WO2016199788A1 - ステータ - Google Patents
ステータ Download PDFInfo
- Publication number
- WO2016199788A1 WO2016199788A1 PCT/JP2016/066987 JP2016066987W WO2016199788A1 WO 2016199788 A1 WO2016199788 A1 WO 2016199788A1 JP 2016066987 W JP2016066987 W JP 2016066987W WO 2016199788 A1 WO2016199788 A1 WO 2016199788A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bent
- coil
- stator
- lead wire
- axial direction
- Prior art date
Links
Images
Classifications
-
- 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
- H02K3/28—Layout of windings or of connections between windings
-
- 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
-
- 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
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0435—Wound windings
- H02K15/0442—Loop windings
- H02K15/045—Form wound coils
-
- 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
-
- 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
-
- 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
- H02K15/10—Applying solid insulation to windings, stators or rotors
- H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
Definitions
- the present invention relates to a stator.
- a stator having a coil composed of a plurality of coil units is known.
- Such a stator is disclosed in, for example, Japanese Patent Application Laid-Open No. 2012-125043.
- a coil rod (coil) is formed by a plurality of concentric winding coils (coil units) in which flat conductors are concentrically wound.
- the coil rod has a coil end portion protruding from the axial end surface of the stator core.
- the lead-side coil end portion of the concentric winding coil (the winding start portion or the winding end portion arranged on the lead side (power supply side)) from the radial inner side of the stator core toward the radial outer side, It is configured to be bent.
- the lead side coil end part conducting wire of the concentric winding coil includes a bent part (R-shaped part) and a part from the bent part to the end part.
- the lead-side coil end conductor of the concentric winding coil is axially outer than the apex of the coil end so as not to contact the coil end. It is bent at a location away from the end surface of the core from the apex portion of the coil end portion (see FIGS. 8 and 12 in JP 2012-125043 A).
- the present invention has been made to solve the above-described problems, and one object of the present invention is to provide a stator capable of preventing an increase in axial dimension. .
- a stator includes a stator core having a plurality of slots, and a coil unit including a plurality of coils arranged in the plurality of slots.
- the coil end portion includes a coil end portion protruding from the axial end surface of the stator core, the coil end portion protruding outward in the axial direction and arranged in the circumferential direction, and a plurality of lead wires for supplying power to the coil
- the lead wire portion includes at least an extending portion extending in the axial direction and a bent portion that is bent at least in the radial direction from the axial direction, and at least a part of the bent portion includes the extending portion and the diameter. Between the apexes that are closest to each other in the circumferential direction and are adjacent to each other in the circumferential direction, they are disposed closer to the stator core in the axial direction than the apexes.
- stator core side is more axial than the apex.
- the lead wire portion is bent axially outside the apex of the coil end portion, the lead wire portion is bent axially inside, and accordingly, the axial dimension of the coil end portion is increased accordingly. Can be prevented. As a result, it is possible to prevent the axial dimension of the stator from increasing.
- FIG. 1 is a perspective view of a stator according to an embodiment of the present invention. It is the side view which looked at the coil by one Embodiment of this invention from the radial direction inner side. It is a perspective view of the concentric winding coil by one Embodiment of this invention. It is a side view of the concentric winding coil by one Embodiment of this invention. It is the figure which looked at the concentric winding coil by one Embodiment of this invention from upper direction. It is the elements on larger scale of FIG.
- FIG. 10 is a cross-sectional view taken along line 200-200 in FIG. 9.
- FIG. 10 is a cross-sectional view taken along line 300-300 in FIG. 9.
- It is a schematic diagram of the top part and bending part seen from the circumferential direction.
- It is a schematic diagram of the top part and bending part seen from the radial direction outer side.
- It is a figure for demonstrating the manufacturing method of the stator by one Embodiment of this invention.
- axial direction means a side away from the stator core 10 in the axial direction.
- inner side in the axial direction means a side closer to the stator core 10 in the axial direction.
- the “radially outer side” means a side where the diameter of the stator core 10 is increased in the radial direction.
- inward in the radial direction means a side where the diameter of the stator core 10 is reduced in the radial direction.
- the stator 100 includes a stator core 10 and a coil unit 20 (concentric winding coil 30).
- the concentric coil 30 is an example of the “coil” in the claims.
- the stator core 10 is formed in an annular shape (hollow cylindrical shape).
- the annular stator core 10 includes a stator core formed by combining divided cores.
- An inner diameter side space for accommodating a rotor (not shown) is formed inside the stator core 10 in the radial direction.
- the stator core 10 is formed, for example, by laminating a plurality of insulating coated steel sheets in the axial direction.
- the stator core 10 includes a back yoke 11 formed in an annular shape and a plurality of teeth 12 extending from the back yoke 11 toward the radially inner side.
