CN107492959A - A kind of stator of new winding electric machine - Google Patents
A kind of stator of new winding electric machine Download PDFInfo
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- CN107492959A CN107492959A CN201710855518.7A CN201710855518A CN107492959A CN 107492959 A CN107492959 A CN 107492959A CN 201710855518 A CN201710855518 A CN 201710855518A CN 107492959 A CN107492959 A CN 107492959A
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- stator
- hair clip
- hairpin
- slot
- layer
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- 238000004804 winding Methods 0.000 title claims abstract description 83
- 238000005452 bending Methods 0.000 claims abstract description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 4
- 239000011295 pitch Substances 0.000 claims description 32
- 230000007935 neutral effect Effects 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000008094 contradictory effect Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention discloses a kind of stator of new winding electric machine, including stator core and stator winding, the stator core has the 48 rectangular stator grooves separated with preset distance, the stator winding is combined by hair clip and hairpin and formed, the hair clip and hairpin insert in the stator slot according to predetermined arrangement mode and are mutually welded to connect to form the stator winding according to certain rule by BENDING PROCESS, the shape of cross section of the hair clip and the hairpin is square, the radial direction of the hair clip and the hairpin along the stator core forms the 1st layer to the 4th layer be arranged in order from outside to inside according to stator radial direction in the stator slot of the stator core.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
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 of the new winding electric machine 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 stator winding.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 motor stator winding 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 hairpin-type winding, the coiling of machine winding is carried out using square coil, but their disclosed connected modes are complicated, no
Beneficial to production；Patent document 3 (CN201110358151.0) and patent document 4 (CN201510312428.4) individually disclose one
The method for winding of the square coil of kind stator core, but it is directed to the motor of 108 grooves, 120 grooves and 126 grooves respectively, for 48
The motor of groove does not apply to simultaneously, and it is too high to easily cause the back-emf of motor, exist for 48V systems can not high-speed power generation the problems such as.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of stator of new winding electric machine, and its object is to solve at present
Contradictory problems between generator performance and volume, the height of Generator Stator Winding Ends is reduced, reduce the entirety of generator
Volume, increase winding copper factor, improve generator performance.
The technical solution adopted by the present invention is：
The embodiment of the present invention provides a kind of stator of new winding electric machine, and the stator includes hollow circle tube stator core
And stator coil, the stator core, which has, to be formed in the inner radial surface of stator core and in the week of the stator core
To side it is spaced up it is multiple axially through stator slot；The stator coil is combined by hair clip and hairpin and formed, the hair clip
Inserted with hairpin according to predetermined arrangement mode in the stator slot and mutually weld and connect according to certain rule by BENDING PROCESS
Connect to form the stator coil, the hair clip and the hairpin part are contained in the stator slot so as to from stator core
A pair of end turn parts that a pair of axial ends of body protrude respectively, one end of corresponding stator outlet is referred to as leading-out terminal, another
End is referred to as free end, and the shape of cross section of the hair clip and the hairpin is square, and the hair clip and the hairpin are along described fixed
The radial direction of sub- core body is formed in the stator slot of the stator core and is arranged in order from outside to inside according to stator core radial direction
The 1st layer to the 4th layer；Wherein, the stator coil is welded in free end and coats insulating materials, and two circles are formed in free end
Solder joint, the solder joint of formation is circumferentially evenly distributed in stator free end, and the axially projecting height basic one in free end pad portion
Cause；The stator coil forms the small projection of the loop-shaped of raised inner sleeve one rule of loop-shaped rule in leading-out terminal, described convex
Rise it is circumferentially evenly distributed in the leading-out terminal and axially projecting highly basically identical, the small projection is included in the projection
Axially inner side, shape size is basically identical.
Alternatively, the stator core offers the stator slot of 48 rectangles in circumferential direction at equal intervals, the hair applied
Motor is 8 poles；The stator coil connects to form stator winding, and the stator winding is embodied as three-phase windings structure, and described three
The MgO-ZrO_2 brick q=2 of phase winding structure, way in parallel are 1 or 2, slot pitch 6.
