WO2016157410A1 - 回転電機 - Google Patents
回転電機 Download PDFInfo
- Publication number
- WO2016157410A1 WO2016157410A1 PCT/JP2015/060130 JP2015060130W WO2016157410A1 WO 2016157410 A1 WO2016157410 A1 WO 2016157410A1 JP 2015060130 W JP2015060130 W JP 2015060130W WO 2016157410 A1 WO2016157410 A1 WO 2016157410A1
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- WO
- WIPO (PCT)
- Prior art keywords
- axial direction
- stator
- connection
- circumferential
- extension
- Prior art date
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Classifications
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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
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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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
- H02K3/18—Windings for salient poles
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
-
- 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
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
Definitions
- the present invention relates to a rotating electrical machine such as an electric motor or a generator, and more particularly to a connection member for transmitting and receiving electric power to a stator winding.
- connection wiring and coil expands and contracts due to fluctuations in the temperature of the connection wiring and coil. There is a possibility that the connection state between the wiring and the end of the coil is applied, and the connection state deteriorates and the bonding strength decreases.
- connection wiring which increases the size and weight of the connection wiring.
- displacement due to the excitation force or thermal stress during vibration of the connection wiring increases, so the stress acting on the connection between the connection wiring and the end of the coil increases, the connection state deteriorates, and the bonding strength decreases. There was a possibility of decline.
- motors and generators mounted on hybrid electric vehicles are required to operate in a wide temperature range from around 150 ° C to around -40 ° C.
- the displacement due to temperature fluctuations becomes even greater, so the stress acting on the connection between the connection wiring and the end of the coil increases, and the connection state Deteriorated, the bonding strength decreased, and in the worst case, there was a possibility of disconnection.
- a wiring stress relaxation part is provided in the vicinity of the connection part of the connection wiring with the coil end, and the displacement of the connection wiring or the end of the coil due to temperature fluctuation or vibration excitation force Has been proposed to suppress the deterioration of the connection state between the connection wiring and the end of the coil and the decrease in the bonding strength (for example, see Patent Document 1).
- the stress relaxation portion for wiring is configured by reducing the thickness in the vicinity of the connection with the end of the coil of the connection wiring or by reducing the width. Therefore, there is a problem that the cross-sectional area of the wiring stress relaxation portion configured as described above is small, and cannot be adapted for use in increasing current.
- Patent Document 1 has a problem in that the axial dimension cannot be reduced because the connection wiring and the end of the coil are connected axially outward of the coil end. It was.
- the present invention has been made to solve the above-described problem, and can appropriately reduce the current in the radial direction and the circumferential direction without reducing the energization cross-sectional area, and can be appropriately used for increasing the current.
- the local bending process such as a letter shape is not required, the workability is improved, the reduction of stress relaxation effect due to work hardening can be suppressed, and the connection wiring is arranged on the outer diameter side or inner diameter side of the coil group in the axial direction. It is an object of the present invention to obtain a rotating electrical machine that can be reduced in size and can suppress deterioration of the connection state and connection strength of a connection portion between a connection wiring and a coil terminal due to an excitation force or thermal stress.
- the rotor and the plurality of teeth protrude radially inward from the inner peripheral surface of the annular back yoke portion, respectively, and the stator cores arranged in the circumferential direction, and A plurality of coils having a pair of coil terminals attached to the stator core and projecting axially from the stator core, and arranged coaxially with the rotor so as to surround the rotor And a connection member for transmitting and receiving electric power to the plurality of coils.
- the connecting member is formed in a ring shape, and is arranged on one side in the axial direction of the stator and on the outer diameter side of the plurality of coils, or on one side in the axial direction of the stator and on the inner diameter side of the plurality of coils.
- An insulating holder formed in a plurality of concentric shapes with an opening on one side in the axial direction, and a plurality of strip-like conductive members respectively housed in the plurality of grooves and extending in the circumferential direction, respectively.
