Magnetic flux motor and vehicle

Abstract

The invention provides a magnetic flux motor and a vehicle. The magnetic flux motor comprises a stator and a rotor assembly. The stator comprises a first stator part and a second stator part which are distributed in the axial direction, the first stator part and the second stator part are annular, and the projection of the first stator part in the axial direction is located in the second stator part; the rotor assembly is arranged in the second stator part in the radial direction, and the rotor assembly and the first stator part are distributed in the axial direction. According to the invention, a radial magnetic flux loop is formed between the rotor assembly and the second stator part, an axial magnetic flux loop is formed between the rotor assembly and the first stator part, radial and axial magnetic flux is guided at the same time, the magnetic flux utilization rate is improved, magnetic circuits in two directions are effectively isolated, the magnetic leakage phenomenon and interference between the magnetic circuits in the two directions are reduced, and the reliability of the motor is improved. And the overall output power of the motor is improved, so that the motor can show excellent performance in low-speed high-torque and high-speed high-power scenes.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and specifically relates to a flux motor and a vehicle. Background Art

[0002] Permanent magnet synchronous motor is a synchronous motor that uses permanent magnets to generate magnetic fields. Its working principle is based on the interaction between the rotating magnetic field generated by the stator and the magnetic field generated by the permanent magnets on the rotor, so that the permanent magnets can generate a strong magnetic field when rotating, thereby providing greater output torque, and have the advantages of high efficiency, good dynamic response performance and low noise. The traditional permanent magnet synchronous motor is a radial flux circuit or an axial flux circuit, and the flux circuit is relatively simple. In a radial flux motor, the magnetic flux lines are conducted radially from the inside of the rotor through the outside of the stator. This type of motor exhibits higher power output under high-speed conditions, but has lower efficiency under low-speed and high-torque conditions. In an axial flux motor, the magnetic flux lines are conducted along the axial direction of the motor, relying on the interaction between the rotor and the stator end face to generate torque. This type of motor usually has a higher power density and is suitable for low-speed and high-torque application scenarios, but its efficiency and performance are limited in high-speed application scenarios. However, in actual applications, the motor needs to provide both high torque at low speed and high power at high speed. Therefore, in order to take into account the above two aspects, the relevant technology designs a hybrid flux permanent magnet synchronous motor.

[0003] In the related art, a modular dual-rotor structure is usually adopted, that is, a group of rotors are designed in the axial direction and the radial direction respectively, forming a magnetic flux path with the stator core in the axial direction and the radial direction.

[0004] In the related art, the magnetic flux path is relatively complex, and due to the design of a dual-rotor structure, the structural complexity is relatively high, which increases the manufacturing cost and technical difficulty. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a flux motor and a vehicle, which can solve the problem of the relatively complex structure of the hybrid flux motor in the related art.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a flux motor, including a stator and a rotor assembly;

[0008] The stator comprises a first stator part and a second stator part distributed along the axial direction, the first stator part and the second stator part are both annular, and the projection of the first stator part along the axial direction is located inside the second stator part;

[0009] The rotor assembly is radially arranged inside the second stator portion, and the rotor assembly and the first stator portion are distributed axially.

[0010] Optionally, the rotor assembly includes a mounting bracket, a first magnet and a second magnet;

[0011] The mounting bracket is annular, the first magnet is arranged inside the mounting bracket, and the first magnet and the first stator part are distributed along the axial direction;

[0012] The second magnet is circumferentially disposed at an outer edge of the mounting bracket, and radially disposed between the first magnet and the second stator portion.

[0013] Optionally, the rotor assembly further comprises a first support member;

[0014] The first support member is in a disc shape, the first magnet is fixed on the first support member, and the first support member is embedded in the inner side of the mounting bracket.

[0015] Optionally, the rotor assembly further comprises a second support member;

[0016] The second support member is annular in shape, the second magnet is fixed on the second support member, and the second support member is fixed to the outside of the mounting bracket.

[0017] Optionally, further comprising a winding;

[0018] The first stator portion is provided with a mounting groove on its outer side, and the winding is wound on the mounting groove.

