CN100350725C - Alternating-current generator for vehicle - Google Patents
Alternating-current generator for vehicle Download PDFInfo
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- CN100350725C CN100350725C CNB021475458A CN02147545A CN100350725C CN 100350725 C CN100350725 C CN 100350725C CN B021475458 A CNB021475458 A CN B021475458A CN 02147545 A CN02147545 A CN 02147545A CN 100350725 C CN100350725 C CN 100350725C
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Abstract
The present invention relates to an alternating-current generator for vehicles, which can reduce the rise of stator temperature, the sound level of electromagnetic noise, etc. The generator of the present invention comprises a rotor and a stator (8), wherein the rotor is fixed on a rotary shaft which does rotatable support by a casing, and the stator is provided with cylindrical stator cores and stator windings which are formed by wounding conducting wires (50) on the stator cores; the stator cores are arranged in a circumferential direction to form an axial extending stator groove (14) in the proportion of two of the stator cores per pole and per phase, comprise the rotor and are supported in the casing. The present invention is characterized in that the relation of the diameter dimension (d) of the conducting wires coated with insulating layers and the circumferential breadth dimension (L) of the stator groove (14) is 2d<L in the alternating-current generator for vehicles.
Description
Technical field
The present invention relates to a kind of being equipped with and have the vehicle-mounted dlternator of stator that forms the stator core of stator slot with the ratio of 2 of every extremely every phases.
Background technology
General vehicle has with alternating current generator: stator winding is wound in the cylindric stator core and the stator that forms, with have the rotor that is provided in the excitation winding of all sides in this stator, week of described cylindric stator core upwards with etc. angular separation be formed with axially extended stator slot.And, in stator core the number of phases and number of magnetic poles according to stator winding, with the ratio of 1 of every extremely every phase stator slot is set.
Like this, the field boundary that stator slot is set with the ratio of 1 of every extremely every phase closes, the T shape bar that between stator slot, forms diametrically, adjacent pole is elongated both overlapping times, makes leakage flux become many.This leakage flux must make effective flux reduce, and simultaneously, the magnetic flux fluctuation takes place, so that the change of voltage takes place or upset output waveform, is galvanic occasion in rectification, becomes the reason of fluctuation.
Therefore, for example, proposed a division on the flat 4-26345 communique of Japan Patent Publication Laid-Open etc., decision is provided with stator slot with the ratio of 2 of every extremely every phases, attempts to shorten T shape bar adjacent pole both overlapping time diametrically, so that leakage flux reduces.
Fig. 9 will open the ideograph that the described stator major part of flat 4-26345 communique is launched into the plane as the spy.
In Fig. 9, stator core 60 is to be configured as the magnetic steel plate cylindric and to form, and axially extended stator slot 61 is with the setting in angular separation such as circumferential works of the ratio of 2 of every extremely every phases.Here, 72 stator slots 61 are set in the stator core 60, to obtain stator winding 63 12 magnetic poles, 2 three-phase alternating current winding formations by relative rotor (not shown).And these 72 stator slots 61 are with the spacing configuration of electrical angle 30 degree, according to the order of a phase stator slot 61a, d phase stator slot 61d, B phase stator slot 61b, e phase stator slot 61e, c phase stator slot 61c and f phase stator slot 61f, are circumferentially making repeated configuration.
A phase winding 63a does wavy being wound on the stator slot 61a group with lead and constitutes; B phase winding 63b does wavy being wound on the stator slot 61b group with lead and constitutes; C phase winding 63c does wavy being wound on the stator slot 61c group with lead and constitutes.And a phase of coiling, b reach c phase winding 63a mutually like this, 63b, 63c make Y connection (interchange wiring), constitute the three-phase alternating current winding.Here, a phase, b phase, and c phase winding 63a, 63b, 63c stator slot 61a, the 61b, the 61c that are inserted have the phase difference of electrical angle 120 degree respectively.
Again, d phase winding 63d does wavy being wound on the stator slot 61d group with lead and constitutes; E phase winding 63e does wavy being wound on the stator slot 61e group with lead and constitutes; Having 1 phase winding 61f that lead is done wavy being wound on the stator slot 61f group again constitutes.The d phase of coiling, e reach f phase winding 63d mutually like this, 63e, 63f make Y connection, constitute the three-phase alternating current winding.Here, d phase, e phase, f phase winding 63d, 63e, 63f have the phase difference of electrical angle 120 degree respectively.And, a phase, b are reached the phase difference that c phase winding 63a, 63b and 63c have electrical angle 30 degree mutually.
