140 disposed around the rotor 120.
- the rotating electrical machine 2200 is typically mounted on a hybrid vehicle, and functions as a drive source that drives wheels, or a generator that generates electricity using power from an engine or the like. Further, the rotating electrical machine 2200 can be applied to an electric vehicle that runs only on electric power without an engine, and a fuel cell vehicle that includes a fuel cell that generates electric energy using fuel as an on-vehicle power source.
- the rotor 120 includes a substantially cylindrical rotor core 125 in which a magnet insertion hole 126 as an example of a hole extending in the axial direction is formed.
- the rotor 120 also includes a permanent magnet 123 inserted and embedded in the magnet insertion hole 126.
- the permanent magnet 123 extends in the axial direction of the rotor core 125.
- the rotor 120 also includes an end plate 122 provided on the axial end surface of the rotor core 125.
- the permanent magnet 123 is fixed by a resin 124 filled in the magnet insertion hole 126.
- the rotating electrical machine 2200 is an IPM (Interior Permanent Magnet) motor in which a permanent magnet 123 is embedded in a rotor core 125.
- the stator 140 is formed in a substantially hollow cylindrical shape, and has a stator core formed in an annular shape so as to surround the rotor 120, and a U-phase coil 180U, a V-phase coil 180V, which are wound around the stator core and mounted. W-phase coil 180W.
- An insulating mold resin 172 is formed on the axial end surfaces 177 and 178 of the stator 140. The axial end surfaces 177 and 178 of the stator 140 are covered with a mold resin 172.
- the mold resin 172 includes, for example, a thermosetting resin such as BMC (Bulk Molding Compound) or an epoxy resin, or a thermoplastic resin such as PPS (Polyphenylene Sulfide) or PBT (Polybutylene Terephthalate).
- a thermosetting resin such as BMC (Bulk Molding Compound) or an epoxy resin
- a thermoplastic resin such as PPS (Polyphenylene Sulfide) or PBT (Polybutylene Terephthalate).
- FIG. 3 is a plan view of the stator 140 viewed in plan from the rotation center line O direction.
- FIG. 4 is an exploded view showing a set of divided stator core 141 and bending member 151 in an enlarged manner.
- the stator 140 includes a plurality of divided stator cores 141.
- the divided stator core 141 is divided in the circumferential direction DR1 of the stator 140 and is disposed adjacent to each other.
- the divided stator core 141 may be formed by laminating a plurality of electromagnetic steel plates, or may be formed by a dust core.
- the divided stator core 141 includes an annular yoke portion 176 that annularly extends in the circumferential direction DR ⁇ b> 1 of the stator 140, and an inner circumferential surface of the yoke portion 176 in the radial direction DR ⁇ b> 2 of the stator 140. And a plurality of stator teeth 171 projecting inward.
- the stator teeth 171 are formed at equal intervals along the circumferential direction DR1 of the annular yoke portion 176.
- the circumferential end surface arranged in the circumferential direction DR1 of the stator 140 is in contact with the circumferential end surface of another divided stator core 141 adjacent to the divided stator core 141 in the circumferential direction of the stator 140. It touches.
- Slots are formed between the stator teeth 171 of the divided stator cores 141 adjacent in the circumferential direction.
- Coils (U-phase coil 180U, V-phase coil 180V, and W-phase coil 180W) are mounted on split stator core 141 so as to be wound around stator teeth 171 in the slot.
- the coil is attached to the stator teeth 171 of the split stator core 141 with an insulator for ensuring insulation between the split stator core 141 and the coil interposed.
- the split stator core 141 has an outer surface 142 that is the outer surface of the stator 140 in the radial direction DR2.
- the outer surface 142 is formed with a recess 143 in which a part of the central portion of the outer surface 142 in the circumferential direction DR1 is recessed.
- a caulking portion 146 formed on the split stator core 141 in the axial direction of the stator 140 (in the direction perpendicular to the paper surface in FIG. 4) is formed. Due to the formation of the caulking portion 146, the strength of the divided stator core 141 is improved.
- the stator 140 also includes a curved member 151 disposed on the outer peripheral side of the divided stator core 141 disposed in a cylindrical shape. The same number of the divided stator cores 141 and the curved members 151 are provided.
- the plurality of bending members 151 are disposed adjacent to each other in the circumferential direction DR1 of the stator 140.
- the bending member 151 extends along the circumferential direction DR1 of the stator 140.
- the bending member 151 is formed such that the dimension of the bending member 151 in the circumferential direction DR1 is smaller than the dimension of the yoke portion 176 of the split stator core 141 in the circumferential direction DR1.
