CN218472875U - New forms of energy motor stator - Google Patents
New forms of energy motor stator Download PDFInfo
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- CN218472875U CN218472875U CN202222665610.6U CN202222665610U CN218472875U CN 218472875 U CN218472875 U CN 218472875U CN 202222665610 U CN202222665610 U CN 202222665610U CN 218472875 U CN218472875 U CN 218472875U
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Abstract
The utility model discloses a new energy motor stator, which comprises a stator core with 3n stator slots, and comprises 3n flat wires, wherein each flat wire is correspondingly provided with a stator slot matching and embedding; the flat wires are divided into three groups on average, two ends of the n flat wires of the first group are respectively connected with a first phase guide ring, two ends of the n flat wires of the second group are respectively connected with a second phase guide ring, and two ends of the n flat wires of the third group are respectively connected with a third phase guide ring. The utility model uses a single flat wire to replace the prior wire winding to be correspondingly embedded with the stator slot, thereby avoiding the clearance between a plurality of wires in the wire winding and improving the slot fullness rate; meanwhile, the copper ring connection replaces the original alternate bending connection, so that the height of a motor winding is reduced, and the energy loss of the motor caused by heating is reduced.
Description
Technical Field
The utility model belongs to the technical field of the motor technique and specifically relates to a new forms of energy motor stator is related to.
Background
In recent years, new energy automobiles are rapidly developed, and requirements on motors, such as power density, torque density, temperature rise and energy consumption of the motors, are more and more strict; meanwhile, with the increasing shortage of energy sources, the requirement of low energy consumption of the motor is more and more prominent, wherein the heating of the motor is the main energy loss mode of the motor, and the calorific value of the stator winding of the motor directly determines the energy consumption of the motor. In the present motor, the winding position of stator does not participate in the output of the required energy of motor, and the simple heat that generates heat belongs to motor energy loss's main part, therefore the advantage of flat wire motor than round wire motor lies in energy density height, and its core is that the unnecessary size at winding position has very big improvement than round wire motor, has improved the full rate of groove relatively closely. However, when a plurality of flat copper wires of the flat wire motor are wound, gaps still exist among the flat copper wires, and the space cannot be fully utilized to improve the groove fullness.
The motor stator and the motor disclosed in the chinese patent literature have a publication number CN112803632B and a publication date of 2022-05-10, and the motor stator includes a stator core, N stator slots are configured on the stator core, the number of pole pairs of a motor rotor is p, the N stator slots are sequentially divided into 6p stator slot groups along a first direction, each stator slot group includes q stator slots sequentially arranged along the first direction, the same-side single-side coils of the q groups of sinusoidal windings adopting a lap winding type winding manner are respectively embedded in the q stator slots in each stator slot group in a one-to-one correspondence manner, q = N/6p, the slot areas of the q stator slots in each stator slot group decrease from the central stator slot to the stator slots on both sides, and the stator slot with the largest area among the q stator slots corresponds to the coil with the largest coil turn number among the q groups of sinusoidal windings, wherein the first direction is the circumferential direction of the stator core, and q is not less than 3. In the technology, the slot area of each stator slot in the same stator slot group is matched with the number of turns of the embedded coil of the lap winding, so that the slot fullness rate is ensured, and the material utilization rate is improved; however, it is still impossible to avoid the existence of gaps between a plurality of wires in the coil winding, which limits the further improvement of the slot filling factor.
Disclosure of Invention
The utility model provides a new energy motor stator, which aims to overcome the problem that the full rate of the slot can not be improved by fully utilizing the gaps existing among a plurality of wires in the winding of the motor stator in the prior art, and uses a single flat wire to replace the prior wire winding to be correspondingly embedded with the stator slot, thereby avoiding the gaps among a plurality of wires in the wire winding and improving the full rate of the slot; meanwhile, the guide ring connection replaces the original alternate bending connection, the height of a motor winding is reduced, and the energy loss of the motor caused by heating is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a new energy motor stator comprises a stator core with 3n stator slots, and comprises 3n flat wires, wherein each flat wire is correspondingly provided with one stator slot which is matched and embedded; the flat wires are divided into three groups on average, two ends of the n flat wires of the first group are respectively connected with a first phase guide ring, two ends of the n flat wires of the second group are respectively connected with a second phase guide ring, and two ends of the n flat wires of the third group are respectively connected with a third phase guide ring.
