CN210867326U - Parallel phase winding, stator and motor - Google Patents
Parallel phase winding, stator and motor Download PDFInfo
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- CN210867326U CN210867326U CN201922490253.2U CN201922490253U CN210867326U CN 210867326 U CN210867326 U CN 210867326U CN 201922490253 U CN201922490253 U CN 201922490253U CN 210867326 U CN210867326 U CN 210867326U
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- 238000004804 winding Methods 0.000 title claims abstract description 47
- 239000004020 conductor Substances 0.000 claims abstract description 307
- 238000003466 welding Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000016507 interphase Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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Abstract
The utility model discloses a parallel phase winding, a stator and a motor, wherein the parallel phase winding comprises two coil ring groups consisting of Q coil rings, and the coil rings are formed by connecting P hairpin conductor groups arranged along the circumferential direction in series; the hairpin conductor group comprises two hairpin conductors which are arranged in a staggered mode in the circumferential direction, each hairpin conductor comprises a hairpin main body which is bent integrally in a U shape, each hairpin main body comprises two leg parts, a head part and support legs, and the adjacent leg parts on the two hairpin conductors which are arranged in a staggered mode are located in two adjacent groove positions; q coil rings in each coil ring group are arranged in Q circumferentially continuous adjacent slot positions of the stator; the adjacent hairpin conductors in the two hairpin conductor groups arranged on the two coil loops in a staggered manner are arranged side by side next to each other in the radial direction of the stator. The utility model has the advantages of structural arrangement is reasonable, and the hairpin conductor is arranged in order, can reduce the adjacent area of the conductor between the same inslot, is favorable to reducing the probability that alternate discharge takes place, improves motor life.
Description
Technical Field
The utility model relates to a flat wire motor technical field, very much relate to a side by side phase winding, stator and motor.
Background
The motor (including the motor and the generator) is a device for converting electric energy into mechanical energy (or converting mechanical energy into electric energy) according to the principle of electromagnetic induction, and can be used as a power source or a power generation device of various electric appliances such as household appliances, various machines such as electric vehicles and electric automobiles. The motors can be classified into dc motors and ac motors according to the kinds of their operating power sources, and the ac motors can be classified into single-phase motors and multi-phase motors (e.g., three-phase motors). The motor comprises a stator and a rotor, and a winding is arranged in a stator core slot of the stator. The traditional winding is formed by winding a round conducting wire, although the winding process is relatively simple, the space utilization rate in an iron core groove is low, useless copper at the end is wasted greatly, the power density is low, and the winding is gradually replaced by a flat copper wire or a rectangular-section copper wire.
At present, flat copper wire or rectangular section copper wire windings are mainly formed by connecting segmented hairpin conductors which are bent integrally into a U shape, when short-distance windings are adopted, two-phase or multi-phase winding hairpin conductor leg parts exist in the same stator core slot, because of different voltages between different phase windings, when a motor runs, voltage difference exists between the leg parts of adjacent different phase windings in the same slot, which is easy to damage the insulating varnish of the flat copper wire material used by the hairpin conductor, thereby influencing the service life of the motor, and the arrangement mode of the hairpin conductor in the phase winding influences the arrangement position of the different phase winding leg parts in the slot. And the assembly is difficult, which is not beneficial to the production and manufacture.
Disclosure of Invention
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a hairpin conductor kind few, structural arrangement is reasonable, can reduce the area that adjoins of the conductor of interchannel in the same groove, is favorable to reducing the probability that interphase discharge takes place, improves motor life and is favorable to producing side by side looks winding, stator and motor of manufacturing.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a side-by-side phase winding is characterized by comprising two groups of coil ring groups consisting of Q coil rings, wherein each coil ring is formed by connecting P hairpin conductor groups uniformly distributed along the circumferential direction of a stator in series, P is the number of magnetic pole pairs, and Q is the number of slots of each phase of each pole and is an integer greater than 1; the hairpin conductor group comprises at least two hairpin conductors which are arranged in a staggered manner in the circumferential direction of the stator, each hairpin conductor comprises a hairpin main body which is bent integrally in a U shape, each hairpin main body comprises two leg parts which are arranged in parallel and a head part connected to one end of each leg part, the other end of each leg part is provided with a supporting leg, and the adjacent leg parts on the hairpin conductors which are arranged in the staggered manner in the circumferential direction of the stator on the hairpin conductor group are positioned in two adjacent groove positions;
q coil rings in each coil ring group are arranged in Q circumferentially continuous adjacent slot positions of the stator; in the clockwise direction, the hairpin conductor group on the coil ring of the A-th slot position in one coil ring group and the hairpin conductor group on the coil ring of the A-th slot position in the other coil ring group are arranged in a staggered manner in the circumferential direction of the stator, so that the adjacent hairpin conductors in the two hairpin conductor groups arranged in a staggered manner on the two coil rings are arranged side by side and next to each other in the radial direction of the stator.