These 6 phase windings 63a, 63b, 63c, 63d, 63e, 63f are wound in the stator core 60, make stator.In the vehicle-mounted dlternator of the stator that is equipped with such formation, with rectifier respectively to the interchange of 2 three-phase alternating current windings output carry out after the rectification, synthetic output.
Because stator slot 61 is to be provided with the ratio of 2 of every extremely every phases, therefore, about the footpath upwards the part of the T shape bar 62 that overlaps of both of adjacent pole become considerably less, thus, leakage flux reduces, and can suppress effective flux and reduce.Equally, the fluctuation of magnetic flux be can suppress, the fluctuation of generation voltage and the disorder of output waveform reduced, the AC noise in the time of can reducing the direct current rectification.
According to the vehicle-mounted dlternator of aforementioned formation, because stator forms stator slot 61 with the ratio of 2 of every extremely every phases, therefore, to compare with every extremely every stator slot of 1 ratio mutually, the groove number of stator slot 61 increases, and has following point.
1, as shown in figure 10, stator slot 61 circumferential size (L) are little, and because of the relation with lead 64 diameter dimensions (d) is 2d＞L, in stator slot 61, taking in of lead 64 is random, and occupation efficiencys are low in the stator slot 61, spatial portion occupy the ratio height.Again because the mutual contact portion of the contact portion of T shape bar 62 and lead 64, lead 64 is few, therefore,, cause raising on the temperature of stator winding 63 to stator core 60 or few from lead 64 to the heat conduction of another lead 64, cause output to reduce, heat durability is low.
2, the width dimensions of T shape bar 62 diminishes, and because of its rigidity is also little, under rotational vibration, the electromagnetic noise that T shape bar takes place is big.
3, because the circumferential size of the peristome 65 of stator slot 61 is little, with lead 64 during from radially inner side coiling laterally, the frequency of the flange of lead 64 contact T shape bars 62 top ends uprises, and scribbles the poor insulativity of the lead 64 of insulating coating.
4, slot wedge 66 and between the lead 64 of interior internal side diameter the gap takes place easily, and stop the circumferential protuberance of slot wedges 66 little at flange 67, slot wedge 66 have the danger of shaking, coming off from peristome 66.
The present invention is to solve foregoing problems as problem, and the objective of the invention is: a kind of vehicle-mounted dlternator is provided, and described vehicle-mounted dlternator can reduce the rising of stator temperature, and reduces the electromagnetic noise sound level.
A kind of like this vehicle-mounted dlternator of vehicle-mounted dlternator of the present invention system, described vehicle-mounted dlternator has: be fixed on by housing and make rotor in the rotating shaft of rotatable support and stator; Described stator has stator core cylindraceous and lead is wound in this stator core and the stator winding that constitutes, described stator core is with the ratio of 2 of every extremely every phases, be formed with axially extended stator slot in its circumferential array, and interiorly to comprise aforementioned rotor shape, to be supported in the above-mentioned housing, it is characterized in that, in above-mentioned vehicle-mounted dlternator, pass by the circumferential fabric width size L of the diameter dimension d of the aforementioned wire of insulating layer coating and stator former groove is: 2d＜L, the cylindrical slot wedge of distortion wherein, is set at the outside diameter of stator slot peristome.
Again, the vehicle according to the invention alternating current generator, described stator slot cross sectional shape radially is a rectangle.
Again, vehicle according to the invention alternating current generator, the width dimensions s of its stator slot peristome are more than 1.5 times of diameter of wire size d.
The vehicle according to the invention alternating current generator, between stator slot the top ends of T shape bar radially the corner part of the internal side diameter of the flange part of broadening be curve form.
The vehicle according to the invention alternating current generator forms insulating resin layer at the stator slot internal face.
The vehicle according to the invention alternating current generator, the lead of many while harnesses is wound on stator slot simultaneously, constitutes the 1st and the 2nd three-phase alternating current winding.
Vehicle according to the invention has with alternating current generator: be fixed on by housing and make rotor in the rotating shaft of rotatable support and stator; Described stator has stator core cylindraceous and lead is wound in this stator core and the stator winding that constitutes, described stator core is with the ratio of 2 of every extremely every phases, be formed with axially extended stator slot in its circumferential array, and interiorly to comprise aforementioned rotor shape, to be supported in the above-mentioned housing, it is characterized in that, in above-mentioned vehicle-mounted dlternator, pass by the circumferential fabric width size L of the diameter dimension d of the aforementioned wire of insulating layer coating and stator former groove is: 2d＜L, the cylindrical shape slot wedge of distortion wherein, is set at the outside diameter of stator slot peristome.
