CN101515733A - Rotating machine, continuous winding coil, distributed winding stator and method for forming same - Google Patents
Rotating machine, continuous winding coil, distributed winding stator and method for forming same Download PDFInfo
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- CN101515733A CN101515733A CNA2008100804271A CN200810080427A CN101515733A CN 101515733 A CN101515733 A CN 101515733A CN A2008100804271 A CNA2008100804271 A CN A2008100804271A CN 200810080427 A CN200810080427 A CN 200810080427A CN 101515733 A CN101515733 A CN 101515733A
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Abstract
The invention relates to a rotating machine, a crank-shaped continuous winding coil, a distributed winding stator, and a method for manufacturing the rotating machine, the crank-shaped continuous winding coil and the distributed winding stator. The subject of the invention is that the small size and high-output rotating machine which has a coil end reduced than the prior rotating machine and realizes reduced current density is obtained when the coil adopts the distributed winding stator in a rectangular conductor. Conductor wires of which the cross section is rectangular are overlapped and wound, top parts at two ends are only deviated from the full width of the overlapped and wound wires, a crank shape is formed by a length in the interval range of adjacent slots, and the crank shape is inserted into a slot of the stator for formation.
Description
Technical field
The present invention relates to continuous winding coil, distributed winding stator and their the formation method of electric rotating machines such as motor or engine, crank shape.
Background technology
The mode of the coiling of stator has concentrating coil winds the line on each magnetic pole tooth concentrated winding and crosses over a plurality of groove coiling coils and in the coil distributed winding each other of overlapping out-phase of end winding or homophase.Concentrate the stator of winding can reduce end winding, effective aspect the miniaturization of electric rotating machine, high efficiency.On the other hand, the stator of distributed winding can make the rotating magnetic field in week in the stator near sinusoidal wave, than concentrated winding power output height and can reduce noise.In addition, both are shared, as a kind of method that reaches high outputization, have the wire rod copper cash of coil to use the line of square-section, thereby improve the method for the coil space factor in the stator slot.The present invention with the electric rotating machine of distributed winding that stator coil is constituted with the line of square-section as object.
Following technical scheme is disclosed in the patent documentation 1 (Japanese kokai publication hei 4-168955 communique), with the rectangular conductor of straight angle shape with the mode brake forming relative of the face of long side with the face radially of stator slot, and with it in the axial end insertion groove of stator core, will be electrically connected from the open end of the outstanding rectangular conductor sheet of the opposition side end face of stator core and form the structure of the circuit of waveform winding.This rectangular conductor has roughly U word shape, and the face of the short brink in straight angle cross section is identical direction.
In addition, in patent documentation 2 (Japanese kokai publication hei 6-284651 communique), put down in writing and will measure-alike or approaching in length and breadth rectangular conductor to have tied up 4 and the technical scheme used.The conductor of tying up 4 has roughly pine needle shape, and the face of the conductor relative with the face radially of groove is identical direction.
In addition, in patent documentation 3 (Japanese kokai publication hei 8-298756 communique), put down in writing following technical scheme, it is the coil that is called as " form-wound coil " that is used for medium-and-large-sized electric rotating machine, the rectangular wire that will have self-adhesive layer is wound into ellipse, make all solidify after with the end winding torsional deflection, generate the non-interferometric shape of end winding.Each conductor that constitutes coil reaches end winding and arranges with equidirectional in groove, become the state of mutual fastening driving fit.
Also have, in patent documentation 4 (Japanese kokai publication hei 10-66314 communique), put down in writing and rectangular conductor is reeled repeatedly and formed the stator winding of the coiled wire-wound coil of coiled type in the distributed winding coil mode in the mode insertion groove of crossing over the regulation groove.
In these prior aries, in the distributed winding stator, use the coiling of the rectangular conductor of straight angle shape, radially disposing at the stator slot inner wire with the little number of cutting apart, and use the coiling of measure-alike or approaching in length and breadth rectangular conductor, constitute the outstanding structure of head of the conductor that forms end winding.
