WO1998040956A1 - Generateur de courant alternatif pour vehicule - Google Patents
Generateur de courant alternatif pour vehicule Download PDFInfo
- Publication number
- WO1998040956A1 WO1998040956A1 PCT/JP1997/003789 JP9703789W WO9840956A1 WO 1998040956 A1 WO1998040956 A1 WO 1998040956A1 JP 9703789 W JP9703789 W JP 9703789W WO 9840956 A1 WO9840956 A1 WO 9840956A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- coil end
- end portion
- gap
- alternator according
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
-
- 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
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
- H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles
-
- 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
Definitions
- the present invention relates to an automotive alternator mounted on a passenger car, a truck, and the like. Background art
- the coil ends are aligned as a whole so that they are flat and the surface area is secured, and the coil ends are shifted in the axial direction to form gaps, so the coil ends must be elongated in the axial direction.
- the results did not meet the purpose of miniaturization.
- An object of the present invention is to solve the problems of the prior art.
- An object of the present invention is to facilitate the flow of a cooling medium into the interior of the coil end portion, thereby effectively utilizing the flow of the cooling medium and improving the heat release property of the coil end portion.
- An object of the present invention is to reduce noise in addition to improving the heat dissipation of the coil end portion.
- the present invention employs the following means to achieve the above object.
- the coils are dispersed and separated from each other in a staggered arrangement or a lattice arrangement with a mutual disparity and a depth in the radial direction.
- the clusters are dispersed and separated in a thick cluster, not only can the air flow reliably flow toward the inside of the coil end, but also the flow of cooling air (cooling wind) While colliding with each coil end, the flow must be changed in a zigzag manner and proceed.
- the entire coil wire and the flow velocity on the entire surface can be increased, and the heat exchange effect is remarkably improved. Increases heat and cooling.
- 1 flows repeatedly due to the numerous coils and the gaps around it, and the reflection and absorption of countless sound waves are repeated, which has a significant effect of reducing noise.
- the entire coil end is not a flat shape but a bulged cross section, the air flow is less obstructed.
- several coil ends may be brought into contact to form a set, and a gap may be formed only between a plurality of coil end sets. In this case, if the number of coil ends to be bundled increases, the exposed area of each coil end decreases and the heat radiation property decreases, so for example, a set of two or three sets is desirable.
- a large number of coil ends are evenly distributed in the coil end portion; ', a group of coil ends in a section along the axial direction of the coil end portion or a section along the radial direction. It may be divided and distributed unevenly.
- each phase can be preformed at an angle in advance. In this case, a gap can be formed at the base of the coil end which is likely to overlap with each other, and further, an advantage in mounting the armature coil can be provided.
- the heat dissipation is maximized.
- the gap is set to be approximately equal to or less than the diameter of the coil wire, and the gap is set to be approximately 1 Z10 or more of the diameter of the coil wire. It is understood that such a relationship is because the cooling medium is sufficiently supplied to the coil located inside the coil end.
- the plurality of coil ends extending from one slot are separated from each other by the impregnated adhesive only at the base portion. 3 ⁇ 4 Thus it is disposed is closed, and it is possible to obtain sufficient strength of the impregnation fixatives at the root portion the deformation mode Ichime cement the coil end portion is maximized, in other parts of the Koiruendo is High heat dissipation can be obtained by reducing the clogging of the gap by the impregnating adhesive, and both vibration resistance and heat dissipation can be achieved.
- heat dissipation can be improved by devising the arrangement of each coil end inside the coil end portion.
- a group of coil ends is arranged to form a coil end row, and a passage space through which the cooling medium easily flows is formed between the coil ends and another coil end along the coil end row.
- the cooling medium can be introduced deep inside the coil end portion.
- a group of coil ends may be arranged in parallel with the rotation axis, or may be arranged radially or radially from the rotation axis. Also, they may be arranged in a plurality of rows. Also in this configuration, it is desirable that a gap is formed between the coil ends that form one coil end row, and that a gap is also formed between a plurality of coil end rows.
- the passage of the cooling medium formed along the coil end row is opened at the axial end of the coil end portion, so that the cooling medium is formed from the axial end side of the coil end portion.