- the plurality of teeth 12 are provided in the stator core 10 at substantially equal angular intervals in the circumferential direction.
- a slot 13 is formed between adjacent teeth 12.
- the stator core 10 is provided with ears 14 for fixing the stator 100 to a motor case (not shown).
- edge part 14 is formed so that it may protrude outside from the end surface (outer peripheral surface 10a) of the radial direction outer side of the stator core 10.
- a plurality of ear portions 14 are provided in the circumferential direction.
- three ear portions 14 are provided at substantially equal angular intervals.
- the ear portion 14 is provided with a through hole 14a penetrating in the axial direction.
- the stator 100 is fixed to the motor case by fastening a bolt (not shown) to the motor case through the through hole 14a of the ear portion 14.
- the coil unit 20 is composed of a plurality of concentric coils 30 inserted into the plurality of slots 13. Moreover, the coil unit 20 is configured by arranging a plurality of concentric winding coils 30 in the circumferential direction.
- the coil unit 20 is annular and has a hook shape.
- Each concentric coil 30 constitutes one of a U-phase coil, a V-phase coil, and a W-phase coil when stator 100 is applied to a three-phase AC motor.
- the coil unit 20 includes a coil end portion 21 protruding from the axial end surface 10b (see FIGS. 2 and 3) of the stator core 10. Moreover, the coil end part 21 has the coil end part 21a arrange
- the coil end portion 21a disposed on the lead side has a plurality of top portions T1 that protrude outward in the axial direction (Z1 direction side) and are arranged in the circumferential direction. Further, the coil end portion 21 a has a plurality of lead wire portions 34 (lead wire portions 34 of the concentric winding coil 30 described later) for supplying power to the concentric winding coil 30. Moreover, the trough part V is arrange
- the top portion T1 indicates the outermost portion in the axial direction except for the lead wire portion 34 (35) described later in the coil end portion 21a protruding outward in the axial direction from the stator core 10. Further, the plurality of top portions T1 have the same diameter and are arranged in the circumferential direction, and are also arranged in the radial direction. Further, the top portion T1 is included in a portion (a crank portion 32a described later) that offsets the concentric winding coil 30 disposed in the slot 13 adjacent in the circumferential direction in the radial direction.
- the trough portion V is provided in the circumferential direction between the top portions T1 adjacent to each other in the circumferential direction in the coil end portion 21a protruding outward in the axial direction from the stator core 10, and is located on the stator core 10 side (lower than the top portion T1 in the axial direction). ) Refers to the gap part.
- the plurality of troughs V have the same diameter and are arranged in the circumferential direction, and are also arranged in the radial direction.
- the concentric winding coil 30 is formed by winding a rectangular conductive wire having a substantially rectangular cross section. Specifically, the concentric winding coil 30 is formed by winding a rectangular conductive wire into a substantially hexagonal shape by edgewise bending that bends the short cross-section side of the rectangular conductive wire.
- the flat conducting wire is made of a highly conductive metal (for example, copper or aluminum).
- angular part of a flat conducting wire may be chamfered (R process) by the round shape.
- a plurality of concentric coils 30 are arranged in the stator core 10 along the circumferential direction (see FIG. 4).
- the top part T1 is comprised by the upper end part (crank part 32a mentioned later) of the substantially hexagonal concentric winding coil 30.
- the concentric winding coil 30 includes a slot accommodating conducting wire portion 31 accommodated in the slot 13, a lead side coil end conducting wire portion 32 disposed on the lead side (power supply side, Z1 direction side), and a side opposite to the lead side. And a non-lead-side coil end conducting wire portion 33 disposed on the (Z2 direction side).
- the lead-side coil end conducting wire portion 32 includes a crank portion 32a that is formed in a crank shape that is bent stepwise in the radial direction of the stator core 10, and a curved portion that is curved in an arc shape in accordance with the arc shape of the annular stator core 10. 32b. Similar to the lead-side coil end conductor portion 32, the non-lead-side coil end conductor portion 33 also includes a crank portion 33a and a curved portion 33b.
- the crank portions 32a of the plurality of concentric winding coils 30 constitute a plurality of top portions T1 that protrude outward in the axial direction of the coil end portion 21a and are arranged in the circumferential direction. ing.
- a trough V is formed between the top T1 of one concentric coil 30 aligned in the circumferential direction and the top T1 of the other concentric coil 30.
- the top part T1 and the trough part V are alternately arrange
- a lead wire portion 34 that is bent from the radially inner side to the radially outer side (C1 direction side) is provided on one of the winding start portion and the winding end portion of the concentric winding coil 30. It has been. Further, a lead wire portion 35 that is bent radially outward from the outer peripheral side of the concentric winding coil 30 is provided on the other of the winding start portion and the winding end portion of the concentric winding coil 30. Further, the lead wire portion 34 and the lead wire portion 35 are provided in each of the plurality of concentric winding coils 30.
