Wheel passive power recovery power generation device

Abstract

The invention provides a wheel passive power recovery power generation device. The wheel passive power recovery power generation device comprises a deformation driving unit arranged in a wheel tire, an airflow generation and guide unit coaxially arranged in the tire body and an energy conversion unit arranged on the inner side of a hub. The interior of a tire body of the deformation driving unit is divided into an upper sealed cavity and a lower sealed cavity by an annular isolation pad, and each cavity is internally provided with a plurality of sub-cavities. The airflow generation and guide unit comprises an annular airflow channel with a Tesla valve structure inside, and the sub-cavities are communicated with the airflow channel through the through holes to form a closed gas circulation loop. The energy conversion unit comprises an annular fan and an annular motor which are coaxial. When the wheel rolls, the tire body periodically deforms to drive the sub-cavities to alternately compress and expand, the sub-cavities cooperate with the Tesla valve structure, net one-way circulating airflow is generated and maintained in a loop, and the annular fan is driven to drive the annular motor to generate electricity. The device has no electromagnetic dragging feeling, does not influence driving, is compact in structure, and realizes passive recovery of inherent deformation energy of wheel rolling.

Description

Technical Field

[0001] This invention relates to the field of vehicle energy-saving devices, and in particular to a wheel passive power recovery and power generation device. Background Technology

[0002] Against the backdrop of the automotive industry's deepening development towards electrification and energy conservation, improving the energy utilization efficiency of vehicles has become a key research direction. During vehicle operation, in addition to the energy used for propulsion and overcoming resistance, some energy is dissipated in the form of mechanical vibration and braking heat. Recovering and reusing this lost energy is of great significance for improving vehicle energy efficiency and extending driving range.

[0003] Currently, there are two main technological approaches to kinetic energy recovery from wheels. One approach involves converting energy using a generator directly connected to the wheel or axle. While this method can directly capture rotational kinetic energy, the electromagnetic resistance of the generator creates a continuous "dragging" sensation during normal vehicle operation, interfering with driving and affecting the driving experience. The other approach focuses on capturing the vertical vibration energy of the vehicle when passing over speed bumps or other specific scenarios, but its application scenarios and energy sources are limited.

[0004] Besides the aforementioned methods for recovering mechanical energy, utilizing thermoelectric materials to recover waste heat from braking or exhaust systems is another important approach. Research has shown that integrating radiative cooling films has successfully increased the output power of thermoelectric generators, demonstrating the application potential for recovering low-grade heat energy. However, both the impact of traditional mechanical energy recovery on the driving experience and the dependence of heat recovery technologies on specific heat sources indicate that efficiently recovering and converting passively dissipated mechanical energy during normal vehicle operation, especially without interfering with normal driving or relying on specific external conditions, remains a technological direction that requires further exploration.

[0005] Therefore, a wheel passive power recovery and power generation device is proposed to address the current shortcomings. Summary of the Invention

[0006] In view of this, embodiments of the present invention provide a wheel passive power recovery and power generation device to solve or improve the technical problems existing in the prior art.

[0007] The technical solution of this invention is implemented as follows: a wheel passive power recovery and power generation device, comprising: The deformation drive unit has a tire carcass located inside the wheel tire and capable of periodically deforming as the wheel rotates, and has an annular septum coaxially located inside the tire carcass, the annular septum dividing the interior of the tire carcass into two independent annular sealed chambers. An airflow generating and guiding unit is coaxially disposed within the tire body. It has an annular airflow channel supported by an annular septum and containing a Tesla valve structure. Each sealed chamber has multiple sub-cavities evenly arranged circumferentially. The wall of the annular airflow channel has through holes corresponding to the positions of each sub-cavity, so that each sub-cavity is connected to the inner cavity of the annular airflow channel through the corresponding through holes, forming a closed gas circulation loop. The airflow generating and guiding unit is used to drive the generation of gas in the gas circulation loop and maintain net flow in a single direction by utilizing the periodic changes in the volume of the sub-cavities. The energy conversion unit, located inside the wheel hub, has a coaxially arranged annular fan and an annular motor. The two ends of the annular airflow channel are connected to the air inlet and air outlet of the annular fan respectively through extended connecting pipes; When the wheel rolls, the periodic deformation of the tire body causes the sub-cavities to alternately compress and expand, driving the gas to flow continuously in a reinforced single direction in the gas circulation loop, thereby driving the annular fan to rotate in one direction and driving the annular motor to generate electricity.

