CN-121485325-B - Axial flux motor

CN121485325BCN 121485325 BCN121485325 BCN 121485325BCN-121485325-B

Abstract

The invention relates to the technical field of motors, in particular to an axial flux motor. The utility model provides an axial magnetic flux motor includes output shaft, stator and adjustment mechanism, and the stator includes a plurality of iron cores, and the installation passageway has been seted up at every iron core middle part, has the coolant liquid in the installation passageway. The adjustment mechanism includes a plurality of adjustment assemblies including soaking rings. The soaking ring is used for being in contact with the iron core so as to enhance the heat dissipation effect on the iron core. A silk screen is arranged in the soaking ring, and the inside of the soaking ring is filled with working fluid. The overall density of the soaking ring is less than that of the cooling liquid. When the output shaft is vertically arranged, the soaking ring increases the contact area between the soaking ring and the upper part of the iron core through floating upwards so as to compensate the influence of gravity on capillary action and realize uniform heat dissipation on the upper part and the lower part of the iron core. The invention provides an axial flux motor, which aims to solve the problems of low heat dissipation efficiency and uneven heat dissipation of the existing axial flux motor.

Inventors

DU HUAIYING
WANG LIANHUI
ZHOU WEI

Assignees

天津九信科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260109

Claims (10)

1. An axial flux electric machine, characterized by: The motor comprises a shell, an output shaft, a stator, an adjusting mechanism and two rotors, wherein the output shaft is rotationally arranged in the shell; The stator is arranged between the two rotors, and comprises a plurality of iron cores distributed along the circumferential direction of the output shaft, wherein an installation channel is formed in the middle of each iron core, and cooling liquid is arranged in the installation channel; The regulating mechanism comprises a plurality of regulating components, wherein each regulating component is arranged in a communication channel, each regulating component comprises a soaking ring, the soaking ring is axially arranged along the radial direction of an output shaft, the soaking ring can axially rotate around the soaking ring and can axially move along the output shaft, the soaking ring is used for being in contact with an iron core so as to realize the cooling effect on the iron core, a silk screen is arranged in the soaking ring, the inside of the soaking ring is filled with working fluid, the working fluid circularly flows in the soaking ring under the capillary action, the area where the soaking ring and the iron core axially contact with each other along the output shaft forms a evaporating end, the middle part of the soaking ring is a condensing end, the working fluid is vaporized after the evaporating end absorbs heat, the steam flows to the condensing end through the pressure difference in the soaking ring, and is condensed into liquid and releases latent heat when meeting condensation, and the liquid returns to the evaporating end through the capillary force to form closed-loop circulation, and the integral density of the soaking ring is smaller than that of the cooling fluid; When the output shaft is vertically arranged, the soaking ring increases the contact area between the soaking ring and the upper part of the iron core through floating upwards so as to compensate the influence of gravity on capillary action.
2. An axial flux electric machine as defined in claim 1, wherein: The iron core comprises a plurality of iron sheets, and the plurality of iron sheets are distributed along the radial direction of the output shaft in sequence.
3. An axial flux electric machine as defined in claim 2, wherein: Along the direction of the output shaft that keeps away gradually, the length of a plurality of iron sheets along output shaft tangential gradually increases, and the diameter of a plurality of soaking rings gradually increases to the shape of adaptation iron sheet.
4. An axial flux electric machine as defined in claim 2, wherein: Each iron sheet comprises a first plate, a second plate and an intermediate plate, the first plate and the second plate are sequentially distributed along the axial direction of the output shaft, the intermediate plate is connected with the first plate and the second plate, when the output shaft is vertically arranged, the first plate is positioned above the second plate, two coils are arranged on each iron core, the two coils on each iron core are wound on the whole iron core formed by overlapping a plurality of iron sheets, and the two coils are respectively positioned between the first plate and the intermediate plate and between the second plate and the intermediate plate.
5. An axial flux electric machine as defined in claim 4, wherein: the regulating mechanism further comprises rotating rods which are arranged along the radial direction of the output shaft, each rotating rod is arranged in one installation channel, the rotating rods are positioned in the middle of the middle plate, and a plurality of soaking rings in each installation channel are rotationally arranged on one rotating rod.
6. An axial flux electric machine as defined in claim 5, wherein: each adjusting component further comprises a soft gasket, the soft gasket and the soaking ring are coaxially arranged and are positioned on the inner side of the soaking ring, and the soft gasket is used for propping against the rotating rod and can deform.
7. An axial flux electric machine as defined in claim 1, wherein: each rotor comprises a plurality of magnetic blocks, the plurality of magnetic blocks are sequentially distributed along the circumferential direction of the output shaft, the magnetism of two adjacent magnetic blocks in the same rotor is opposite, and the magnetic blocks of the two rotors are distributed in a staggered manner, so that any one magnetic block in one rotor corresponds to the position between the two adjacent magnetic blocks in the other rotor in the circumferential direction.
8. An axial flux electric machine as defined in claim 1, wherein: The shell is internally provided with a liquid inlet pipe, a liquid outlet pipe and a water pump, wherein the liquid inlet pipe is communicated with a plurality of liquid inlet channels, the liquid outlet pipe is communicated with a plurality of liquid outlet channels, and the water pump is used for pumping cooling liquid into the liquid inlet channels.
9. An axial flux electric machine as defined in claim 1, wherein: The motor further comprises a driving mechanism, wherein the driving mechanism comprises a three-phase power supply, the three-phase power supply is connected with the stator and used for supplying power to the stator, and the stator can drive the rotor to rotate after being electrified.
10. An axial flux electric machine as defined in claim 9, wherein: The drive mechanism further comprises two end caps, wherein the end caps are arranged in the shell, and each end cap is arranged on one side of one rotor far away from the other rotor.