In order to ensure that the leg parts of the hairpin conductors are uniformly and fully distributed in the stator core slot, the relative positions of the leg parts on each hairpin conductor group in the stator core slot are consistent, and because the hairpin conductor groups on the coil rings which are positioned at the corresponding positions on the coil ring groups in the clockwise direction are arranged in a staggered manner, the adjacent hairpin conductors in the two hairpin conductor groups which are arranged in a staggered manner are mutually closely arranged side by side in the radial direction of the stator, so that the leg parts of the hairpin conductor groups on the two coil rings are mutually filled in the same slot position, and finally the leg parts which belong to the same phase in each slot position are sequentially and closely arranged along one side of the slot position, even if the leg parts which belong to different two phases are distributed in the same slot position, only one sides of the leg parts are mutually adjacent, so that the adjacent area of the conductors in the same slot position is greatly reduced, and the probability of interphase discharge is favorably reduced, the service life of the motor is prolonged. And because the types of the hairpin conductors on each hairpin conductor group are the same, as long as the types of the hairpin conductors on the hairpin conductor groups are determined, the types of the hairpin conductors on the whole phase winding can be determined, the use of other types of hairpin conductors is avoided, so that the types of the hairpin conductors are less, and because the heads of the hairpin conductors of different types are arranged side by side in the radial direction of the stator in close proximity to each other, the various hairpin conductors can be molded by the same set of mold, so that the production efficiency and the cost are improved.
Further, in the assembled state, each stator core slot has 2N leg portions, where N is 2 or an odd number greater than 2.
As an optimization, in an assembly state, each stator core slot is provided with 4 leg portions, each hairpin conductor group comprises 2 hairpin conductors, one hairpin conductor is a wave-shaped conductor with two legs deflected and bent along the opposite direction in the width direction of the hairpin body, the other hairpin conductor is an O-shaped conductor which is annular as a whole, and the two legs of the O-shaped conductor are deflected and bent towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body; two adjacent leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the adjacent grooves, and the other leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the direction of departing from each other.
As an optimization, in an assembly state, each stator core slot is provided with 6 leg portions, each hairpin conductor group comprises 3 hairpin conductors, one hairpin conductor is a wave-shaped conductor with two legs deflected and bent along the opposite direction in the width direction of the hairpin body, the other two hairpin conductors are O-shaped conductors which are annular as a whole, and the two legs of the O-shaped conductor are deflected and bent towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body; the two O-shaped conductors are arranged in parallel at intervals in the radial direction of the stator; two adjacent leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the adjacent grooves, and the other leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the direction of departing from each other.
As an optimization, in an assembly state, each stator core slot is provided with 6 leg portions, each hairpin conductor group comprises 3 hairpin conductors, one hairpin conductor is an O-shaped conductor which is annular as a whole, the other two conductors are a first type of inclined U-shaped conductor and a second type of inclined U-shaped conductor which are arranged side by side at intervals in the radial direction of the stator, a support leg on one leg portion of the first type of inclined U-shaped conductor and a support leg on the other leg portion of the second type of inclined U-shaped conductor are deflected and bent in the width direction of the hairpin main body along the direction deviating from each other, and the other two support legs of the first type of inclined U-shaped conductor and the other two support legs of the second type of inclined U-shaped conductor are oppositely bent and connected in the width direction of the hairpin; the two support legs of the O-shaped conductor deflect and bend towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body; the first type of U-shaped conductors and the second type of U-shaped conductors are positioned in adjacent slots with adjacent leg portions on the O-shaped conductors.