- Each of the plurality of lead wire portions 34 has a bent portion 34a that is bent from the radially inner side (C2 direction side) of the stator core 10 to the radially outer side.
- a rectangular conducting wire (slot accommodating conducting wire portion 31) formed so as to extend along the axial direction (Z direction) is axially formed on the axially outer side (point A 1) of the end surface 10 b of the stator core 10. Folded to intersect. Thereafter, the flat conductive wire is bent again along the axial direction (Z direction) at point A2, and then bent at an angle of approximately 90 degrees from the radially inner side to the radially outer side of the stator core 10 at point A3. It is done. Thereby, the bending part 34a is formed.
- an extended portion 34c extending at least in the axial direction is provided between the slot accommodating conductor portion 31 and the bent portion 34a. Specifically, the extending portion 34c is provided so as to extend outward in the axial direction so as to intersect the Z direction.
- the lead wire portion 34 is on the lead side and extends at least axially outward from the axial end surface 10 b of the stator core 10, and the axial direction from the stator core 10. It has an end side portion 34b that extends at least in the radial direction outside (the end side portion 34b may extend not only in the radial direction but also in the circumferential direction).
- a bent portion 34a that is bent at least in the radial direction from the axial direction so that the extended portion 34c extending in the axial direction is connected to the end side portion 34b extending in the radial direction is formed between the extended portion 34c and the end side portion 34b. Prepare in between.
- the bent portion 34a is from the bending start point to the end point, the bending start point indicates a portion where the extending portion 34c starts to bend at least in the radial direction, and the bending end point of the bent portion 34a is an end portion extending in the radial direction.
- the extending portion 34c extends in the axial direction or the circumferential direction, but does not extend in the radial direction. Therefore, since the extending portion 34c does not extend in the radial direction, it is possible to prevent the radial dimension from being increased while preventing the axial dimension of the stator 100 from increasing.
- the extending portion 34c protrudes in the axial direction at the innermost side in the radial direction or the outermost side in the radial direction among the coil end portions 21a protruding from the stator core 10, and the end portion side portion 34b is axially extended from the top portion T1.
- the outer side extends at least in the radial direction along the plurality of top portions T1 or along the core end surface (axial end surface 10b).
- the edge part side part 34b is spaced apart and arrange
- the edge part side part 34b is extended in parallel with several top part T1 or a core end surface (axial direction end surface 10b) in radial direction.
- At least a part of the bent portion 34a is closest to the extending portion 34c in the radial direction and adjacent to the circumferential direction (D direction, see FIG. 13).
- the matching top parts T1 it is arrange
- the bent portion 34 a is disposed between two top portions T ⁇ b> 1 arranged in the circumferential direction when viewed from the inside in the radial direction. Further, as shown in FIGS. 11 to 13, the bent portion 34a is disposed so as to overlap the top portion T1 when viewed from the circumferential direction. Specifically, the bent portion 34a is arranged so as to overlap the top portion T1 both when viewed from one side in the circumferential direction (see FIG. 11) and from the other side in the circumferential direction (see FIG. 12).
- the extending portion 34c on the innermost diameter side is disposed in the trough portion V on the radially inner side
- the bent portion 34a of the lead wire portion 34 is the top portion on the radially inner side when viewed from the circumferential direction. It arrange
- the bending start position 341a in the bending portion 34a is higher than the top T1 (the height position h of the top T1 from the end surface 10b of the stator core 10) when viewed from the circumferential direction. It is arranged on the side (Z2 direction side).
- the bending part 34a is arrange
- the bent portion 34 a is bent radially outward from the innermost peripheral side of the stator core 10, and between the top portions T ⁇ b> 1 (top portions T ⁇ b> 1 a) located on the innermost peripheral side. Is arranged.
- the bent portion 34a has a corner portion T1b (diameter of the top portion T1 in which the inner portion 342a of the bent portion 34a is disposed on the innermost peripheral side when viewed from the circumferential direction. It is arranged so as to overlap the corner T1b) on the inner side in the direction and on the outer side in the axial direction.
- the bent portion 34a is disposed between the top portions T1 arranged in the circumferential direction in a state of being separated from the top portion T1. Specifically, when viewed from the outside in the axial direction, the bent portion 34a is disposed between the top portions T1 (the valley portions V) in a state separated from the top portions T1 aligned in the circumferential direction (a state having a gap S). . In addition, the bending part 34a is arrange
- the bent portion 34a is formed by flat-wise bending that bends the long side of the cross section of the flat wire.