[0019] Optionally, a gap a is defined between the first magnet and the first stator portion in the axial direction, and a gap b is defined between the second magnet and the second stator portion in the radial direction, wherein 0.5 mm ≤ a ≤ 1 mm, and 0.5 mm ≤ b ≤ 1 mm.

[0020] Optionally, the outer diameter of the first stator part is D1, the outer diameter of the second stator part is D2, the radial thickness of the first stator part is L1, and the axial distance between the ends of the first stator part and the second stator part close to the rotor assembly is L2, 0.6≤D1 / D2≤0.8, 0.8≤L2 / L1≤1.5.

[0021] Optionally, the gap between the first magnet and the first stator part, the gap between the second magnet and the second stator part, the interior of the first stator part and the interior of the second stator part are connected to form a heat dissipation channel.

[0022] Optionally, the second support member and the second magnet are bonded or magnetically connected, and / or the first support member and the first magnet are bonded or magnetically connected.

[0023] In a second aspect, an embodiment of the present application also provides a vehicle, comprising the above-mentioned flux motor.

[0024] The flux motor provided in the embodiment of the present application includes a stator and a rotor assembly. The stator, i.e., the stator core, is composed of a first stator part and a second stator part, both of which are annular and distributed along the axial direction, and the projection of the first stator part along the axial direction is located inside the second stator part, so that the first stator part and the second stator part form a double-layer special-shaped structure, wherein the first stator part is the inner stator core and the second stator part is the outer stator core. The rotor assembly is arranged inside the second stator part along the radial direction of the stator, so that a radial magnetic flux loop is formed between the rotor assembly and the second stator part. At the same time, the rotor assembly is distributed axially between the axial direction of the stator and the first stator part, so that an axial magnetic flux loop is formed between the rotor assembly and the first stator part. That is, a set of stator structures and a set of rotor structures are used to guide radial and axial magnetic fluxes at the same time, thereby improving the utilization rate of magnetic flux and reducing magnetic leakage. Compared with the related art, on the basis of realizing efficient magnetic energy conversion, the structure is simpler, and the manufacturing cost and technical difficulty are reduced.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a schematic diagram of the structure of a flux motor provided in an embodiment of the present application;

[0028] Figure 2 is an exploded diagram of the flux motor structure provided in an embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the stator structure of an embodiment of the present application;

[0030] Figure 4 This is an embodiment of the present application Figure 3 Schematic diagram along direction A;

[0031] Figure 5 This is an embodiment of the present application Figure 4 Middle section view along BB direction;

[0032] Figure 6 is a schematic diagram of stator structural parameters of an embodiment of the present application;

[0033] Figure 7is a schematic diagram of the structure of a rotor assembly according to an embodiment of the present application;

[0034] Figure 8 This is an embodiment of the present application Figure 7 Schematic diagram along the C direction;

[0035] Fig. 9 This is an embodiment of the present application Figure 8 Middle section view along DD direction;

[0036] Fig.10 is a schematic diagram of a magnetic flux path of a magnetic flux motor according to an embodiment of the present application;

[0037] Fig.11 It is a schematic diagram of the heat dissipation channel of the flux motor according to an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 1-stator, 11-first stator part, 111-mounting groove, 12-second stator part, 13-connecting part, 2-rotor assembly, 21-mounting bracket, 22-first magnet, 23-second magnet, 24-first support member, 241-first through hole, 25-second support member, 251-second through hole, 3-winding, 4-heat dissipation channel. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] The flux motor and vehicle provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0043] Reference Figure 1 to Figure 2An embodiment of the present application provides a flux motor, including a stator 1 and a rotor assembly 2; the stator includes a first stator portion 11 and a second stator portion 12 distributed along the axial direction, the first stator portion 11 and the second stator portion 12 are both annular, and the axial projection of the first stator portion 11 is located inside the second stator portion 12; the rotor assembly 2 is radially arranged inside the second stator portion 12, and the rotor assembly 2 and the first stator portion 11 are distributed along the axial direction.

