Electric bicycle wireless charging system

Abstract

The application provides an electric bicycle wireless charging system, belonging to the electric bicycle charging technical field, and comprises the following steps: when the electric bicycle is parked at a specified position of a base station, the electric bicycle contacts and presses a contact end of a connecting rod assembly, the connecting rod assembly moves, the connecting rod assembly drives an inductive transmitting device to move, the inductive transmitting device forms a conductive circuit outside an inductive receiving device, an alternating current passes through the inductive transmitting device to excite a magnetic field, the magnetic field is coupled to the inductive receiving device to generate an induced current, the induced current is gathered through the inductive receiving device and then transmitted to a battery of the electric bicycle to charge the electric bicycle, so that the electric bicycle is automatically charged by non-contact electromagnetic induction after being parked at the base station, the convenience of charging the electric bicycle is improved, the charging interface structure exposed outside is saved, the risk of damage to internal power supply equipment and lines of the electric bicycle is reduced, and the safety of charging and using the electric bicycle is ensured.

Description

Technical Field

[0001] This application belongs to the field of electric bicycle technology, specifically relating to a wireless charging system for electric bicycles. Background Technology

[0002] Electric bicycles are lightweight and energy-efficient, and with advancements in new energy technologies and increasing urban congestion, they have become a primary choice for short-distance travel for an increasing number of people. However, the current charging methods for electric bicycles face significant challenges. They generally rely on wired charging, requiring users or maintenance personnel to frequently plug and unplug devices, which is inconvenient. Long-term use can also easily cause wear and tear, poor contact, and even oxidation of the charging interface, affecting the reliability and lifespan of the charging process, and thus requires improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, an embodiment of this application proposes a wireless charging system for electric bicycles, comprising: Electric motorcycles and base stations; the electric motorcycles are parked outside the base station. A sensor receiver is installed on the motorcycle. Linkage assembly, which is located inside the base station, with the contact end of the linkage assembly extending outside the base station; The inductive transmitter is installed on the base station and is connected to the connecting end of the linkage assembly. Through the transmission of the linkage assembly, the inductive transmitter forms a conductive circuit on the outside of the inductive receiver.

[0005] In one feasible implementation, the sensing receiver is mounted on the wheel of the motorcycle, which is parked outside the base station.

[0006] In one feasible implementation, the base station is provided with a guide surface whose shape is adapted to the shape of a wheel; A movable groove is provided on the guide surface, and the contact end of the connecting rod assembly passes through the movable groove, allowing the contact end of the connecting rod assembly to move within the movable groove.

[0007] In one feasible implementation, the wheel includes: The wheel rim and tire are fitted on the outside of the wheel rim, the tire is in contact with the outer wall of the base station, and the tire is in contact with the contact end of the connecting rod assembly. The sensing and receiving device includes: The guide is embedded in the wheel rim and is coaxially arranged with the wheel rim. The guide is rotatably connected to the wheel rim, and the wheel rim rotates relative to the guide. The guide has internal wiring that is electrically connected to the motorcycle's battery. The magnetic core is arranged inside the rim along the circumference of the rim. The magnetic core is connected to the rim and rotates synchronously with the rim. The receiving coil is wound around the outside of the magnetic core and is fixedly connected to the guide. There is a gap between the receiving coil and the magnetic core, and there is a gap between the receiving coil and the rim.

[0008] In one feasible implementation, the wireless charging system for electric bicycles further includes: Two threading rods are provided. The first end of the threading rod is connected to the guide, and the second end of the threading rod is fitted on the outside of the magnetic core. The second end of the threading rod contacts the end of the receiving coil, and the threading rod limits the position of the receiving coil. The two threading rods respectively limit the two ends of the receiving coil.

[0009] In one feasible implementation, the wireless charging system for electric bicycles further includes: The roller is positioned between the rim and the magnetic core. The roller is connected to the second end of the threading rod, and the roller makes rolling contact with the rim.

