CN115333273A - Coreless motor winding, manufacturing method thereof and motor with winding - Google Patents
Coreless motor winding, manufacturing method thereof and motor with winding Download PDFInfo
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- CN115333273A CN115333273A CN202211036353.8A CN202211036353A CN115333273A CN 115333273 A CN115333273 A CN 115333273A CN 202211036353 A CN202211036353 A CN 202211036353A CN 115333273 A CN115333273 A CN 115333273A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
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Abstract
The utility model relates to the field of motors, in particular to a coreless motor winding and a manufacturing method thereof, and a motor with the winding, wherein the coreless motor comprises a plurality of turns of coils, the winding comprises at least two sub-windings, the sub-windings comprise a connecting area and a working area, the diameter of the connecting area does not exceed the diameter of the working area, the working area comprises a first working section and a second working section, the connecting area at least comprises a filling section, and two ends of the filling section are respectively connected with the first working section and the second working section; and the first working section, the second working section and the filling section of each turn are not positioned on the same plane, the filling sections of different sub-windings have overlapping areas, the filling sections occupy the axial length and the radial space of the connecting area, and the axial length of the filling sections is small, so that the length of the working area is increased, and the performance of the motor is improved.
Description
Technical Field
The application relates to a motor, in particular to a coreless motor winding, a manufacturing method and a motor with the winding.
Background
The coreless motor is also called a coreless motor, has the advantages of electric energy loss, low rotational inertia, high mechanical energy and the like caused by no iron core, is the most important hollow cup motor which can be very small and has small size which can not be achieved by a common iron core motor, and is widely applied to the fields of medical appliances, industrial robots, aerospace and the like. The motor is made into a cylindrical hollow cup winding by using self-adhesive enameled wires, the winding can be placed on the stator side and the rotor side to provide a magnetic field, and the winding is generally of the following types: lap winding, skewed winding, and concentric winding. The overlapping of the ends of the existing windings causes a buildup of end thickness, thus exacerbating the thickness of the two ends of the winding, causing the thickness of the winding ends to be non-uniform in size with the thickness of the middle section. This phenomenon can lead to difficult installation of the windings and the stator, and in addition, this phenomenon can also lead to a reduction in the space utilization between the windings and the stator rotor, which in turn leads to a reduction in the number of winding conductors that can be placed by the motor, and finally leads to a reduction in the performance of the motor.
Patent CN106033913B introduces a winding structure for reducing the thickness of the end part of a multilayer coreless motor, which comprises a front end cover, a rear end cover, an outer winding outgoing line, an inner winding and an inner winding outgoing line, wherein the outer winding is connected with the outer winding outgoing line, the inner winding is connected with the inner winding outgoing line, the winding structure further comprises a winding framework with a variable aperture, the front end cover is connected with the rear end cover through the winding framework, and the outer winding and the inner winding are respectively wound on the winding framework and are positioned at different apertures; the technical defects of the scheme are as follows: through step winding skeleton or gradual change formula winding skeleton coiling winding for the tip of winding staggers, thereby has reduced the thickness of winding tip, but the coiling can increase the holistic length of winding like this, has reduced the whole shared proportion of working section at the winding, has reduced work efficiency, is unfavorable for the miniaturation simultaneously.
Therefore, there is an urgent need for those skilled in the art to solve the following problems: 1. the problem of reduced space utilization rate caused by large thickness or large length of the end part of the winding; 2. the end part of the winding is long, so that the working efficiency of the winding is reduced due to the reduction of the proportion of the working section.
Disclosure of Invention
The present application has been made in view of the above and other more general considerations.
The hollow cup motor winding and the manufacturing method thereof and the motor with the winding are provided, aiming at solving the problem of reduced space utilization rate caused by large thickness or large length of the end part of the winding and the problem of reduced working efficiency caused by reduced proportion of the working section due to large length of the end part of the winding.
