CN107565720A - A kind of stator winding of alternating current generator - Google Patents

A kind of stator winding of alternating current generator Download PDF

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Publication number
CN107565720A
CN107565720A CN201710855183.9A CN201710855183A CN107565720A CN 107565720 A CN107565720 A CN 107565720A CN 201710855183 A CN201710855183 A CN 201710855183A CN 107565720 A CN107565720 A CN 107565720A
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China
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layer
groove
coil
grooves
stator
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CN201710855183.9A
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Chinese (zh)
Inventor
宫健
苍衍
郭守仑
王金昊
曾金玲
孟凡胜
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FAW Group Corp
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FAW Group Corp
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Priority to CN201710855183.9A priority Critical patent/CN107565720A/en
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Abstract

The invention discloses a kind of stator winding of alternating current generator, the stator includes 8 poles and the 48 rectangular stator grooves equidistantly opened up, the winding uses distributed winding, wherein, it is that square coil is inserted into the stator slot by cross sectional shape, the winding is embodied as the diametral winding structure of the diametral winding structure of the tunnel of 3 phase 26 pitches in parallel or 6 pitches of the tunnel of 3 phase 1 parallel connection, MgO-ZrO_2 brick is 2, the different layers that each square coil is inserted into two different stator slots on stator are connected according to predetermined rule to form the stator winding, 4 coils are placed in each stator slot, the 1st layer is followed successively by from outside to inside according to stator radial direction, 2nd layer, 3rd layer, 4th layer.The present invention can solve the problem that the contradictory problems between generator performance and volume, reduce the height of Generator Stator Winding Ends, reduce the overall volume of generator, increase winding copper factor, improve generator performance.

Description

A kind of stator winding of alternating current generator
Technical field
The present invention relates to a kind of new-energy automobile alternating current generator, and in particular to one kind has compact-sized and high-performance The stator winding of generator.
Background technology
With the fast development of new-energy automobile technology, for the performance requirement more and more higher of alternating current generator, performance Increase inevitably results in the increase of generator volume, but new-energy automobile is particularly the bulk of light mixed vehicle motor room It is extremely limited, cause the performance of generator and the contradiction of volume.
Meanwhile generator can be categorized as Distributed Winding generator according to stator coil winding scheme and concentratred winding generates electricity Machine.Distributed Winding generator can be divided into circular coil and square coil according to the cross sectional shape of winding coil.With circular coil Now compare, square coil can effectively improve the copper factor of generator, reduce the copper loss of generator so as to improve the effect of generator Rate, while the end height of machine winding coil can be reduced, so as to save the volume of motor.However, compared with circular coil, Square coil has difficulties in coil winding and offline aspect, it is difficult to which use is either manually or mechanically offline.
It is more that patent document 1 (CN200780022091.7) and patent document 2 (CN201510789339.9) disclose one kind Set segmented hair-pin winding, the coiling of machine winding is carried out using square coil, but their disclosed connected modes are complicated, around The various informative of coil is organized, is unfavorable for producing;Patent document 3 (CN201110358151.0) and patent document 4 (CN201510312428.4) a kind of method for winding of the square coil of motor stator is individually disclosed, but it is directed to respectively The motor of 108 grooves, 120 grooves and 126 grooves, motor for 48 grooves do not apply to simultaneously, and it is too high to easily cause the back-emf of motor, exists For 48V systems can not high-speed power generation the problems such as.
The content of the invention
For deficiency of the prior art, it is an object of the invention to solve the lance between generation current machine performance and volume Shield problem, the height of generator windings end turn is reduced, reduce the overall volume of generator, increase winding copper factor, improved Generator performance, so as to provide a kind of stator winding of alternating current generator.