[0010] In one feasible implementation, the inductive transmitting device includes: Two transmitting conductors, the first end of which is rotatably connected to the base station, and the second end of which extends away from the base station. The two transmitting conductors are in contact with each other to form a conductive circuit. The linkage assembly includes: The wheel link is rotatably connected to the base station, and the first end of the wheel link extends outside the base station. The sliding link is slidably connected to the top surface of the base station; The first end of the support link is rotatably connected to the second end of the wheel link, and the second end of the support link is rotatably connected to the first end of the sliding link. Two receiving coil connecting rods are connected. The first end of the receiving coil connecting rod is rotatably connected to the second end of the sliding connecting rod. The second end of the receiving coil connecting rod is rotatably connected to the transmitting conductor. The receiving coil connecting rods and the transmitting conductors correspond one-to-one.

[0011] In one feasible implementation, the wireless charging system for electric bicycles further includes: A tension spring, with its first end connected to the base station and its second end connected to the first hinge shaft; The first hinge axis is the connecting axis between the receiving coil connecting rod and the transmitting conductor.

[0012] In one feasible implementation, the inductive transmitting device further includes: An insulating sleeve is wrapped around the outside of the transmitting conductor along the circumference of the transmitting conductor. The two transmitting conductors are in contact with each other through the end face of the second end to form a conductive circuit.

[0013] In one feasible implementation, two transmitting conductors are fastened to the outside of the wheel, and the two transmitting conductors form a relief cavity, with a gap between the cavity wall and the outer surface of the wheel.

[0014] The wireless charging system for electric bicycles proposed in this application has the following advantages compared with the prior art: The wireless charging system for electric bicycles provided in this application includes an electric bicycle, a base station, an inductive receiver, a linkage assembly, and an inductive transmitter. The inductive transmitter on the base station generates current in conjunction with the inductive receiver on the electric bicycle to charge the bicycle. When the electric bicycle is parked at a designated position on the base station, it contacts and presses the contact end of the linkage assembly, causing the linkage assembly to move. The movement of the linkage assembly drives the inductive transmitter to move, forming a conductive circuit on the outside of the inductive receiver. Alternating current passes through the inductive transmitter to generate a magnetic field, which couples to the inductive receiver to generate an induced current. This induced current is then collected by the inductive receiver and transmitted to the electric bicycle's battery to charge the bicycle. Thus, after the electric bicycle is parked at the base station, it is automatically charged using non-contact electromagnetic induction. This not only improves the convenience of electric bicycle charging but also eliminates the need for exposed charging interface structures, reducing the risk of damage to the electric bicycle's internal power supply equipment and wiring, and ensuring the safety of electric bicycle charging and use. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structural diagram of a wireless charging system for electric bicycles according to an embodiment of this application; Figure 2 A schematic structural diagram of a linkage assembly of a wireless charging system for electric bicycles according to an embodiment of this application; Figure 3 A schematic structural diagram of an inductive receiving device for a wireless charging system for electric bicycles according to an embodiment of this application; in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows: 11. Base station; 12. Inductive receiving device; 13. Linkage assembly; 14. Inductive transmitting device; 15. Wheel; 16. Guide surface; 17. Movable groove; 18. Threading rod; 19. Roller; 20. Tension spring; 21. Relief cavity; 121. Guide element; 122. Magnetic core; 123. Receiving coil; 131. Wheel link; 132. Sliding link; 133. Support link; 134. Receiving coil link; 141. Transmitter conductor; 142. Insulating sleeve; 151. Wheel rim; 152. Tire. Detailed Implementation

[0016] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0019] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] like Figure 1As shown in the embodiment of this application, a wireless charging system for electric bicycles is proposed, including: an electric bicycle, a base station 11, an inductive receiver 12, a linkage assembly 13, and an inductive transmitter 14; the electric bicycle is parked outside the base station 11; the inductive receiver 12 is installed on the electric bicycle; the linkage assembly 13 is disposed inside the base station 11, and the contact end of the linkage assembly 13 extends outside the base station 11; the inductive transmitter 14 is installed on the base station 11, and the inductive transmitter 14 is connected to the connection end of the linkage assembly 13. Through the transmission of the linkage assembly 13, the inductive transmitter 14 forms a conductive circuit outside the inductive receiver 12.