According to one aspect of the application, a coreless motor winding is provided and comprises a plurality of turns of coils, the winding comprises at least two sub-windings, each sub-winding comprises a connection area and a working area, the diameter of the connection area does not exceed the diameter of the working area, the working area comprises a first working section and a second working section, the connection area at least comprises a filling section, and two ends of the filling section are respectively connected with the first working section and the second working section; and the first working section, the second working section and the filling section of each turn are not positioned on the same plane, the filling section of each turn is not positioned on the cylindrical surface where the working area is positioned, and the filling sections of different sub-windings have overlapping areas.
According to one embodiment, after all sub-windings are spliced to form the winding, the combined working area is cylindrical or substantially cylindrical.
According to an embodiment, the diameter of the connection region is the largest diameter of the winding.
According to an embodiment, the sub-winding further comprises an overlap region, the overlap region being connected with the working region; and the axial length of the connection zone is less than the axial length of the lap zone.
According to an embodiment, the filling section comprises a transition unit and a bending unit, two ends of the transition unit are respectively connected with the first working section and the bending unit, and two ends of the bending unit are respectively connected with the second working section and the transition unit; and an axial length of the transition unit is an axial length of the connection region.
According to an embodiment, the filling segment is three-dimensional.
According to an embodiment, the transition unit of each turn is located on the same straight line with the first working section.
According to an embodiment, the bending unit is arranged rotationally around the centre of the winding; and the bending units are at least partially in a circular arc shape, and all the bending units are combined to form a reserved area in the center of the connecting area.
According to an embodiment, the reserved area is in the shape of a hole.
According to an embodiment, the bending unit comprises a first connection element and a second connection element, the first connection element is connected with the transition unit and the connection point of the first connection element and the transition unit is a first connection point, and the second connection element is connected with the second working section and the connection point of the second connection element and the second working section is a second connection point.
According to an embodiment, the first connection point and the second connection point have a height difference; and the position of the first connecting point is the extreme end part of the winding.
According to one embodiment, after all the sub-windings are combined, the first connecting pieces of the sub-windings and the second connecting pieces of other sub-windings have an overlapping area; and the first working section of the sub-winding and the second working section of the other sub-winding have an overlapping region.
According to an embodiment, the lap winding region comprises a diagonal segment, and the diagonal segment of each turn is substantially V-shaped after being unfolded.
According to an embodiment, the lap winding region is wound in a hexagonal winding oblique winding manner.
According to an embodiment, the lap zone presents a raised annular portion, the diameter of the lap zone being the maximum diameter of the winding.
According to an embodiment, the bending unit is arc-shaped as a whole; or the first connecting piece is in an arc shape, and the second connecting piece is in a linear shape.
According to an embodiment, when the curved unit is arc-shaped as a whole, the curved unit is wing-shaped on the projection surface.
According to one embodiment, the transition unit is linear, and the connection area is rectangular in cross section; or the transition unit is in an oblique line shape, and the connecting area is in a trapezoid shape in cross section; or, the transition unit is arc-shaped, and the connecting area is spherical in section.
According to an embodiment, the sub-winding comprises two connection areas, the connection areas being connected at both ends of the active area.
According to an embodiment, the current direction of the active area is parallel to the direction of the winding.
According to one embodiment, the coil of the coreless winding is wound mainly from enameled wire.
According to an embodiment, the winding comprises a first sub-winding, a second sub-winding and a third sub-winding, the three sub-windings are three-phase windings, and the three sub-windings are overlapped with each other.
According to one embodiment, the first and second active segments of each turn of the coil span a radius of π radians in the circumferential direction, not limited to a radius of π times.
According to one embodiment, the length of the padding segment of each turn of the coil is less than the length of the diagonal segment.
According to an embodiment, the winding comprises six sub-windings.
According to another aspect of the invention, there is provided a method of manufacturing a winding for a coreless motor, comprising the steps of:
step 1: manufacturing a winding die, wherein the winding die comprises a wire pressing head, a wire winding piece and a base;
step 2: winding a coil along the winding die to obtain a primary winding;
and 3, step 3: the primary winding is turned over along the primary rounding die to obtain a sub-winding;
and 4, step 4: and the sub-windings are spliced with each other on the circumference along the re-rounding die, and the second splicing pieces of the sub-windings are filled below the first splicing pieces of other sub-windings to form a revolving body to obtain a winding.