The technical solution adopted by the present invention is:
The embodiment of the present invention provides a kind of stator winding of alternating current generator, it is characterised in that the stator includes 8 poles The 48 rectangular stator grooves equidistantly opened up, the winding use distributed winding, wherein, it is square line by cross sectional shape Circle is inserted into the stator slot, and the winding is embodied as the diametral winding structure or 3 phases 1 of the tunnel of 3 phase 26 pitches in parallel The diametral winding structure of 6 in parallel pitches of road, MgO-ZrO_2 brick 2, each square coil are inserted on stator two not With the different layers of stator slot connected according to predetermined rule to form the stator winding, the winding coil in each groove belongs to same One phase, wherein, radial direction of the square coil along the stator core is formed in the stator slot of the stator core according to fixed Be arranged in order from outside to inside the 1st layer to the 4th layer of sub- radial direction;And in the full section for being embodied as the tunnel of 3 phase 26 pitches in parallel In the case of away from winding construction, include 2 outlet lead-out wires, 2 neutral leads, 14 big hairpin-types per phase winding coil Square coil, 14 bobby pin formula square coils and 2 bridging coils, wherein, the big hair-pin coil and the bobby pin Formula coil and the jumper cast turn into the U-shaped or V-type with a pair of legs, a pair of legs of the big hair-pin coil Insert respectively and be fastened to the 1st layer and the 4th layer of two grooves that pitch is 6, a pair of legs difference of the bobby pin formula coil Insert and be fastened to the layers 2 and 3 for two grooves that pitch is 6, a pair of legs of the bridging coil are inserted simultaneously tightly respectively It is affixed to the 3rd layer and the 1st layer of two grooves that pitch is 6;If it is reference groove to select a stator slot, U phase winding coils Outlet draws line position and differs 0 groove or 1 groove of difference, and U phase winding coils counterclockwise clockwise with reference groove relative position Outlet lead-out wire be located at the 2nd layer in corresponding groove, neutral lead position and the reference groove relative position of U phase winding coils 6 grooves of difference or 7 grooves of difference, and the neutral lead of U phase winding coils is located in corresponding groove counterclockwise clockwise 4th layer;The outlets of V phase winding coils draws line position and differs 4 grooves clockwise with reference groove relative position or differ 5 counterclockwise Individual groove, and the outlet lead-out wire of V phase winding coils is located at the 2nd layer in corresponding groove, the neutral lead of V phase winding coils Position differs 10 grooves or 11 grooves of difference, and the neutrality of V phase winding coils counterclockwise with reference groove relative position clockwise Point lead-out wire is located at the 4th layer in corresponding groove;Line position is drawn in the outlet of W phase winding coils and reference groove relative position is clockwise Differ 8 grooves or 9 grooves of difference, and the outlet lead-out wire of W phase winding coils is located at the 2nd layer in corresponding groove, W phases counterclockwise The neutral lead position of winding coil differs 14 grooves or counterclockwise 15 grooves of difference with reference groove relative position clockwise, And the neutral lead of W phase winding coils is located at the 4th layer in corresponding groove.
Alternatively, in the case where being embodied as the diametral winding structure of the tunnel of 3 phase 16 pitches in parallel, per phase winding coil Including 2 outlet lead-out wires, 2 neutral leads, 14 big hairpin-type square coil, 14 bobby pin formula square coils, 2 Individual bridging coil, wherein, the big hair-pin coil and the bobby pin formula coil and the jumper cast, which turn into, to be had The U-shaped or V-type of a pair of legs, a pair of legs of the big hair-pin coil are inserted and are fastened to two grooves that pitch is 6 respectively The 1st layer and the 4th layer, a pair of legs of the bobby pin formula coil insert respectively and be fastened to pitch be 6 two grooves the 2nd Layer and the 3rd layer, a pair of legs of the bridging coil are inserted and are fastened to the 3rd layer and the 1st of two grooves that pitch is 6 respectively Layer;If it is reference groove to select a stator slot, line position is drawn in the outlet of U phase winding coils and reference groove relative position is suitable Hour hands or 0 groove of difference, and the outlet lead-out wire of U phase winding coils is located at the 2nd layer in corresponding groove, U phase winding lines counterclockwise The connection of circle draw line position differed clockwise with reference groove phase position 6 grooves or it is counterclockwise differ 1 groove, and U phases around The connection lead-out wire of group coil is located at the 4th layer and the 2nd layer in corresponding groove respectively, the neutral lead position of U phase winding coils Put and differ 7 grooves clockwise or counterclockwise with reference groove relative position, and the neutral lead of U phase winding coils is located at phase Answer the 4th layer in groove;The outlet of V phase winding coils draws line position and differs 4 clockwise or counterclockwise with reference groove relative position Individual groove, and the outlet lead-out wire of V phase winding coils is located at the 2nd layer in corresponding groove, the connection lead-out wire position of V phase winding coils Put and differ 10 grooves or counterclockwise 5 grooves of difference clockwise with reference groove phase position, and the connection of V phase winding coils is drawn Line is located at the 4th layer and the 2nd layer in corresponding groove respectively, the neutral lead position position relative with reference groove of V phase winding coils Put 11 grooves of difference, and the neutral lead of V phase winding coils is located at the 4th layer in corresponding groove clockwise or counterclockwise;W The outlet of phase winding coil draws line position and differs 8 grooves clockwise or counterclockwise with reference groove relative position, and outlet is drawn Outlet is located at the 2nd layer in corresponding groove, and line position is drawn in the connection of W phase winding coils and reference groove phase position is clockwise or inverse Hour hands differ 14 grooves and 9 grooves, and the connection lead-out wire of W phase winding coils is located at the 4th layer and the 2nd in corresponding groove respectively Layer, neutral lead position and the reference groove relative position of W phase winding coils differ 15 grooves clockwise or counterclockwise, and The neutral lead of W phase winding coils is located at the 4th layer in corresponding groove.
Alternatively, the outlet lead-out wire and neutral lead are linear conductor, and the bridging coil is hairpin-type Square coil.
Alternatively, the linear conductor and the hairpin-type square coil are copper, aluminium or copper aluminium mixture by material In any material made of electric conductor formed.
Alternatively, the A/F of the stator slot is less than or equal to 1.5mm.
