D-shaped core stator and high-speed disc-type shaftless motor with same

Abstract

The application relates to the technical field of electric machines, in particular to a D-shaped core stator and a high-speed disc type shaftless motor with the same, which comprises a stator core, the stator core is in the shape of a 'D', and two stator cores are symmetrically spliced into a complete stator core; a stator coil winding, a slanting slot is formed in the stator coil winding, and the two ends of the stator core are respectively embedded in the slanting slot; the high-speed disc type shaftless motor is realized based on the D-shaped core stator and comprises a shell, a tip shell and a flow channel; and a rotor assembly comprising a double-rotor without back iron; the D-shaped core stator is designed to improve magnetic performance, the symmetric slanting slot structure is used to optimize operation stability, the composite material and the splicing design are used to enhance structural strength, and the 3D printing self-supporting winding is used to reduce loss control; the lightweight rotor topology and the adaptive output structure are adopted, and the fluid mechanics performance is further optimized according to the paddle design of specific application; the self-adaptive cooling flow channel realizes precise heat dissipation through a multi-chamber grid layout.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a D-type iron core stator and a high-speed disc-type shaftless motor having the same. Background Technology

[0002] With the rapid development of industries such as new energy and high-end equipment manufacturing, higher requirements are being placed on the power density, lightweight design, operational stability, and adaptability to various scenarios of motor equipment. Currently, in the field of motor technology, there are still many technical deficiencies in stator structure, shaftless motor body design, and heat dissipation systems that urgently need to be addressed, hindering the improvement of overall motor performance.

[0003] In terms of stator core design, traditional stator cores mostly adopt a cylindrical one-piece molding structure or a straight-line unfolded rolled structure, which has significant shortcomings: First, the magnetic properties are limited. The conventional silicon steel sheet material and assembly process result in low core permeability and insufficient air gap magnetic density, which directly affects the improvement of motor power density. Second, the operating stability is poor. The traditional integer slot winding design is prone to high harmonic distortion rate and cogging torque, causing vibration and noise problems during motor operation, affecting the user experience. Third, the structure and processing adaptability are poor. The one-piece molding structure has low assembly flexibility, and the rolled structure requires pre-shaping treatment during the merging process, which is cumbersome and has a large deformation at the connection, making it prone to breakage or poor contact. At the same time, the mechanical strength of the core is insufficient, making it difficult to adapt to high-speed operating conditions. Fourth, the winding design has limitations. Traditional windings mostly rely on yoke support, which easily generates additional iron losses. Moreover, the limited winding space leads to low slot fill factor and high coil current density, which further aggravates loss and temperature rise problems.

[0004] In the field of high-speed disc shaftless motors, existing technologies still face multiple bottlenecks: On the one hand, it is difficult to balance lightweighting and space efficiency. Traditional shafted motors have complex shaft structures and are heavy. Even existing shaftless motors often have high overall weight and large axial dimensions due to issues such as rotor back iron design and redundant winding support structures, which cannot meet the application requirements of space-constrained scenarios. On the other hand, energy efficiency needs to be improved. Traditional motors have poor iron loss control, especially with a high proportion of iron loss in the yoke. At the same time, the power output structure is simple and has poor adaptability, making it difficult to accommodate different types of power output requirements. For special application scenarios such as rim propellers, existing blades mostly adopt a radially symmetrical layout, which has problems such as insufficient thrust density, high wake vortex intensity, and easy cavitation at the blade tip. In addition, the blade connection method is unreasonable, making disassembly and maintenance inconvenient and susceptible to damage from water flow impact.

[0005] Chinese patent CN115733323B discloses a five-degree-of-freedom ultra-high-speed bearingless permanent magnet motor. A cylindrical solid permanent magnet has shafts connected to both ends. A housing is mounted on the outside of the cylindrical solid permanent magnet, and a stator core is fixedly mounted on the housing. A torque winding is embedded in the bottom layer of the stator core, and two suspension windings are embedded in the upper layer. End covers are fixedly mounted on both sides of the housing, and auxiliary bearings are installed between the end covers and the shafts. Passive permanent magnet bearings are nested on both the end covers and the shafts. This invention integrates magnetic suspension bearings with a permanent magnet motor, enabling the motor to generate electromagnetic torque that drives the rotor to rotate, while also generating radial suspension force to overcome rotor gravity and unilateral magnetic pull. This simplifies the motor structure and shortens the axial length of the motor. The dual suspension windings and axial passive permanent magnet bearings achieve five-degree-of-freedom control, increasing the rotor stiffness and critical speed of the ultra-high-speed motor, and improving operational stability and anti-disturbance capability.