- the passage of the cooling medium substantially coincident with the axial center axis of the coil, the cooling medium can flow uniformly from the inside to the inside and outside of the coil end, which is long in the axial direction, Unbiased heat radiation can be given to the inside and outside of the coil end.
- the radial direction of the coil end portion is A cooling fan may be arranged on the side, and the tip end of the coil end portion may be arranged inside the inner diameter of the stator to form a funnel surrounding the cooling fan.
- the flow of the cooling medium flows between the coil end portion and the frame. It is easier to pass through the inside of the coil end part than to pass through, and heat dissipation can be improved.
- the coil end portion may be thermally adhered to the frame, and by adopting such a contact structure, the flow resistance between the frame and the coil end portion is maximized. It is possible to increase the amount of cooling medium that passes through the inside of the coil end portion, and to transfer the heat of the coil end portion to the frame to relatively reduce the temperature of the coil end portion. it can.
- a thermally conductive insulating member is disposed between the coil end portion and the frame as in the invention according to claim 10. Therefore, it is possible to ensure electrical insulation between the coil end and the frame, and to ensure heat transfer from the coil end to the frame. In particular, due to its flexibility, stable heat transfer can always be ensured even when the coil or the frame is deformed due to thermal expansion.
- the base between the coil end and the stator is a part where the coil enters and exits the slot, but since this part is easy for the wind to escape, for example, claim 1
- the insulating film for insulating the armature coil and the stator is used. It may be arranged so as to protrude from the stator end face and close the gap between the coil end and the stator at the base of the coil end on the stator side. According to this configuration, the cooling medium can flow into the inside of the coil end portion from between the coil end portion and the stator.
- the centrifugal cooling fan that rotates together with the rotor is arranged close to the radially inner side of the coil end portion, and the coil end portion is positioned at the position where the cooling fan discharge flow is strongest.
- a cooling means a force capable of utilizing a cooling fan.
- a partition portion for closing an axial end of a U-shaped opening of a disk portion of the Landel-type pole core The flow rate and flow rate of the cooling medium flowing toward the coil end portion can be increased even when the side wall surface of the U-shaped opening is used as a fan, and the heat radiation property can be improved.
- the U-shaped opening and the fan blade of the cooling fan are positioned so as to correspond to each other, and the cooling fan and the side wall of the U-shaped opening are configured to cooperate to generate a flow of cooling air.
- the partitioning portion is provided corresponding to the stator-side root portion of the coil end portion as in the invention according to claim 14, and is supplied by the cooling fan and the side wall surface of the U-shaped opening.
- the supplied cooling air can be reliably supplied to the coil end portion.
- the partition portion may be a non-magnetic member, a magnet oriented to block leakage magnetic flux between magnetic poles, or a holding member for the magnet.
- the armature coil is a multilayer winding in which the coil extends from the slot of the stator to both sides in the circumferential direction to form a coil end portion, so that the number of coil ends can be reduced. This makes it easier to place each coil with the required clearance.
- the simple winding unit can be simply formed into a waveform and stored in the slot, so that the unit can be easily configured.
- FIG. 1 is a partially broken cross-sectional view of an automotive alternator to which the present invention is applied.
- FIG. 2 is a plan view showing the shape of the coil end portion.
- FIG. 3 is a cross-sectional view showing the shape of the coil end portion.
- Figure 4 is a graph showing the results of the experiment.
- Figure 5 is a graph showing the experimental results.
- FIG. 6 is a schematic sectional view showing the flow of cooling air between coil ends.
- FIG. 7 is a partial sectional view of another embodiment to which the present invention is applied.
- FIG. 1 is a partially broken cross-sectional view of an automotive alternator to which the present invention is applied.
- FIG. 2 is a plan view showing the shape of the coil end portion.
- FIG. 3 is a cross-sectional view showing the shape of the coil end portion.
- Figure 4 is a graph showing the results of the experiment.
- Figure 5 is a graph showing the experimental results.
- FIG. 6 is a schematic sectional view showing the flow of cooling
- FIG. 8 is a partial sectional view of another embodiment to which the present invention is applied.
- FIG. 9 is a partial sectional view of another embodiment to which the present invention is applied.
- FIG. 10 is a perspective view showing a shape of a coil end portion of another embodiment.
- FIG. 11 is a cross-sectional view of FIG.
- FIG. 12 is a plan view of FIG.