Preferably, in an assembly state, each stator core slot is provided with 10 leg portions, and the hairpin conductor group comprises two first type inclined U-shaped conductors arranged side by side at intervals in a radial direction of the stator, two second type inclined U-shaped conductors arranged side by side at intervals in the radial direction of the stator, and a wave-shaped conductor arranged side by side at intervals in the radial direction of the stator together with the first type inclined U-shaped conductors or the second type inclined U-shaped conductors; two adjacent leg parts on the first type of inclined U-shaped conductor and the second type of inclined U-shaped conductor are positioned in adjacent grooves, two support legs of the first type of inclined U-shaped conductor deflect and bend towards the second type of inclined U-shaped conductor in the width direction of the hairpin main body, and two support legs of the second type of inclined U-shaped conductor deflect and bend towards the first type of inclined U-shaped conductor in the width direction of the hairpin main body.
As an optimization, in an assembly state, each stator core slot is provided with 10 leg portions, the hairpin conductor group comprises a first type of inclined U-shaped conductor and a second type of inclined U-shaped conductor which are arranged in a staggered manner in the circumferential direction of the stator, two adjacent leg portions of the first type of inclined U-shaped conductor and the second type of inclined U-shaped conductor are positioned in adjacent slots, two legs of the first type of inclined U-shaped conductor deflect and bend towards the second type of inclined U-shaped conductor in the width direction of the hairpin main body, and two legs of the second type of inclined U-shaped conductor deflect towards the first type of inclined U-shaped conductor in the width direction of the hairpin main body; the stator comprises a stator body, a first type of inclined U-shaped conductor and a second type of inclined U-shaped conductor, and is characterized by further comprising a wave-shaped conductor and two O-shaped conductors, wherein the wave-shaped conductor and the first type of inclined U-shaped conductor or the second type of inclined U-shaped conductor are arranged side by side in a stator radial direction at intervals, the two O-shaped conductors and the second type of inclined U-shaped conductor or the first type of inclined U-shaped conductor are arranged in the stator radial direction at intervals, and the two O-shaped conductors are.
The stator is characterized by comprising a stator core and a plurality of phases which are arranged on the stator core and are arranged side by side, wherein the connecting ends of the plurality of phases which are arranged on the side by side phase windings and used for connecting a power supply are respectively connected with a power supply terminal, and the connecting ends of the plurality of phases which are arranged on the phase windings and used for connecting star points are connected through star point connecting conductors in a welding mode.
An electrical machine comprising a stator as described above.
To sum up, the utility model has the advantages of the hairpin conductor kind is few, and structural arrangement is reasonable, can reduce the adjacent area of same inslot looks internal conductor, is favorable to reducing the probability that alternate discharge takes place, improves motor life and is favorable to manufacturing.
Drawings
Fig. 1 is a schematic structural view of a stator in embodiment 1.
Fig. 2 is a schematic diagram of the structure of the method in the circle in embodiment 1.
Fig. 3 is a schematic structural view of a three-phase winding in embodiment 1.
Fig. 4 is a schematic structural view of a coil loop a1 in example 1.
Fig. 5 is a schematic structural view of a coil loop a2 in example 1.
Fig. 6 is a schematic structural view of a corrugated conductor in embodiment 1.
Fig. 7 is a schematic structural view of an O-shaped conductor in embodiment 1.
Fig. 8 is a schematic diagram of the structure of the hairpin conductor set in example 1.
Fig. 9 shows a branch in which coil loops a1 and a2 are connected in series in example 1.
Fig. 10 shows a branch in which coil loops b1 and b2 are connected in series in example 1.
Fig. 11 is a schematic view of the structure of one phase winding in embodiment 1.
Fig. 12 is an enlarged schematic view of the circle in fig. 11.
Fig. 13 is a schematic view of the crown side of a stator in which one phase winding is mounted in embodiment 1.
Fig. 14 is a structural schematic diagram of the cross section of fig. 13.
Fig. 15 is a schematic diagram of the structure in fig. 14 at the circle.
Fig. 16 is a schematic structural view of a stator in embodiment 2.
Fig. 17 is a schematic diagram of a method structure in a circle in embodiment 2.
Fig. 18 is a schematic structural view of a three-phase winding in embodiment 2.
Fig. 19 is a schematic structural view of a coil loop a1 in example 2.