Alternatively, the size of the core size and stator slot of the linear conductor and the hairpin-type square coil meets Following relation:Core body length≤(stator slot length -1.4mm)/4;Core body width≤stator well width -0.6mm.
Compared with prior art, beneficial effects of the present invention are:The stator winding of alternating current generator provided by the invention, by In being placed in rectangular channel using square coil, compared to circular coil, between its conductor, the air gap and wire insulation of conductor and groove Area greatly reduces, and its fine copper copper factor can bring up to 64% to 75%, so as to reduce the copper loss of motor, improves the effect of motor Rate.In addition, the stator winding of the generator of the present invention, compared to circular coil Distributed Winding, its end size can be reduced 30% or so, and its connection and outlet more have regularity, it is possible to reduce winding coiling mistake, production process are also very easy Investigate winding mistake.Further, it is possible to the performance of generator is improved while generator volume is reduced, simultaneously as generating electricity The reduction of machine winding coil end size, the copper consumption of winding coil can be reduced, and can further reduce the cost of motor.Compare In other square winding modes, this winding mode winding coil dimensional form is relatively uniform, and production process is relatively easy.
Brief description of the drawings
Fig. 1 is the schematic cross-section of the stator core of the present invention.
Fig. 2 is the partial enlarged drawing in the stator core section of the present invention.
Fig. 3 is the winding schematic diagram of the stator winding U phases of one embodiment of the invention.
Fig. 4 is the distribution map of the threephase stator winding of one embodiment of the invention.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool Body embodiment is described in detail.
As shown in figure 1, the stator winding of alternating current generator provided by the invention is placed in stator core 1.Stator core 1 Hollow circle tube can be formed generally as.Although being not shown, rotor may be disposed inside stator core 1, and rotor may include to revolve Rotating shaft and rotatably formed.The central shaft that the stator core 1 may be provided with towards stator core be radially formed 48 Individual groove 11, preferably rectangular stator slot.In one example, the A/F of stator slot is less than or equal to 1.5mm.The generating applied The magnetic pole logarithm p=4 of machine, stator coil are wound around groove.The winding uses distributed winding, is square line by cross sectional shape Circle be inserted into stator slot, be sequentially connected according to certain rule for example weld the stator to form the alternating current generator around Group.
The winding is embodied as the diametral winding structure of the pitch of three-phase 6, and its parallel branch number can be 2 or 1.It is described fixed Sub- winding is 3 phases, then MgO-ZrO_2 brick q=2.Each stator slot shape turns into 4 Rotating fields, according to stator radial direction from outside to The 1st layer, the 2nd layer, the 3rd layer, the 4th layer is inside followed successively by, the winding coil in each stator slot belongs to same phase.
Winding coil can be hairpin-type square coil, and the winding coil can be the copper cash that cross section is in flat, winding wire Circle is in similar U-shaped or V-type and has a pair of legs for extending formation along its length and connect the head of two legs, and this one Free end can be referred to as to leg, referred to as connection end is connected with the other end of free end.Hairpin-type square coil is inserted into stator iron In the groove of core, and one end of leg is reached outside stator slot.The part that leg is stretched out is flexible, welding, each other electricity Connection.It is, multiple separated winding coils are inserted into the groove of stator core, and welded successively according to certain rule Connect, ultimately form the stator and its winding of a kind of alternating current generator.In the present invention, hairpin-type square coil can be by material Electric conductor made of any material in copper, aluminium or copper aluminium mixture is formed, the core body and stator slot of hairpin-type square coil Between meet following size relationship:Core body length≤(stator slot length -1.4mm)/4;Core body width≤stator well width- 0.6mm.So, the copper factor of the stator slot 111 of stator core is remarkably improved using such square conductor hairpin, so as to drop Low-loss, improve electric efficiency.
It is the 1st groove that any one groove is selected in the stator core, and the 1st groove can arrange in a clockwise direction to the 48th groove, Or the 1st groove can be arranged in a counterclockwise direction to the 48th groove, the present embodiment for clockwise arrange, as shown in Figure 1.Each rectangle Groove 11 has four layers by the arrangement point of the winding coil in it, as shown in Fig. 2 it is followed successively by from outside to inside by the radial direction of iron core 1 1st layer 111, the 2nd layer 112, the 3rd layer 113, the 4th layer 114.