- FIG. 13 is a perspective view showing a rotor according to another embodiment.
- FIG. 14 is a cross-sectional view of a vehicle AC generator according to another embodiment.
- FIG. 15 is a cross-sectional view of a strand of another embodiment.
- FIG. 1 shows a partially broken cross section of the vehicle alternator.
- the vehicle alternator 1 has a frame 10.
- the frame 10 includes a front frame 11 and a rear frame 12, which are fastened with a plurality of fastening bolts 13.
- the frame 10 is provided with inlet openings 14 and 15 at both ends in the axial direction as inlets for cooling air.
- the radially outer peripheral surface of the frame 10 has a slit-shaped cooling air outlet corresponding to a radially outer side of a cooling fan described later.
- a plurality of outlet openings 16 and 1-7 are opened in parallel in the circumferential direction.
- a rotating shaft 20 is rotatably supported on the frame 10.
- a pulley 21 receiving power of the engine is fixed to the front end of the rotating shaft 20.
- a rotor 30 is fixed to the center of the rotating shaft 20.
- a current collector 42 including a slip ring and a brush is attached to the rear end of the rotating shaft 20, and a field current is supplied to the field coil 32.
- the rotor 30 has a Landel-type pole core 31 and a field coil 32 attached to the pole core 31.
- the pole core 31 includes a pair of poles 31a and 31b.
- Each of the claw poles 31a and 31b is composed of a boss 31c fitted and fixed to the rotating shaft 20, a disk 31d extending radially outward from the boss, and a disk.
- Claw-shaped magnetic pole portions 31 e extending in the axial direction from In Fig. 1, 31 c, 31 d, and 31 e are shown for the cross pole 31 a.
- Cooling fans 33 and 34 are fixed to the end faces of both ends of the rotor 30 in the axial direction.
- the front-side cooling fan 33 is configured by mixing a fan blade as a centrifugal fan and a fan blade as a mixed flow fan.
- the fan blade of the mixed flow fan is provided on the disk portion 31d so as to substantially coincide with a U-shaped opening formed between the claw-shaped magnetic poles 31e.
- the rear cooling fan 34 is constituted only by a fan blade as a centrifugal fan.
- the rotor 30 includes an auxiliary magnet 35 for increasing the effective magnetic flux. Between the claw-shaped magnetic pole portions 3 1 e of the rotor 30, the polarity opposite to the polarity of the adjacent magnetic pole Auxiliary magnets 35 for increasing the effective magnetic flux are provided.
- the auxiliary magnet 35 includes a plurality of permanent magnets disposed between the magnetic poles, and a holding member that integrally connects the plurality of permanent magnets as a preliminary assembly.
- the holding member has a box-shaped portion for accommodating a rectangular permanent magnet, and this box-shaped portion is located between the claw-shaped magnetic poles 31e. Further, the permanent magnet is magnetized so as to face the polarity of the adjacent magnetic pole, and the holding member is made of resin, which is a non-magnetic material.
- the auxiliary magnet 35 is arranged so that its axial end face substantially coincides with the axial end face of the stator 40.
- the axial end face of the auxiliary magnet 35 functions as a wind pressure partition that partially blocks the flow of cooling air between the claw-shaped magnetic poles 31e. This facilitates the generation of a flow of air toward the outside in the radial direction due to the side wall surface of the U-shaped opening.
- the holding member faces the axial end surface of the auxiliary magnet 35, the permanent magnet may be exposed.
- a stator 40 is arranged on the outer peripheral side of the rotor 30 so as to face the same.
- the stator 40 is fixed to the frame 10.
- the stator 40 is formed in a cylindrical shape by stacking steel plates to a predetermined thickness, and has a plurality of slots formed on an inner peripheral surface.
- An armature coil 50 is wound around the stator 40 by a coil element wire provided with an organic insulating film.
- the armature coil 50 has a portion accommodated in the slot, and coil end portions 54, 55 exposed at both axial ends of the stator 40.
- FIG. 2 shows a perspective view of the armature coil 50 and the stator 40
- FIG. 3 shows the armature coil 50 and the stator 40 viewed from the axial direction. .
- the armature coil 50 includes an X-phase coil group 51, a Y-phase coil group 52, and a Z-phase coil group 53 as a three-phase AC generator.