- the insulating holder is formed in a belt-like body having a rectangular cross section and extends from a side end portion on one side in the axial direction of each of the plurality of belt-like conductive members, and the longitudinal direction of the rectangular cross section is parallel to the axial direction.
- the one side in the axial direction of the insulating holder is A circumferentially extending portion extending in the circumferential direction in parallel with the conductive member; and an end opposite to the bent portion extending in a radial direction from the end of the circumferentially extending portion on the opposite side to the band-shaped conductive member via a bent portion A radial extension portion connected to the coil terminal to be connected.
- the connecting member is formed in a ring shape and is provided on one side in the axial direction of the stator and on the outer diameter side of the plurality of coils, or on one side in the axial direction of the stator and on the inner diameter side of the plurality of coils. Since it is arranged, the axial dimension of the rotating electrical machine can be reduced.
- connection wiring is constructed by connecting the circumferential extension part and the radial extension part with a bending part, and the longitudinal direction of the cross-sectional rectangle is parallel to the axial direction of the rotating electrical machine, so displacement due to excitation force or thermal stress is connected Absorbing by elastic deformation of the wiring, it is possible to suppress the deterioration of the connection state and the connection strength of the connection portion between the connection wiring and the coil terminal.
- it is not necessary to perform local processing such as a V-shape on the connection wiring so that the workability is improved and the reduction of the stress relaxation effect due to work hardening can be suppressed.
- positioned It is a principal part top view explaining the strip shape of the strip
- FIG. 1 is a side sectional view showing a rotating electrical machine according to Embodiment 1 of the present invention
- FIG. 2 is a perspective view showing a stator in the rotating electrical machine according to Embodiment 1 of the present invention
- FIG. 3 is an embodiment of the present invention.
- FIG. 4 is a perspective view showing a stator provided with a connection member in a rotating electrical machine according to Embodiment 1
- FIG. 4 is a cross-sectional view showing the stator provided with a connection member in a rotating electrical machine according to Embodiment 1 of the present invention
- FIG. 5 is a cross-sectional view of the main part showing the periphery of the connecting member of the stator where the connecting member is provided in the rotating electrical machine according to the first embodiment of the present invention
- FIG. 6 is the same in the rotating electrical machine according to the first embodiment of the present invention.
- FIG. 7 is a main part perspective view showing the periphery of the connecting member of the stator in which the connecting member is arranged
- FIG. 7 is a main part plane for explaining the punched shape of the strip-like conductive member and the connection wiring in the rotary electric machine according to Embodiment 1 of the present invention.
- FIG. 8 and 9 are diagrams for explaining the stress relaxation operation in the rotary electric machine according to Embodiment 1 of the present invention.
- a rotating electrical machine 100 includes a housing 1 having a bottomed cylindrical frame 2 and an end plate 3 that closes an opening of the frame 2, and a stator that is inserted into and secured to the cylindrical portion of the frame 2. 10 and a rotor 5 fixed to a rotating shaft 6 rotatably supported on a bottom portion of the frame 2 and an end plate 3 via a bearing 4 and rotatably disposed on an inner peripheral side of the stator 10. And a connecting member 20 for transmitting and receiving electric power to the stator 10.
- the rotor 5 is fixed to a rotating shaft 6 inserted so as to penetrate the shaft center position, and the rotor 5 is embedded in the outer peripheral surface side of the rotor core 7 and arranged at an equiangular pitch in the circumferential direction.
- a permanent magnet type rotor comprising a permanent magnet 8 constituting a magnetic pole.
- the stator 10 includes a stator core 11 and a stator winding 12 attached to the stator core 11.
- the stator core 11 includes an annular back yoke portion 11a and twelve teeth 11b that protrude radially inward from the inner peripheral surface of the back yoke portion 11a and are arranged at equiangular pitches in the circumferential direction.
- the stator winding 12 includes twelve coils 13 wound in concentrated winding around each of the teeth 11b. The coil 13 is produced by winding a conductor wire around the teeth 11b and a pair of insulators 14 disposed at both ends of the teeth 11b in the axial direction.