In one embodiment of this invention, stator winding (U1, U2/V1, V2/ of the tunnel of three-phase 26 pitches in parallel are being implemented W1, W2) in, it may include 2 outlet lead-out wires, 2 neutral leads, 14 big hairpin-type square coil, 14 per phase coil Individual bobby pin formula square coil, 2 bridging coils, wherein big hairpin-type square coil, which is two legs, can be respectively inserted in two grooves Number difference is the 1st layer and the 4th layer of coil of 6 groove, and bobby pin formula square coil is that two legs can be respectively inserted in two grooves Number difference is the coil of the layers 2 and 3 of 6 groove, and bridging coil is that can be respectively inserted in two slot numbers difference be 6 for two legs The 3rd layer and the 1st layer of groove.If a selected stator slot is reference groove, the stator winding of the tunnel of three-phase 26 pitches in parallel In a phase winding coil (such as U phases) outlet draw line position differ 0 groove or inverse time clockwise with reference groove relative position Pin differs 1 groove, and outlet lead-out wire is located at the 2nd layer in groove, neutral lead position and the reference of the winding coil Groove relative position 7 grooves of 6 grooves of difference or difference counterclockwise, and neutral lead is located at the 4th layer in groove clockwise;Three Line position and reference groove phase are drawn in the outlet of a phase winding coil (such as V phases) in the stator winding of the tunnel of phase 26 pitches in parallel 4 grooves of difference clockwise to position or 5 grooves of difference, and outlet lead-out wire is located at the 2nd layer in groove, the winding wire counterclockwise The neutral lead position of circle differs 10 grooves with reference groove relative position or differs 11 grooves counterclockwise clockwise, and in Property point lead-out wire is located at the 4th layer in groove;A phase winding coil (such as W in the stator winding of 6 in parallel pitches of the tunnel of three-phase 2 Phase) outlet draw line position and differ 8 grooves clockwise with reference groove relative position or counterclockwise differ 9 grooves, and outlet Lead-out wire is located at the 2nd layer in groove, and the neutral lead position of the winding coil differs clockwise with reference groove relative position 14 grooves or 15 grooves of difference, and neutral lead is located at the 4th layer in groove counterclockwise.
In another embodiment of the invention, implement three-phase 1 tunnel 6 pitches in parallel stator winding (U1, U2/V1, V2/W1, W2) in, there are 1 outlet lead-out wire, 1 neutral lead, 2 connecting line lead-out wires, 14 big hair per phase coil Clip square coil, 14 bobby pin formula square coils, 2 bridging coils, wherein big hairpin-type square coil is two legs It is the 1st layer and the 4th layer of coil of 6 groove that two slot number differences, which can be respectively inserted in, and bobby pin formula square coil is two legs Portion can be respectively inserted in coil of two slot numbers difference for the layers 2 and 3 of 6 groove, and bridging coil is that two legs can be with It is respectively inserted in the 3rd layer and the 1st layer of the groove that two slot number differences are 6.If a selected stator slot is reference groove, three-phase 1 Line position position relative with reference groove is drawn in the outlet of a phase winding coil (such as U phases) for the stator winding of road 6 pitches in parallel Put and differ 0 groove clockwise or counterclockwise, and outlet lead-out wire is located at the 2nd layer in groove, and the connection of the phase winding coil is drawn Line position differs 6 grooves or 1 groove of difference, and the connection of the phase winding coil counterclockwise with reference groove phase position clockwise Lead-out wire is located at the 4th layer and the 2nd layer in groove respectively, the neutral lead position position relative with reference groove of the phase winding coil Put 7 grooves of difference, and the neutral lead of the phase winding coil is located at the 4th layer in groove clockwise or counterclockwise;Three-phase 1 It is relative with reference groove that line position is drawn in the outlet of a phase winding coil (such as V phases) in the stator winding of road 6 pitches in parallel Position differs 4 grooves clockwise or counterclockwise, and the outlet lead-out wire of the phase winding coil is located at the 2nd layer in groove, the phase The connection of winding coil draws line position and differs 10 grooves or counterclockwise 5 grooves of difference clockwise with reference groove phase position, and And the connection lead-out wire of the phase winding coil respectively draw by the 4th layer and the 2nd layer in groove, the neutral point of the phase winding coil Line position differs 11 grooves clockwise or counterclockwise with reference groove relative position, and the neutral point of the phase winding coil is drawn Line is located at the 4th layer in groove;The outlet of a phase winding coil (such as W phases) for the stator winding of the tunnel of three-phase 16 pitches in parallel is drawn Outlet position and reference groove relative position 8 grooves of phase, and outlet lead-out wire is located at the 2nd layer in groove clockwise or counterclockwise, The connection of the phase winding coil draws line position and differs 14 grooves and 9 grooves clockwise or counterclockwise with reference groove phase position, And the 4th layer and the 2nd layer of lead-out wire respectively in groove is connected, neutral lead position and the reference of the phase winding coil Groove relative position differs 15 grooves clockwise or counterclockwise, and the neutral lead of the phase winding coil be located in groove 4 layers.
In the present invention, the structure of big hairpin-type square coil and bobby pin formula square coil is substantially similar, difference It is only that the span of the leg of two coils is different, i.e., because two legs of big hairpin-type square coil are connected to On 1 layer and the 4th layer, two legs of bobby pin formula square coil are connected in layers 2 and 3, so big hairpin-type The span of two legs of square coil is bigger than the span of two legs of lower hairpin-type square coil.In addition, in the present invention, Outlet lead-out wire and neutral lead are a linear pattern conductor, can be in copper, aluminium or copper aluminium mixture by material Electric conductor made of any material is formed.The both ends of the conductor are stretched out outside stator core, define the conductor in stator core It is free end that one end, which is leading-out terminal, defines the conductor in the other end of stator core.Wherein, the size of the core body of linear conductor Also meet following relation between the size of stator slot:Core body length≤(stator slot length -1.4mm)/4;Core body width≤fixed Pilot trench width -0.6mm.In addition, bridging coil is also hairpin-type square coil.