- the curved member 151 is curved convex toward the outer surface 142.
- the bending member 151 of the first embodiment has a convex portion 154 that is convex toward the outer surface 142 of the split stator core 141 in the vicinity of the center in the circumferential direction DR1.
- a surface 152 of the bending member 151 facing the split stator core 141 is closest to the outer surface 142 of the split stator core 141 in the vicinity of the convex portion 154.
- FIG. 5 is a schematic cross-sectional view showing a state in which the stator 140 according to the first embodiment is housed in the case 190.
- FIG. 5 illustrates a state in which the stator 140 shown in FIG. 3 formed by arranging a plurality of divided stator cores 141 in an annular shape is mounted on a case 190 and is further surrounded by a cover 194.
- one end in the axial direction DR3 of the split stator core 141 arranged in an annular shape contacts the case 190, and the other end in the axial direction DR3 of the split stator core 141 is covered by a cover 194.
- a screw hole 191 is formed in the case 190. Since the bolt 192 is provided through the screw hole 191, the case 190 and the cover 194 are assembled together.
- the case 190 is also formed with an annular groove 193.
- the groove portion 193 is formed on the surface of the case 190 on the side where the stator 140 is mounted.
- the bending member 151 extends in the axial direction DR3 of the stator 140, and one of the axial end portions 155 that is an end portion of the bending member 151 in the axial direction DR3 is disposed in the groove portion 193.
- the bending member 151 is formed to extend in the axial direction DR3 so that the axial end portion 155 does not contact the split stator core 141.
- FIG. 6 is a development view showing the configuration of the structure of the bending member 151 and the connecting member 161.
- the stator 140 further includes a connecting member 161.
- the connecting member 161 connects the plurality of bending members 151 in the circumferential direction DR1.
- the bending member 151 has an axial end 155.
- the connecting member 161 is coupled to only a part of the end portion 155 in the axial direction of the bending member 151, and a gap 162 is formed between the adjacent bending members 151, and the connecting member 161 is connected to the adjacent bending member 151. It is set as the structure which does not prevent a deformation
- the structure shown in FIG. 6 can be obtained, for example, by bending a plate material while punching with a press.
- a bolt 196 is provided so as to penetrate the connecting member 161 coupled to the axial end 155 of the bending member 151 on the side disposed inside the groove 193.
- the bending member 151 is positioned with respect to the divided stator core 141 by providing the bolt 196 through the case 190 and the connecting member 161.
- the cover 194 includes a cylindrical wall portion 195 that surrounds the outer periphery of the stator 140.
- the inner surface of the wall portion 195 faces the outer surface 142 of the divided stator core 141.
- a bending member 151 is disposed between the wall portion 195 and the divided stator core 141.
- the bending member 151 is interposed between the divided stator core 141 and the wall portion 195. As shown in FIG. 4, since the bending member 151 is curved with respect to the circumferential direction DR ⁇ b> 1, the convex portion 154 constituting a part of the bending member 151 comes into contact with the divided stator core 141, and A part contacts the wall 195.
- the portion of the outer surface 142 of the split stator core 141 excluding the recess 143 is formed in an arc shape.
- the inner surface of the cylindrical wall portion 195 is formed in a circular shape concentric with the arc shape.
- the bending member 151 has a curved shape so as to protrude toward the outer surface 142, and when disposed between the split stator core 141 and the wall portion 195, the dimension in the radial direction DR2 is reduced. Deform.
- the bending member 151 is sandwiched between the split stator core 141 and the wall portion 195 in a bent state.
- the bending force of the bending member 151 generates an elastic force in the radial direction DR2 of the stator 140. Therefore, inward stress in the radial direction DR2 acts on the split stator core 141 from the bending member 151. Further, outward stress in the radial direction DR2 acts on the wall portion 195 from the bending member 151.
- the bending member 151 presses the split stator core 141 inside the radial direction DR2, and presses the wall portion 195 outside the radial direction DR2.
- the bending member 151 has a function of a leaf spring that applies an elastic force in both directions of the radial direction DR2. Due to the elastic force of the bending member 151, both the split stator core 141 and the wall portion 195 are pressed and held in the radial direction DR2.
- a bolt 192 is used to fix the case 190 and the cover 194.
- the shrink-fit ring acts only on the radially inner side, so a bolt for fixing the split stator core to the radially outer case is essential.
