A coreless axial magnetic field motor

Abstract

The utility model relates to the technical field of motors, and provides an iron-coreless axial magnetic field motor, including a first housing and a second housing, the first housing is buckled on the second housing, two rotors are installed between the first housing and the second housing, the two rotors are arranged oppositely, and both are fixedly installed on a sleeve, a rotating shaft is passed through the sleeve, and the two ends of the rotating shaft are respectively rotatably installed on the first housing and the second housing through bearings, and a stator is sandwiched between the two rotors; the stator includes a stator frame, the stator frame is fixedly installed between the first housing and the second housing, and is fitted with a sleeve gap, and a plurality of stator bodies are arranged on the circumference of the stator frame, and the inner cavity of each stator body is provided with a core, and the core and the stator body are fixed to the stator frame by resin glue. The utility model has a simple structure and manufacturing process, is easy and quick to install, and has high assembly efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an iron core-less axial magnetic field motor. Background Art

[0002] With the advancement of the national energy-saving strategy, the motor industry is developing towards miniaturization, high efficiency and lightweight. The axial flux motor with lighter weight, smaller size and higher efficiency has once again attracted in-depth research and development from all walks of life.

[0003] Compared with traditional radial flux motors, axial flux motors have the advantages of small size, light weight, high torque density, power density, high efficiency, etc. They also have the advantages of energy saving and carbon reduction. In the field of new energy vehicles, the load requirements, technical performance and working environment of motors are higher than those of industrial motors. The application of axial flux can provide more matching power units and powertrains, effectively reduce the total weight of the vehicle, free up design space, improve the energy consumption and stability of the vehicle, and is expected to promote the electric revolution of vehicles.

[0004] At present, there are also some axial magnetic field motors, but the current axial magnetic field motors are difficult to install and the stator manufacturing process is cumbersome. For example, the Chinese utility model patent with patent number CN201821874032.4 and patent name is the rotor of the double-stator axial magnetic field motor. Both sides of the rotor bracket are provided with multiple groups of protrusions. Each group of protrusions includes multiple protrusions, which are arranged at intervals along the circumferential direction of a mounting hole on the periphery of the mounting hole, and each protrusion is provided with a positioning groove on the surface facing the corresponding mounting hole. Each retaining frame has a retaining plate body, multiple first baffles and multiple second baffles. Multiple first baffles are arranged at the edges of both sides of the retaining plate body and are located on both sides of the corresponding permanent magnet. Multiple second baffles are arranged at the edges of both sides of the retaining plate body and are located on both sides of the rotor bracket. The end of each second baffle has a positioning protrusion, which is inserted into a corresponding positioning groove. In the manufacturing process, more first baffles and second baffles are needed, which is troublesome to operate and has low assembly efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an iron-coreless axial magnetic field motor, which has a simple structure and manufacturing process, is easy and quick to install, and has high assembly efficiency.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] An ironless axial magnetic field motor comprises a first housing and a second housing, wherein the first housing is buckled on the second housing, two rotors are installed between the first housing and the second housing, the two rotors are arranged opposite to each other and are fixedly installed on a sleeve, a rotating shaft is passed through the sleeve, two ends of the rotating shaft are rotatably installed on the first housing and the second housing respectively through bearings, and a stator is sandwiched between the two rotors;

[0008] The stator includes a stator frame, which is fixedly installed between the first shell and the second shell and is gap-fitted with the sleeve. A plurality of stator bodies are arranged on a circumference of the stator frame, and a core is provided in the inner cavity of each stator body. The core and the stator body are fixed to the stator frame by resin glue.

[0009] As an improved technical solution, a through hole is provided at the center of the stator frame, and the through hole and the sleeve are gap-fitted;

[0010] A plurality of stator body installation grooves for installing the stator body are arranged on the upper circumference of the stator frame, and the stator body is arranged in the stator body installation grooves;

[0011] Glue pouring grooves for pouring the resin glue are also provided on both sides of the stator frame.

[0012] As an improved technical solution, at least two locating pins are provided on the outer periphery of the stator frame, and the locating pins all pass through the stator frame and extend to the outside of the stator frame. The first shell and the second shell are respectively provided with locating holes corresponding to and matching the locating pins.

[0013] As an improved technical solution, the rotor includes a rotor frame, which is fixed to the end of the sleeve by bolts. A permanent magnet mounting groove is provided on the side of the rotor frame facing the stator. The permanent magnet mounting groove is arranged in an annular structure, and a plurality of permanent magnets are arranged and installed in the permanent magnet mounting groove.