Problem to be solved by this invention is, in the distributed winding stator, invents out the shape and the forming method thereof of the coil of the electric rotating machine that is used for accomplished high output and miniaturization, high efficiency.
About height outputization because according to the groove number and the shape of stator core, occupy the output that conductor occupied area in the groove roughly determines electric rotating machine, so the high occupation efficiency of the conductor in the groove becomes problem.
About miniaturization, the size of distributed winding stator is because the size of stator core is fixing, and the end winding that therefore reduces the stator core two ends becomes the problem of the miniaturization of electric rotating machine.Patent documentation 2 disclosed conductors are to tie up 4 sectional coil (cutting apart coil) type, owing to will become the pine needle shape as 4 rectangular conductor general curved of coil wire rod, and be to open before and after the fulcrum with the head of bending, therefore the height of the part suitable with the overall with of the conductor of tying up becomes needed bottom line.In addition, patent documentation 3 disclosed conductors are the oval-shaped form-wound coil types with the overlapping coiling of rectangular wire, because with the head at the two ends of bending is to open before and after the fulcrum, therefore the height of the part suitable with straight angle line length limit becomes needed bottom line.Restudy the bending and molding method of these conductors, the molded coil type of the head that has been reduced becomes problem.
About high efficiency, can enumerate the reduction of current density and the reduction of copper loss.Patent documentation 1 disclosed conductor is the sectional coil type that the rectangular wire general curved is become the U word shape, is the structure that radially disposes 2 conductors in a groove.Make the conductor that is configured in the groove and realize that radially segmenting the structure that cuts the reduction of current density becomes problem.
In addition, patent documentation 2 disclosed conductors owing to be to have tied up 4 sectional coil, therefore constitute the structure that waits 4 terminal lines that connect a side with welding.Make to have reduced to connect and count and realize that the reduction of copper loss becomes problem.
Summary of the invention
In order to solve above-described three problems, the shape of coil and forming method thereof are important, the object of the invention is to obtain a kind of shape and forming method thereof of coil, to be used for obtaining the high electric rotating machine of exporting and realizing miniaturization, high efficiency at the distributed winding stator.
Electric rotating machine of the present invention; possessing the rectangular conductor with insulating protective film reels and to form repeatedly that spiral helicine coiled wire-wound coil is contained in the groove of stator core and the multi phase stator coiling that constitutes; it is characterized in that above-mentioned coiled wire-wound coil is not formed with crank shape portion in the roughly head at two ends with twisting.
According to the present invention, in the stator of the distributed winding of the coil of the conductor that has used overlapping coiling square-section, end winding is than little with contact, and radially cuts apart the configuration conductor in groove.Thus, the advantage of the good distributed winding stator of revolving property can be effectively utilized, and miniaturization, the high efficiency of the electric rotating machine of high output can be realized.
Description of drawings
Fig. 1 is the key diagram of the form-wound coil of embodiments of the invention 1.
Fig. 2 is the key diagram of the distributed winding stator of embodiments of the invention 1.
Fig. 3 is the key diagram of the continuous reeling operation in the forming process of form-wound coil of embodiments of the invention 1.
Fig. 4 is the coiled wire-wound coil in the forming process of embodiments of the invention 1 and the stereogram of form-wound coil.
Fig. 5 be embodiments of the invention 1 be formed into the key diagram of the deformation process of form-wound coil from coiled wire-wound coil.
Fig. 6 is the stereogram that the form-wound coil with embodiments of the invention 1 is encased in the state in the groove of stator.
Fig. 7 is the stereogram that the form-wound coil with embodiments of the invention 1 is encased in the state in the groove of stator.
Fig. 8 is the key diagram of the shape of the interior form-wound coil of the groove that is encased in stator of embodiments of the invention 1.
Fig. 9 is the vertical view of seeing from the terminal part side that the form-wound coil with embodiments of the invention 1 is encased in state in the groove of stator.