- the bending member 151 gives a holding force for fixing the stator 140 to the wall portion 195 that is the outer peripheral wall of the radial direction DR2 in addition to the fastening force of the split stator core. Therefore, when the cover 194 is sufficiently fixed to the stator 140 by the elastic force acting on the bending member 151, the rotating electrical machine 2200 does not need to include the fixing bolt 192. In this case, the number of parts of the rotating electrical machine 2200 can be omitted, and bolt fastening for assembling the stator 140 is not required, and the manufacturing process can be simplified.
- the bending member 151 is also formed so that a part of the vicinity of the axial end portion 155 is locally curved with respect to the axial direction DR3, and is curved in the circumferential direction DR1 and the axial direction DR3 which are two orthogonal directions. May be.
- the vicinity of the axial end 155 is curved inward in the radial direction DR2 close to the outer surface 142 of the split stator core 141, so that the assembling property of the bending member 151 can be improved.
- the bending member 151 is fitted into the groove 193 formed in the case 190 shown in FIG. 5, if the vicinity of the axial end 155 of the bending member 151 is curved, the bending member 155 can be easily inserted into the groove 193. It is possible to move it inside.
- FIG. 7 is a schematic diagram showing the stress S and the magnetic flux MF acting on the divided stator core 141.
- the convex portion 154 is accommodated in the concave portion 143 formed in the split stator core 141, as shown in FIG. Since a part of the bending member 151 is accommodated in the recess 143 formed in the outer surface 142, the bending member 151 can be easily positioned with respect to the divided stator core 141 in the circumferential direction DR1 of the stator 140, and the arrangement of the bending member 151 The error in the circumferential direction DR1 can be reduced.
- the connecting member 161 shown in FIGS. 5 and 6 is provided, and the relative position in the circumferential direction DR1 of each bending member 151 is defined. Therefore, positioning of the bending member 151 in the circumferential direction DR1 is further facilitated. Further, in one step of installing one structure in which the plurality of bending members 151 are integrated, the plurality of bending members 151 can be assembled, and the individual bending members 151 are arranged outside the radial direction DR2 of the divided stator core 141. There is no need. Therefore, the stator 140 can be easily manufactured and the manufacturing cost of the stator 140 can be reduced.
- the curved member 151 contacts the center of the outer surface 142 of the divided stator core 141 inside the recess 143 and presses the outer surface 142 to the inside of the stator 140 in the radial direction DR2.
- a compressive stress S directed inward in the radial direction DR2 shown by a white arrow in FIG. 7 acts in the split stator core 141.
- the fastening force of the split stator core 141 can be ensured by the inward compressive stress S acting from the bending member 151 in the radial direction DR2.
- the divided stator core 141 is fixed by the curved member 151 that partially presses a part of the outer surface 142 of the divided stator core 141 in the inner diameter direction, and the cylindrical stator 140 is formed.
- each bending member 151 corresponding to the divided stator cores 141 adjacent to each other in the circumferential direction DR1 are provided such that portions facing the outer surface 142 in the axial direction DR3 of the stator 140 are not coupled to each other. Therefore, each bending member 151 can be bent independently for each divided stator core 141. If each bending member 151 is non-independent, the amount of bending of the bending member 151 may be restricted and the fastening force of the split stator core 141 may be insufficient. However, in this embodiment, the bending member 151 bends independently. Therefore, a compressive stress can be equally applied to each divided stator core 141, and a sufficient fastening force can be ensured.
- the bending member 151 has a plate shape extending in both the circumferential direction DR1 and the axial direction DR3, the rigidity of the bending member 151 in the axial direction DR3 is increased. As a result, the fastening force acting on the split stator core 141 from the curved member 151 can be increased without damaging the curved member 151, so that a larger fastening force of the split stator core 141 can be obtained.
- the curved member 151 contacts only the recess 143 formed at the central portion of the outer surface 142 in the circumferential direction DR1, and the position of the outer surface 142 in the circumferential direction DR1 where the curved member 151 contacts is defined. Therefore, the compressive stress acting on the split stator core 141 has a distribution in the circumferential direction DR1. That is, the compressive stress is the highest near the central portion in the circumferential direction DR1, and the compressive stress is small near the end portion in the circumferential direction DR1.
- stress concentration occurs in the vicinity of the central portion in the circumferential direction DR1, so that although the compressive stress generated in the central portion in the circumferential direction DR1 is large, near the end portion in the circumferential direction DR1. The generated compressive stress is small.
- the compressive stress acting on the split stator core 141 from the curved member 151 is reduced as a whole as compared with the split stator core in which the ring contacts the entire circumferential direction of the conventional outer surface.
- the compressive stress acting on the entire divided stator core 141 is obtained as an integral value of the compressive stress acting on each part of the divided stator core 141.
- the region where the high compressive stress acts is small and the region where the low compressive stress acts is large.
