Electric power-assisted bicycle wireless charging device

Abstract

The utility model is suitable for electric motor car technical field provides a kind of electric power-assisted bicycle wireless charging device, including power connection subassembly and wireless charging subassembly, one end of wireless charging subassembly is matched with power connection subassembly by magnetic attraction mode, the other end of wireless charging subassembly is connected with battery, one end of power connection subassembly is connected with external power supply equipment, power connection subassembly and wireless charging subassembly can realize wireless charging function to battery by magnetic attraction matched mode, cancel the external charging port on the tube under the frame, solve the charging trouble and drawbacks brought by traditional charging port external, bring good consumer experience to consumer, greatly protect charging device, prolong the service life of vehicle, reduce the consumer use cost, and novel unique wireless charging mode brings convenient to use, the safety and reliability of protection electronic circuit, fundamentally solve charging risk and maintenance difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle technology, and in particular relates to a wireless charging device for electric-assisted bicycles. Background Technology

[0002] When electric-assist bicycles need charging, the charging port is directly connected to the battery via a charging interface. The charging port is located near the battery mount, typically on the left or right side of the front of the downtube, near the battery connection cable. The charger is an external charging device; it connects to a power source, and its charging connector aligns with the charging port on the front of the downtube of the frame. After fully charging, a soft rubber cover is used to cover the charging port on the frame to prevent contamination. The charging port may also be located on the upper or side of the mid-mounted motor mount. On special models, such as suspension frames, the charging port may be located on the lower right side of the center tube. In short, different electric-assist bicycles have different charging port placements.

[0003] Existing methods for charging electric bicycles via charging ports have many drawbacks:

[0004] 1. The charging port is covered by only one cover. During riding, this soft rubber cover or cap may be rubbed off or aged and fall off, making the charging port exposed and risky.

[0005] 2. The charging port is usually located on the outside of the frame tube of the electric bicycle. The space for the charging port is provided by punching holes in the frame tube. On rainy days, water often flows into the charging port, which may cause the internal charging components to rust or short circuit during charging. The charging port may also be damaged by impact or human error, all of which may pose corresponding risks.

[0006] 3. When the charging port is damaged and needs repair, since the charging port and battery are installed together, it is necessary to remove the battery and charging port connection device, which increases the difficulty of repair.

[0007] Therefore, in view of the above situation, there is an urgent need to develop a wireless charging device for electric-assisted bicycles to overcome the shortcomings in current practical applications. Utility Model Content

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model embodiment is to provide a wireless charging device for electric-assisted bicycles to solve the problems in the background technology mentioned above.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A wireless charging device for an electric-assist bicycle includes a power connection component and a wireless charging component. The power connection component is disposed outside the downtube of the frame, and the wireless charging component is installed in a mounting hole on the downtube of the frame. One end of the wireless charging component extends to the outside of the downtube of the frame and is flush with its upper surface. The other end of the wireless charging component is magnetically engaged with the power connection component. The other end of the wireless charging component is located inside the downtube of the frame and is connected to a battery installed inside the downtube of the frame. One end of the power connection component is connected to an external power supply device.

[0011] As a further technical solution of this utility model, the bottom of the frame lower tube is provided with a locking hole that communicates with the mounting hole. The locking hole cooperates with the mounting hole to complete the installation and fixation of the wireless charging component.

[0012] As a further technical solution of this utility model, the wireless charging component includes a fixing base, a locking block, a locking screw, a receiving end, a receiving coil, and a battery connector. The fixing base is installed in the mounting hole, and the bottom of the fixing base is fixed with a locking block. The locking block is connected to a locking screw that passes through the locking hole from the bottom of the frame tube. The top of the fixing base is equipped with a receiving end, and the top of the receiving end is equipped with a receiving coil that cooperates with the power connection component. The bottom of the receiving end is equipped with a battery connector that connects to the battery. The bottom of the receiving coil is provided with a magnetic core that is magnetically attracted to the power connection component.

[0013] As a further technical solution of this utility model, the power connection assembly includes a control box, a power cord, a power plug, a transmitter charging panel, and a charger magnetic surface. Power cords are installed at both ends of the control box. One power cord is fixedly connected to the power plug, and the other power cord is connected to the transmitter charging panel. A charging magnetic surface that is magnetically attracted to the receiver is provided on one side of the transmitter charging panel.

