CN1661887A - rotating electrical machine - Google Patents
rotating electrical machine Download PDFInfo
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- CN1661887A CN1661887A CN 200410008284 CN200410008284A CN1661887A CN 1661887 A CN1661887 A CN 1661887A CN 200410008284 CN200410008284 CN 200410008284 CN 200410008284 A CN200410008284 A CN 200410008284A CN 1661887 A CN1661887 A CN 1661887A
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Abstract
Stator coil of electric rotating motor is composed of multiple pieces of conducting wires. The wires include large numbers of straight-line parts and large numbers of curved line parts. The straight-line parts are accommodated inside cutting grooves. Including coil terminals in front side and coil terminals in back side formed on two sides of stator core, the curved lines connect straight-line part, which forms pair of cutting grooves separated in specified number of grooves. Each straight-line part along circumferential direction is arranged in depth direction of groove in alternated between inner layer and outer layer. Each curved line along circumferential direction is arranged in certain interval. Cooling air is fed to case through air intake holes and poured out through exhaust holes.
Description
Technical field
The present invention relates to be fixed with the electric rotating machine of the centrifugal fan of cooling coil end in the end of rotor.
Background technology
Figure 18 is the profile of the traditional vehicle-mounted dlternator structure of expression, and Figure 19 and Figure 20 are respectively the front elevation that expression is applicable to the centrifugal fan of the front side of rotor of traditional vehicle-mounted dlternator and rear side.
The structure of this vehicle-mounted dlternator is in the housing 3 that side arm 1 and after-frame 2 by aluminum constitute, by axle 6 Landon type (ラ Application De Le type) rotor 7 is installed with freely rotating, is fixing the stator 8 that covers rotor 7 outer circumferential side shapes at the internal face of housing 3.
Axle 6 is supported on side arm 1 and the after-frame 2 pivotally.Fixing belt pulley 4 at this end of 6, the rotary torque of engine can passed to axle 6 by belt (not shown).
Be fixed in the other end of axle 6 to the slip ring 9 of rotor 7 power supply, a pair of brush 10 is incorporated in the brushgear housing 11 that is provided in the housing 3 with this slip ring 9 with slipping.Adjuster 18 is used to adjust the alternating voltage size that is produced by stator 8, engages with the fin that is flush-mounted in brushgear housing 11 (Japanese: ヒ one ト シ Network) 17.In housing 3, be installed with and be connected with stator 8 electric property and be the rectifier 12 of direct current the AC rectification that produces by stator 8.
In the vehicle-mounted dlternator of this structure, electric current is supplied with to rotor coil 13 by brush 10 and slip ring 9 from storage battery (not shown), produces magnetic flux.Utilize this magnetic flux, make the claw-like magnetic pole 22 of side's pole core 20 be magnetized into the N utmost point, the claw-like magnetic pole 23 of the opposing party's pole core 21 is magnetized into the S utmost point.On the other hand, the rotary torque of engine passes to axle 6 by belt and belt pulley 4, makes rotor 7 revolutions.At this moment, give rotating magnetic field, make stator coil 16 produce electromotive force to stator coil 16.The electromotive force of this interchange is adjusted to direct current by rectifier 12, and its size is adjusted by adjuster 18 simultaneously, to charge in batteries.
In this vehicle-mounted dlternator, rotor coil 13, stator coil 16, rectifier 12 and adjuster 18 be always heating in generating, in other generator of output-current rating 100A level, under the revolving conditions of high-temperature, has the development of heat of 60W, 500W, 120W and 6W respectively.
Thus, in order to cool off the heat that produces because of generating, side arm 1 and after-frame 2 are provided with suction hole 1a, 2a and steam vent 1b, 2b.Specifically, as shown in figure 18,, be provided with a plurality of suction hole 1a, 2a,, be provided with a plurality of steam vent 1b, 2b along circumferential array at side arm 1 and after-frame 2 sagittal plane (side) separately along circumferential array at side arm 1 and after-frame 2 axis direction face (end face) separately.
Shown in the arrow among Figure 18, at rear side, utilize the revolution of the centrifugal fan 5B of rear side, outer gas is inhaled in the housing 3 by suction hole 2a, rectifier 12 and adjuster 18 are cooled off, by centrifugal fan 5B, cool off the rear side coil-end 16r of stator coil 16 crooked back on centrifugal direction, discharges to the outside from steam vent 2b then again.
On the other hand, shown in the arrow among Figure 18, in the front side, utilize the revolution of the centrifugal fan 5A of front side, outer gas is inhaled in the housing 3 by suction hole 1a, by centrifugal fan 5A, cool off the front side coil-end 16f of stator coil 16 crooked back on centrifugal direction, discharges to the outside from steam vent 1b then again.And, utilize the pressure differential of front side and rear side, cooling air by in the rotor 7 in the past effluents to rear side stator coil 13 is cooled off.
In traditional vehicle-mounted dlternator, as shown in figure 21, the front side coil-end 16f of stator coil 16 and rear side coil-end 16r are between the grooving of the grooving number that separates regulation, a plurality of end windings of reeling plural number circle lead and forming are installed in the stator core 15, end winding at the internal side diameter that is adjacent to centrifugal fan 5A, 5B, pipe directly contacts with cooling air, cooling effectiveness is good, but the problem that exists is the end winding of outside diameter is covered by the end winding of internal side diameter, be not easy to contact with cooling air, cooling effectiveness is variation correspondingly.