Fig. 20 is a schematic structural view of a coil loop a2 in example 2.
Fig. 21 is a schematic structural diagram of a hairpin conductor set in example 2.
Fig. 22 shows a branch circuit in which coil loops a1 and a2 are connected in series in example 2.
Fig. 23 shows a branch circuit in which coil loops b1 and b2 are connected in series in example 2.
Fig. 24 is a schematic view of the structure of one phase winding in embodiment 2.
Fig. 25 is a schematic view of the crown side of a stator in which one phase winding is mounted in embodiment 2.
Fig. 26 is a structural schematic diagram of the cross section of fig. 25.
Fig. 27 is a schematic view of the structure of fig. 26 at the circle.
Fig. 28 is a schematic structural view of a hairpin conductor set in example 3.
Fig. 29 is a schematic structural view of a hairpin conductor set in example 4.
Fig. 30 is a schematic diagram of the structure of the hairpin conductor set in example 5.
Fig. 31 is a schematic structural view of a first type of offset U-shaped conductor.
Fig. 32 is a schematic structural view of a second type of U-shaped offset conductor.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1: as shown in fig. 1 to 3, a motor includes a stator, the stator includes a stator core 8 and three phase windings installed on the stator core 8, one end of each branch on the phase windings is connected with each other through a star point connecting conductor 7, and the other end of two parallel branches on each phase winding is connected in parallel through a power supply leading conductor 6.
The stator core 8 includes a main body which is cylindrical as a whole, a plurality of stator core slots which are opened inwards along the radial direction are arranged on the inner ring of the stator core 8 along the circumferential direction, the lower end of each stator core slot is an insertion side (or a crown side), and the upper end of each stator core slot is a connection side.
In this embodiment, the number Q of slots per phase per pole is 2, the number P of pole pairs is 4, and in an assembled state, each stator core slot has 4 leg portions, that is, each phase winding includes two coil loop groups each including 2 coil loops, which are a and b, respectively; the coil loop group a comprises a coil loop a1 and a coil loop a2 which are arranged in sequence in the clockwise direction, and the coil loop a1 and the coil loop a2 are located in two circumferentially and continuously adjacent slots of the stator. The coil loop group b comprises a coil loop b1 and a coil loop b2 which are arranged in sequence in the clockwise direction, and the coil loop b1 and the coil loop b2 are also positioned in two slots which are continuously adjacent in the circumferential direction of the stator.
The coil loops a1, a2, b1 and b2 are formed by connecting 4 hairpin conductor sets uniformly distributed along the circumferential direction of the stator in series, as shown in fig. 4 and 5.
The hairpin conductor group comprises two hairpin conductors which are arranged in a staggered mode in the circumferential direction of the stator, wherein one hairpin conductor is a corrugated conductor, and the other hairpin conductor is an O-shaped conductor which is annular as a whole; wave conductor and O shape conductor all are the hairpin main part that the U type was buckled including whole, the hairpin main part includes two mutual parallel arrangement's shank and connects the head in two shank one ends, two the other end of shank respectively is provided with a stabilizer blade. The two support legs of the corrugated conductor are deflected and bent along the opposite direction along the width direction of the card body, as shown in fig. 6; the two support legs of the O-shaped conductor deflect and bend towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body, as shown in fig. 7; two adjacent leg portions of the wave-shaped conductor and the O-shaped conductor are positioned in the adjacent grooves, and the other leg portions of the wave-shaped conductor and the O-shaped conductor are positioned in the direction of departing from each other, as shown in FIG. 8.
In this embodiment, coil loop a1 and coil loop a2 in coil loop group a are connected in series to form a branch, as shown in fig. 9; coil loop b1 and coil loop b2 in coil loop group b are connected in series with each other to form another branch, as shown in fig. 10; 2 branches are formed in parallel, as shown in fig. 11 and 12, wherein a branch in which a coil loop a1 and a coil loop a2 are connected in series in fig. 9 is shown by a solid line in fig. 11, a branch in which a coil loop b1 and a coil loop b2 are connected in series in fig. 10 is shown by a dotted line, the viewing angles of fig. 9, 10 and 11 are completely the same, and as can be seen from positions corresponding to the circle of fig. 11 in fig. 9 and 10, the hairpin conductors of the coil loops a1 and a2 at the circle are wave-shaped conductors, and the hairpin conductors of the coil loops b1 and b2 at the circle are O-shaped conductors. Fig. 12 is an enlarged schematic structural view taken at a circle in fig. 11, and as can be seen from fig. 12, the O-shaped conductor of coil loop b1 and the wave-shaped conductor of coil loop a1 are arranged side by side next to each other in the radial direction; the O-shaped conductor of coil loop b2 and the wave-shaped conductor of coil loop a2 are arranged side by side next to each other in the radial direction.