The utility model adopts the jogging of the single flat wire with the cross section shape matched with the cross section shape of the stator slot and the stator slot, and uses the single flat wire to replace a plurality of wire windings, thus improving the slot fullness rate which can reach more than ninety-five percent under the condition of solving the space gap existing among a plurality of wires; the flat wires are divided into three groups, each group corresponds to one of three UVW phases, and the original interphase bending connection is replaced by the guide ring connection, so that the height of a winding in the stator can be effectively reduced, and the energy loss of the motor caused by heating is reduced.
Preferably, a second group of flat wires and a third group of flat wires are arranged between two adjacent flat wires of the first group; a third group of flat wires and a first group of flat wires are arranged between two adjacent flat wires of the second group.
In the utility model, the 3n flat wires are rotationally symmetrical by the central axis of the stator core, and the included angles between two adjacent flat wires in the same group are unified to be 120/n degrees; the n flat wires in the first group are rotated by 40/n degrees in the clockwise direction or the anticlockwise direction to be the positions of the n flat wires in the second group; the position of the n flat wires in the third group is determined by rotating the n flat wires in the first group by 40/n degrees in the counterclockwise direction or the clockwise direction; this symmetrical arrangement ensures stability of the magnetic field and balance of the electrical potential.
Preferably, a first phase lead-out wire is connected to the first phase guide ring; a second phase outgoing line is connected to the second phase guide ring; and a third phase lead-out wire is connected to the third phase guide ring.
The utility model discloses well three kinds of lead-out wires correspond the UVW three-phase, connect the lead-out wire on the guide ring and can make things convenient for the input/output connection of motor, and the coating in the lead-out wire outside has insulating varnish to carry out insulation treatment simultaneously.
Preferably, an inner diameter of the first phase guide ring is larger than an outer diameter of the second phase guide ring; the inner diameter of the second phase guide ring is larger than the outer diameter of the third phase guide ring; the heights of the first phase guide ring, the second phase guide ring and the third phase guide ring are sequentially increased.
The utility model discloses in from motor stator's circular cross section direction, first looks lead ring is in the position of outer lane, and the third phase is led the ring and is in the position of inner circle, and the second is led the ring and is in between all the other double-phase lead rings, and the difference between the external diameter of first looks lead ring and the internal diameter of third phase lead ring should be less than or equal to flat wire along the radial length of stator core to be connected of flat wire and lead ring.
Preferably, an inner diameter of the first phase guide ring is larger than an outer diameter of the second phase guide ring; the inner diameter of the second phase guide ring is larger than the outer diameter of the third phase guide ring; the heights of the first phase guide ring, the second phase guide ring and the third phase guide ring are sequentially reduced.
In the utility model, in order to connect the three guide rings with the outside through the three-phase lead-out wires, the three guide rings can be set to different heights relative to the two ends of the flat wire; the first phase guide ring, the second phase guide ring and the third phase guide ring can be arranged from high to low or from low to high from the outer side to the inner side, and the first phase guide ring, the second phase guide ring and the third phase guide ring can be more conveniently welded and connected with the flat wire when being arranged from low to high.
Preferably, the two ends of the flat wires of the second group are provided with second phase wire grooves connected with the second phase guide rings, and spaces for accommodating the first phase guide rings are reserved; the flat wires of the third group are provided with third phase wire grooves connected with the third phase guide rings, and spaces for accommodating the first phase guide rings and the second phase guide rings are reserved. The two ends of the first group of flat wires are provided with a first phase wire groove connected with the first phase guide ring, and the shape of the first phase wire groove is matched with that of the first phase guide ring.
The second phase guide groove arranged in the utility model comprises a space for limiting the position of the second phase guide ring and is welded, so that the upper surface of the second phase guide ring is flush with the end surface of the flat wire of the second group, and meanwhile, the second phase guide groove is also provided with a space for accommodating the first phase guide ring, thereby avoiding the contact between the first phase guide ring and the flat wire of the second group; the third phase wire groove is arranged in the same purpose as the second phase wire groove, so that the first phase guide ring and the second phase guide ring are prevented from being contacted with the flat wires of the third group; furthermore, first phase conductor slots can be provided at both ends of the flat conductors of the first group for accommodating the positions defining the first phase conductor loops; the three types of guide rings are located at different heights by arranging the wire guide grooves at different heights.
Preferably, the flat conductor is wrapped with insulating paper, and the flat conductor wrapped with the insulating paper is in interference connection with the stator slot; the flat wire is a flat copper wire.