[0044] In the embodiments of the present application, Figure 1 to Figure 2 As shown, an axial and radial hybrid flux motor is shown, including a stator 1 and a rotor assembly 2. The stator 1, also known as the stator core, is composed of a first stator part 11 and a second stator part 12. The first stator part 11 and the second stator part 12 are both annular and have an internal space. The first stator part 11 and the second stator part 12 are distributed along the axial X direction, and the connecting part 13 is connected between the first stator part 11 and the second stator part 12. The connecting part 13 is also annular. Since in the embodiment of the present application, the inner and outer diameters of the first stator part 11 are smaller than the inner and outer diameters of the second stator part 12, the outer diameter of the connecting part 13 gradually increases along the positive X direction, so that the stator core forms a trumpet-shaped structure. The projection of the first stator part 11 along the axial X direction is located within the second stator part 12, and as shown Figures 3 to 5 As shown, the first stator part 11 can partially extend into the interior of the second stator part 12 to enhance the structural connection strength and avoid magnetic leakage. Therefore, the first stator part 11 and the second stator part 12 form a double-layer special-shaped structure, wherein the first stator part 11 is the inner stator core and the second stator part 12 is the outer stator core. In addition, the flux motor also includes a shaft and an end cover, the shaft drives the rotation of the rotor assembly 2, and the end cover is used to protect and support the internal structure of the motor.

[0045] It should be noted that the stator of the embodiment of the present application can form a multi-layer special-shaped structure, and can be composed of at least three annular stator parts distributed along the axial direction. The inner and outer diameters of different stator parts are different, which is suitable for a more complex structure of the rotor assembly 2. That is, the stator 1 is not limited to a double-layer special-shaped structure, and technical personnel in this field can make design improvements according to actual needs.

[0046] In the embodiments of the present application, Fig.10As shown, the rotor assembly 2 is arranged inside the second stator part 12 along the radial direction of the stator, and a radial magnetic flux loop is formed between the rotor assembly 2 and the second stator part 12. At the same time, the rotor assembly 2 is axially distributed between the first stator part 11 along the axial direction of the stator, and an axial magnetic flux loop is formed between the rotor assembly 2 and the first stator part 11. Based on the principle that magnetic flux will form a closed loop along the shortest path under the same medium, this double-layer special-shaped stator core structure provides independent magnetic flux paths in the radial and axial directions, which helps to separate the axial magnetic flux from the radial magnetic flux and conduct it in a predetermined direction, thereby achieving effective guidance of the axial and radial magnetic fluxes, effectively isolating the magnetic circuits in two directions, and reducing magnetic leakage and interference between the magnetic circuits in two directions. This dual magnetic flux path design can balance the magnetic flux distribution, avoid the concentration of magnetic flux in a single direction, improve the utilization rate of magnetic flux, reduce the risk of magnetic saturation and energy loss, and effectively improve the efficiency of the motor, which is suitable for the application scenarios of high-efficiency magnetic flux motors.

[0047] The flux motor provided by the embodiment of the present application has a double-layer special-shaped stator structure, which provides independent flux paths in two directions: an axial flux loop is formed between the rotor assembly and the first stator part, and a radial flux loop is formed between the rotor assembly and the second stator part, that is, a set of stator structures and a set of rotor structures are used to guide radial and axial magnetic fluxes at the same time, thereby improving the utilization rate of magnetic flux and effectively isolating the magnetic circuits in two directions, reducing magnetic leakage and interference between magnetic circuits in two directions, and improving the overall output power of the motor, so that the motor can show excellent performance in both low-speed high-torque and high-speed high-power scenarios. Compared with related technologies, on the basis of achieving efficient magnetic energy conversion, the structure is simpler, reducing manufacturing costs and technical difficulties. At the same time, it is conducive to reducing the axial space of the motor and enhancing the compactness of the motor.