- Coil end The parts 54 and 55 are an aggregate of a plurality of coil ends 56 as crossovers between the slots.
- a part of the coil end 56 located in the outer shell of the coil end portions 54, 55 is connected to the frame 11, 11 via an electrically insulating coating 10a as an insulating member having excellent heat conductivity. It is in contact with the inner wall of 12.
- the coating film 10a can be applied to the entire inner surface of the frame or only the portion facing the coil end 56. Further, in order to enhance the adhesion to the coil end 56, the coating may be brought into contact with the coil end before drying, or a coating that maintains the adhesiveness for a while may be employed. Further, after the contact with the coil end 56, a fixing agent may be applied for the attachment.
- the coating film not only the coating film but also a film / resin molded product having excellent heat conductivity and electrical insulation properties can be used.
- an adhesive material is used to enhance the adhesion to the coil end. It is desirable to select an adhesive or to add a fixing agent in a later step to enhance the adhesion.
- a voltage adjusting circuit 60 and a rectifying circuit 70 are mounted outside the rear frame 12 and are covered with a plate-like cover 80.
- the rotation of the rotor 30 causes the cooling fans 33, 34 to rotate, so that air is sucked in from both axial ends and discharged radially outward.
- cooling air is introduced from inlet 14. Cooling air Are divided into a flow toward the coil end portion 54-and a flow to flow in the axial direction along the claw-shaped magnetic pole 31 e to cool the rotor 30. At this time, part of the air is forced to flow outward in the centrifugal direction by the side wall surface of the U-shaped opening of the disk portion 31d of the front-side pole 31a, and the air flows to the coiled portion 54. Heading.
- the air after cooling the voltage regulator circuit 60, rectifier circuit 70, and current collector 42 passes through the multiple openings formed in the cover 80, and is introduced from the inlet 15 .
- This cooling air flows toward the coil end 55.
- the cooling air that has passed between the claw-shaped magnetic poles 31 e is flowed outward in the centrifugal direction by the side wall surface of the U-shaped opening of the disk portion 31 d of the rear claw pole 31 b.
- the cooling air generated by the two cooling fans 33, 34 serving as cooling means cools the entire components of the vehicle alternator 1, and is directed particularly toward the outlets 16, 17 During the flow, the coil ends 56 constituting the coil end portions 54 and 55 are cooled.
- the coil end portions 54, 55 are arranged in the passage of the cooling air from the cooling fans 33, 34 to the outlets 16, 17, respectively.
- the coil ends 56 are arranged so as to be substantially evenly distributed.
- the coil ends 56 are arranged with a gap substantially corresponding to the wire diameter.
- a plurality of coil ends 56 extending from one slot of the stator 40 are formed immediately after exiting from this slot. It is bundled only at the base and forms a coil end bundle.
- the gap between the coil ends 56 is closed only by the adhesive 57 at the root, and the adhesive 57 almost clogs the gap between the coils 56 on the tip side from the root. Absent.
- the coil ends 56 of each coil group 51, 52, 53 are separated by a gap except for the root in the group. Further, a gap is provided between the coil groups, and the coil ends 56 are separated from each other both within the group and between the groups.
- the coil ends 56 in the group are radially divided into a plurality of layers as shown in FIGS.
- the coil ends 56 of the outer layer are arranged corresponding to the gaps between the coil ends of the respective inner layers.
- one coil end 56 belonging to an arbitrary layer is positioned corresponding to two adjacent coil ends belonging to the inner layer in the radial direction.
- the coil ends of the outer layer are arranged between two adjacent coil ends of the inner layer when viewed from the radially inner side to the outer side. This relationship is realized between multiple layers.
- the strength such as vibration resistance is reduced.However, due to the fixation with the impregnated fixing agent at the root of the coil ends 56 and the contact between the coil end outer shell and the frame. The strength of the coiled sections 54, 55 is ensured.
- the armature coil 50 in the slot is wrapped by an insulating film and housed in the slot.
- the insulating film 41 is disposed so as to extend from the axial end face of the stator 40 at the root of the coil 56, and is disposed at the root of the coil end 56. The gap between the bundles is reduced to provide ventilation resistance.
- the coil end portions 54, 55 are disposed very close to the inner surfaces of the frames 11, 12, so that the ventilation resistance of the passage passing around the coil ends 54, 55 is increased.