[0014] As an improved technical solution, the thickness of the permanent magnet is equal to the depth of the permanent magnet installation groove;

[0015] The permanent magnet is made of neodymium iron boron magnetic steel.

[0016] As an improved technical solution, the stator body is made of wire windings;

[0017] The core is made of non-magnetic conductive material.

[0018] As an improved technical solution, a first boss is provided on the outer periphery of the first shell near the second shell, and a second boss is provided on the outer periphery of the second shell near the first shell, and the first boss is nested in the second boss;

[0019] A plurality of first connection parts are arranged circumferentially on the outer wall of the first shell, and a plurality of second connection parts are arranged circumferentially on the outer wall of the second shell. The first connection parts are arranged correspondingly to the second connection parts and are fixed by bolt connection.

[0020] As an improved technical solution, a plurality of first heat dissipation plates are arranged on a side of the first shell away from the second shell, and a plurality of second heat dissipation plates are arranged on a side of the second shell away from the first shell;

[0021] The first heat sink and the second heat sink are both arranged radially.

[0022] After adopting the above technical solution, the beneficial effects of the utility model are:

[0023] By setting a first shell and a second shell, the first shell is buckled on the second shell and fixed by bolts, so as to facilitate the fixing of the outer shell of the coreless axial magnetic field motor. Two rotors are installed between the first shell and the second shell. The two rotors are arranged opposite to each other and are fixedly installed on the sleeve. A rotating shaft is passed through the sleeve. The two ends of the rotating shaft are rotatably installed on the first shell and the second shell respectively through bearings. A stator is sandwiched between the two rotors. Since the stator is sandwiched between the two rotors, the two rotors are driven to rotate by the axial magnetic field between the stator and the rotor. The two rotors are connected to the rotating shaft through the sleeve, thereby driving the rotating shaft to rotate. The power density and torque-to-volume ratio are greatly improved through the axial magnetic field structure design.

[0024] The stator includes a stator frame, which is fixedly installed between the first shell and the second shell and is fitted with a sleeve gap. A plurality of stator bodies are arranged on the upper circumference of the stator frame. A core is provided in the inner cavity of each stator body. The core and the stator body are fixed to the stator frame by resin glue. The stator frame is provided to facilitate the fixation of the stator body. The core is provided in the inner cavity of the stator body, and the stator body is supported by the core, which facilitates the stator to be fixed by pouring resin glue. At the same time, since the core is made of non-magnetic conductive material, magnetic damping and iron loss are eliminated, the driving power is reduced, and the iron loss heat source is reduced.

[0025] In summary, the utility model provides an iron-coreless axial magnetic field motor, which has a simple structure and manufacturing process, is easy and quick to install, and has high assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In addition, in the drawings, the components or parts are not necessarily drawn according to the actual scale.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0029] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0030] Figure 4 It is a schematic diagram of the structure of the rotor in the utility model;

[0031] Figure 5 It is a schematic diagram of the structure of the rotor and the first housing in the utility model;

[0032] Figure 6 It is a structural schematic diagram of the stator in the utility model;

[0033] Reference numerals:

[0034] 1. First shell, 101. First boss, 102. First connecting portion, 103. First heat sink, 2. Second shell, 201. Second boss, 202. Second connecting portion, 203. Second heat sink, 3. Rotor, 301. Rotor frame, 302. Permanent magnet mounting groove, 303. Permanent magnet, 4. Sleeve, 5. Rotating shaft, 6. Stator, 601. Stator frame, 602. Stator body, 603. Core, 604. Through hole, 605. Stator body mounting groove, 606. Glue pouring groove, 7. Positioning pin, 8. Positioning hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0038] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0039] like Figure 1-Figure 6 As shown, an ironless axial magnetic field motor comprises a first shell 1 and a second shell 2. The first shell 1 is buckled on the second shell 2 and is fixed by bolts to facilitate the connection and fixation of the shell of the ironless axial magnetic field motor. Two rotors 3 are installed between the first shell 1 and the second shell 2. The two rotors 3 are arranged opposite to each other and are fixedly installed on the sleeve 4. A rotating shaft 5 is passed through the sleeve 4. The rotating shaft 5 and the sleeve 4 can be an integral structure or a split connection structure. The two ends of the rotating shaft 5 are rotatably installed on the first shell 1 and the second shell 2 through bearings respectively. A stator 6 is sandwiched between the two rotors 3. Since the stator 6 is sandwiched between the two rotors 3, the two rotors 3 are driven to rotate by the axial magnetic field between the stator 6 and the rotor 3. The two rotors 3 are connected to the rotating shaft 5 through the sleeve 4, thereby driving the rotating shaft 5 to rotate. The power density and torque-to-volume ratio are greatly improved through the axial magnetic field structure design.