The present invention will solve above-mentioned such problem as problem, and its purpose is, a kind of electric rotating machine that can improve the stator coil cooling effectiveness is provided.
Summary of the invention
Electric rotating machine of the present invention comprises: by side arm and after the housing that is configured to; Have the revolution of being fixed on and be arranged at the rotor of a pair of claw-pole type pole core on the axle in this housing freely; Be fixed in the belt pulley of the described shaft end of described side arm side; Be provided in the rectifier of the described after-frame side of the described rotor in the described housing; Be arranged at the centrifugal fan at the axis direction both ends of described rotor; And be bearing on described side arm and the described after-frame, with the stator that the periphery of described rotor coats, described stator has: at interior all side openings grooving is arranged, along circumferentially leaving the stator core a plurality of cylindraceous that the compartment of terrain extends to form towards described axis direction; And be wrapped in stator coil in this stator core, and this stator coil is made of multiple conducting wires, and this lead comprises: be incorporated in a large amount of line parts in the described grooving; And the end of the paired line part of the grooving number that will separate regulation in the grooving outside connects each other, form a large amount of round parts of coil-end in the both sides of described stator core, the described line part of each described lead is circumferential along described stator core, internal layer repeatedly is configured on the cutting groove depth direction with the outer shape that replaces mutually, the described round part of each of each described lead made progress in described week, with certain interval and skewed in the same direction setting, it is characterized in that, the cooling air that is produced by the action of described centrifugal fan, the suction hole of each self-forming flows in described housing from the described axis direction of described side arm and described after-frame, the steam vent that upwards forms separately from the described footpath of described side arm and described after-frame flows out simultaneously, in addition, in described housing, logical by described rotor to described after-frame effluent from described side arm side.
The present invention can improve the cooling effectiveness of stator coil.
The simple declaration of accompanying drawing
Fig. 1 is the profile of the vehicle-mounted dlternator in the expression the invention process form 1.
Fig. 2 is the figure of expression centrifugal fan wind pushing performance shown in Figure 1.
Fig. 3 is applicable to the stereogram of the coil segment of stator shown in Figure 1 for expression.
Fig. 4 be assembled with for expression coil segment shown in Figure 3 stator want portion's side view.
When seeing the stator that is assembled with coil segment shown in Figure 3 for expression from the front side, Fig. 5 wants portion's stereogram.
Fig. 6 is the stereogram of the rotor in the expression embodiment of the invention 1.
Fig. 7 is the front elevation of the centrifugal fan of expression front side shown in Figure 6.
Fig. 8 is the front elevation of the centrifugal fan of expression rear side shown in Figure 6.
Fig. 9 is the sectional side view of the variation of the stator of the vehicle-mounted dlternator of expression the invention process form 1.
Figure 10 be Fig. 9 want portion's enlarged drawing.
Figure 11 wants portion's profile for the vehicle-mounted dlternator in the expression the invention process form 2.
Figure 12 is applicable to the stereogram of the stator of the vehicle-mounted dlternator in the invention process form 3 for expression.
Figure 13 (a) is the side view of the winding assembly of expression formation stator coil shown in Figure 12, and Figure 13 (b) is the front elevation of Figure 13 (a).
Figure 14 wants portion's stereogram for the continuous lines that expression constitutes winding assembly shown in Figure 13.
Figure 15 is the figure of the continuous lines assortment of explanation Figure 14.
Figure 16 is the plane graph of the wiring state of 1 phase of the stator coil in the explanation stator shown in Figure 12.
Figure 17 is a stator loop diagram shown in Figure 12.
Figure 18 is the profile of the traditional vehicle-mounted dlternator of expression.
Figure 19 is the front elevation of the centrifugal fan of expression front side shown in Figure 180.
Figure 20 is the front elevation of the centrifugal fan of expression rear side shown in Figure 180.
Figure 21 is the stereogram of expression stator shown in Figure 180.
Embodiment
The following describes each example example of the present invention.With Figure 18～same or considerable part mark prosign of traditional vehicle-mounted dlternator shown in Figure 21, omit its explanation.
Example 1
Fig. 1 is the profile of the vehicle-mounted dlternator in the expression the invention process form 1, Fig. 2 is the figure of expression centrifugal fan wind pushing performance shown in Figure 1, Fig. 3 constitutes the stereogram of the coil segment that roughly is the U font of stator coil shown in Figure 1 for expression, Fig. 4 be assembled with for expression coil segment shown in Figure 3 stator want portion's side view, Fig. 5 wants portion's stereogram for the stator of representing to be assembled with coil segment shown in Figure 3.
Among each figure, front side centrifugal fan 40 is fixed on the anterior end surface of the pole core 20 of rotor 7, and rear side centrifugal fan 41 is fixed on the rear side end face of pole core 20 of rotor 7.And front side centrifugal fan 40 has the wind pushing performance of the curve A 1 among Fig. 2, and rear side centrifugal fan 41 has the wind pushing performance of the curve A 2 among Fig. 2.That is, rear side centrifugal fan 41 has adopted than the big centrifugal fan of front side centrifugal fan 40 abilities.In addition, the ability of so-called centrifugal fan, the pressure differential size before and after the centrifugal fan when being meant the traffic flow with regulation ventilates during with same traffic flow, produces big pressure differential, and its ability is big more.