- the gap between the bundles at the root of 6 also increases the ventilation resistance with the insulating film 41.
- the coil end portions 54, 55 have a plurality of coil ends 56 arranged with a gap therebetween, and are arranged so as to form a plurality of passages in the coil end portions 54, 55 to reduce ventilation resistance. Therefore, the passage that passes through the inside of the coil end portions 54 and 55 has a smaller ventilation resistance than the passage that passes around the coil end portions 54 and 55.
- FIG. 4 and Fig. 5 are graphs showing the experimental results obtained by changing the gap between the coil ends based on the 70 (A) class, 100 (A) class, and 130 (A) class generators. is there.
- FIG. 4 shows the relationship between the average gap between the coil groups shown in FIG. 3 and the coil end temperature, that is, the heat dissipation.
- the coil ends of the X phase are bundled to form a coil end group as one coil end bundle.
- coil end groups corresponding to the phases ⁇ and ⁇ ⁇ are created, and axial ends between the coil end groups are formed.
- the parts are separated from each other.
- the gap between the coil end groups is measured for the part excluding the root of the coil end. It is measured as an average 'gap' including a close contact point.
- Fig. 5 shows the relationship between the average gap between the coil ends in the group and the coil end temperature when the ratio between the average gap between the coil groups and the wire diameter is 1.
- the gap between the coil ends is measured for the portion excluding the root of the coil end, and is also measured as an average gap including the partially adhered portion.
- Figures 4 and 5 show that the coil temperature is the lowest (approximately 150 ° C in Figure 4 and Figure 5 in Figure 5) by setting the clearance / wire diameter to approximately 0.1 or more, regardless of the output class of the generator. It is shown that it can be maintained around 120 ° C).
- the gap Z-wire diameter is about 1.0
- the gap / wire diameter is set to 1.0 or more
- the size of the coil end portions 54 and 55 will be increased, and the physical size of the entire AC generator will be increased. For this reason, a recommended range of approximately 0.1 or more and approximately 1.0 or less is found. From the viewpoint that the coil temperature almost reaches the minimum temperature, it is desirable to set it to about 0.5 or more.
- FIG. 6 is an enlarged sectional view showing the arrangement of three coil ends 56 a to c in the coil end portion 54.
- the cooling air sent from the cooling fan 33 flows through the gap between the lines as indicated by the thick arrows in FIG. At this time, not only the cooling air blows on the upstream surface of the coil ends 56a and 56b located on the outermost surface, but also the coil end 56c on the downstream side, so Cooling air flows along On the other hand, the coil end 56c located downstream is located between the two coil ends 56a and 56b located upstream.
- the centrifugal cooling fans 33, 34 which rotate with the rotor, are placed close to the inside of the coil ends 54, 55 in the radial direction, and the cooling fans 33, 34 have the strongest discharge flow. Since the coil end portions 54, 55 are located at the positions, the fans 33, 53, in addition to the flow resistance between the surroundings of the coil end portions 54, 55 and the inside of the coil end portions 54, 55, are provided. The high discharge wind speed of 34 can be directly blown into the inside of the coil end portions 54 and 55, and high heat dissipation can be obtained. In the case of a coil end with a high density and little gap, it is necessary to place a certain gap from the cooling fan in order to suppress noise.
- the noise is minimized in principle, and the peak value of the pressure wave is reduced in the coil end having a sufficiently low flow resistance, so that the siren sound is also reduced.
- noise generation can be suppressed even when the cooling fan approaches 2% of the cooling fan diameter.
- the coil ends are arranged with a relatively small gap, and the coil end rows 50a, 50 are inclined at an angle of 1 to ⁇ 4 toward the center as a vehicle AC generator in the radial direction.
- b, 50c, 50a ', 50b', 50c ' Further, a relatively large tape-like gap is formed between each coil end row.
- the coil end 56 is not in contact with the frame 11.
- a gap that is sufficiently smaller than the average gap between the coil ends is formed between the coil end 56 and the frame 11.
- Coil end rows 50a and 50b are blown from cooling fan 33 The cooling air is discharged toward the rear side. The cooling air is discharged in the opposite direction on the rear side and is directed toward the front side.
- coil end rows 50c and 50d may be formed along the axial direction.