According to an embodiment, the primary windings obtained in step 2 have no overlapping area.
According to an embodiment, in step 3, the primary rounding die includes a first cylinder and a second cylinder, and the diameter of the first cylinder is larger than that of the second cylinder; one working section of the working area is firstly attached to the first cylinder of the primary rounding die, then the connecting area is turned over against the second cylinder, and the other working section of the working area is attached to the first cylinder; and partial oblique line segments of the lap winding region are overlapped.
According to an embodiment, the primary winding obtained in step 2 needs to be semi-thermally cured, so that the wires in the working area can be bonded with each other and have a certain degree of freedom, and then step 3 is performed.
According to an embodiment, the crimping head is "U" shaped.
According to an embodiment, the winding element comprises a first winding surface, a V-shaped surface and a second winding surface, and the length of the first winding surface is greater than that of the second winding surface.
According to one embodiment, the wire winding element is block-shaped overall.
According to another aspect of the invention, there is provided an electric machine with a coreless motor winding, comprising said coreless motor winding.
Compared with the prior art, the technical scheme of the application has the advantages that at least the following steps are included:
1. the winding of the hollow cup motor at the end part of the prior art has large volume, low space utilization rate and is not beneficial to the miniaturization of the motor, and the winding at the end part is a rhombic winding or an oblique winding or a hexagonal winding, the end part accounts for the whole winding, the actual working section is short, the output torque of the motor is not beneficial, the torque constant is small, the heat is large, and the technical scheme of the application avoids the problems; on the other hand, the working area comprises a first working section and a second working section, the connecting area comprises filling sections, after different sub-windings are combined, the filling sections are mutually overlapped, the space not occupied by the filling sections of other sub-windings is filled, and the winding end part which is originally axially arranged is arranged towards the radial direction, so that the axial length of the connecting area is reduced, the length of the working area is actually increased, the torque constant is increased, the heating condition is improved, and the working efficiency is improved.
2. According to the concept of the application, the sub-winding comprises a connecting area, a working area and a lap winding area, the filling section of the connecting area is three-dimensional, and the first working section, the second working section and the filling section of each turn are not located on the same plane, so that the connecting area can occupy radial space besides axial length, the axial length of the connecting area is smaller than that of the lap winding area, the overall length of the winding is reduced, or the axial occupation ratio of the working area in the winding is increased, and the efficiency of the coreless motor is improved.
3. According to one concept of the application, the filling section comprises a transition unit and a bending unit, and at least part of the bending unit is in an arc shape, so that a reserved area is formed in the center of the connection area after all the sub-windings are combined, the connection area cannot be completely filled with the bending unit, and the reserved area is in a hole shape, so that a rotation space is provided for a motor rotor.
4. According to one concept of the application, the bending unit comprises a first connecting piece and a second connecting piece, the first connecting piece is connected with the transition unit, the second connecting piece is connected with the second working section in a diameter mode, the transition unit is located at the end portion of the working area in the axial direction, the connecting point of the first connecting piece and the transition unit is located at the end portion of the winding more than the connecting point of the second connecting piece and the second working section, namely the first connecting point is located at the end portion of the winding more than the second connecting point, therefore, due to the height difference of the first connecting point and the second connecting point, the connecting areas of different sub-windings can be mutually overlapped after being combined, the first connecting piece is overlapped with the second connecting pieces of other sub-windings, the space utilization rate of the winding is improved, and meanwhile, the function of the connecting areas under the condition that the axial length of the connecting areas is not increased as much as possible is achieved.
Embodiments of the present application are capable of achieving other advantageous technical effects not listed individually, which other technical effects may be described in part below and are anticipated and understood by those of ordinary skill in the art upon reading the present application.
Drawings
The above-mentioned and other features and advantages of these embodiments, and the manner of attaining them, will become more apparent and the embodiments of the application will be better understood by reference to the following description taken in conjunction with the accompanying drawings, wherein:
fig. 1a and 1b are schematic diagrams of the overall structure of a coreless motor winding of the present invention.
Fig. 2a to 2c are schematic structural diagrams of the filling segment of the present invention and schematic structural diagrams of the transition unit, the bending unit, the first working segment, the second working segment and the diagonal segment of each turn of the coil.