The 3 cross streams windings structure that the lead that the structure of stator coil 36 is connected by a large amount of coil segments 30 is formed.This coil segment 30 has adopted the conductor of the copper of the section rectangle that insulation film coats etc., by diastrophic connecting portion 30b a pair of line part 30a is linked, and is roughly U word shape.In addition, coil segment 30 is in advance with the interval between a pair of line part 30a, makes corresponding to the interval of 3 grooving sizes.Again with a pair of line part 30a of this coil segment 30, insert grooving 15b of each group separate the pairing of 2 grooving numbers from rear side respectively, then, after extending to the extension warpage of each line part 30a of front side, 30c engages each other with open end, makes integral body for example and be 1 group 3 cross streams windings.In addition, the so-called group that separates the grooving of 2 grooving numbers pairing is such as being equivalent to No. 1 circumferential grooving and the group of No. 4 grooving formation.
At this moment, these coil segments 30 make the height unanimity of connecting portion 30b as shown in Figure 4, insert the grooving 15b of each group from rear side with 2 respectively.And, in each grooving 15b, with 4 line part 30a with the length direction of rectangular section for radially, take in diametrically with being arranged into 1 row.
In the grooving 15b of each group, 1 coil segment 30 is inserted since No. 1 position of a side grooving 15b outer circumferential side with from No. 2 position that the opposing party's grooving 15b outer circumferential side begins, again other 1 coil segment 30 is inserted since No. 3 position of the outer circumferential side of a side grooving 15b and No. 4 position beginning from the outer circumferential side of the opposing party's grooving 15b.Secondly, open end 30c from the coil segment 30 of No. 1 position that grooving 15b outer circumferential side begins engages with the open end 30c of insertion from another coil segment 30 of No. 2 position that the grooving 15b outer circumferential side that separates 2 grooving numbers begins with insertion, makes the winding of outer circumferential side.To insert again from the open end 30c of the coil segment 30 of No. 3 position that grooving 15b outer circumferential side begins and engage the winding of all sides in making with the open end 30c that inserts from another coil segment 30 of No. 4 position that the grooving 15b outer circumferential side that separates 2 grooving numbers begins.Winding with outer circumferential side is connected with the windings in series shape of interior all sides then.
It is radially overlapping that the open end 30c of coil segment 30 is each other, by arc welding with junction surface (leading section of open end 30c) globality ground fusion bond.Engaged 2 open end 30c (junction surface 31) in the winding of engaged 2 open end 30c (junction surface 31) in the winding of interior all sides and outer circumferential side are lined up 1 row diametrically.Thus, the round part 32a that is made of junction surface 31 sides of coil segment 30 has constituted engage side coil-end 32 along circumferentially being configured to 2 row.
At this moment, engaged 2 open end 30c are radially overlapping with respect to the minor face of rectangular section, by arc welding the leading section melt-through are engaged.
In addition, the connecting portion 30b of coil segment 30 becomes 2 rows along circumferential assortment, has constituted turning lateral coil end 33.
The round part of the round part 32a of formation engage side coil-end 32, formation turning lateral coil end 33 is connecting portion 30b, makes progress in the week of stator core 15 respectively, with certain interval and inclination in the same direction.
The stator 35 of this structure is that the position that the open end 30c of coil segment 30 engages the engage side coil-end 32 that constitutes is placed the front side, and the position of the turning lateral coil end 33 that will be made of connecting portion 30b places rear side, is assembled in the vehicle-mounted dlternator.That is, the engage side coil-end 32 of stator coil 36 is equivalent to front side coil-end 36f, and turning lateral coil end 33 is equivalent to rear side coil-end 36r.
The operating point of the centrifugal fan in this example 1 is described below with reference to Fig. 2.Among Fig. 2, A1 represents the wind pushing performance curve of front side centrifugal fan 40, and A2 represents the wind pushing performance curve of rear side centrifugal fan 41, and Rf represents the wind path crushing curve of the ventilating path of front side, and Rr represents the wind path crushing curve of the ventilating path of rear side.
Among Fig. 2, the operating point of front side centrifugal fan 40 is exactly the intersection point of curve A 1 and curve Rf, and the operating point of rear side centrifugal fan 41 is exactly the intersection point of curve A 2 and curve Rr.That is, use front side centrifugal fan 40 can obtain air quantity Q3, blast P3, use rear side centrifugal fan 41 can obtain air quantity Q2, blast P2.In addition, Q2＜Q3, P2＞P3.
At this moment, the air quantity of the cooling air that flows through the front side ventilating path that flows in the side arm 1, discharges from steam vent 1b after the centrifugal direction bending by centrifugal fan 40 from suction hole 1a will be more than the air quantity of the cooling air that flows through the rear side ventilating path that flows into from suction hole 2a in the after-frame 2, discharges from steam vent 2b after the centrifugal direction bending by centrifugal fan 41.In addition, flow into the part of the cooling air of front side, by flowing to rear side in the rotor 7.