In addition, as shown in fig. 13 and 14, in the present embodiment, on the same card sending conductor group, two leg portions of the wave conductor and the O-shaped conductor located in adjacent slots are located in the second layer and the third layer of each slot, respectively, and the other two leg portions of the wave conductor and the O-shaped conductor are located in the first layer and the fourth layer of each slot. For convenience of description, as shown in fig. 15, taking the coil loop group a as an example, in the coil loop group a, two leg portions adjacent to each other on the hairpin conductor group located on the coil loop a1 are located on the second layer and the third layer on the adjacent k +1 th slot and the adjacent k +2 th slot respectively, and the two leg portions adjacent to each other on the adjacent hairpin conductor group located on coil loop a2 are located on the second layer and the third layer on the adjacent k +2 th slot and k +3 th slot respectively, and the first layers in the k + 1-th slot and the k + 2-th slot are filled with leg portions of the hairpin conductors arranged side by side on the coil loops b1 and b2 on the counterclockwise side of the hairpin conductor group respectively, and the fourth layer on the (k + 2) th slot and the (k + 3) th slot is filled with the leg portions of the hairpin conductors arranged side by side on the coil loops b1 and b2 located on the clockwise side of the hairpin conductor group, respectively. In this way, in each pole, the slot position located in the middle (i.e., the k +2 slot) is completely filled with the leg portion of the hairpin conductor belonging to the same phase, and the slot positions located on both sides of the slot (i.e., the k +1 slot and the k +3 slot) are filled with the leg portion of the hairpin conductor belonging to the phase only in a half of the slot close to the inner layer or the outer layer of the stator, and the other half is filled with the leg portion of the hairpin conductor belonging to the adjacent other phase winding, as shown in fig. 15. Only one surface of each two adjacent phase windings in the same stator core slot is close to each other, so that the adjoining area of conductors between different phases in the same slot is reduced, the probability of interphase discharge is favorably reduced, and the service life of the motor is prolonged. Moreover, can see from figure 1 that adopt the utility model discloses the scheme is arranged, can make arranging of hairpin conductor more orderly, and structural arrangement is more reasonable.
Example 2:
in this embodiment, as in embodiment 1, the number Q of slots per phase per pole is 2, and the number P of pole pairs is 4, that is, each phase winding includes two coil loop groups each including 2 coil loops, which are a and b; the coil loop group a comprises a coil loop a1 and a coil loop a2 which are arranged in sequence in the clockwise direction, and the coil loop a1 and the coil loop a2 are located in two circumferentially and continuously adjacent slots of the stator. The coil loop group b comprises a coil loop b1 and a coil loop b2 which are arranged in sequence in the clockwise direction, and the coil loop b1 and the coil loop b2 are also positioned in two slots which are continuously adjacent in the circumferential direction of the stator.
The main differences from example 1 are: in the assembled state, there are 6 leg portions in each stator core slot.
In this embodiment, the hairpin conductor group includes 3 hairpin conductors, one of which is a corrugated conductor, and the other two of which are O-shaped conductors that are annular as a whole; wave conductor and O shape conductor all are the hairpin main part that the U type was buckled including whole, the hairpin main part includes two mutual parallel arrangement's shank and connects the head in two shank one ends, two the other end of shank respectively is provided with a stabilizer blade. The two support legs of the corrugated conductor are deflected and bent along the opposite direction along the width direction of the card body, as shown in fig. 6; the two support legs of the O-shaped conductor deflect and bend towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body, as shown in fig. 7; the two O-shaped conductors are arranged side by side at intervals in the radial direction of the stator, two adjacent leg portions of the wave-shaped conductor and the O-shaped conductor are located in adjacent slots, and the other leg portions of the wave-shaped conductor and the O-shaped conductor are located in a direction away from each other, as shown in fig. 21.
