Alternating current power generation wheel

Abstract

The utility model relates to an alternating current power generation wheel in the field of power generation wheels, which comprises a hub steel ring, a tire and an alternating current power generation assembly arranged in the hub steel ring, the alternating current power generation assembly comprises a stator group and a rotor group, a rotor coil is electrically connected with a three-phase line, and a rotor iron core is fixed on the inner wall of the hub steel ring. The stator group comprises a main shaft, a permanent magnet and a stator core, three conductive bearings insulated from the main shaft are fixedly mounted on the main shaft, outer rings of the three conductive bearings are electrically connected with three phase lines respectively, and inner rings of the three conductive bearings are electrically connected with three output lines respectively. In the process that the rotor set and the stator set rotate relatively, under connection of the conductive bearings, the three-phase line and the three output lines can be kept conductive in the process of relative rotation, meanwhile, the three output lines are led out of the main shaft along the wire grooves, the three-phase line leads out current along the main shaft through the conductive bearings, power can be continuously generated in the running process of the wheel, and the power generation efficiency is improved. And the current is effectively led out along the main shaft.

Description

Technical Field

[0001] The utility model relates to the field of power generation wheels, in particular to an AC power generation wheel which can effectively lead current along the wheel. Background Art

[0002] Regarding electric vehicles, market share: With the rapid development of the new energy vehicle market, the proportion of electric vehicles in my country's automobile market has increased year by year. According to data, my country's new energy vehicle sales in 2023 will exceed 7.7 million, accounting for 36% of the overall passenger car sales, among which pure electric vehicles occupy a dominant position. It is expected that in 2024, the sales of electric vehicles will continue to maintain a high growth rate and the market share will further expand. Sales: The sales of electric vehicles are affected by multiple factors such as policy promotion, technological progress and increased consumer acceptance. With the breakthrough of battery technology, the improvement of charging facilities and the improvement of consumer awareness, the sales of electric vehicles are expected to double in the next few years. Market prospects for application: Electric vehicles have broad application prospects in public transportation, online car-hailing, logistics and distribution and other fields. In addition, as private consumers' understanding of environmental protection and energy conservation deepens, the proportion of electric vehicles in the personal consumer market will gradually increase.

[0003] Regarding electric tricycles, electric tricycles are widely used in short-distance transportation, express delivery and other fields in my country, and have a high market share. With the acceleration of urbanization and the development of the logistics industry, the market demand for electric tricycles will continue to grow. Sales: The sales of electric tricycles are greatly affected by policies. In some cities, the government has introduced policies to restrict the passage of electric tricycles, which has had a certain impact on sales. But overall, the sales of electric tricycles have maintained steady growth. Market prospects for application: Electric tricycles have broad application prospects in short-distance transportation, express delivery, sanitation and cleaning and other fields. With the acceleration of urbanization and the development of the logistics industry, the application areas of electric tricycles will be further expanded.

[0004] Regarding electric two-wheeled motorcycles, market share: Electric two-wheeled motorcycles occupy an important position in urban travel in my country, especially in short-distance travel and commuting. As consumers' demand for diversified and personalized travel methods increases, the market share of electric two-wheeled motorcycles is expected to increase further. Sales: The sales volume of electric two-wheeled motorcycles is affected by many factors such as policies, economy, and society. Against the background of policy support, consumption upgrades, and increased environmental awareness, the sales volume of electric two-wheeled motorcycles is expected to achieve steady growth. Market prospects for applications: Electric two-wheeled motorcycles have broad application prospects in urban travel, leisure and entertainment, and other fields. With the development of the sharing economy and the application of intelligent technology, the application scenarios of electric two-wheeled motorcycles will be further enriched.

[0005] Advantages of electric vehicles: 1) Environmental protection and energy saving. Electric vehicles are driven by clean energy, which reduces exhaust emissions and air pollution, helps improve urban environmental quality and mitigate global climate change. 2) Energy saving and high efficiency. Electric vehicles use efficient energy conversion technology, which can more effectively utilize energy resources and have higher energy utilization rate than traditional fuel vehicles. 3) Smooth and quiet. The driving experience of electric vehicles is smoother and quieter, which improves the comfort of riding. 4) Policy support. The Chinese government has given strong support to the electric vehicle industry, and is actively promoting the development of the electric vehicle industry from policy support to capital investment to infrastructure construction.