[0048] Optionally, refer to Figure 2 The rotor assembly 2 includes a mounting bracket 21, a first magnet 22 and a second magnet 23; the mounting bracket 21 is annular, the first magnet 22 is arranged on the inner side of the mounting bracket 21, and the first magnet 22 and the first stator part 11 are distributed axially; the second magnet 23 is circumferentially arranged on the outer edge of the mounting bracket 21, and the second magnet 23 is radially arranged between the first magnet 22 and the second stator part 12.

[0049] In the embodiments of the present application, Figure 2 As shown, combined with Figures 7 to 9As shown in the figure, the rotor assembly 2 includes a mounting bracket 21, a first magnet 22 and a second magnet 23. The mounting bracket 21 is annular and is also called a disc rotor. The first magnet 22 is also called an axial permanent magnet and is arranged on the inner side of the mounting bracket 21. The first magnet 22 is annular as a whole and can be designed as a single piece or multiple permanent magnets distributed circumferentially. It should be noted that the first magnet 22 can be directly fixed to the mounting bracket 21, for example, the first magnet 22 can be fixed to the mounting bracket 21 using a fixing device such as a mechanical clamp, a bolt or a spring, or fixed to the mounting bracket 21 through a support frame. The first magnet 22 and the first stator part 11 are distributed in the axial X direction, and an axial magnetic flux loop is formed between the first magnet 22 and the first stator part 11. The second magnet 23 is also called a radial permanent magnet and is arranged on the outer edge of the mounting bracket 21 in the circumferential direction. The second magnet 23 is radially arranged between the first magnet 22 and the second stator part 12. The second magnet 23 is annular as a whole, and can also be designed as a single piece or multiple pieces of permanent magnets distributed circumferentially. It should be noted that the second magnet 23 can be directly fixed to the mounting bracket 21, for example, the second magnet 23 can be fixed to the mounting bracket 21 using a fixing device such as a mechanical clamp, a bolt or a spring, or fixed to the mounting bracket 21 through a support frame. The second magnet 23 and the first stator part 11 are distributed axially, and an axial magnetic flux loop is formed between the second magnet 23 and the first stator part 11. The axial and radial directions propagate along the designed magnetic flux paths respectively, ensuring the concentration and utilization efficiency of the magnetic field. The design of the combination of radial and axial magnetic fluxes can enable the motor to generate more power at the same volume while reducing magnetic energy loss. In the embodiment of the present application, the materials that can be selected for the first magnet 22 and the second magnet 23 include but are not limited to rare earth neodymium iron boron material, samarium cobalt or ferrite, among which the rare earth neodymium iron boron material has a high magnetic energy product and excellent magnetic properties, thereby improving the output torque and power density of the motor, so that the motor can provide higher output performance at the same volume.

[0050] The embodiment of the present application optimizes the arrangement of axial and radial permanent magnets to achieve dual utilization of radial and axial magnetic fluxes, improve the magnetic flux coupling efficiency, and thus improve the magnetic flux utilization rate and overall output power of the motor.

[0051] In addition, in some embodiments, magnetic isolation material may be added between the stator 1 and the rotor assembly 2 to force the radial and axial magnetic fluxes to be directed to different paths, respectively, to achieve isolation of the radial magnetic flux and the axial magnetic flux.

[0052] Optionally, refer to Figure 2 The rotor assembly 2 further includes a first support member 24 ; the first support member 24 is disc-shaped, the first magnet 22 is fixed on the first support member 24 , and the first support member 24 is embedded in the inner side of the mounting bracket 21 .

[0053] In the embodiments of the present application, Figure 2As shown, combined with Figures 7 to 9 As shown in the figure, in order to improve the fixing strength of the first magnet 22, the first magnet 22 is fixed to the first support member 24. The first support member 24, that is, the axial support frame, is annular, and a plurality of first through holes 241 are axially arranged thereon, and a first magnet 22 is embedded and fixed in each first through hole 241. The plurality of first magnets 22 and the plurality of first through holes 241 are distributed circumferentially in a one-to-one correspondence. The outer diameter of the first support member 24 is slightly smaller than the inner diameter of the mounting bracket 21, and is fixed to the inner side of the mounting bracket 21. This embodiment uses a support member and an embedded fixing method to enhance the reliability of the fixation of the first magnet 22, ensure the stability of the permanent magnet during high-speed rotation, prevent the permanent magnet from loosening or falling off, and improve the reliability and service life of the motor.