As shown in fig. 22, coil loop a1 and coil loop a2 in coil loop group a are connected in series to form a branch; as shown in fig. 23, coil loop b1 and coil loop b2 in coil loop group b are connected in series with each other to form another branch, forming 2 branches arranged in parallel, as shown in fig. 24.
In addition, as shown in fig. 25 and 26, in the present embodiment, on the same hairpin conductor group, three leg portions of the corrugated conductor and two O-shaped conductors arranged side by side in adjacent slots are located in the second layer, the fourth layer and the sixth layer of the adjacent two slots, respectively, and the other 3 leg portions of the corrugated conductor and the O-shaped conductors are located in the fifth layer, the third layer and the first layer of the slots where they are located, respectively. For convenience of description, as shown in fig. 15, taking the coil loop group a as an example, in the coil loop group a, the mutually adjacent leg portions of the hairpin conductor group located on the coil loop a1 are respectively located in the second layer in the adjacent (k + 1) th slot and the fourth layer and the sixth layer in the (k + 2) th slot, and the mutually adjacent leg portions of the adjacent hairpin conductor group located on coil loop a2 are located in the second layer in the adjacent (k + 2) th slot and the fourth layer and the sixth layer in the (k + 3) th slot, and the first and third layers in the k + 1-th slot and the k + 2-th slot are filled with leg portions of O-shaped conductors arranged side by side on coil loops b1 and b2 located on the counterclockwise side of the hairpin conductor group respectively, and the sixth layer on the (k + 2) th slot and the (k + 3) th slot is filled with the leg portions of the wave conductors on the coil loops b1 and b2 located on the clockwise side of the hairpin conductor group, respectively. In this way, in each pole, the slot position located in the middle (i.e., the k +2 slot) is completely filled with the leg portion of the hairpin conductor belonging to the same phase, and the slot positions located on both sides of the slot (i.e., the k +1 slot and the k +3 slot) are filled with the leg portion of the hairpin conductor belonging to the phase only in a half of the slot close to the inner layer or the outer layer of the stator, and the other half is filled with the leg portion of the hairpin conductor belonging to the adjacent other phase winding, as shown in fig. 27. Only one surface of each two adjacent phase windings in the same stator core slot is close to each other, so that the adjoining area of conductors between different phases in the same slot is reduced, the probability of interphase discharge is favorably reduced, and the service life of the motor is prolonged. Moreover, can see from figure 1 that adopt the utility model discloses the scheme is arranged, can make arranging of hairpin conductor more orderly, and structural arrangement is more reasonable.
Example 3:
as in embodiment 2, there are 6 leg portions in each stator core slot in the assembled state.
The main difference from embodiment 2 is that, as shown in fig. 28, the hairpin conductor group includes 3 hairpin conductors, one of which is an O-shaped conductor in an annular shape as a whole, and the other two conductors are a first type of offset U-shaped conductor and a second type of offset U-shaped conductor which are arranged side by side at intervals in the radial direction of the stator, a leg on one leg portion of the first type of offset U-shaped conductor and a leg on the other leg portion of the second type of offset U-shaped conductor are bent and deflected in a direction away from each other in the width direction of the hairpin body, and the other two legs of the two are bent and connected in the width direction of the hairpin body; the two support legs of the O-shaped conductor deflect and bend towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body; the first type of U-shaped conductors and the second type of U-shaped conductors are positioned in adjacent slots with adjacent leg portions on the O-shaped conductors.
Example 4: the main difference from embodiment 1 is that in the assembled state, there are 10 leg portions in each stator core slot.
As shown in fig. 29, the card conductor set includes two first type of partial U-shaped conductors arranged side by side with an interval in the stator radial direction, two second type of partial U-shaped conductors arranged side by side with an interval in the stator radial direction, and a wavy conductor arranged side by side with an interval in the stator radial direction with the first type of partial U-shaped conductors or the second type of partial U-shaped conductors; two adjacent leg parts on the first type of inclined U-shaped conductor and the second type of inclined U-shaped conductor are positioned in adjacent grooves, two support legs of the first type of inclined U-shaped conductor deflect and bend towards the second type of inclined U-shaped conductor in the width direction of the hairpin main body, and two support legs of the second type of inclined U-shaped conductor deflect and bend towards the first type of inclined U-shaped conductor in the width direction of the hairpin main body.