Figure 10 is the stereogram of packing into the form-wound coil of embodiments of the invention 1 in the stator and having connected the state of terminal part.
Figure 11 is the vertical view that the distributed winding stator of embodiments of the invention 1 is seen from the terminal part side.
Figure 12 is the interior cutaway view of groove of the distributed winding stator of embodiments of the invention 2.
Among the figure:
The 1-linea angulata, 2-stator core, 3-stator slot, the 4-coiled wire-wound coil, 5-form-wound coil, 6-insulating trip, the 7-lead division, 8-distributed winding stator, 11-terminal part, the 12-head, 13-terminal part side head, 30-bobbin, the tapered portion of 31-bobbin, the 32-counterdie, 33a, 33b-side mould, 34a, 34b-patrix.
Embodiment
Below, use accompanying drawing that embodiments of the present invention are described.
Embodiment 1
Fig. 1 represents the structure of the form-wound coil type of embodiments of the invention 1.Fig. 1 (A) is with pack into stereogram before the stator core 2 of form-wound coil 5, stator core 2 cutting expressions.Fig. 1 (B) is a stereogram of representing form-wound coil 5 is encased in the state of stator core 2, represents the profile of stator core 2 with solid line and double dot dash line.Coil wire rod 1 is the linea angulata made of copper with the film coating of enamel-cover resin.Stator core 2 carries out die cut and stacked and constitute with the rolled plate of the about 1mm of thickness.The coil wire rod 1 of the linea angulata of the size that the length on continuous reeling both sides is identical or approaching (in the drawings 3 circle) is that head 13 brake formings of head 12 and end winding side are that crank shape forms form-wound coil with the face of the edgewise of the coil wire rod 1 of overlapping coiling.Form-wound coil 5 is inserted the stator slot 3 from the inboard of stator core 2.
Fig. 2 represents pack into the figure of state of stator core 2 of the molded coil 5 of embodiments of the invention 1.Electric rotating machine of the present invention is the three-phase coil of U phase, V phase, W phase, comprises that each 24 of phase promptly adds up to 72 form-wound coil 5 and corresponding therewith several 72 stator core 2 of groove.Fig. 2 (A) is illustrated in the vertical view of the distributed winding stator of seeing from 12 sides of head 8 of the state of the form-wound coil 5 of packing in the stator core 2.Form-wound coil 5 is not limited to the insertion position of groove, all is of similar shape, and for all form-wound coils 5 of can packing into, head 2 has crank shape.In the explanation of Figure 10 and Figure 11, will narrate,, form the three-phase coil of U phase, V phase, W phase, obtain distributed winding stator 8 for the end of the end of the coil wire rod 1 coil wire rod 1 by being welded to connect homophase.
Fig. 2 (B) expression is encased in form-wound coil 5 the local amplification view of the stator slot 3 under the state of stator core 2.If the total cross-sectional area of the coil wire rod 1 in the stator slot 3 is identical, then the many more magnetic flux densities of radical are high more.Coil wire rod 1 is a linea angulata in the present invention, is the structure of two group of 3 circle of axial arrangement in the stator slot 3 of stator core 2, forms the structure of 6 linea angulata conductors of axial arrangement in a groove.Thus, compared with 2 rectangular wire conductors of axial arrangement in a groove, 6 of linea angulata conductor arrangement more can improve magnetic flux density, and its current density reduces, and can improve the efficient as electric rotating machine.
Use Fig. 3 to Fig. 5 that the forming method of form-wound coil of the present invention is described.
Fig. 3 represents the operation with coil winding machine continuous reeling linea angulata 1.Fig. 3 (A) expression is fixed on linea angulata 1 stereogram of the state on the bobbin.Fig. 3 (B) is illustrated in the stereogram of the state of the linea angulata 1 of having reeled on the bobbin 30.Fig. 3 (C) expression is from the stereogram of bobbin 30 dismounting coiled wire-wound coils 4.