[0006] However, due to the high degree of integration in the above-mentioned patents, the heat generated during high-speed rotation cannot be dissipated. Especially when applied to the rim propeller scenario, it is necessary to ensure both watertight sealing and timely heat exchange to maintain normal working efficiency and avoid affecting working efficiency due to heat. Summary of the Invention

[0007] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0008] In view of the problems existing in the prior art, the present invention is proposed.

[0009] To solve the above technical problems, the present invention provides the following technical solution: a stator core, wherein the stator core is "D" shaped, and two stator cores are symmetrically spliced ​​together to form a complete stator core, and the connection points of each stator core are filled with magnetic adhesive;

[0010] And a stator coil winding, wherein a slanted slot is provided on the stator coil winding, and both ends of the stator core are respectively fitted into the slanted slot.

[0011] The present invention also discloses a high-speed disc shaftless motor, the high-speed disc shaftless motor comprising: a housing, the housing being used to isolate the inside and outside of the motor, the housing comprising a central cylindrical shell and pointed shells disposed at both ends of the cylindrical shell, the outer walls of the two pointed shells and the interior of the cylindrical shell being provided with communicating flow channels;

[0012] The stator assembly includes two rows of D-type iron core stators arranged in an array, a stator core base located at the end of the D-type iron core stator, and an end cap embedded in the inner wall of the housing;

[0013] The rotor assembly includes a back-iron-less dual rotor rotatably disposed on both sides of the stator assembly end caps, the back-iron-less dual rotor being rotatably disposed on the inner wall of the housing via bearings.

[0014] As a preferred embodiment of the high-speed disc shaftless motor of the present invention, it further includes an output component, including an output end, which rotates synchronously with the back ironless dual rotor to output power.

[0015] As a preferred embodiment of the high-speed disc shaftless motor of the present invention, the flow channel includes an inlet, a first chamber, a second chamber, and an outlet, wherein the inlet and outlet are formed on the tip shell.

[0016] As a preferred embodiment of the high-speed disc shaftless motor of the present invention, the first chamber and the second chamber are integrally disposed inside the cylindrical shell, the cooling medium enters from the inlet and flows out from the outlet, and the flow rate of the cooling medium entering the first chamber and the second chamber is controlled according to the temperature distribution of each region.

[0017] As a preferred embodiment of the high-speed disc shaftless motor of the present invention, a baffle plate is rotatably provided at the connection between the first chamber and the second chamber. The baffle plate is a hollow cylinder cut in half. When the baffle plate rotates, the opening of the second chamber is adjusted.

[0018] In a preferred embodiment of the high-speed disc shaftless motor of the present invention, a rotating ring is rotatably provided in the first chamber, the rotating ring is fixedly connected to the barrier plate and rotates synchronously, and a rotating cylinder is rotatably provided in the first chamber, the rotating cylinder controlling the opening of the rotating ring.

[0019] In a preferred embodiment of the high-speed disc shaftless motor of the present invention, the rotating ring is provided with a sliding hole, the rotating cylinder is provided with a transmission column, and the transmission column is slidably disposed in the sliding hole.

[0020] As a preferred embodiment of the high-speed disc shaftless motor of the present invention, the outer wall of the rotating cylinder is further provided with an adjusting ring, the outer wall of the rotating cylinder is provided with a spiral groove, the inner wall of the adjusting ring is provided with a protrusion, and the protrusion is slidably disposed on the inner wall of the spiral groove.

[0021] The beneficial effects of this invention are as follows: Through an innovative D-type iron core stator design, high-quality materials and special filling processes enhance magnetic performance; a symmetrical skewed slot structure optimizes operational stability; composite materials and splicing design strengthen the structure; and 3D-printed self-supporting windings aid in loss control. The high-speed disc-type shaftless motor adopts a lightweight rotor topology and adaptable output structure, balancing space efficiency, overall energy efficiency, and versatility across multiple scenarios. The blade design for specific applications further optimizes hydrodynamic performance. The adaptive cooling channel achieves precise heat dissipation through a multi-chamber grid layout, compatible with various cooling media and usage scenarios. Low-resistance design, convenient disassembly and assembly, and extended functions such as flow direction adjustment and backflushing ensure operational stability. The synergistic effect of each module results in high energy efficiency, lightweight design, and low vibration, outperforming traditional solutions in core performance. Furthermore, cost control is achieved through structural reuse and process simplification, giving it strong technological competitiveness. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0023] Figure 1 This is a schematic diagram of the D-type iron core stator in this invention;

[0024] Figure 2 This is a schematic diagram showing the location of the inclined slot in this invention;

[0025] Figure 3 This is a schematic diagram of the stator assembly area in this invention;

[0026] Figure 4 This is a schematic diagram of the external casing of the present invention;

[0027] Figure 5 This is an exploded view of the internal structure of the shell in this invention;

[0028] Figure 6 This is a schematic diagram of the stator and rotor assembly in this invention;

[0029] Figure 7 This is a schematic diagram showing the distribution of the first and second chambers in this invention;

[0030] Figure 8 This is a structural diagram of the connection between the first chamber and the second chamber in this invention;

[0031] Figure 9 This is a schematic diagram of the internal structure of the rotating cylinder in this invention.

[0032] Explanation of reference numerals in the attached diagram: 100, stator core; 101, stator coil winding; 102, slanted slot;

[0033] 200. Shell; 201. Stator core base; 2001. Cylindrical shell; 2002. Pointed shell; 2003. Flow channel; 2004. Inlet; 2005. First chamber; 2006. Second chamber; 2007. Outlet; 2008. Baffle plate; 2009. Rotating ring; 2011. Sliding hole; 2012. Rotating cylinder; 2013. Transmission column; 2014. Adjusting ring; 2015. Spiral groove; 2016. Protruding column; 2022. End cap;

[0034] 300. Dual rotor without back iron; 3001. Limiting block; 3002. First annular groove; 3003. Second annular groove; 3004. Sliding groove;

[0035] 400, Output terminal. Detailed Implementation

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0039] Example 1

[0040] Reference Figures 1-8 This is the first embodiment of the present invention, which provides a D-type iron core stator, specifically including:

[0041] Stator core 100 is D-shaped. Two stator cores 100 are symmetrically spliced ​​together to form a complete stator core. The connection points of each stator core 100 are filled with magnetic adhesive.

[0042] And a stator coil winding 101, on which a slanted slot 102 is provided, and the two ends of the stator core 100 are respectively fitted into the slanted slot 102.

[0043] Among them, the stator coil winding 101 is 3D printed from carbon nylon material and is used to wind the coil;

[0044] The stator core 100 is made of 23QG090 silicon steel sheets, which have obvious anisotropy in magnetic properties and high magnetic induction intensity, thereby improving the power density of the equipment.

[0045] Even better, the stator core 100 is a split semi-elliptical shape with a "D"-shaped outline. After the two stator cores 100 are aligned and glued together, they form a complete stator assembly. The magnetic adhesive filling process is used to improve the permeability u_r of the stator core 100, which increases the air gap magnetic flux density by 19% compared to the conventional solution.

[0046] Furthermore, the mechanical strength of the stator core 100 is increased by 40% due to the epoxy resin-ferrite composite.

[0047] Preferably, the inclined slots 102 on the stator coil winding 101 are symmetrically arranged inclined slots, which form a certain inclination angle with the outer surface of the stator coil winding 101. The inclination angle value is set according to the number of turns of the stator coil winding 101.

[0048] Verification has shown that the skewed slot effect in this embodiment is significantly better than that of ordinary disc motors, with a harmonic distortion rate of only 3%, far lower than the 8% of traditional integer slots, and a 78% reduction in cogging torque.

[0049] Example 2

[0050] Reference Figures 1-8 This is the second embodiment of the present invention, which provides a high-speed disc shaftless motor based on the above-mentioned D-type iron core stator.

[0051] Specifically, a high-speed disc shaftless motor includes a housing 200, which is used to isolate the inside and outside of the motor. The housing 200 includes a central cylindrical shell 2001 and pointed shells 2002 at both ends of the cylindrical shell 2001. The outer walls of the two pointed shells 2002 and the inside of the cylindrical shell 2001 are provided with a connecting flow channel 2003.

[0052] The stator assembly includes two rows of D-type iron core stators arranged in an array, a stator core base 201 located at the end of the D-type iron core stator, and an end cap 2022 embedded in the inner wall of the housing 200.

[0053] The rotor assembly includes a back-iron-less dual rotor 300 rotatably disposed on both sides of the stator assembly end caps, and the back-iron-less dual rotor 300 is rotatably disposed on the inner wall of the housing 200 via bearings.

[0054] Among them, the back-ironless dual rotor 300 structure is lighter and has obvious topological advantages; the back-ironless dual rotor 300 structure of this solution weighs 35kg / 50kW, which is much lighter than the traditional 54kg / 50kW; in terms of space efficiency, the axial length is shortened by 40%; the self-supporting winding eliminates yoke iron loss, reducing iron loss by 50%.

[0055] Even better, it also includes an output component, including an output end 400, which rotates synchronously with the back ironless dual rotor 300 to output power;

[0056] Adaptably, in this embodiment, the output terminal 400 can also adopt a structure such as a rotating shaft to be compatible with a variety of different application scenarios, such as high-speed fan motors and land drive motors.

[0057] Furthermore, in other embodiments, the output end 400 can also be used as a rim propeller, with the output end 400 being an impeller assembly including rotating helical blades. These helical blades utilize the Venturi effect and an asymmetric layout, achieving a thrust density of 189 N / kW, higher than the 142 N / kW of radially symmetrical blades. Fluent flow field simulation comparisons show a 65% reduction in wake vortex intensity, effectively eliminating cavitation at the blade tips.

[0058] Even better, the blade layout adopts a design of 2 helices / 4 blades with a staggered angle of 45°, which makes the distribution of water flow shear force more uniform, further optimizes the hydrodynamic performance of the helical blades, improves the overall efficiency of the propeller, and comprehensively achieves the effects of high energy efficiency, lightweight, high speed and low vibration.

[0059] Example 3

[0060] Reference Figures 1-8 This is the third embodiment of the present invention, which is based on embodiment 2.

[0061] Specifically, the flow channel 2003 includes an inlet 2004, a first chamber 2005, a second chamber 2006, and an outlet 2007. The inlet 2004 and the outlet 2007 are located on the tip shell 2002. The first chamber 2005 and the second chamber 2006 are integrally located inside the cylindrical shell 2001. The cooling medium enters from the inlet 2004 and flows out from the outlet 2007. The flow rate of the cooling medium entering the first chamber 2005 and the second chamber 2006 is controlled according to the temperature distribution of each region.

[0062] Among them, the flow channel 2003 is arranged in a circumferential array on the outer wall of the shell 200 to exchange heat in each area. The first chamber 2005 is a straight cylindrical chamber, and its axial direction coincides with the inlet 2004 and the outlet 2007, and also coincides with the forward direction of the shaftless motor, so that the flow rate of the incoming cooling medium reaches the fastest. That is, the cooling effect is optimal when all the cooling medium passes through the first chamber 2005.

[0063] More preferably, the second chamber 2006 forms an angle with the first chamber 2005 and is connected to the first chamber 2005 located on the other side, thereby forming a grid-shaped heat dissipation mesh that covers various heat-prone areas of the motor.

[0064] In underwater applications, such as wheel flange propulsion, the cooling medium is water flow when the motor moves. As it moves, the water flow passively passes through the flow channel 2003 and undergoes heat exchange. In air applications, the cooling medium is air. In stationary applications, an external coolant can be used as the cooling medium.

[0065] Preferably, the inlet 2004 is in the shape of a bucket with a cut-out opening on one side, which reduces the flow resistance of the cooling medium and keeps the flow rate of the coolant through the inlet 2004 at a high value to ensure the heat exchange effect.

[0066] Meanwhile, in motor models that do not require heat dissipation, the outlet 2007 can serve as mounting screw holes to install and fix the two pointed shells 2002 to the cylindrical shell 2001, reducing costs.

[0067] In underwater or other scenarios, it is fixed by both welding and sealant, and the outlet 2007 and flow channel 2003 serve as heat dissipation holes, thus making it compatible with a variety of usage scenarios.

[0068] Even better, in scenarios requiring disassembly and maintenance, bolts and sealant are used for connection. The bolts are hollow bolts, with one end connected to a one-way valve pipe to facilitate the entry of cooling medium and maintain a suitable working environment temperature while being fixed in place.

[0069] Among them, a baffle plate 2008 is rotatably provided at the connection between the first chamber 2005 and the second chamber 2006. The baffle plate 2008 is a hollow cylinder cut in half. When the baffle plate 2008 rotates, it adjusts the opening of the second chamber 2006.

[0070] Preferably, the second chamber 2006 is opened on the outer wall of the first chamber 2005, and the baffle plate 2008 can rotate against the inner wall of the first chamber 2005. In the initial state, it completely blocks the hole of the second chamber 2006. As the baffle plate 2008 rotates, some cooling medium enters the second chamber 2006. At this time, the cooling medium partially enters the second chamber 2006 and exchanges heat with its inner wall.

[0071] More preferably, the first chamber 2005 can also be set in a different direction than parallel, but symmetrically with the second chamber 2006. In this case, the cooling effect of each chamber is the same, but the flow of the cooling medium is subject to greater resistance and the flow rate decreases, resulting in an increase in overall resistance.

[0072] The first chamber 2005 is also equipped with a rotating ring 2009, which is fixedly connected to the barrier plate 2008 and rotates synchronously. The first chamber 2005 is also equipped with a rotating cylinder 2012, which controls the opening of the rotating ring 2009.

[0073] More preferably, the rotating ring 2009 has a sliding hole 2011, and the rotating cylinder 2012 has a transmission column 2013, which is slidably disposed in the sliding hole 2011.

[0074] The rotating cylinder 2012 can slide up and down relative to the rotating ring 2009. When the rotating cylinder 2012 rotates, it drives the rotating ring 2009 and the baffle plate 2008 to rotate synchronously, thereby adjusting the degree of obstruction of the second chamber 2006 by the baffle plate 2008 and controlling the flow movement mode of the cooling medium.

[0075] Furthermore, an adjusting ring 2014 is slidably provided on the outer wall of the rotating cylinder 2012, a spiral groove 2015 is provided on the outer wall of the rotating cylinder 2012, and a protruding post 2016 is provided on the inner wall of the adjusting ring 2014, with the protruding post 2016 slidably provided on the inner wall of the spiral groove 2015.

[0076] The spiral groove 2015 is a spiral-shaped groove, and the protrusion 2016 slides and contacts its inner wall. While the adjusting ring 2014 slides along the inner wall of the first chamber 2005, it drives the rotating cylinder 2012 to rotate.

[0077] In this embodiment, the adjusting ring 2014 is controlled by a hydraulic cylinder to slide back and forth and cannot rotate on its own. In other embodiments, the displacement of the hydraulic cylinder is controlled by a cooling controller. The cooling controller adjusts the displacement according to the temperature of the second chamber 2006 area, thereby ultimately adjusting the amount of cooling medium entering the chamber.

[0078] Example 4

[0079] Reference Figures 1-9 This is the fourth embodiment of the present invention, which is based on embodiment 3.

[0080] The difference is that in this embodiment, the first chamber 2005 is vertically arranged, and the two second chambers 2006 are symmetrically arranged at a 30° angle with the first chamber 2005, thereby covering more cooling areas;

[0081] Among them, a limiting block 3001 is symmetrically provided on the outer wall of one end of the rotating cylinder 2012, and a first annular groove 3002 and a second annular groove 3003 are also provided on the inner wall of the first chamber 2005, and a sliding groove 3004 is provided between the first annular groove 3002 and the second annular groove 3003.

[0082] More preferably, the first annular groove 3002 and the second annular groove 3003 are circular annular slots, the two annular grooves are parallel to each other, and the sliding groove 3004 penetrates the two annular grooves vertically, so that the limiting block 3001 can rotate along the first annular groove 3002 and the second annular groove 3003 respectively, and switch the position of the annular groove via the sliding groove 3004.

[0083] Preferably, when the limiting block 3001 is located in the slide groove 3004, the barrier plate 2008 completely blocks one of the second chambers 2006. The limiting block 3001 rotates 180° each time, causing the barrier plate 2008 to switch to the other side and block another second chamber 2006, thereby realizing the switching of the flow direction of the heat transfer medium.

[0084] With the above settings, the barrier plate 2008 can only rotate a fixed angle each time, switching between the two side chambers. The control logic includes controlling the cylinder to move a set range based on whether the data provided by the thermal sensor exceeds the threshold. The adjusting ring 2014 and the rotating cylinder 2012 move synchronously until the limit block 3001 enters another annular groove. At this time, the two can rotate relative to each other. The rotating cylinder 2012 rotates 180° to realize the switching of the cooling medium flow direction.