Description

Axial flux motor Technical Field The invention relates to the technical field of motors, in particular to an axial flux motor. Background An axial flux motor is a rotating electrical machine with a magnetic field direction axially parallel to the motor shaft. Unlike conventional radial flux machines, in which the magnetic field passes radially through the air gap, the stator and rotor disks of an axial flux machine are arranged axially, with the magnetic field lines passing axially through the thin disk-shaped air gap. The unique magnetic circuit topological structure is flat in structure, and has the remarkable characteristics of short axial length and compact structure. The motor is mainly used for occasions requiring high power density, high torque density and limited axial installation space. The axial flux motor has great application potential in the fields of electric automobile driving, hybrid power systems, wind power direct-driven power generation, aerospace, high-performance industrial servo and the like due to the flat structure and excellent magnetic flux utilization rate. The design is particularly suitable for realizing advanced configurations such as hub motor driving, integrated driving units and the like, and is beneficial to improving the efficiency and the power density of the whole transmission system. The invention patent application of publication number CN120281125A provides an axial flux electric machine in which heat generated by the core is transferred to the stator support in a contact heat exchange manner via the heat conductive insulating layer and the potting adhesive having high heat conductive properties, thereby performing convective heat exchange with the outside air. However, the heat in the mode needs to sequentially penetrate through multiple layers of interfaces and materials, and each layer introduces significant thermal resistance, so that the overall heat transfer efficiency is low, and a large amount of heat generated under high power density is difficult to rapidly derive. The potting compound not only has limited heat transfer capability, but also increases the heat capacity of the stator and may impede the flow of internal air, causing heat to accumulate in the core and winding area. The heat accumulation effect can cause the temperature inside the motor to rise, uniform heat dissipation is difficult to realize, and local overheat risks exist at key parts such as windings, so that the insulation life and the magnetic material performance are affected. Disclosure of Invention The invention provides an axial flux motor, which aims to solve the problems of low heat dissipation efficiency and uneven heat dissipation of the existing axial flux motor. The axial flux motor adopts the following technical scheme that the axial flux motor comprises a shell, an output shaft, a stator, an adjusting mechanism and two rotors. The output shaft is rotatably disposed within the housing. The rotors are fixedly connected with the output shaft, and the two rotors are axially distributed at intervals along the output shaft. The stator is arranged between the two rotors, and the stator comprises a plurality of iron cores distributed along the circumferential direction of the output shaft. The middle part of each iron core is provided with a mounting channel, and cooling liquid is arranged in the mounting channel. A stop block is arranged in the mounting channel, and the stop block divides the mounting channel into a liquid inlet channel and a liquid outlet channel which are distributed along the circumferential direction of the output shaft. The stop block comprises a plurality of dividing plates which are distributed along the radial direction of the output shaft, a communication channel is formed between two adjacent dividing plates, and the communication channel is communicated with the liquid inlet channel and the liquid outlet channel. The adjusting mechanism comprises a plurality of adjusting components, each adjusting component is arranged in one communication channel, each adjusting component comprises a soaking ring, and the axial direction of the soaking ring is arranged along the radial direction of the output shaft. The soaking ring can rotate around the axial direction of the soaking ring and can move along the axial direction of the output shaft. The soaking ring is used for contacting with the iron core to realize the cooling effect on the iron core. The soaking ring is internally filled with a working fluid, and the working fluid circularly flows in the soaking ring under the action of capillary action. The overall density of the soaking ring is less than that of the cooling liquid. When the output shaft is vertically arranged, the soaking ring increases the contact area between the soaking ring and the upper part of the iron core through floating upwards so as to compensate the influence of gravity on capillary action. Further, the iron core comprises a plurality of i