Alternatively, one in two hairpins and/or hair clip has from the end that a certain layer in the stator slot is drawn
Part, and another has the end of the end sections drawn from the different layers in the stator slot, two hairpins and/or hair clip
Part is weldingly connected in the free end of stator core and forms connecting portion, and the end sections of two hairpins and/or hair clip
Distance is 6 slot pitches.
Alternatively, the hair clip includes big hair clip, middle hair clip and bobby pin；The stator coil is per mutually comprising 2 by institute
The leading-out terminal of hair clip formation, 2 neutral points formed by the hair clip are stated, 12 spans are located at respectively for the free end of 6 slot pitches
First layer and the 4th layer of big hair clip and 12 spans are located at the second layer and the small hair of third layer respectively for the free end of 6 slot pitches
Folder, 2 spans are located at the middle hair clip of third layer and first layer for the free end of 6 slot pitches respectively.
Alternatively, in the outside of stator coil end and axially projecting described in the placement of connecting portion axial direction, and substantially
On do not protruded partially radially from end turn.
Alternatively, the hair clip is formed as U-shaped or V-arrangement, have a pair freedom portion extended along its length with it is described from
The head being bent to form connected by portion, the hairpin are formed as linear, including a line part and connect with the line part
The bending section connect.
Alternatively, the hair clip and the hairpin electricity made of material is any material in copper, aluminium or copper aluminium mixture
Conductor is formed.
Alternatively, the A/F of the stator slot is less than or equal to 1.5mm
Alternatively, the core size of the hair clip and hairpin 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.
The beneficial effects of the invention are as follows：The winding coil of the stator of new winding electric machine provided by the invention, due to using
Square coil is placed in rectangular channel, compared to circular coil, between its conductor, the air gap and wire insulation area of conductor and groove it is big
Big to reduce, its fine copper copper factor can bring up to 64% to 75%, so as to reduce the copper loss of motor, improve the efficiency of motor.Should
The winding coil of generator, compared to circular coil Distributed Winding, its end size can reduce 30% or so, and its connection and
Outlet more has regularity, it is possible to reduce winding coiling mistake, production process also very easily investigate winding mistake.Enter one
Step, the performance of generator can be improved while generator volume is reduced, simultaneously as the reduction of its end size, winding
The copper consumption of coil can be reduced, and can further reduce the cost of motor.
Brief description of the drawings
Fig. 1 is the structural representation of the stator core of the stator of the new winding electric machine of the present invention；
Fig. 2 (a) is the schematic cross-section of the stator core of the stator of the new winding electric machine of the present invention；
Fig. 2 (b) is the partial enlarged drawing in the section of the stator core of the stator of the new winding electric machine of the present invention；
Fig. 3 is the structural representation of the hair clip used in the stator of the new winding electric machine of the present invention；
Fig. 4 is the structural representation of the hairpin used in the stator of the new winding electric machine of the present invention；
Fig. 5 is the structural representation of the hairpin bends used in the stator of the new winding electric machine of the present invention；
Fig. 6 (a) and Fig. 6 (b) is the winding distribution of the stator winding of the stator of the new winding electric machine of the embodiment of the present invention
Schematic diagram；
Fig. 7 is the stereogram of the stator of the new winding electric machine of the embodiment of the present invention；
Fig. 8 is the distribution map of the stator of the stator of the new winding electric machine of the embodiment of the present 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.
Fig. 1 is the structural representation of the stator core of the stator of the new winding electric machine of the present invention；Fig. 2 (a) is the present invention
New winding electric machine stator stator core schematic cross-section；Fig. 2 (b) is the stator of the new winding electric machine of the present invention
Stator core section partial enlarged drawing；Fig. 3 is the knot of the hair clip used in the stator of the new winding electric machine of the present invention
Structure schematic diagram；Fig. 4 is the structural representation of the hairpin used in the stator of the new winding electric machine of the present invention；Fig. 5 is the present invention
New winding electric machine stator in the structural representation of hairpin bends that uses；Fig. 6 (a) and Fig. 6 (b) is the embodiment of the present invention
New winding electric machine stator stator winding winding Distribution Principle figure；Fig. 7 is the new winding electricity of the embodiment of the present invention
The stereogram of the stator of machine；Fig. 8 is the distribution map of the stator of the stator of the new winding electric machine of the embodiment of the present invention.