- the compressive stress acting on the split stator core 141 is reduced as a whole.
- the iron loss increases.
- the compressive stress acting on the split stator core 141 increases.
- the iron loss can be reduced.
- a high compressive stress is applied only to a part of the circumferential direction DR1, and the compressive stress acting on the entire split stator core 141 is reduced, so that iron loss generated in the split stator core 141 is reduced. Can be reduced.
- the magnetic flux inside the split stator core 141 reaches the yoke portion 176 from the inside of the radial direction DR2 via the stator teeth 171 and passes through the yoke portion 176 in the circumferential direction DR1. Flows from the circumferential end surface of the yoke portion 176 to another adjacent divided stator core 141. Therefore, in the divided stator core 141, the magnetic flux density becomes small in the vicinity of the central portion in the circumferential direction DR1 where the stress acting from the bending member 151 is the largest.
- the concave portion 143 is formed in the central portion of the outer surface 142 of the divided stator core 141 in the circumferential direction DR1, and the bending member 151 is in contact with only a part of the outer surface 142, the divided stator core 141 is separated from the bending member 151.
- the range in which a large compressive stress is applied is limited to the portion of the divided stator core 141 where the magnetic flux density is low. In the portion where the magnetic flux density is low, the generated iron loss is small even if the acting compressive stress increases.
- FIG. 8 is a diagram illustrating a configuration of the stator according to the second embodiment.
- the stator 140 according to the second embodiment includes a split stator core 141 in which two concave portions 143 are formed on the outer surface 142, and a curved member 151 having two convex portions 154 corresponding to the concave portions 143. This is different from the first embodiment.
- the curved member 151 is in contact with the outer surface 142 only inside the two concave portions 143, and acts on the split stator core 141 in the radial direction DR2 inward direction.
- split stator core 141 of the second embodiment recesses 143 are formed at two locations in circumferential direction DR1 of stator 140, and compressive stress acting on split stator core 141 from bending member 151 is applied at two locations in circumferential direction DR1. .
- the curved member 151 rotates relative to the split stator core 141, and as a result.
- the positioning accuracy of the bending member 151 may decrease.
- stress is applied to the split stator core 141 from the curved member 151 at two locations in the circumferential direction DR1, so that the curved member 151 rotates relative to the split stator core 141.
- the displacement of 151 is suppressed. Therefore, the positioning accuracy of the bending member 151 can be further improved.
- stator 110 rotating shaft, 120 rotor, 140 stator, 141 split stator core, 142 outer surface, 143 concave portion, 146 caulking portion, 151 curved member, 152 surface, 154 convex shape portion, 155 axial end portion, 161 connecting member, 162 gap, 171 stator teeth, 176 yoke part, 190 case, 193 groove part, 194 cover, 195 wall part, 2200 rotating electric machine.
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Abstract
Description
上記ステータにおいて好ましくは、複数の湾曲部材を連結する連結部材をさらに備える。湾曲部材は、軸方向端部を有し、軸方向端部が分割ステータコアに接触しないように配置される。連結部材は、軸方向端部に結合する。
図1は、本発明の実施の形態1に係るロータ120を含む回転電機2200を備えた車両の駆動部の構成を説明するための図である。図1では、本発明に従った車両に搭載される回転電機2200を駆動させるための電気回路を示している。図1を参照して、PCU(パワーコントロールユニット)2700は、コンバータ2710と、インバータ2720と、制御装置2730と、コンデンサC1,C2と、電源ラインPL1~PL3と、出力ライン2740U,2740V,2740Wとを含む。コンバータ2710は、バッテリ3000とインバータ2720の間に接続され、インバータ2720は、出力ライン2740U,2740V,2740Wを介して回転電機2200と接続される。