Vehicle according to the invention has with alternating current generator: be fixed on by housing and make rotor in the rotating shaft of rotatable support and stator; Described stator has stator core cylindraceous and lead is wound in this stator core and the stator winding that constitutes, described stator core is with the ratio of 2 of every extremely every phases, be formed with axially extended stator slot in its circumferential array, and comprise aforementioned rotor shape with interior, be supported in the above-mentioned housing, it is characterized in that, in above-mentioned vehicle-mounted dlternator, pass by the circumferential fabric width size L of the diameter dimension d of the aforementioned wire of insulating layer coating and stator former groove is: 2d＜L, be out of shape slot wedge freely the outside diameter setting of stator slot peristome, on slot wedge, form cut-out portion.
The vehicle according to the invention alternating current generator.
The vehicle according to the invention alternating current generator, the shape at the circumferential both ends of flange part is asymmetric.
The vehicle according to the invention alternating current generator, the internal side diameter of slot wedge is provided with layer of varnish.
Description of drawings
Fig. 1 is the vehicle-mounted dlternator cutaway view of embodiment of the present invention 1.
Fig. 2 is the stator oblique view of the vehicle-mounted dlternator of embodiment of the present invention 1.Slot wedge is omitted among the figure.
Fig. 3 is the stator exploded perspective view of the vehicle-mounted dlternator of embodiment of the present invention 1.
Fig. 4 is the electrical circuit diagram of the vehicle-mounted dlternator of embodiment of the present invention 1.
Fig. 5 is the stator major part cutaway view of the vehicle-mounted dlternator of embodiment of the present invention 2.
Fig. 6 is the vehicle-mounted dlternator stator major part cutaway view of embodiment of the present invention 2.
Fig. 7 is the stator major part cutaway view of the vehicle-mounted dlternator of embodiment of the present invention 3.
Fig. 8 is the oblique view of another routine stator of vehicle-mounted dlternator.
Fig. 9 is the ideograph of the stator major part planar development of vehicle-mounted dlternator in the past.
Figure 10 is the stator major part cutaway view of vehicle-mounted dlternator in the past.
Among the figure, 3 is housing, and 5 is cooling fan, 6 is axle, and 7 is rotor, 8,8A, 8B, 8C is a stator, 12 is rectifier, and 12A is the 1st rectifier, and 12B is the 2nd rectifier, 160A is the 1st three-phase alternating current winding, and 160B is the 2nd three-phase alternating current winding, and 14 is stator slot, 14a is an a phase stator slot, and 14b is a b phase stator slot, and 14c is a c phase stator slot, 14d is a d phase stator slot, and 14e is an e phase stator slot, and 14f is a f phase stator slot, 15 are stator core, 16,16A is a stator winding, 30a, 40a is a phase winding, 30b, 40b is the b phase winding, 30c, 40c is the c phase winding, 30d, 40d is the d phase winding, 30e, 40e is the e phase winding, 30f, 40f is the f phase winding, and 50 is lead, 51 is insulating resin layer, and 52 is peristome, and 53 is T type bar, 54 is flange part, and 54a is a corner part, 55,61,71 is slot wedge, 62 is varnish, and 71 are cut-out portion.
Embodiment
Following with reference to the description of drawings the embodiments of the present invention.
Fig. 1 is the cutaway view of the vehicle-mounted dlternator of embodiment of the present invention 1, Fig. 2 is the oblique view of stator of the vehicle-mounted dlternator of embodiment of the present invention 1, Fig. 3 is the stator exploded perspective view of embodiment of the present invention 1, vehicle-mounted dlternator, and Fig. 4 is the electrical circuit diagram of for motor vehicle alternating current generator of the present invention.
