CN217063428U - Novel stator module - Google Patents
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- CN217063428U CN217063428U CN202220033949.1U CN202220033949U CN217063428U CN 217063428 U CN217063428 U CN 217063428U CN 202220033949 U CN202220033949 U CN 202220033949U CN 217063428 U CN217063428 U CN 217063428U
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a novel stator assembly, which comprises a stator core and a three-phase stator winding, wherein the three-phase stator winding is wound in the stator core, S stator grooves which are uniformly distributed are arranged on the stator core, and the stator grooves are equally divided into N groove layers from inside to outside along the radial direction of the stator core; each phase of stator winding comprises q parallel sub-windings, each sub-winding is composed of a plurality of hairpin coils with different pitches, and the hairpin coils of each sub-winding traverse N slot layers in different stator slots. On one hand, the scheme avoids the circulation formed between q sub-windings, thereby greatly reducing the additional alternating current copper consumption under high frequency, being suitable for the motor, improving the efficiency of the motor when in high-speed operation, avoiding local over-temperature of the windings and prolonging the service life of the motor; on the other hand, the types of the hairpin coils are reduced, the number of manufacturing dies is reduced, the production cost is reduced, and the processing and manufacturing efficiency is improved; meanwhile, a cooling structure is arranged, and heat dissipation and cooling of the stator end winding are facilitated.
Description
Technical Field
The utility model relates to a new energy automobile technical field, concretely relates to novel stator module.
Background
With the vigorous popularization of new energy automobiles, new energy electric automobiles are increasingly popularized, and the market demand on the performance of power systems of the electric automobiles is continuously improved. The main drive motor is a power output component of a power system, and as one of the most core components of an electric automobile, the performance index requirements of the main drive motor are higher and higher, such as high power density and torque density, small volume and light weight. With the development of the flat wire process, the motor of the electric automobile gradually adopts a flat wire winding, and the flat wire winding can improve the slot filling factor of the stator, so that the power density, the efficiency and the heat conductivity of the motor are further improved. In the prior art, more than 90% of stator windings are formed by the way that the number of slots of each pole and each phase is not less than 2, and when branches of each phase of the stator windings are connected, the distortion direction of the outer end part of a coil slot or the distance between the distortion slots is inconsistent, so that the used hairpin coils are more in variety, the manufacturing process is complex, the forming is difficult, the production cost is high, and the processing efficiency is low. In addition, aiming at the complex structure of the motor winding, potential imbalance easily occurs between the branches of the same-phase winding, so that circulation current is formed between the branches, and the efficiency and temperature rise of the motor are influenced. For example, chinese patent grant publication no: CN212850004U discloses a stator module, a motor and an electric vehicle, which adopts axial rotational symmetry of three branches around a stator core, in each slot layer of the same stator slot, the magnetic field distribution of the three branches of the same-phase winding is the same, the potentials of the three branches are balanced, but the incoming line and the outgoing line of the three branches of the same-phase winding are far apart, a large number of bus bars and bus bars are needed to connect the branches and neutral points of each phase winding, the manufacturing process is complex, the production cost is high, and the phase resistance value is larger and the star point welding height is high, thereby reducing the motor efficiency and increasing the volume. In summary, the current windings of flat-wire motors mainly have the following problems: the used hairpin coils are more in types and high in manufacturing cost; the number of the bus bars and the bus bars for connecting the branch circuits and the neutral points of the windings of each phase is large, and the arrangement mode is complex; potential imbalance easily occurs between the branches of the same-phase winding, and circulation current is easily formed between the branches, so that the motor is low in efficiency and high in temperature.
In addition, the driving motor for the electric automobile pursues high power/torque density and small and light weight as much as possible, so that the electromagnetic load and the thermal load selected during the design of the motor are obviously higher than those of a common motor, the loss and the heat productivity of the unit volume of the motor are obviously increased, the temperature rise of the motor is higher, particularly the air is arranged between the end winding of the stator and the shell, the thermal resistance is higher, and the temperature of the end winding is higher than that of the winding in the stator core.