At first, shown in Fig. 3 (A), linea angulata 1 is fixed on the bobbin 30 with the tapered portion 31 that has the regulation tapering.Then as Fig. 3 (B) thus around bobbin 30 linea angulata 1 is wound on the bobbin 30 when the diagonal that is shown in 1 gives pulling force, after the number of turns of regulation of reeling (3 circles in the present invention), the linea angulata 1 of continuous reeling is dismantled from bobbin 30, obtained the coiled wire-wound coil 4 of the tapering of the tapered portion of having duplicated bobbin 31 shown in Fig. 3 (C).
In the present invention, at the required tapering of the stage of coiled wire-wound coil 4 shaping mould coiling 5.The groove number of stator core of the present invention is 72, and the groove of putting into a form-wound coil spreads all over 7.Thus, the angle that enters in the groove of form-wound coil is that 7/72nds of 360 degree are 35 degree.Therefore, the tapering of the tapered portion 31 of bobbin 30 is half 17.5 degree of the above-mentioned angle of obtaining.When tapering is big on the wire rod of the core outer circumferential side of form-wound coil additional compression stress, additional tensile stress on the wire rod of in-core week side.And, at tapering hour additional tensile stress on the wire rod of the core outer circumferential side of form-wound coil, additional compression stress on the wire rod of in-core week side.The occasion of additional compression stress produces buckling distortion in order to relax it on wire rod, and it is big that the size of form-wound coil might become.On the other hand, the occasion of additional tensile stress on wire rod since not the stress that causes because of distortion relax, so therefore additional tensile stress on wire rod always is according to the long-term running environment of electric rotating machine, the danger that also exists wire rod to break.The scope of the tapering of the tapered portion 31 in the embodiments of the invention 1 is that 15 degree to 20 degree are advisable.
Fig. 4 is the comparison diagram of the summary shape of coiled wire-wound coil 4 and the form-wound coil 5 that is shaped to the shape in the groove that inserts stator.Form-wound coil 5 is shaped to the shape of the stator core 2 of packing into like that shown in Fig. 2 (A).For this reason, head 12 and terminal part side head 13 need be bent to crank shape and shaping mould coiling 5 at the face of the edgewise of winding wire material 1.
Fig. 5 be with expression be formed into from coiled wire-wound coil 4 form-wound coil 5 deformation process see the vertical view of mould and coiled wire-wound coil 4 or form-wound coil 5 from head 12 sides.Fig. 5 (A) expression is fixed on state on the counterdie 32 with coiled wire-wound coil 4, state in the way of Fig. 5 (B) expression descending profile mould 33a, 33b, patrix 34a, 34b, Fig. 5 (C) expression drops to side mould 33a, 33b, patrix 34a, 34b the state of assigned position.
Counterdie 32, side mould 33a, 33b, patrix 34a, 34b be steel and improved the superhard mould of hardness by modifier treatment, and the damage for the enamel-cover diaphragm that prevents to cause owing to moulding has applied mirror finish on the face of winding wire material 1 contact.After Fig. 5 (C) be shown in is fixed on coiled wire-wound coil 4 on the counterdie 32, make side mould 33a, 33b, patrix 34a, 34b drop to assigned position and shaping mould coiling 5 as Fig. 5 (A).
Fig. 6 represents the stereogram of the state in the stator slot of stator core 2 that form-wound coil 5 is encased in.For convenience of explanation, the radical of expression form-wound coil 5 is 9 a situation.At first, use the line part of the insulating trip 6 coverings form-wound coil 5 suitable with the position in the stator slot that inserts stator core 2.Cover the effect that prevents of the enamel-cover diaphragm damage when holding a concurrent post the insulation countermeasure of the pin hole that the contingency with respect to the enamel-cover diaphragm that covers coil wire rod 1 exists and packing stator core into insulating trip 6.
Then, in the interior side direction stator slot of stator core 20, insert the form-wound coil 5 that insulating trip 6 has been installed successively.