[0014] As a further technical solution of this utility model, the transmitting end charging panel integrates a transmitting coil, a magnetic shielding layer, a control circuit and a temperature sensor; the transmitting coil is wound with multi-strand Litz wire, the magnetic shielding layer is used to prevent magnetic field leakage, and the magnetic shielding layer has a built-in positioning magnet that is magnetically attracted to the magnetic core.

[0015] As a further technical solution of this utility model, the control box integrates a control module and a battery management unit.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Connect the power plug to an external power supply device, and magnetically connect the transmitter charging panel to the receiver. The charging signal is sensed by the control module and battery management unit inside the control box, causing high-frequency alternating current to flow into the transmitting coil and generating an alternating magnetic field. The receiving coil senses the magnetic field and generates current. After rectification and voltage regulation, the current is input into the battery through the battery connector, thereby realizing the wireless charging function of the battery. This eliminates the external charging port on the frame's lower tube, solving the charging inconvenience and drawbacks caused by traditional external charging ports, providing consumers with a better consumer experience. At the same time, it greatly protects the charging device, extends the vehicle's service life, and reduces consumer operating costs. Moreover, the novel and unique wireless charging mode brings convenience to use, protects the safety and reliability of electronic circuits, and fundamentally solves the charging risks and maintenance difficulties.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the wireless charging device for electric-assisted bicycles provided in an embodiment of this utility model.

[0020] Figure 2 An exploded view of the structure of the wireless charging device for electric bicycles provided in this embodiment of the present invention.

[0021] Figure 3 An exploded view of the structure of the wireless charging device for electric bicycles provided in this embodiment of the present invention.

[0022] Figure 4 for Figure 3 A schematic diagram of the power supply connection component.

[0023] Figure 5 for Figure 3 A schematic diagram of the structure of the wireless charging component.

[0024] Reference numerals: 1-Downtube, 2-Headtube, 3-Mounting hole, 4-Power connection assembly, 41-Control box, 42-Power cord, 43-Power plug, 44-Transmitter charging panel, 45-Charger magnetic surface, 5-Wireless charging assembly, 51-Mounting base, 52-Locking block, 53-Locking screw, 54-Receiver end, 55-Receiver coil, 56-Battery connector. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] like Figures 1 to 5 As shown, an embodiment of the present invention provides a wireless charging device for an electric-assisted bicycle, including a power connection component 4 and a wireless charging component 5. The power connection component 4 is disposed outside the frame downtube 1, and the wireless charging component 5 is installed in a mounting hole 3 opened on the frame downtube 1. One end of the wireless charging component 5 extends to the outside of the frame downtube 1 and is flush with its upper surface. One end of the wireless charging component 5 is magnetically engaged with the power connection component 4. The other end of the wireless charging component 5 is located inside the frame downtube 1 and is connected to a battery installed inside the frame downtube 1. One end of the power connection component 4 is connected to an external power supply device. A head tube 2 is provided at the front end of the frame downtube 1, and the mounting hole 3 is close to the head tube 2.

[0028] The power connection component 4 can be quickly connected to the wireless charging component 5 via magnetic attraction to complete the wireless charging of the electric-assist bicycle. The wireless charging component 5 is integrated with the frame downtube 1, which solves the charging inconvenience and drawbacks caused by the traditional external charging port, bringing consumers a good consumer experience. At the same time, it greatly protects the charging device, extends the service life of the vehicle, reduces the cost of use for consumers, and the novel and unique wireless charging mode brings convenience and protects the safety and reliability of electronic circuits.

[0029] like Figures 1 to 5 As shown, in a preferred embodiment of the present invention, the bottom of the lower tube 1 of the frame is provided with a locking hole that communicates with the mounting hole 3. The locking hole cooperates with the mounting hole 3 to complete the installation and fixation of the wireless charging component 5.

[0030] like Figures 2 to 5 As shown, in a preferred embodiment of this utility model, the wireless charging component 5 includes a fixing base 51, a locking block 52, a locking screw 53, a receiving end 54, a receiving coil 55, and a battery connector 56. The fixing base 51 is installed in the mounting hole 3. The bottom of the fixing base 51 is fixed with the locking block 52, which is connected to the locking screw 53 that passes through the locking hole from the bottom of the frame tube 1. The top of the fixing base 51 is equipped with the receiving end 54, and the top of the receiving end 54 is equipped with the receiving coil 55 that cooperates with the power connection component 4. The bottom of the receiving end 54 is equipped with the battery connector 56 that connects to the battery. The bottom of the receiving coil 55 is provided with a magnetic core that is magnetically attracted to the power connection component 4, which can enhance the magnetic coupling efficiency.