- a pair of coil terminal 13a which is the both ends of a conductor wire protrudes in parallel with an axial direction from the outer diameter side of the coil 13 to the axial direction one side of the stator 10 on both sides of the teeth 11b.
- the 24 coil terminals 13 a protrude from the outer diameter side of the coil 13 to one side in the axial direction and are arranged in the circumferential direction.
- the pair of coil terminals 13a protrudes from the outer diameter side of the coil 13 to one side in the axial direction of the stator 10, but the pair of coil terminals 13a extends from the inner diameter side of the coil 13 to the one side in the axial direction of the stator 10.
- One coil terminal 13a projects from the outer diameter side of the coil 13 to one axial side of the stator 10, and the other coil terminal 13a projects from the inner diameter side of the coil 13 to one axial direction of the stator 10. May protrude.
- a wire material having good electrical conductivity such as a copper wire or an aluminum wire coated with insulation is used.
- the connecting member 20 is made of a resin material such as nylon in a ring shape, and is arranged so that the four grooves 21a are housed in the concentric circles and the four grooves 21a, respectively, and extend in the circumferential direction.
- the strip-shaped conductive member 22 provided and the coil terminal of the strip-shaped conductive member 22 extending from the side end portion on the opening side of the groove 21a to the outside of the groove 21a and extending outside the holder 21 in the circumferential direction.
- Connection wiring 23 connected to 13a.
- the holder 21 has an inner diameter slightly larger than the inner diameter of the back yoke portion 11a, and is disposed on one axial end surface of the back yoke portion 11a to avoid interference with the coil 13.
- connection wiring 23 is formed by stamping integrally with the belt-like conductive member 22 from a conductive plate having good electrical conductivity such as copper or aluminum by press molding or the like, and then bending.
- the connection wiring 23 punched integrally with the strip-shaped conductive member 22 from the conductor plate includes a connecting portion 24 projecting in the width direction from a side end portion on one side in the width direction of the strip-shaped conductive member 22, A main body portion 25 extending in the length direction of the strip-shaped conductive member 22 in parallel with the strip-shaped conductive member 22 from the protruding end of the connecting portion 24.
- the circumferential extension portion 26 and the radial extension portion 27 are bent at a substantially right angle with a plane formed by the long sides of the cross-sectional rectangle of the main body portion 25 as an inner diameter surface. It is formed.
- a connecting portion between the circumferential extension 26 and the radial extension 27 is a bent portion 28.
- the connecting member 20 configured as described above is configured such that the opening of the groove 21 a is directed to one side in the axial direction of the stator 10 and the shaft of the back yoke portion 11 a of the stator core 11. It is arrange
- connection wiring 23 extends in the circumferential direction and the radial direction on the outer side in the axial direction of the holder 21 in a posture in which the longitudinal direction of the rectangular cross section is parallel to the axial direction.
- twelve coils 13 are repeatedly arranged in the order of the U phase, the V phase, and the W phase in the circumferential direction, and the strip-shaped conductive member 22 housed in the innermost groove 21a is connected to the strip-shaped conductive for neutral point connection.
- the band-shaped conductive members 22 housed in the remaining three grooves 21a are the band-shaped conductive members for the U phase, the V phase, and the W phase, respectively.
- the twelve connecting wires 23 are integrally formed on the belt-like conductive member 22 for neutral point connection, and the belt-like conductive members 22 for U phase, V phase, and W phase each have 4
- the book connection wiring 23 is integrally formed.
- each coil 13 is connected to the belt-like conductive member 22 for neutral point connection via the connection wiring 23.
- the other coil terminals 13 a of the four coils 13 are connected to the U-phase, V-phase, and W-phase strip-shaped conductive members 22 through the connection wires 23.
- the U-phase coil, the V-phase coil and the W-phase coil formed by connecting the four coils 13 in parallel are Y-connected to form the stator winding 12.
- connection wiring 23 is disposed on the outer side in the axial direction of the holder 21 so that the longitudinal direction of the rectangular cross section is parallel to the axial direction, and the outer side in the axial direction of the holder 21 is strip-shaped conductive.