Fig. 3a to 3c are schematic diagrams of the overall structure of the winding of the transition unit of the present invention in different shapes.
Fig. 4a and 4b are schematic diagrams of three sub-windings of the present invention overlapping each other after combination, wherein A, B, C of fig. 4a represent three-phase currents, respectively.
Fig. 5a to 5d show an embodiment of the sub-winding of the present invention without lap winding regions and with two connection regions.
Fig. 6a to 6g show a method of manufacturing a coreless motor winding according to the present invention.
Description of the reference numerals:
1-winding, 2-sub-winding, 21-first sub-winding, 22-second sub-winding, 23-third sub-winding, 3-connection region, 31-filling section, 32-transition unit, 33-bending unit, 331-first connection member, 332-second connection member, 333-first connection point, 334-second connection point, 335-reserved region, 4-working region, 41-first working section, 42-second working section, 5-lap winding region, 51-oblique line section, 6-primary winding, 7-winding mold, 71-wire pressing head, 72-winding member, 721-first winding surface, 722-V-shaped surface, 723-second winding surface, 73-base, 8-primary round mold, 81-first cylinder, 82-second cylinder, 9-secondary round mold.
Detailed Description
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims.
It is to be understood that the embodiments illustrated and described are not limited in application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The illustrated embodiments are capable of other embodiments and of being practiced or of being carried out in various ways. Examples are provided by way of explanation of the disclosed embodiments, not limitation. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present application without departing from the scope or spirit of the disclosure. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. Accordingly, the disclosure is intended to cover such modifications and variations as fall within the scope of the appended claims and their equivalents.
Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
The present application will be described in more detail below with reference to various embodiments and examples of several aspects of the application.
In the present application, the term "winding" is formed by splicing "sub-windings", which are obtained by performing a first rounding of a "primary winding".
In the context of the present application, it is,
example one
As shown in fig. 1a and 1b, a coreless motor winding according to an embodiment of the present application is illustrated, which includes a plurality of turns of coils, the winding 1 includes three sub-windings 2, the sub-windings 2 include a connection area 3 and a working area 4, the diameter of the connection area 3 does not exceed the diameter of the working area 4, the working area 4 includes a first working section 41 and a second working section 42, the connection area 3 includes at least a filling section 31, and two ends of the filling section 31 are respectively connected to the first working section 41 and the second working section 42; and the first working section 41, the second working section 42 and the filling section 31 of each turn are not located on the same plane, the filling section 31 of each turn is not located on the cylindrical surface where the working area 4 is located, and the filling sections 31 of different sub-windings 2 have overlapping areas.
In the first embodiment, the sub-winding 2 further includes an overlapping region 5, and the overlapping region 5 is connected to the working region 4; also, the axial length of the connecting zone 3 is smaller than the axial length of the lap zone 5, as shown in fig. 1 b.
In this embodiment, the filling segment 31 includes a transition unit 32 and a bending unit 33, two ends of the transition unit 32 are respectively connected to the first working segment 41 and the bending unit 33, and two ends of the bending unit 33 are respectively connected to the second working segment 42 and the transition unit 32; also, the axial length of the transition unit 32 is the axial length of the connection region 3, as shown in fig. 2 a.
In the first embodiment, the filling segment 31 is three-dimensional.
In the first embodiment, the bending unit 33 is rotatably disposed around the center of the winding 1; moreover, the bending units 33 are at least partially arc-shaped, and all the bending units 33 are combined to form a reserved area 335 at the center of the connecting area 3, and the reserved area 335 is hole-shaped, as shown in fig. 2 b.
In the first embodiment, the bending unit 33 includes a first connection element 331 and a second connection element 332, the first connection element 331 is connected to the transition unit 32 and the connection point of the first connection element and the transition unit is a first connection point 333, and the second connection element 332 is connected to the second working segment 42 and the connection point of the second connection element and the second working segment is a second connection point 334.
In the first embodiment, the first connection point 333 and the second connection point 334 have a height difference; the first connection point 333 is located at the outermost end of the winding 1.