- the slot accommodating conducting wire portion 31, the lead side coil end conducting wire portion 32, and the non-leading side coil end conducting wire portion 33 are edgewise that bends the short side of the cross-section of the rectangular conducting wire. It is formed by bending.
- the flat lead wire is bent by edgewise bending at points A1 and A2, and then bent at a point A3 from the radially inner side to the radially outer side by flatwise bending, whereby a bent portion 34a is formed. Yes.
- the lead wire portion 34 is separated from the top portion T1 so as to be continuous from the bent portion 34a arranged in a state of being separated from the top portion T1 (distance L, In the separated state (see FIG. 13), it has an end portion 34b that extends radially outward.
- the end portion 34b has a portion 341b extending so as to intersect in the circumferential direction when viewed from the axial direction (so as to intersect at an angle of less than 90 degrees), and a radius formed by bending a flat wire at a point A4. And a connection portion 342b extending along the direction.
- connection portion 342b is an example of a “tip portion”.
- the distance L between the end portion side portion 34b and the top portion T1 is smaller than the radius of curvature r inside the bent portion 34a. Accordingly, by bending the lead wire portion 34 from the radially inner side to the radially outer side, the bent portion 34a is disposed between the top portions T1 aligned in the circumferential direction so as to overlap the top portion T1 when viewed from the circumferential direction. .
- the lead wire portion 35 has a rectangular conductor wire (slot housing conductor portion 31) formed so as to extend along the axial direction (Z direction). B1) is bent along the circumferential direction. Thereafter, the flat conducting wire is bent again along the axial direction (Z direction) at point B2 and then bent radially outward at an angle of approximately 90 degrees at point B3. Thereby, the connection part 35a is formed.
- each connection portion 342 b of the plurality of lead wire portions 34 is disposed outside the top portion T ⁇ b> 1 (T ⁇ b> 1 c) disposed on the outermost periphery when viewed from the axial direction. It is configured to be. Moreover, each connection part 35a of the some lead wire part 35 is comprised so that it may be arrange
- connection portion 342 b and the connection portion 35 a are connected (welded) on the radially outer side of the stator core 10 in a state where the connection portion 342 b and the connection portion 35 a are arranged in the circumferential direction.
- the concentric winding coil 30 includes a connecting portion 342b of the lead wire portion 34 on the radially inner side of one of the plurality of concentric winding coils 30, and a connecting portion 35a of the lead wire portion 35 on the other radially outer side. Is a continuous coil that needs to be connected (welded).
- the bent portion 34a is located closer to the stator core 10 in the axial direction than the top portion T1 between the top portions T1 that are closest to the extending portion 34c in the radial direction and are adjacent in the circumferential direction.
- the lead wire portion 34 is bent at the inner side in the axial direction as compared with the case where the bent portion 34a is bent at a position away from the outer side in the axial direction from the apex T1 of the coil end portion 21a. It can prevent that the dimension of the axial direction of the part 21a becomes large. As a result, it is possible to prevent the axial dimension of the stator 100 from increasing.
- the position of the bent portion 34 a of the lead wire portion 34 is a rate-determining factor for the dimension of the stator 100 in the axial direction. That is, since the end portion side portion 34b of the lead wire portion 34 is brought closer to the axial end surface 10b side of the stator core 10 depending on the bending method (position) of the bent portion 34a, the dimension in the axial direction of the stator 100 is increased. In order to prevent this, it is particularly important to lower the position of the bent portion 34a (closer to the end face 10b side).
- the end portion side portion 34b of the lead wire portion 34 is arranged in the axial direction of the stator core 10.
- the axial dimension of the stator 100 is prevented from becoming large by approaching the end face 10b side.
- the axial dimension of the coil end portion 21a is prevented from becoming large, the entire length of the flat conductor wire forming the concentric winding coil 30 is shortened, and accordingly, the amount of use of the flat conductor wire is reduced accordingly. be able to. Further, since the copper loss can be reduced by shortening the overall length of the flat wire, it is possible to improve the efficiency (ratio of mechanical output to input power) of the motor in which the stator 100 of the present embodiment is used.
- the circumferential width portion 34d of the bent portion 34a is disposed so as not to overlap the top portion T1 when viewed from the inside in the radial direction.
- at least one part of the bending part 34a can be easily arrange
- the coil end portion 21a has the valley portion V arranged between the top portions T1 arranged in the circumferential direction, and the bent portion 34a is arranged in the valley portion V.