- a circumferential extension 26 extending in the circumferential direction parallel to the member 22; a radial extension 27 that is bent at a substantially right angle by a bending portion 28 and extends radially inward; and connected to the coil terminal 13a to be connected; Is provided.
- FIG. 8 shows a case where the length of the radial extension 27 is shorter than the length of the circumferential extension 26.
- the rigidity in the bending direction in which the plane formed by the long side of the cross-sectional rectangle of the radial extension 27 is the inner surface is the rigidity of the plane formed by the long side of the cross-sectional rectangle of the circumferential extension 26 as the inner surface. Greater than the rigidity in the bending direction. That is, the circumferential extension 26 is easier to bend than the radial extension 27.
- the circumferential extension 26 is elastically deformed.
- the elastic force acts so as to rotate the bending portion 28 counterclockwise around the bending center of the bending portion 28 in FIG.
- the bent portion 28 side of the circumferential extension 26 is mainly outward in the radial direction as shown in FIG. Curves in a convex shape.
- the circumferential extension 26 is elastically deformed.
- the elastic force acts to rotate the bending portion 28 clockwise around the bending center of the bending portion 28 in FIG.
- the circumferential extension 26 is easier to bend than the radial extension 27, the circumferential extension 26 is mainly curved in a radially inwardly convex arcuate shape, and the bending portion 28 is displaced diagonally downward to the left. To do.
- the stress which acts on the connection part of the connection wiring 23 and the coil terminal 13a with a thermal stress or an exciting force is absorbed.
- the connecting portion 24 is relatively displaced to the right side with respect to the coil terminal 13a in FIG. 8A due to thermal stress or excitation force, the bent portion 28 is pressed to the right side in FIG. 8A.
- the bent portion 28 side of the circumferential extension 26 is curved outwardly in the radial direction, and the amount of curvature of the radial extension 27 is slight. It will be something. Thereby, the stress which acts on the connection part of the connection wiring 23 and the coil terminal 13a with a thermal stress or an exciting force is absorbed.
- the connecting portion 24 when the connecting portion 24 is displaced relative to the left side with respect to the coil terminal 13a in FIG. 8A due to thermal stress or excitation force, the bent portion 28 is moved to the left side in FIG. 8A. Gravitate. Therefore, the bending portion 28 is displaced obliquely downward to the left, the bending angle of the bending portion 28 is widened, and the circumferential extension 26 and the radial extension 27 are slightly curved. Thereby, the stress which acts on the connection part of the connection wiring 23 and the coil terminal 13a with a thermal stress or an exciting force is absorbed.
- FIG. 9 shows a case where the length of the radial extension 27 is longer than the length of the circumferential extension 26.
- the rigidity in the bending direction in which the plane formed by the long side of the cross-sectional rectangle of the radial extension 27 is the inner surface is the rigidity of the plane formed by the long side of the cross-sectional rectangle of the circumferential extension 26 as the inner surface. It becomes smaller than the rigidity in the bending direction. That is, the radial extension 27 is easier to bend than the circumferential extension 26.
- the circumferential extension 26 is elastically deformed.
- the elastic force acts to rotate the bending portion 28 counterclockwise around the bending center of the bending portion 28 in FIG. 9A.
- the radial extension 27 is easier to bend than the circumferential extension 26, mainly the bending portion 28 side of the radial extension 27 is circumferential in the circumferential direction as shown in FIG. 9B. It curves in a convex shape on the opposite side to the extension 26.
- the stress which acts on the connection part of the connection wiring 23 and the coil terminal 13a with a thermal stress or an exciting force is absorbed.
- the circumferential extension 26 is elastically deformed.
- the elastic force acts to rotate the bending portion 28 clockwise around the bending center of the bending portion 28 in FIG. 9A.
- the radial extension 27 is easier to bend than the circumferential extension 26
- the radial extension 27 is mainly curved in a convex arcuate shape toward the circumferential extension 26 in the circumferential direction, and the bending portion 28 is Displaces diagonally to the left.