Example 5: the main difference from embodiment 4 is that, as shown in fig. 30, the hairpin conductor group includes a first type of eccentric U-shaped conductor and a second type of eccentric U-shaped conductor which are arranged in a staggered manner in the circumferential direction of the stator, two adjacent leg portions of the first type of eccentric U-shaped conductor and the second type of eccentric U-shaped conductor are located in adjacent slots, two legs of the first type of eccentric U-shaped conductor are bent and deflected toward the second type of eccentric U-shaped conductor in the width direction of the hairpin body, and two legs of the second type of eccentric U-shaped conductor are bent and deflected toward the first type of eccentric U-shaped conductor in the width direction of the hairpin body; the stator comprises a first type of inclined U-shaped conductor and a second type of inclined U-shaped conductor, and is characterized by further comprising a wave-shaped conductor and two O-shaped conductors, wherein the wave-shaped conductor and the first type of inclined U-shaped conductor are arranged side by side at intervals in the radial direction of the stator, the two O-shaped conductors and the second type of inclined U-shaped conductor are arranged at intervals in the radial direction of the stator, and the two O-shaped conductors are respectively positioned on two sides of the second.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A side-by-side phase winding is characterized by comprising two groups of coil ring groups consisting of Q coil rings, wherein each coil ring is formed by connecting P hairpin conductor groups uniformly distributed along the circumferential direction of a stator in series, P is the number of magnetic pole pairs, and Q is the number of slots of each phase of each pole and is an integer greater than 1; the hairpin conductor group comprises at least two hairpin conductors which are arranged in a staggered manner in the circumferential direction of the stator, each hairpin conductor comprises a hairpin main body which is bent integrally in a U shape, each hairpin main body comprises two leg parts which are arranged in parallel and a head part connected to one end of each leg part, the other end of each leg part is provided with a supporting leg, and the adjacent leg parts on the hairpin conductors which are arranged in the staggered manner in the circumferential direction of the stator on the hairpin conductor group are positioned in two adjacent groove positions;
q coil rings in each coil ring group are arranged in Q circumferentially continuous adjacent slot positions of the stator; in the clockwise direction, the hairpin conductor group on the coil ring of the A-th slot position in one coil ring group and the hairpin conductor group on the coil ring of the A-th slot position in the other coil ring group are arranged in a staggered manner in the circumferential direction of the stator, so that the adjacent hairpin conductors in the two hairpin conductor groups arranged in a staggered manner on the two coil rings are arranged side by side and next to each other in the radial direction of the stator.
2. A side-by-side phase winding according to claim 1 wherein in the assembled condition there are 2N leg portions in each stator core slot, N being 2 or an odd number greater than 2.
3. The side-by-side phase winding of claim 1, wherein in an assembled state, each stator core slot has 4 leg portions, and the hairpin conductor group includes 2 hairpin conductors, one of which is a corrugated conductor having two legs bent in a direction away from each other in a width direction of the hairpin body, and the other is an O-shaped conductor having an overall annular shape, and the two legs of the O-shaped conductor are bent in a direction toward a middle portion in the width direction of the hairpin body and are arranged at staggered intervals in a thickness direction of the hairpin body; two adjacent leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the adjacent grooves, and the other leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the direction of departing from each other.
4. The side-by-side phase winding of claim 1, wherein in an assembled state, each stator core slot has 6 leg portions, and the hairpin conductor set includes 3 hairpin conductors, one of which is a corrugated conductor having two legs bent in a direction away from each other in a width direction of the hairpin body, and the other two of which are O-shaped conductors having an overall annular shape, the two legs of the O-shaped conductor being bent in a direction toward a middle portion in the width direction of the hairpin body and being arranged at staggered intervals in a thickness direction of the hairpin body; the two O-shaped conductors are arranged in parallel at intervals in the radial direction of the stator; two adjacent leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the adjacent grooves, and the other leg parts of the wave-shaped conductor and the O-shaped conductor are positioned in the direction of departing from each other.