In the utility model, the outside of the flat wire is wrapped with the insulating paper for insulation, and the interference connection between the flat wire and the stator slot can avoid the loose falling of the flat wire after being connected to the motor stator, thereby ensuring the stability and safety of the motor stator; different metal conductors can be selected according to actual needs by the flat wire, and flat copper wires are preferably selected in actual life.
Preferably, the first phase guide ring, the second phase guide ring and the third phase guide ring are coated with insulating paint on the outer sides; the first phase guide ring, the second phase guide ring and the third phase guide ring are all copper rings.
After the three guide rings are welded and connected with the flat wire, the three guide rings can be immersed in insulating liquid to be coated with insulating paint for insulation, so that the problems of interference, breakdown, short circuit or fusing and the like in the working process of the motor can be avoided, and the safety is ensured; meanwhile, the guide ring can also be a copper ring made of a metal copper material, so that the guide ring has good conductivity and low cost.
The utility model discloses following beneficial effect has: the single flat wire replaces the original wire winding to be correspondingly embedded with the stator slot, so that the gaps among a plurality of wires in the wire winding are avoided, and the slot fullness rate is improved; meanwhile, the original alternate bending connection is replaced by the guide ring connection, so that the height of a motor winding is reduced, and the energy loss of the motor caused by heating is reduced; the copper ring connection replaces the original alternate bending connection, so that the defects of large occupied space and long path of a bending part are overcome, and meanwhile, the bending process and the bending tool are also omitted, and the production process is simplified; the utility model discloses contrast and current flat wire winding motor, under the same condition of the flat wire sectional area of guaranteeing every looks, got rid of taking of coating with space gap, reduced stator core's size to reduce the material cost of motor.
Drawings
Fig. 1 is a schematic cross-sectional view of a motor stator according to the present invention;
fig. 2 is a schematic side view of the motor stator of the present invention;
fig. 3 is a structural plan view of the motor stator of the present invention;
FIG. 4 is a schematic structural diagram of a part of the stator core, the flat copper wire and the copper ring according to an embodiment of the present invention;
FIG. 5 is a schematic view of the connection between the flat copper wire portion and the copper ring according to an embodiment of the present invention;
in the figure: 1. a stator core; 11. a stator slot; 2. a flat wire; 21. a welding point; 22. a first phase conductor slot; 23. a second phase conductor slot; 24. a third phase conductor slot; 31. a first phase guide ring; 32. a first phase outgoing line; 41. a second conductive ring; 42. a second phase outgoing line; 51. a third phase guide ring; 52. and a third phase outgoing line.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1 and fig. 2, a new energy motor stator comprises a stator core 1 including 3n stator slots 11, and 3n flat wires 2, wherein each flat wire 2 is correspondingly embedded in one stator slot 11 in a matching manner; all the flat wires 2 are divided into three groups on average, two ends of the n flat wires 2 of the first group are respectively connected with a first phase guide ring 31, two ends of the n flat wires 2 of the second group are respectively connected with a second phase guide ring 41, and two ends of the n flat wires 2 of the third group are respectively connected with a third phase guide ring 51. The flat wire 2 is welded with the three kinds of guide rings at the corresponding welding points 21 to complete the connection.
A second group of flat wires 2 and a third group of flat wires 2 are arranged between two adjacent flat wires 2 of the first group; a third group of flat wires 2 and a first group of flat wires 2 are arranged between two adjacent flat wires 2 of the second group; a first group of flat wires 2 and a second group of flat wires 2 are arranged between two adjacent flat wires 2 of the third group. All of the flat wires 2 are numbered 1, 2, \8230;, 3n in clockwise order, then the flat wires 2 numbered 3i-2 all belong to a first group, the flat wires 2 numbered 3i-1 all belong to a second group, and the flat wires 2 numbered 3i all belong to a third group, where i =1, 2, \8230;, n.
As shown in fig. 3, a first phase lead-out line 32 is connected to the first phase guide ring 31; the second phase lead wire 42 is connected to the second phase guide ring 41; a third phase outgoing line 52 is connected to the third phase guide ring 51.