Disclosure of Invention
The utility model mainly aims to solve the problems of the prior art that the flat wire motor winding uses a plurality of types of hairpin coils and has high manufacturing cost; the arrangement mode is complex; circulation is easily formed among the branches; the problem that the temperature of a winding at the end part of the stator is higher is solved, and the novel stator assembly is provided, has low production cost and simple manufacturing process, and can reduce the circulation between the branches; the cooling structure is arranged, so that the heat dissipation of the stator end winding is facilitated; the motor is suitable for the motor, the efficiency of the motor in high-speed operation can be improved, and the service life of the motor is prolonged.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a novel stator assembly comprises a three-phase stator winding and a stator core, wherein the three-phase stator winding is wound in the stator core, S stator slots are arranged on the stator core, and the stator slots are uniformly divided into N slot layers from inside to outside along the radial direction of the stator core; each phase of stator winding consists of q parallel sub-windings, each sub-winding comprises a plurality of hairpin coils with different pitches, and the hairpin coils of each sub-winding traverse N slot layers in different stator slots. The utility model provides a novel stator module, including stator core and three-phase stator winding, three-phase stator winding adopts the ripples to wind or lap the mode of winding in the stator core of winding, is equipped with S evenly distributed' S stator slot on the stator core, and S is the positive integer. Equally dividing the stator slot into N slot layers from inside to outside along the radial direction of the stator core, wherein N is an even number, the direction close to the inner side of the stator core is the inside, and the slot layer closest to the inner side of the stator core is the innermost slot layer; the direction close to the outer side of the stator core is outer, and the slot layer closest to the outer side of the stator core is the outermost slot layer. Each phase of stator winding comprises q parallel sub-windings, q is an odd number, voltage outgoing lines of the q sub-windings are arranged on the outermost slot layer or the innermost slot layer of the adjacent q stator slots, neutral point outgoing lines of the q sub-windings are arranged on the outermost slot layer or the innermost slot layer of the adjacent q stator slots which are spaced from the voltage outgoing lines by 2q, and the neutral point outgoing lines and the voltage outgoing lines are arranged on the same slot layer. Each sub-windingThe group comprises a plurality of hairpin coils with different pitches, each hairpin coil comprises two straightways arranged in parallel and a connecting section for connecting the two straightways, the pitch refers to the number of stator slots spanned by the two straightways arranged in parallel of the hairpin coil, the hairpin coil comprises a long-distance hairpin coil and a short-distance hairpin coil, and the pitch of the long-distance hairpin coil comprises
And
two types are adopted; the pitch of the short hairpin consists of
And
two kinds of coils in the same sub-winding
And
the hairpin coils with the two pitches do not exist at the same time, and the hairpin coils with the four pitches in the same phase of stator winding exist at the same time; in the same phase stator winding
And
the hairpin coils of both pitches are in the outermost or innermost slot layers of the stator slots, and only one hairpin coil per sub-winding
Pitched hair-pin coils or
A pitched hairpin. Is fixed at the same timeThe hairpin coils of (q-1) sub-windings of the same-phase stator winding exist in the N slot layers of the sub-slots at the same time, and the hairpin coils of the same sub-winding are in the same stator slot
In an even slot level or an odd slot level. The hairpin coil of each sub-winding traverses N slot layers in different stator slots, so that the q sub-windings eliminate potential phase differences caused by positions in the stator slots, and further the counter potential inductances of the q sub-windings are the same; the resistances of the sub-branches are made equal by adjusting the neutral point connection length of the sub-branches, and the currents through the q sub-windings are also made equal. Through the technical scheme, on one hand, the circulation formed between the q sub-windings is avoided, so that the additional alternating current copper consumption under high frequency is greatly reduced, the efficiency of the motor in high-speed operation is improved, the local over-temperature of the windings is avoided, and the service life of the motor is prolonged; on the other hand, the types of the hairpin coils are reduced, the number of manufacturing dies is reduced, the production cost is reduced, and the processing and manufacturing efficiency is improved; meanwhile, the voltage outgoing line and the neutral point outgoing line of each sub-winding are arranged on the outermost slot layer or the innermost slot layer of the stator slot, and the voltage outgoing line and the neutral point outgoing line are arranged on the same slot layer, so that the arrangement mode is simple, and the welding assembly efficiency is convenient to improve. The neutral point outgoing line of the three-phase stator winding can be welded on the same bus bar, or the neutral point outgoing line of the same-phase stator winding is welded on the same bus bar, so that the corresponding bus bars with the neutral point outgoing lines of the three-phase stator winding can be one or three, the arrangement mode is simple, and the manufacturing process is simple.