[0040] The stator 6 includes a stator frame 601, which is fixedly installed between the first shell 1 and the second shell 2, and is gap-fitted with the sleeve 4. A plurality of stator bodies 602 are arranged around the stator frame 601. The inner cavity of each stator body 602 is provided with a core 603. The core 603 and the stator body 602 are fixed to the stator frame 601 by resin glue. The stator frame 601 is provided to facilitate the fixation of the stator body 602. The core 603 is provided in the inner cavity of the stator body 602, and the stator body 602 is supported by the core 603, which facilitates the fixation of the stator 6 by pouring resin glue. At the same time, since the core 603 is made of non-magnetic conductive material, magnetic damping and iron loss are eliminated, the driving power is reduced, and the iron loss heat source is reduced.

[0041] like Figure 1-Figure 3 and Figure 6 As shown, a through hole 604 is provided at the center of the stator frame 601, and the through hole 604 is spaced apart from the sleeve 4, so that the sleeve 4 is avoided through the through hole 604;

[0042] A plurality of stator body installation grooves 605 for installing the stator body 602 are arranged on the circumference of the stator frame 601. The stator body 602 is arranged in the stator body installation grooves 605. The stator body installation grooves 605 are provided to facilitate the installation and fixation of the stator body 602.

[0043] Glue pouring grooves 606 for pouring resin glue are respectively provided on both sides of the stator frame 601. The provision of the glue pouring grooves 606 facilitates the pouring of resin glue.

[0044] like Figure 1-Figure 3 and Figure 5-Figure 6 As shown, at least two positioning pins 7 are provided on the outer periphery of the stator frame 601. The positioning pins 7 are symmetrically arranged along the central axis of the stator frame 601. The positioning pins 7 all penetrate the stator frame 601 and extend to the outside of the stator frame 601. The first shell 1 and the second shell 2 are respectively provided with positioning holes 8 corresponding to and matching the positioning pins 7. The positioning pins 7 and the positioning holes 8 are arranged to facilitate positioning of the stator 6.

[0045] like Figure 1-Figure 5 As shown, the rotor 3 includes a rotor frame 301, which is fixed to the end of the sleeve 4 by bolts. A permanent magnet mounting groove 302 is provided on the side of the rotor frame 301 facing the stator 6. The permanent magnet mounting groove 302 is arranged in an annular structure. A plurality of permanent magnets 303 are arranged and installed in the permanent magnet mounting groove 302. The permanent magnet mounting groove 302 is provided to facilitate the installation and fixation of the permanent magnet 303, and the fixing stability is good.

[0046] like Figure 3-Figure 4As shown, the thickness of the permanent magnet 303 is equal to the depth of the permanent magnet installation groove 302. Since the thickness of the permanent magnet 303 is equal to the depth of the permanent magnet installation groove 302, the permanent magnet 303 will not be concave or leak out after being installed in the permanent magnet installation groove 302;

[0047] The permanent magnet 303 is made of neodymium iron boron magnet.

[0048] like Figure 6 As shown, the stator body 602 is made of wire windings;

[0049] The core 603 is made of non-magnetic conductive material.

[0050] like Figure 1-Figure 3 and Figure 5 As shown, a first boss 101 is provided on the outer periphery of the first shell 1 close to the second shell 2, and a second boss 201 is provided on the outer periphery of the second shell 2 close to the first shell 1. The first boss 101 is nested in the second boss 201. By providing the first boss 101 and the second boss 201, and the first boss 101 is nested in the second boss 201, the first shell 1 and the second shell 2 are conveniently installed by snapping together;

[0051] A plurality of first connection parts 102 are arranged circumferentially on the outer wall of the first shell 1, and a plurality of second connection parts 202 are arranged circumferentially on the outer wall of the second shell 2. The first connection parts 102 and the second connection parts 202 are arranged correspondingly and fixed by bolt connection. By providing the first connection parts 102 and the second connection parts 202, it is convenient to fix the first shell 1 and the second shell 2 together.

