CN205986365U - Three -phase motor stator - Google Patents

Abstract

The utility model discloses a three -phase motor stator, including annular stator core and install the stator coil on stator core, the stator core inner wall has a plurality of slots, does stator coil convolute into 2 circles including multiple coils unit, every coil section by an enameled wire 8 the circle, more than two coil section establish ties to constitute a phase winding, lies in to connect through the direct electricity of first wiring end between two coil section that stator core went up same circumference position, lie in second wiring that stator core went up two the mutually staggered coil section in circumference position hold between through being connected with the parallel connecting wire of stator core terminal surface. The utility model discloses a scheme of compromise, through structure and the connected mode that changes stator coil, under the prerequisite that stator axially highly was not markedly increased, adapt to integral (week upwards for whole) stator core, avoid the too high technology degree of difficulty to make the manufacturing cost increase.

Description

Three-phase motor stator

Present patent application is：

Entitled：Three-phase motor stator and motor

Application No.：2016206023444

The applying date is：2016.06.17

Patent application divisional application.

Technical field

This utility model belongs to electric machine structure field and in particular to being used for the stator structure of the three phase electric machine of electric vehicle.

Background technology

Document number is that the Chinese patent application of CN103534902A discloses a kind of stator of electric rotating machine, in conjunction with the document In Fig. 3-Fig. 8 shown in, each wire 50 constituting stator winding 40 is by having multiple slot incorporating sections 51 and multiple rotating part 52 Continuous conductors constitute, the length of one is about 3m, and wherein, multiple slot incorporating sections 51 are linearly prolonged in parallel to each other Stretch and the length direction along wire arranges at predetermined intervals, adjacent slot incorporating section 51 is being inserted by multiple rotating parts 52 each other One side of groove incorporating section 51 is alternately connected with another side.Thus, as shown in figure 5, stator winding 40 has：Led by multiple The slot incorporating section 51 of line 50 axial central part along stator core 30 radially superimposed slot incorporating section laminated section 46, With in axial both sides from the axial both ends of the surface of stator core 30 towards the rotating part of the axially external multiple wires 50 projecting respectively 52 along radially superimposed first of stator core 30 and the second end turn 47,48.

In addition, the rotating part 52 of wire 50 has a pair of sector 56, their end face 30A with the axial direction of stator core 30 Extend substantially in parallel and adjacent respectively with a pair of the slot incorporating section 51 being connected by this rotating part 52.Thus, rotating part 52 The height h1 projecting from the end face 30A of stator core 30 reduces.As a result, the height of the first and second end turn 47,48 H1 reduces.

This patent effectively reduces stator height in the axial direction so that the whole height of motor can by such scheme It is made less, when this motor is used on electric vehicle, the installing space of motor can be effectively reduced.

Because said stator winding 40 has multiple slot incorporating sections 51 being connected as a single entity and multiple rotating part 52, so, It is impossible to be installed to it on all-in-one-piece stator core after stator winding sizing.In order to overcome the problems referred to above, should In document（As shown in Figure 3 and 4）, by by multiple iron core sectors 32 connecting by way of mutually adjacent in the circumferential and Form stator core 30.In addition, stator core 30 has multiple slots 31, the footpath that this slot 31 is formed at stator core 30 is inside Side face simultaneously circumferentially configures at predetermined intervals.However, circumferentially the processing of the sector of sectional type, assembling all more bother, And it is difficult to ensure that the stability in the large after multiple sector assemblings.

Utility model content

Technical problem to be solved in the utility model is：In view of the shortcomings of the prior art, provide a kind of technique relatively For simple, easy to assembly and can guarantee that stator shaft orientation has the three-phase motor stator compared with low height and the electricity using this stator Machine.

For realizing the purpose of this utility model, employ the following technical solutions and be achieved：A kind of three-phase motor stator, including There is the stator core of annular and be arranged on the stator coil on stator core；

Described stator core inwall have multiple along the circumferentially equidistant arrangement of stator core in order to accommodate described stator coil Slot, the opening of each slot is towards the center of stator core；

Described stator core is made up of multiple magnetic links axially stacked along stator core；

Described stator coil includes multiple coil units, and each coil unit is wound into along stator ferrum by an enamel-covered wire Radially superimposed 2 circle -8 circle of core；

Plural described coil units in series constitutes a phase winding, same circumferential position on stator core Directly electrically connected by the first terminals between two coil units, two lines that circumference is staggeredly located out on stator core It is connected by the connecting line parallel with stator core end face between second terminals of coil unit.

The global shape of the coil unit after coiling and molding is：There is two slot receiving portions being parallel to each other, Yi Jiwei The turning part of two symmetrical shape between two slot receiving portions；

Described turning part has two hypotenuse portions, and the two ends of coil unit are respectively described the first terminals and second and connect Line end, described first terminals are protruding along the direction parallel with slot receiving portion from two hypotenuse portions centre position, the Two terminals are protruding along slot receiving portion length direction.

