CN212811388U - Transverse flux motor stator assembly and transverse flux motor - Google Patents

Abstract

The utility model discloses a transverse flux motor stator assembly and transverse flux motor belongs to the motor field. The stator assembly comprises a stator shaft and a multi-phase stator module fixed on the stator shaft, wherein each phase of stator module comprises two annular stator toothed plates formed by laminating silicon steel sheets along the axial direction and a stator yoke ring made of soft magnetic composite materials. The periphery of the stator toothed plate is provided with a plurality of stator teeth, two stator toothed plates of the same phase stator module differ by 180 electrical angles, 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

Transverse flux motor stator assembly and transverse flux motor

Technical Field

The utility model relates to the field of electric machines, especially indicate a transverse flux motor stator assembly 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 assembly 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 assembly, includes the stator shaft and fixes the heterogeneous stator module on the stator shaft, 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.

Furthermore, a first side plate and a second side plate are respectively arranged on two sides of the multi-phase stator module, a first group of bolt holes are formed in the first side plate and the second side plate, a second group of bolt holes are formed in the contact surface of the stator toothed plate and the stator yoke ring, a first group of bolts penetrate through the first group of bolt holes and the second group of bolt holes to fix the first side plate, the second side plate and the multi-phase stator module together, and the first side plate and the second side plate are fixed together with the stator shaft;

each hole in the second set of bolt holes comprises a first half hole located on the stator tooth plate and a second half hole located 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.

Furthermore, the shape symmetry of first curb plate and second curb plate, third group bolt hole has all been seted up on first curb plate and the second curb plate, the epaxial polylith protruding structure that is provided with of stator, the surface of protruding structure with the interior round contact of stator yoke ring, fourth group bolt hole has been seted up on two sides of protruding structure, and second group bolt passes third group bolt hole and fourth group bolt hole will first curb plate and second curb plate respectively with two side fixed connection of protruding structure.

Furthermore, one side of the first side plate and one side of the second side plate are pressed on the stator toothed plate, the other side of the first side plate and the second side plate are provided with weight reduction grooves, inward convex blocks are arranged on the inner circles of the first side plate and the second side plate, and the third group of bolt holes are arranged on the convex blocks;

the stator shaft is a hollow shaft, and a wire outlet hole is formed in the stator shaft.

Further, the first side plate and the stator shaft are of an integral structure, and the outer surface of the stator shaft is in contact with the inner circle of the stator yoke ring; one side of the second side plate is pressed on the stator toothed plate, a weight reduction groove is formed in the other side of the second side plate, an inward positioning block is arranged on the inner circle of the second side plate, and a positioning groove is formed in the stator shaft;

the stator shaft is a hollow shaft, and a wire outlet groove is formed in the stator shaft.

Furthermore, the middle parts of the first side plate and the second side plate are sunken towards the middle part of the stator shaft, the first side plate is fixed on the stator shaft through a third group of bolts, the second side plate is fixed on the stator shaft through a shaft sleeve, and an interval space is formed between the outer surface of the stator shaft and the inner circle of the stator yoke ring.

Furthermore, a fifth group of bolt holes are formed in the concave position of the first side plate, a plurality of raised sheet-shaped structures are arranged on the stator shaft, a sixth group of bolt holes are formed in the sheet-shaped structures, and the third group of bolts penetrate through the fifth group of bolt holes and the sixth group of bolt holes to fix the first side plate on the stator shaft;

the shaft sleeve is welded on the inner circle of the second side plate, and the shaft sleeve and the stator shaft are fixed in a key connection mode;

the stator shaft is a hollow shaft, and a wire outlet hole is formed in the stator shaft.

Further, bearing mounting positions are arranged on two sides of the stator shaft, and bearings are mounted on the bearing mounting positions; and positioning planes or positioning key grooves are formed in the two ends of the stator shaft, and threads are arranged on circular arcs, positioned outside the positioning planes, of the two ends of the stator shaft.

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;

the adjacent two-phase stator modules are spaced by a gasket, the stator toothed plate is positioned at the first half hole and provided with a gasket positioning groove, the stator yoke ring is positioned at the second half hole and provided with a gasket mounting groove, the gasket comprises a gasket body and a positioning plate perpendicular to the gasket body, the gasket body is arranged in the gasket mounting groove, and the positioning plate is arranged in the gasket positioning groove.