[0006] The defects of electric vehicles, electric tricycles, and electric two-wheeled motorcycles at present: 1) Limited cruising range. The cruising range of electric vehicles is still an important factor restricting their development. Although battery technology continues to improve, it still needs to be improved to meet the needs of long-distance travel. 2) Insufficient charging facilities. There are relatively few charging facilities for electric vehicles and their uneven distribution makes charging inconvenient, especially in remote areas and during peak hours. 3) High cost. The manufacturing cost of electric vehicles is relatively high, resulting in a high selling price, which is a considerable burden for some consumers. 4) Safety issues. Electric vehicles may have safety hazards when driving at high speeds and in bad weather conditions. It is necessary to strengthen technical research and development and quality control to improve their safety.

[0007] In summary, my country's electric vehicles, electric tricycles, and electric two-wheeled motorcycles have shown a positive development trend in terms of market share, sales volume, and application prospects. At the same time, electric vehicles have the advantages of environmental protection and energy saving, energy saving and high efficiency, stability and quietness, and policy support, but they also have defects such as limited driving range, insufficient charging facilities, high costs, and safety issues. In the future, with the continuous advancement of technology and the continuous support of policies, the electric vehicle industry is expected to achieve a healthier and more sustainable development.

[0008] There are currently two ways to solve the technical problem of limited driving range. One is to continuously invest in the research and development of solid-state batteries with higher energy density and better safety. Solid-state batteries use glass compounds made of metals such as lithium and sodium as conductive materials, replacing the liquid electrolyte of traditional lithium batteries, thereby greatly improving the energy density of the battery. However, despite the many advantages of solid-state battery technology, its popularization still faces some challenges. First, the cost of solid-state batteries is relatively high, mainly due to low raw material output, low maturity of related raw material production, equipment, and manufacturing processes. In order to reduce costs, the general solution in the industry is to let semi-solid-state batteries go first and reduce material costs through large-scale production. In addition, it is difficult to balance the high ionic conductivity and good processing performance of solid-state batteries, which is also a factor restricting its popularization. According to industry forecasts and plans, the popularization of solid-state batteries may take some time. Some institutions predict that around 2025, semi-solid-state batteries may gradually be commercialized and gradually form a certain scale in the overall market of power batteries. The popularization of all-solid-state batteries may take longer, and may not be achieved until around 2030. Another is to use electric vehicle kinetic energy recovery technology. When electric vehicles slow down or brake, they convert part of the kinetic energy into electrical energy and store it for reuse in subsequent driving. This technology has obvious advantages in improving the range of electric vehicles, reducing energy consumption and reducing brake wear. Kinetic energy recovery technology has been widely used in some advanced electric models. These models can achieve efficient recovery and utilization of kinetic energy by adopting advanced control systems and algorithms. With the continuous maturity and optimization of technology, more electric models will adopt this technology in the future. Although kinetic energy recovery technology brings many advantages, such as improving energy utilization and extending the range, it also has some disadvantages that cannot be ignored: 1) Ride experience problems. When the kinetic energy recovery effect is strong, the speed of electric vehicles will slow down faster, which may make passengers in the car feel uncomfortable, especially those who are prone to motion sickness. This sudden deceleration may make them feel motion sick. 2) Brake light problem. The brake lights of some models will not light up in kinetic energy recovery mode. When the vehicle is in a deceleration state, if the driver of the rear vehicle does not notice that the front vehicle is decelerating, it may increase the risk of rear-end collision. 3) Driving habits: Drivers who are used to using kinetic energy recovery mode for braking for a long time may develop the habit of keeping their feet on the accelerator pedal. In an emergency, they may need extra time to transfer their feet to the brake pedal, increasing the risk of an accident. 4) Technical cost issues: Kinetic energy recovery systems, especially efficient systems, may increase the manufacturing cost of vehicles, which may increase the price of electric vehicles and affect their market competitiveness.5) Maintenance and servicing issues: The kinetic energy recovery system may increase the complexity and maintenance difficulty of the vehicle. If the system fails, it may require professional technicians to repair it, which may increase the owner's maintenance costs and time.