- the stress which acts on the connection part of the connection wiring 23 and the coil terminal 13a with a thermal stress or an exciting force is absorbed.
- the connecting portion 24 is relatively displaced to the right side with respect to the coil terminal 13a in FIG. 9A due to thermal stress or excitation force, the bent portion 28 is pressed to the right side in FIG. 9A.
- the bent portion 28 side of the radial extension 27 is curved in a convex shape on the opposite side of the circumferential extension 26 in the circumferential direction.
- the connecting portion 24 is relatively displaced to the left side with respect to the coil terminal 13a in FIG. 9A due to thermal stress or excitation force, the bending portion 28 is moved to the left side in FIG. 9A. Gravitate. Therefore, the bending portion 28 is displaced obliquely downward to the left, the bending angle of the bending portion 28 is widened, and the circumferential extension 26 and the radial extension 27 are slightly curved. Thereby, the stress which acts on the connection part of the connection wiring 23 and the coil terminal 13a with a thermal stress or an exciting force is absorbed.
- connection reliability of the connecting portion between the radially extending portion 27 and the coil terminal 13a is improved.
- connection wiring 23 unlike Patent Document 1, it is not necessary to reduce the thickness of the connection wiring 23 or to reduce the width thereof. Therefore, it is possible to secure a current cross-sectional area of the connection wiring 23 and adapt to a large current. it can. Further, since the circumferential extension 26 and the radial extension 27 can be formed simply by bending the main body 25 of the connection wiring 23 at a substantially right angle at the bending portion 28, the connection wiring 23 is formed in a V shape as in Patent Document 1. Even when the cross-sectional area of the connection wiring 23 is increased, the processing becomes easy. In addition, since local bending such as a V-shape is not required, it is possible to suppress a reduction in stress relaxation effect due to work hardening.
- connection wiring 23 is disposed on the outer side in the axial direction of the holder 21, an increase in the axial dimension of the coil end of the stator winding 12 is suppressed, and the rotating electrical machine 100 can be reduced in size.
- connection wiring 23 is configured so that the circumferential length of the circumferential extension 26 becomes shorter as the radial length of the radial extension 27 becomes longer. It is possible to reduce both the thermal stress acting on the connection portion between the coil terminal 23 and the coil terminal 13a and the stress due to the vibration excitation force.
- the holder 21 is arranged on one side in the axial direction of the stator core 11 and on the radially outer side of the group of the coils 13.
- the holder 21 is arranged in the axial direction of the stator core 11. You may arrange
- the radially extending portion 27 is formed to extend radially outward from the bent portion 28.
- FIG. 10 is a perspective view showing a stator provided with a connection member in a rotary electric machine according to Embodiment 2 of the present invention
- FIG. 11 shows a connection member in the rotary electric machine according to Embodiment 2 of the present invention
- FIG. 12 is a main part top view showing the periphery of the connecting member of the stator where the connecting member is provided in the rotary electric machine according to Embodiment 2 of the present invention. .
- the connecting member 20A includes a holder 21, a strip-like conductive member 22, and a connection wiring 23 ′.
- the connection wiring 23 ′ includes a circumferential extension 26, a radial extension 27, and a bent portion 28 ′ that connects the circumferential extension 26 and the radial extension 27. It is formed in an arc shape that is convex outward in the radial direction and has a central angle of 90 degrees.
- the stator 10A according to the second embodiment is configured in the same manner as the stator 10 according to the first embodiment except that the connecting member 20A is used instead of the connecting member 20.
- the bent portion 28 ′ is formed in an arc shape that is convex outward in the radial direction. Therefore, when the connecting portion 24 is displaced inward in the radial direction with respect to the coil terminal 13a due to thermal stress or excitation force, the bent portion 28 'is elastically deformed so as to narrow the arc-shaped opening. Further, when the connecting portion 24 is relatively displaced radially outward with respect to the coil terminal 13a due to thermal stress or excitation force, the bending portion 28 'is elastically deformed so as to widen the arc-shaped opening.