In the first embodiment, after all the sub-windings 2 are combined, the first connecting piece 331 of the sub-winding 2 and the second connecting pieces 332 of other sub-windings 2 have an overlapping area, as shown in fig. 1a and 2 b; and, the first working segment 41 of the sub-winding 2 has an overlapping region with the second working segment 42 of the other sub-winding 2.
In the first embodiment, the lap winding region 5 includes a diagonal segment 51, and the diagonal segment 51 of each turn is substantially "V" shaped after being unfolded, as shown in fig. 2 c.
In the first embodiment, the first connecting piece 331 is linear, and the second connecting piece 332 is arc-shaped.
In the first embodiment, the transition unit 32 is linear, the transition unit 32 of each turn is located on the same straight line with the first working segment 41, and the connecting area 3 is rectangular in cross section, as shown in fig. 3 a; alternatively, the transition unit 32 is in the shape of a diagonal line, and the connecting region 3 is in the shape of a trapezoid in cross section, as shown in fig. 3 b; alternatively, the transition unit 32 has a circular arc shape, and the connecting section 3 has a spherical shape in cross section, as shown in fig. 3 c.
In the first embodiment, the current direction of the working area 4 is parallel to the direction of the winding 1.
In the first embodiment, the coil of the coreless winding 1 is mainly formed by winding an enameled wire.
In the first embodiment, the winding 1 includes a first sub-winding 21, a second sub-winding 22, and a third sub-winding 23, as shown in fig. 4a and 4b, the three sub-windings are three-phase windings, the three sub-windings 2 are overlapped with each other, and the winding 1 has two layers of working areas 4.
In the first embodiment, the first working segment 41 and the second working segment 42 of each turn of the coil span a radius of pi times in the circumferential direction, but are not limited to a radius of pi times, as shown in fig. 2 c.
In the first embodiment, the length of the padding section 31 of each turn of coil is smaller than the length of the diagonal section 51.
Example two
The second embodiment is substantially the same as the first embodiment except that the sub-winding 2 is not provided with the lap winding region 5.
As shown in fig. 5a to 5d, a coreless motor winding is illustrated, which includes a plurality of turns of coils, the winding 1 includes three sub-windings 2, the sub-windings 2 include a connection area 3 and a working area 4, the diameter of the connection area 3 does not exceed the diameter of the working area 4, the working area 4 includes a first working section 41 and a second working section 42, the connection area 3 at least includes a filling section 31, and two ends of the filling section 31 are respectively connected to the first working section 41 and the second working section 42; and the first working section 41, the second working section 42 and the filling section 31 of each turn are not located on the same plane, the filling section 31 of each turn is not located on the cylindrical surface where the working area 4 is located, and the filling sections 31 of different sub-windings 2 have overlapping areas.
In the second embodiment, the sub-winding 2 includes two connection areas 3, and the two connection areas 3 are respectively connected to two ends of the working area 4, as shown in fig. 5 c.
In the second embodiment, the bending unit 33 has a circular arc shape as a whole, as shown in fig. 5 d.
In the second embodiment, when the whole of the bending unit 33 is arc-shaped, the bending unit 33 is wing-shaped on the projection surface.
In this regard, the related configuration and concept of the second embodiment are similar to those of the first embodiment, and thus, the description thereof will not be repeated here.
EXAMPLE III
The invention relates to a manufacturing method of a coreless motor winding, which comprises the following steps:
step 1: manufacturing a winding die 7, wherein the winding die 7 comprises a wire pressing head 71, a winding piece 72 and a base 73, as shown in fig. 6a and 6 b;
step 2: winding the coil along the winding die 7 to obtain a primary winding 6, as shown in fig. 6c and 6 d;
and step 3: the primary winding 6 is turned over along the primary rounding die 8 to obtain a secondary winding 2, as shown in fig. 6 e;
and 4, step 4: the sub-windings 2 are spliced with each other on the circumference along the re-rounding die 9, and the second connecting pieces 332 of the sub-windings 2 are filled below the first connecting pieces 331 of other sub-windings 2 to form a rotator to obtain the winding 1, as shown in fig. 6f and 6 g.