The inner diameter of the first phase guide ring 31 is larger than the outer diameter of the second phase guide ring 41; the inner diameter of the second phase guide ring 41 is larger than the outer diameter of the third phase guide ring 51; the heights of the first phase guide ring 31, the second phase guide ring 41 and the third phase guide ring 51 are sequentially increased and arranged from low to high; the heights of the first phase guide ring 31, the second phase guide ring 41, and the third phase guide ring 51 may be sequentially decreased, and arranged from high to low.
As shown in fig. 4 and 5, the flat wires 2 of the second group are provided at both ends with second phase wire grooves 23 connected to the second phase guide rings 41, and a space for accommodating the first phase guide rings 31 is reserved; the flat wires 2 of the third group are provided at both ends with third phase wire grooves 24 connected to third phase guide rings 51, and a space is reserved for accommodating the first phase guide ring 31 and the second phase guide ring 41. The two ends of the flat wires 2 of the first group are provided with first phase wire grooves 22 connected with the first phase guide ring 31, and the shape of the first phase wire grooves 22 is matched with the shape of the first phase guide ring 31.
The flat conductor 2 is wrapped with insulating paper, and the flat conductor 2 wrapped with the insulating paper is in interference fit connection with the stator slot 11; the flat wire is a flat copper wire. The first phase guide ring 31, the second phase guide ring 41 and the third phase guide ring 51 are coated with insulating varnish on the outer sides; the first phase guide ring 31, the second phase guide ring 41, and the third phase guide ring 51 are all copper rings.
The utility model adopts the jogging of the single flat wire with the cross section shape matched with the cross section shape of the stator slot and the stator slot, and uses the single flat wire to replace a plurality of wire windings, thus improving the slot fullness rate under the condition of solving the space gap existing among a plurality of wires, and the slot fullness rate can reach more than ninety-five percent; the flat wire is divided into three groups, each group corresponds to one phase of three UVW phases, and the original inter-phase bending connection is replaced by the guide ring connection, so that the height of the winding in the stator can be effectively reduced by about sixty percent, and the energy loss of the motor caused by heating is reduced.
In the utility model, the 3n flat wires are rotationally symmetrical by the central axis of the stator core, and the included angles between two adjacent flat wires in the same group are unified to be 120/n degrees; the n flat wires in the first group are rotated by 40/n degrees in the clockwise direction or the anticlockwise direction to be the positions of the n flat wires in the second group; the n flat wires in the first group are rotated by 40/n degrees along the counterclockwise direction or the clockwise direction to be the positions of the n flat wires in the third group; this symmetrical arrangement ensures stability of the magnetic field and a balance of the electrical potential.
The utility model discloses well three kinds of lead-out wires correspond the UVW three-phase, connect the lead-out wire on the guide ring and can make things convenient for the input/output connection of motor, and the coating in the lead-out wire outside has insulating varnish to carry out insulation treatment simultaneously.
The utility model discloses in from motor stator's circular cross section direction, first looks lead ring is in the position of outer lane, and the third phase is led the ring and is in the position of inner circle, and the second is led the ring and is in between all the other double-phase lead rings, and the difference between the external diameter of first looks lead ring and the internal diameter of third phase lead ring should be less than or equal to flat wire along the radial length of stator core to be connected of flat wire and lead ring.
In the utility model, in order to connect the three guide rings with the outside through the three-phase lead-out wires, the three guide rings can be set to different heights relative to the two ends of the flat wire; the first phase guide ring, the second phase guide ring and the third phase guide ring can be arranged from high to low or from low to high from the outer side to the inner side, and the first phase guide ring, the second phase guide ring and the third phase guide ring can be more conveniently welded and connected with the flat wire when being arranged from low to high.
The second phase guide groove arranged in the utility model comprises a space for limiting the position of the second phase guide ring and welding, so that the upper surface of the second phase guide ring is flush with the end surface of the flat wire of the second group, and meanwhile, the second phase guide groove is also provided with a space for accommodating the first phase guide ring, thereby avoiding the contact between the first phase guide ring and the flat wire of the second group; the third phase lead groove is arranged in the same purpose as the second phase lead groove, so that the first phase lead ring and the second phase lead ring are prevented from being contacted with the flat leads of the third group; furthermore, first phase conductor slots can be provided at both ends of the flat conductors of the first group for accommodating the positions defining the first phase conductor loops; the three guide rings are positioned at different heights by arranging the wire grooves at different heights.
In the utility model, the outside of the flat wire is wrapped with the insulating paper for insulation, and the interference connection between the flat wire and the stator slot can avoid the loose falling of the flat wire after being connected to the motor stator, thereby ensuring the stability and safety of the motor stator; different metal conductors can be selected according to actual needs by the flat wire, and flat copper wires are preferably selected in actual life.