- the connecting portion 24 when the connecting portion 24 is relatively displaced with respect to the coil terminal 13a by the thermal stress or the exciting force, the bending portion 28 'is elastically deformed so as to narrow the arc-shaped opening. Further, when the connecting portion 24 is relatively displaced away from the coil terminal 13a in the circumferential direction due to thermal stress or excitation force, the bending portion 28 'is elastically deformed so as to widen the arc-shaped opening.
- the circumferential and radial displacement due to the excitation force or thermal stress during vibration of the connection wiring 23 ′ is caused by elastic deformation of the circumferential extension 26, the radial extension 27, and the bending portion 28 ′. Absorbed. Thereby, since the increase in the stress which acts on the connection part of the radial direction extension part 27 and the coil terminal 13a is suppressed, the connection state of the radial direction extension part 27 and the coil terminal 13a deteriorates, or connection strength falls. Without this, the connection reliability of the connecting portion between the radially extending portion 27 and the coil terminal 13a is improved.
- the holder 21 is arranged on one side in the axial direction of the stator core 11 and outside in the radial direction of the group of the coils 13.
- the holder 21 is arranged in the axial direction of the stator core 11. You may arrange
- the bent portion 28 ′ bulges in an arc shape that is convex toward the inner diameter side, that is, in the direction opposite to the direction extending from the bent portion 28 ′ of the radial extension portion 27 with respect to the circumferential extension portion 26. It is formed in an arc shape.
- the bending radius of the arc-shaped bent portion 28 ′ is set to be equal to or greater than the plate thickness of the connection wiring 23 ′, so that the reduction of the stress relaxation effect due to work hardening can be suppressed.
- the bent portion 28 ′ is formed in an arc shape, but the bent portion 28 ′ is not limited to an arc shape and may be a curved surface shape, for example, a U shape. .
- the central angle of the arc shape of the bent portion 28 ′ is less than 180 degrees, the force for elastically deforming the bent portion 28 ′ so as to narrow the opening of the arc shape increases. Further, when the central angle of the arc shape of the bent portion 28 ′ is larger than 270 degrees, the force for elastically deforming the bent portion 28 ′ so as to widen the arc-shaped opening increases. Therefore, the central angle of the arc shape of the bent portion 28 ′ is preferably 90 degrees or more and 270 degrees or less.
- connection wiring 23 ′ As a result, the stress in all directions on the plane orthogonal to the axis of the rotating electrical machine due to heat and excitation force is absorbed by the deformation of the connection wiring 23 ′, and the connection state between the connection wiring 23 ′ and the coil terminal 13a is deteriorated. And a decrease in bonding strength can be suppressed.
- the stator winding is configured by concentrated winding, but the stator winding may be distributed winding.
- four grooves are formed concentrically on the holder, but the number of grooves is not limited to four.
- the stator core includes 12 teeth, but the number of teeth of the stator core is appropriately set according to the specification of the stator, that is, the number of slots.
- four coils are connected in parallel to form a phase coil.
- the configuration of the phase coil is not limited to this, and for example, four coils are connected in series.
- a phase coil may be configured.