[0021] The wireless charging system for electric bicycles provided in this application includes an electric bicycle, a base station 11, an inductive receiver 12, a linkage assembly 13, and an inductive transmitter 14. The inductive transmitter 14 on the base station 11 generates current by cooperating with the inductive receiver 12 on the electric bicycle to charge the electric bicycle. When the electric bicycle is parked at a designated position on the base station 11, the electric bicycle contacts and presses the contact end of the linkage assembly 13, causing the linkage assembly 13 to move. The movement of the linkage assembly 13 drives the inductive transmitter 14 to move, so that the inductive transmitter 14 is in contact with the inductive receiver 12. A conductive circuit is formed on the outside of 2. Alternating current is generated by the induction transmitter 14 to induce a magnetic field. The magnetic field is coupled to the induction receiver 12 to generate an induced current. The induced current is collected by the induction receiver 12 and transmitted to the battery of the electric bicycle to charge the electric bicycle. Thus, after the electric bicycle stops at the base station 11, it is automatically charged by non-contact electromagnetic induction. This not only improves the convenience of charging the electric bicycle, but also eliminates the exposed charging interface structure, reduces the risk of damage to the internal power supply equipment and wiring of the electric bicycle, and ensures the safety of charging and using the electric bicycle.

[0022] Furthermore, the base station 11 is installed on the ground, and the interior of the base station 11 has space for installation and for the movement of the linkage assembly 13.

[0023] like Figure 1 As shown, in one possible implementation, the sensing receiver 12 is mounted on the wheel 15 of the motorcycle, which is parked outside the base station 11.

[0024] In this technical solution, when the electric bicycle is parked, the wheel 15 presses against the contact end of the linkage assembly 13, triggering the linkage assembly 13 to move together, thereby turning on the circuit of the induction transmitter 14, so that the parking action triggers charging in one step, simplifying the user's operation process and optimizing the overall charging experience.

[0025] Furthermore, wheel 15 is the front wheel of the electric bicycle, which facilitates observation and control of the contact between the vehicle road and the contact end of the linkage assembly 13.

[0026] like Figure 1 and Figure 2 As shown, in one feasible implementation, the base station 11 is provided with a guide surface 16, the shape of which is adapted to the shape of the wheel 15; the guide surface 16 is provided with a movable groove 17, the contact end of the connecting rod assembly 13 passes through the movable groove 17, and the contact end of the connecting rod assembly 13 moves within the movable groove 17.

[0027] In this technical solution, when the electric bicycle drives towards the base station 11, the wheels 15 of the electric bicycle slide into the designated position of the base station 11 along the arc-shaped guide surface 16 of the base station 11, ensuring that the wheels 15 can touch the contact end of the linkage assembly 13 and apply pressure to the contact end of the linkage assembly 13, thereby ensuring that the circuit of the induction transmitter 14 is directly triggered after the electric bicycle stops in place, so as to realize charging; the movable groove 17 limits the contact end of the linkage assembly 13 to prevent the wheels 15 from squeezing the linkage assembly 13 from the side, causing the linkage assembly 13 to deform, thereby ensuring that the induction transmitter 14 acts in a timely and appropriate manner.

[0028] Furthermore, an arc-shaped groove is provided on the guide surface 16. When the electric bicycle is parked, the arc-shaped groove automatically and accurately positions and axially aligns the electric bicycle wheel 15, ensuring that the contact end of the wheel 15 and the connecting rod assembly 13 are in frontal contact, preventing the wheel 15 from generating lateral pressure on the connecting rod assembly 13, which helps to extend the service life of the connecting rod assembly 13.

[0029] like Figure 1 and Figure 3 As shown, in one feasible embodiment, the wheel 15 includes: a rim 151 and a tire 152; the tire 152 is fitted onto the outer side of the rim 151, the tire 152 is in contact with the outer wall of the base station 11, and the tire 152 is in contact with the contact end of the connecting rod assembly 13; the sensing receiving device 12 includes: a guide 121, a magnetic core 122, and a receiving coil 123; the guide 121 is embedded in the rim 151, the guide 121 is coaxially arranged with the rim 151, the guide 121 is rotatably connected to the rim 151, and the rim 151 is in contact with the outer wall of the base station 11; the sensing receiving device 12 includes: a guide 121, a magnetic core 122, and a receiving coil 123; the guide 121 is embedded in the rim 151, the guide 121 is coaxially arranged with the rim 151, and the guide 121 is rotatably connected with the rim 151. The guide 121 rotates; a wire is provided inside the guide 121, and the wire is electrically connected to the battery of the electric bicycle; the magnetic core 122 is arranged circumferentially inside the rim 151, the magnetic core 122 is connected to the rim 151, and the magnetic core 122 and the rim 151 rotate synchronously; the receiving coil 123 is wound around the outside of the magnetic core 122, there is a gap between the receiving coil 123 and the magnetic core 122, there is a gap between the receiving coil 123 and the rim 151, and the receiving coil 123 is fixedly connected to the guide 121.