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 first example of a transverse flux motor stator assembly of the present invention;

fig. 2 is a cross-sectional view of an exemplary first transverse flux motor stator assembly of the present invention;

fig. 3 is a perspective view of a multi-phase stator module;

FIG. 4 is an exploded view of a multi-phase stator module;

FIG. 5 is a perspective view of a phase stator module;

FIG. 6 is an exploded view of a phase stator module;

figure 7 is a perspective view of the stator tooth plate;

fig. 8 is a perspective view of the stator yoke ring;

FIG. 9 is a perspective view illustrating a stator shaft according to one embodiment;

FIGS. 10 and 11 are perspective views illustrating a first side panel and a second side panel according to an example;

fig. 12 is a perspective view of a second example of a transverse flux motor stator assembly in accordance with the present invention;

fig. 13 is a perspective view of a stator shaft according to example two;

fig. 14 and 15 are perspective views illustrating a second side plate;

fig. 16 is a perspective view of a third example transverse flux motor stator assembly in accordance with the present invention;

fig. 17 is a cross-sectional view of a third example transverse-flux motor stator assembly in accordance with the present invention;

fig. 18 is a perspective view of a stator shaft according to example three;

fig. 19 and 20 are perspective views illustrating a third exemplary first side panel;

fig. 21 is a perspective view illustrating a third exemplary second side plate;

fig. 22 is a perspective view illustrating a sleeve according to the third embodiment.

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 assembly 200, as shown in fig. 1-22, it includes stator shaft 201 and fixes heterogeneous stator module 202 on stator shaft 201, and every looks stator module 202 includes that two fold along the axial by the silicon steel sheet and press the ring shape stator pinion rack 203 that forms and a stator yoke ring 204 of being made by soft-magnetic composite (SMC), wherein:

be provided with a plurality of stator tooth 205 in the periphery of stator pinion rack 203, 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 203 of the same phase stator module 202 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 204 is located in the inner circles of the two stator tooth plates 203 of the same-phase stator module 202 and is fixedly connected with the two stator tooth plates 203, a coil 206 wound by taking the axial direction as the center is arranged between the two stator tooth plates 203 of the same-phase stator module 202, 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 do not restrict the phase number of motor, for example can be three-phase, six looks etc..

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.

Soft magnetic composite's mechanical strength is relatively poor, for avoiding stator yoke ring to bear the torque, vibrations, the destruction that the electromagnetic force etc. and cause, the utility model discloses both sides at heterogeneous stator module are provided with first curb plate 207 and second curb plate 208 respectively, have all seted up first group bolt hole 209 on first curb plate 207 and the second curb plate 208, and second group bolt hole 210 has been seted up in the contact surface department of stator tooth plate 203 and stator yoke ring 204, and first group bolt 211 passes first group bolt hole 209 and second group bolt hole 210 and fixes first curb plate 207, second curb plate 208 and heterogeneous stator module 202 together, and first curb plate 207 and second curb plate 208 are together fixed with stator shaft 201.

Each of the second set of bolt holes 210 includes a first half hole 212 on the stator tooth plate 203 and a second half hole 213 on the stator yoke ring 204, the first half hole 212 having a central angle greater than 180 ° and the second half hole 213 having a central angle less than 180 °.

The utility model discloses a first curb plate and second curb plate are in the same place heterogeneous stator module clamp is tight fixed to fix whole heterogeneous stator module to the stator shaft. 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 the first group of bolts, the first side plate and the second side plate, 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 part that the second group bolt hole is located on the stator toothed plate is greater than 180 degrees, the part that is located on the stator yoke ring is less than 180 degrees, so the pressure that first group bolt bore can press on the stator toothed plate 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.

There are various ways of connecting the first side plate and the second side plate to the stator shaft, and three examples are illustrated below.