Fig. 7 represents the vertical view of seeing from head 12 sides of state in the stator slot 3 of stator core 2 that form-wound coil 5 is encased in.For convenience of explanation, the number of expression form-wound coil 5 is 9 a situation.Electric rotating machine of the present invention is a three-phase coil, is made of the coil of U phase, V phase, W phase.The indicia distribution of the U that this figure put down in writing, V, W is represented U phase, V phase, W phase, and continuous numeral is assigned to the number of the form-wound coil 5 of each phase.Identical shaped form-wound coil 5 is with the arranged in order of U1, V1, W1, U2, V2, W2..., and the stator core 2 of packing into.The number of the form-wound coil 5 of the reality among the present invention is each 24 mutually, adds up to 72, as pack into 72 form-wound coil 5 of Fig. 2 (A) stator core that is shown in 2.
Fig. 8 represents the vertical view of seeing from 12 sides of head of state in the stator slot 3 of stator core 2 that three form-wound coils are encased in.For convenience of explanation, only the form-wound coil 5 usefulness sections of middle are represented position in the stator slot 3.In addition, stator core 2 usefulness double dot dash lines are represented.Head 12 is formed crank shape in the mode of the width dimensions B1 that only is offset form-wound coil 5 in the scope of the interval B2 of the stator slot 3 of adjacency.Thus, realize that identical shaped form-wound coil 5 packs in each stator slot 3 of stator core 2.
Suppose the also big and shaping mould coiling 5 of deviation ratio width dimensions B1, then the overall dimensions B3 of form-wound coil 5 becomes big, and form-wound coil 5 can not enter in the stator slot 3 of regulation.And, the shaping mould coiling 5 if deviation ratio width dimensions B1 is also little, then the overall dimensions B3 of form-wound coil 5 diminishes, and this can not make form-wound coil 5 enter in the stator slot 3 of regulation.On the other hand, the head 12 of form-wound coil 5 is shaped to the occasion of crank shape outside the scope of the interval of stator slot 3 B2, a plurality of form-wound coils 5 contact with each other, and can not enter in the stator slot 3.
Fig. 9 represents the vertical view of seeing from terminal part side head 13 sides of state in the stator slot 3 of stator core 2 that form-wound coil 5 is encased in.For convenience of explanation, the number of expression form-wound coil 5 is 9 a situation.Be illustrated in terminal part 11 U phase, V phase, W go up the number of the form-wound coil 5 that distributes mutually in Fig. 7.Terminal part 11 U1 in identical stator slot is connected with U3, and V1 and V3 also have in adjacent stator slot W1 and W3 in abutting connection with configuration in abutting connection with configuration in adjacent stator slot.The shape of the form-wound coil 5 by constituting the homophase of in identical groove, having packed into like this.
Figure 10 represents pack into stator core 2 and connected the stereogram of the state of terminal part 11 of form-wound coil 5.For convenience of explanation, the radical of expression form-wound coil 5 is 9 a situation.In addition, endways portion 11 be illustrated in U phase, V phase, W phase each go up the number of the form-wound coil 5 that in Fig. 7, distributes mutually.The U1 of terminal part 11 is connected by welding with U3, forms the coil of continuous U phase.And V1 also is connected by welding with V3, forms the coil of continuous V phase.And W1 also is connected by welding with W3, forms the coil of continuous W phase.
Figure 11 represents pack into stator core 2 and connected the vertical view of seeing from terminal part 11 sides of the state of terminal part 11 of form-wound coil 5.Only U has been marked mutually and be distributed into 1 to 24 form-wound coil 5 numbers.And, mutually marked the number that is distributed into 1 and 23 form-wound coil 5 mutually for V with W.The U1 of terminal part 11 is connected by welding with U3, forms the coil of continuous U phase.
The U1 of terminal part 11 is connected by welding with U3, with the order pitch of the laps of U2 and U4, U3 and U5, is connected by welding with U2 with U1, U24 until U23 then, forms the coil of continuous U phase.Though not shown, V reaches mutually pitch of the laps and connect by welding too of W mutually.Also have, the U23 of portion 11 goes up by welding and connects lead-out wire 7 made of copper endways.And, on V23, W23, connect lead-out wire 7 by welding too, obtaining distributing on mutually at U phase, V phase, W has connected the distributed winding stator 8 of lead-out wire 7.