In order that the whole height of stator is less, and avoid using the stator ferrum being spliced by sector in background technology Core, this utility model, using the scheme of compromise, by changing construction and the connected mode of stator coil, does not highly have in stator shaft orientation On the premise of being significantly increased, adapt to monoblock type（It is overall in the circumferential）Stator core, it is to avoid too high technology difficulty makes Manufacturing cost increases.

Specifically, each coil unit of the present utility model has multiturn, forms one after the series connection of less number of times Individual phase winding, so each coil unit can effortlessly be installed to the correspondence position on stator core, in all coils unit After installing, by each coil unit by way of the line that is directly connected to be connected connects, form final stator line Circle.

Wherein, between for two coil units that cannot directly weld, using the connection parallel with stator core end face Line is connected, and so compared to the scheme of background technology, the height that stator increased in the axial direction is about the thickness of described connecting line, But avoid using split type stator core, eliminate manufacture, assembly, this more complicated technique stream of fixed stator iron core Journey, and can guarantee that stability in the large and the mechanical strength of stator.

Preferably：The projection of shape of the turning part relative stator iron core end face of described coil unit is：With stator Curved portions a of iron core concentric and curved portions b, the radius of described curved portions b is more than the radius of curved portions a；Described curved portions a and Form a turning point, the effective length of described turning point relative stator iron core radial direction is equal to coil unit between curved portions b Number of turn N is multiplied by the thickness of enamel-covered wire, and described number of turn N is defined as：As long as when the number of turn that enamel-covered wire bypasses is enclosed more than N-1, being all designated as N Circle.

Preferably：Two slot receiving portions of each described coil unit are assemblied in M and the M+6 slot In.

Brief description

Fig. 1 is the structural representation of this utility model motor stator.

Fig. 2 is the structural representation of assembling outside line coil unit.

Fig. 3 is the structural representation of assembling interior lines coil unit.

Fig. 4 is the structural representation of this utility model each outside line coil unit.

Fig. 5 is the structural representation of outside line coil unit.

Fig. 6 is the end construction schematic diagram of outside line coil unit.

Fig. 7 is the structural representation of this utility model each interior lines coil unit.

Fig. 8 is the structural representation of the first connecting line.

Fig. 9 is the structural representation of the second connecting line.

Figure 10, Figure 12 are the attachment structure schematic diagrams of continuously arranged multiple coil unit.

Figure 11 is the A portion schematic enlarged-scale view of Figure 10.

Figure 13 is the B portion schematic enlarged-scale view of Figure 12.

Figure 14 is the structural representation of two winding elements of series connection.

Figure 15 is the arrangement architecture schematic diagram of 8 winding elements.

Figure 16 is winding connection figure of the present utility model.

1st, stator core；11st, slot；2nd, the neutral conductor；3rd, phase line；4th, outside line coil unit；41st, exterior loop a；42nd, exterior loop b；43rd, exterior loop c；44th, exterior loop d；45th, exterior loop e；401st, slot receiving portion；402nd, turning part；403rd, turning point；404、 First terminals；405th, the second terminals；5th, interior lines coil unit；51st, the first interior loop；52nd, the second interior loop；53rd, in the 3rd Coil；6th, the first connecting line；7th, the second connecting line；71st, the first curved portions, 72, avoid bending part；73rd, the second curved portions.

Specific embodiment

Below according to accompanying drawing, specific embodiment of the present utility model is made a detailed explanation.

Embodiment 1

In conjunction with shown in Fig. 1 to Figure 16, the three-phase motor stator of the present embodiment includes the stator core 1 of annular and installs Stator coil on stator core.

Described stator core inwall have multiple along the circumferentially equidistant arrangement of stator core in order to accommodate described stator coil Slot 11, the opening of each slot is towards the center of stator core.

Described stator core is made up of multiple magnetic links axially stacked along stator core.

In conjunction with shown in Fig. 5, described stator coil includes multiple coil units, and each coil unit is by an enamel-cover coil of wire It is coiled into along the radially superimposed 2+3/4 circle of stator core.

The global shape of the coil unit after coiling and molding is：There are two slot receiving portions 401 being parallel to each other, and The turning part 402 of two symmetrical shape between two slot receiving portions.

With plane residing for two slot receiving portions for reference projection face, described turning part 402 has and is in isosceles three Two hypotenuse portions on the symmetrical hypotenuse of angular two, the two ends of coil unit are respectively the first terminals 404 and the second wiring End 405, described first terminals are protruding along the direction parallel with slot receiving portion from two hypotenuse portions centre position, the Two terminals are protruding along slot receiving portion length direction.