[0030] In this technical solution, the guide 121 is rotatably connected to the rim 151, and the guide 121 does not rotate with the rim 151 to prevent the internal wires of the guide 121 from getting tangled. The magnetic core 122 is set on the rim 151 and rotates synchronously with the rim 151. The receiving coil 123 is wound on the magnetic core 122, and there are gaps between the receiving coil 123 and the magnetic core 122 and the rim 151 to avoid friction between the magnetic core 122 and the rim 151. The circuit of the induction transmitting device 14 is turned on to generate an alternating current. The alternating current excites a magnetic field, which is coupled to the receiving coil 123 to generate an induced current. The induced current is converged by the magnetic core 122 and then transmitted to the battery of the electric bicycle through the wires inside the guide 121 to charge the electric bicycle. The position of the receiving coil 123 on the magnetic core 122 is fixed by the guide 121 to ensure that the relative position of the receiving coil 123 and the magnetic core 122 is stable when the magnetic core 122 rotates with the wheel 15, thus maintaining the continuity of dynamic and static power supply.

[0031] Furthermore, the magnetic core 122 surrounds the entire inner edge of the wheel rim 151, providing a path for the magnetic field, and the magnetic core 122 is integrated with the wheel rim 151 to avoid weight imbalance caused by external modifications.

[0032] Furthermore, the guide body is installed at the center of the rim 151, and the guide 121 is used as the axle of the motorcycle wheel 15 to simplify the structure of the wheel 15.

[0033] like Figure 3 As shown, in one feasible embodiment, the wireless charging system for electric bicycles further includes: two wire rods 18, the first end of which is connected to the guide 121, the second end of which is fitted onto the outside of the magnetic core 122, the second end of which contacts the end of the receiving coil 123, and the wire rods 18 limit the receiving coil 123; wherein, the two wire rods 18 limit the two ends of the receiving coil 123 respectively.

[0034] In this technical solution, the threading rod 18 is a hollow cavity. Both threading rods 18 are fixed on the guide member 121, and the two threading rods 18 respectively contact the two ends of the receiving coil 123 to position the receiving coil 123, so that the receiving coil 123 is located in the fixed position of the magnetic core 122. At the same time, the threading rod 18 serves as a protective structure for the outgoing wire of the receiving coil 123. The outgoing wire of the receiving coil 123 is introduced into the guide member 121 along the threading rod 18 and then connected to the battery of the electric bicycle, preventing the receiving coil 123 from being exposed and ensuring the safety of the charging system.

[0035] like Figure 3As shown, in one feasible embodiment, the electric bicycle wireless charging system further includes: a roller 19, which is disposed between the wheel rim 151 and the magnetic core 122, the roller 19 is connected to the second end of the wire rod 18, and the roller 19 makes rolling contact with the wheel rim 151.

[0036] In this technical solution, the roller 19 makes rolling contact with the rim 151 and is connected to the threading rod 18. The roller 19 provides rolling support for the threading rod 18. During the charging process, if the wheel 15 moves slightly due to external force, the roller 19 rolls relative to the rim 151, ensuring that the relative position of the receiving coil 123 and the magnetic core 122 remains stable when the wheel 15 rotates, thus maintaining the continuity of dynamic and static power supply.

[0037] Furthermore, the outer wall of the magnetic core 122 and the inner wall of the rim 151 form an annular rolling groove, in which the roller 19 rolls.