[0054] Optionally, refer to Figure 2 The rotor assembly 2 further includes a second support member 25 ; the second support member 25 is annular, the second magnet 23 is fixed on the second support member 25 , and the second support member 25 is fixed to the outside of the mounting bracket 21 .

[0055] In the embodiments of the present application, Figure 2 As shown, combined with Figures 7 to 9 As shown in the figure, in order to improve the fixing strength of the second magnet 23, the second magnet 23 is fixed to the second support member 25. The second support member 25, i.e., the radial support frame, is annular, and a plurality of second through holes 251 are radially arranged thereon, and a second magnet 23 is embedded and fixed in each second through hole 251. The plurality of second magnets 23 and the plurality of second through holes 251 are distributed circumferentially in a one-to-one correspondence. The outer diameter of the second support member 25 is slightly larger than the outer diameter of the mounting bracket 21, and the second support member 25 is fixed to the outside of the mounting bracket 21. This embodiment uses a support member and an embedded fixing method to enhance the reliability of the fixation of the second magnet 23, ensure the stability of the permanent magnet during high-speed rotation, prevent the permanent magnet from loosening or falling off, and improve the reliability and service life of the motor.

[0056] Optionally, refer to Figure 2 and Fig.10 , further comprising a winding 3; a mounting groove 111 is provided on the outer side of the first stator part 11, and the winding 3 is wound on the mounting groove 111.

[0057] In the embodiments of the present application, Figure 2 and Fig.10As shown, the winding 3 is a stator winding, and the first stator part 11 is also called an iron core column, and a mounting groove 111 is arranged on the outer side thereof. The winding 3 is wound on the mounting groove 111, and is a phase or the entire electromagnetic circuit composed of multiple coils or coil groups. The embodiment of the present application designs a single set of windings 3, which is wound on the iron core column to achieve a radial and axial mixed magnetic flux path, thereby reducing the manufacturing difficulty of the winding 3 and improving the manufacturing efficiency. For the layout of the winding 3, a concentrated winding type or a distributed winding type can be adopted. When a concentrated winding type is adopted, the conduction of the magnetic flux is more concentrated and the leakage magnetic flux is reduced. When a distributed winding type is adopted, the radial and axial winding paths can be separated, and the structure is relatively complex, but the interference between the magnetic circuits in the two directions is effectively avoided.

[0058] Optionally, refer to Fig.10 There is a gap a between the first magnet 22 and the first stator part 11 in the axial direction, and there is a gap b between the second magnet 23 and the second stator part 12 in the radial direction, 0.5mm≤a≤1mm, 0.5mm≤b≤1mm.

[0059] In the embodiments of the present application, Fig.10 As shown, a certain air gap is left between the stator 1 and the rotor assembly 2, and the size of the air gap can be adjusted according to the specific operating requirements of the motor to ensure that the magnetic flux can flow freely through the air gap and reduce losses. The air gap includes an axial air gap and a radial air gap. The axial air gap refers to the gap a between the first magnet 22 and the first stator part 11 along the axial direction, and the radial air gap refers to the gap b between the second magnet 23 and the second stator part 12 along the radial direction. In the embodiment of the present application, 0.5mm≤a≤1mm, 0.5mm≤b≤1mm. When the gap is too small, such as less than 0.5mm, the distance between the stator 1 and the rotor assembly 2 is too small, and the magnetic flux cannot flow freely between the air gaps, thereby increasing the motor load, resulting in a decrease in motor efficiency, and affecting the heat dissipation effect of the motor. When the gap is too large, such as greater than 1mm, it will accelerate the vibration and electromagnetic noise of the motor, and make the distribution of the magnetic field worse, reducing the electromagnetic conversion efficiency. Exemplarily, the gap a and the gap b in the embodiment of the present application may be designed with reference values ​​of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm and 1 mm.