Preferably, the stator assembly further comprises a cooling structure. The driving motor for the electric automobile pursues high power/torque density and small and light weight as much as possible, so that the electromagnetic load and the thermal load selected during the design of the motor are obviously higher than those of a common motor, the unit volume loss and the heat productivity of the motor are obviously increased, the temperature rise of the motor is higher, particularly the air is arranged between the end winding and the shell of the stator end winding, the thermal resistance is higher, and the temperature of the end winding is higher than that of the winding in the stator iron core. In order to solve the problem, the cooling structure is arranged at the end part of the stator core of the device, and the cooling structure is beneficial to the heat dissipation of the end winding of the stator.
Preferably, the cooling structure comprises a cooling pipeline arranged at the end part of the stator core, and the cooling pipeline is an annular pipeline; and a coolant is filled in the cooling pipeline. The cooling line is generally an annular line located at either end of the stator core. In stator module, cooling pipeline and stator end winding butt to set up in stator end winding's radial outside, radial inside or radial both sides, the coolant passes through in the cooling pipeline, makes most stator end winding heat pass through the cooling pipeline cooling, realizes stator end winding cooling.
Preferably, the hairpin coil includes two straight line segments and a connecting segment, the two straight line segments are arranged in parallel, and the connecting segment is used for connecting the two straight line segments. According to the scheme, each sub-winding comprises a plurality of hairpin coils with different pitches, each hairpin coil comprises two straight-line segments arranged in parallel and a connecting segment for connecting the two straight-line segments, and the pitch refers to the number of stator slots spanned by the two straight-line segments arranged in parallel of the hairpin coil.
Preferably, the hairpin coils include a short-distance hairpin coil and a long-distance hairpin coil, and the short-distance hairpin coil has two pitches, namely, the two pitches are respectively
And
the long-distance hairpin coil has two pitches which are respectively
And
the card sending coil comprises a long-distance card sending coil and a short-distance card sending coil, wherein the long-distance card sending coil comprises
Pitched hairpin coil and
a pitch hairpin; the short distance hairpin loop includes
Pitched hairpin coil and
a pitched hairpin. Wherein S represents the number of stator slots, and is a positive integer; p represents half of the number of rotor poles, and P is a positive integer.
Preferably, the hairpin coils of the same sub-winding are not simultaneously present
And
two pitches; coexistence in hairpin coils of same phase stator winding
And
four pitches. In the same sub-winding in the scheme
And
the hairpin coils with two pitches do not exist simultaneously and are arranged in the same phase stator winding
And
four pitches of hairpin coils exist simultaneously, which makes q sub-branches eliminate the problem caused by different slot positionsOne of the conditions for the phase difference. In the same phase stator winding
Pitch hairpin and
the hairpin coils of the pitch are all at the outermost slot layer or the innermost slot layer of the stator slots, and only one hairpin coil is arranged in each sub-winding
Pitched hair-pin coils or
A pitched hairpin.
Preferably, the voltage outgoing lines of the q parallel sub-windings are led out from the outermost slot layer of the q adjacent stator slots, the neutral point outgoing lines of the q parallel sub-windings are led out from the outermost slot layer of the q adjacent stator slots, and the stator slot group where the voltage outgoing lines are located and the stator slot group where the neutral point outgoing lines are located are spaced by 2q stator slots. According to the scheme, the voltage outgoing lines of q sub-windings are arranged on the outermost slot layer of the q adjacent stator slots, and the neutral point outgoing lines of the q sub-windings are arranged on the outermost slot layer of the q adjacent stator slots which are spaced from the voltage outgoing lines by 2q stator slots. The arrangement mode is simple, and the welding assembly efficiency is convenient to improve.
Preferably, the voltage outgoing lines of the q parallel sub-windings are led out from the innermost slot layer of the q adjacent stator slots, the neutral point outgoing lines of the q parallel sub-windings are led out from the innermost slot layer of the q adjacent stator slots, and the stator slot group where the voltage outgoing lines are located and the stator slot group where the neutral point outgoing lines are located are spaced by 2q stator slots. In the scheme, the voltage outgoing lines of q sub-windings are arranged on the innermost slot layer of q adjacent stator slots, and the neutral point outgoing lines of the q sub-windings are arranged on the innermost slot layer of q adjacent stator slots which are spaced from the voltage outgoing lines by 2q stator slots. The arrangement mode is simple, and the welding assembly efficiency is convenient to improve.