Figure 12 represents that the linea angulata 1 to have applied hot glue 14 of embodiments of the invention 2 forms form-wound coil, and it is encased in the partial sectional view of the stator slot 3 under the state in the stator core 2.2 linea angulatas 1 are bonding and make roughly linea angulata, form form-wound coil.Hot glue 14 is by the fusion with the temperature heating of regulation.2 linea angulatas 1 that superpose by imposing heating and cooling, can carry out bonding.Thus, form the structure that in a groove, has disposed 12 linea angulatas 1.Thereby further improve magnetic flux density, current density reduces, and can improve the efficient as electric rotating machine.
Claims (8)
1. electric rotating machine possesses the rectangular conductor with insulating protective film and reels and form repeatedly that spiral helicine coiled wire-wound coil is contained in the groove of stator core and the multi phase stator coiling that constitutes is characterized in that,
Above-mentioned coiled wire-wound coil is not formed with crank shape portion in the roughly head at two ends with twisting.
2. electric rotating machine according to claim 1 is characterized in that,
The crank shape portion of above-mentioned coiled wire-wound coil is formed on the face of edgewise of rectangular conductor, and this rectangular conductor is to reel by the above-mentioned rectangular conductor that constitutes this coiled wire-wound coil repeatedly to form.
3. electric rotating machine according to claim 1 and 2 is characterized in that,
The crank shape portion of above-mentioned coiled wire-wound coil only be offset the above-mentioned rectangular conductor that constitutes this coiled wire-wound coil orientation width dimensions and form.
4. according to each described electric rotating machine in the claim 1～3, it is characterized in that,
The crank shape portion of above-mentioned coiled wire-wound coil forms in than the also little scope in the interval of the groove that is formed at the adjacency on the stator.
5. the continuous winding coil of a crank shape is characterized in that,
Possess: the cross section with insulating protective film is the two sides of the overlapping lead corresponding with rectangular shape of the lead of rectangular shape and reels repeatedly, form the wide format of the width dimensions corresponding with a plurality of leads on above-mentioned overlapping lateral vertical ground, and the coiled wire-wound coil that forms abreast of the part of above-mentioned wide format;
On both sides the identical direction of above-mentioned coiled wire-wound coil with parallel direction wide format, the terminal part at the two ends of the above-mentioned coiled wire-wound coil that on straight line, prolongs abreast; And,
Roughly head at the two ends of above-mentioned coiled wire-wound coil, distortion ground only is offset the position of width dimensions of wide format and the crank shape that forms along wide format,
Form above-mentioned crank shape by distortion ground not along the position that wide format only is offset the width dimensions of wide format, the terminal part at above-mentioned two ends be configured to because of the offset of above-mentioned crank shape approaching on Width.
6. the formation method of the continuous winding coil of a crank shape comprises:
The cross section that will have insulating protective film is the operation that the Wire-wound of rectangular shape repeatedly forms coiled wire-wound coil;
Prolong the operation of terminal part at the two ends of above-mentioned coiled wire-wound coil; And,
Form the operation of crank shape portion in a pair of head of above-mentioned coiled wire-wound coil, it is characterized in that,
In the operation that forms above-mentioned coiled wire-wound coil, also reel repeatedly in the two sides of the overlapping lead corresponding with rectangular shape, on above-mentioned overlapping side, be vertically formed the wide format corresponding with a plurality of leads, the mode of facing mutually and forming abreast with the part of above-mentioned wide format forms above-mentioned coiled wire-wound coil
In the operation that prolongs above-mentioned end portion, on the direction identical, on straight line, prolong the terminal part at above-mentioned two ends with the interval that on the wide cut direction of wide format, is offset with the direction of the parallel wide format of the both sides that are formed at above-mentioned coiled wire-wound coil,
In the operation of the above-mentioned crank shape of formation portion, roughly head at the two ends of above-mentioned coiled wire-wound coil, distortion ground forms the crank shape of position that only is offset the width of wide format along wide format, and it is approaching on the wide cut direction of wide format to constitute the terminal part at above-mentioned two ends.