- bending of the lead wire portion 34 is started in the valley portion V on the inner side in the axial direction from the top portion T1, so that the bending portion 34a can be easily arranged in the circumferential direction so as to overlap the top portion T1 when viewed from the circumferential direction. It can arrange
- the bent portion 34a is bent radially outward from the innermost peripheral side of the stator core 10 and is disposed between the top portions T1 located on the innermost peripheral side. Thereby, even when the bending of the lead wire portion 34 is started at a height position lower than the height position h of the top portion T1, the lead wire portion 34 is prevented from contacting the bent portion 34a and the top portion T1. Can be bent radially outward.
- the bent portion 34a is arranged between the top portions T1 arranged in the circumferential direction in a state of being separated from the top portion T1. Accordingly, even when the bent portion 34a is arranged so as to overlap the top portion T1 between the top portions T1 arranged in the circumferential direction, the bent portion 34a and the top portion T1 can be prevented from coming into contact with each other. It is possible to prevent the flat wire from being damaged due to the contact with the top portion T1.
- the lead wire portion 34 extends outward in the radial direction in a state of being separated from the top portion T1 so as to be continuous from the bent portion 34a disposed in a state of being separated from the top portion T1. It has an end side portion 34b. As a result, both the bent portion 34a and the end portion side portion 34b are separated from the top portion T1, so that it is more effective that the flat wire is damaged due to the contact between the lead wire portion 34 and the top portion T1. Can be prevented.
- the distance L between the end side portion 34b and the apex T1 is set to be smaller than the radius of curvature r inside the bent portion 34a. Accordingly, the axial dimension of the entire coil end portion 21a can be suppressed by arranging the bent portion 34a between the top portions T1 arranged in the circumferential direction so as to overlap the top portion T1 when viewed from the circumferential direction. it can.
- the portion 341b of the end portion side portion 34b that is disposed on the outer side in the axial direction of the top portion T1 is disposed so as to extend substantially linearly.
- the dimension of this part 341b can be made small compared with the case where the part 341b of the edge part side part 34b is formed in shapes (bent shape, curved shape, etc.) other than substantially linear shape.
- connection portions 342b of the plurality of lead wire portions 34 are disposed outside the top portion T1 disposed on the outermost periphery when viewed from the axial direction.
- the connection operation (welding operation) of the connection portion 342b of the lead wire portion 34 can be performed on the outer peripheral side of the stator core 10 which is a relatively wide space.
- the connection work (welding work) of the connection part 342b can be performed while avoiding interference between the connection part 342b and other parts.
- the concentric winding coil 30 is formed by winding a flat wire, and the bending portion 34a is flatwise bent to bend the long side of the cross section of the flat wire. To form.
- the bending part 34a is formed by flatwise bending which is relatively easy to bend compared to edgewise bending, the formation of the bending part 34a can be facilitated.
- the slot accommodating conductor portions 31 of all the concentric winding coils 30 constituting the ring-shaped coil assembly are pressed to the outer diameter side. Accordingly, all the concentric winding coils 30 are pushed out radially from the inner diameter side to the outer diameter side, and each concentric winding coil 30 is mounted on the stator core 10.
- the lead wire portion 34 of each concentric winding coil 30 is bent. This bending process is performed with the tip of the lead wire portion 34 on the inner diameter side of one of the concentric winding coils 30 (the connecting portion 342b) of the two concentric winding coils 30 arranged at a predetermined distance in the circumferential direction.
- connection portion 35a In order to connect the tip (connection portion 35a) of the lead wire portion 35 on the outer diameter side of the other concentric winding coil 30, the lead wire portion 34 on the inner diameter side straddles the lead side coil end conducting wire portion 32. It is performed so as to cross radially outward.
- the lead wire portion 34 on the inner diameter side has an extending portion 34c, a bent portion 34a, a portion 341b, and a connecting portion 342b formed in a substantially concentric circle before bending by a stator manufacturing apparatus (not shown). It is formed (FIG. 15A).
- the lead wire portion 34 on the inner diameter side is first formed by a stator manufacturing apparatus (not shown) from the bent portion 34a with a bent portion 34a (a portion surrounded by a broken line in FIG. 15B) extending in the substantially axial direction as a fulcrum.
- the portion (specifically, the portion 341b and the connecting portion 342b) positioned on the distal end side is flatwise bent so as to fall outward in the radial direction (FIG. 15B).
- the bent portion A1 the portion surrounded by the broken line in FIG. 15C as a fulcrum
- the portions located on the tip side of the bent portion A1.
- the portion 341b and the connecting portion 342b that is, the entire inner diameter side lead wire portion 34
- at least a part of the bent portion 34a is disposed in the valley portion V closest to the extending portion 34c in the radial direction (FIGS. 13 and 14).
- a concentric coil made of a rectangular wire is shown, but the present invention is not limited to this.
- the coil may be formed of a round wire or a conducting wire having an elliptical cross section as the conducting wire.
- the coil needs to be connected (welded) to the radially inner lead wire portion of one of the plurality of concentric winding coils and the other radially outer lead wire portion.