In Fig. 1, vehicle-mounted dlternator has: the housing 3 that is made of aluminum front rack 1 and tail-bracket 2; Be arranged in this housing 3, an end is fixed with the rotating shaft 6 of belt pulley 4; Be fixed on the round rotor 7 in this rotating shaft 6; Be fixed on the cooling fan 5 at rotor 7 axial both ends; Be fixed on housing 3 to surround the stator 8 of rotor 7; Be fixed on the other end of rotating shaft 6, to the slip ring 9 of rotor 7 supplying electric currents; The a pair of brush 10 that slides on slip ring 9 surfaces; Take in the brush carrier 11 of brush 10; Be electrically connected, the AC rectification of stator 8 generations become the rectifier 12 of direct current with stator 8; Be installed in the pressurizer 18 radiator 17, that adjust the alternating voltage size of stator 8 generations that is embedded in brush carrier 11.
Below, the structure of stator 8 is described with reference to Fig. 2 and Fig. 3.
In the stator core 15, the stator slot 14 of axially-extending is set in angular separation (electrical angle 30 degree spacings) such as circumferential with the ratio of 2 of every extremely every phases, relative 12 claw- type poles 22,23 of rotor 7 just, in stator core 15 72 stator slots 14 are set, so that the stator winding 16 that acquisition is made up of 2 three-phase alternating current windings.Here, stator slot 14 is order repeated configuration of the stator slot 14f of the stator slot 14c of stator slot 14e, c phase of stator slot 14b, the e phase of stator slot 14a, d phase stator slot 14d, B phase by a phase and f phase.The stator slot 14 of each phase is by the configuration of 6 slot pitches.
A phase winding 30a structure as shown in Figure 3, its structure is served as reasons by 12 stator slot incorporating section 31a of 6 slot pitches (6P) configurations, and end that will the adjacent stator slot incorporating section 31a wavy graphic structure formed of the connecting portion 31b of connection alternately in axial both sides each other.Described a phase winding 30a is accommodated in respectively by 6 slot pitches and disposes in each a phase stator slot 14a groove of stator slot incorporating section 31a, is wound in the stator core 15.And, the connecting portion 31b of connection is each other made in the end of adjacent stator slot incorporating section 31a, make circumferentially to extend, constitute winding overhang in the axial outside of stator core 15.In addition, b phase, c phase, d phase, e phase, and the structure of f phase winding 30b, 30c, 30d, 30e, 30f same.
A phase, b reach c phase winding 30a, 30b, the 30c 2 groove branches (2P) that circumferentially stagger mutually mutually, overlapping 3 layers, are wound in the stator core 15.Equally, f phase, d reach e phase winding 30f, 30d and the 30e 2 groove branches that circumferentially stagger mutually mutually, overlapping 3 layers, are wound in the stator core, to be located at interior all sides that a phase, b reach c phase winding 30a, 30b, 30c mutually.
Like this, as shown in Figure 2, obtain 6 phase winding 30a-30f and do radially overlapping 6 layers, be wound on stator core 15 and the stator 8 that obtains.At this moment, the winding 30a-30f of 6 phases is installed in stator core 15 from outer circumferential side by a phase winding 30a, b phase winding 30b, c phase winding 30c, f phase winding 30f, d phase winding 30d and e phase winding 30e sequence arrangement.And the winding overhang of the winding 30a-30f of 6 phases (connecting portion 31b) constitutes winding overhang 16f, the 16r of stator winding 16.In addition, winding overhang group 16f, 16r soak into varnish.
The a phase of coiling, b reach c phase winding 30a mutually like this, 30b, 30c make Y connection (interchange wiring), constitute the 1st three-phase alternating current winding 160A, d phase, e reach mutually the f phase winding 30d, 30e, 30f, make Y connection (interchange wiring), constitute the 2nd three-phase alternating current winding 160B.The the 1st and the 2nd three-phase alternating current winding 160A, 160B is connected to respectively on the 1st and the 2nd rectifier 12A, the 12B, constitutes electric loop as shown in Figure 4.
Winding 30a, 30b, 30c that a phase, b reach the c phase mutually form the phase difference that electrical angle 120 is spent respectively, and winding 30d, 30e, 30f that d phase, e reach the f phase mutually form electrical angle 120 degree phase differences respectively.And d phase, e reach winding 30d, 30e, the 30f of f phase mutually to winding 30a, the 30b of a phase, b phase c phase, the phase difference that 30c forms electrical angle 120.
In the vehicle-mounted dlternator that constitutes like this, from storage battery (not shown), to excitation winding 13 power supplies, magnetic flux takes place by brush 10, slip ring 9.This magnetic flux makes the claw-type pole 20 of pole core 20 be magnetized into the N utmost point, makes the claw-type pole 21 of pole core 21 be magnetized into the S utmost point.
