CN212486211U - Transverse flux motor stator assembly and transverse flux motor - Google Patents
Transverse flux motor stator assembly and transverse flux motor Download PDFInfo
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- CN212486211U CN212486211U CN202021561797.XU CN202021561797U CN212486211U CN 212486211 U CN212486211 U CN 212486211U CN 202021561797 U CN202021561797 U CN 202021561797U CN 212486211 U CN212486211 U CN 212486211U
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Abstract
The utility model discloses a transverse flux motor stator module and transverse flux motor belongs to the motor field. The stator assembly comprises a plurality of phases of stator modules which are fixed together, wherein each phase of stator module comprises two annular stator toothed plates which are formed by laminating silicon steel sheets along the axial direction and a stator yoke ring which is made of soft magnetic composite materials. The stator yoke comprises a stator module and a stator yoke ring, wherein the stator module is provided with a plurality of stator teeth on the periphery of the stator toothed plate, the two stator toothed plates of the same-phase stator module are different in an electrical angle of 180 degrees, the stator yoke ring is located in the inner circles of the two stator toothed plates of the same-phase stator module and is fixedly connected with the two stator toothed plates, and a coil wound by taking the axial direction as the center is arranged between the two stator toothed plates of the same-phase stator module. The utility model discloses a three-dimensional magnetic circuit structure has been realized to the form that silicon steel sheet stator pinion rack and SMC stator yoke ring combined, and the preparation degree of difficulty is low, man-hour, with low costs, and the coil wire winding is convenient, can make more number of poles to stator magnetic circuit is difficult to the saturation, and the load capacity of motor is strong.
Description
Technical Field
The utility model relates to the field of electric machines, especially indicate a transverse flux motor stator module and transverse flux motor.
Background
The transverse flux motor is different from a radial flux motor and an axial flux motor which are in the traditional structures, and magnetic lines of force in the transverse flux motor are distributed in a three-dimensional mode and have high torque density. The outer rotor transverse flux motor is a structural form of a transverse flux motor and is generally used for a hub motor of an electric vehicle.
The traditional hub motor is generally an outer rotor radial flux motor, the rotor of the hub motor is convenient to manufacture, but the winding of the stator is difficult. Each phase of the outer rotor radial flux motor is provided with a plurality of grooves in the circumferential direction, and each groove is separately embedded with wires during coil winding, so that the winding mode is complex, and particularly when the number of poles of the motor is large, the winding difficulty can be greatly increased. For example, in the hub motor for the electric vehicle in which three-phase stator windings are arranged along the circumferential direction, the stator adopts a more-slot structure to be matched with the rotor, the complexity of stator winding is increased sharply due to the increase of the number of slots, the working hours of coil assembly are long, and mechanical equipment is expensive, so that the number of poles of the traditional outer rotor radial flux motor cannot be increased.
Because the magnetic circuit of the transverse flux motor is a three-dimensional structure, the traditional stator structure is generally formed by laminating silicon steel sheets, the silicon steel sheets are two-dimensional magnetic circuit materials, and the three-dimensional magnetic circuit structure manufactured by the two-dimensional magnetic circuit materials is difficult to realize.
In the prior art, a three-dimensional magnetic circuit is generally realized in a form of a segmented stator, for example, a stator mentioned in chinese patent document CN209692560U adopts a segmented structure, and positioning of modules and flatness after assembly are difficult problems, which have high assembly requirements, high manufacturing difficulty, increased working hours and cost, and great difficulty in making a large number of poles.
In addition, in the radial direction, the space closer to the center of the circle is smaller, and the space farther from the center of the circle is larger, so that the silicon steel sheets must be laminated along the circumferential direction in order to realize the three-dimensional magnetic circuit after the silicon steel sheets are laminated, and thus, the space close to the inner side in the radial direction is occupied and then a gap is formed at the position close to the outer side, so that the space utilization rate in the motor is not high, the magnetic flux path is narrow, the magnetic circuit is easy to saturate, and the load capacity of the motor is low.
