CN202309258U

CN202309258U - Stator for alternating-current generator

Info

Publication number: CN202309258U
Application number: CN2011204472709U
Authority: CN
Inventors: 陈孙艺; 吴照耀
Original assignee: QUANZHOU YIDA ELECTRIC VEHICLE CO Ltd
Current assignee: QUANZHOU YIDA ELECTRIC VEHICLE CO Ltd
Priority date: 2011-11-11
Filing date: 2011-11-11
Publication date: 2012-07-04
Anticipated expiration: 2021-11-11

Abstract

The utility model discloses a stator for an alternating-current generator, which comprises an iron core and a stator winding, wherein the stator winding is wound on the iron core; 108 rectangular slots are equidistantly drilled on the iron core, slot insulating paper which is adapted to each rectangular slot is laid in the rectangular slot along the wall of the rectangular slot, each rectangular slot is divided into four layers according to the arrangement of inner stator coils of the rectangular slot, and each rectangular slot is sequentially divided into an inner-upper layer, an inner-lower layer, an outer-lower layer an outer-upper layer from inside to outside according to the radial direction of the iron core; the stator winding is a three-phase winding, the number P of magnetic-pole pairs is equal to 6, the slot number q of each phase of each pole is equal to 3, the coils of each phase can be divided into threes coil groups, the stator coils of each phase comprise 33 upper-layer coils, 33 lower-layer coils, 3 middle crossover coils, 2 connecting crossover coils and 2 winding leading-out wires; and the contradictory problem of the volume and the electricity-generating quantity of the generator in the prior art is solved according to the stator. The stator for the alternating-current generator has the characteristics of compact structure and high output power, and is applicable to other generators, such as automobiles and the like needing large power.

Description

A kind of stator of alternating current generator

Technical field

The utility model relates to a kind of stator of alternating current generator, is meant the stator of the alternating current generator with compact conformation and high-output power that a kind of automobile is used especially.

Background technology

Along with the fast development of automotive engineering, the power consumption equipment on the automobile is increasing, thereby the power consumption of automobile is increasingly high, and then also increasingly high to the generated output requirement of automobile current generator, and the increase of power will inevitably cause the increasing of generator volume; Yet; The engine room of current automobile is more and more narrower and small and crowded; In limited space, the energy output of existing generator can't satisfy this demand, so the contradictory problems between generator volume and energy output becomes a technical barrier of generator high power research and development; Under the prerequisite of restriction generator volume, improve power output one the most effective means is windings of adjustment stator at present.

Disclosed a kind of stator that is used for ac generator of vehicle in the prior art; It can realize compact design, big power and low noise; Its stator core equidistantly offers 96 rectangular channels; Stator winding is made up of the conductor segment of a plurality of enamel-cover flat type copper wires, is connected with each other in the different layers inner wire section of different rectangular channels, so that constitute the winding with high space factor and low resistance; But in a single day this winding is used for the alternating current generator of 24V system, and it is too high generator power output too low (stator employing star connection) or generator zero amp frequency to occur, energy output too low (stator employing delta connection) during low speed.

In view of this, the utility model people furthers investigate the stator and the method for winding thereof of alternating current generator, and this case produces thus.

The utility model content

The purpose of the utility model is to provide a kind of stator of alternating current generator; It has overcome the contradictory problems between generator volume and energy output in the prior art; Characteristic with compact conformation and high-output power, other need in the powerful generator to be applicable to automobile etc.

In order to reach above-mentioned purpose, the solution of the utility model is:

A kind of stator of alternating current generator, it comprises an iron core and the stator winding of winding on this iron core; Above-mentioned iron core equal intervals offers 108 rectangular channels; In this each rectangular channel along its rectangle cell wall be equipped with one with the suitable slot liner paper of this rectangular channel; If this each rectangular channel has four layers by the branch of arranging of its inner stator coil, it is followed successively by interior upper strata, interior lower floor, outer lower floor and outer upper strata from the inside to the outside by the iron core radial direction; The said stator winding is three phase windings; Magnetic pole logarithm P=6; Every extremely every phase groove is counted q=3; Then the stator coil of every phase can be divided into the three-winding group, and the stator coil of this every phase comprises 33 upper coils, 33 inner coils, 3 middle cross-line coils, 2 connection cross-line coils and 2 winding lead-out wires; The pitch of above-mentioned upper and lower layer line circle is 9, inner coil be crossed on above-mentioned in lower floor and the outer lap wound formula coil of interlayer down, upper coil be crossed on above-mentioned in upper strata and the outer ripple of going up interlayer around the formula coil; It is 9 that above-mentioned 3 middle cross-line coils are striden the groove number that accounts for; The corresponding respectively above-mentioned three-winding group centre of layer line is up and down forwarded cross-line; It is 8 that above-mentioned 2 connection cross-line coils are striden the groove number that accounts for; The cross-line of connection in order between the corresponding above-mentioned three-winding group of difference, the head and the tail lead-out wire after the stator coil that above-mentioned 2 winding lead-out wires are corresponding phase is connected in series by rule in order.