[0008] As an improvement, the cross-section of the corresponding sub-cavity in each sealed chamber is V-shaped along the flow direction of the gas circulation loop. When the sub-cavity located on the lower side of the tire body is compressed, the gas inside is discharged into the annular airflow channel and flows in the first direction. When the sub-cavity located on the upper side of the tire body recovers its deformation and expands, the gas is drawn into the sub-cavity from the annular airflow channel in the second direction opposite to the first direction, thereby working in conjunction with the Tesla valve structure to enhance the net unidirectional circulating airflow formed in the annular airflow channel.

[0009] As an improvement, the annular airflow channel is an annular tubular structure with a C-shaped cross-section. The two connecting pipes extend from both ends of the annular airflow channel to the inner side of the wheel hub and are respectively sealed to the air inlet and air outlet of the annular fan.

[0010] As an improvement, at least one of the connecting pipes is integrated with an inflation port and / or a pressure detector, the inflation port being used to fill or release gas into the closed gas circulation loop, and the pressure detector being used to monitor the gas pressure in the gas circulation loop.

[0011] As an improvement, the annular motor is fixed coaxially with the wheel hub, and the annular fan is fixed coaxially with the outer side of the annular motor.

[0012] As an improvement, the annular airflow channel is a cylindrical tube made of soft material, and the connecting tube is made of metal.

[0013] As an improvement, the annular airflow channel is configured as a spiral annular structure with at least one turn along its axial direction.

[0014] As an improvement, the tire body is made of an elastic material, and its outer surface is fitted and fixed to the inner wall of the wheel tire.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention captures the periodic deformation energy of the tire body through an independent, closed air circuit system located inside the tire, and the energy conversion process does not interfere with the vehicle's original drivetrain. This effectively avoids the "dragging sensation" caused by electromagnetic resistance, and achieves the recovery of the inherent mechanical energy dissipated during wheel rolling without affecting the vehicle's power performance and driving experience.

[0016] This invention combines a sub-cavity with an annular airflow channel that integrates a Tesla valve. The sub-cavity converts random volume changes into directional airflow pulsations, while the Tesla valve utilizes its hydrodynamic characteristics to passively rectify and lock the direction of these pulsations. Together, they ensure the generation and maintenance of a stable net unidirectional circulating airflow during normal wheel rolling, thereby efficiently and reliably converting random, fluctuating deformation energy into directional airflow energy that can be used to drive a generator.

[0017] The deformation drive, airflow guidance, and energy conversion units of this invention are all coaxially arranged within the limited space formed by the tire and the wheel hub, resulting in a compact structure. Its energy source is the inherent motion of the wheel touching the ground and lifting off, without relying on specific external excitations such as speed bumps, thus having wider applicability.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3This is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the present invention; Figure 6 for Figure 5 A magnified view of a section at point B in the middle.

[0021] Figure label: 1. Tire body; 2. Annular septum; 3. Annular airflow channel; 4. Sub-cavity; 5. Through hole; 6. Annular fan; 7. Annular motor; 8. Connecting pipe; 9. Inflation hole; 10. Pressure detector; 11. Wheel. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features. In this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," and "fixation" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, a direct connection, a welding connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the accompanying drawings and specific circumstances.