On the other hand, utilize the motor driven belt pulley, utilize rotating shaft to drive rotor 7 again and rotate, provide rotating magnetic field by rotor rotation to stator core 15, three-phase alternating current winding 160A, the 160B of stator winding 16 produce electromotive force.The AC electromotive force that each three-phase alternating current winding 160A, 160B produce is rectified into direct current by the 1st and the 2nd rectifier 12A, 12B respectively.And its output voltage size is adjusted with pressurizer 18.Simultaneously, the output current of each rectifier 12 is after synthesizing, to charge in batteries.
Fig. 5 is the schematic diagram of situation of taking in the lead 50 of 15 velamen insulating layer coatings in the stator slot 14 of stator core of Fig. 1.
Again, in T shape bar 53 top ends of 14 of stator slots, radially the internal side diameter corner part 54a of the flange part 54 of broadening is a curve form.The shape at the circumferential both ends of flange part 54 is asymmetric, and the 1st fastener 56a of a square end portion of flange part 54 is outstanding big as the 2nd fastener 56b of the opposing party end.
The inside of stator slot 14 peristomes 52 is provided with the cylindrical slot wedge 55 of strain.
In the present embodiment, circumferential size is the size of taking in 2 leads 50 in the stator slot 14, with comparison in the past, stator slot 14 inside conductors 50 radially general alignment become 2 row, the occupation efficiency height of the lead 50 in the stator slot 14, and the contact portion of T shape bar 53 and lead 50, lead 50 mutual contact portion areas increase, promote lead 50 to do heat conduction to another lead 50, reduce the rising of the temperature of stator winding 16 to stator core 15 or lead 50.In fact, according to the experiment of being carried out under rated condition, the stator temperature rising value of generator was 180 degree in the past, and by contrast, generator unit stator temperature rising value of the present invention reaches 170 degree, and affirmation can reduce the rising value of temperature.
Again, although the width dimensions of T shape bar 53 diminishes, the rigidity of T shape bar 53 is also little, but the contact area of T shape bar 53 sides and lead 50 increases, T shape bar 53 is subjected to the more firm support in both sides, thereby, the sound level of the electromagnetic noise that is taken place in the time of reducing T shape bar 53 rotational vibrations.In fact once be to experimentize under the condition of 5000rpm with the rotating speed of rotor 7, electromagnetic noise 75dB in the past relatively, the present invention reaches 72dB.Reduced the electromagnetic noise of 3dB.
Again, owing on stator slot 14 internal faces, form the insulating resin layer 51 that epoxy resin constitutes, thereby the stator core 15 that the steel plate lamination constitutes improves the mutual adhesion of steel plate, and stator core 15 rigidity are increased, only this also reduces electromagnetic noise.In addition, insulating resin layer 51 is when using the high resin of conductive coefficient to constitute, can promote to reduce the rising of the temperature of stator winding 16 more from the heat conduction of lead 50 to stator core 15.
And, when cylindrical slot wedge 55 is set in the inside of stator slot 14 peristomes, because the lead 50 of internal side diameter and slot wedge 55 butts of strain, lead 50 is difficult to move about in stator slot 14, therefore, lead 50 is difficult to rub each other, and insulating coating is difficult to because lead rubs each other breakage take place.
Again, big more than the 2nd fastener 56b of the 1st fastener 56a of flange part 54 outstanding, therefore, when slot wedge 55 is installed in stator slot 14 peristomes, earlier slot wedge 55 is limited on the 1st fastener 56a, card ends the 2nd fastener 56b more outstanding unlike the 1st fastener 56a afterwards, and then slot wedge 55 can install to stator slot peristome 52 smoothly.Slot wedge 55 is limited to the 1st fastener 56a, the 2nd fastener 56b, and lead 50 and slot wedge 55 are difficult to come off from stator slot 14.
Aforementioned embodiments is that 15 leads 50 are accommodated in the stator slot 14, and 3 leads of harness are turned to the arrangement of 5 circles, take this, and compare with the occasion of each lead single line coiling, can shorten the coil-winding time.
Fig. 6 is the cutaway view of major part of the stator 8A of present embodiment 2, the difference of present embodiment and execution mode 1 is, stator slot 14 internal faces are provided with insulating paper 60, and the cylindrical shape slot wedge 61 of strain is set, and peristome 52 is provided with the layer of varnish 62 of the end of impregnation insulating paper 60.