Example one:

as shown in fig. 1, 2, and 9-11, the first side plate 207 and the second side plate 208 are symmetrical in shape, a third set of bolt holes 214 are formed in both the first side plate 207 and the second side plate 208, a plurality of protruding structures 215 are arranged on the stator shaft 201, the outer surfaces of the protruding structures 215 contact the inner circle of the stator yoke ring 204, fourth sets of bolt holes 216 are formed in both side surfaces of the protruding structures 215, and a second set of bolts 217 penetrates through the third set of bolt holes 214 and the fourth set of bolt holes 216 to fixedly connect the first side plate 207 and the second side plate 208 with both side surfaces of the protruding structures 215.

In this example, two side plates are used to clamp the multi-phase stator module, and a plurality of first set of bolts pass through the multi-phase stator module to fix the first set of bolts to the two side plates. The side plates are fixedly connected with the stator shaft through a second group of bolts, so that torque can be transmitted to the stator shaft from the stator toothed plates. Moreover, the outer diameter of the stator shaft is smaller than the inner diameter of the stator yoke ring, so that the stator shaft and the stator yoke ring are positioned in a contact manner, a protruding structure needs to be arranged on the stator shaft, and the side surface of the protruding structure can be used as a fixing surface of the first side plate and the second side plate.

One side of first curb plate 207 and second curb plate 208 is pressed on stator pinion rack 203, for further preventing that the curb plate from pressing on the stator yoke ring for the stator yoke ring bears the pressure of bolt, the utility model discloses the position that first curb plate/second side and stator yoke ring are relative is sunken to first curb plate/second side inside, makes and does not have pressure between first curb plate/second side and the stator yoke ring.

The other sides of the first side plate 207 and the second side plate 208 are provided with weight-reducing grooves 218, the inner circles of the first side plate 207 and the second side plate 208 are provided with inward lugs 219, and the third group of bolt holes 214 are formed in the lugs 219.

The stator shaft 201 is a hollow shaft, the stator shaft 201 is provided with a wire outlet 220 which is used as an outlet of the stator and the Hall element, the wire outlet is communicated with a central hole of the stator shaft, and the conducting wire can be led to one side or two sides of the stator according to requirements.

The stator shaft 201 has positioning planes 231 formed at both ends thereof, and the stator shaft 201 has threads formed on arcs 233 located outside the positioning planes 231 at both ends thereof. The parallel surface is used for being fixed with an external device, and the two arc surfaces outside the plane are provided with threads which can be fixed by nuts.

Bearing mounting positions 229 are arranged on two sides of the stator shaft 201, and bearings 230 are mounted on the bearing mounting positions 229 and are used for supporting a motor end cover.

Example two:

as shown in fig. 12-15, the first side plate 207 is integral with the stator shaft 201, and the outer surface of the stator shaft 201 contacts the inner circle of the stator yoke ring 204; one side of the second side plate 208 presses on the stator tooth plate 203, the other side is provided with a weight reduction groove 218, an inward positioning block 221 is arranged on the inner circle of the second side plate 208, and a positioning groove 222 is arranged on the stator shaft 201.

The stator shaft 201 is a hollow shaft, the stator shaft 201 is provided with an outlet slot 223, two ends of the stator shaft 201 are provided with positioning planes 231, and two ends of the stator shaft 201 are provided with threads on arcs 233 outside the positioning planes 231.

The difference between this example and example one lies in that the first curb plate, the second curb plate and the structure of stator axle are different to first curb plate and stator axle combine as an organic wholely, and be good to motor stator relative rotor whole location like this, reduced the bolt quantity (omit second group bolt), stator axle inner space is more sufficient, can be used to do other uses, for example the pencil of other motors also can pass in this hole.

However, the cost of manufacturing and processing in the motor is increased in the example, the stator shaft is thicker than the example, the bearing is also larger in size, and the bearing can be an angular contact bearing, a deep groove ball bearing or other types of bearings. The motor lead is led out from a long strip-shaped wire outlet groove of the stator shaft, and the lead of the Hall element is also led out from the wire outlet groove, led into an inner hole of the motor and butted with the outside. The positioning groove of the stator shaft is used for circumferential positioning with the positioning block extending out of the inner circle of the second side plate, and one or more positioning grooves can be arranged.

Example three:

in the present example, as shown in fig. 16 to 22, the middle portions of the first side plate 207 and the second side plate 208 are recessed toward the middle portion of the stator shaft, the first side plate 207 is fixed to the stator shaft 201 by a third set of bolts 224, the second side plate 208 is fixed to the stator shaft 201 by a sleeve 225, and a space is provided between the outer surface of the stator shaft 201 and the inner circle of the stator yoke ring 204.