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] Combined with appendix Figure 1-6As shown, this embodiment of the invention provides a wheel passive energy recovery power generation device, including a deformation drive unit, an airflow generation and guiding unit, and an energy conversion unit. The deformation drive unit has a tire body 1 located inside the wheel tire and capable of periodically deforming with wheel rotation, and an annular spacer 2 coaxially located inside the tire body 1. The annular spacer 2 divides the interior of the tire body 1 into two independent annular sealed chambers. Specifically, the tire body 1 is made of an elastic material, and its outer surface is fixedly attached to the inner wall of the wheel tire. Utilizing the elasticity of its material, the area of ​​the tire body 1 in contact with the ground undergoes compression deformation due to the load when the wheel rolls, and returns to its original shape after detaching from contact, thereby converting the mechanical energy of the wheel's rolling into the mechanical energy of its own periodic volume change (deformation). The annular spacer 2 divides the internal cavity of the tire body 1 into two independent annular sealed chambers, forming the structural basis for two working areas with opposite functions (compression and expansion), ensuring that the gas flow paths of the upper and lower chambers are independent and orderly.

[0026] The airflow generating and guiding unit is coaxially arranged in the central area of ​​the tire body 1, and has an annular airflow channel 3 supported by an annular septum 2 and having a Tesla valve structure inside. Specifically, the annular airflow channel 3 is a cylindrical tube made of soft material, and the annular airflow channel 3 is coiled along its axial direction as a spiral annular structure of at least one turn.

[0027] The annular airflow channel 3 serves as the gas channel connecting all sub-cavities and guiding gas flow. It integrates a Tesla valve structure, a fluid control structure without moving parts. Through its unique flow channel geometry, the Tesla valve passively guides and enhances airflow in a single direction (net flow direction) using fluid dynamics principles, while significantly suppressing or even blocking flow in the opposite direction (counterflow). Furthermore, its multi-coil arrangement greatly increases the effective physical length of the airflow channel, thereby significantly increasing the path length and inertia of the gas flow. This helps suppress and attenuate pressure pulsations and potential reverse flow tendencies caused by the alternating compression / expansion of the sub-cavities 4, making the gas more likely to maintain a certain direction once it begins to flow, thus enhancing the stability and continuity of the net unidirectional airflow. Simultaneously, its soft material allows it to adapt to minor deformations within the tire body, avoiding stress or leakage caused by rigid connections.

[0028] Each sealed chamber has multiple sub-cavities 4 evenly arranged circumferentially. The wall of the annular airflow channel 3 is provided with through holes 5 corresponding to each sub-cavity 4, so that each sub-cavity 4 is connected to the inner cavity of the annular airflow channel 3 through the corresponding through holes 5, together forming a closed gas circulation loop. The airflow generation and guiding unit is used to drive the gas in the gas circulation loop to generate a net flow enhanced in a single direction when the volume of the sub-cavity 4 changes due to the deformation of the tire body. Specifically, the sub-cavity 4, acting as an "actuator" for gas volume changes, forms a micro-pump with inherent directionality. Furthermore, the cross-section of the sub-cavity 4 corresponding to each sealed chamber is V-shaped along the gas circulation loop flow direction. When the sub-cavity 4 located on the lower side of the tire body 1 is compressed, the gas inside is discharged into the annular airflow channel 3 and flows in the first direction. When the sub-cavity 4 located on the upper side of the tire body 1 recovers its deformation and expands, the gas is drawn into the sub-cavity 4 from the annular airflow channel 3 in the second direction opposite to the first direction, thereby working in conjunction with the Tesla valve structure to enhance the net unidirectional circulating airflow formed in the annular airflow channel 3.

[0029] The corresponding V-shaped structure formed by the sub-cavity 4 utilizes its shape to guide the airflow direction, transforming the non-directional volume change caused by the deformation of the body 1 into a gas intake and exhaust action with a clear directional tendency. Specifically, when the sub-cavity 4 is compressed, its V-shaped walls contract, guiding the gas from the wider opening to the tip and out through the through-hole 5. This process tends to push the gas to flow in the first direction. Conversely, when the sub-cavity 4 expands, the V-shaped structure unfolds, mainly generating a suction effect from its tip opening, tending to guide the gas to be drawn in along the second direction.