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- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
図1はこの発明の実施の形態1に係る回転電機を示す片側断面図、図2はこの発明の実施の形態1に係る回転電機における固定子を示す斜視図、図3はこの発明の実施の形態1に係る回転電機における結線部材が配設された固定子を示す斜視図、図4はこの発明の実施の形態1に係る回転電機における結線部材が配設された固定子を示す断面図、図5はこの発明の実施の形態1に係る回転電機における結線部材が配設された固定子の結線部材周りを示す要部断面図、図6はこの発明の実施の形態1に係る回転電機における結線部材が配設された固定子の結線部材周りを示す要部斜視図、図7はこの発明の実施の形態1に係る回転電機における帯状導電部材と接続配線の打ち抜き形状を説明する要部平面図である。図8および図9はそれぞれこの発明の実施の形態1に係る回転電機における応力緩和動作を説明する図である。
また、接続配線23の本体部25を曲げ部28で略直角に曲げるだけで周方向延長部26および径方向延長部27を形成できるので、特許文献1のように、接続配線23をV字状に屈曲させる必要がなく、接続配線23の断面積が大きくなった場合でも、加工が容易となる。また、V字状などの局所的な屈曲加工が不要であるので、加工硬化に起因する応力緩和効果の低下を抑制できる。
図10はこの発明の実施の形態2に係る回転電機における結線部材が配設された固定子を示す斜視図、図11はこの発明の実施の形態2に係る回転電機における結線部材が配設された固定子の結線部材周りを示す要部斜視図、図12はこの発明の実施の形態2に係る回転電機における結線部材が配設された固定子の結線部材周りを示す要部上面図である。
なお、実施の形態2による固定子10Aは、結線部材20に替えて結線部材20Aを用いている点を除いて、上記実施の形態1による固定子10と同様に構成されている。
また、上記実施の形態2では、曲げ部28’が円弧形状に形成されているが、曲げ部28’は、円弧形状に限定されず、曲面形状であればよく、例えば、U字状でもよい。
また、上記各実施の形態では、4つの溝がホルダに同心状に形成されているが、溝の個数は4つに限定されない。
また、上記各実施の形態では、固定子鉄心が12本のティースを備えているが、固定子鉄心のティース数は、固定子の仕様、すなわちスロット数に応じて、適宜設定される。
また、上記各実施の形態では、4本のコイルを並列接続して相コイルを構成しているが、相コイルの構成はこれに限定されず、たとえは4本のコイルを直列に接続して相コイルを構成してもよい。
Claims (6)
- 回転子と、
複数のティースが、それぞれ、円環状のバックヨーク部の内周面から径方向内方に突出して、周方向に配列された固定子鉄心、および、それぞれ、上記固定子鉄心に装着されて、上記固定子鉄心から軸方向一側に突出する一対のコイル端末を有する複数のコイルを備え、上記回転子を囲繞するように上記回転子と同軸に配設される固定子と、
上記複数のコイルに電力を授受するための結線部材と、を備え、
上記結線部材は、
リング状に成形され、上記固定子の軸方向一側、かつ上記複数のコイルの外径側、又は上記固定子の軸方向一側、かつ上記複数のコイルの内径側に配設され、溝部が軸方向一側に開口して同心円状に複数形成された絶縁性のホルダと、
それぞれ、上記複数の溝部のそれぞれに収納されて周方向に延びる複数の帯状導電部材と、
それぞれ、断面矩形の帯状体に形成され、上記複数の帯状導電部材のぞれぞれの軸方向一側の側端部から延び出て、断面矩形の長手方向を軸方向と平行として上記絶縁性ホルダの軸方向一側に通り、接続対象の上記コイル端末に接続される複数の接続配線と、を備え、
上記複数の接続配線は、それぞれ、上記帯状導電部材の軸方向一側の側端部から延び出た後、上記絶縁ホルダの軸方向一側を上記帯状導電部材と平行に周方向に延びる周方向延長部と、上記周方向延長部の上記帯状導電部材と反対側の端部から曲げ部を介して径方向に延び、上記曲げ部と反対側の端部を接続対象の上記コイル端末に接続される径方向延長部と、を備えている回転電機。 - 上記曲げ部は、上記周方向延長部に対して、上記径方向延長部の上記曲げ部から延びる方向と逆側に膨出する曲面形状に形成されている請求項1記載の回転電機。
- 上記曲げ部は、円弧形状である請求項2記載の回転電機。
- 上記曲げ部の曲げ半径が、上記接続配線の厚み以上である請求項3記載の回転電機。
- 上記曲げ部は、中心角が180度以上の円弧形状に形成されている請求項3又は請求項4記載の回転電機。
- 上記複数の接続配線は、上記径方向延長部の長さが長いほど、上記周方向延長部の長さが短くなっている請求項1から請求項5のいずれか1項に記載の回転電機。
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JP2017508923A JP6305634B2 (ja) | 2015-03-31 | 2015-03-31 | 回転電機 |
US15/560,524 US20180115211A1 (en) | 2015-03-31 | 2015-03-31 | Rotary electric machine |
DE112015006399.4T DE112015006399T5 (de) | 2015-03-31 | 2015-03-31 | Elektrische rotationsmaschine |
PCT/JP2015/060130 WO2016157410A1 (ja) | 2015-03-31 | 2015-03-31 | 回転電機 |