[0038] like Figure 1 and Figure 2 As shown, in one feasible embodiment, the inductive transmitting device 14 includes: two transmitting conductors 141, the first end of which is rotatably connected to the base station 11, and the second end of which extends away from the base station 11. The two transmitting conductors 141 contact each other to form a conductive circuit. The linkage assembly 13 includes: a wheel 15 linkage, a sliding linkage 132, a support linkage 133, and two receiving coil 123 linkages. The wheel 15 linkage is rotatably connected to the base station 11. The first end of the wheel 15 link extends out of the base station 11; the sliding link 132 is slidably connected to the top surface of the base station 11; the first end of the support link 133 is rotatably connected to the second end of the wheel 15 link, and the second end of the support link 133 is rotatably connected to the first end of the sliding link 132; the first end of the receiving coil 123 link is rotatably connected to the second end of the sliding link 132, and the second end of the receiving coil 123 link is rotatably connected to the transmitting conductor 141, with the receiving coil 123 link and the transmitting conductor 141 corresponding one-to-one.

[0039] In this technical solution, after the wheel 15 stops in place, the wheel 15 contacts and presses down on the wheel 15 connecting rod, causing the wheel 15 connecting rod to rotate counterclockwise around the hinge point with the base station 11. The wheel 15 connecting rod pushes the support connecting rod 133 upward, and the support connecting rod 133 drives the sliding connecting rod 132 to slide away from the wheel 15. The support connecting rod 133 drives the two receiving coil 123 connecting rods to move closer to each other. The two receiving coil 123 connecting rods respectively drive the two transmitting conductors 141 to rotate around the hinge point on the base station 11, so that the two transmitting conductors 141 come into contact with each other and conduct electricity, thereby forming a closed circuit and starting to conduct electricity, generating a magnetic field.

[0040] like Figure 1and Figure 2 As shown, in one feasible implementation, the electric bicycle wireless charging system further includes: a tension spring 20; the first end of the tension spring 20 is connected to the base station 11, and the second end of the tension spring 20 is connected to the first hinge shaft; wherein, the first hinge shaft is the connecting shaft between the receiving coil 123 connecting rod and the transmitting conductor 141.

[0041] In this technical solution, the tension spring 20 is used to drive the two transmitting conductors 141 to open and reset after the wheel 15 leaves the base station 11. The two ends of the tension spring 20 are respectively connected to the hinge point of the receiving coil 123 connecting rod and the base station 11. During the process of the wheel 15 leaving the base station 11, the pressure of the connecting rod assembly 13 on the wheel 15 gradually decreases, the connecting rod assembly 13 unfolds, and at the same time the tension spring 20 provides a reset force. The tension spring 20 pulls the two transmitting conductors 141 away from each other, so that the closed circuit is broken. After the electric bicycle leaves the base station 11, the induction transmitting device 14 is automatically cut off, thereby improving the charging safety, simplifying the user operation process, extending the service life of the equipment, and optimizing the overall charging experience.

[0042] like Figure 2 As shown, in one feasible embodiment, the inductive transmitting device 14 further includes an insulating sleeve 142, which is circumferentially wrapped around the outside of the transmitting conductor 141, and the two transmitting conductors 141 are in contact with each other through the end faces of the second end to form a conductive circuit.

[0043] In this technical solution, the insulating sleeve 142 provides insulation protection for the transmitting conductor 141. The two transmitting conductors 141 form a conductive circuit through the mutual contact of their end faces. The insulating sleeve 142 physically isolates the transmitting conductor 141, further reducing the erosion of the transmitting conductor 141 by rainwater and dust. The tension spring 20 drives the induction transmitting device 14 to self-reset, which, together with the physical isolation of the insulating sleeve 142, achieves a power-off response, eliminating the risk of electric arc, reducing the risk of electric shock to personnel, and reducing the risk of short circuit and fire in the charging system, thereby improving charging safety.

[0044] like Figure 1 As shown, in one feasible embodiment, two transmitting conductors 141 are fastened to the outside of the wheel 15, and the two transmitting conductors 141 form a relief cavity 21, with a gap between the cavity wall of the relief cavity 21 and the outer surface of the wheel 15.

[0045] In this technical solution, there is a certain distance between the transmitting conductor 141 and the wheel 15 and the sensing receiver 12, thereby ensuring that the wheel 15 has enough space to move backward when the transmitting conductor 141 separates, so that the pressure of the wheel 15 on the contact end of the connecting rod assembly 13 gradually decreases, thereby giving the connecting rod assembly 13 space to perform a reset movement. In conjunction with the tension spring 20 pulling the transmitting conductor 141, the sensing transmitter 14 can automatically open during the movement of the wheel 15 out of the base station 11, the sensing transmitter 14 disconnects the power supply, and the charging system returns to standby state.