The stator of new winding electric machine provided by the invention includes hollow circle tube stator core 1 and formed in the stator
Stator coil on core body 1.Formed as shown in figure 1, stator core 1 has in the inner radial surface of stator core and fixed
Separated in the circumferential direction of sub- core body it is multiple axially through rectangle stator slot 11.In one example, stator core is at it
Circumferential direction is provided with 48 rectangular channels at equal intervals, the radial direction extension of the length of rectangular channel along stator core.Although not shown, but
Rotor assembly can be matched in the radially inner side of stator core 1.Involved generator in the present invention, its rotor assembly are circular iron
The permanent magnet of core, inside configuration certain amount and shape.Involved generator amature number of pole-pairs is 4, and rotor assembly occurs
Electromagnetic action and rotate, formed the groove generator of 8 pole 48.As shown in Fig. 2 (a), any one groove can be selected in stator core 1 as the
1 groove, the 1st groove can arrange in a clockwise direction to the 48th groove, or the 1st groove can arrange in a counterclockwise direction to the 48th groove, the present invention
Embodiment for clockwise arrange.
Stator coil is made up of the multiple electric wires being placed on stator slot.The electric wire in each stator slot is placed on according to fixed
Sub- radial direction is formed can be followed successively by the 1st layer, the 2nd layer, the 3rd layer, the 4th layer from outside to inside, as shown in Fig. 2 (b), i.e. stator slot shape
As 4 Rotating fields.Coiler part is contained in the stator slot of stator core so as to a pair of axial ends from stator core
A pair of prominent end turn parts respectively, one end of corresponding stator outlet are referred to as leading-out terminal, and the other end is referred to as free end.Stator
Coil welds in free end and coats insulating materials, and it forms 2 lap welding points in free end, and the solder joint of formation is in stator free end
It is circumferential evenly distributed, free end pad side it is axially projecting highly basically identical.In addition, stator coil forms a circle in leading-out terminal
The small projection of the loop-shaped of raised inner sleeve one rule of regular shape, the projection is circumferentially evenly distributed in the leading-out terminal, and
Axially projecting highly basically identical, the small projection is included in the raised axially inner side, and shape size is basically identical
Electric wire according to certain rule connect to form stator coil, stator coil can be realized as three-phase windings structure, stator
The MgO-ZrO_2 brick q=2 of coil.In the present invention, the coil for forming stator winding can be hair clip 2 and hairpin 3, stator winding
It can be formed by combining hair clip and hairpin.By inserting multiple hair clips 2 and hairpin 3 on the stator slot 11 of stator core 1, knot
Mutually it is welded to connect together in the hair clip 2 in stator slot 11 and hairpin 3 by BENDING PROCESS according to certain rule, it is fixed so as to be formed
Sub- winding.By controlling the number, slot pitch and connected mode of hair clip 2 and hairpin 3, stator winding can be embodied as to have difference
The three-phase windings structure of structure, including the full slot pitch winding construction of in parallel 6 slot pitches in the tunnel of 3 phase 2 and the tunnel of 3 phase 16 slot pitches in parallel
Full slot pitch winding construction, then will be described in detail.
Hereinafter, the hair clip 2 and hairpin 3 used with reference to figure 3 to Fig. 5 the present invention is introduced.