- the coil is a wave-wound coil 50 (continuous coil) in which one of the plurality of coils needs to be connected (welded) to the radially inner lead wire portion and the other radially outer lead wire portion. (See FIG. 16).
- the wave winding coil 50 includes a slot accommodating portion 51a, 51b and 51c accommodated in different slots 13 and one axial side connecting the slot accommodating portions 51a and 51b. Coil end portion 52a and the other coil end portion 52b in the axial direction connecting the slot accommodating portions 51b and 51c. That is, the wave winding coil 50 is formed without joining one conductor wire 60 by welding or the like.
- the coil end portions 52a and 52b are provided with offset portions 53a and 53b for offsetting the width of one conductor wire 60 in the radial direction of the stator, respectively.
- the wave winding coil 50 is an example of the “coil” in the claims.
- a concentric coil formed by winding a rectangular conductor wire a plurality of times is used, but the present invention is not limited to this.
- a coil formed by winding a flat conductive wire (or a conductive wire other than the flat conductive wire) once may be used.
- the bent portion is arranged between the top portions located on the innermost peripheral side, but the present invention is not limited to this.
- the bent part may be arranged between the top parts arranged on the outer peripheral side rather than the top part located on the innermost circumference side.
- the edge part side part (part 341b, refer FIG. 9) which continues from a bending part cross
- the example provided is shown, this invention is not limited to this.
- the end side portion continuous from the bent portion may be provided so as to be orthogonal to the circumferential direction.
- the bent portion is bent at an angle of approximately 90 degrees from the radially inner side to the radially outer side is shown, but the present invention is not limited to this.
- the bent portion may be bent at an angle larger than 90 degrees or an angle smaller than 90 degrees so as not to contact the top.
- connection part of one lead wire part and the connection part of another lead wire part are connected (welded) in the radial direction outer side of a stator core among several concentric winding coils.
- a connecting portion of one lead wire portion of a plurality of concentric winding coils and a connecting portion of another lead wire portion may be connected (welded) inside the stator core in the radial direction.
- the extending portion on the innermost diameter side is arranged in the trough on the radially inner side
- the extended part on the outermost diameter side may be arranged in a trough on the radially outer side.
- the bent portion of the lead wire portion is disposed in the valley portion so as to overlap the top portion on the radially outer side when viewed from the circumferential direction, and the circumferential width portion of the bent portion does not overlap the top portion when viewed from the radially outer side.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
(ステータの構造)
図1~図14を参照して、本実施形態によるステータ100の構造について説明する。なお、この明細書において、「軸方向」、「径方向」、「周方向」とは、ステータコア10を基準とした方向を意味する。また、「軸方向外側」とは、軸方向でステータコア10から離れる側を意味する。また、「軸方向内側」とは、軸方向でステータコア10に近づく側を意味する。また、「径方向外側」とは、径方向でステータコア10の径が大きくなる側を意味する。また、「径方向内側」とは、径方向でステータコア10の径が小さくなる側を意味する。