[0060] Optionally, refer to Figure 6 The outer diameter of the first stator part 11 is D1, the outer diameter of the second stator part 12 is D2, the radial thickness of the first stator part 11 is L1, and the axial distance between the ends of the first stator part 11 and the second stator part 12 close to the rotor assembly 2 is L2, 0.6≤D1 / D2≤0.8, 0.8≤L2 / L1≤1.5.

[0061] In the embodiments of the present application, Figure 6As shown, the outer diameter of the first stator part 11 is D1, and the outer diameter of the second stator part 12 is D2. The ratio between the two characterizes the shape structure of the motor, 0.6≤D1 / D2≤0.8. When the D1 / D2 value is too small, such as less than 0.6, the magnetic flux path of the first stator part 11, i.e. the inner stator, will be narrow, restricting the flow of axial magnetic flux and easily causing magnetic flux saturation problems. When the D1 / D2 value is too large, such as greater than 0.8, the axial magnetic flux path will take up too much space and interfere with the radial magnetic flux, resulting in enhanced magnetic field coupling between the two magnetic flux paths, thereby causing magnetic leakage or motor loss. When D1 / D2 is in the range of 0.6 to 0.8, the motor can achieve effective distribution of the magnetic flux path. It should be noted that, Figure 6 As shown in FIG. , R1=D1 / 2 and R2=D2 / 2.

[0062] In the embodiments of the present application, Figure 6 As shown, the thickness of the first stator part 11 in the radial direction, i.e., the length of the axial magnetic flux section, is L1, and the distance between the right end of the first stator part 11 and the second stator part 12, i.e., the length of the radial magnetic flux section, is L2. The ratio between the two represents the relative size between the radial magnetic flux intensity and the axial magnetic flux intensity, 0.8≤L2 / L1≤1.5. In comparison, the axial flux motor can provide a longer lever arm and a higher magnetic flux density, and can generate a larger torque under low speed and high load conditions. The radial flux motor can maintain efficient operation and reduce energy loss at high speed due to its compact structure, small inertia and short magnetic flux path. When L2 / L1 is 0.8, it is suitable for low speed and high torque working conditions, and the axial magnetic flux output capacity is strong. When L2 / L1 is 1.0, the motor can provide better compatibility between low speed and high torque and high speed. When L2 / L1 is 1.5, it is suitable for high speed working conditions, and the radial magnetic flux output capacity is strong. When L2 / L1 is between 0.8 and 1.5, both radial and axial magnetic fluxes can maintain high magnetic energy utilization efficiency in their respective paths, which is conducive to better motor output performance.

[0063] In some embodiments, when the ratios of D1 / D2 and L2 / L1 decrease, the motor is thinner and has a larger diameter, and is more suitable for low-speed and high-torque working conditions; when the ratios of D1 / D2 and L2 / L1 increase, the motor is thicker and has a smaller diameter, and is more suitable for high-speed working conditions.

[0064] Optionally, refer to Fig.11 , a gap between the first magnet 22 and the first stator part 11 , a gap between the second magnet 23 and the second stator part 12 , and the interior of the first stator part 11 and the interior of the second stator part 12 are connected to form a heat dissipation channel 4 .

[0065] In the embodiments of the present application, Fig.11As shown, the axial gap between the first magnet 22 and the first stator part 11, the radial gap between the second magnet 23 and the second stator part 12, the internal space of the first stator part 11, and the internal space of the second stator part 12 are connected to form an air-cooled heat dissipation channel 4. Through the heat dissipation channel 4, cold air enters the motor, passes through the stator 1 and the rotor assembly 2, and finally flows out of the motor, taking away the heat generated during the operation of the motor, thereby ensuring that the motor can maintain a safe operating temperature during long-term operation. This is conducive to extending the service life of the motor and avoiding performance degradation due to long-term high temperature conditions.

[0066] Optionally, refer to Figure 2 The second support member 25 and the second magnet 23 are bonded or magnetically connected, and / or the first support member 24 and the first magnet 22 are bonded or magnetically connected.