As shown in figure 3, each hair clip 2 can be entirely formed to U-shaped or V-arrangement.Hair clip 2 is used to form stator winding, hair clip 2
Core body can be formed by electric conductors such as copper or aluminium, and outer layer has insulation coat of paint.Hair clip 2 possesses a pair of legs 21 and connects a pair of legs
Head 22, extension is formed along its length respectively for a pair of legs 21, keeps predetermined interval location between each other.Head 22 can
Be formed as the form with certain predetermined degreeof tortuosity.When hair clip 2 is inserted into stator slot post-processing 2, by each leg 21 with
Certain predetermined degreeof tortuosity is processed, and leg 21 is twisted into line part 211, bending part 212 and weld part 213, such as Fig. 5 institutes
Show, the corresponding position for the different layers that can be inserted respectively so as to bending part 212 in different stator slots 11.Each hair clip 2
It is all formed as one end closing, the structure of one end open.
It is linear conductor as shown in figure 4, each hairpin 3 is formed as linear, including line part and bending section.Hairpin 3
For forming stator winding, the core body of hairpin 3 is formed by electric conductors such as copper or aluminium, and outer layer has insulation coat of paint.The bending section of hairpin 3
Be formed as the form with certain predetermined degreeof tortuosity.Hairpin 3 is all formed as the structure of both ends open.
In addition, hair clip 2 is consistent with the section of hairpin 3 and the square conductor in section that may be formed to have quadrangle state, such as
Shown in Fig. 2 (b).Meet following size relationship between the coil core and stator slot of hair clip 2 and hairpin 3：Core body length≤(stator
Slot length -1.4mm)/4；Core body width≤stator well width -0.6mm.So, can be notable using such square conductor hairpin
The copper factor of the stator slot 111 of stator core is improved, so as to reduce loss, improves electric efficiency.
Various embodiments of the present invention are introduced below.
One embodiment of the invention is used for the full slot pitch winding construction for realizing the tunnel of 3 phase 26 slot pitches in parallel.In the present embodiment
In, three-phase windings include 26 hair clips 2 and 4 hairpins 3 per phase, wherein 2 hairpins 3 are outlet terminated line hairpin, 2 hairpins
3 be neutral point wiring hairpin, hairpin 2 divide for big hair clip 2, middle hair clip 2 and bobby pin 2, the interval location of the free end of three it is equal
For 6 slot pitches, the different numbers of plies for being distinguished as a pair of free ends and being located at the stator slot 11 of stator core 1 of three, wherein big hair clip 2
The 1st layer and the 4th layer of the stator slot positioned at stator core 1 of free end, the free end of middle hair clip 2 is located at stator core 1
The 3rd layer of stator slot and the 1st layer, the free end of bobby pin 2 is located at the 3rd layer and the 2nd layer of the stator slot of stator core 1.Wherein,
The hair clip 2 used in the present embodiment includes 12 big 2,2 middle hair clips 2 of hair clip and 12 bobby pins 2.In the present embodiment, such as
Fruit selectes a stator slot as reference groove, then the hairpin 3 for forming the U phase leading-out terminals of motor is located at position relative with reference groove respectively
Put 0 slot pitch of difference clockwise and 1 slot pitch the 1st layer of groove, form the V phase leading-out terminals of motor hairpin 3 be located at respectively with
Reference groove relative position differs the 1st layer of the groove of 4 slot pitches and 5 slot pitches clockwise, forms the hairpin of the W phase leading-out terminals of motor
3 respectively positioned at the 1st layer of the groove for differing 8 slot pitches and 10 slot pitches clockwise with reference groove relative position；Form in motor U phases
Property point end hairpin 3 respectively positioned at differing the 4th layer of groove of 6 slot pitches and 7 slot pitches clockwise with reference groove relative position, structure
Hairpin 3 into motor V phase neutral ends is located at reference groove relative position differs 10 slot pitches and 11 slot pitches clockwise respectively
The 4th layer of groove, the hairpin 3 for forming motor W phase neutral ends is located at differs 14 clockwise with reference groove relative position respectively
The 4th layer of the groove of slot pitch and 15 slot pitches.