At this, as the centrifugal fan of front side and rear side, when using the centrifugal fan of the wind pushing performance curve with A1 jointly, the operating point of the centrifugal fan of front side and rear side is respectively (Q3, P3) and (Q1, P1).In addition, Q1＜Q2＜Q3, P2＞P1＞P3.
Thus, as the centrifugal fan 41 of rear side, when use had the centrifugal fan of wind pushing performance curve of A2, the operating point of rear side centrifugal fan 41 was exactly (Q2, P2).That is,, can rise to Q2 from Q1 so flow through the air quantity of the cooling air of rear side ventilating path because of the ability change of rear side centrifugal fan 41 is big.At this moment, the ability of rear side centrifugal fan 41 is configured to: the air quantity that flows through the cooling air of rear side ventilating path can not surmount the air quantity of the cooling air that flows through the front side ventilating path.
Like this, in this example 1, the air quantity of cooling air that flows through the front side ventilating path is greater than the air quantity of the cooling air that flows through the rear side ventilating path, and the ability of rear side centrifugal fan 41 turns round under this state greater than the ability of front side centrifugal fan 40.
Owing to can make the air quantity of front side of coil-end cooling of stator coil 36 bigger effectively than the air quantity of rear side, therefore can fully cool off stator coil 36, the temperature that can restrain stator coil 36 rises.And, because the ability of rear side centrifugal fan 41 greater than the ability of front side centrifugal fan 40, therefore can fully be guaranteed the air quantity of rear side, can fully cool off rectifier 12 and adjuster 18, the temperature that can restrain rectifier 12 and adjuster 18 rises.Thereby obtain to improve the vehicle-mounted dlternator of whole cooling effectiveness.
Again since the air quantity of the little front side of draft loss greater than the air quantity of the big rear side of draft loss, thereby obtain to restrain the vehicle-mounted dlternator that sound of the wind worsens.
Because stator coil 36 is coil segments 30 by a large amount of short sizes with rectangular section is formed by connecting, therefore can improve the occupation efficiency (space factor) of 30 couples of grooving 15b of coil segment again, can improve power output.
Again because coil segment 30 is roughly U word shape, therefore, by coil segment 30 is inserted in the grooving 15b from stator core 15 1 sides, will engage each other from the extended open end 30c of the opposite side of stator core 15, can obtain the stator coil 36 of package in stator core 15.Thus, can make the stator coil 36 of package simply in stator core 15.
Owing to having, engage side coil-end 32 is removed the junction surface 31 that insulation film has improved exothermicity again, be configured in the big front side of air quantity, therefore, the heat of stator coil 36 is emitted effectively from engage side coil-end 32, the temperature that can restrain stator coil 36 effectively rises.
Again owing to constitute each round part 32a of engage side coil-end 32, in week of stator core 15 upwards with certain interval and regular obliquely carry out assortment in the same direction, therefore, flow sleekly by the gap between round part 32a from the cooling air of front side centrifugal fan 40, can improve the cooling effectiveness of engage side coil-end 32.
Again because the round part of formation turning lateral coil end 33 is connecting portion 30b, in week of stator core 15 upwards with certain interval and regular obliquely carry out assortment in the same direction, therefore, flow sleekly by the gap between connecting portion 30b from the cooling air of rear side centrifugal fan 41, can improve the cooling effectiveness of turning lateral coil end 33.
Below, specifically the centrifugal fan structure that is applicable to vehicle-mounted dlternator of the present invention is made an explanation.
Fig. 6 is applicable to the stereogram of embodiment 1 of the rotor of vehicle-mounted dlternator of the present invention for expression.Fig. 7 and Fig. 8 are respectively expression and are applicable to the front side centrifugal fan of rotor shown in Figure 6 and the front elevation of rear side centrifugal fan
Assembling is equipped with the vehicle-mounted dlternator of rotor of centrifugal fan 40A, the 41A of this structure, with the rotation speed operation of 5000rpm the time, and the suction air quantity Qf of front side
INBe 0.05m
3The draft capacity Qf of/s, front side
OUTBe 0.048m
3The suction air quantity Qr of/s, rear side
INBe 0.033m
3The draft capacity Qr of/s, rear side
OUTBe 0.035m
3/ s, in the past effluent is to the air quantity Q of rear side
F → rBe 0.002m
3/ s.
Adopt present embodiment 1, because the fin chord length (BLr) of rear side centrifugal fan 41A is longer than the fin chord length (BLf) of front side centrifugal fan 40A, the ability of the energy force rate front side centrifugal fan 40A of rear side centrifugal fan 41A is big, and, the suction air quantity Qf of front side
INWith draft capacity Qr
OUTSuction air quantity Qf than rear side
INWith draft capacity Qr
OUTGreatly.
Can realize the effect of the foregoing description 1 thus.
Again because the fin piece number of centrifugal fan 40A, the 41A of front side and rear side has been made 10 pieces, be that 8 pieces conventional case is compared therefore with fin piece number, can increase air quantity, the temperature that can restrain stator coil 36, rectifier 12 and adjuster 18 rises.
But, because each round part 32a of front side coil-end 36f and each round part of rear side coil-end 36r are connecting portion 30b, respectively along stator core 15 circumferentially with certain interval, tilt in the same direction and carry out assortment regularly, therefore, cooling air flows by the gap between each round part 32a, each connecting portion 30b, although the cooling effectiveness of coil-end 36f, 36r is good, but, become big problem so the wind noise occurred because of this cooling air conflicts with each round part 32a, each connecting portion 30b of inclination.