図4に示すように、コイルユニット20は、複数のスロット13に挿入される複数の同芯巻コイル30から構成されている。また、コイルユニット20は、同芯巻コイル30が周方向に複数配置されることにより構成されている。コイルユニット20は、円環状でかつ籠状を有する。なお、各々の同芯巻コイル30は、ステータ100が3相交流モータに適用される場合には、U相コイル、V相コイルおよびW相コイルのいずれかを構成する。
図5~図7に示すように、同芯巻コイル30は、断面が略矩形形状の平角導線が巻回されることにより形成されている。具体的には、同芯巻コイル30は、平角導線の断面短辺側を折り曲げるエッジワイズ曲げにより、平角導線が略6角形形状に巻回されることにより形成されている。平角導線は、導電性の高い金属(たとえば、銅やアルミニウムなど)により形成されている。なお、平角導線の断面角部は、丸形形状に面取り(R加工)されていてもよい。また、同芯巻コイル30は、ステータコア10に周方向に沿って複数配置(図4参照)されている。なお、略6角形形状の同芯巻コイル30の上端部(後述するクランク部分32a)により、頂部T1が構成されている。
複数のリード線部34は、それぞれ、ステータコア10の径方向内側(C2方向側)から径方向外側に折り曲げられる折り曲げ部34aを有する。具体的には、軸方向(Z方向)に沿って延びるように形成されている平角導線(スロット収容導線部31)が、ステータコア10の端面10bの軸方向外側(A1点)において、軸方向に交差するように折り曲げられる。その後、平角導線は、A2点において、再び、軸方向(Z方向)に沿うように折り曲げられた後、A3点において、ステータコア10の径方向内側から径方向外側に、略90度の角度で折り曲げられる。これにより、折り曲げ部34aが形成される。
図5に示すように、リード線部35は、軸方向(Z方向)に沿って延びるように形成されている平角導線(スロット収容導線部31)が、ステータコア10の端面10bの軸方向外側(B1点)において、周方向に沿うように折り曲げられる。その後、平角導線は、B2点において、再び、軸方向(Z方向)に沿うように折り曲げられた後、B3点において、径方向外側に、略90度の角度で折り曲げられる。これにより、接続部分35aが形成される。
本実施形態では、以下のような効果を得ることができる。
図15を参照して、本実施形態によるステータ100の製造方法について説明する。
なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更(変形例)が含まれる。
10b 端面
13 スロット
20 コイル
21a コイルエンド部
30 同芯巻コイル(コイル)
34 リード線部
34a 折り曲げ部
34b 端部側部分
34c 延設部
34d 周方向幅部
50 波巻コイル
100 ステータ
341b (リード線部の)部分
342b (リード線部の)先端部
L 距離
r 曲率半径
T1 頂部
V 谷部
Claims (8)
- 複数のスロットを有するステータコアと、
前記複数のスロットに配置される複数のコイルから構成されるコイルユニットとを備え、
前記コイルユニットは、前記ステータコアの軸方向端面から突出するコイルエンド部を含み、
前記コイルエンド部は、軸方向外側に突出するとともに周方向に並んで設けられる複数の頂部と、前記コイルに電力を供給するための複数のリード線部と、を有し、
前記リード線部は、少なくとも軸方向に延びる延設部と、少なくとも軸方向から径方向に折り曲げられる折り曲げ部とを含み、前記折り曲げ部の少なくとも一部は、前記延設部と径方向に最も近く、周方向に隣り合う前記頂部間において、前記頂部よりも軸方向の前記ステータコア側に配置されている、ステータ。 - 前記リード線部の折り曲げ部の周方向幅部が、径方向から見て前記頂部と重ならないように配置されている、請求項1に記載のステータ。
- 前記折り曲げ部は、前記ステータコアの最内周側から径方向外側に折り曲げられるとともに、最内周側に位置する前記頂部の間に配置されている、請求項1または2に記載のステータ。
- 前記折り曲げ部は、前記頂部と離間した状態で、周方向に並ぶ前記頂部の間に配置されている、請求項1~3のいずれか1項に記載のステータ。
- 前記リード線部は、前記頂部と離間した状態で配置される前記折り曲げ部から連続するように、前記頂部と離間した状態で、径方向外側に延びる端部側部分をさらに有し、
前記端部側部分と前記頂部との間の距離は、前記折り曲げ部の内側の曲率半径よりも小さい、請求項4に記載のステータ。 - 前記端部側部分のうちの、前記頂部の軸方向外側に配置される部分は、略直線状に延びるように配置されている、請求項5に記載のステータ。
- 前記複数のリード線部のそれぞれの先端部は、軸方向から見て、最外周に配置される前記頂部よりも外側に配置されるように構成されている、請求項1~6のいずれか1項に記載のステータ。
- 前記コイルは、平角導線が巻回されることにより形成されており、
前記折り曲げ部は、平角導線の断面長辺側を折り曲げるフラットワイズ曲げにより形成されている、請求項1~7のいずれか1項に記載のステータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017523657A JP6516004B2 (ja) | 2015-06-12 | 2016-06-08 | ステータ |
CN201680030375.XA CN107615622B (zh) | 2015-06-12 | 2016-06-08 | 定子 |
US15/563,230 US10892656B2 (en) | 2015-06-12 | 2016-06-08 | Stator |
EP16807494.6A EP3276798B1 (en) | 2015-06-12 | 2016-06-08 | Stator |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-119214 | 2015-06-12 | ||
JP2015119214 | 2015-06-12 | ||
JP2015231410 | 2015-11-27 | ||
JP2015-231410 | 2015-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016199788A1 true WO2016199788A1 (ja) | 2016-12-15 |
Family
ID=57503970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/066987 WO2016199788A1 (ja) | 2015-06-12 | 2016-06-08 | ステータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US10892656B2 (ja) |
EP (1) | EP3276798B1 (ja) |
JP (1) | JP6516004B2 (ja) |
CN (1) | CN107615622B (ja) |
WO (1) | WO2016199788A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7524532B2 (ja) | 2019-11-29 | 2024-07-30 | 株式会社アイシン | 平角線成形装置、平角線成形方法、及び平角線成形システム |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10874513B2 (en) * | 2018-02-12 | 2020-12-29 | 4C Medical Technologies, Inc. | Expandable frames and paravalvular leak mitigation systems for implantable prosthetic heart valve devices |