In the present embodiment, specific connected mode of the 1st stator slot that selected numbering is 1 as reference groove, then each coil
For：With reference to figure 2 (a), by stator slot along being numbered clockwise as 1-48, but it is not limited thereto, can be also compiled counterclockwise
Number.One hairpin 3 is inserted from the leading-out terminal of stator core 1, its line part is located at the 2nd layer of the stator slot 11 of stator core 1 the 1st
112 positions, its freedom portion are stretched out from the free end of stator core 1, and circumferencial direction of its free end along stator core 1 is carried out
Bending machining, the free end of hairpin 3 after bending be located at the point midway of the 1st layer of circumferencial direction of the 4th groove, i.e. hairpin 3
Circumferencial direction of the free end along stator core 1 bends the degree of 3 grooves, and this 3rd hairpin is two parallel branches of U phase windings
A leading-out terminal.
Specifically, first, one big hair clip 2 is inserted from the leading-out terminal of stator core 1, two leg 21 is located at respectively
1st layer of 111 position of the 7th stator slot and the 4th layer of 114 position of the 13rd stator slot, two free end from stator core 1 from
Stretched out by end, circumferencial direction of its line part 211 along stator core 1 is subjected to bending machining, as shown in figure 5, two is rolled over
The bending direction of turn of bilge 212 is on the contrary, the free end of big hair clip 2 is located at the 2nd layer of circumferencial direction of the 4th stator slot respectively after bending
The point midway of 1st layer of circumferencial direction of point midway and the 16th stator slot.
Then, a bobby pin 3 is inserted from the leading-out terminal of stator core 1, two leg 21 is fixed positioned at the 19th respectively
3rd layer of 113 position of pilot trench and the 2nd layer of 112 position of the 13rd stator slot, two freedom portion is from the free end of stator core 1
Stretch out, circumferencial direction of its bending part 212 along stator core 1 is subjected to bending machining, as shown in figure 5, two bending part
212 bending directions are on the contrary, the free end of bobby pin 2 is located in the 2nd layer of circumferencial direction of the 16th stator slot respectively after bending
The point midway of 1st layer of circumferencial direction of point position and the 16th stator slot.
In this way, hair clip 2 and hairpin 3 are sequentially placed and bent in the way of winding connection in Fig. 6 (a), ultimately form
Form as shown in Figure 7.It is then corresponding, the hairpin 3 of U phase leading-out terminals of motor is formed respectively positioned at the 1st groove of stator core
The 2nd layer of 2nd groove of the 2nd layer and stator core, the hairpin 3 for forming the V phase leading-out terminals of motor are located at the 5th of stator core respectively
The 2nd layer of groove and the 2nd layer of the 6th groove of stator core, the hairpin 3 for forming the W phase leading-out terminals of motor is located at stator core respectively
The 2nd layer of the 9th groove and the 2nd layer of the 10th groove of stator core, form the hairpin 3 of motor U phase neutral ends respectively positioned at fixed
The 4th layer of 7th groove of sub- core body and the 4th layer of the 8th groove of stator core, the hairpin 3 for forming motor V phase neutral ends distinguishes position
In the 4th layer of the 4th layer of the 11st groove of stator core and the 12nd groove of stator core, the hairpin 3 of motor W phase neutral ends is formed
It is located at the 4th layer of the 4th layer of the 15th groove of stator core and the 16th groove of stator core respectively.Finally, U, V, W three-phase windings exist
Distribution and outlet position in stator slot is as shown in Figure 8.