The first side plate 207 is provided with a fifth group of bolt holes 226 at a concave position, the stator shaft 201 is provided with a plurality of convex sheet structures 227, the sheet structures 227 are provided with a sixth group of bolt holes 228, and the third group of bolts 224 pass through the fifth group of bolt holes 226 and the sixth group of bolt holes 228 to fix the first side plate 207 on the stator shaft 201.

The shaft sleeve 225 is welded on the inner circle of the second side plate 208, and the shaft sleeve 225 is fixed with the stator shaft 201 in a key connection mode.

The stator shaft 201 is a hollow shaft, the stator shaft 201 is provided with a wire outlet 220, and two ends of the stator shaft 201 are provided with positioning key slots 232.

In this example, the first side plate and the second side plate adopt the indent structure to save a part of axial space, so the bearing can be installed in the recess, and the installation position of the bearing can be more inclined to the inner layer, so that the structure of the motor is as compact as possible.

The stator shaft can be butted with the outside in a form that positioning key grooves are designed at two ends as shown in fig. 18, and other forms can also be adopted, such as spline, positioning planes and threads in the first and second examples, and the like. The inner circle of the stator yoke ring is not matched with any structural part (the outer surface of the stator shaft) after the stator yoke ring is integrally assembled, and the pressure on the stator yoke ring is further reduced.

As shown in fig. 8, the outer surface of the stator yoke ring 204 is provided with an annular step protrusion 234, and the two stator tooth plates are respectively disposed on two sides of the stator yoke ring to form a 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 204 is opened with a positioning groove 235, and the inner circle of stator tooth plate 203 is provided with an inward positioning bulge 236. 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 stator yoke ring mould pressing is too big, when the pressure value of press can not reach the requirement of mould pressing, can cut apart into different fritts with the stator yoke ring and carry out the mould pressing respectively, splice into a whole at last to the stator yoke ring piece of piecemeal will guarantee the accuracy of two stator pinion racks of connecting each other to fix a position.

Insulating materials can be arranged between the coil and the stator toothed plate and between the coil and the stator yoke ring, and the insulating effect is guaranteed.

The inner circle of the stator yoke ring 204 is provided with an outlet 242, so that the coil can be led out from the inner circle of the stator yoke ring, the size of the outlet can be determined according to the wire diameter size of the wire, and an insulating space needs to be reserved.

To isolate the magnetic fields of each phase of the machine from each other to avoid interference of the magnetic fields in the stator phases, it is necessary to space adjacent stator modules apart by a distance, in one example, a spacer 237 between adjacent stator modules 202.

The utility model discloses do not restrict the number of phases of stator, can be three-phase, six looks etc. preferred, heterogeneous stator module is the three-phase, and adjacent two-phase stator module 202 phase difference 120 electric angles, and A looks and B looks stator tooth central line phase difference 120 electric angles in the three-phase stator promptly, B looks same reason, and this 120 electric angles adopts silicon steel sheet to process into different specification angles and realizes.

The stator tooth plate 203 is provided with a gasket positioning groove 238 at the first half hole 212, the stator yoke ring 204 is provided with a gasket mounting groove 239 at the second half hole 213, the gasket 237 includes a gasket body 240 and a positioning plate 241 perpendicular to the gasket body 240, the gasket body 240 is disposed in the gasket mounting groove 239, and the positioning plate 241 is disposed in the gasket positioning groove 238.

Adjacent two looks of stator are through first group bolted connection, through the gasket interval and spacing, and the 120 degrees electrical angle interval of stator pinion rack between adjacent two can be guaranteed to the locating plate on gasket constant head tank and the gasket. And the shim mounting slots should have sufficient recess to ensure that the stress of the first set of bolts is not concentrated on the stator yoke ring.

The utility model discloses in, the silicon steel sheet can fold through the welded mode and press into stator pinion rack 203, has weld opening 243 on the stator pinion rack 203.