And the other stators are formed by laminating silicon steel sheets, a three-dimensional magnetic circuit motor is manufactured by pure two-dimensional magnetic circuit materials, the manufacturing process is complex, and the whole stator needs to be encapsulated and fixed. And in order to ensure the realization of a three-dimensional magnetic circuit, the stator yoke part adopts a method of splicing silicon steel sheets along the circumferential direction. The motor stator yoke manufactured by the method has a complex structure, a narrow magnetic flux path and a very easily saturated magnetic circuit, and the load capacity of the motor is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a transverse flux motor stator module and transverse flux motor, the utility model discloses a three-dimensional magnetic circuit structure has been realized with the form that SMC stator yoke ring combined to silicon steel sheet stator pinion rack, and the preparation degree of difficulty is low, man-hour, with low costs, and the coil wire winding is convenient, can make more number of poles.
The utility model provides a technical scheme as follows:
the utility model provides a transverse flux motor stator module, is including fixed heterogeneous stator module together, and every looks stator module includes two annular stator toothed plate that form and a stator yoke ring of being made by soft-magnetic composite are folded along the axial by the silicon steel sheet, wherein:
the stator yoke comprises a stator module and a stator yoke ring, wherein the stator module is provided with a plurality of stator teeth on the periphery of the stator toothed plate, the two stator toothed plates of the same-phase stator module are different in an electrical angle of 180 degrees, the stator yoke ring is located in the inner circles of the two stator toothed plates of the same-phase stator module and is fixedly connected with the two stator toothed plates, and a coil wound by taking the axial direction as the center is arranged between the two stator toothed plates of the same-phase stator module.
Furthermore, an annular step bulge is arranged on the outer surface of the stator yoke ring, a positioning groove is formed in the outer surface of the stator yoke ring, and an inward positioning bulge is arranged on the inner circle of the stator toothed plate.
Further, insulating materials are arranged between the coil and the stator toothed plate and between the coil and the stator yoke ring.
Furthermore, a wire outlet hole is formed in the stator yoke ring.
Further, the contact surface department of stator pinion rack and stator yoke ring has seted up the bolt hole, the bolt hole is including being located first half hole on the stator pinion rack and being located the second half hole on the stator yoke ring, the central angle in first half hole is greater than 180, the central angle in second half hole is less than 180.
Further, adjacent two-phase stator modules are spaced by a gasket.
Further, be located on the stator pinion rack first half hole department is provided with the gasket constant head tank, be located on the stator yoke ring second half hole department is provided with the gasket mounting groove, the gasket includes the gasket body and with gasket body vertically locating plate, the gasket body sets up in the gasket mounting groove, the locating plate sets up in the gasket constant head tank.
Furthermore, the multiphase stator modules are three phases, and the difference between two adjacent stator modules is 120 degrees in electrical angle.
Furthermore, silicon steel sheets are laminated and pressed into a stator toothed plate in a welding mode, and a slotted hole is formed in the stator toothed plate.
A transverse-flux electric machine includes the transverse-flux electric machine stator assembly described above.
The utility model discloses following beneficial effect has:
1. the three-dimensional magnetic circuit structure is realized through the form that silicon steel sheet stator pinion rack and SMC stator yoke ring combine, need not set up the segmentation stator, also need not fold through the silicon steel sheet and press and obtain stator yoke portion, and it is not high to the assembly requirement, and the preparation degree of difficulty is low, man-hour, with low costs, can make more number of poles to the stator magnetic circuit of this kind of structure is difficult to the saturation, and the load capacity of motor is strong.
2. The structure of two silicon steel sheet stator toothed plates and the SMC stator yoke ring enables the stator winding of the motor to be completed by one coil per phase, and the problem of difficult winding of the traditional radial magnetic field motor is avoided. Simultaneously, the number of poles of motor increases can not influence the wire winding, if need increase the number of poles of motor, only need on the stator pinion rack directly increase the stator tooth the quantity can, therefore the motor can be designed into the winding space when more number of poles is not influenced, can increase the number of poles of motor as far as possible, promotes motor torque, consequently is particularly useful for the occasion of the big moment of torsion of low-speed.