In the third embodiment, the primary winding 6 obtained in step 2 has no overlapping area, as shown in fig. 6 d.
In the third embodiment, in the step 3, the primary rounding die 8 includes a first cylinder 81 and a second cylinder 82, and the diameter of the first cylinder 81 is greater than that of the second cylinder 82; one working section of the working area 4 is firstly attached to the first cylinder 81 of the primary rounding die 8, then the connecting area 3 is turned over against the second cylinder 82, and the other working section of the working area 4 is attached to the first cylinder 81; the partially inclined line segments 51 of the lap region 5 overlap each other.
In the third embodiment, the wire pressing head 71 is U-shaped.
In the third embodiment, the winding element 72 includes a first winding surface 721, a V-shaped surface 722 and a second winding surface 723, and the length of the first winding surface 721 is greater than the length of the second winding surface 723.
In the third embodiment, the wire winding member 72 is block-shaped as a whole.
Example four
A motor with a coreless motor winding comprises the coreless motor winding, and the motor manufactured by the winding 1 has better motor performance.
The foregoing description of several embodiments of the application has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the application to the precise configuration, configurations and/or steps disclosed, and obviously many modifications and variations are possible in light of the above teaching. It is intended that the scope of the invention and all equivalents be defined by the following claims.
Claims (15)
1. A coreless motor winding comprises a plurality of turns of coils, and is characterized in that: the winding comprises at least two sub-windings, each sub-winding comprises a connecting area and a working area, the diameter of each connecting area is not more than that of each working area, each working area comprises a first working section and a second working section, each connecting area at least comprises a filling section, and two ends of each filling section are respectively connected with the first working section and the second working section; and the first working section, the second working section and the filling section of each turn are not positioned on the same plane, the filling section of each turn is not positioned on the cylindrical surface where the working area is positioned, and the filling sections of different sub-windings have overlapping areas.
2. The coreless motor winding of claim 1, wherein: the sub-winding also comprises an overlapping and winding area, and the overlapping and winding area is connected with the working area; and the axial length of the connecting region is smaller than the axial length of the lap region.
3. The coreless motor winding of claim 1, wherein: the filling section comprises a transition unit and a bending unit, two ends of the transition unit are respectively connected with the first working section and the bending unit, and two ends of the bending unit are respectively connected with the second working section and the transition unit; and an axial length of the transition unit is an axial length of the connection region.
4. A coreless motor winding as recited in claim 3, wherein: the bending unit is rotatably arranged around the center of the winding; and the bending units are at least partially in a circular arc shape, and all the bending units are combined to form a reserved area in the center of the connecting area.
5. A coreless motor winding as recited in claim 3, wherein: the bending unit comprises a first connecting piece and a second connecting piece, the first connecting piece is connected with the transition unit, the connecting point of the first connecting piece and the transition unit is a first connecting point, and the second connecting piece is connected with the second working section, and the connecting point of the second connecting piece and the second working section is a second connecting point.
6. The coreless motor winding of claim 5, wherein: the first connecting point and the second connecting point have a height difference; and the position of the first connecting point is the extreme end part of the winding.
7. The coreless motor winding of claim 5, wherein: after all the sub-windings are combined, the first connecting pieces of the sub-windings and the second connecting pieces of other sub-windings have an overlapping area; and the first working section of the sub-winding and the second working section of the other sub-winding have an overlapping region.
8. The coreless motor winding of claim 2, wherein: the lap winding region comprises oblique line segments, and the oblique line segments of each turn are approximately V-shaped after being unfolded.
9. The coreless motor winding of claim 5, wherein: the bending unit is integrally in an arc shape; or the first connecting piece is in a circular arc shape, and the second connecting piece is in a linear shape.
10. The coreless motor winding of claim 5, wherein: the transition unit is linear, and the connecting area is rectangular in section; or the transition unit is in an oblique line shape, and the connecting area is in a trapezoid shape in cross section; alternatively, the transition unit has an arc shape, and the joint region has a spherical shape in cross section.
11. The coreless motor winding of claim 1, wherein: the sub-winding comprises two connection areas, and the two ends of the working area are both connected with the connection areas.