Fig. 9 and Figure 10 are exactly in order to solve this bad phenomenon, inner peripheral surface at front side coil-end 36f and rear side coil-end 36r, near the both ends of the surface of stator core 15 the ventilating part 71,72, resin system insulating trip 70a, 70b as level and smooth member are installed, in front side coil-end 36f one side, except near stator core 15, prevent that each round part 32a that cooling air and internal side diameter tilt from clashing.Therefore can restrain the wind noise.In addition, in rear side coil-end 36r one side, except near stator core 15, prevent that each connecting portion 30b that cooling air and internal side diameter tilt from clashing, and therefore can restrain the wind noise.
In this example, on side arm 1, from the cooling air that suction hole 1a flows into, a part is discharged to the outside from steam vent 1b, and a part is conflicted with front side coil-end 36f on one side by ventilating part 71, from steam vent 1b to outside discharge on one side.And a part is utilized the pressure differential in the housing 3, and mainly the spatial portion of the claw-like magnetic pole 22,23 by adjacency flows to rear side coil-end 36r, conflict with rear side coil-end 36r on one side by ventilating part 72, and discharge to the outside from steam vent 2b on one side.
In addition, on after-frame 2, from the cooling air that suction hole 2a flows into, conflict with rear side coil-end 36r in one side, discharges to the outside from steam vent 2b on one side.
In addition, as level and smooth member, can with resin fill in the round part 32a of circumferential adjacency, gap between connecting portion 30b,, also can be sheet material made of paper both to replace insulating trip 70a, 70b.In a word, in the part of the inner peripheral surface of coil-end 36f, 36r, so long as cooling air does not get final product at the material of radially passing through, shape and level and smooth object.Certainly, for this flatness, also can have concavo-convex slightly.
Example 2
In this example 2, as shown in figure 11, the axis direction height (CLf) of the front side coil-end 36f of stator coil 36 is than axis direction height (CLr) height of rear side coil-end 36r, and, the lap (Of) of the axis direction of front side coil-end 36f and centrifugal fan 40 is bigger than the lap (Or) of the axis direction of rear side coil-end 36r and centrifugal fan 41, carries out the configuration of stator 35 by this state.That is, CLr＜CLf, Or＜Of.In addition, other structure is identical with above-mentioned example 1.
Adopt this example 2, stator 35 is configured to: the axis direction height (CLf) of the front side coil-end 36f of stator coil 36 is than axis direction height (CLr) height of rear side coil-end 36r.Can reduce to be exposed to the volume of the coil-end in the cooling air of rear side of cooling effectiveness difference thus, and can increase the volume of the coil-end in the cooling air that is exposed to the good front side of cooling effectiveness, can cool off stator coil 36 effectively.
In addition, stator 35 is configured to: the lap (Of) of the axis direction of front side coil-end 36f and centrifugal fan 40 is bigger than the lap (Or) of the axis direction of rear side coil-end 36r and centrifugal fan 41.The volume of the coil-end in the cooling air that is exposed to the good front side of cooling effectiveness can be increased thus, stator coil 36 can be cooled off effectively.
In addition, in this example 1,2, used the coil segment 30 that roughly is U word shape, but the present invention is not limited to the coil segment 30 that roughly is U word shape, coil segment is the conductor piece of the short chi shape that extends of linearity also.
Example 3
In the stator coil 36 of above-mentioned example 1,2, the winding structure of the regulation that the lead that has adopted the coil segment 30 by a large amount of short chi shapes to connect to form is made, but in this example 3, each lead is to be made of 1 continuous lines, has been formed the stator coil of the winding structure of regulation by this lead.
Figure 12 is the stereogram of the stator of the vehicle-mounted dlternator of expression the invention process form 3, among the figure, for convenience of explanation, omitted the wire connecting portion of overlap joint line etc.
Among Figure 12, stator 81 makes progress in week, with etc. angular separation be provided with a plurality of roughly 50a of tooth portion of rectangular section shape that are, formation is the inside state that stretches out of side towards the footpath, and the grooving 50b that axis direction extends comprises: the stator core 50 that is made of the cylindric laminate core that is formed between the 50a of tooth portion; Package is in the stator coil 51 of stator core 50; And be installed in the grooving 50b, make the insulator 52 of stator core 50 and stator coil 51 electric insulations.And stator coil 51 has coil-end 51f, the 51r to the front side of stator core 50 and rear side extension.
Stator coil 51 has and radially is adapted to 2 row, 2 groups winding assemblies 60 shown in Figure 13.Each winding assembly 60 is that 1 continuous lines 61 as lead is turned back in the outside of the grooving 50b of the end face side of stator core 50, with every regulation grooving number, depth direction waveform coiling along grooving in grooving 50b forms internal layer and the outer form that replaces, and is wrapped in the stator core 50.At this moment, corresponding with the number of magnetic poles (16) of rotor 7 in stator core 50, equally spaced be formed with 96 grooving 50b, contain 2 group of 3 phase stator winding group 53 described later.That is, the grooving number of every extremely every phase is 2.In addition, continuous lines 61 has been used the continuous lines of the copper wire material that for example is insulated flat section of being of film coating.