Hereinafter, the stator winding of 6 pitches in parallel of the tunnel of three-phase 2 to the present invention and the stator of 6 pitches of the tunnel of three-phase 1 parallel connection The specific implementation of winding is introduced.
Embodiment 1:The stator winding of the tunnel of three-phase 26 pitches in parallel
In the stator winding (U1, U2/V1, V2/W1, W2) for implementing the tunnel of three-phase 26 pitches in parallel, if the first phase U phases Leading-out terminal be set to two arbitrary adjacent slots, as shown in Figure 3 and Figure 4, in the present embodiment select the 1st groove, the 2nd groove difference For leading-out terminal U1, U2 of U phases, then U1 needs to connect coil be distributed in 1 groove, 7 grooves, 13 grooves, 19 grooves, 25 grooves, 31 grooves, 37 grooves and In 43 grooves, then the coil that U2 needs to connect is distributed in 2 grooves, 8 grooves, 14 grooves, 20 grooves, 26 grooves, 32 grooves, 38 grooves and 44 grooves.
In the present embodiment, the specific connected mode of the U1 is as follows:Outlet is placed in the 2nd layer of the 1st groove to draw Outlet;1 big hairpin-type square coil is respectively inserted in the 4th layer of the 1st layer of the 7th groove and the 13rd groove, wherein being placed on the 7th groove The 1st layer of leg and the free end of the 2nd layer of outlet lead-out wire of the 1st groove bend and be weldingly connected respectively;By 1 bobby pin Formula square coil is respectively inserted in the 2nd layer of the 3rd layer of the 19th groove and the 13rd groove, wherein being placed on the 3rd layer of leg of the 19th groove Bend and be weldingly connected respectively with the 4th layer of leg of the 13rd groove of big hairpin-type square coil described above;So take turns respectively Banish and put big hairpin-type square coil and bobby pin formula square coil, as shown in figure 3, being located at the 43rd groove respectively to leg has been placed The 1st layer and the 1st groove the 4th layer of big hair clip square coil and welded it and be located at the 1st layer of leg of the 43rd groove and last After bobby pin square coil is located at the 2nd layer of leg of the 37th groove, bridging coil is placed.As shown in figure 3, the two of coil will be bridged Leg is respectively inserted in the 3rd layer and the 1st layer of the 1st groove of the 7th groove, and it is placed on the 3rd layer of the 7th groove of leg and described above The leg of the 4th layer of the 1st groove of big hairpin-type square coil, is bent and is weldingly connected respectively;Then, by 1 bobby pin formula Square coil is respectively inserted in the 3rd layer of the 2nd layer of the 43rd groove and the 1st groove, wherein being placed on the leg and above of the 2nd layer of the 43rd groove The 1st layer of the leg that the bridging coil is located at the 1st groove bends and is weldingly connected respectively;Place in turn respectively as described above big Hairpin-type square coil and bobby pin formula square coil, as shown in figure 3, the 2nd layer that is located at the 7th groove respectively until having placed leg With the 3rd layer of the 13rd groove of bobby pin formula square coil and welded it and be located at the 2nd layer of leg of the 7th groove and last big hair clip After formula square coil is located at the 1st layer of leg of the 13rd groove, neutral lead is placed in the 4th layer of the 7th groove, by it The free end neutral lead and the leg difference of the 3rd layer of the 13rd groove of bobby pin formula square coil described above that the 4th layer of 7 grooves are curved Song is simultaneously weldingly connected, and now, the winding connection of U1 phases is completed.Herein, by U1 outlet lead-out wire stretching in leading-out terminal side Go out portion and be defined as U1, extension of the neutral lead of U1 phases in leading-out terminal side is defined as NU1.
Similarly, according to the U phase windings that shown in Fig. 3, connection extension is U2, completed until the winding at U2 ends connects, then U2 Outlet lead-out wire be located at the 2nd layer of the 2nd groove, its extension in leading-out terminal side is defined as U2;Then U2 neutral point is drawn Line is located at the 4th layer of the 8th groove, and its extension in leading-out terminal side is defined as into NU2.