[0085] Even better, when impurities enter and clog the flow channel 2003, they are loosened by the reciprocating movement of the rotating cylinder 2012. At the same time, by controlling the opening and closing of the two adjacent flow channels 2003 and the gate at the outlet 2007, a closed loop is formed, and the cooling medium circulates continuously. After entering from one side inlet 2004, it is backflushed and discharged from the clogged end inlet 2004, thus achieving backflushing and clearing the blockage.

[0086] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended protection.

[0087] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A D-type iron core stator, characterized in that: include: Stator core (100), the stator core (100) is "D" shaped, two stator cores (100) are symmetrically spliced ​​to form a complete stator core, and the connection of each stator core (100) is filled with magnetic adhesive; And a stator coil winding (101), wherein a slanted slot (102) is provided on the stator coil winding (101), and the two ends of the stator core (100) are respectively fitted into the slanted slot (102).

2. A high-speed disc-type shaftless motor, based on a D-type iron core stator as described in claim 1, characterized in that, include: The housing (200) is used to isolate the inside and outside of the motor. The housing (200) includes a central cylindrical shell (2001) and pointed shells (2002) at both ends of the cylindrical shell (2001). The outer walls of the two pointed shells (2002) and the inside of the cylindrical shell (2001) are provided with a communicating flow channel (2003). The stator assembly includes two rows of D-type iron core stators arranged in an array, a stator core base (201) located at the end of the D-type iron core stator, and an end cap (2022) embedded in the inner wall of the housing (200). The rotor assembly includes a back-iron-less dual rotor (300) rotatably disposed on both sides of the stator assembly end caps, the back-iron-less dual rotor (300) being rotatably disposed on the inner wall of the housing (200) via bearings.

3. The high-speed disc-type shaftless motor as described in claim 2, characterized in that: It also includes an output component, including an output terminal (400), which rotates synchronously with the back ironless dual rotor (300) to output power.

4. The high-speed disc-type shaftless motor as described in claim 3, characterized in that: The flow channel (2003) includes an inlet (2004), a first chamber (2005), a second chamber (2006), and an outlet (2007), the inlet (2004) and the outlet (2007) being formed on the tip shell (2002).

5. The high-speed disc-type shaftless motor as described in claim 4, characterized in that: The first chamber (2005) and the second chamber (2006) are integrally disposed inside the cylindrical shell (2001). The cooling medium enters from the inlet (2004) and flows out from the outlet (2007). The flow rate of the cooling medium entering the first chamber (2005) and the second chamber (2006) is controlled according to the temperature distribution of each region.

6. The high-speed disc-type shaftless motor as described in claim 5, characterized in that: A baffle plate (2008) is rotatably provided at the connection between the first chamber (2005) and the second chamber (2006). The baffle plate (2008) is a hollow cylinder cut in half. When the baffle plate (2008) rotates, it adjusts the opening of the second chamber (2006).

7. The high-speed disc-type shaftless motor as described in claim 6, characterized in that: The first chamber (2005) is also equipped with a rotating ring (2009), which is fixedly connected to the barrier plate (2008) and rotates synchronously. The first chamber (2005) is also equipped with a rotating cylinder (2012), which controls the opening of the rotating ring (2009).

8. The high-speed disc-type shaftless motor as described in claim 7, characterized in that: The rotating ring (2009) has a sliding hole (2011), and the rotating cylinder (2012) has a transmission column (2013), which is slidably disposed in the sliding hole (2011).

9. The high-speed disc-type shaftless motor as described in claim 8, characterized in that: The outer wall of the rotating cylinder (2012) is also provided with an adjusting ring (2014), the outer wall of the rotating cylinder (2012) is provided with a spiral groove (2015), the inner wall of the adjusting ring (2014) is provided with a protruding post (2016), and the protruding post (2016) is slidably disposed on the inner wall of the spiral groove (2015).

10. The high-speed disc-type shaftless motor as described in claim 9, characterized in that: The rotating cylinder (2012) has a symmetrically arranged limiting block (3001) on one end of its outer wall. The inner wall of the first chamber (2005) is also provided with a first annular groove (3002) and a second annular groove (3003). A sliding groove (3004) is provided between the first annular groove (3002) and the second annular groove (3003).

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