図8は、実施の形態2のステータの構成を示す図である。実施の形態2のステータ140は、外表面142に二箇所の凹部143が形成された分割ステータコア141と、その凹部143に対応する二箇所の凸形状部154を有する湾曲部材151と、を備える点で、実施の形態1とは異なっている。
Claims (6)
- 略中空円筒状のステータ(140)であって、
前記ステータ(140)の周方向(DR1)に互いに隣接して配置され、前記ステータ(140)の径方向(DR2)外側の外表面(142)を有する、複数の分割ステータコア(141)と、
前記周方向(DR1)に延在し、前記外表面(142)に向かって凸に湾曲する凸形状部(154)を有し、前記外表面(142)に接触し前記ステータ(140)の径方向(DR2)内側へ前記外表面(142)を押圧する、前記分割ステータコア(141)と同数の湾曲部材(151)とを備える、ステータ(140)。 - 前記外表面(142)には凹部(143)が形成されており、
前記湾曲部材(151)は、前記凸形状部(154)が前記凹部(143)に収容され、前記凹部(143)の内側において前記外表面(142)に接触する、請求の範囲第1項に記載のステータ(140)。 - 前記凹部(143)は、前記外表面(142)の前記周方向(DR1)の中央部に形成されている、請求の範囲第2項に記載のステータ(140)。
- 前記湾曲部材(151)は、前記ステータ(140)の軸方向(DR3)に延在する、請求の範囲第2項に記載のステータ(140)。
- 複数の前記湾曲部材(151)を連結する連結部材(161)をさらに備え、
前記湾曲部材(151)は、軸方向端部(155)を有し、前記軸方向端部(155)が前記分割ステータコア(141)に接触しないように配置され、
前記連結部材(161)は、前記軸方向端部(155)に結合する、請求の範囲第4項に記載のステータ(140)。 - 回転可能に設けられた回転シャフト(110)と、
前記回転シャフト(110)に固設されたロータ(120)と、
前記ロータ(120)の周囲に配置された、請求の範囲第1項に記載のステータ(140)とを備える、回転電機(2200)。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/520,312 US9130420B2 (en) | 2010-01-19 | 2010-01-19 | Stator having a plurality of stator core segments and rotating electric machine including same |
PCT/JP2010/050527 WO2011089685A1 (ja) | 2010-01-19 | 2010-01-19 | ステータおよび回転電機 |
EP10843851.6A EP2528195A4 (en) | 2010-01-19 | 2010-01-19 | Stator and rotating electric machine |
CN201080061759.0A CN102742124B (zh) | 2010-01-19 | 2010-01-19 | 定子以及旋转电机 |
JP2011550738A JP5418606B2 (ja) | 2010-01-19 | 2010-01-19 | ステータおよび回転電機 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2010/050527 WO2011089685A1 (ja) | 2010-01-19 | 2010-01-19 | ステータおよび回転電機 |
Publications (1)
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WO2011089685A1 true WO2011089685A1 (ja) | 2011-07-28 |
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PCT/JP2010/050527 WO2011089685A1 (ja) | 2010-01-19 | 2010-01-19 | ステータおよび回転電機 |
Country Status (5)
Country | Link |
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US (1) | US9130420B2 (ja) |
EP (1) | EP2528195A4 (ja) |
JP (1) | JP5418606B2 (ja) |
CN (1) | CN102742124B (ja) |
WO (1) | WO2011089685A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016140172A (ja) * | 2015-01-27 | 2016-08-04 | サンデンホールディングス株式会社 | 電動圧縮機 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5740436B2 (ja) * | 2013-06-14 | 2015-06-24 | 本田技研工業株式会社 | 回転電機のステータコア |
EP3073612B1 (en) * | 2015-03-26 | 2019-10-09 | Skf Magnetic Mechatronics | Stator assembly and magnetic bearing or electric motor comprising such a stator assembly |
JP6479179B2 (ja) * | 2015-06-08 | 2019-03-06 | 三菱電機株式会社 | モータ及び圧縮機 |
WO2019023085A2 (en) * | 2017-07-22 | 2019-01-31 | Abledu Kodzo Obed | ENERGY STORAGE, HYDROGEN AND OXYGEN PRODUCTION USING ION SEPARATORS |
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- 2010-01-19 WO PCT/JP2010/050527 patent/WO2011089685A1/ja active Application Filing
- 2010-01-19 CN CN201080061759.0A patent/CN102742124B/zh not_active Expired - Fee Related
- 2010-01-19 EP EP10843851.6A patent/EP2528195A4/en not_active Withdrawn
- 2010-01-19 JP JP2011550738A patent/JP5418606B2/ja not_active Expired - Fee Related
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JP2016140172A (ja) * | 2015-01-27 | 2016-08-04 | サンデンホールディングス株式会社 | 電動圧縮機 |
WO2016121616A1 (ja) * | 2015-01-27 | 2016-08-04 | サンデンホールディングス株式会社 | 電動圧縮機 |
Also Published As
Publication number | Publication date |
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EP2528195A1 (en) | 2012-11-28 |
CN102742124A (zh) | 2012-10-17 |
US9130420B2 (en) | 2015-09-08 |
CN102742124B (zh) | 2014-09-03 |
JP5418606B2 (ja) | 2014-02-19 |
JPWO2011089685A1 (ja) | 2013-05-20 |
US20120306311A1 (en) | 2012-12-06 |
EP2528195A4 (en) | 2017-01-18 |
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