In the present embodiment, cooling air passes through in the middle of slot wedge 61, the cooling of the stator winding 16 that cooling lead 50 constitutes possibility that become, and the rising of stator 8A temperature is lowered.
Again, layer of varnish 62 makes each flange part 54 integrated with each slot wedge 61, reduces the rotational vibration of T shape bar 53, reduces electromagnetic noise.
Fig. 7 is the cutaway view of major part of the stator 8B of execution mode 3.Execution mode 3 is that stator slot 14 peristomes 52 inside are provided with the distortion freedom and the slot wedge 71 of the 71a of cut-out portion is arranged with execution mode 1 difference.
In the present embodiment, slot wedge 71 distortion embed the space segment between stator slot 14 peristomes 52 and the lead 50, have improved the adaptation of lead 50 with slot wedge 71, and the vibration that reduces lead 50 reduces electromagnetic noise.
In aforementioned embodiments, each winding 30a-30f from stator slot 14 extended connecting portion 31b to circumferential one-sided extension.But to as shown in Figure 8, have the stator 8c of the stator winding 16A of the distribution configuration that connecting portion 41b that each winding 40a-40f extends from stator slot 14 distributes in circumferential both sides half and half, also can be suitable in the present invention.
Say that in each execution mode the slot wedge that uses adopts the material of strain, but also can adopt the slot wedge of plastic deformation again.This occasion because the slot wedge distortion meets the stator slot end shape, increases the closed intensity of T shape bar and slot wedge, lead and slot wedge, and slot wedge can be firmly secured to the inside of stator slot peristome more.
In each execution mode, use the lead of circular section to constitute winding, and insert in the stator slot lead also the cross section be the lead of rectangle.This occasion, stator slot inside conductor and stator slot wall contact area increase, and increase the various effects (the lead occupation efficiency improves, promotes heat conduction, reduces the rising of temperature) of aforementioned each execution mode explanation.That is to say, form the space of stacked generation by the circular cross-section lead, and use the lead of square-section, then can constitute the winding that can not form wasted space because of the lead turning.
In each execution mode, 3 leads are made the coil that wave winding coiling 5 circles are arranged simultaneously, if but satisfy 2d＜L, then be not limited to 3, even the lead of coiling simultaneously more than 2 or 4 also can obtain same effect.
The effect of invention
As above explanation, the vehicle according to the invention alternating current generator is owing to be coated with insulating coating Diameter of wire size (d) and stator slot circumferential size (L) relation are 2d＜L, therefore can increase stator slot Between the contact area of T shape bar and lead, and the mutual contact area of lead, hot conducting energy reduces stator Temperature rises. Again, T shape bar suppresses the vibration of T shape bar by in the more reliable support of the lead of both sides, falls Low electromagnetic noise.
Again, vehicle according to the invention alternating current generator, stator slot cross section radially is rectangle, therefore, Each layer conductor number is identical in the stator slot, is positioned in stator slot, and then more can reduce stator temperature and rise, and Further suppress the vibration of T shape bar, thereby further reduce electromagnetic noise.
Again, the vehicle according to the invention alternating current generator, stator slot peristome width dimensions (s) is led More than 1.5 times of dimensions (d), therefore, lead can be wound in the stator slot smoothly, during coiling, The wire insulation coating becomes and is difficult to breakage, improves the insulating properties of lead.
Again, the vehicle according to the invention alternating current generator, because the T shape bar top ends between stator slot, The corner part of radially opening up wide flange part internal diameter is curve form, during coiling, even the insulating coating of lead hits Hit T shape bar flange part and also be difficult to breakage, improve wire insulation.
Again, the vehicle according to the invention alternating current generator is owing to form insulating resin on the wall in the stator slot Layer so T shape bar rigidity uprises, reduces electromagnetic noise. The resin high with thermal conductivity factor consists of insulating resin During layer, the thermal capacitance of lead easily is delivered to stator core, and the temperature that reduces stator winding rises.
Again, the vehicle according to the invention alternating current generator is because the many leads of tying simultaneously bundle are wound on calmly Sub-groove consists of the 1st and the 2nd three cross streams windings, makes operation so can shorten winding.
Again, the vehicle according to the invention alternating current generator is owing to arrange change at stator slot peristome outside diameter The cylindrical slot wedge of shape is so slot wedge driving fit peristome can prevent coming off, breaking away from of lead, slot wedge. The rotational vibration that also can suppress T shape bar top ends reduces electromagnetic noise.