Drawings
Fig. 1 is a perspective view of a transverse flux motor stator assembly of the present invention;
fig. 2 is an exploded view of a transverse flux motor stator assembly of the present invention;
FIG. 3 is a perspective view of a phase stator module;
FIG. 4 is an exploded view of a phase stator module;
figure 5 is a perspective view of the stator tooth plate;
fig. 6 is a perspective view of the stator yoke ring.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model provides a transverse flux motor stator module 200, as shown in fig. 1-6, it includes fixed heterogeneous stator module 201 together, and every looks stator module 201 includes two by silicon steel sheet along the axial fold press the ring shape stator pinion rack 202 that forms and one by soft-magnetic composite material (like SMC, ferrite ferrosilicon, ferrosilicon aluminium, indisputable nickel etc.) the stator yoke ring 203 of making, wherein:
be provided with a plurality of stator tooth 204 in the periphery of stator pinion rack 202, the utility model discloses do not restrict the concrete mode that sets up of stator tooth, in one of them example, a plurality of recess has been seted up in the periphery of stator pinion rack, forms the stator tooth between two adjacent recesses.
Two stator tooth plates 202 of the same phase stator module 201 have a 180 ° electrical angle difference, and the number of poles of the rotor is 2 times the number of stator teeth on each stator tooth plate.
The stator yoke ring 203 is located in the inner circles of the two stator tooth plates 202 of the same-phase stator module 201 and is fixedly connected with the two stator tooth plates 202, a coil 205 wound by taking the axial direction as the center is arranged between the two stator tooth plates 202 of the same-phase stator module 201, and the stator tooth plates, the stator yoke ring and the coil are combined together to form one phase of the motor.
The utility model discloses in, two stator pinion racks under the same phase form the stator magnetic circuit including a stator yoke ring, and specific stator magnetic circuit is as follows: the stator toothed plate formed by laminating silicon steel sheets along the axial direction realizes radial magnetic conduction, so that a magnetic field generated by a permanent magnet on the outer rotor is radially and inwardly propagated to a stator yoke ring made of soft magnetic composite material from stator teeth on one stator toothed plate. Because soft magnetic composite's three-dimensional magnetic conductivity, magnetic field can propagate in soft magnetic composite arbitrary direction, the utility model discloses the actual direction of propagation in the stator yoke intra-annular in magnetic field is the axial, realizes the transition of magnetic field from a stator pinion rack to another stator pinion rack. The magnetic field then propagates radially outward within the other stator tooth plate onto the stator teeth of the stator tooth plate and then from the stator teeth to the permanent magnets on the outer rotor.
The rotor magnetic circuit is: the magnetic field propagates on the outer rotor in a direction slightly inclined to the circumferential direction, returning to the stator teeth on the first one of the stator tooth plates. The stator magnetic circuit and the rotor magnetic circuit form the whole magnetic circuit of the motor, and the transmission process of the whole three-dimensional magnetic circuit is realized.
The utility model discloses following beneficial effect has:
1. the three-dimensional magnetic circuit structure is realized through the form that silicon steel sheet stator pinion rack and SMC stator yoke ring combine, need not set up the segmentation stator, also need not fold through the silicon steel sheet and press and obtain stator yoke portion, and it is not high to the assembly requirement, and the preparation degree of difficulty is low, man-hour, with low costs, can make more number of poles to the stator magnetic circuit of this kind of structure is difficult to the saturation, and the load capacity of motor is strong.
2. The structure of two silicon steel sheet stator toothed plates and the SMC stator yoke ring enables the stator winding of the motor to be completed by one coil per phase, and the problem of difficult winding of the traditional radial magnetic field motor is avoided. Simultaneously, the number of poles of motor increases can not influence the wire winding, if need increase the number of poles of motor, only need on the stator pinion rack directly increase the stator tooth the quantity can, therefore the motor can be designed into the winding space when more number of poles is not influenced, can increase the number of poles of motor as far as possible, promotes motor torque, consequently is particularly useful for the occasion of the big moment of torsion of low-speed.