- coil end rows 50c and 50d are formed for each of the phases X, Y, and ⁇ , and these coil end rows are laminated in the radial direction to form a coil end portion 54.
- a relatively large gap is formed between the coil end rows 50c and 50d, and is opened at the axial end surface of the coil end portion 54.
- the gap between the coil end row 50c located on the outer periphery and the frame 11 is smaller than the average gap between the coil ends.
- the cooling air from the cooling fan 33 flows in from the axial end face of the coiled portion 54 as shown by the arrow in FIG. 8 and is discharged through the gap between the coiled ends in a row.
- the coil end may be formed in a funnel shape so as to surround a cooling fan attached to an end of the rotor.
- the inner surface of the coil 54 is formed in a funnel shape inclined at an angle along the outer peripheral surface of the cooling fan 33.
- the gap D between the coil end 56 located on the outer shell of the coil end portion 54 and the frame is set substantially equal to the diameter d of the wire of the coil end 56.
- the configuration in FIG. 9 may be configured such that when the coil end portion is accommodated in the frame, the coil end portion is deformed by contacting the frame. In this case, the heat transfer to the frame is increased as a result of the increased contact with the frame, and at the same time, the coiled portion can be arranged over the entire area in which the air discharged from the cooling fan is strong. Can be used effectively.
- the force described the armature coils of a single-layer wave winding may be adopted a two-layer ⁇ as armature coils.
- a coil end group divided into two layers can be obtained at the coil end part and further divided into two layers, so that a relatively simple manufacturing method can be used inside the coil end part.
- a gap can be formed.
- Such a two-layer winding is a two-layer wave winding as disclosed in Japanese Patent Publication No. 3-73225 or a two-layer winding as shown in FIGS. 10, 11 and 12. 3 7 ⁇ short section winding wire can be adopted.
- the coil ends are separated and extend from one slot toward both sides in the circumferential direction, so that the effect of easily securing a gap between the coil ends is improved. is there.
- the three phases are arranged in the two-pole pitch of the rotor, and the coil 51 a of the first layer is arranged.
- 52 a, and 53 a, the coils 51 b, 52 b, and 53 b of the second layer are arranged at an electrical angle of 60 °.
- the auxiliary magnet 35 constitutes a wind pressure partition, and the force for improving the radially outward blowing effect by the side wall of the U-shaped opening between the claws of the Landel-type pole core.
- a plate 370 as a dedicated wind pressure partition is mounted on the rotor 300 May be.
- the fan blades 331 and 341 of the cooling fans 330 and 340 provided on the end face of the rotor 300 on the extension of the side wall of the U-shaped opening, it is synergistic.
- the air blowing capacity can be increased.
- the present invention may be applied to a so-called external fan generator as shown in FIG.
- the cooling fan 331 installed on the front side enters the generator through the inlet openings 140 and 150 opened on the outer peripheral surface of the generator, passes through the generator and passes through the cooling fan.
- 3 3 1 causes a flow of cooling air sucked out of the generator.
- cool outside air is directly introduced into the coil end portions 540 and 550 from the outer periphery of the generator, and excellent heat dissipation is obtained.
- a plurality of coil ends are arranged almost evenly over the entire cooling air passage, and the ventilation resistance inside the coil end portion is lower than that around the coil end portion, so that the inside of the coil end portion is formed. It is important that they are easily ventilated.
- the force obtained by winding the armature coil 50 by using a wire having a circular cross section; ' this may be a non-circular polygonal cross section.
- a wire 560 having a square cross section composed of a copper wire 560a and an organic insulating film 560b with rounded corners, and a film 560
- the thickness of the organic insulating film applied to the strand is about 80% to about 40% of the thickness of the second type film. The one that has been used exhibits a high effect.
- the wire can be from 400 to 200 ° .
- "super-resistant coating wire” manufactured by Furukawa Electric Co., Ltd. or “scratch-resistant thin coating wire” manufactured by Sumitomo Electric Co., Ltd. can be used. Industrial applicability
- a gap is provided between the wires in the coil end portion, and the coil end portion can be satisfactorily cooled by the flow of the cooling air passing through the gap. This suppresses the temperature rise at the coil end.
- the present invention can be used for a vehicle alternator, and can meet the demand for a small and high output.