[0067] In the embodiments of the present application, Figure 2 As shown, the second magnet 23 is fixed on the second support member 25 by an embedded method, and in order to strengthen the fixing effect, the second magnet 23 and the second support member 25 are connected by an adhesive or a magnetic adhesive material. The first magnet 22 is fixed on the first support member 24 by an embedded method, and in order to strengthen the fixing effect, the first magnet 22 and the first support member 24 are also connected by an adhesive or a magnetic adhesive material to ensure the firmness of the permanent magnet fixation. This double fixing method can not only prevent the permanent magnet from loosening during the rotation of the rotor, but also ensure the long-term and stable operation of the permanent magnet under the conditions of high speed and high torque of the motor, thereby extending the service life of the motor.

[0068] The embodiment of the present application also provides a vehicle, including the flux motor in the above embodiment. The flux motor adopts a special-shaped multi-layer stator structure, guides radial and axial magnetic fluxes at the same time, improves the utilization rate of magnetic flux, and effectively isolates the magnetic circuits in two directions, reduces magnetic leakage and interference between magnetic circuits in two directions, improves the overall output power of the motor, and thus improves the power performance of the vehicle.

[0069] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0070] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A flux motor, characterized in that: It comprises a stator (1) and a rotor assembly (2); The stator comprises a first stator portion (11) and a second stator portion (12) distributed along the axial direction, the first stator portion (11) and the second stator portion (12) are both annular, and the projection of the first stator portion (11) along the axial direction is located inside the second stator portion (12); The rotor assembly (2) is radially arranged inside the second stator part (12), and the rotor assembly (2) and the first stator part (11) are distributed along the axial direction.

2. The flux motor according to claim 1, characterized in that: The rotor assembly (2) comprises a mounting bracket (21), a first magnet (22) and a second magnet (23); The mounting bracket (21) is annular in shape, the first magnet (22) is arranged inside the mounting bracket (21), and the first magnet (22) and the first stator part (11) are distributed along the axial direction; The second magnet (23) is arranged at the outer edge of the mounting bracket (21) along the circumferential direction, and the second magnet (23) is arranged between the first magnet (22) and the second stator part (12) along the radial direction.

3. The flux motor according to claim 2, characterized in that: The rotor assembly (2) further comprises a first support member (24); The first support member (24) is in the shape of a disk, the first magnet (22) is fixed on the first support member (24), and the first support member (24) is embedded in the inner side of the mounting bracket (21).

4. The flux motor according to claim 3, characterized in that: The rotor assembly (2) further comprises a second support member (25); The second support member (25) is annular in shape, the second magnet (23) is fixed on the second support member (25), and the second support member (25) is fixed on the outside of the mounting bracket (21).

5. The flux motor according to claim 1, characterized in that: Also includes a winding (3); An installation groove (111) is provided on the outside of the first stator part (11), and the winding (3) is wound on the installation groove (111).

6. The flux motor according to claim 2, characterized in that: There is a gap a between the first magnet (22) and the first stator part (11) in the axial direction, and there is a gap b between the second magnet (23) and the second stator part (12) in the radial direction, 0.5 mm ≤ a ≤ 1 mm, 0.5 mm ≤ b ≤ 1 mm.

7. The flux motor according to claim 1, characterized in that: The outer diameter of the first stator part (11) is D1, the outer diameter of the second stator part (12) is D2, the radial thickness of the first stator part (11) is L1, and the axial distance between the ends of the first stator part (11) and the second stator part (12) close to the rotor assembly (2) is L2, 0.6≤D1 / D2≤0.8, 0.8≤L2 / L1≤1.

5.

8. The flux motor according to claim 6, characterized in that: The gap between the first magnet (22) and the first stator part (11), the gap between the second magnet (23) and the second stator part (12), the interior of the first stator part (11) and the interior of the second stator part (12) are connected to form a heat dissipation channel.

9. The flux motor according to claim 4, characterized in that: The second support member (25) and the second magnet (23) are bonded or magnetically connected, and / or the first support member (24) and the first magnet (22) are bonded or magnetically connected.

10. A vehicle, characterized in that: A flux motor comprising the one of claims 1 to 9.

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