As shown in Figure 7 and Figure 8, above-mentioned three-phase leading-out terminal is connected with terminal respectively, two groups of neutral points of three-phase is connected
Connect, ultimately form stator core stereogram as shown in Figure 7.It follows that in the present embodiment, hairpin 3 is arranged in numbering and is
1st, in 2,5,6,7,8,9,10,11,12,15,16 stator slot.As shown in Figure 7 and Figure 8, in the leading-out terminal of stator core 1, hair
Circumferencial direction of the bending section of folder 2 along stator core 1 is with circle or the continuous configuration of annular；In the free end of stator core 1
Along the circumferencial direction of stator core 1 with circle or the continuous configuration of annular after the bending of the free end of hair clip 2 and hairpin 3, according to figure
In visible hairpin free end the free end of stator core respectively circumferentially with radial direction proper alignment, corresponding number of slots,
Circumferential is 48 groups, and the corresponding number of plies of stator core rectangular channel 11, is 4 layers in radial direction, the configuration of the free end of stator core 1 can
The structure with reference to shown in figure 7 and Fig. 8.Phase is respectively welded in the weld part 213 of the hair clip 2 of the free end of stator core 1 and hairpin 3
Even, radially 4 layers of first layer is respectively welded with 48 bond pads portions 213 of the second layer and be connected, radially 4 layers of third layer and the 4th
48 bond pads portion 213 of layer are respectively welded connected.Because the hairpin free end of the free end of stator core 1 is close toward each other, hold
The problem of decreasing insulating of motor easily occurs, in order to ensure its insulating properties, hairpin weld part 213 after having welded thereon
Insulating powder is coated, to ensure the insulating properties of motor.Meanwhile it is also required to keep necessarily in the bending section of each hairpin of motor
Shape between each hairpin to maintain a certain distance, so as to ensure the insulating properties of motor.
Another embodiment of the present invention is used for the full slot pitch winding construction for realizing the tunnel of 3 phase 16 slot pitches in parallel.The present embodiment
Winding construction it is identical with the used hairpin type of previous embodiment, difference is the attachment structure of hair clip and hairpin
It is different.
Specifically, in the present embodiment, the 1st stator slot that selected numbering is 1 is reference groove, then the specific connection of each coil
Mode is：With reference to figure 2 (a), by stator slot along being numbered clockwise as 1-48, but it is not limited thereto, can also enters counterclockwise
Line number.
One hairpin 3 is inserted from the leading-out terminal of stator core 1, its line part is located at the stator slot 11 of stator core 1 the 1st
2nd layer of 112 position, its freedom portion is stretched out from the free end of stator core 1, by circumference side of its free end along stator core 1
To bending machining is carried out, the free end of hairpin 3 after bending is located at the point midway of the 1st layer of circumferencial direction of the 4th groove, that is, sent out
Circumferencial direction of the free end of pin 3 along stator core 1 bends the degree of 3 grooves, and this hairpin is two parallel branches of U phase windings
A leading-out terminal.
One big hair clip 2 is inserted from the leading-out terminal of stator core 1, two leg 21 is respectively positioned at the 7th stator slot
1st layer of 111 position and the 4th layer of 114 position of the 13rd stator slot, two free end are stretched out from the free end of stator core 1, will
Circumferencial direction of its line part 211 along stator core 1 carries out bending machining, as shown in figure 5, two bending part 212 is bent
In the opposite direction, after bending the free end of big hair clip 2 respectively positioned at the 4th stator slot the 2nd layer of circumferencial direction point midway and
The point midway of 1st layer of circumferencial direction of the 16th stator slot.
Then, a bobby pin 3 is inserted from the leading-out terminal of stator core 1, two leg 21 is fixed positioned at the 19th respectively
3rd layer of 113 position of pilot trench and the 2nd layer of 112 position of the 13rd stator slot, two freedom portion is from the free end of stator core 1
Stretch out, circumferencial direction of its bending part 212 along stator core 1 is subjected to bending machining, as shown in figure 5, two bending part
212 bending directions are on the contrary, the free end of bobby pin 2 is located in the 2nd layer of circumferencial direction of the 16th stator slot respectively after bending
The point midway of 1st layer of circumferencial direction of point position and the 16th stator slot.