[0030] It should be noted that sub-cavity 4 provides primary, pulsating directional drive, ensuring that the exhaust from the downward-pressing sub-cavity 4 and the intake from the upward-pressing sub-cavity 4 superimpose the net flow within the annular airflow channel 3 in the same direction (the first direction and the second direction are connected end-to-end in the annular loop, forming a cycle). The annular airflow channel 3, with its integrated Tesla valve, provides passive directional locking and rectification on this basis. It allows and promotes flow consistent with the positive direction of the Tesla valve, while strongly suppressing any reverse flow tendency.

[0031] During implementation, as the wheel rolls, the tire body 1 undergoes periodic deformation. The sub-cavity 4 located on the lower side (ground contact area) of the tire body 1 is compressed, and its volume decreases; the sub-cavity 4 located on the upper side (recovery area) of the tire body elastically recovers, and its volume increases.

[0032] Directional pulsation generation: The compressed sub-cavity 4 on the lower side guides the internal gas and discharges it into the annular airflow channel 3 along the first direction through the through hole 5. The negative pressure generated by the expanding sub-cavity 4 on the upper side mainly draws in gas from the annular airflow channel 3 along the second direction. Due to the V-shaped structure design, both the exhaust and intake actions contribute positively to the formation of a net flow along the same circulation direction within the annular airflow channel 3.

[0033] Synergistic enhancement and locking of net unidirectional flow: The aforementioned directional pulsating airflow enters the annular airflow channel 3 integrated with the Tesla valve through the through hole 5. At this time, the flow, which is consistent with the Tesla valve structure and the preset net circulation direction (i.e. the direction formed by the push of the sub-cavity 4), can pass smoothly with little kinetic energy loss because it matches the positive (low resistance) direction of the Tesla valve. At the same time, the spirally coiled annular airflow channel 3 can further utilize fluid inertia to assist in smoothing the airflow and consolidating the stability of unidirectional flow.

[0034] The final transfer of energy: Through the synergistic enhancement of the sub-cavity 4 and the Tesla valve flow channel, a stable, direction-locked net unidirectional circulating airflow is generated in the closed loop. This airflow is discharged through the connecting pipe 8, driving the annular fan 6 to rotate continuously in one direction, which in turn drives the annular motor 7 to generate electricity, completing the conversion from mechanical deformation energy to electrical energy.

[0035] The energy conversion unit is located inside the wheel hub and has a ring fan 6 and a ring motor 7 coaxially arranged; specifically, the ring motor 7 is coaxially fixed to the wheel hub, and the ring fan 6 is coaxially fixed to the outer side of the ring motor 7.

[0036] Specifically, the annular fan 6 captures and converts the net unidirectional airflow energy from the closed gas circulation loop. When a continuous unidirectional airflow passes through its blade channel, the gas exerts a force on the blades, driving the annular fan 6 to rotate around its axis, thereby converting the function of the gas flow into the rotational mechanical energy of the annular fan 6. The annular motor 7 has an annular structure, including a stator fixed to the hub and a rotor that rotates synchronously with the annular fan 6. Driven by the annular fan 6, the rotor rotates relative to the stator, cutting magnetic field lines, thereby generating an induced electromotive force based on the principle of electromagnetic induction, and outputting electrical energy, completing the final energy conversion.

[0037] In practice, the enhanced net unidirectional circulating airflow, generated by the airflow generating and guiding unit and discharged through the connecting pipe 8, is guided to the air inlet of the annular fan 6. This continuous unidirectional airflow flows through the blade passage of the annular fan 6. The airflow generates aerodynamic force on the blade surface, forming a continuous driving torque around the axis of the annular fan 6. Under the action of this torque, the annular fan 6 begins and maintains unidirectional rotation around its axis, thereby converting the kinetic and pressure energy of the airflow into the rotational mechanical energy of the annular fan 6. Since the rotor of the annular fan 6 and the annular motor 7 are coaxially fixed together, the rotation of the annular fan 6 directly and without delay drives the rotor of the annular motor 7 to rotate synchronously. The rotor of the annular motor 7 rotates in the magnetic field generated by the stator, and the conductive components on it (such as permanent magnets passing over coils or coils rotating in the magnetic field) cut the magnetic field lines. According to Faraday's law of electromagnetic induction, an alternating induced electromotive force is generated in the armature winding of the annular motor 7, which can output usable DC power for use or storage by vehicle electrical appliances.