Preferably, the N slot layers of the same stator slot exist simultaneouslyA hairpin coil of (q-1) sub-windings of the same-phase stator winding; with hairpin coils of the same sub-winding in the same stator slot
In a groove layer, the
The groove layers are odd groove layers or even groove layers.
Therefore, the utility model has the advantages that:
(1) circulation current formed among the q sub-windings is avoided, so that additional alternating current copper consumption under high frequency is greatly reduced, the method is suitable for the motor, the efficiency of the motor during high-speed operation can be improved, local over-temperature of the windings is avoided, and the service life of the motor is prolonged;
(2) the types of the hairpin coils are reduced, the number of manufacturing dies is reduced, the production cost is reduced, and the processing and manufacturing efficiency is improved;
(3) the heat dissipation of the stator end winding is facilitated;
(4) the arrangement mode is simple, and the welding assembly efficiency is convenient to improve;
(5) the manufacturing process is simple.
Drawings
Fig. 1 is a schematic structural diagram of a stator assembly in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a stator core in an embodiment of the present invention.
Figure 3 is an elevation view of a stator assembly in an embodiment of the invention.
Fig. 4 is a winding development view of the first U-phase branch in the embodiment of the present invention.
Fig. 5 is a winding development view of the second U-phase branch in the embodiment of the present invention.
Fig. 6 is a winding development view of the third U-phase branch in the embodiment of the present invention.
Fig. 7 is a winding development view of U, V, W three-phase windings in an embodiment of the present invention.
Fig. 8 is a schematic circuit diagram of U, V, W three-phase windings in the embodiment of the present invention.
1. Stator core 2, stator winding 3, stator slot.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-3, a novel stator assembly includes a stator core 1 and a three-phase stator winding 2, the three-phase stator winding 2 is wound in the stator core 1, S stator slots 3 are uniformly distributed on the stator core 1, and the stator slots 3 are equally divided into N slot layers from inside to outside along the radial direction of the stator core 1; each phase of stator winding 2 comprises q parallel sub-windings, each sub-winding is composed of a plurality of hairpin coils with different pitches, and the hairpin coils of each sub-winding traverse N slot layers in different stator slots 3. The utility model provides a novel stator module, including stator core 1 and three-phase stator winding 2, three-phase stator winding 2 adopts the ripples to wind or lap the mode of winding on stator core 1, is equipped with S individual evenly distributed' S stator slot 3 on stator core 1, and S is the positive integer. The stator slots 3 are equally divided into N slot layers from inside to outside along the radial direction of the stator core 1, wherein N is an even number, the direction close to the inner side of the stator core 1 is the inside, and the slot layer closest to the inner side of the stator core 1 is the innermost slot layer; the direction close to the outer side of the stator core 1 is outward, and the slot layer closest to the outer side of the stator core 1 is the outermost slot layer. Each phase stator winding 2 comprises q parallel sub-windings, q is an odd number, voltage leading-out wires of the q sub-windings are arranged on the outermost slot layer or the innermost slot layer of the adjacent q stator slots 3, neutral point leading-out wires of the q sub-windings are arranged on the outermost slot layer or the innermost slot layer of the adjacent q stator slots 3 which are spaced from the voltage leading-out wires by 2q stator slots 3, and the neutral point leading-out wires and the voltage leading-out wires are arranged on the same slot layer. Each sub-winding comprises a plurality of hairpin coils with different pitches, and each hairpin coil comprises a U-shaped hairpin coil and an I-shaped hairpin coil; each hairpin coil comprises two straight line segments arranged in parallel and a connecting segment for connecting the two straight line segments, the pitch refers to the number of stator slots spanned by the two straight line segments arranged in parallel of the hairpin coil, the hairpin coil comprises a long-distance hairpin coil and a short-distance hairpin coil, and the pitch of the long-distance hairpin coil comprises
And
two types are adopted; the pitch of the short hairpin includes
And
two kinds of in the same sub-winding
And
the hairpin coils with the two pitches do not exist at the same time, and the hairpin coils with the four pitches in the same phase of stator winding 2 exist at the same time; in the same phase stator winding 2
And
the hairpin coils of both pitches are in the outermost or innermost slot layer of the stator slots 3 and only one in each sub-winding
With hairpin loops or
A pitched hairpin. The hairpin coils of the (q-1) sub-windings of the same-phase stator winding 2 exist in the same N slot layers in the same stator slot 3 at the same time, and the hairpin coils of the same sub-winding are in the same stator slot 3
In the even number of groove layers or in the odd number of groove layers. The hairpin coil of each sub-winding traverses in different stator slots 3The N slot layers enable the q sub-windings to eliminate potential phase difference caused by positions in the stator slots 3, and further enable counter potential inductances of the q sub-windings to be the same; by adjusting the neutral point connection length of the sub-branches, the resistances of the sub-branches are made equal, and the currents through the q sub-windings are also made equal. The neutral point outgoing line of the three-phase stator winding 2 can be welded on the same bus bar, or the neutral point outgoing line of the same-phase stator winding 2 can be welded on the same bus bar, so that the corresponding bus bars of the neutral point outgoing lines of the three-phase stator winding 2 can be one or three.