[0031] like Figures 1 to 4As shown, in a preferred embodiment of the present invention, the power connection assembly 4 includes a control box 41, a power cord 42, a power plug 43, a transmitter charging panel 44, and a charger magnetic surface 45. Power cords 42 are installed at both ends of the control box 41. One power cord 42 is fixedly connected to the power plug 43, and the other power cord 42 is connected to the transmitter charging panel 44. A charging magnetic surface that is magnetically attracted to the receiver 54 is provided on one side of the transmitter charging panel 44.

[0032] The transmitter charging panel 44 integrates a transmitting coil, a magnetic shielding layer, a control circuit, and a temperature sensor. The transmitting coil is typically wound with multi-strand Litz wire to reduce high-frequency eddy current losses. The magnetic shielding layer (such as ferrite) prevents magnetic field leakage, improves energy transmission efficiency, and has a built-in positioning magnet that is magnetically attracted to the magnetic core to ensure that the transmitter charging panel 44 can be precisely aligned with the receiving coil 55 when the bicycle is parked. The outer shell of the transmitter charging panel 44 must have IP67 waterproof and dustproof capabilities to adapt to outdoor environments. The control box 41 integrates a control module and a battery management unit (BMS).

[0033] Connect the power plug 43 to an external power supply device, and magnetically connect the transmitter charging panel 44 to the receiver 54. The charging signal is sensed by the control module and battery management unit in the control box 41, which causes high-frequency AC current to be passed through the transmitter coil and generate an alternating magnetic field. The receiver coil 55 senses the magnetic field and generates current. After rectification and voltage regulation, the current is input into the battery through the battery connector 56, thereby realizing the wireless charging function of the battery. The external charging port on the lower tube 1 of the frame is eliminated, which solves the charging trouble and drawbacks caused by the traditional external charging port, brings a good consumer experience, greatly protects the charging device, extends the service life of the vehicle, reduces the cost of use for consumers, and the novel and unique wireless charging mode brings convenience to use, protects the safety and reliability of electronic circuits, and fundamentally solves the charging risks and maintenance difficulties.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wireless charging device for an electric-assisted bicycle, characterized in that, The device includes a power connection assembly and a wireless charging assembly. The power connection assembly is located on the outside of the downtube of the frame. The wireless charging assembly is installed in a mounting hole on the downtube of the frame. One end of the wireless charging assembly extends to the outside of the downtube of the frame and is flush with its upper surface. The other end of the wireless charging assembly is magnetically attached to the power connection assembly. The other end of the wireless charging assembly is located inside the downtube of the frame and is connected to a battery installed inside the downtube of the frame. One end of the power connection assembly is connected to an external power supply device.

2. The wireless charging device for electric-assisted bicycles according to claim 1, characterized in that, The bottom of the frame lower tube has a locking hole that communicates with the mounting hole. The locking hole cooperates with the mounting hole to complete the installation and fixation of the wireless charging component.

3. The wireless charging device for electric-assisted bicycles according to claim 2, characterized in that, The wireless charging assembly includes a mounting base, a locking block, a locking screw, a receiving end, a receiving coil, and a battery connector. The mounting base is installed in a mounting hole. A locking block is fixed to the bottom of the mounting base. The locking block is connected to a locking screw that passes through the locking hole from the bottom of the frame tube. A receiving end is installed on the top of the mounting base. A receiving coil that mates with a power connection assembly is installed on the top of the receiving end. A battery connector that connects to the battery is installed on the bottom of the receiving end. A magnetic core that is magnetically attracted to the power connection assembly is laid on the bottom of the receiving coil.

4. The wireless charging device for electric-assisted bicycles according to claim 3, characterized in that, The power connection assembly includes a control box, a power cord, a power plug, a transmitter charging panel, and a charger magnetic surface. Power cords are installed at both ends of the control box. One power cord is fixedly connected to the power plug, and the other power cord is connected to the transmitter charging panel. A charging magnetic surface that is magnetically attracted to the receiver is provided on one side of the transmitter charging panel.

5. The wireless charging device for electric-assisted bicycles according to claim 4, characterized in that, The transmitter charging panel integrates a transmitter coil, a magnetic shielding layer, a control circuit, and a temperature sensor. The transmitter coil is wound with multi-strand Litz wire, and the magnetic shielding layer is used to prevent magnetic field leakage. The magnetic shielding layer has a built-in positioning magnet that is magnetically attracted to the magnetic core.

6. The wireless charging device for electric-assisted bicycles according to claim 4, characterized in that, The control box integrates a control module and a battery management unit.

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