Magnetic wheel set, wind power generation device and energy storage equipment
By alternating permanent magnets in the magnetic wheel assembly and forming an annular groove on the shaft surface, the magnetic contact area is increased, solving the problems of low transmission stability and efficiency, and achieving more efficient wind power generation.
Patent Information
- Application Number
- CN202520054160.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-09
AI Technical Summary
The magnet assembly of existing orthogonal magnetic wheels is cylindrical in shape, resulting in a small magnetic field contact area, which leads to poor stability, low torque, and low efficiency during transmission.
A magnetic wheel assembly was designed, in which the positive and negative poles of permanent magnets are arranged alternately along the circumference of the rotating shaft, and an annular groove is formed by recessing on the surface opposite to the rotating shaft to increase the magnetic contact area between the magnet assemblies. A protective shell is used to wrap the magnet assemblies and form corresponding slots at the annular grooves. The rotating axes of the two magnetic wheels are set at an angle or perpendicularly, and the annular grooves are interlocked to improve the magnetic contact area.
It enhances magnetic strength, improves transmission capacity and stability, and increases the efficiency of wind power generation devices.
Smart Images
Figure CN223729622U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of energy storage devices, in particular to a magnetic wheel set, a wind power generation device and an energy storage device. BACKGROUND
[0002] Wind energy is an important part of the current renewable energy field. Wind power generation devices are used to convert wind energy into electrical energy, and by introducing energy storage battery technology in wind power generation, wind energy can be stored when the wind speed is high or stable for use when the wind speed is low or there is no wind.
[0003] The direct-orthogonal magnetic wheel can be applied to a wind power generation device and has played an important role in industrial automation, robot technology and material handling. It realizes non-mechanical contact power transmission by using the principle of mutual attraction of strong magnets. When the driving magnetic wheel rotates, the magnetic pole position changes, and through the mutual action of adjacent magnetic poles, the driven magnetic wheel rotates.
[0004] The magnet assembly of the current direct-orthogonal magnetic wheel is in the shape of a cylinder, and the magnetic field contact area of the two magnetic wheels is small. There are problems such as poor stability, small torque and low efficiency in the transmission process. CONTENT OF THE INVENTION
[0005] In view of the problems in the background art, the purpose of the present application is to provide a magnetic wheel set, a wind power generation device and an energy storage device, which overcome the above problems or at least partially solve the above problems.
[0006] According to a first aspect of the present application, a magnetic wheel set is provided, comprising two magnetic wheels, the magnetic wheel comprising a rotating shaft and a magnet assembly. The magnet assembly comprises a plurality of permanent magnets arranged in sequence along the circumference of the rotating shaft. The positive and negative poles of the plurality of permanent magnets are arranged alternately along the circumference of the rotating shaft. The surface of the magnet assembly facing away from the rotating shaft is recessed to form a first annular groove, and the first annular groove is arranged around the axis of the rotating shaft.
[0007] In one or more optional embodiments described above, the cross section of the first annular groove is arc-shaped.
[0008] In one or more optional embodiments described above, the magnetic wheel comprises a protective shell, the magnet assembly is arranged in the protective shell, the protective shell is sleeved on the rotating shaft, and the protective shell is recessed at the first annular groove to form a second annular groove with the same shape as the first annular groove.
[0009] In one or more optional embodiments described above, the magnetic wheel set comprises two magnetic wheels, and the axes of the rotating shafts of the two magnetic wheels are arranged at an angle.
[0010] In one or more optional embodiments above, the axes of the rotating shafts of the two magnetic wheels are arranged perpendicularly.
[0011] In one or more optional embodiments above, the two first annular grooves are arranged inlaidly.
[0012] According to a second aspect of the present application, a wind power generation device is provided, which comprises a magnetic wheel set, an impeller and a generator as described above. One of the magnetic wheels is connected with the impeller, and the other of the magnetic wheels is connected with the generator.