[0038] The annular airflow channel 3 has two ends connected to the inlet and outlet of the annular fan 6 via extending connecting pipes 8. Specifically, the annular airflow channel 3 is a C-shaped annular tubular structure, and the two connecting pipes 8 extend from both ends of the annular airflow channel 3 to the inside of the wheel hub, respectively sealingly connecting to the inlet and outlet of the annular fan 6. The connecting pipes 8 are made of metal. The sealed connection between the connecting pipes 8 and the inlet and outlet of the annular fan 6 forms a closed gas circulation loop. When the wheel rolls, the periodic deformation of the tire body 1 causes the sub-cavities 4 to alternately compress and expand, driving the gas to flow continuously in a reinforced unidirectional direction within the gas circulation loop, thereby driving the annular fan 6 to rotate unidirectionally and generating electricity from the annular motor 7.

[0039] In implementation, at least one connecting pipe 8 integrates an inflation port 9 and / or a pressure detector 10. The inflation port 9 is used to fill or release gas into the closed gas circulation loop, and the pressure detector 10 is used to monitor the gas pressure within the gas circulation loop. The inflation port 9 serves as a pressure regulating port for the working medium of the device, used to fill the closed gas circulation loop with inert gas (such as nitrogen) or air to establish and maintain the initial working pressure; or to release gas from the loop to reduce the pressure. The pressure detector 10 serves as a real-time monitoring unit for the device's operating status, continuously or intermittently monitoring the absolute gas pressure or pressure changes within the closed gas circulation loop, and converting this physical quantity into an electrical signal output to provide data for status assessment, fault diagnosis, or adaptive control. Moreover, the inflation port 9 and the pressure detector 10 are connected to the connecting pipe 8 via an interface and directly communicate with the inner cavity of the annular airflow channel 3, but they themselves do not constitute part of the annular airflow channel 3 and have minimal impact on the flow resistance of the annular airflow channel 3.

[0040] In addition, the energy conversion unit also includes a rectifier and voltage regulator circuit (not shown in the figure) electrically connected to the ring motor 7. The induced electromotive force generated by the ring motor 7 when rotating and cutting magnetic field lines is usually alternating or highly pulsating direct current. The rectifier and voltage regulator circuit is used for back-end processing of the raw electrical energy output by the ring motor 7, and it includes at least a rectifier module, a filter capacitor, and a voltage regulator module. The rectifier module (e.g., a bridge rectifier circuit) converts AC to DC; the filter capacitor smooths the voltage waveform after rectification and attenuates pulsation; the voltage regulator module (e.g., a low-dropout linear regulator or a switching regulator chip) stabilizes the voltage at the nominal value required by the vehicle's low-voltage electrical system (e.g., 12V or 24V). Preferably, the rectifier and voltage regulator circuit can also integrate overvoltage protection, overcurrent protection, and energy storage buffer functions to handle power fluctuations caused by drastic changes in wheel speed, ensuring the quality and safety of the output electrical energy, and finally connecting the stabilized DC to the vehicle's auxiliary battery or related electrical loads through the output interface to realize the storage and utilization of electrical energy.

[0041] In specific implementation of this invention: 1) Capture and primary conversion of mechanical deformation energy: When the vehicle moves and the wheels roll, the tire body 1 (made of elastic material) embedded inside the tire rotates along with it. Whenever the wheel rotates to the area in contact with the ground (the contact side), the tire body 1 undergoes compression deformation due to the vehicle load; when this area leaves the ground (the recovery side), the tire body 1 returns to its original shape due to the elasticity of the material. This periodic "compression-recovery" process directly converts the mechanical energy of the wheel's rolling into the mechanical energy of the periodic volume change of the tire body 1 itself.

[0042] 2) Changes in chamber volume and generation of directional airflow pulsations: The interior of the tire body 1 is divided into two independent annular sealed chambers, upper and lower, by a coaxial annular septum 2. Each sealed chamber contains multiple sub-cavities 4 evenly distributed circumferentially. The overall cross-section of the corresponding sub-cavities 4 in the upper and lower independent annular sealed chambers has a V-shaped structure, and their opening direction is related to the preset gas circulation direction.

[0043] Lower chamber (compression zone): The tire body 1 located on the ground side is compressed, causing the lower sub-cavity 4 inside it to be squeezed, reducing its volume. Gas is pushed from the wider part to the tip and discharged into the annular airflow channel 3 through the through hole 5 on the wall with a strong directionality (defined as the first direction).

[0044] Upper chamber (expansion zone): At the same time, the upper sub-cavity 4 located on the recovery side increases in volume due to the rebound of the tire body 1, generating negative pressure (suction force), and generating a suction effect from the tip opening, drawing gas in from the annular airflow channel 3 through the through hole 5 in the second direction.

[0045] In the closed gas circulation loop formed by all the sub-cavities 4 and the annular airflow channel 3, the first direction and the second direction are connected end to end and together form a circulation direction. Therefore, the exhaust from the lower chamber and the intake from the upper chamber can form a net airflow with pulsating airflow along the same circulation direction and having a directional tendency in the annular airflow channel 3.

[0046] 3) Passive reinforcement and stabilization of net unidirectional airflow: The pulsating airflow from each sub-cavity 4 converges into the annular airflow channel 3, entering the rectification and enhancement stage: Tesla valve directional locking: The annular airflow channel 3 integrates a Tesla valve structure. When airflow attempts to flow in the same direction as the preset net circulation (i.e., the "forward" direction of the Tesla valve), the flow channel design allows it to pass smoothly with very low flow resistance. Conversely, any airflow component attempting to flow in the opposite direction ("reverse") will generate violent vortices and collisions due to the special flow channel geometry of the Tesla valve, resulting in extremely high flow resistance, thus effectively suppressing or even blocking it.

[0047] Inertial smoothing of the spiral channel: The annular airflow channel 3 is coiled into a spiral ring structure with at least one turn, which greatly increases the physical length of the airflow path. This helps to utilize the inertia of gas flow to smooth the pressure pulsations and flow fluctuations caused by the alternating operation of the sub-cavities 4, making the unidirectional flow more stable and continuous.

[0048] Synergistic effect: Sub-cavity 4 provides primary directional drive, while the Tesla valve and spiral long flow channel passively rectify, enhance, and stabilize the flow based on the pulsation. Together, they ultimately generate a stable, continuous, and direction-locked net unidirectional circulating airflow within the closed loop.

[0049] 4) Conversion of air kinetic energy into rotational mechanical energy: The enhanced net unidirectional circulating airflow is led from the annular airflow channel 3 through the connecting pipe 8 to the air inlet of the annular fan 6, and then flows back from its air outlet through the connecting pipe 8 to the annular airflow channel 3, forming a complete drive circuit.

[0050] When a continuous unidirectional airflow passes through the blade passage of the annular fan 6, it applies aerodynamic force to the blades, generating a torque that continuously drives the annular fan 6 to rotate unidirectionally around its axis. Thus, the kinetic and pressure energy of the gas flow is efficiently converted into the rotational mechanical energy of the annular fan 6.

[0051] 5) The final conversion of rotational mechanical energy into electrical energy: The rotors of the ring fan 6 and the ring motor 7 are coaxially fixed. Therefore, the rotation of the ring fan 6 directly and without delay drives the rotor of the ring motor 7 to rotate synchronously. The stator of the ring motor 7 is fixed to the hub, and the rotor rotates in the stator magnetic field, with its conductors (coils or magnets) cutting magnetic field lines. According to the law of electromagnetic induction, an induced electromotive force is generated in the armature winding of the ring motor 7, thereby outputting direct current electrical energy that can be used or stored by the vehicle.