Below with reference to Figure 13 to Figure 15, specify the structure of winding assembly 60.Figure 13 is the figure of the winding assembly of the stator coil in the expression formation stator shown in Figure 12, and Figure 13 (a) is its side view, and Figure 13 (b) is its front elevation.Figure 14 wants portion's stereogram for representing the continuous lines that constitutes stator coil shown in Figure 12, and Figure 15 constitutes the figure of the continuous lines arrangement of stator coil shown in Figure 12 for explanation.
The lead that constitutes winding assembly 60 be each continuous lines 61 as shown in figure 14, formed the line part 61b that connects by round part 61a plane figure with 6 kerf spacings (6P) assortment.And stagger width (W) size of continuous lines 61 of the line part 61b of adjacency is connected by round part 61a.2 continuous lines 61 that formed this figure as shown in figure 15, with the overlapping shape assortment of line part 61b, it is right to have constituted continuous lines with 6 kerf spacings that stagger.Continuous lines assembly 60 is that the continuous lines of such assortment is right as shown in figure 13, and each becomes 6 pairs and constitute to separate 1 kerf spacing ground assortment.And respectively there are 6 both sides that extend to continuous lines assembly 60 two ends the end of continuous lines 61.In addition, constitute the both sides of the round part 61a assortment fitly of coil-end at continuous lines assembly 60.
With 2 groups of winding assemblies 60 of this structure radially in stator core 50 package become 2 row, connect each continuous lines 61, make the spiral structure of regulation.The round part 61a that extends to the continuous lines 61 of the end face rear flank of stator core 50 turning back has formed coil-end.At this moment, at the two ends of stator core 50, the round part 61a that roughly is same shape is the neat assortment in 2 row ground and makes progress in week along circumferentially and radially sowing discord mutually, has formed coil-end 51f, the 51r of front side and rear side.
This winding assembly 60 for example, can by with 12 continuous lines at grade with 1 kerf spacing assortment, 12 continuous lines are bent to form the thunder shape simultaneously at grade, folding and make with the rectangular direction of anchor clamps again.Simultaneously, 12 continuous lines are being bent to form Lei Zhuanshi,, are forming the lead (not shown) that overlap joint line, lead-out wire and neutral point are used in the both sides of winding assembly 60 as long as the continuous lines of regulation is drawn.
Below with reference to Figure 16, specify the winding structure of the stator winding 54 of 1 phase.Among Figure 16, represent the rear side distribution of stator core 50 to dot the front side distribution with solid line.
The stator winding 54 of 1 phase is made of 62～65 of the 1st to the 4th windings that 1 continuous lines 61 is formed respectively.The 1st winding 62 is with 1 continuous lines 61, from No. 1 to No. 91 of grooving numbering every 6 groovings, will be in the grooving 50b make the waveform winding from No. 1 position (No. 1 address) of interior all sides and No. 2 position (No. 2 addresses) from interior all sides with replacing shape mutually.The 2nd winding 62 is with continuous lines 61, every 6 groovings, will make the waveform winding from No. 1 to No. 91 of grooving numbering from No. 2 addresses and No. 1 address in the grooving 50b with replacing shape mutually.The 3rd winding 64 is with continuous lines 61, every 6 groovings, will make the waveform winding from No. 1 to No. 91 of grooving numbering from No. 3 position (No. 3 addresses) of the interior all sides in the grooving 50b and No. 4 position (No. 4 addresses) from interior all sides with replacing shape mutually.The 4th winding 65 is with continuous lines 61, every 6 groovings, will make the waveform winding from No. 1 to No. 91 of grooving numbering from No. 4 addresses and No. 3 addresses in the grooving 50b with replacing shape mutually.
Like this, the 1st to the 4th winding 62～65 has constituted the winding that 1 continuous lines 61 is become 1 circle that internal layer and outer alternately shape form in the grooving 50b of per 6 groovings along the package of cutting groove depth direction respectively.And, in each grooving 50b, the length direction of the rectangular section of continuous lines 61 is alignd diametrically, line up 1 row ground assortment diametrically with 4.
Rear side in stator core 50, to engage with the end 65b of No. 91 No. 3 extended the 4th winding 65 in address of numbering from the end 63a of No. 1 No. 2 extended the 2nd winding 63 in address of grooving numbering from grooving, to engage with the end 63b of No. 91 No. 1 extended the 2nd winding 63 in address of numbering from the end 65a of No. 1 No. 4 extended the 4th winding 65 in address of grooving numbering again, formed the winding of 2 circles from grooving.
In addition, front side in stator core 50, to engage with the end 64b of No. 91 No. 4 extended the 3rd winding 64 in address of numbering from the end 62a of No. 1 No. 1 extended the 1st winding 62 in address of grooving numbering from grooving, to engage with the end 62b of No. 91 No. 2 extended the 1st winding 62 in address of numbering from the end 64a of No. 1 No. 3 extended the 3rd winding 64 in address of grooving numbering again, formed the winding of 2 circles from grooving.