GB2589355A (en) | 2019-11-28 | 2021-06-02 | Rolls Royce Plc | Stator winding arrangement |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012137273A1 (ja) * | 2011-04-01 | 2012-10-11 | トヨタ自動車株式会社 | 回転電機のステータ及びその製造方法並びに製造装置 |
JP2012249344A (ja) * | 2011-05-25 | 2012-12-13 | Toyota Motor Corp | 同芯カセット式回転電機ステータ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4301334B2 (ja) * | 2007-10-19 | 2009-07-22 | トヨタ自動車株式会社 | 回転電機 |
JP5195403B2 (ja) | 2008-12-25 | 2013-05-08 | トヨタ自動車株式会社 | ステータ、及びコイル籠 |
WO2012049759A1 (ja) | 2010-10-14 | 2012-04-19 | トヨタ自動車株式会社 | モータ |
JP5560176B2 (ja) * | 2010-12-08 | 2014-07-23 | トヨタ自動車株式会社 | モータ及びモータ製造方法 |
CN103503278B (zh) | 2011-04-05 | 2016-02-24 | 丰田自动车株式会社 | 定子及定子制造方法 |
JP2013005541A (ja) | 2011-06-14 | 2013-01-07 | Toyota Motor Corp | バスバーの成形方法、バスバー |
JP6033582B2 (ja) | 2012-06-22 | 2016-11-30 | アイシン・エィ・ダブリュ株式会社 | ステータおよびステータの製造方法 |
US10250092B2 (en) * | 2013-08-26 | 2019-04-02 | Mitsubishi Electric Corporation | Rotary electric machine |
-
2016
- 2016-06-08 US US15/563,230 patent/US10892656B2/en active Active
- 2016-06-08 EP EP16807494.6A patent/EP3276798B1/en active Active
- 2016-06-08 CN CN201680030375.XA patent/CN107615622B/zh active Active
- 2016-06-08 WO PCT/JP2016/066987 patent/WO2016199788A1/ja active Application Filing
- 2016-06-08 JP JP2017523657A patent/JP6516004B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012137273A1 (ja) * | 2011-04-01 | 2012-10-11 | トヨタ自動車株式会社 | 回転電機のステータ及びその製造方法並びに製造装置 |
JP2012249344A (ja) * | 2011-05-25 | 2012-12-13 | Toyota Motor Corp | 同芯カセット式回転電機ステータ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7524532B2 (ja) | 2019-11-29 | 2024-07-30 | 株式会社アイシン | 平角線成形装置、平角線成形方法、及び平角線成形システム |
Also Published As
Publication number | Publication date |
---|---|
JP6516004B2 (ja) | 2019-05-22 |
EP3276798A4 (en) | 2018-04-25 |
CN107615622A (zh) | 2018-01-19 |
JPWO2016199788A1 (ja) | 2017-12-21 |
CN107615622B (zh) | 2021-09-10 |
US10892656B2 (en) | 2021-01-12 |
EP3276798B1 (en) | 2019-10-09 |
EP3276798A1 (en) | 2018-01-31 |
US20180091013A1 (en) | 2018-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10476337B2 (en) | Stator | |
US20150123503A1 (en) | Stator | |
JP4636192B2 (ja) | バスリング、及びその取付構造 | |
US20100295405A1 (en) | Motor | |
JP6638629B2 (ja) | 回転電機のステータ | |
WO2016199788A1 (ja) | ステータ | |
US11336145B2 (en) | Motor | |
US11063487B2 (en) | Stator | |
JP2018117468A (ja) | スロット絶縁紙および回転電機のステータ | |
JP5370245B2 (ja) | 回転電機の固定子の製造方法 | |
US10566867B2 (en) | Stator and method of manufacturing stator | |
US20180115211A1 (en) | Rotary electric machine | |
JP6274476B2 (ja) | 電機子、電機子の製造方法および回転電機 | |
US20150372551A1 (en) | Structure of stator | |
US20190214874A1 (en) | Stator | |
JP6093684B2 (ja) | 回転電機の固定子及びこれを備えた回転電機 | |
JP5910363B2 (ja) | 回転電機の固定子 | |
JP7516862B2 (ja) | 電機子の製造方法 | |
JP7371506B2 (ja) | 電機子の製造方法及び電機子 | |
JP2014017914A (ja) | 回転電機用ステータ | |
WO2024069695A1 (ja) | 回転電機のステータ | |
JP2020202634A (ja) | 回転電機に用いられる固定子 | |
JP2015119535A (ja) | 回転電機ステータ | |
JP2014135849A (ja) | 回転電機のステータ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16807494 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017523657 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15563230 Country of ref document: US |
|
REEP | Request for entry into the european phase |
Ref document number: 2016807494 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |