Vehicle power generation system

Abstract

The present invention relates to a vehicle power generation system. The system comprises a wheel power generation device provided in a vehicle body structure. The wheel power generation device comprises a rim structure and a disk structure. The rim structure comprises an annular hollow rim and a plurality of wheel ribs. A tire is fixed to the outer peripheral surface of the rim, an inner rim space is formed inside the rim, and a first magnet set is provided on the inner wall surface of the rim. The disk structure is located in the inner rim space and comprises a stationary axle, an annular rim, a plurality of coils arranged on a disk, and a second magnet set. When the tire rotates with the rim structure, the first magnet set moves relative to the stationary coils and the second magnet set, so that the coils generate an induced current. The induced current can be used by an external load or stored by means of an electrical energy storage device, and can supply power to an internal system of a vehicle, and even be used as a power source for driving the vehicle, so as to realize the conversion from rotational kinetic energy of a wheel to electrical energy.

Description

Vehicle power generation system Technical Field

[0001] This invention relates to the technical field of a vehicle power generation system, and more particularly to a vehicle power generation system that improves power generation and power utilization efficiency. Background Technology

[0002] Most current tire-based power generation technologies on the market rely on the kinetic energy generated during vehicle operation to recover energy and supplement the vehicle's electrical needs. However, existing technologies still have many shortcomings in terms of structural design, power generation efficiency, and reliability.

[0003] Traditional vehicle power generation systems typically rely on generator structures attached to the axles or wheel rims. These devices use the rotation of the wheels to drive the generator's rotor, creating relative motion between the stator and rotor to generate induced current. However, due to the large size of the generator, this additional structure significantly increases vehicle weight and affects fuel efficiency. Furthermore, the operation of the power generation unit requires additional mechanical connections, leading to structural complexity, installation difficulties, and increased maintenance costs.

[0004] Other technologies employ embedded power generation solutions, such as embedding power generation modules inside the wheels to generate electricity using tire deformation or the piezoelectric effect. While these technologies offer improvements in weight and structure, their power generation efficiency is generally low, and the devices are susceptible to road conditions and vehicle speed, making it difficult to provide a stable and sufficient supply of power. Furthermore, the durability of embedded power generation modules in harsh environments remains a significant challenge.

[0005] Furthermore, existing vehicle tire power generation technology has not yet reached an ideal level in terms of waterproofing and sealing design. When vehicles are driven in wet environments such as rain and snow, water can easily enter the device, causing electrical components to fail or even short-circuit, which seriously affects the overall lifespan and reliability of the device.

[0006] Based on the aforementioned problems, prior art could not simultaneously maintain the high energy conversion efficiency and lightweight structure of wheel-mounted power generation devices while ensuring the stability, durability, and reliability of the devices. Therefore, how to design a new type of vehicle power generation system that simplifies the structure, improves power generation efficiency, and enhances sealing and environmental adaptability is a pressing technical problem to be solved in this field. Summary of the Invention

[0007] Therefore, the present invention provides a power generation system for a vehicle, which mainly includes:

[0008] A wheel rim structure includes a hollow annular rim and a plurality of wheel ribs. The outer circumferential surface of the rim is used to fix a tire. The rim has an inner frame space inside. The wheel ribs are located on one side of the inner frame space and have a central hole corresponding to the axle position of the rim. Each wheel rib extends radially outward from the periphery of the central hole and connects to one side of an inner wall surface of the rim to support the rim. A first magnet group is arranged on the inner wall surface.

[0009] A disc structure is set in the inner frame space, and a wheel axle is provided at the center of the disc structure for passing through the central hole and being fixed to a vehicle body structure to remain stationary. A ring edge corresponds to the inner wall surface and maintains a preset distance. A second magnet group is set in the ring edge. The plurality of coils are arranged in a ring on the disc structure.

[0010] Accordingly, when the vehicle tire rotates with the wheel rim structure, the first magnet group moves relative to the coil in the stationary disk structure and the second magnet group. The change in the magnetic field of the first magnet group and the second magnet group induces an induced current in the coil. The induced current can be used by an external load, or stored through an energy storage device 60, and can be used for the power supply of the vehicle's internal system, or even as a power source to drive the vehicle, so as to convert the rotational kinetic energy of the vehicle tire 50 into the electrical energy required for the vehicle to perform.

[0011] The vehicle body structure described herein is applicable to various vehicles, including but not limited to automobiles, electric vehicles, bicycles, motorcycles, or other wheeled vehicles.

[0012] The winding method of the coil includes: winding 8 coils once to form a first group of wires, winding 10 coils once to form a second group of wires, and pulling out the first group of wires and the second group of wires respectively and connecting them to the energy storage device.

[0013] In the second group of wires, the winding design of each group of 10 coils includes repeated winding of the 1st and 9th coils to increase the stability of the induced voltage and the output power.

[0014] The disc structure includes an annular wall, and a first annular sealing ring and a second annular sealing ring are respectively disposed on both sides of the disc structure and fixed to the annular wall and the annular edge to form a waterproof structure.

[0015] The induced current, after being rectified, can be used directly by an external load or stored as energy through an energy storage device.

[0016] The energy storage device has an input current range of 200 amperes to 2000 amperes, which is suitable for high-power energy storage needs.

[0017] It includes at least one capacitor with a capacity of 1 to 5 farads, and the capacitor is connected to the coil and the energy storage device respectively through wires.

[0018] The preset distance is 1 mm to 5 mm, which is used to improve the magnetic field coupling effect between the first magnet group and the second magnet group.

[0019] The induced current generated by the wheel power generation device is connected to a bridge rectifier, and an inverter rectifier and a unidirectional rectifier are respectively connected to its two end electrodes. The inverter rectifier and the unidirectional rectifier are then electrically connected to a transformer rectifier and a supercapacitor. Finally, the transformer is connected to a main power control server to provide power to other components in the vehicle body structure. Attached Figure Description

[0020] Figure 1 is a schematic diagram of a vehicle power generation system proposed in this invention;

[0021] Figure 2 is an exploded view of the wheel power generation device proposed in this invention;

[0022] Figure 3 is a schematic diagram of the wheel frame structure of the wheel power generation device proposed in this invention;

[0023] Figure 4 is a schematic diagram of another vehicle power generation system proposed in this invention;

[0024] Figure 5 is a schematic diagram of the coil arrangement of the disc structure in the wheel power generation device proposed in this invention.

[0025] Figure 6 is a schematic diagram of the waterproof structure of the disc structure in the wheel power generation device proposed in this invention;

[0026] Figure 7 shows a circuit application example of the wheel power generation device proposed in this invention after generating induced current. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the following detailed description is provided in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the component or object preceding the word covers the component or object listed after the word and its equivalents, without excluding other components or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Please refer to Figures 1 to 3. Figure 1 is a schematic diagram of a vehicle power generation system 1 proposed by the present invention; Figure 2 is an exploded schematic diagram of the wheel power generation device 100 proposed by the present invention; Figure 3 is a schematic diagram of the wheel frame structure 10 of the wheel power generation device 100 proposed by the present invention. The power generation system 1 of this vehicle mainly includes a wheel power generation device 100 disposed in a vehicle body structure 200. The wheel power generation device (100) includes a wheel frame structure 10 and a disc structure 20. The wheel frame structure 10 includes an annular hollow wheel frame 11 and a plurality of wheel ribs 12. The outer peripheral surface of the wheel frame 11 is used to fix a tire 50. The wheel frame 11 has an inner frame space 111 inside. The wheel ribs 12 are located on one side of the inner frame space 111 and have a central hole 112 corresponding to the axial position of the wheel frame 11. Each wheel rib 12 extends radially outward from the periphery of the central hole 112 and connects to one side of an inner wall surface 113 of the wheel frame 11 to support a first magnet group 13 arranged on the inner wall surface 113.

[0030] The wheel rim structure 10 adopts a hollow ring design, which not only fixes the vehicle tire 50, but also provides sufficient space in the inner frame space 111 to accommodate the disc structure 20 and related components. The radial design of the wheel ribs 12 evenly distributes stress, ensuring that the wheel rim structure 10 remains stable during vehicle operation.

[0031] The disc structure 20 is disposed in the inner frame space 111. A wheel axle 21 is located at the center of the disc structure 20 for passing through the central hole 112 and being fixed to a vehicle body structure 1 to remain stationary. An annular edge 22 corresponds to the inner wall surface 113 and maintains a preset distance d. A second magnet group 23 is disposed on the annular edge 22. The plurality of coils 24 are arranged in a ring on the disc structure 20.

[0032] Accordingly, when the tire 50 rotates with the wheel rim structure 10, the first magnet group 13 moves relative to the coil 24 in the stationary disk structure 20 and the second magnet group 23. The change in the magnetic field of the first magnet group 13 and the second magnet group 23 induces an induced current in the coil 24. The induced current can be used by an external load, or stored through an energy storage device 60, and can be used for the power supply of the vehicle's internal system, or even as a power source to drive the vehicle, so as to convert the rotational kinetic energy of the tire 50 into the electrical energy required for the vehicle to perform.

[0033] The vehicle structure described herein is applicable to various vehicles, including but not limited to automobiles, electric vehicles, bicycles, motorcycles, or other wheeled vehicles. Please refer to Figure 4, which illustrates another application scenario of the vehicle power generation system proposed in this invention, applied to an electric motorcycle. In the vehicle power generation system 1 proposed in this invention, the first magnet group 13 is arranged on the inner wall surface 113. Through relative movement with the second magnet group 23, a changing magnetic field is generated, inducing an induced current within the stationary coil 24, thereby achieving the conversion of mechanical energy into electrical energy. This device achieves efficient power generation through a simplified structural design, avoiding the energy loss of additional mechanical mechanisms in traditional power generation devices, and is suitable for power generation needs in vehicle-moving environments.

[0034] Please refer to Figure 5, which is a schematic diagram of the coil 24 arrangement of the disc structure 20 in the wheel power generation device 100 proposed in this invention; wherein, the winding method of the coil 24 includes: winding once every 8 coils to form a first group of wires S1, winding once every 10 coils to form a second group of wires S2, and the first group of wires S1 and the second group of wires S2 are respectively pulled out and connected to the energy storage device 60 or used to provide an external load.

[0035] The grouping and winding of the first group of wires S1 and the second group of wires S2 helps to balance the output of the induced voltage. The differentiated design of every 8 coils and every 10 coils optimizes the distribution of high-frequency and low-frequency currents to adapt to different power needs. The first group of wires S1 provides high-frequency output for real-time power supply, suitable for dynamic loads; the second group of wires S2 generates a more stable low-frequency current, suitable for charging or long-term stable power supply. Through the coordinated operation of multiple groups of coils, the flexibility and diversity of energy output are achieved, which is superior to power generation devices with a single output mode.

[0036] Furthermore, it should be noted that the winding design of every 10 coils in the second group of lines S2 includes the repeated winding of the 1st and 9th coils to increase the stability of the induced voltage and the output power. As shown in Figure 4, the first coil wound in the second group of lines S2' is marked C1, and the ninth coil is marked C9. The coil marked C9 is the first coil wound in the next second group of lines S2".

[0037] The first and ninth coils are repeatedly wound in the second set of wires S2 to enhance the induced magnetic flux of this coil segment, thereby increasing the output power. This also increases the stability of the induced voltage and reduces voltage fluctuations caused by uneven magnetic field changes. Compared to traditional uniformly wound coil designs, this design improves output efficiency and effectively solves the problem of high-frequency voltage fluctuations.

[0038] Please refer to Figure 6, which is a schematic diagram of the waterproof structure of the disc structure in the wheel power generation device 100 proposed in this invention. The disc structure 20 includes an annular wall 25, a first annular sealing ring 31 and a second annular sealing ring 32 respectively disposed on both sides of the disc structure 20, and fixed to the annular wall 25 and the annular edge 22 to form a waterproof structure. The first annular sealing ring 31 and the second annular sealing ring 32 are respectively disposed on both sides of the disc structure 20 and are tightly fitted with the annular wall 25 and the annular edge 22 to prevent moisture from penetrating into the arrangement area of ​​the coil 24. Through the double-layer sealing structure, the device is ensured to operate stably in humid or harsh environments, extending the life of the power generation device. Compared with a single-layer sealing design, this device provides higher waterproof performance and is particularly suitable for the variable environment during vehicle operation.

[0039] Furthermore, the induced current, after rectification, can be directly used by an external load or stored as energy through an energy storage device. Here, an external load refers to any device or system that receives and consumes electrical energy provided by a power source. Simply put, an external load is the power-consuming terminal of a power generation device, used to perform a specific function or operation.

[0040] For example, it can be used in LED lighting fixtures to provide illumination by using induced current.

[0041] Used in electric motors: to drive mechanical devices, such as the motors of electric vehicles or other rotating equipment.

[0042] For use in electronic devices such as mobile phones, tablets, or small household appliances.

[0043] Accordingly, a rectifier is provided at the output terminal of coil 24 to convert the induced current from alternating current to direct current, in order to meet the needs of different types of external loads or energy storage devices. In another embodiment, the vehicle structure 1 shown in FIG1 is an electric vehicle, with the wheel power generation device 100 proposed in this invention configured on both the front and rear wheels. Referring to FIG6, when the tire 50 in the wheel power generation device 100 rotates with the wheel frame structure 10, the first magnet group 13 moves relative to the coil 24 and the second magnet group 23 in the stationary disc structure 20. The change in the magnetic field of the first magnet group 13 and the second magnet group 23 induces an induced current in the coil 24. The output terminal of the induced current is connected to... A bridge rectifier 101 is connected to an inverter rectifier 102 and a unidirectional rectifier 103 at its two ends, respectively. The inverter rectifier 102 and the unidirectional rectifier 103 are then electrically connected to a transformer rectifier 104 and a supercapacitor 105. The supercapacitor is then connected to a main power control server 106 to provide power to other components in the vehicle structure 1, such as an instrument panel 107, a headlight 108, and other electronic accessories. It can also be used to power a motor 109 to drive the wheels and extend the driving time of the electric vehicle.

[0044] A rectifier (such as a rectifier bridge or diode) stabilizes the power output, eliminating irregular fluctuations in AC power caused by changes in the magnetic field, and ensuring stable operation of external loads. Compared to traditional generators that directly output AC power, this design provides more stable power, expands its application range, and enhances its applicability.

[0045] Furthermore, the energy storage device has an input current range of 200 amperes to 2000 amperes, adapting to high-power energy storage requirements. This high current input range, combined with the induced current output characteristics of the coil 24, ensures that the energy storage device can efficiently store instantaneously output electrical energy while avoiding damage caused by current overload.

[0046] Furthermore, the device includes at least one capacitor with a capacitance of 1 to 5 farads, which is connected to the coil 24 and the energy storage device via wires. Here, the capacitor's capacitance range of 1 to 5 farads is primarily used to absorb instantaneous fluctuations in the induced current and to work in conjunction with the energy storage device. Accordingly, the large-capacity capacitor rapidly charges and discharges in the high-frequency changing induced current to smooth the output voltage and prevent damage to the load due to instantaneous voltage fluctuations. Compared to designs relying solely on the energy storage device, this device, by introducing a capacitor, effectively improves the stability and safety of the output power, making it particularly suitable for high-frequency load scenarios requiring stable output.

[0047] Furthermore, please continue to refer to Figure 4, where the preset distance d is 1 mm to 5 mm. This is used to optimize the magnetic field coupling effect between the first magnet group 13 and the second magnet group 23, avoiding mechanical friction or loss caused by excessively small gaps, and helping to increase the amplitude of the induced voltage and reduce magnetic field loss. Traditional designs often do not consider the precise distance of magnetic field coupling, resulting in efficiency loss. This device maximizes magnetic field utilization and improves the overall performance of the power generation device through scientific distance design.

[0048] However, the above description is merely an embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and patent specification of the present invention shall still fall within the scope of the present invention.

Claims

1. A vehicle power generation system (1), which mainly includes a wheel power generation device (100) disposed in a vehicle body structure (200), wherein, The wheel-mounted power generation device (100) includes: A wheel frame structure (10) includes a hollow annular wheel frame (11) and a plurality of wheel ribs (12). The outer peripheral surface of the wheel frame (11) is used to fix a tire (50). The wheel frame (11) has an inner frame space (111) inside. The wheel ribs (12) are located on one side of the inner frame space (111) and have a central hole (112) corresponding to the axial position of the wheel frame (11). Each wheel rib (12) extends radially outward from the periphery of the central hole (112) and connects to one side of an inner wall surface (113) of the wheel frame (11) to support the wheel frame (11). A first magnet group (13) is arranged on the inner wall surface (113). A disc structure (20) is set in the inner frame space (111). A wheel axle (21) is located at the center of the disc structure (20) for passing through the central hole (112) and being fixed to a vehicle body structure (1) to remain stationary. An annular edge (22) corresponds to the inner wall surface (113) and maintains a preset distance (d). A second magnet group (23) is set in the annular edge (22). The plurality of coils (24) are arranged in a ring on the disc structure (20). Accordingly, when the tire (50) rotates with the wheel rim structure (10), the first magnet group (13) moves relative to the coil (24) in the stationary disk structure (20) and the second magnet group (23). The change in the magnetic field of the first magnet group (13) and the second magnet group (23) induces an induced current in the coil (24). The induced current can be used by an external load or stored by an energy storage device (60), and can be used for the power supply of the vehicle's internal system, or even as a power source to drive the vehicle, so as to convert the rotational kinetic energy of the tire (50) into the electrical energy required for the vehicle to perform.

2. The power generation system of the vehicle as described in claim 1, wherein the vehicle body structure is applicable to various vehicles, including but not limited to automobiles, electric vehicles, bicycles, motorcycles or other wheeled vehicles.

3. The power generation system of the vehicle as described in claim 1, wherein the winding method of the coil (24) includes: The first group of wires (S1) is formed by winding 8 coils once, and the second group of wires (S2) is formed by winding 10 coils once. The first group of wires (S1) and the second group of wires (S2) are respectively pulled out and connected to the external load or the energy storage device (60).

4. The power generation system of the vehicle as claimed in claim 2, wherein the winding design of each of the 10 coils in the second set of wires (S2) includes repeated winding of the 1st and 9th coils to increase the stability of the induced voltage and the output power.

5. The power generation system of the vehicle as described in claim 1, wherein the disc structure (20) includes an annular wall (25), a first annular sealing ring (31) and a second annular sealing ring (32) are respectively disposed on both sides of the disc structure (20) and fixed to the annular wall (25) and the annular edge (22) to form a waterproof structure.

6. The power generation system of the vehicle as described in claim 1, wherein the induced current, after rectification, can be used directly by an external load or stored as energy through an energy storage device.

7. The vehicle power generation system as described in claim 5, wherein the input current range of the energy storage device is 200 amperes to 2000 amperes to meet high power energy storage requirements.

8. The power generation system of the vehicle as claimed in claim 5, comprising at least one capacitor having a capacity of 1 to 5 farads, the capacitor being connected by wires to a coil (24) and an energy storage device, respectively.

9. The power generation system of the vehicle as claimed in claim 1, wherein the default distance (d) is 1 mm to 5 mm, for improving the magnetic field coupling effect between the first magnet group (13) and the second magnet group (23).

10. The power generation system of the vehicle as described in claim 1, wherein, The induced current generated by the wheel power generation device (100) is connected to a bridge rectifier (101), and an inverter rectifier (102) and a unidirectional rectifier (103) are connected to its two electrodes respectively. The inverter rectifier (102) and the unidirectional rectifier (103) are then electrically connected to a transformer rectifier (104), and a supercapacitor (105) is connected to it. Then, it is connected to a main power control server (106) to provide power to other components in the vehicle body structure (1).

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