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54075197A JP3780528B2 (ja) | 1997-03-10 | 1997-10-20 | 車両用交流発電機 |
DE69704773T DE69704773T2 (de) | 1997-03-10 | 1997-10-20 | Wechselstromgenerator für kraftfahrzeuge |
EP97944186A EP0915557B1 (en) | 1997-03-10 | 1997-10-20 | Ac generator for vehicle |
US09/004,923 US5955804A (en) | 1997-03-10 | 1998-01-09 | Alternator winding arrangement with coil ends spaced apart from one another for air passage |
US09/333,028 US6166461A (en) | 1997-03-10 | 1999-06-15 | Winding arrangement of alternator for vehicle |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5498897 | 1997-03-10 | ||
JP9/54988 | 1997-03-10 | ||
JPPCT/JP97/01840 | 1997-05-28 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/004,923 Continuation US5955804A (en) | 1997-03-10 | 1998-01-09 | Alternator winding arrangement with coil ends spaced apart from one another for air passage |
US09/333,028 Continuation US6166461A (en) | 1997-03-10 | 1999-06-15 | Winding arrangement of alternator for vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998040956A1 true WO1998040956A1 (fr) | 1998-09-17 |
Family
ID=12986042
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/001840 WO1998040953A1 (fr) | 1997-03-10 | 1997-05-28 | Alternateur pour vehicule |
PCT/JP1997/003789 WO1998040956A1 (fr) | 1997-03-10 | 1997-10-20 | Generateur de courant alternatif pour vehicule |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/001840 WO1998040953A1 (fr) | 1997-03-10 | 1997-05-28 | Alternateur pour vehicule |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP0989657B1 (ja) |
DE (1) | DE69732578T2 (ja) |
WO (2) | WO1998040953A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000299950A (ja) * | 1999-04-12 | 2000-10-24 | Denso Corp | 車両用交流発電機 |
JP2001238386A (ja) * | 2000-02-24 | 2001-08-31 | Mitsubishi Electric Corp | 交流発電機 |
JP2007524335A (ja) * | 2003-07-10 | 2007-08-23 | マグネティック アプリケーションズ インコーポレイテッド | コンパクト高出力オルタネータ |
JP2015159723A (ja) * | 2015-04-28 | 2015-09-03 | 三菱電機株式会社 | 回転電機 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3250533B2 (ja) | 1998-11-25 | 2002-01-28 | 株式会社デンソー | 車両用交流発電機の固定子及びその製造方法 |
JP3650303B2 (ja) * | 2000-02-29 | 2005-05-18 | 三菱電機株式会社 | 交流発電機 |
JP3832392B2 (ja) * | 2002-06-25 | 2006-10-11 | 株式会社デンソー | 回転電機のセグメント順次接合ステータコイルおよびその製造方法 |
JP3786059B2 (ja) * | 2002-06-25 | 2006-06-14 | 株式会社デンソー | 回転電機のセグメント順次接合ステータコイルおよびその製造方法 |
DE102008022105B4 (de) * | 2008-04-09 | 2023-11-09 | Liebherr-Electronics and Drives GmbH | Flüssigkeitsgekühlte elektrische Maschine sowie Verfahren zur Kühlung einer solchen elektrischen Maschine |
FR2993421B1 (fr) * | 2012-07-11 | 2015-08-07 | Valeo Equip Electr Moteur | Machine electrique tournante pour vehicule automobile |
FR2993419B1 (fr) * | 2012-07-11 | 2016-01-01 | Valeo Equip Electr Moteur | Machine electrique tournante pour vehicule automobile |
FR2993420B1 (fr) * | 2012-07-11 | 2016-01-01 | Valeo Equip Electr Moteur | Machine electrique tournante pour vehicule automobile |
FR3020212B1 (fr) * | 2014-04-17 | 2017-11-03 | Valeo Equip Electr Moteur | Machine electrique tournante a refroidissement optimise |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55147941A (en) * | 1979-05-07 | 1980-11-18 | Mitsubishi Electric Corp | Ventilation cooling system for rotary electric machine |
JPS6359744A (ja) * | 1986-08-28 | 1988-03-15 | Mitsuba Electric Mfg Co Ltd | 車両用発電機のステ−タコイル構造 |