[0009] In response to the problem of limited cruising range, a large number of patent applications have appeared for implementing power generation through the kinetic energy of the wheel's rotation process, and have been published on the China Patent Publication Bulletin Network, but this type of technology has not been popularized in the market. Although the wheel kinetic energy power generation technology can theoretically improve the cruising range of electric vehicles, the current patent technology that has been published is effectively combined with practical applications. It is found that there are still the following problems: According to the basic principle of AC generators, in most generator designs, the coil is the rotating part, and the magnet (or magnet) is fixed to the generator frame as a stator. However, in the wheel power generation technology, the coil rotates synchronously with the wheel. If it is directly led out by wiring, there will be a problem of winding. The specific related structure of how to lead out the current of the rotating coil and send it to the control system or battery system is not described in detail. In other words, the prior art generally has the technical problem of how to lead out the current of the rotating coil when applying the generator technology to wheel power generation. The patent solutions of the prior art have not described this technical problem in detail. In addition, the prior art does not distinguish between AC power generation structure and DC power generation structure. The theoretical design is not reasonable. It is unclear whether the specific application is AC power generation technology or DC power generation technology, which makes it difficult for technical personnel in this field to implement the patented technical solution during the application process. Therefore, there is a technical problem that the wheel power generation technology is difficult to implement. Utility Model Content

[0010] The purpose of the utility model is to solve the above defects and provide an AC generator wheel, which can generate electricity during the rotation of the wheel and can effectively lead the current along the wheel, so that the battery can be continuously charged during driving, solving the technical problem in the prior art that the current of the rotor cannot be led out due to the continuous rotation of the rotor.

[0011] The purpose of the utility model is achieved by the following methods:

[0012] An AC power generation wheel comprises a hub steel rim, a tire and an AC power generation assembly arranged inside the hub steel rim, wherein the AC power generation assembly comprises a stator group and a rotor group, wherein the rotor group comprises a rotor core and a rotor coil wound around the rotor core, wherein the rotor coil is electrically connected to a three-phase line, and the rotor core is fixed to the inner wall of the hub steel rim, wherein the stator group comprises a main shaft, a permanent magnet and a stator core, wherein the permanent magnet is evenly fixed to the edge of the stator core, the main shaft penetrates and is fixed to the center of the stator core, the rotor core is located at the periphery of the stator core and does not contact each other, and the two ends of the main shaft extend outward along the center of the hub steel rim The main shaft is provided with a first conductive bearing and a second conductive bearing, and are rotatably connected with the hub steel ring through the first bearing and the second bearing respectively. The rotor core, the stator core and the hub steel ring are concentrically arranged along the main shaft. Three conductive bearings insulated from the main shaft are fixedly mounted on the main shaft. The three conductive bearings are insulated from each other. The outer rings of the three conductive bearings are electrically connected to the three-phase lines respectively. The inner rings of the three conductive bearings are electrically connected to three output lines respectively. A wire groove corresponding to the positions of the three conductive bearings and extending outward along one end of the main shaft is provided on the main shaft. The three output lines are arranged in the wire groove and led out along one end of the main shaft.

[0013] Furthermore, the left and right ends of the wheel hub steel ring are respectively fixedly mounted with a first cover plate and a second cover plate, and the first bearing and the second bearing are respectively fixedly mounted at the center of the first cover plate and the second cover plate. The first cover plate and the second cover plate play a sealing role, and are used to prevent accumulated water, dust, mud, etc. from entering the interior of the wheel hub steel ring to affect the normal operation of the stator group and the rotor group. At the same time, the first cover plate and the second cover plate are also used to assist in the installation of the first bearing and the second bearing.

[0014] Furthermore, the first cover plate and the second cover plate are both locked and fixed with the wheel hub steel ring by screws. At the same time, other fixing methods should be designed, and the first cover plate and the second cover plate are designed to be detachable structures to facilitate the inspection and maintenance of the AC power generation assembly.

[0015] Furthermore, the centers of the first cover plate and the second cover plate are both provided with oil seals for covering the first bearing and the second bearing, and the first cover plate and the second cover plate respectively seal the interior of the hub steel ring along the left and right ends of the hub steel ring for waterproofing. The first cover plate and the second cover plate are sealed at the left and right ends of the hub steel ring, playing a good waterproof role, and the interior of the hub steel ring reaches the waterproof level, preventing the stator group and the rotor group inside the hub steel ring from being damaged by water, ensuring that it is actually applicable to various harsh environments and is not affected by water, dust, and other factors.

[0016] Furthermore, an insulating spacer is provided between two adjacent conductive bearings. The insulating spacer can be used for insulation to ensure that the two adjacent conductive bearings are in an insulating state, and can also ensure that the conductive bearings and the main shaft are also in an insulating state.

[0017] Furthermore, an insulating rubber layer is provided at the connection area between the main shaft and the three conductive bearings. The insulating rubber layer can be realized by spraying insulating paint, or directly wrapping insulating tape at the corresponding position of the main shaft. Ensure that the conductive bearings and the main shaft are insulated to prevent the main shaft from being electrified.