The whole of stator yoke ring 203 is ring structure, and stator yoke ring 203 can be provided with annular step arch 206 on the surface outward, and two stator toothed plates set up respectively in the both sides of stator yoke ring, form stator magnetic circuit. The magnetic flux flows through the part outside the annular step bulge to form a main magnetic circuit, and the annular step bulge assists in magnetic conduction. The magnetic flux in the stator tooth plate silicon steel sheet should be guaranteed to switch on completely in the stator yoke ring at the junction of stator yoke ring and stator tooth plate, whether thickness dimension after the stator tooth plate is folded and stator yoke ring reserve the magnetic conduction of stator tooth plate to link up suitable on the design tolerance cooperation, should make the inner ring of stator tooth plate contact with stator yoke ring on the thickness direction completely.
And, the outer surface of stator yoke ring 203 is opened with a positioning slot 207, and the inner circle of stator tooth plate 202 is provided with an inward positioning bulge 208. The positioning groove and the positioning bulge realize circumferential positioning of the stator toothed plates, and the fact that the two stator toothed plates differ by 180-degree electrical angles is guaranteed. The shape of the positioning groove and the positioning bulge is preferably a square structure, and other shapes of structures are also possible.
The stator yoke ring is made of three-dimensional magnetic conductive materials such as SMC and the like, and can be manufactured by die pressing and processing. If the sectional area of the die pressing of the stator yoke ring is too large, when the pressure value of a press machine cannot meet the requirement of tooth grinding, the stator yoke ring can be divided into different small blocks to be respectively die-pressed, and finally the small blocks are spliced into a whole, and the accuracy of positioning between two connected stator toothed plates is ensured by the segmented stator yoke ring blocks.
Insulating materials are arranged among the coil 205, the stator toothed plate 202 and the stator yoke ring 203, and an insulating effect is guaranteed.
The stator yoke ring 203 is provided with an outlet hole 209, so that the coil can be led out from the inner circle of the stator yoke ring, the size of the outlet hole can be determined according to the wire diameter size of the wire, and an insulating space needs to be reserved.
Soft magnetic composite's mechanical strength is relatively poor, for avoiding stator yoke ring to bear torque, vibrations, electromagnetic force etc. and the destruction that causes, the utility model discloses a following structure:
the multiphase stator module is fixed together through the bolt, and is fixed on the stator shaft, and bolt hole 218 has been seted up at the interface department of stator pinion rack 202 and stator yoke ring 203, and bolt hole 218 includes the first half hole 211 that is located on stator pinion rack 202 and the second half hole 212 that is located on stator yoke ring 203, and the central angle of first half hole 211 is greater than 180, and the central angle of second half hole 212 is less than 180.
When the motor rotates, the multiphase stator module has certain torque relative to the rotor, the torque falls on the stator toothed plate, the torque borne by the stator toothed plate is transmitted to the stator shaft through bolts and other connecting mechanisms, and the stator yoke ring made of soft magnetic composite material is a structural member which does not bear the torque, so that the stator yoke ring is prevented from being damaged due to the bearing of the torque.
And because the bolt hole is located the part on the stator pinion rack and is greater than 180 degrees, is located the part on the stator yoke ring and is less than 180 degrees, so the pressure that the bolt bore can press on the stator pinion rack that the silicon steel sheet formed, and can not bear on the stator yoke ring, prevents that the stator yoke ring from damaging because of bearing pressure.
In order to isolate the magnetic fields of each phase of the motor from each other to avoid the magnetic fields in the stator phases from interfering with each other, it is necessary to space adjacent two stator modules apart by a certain distance, in one example, the adjacent two stator modules 201 are spaced apart by spacers 210.
The stator tooth plate 202 is provided with a gasket positioning groove 214 at the first half hole 211, the stator yoke ring 203 is provided with a gasket mounting groove 213 at the second half hole 212, the gasket 210 comprises a gasket body 215 and a positioning plate 216 perpendicular to the gasket body 215, the gasket body 215 is arranged in the gasket mounting groove 213, and the positioning plate 216 is arranged in the gasket positioning groove 214.
Adjacent two of stator are through bolted connection mutually, through gasket interval and spacing, and the locating plate on gasket constant head tank and the gasket can guarantee the certain electrical angle interval of adjacent two stator pinion rack within a definite time.