[0013] In one or more optional embodiments above, the wind power generation device comprises a housing, and the two magnetic wheels are arranged in the housing. The rotating shaft of one of the magnetic wheels penetrates the housing, and the rotating shaft of the magnetic wheel is connected with the impeller outside the housing. One end of the rotating shaft of the other of the magnetic wheels is connected with the motor shaft of the generator.
[0014] In one or more optional embodiments above, the impeller comprises a first impeller and a second impeller, and the first impeller and the second impeller are respectively connected with the two ends of the rotating shaft.
[0015] According to a third aspect of the present application, an energy storage device is provided, which comprises an energy storage battery and a wind power generation device as described above. The energy storage battery is connected with the wind power generation device.
[0016] The magnetic wheel set provided by the present application comprises two magnetic wheels. The magnetic wheel comprises a rotating shaft and a magnet assembly. The magnet assembly comprises a plurality of permanent magnets arranged in sequence along the circumference of the rotating shaft. The positive and negative poles of the plurality of permanent magnets are arranged alternately along the circumference of the rotating shaft. Specifically, the permanent magnet comprises two opposite ends, and the two opposite ends are respectively arranged as positive and negative poles. The positive and negative poles of adjacent permanent magnets are arranged reversely. The surface of the magnet assembly opposite to the rotating shaft is recessed to form a first annular groove, and the first annular groove is arranged around the axis of the rotating shaft. When the magnetic wheel is applied to the magnetic wheel set, the two first annular grooves are arranged inlaidly. Compared with the traditional straight-cross magnetic wheel, the magnetic force contact area between the magnet assemblies of the two magnetic wheels is increased, and thus the magnetic force strength is enhanced, and the transmission capacity is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.
[0018] Figure 1FIG. 2 is a schematic view of relative positions of two magnet assemblies of a magnetic wheel set in the related art;
[0019] Figure 2 FIG. 4 is a schematic view when viewed in the axial direction of one magnet assembly in FIG. 3; Figure 1
[0020] Figure 3 FIG. 5 is a perspective view of a magnetic wheel according to an embodiment of the present application;
[0021] Figure 4 FIG. 6 is a perspective view of a magnetic wheel according to an embodiment of the present application;
[0022] Figure 5 FIG. 7 is a partial exploded view of a magnetic wheel according to an embodiment of the present application;
[0023] Figure 6 FIG. 8 is a schematic view of relative positions of two magnet assemblies of a magnetic wheel set according to an embodiment of the present application;
[0024] Figure 7 FIG. 10 is a schematic view when viewed in the axial direction of one magnet assembly in FIG. 9; Figure 6
[0025] Figure 8 FIG. 11 is a perspective view of a wind power generation device according to an embodiment of the present application.DETAILED DESCRIPTION
[0026] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer", and similar expressions used in the present specification are for the purpose of illustration only.
[0027] Unless otherwise defined, all technical and scientific terms used in the present specification are the same as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the associated listed items.
[0028] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.
[0030] Please refer to Figure 1 and Figure 2 In the related art, the magnet assembly 12' of the magnetic wheel is in the shape of a cylinder as a whole, and in a magnetic wheel set composed of two magnetic wheels, as shown in Figure 2 , the maximum magnetic force contact of the two magnetic wheels is a circular tangent point, and the contact is similar to point contact, and the magnetic force contact area A1 is small.
[0031] In view of this, please refer to Figures 3-6 The present application provides a magnetic wheel set 100, which comprises two magnetic wheels 10, each magnetic wheel 10 comprising a rotating shaft 11 and a magnet assembly 12, the magnet assembly 12 comprising a plurality of permanent magnets 121 arranged in sequence along the circumference of the rotating shaft 11, and the positive pole N and the negative pole S of the plurality of permanent magnets 121 are arranged alternately along the circumference of the rotating shaft 11, as shown in Figure 5 , specifically, the permanent magnet 121 comprises two opposite ends, and the two opposite ends are respectively arranged as the positive pole N and the negative pole S, and the positive pole N and the negative pole S of adjacent permanent magnets 121 are arranged reversely. The surface of the magnet assembly 12 opposite to the rotating shaft 11 is recessed to form a first annular groove 12a, and the first annular groove 12a is arranged around the axis 111 of the rotating shaft 11. Compared with the traditional magnetic wheel set as shown in Figure 1 , the two first annular grooves 12a are beneficial to increase the magnetic force contact area between the magnet assemblies 12 of the two magnetic wheels 10, thereby enhancing the magnetic force and improving the transmission capacity.