After the three guide rings are welded with the flat wire, the three guide rings can be immersed in insulating liquid to be coated with insulating paint for insulation, so that the problems of interference, breakdown, short circuit or fusing and the like in the working process of the motor can be avoided, and the safety is ensured; meanwhile, the guide ring can also be a copper ring made of a metal copper material, so that the guide ring has good conductivity and low cost.
The above embodiments are further illustrated and described for the purposes of understanding, and not intended to limit the invention to any particular form, modification, equivalent arrangement, or improvements which may be made within the spirit and principles of the invention.
Claims (9)
1. A new energy motor stator comprises a stator core (1) with 3n stator slots (11), and is characterized by comprising 3n flat wires (2), wherein each flat wire (2) is correspondingly provided with one stator slot (11) which is matched and embedded; the flat wires (2) are averagely divided into three groups, two ends of the n flat wires (2) of the first group are respectively connected with a first phase guide ring (31), two ends of the n flat wires (2) of the second group are respectively connected with a second phase guide ring (41), and two ends of the n flat wires (2) of the third group are respectively connected with a third phase guide ring (51).
2. The new energy motor stator according to claim 1, wherein a second group of flat wires (2) and a third group of flat wires (2) are arranged between two adjacent flat wires (2) of the first group; a third group of flat wires (2) and a first group of flat wires (2) are arranged between two adjacent flat wires (2) of the second group.
3. The new energy motor stator according to claim 1 or 2, wherein a first phase lead-out line (32) is connected to the first phase guide ring (31); a second phase lead wire (42) is connected to the second phase guide ring (41); and a third phase outgoing line (52) is connected to the third phase guide ring (51).
4. The new energy motor stator according to claim 3, wherein the inner diameter of the first phase guide ring (31) is larger than the outer diameter of the second phase guide ring (41); the inner diameter of the second phase guide ring (41) is larger than the outer diameter of the third phase guide ring (51); the heights of the first phase guide ring (31), the second phase guide ring (41), and the third phase guide ring (51) are sequentially increased.
5. The new energy motor stator according to claim 3, wherein the inner diameter of the first phase guide ring (31) is larger than the outer diameter of the second phase guide ring (41); the inner diameter of the second phase guide ring (41) is larger than the outer diameter of the third phase guide ring (51); the heights of the first phase guide ring (31), the second phase guide ring (41), and the third phase guide ring (51) are sequentially reduced.
6. The new energy motor stator according to claim 1, 2, 4 or 5, characterized in that the second group of flat wires (2) is provided with second phase wire grooves (23) connected with the second phase guide ring (41) at two ends and a space for accommodating the first phase guide ring (31) is reserved; and third phase wire grooves (24) connected with a third phase guide ring (51) are arranged at two ends of the flat wire (2) of the third group, and spaces for accommodating the first phase guide ring (31) and the second phase guide ring (41) are reserved.
7. The new energy motor stator according to claim 6, wherein the first phase conductor groove (22) connected with the first phase conductor ring (31) is arranged at two ends of the first group of flat conductors (2), and the shape of the first phase conductor groove (22) is matched with that of the first phase conductor ring (31).
8. The new energy motor stator according to claim 1, 2, 4 or 5, characterized in that the flat conductor (2) is wrapped with insulating paper, and the flat conductor (2) wrapped with the insulating paper is in interference connection with the stator slot (11); the flat wire is a flat copper wire.
9. The new energy motor stator according to claim 1, 2, 4 or 5, wherein the first phase guide ring (31), the second phase guide ring (41) and the third phase guide ring (51) are coated with insulating varnish on the outer sides; the first phase guide ring (31), the second phase guide ring (41) and the third phase guide ring (51) are all copper rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222665610.6U CN218472875U (en) | 2022-10-10 | 2022-10-10 | New forms of energy motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222665610.6U CN218472875U (en) | 2022-10-10 | 2022-10-10 | New forms of energy motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218472875U true CN218472875U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222665610.6U Active CN218472875U (en) | 2022-10-10 | 2022-10-10 | New forms of energy motor stator |
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| Country | Link |
|---|---|
| CN (1) | CN218472875U (en) |
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2022
- 2022-10-10 CN CN202222665610.6U patent/CN218472875U/en active Active
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