Similarly, it is consistent with outlet method according to shown in Fig. 4, being connected with U phase windings, complete the winding connection of V phases, W phases.Then V1 outlet lead-out wire is located at the 2nd layer of the 5th groove, and its extension in leading-out terminal side is defined as into V1;Then V1 neutral point draws Outlet is located at the 4th layer of the 11st groove, and its extension in leading-out terminal side is defined as into NV1;Then V2 outlet lead-out wire is located at the 6th The 2nd layer of groove, its extension in leading-out terminal side is defined as V2;Then V2 neutral lead is located at the 4th layer of the 12nd groove, will Its extension in leading-out terminal side is defined as NV2;Then W1 outlet lead-out wire is located at the 2nd layer of the 9th groove, by it in leading-out terminal one The extension of side is defined as W1;Then V1 neutral lead is located at the 4th layer of the 15th groove, by its extension in leading-out terminal side It is defined as NW1;Then W2 outlet lead-out wire is located at the 2nd layer of the 10th groove, and its extension in leading-out terminal side is defined as into W2;Then W2 neutral lead is located at the 4th layer of the 16th groove, and its extension in leading-out terminal side is defined as into NW2.Finally, U, V and W Distribution and outlet position of the three-phase windings in stator slot are as shown in Figure 4.
U1 is respectively welded with U2, V1 with V2, W1 with W2 and is connected, as the leading-out terminal of U, V, W three-phase windings, by NU1, NV1 is respectively welded with NW1 and NU2, NV2 with NW2 to be connected, two neutral points as winding connection.
Embodiment 2:The stator winding of the tunnel of three-phase 16 pitches in parallel
In the stator winding (U1, U2/V1, V2/W1, W2) for implementing the tunnel of three-phase 16 pitches in parallel, if U phase leading-out terminals Two arbitrary adjacent slots are set to, as shown in Figure 3 and Figure 4, it is respectively going out for U phases that the present embodiment, which selects the 1st groove, the 2nd groove, Line end U1, U2, the then coil that U1 needs to connect are distributed in 1 groove, 7 grooves, 13 grooves, 19 grooves, 25 grooves, 31 grooves, 37 grooves and 43 grooves, then The coil that U2 needs to connect is distributed in 2 grooves, 8 grooves, 14 grooves, 20 grooves, 26 grooves, 32 grooves, 38 grooves and 44 grooves.
In the present embodiment, the specific connected mode of the U1 is as follows:Outlet is placed in the 2nd layer of the 1st groove to draw Outlet;1 big hairpin-type square coil is respectively inserted in the 4th layer of the 1st layer of the 7th groove and the 13rd groove, wherein being placed on the 7th groove The free end outlet lead-out wire of the 2nd layer of 1st layer of leg and the 1st groove bends and is weldingly connected respectively;1 bobby pin formula is square Coil is respectively inserted in the 2nd layer of the 3rd layer of the 19th groove and the 13rd groove, wherein being placed on the 3rd layer of the leg and above of the 19th groove The leg of the 4th layer of the 13rd groove of the big hairpin-type square coil bends and is weldingly connected respectively;So place in turn respectively big Hairpin-type square coil and bobby pin formula square coil, as shown in figure 3, being located at the 1st layer of the 43rd groove respectively to leg has been placed With the 4th layer of the 1st groove of big hair clip square coil and welded it and be located at the 1st layer of leg of the 43rd groove and last bobby pin side After shape coil is located at the 2nd layer of leg of the 37th groove, bridging coil is placed.As shown in figure 3, two legs for bridging coil are distinguished It is inserted in the 3rd layer and the 1st layer of the 1st groove of the 7th groove, it is placed on the 3rd layer of the 7th groove of leg and big coil described above The leg of 1st the 4th layer of groove bends and is weldingly connected respectively;1 bobby pin formula square coil is respectively inserted in the 2nd layer of the 43rd groove With the 3rd layer of the 1st groove, wherein be placed on the 2nd layer of the 43rd groove leg and it is described above bridging coil the 1st layer of the 1st groove leg Portion bends and is weldingly connected respectively;Place big hairpin-type square coil and the square line of bobby pin formula in turn respectively as described above Circle, as shown in figure 3, until has placed leg be located at respectively the 2nd layer of the 7th groove and the 13rd groove the 3rd layer of bobby pin formula it is square Coil has simultaneously welded the leg that it is located at the 2nd layer of leg of the 7th groove and last big hairpin-type square coil is located at the 1st layer of the 13rd groove Afterwards, in the 4th layer of the 7th groove place connecting line lead-out wire, by its 7th groove the 4th layer of free end connecting line lead-out wire and The 3rd layer of the leg that bobby pin formula square coil described above is located at the 13rd groove bends and is weldingly connected respectively, now, U1 phases Winding connection is completed.Herein, extension of the U1 outlet lead-out wire in leading-out terminal side is defined as U1, by the connection of U1 phases Extension of the line lead-out wire in leading-out terminal side is defined as NU1.
Similarly, according to the U phase windings that shown in Fig. 3, connection extension is U2, until the winding connection at U2 ends is completed, now, Then U2 the 2nd connecting line lead-out wire is located at the 2nd layer of the 2nd groove, and its extension in leading-out terminal side is defined as into U2;Then U2 Connect the 4th layer that neutral lead is located at the 8th groove, its extension in leading-out terminal side is defined as NU2.