The said stator coil is the flat type copper wire that cross section is flat, and the length of above-mentioned rectangular channel is extended along the radial direction of above-mentioned iron core.

After adopting such scheme, the stator of a kind of alternating current generator of the utility model, its method for winding adopt the winding of four layers of winding mode of three-phase; The iron core equal intervals offers 108 rectangular channels, and each rectangular channel branch has four layers, and the stator coil of enamel-cover is the order serial connection according to certain rules; Insulate between upper coil and inner coil, between adjacent upper coil and between adjacent inner coil and suitably applying compactly; The groove number is many, and the copper factor of coil is high, compares with the generator of the unidimensional stator of prior art; Its energy output can improve twice (with respect to the automobile current generator of 24V system); So the utility model has overcome the contradictory problems between generator volume and energy output in the prior art, has a characteristic of compact conformation and high-output power, other need in the powerful generator to be applicable to automobile etc.

The utility model especially; Said stator coil adopts cross section to be the flat type copper wire of flat; The length of 108 rectangular channels is all extended along the radial direction of iron core, and this kind structural design more helps the feasibility that 108 rectangular channels offer and the simplification and the reliability of stator coil winding.

Description of drawings

Fig. 1 is the structural representation of the utility model stator core;

Fig. 2 is the utility model field frame assembly partial sectional view;

Fig. 3 is that the upper and lower layer line circle of the utility model is striden a sketch map of establishing on iron core;

Fig. 4 is that the upper and lower layer line circle of the utility model is striden another sketch map of establishing on iron core;

Fig. 5 is the partial structurtes sketch map of the utility model stator;

Fig. 6 is the part coiling sketch mapes of the corresponding upper and lower layer line circle of a coil groups mutually of one in four layers of winding of the utility model three-phase;

Fig. 7 is the coiling sketch map of the partial stator winding in four layers of winding of the utility model three-phase;

Fig. 8 is the enlarged drawing of local A among Fig. 7;

Fig. 9 is the structural representation of each corresponding rectangular channel number in four layers of winding of the utility model three-phase;

Figure 10 is the order serial connection sketch map of its stator winding correspondence of U phase at the corresponding rectangle groove.

Label declaration

Iron core 1 rectangular channel 11

Lower floor 112 in the interior upper strata 111

Outer lower floor 113 outer upper stratas 114

Insulated cavity 12 stator coils 2

Inner coil 21 upper coils 22

Middle cross-line coil 23 connects cross-line coil 24

Winding lead-out wire 25 first rectangular channel L1

The second rectangular channel L2 stator coil free end M1, M2, M3, M4

Embodiment

In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.

The stator of a kind of alternating current generator that relates to for the utility model like Fig. 1-5, Fig. 6-10 is the stator winding method for winding of the said stator of the utility model, stator comprises an iron core 1 and the stator winding of winding on this iron core 1.

Said iron core 1, its equal intervals offer 108 rectangular channels 11, in this each rectangular channel 11 along its rectangle cell wall be equipped with one with the suitable slot liner paper 12 of this rectangular channel 11; If this each rectangular channel 11 has four layers by the branch of arranging of the stator coil in it 2, and is as shown in Figure 2, upper strata 111, interior lower floor 112, outer lower floor 113 and outer upper strata 114 in it is followed successively by by iron core 1 radial direction from the inside to the outside.

The design of the iron core 1 of corresponding said stator, the method for winding of said stator winding adopts the winding of four layers of winding mode of three-phase, magnetic pole logarithm P=6, every extremely every phase groove is counted q=3; Then in three phase windings, the stator coil 2 of every phase can be divided into the three-winding group, and this three-winding group comprises 12 groups of rectangular channel groups, and this every group of rectangular channel group comprises 3 pairs of rectangular channels of corresponding said three-winding group; Thus, 36 rectangular channels should be arranged relatively whenever, its corresponding stator coil 2 comprises that 22,3 23,2 of middle cross-line coils of 21,33 upper coils of 33 inner coils connect

cross-line coil

24 and 2 winding lead-out wires 25, wherein:

The pitch of 21,33 upper coils 22 of said 33 inner coils is 9, and it is crossed in 11 groups of above-mentioned 12 groups of rectangular channel groups, and as shown in Figure 4, said each inner coil 21 is lap wound formula coil, and each upper coil 22 is ripple around the formula coil; As shown in Figure 3; Each upper coil 21/ inner coil 22 is striden two rectangular channels of establishing be made as the first rectangular channel L1 and the second rectangular channel L2; Every inner coil 21 is crossed on 113 of the outer lower floors of interior lower floor 112 and the second rectangular channel L2 of the first rectangular channel L1, and every upper coil 22 is crossed on 114 on the outer upper strata of interior upper strata 111 and the second rectangular channel L2 of the first rectangular channel L1;

Provide the part coiling sketch map (the 1st rectangular channel to the 28 rectangular channels) of the corresponding upper and lower layer line circle of a coil groups mutually of one in three phase windings for example like Fig. 6; Be the first rectangular channel L1 with the 1st rectangular channel for example; The 10th rectangular channel is the second rectangular channel L2; The stator coil free end M1 on the outer upper strata that the stator coil free end M2 of the outer lower floor that the first rectangular channel L1 is corresponding is corresponding with the above-mentioned second rectangular channel L2 links to each other; The stator coil free end M3 of the interior lower floor that the stator coil free end M4 on the interior upper strata that the first rectangular channel L1 is corresponding is corresponding with the second rectangular channel L2 links to each other, and the continuous mode of this kind is corresponding around the upper coil 22 of formula with ripple with the inner coil 21 of above-mentioned lap wound formula;

It is said that cross-line coils 23 are connected with 2 that cross-line coil 24 all is crossed on 12 groups of rectangular channel groups in the middle of 3 that last is organized in rectangular channel; In the middle of 3 cross-line coil 23 corresponding respectively above-mentioned three-winding groups separately up and down the centre between layer line forward cross-line; Its groove number that accounts for of striding is 9; 2 connect cross-line coil 24 its cross-line of connection in order between any two of corresponding above-mentioned three-winding group respectively, and the groove number that accounts for of striding is 8; It is as shown in Figure 8 that cross-line coil 23 is connected the preferable connected mode of cross-line coil 24 1 with 2 in the middle of these 3; Cross-line coil 23 is crossed on respectively between outer lower floor and the interior upper strata of 3 pairs of rectangular channels (corresponding each to groove be labeled as groove 11-groove 20, groove 12-groove 21, groove 13-groove 22) of corresponding group perhaps between the outer upper strata and interior lower floor in the middle of 3; A concrete embodiment, 3 middle cross-line coils 23 are crossed on the outer lower floor of groove 11 and the interior outer lower floor of interlayer, groove 12 and the interior outer upper strata of interlayer, groove 13 and the interior interlayer down of groove 22 gone up of groove 21 gone up of groove 20 respectively; 2 connect cross-line coil 24 and suitably are crossed between above-mentioned corresponding its outer upper strata and interior lower floor, outer lower floor and interior lower floor between any two of 3 pairs of rectangular channels of organizing; Between perhaps outer lower floor and interior upper strata, outer lower floor and the interior lower floor; A concrete embodiment, 2 connect outer upper strata and the interior following interlayer of groove 20, the outer lower floor of groove 13 and the interior interlayer down of groove 22 that cross-line coil 24 is crossed on groove 12 respectively;

Cross-line coil 23 is connected the above-mentioned mode of establishing of striding of cross-line coil 24 employings in the middle of said 3 with 2; Its correspondence is positioned at the connected mode of the similar above-mentioned inner coil of the free-ended connected mode of effective edge of each rectangular channel 22, upper coil 21; Specifically, set forth no longer in detail here referring to Fig. 7; After every phase coil is connected in series according to above-mentioned rule in order; Its correspondence is positioned at the two ends of above-mentioned last group rectangular channel and also respectively draws a winding lead-out wire 25; Referring to Fig. 8, a kind of concrete serial connection rule of corresponding above-mentioned coil, this two windings lead-out wire 25 is finally drawn by the outer upper strata of 11 grooves, the interior upper strata of 22 grooves; Accomplish the coiling of a phase in four layers of winding of above-mentioned three-phase thus, other two phases winding modes in like manner; Here it is to be noted; Cross-line coil 23 is connected cross-line coil 24 with 2 in the middle of said 3; And the cross-line and the lead-out mode of the winding lead-out wire 25 corresponding with it are not limited only to the foregoing description; For example each cross-line and the lead-in wire of said preferred embodiment are made simple combined transformation; All can realize four layers of three-phases around the home, so as long as in the middle of can realizing 3 23 described centres of cross-line coil forward cross-line, 2 connect 24 described connection cross-lines of cross-line coil all can, all in the scope that the utility model is protected.