Again, the vehicle according to the invention alternating current generator is because the outside diameter of stator slot peristome arranges change The cylindrical shape slot wedge of shape, so cooling-air passes through in slot wedge inside, the cooling lead possibility that becomes can reduce The temperature of stator winding rises.
Again, the vehicle according to the invention alternating current generator is because the outside diameter of stator slot peristome arranges change Shape is slot wedge freely, the slot wedge distortion spatial portion between stator slot peristome and the lead of packing into, improve lead with The adaptation of slot wedge reduces the vibration of lead, and reduces electromagnetic noise.
Vehicle-mounted dlternator of the present invention forms cutting portion on the slot wedge, the easier distortion of slot wedge is carried more The adaptation of high lead and slot wedge.
Again, the vehicle according to the invention alternating current generator is because the shape right and wrong at the circumferential both ends of flange Symmetrical, thus with slot wedge when radially being inserted in the stator slot, require to be inserted to from behind outstanding little by one Side flange section side, slot wedge can be inserted to the peristome of stator slot smoothly.
Again, the vehicle according to the invention alternating current generator, because the internal side diameter of slot wedge is provided with layer of varnish, so layer of varnish makes each flange part and each slot wedge integrated, the stator rigidity uprises, and reduces the rotational vibration of T shape bar, the reduction electromagnetic noise.
Claims (22)
1. vehicle-mounted dlternator, described generator has: is fixed on by the rotor in the rotating shaft of housing rotatable support, and stator; Described stator has stator core cylindraceous and lead is wound in this stator core and the stator winding that constitutes, described stator core is with the ratio of 2 of every extremely every phases, be formed with axially extended stator slot in its circumferential array, described stator core encases aforementioned rotor and is supported in the above-mentioned housing, it is characterized in that, in above-mentioned vehicle-mounted dlternator, pass by the circumferential fabric width size L of the diameter dimension d of the aforementioned wire of insulating layer coating and stator former groove is: 2d＜L, the cylindrical slot wedge of distortion wherein, is set in stator slot peristome inside.
2. vehicle-mounted dlternator as claimed in claim 1 is characterized in that, stator slot cross sectional shape radially is a rectangle.
3. vehicle-mounted dlternator as claimed in claim 1 is characterized in that, stator slot peristome width dimensions S is more than 1.5 times of diameter of wire size d.
4. vehicle-mounted dlternator according to claim 1 is characterized in that, the top ends of T shape bar between stator slot, and radially the flange part inside corner portion of broadening is a curve form.
5. vehicle-mounted dlternator as claimed in claim 1 is characterized in that, forms insulating resin layer at the stator slot internal face.
6. vehicle-mounted dlternator as claimed in claim 1 is characterized in that, the lead of many while harnesses is wound on stator slot, constitutes the 1st and the 2nd three-phase alternating current winding.
7. vehicle-mounted dlternator as claimed in claim 4 is characterized in that, the circumferential both ends shape of flange part is asymmetric.
8. vehicle-mounted dlternator, described generator has: be fixed on by housing and make rotor in the rotating shaft of rotatable support and stator; Described stator has stator core cylindraceous and lead is wound in this stator core and the stator winding that constitutes, described stator core is with the ratio of 2 of every extremely every phases, be formed with axially extended stator slot in its circumferential array, described stator core encases aforementioned rotor and is supported in the above-mentioned housing, it is characterized in that, in above-mentioned vehicle-mounted dlternator, pass by the circumferential fabric width size L of the diameter dimension d of the aforementioned wire of insulating layer coating and stator former groove is: 2d＜L, the columnar slot wedge of distortion wherein, is set in stator slot peristome inside.
9. vehicle-mounted dlternator as claimed in claim 8 is characterized in that, stator slot cross sectional shape radially is a rectangle.
10. vehicle-mounted dlternator as claimed in claim 8 is characterized in that, stator slot peristome width dimensions S is more than 1.5 times of diameter of wire size d.
11. as vehicle-mounted dlternator as described in the claim 8, it is characterized in that, the top ends of T shape bar between stator slot, radially the flange part inside corner portion of broadening is a curve form.
12. vehicle-mounted dlternator as claimed in claim 8 is characterized in that, forms insulating resin layer at the stator slot internal face.
13. vehicle-mounted dlternator as claimed in claim 8 is characterized in that, the lead of many while harnesses is wound on stator slot, constitutes the 1st and the 2nd three-phase alternating current winding.