Similarly, it is consistent with outlet method according to shown in Fig. 4, being connected with U phase windings, complete the winding connection of V phases, W phases.Then V1 outlet lead-out wire is located at the 2nd layer of the 5th groove, and its extension in leading-out terminal side is defined as into V1;Then V1 the 1st connection Line lead-out wire is located at the 4th layer of the 11st groove, and its extension in leading-out terminal side is defined as into NV1;Then the 3rd of V2 is drawn with connecting line Outlet is located at the 2nd layer of the 6th groove, and its extension in leading-out terminal side is defined as into V2;Then V2 neutral lead is located at The 4th layer of 12nd groove, its extension in leading-out terminal side is defined as NV2;Then W1 outlet lead-out wire is located at the of the 9th groove 2 layers, its extension in leading-out terminal side is defined as W1;Then V1 the 1st connecting line lead-out wire is located at the 4th of the 15th groove Layer, NW1 is defined as by its extension in leading-out terminal side;Then W2 the 2nd connecting line lead-out wire is located at the 2nd of the 10th groove Layer, W2 is defined as by its extension in leading-out terminal side;Then W2 neutral lead is located at the 4th layer of the 16th groove, by it Extension in leading-out terminal side is defined as NW2.Finally, distribution and outlet position of U, V and W three-phase windings in stator slot be such as Shown in Fig. 4.
By U1, V1, W1, the leading-out terminal as U, V, W three-phase windings;U2 and NU1, V2 and NV1, W2 and NW1 are welded respectively Connect connected;NU2, NV2, NW2 are weldingly connected, two neutral points as winding connection.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (6)

1. a kind of stator winding of alternating current generator, it is characterised in that the stator includes 8 poles and 48 equidistantly opened up Rectangular stator groove, the winding use distributed winding, wherein, it is that square coil is inserted into the stator slot by cross sectional shape In, the winding is embodied as the full section of the diametral winding structure of the tunnel of 3 phase 26 pitches in parallel or 6 pitches of the tunnel of 3 phase 1 parallel connection Away from winding construction, MgO-ZrO_2 brick 2, each square coil be inserted into the different layers of two different stator slots on stator by Being connected according to predetermined rule to form the stator winding, the winding coil in each groove belongs to same phase,
Wherein, radial direction of the square coil along the stator core is formed according to stator in the stator slot of the stator core Be arranged in order from outside to inside the 1st layer to the 4th layer of radial direction;And
In the case where being embodied as the diametral winding structure of the tunnel of 3 phase 26 pitches in parallel, include 2 outlets per phase winding coil Lead-out wire, 2 neutral leads, 14 big hairpin-type square coil, 14 bobby pin formula square coils and 2 jumpers Circle, wherein, the big hair-pin coil and the bobby pin formula coil and the jumper cast, which turn into, has a pair of legs U-shaped or V-type, a pair of legs of the big hair-pin coil insert respectively and be fastened to that pitch is 6 the 1st layer of two grooves and 4th layer, a pair of legs of the bobby pin formula coil are inserted and are fastened to the 2nd layer and the 3rd of two grooves that pitch is 6 respectively Layer, a pair of legs of the bridging coil are inserted and are fastened to the 3rd layer and the 1st layer of two grooves that pitch is 6 respectively;If choosing A fixed stator slot is reference groove, then the outlet of U phase windings coil draws line position and differs 0 clockwise with reference groove relative position Groove or 1 groove of difference, and the outlet lead-out wire of U phase winding coils is located at the 2nd layer in corresponding groove, U phase winding lines counterclockwise The neutral lead position of circle differs 6 grooves or 7 grooves of difference, and U phases counterclockwise with reference groove relative position clockwise The neutral lead of winding coil is located at the 4th layer in corresponding groove;Line position and reference groove are drawn in the outlet of V phase winding coils Relative position 5 grooves of 4 grooves of difference or difference counterclockwise, and the outlet lead-out wire of V phase winding coils is positioned at corresponding clockwise The 2nd layer in groove, the neutral lead position of V phase winding coils differs 10 grooves or inverse clockwise with reference groove relative position Hour hands differ 11 grooves, and the neutral lead of V phase winding coils is located at the 4th layer in corresponding groove;W phase winding coils Outlet draws line position and differs 8 grooves or 9 grooves of difference, and W phase winding lines counterclockwise clockwise with reference groove relative position The outlet lead-out wire of circle is located at the 2nd layer in corresponding groove, the neutral lead position position relative with reference groove of W phase winding coils Put 14 grooves of difference clockwise or 15 grooves of difference, and the neutral lead of W phase winding coils is located at corresponding groove counterclockwise Interior the 4th layer.