[0032] In some embodiments, the plurality of permanent magnets 121 are arranged at the same angle along the circumference of the magnet assembly 12. The inclination angle of the permanent magnet 121 can be adjusted according to the actual required transmission ratio and the need for optimization of the magnetic force line.
[0033] In some embodiments, the cross section of the first annular groove 12a is arc-shaped. The cross section of the first annular groove 12a is a plane passing through the axis 111 of the rotating shaft 11.
[0034] In some embodiments, the magnetic wheel 10 comprises a protective shell 13, the magnet assembly 12 is arranged in the protective shell 13, the protective shell 13 is sleeved on the rotating shaft 11, and the protective shell 13 is correspondingly recessed to form a second annular groove 13a with the same shape as the first annular groove 12a at the first annular groove 12a.
[0035] In some embodiments, the protective shell 13 comprises but is not limited to being formed by an injection molding process, a casting process to wrap the magnet assembly 12.
[0036] In some embodiments, the magnetic wheel set 100 comprises two magnetic wheels 10, and the axes 111 of the rotating shafts 11 of the two magnetic wheels 10 are arranged at an angle.
[0037] In some embodiments, there is a preset gap between the protective shells 13 of the two magnetic wheels 10.
[0038] In some embodiments, the axes 111 of the rotating shafts 11 of the two magnetic wheels 10 are arranged vertically.
[0039] In some embodiments, the two first annular grooves 12a are arranged in a nested manner. The two first annular grooves 12a are arranged in a facing manner, and a first annular groove 12a partially overlaps with another annular groove, which is beneficial to increase the magnetic contact area between the two magnet assemblies 12. It can be understood that, correspondingly, when the magnetic wheel 10 is provided with the protective shell 13, the two second annular grooves 13a corresponding to the two first annular grooves 12a are arranged in a nested manner.
[0040] Figure 6 Fig. 4 shows a schematic view of the relative positions between the magnet assemblies 12 of the two magnetic wheels 10 when the axes 111 of the rotating shafts 11 of the two magnetic wheels 10 are arranged vertically and the two first annular grooves 12a are arranged in a nested manner, Figure 7 Fig. 5 shows a schematic view when viewed along the axial direction of the magnet assembly 12 of one of the magnetic wheels 10. By comparison Figure 2 and Figure 7 It can be seen that Figure 7 In Fig. 4, the magnetic contact area A2 of the two magnetic wheels 10 is larger than A1, which is beneficial to make the magnetic force distribution more uniform, and thus the transmission process is more stable.
[0041] When the axes 111 of the rotating shafts 11 of the two magnetic wheels 10 are arranged vertically, the formula for calculating the suction force of the permanent magnet 121 is:
[0042]
[0043] Where F represents the suction force; B represents the magnetic induction intensity; A represents the effective adsorption area of the permanent magnet 121; μ0 represents the magnetic permeability in vacuum; μr represents the relative magnetic permeability; d represents the distance between the permanent magnet 121 and the adsorbed object.
[0044] According to the theoretical formula, compared with the traditional magnetic wheel 10, the two rotation shafts 11 of the magnetic wheel 10 are arranged vertically, and the two first annular grooves 12a are embedded. Compared with the traditional magnetic wheel 10, the effective adsorption area A is larger, and the suction force F is larger, which is beneficial to improve the transmission capacity.
[0045] Based on the same inventive concept, please refer to Figure 8 The wind power generation device 1000 provided by the application comprises the magnetic wheel set 100, the impeller and the generator 500 in any of the above embodiments. One of the magnetic wheels 10 is connected with the impeller, and the other of the magnetic wheels 10 is connected with the generator 500. For the structure and function of the magnetic wheel set 100, please refer to the above embodiments, which will not be repeated here.