CN201580078159.8A CN107431400B (zh) | 2015-03-31 | 2015-03-31 | 旋转电机 |
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JP (1) | JP6305634B2 (ja) |
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CN112018964B (zh) * | 2016-03-09 | 2023-05-23 | 株式会社电装 | 电动机及电动机的制造方法 |
WO2017212574A1 (ja) * | 2016-06-08 | 2017-12-14 | 三菱電機株式会社 | 回転電機 |
JP6591574B2 (ja) * | 2018-01-15 | 2019-10-16 | 本田技研工業株式会社 | 波巻コイルの保持装置、保持方法及び挿入方法 |
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JP2005051999A (ja) * | 2004-10-12 | 2005-02-24 | Honda Motor Co Ltd | 回転電機のステータ |
JP2013102633A (ja) * | 2011-11-09 | 2013-05-23 | Mitsubishi Electric Corp | 回転電機およびそのステータコイルの結線ユニットの製造方法 |
JP5245782B2 (ja) * | 2008-12-09 | 2013-07-24 | トヨタ自動車株式会社 | 回転電機 |
JP2014023396A (ja) * | 2012-07-23 | 2014-02-03 | Hitachi Metals Ltd | 集配電リング及び電動機 |
JP2014090567A (ja) * | 2012-10-30 | 2014-05-15 | Mitsubishi Electric Corp | 回転電機のステータ |
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JP2003079079A (ja) * | 2001-09-03 | 2003-03-14 | Honda Motor Co Ltd | 回転電機の集配電リング |
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JP2007135340A (ja) * | 2005-11-11 | 2007-05-31 | Sumitomo Electric Ind Ltd | 回転電機のステータ |
JP4340740B2 (ja) * | 2007-07-19 | 2009-10-07 | トヨタ自動車株式会社 | 電動機のステータに用いられる接続線、その接続線を備えたステータおよびその接続線の曲げ方法 |
JP4661849B2 (ja) * | 2007-09-27 | 2011-03-30 | トヨタ自動車株式会社 | 固定子構造 |
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- 2015-03-31 JP JP2017508923A patent/JP6305634B2/ja not_active Expired - Fee Related
- 2015-03-31 CN CN201580078159.8A patent/CN107431400B/zh not_active Expired - Fee Related
- 2015-03-31 US US15/560,524 patent/US20180115211A1/en not_active Abandoned
- 2015-03-31 DE DE112015006399.4T patent/DE112015006399T5/de not_active Withdrawn
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JP2005051999A (ja) * | 2004-10-12 | 2005-02-24 | Honda Motor Co Ltd | 回転電機のステータ |
JP5245782B2 (ja) * | 2008-12-09 | 2013-07-24 | トヨタ自動車株式会社 | 回転電機 |
JP2013102633A (ja) * | 2011-11-09 | 2013-05-23 | Mitsubishi Electric Corp | 回転電機およびそのステータコイルの結線ユニットの製造方法 |
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JP2014096925A (ja) * | 2012-11-09 | 2014-05-22 | Hitachi Metals Ltd | 集配電リング及び電動機 |
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CN107431400A (zh) | 2017-12-01 |
JP6305634B2 (ja) | 2018-04-04 |
CN107431400B (zh) | 2019-06-14 |
US20180115211A1 (en) | 2018-04-26 |
DE112015006399T5 (de) | 2017-12-14 |
JPWO2016157410A1 (ja) | 2017-06-15 |
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