The projection of shape of the turning part relative stator iron core end face of described coil unit is：Arc with stator core concentric Shape portion a4001 and curved portions b4002, the radius of described curved portions b is more than the radius of curved portions a；Described curved portions a and curved portions Form a turning point 403, the effective length of described turning point relative stator iron core radial direction is equal to the number of turn of coil unit between b N is multiplied by the thickness of enamel-covered wire, and described number of turn N is defined as：As long as when the number of turn that enamel-covered wire bypasses is enclosed more than N-1, being all designated as N circle. The present embodiment center line coil unit is 2+3/4 circle, then be designated as 3 circles.

Form 105 °～110 ° of angle between two hypotenuse portions of described coil unit turning part.

Two slot receiving portions of each described coil unit are assemblied in M and the M+6 slot.

In conjunction with shown in Fig. 2 and Fig. 3, described coil unit is divided into close according to the interior external position of its relative stator iron core radial direction The outside line coil unit 4 of stator core radial outside, and the interior lines coil unit 5 near stator core radially inner side；Described outside line Coil unit, interior lines coil unit are sequentially arranged in each slot respectively along stator core circumference.

Second terminal ends of described outside line coil unit form the transverse weld portion parallel with stator core end face.Horizontal It is easy to the positioning of phase line, the neutral conductor to weld part, simultaneously facilitate positioning and the connection of the second connecting line.

Described outside line coil unit includes exterior loop a, exterior loop b, exterior loop c, exterior loop d and exterior loop e, any of the above outer Coil unit except second terminals length difference in addition to, other parts structure all same, according to the second terminals length from It is followed successively by little greatly：Exterior loop a ＞ exterior loop e ＞ exterior loop d ＞ exterior loop c ＞ exterior loop b.

Outside line coil unit is attached first on stator core, and the slot on stator core totally 48, according to following during installation Each outside line coil unit is loaded by order along clockwise direction：Exterior loop a～exterior loop b～exterior loop e～exterior loop a～outside line Circle b～exterior loop a～exterior loop d～exterior loop a～exterior loop b～exterior loop a～exterior loop c～exterior loop a～exterior loop b～ Exterior loop a～exterior loop e ..., is recycled to all slots filling up whole stator core successively, is loading last 5 exterior loop During unit, need to start the slot receiving portion on the left of 5 outside line coil units foremost, after loading all outside line coil units Flattened with frock.

Described interior lines coil unit includes the first interior loop 51, the second interior loop 52 and the 3rd interior loop 53, any of the above , in addition to the second terminals length difference, other parts structure all same, according to the length of the second terminals for outside line coil unit It is followed successively by from big to small：First interior loop, 51 ＞ the second interior loop 52 ＞ the 3rd interior loop 53.

Then interior lines coil unit is installed, in the following order along clockwise direction by each interior lines coil unit dress during installation Enter：First interior loop～the second interior loop～the first interior loop～the second interior loop～the first interior loop～the three interior loop～the One interior loop～the 3rd interior loop～the first interior loop～the second interior loop ... is recycled to successively and fills up whole stator core All slots.

It is then used by the first connecting line to be attached corresponding interior lines coil unit.

In conjunction with the phase winding shown in Figure 14, being two series connection, four coil units positioned at right side constitute a phase winding, Four coil units positioned at left side constitute another phase winding, and the phase winding end on right side is connected with a phase line, left side Phase winding is connected with the neutral conductor, passes through first connecting line 6 and be connected between two phase windings.In the phase winding on right side, one Second terminals of individual interior lines coil unit pass through the second connecting line 7 with the second terminals of an outside line coil unit of adjacent position It is connected.

Include 8 in conjunction with the phase winding shown in Figure 15 and Figure 16, being connected with same phase line, often connect and be for adjacent two One group, along totally 4 groups of stator core axis.The coil unit of other two phase places also according to same layout along stator core week To arrangement.

The mid portion of described first connecting line of U-shaped is in circular circular arc, the first connecting line institute with stator core Place plane parallel with stator core end face, and the both ends of described first connecting line form perpendicular with stator core end face Longitudinal measure portion.

Described second connecting line has the first curved portions and the second curved portions with stator core concentric, and the second arc The radius in portion is more than the radius of the first curved portions, is formed for avoiding adjacent position the between the first curved portions and the second curved portions First curved portions of two connecting lines, the avoidance bending part of the second curved portions；The outer end of the first curved portions forms and stator core The perpendicular longitudinal measure portion of end face, the outer end of the second curved portions forms the transverse weld portion parallel with stator core end face. Make the first curved portions of the second connecting line of adjacent position, the second curved portions will not produce interference using avoidance bending part, and Molding beneficial to two ends weld part.