Secondly, the part of the continuous lines 61 of the 3rd winding 64 that will extend to the rear side of stator core 50 from No. 4 address of No. 3 address of No. 61 of grooving numbering and No. 67 is cut off, and the part of the continuous lines 61 of the 4th winding 65 that will extend to the rear side of stator core 50 from No. 4 address of No. 3 address of No. 67 of the grooving numbering and No. 73 is cut off.Cut-out end 64c with the 3rd winding 64 engages with the cut-out end 65c of the 4th winding 65 again, has formed the be connected in series stator winding 54 of 1 phase of 4 circles formed of the 1st to the 4th winding 62～65.
In addition, the junction surface of the cut-out end 65c of the cut-out end 64c of the 3rd winding 64 and the 4th winding 65 is become overlap joint line connecting portion, the cut-out end 64d of the 3rd winding 64 and the cut-out end 65d of the 4th winding 65 are become neutral point (N) and lead-out wire (O) respectively.
Equally, package there is the grooving 50b of continuous lines 61 1 ground that respectively staggers form the stator winding 54 of 6 phases.As shown in figure 24, stator winding 54 is respectively carried out star-like wiring mutually with 3, formed the stator coil of forming by 2 group of 3 phase stator winding group 53 51.Each 3 phase stator winding group 53 is connected with rectifier 12 respectively, and the direct current output of each rectifier 12 is shape arranged side by side and connects and synthesize.
At this moment, constitute the continuous lines separately 61 of the 1st to the 4th winding 62～65, extend to the end face side of stator core 50, enter after turning back among the grooving 50b that separates 5 groovings, be rolled into waveform winding shape from 1 grooving 50b.Again each continuous lines 61 is gone up the shape that package becomes internal layer and skin to replace in the cutting groove depth direction (radially) of per 6 groovings.Then, with the 180 ° of electric angles package of reversing of staggering of the 1st winding 62 and the 2nd winding 63, constitute 1 group winding assembly 60.Equally, with the 180 ° of electric angles package of reversing of staggering of the 3rd winding 64 and the 4th winding 65, constitute 1 group winding assembly 60 in addition.
In this example 3, replace the stators 8 except using stator 81, other structure is identical with above-mentioned example 1.Therefore, this example 3 also is by adopting wantonly a kind of structure of the foregoing description 1～9, can improve whole cooling effectiveness, can reducing noise again.
In addition, also can make the axis direction height of the round part 61a that constitutes the front side coil-end be higher than the axis direction height of the round part 61a of rear side coil-end.In this occasion, the volume of the coil-end in the cooling air of rear side of cooling effectiveness difference can be reduced to be exposed to, and the volume of the coil-end in the cooling air that is exposed to the good front side of cooling effectiveness can be increased, can cool off stator coil 51 effectively.
In addition, adopt this example 3, stator coil 51 is to be formed by connecting by 6 stator winding 54, has formed 2 group of 3 phase stator winding group 53.The structure of each stator winding 54 is: 1 continuous lines 61 that will be made of a large amount of line part 61b that take in the grooving 50b and a large amount of round part 61a that end at the line part 61b of the outer abutment of grooving 50b is connected each other is accommodated and makes this line part 61b form different layers along the cutting groove depth direction in the grooving 50b of per 6 groovings.Therefore, in this example 3, compare with the above-mentioned example 1 of the coil segment 30 that uses a large amount of U word shapes, can obviously reduce the junction in the stator coil, can improve the productivity of stator, and it is softening can not produce the conductor that causes because of welding, has improved the rigidity as stator, can reduce the magnetic noise.
Above-mentioned example 3 is with 1 continuous lines 61, whenever to become the waveform winding shape of 1 circle around 1 all packages, so that alternately form different layers in the grooving of per 6 groovings, but the package of continuous lines structure is not limited to this, for example also can be with 1 continuous lines, whenever to become the waveform winding shape of 2 circles, alternately form different layers in the grooving of per 6 groovings around 1 all overlapping shape packages.
In addition, above-mentioned example has used the coil segment 30 and the continuous lines 61 of rectangular section, but coil segment and continuous lines are not limited to rectangular section, also circular section or the coil segment of circular section and the part of continuous lines formed rectangular section.
In addition, above-mentioned example is the example with angular separation such as grooving 15b (50b) are arranged to, but also can not need angular separation such as grooving 15b (50b) are arranged to, but is arranged to unequal-interval.
In addition, above-mentioned each example is as shown in Figure 2, under full blast amount condition, the ability of rear side centrifugal fan (blast) is greater than the ability of front side centrifugal fan, but in fact, in the use wind zone of vehicle-mounted dlternator, as long as the ability (blast) of rear side centrifugal fan is greater than the ability of front side centrifugal fan.In addition, in full rotary speed area, need not to keep this relation, in temperature and the problematic rotary speed area of noise, set centrifugal fan for this relation and get final product.
In addition, aspect stator winding 22, the reel 3 phase stator winding 22 in 4 weeks of conductor are described, but in the occasion that is requiring low speed more and high output, the number of turns of lead also can be around 6 weeks, around 8 weeks.
In addition, above-mentioned example is described the vehicle-mounted dlternator as electric rotating machine, and certainly, the present invention also is applicable to vehicle alternative electric generation motor, motor.