12. A method of manufacturing a winding for a coreless motor as claimed in any one of claims 1 to 11, including the steps of:
step 1: manufacturing a winding die, wherein the winding die comprises a wire pressing head, a wire winding piece and a base;
step 2: winding a coil along the winding die to obtain a primary winding;
and step 3: the primary winding is turned over along the primary rounding die to obtain a sub-winding;
and 4, step 4: and the sub-windings are spliced with each other on the circumference along the re-rounding die, and the second connecting pieces of the sub-windings are filled below the first connecting pieces of other sub-windings to form a revolving body to obtain the winding.
13. The manufacturing method according to claim 12, characterized in that: and (3) the primary winding obtained in the step (2) has no overlapping area.
14. The manufacturing method according to claim 12, characterized in that: in the step 3, the primary rounding die comprises a first cylinder and a second cylinder, and the diameter of the first cylinder is larger than that of the second cylinder; one working section of the working area is firstly attached to the first cylinder of the primary rounding die, then the connecting area is turned over against the second cylinder, and the other working section of the working area is attached to the first cylinder; and, the partial diagonal segments of the lap-wound area overlap.
15. An electrical machine with a coreless motor winding comprising a coreless motor winding as claimed in any one of claims 1 to 11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036353.8A CN115333273A (en) | 2022-08-28 | 2022-08-28 | Coreless motor winding, manufacturing method thereof and motor with winding |
| PCT/CN2023/115156 WO2024046247A1 (en) | 2022-08-28 | 2023-08-28 | Hollow-cup electric motor winding and manufacturing method therefor, and electric motor having hollow-cup electric motor winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036353.8A CN115333273A (en) | 2022-08-28 | 2022-08-28 | Coreless motor winding, manufacturing method thereof and motor with winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115333273A true CN115333273A (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211036353.8A Pending CN115333273A (en) | 2022-08-28 | 2022-08-28 | Coreless motor winding, manufacturing method thereof and motor with winding |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115333273A (en) |
| WO (1) | WO2024046247A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024046247A1 (en) * | 2022-08-28 | 2024-03-07 | 上海炫脉医疗科技有限公司 | Hollow-cup electric motor winding and manufacturing method therefor, and electric motor having hollow-cup electric motor winding |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5448003A (en) * | 1977-09-22 | 1979-04-16 | Kensuke Ikeda | Wave winding method of coreless motor |
| JP2015177598A (en) * | 2014-03-13 | 2015-10-05 | アイシン・エィ・ダブリュ株式会社 | Two-layer wound coil and manufacturing method of two-layer wound coil |
| EP3248272A1 (en) * | 2014-11-17 | 2017-11-29 | Faulhaber Minimotor SA | Air-gap winding |
| CN106033913B (en) * | 2015-03-19 | 2018-09-25 | 上海鸣志电器股份有限公司 | A kind of winding construction reducing multi-layer hollow cup motor end thickness |
| CN109687617B (en) * | 2017-10-18 | 2024-05-14 | 上海鸣志电器股份有限公司 | Hollow cup winding with axially segmented structure |
| CN108566010A (en) * | 2018-06-29 | 2018-09-21 | 重庆长基科技有限公司 | A kind of multipole hollow-cup motor loop construction and its winding method |
| CN212392726U (en) * | 2020-06-29 | 2021-01-22 | 惠州市三协磁电技术有限公司 | Stator coil structure of two-pair-pole coreless cup brushless motor of medical respirator |
| CN115333273A (en) * | 2022-08-28 | 2022-11-11 | 上海炫脉医疗科技有限公司 | Coreless motor winding, manufacturing method thereof and motor with winding |
-
2022
- 2022-08-28 CN CN202211036353.8A patent/CN115333273A/en active Pending
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2023
- 2023-08-28 WO PCT/CN2023/115156 patent/WO2024046247A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024046247A1 (en) * | 2022-08-28 | 2024-03-07 | 上海炫脉医疗科技有限公司 | Hollow-cup electric motor winding and manufacturing method therefor, and electric motor having hollow-cup electric motor winding |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024046247A1 (en) | 2024-03-07 |
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