14. vehicle-mounted dlternator as claimed in claim 11 is characterized in that, the circumferential both ends shape of flange part is asymmetric.
15. vehicle-mounted dlternator as claimed in claim 8 is characterized in that, the internal side diameter of slot wedge is provided with layer of varnish.
16. a vehicle-mounted dlternator, described generator has: be fixed on by housing and make rotor in the rotating shaft of rotatable support and stator; Described stator has stator core cylindraceous and lead is wound in this stator core and the stator winding that constitutes, described stator core is with the ratio of 2 of every extremely every phases, be formed with axially extended stator slot in its circumferential array, described stator core encases aforementioned rotor and is supported in the above-mentioned housing, it is characterized in that, in above-mentioned vehicle-mounted dlternator, pass by the circumferential fabric width size L of the diameter dimension d of the aforementioned wire of insulating layer coating and stator former groove is: 2d＜L, wherein, but, on slot wedge, form cut-out portion at the inner slot wedge that Free Transform is set of stator slot peristome.
17. vehicle-mounted dlternator as claimed in claim 16 is characterized in that, stator slot cross sectional shape radially is a rectangle.
18. vehicle-mounted dlternator as claimed in claim 16 is characterized in that, stator slot peristome width dimensions S is more than 1.5 times of diameter of wire size d.
19. as vehicle-mounted dlternator as described in the claim 16, it is characterized in that, the top ends of T shape bar between stator slot, radially the flange part inside corner portion of broadening is a curve form.
20. vehicle-mounted dlternator as claimed in claim 16 is characterized in that, forms insulating resin layer at the stator slot internal face.
21. vehicle-mounted dlternator as claimed in claim 16 is characterized in that, the lead of many while harnesses is wound on stator slot, constitutes the 1st and the 2nd three-phase alternating current winding.
22. vehicle-mounted dlternator as claimed in claim 19 is characterized in that, the circumferential both ends shape of flange part is asymmetric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021475458A CN100350725C (en) | 2002-10-11 | 2002-10-11 | Alternating-current generator for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021475458A CN100350725C (en) | 2002-10-11 | 2002-10-11 | Alternating-current generator for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1489263A CN1489263A (en) | 2004-04-14 |
| CN100350725C true CN100350725C (en) | 2007-11-21 |
Family
ID=34148712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021475458A Expired - Fee Related CN100350725C (en) | 2002-10-11 | 2002-10-11 | Alternating-current generator for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100350725C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101267662B1 (en) * | 2009-06-23 | 2013-05-24 | 미쓰비시덴키 가부시키가이샤 | Stator of vehicle ac generator and method for manufacturing the same |
| JP5682603B2 (en) * | 2012-08-10 | 2015-03-11 | 株式会社デンソー | Rotating electrical machine stator for vehicles |
| CN106936280B (en) * | 2017-04-28 | 2023-07-25 | 上海法雷奥汽车电器系统有限公司 | Automotive alternating-current generator |
| CN106877605B (en) * | 2017-04-28 | 2023-07-21 | 上海法雷奥汽车电器系统有限公司 | Automotive alternating-current generator |
| CN110544993B (en) * | 2019-08-23 | 2022-03-08 | 奇鋐科技股份有限公司 | Stator structure |
| WO2022217426A1 (en) * | 2021-04-12 | 2022-10-20 | 舍弗勒技术股份两合公司 | Slot wedge for stator assembly, and stator assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19950418A1 (en) * | 1999-10-20 | 2001-04-26 | Abb Patent Gmbh | Air cooling turbogenerator of electric machine, invovles applying cold air in duct arranged in air gap and guiding over cooling slits |
| US20020079772A1 (en) * | 2000-12-26 | 2002-06-27 | Mitsubishi Denki Kabushiki Kaisha | Automotive alternator and a method for manufacturing a stator therefor |
-
2002
- 2002-10-11 CN CNB021475458A patent/CN100350725C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19950418A1 (en) * | 1999-10-20 | 2001-04-26 | Abb Patent Gmbh | Air cooling turbogenerator of electric machine, invovles applying cold air in duct arranged in air gap and guiding over cooling slits |
| US20020079772A1 (en) * | 2000-12-26 | 2002-06-27 | Mitsubishi Denki Kabushiki Kaisha | Automotive alternator and a method for manufacturing a stator therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1489263A (en) | 2004-04-14 |
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