[0018] Furthermore, a raised limiting ring for installing the stator core is provided in the middle of the main shaft, the stator core is key-connected to the main shaft, and a locking nut for locking the stator core is provided on the main shaft, and the locking nut and the raised limiting ring respectively limit the left and right ends of the stator core. The locking nut is provided to press the stator core, which is convenient for installing and removing the stator core. The stator core is pressed from both ends by the locking nut and the raised limiting ring to ensure the stability of the installation.

[0019] The beneficial effects produced by the utility model are as follows: three conductive bearings insulated from the main shaft are installed on the main shaft, the outer rings of the three conductive bearings are electrically connected to the three-phase lines respectively, and the inner rings of the three conductive bearings are electrically connected to the three output lines respectively. During the relative rotation of the rotor group and the stator group, under the connection of the conductive bearings, the three-phase lines and the three output lines can still maintain conductivity during the relative rotation, thereby avoiding the problem of the wires being entangled during the rotation of the rotor group. At the same time, the three output lines are led out of the main shaft along the wire grooves, and during the rotation of the wheel, the rotor coil is driven to cut the magnetic induction line of the permanent magnet, thereby generating current to realize the power generation principle. The three-phase line leads the current along the main shaft through the conductive bearings, and can continuously generate electricity during the driving of the wheel, and effectively lead the current along the main shaft, so that the battery can be continuously charged during the driving process to improve the overall cruising range of the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the AC generator wheel of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the AC generator wheel of the utility model;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the stator group, rotor group and hub steel ring in the AC generator wheel of the utility model;

[0023] Figure 4 It is a schematic diagram of the structural decomposition of the stator group, the rotor group and the hub steel ring in the AC generator wheel of the utility model;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the stator group and the rotor group in the AC generator wheel of the utility model;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the main shaft in the AC generator wheel of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure decomposition of the main shaft in the AC generator wheel of the utility model;

[0027] Figure 8 This is a front view of the rotor assembly in the AC generator wheel of the utility model;

[0028] In the figure, 1-tire, 2-wheel hub steel rim, 3-rotor core, 4-stator core, 5-permanent magnet, 6-main shaft, 7-raised limit ring, 8-locking nut, 9-metal gasket, 10-first cover plate, 11-second cover plate, 12-first bearing, 13-second bearing, 14-oil seal, 15-conductive bearing, 16-insulating isolation gasket, 17-wire trough, 18-output line, 19-three-phase line. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] In this embodiment, refer to Figure 1-Figure 8 The AC power generation wheel specifically implemented includes a wheel hub steel ring 2, a tire 1 and an AC power generation component arranged inside the wheel hub steel ring 2. The tire 1 is sealed and installed on the periphery of the wheel hub steel ring 2. The AC power generation component includes a stator group and a rotor group. The rotor group and the wheel hub steel ring 2 realize synchronous rotation. The rotor group is composed of a rotor core 3 and a rotor coil wound around the rotor core 3. The rotor coil is electrically connected to a three-phase line 19, such as Figure 8 As shown, the three-phase lines 19 correspond to Figure 8 The three windings of U, V, and W in the Figure 3 As shown, the rotor core 3 is fixed to the inner wall of the hub steel ring 2, and can be fixed specifically by a tight fit, where the outer ring of the rotor core 3 is fixed to the inner wall of the hub steel ring 2 by a tight fit, and other fixing methods such as welding can also be used.

[0031] like Figure 4 and Figure 5 As shown, the stator assembly includes a main shaft 6, a permanent magnet 5 and a stator core 4. The permanent magnet 5 is evenly fixed to the edge of the stator core 4. The periphery of the stator core 4 is provided with a positioning groove for matching and accommodating the permanent magnet 5. The main shaft 6 penetrates and is fixed to the center of the stator core 4. The rotor core 3 is located at the periphery of the stator core 4 and does not contact each other. Specifically, as shown in FIG. Figure 6 and Figure 7As shown, a raised limiting ring 7 for installing the stator core 4 is provided in the middle of the main shaft 6, the stator core 4 is key-connected with the main shaft 6, and a locking nut 8 for locking the stator core 4 is provided on the main shaft 6, and the locking nut 8 and the raised limiting ring 7 respectively limit the left and right ends of the stator core 4. The locking nut 8 is provided to press the stator core 4, and a metal gasket 9 is additionally provided to press the stator core 4, which is convenient for installing and removing the stator core 4. The stator core 4 is pressed from both ends by the locking nut 8 and the raised limiting ring 7 to ensure the stability of the installation.