[0046] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A wireless charging system for electric bicycles, characterized in that, The wireless charging system for electric bicycles includes: Electric bicycle and base station, wherein the electric bicycle is parked outside the base station; A sensor receiving device is installed on the electric bicycle; A linkage assembly, wherein the linkage assembly is disposed inside the base station and the contact end of the linkage assembly extends outside the base station; An inductive transmitting device is installed on the base station and is connected to the connecting end of the linkage assembly. Through the transmission of the linkage assembly, the inductive transmitting device forms a conductive circuit on the outside of the inductive receiving device.

2. The wireless charging system for electric bicycles according to claim 1, characterized in that, The sensing receiver is mounted on the wheel of the electric bicycle, which is parked outside the base station.

3. The wireless charging system for electric bicycles according to claim 2, characterized in that, The base station is provided with a guide surface, the shape of which is adapted to the shape of the wheel; A movable groove is provided on the guide surface, and the contact end of the connecting rod assembly passes through the movable groove and moves within the movable groove.

4. The wireless charging system for electric bicycles according to claim 2, characterized in that, The wheel includes: The wheel rim and tire, wherein the tire is fitted on the outside of the wheel rim, the tire is in contact with the outer wall of the base station, and the tire is in contact with the contact end of the linkage assembly; The sensing and receiving device includes: A guide member is embedded in the wheel rim, the guide member is coaxially arranged with the wheel rim, the guide member is rotatably connected to the wheel rim, and the wheel rim rotates relative to the guide member; The guide is internally provided with a wire, which is electrically connected to the battery of the electric bicycle; A magnetic core is disposed circumferentially inside the rim and connected to the rim, and the magnetic core rotates synchronously with the rim. A receiving coil is wound around the outside of the magnetic core and fixedly connected to the guide. There is a gap between the receiving coil and the magnetic core, and a gap between the receiving coil and the rim.

5. The wireless charging system for electric bicycles according to claim 4, characterized in that, The wireless charging system for electric bicycles also includes: Two threading rods are provided, with the first end of each threading rod connected to the guide and the second end of each threading rod fitted onto the outside of the magnetic core. The second end of each threading rod contacts the end of the receiving coil, and the threading rod limits the position of the receiving coil. The two threading rods respectively limit the two ends of the receiving coil.

6. The wireless charging system for electric bicycles according to claim 5, characterized in that, The wireless charging system for electric bicycles also includes: A roller is disposed between the rim and the magnetic core, the roller is connected to the second end of the threading rod, and the roller makes rolling contact with the rim.

7. The wireless charging system for electric bicycles according to claim 2, characterized in that, The inductive transmitting device includes: Two transmitting conductors, the first end of which is rotatably connected to the base station, and the second end of which extends away from the base station, and the two transmitting conductors contact each other to form a conductive circuit; The linkage assembly includes: A wheel link, which is rotatably connected to the base station, with the first end of the wheel link extending outside the base station; A sliding link, which is slidably connected to the top surface of the base station; A support link, wherein the first end of the support link is rotatably connected to the second end of the wheel link, and the second end of the support link is rotatably connected to the first end of the sliding link; Two receiving coil connecting rods are provided, with the first end of the receiving coil connecting rod rotatably connected to the second end of the sliding connecting rod, and the second end of the receiving coil connecting rod rotatably connected to the transmitting end conductor. The receiving coil connecting rods and the transmitting end conductors correspond one-to-one.

8. The wireless charging system for electric bicycles according to claim 7, characterized in that, The wireless charging system for electric bicycles also includes: A tension spring, the first end of which is connected to the base station, and the second end of which is connected to the first hinge shaft; Wherein, the first hinge axis is the connecting axis between the receiving coil connecting rod and the transmitting end conductor.

9. A wireless charging system for electric bicycles according to claim 7, characterized in that, The inductive transmitting device also includes: An insulating sleeve is provided around the outside of the transmitting conductor along its circumference, and the two transmitting conductors are in contact with each other through the end faces of their second ends to form a conductive circuit.

10. A wireless charging system for electric bicycles according to any one of claims 7 to 9, characterized in that, The two transmitting conductors are fastened to the outside of the wheel, and the two transmitting conductors form a relief cavity, with a gap between the cavity wall and the outer surface of the wheel.

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