In this embodiment, a 54-slot 6-pole motor is taken as an example, S is 54, P is 3, q is 3, and N is 6. The stator assembly is composed of three-phase stator windings 2 having phases different by 120 degrees in electrical angle, and the three-phase stator windings 2 are wound around a stator core 1. The groove number i (j) indicates the j-th groove layer in the i-th groove.
As shown in fig. 4, the first winding branch of the U-phase (i.e., the first U-phase branch) goes around from the position of U1, and finally goes out from the position of X1 to the center point of the three phases. The number of the slots through which the first winding branch is connected in series is: 7(6), (16), (5), (26), (6), (35), (5), (45), (6), (54), (5), (7), (4), (16), (3), (26), (4), (35), (3), (45), (4), (54), (3), (7), (2), (16), (1), (26), (2), (35), (1), (45), (2), (54), (1), (8), (53), (2), (43), (1), (34), (2), (27), (1), (18), (2), (27), (3), (18), (6), (34), (6), (27), (5), (27), (3), (18), (3), (18), (4), (5), (6), (45), (4), (54), (4), (5), (3), and (3).
As shown in fig. 5, the second winding branch of the U-phase (i.e., the second U-phase branch) enters from the position of U2, and finally exits from the position of X2 to the center point of the three phases. The number of the slots through which the second winding branch is connected in series is: 8(6), (17), (5) → 27(6), (36), (5) → 43(6) → 52(5) → 8(4) → 17(3) → 27(4) → 36(3) → 43(4) → 52(3) → 8(2) → 17(1) → 27(2) → 36(1) → 43(2) → 52(1) → 9(1) → 54(2) → 44(1) → 35(2) → 25(1) → 16(2) → 9(3) → 54(4) → 44(4) → 35) → 6 (35) → 25) (5) → 16 (16) → 25) → 16(4) → 25) → 16(6) → 16) → 4) → 9(5) → 54(6) → 35 (35) → 25) (5) → 25(5) → 25) → 16(5) → 36(4) → 36(4) → 54) → 54 → 36(4) → 54) → 54 → 6) → 6) → 36(6 → 4 → 6 → 36(6 → 4 → 36(4) → 6 → 4) ((5) → 6) → 4) → 6) ("4) → 4) (" 36(4) ("54) → 6) (5) (5) → 6) (" 4) (5) → 6) ("4) → 6) (" 4) → 6) ("4) → 6) (" 52): 6) → 6) ("52) (" 4) (.
As shown in fig. 6, the third winding branch of the U-phase (i.e., the third U-phase branch) enters from the position of U3, and finally exits from the position of X3 to the three-phase center point. The number of the slots through which the third winding branch is connected in series is as follows: 9(6), (18), (5) → 25(6), (34), (5) → 44(6), (53), (5) → 9(4) → 18(3) → 25(4) → 34(3) → 44(4) → 53(3) → 9(2) → 18(1) → 25(2) → 34(1) → 44(2) → 53(1) → 7(1) → 52(2) → 45(1) → 36(2) → 26(1) → 17(2) → 7(4) → 45 (36) → 6) → 45(6) → 36(6) → 26 (26) → 17(6) → 25) → 36(6) → 36) (6) → 36(6) → 26) (5) → 25) → 4) → 36(4) → 52) → 26(6) → 52(6) → 52(6) → 36(6) → 26(5) → 26).