[0032] The two ends of the main shaft 6 extend outward along the center of the hub steel ring 2, and are rotatably connected to the hub steel ring 2 through the first bearing 12 and the second bearing 13, respectively. The rotor core 3, the stator core 4 and the hub steel ring 2 are all concentrically arranged along the main shaft 6. Specifically, the left and right ends of the hub steel ring 2 are respectively fixed with the first cover plate 10 and the second cover plate 11, and the first cover plate 10 and the second cover plate 11 are both locked and fixed to the hub steel ring 2 by screws. The first cover plate 10 and the second cover plate 11 are designed to be a detachable structure by screw fixing, which is convenient for inspection and maintenance of the AC power generation components. The first bearing 12 and the second bearing 13 are fixedly mounted at the center of the first cover plate 10 and the second cover plate 11, respectively. The first cover plate 10 and the second cover plate 11 are also used to assist in the installation of the first bearing 12 and the second bearing 13. The center of the first cover plate 10 and the second cover plate 11 are both provided with oil seals 14 for covering the first bearing 12 and the second bearing 13. The first cover plate 10 and the second cover plate 11 respectively seal the inside of the hub steel ring 2 along the left and right ends of the hub steel ring 2. The first cover plate 10 and the second cover plate 11 are sealed at the left and right ends of the hub steel ring 2, playing a good waterproof role. The inside of the hub steel ring 2 reaches the waterproof grade, preventing the stator group and the rotor group inside the hub steel ring 2 from being damaged by water, ensuring that it is actually applicable to various harsh environments and is not affected by water, dust, mud and other aspects.

[0033] like Figure 6 and Figure 7 As shown, three conductive bearings 15 insulated from the main shaft 6 are fixedly mounted on the main shaft 6, and the three conductive bearings 15 are insulated from each other. An insulating isolation gasket 16 is arranged between two adjacent conductive bearings 15, and an insulating isolation gasket 16 is also arranged between the conductive bearing 15 close to the raised limiting ring 7 and the raised limiting ring 7. The insulating isolation gasket 16 can be used for insulation to ensure that the two adjacent conductive bearings 15 are in an insulated state, and at the same time, it can also ensure that the conductive bearing 15 and the main shaft 6 are also in an insulated state. An insulating rubber layer that plays an insulating role is arranged in the connection area between the main shaft 6 and the three conductive bearings 15. The insulating rubber layer of this embodiment is composed of an insulating tape, and the insulating tape is wrapped around the periphery of the area of ​​the main shaft 6 corresponding to the installation of the conductive bearing 15, to ensure that the conductive bearing 15 and the main shaft 6 are in an insulated state, and to prevent the main shaft 6 from being charged.

[0034] like Figure 5 , Figure 6 and Figure 7 As shown, the outer rings of the three conductive bearings 15 are electrically connected to the three-phase lines 19 respectively, and the inner rings of the three conductive bearings 15 are electrically connected to the three output lines 18 respectively. A wire groove 17 corresponding to the positions of the three conductive bearings 15 and extending outward along one end of the main shaft 6 is provided on the main shaft 6. The three output lines 18 are arranged in the wire groove 17 and led out along one end of the main shaft 6.

[0035] The AC power generation wheel of this embodiment is equipped with three conductive bearings 15 insulated from the main shaft 6. During the relative rotation of the rotor group and the stator group, the three-phase line 19 and the three output lines 18 can remain conductive under the connection of the conductive bearings 15, thereby avoiding the problem of the wires being entangled during the rotation of the rotor group. During the rotation of the wheel, the rotor coil is driven to cut the magnetic induction line of the permanent magnet 5, thereby generating current to realize the power generation principle. The three-phase line 19 leads the current along the main shaft 6 through the conductive bearings 15, and can continuously generate electricity during the driving of the wheel, and effectively lead the current along the main shaft 6. The three output lines 18 can be specifically connected to a control system or a battery system. Since the AC power generation wheel of this embodiment emits AC power, the AC power needs to be processed before being connected to the control system or the battery system. Specifically, it can be connected to a rectifier bridge stack circuit and a DC conversion circuit in sequence. The AC power generated by the AC power generation wheel is led out along the three output lines 18, converted into DC power by the rectifier bridge stack circuit, and then the DC voltage is converted to a constant DC voltage that meets the charging of the battery pack through the DC conversion circuit. Connecting to the rectifier bridge stack circuit and the DC conversion circuit is a conventional technical means for regulating and converting AC power. The issue of energy conversion efficiency of specific power generation is also a conventional technical means. Technical personnel in this field can adjust the conversion efficiency by setting the specific sizes of the stator group and the rotor group. The purpose of connecting to the rectifier bridge stack circuit and the DC conversion circuit in sequence is to ensure the output of constant DC power, so that the battery pack can be charged.