[0052] 6) Auxiliary system workflow: Pressure Management and Monitoring: During initial assembly or maintenance of the device, an appropriate amount of gas (such as air or nitrogen) can be introduced into the entire closed gas circulation loop through the inflation port 9 integrated on the connecting pipe 8 to establish the optimal operating pressure. During device operation, the pressure detector 10, also integrated on the connecting pipe 8, continuously monitors the gas pressure in the loop, providing real-time data for device status monitoring and fault diagnosis.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wheel passive power recovery and power generation device, characterized in that, include: The deformation drive unit has a tire body (1) located inside the wheel tire and capable of periodically deforming with the rotation of the wheel, and has an annular septum (2) coaxially located inside the tire body (1), the annular septum (2) dividing the interior of the tire body (1) into two independent annular sealed chambers. The airflow generating and guiding unit is coaxially disposed inside the tire body (1) and has an annular airflow channel (3) supported by an annular septum (2) and having a Tesla valve structure inside. Each sealed chamber has multiple sub-cavities (4) evenly arranged circumferentially. The wall of the annular airflow channel (3) is provided with through holes (5) corresponding to each sub-cavity (4), so that each sub-cavity (4) is connected to the inner cavity of the annular airflow channel (3) through the corresponding through hole (5), and together they form a closed gas circulation loop. The airflow generating and guiding unit is used to drive the gas in the gas circulation loop to generate and maintain net flow in a single direction by utilizing the periodic change in the volume of the sub-cavities (4). An energy conversion unit is located inside the wheel hub and has a coaxially arranged annular fan (6) and an annular motor (7). The two ends of the annular airflow channel (3) are connected to the air inlet and air outlet of the annular fan (6) respectively through the extended connecting pipe (8); When the wheel rolls, the periodic deformation of the tire body (1) causes the sub-cavities (4) to alternately compress and expand, driving the gas to flow continuously in a reinforced single direction in the gas circulation loop, thereby driving the annular fan (6) to rotate in one direction and driving the annular motor (7) to generate electricity.

2. The wheel passive power recovery and power generation device according to claim 1, characterized in that, The cross-section of the corresponding sub-cavity (4) in each sealed chamber is V-shaped along the flow direction of the gas circulation loop. When the sub-cavity (4) located on the lower side of the tire body (1) is compressed, the gas inside is discharged into the annular airflow channel (3) and flows in the first direction. When the sub-cavity (4) located on the upper side of the tire body (1) recovers its deformation and expands, the gas is drawn into the sub-cavity (4) from the annular airflow channel (3) in the second direction opposite to the first direction, thereby working in conjunction with the Tesla valve structure to enhance the net unidirectional circulating airflow formed in the annular airflow channel (3).

3. The wheel passive power recovery and power generation device according to claim 1, characterized in that, The annular airflow channel (3) is an annular tubular structure with a C-shaped cross-section. The two connecting pipes (8) extend from both ends of the annular airflow channel (3) to the inner side of the wheel hub and are respectively sealed to the air inlet and air outlet of the annular fan (6).

4. The wheel passive power recovery and power generation device according to claim 3, characterized in that, At least one of the connecting pipes (8) is integrated with an inflation port (9) and / or a pressure detector (10), the inflation port (9) being used to fill or release gas into the closed gas circulation loop, and the pressure detector (10) being used to monitor the gas pressure in the gas circulation loop.

5. A wheel passive power recovery and power generation device according to claim 1, characterized in that, The ring motor (7) is fixed coaxially with the wheel hub, and the ring fan (6) is fixed coaxially with the outer side of the ring motor (7).

6. The wheel passive power recovery and power generation device according to claim 1, characterized in that: The annular airflow channel (3) is a cylindrical tube made of soft material, and the connecting tube (8) is made of metal material.

7. A wheel passive power recovery and power generation device according to claim 6, characterized in that, The annular airflow channel (3) is a spiral annular structure with at least one turn along its axial direction.

8. A wheel passive power recovery and power generation device according to claim 1, characterized in that, The tire body (1) is made of elastic material, and its outer surface is attached and fixed to the inner wall of the wheel tire.

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