The numbers of the starting slot and the ending slot corresponding to the three winding branches are distributed as follows: u1 for 7(6), X1 for 18 (6); u2 for 8(6) and X2 for 16 (6); u3 for 9(6) and X3 for 17 (6). As shown in fig. 8, U1, U2 and U3 are connected in parallel, and X1, X2 and X3 are connected in parallel, and finally connected by a bus bar to form a U-phase stator winding.
The hairpin coil pitch for the first winding leg was 7/8/10, the hairpin coil pitch for the second winding leg was 7/10/11, the hairpin coil pitch for the third winding leg was 7/8/10, and the weld end hairpin coil pitches were all 9. The total conductor length of the three winding branches is about 0.2% of resistance difference caused by the hairpin coils with the pitch of 8 and the pitch of 11, and in order to make up for the resistance difference, the lead lengths of the first winding branch and the third winding branch are adjusted when the U1, U2, U3, X1, X2 and X3 busbars are connected.
As shown in fig. 7, the remaining V-phase winding and W-phase winding are symmetrically and uniformly distributed on the circumference.
The device is provided with a cooling structure, the cooling structure comprises a cooling pipeline arranged at the end part of the stator core, and a coolant is filled in the cooling pipeline. The cooling line is generally an annular line located at either end of the stator core. In stator module, the cooling pipeline and stator end winding butt to set up in the radial outside of stator end winding, radial inside or radial both sides, the coolant passes through from the cooling pipeline, makes most stator end winding heat cool off through the cooling pipeline.
Claims (9)
1. A novel stator assembly comprises a three-phase stator winding and a stator core, wherein the three-phase stator winding is wound in the stator core, and is characterized in that S stator slots are arranged on the stator core, and are uniformly divided into N slot layers from inside to outside along the radial direction of the stator core; each phase of stator winding consists of q parallel sub-windings, each sub-winding comprises a plurality of hairpin coils with different pitches, and the hairpin coils of each sub-winding traverse N slot layers in different stator slots.
2. The novel stator assembly of claim 1 further comprising a cooling structure.
3. The novel stator assembly of claim 2 wherein said cooling structure includes a cooling line disposed at an end of said stator core, said cooling line being an annular line; and a coolant is filled in the cooling pipeline.
4. The novel stator assembly of claim 1 wherein said hairpin coil comprises two straight segments arranged in parallel and a connecting segment for connecting the two straight segments.
5. The novel stator assembly as claimed in claim 4, wherein the hairpin coils include short-range hairpin coils and long-range hairpin coils, and the short-range hairpin coils have two pitches, respectively
And
the long-distance hairpin coil has two pitches which are respectively
And
6. a new method as claimed in claim 5A stator assembly characterized in that the hairpin coils of the same sub-winding do not coexist simultaneously
And
two pitches; simultaneous presence in hairpin coils of stator windings of the same phase
And
four pitches.
7. The novel stator assembly according to claim 1, wherein the voltage outgoing lines of the q parallel sub-windings are led out from the outermost slot layer of the q adjacent stator slots, the neutral point outgoing lines of the q parallel sub-windings are led out from the outermost slot layer of the q adjacent stator slots, and the stator slot group where the voltage outgoing lines are located and the stator slot group where the neutral point outgoing lines are located are spaced by 2q stator slots.
8. The novel stator assembly according to claim 1 or 7, characterized in that the voltage outgoing lines of the q parallel sub-windings are led out from the innermost slot layer of the q adjacent stator slots, the neutral point outgoing lines of the q parallel sub-windings are led out from the innermost slot layer of the q adjacent stator slots, and the stator slot group where the voltage outgoing lines are located and the stator slot group where the neutral point outgoing lines are located are separated by 2q stator slots.
9. A novel stator assembly according to claim 1, characterized in that the same phase stator winding (q) is present simultaneously in N slot layers of the same stator slot-1) hairpin coils of sub-windings; with hairpin coils of the same sub-winding in the same stator slot
In a groove layer, the
The groove layers are odd groove layers or even groove layers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122770791 | 2021-11-12 | ||
| CN2021227707914 | 2021-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217063428U true CN217063428U (en) | 2022-07-26 |
Family
ID=82481623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220033949.1U Active CN217063428U (en) | 2021-11-12 | 2022-01-07 | Novel stator module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217063428U (en) |
-
2022
- 2022-01-07 CN CN202220033949.1U patent/CN217063428U/en active Active
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