[0036] When the AC generator wheel of this embodiment is actually used, it can be installed on an electric bicycle, an electric tricycle, an electric four-wheel vehicle, and an electric truck. The AC generator wheel is installed at the bottom of the vehicle and can be used as an auxiliary wheel of the electric vehicle. It does not affect other performances of the vehicle, nor does it affect the normal operation of other wheels. Since it is an auxiliary wheel, there is no need to consider too much about the overall supporting performance of the AC generator wheel. The AC generator wheel and other wheels can be arranged side by side on the same horizontal plane and can share the main shaft 6 of the same wheel. Since the electric tricycle or electric bicycle itself bears a lighter weight, the AC generator wheel of this embodiment can also be directly used to replace the original vehicle wheel. The problem of braking can be solved by improving the structure of the wheel hub steel rim 2, so that the AC generator wheel of this embodiment has the functions of an ordinary electric tricycle or electric bicycle wheel. For electric four-wheeled vehicles, the structure of the wheel hub steel rim can also be improved to make it have the functions of an ordinary car wheel. During the driving process of the electric vehicle, the AC generator wheel will be driven. During the rotation of the AC generator wheel, the rotor coil will be driven to cut the magnetic induction line of the permanent magnet 5, thereby generating current to realize the power generation principle. As long as the electric vehicle is driving, the AC generator wheel will rotate accordingly, so that the battery can be continuously charged during the driving process to increase the overall cruising range of the electric vehicle.

[0037] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as the protection scope of the present invention.

Claims

1. An AC power generation wheel, comprising a hub steel rim, a tire and an AC power generation assembly arranged inside the hub steel rim, wherein the AC power generation assembly comprises a stator assembly and a rotor assembly, and is characterized in that: The rotor assembly is composed of a rotor core and a rotor coil wound on the rotor core, the rotor coil is electrically connected to a three-phase line, the rotor core is fixed to the inner wall of the hub steel ring, the stator assembly includes a main shaft, a permanent magnet and a stator core, the permanent magnet is evenly fixed to the edge of the stator core, the main shaft penetrates and is fixed to the center of the stator core, the rotor core is located at the periphery of the stator core and does not contact each other, the two ends of the main shaft extend outward along the center of the hub steel ring respectively, and rotate with the hub steel ring through the first bearing and the second bearing respectively The rotor core, the stator core and the hub steel ring are all concentrically arranged along the main shaft. Three conductive bearings insulated from the main shaft are fixedly installed on the main shaft. The three conductive bearings are insulated from each other. The outer rings of the three conductive bearings are electrically connected to the three-phase lines respectively. The inner rings of the three conductive bearings are electrically connected to three output lines respectively. A wire groove corresponding to the positions of the three conductive bearings and extending outward from one end of the main shaft is provided on the main shaft. The three output lines are arranged in the wire groove and led out along one end of the main shaft.

2. The AC generator wheel according to claim 1, characterized in that: The left and right ends of the wheel hub steel ring are respectively fixedly mounted with a first cover plate and a second cover plate, and the first bearing and the second bearing are respectively fixedly mounted at the center of the first cover plate and the second cover plate.

3. The AC generator wheel according to claim 2, characterized in that: The first cover plate and the second cover plate are both locked and fixed to the wheel hub steel ring by screws.

4. The AC generator wheel according to claim 2, characterized in that: The centers of the first cover plate and the second cover plate are both provided with oil seals for covering the first bearing and the second bearing. The first cover plate and the second cover plate respectively perform waterproof sealing on the interior of the wheel hub steel ring along the left and right ends of the wheel hub steel ring.

5. The AC generator wheel according to claim 1, characterized in that: An insulating spacer is arranged between two adjacent conductive bearings.

6. The AC generator wheel according to claim 1, characterized in that: An insulating rubber layer having an insulating effect is arranged in the connection area between the main shaft and the three conductive bearings.

7. The AC generator wheel according to any one of claims 1 to 6, characterized in that: A raised limiting ring for installing the stator core is provided in the middle of the main shaft. The stator core is key-connected to the main shaft, and a locking nut for locking the stator core is provided on the main shaft. The locking nut and the raised limiting ring respectively limit the left and right ends of the stator core.

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