In order to reduce the weight of the stator assembly, a slot 244 may be formed in the stator toothed plate 203, 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 assembly 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 assembly, its characterized in that includes the stator shaft and fixes the heterogeneous stator module on the stator shaft, and every looks stator module includes two ring shape stator toothed plate that form and a stator yoke ring of being made by soft-magnetic composite along the axial by 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.

2. The transverse flux motor stator assembly according to claim 1, wherein a first side plate and a second side plate are respectively arranged on two sides of the multi-phase stator module, a first group of bolt holes are formed in each of the first side plate and the second side plate, a second group of bolt holes are formed in a contact surface of the stator toothed plate and the stator yoke ring, a first group of bolts penetrates through the first group of bolt holes and the second group of bolt holes to fix the first side plate, the second side plate and the multi-phase stator module together, and the first side plate and the second side plate are fixed together with the stator shaft;

each hole in the second set of bolt holes comprises a first half hole located on the stator tooth plate and a second half hole located 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.

3. The transverse flux motor stator assembly according to claim 2, wherein the first side plate and the second side plate are symmetrical in shape, a third set of bolt holes are formed in each of the first side plate and the second side plate, the stator shaft is provided with a plurality of protruding structures, outer surfaces of the protruding structures are in contact with inner circles of the stator yoke rings, fourth sets of bolt holes are formed in two side surfaces of each protruding structure, and a second set of bolts penetrates through the third set of bolt holes and the fourth set of bolt holes to fixedly connect the first side plate and the second side plate with the two side surfaces of the protruding structures respectively.

4. The transverse flux motor stator assembly according to claim 3, wherein one side of the first side plate and the second side plate presses against the stator tooth plate, a weight reduction groove is formed in the other side of the first side plate and the second side plate, inward protrusions are formed on inner circles of the first side plate and the second side plate, and the third group of bolt holes are formed in the protrusions;

the stator shaft is a hollow shaft, and a wire outlet hole is formed in the stator shaft.

5. The tfem stator assembly of claim 2, wherein the first side plate is a unitary structure with a stator shaft, an outer surface of the stator shaft contacting an inner circle of the stator yoke ring; one side of the second side plate is pressed on the stator toothed plate, a weight reduction groove is formed in the other side of the second side plate, an inward positioning block is arranged on the inner circle of the second side plate, and a positioning groove is formed in the stator shaft;

the stator shaft is a hollow shaft, and a wire outlet groove is formed in the stator shaft.

6. The tfem stator assembly of claim 2, wherein intermediate portions of the first and second side plates are recessed toward an intermediate portion of the stator shaft, the first side plate is secured to the stator shaft by a third set of bolts, the second side plate is secured to the stator shaft by a bushing, and a space is provided between an outer surface of the stator shaft and an inner circumference of the stator yoke ring.

7. The transverse flux motor stator assembly according to claim 6, wherein the first side plate defines a fifth set of bolt holes in a recess, the stator shaft defines a plurality of raised tabs, the tabs define a sixth set of bolt holes, and the third set of bolts passes through the fifth and sixth sets of bolt holes to secure the first side plate to the stator shaft;

the shaft sleeve is welded on the inner circle of the second side plate, and the shaft sleeve and the stator shaft are fixed in a key connection mode;

the stator shaft is a hollow shaft, and a wire outlet hole is formed in the stator shaft.

8. The tfem stator assembly of any one of claims 2-7, wherein bearing mounting locations are provided on either side of the stator shaft, the bearing mounting locations having bearings mounted thereon; and positioning planes or positioning key grooves are formed in the two ends of the stator shaft, and threads are arranged on circular arcs, positioned outside the positioning planes, of the two ends of the stator shaft.

9. The transverse flux motor stator assembly according to claim 8, wherein the outer surface of the stator yoke ring is provided with an annular step protrusion, 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 protrusion;

the adjacent two-phase stator modules are spaced by a gasket, the stator toothed plate is positioned at the first half hole and provided with a gasket positioning groove, the stator yoke ring is positioned at the second half hole and provided with a gasket mounting groove, the gasket comprises a gasket body and a positioning plate perpendicular to the gasket body, the gasket body is arranged in the gasket mounting groove, and the positioning plate is arranged in the gasket positioning groove.

10. A transverse-flux electric machine comprising a transverse-flux electric machine stator assembly according to any one of claims 1-9.

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