[0046] In some embodiments, the wind power generation device 1000 comprises a housing 200, and the two magnetic wheels 10 are arranged in the housing 200. The rotation shaft 11 of one of the magnetic wheels 10 penetrates the housing 200, and the rotation shaft 11 of the magnetic wheel 10 is connected with the impeller outside the housing 200. The other end of the rotation shaft 11 of the other magnetic wheel 10 is connected with the motor shaft of the generator 500.
[0047] In some embodiments, the impeller comprises a first impeller 300 and a second impeller 400, and the first impeller 300 and the second impeller 400 are respectively connected with the two ends of the rotation shaft 11. The magnetic wheel 10 connected with the first impeller 300 and the second impeller 400 is called the driving magnetic wheel, and the other magnetic wheel 10 is called the driven magnetic wheel. When working, the wind drives the first impeller 300 and the second impeller 400 to rotate, and then drives the rotation shaft 11 of the driving magnetic wheel to rotate. The position of the magnetic pole of the driving magnetic wheel changes, and through the interaction of the adjacent special-shaped magnetic poles, the driven magnetic wheel is driven to rotate, and finally the motor shaft of the generator 500 is driven to rotate.
[0048] In some embodiments, the wind power generation device 1000 comprises a support 600 and a base 700. One end of the support 600 is connected with the base 700, and the other end of the support is connected with the generator 500. The base 700 is used to fix the wind power generation device 1000 to the installation position.
[0049] Based on the same inventive concept, the application further provides an energy storage device comprising an energy storage battery and the wind power generation device 1000 in any of the above embodiments. The energy storage battery is connected with the wind power generation device 1000.
[0050] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection scope of the present application.
Claims
1. A magnetic wheelset, characterized in that, The magnetic wheel comprises two magnetic wheels; The magnetic wheel comprises: a rotating shaft; a magnet assembly comprising a plurality of permanent magnets arranged along the circumference of the rotating shaft, the positive and negative poles of the plurality of permanent magnets being arranged alternately along the circumference of the rotating shaft, and the surface of the magnet assembly opposite to the rotating shaft being recessed to form a first annular groove which surrounds the axis of the rotating shaft.
2. The magnetic wheelset of claim 1, wherein, The first annular groove has an arc-shaped cross section.
3. The magnetic wheel set according to claim 1, wherein The magnetic wheel comprises a protective shell, the magnet assembly is arranged in the protective shell, the protective shell is sleeved on the rotating shaft, and the protective shell is recessed to form a second annular groove which has the same shape as the first annular groove at the first annular groove.
4. The magnetic wheel set according to any one of claims 1-3, wherein The axes of the rotating shafts of the two magnetic wheels are arranged at an angle.
5. The magnetic wheelset of claim 4, wherein, The axes of the rotating shafts of the two magnetic wheels are arranged perpendicularly.
6. The magnetic wheelset of claim 4, wherein, The two first annular grooves are arranged in a nested manner.
7. A wind power plant, characterized in that The wind power generation device comprises: The magnetic wheel set according to any one of claims 1-6; a blade wheel; a generator, one of the magnetic wheels being connected to the blade wheel and the other magnetic wheel being connected to the generator.
8. The wind power generation device according to claim 7, wherein The wind power generation device comprises a housing, the two magnetic wheels are arranged in the housing, the rotating shaft of one of the magnetic wheels penetrates the housing, the rotating shaft of the magnetic wheel is connected to the blade wheel outside the housing, and one end of the rotating shaft of the other magnetic wheel is connected to the motor shaft of the generator.
9. The wind power generation device according to claim 8, wherein The blade wheel comprises a first blade wheel and a second blade wheel, and the first blade wheel and the second blade wheel are respectively connected to the two ends of the rotating shaft.
10. An energy storage device, characterized by, The wind power generation device according to claim 7 and an energy storage battery are connected.