2. the stator winding of alternating current generator according to claim 1, it is characterised in that be embodied as the parallel connection of the tunnel of 3 phase 1 In the case of the diametral winding structure of 6 pitches, include per phase winding coil 2 outlet lead-out wires, 2 neutral leads, 14 big hairpin-type square coil, 14 bobby pin formula square coils, 2 bridging coils, wherein, the big hair-pin coil and The bobby pin formula coil and the jumper cast turn into the U-shaped or V-type with a pair of legs, the big hair-pin coil A pair of legs insert respectively and be fastened to the 1st layer and the 4th layer of two grooves that pitch is 6, the one of the bobby pin formula coil Leg is inserted respectively and is fastened to the layers 2 and 3 for two grooves that pitch is 6, a pair of leg sections of the bridging coil Do not insert and be fastened to the 3rd layer and the 1st layer of two grooves that pitch is 6;If a selected stator slot is reference groove, U phases The outlet of winding coil draws line position and differs 0 groove, and U phase winding coils clockwise or counterclockwise with reference groove relative position Outlet lead-out wire be located at the 2nd layer in corresponding groove, line position is drawn in the connection of U phase winding coils and reference groove phase position is suitable Hour hands differ 6 grooves or counterclockwise 1 groove of difference, and the connection lead-out wire of U phase winding coils is located in corresponding groove respectively 4th layer and the 2nd layer, the neutral lead position of U phase winding coils differs 7 clockwise or counterclockwise with reference groove relative position Individual groove, and the neutral lead of U phase winding coils is located at the 4th layer in corresponding groove;The outlet lead-out wire of V phase winding coils Position differs 4 grooves clockwise or counterclockwise with reference groove relative position, and the outlet lead-out wire of V phase winding coils is located at phase The 2nd layer in groove is answered, the connection of V phase winding coils draws line position and differs 10 grooves or inverse clockwise with reference groove phase position Hour hands differ 5 grooves, and the connection lead-out wire of V phase winding coils respectively be located at corresponding groove in the 4th layer and the 2nd layer, V phases around The neutral lead position of group coil differs 11 grooves, and V phase windings clockwise or counterclockwise with reference groove relative position The neutral lead of coil is located at the 4th layer in corresponding groove;It is relative with reference groove that line position is drawn in the outlet of W phase winding coils Position differs 8 grooves clockwise or counterclockwise, and outlet lead-out wire is located at the 2nd layer in corresponding groove, the company of W phase winding coils Connect and draw line position and reference groove phase position and differ 14 grooves and 9 grooves clockwise or counterclockwise, and W phase winding coils Connect the 4th layer and the 2nd layer of lead-out wire respectively in corresponding groove, neutral lead position and the reference of W phase winding coils Groove relative position differs 15 grooves clockwise or counterclockwise, and the neutral lead of W phase winding coils is located in corresponding groove The 4th layer.
3. the stator winding of alternating current generator according to claim 1 or 2, it is characterised in that the outlet lead-out wire and Neutral lead is linear conductor, and the bridging coil is hairpin-type square coil.
4. the stator winding of alternating current generator according to claim 3, it is characterised in that the linear conductor and described Hairpin-type square coil electric conductor made of material is any material in copper, aluminium or copper aluminium mixture is formed.
5. the stator winding of alternating current generator according to claim 1, it is characterised in that the A/F of the stator slot Less than or equal to 1.5mm.
6. the stator winding of alternating current generator according to claim 3, it is characterised in that the linear conductor and described The core size of hairpin-type square coil and the size of stator slot meet following relation:Core body length≤(stator slot length- 1.4mm)/4;Core body width≤stator well width -0.6mm.
CN201710855183.9A 2017-09-20 2017-09-20 A kind of stator winding of alternating current generator Pending CN107565720A (en)

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CN110266134A (en) * 2019-07-30 2019-09-20 重庆宗申电动力科技有限公司 Two branch phase windings of one kind, stator and motor
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CN110784045B (en) * 2018-07-29 2021-09-21 比亚迪股份有限公司 Stator assembly and motor with same
CN110784042B (en) * 2018-07-29 2021-09-21 比亚迪股份有限公司 Stator assembly and motor with same
CN110784043B (en) * 2018-07-29 2021-09-21 比亚迪股份有限公司 Stator assembly and motor with same
CN110971042A (en) * 2018-09-28 2020-04-07 比亚迪股份有限公司 Stator assembly and motor with same
CN110971041B (en) * 2018-09-28 2022-05-13 比亚迪股份有限公司 Stator assembly and motor with same
CN110971042B (en) * 2018-09-28 2022-04-15 比亚迪股份有限公司 Stator assembly and motor with same
CN110971040B (en) * 2018-09-28 2021-09-03 比亚迪股份有限公司 Stator assembly and motor with same
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CN109510356A (en) * 2018-11-22 2019-03-22 中国第汽车股份有限公司 A kind of three-phase flat wire motor stator winding
CN109510356B (en) * 2018-11-22 2024-06-04 中国第一汽车股份有限公司 Stator winding of three-phase flat wire motor
CN111293811B (en) * 2019-01-16 2021-12-24 上海汽车集团股份有限公司 Winding structure for motor and motor
CN111293811A (en) * 2019-01-16 2020-06-16 上海汽车集团股份有限公司 Winding structure for motor and motor
CN110266134A (en) * 2019-07-30 2019-09-20 重庆宗申电动力科技有限公司 Two branch phase windings of one kind, stator and motor
JP2021090277A (en) * 2019-12-04 2021-06-10 三菱電機株式会社 Rotary electric machine
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