In this way, hair clip 2 and hairpin 3 are sequentially placed and bent in the way of winding connection in Fig. 6 (b), finally can shape
Into the form shown in Fig. 7.It is then corresponding, form the U phase leading-out terminals of motor hairpin 3 be located at stator core the 1st groove the 2nd
Layer, the hairpin 3 for forming the V phase leading-out terminals of motor are located at the 2nd layer of the 5th groove of stator core, form the W phase leading-out terminals of motor
Hairpin 3 is located at the 2nd layer of the 9th groove of stator core, and the hairpin 3 for forming motor U phase neutral ends is located at the 7th groove of stator core
The 4th layer, the hairpin 3 for forming motor V phase neutral ends be located at the 4th layer of the 11st groove of stator core, forms motor W phases neutrality
The hairpin 3 at point end is located at the 4th layer of the 15th groove of stator core.By the above-mentioned three-phase leading-out terminal of the present embodiment respectively with terminal phase
Connection, two groups of neutral points of three-phase are connected, ultimately form the form shown in Fig. 7 and Fig. 8.It follows that in the present embodiment,
Hairpin 3 is arranged in the stator slot that numbering is 1,5,8,9,12,16.On the leading-out terminal of stator core 1, the bending section edge of hair clip 2
The circumferencial direction for stator core 1 is matched somebody with somebody with circle or the continuous configuration of annular, the final of the leading-out terminal of the stator core 1 of the present embodiment
Put form and refer to form shown in Fig. 7；The free end of stator core 1 hair clip 2 and hairpin 3 free end bending after along
The circumferencial direction of stator core 1 is with circle or the continuous configuration of annular, according to the free end of visible hairpin in figure in stator core
Free end corresponding number of slots, is being respectively circumferentially 48 groups circumferentially with radial direction proper alignment, corresponding stator core rectangular channel 11
The number of plies, it is 4 layers in radial direction, the final configuration of the free end of the stator core 1 of the present embodiment refers to the shape shown in Fig. 8
State.The hair clip 2 of the free end of stator core 1 is respectively welded with the weld part 213 of hairpin 3 and is connected, by radially 4 layers of first layer
It is respectively welded and is connected with 48 bond pads portions 213 of the second layer, radially 4 layers of third layer and the 4th layer of 48 bond pads portion 213 is distinguished
It is weldingly connected.Because the hairpin free end of the free end of stator core 1 is close toward each other, the insulating properties of motor easily occur
The problem of decline, in order to ensure that its insulating properties, hairpin weld part 213 coat insulating powder thereon after having welded, to ensure
The insulating properties of motor.Meanwhile be also required to keep in the bending section of each hairpin of motor certain shape so as to each hairpin it
Between maintain a certain distance, so as to ensure the insulating properties of motor.
As described above, in the present invention, each hairpin for forming stator winding mutually bends connection and in stator core
The projection of formation rule is distinguished at both ends, can effectively reduce the end height of motor stator winding.And the head shaft of hairpin
To the outside that is placed in stator coil end and axially projecting, and it is not protruded partially radially from end turn substantially.
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 (9)
- A kind of 1. stator of winding electric machine, it is characterised in that the stator includes hollow circle tube stator core and stator coil, The stator core have formed in the inner radial surface of stator core and in the circumferential direction of the stator core every Open it is multiple axially through stator slot；The stator coil is combined by hair clip and hairpin and formed, the hair clip and hairpin according to Predetermined arrangement mode insert in the stator slot and be mutually welded to connect by BENDING PROCESS according to certain rule to be formed it is described Stator coil, the hair clip and the hairpin part are contained in the stator slot so as to a pair of axles from stator core To end face, prominent a pair of end turn parts, one end of corresponding stator outlet are referred to as leading-out terminal respectively, and the other end is referred to as freely The shape of cross section of end, the hair clip and the hairpin is square, the footpath of the hair clip and the hairpin along the stator core Be arranged in order from outside to inside according to stator core radial direction the 1st layer is formed into the stator slot in the stator core to the 4 layers；Wherein, the stator coil welds in free end and coats insulating materials, and forms 2 lap welding points in free end, formation Solder joint is circumferentially evenly distributed in stator free end, and free end pad portion is axially projecting highly basically identical；The stator Coil forms the small projection of the loop-shaped of raised inner sleeve one rule of loop-shaped rule in leading-out terminal, and the projection is in the outlet End is circumferential evenly distributed and axially projecting highly basically identical, and the small projection is included in the raised axially inner side, shape Shape size is basically identical.