Mutual along the position of the two neighboring described first connecting line relative stator iron core axis direction of stator core circumference Stagger, the first connecting line is also mutually staggered with the position of the second connecting line relative stator iron core axis direction；And described second even Wiring is relative to the first connecting line away from stator core end face.

The distance of the turning point 403 relative stator iron core end face of described coil unit be 25mm, described first terminals away from It is 30mm with a distance from stator core end face.

First connecting line, the second connecting line layering setting, are also so separately to carry out in welding, reduce welding difficulty, And every layer of solder joint is all uniformly distributed, it is avoided that wiring malfunctions.It is many that second connecting line compares the first connecting line quantity, and second Connecting line extends to the inner circumferential of stator coil from the most peripheral of stator coil, and so most weld, in outermost, welds It is the most convenient to connect, also so that the stator coil monnolithic case after connecting is smooth attractive in appearance.

In conjunction with shown in Figure 10 to Figure 13, when each coil unit is attached, first by the 3rd interior lines of correspondence position Circle 53 uses the first connecting line to connect, and is then attached the second interior loop 52 of correspondence position using the first connecting line 6, connects And exterior loop a of the first interior loop 51 of correspondence position and correspondence position is attached using the second connecting line 7.

The distance between first connecting line and first terminals, first connecting line on the second connecting line and upper strata, adjacent two The distance between layer first connecting line is 2-4mm.

In conjunction with shown in Fig. 1 to Fig. 3, described phase line and the neutral conductor are located at periphery, described phase line and the neutrality of outside line coil unit Line is in integrally the circular arc with stator core concentric.Second terminals of exterior loop b connect the neutral conductor 2, exterior loop c, outside line Circle d, exterior loop e connect three phase lines 3 respectively.

The distance of the neutral conductor and stator core end face is 10mm, near between the phase line of the neutral conductor and the neutral conductor, and The distance between two neighboring neutral conductor is 4-6mm.

This utility model in order that the whole height of stator is less, and avoid using in background technology by sector splice and The stator core becoming, this utility model adopts the scheme of compromise, by changing construction and the connected mode of stator coil, in stator On the premise of axial height is not significantly increased, adapt to monoblock type（It is overall in the circumferential）Stator core, it is to avoid too high Technology difficulty makes manufacturing cost increase.

Specifically, each coil unit of the present utility model has multiturn, forms one after the series connection of less number of times Individual phase winding, so each coil unit can effortlessly be installed to the correspondence position on stator core, in all coils unit After installing, by each coil unit by way of the line that is directly connected to be connected connects, form final stator line Circle.

Wherein, between for two coil units that cannot directly weld, using the connection parallel with stator core end face Line is connected, and so compared to the scheme of background technology, the height that stator increased in the axial direction is about the thickness of described connecting line, But avoid using split type stator core, eliminate manufacture, assembly, this more complicated technique stream of fixed stator iron core Journey, and can guarantee that stability in the large and the mechanical strength of stator.

Embodiment 2

The present embodiment be a kind of three phase electric machine, include the stator described in embodiment 1 and positioned at described stator inner circumferential and with The rotor that stator is coaxially disposed.

Claims (1)

1. a kind of three-phase motor stator it is characterised in that：Include the stator core of annular and be arranged on stator core Stator coil；

Described stator core inwall have multiple along the circumferentially equidistant arrangement of stator core in order to accommodate described stator coil insert Groove, the opening of each slot is towards the center of stator core；

Described stator core is made up of multiple magnetic links axially stacked along stator core；

Described stator coil includes multiple coil units, and each coil unit is wound into along stator core footpath by an enamel-covered wire 2 circle -8 circle to stacking；

Plural described coil units in series constitutes a phase winding, two of same circumferential position on stator core Directly electrically connected by the first terminals between coil unit, two coil lists that circumference is staggeredly located out on stator core It is connected by the connecting line parallel with stator core end face between second terminals of unit；

The global shape of the coil unit after coiling and molding is：There are two slot receiving portions being parallel to each other, and be located at two The turning part of two symmetrical shape between individual slot receiving portion；

Described turning part has two hypotenuse portions, and the two ends of coil unit are respectively the first described terminals and the second wiring End, described first terminals are protruding along the direction parallel with slot receiving portion from two hypotenuse portions centre position, and second Terminals are protruding along slot receiving portion length direction；

The projection of shape of the turning part relative stator iron core end face of described coil unit is：Curved portions with stator core concentric A and curved portions b, the radius of described curved portions b is more than the radius of curved portions a；Form one between described curved portions a and curved portions b Individual turning point, the effective length of described turning point relative stator iron core radial direction is multiplied by enamel-covered wire equal to number of turn N of coil unit Thickness, described number of turn N is defined as：As long as when the number of turn that enamel-covered wire bypasses is enclosed more than N-1, being all designated as N circle；

Two slot receiving portions of each described coil unit are assemblied in M and the M+6 slot.