JPH0127406Y2 (ja) * | 1982-04-28 | 1989-08-16 | ||
JPH0424939B2 (ja) * | 1983-03-01 | 1992-04-28 | Nippon Denso Co |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59111482U (ja) * | 1983-01-17 | 1984-07-27 | 株式会社東芝 | 直流機 |
US4908541A (en) * | 1986-08-28 | 1990-03-13 | Mitsuba Electric Mfg., Co., Ltd. | Air-cooled layered coil vehicle AC generator stator |
JPH01123452U (ja) * | 1988-02-18 | 1989-08-22 |
-
1997
- 1997-05-28 WO PCT/JP1997/001840 patent/WO1998040953A1/ja active Application Filing
- 1997-10-20 EP EP99118718A patent/EP0989657B1/en not_active Expired - Lifetime
- 1997-10-20 WO PCT/JP1997/003789 patent/WO1998040956A1/ja active IP Right Grant
- 1997-10-20 EP EP97944186A patent/EP0915557B1/en not_active Revoked
- 1997-10-20 DE DE69732578T patent/DE69732578T2/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55147941A (en) * | 1979-05-07 | 1980-11-18 | Mitsubishi Electric Corp | Ventilation cooling system for rotary electric machine |
JPH0127406Y2 (ja) * | 1982-04-28 | 1989-08-16 | ||
JPH0424939B2 (ja) * | 1983-03-01 | 1992-04-28 | Nippon Denso Co | |
JPS6359744A (ja) * | 1986-08-28 | 1988-03-15 | Mitsuba Electric Mfg Co Ltd | 車両用発電機のステ−タコイル構造 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0915557A4 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000299950A (ja) * | 1999-04-12 | 2000-10-24 | Denso Corp | 車両用交流発電機 |
JP2001238386A (ja) * | 2000-02-24 | 2001-08-31 | Mitsubishi Electric Corp | 交流発電機 |
JP2007524335A (ja) * | 2003-07-10 | 2007-08-23 | マグネティック アプリケーションズ インコーポレイテッド | コンパクト高出力オルタネータ |
JP4743786B2 (ja) * | 2003-07-10 | 2011-08-10 | マグネティック アプリケーションズ インコーポレイテッド | コンパクト高出力オルタネータ |
JP2015159723A (ja) * | 2015-04-28 | 2015-09-03 | 三菱電機株式会社 | 回転電機 |
Also Published As
Publication number | Publication date |
---|---|
EP0915557A4 (ja) | 1999-05-12 |
EP0989657B1 (en) | 2005-02-23 |
EP0915557B1 (en) | 2001-05-09 |
DE69732578T2 (de) | 2005-12-29 |
DE69732578D1 (de) | 2005-03-31 |
EP0915557A1 (en) | 1999-05-12 |
EP0989657A3 (en) | 2000-04-19 |
WO1998040953A1 (fr) | 1998-09-17 |
EP0989657A2 (en) | 2000-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5955804A (en) | Alternator winding arrangement with coil ends spaced apart from one another for air passage | |
US6486586B2 (en) | Alternator | |
US6268678B1 (en) | Alternator | |
JP4501762B2 (ja) | 車両用交流発電機 | |
JP3593059B2 (ja) | 車両用交流発電機 | |
JP3456140B2 (ja) | 車両用交流発電機 | |
KR100367031B1 (ko) | 차량용 교류발전기 | |
JP4007476B2 (ja) | 車両用交流発電機 | |
US6366000B1 (en) | Alternator | |
WO1998040956A1 (fr) | Generateur de courant alternatif pour vehicule | |
JP3744184B2 (ja) | 車両用交流発電機 | |
US6373166B1 (en) | Alternator | |
EP1750351B1 (en) | Alternator for vehicle | |
KR100453492B1 (ko) | 차량용 교류발전기 | |
JP3780528B2 (ja) | 車両用交流発電機 | |
JP4186316B2 (ja) | 車両用交流発電機 | |
JP3715894B2 (ja) | 車両用交流発電機 | |
EP1109295B1 (en) | Winding heads for the stator of an alternator | |
EP1109294B1 (en) | Alternator | |
EP0881753B1 (en) | Cooling arrangement of alternator | |
KR20060036052A (ko) | 차량용 교류 발전기 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1998 4923 Date of ref document: 19980109 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1997944186 Country of ref document: EP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1997944186 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1997944186 Country of ref document: EP |