More clear for the coiling that makes four layers of winding of said three-phase, provide the pairing rectangular channel of its each corresponding stator coil of three-phase (U, V, W) number like Fig. 9; Figure 10 provides mutually its stator winding correspondence sketch map of order serial connection regularly in the corresponding rectangle groove of U, from Figure 10 can demonstrate every mutually, according to above-mentioned method for winding; Its 12 36 extremely corresponding rectangular channels are divided into 3 coil groove groups; Referring to Fig. 9, Figure 10, be example mutually with U, in its three coil groove groups; First coil groove group corresponds to 1,10,19,28,37,46,55,64,73,82,91,100; The second coil groove group corresponds to 2,11,20,29,38,47,56,65,74,83,92,101, three connecting lines of a, c, e that cross-line coil 23 corresponded among the figure in the middle of tertiary coil groove group corresponded to 3,12,21,30,39,48,57,66,75,84,93,102,3; It is groove 1-groove 10, groove 2-groove 11, groove 3-groove 12 that correspondence is striden the groove of establishing; 2 connect two connecting lines of b, d that cross-line coil 24 corresponds among the figure, and it is groove 2-groove 10 that correspondence is striden the groove of establishing, groove 3-groove 11; U1, U2 in two winding lead-out wires, 25 corresponding diagram, said all with top cross-line coils 23 in the middle of 3 are connected the cross-line elaboration of cross-line coil 24 with 2 corresponding.

Thus, the utility model is according to the stator of the alternating current generator of above-mentioned method for winding formation, and it has 108 rectangular channels; Every rectangular channel all has 4 layers; 21 insulation of 21 of upper coil 22 and inner coils, 22 of adjacent upper coils and adjacent inner coil and suitably fitting compactly have that the groove number is many, the characteristics such as copper factor height of coil, compare with the generator of the unidimensional stator of prior art; Its energy output can improve twice; So the utility model has overcome the contradictory problems between generator volume and energy output in the prior art, has a characteristic of compact conformation and high-output power, other need in the powerful generator to be applicable to automobile etc.

Further, the said stator coil 2 of the utility model adopts cross section to be the flat type copper wire of flat, and the length of said 108 rectangular channels is all extended along the radial direction of iron core 1, is provided with by the length direction extension of its flat direction along rectangular channel 11 in stator coil 2 assemblings; This kind structural design more helps the feasibility that 108 rectangular channels 11 offer and the simplification and the reliability of 216 stator coil 2 windings.

Product form of the foregoing description and graphic and non-limiting the utility model and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.

Claims

1. the stator of an alternating current generator, it comprises an iron core and the stator winding of winding on this iron core; It is characterized in that: above-mentioned iron core equal intervals offers 108 rectangular channels; In this each rectangular channel along its rectangle cell wall be equipped with one with the suitable slot liner paper of this rectangular channel; If this each rectangular channel has four layers by the branch of arranging of its inner stator coil, it is followed successively by interior upper strata, interior lower floor, outer lower floor and outer upper strata from the inside to the outside by the iron core radial direction; The said stator winding is three phase windings; Magnetic pole logarithm P=6; Every extremely every phase groove is counted q=3; Then the stator coil of every phase can be divided into the three-winding group, and the stator coil of this every phase comprises 33 upper coils, 33 inner coils, 3 middle cross-line coils, 2 connection cross-line coils and 2 winding lead-out wires; The pitch of above-mentioned upper and lower layer line circle is 9, inner coil be crossed on above-mentioned in lower floor and the outer lap wound formula coil of interlayer down, upper coil be crossed on above-mentioned in upper strata and the outer ripple of going up interlayer around the formula coil; It is 9 that above-mentioned 3 middle cross-line coils are striden the groove number that accounts for; The corresponding respectively above-mentioned three-winding group centre of layer line is up and down forwarded cross-line; It is 8 that above-mentioned 2 connection cross-line coils are striden the groove number that accounts for; The cross-line of connection in order between the corresponding above-mentioned three-winding group of difference, the head and the tail lead-out wire after the stator coil that above-mentioned 2 winding lead-out wires are corresponding phase is connected in series by rule in order.

2. the stator of a kind of alternating current generator as claimed in claim 1, it is characterized in that: the said stator coil is the flat type copper wire that cross section is flat, the length of above-mentioned rectangular channel is extended along the radial direction of above-mentioned iron core.