Claims (5)
1. electric rotating machine comprises:
By side arm and after the housing that is configured to;
Have the revolution of being fixed on and be arranged at the rotor of a pair of Landon type pole core on the axle in this housing freely;
Be fixed in the belt pulley of the described shaft end of described side arm side;
In described housing, be provided in the rectifier of the described after-frame side of described rotor;
Be arranged at the centrifugal fan at the axis direction both ends of described rotor; And
The stator that is bearing on described side arm and the described after-frame, the periphery of described rotor is coated,
Described stator has: grooving is arranged, form a plurality of cylindric stator cores along circumferentially leaving the compartment of terrain towards described axis direction extension at interior all side openings; And be wrapped in stator coil in this stator core,
This stator coil is made of multiple conducting wires, and this lead comprises: be incorporated in a large amount of line parts in the described grooving; And will separate the grooving number of regulation in the grooving outside and form the right a large amount of round parts that couple together, form in the both sides of described stator core coil-end each other,
The described line part of each described lead is circumferential along described stator core, internal layer repeatedly is configured on the cutting groove depth direction with the outer shape that replaces mutually, and the described round part of each of each described lead made progress in described week, with certain interval and skewed in the same direction setting, it is characterized in that
The cooling air that is produced by the action of described centrifugal fan, the suction hole of each self-forming from the described axis direction of described side arm and described after-frame and in described housing, flowing into, the steam vent that upwards forms separately from the described footpath of described side arm and described after-frame flows out simultaneously, and in described housing, logical to described after-frame effluent from described side arm side by described rotor.
2. electric rotating machine as claimed in claim 1 is characterized in that,
Described lead constitutes by have a plurality of coil segments that are U word shape that open end and pars intermedia have a diastrophic connecting portion in the end,
Each described coil segment is one distolateral from described stator core, and it is internal to be inserted into each right grooving of the formation that separates described regulation grooving number, and, engage towards the direction expansion ground that launches mutually from another distolateral extended described open end of described stator core,
The described round part that described connecting portion side by described coil segment forms constitutes the lateral coil end that turns round along circumferentially assortment, and the described round part that forms by the mutual joint of the open end of described coil segment constitutes the engage side coil-end along circumferentially assortment.
3. electric rotating machine as claimed in claim 2 is characterized in that, described engage side coil-end is configured in described side arm side.
4. electric rotating machine as claimed in claim 1 is characterized in that, each described lead is made of a continuous continuous lines respectively.
5. electric rotating machine according to any one of claims 1 to 4 is characterized in that, on the part of at least one side's of described side arm side and described after-frame side described coil-end inner peripheral surface, is provided with inner peripheral surface and makes level and smooth level and smooth member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100082845A CN100440692C (en) | 2004-02-27 | 2004-02-27 | rotating electrical machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100082845A CN100440692C (en) | 2004-02-27 | 2004-02-27 | rotating electrical machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661887A true CN1661887A (en) | 2005-08-31 |
| CN100440692C CN100440692C (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100082845A Expired - Fee Related CN100440692C (en) | 2004-02-27 | 2004-02-27 | rotating electrical machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1983765B (en) * | 2005-11-30 | 2011-03-09 | 通用电气公司 | Electromechanical device having three-dimensional stator laminations |
| CN103527747A (en) * | 2012-06-28 | 2014-01-22 | Lg伊诺特有限公司 | Motor |
| CN105226881A (en) * | 2015-11-04 | 2016-01-06 | 上海电气电站设备有限公司 | The computational methods of the supporting exciter ventilating system of a kind of high-rating generator |
| CN110994906A (en) * | 2018-10-03 | 2020-04-10 | 东芝三菱电机产业系统株式会社 | Brushless rotating electric machine |
| CN113653669A (en) * | 2020-05-12 | 2021-11-16 | 三菱电机株式会社 | Centrifugal Fans and Rotary Motors |
| CN115882667A (en) * | 2023-03-03 | 2023-03-31 | 裕利年电子南通有限公司 | Synchronous reluctance motor and processing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4003155A1 (en) * | 1990-02-03 | 1991-08-29 | Bosch Gmbh Robert | ELECTRIC MACHINE WITH FOREIGN VENTILATION |
| JP2001211608A (en) * | 1999-11-15 | 2001-08-03 | Toshiba Kyaria Kk | Vehicle generator |
| JP3783832B2 (en) * | 2000-03-30 | 2006-06-07 | 三菱電機株式会社 | AC generator for vehicles |
-
2004
- 2004-02-27 CN CNB2004100082845A patent/CN100440692C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1983765B (en) * | 2005-11-30 | 2011-03-09 | 通用电气公司 | Electromechanical device having three-dimensional stator laminations |
| CN103527747A (en) * | 2012-06-28 | 2014-01-22 | Lg伊诺特有限公司 | Motor |
| CN105226881A (en) * | 2015-11-04 | 2016-01-06 | 上海电气电站设备有限公司 | The computational methods of the supporting exciter ventilating system of a kind of high-rating generator |
| CN110994906A (en) * | 2018-10-03 | 2020-04-10 | 东芝三菱电机产业系统株式会社 | Brushless rotating electric machine |
| CN113653669A (en) * | 2020-05-12 | 2021-11-16 | 三菱电机株式会社 | Centrifugal Fans and Rotary Motors |
| CN115882667A (en) * | 2023-03-03 | 2023-03-31 | 裕利年电子南通有限公司 | Synchronous reluctance motor and processing method thereof |
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| Publication number | Publication date |
|---|---|
| CN100440692C (en) | 2008-12-03 |
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