[0052] like Figure 1-Figure 3 As shown, a plurality of first heat dissipation plates 103 are arranged on a side of the first housing 1 away from the second housing 2, and a plurality of second heat dissipation plates 203 are arranged on a side of the second housing 2 away from the first housing 1;

[0053] The first heat sink 103 and the second heat sink 203 are both arranged radially. The first heat sink 103 and the second heat sink 203 are arranged to facilitate heat dissipation of the coreless axial magnetic field motor. Since the first heat sink 103 and the second heat sink 203 are both arranged radially, air flow channels are formed between adjacent heat sink bodies to ensure heat dissipation performance.

[0054] For ease of understanding, the working process of this embodiment is given below:

[0055] like Figure 1-Figure 6As shown, first, the sleeve 4 is connected and fixed to the rotating shaft 5, and then one of the rotors 3 is installed on one end of the sleeve 4 by bolts. Then, the rotor 3 is placed in the inner cavity of the first shell 1, and the rotating shaft 5 is rotatably installed on the first shell 1 through a bearing. Then, the stator 6 is sleeved on the sleeve 4, and the outer periphery of the stator 6 is fixed to the first shell 1 through a locating pin 7. Then, the other rotor 3 is installed on the other end of the sleeve 4 by bolts. Then, the rotating shaft 5 is rotatably installed on the second shell 2 through a bearing, and the second boss 201 of the second shell 2 is sleeved on the outside of the first boss 101 of the first shell 1. Then, the second connecting portion 202 of the second shell 2 is connected and fixed to the first connecting portion 102 of the first shell 1 by bolts, thereby realizing the installation of the ironless axial magnetic field motor.

[0056] In summary, the utility model provides an iron-coreless axial magnetic field motor, which has a simple structure and manufacturing process, is easy and quick to install, and has high assembly efficiency.

[0057] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. An ironless axial magnetic field motor, characterized in that: It comprises a first shell and a second shell, wherein the first shell is buckled on the second shell, two rotors are installed between the first shell and the second shell, the two rotors are arranged opposite to each other and are fixedly installed on a sleeve, a rotating shaft is passed through the sleeve, and two ends of the rotating shaft are rotatably installed on the first shell and the second shell respectively through bearings, and a stator is sandwiched between the two rotors; The stator includes a stator frame, which is fixedly installed between the first shell and the second shell and is gap-fitted with the sleeve. A plurality of stator bodies are arranged on a circumference of the stator frame, and a core is provided in the inner cavity of each stator body. The core and the stator body are fixed to the stator frame by resin glue.

2. The ironless axial magnetic field motor according to claim 1, characterized in that: A through hole is provided at the center of the stator frame, and the through hole is gap-fitted with the sleeve; A plurality of stator body installation grooves for installing the stator body are arranged on the upper circumference of the stator frame, and the stator body is arranged in the stator body installation grooves; Glue pouring grooves for pouring the resin glue are also provided on both sides of the stator frame.

3. The ironless axial magnetic field motor according to claim 1, characterized in that: At least two positioning pins are arranged on the outer periphery of the stator frame, and the positioning pins all penetrate the stator frame and extend to the outside of the stator frame. The first shell and the second shell are respectively provided with positioning holes corresponding to and matching the positioning pins.

4. The ironless axial magnetic field motor according to claim 1, characterized in that: The rotor comprises a rotor frame, which is fixed to the end of the sleeve by bolts. A permanent magnet mounting groove is provided on the side of the rotor frame facing the stator. The permanent magnet mounting groove is arranged in an annular structure, and a plurality of permanent magnets are arranged and mounted in the permanent magnet mounting groove.

5. The ironless axial magnetic field motor according to claim 4, characterized in that: The thickness of the permanent magnet is equal to the depth of the permanent magnet installation groove; The permanent magnet is made of neodymium iron boron magnetic steel.

6. The ironless axial magnetic field motor according to claim 1, characterized in that: The stator body is made of wire windings; The core is made of non-magnetic conductive material.

7. The ironless axial magnetic field motor according to claim 1, characterized in that: A first boss is provided on the outer periphery of the first shell near the second shell, and a second boss is provided on the outer periphery of the second shell near the first shell, wherein the first boss is nested in the second boss; A plurality of first connection parts are arranged circumferentially on the outer wall of the first shell, and a plurality of second connection parts are arranged circumferentially on the outer wall of the second shell. The first connection parts are arranged correspondingly to the second connection parts and are fixed by bolt connection.

8. The ironless axial magnetic field motor according to claim 1, characterized in that: A plurality of first heat dissipation plates are arranged on a side of the first shell away from the second shell, and a plurality of second heat dissipation plates are arranged on a side of the second shell away from the first shell; The first heat sink and the second heat sink are both arranged radially.

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