5. A side-by-side phase winding according to claim 1, wherein in an assembled state, each stator core slot has 6 legs, the hairpin conductor set includes 3 hairpin conductors, one of which is an O-shaped conductor in an annular shape as a whole, and the other two conductors are a first type of offset U-shaped conductor and a second type of offset U-shaped conductor which are arranged side by side at intervals in a radial direction of the stator, the leg on one leg on the first type of offset U-shaped conductor and the leg on the other leg on the second type of offset U-shaped conductor are bent and deflected in directions away from each other in a width direction of the hairpin body, and the other two legs are bent and connected in the width direction of the hairpin body; the two support legs of the O-shaped conductor deflect and bend towards the middle part in the width direction of the hairpin body and are arranged at intervals in a staggered manner in the thickness direction of the hairpin body; the first type of U-shaped conductors and the second type of U-shaped conductors are positioned in adjacent slots with adjacent leg portions on the O-shaped conductors.
6. A side-by-side phase winding according to claim 1 wherein in an assembled state there are 10 leg portions in each stator core slot, said set of hairpin conductors comprising two offset U-shaped conductors of a first type disposed side-by-side with a spacing from each other in the stator radial direction and two offset U-shaped conductors of a second type disposed side-by-side with a spacing from each other in the stator radial direction, and a corrugated conductor disposed side-by-side with either the offset U-shaped conductors of the first type or the offset U-shaped conductors of the second type with a spacing from each other in the stator radial direction; two adjacent leg parts on the first type of inclined U-shaped conductor and the second type of inclined U-shaped conductor are positioned in adjacent grooves, two support legs of the first type of inclined U-shaped conductor deflect and bend towards the second type of inclined U-shaped conductor in the width direction of the hairpin main body, and two support legs of the second type of inclined U-shaped conductor deflect and bend towards the first type of inclined U-shaped conductor in the width direction of the hairpin main body.
7. The side-by-side phase winding of claim 1 wherein in an assembled state, there are 10 legs in each stator core slot, the set of hairpin conductors includes first and second offset U-shaped conductors offset circumferentially of the stator, adjacent two legs of the first and second offset U-shaped conductors are located in adjacent slots, and two legs of the first offset U-shaped conductor are bent in a direction of width of the hairpin body toward the second offset U-shaped conductor, and two legs of the second offset U-shaped conductor are bent in a direction of width of the hairpin body toward the first offset U-shaped conductor; the stator comprises a stator body, a first type of inclined U-shaped conductor and a second type of inclined U-shaped conductor, and is characterized by further comprising a wave-shaped conductor and two O-shaped conductors, wherein the wave-shaped conductor and the first type of inclined U-shaped conductor or the second type of inclined U-shaped conductor are arranged side by side in a stator radial direction at intervals, the two O-shaped conductors and the second type of inclined U-shaped conductor or the first type of inclined U-shaped conductor are arranged in the stator radial direction at intervals, and the two O-shaped conductors are.
8. A stator is characterized by comprising a stator core and a plurality of phases of side-by-side phase windings installed on the stator core and according to any one of claims 1 to 7, wherein power supply terminals are respectively connected to connecting ends of the plurality of phases of side-by-side phase windings for connecting a power supply, and the connecting ends of the plurality of phases of phase windings for connecting star points are connected through star point connecting conductors in a welding mode.
9. An electrical machine comprising a stator according to claim 8.
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| CN201922490253.2U CN210867326U (en) | 2019-12-31 | 2019-12-31 | Parallel phase winding, stator and motor |
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| CN201922490253.2U CN210867326U (en) | 2019-12-31 | 2019-12-31 | Parallel phase winding, stator and motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135697A1 (en) * | 2019-12-31 | 2021-07-08 | 重庆宗申电动力科技有限公司 | Side-by-side phase winding, stator and motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135697A1 (en) * | 2019-12-31 | 2021-07-08 | 重庆宗申电动力科技有限公司 | Side-by-side phase winding, stator and motor |
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Denomination of utility model: A type of parallel phase winding, stator, and motor Effective date of registration: 20231016 Granted publication date: 20200626 Pledgee: Chongqing Zongshen Jiyan Mechanical and Electrical Technology Co.,Ltd. Pledgor: CHONGQING ZONGSHEN ELECTRIC POWER TECHNOLOGY Co.,Ltd. Registration number: Y2023980061209 |