- 2. stator according to claim 1, it is characterised in that the stator core offers 48 at equal intervals in circumferential direction The stator slot of individual rectangle, the generator applied are 8 poles；The stator coil connects to form stator winding, the stator winding It is embodied as three-phase windings structure, the MgO-ZrO_2 brick q=2 of the three-phase windings structure, way in parallel is 1 or 2, and slot pitch is 6。
- 3. stator according to claim 2, it is characterised in that one in two hairpins and/or hair clip has from described The end sections that a certain layer in stator slot is drawn, and another has the end portion drawn from the different layers in the stator slot Point, the end sections of two hairpins and/or hair clip are weldingly connected in the free end of stator core and form connecting portion, and two The distance of the end sections of hairpin and/or hair clip is 6 slot pitches.
- 4. stator according to claim 3, it is characterised in that the hair clip includes big hair clip, middle hair clip and bobby pin；The stator coil is per mutually including 2 leading-out terminals formed by the hair clip, 2 neutral points formed by the hair clip, 12 spans are the freedom that the free end of 6 slot pitches is located at first layer and the 4th layer of big hair clip respectively and 12 spans are 6 slot pitches End is located at third layer and first layer respectively positioned at the second layer and the bobby pin of third layer, 2 spans for the free end of 6 slot pitches respectively Middle hair clip.
- 5. stator according to claim 3, it is characterised in that in stator coil end described in the placement of the connecting portion axial direction The outside in portion is simultaneously axially projecting, and is not protruded partially radially from end turn substantially.
- 6. stator according to claim 1, it is characterised in that the hair clip is formed as U-shaped or V-arrangement, has a pair along length The head being bent to form that the freedom portion of degree direction extension is connected with the freedom portion, the hairpin are formed as linear, including One line part and the bending section being connected with the line part.
- 7. stator according to claim 6, it is characterised in that the hair clip and hairpin are that copper, aluminium or copper aluminium mix by material Electric conductor made of any material in compound is formed.
- 8. stator according to claim 6, it is characterised in that the A/F of the stator slot is less than or equal to 1.5mm.
- 9. stator according to claim 6, it is characterised in that the core size of the hair clip and hairpin and the chi of stator slot It is very little to meet following relation：Core body length≤(stator slot length -1.4mm)/4；Core body width≤stator well width -0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710855518.7A CN107492959A (en) | 2017-09-20 | 2017-09-20 | A kind of stator of new winding electric machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855518.7A CN107492959A (en) | 2017-09-20 | 2017-09-20 | A kind of stator of new winding electric machine |
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| CN107492959A true CN107492959A (en) | 2017-12-19 |
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| CN201710855518.7A Pending CN107492959A (en) | 2017-09-20 | 2017-09-20 | A kind of stator of new winding electric machine |
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| CN110048563A (en) * | 2018-01-15 | 2019-07-23 | 本田技研工业株式会社 | Holding meanss, keeping method and the insertion method of wave-wound coil |
| CN110611387A (en) * | 2019-11-07 | 2019-12-24 | 重庆宗申电动力科技有限公司 | Phase winding, stator 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 |
| WO2021065298A1 (en) * | 2019-09-30 | 2021-04-08 | 日本電産株式会社 | Stator and motor |
| WO2021065297A1 (en) * | 2019-09-30 | 2021-04-08 | 日本電産株式会社 | Stator and motor |
| US11489393B2 (en) * | 2019-01-04 | 2022-11-01 | Hyundai Mobis Co., Ltd. | Stator assembly of hairpin winding motor |
| EP4035255A4 (en) * | 2019-09-23 | 2023-10-11 | Canoo Technologies Inc. | Fractional slot electric motors with coil elements having rectangular cross-sections |
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| 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 |
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| WO2021065298A1 (en) * | 2019-09-30 | 2021-04-08 | 日本電産株式会社 | Stator and motor |
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| JP7468539B2 (en) | 2019-09-30 | 2024-04-16 | ニデック株式会社 | Stator and Motor |
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| CN110611387A (en) * | 2019-11-07 | 2019-12-24 | 重庆宗申电动力科技有限公司 | Phase winding, stator and motor |
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Application publication date: 20171219 |