The utility model discloses do not restrict the number of phases of stator, can be three-phase, six looks etc. preferred, heterogeneous stator module 201 is the three-phase, and adjacent two-phase stator module 201 phase difference 120 electric angles, and A looks and B looks stator tooth central line phase difference 120 electric angles among the three-phase stator promptly, B looks the same reason, and this 120 electric angles adopts silicon steel sheet to process into different specification angles and realizes.
The utility model discloses in, the silicon steel sheet can fold through the welded mode and press into stator pinion rack 202, has weld opening 217 on the stator pinion rack 202.
In order to reduce the weight of the stator assembly, a slot may be formed in the stator toothed plate 202, specifically, the slot is formed in the middle of the stator toothed plate at a position with a low magnetic density.
The embodiment of the utility model provides a still provide a transverse flux motor, it includes aforementioned transverse flux motor stator module 200. The transverse flux motor comprises the stator assembly, and the transverse flux motor has the same beneficial effects as the stator assembly, and the description is omitted here.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a transverse flux motor stator module which characterized in that, is including fixed heterogeneous stator module together, and every looks stator module includes two ring shape stator toothed plate and a stator yoke ring of being made by soft-magnetic composite that are formed by silicon steel sheet along axial pressure-superposed, wherein:
the stator yoke comprises a stator module and a stator yoke ring, wherein the stator module is provided with a plurality of stator teeth on the periphery of the stator toothed plate, the two stator toothed plates of the same-phase stator module are different in an electrical angle of 180 degrees, the stator yoke ring is located in the inner circles of the two stator toothed plates of the same-phase stator module and is fixedly connected with the two stator toothed plates, and a coil wound by taking the axial direction as the center is arranged between the two stator toothed plates of the same-phase stator module.
2. The transverse flux motor stator assembly of claim 1, wherein the outer surface of the stator yoke ring is provided with an annular stepped boss, the outer surface of the stator yoke ring is provided with a positioning groove, and the inner circle of the stator toothed plate is provided with an inward positioning boss.
3. The transverse flux motor stator assembly according to claim 2, wherein insulation material is disposed between the coils and the stator tooth plates and the stator yoke ring.
4. The transverse flux motor stator assembly of claim 3, wherein the stator yoke ring defines an outlet aperture.
5. The transverse flux motor stator assembly according to any one of claims 1 to 4, wherein bolt holes are formed at the contact surface of the stator tooth plate and the stator yoke ring, the bolt holes comprise a first half hole on the stator tooth plate and a second half hole on the stator yoke ring, the central angle of the first half hole is greater than 180 degrees, and the central angle of the second half hole is less than 180 degrees.
6. The transverse flux motor stator assembly according to claim 5, wherein adjacent stator modules are spaced apart by spacers.
7. The transverse flux motor stator assembly according to claim 6, wherein a spacer locating slot is provided on the stator tooth plate at the first half bore, a spacer mounting slot is provided on the stator yoke ring at the second half bore, the spacer includes a spacer body and a locating plate perpendicular to the spacer body, the spacer body is disposed in the spacer mounting slot, and the locating plate is disposed in the spacer locating slot.
8. The transverse flux motor stator assembly according to claim 7, wherein the multi-phase stator modules are three-phase and adjacent two phase stator modules differ in electrical angle by 120 °.
9. The transverse flux motor stator assembly according to claim 8, wherein the silicon steel sheets are laminated by welding to form a stator tooth plate, and the stator tooth plate is provided with a slot.
10. A transverse-flux electric machine, comprising a transverse-flux electric machine stator assembly according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021561797.XU CN212486211U (en) | 2020-07-31 | 2020-07-31 | Transverse flux motor stator assembly and transverse flux motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021561797.XU CN212486211U (en) | 2020-07-31 | 2020-07-31 | Transverse flux motor stator assembly and transverse flux motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212486211U true CN212486211U (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021561797.XU Active CN212486211U (en) | 2020-07-31 | 2020-07-31 | Transverse flux motor stator assembly and transverse flux motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212486211U (en) |
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2020
- 2020-07-31 CN CN202021561797.XU patent/CN212486211U/en active Active
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