7. the distributed winding stator of an electric rotating machine is characterized in that,
The continuous winding coil of crank shape, possess: the cross section with insulating protective film is the two sides of the overlapping lead corresponding with rectangular shape of the lead of rectangular shape and reels repeatedly, on above-mentioned overlapping side, be vertically formed the wide format of the width dimensions corresponding with a plurality of leads, and the coiled wire-wound coil that forms abreast of the part of above-mentioned wide format;
On the direction identical of the both sides of above-mentioned coiled wire-wound coil with the parallel direction of wide format, the terminal part at the two ends of the above-mentioned coiled wire-wound coil that on straight line, prolongs abreast; And,
Roughly head at the two ends of above-mentioned coiled wire-wound coil, distortion ground only is offset the position of width dimensions of wide format and the crank shape that forms along wide format,
Form above-mentioned crank shape by not twisting ground along the position that wide format only is offset the width dimensions of wide format, the terminal part at above-mentioned two ends be configured to because of the offset of above-mentioned crank shape approaching on Width, under the continuous winding coil of above-mentioned crank shape inserts state in a plurality of stator slots of stator core of electric rotating machine
The crank shape of above-mentioned continuous winding coil is crossed over the said stator groove and is configured, and be configured in the inboard of stator slot along the side that wide format only is offset the wide format that the position of the width of wide format forms abreast, the opposing party of the wide format of Xing Chenging is configured in the entrance side of stator slot abreast, be inserted into the above-mentioned terminal part at the two ends of the coil of prolongation abreast of the different coiled wire-wound coil in the different stator slots, and the inboard of stator slot and the middle body between the entrance side near and dispose, and be electrically connected.
8. the formation method of the distributed winding stator of an electric rotating machine is characterized in that,
The continuous winding coil of crank shape possesses: the cross section that will have insulating protective film is the lead of rectangular shape, also reel repeatedly in the two sides of the overlapping lead corresponding with rectangular shape, on above-mentioned overlapping side, be vertically formed the wide format of the width dimensions corresponding with a plurality of leads, and the coiled wire-wound coil that forms abreast of the part of above-mentioned wide format;
On the direction identical of the both sides of above-mentioned coiled wire-wound coil with the parallel direction of wide format, the terminal part at the two ends of the above-mentioned coiled wire-wound coil that on straight line, prolongs abreast; And,
Roughly head at the two ends of above-mentioned coiled wire-wound coil, distortion ground only is offset the position of width dimensions of wide format and the crank shape that forms along wide format,
Form above-mentioned crank shape by distortion ground not along the position that wide format only is offset the width dimensions of wide format, the terminal part at above-mentioned two ends be configured to because of the offset of above-mentioned crank shape approaching on Width,
This method comprises: the continuous winding coil of above-mentioned crank shape is inserted into operation a plurality of stator slots from the inboard of stator core;
The crank shape of above-mentioned continuous winding coil is crossed over the said stator groove and is configured, and will be configured in the inboard of stator slot along the side that wide format only is offset the wide format that the position of the width of wide format forms abreast, the opposing party of the wide format that forms abreast is configured in the entrance side of stator slot, will be inserted into the terminal part at two ends of the above-mentioned coil that prolongs abreast of different coiled wire-wound coils in the different stator slots, and the inboard of stator slot and the middle body between the entrance side near and the operation of configuration; And,
Will with the inboard of said stator groove and the middle body between the entrance side near and operation that a plurality of terminal parts of configuration are electrically connected by welding.
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| US5714824A (en) * | 1994-06-23 | 1998-02-03 | Hydro-Quebec | Conductor section for a stator frame of a polyphase dynamoelectric machine |
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