Smart glasses, wireless earphones and charging system

Abstract

The application discloses a kind of intelligent glasses, wireless earphone and charging system, belong to communication technical field.The intelligent glasses include glasses body and glasses circuit, the glasses body includes temple;The glasses circuit is arranged on at least one temple, the glasses circuit includes discharge circuit and the charging coil connected with the discharge circuit;Wherein, the discharge circuit exports current to the charging coil and carries out wireless charging to external device;When the intelligent glasses are in human ear wearing state, the magnetic induction line generated by the charging coil is towards the direction of auricle.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to smart glasses, wireless headphones, and a charging system. Background Technology

[0002] With the continuous development of smart wearable technology, electronic devices such as smart glasses and wireless headphones are emerging in large numbers. Smart glasses can communicate via technologies such as Bluetooth and Wi-Fi, and wireless headphones can also use Bluetooth to transmit data between electronic devices. Both smart glasses and wireless headphones contain batteries to power their normal operation. When the batteries are depleted, they need to be removed and charged promptly.

[0003] Wireless earbuds are inherently small, and inserting batteries into them would take up a significant amount of space. Furthermore, wireless earbuds generally have short battery life; increasing battery capacity would require a larger earbud cavity, which would noticeably impact sound quality. Summary of the Invention

[0004] The purpose of this application is to provide a smart glasses, wireless headphones, and a charging system that can solve the problems existing in the charging of existing wireless headphones.

[0005] In a first aspect, embodiments of this application provide smart glasses, including a glasses body and glasses circuitry.

[0006] The glasses body includes temples;

[0007] The eyeglasses circuit is disposed on at least one temple, and the eyeglasses circuit includes a discharge circuit and a charging coil connected to the discharge circuit.

[0008] The discharge circuit outputs current to the charging coil to wirelessly charge external devices; when the smart glasses are worn on the ear, the magnetic field lines generated by the charging coil are directed towards the auricle.

[0009] Secondly, embodiments of this application provide a wireless earphone, including an earphone body and an earphone circuit.

[0010] The earphone body includes an earphone head and an earphone handle;

[0011] The earphone circuit is disposed on the earphone body, and the earphone circuit includes a charging circuit and a charging coil connected to the charging circuit. The charging coil is wound along the length direction of the earphone handle.

[0012] Thirdly, embodiments of this application provide a charging system, including the smart glasses described in the first aspect and the wireless earphones described in the second aspect.

[0013] When the smart glasses and the wireless earphones are worn by a person, the discharge circuit of the smart glasses outputs a first current to the first charging coil of the smart glasses to generate magnetic field lines toward the auricle.

[0014] The wireless earphones are wirelessly charged under the action of the second charging coil.

[0015] In this embodiment, by placing a discharge circuit and a charging coil connected to the discharge circuit on at least one temple, and the discharge circuit outputs current to the charging coil to wirelessly charge an external device; when the smart glasses are worn on the ear, the magnetic field lines generated by the charging coil are directed towards the auricle. Therefore, the magnetic field lines generated by the charging coil towards the auricle when the smart glasses are worn can efficiently wirelessly charge the external device by utilizing the positional relationship between the smart glasses and the external device worn on the ear. This allows the external device to operate continuously while the smart glasses' battery is charged, significantly improving the battery life of the external device and enhancing the user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the smart glasses according to an embodiment of this application.

[0017] Figure 2 This is a circuit diagram of the discharge circuit of the smart glasses according to an embodiment of this application.

[0018] Figure 3 This is a circuit diagram of the smart glasses according to an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the structure of the wireless earphone according to the first embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the charging system according to an embodiment of this application.

[0021] Figure 6 This is a circuit diagram of the charging circuit of the wireless earphone according to an embodiment of this application.

[0022] Figure 7 This is a circuit diagram of a wireless earphone according to an embodiment of this application.

[0023] Figure 8 This is a schematic diagram of the structure of the wireless earphone according to the second embodiment of this application.

[0024] Figure 9 This is a schematic diagram of the charging coil of the wireless earphone according to the second embodiment of this application.

[0025] Figure 10This is the antenna radiation pattern of the charging coil of the wireless earphone according to the second embodiment of this application.

[0026] Figure 11 This is a schematic diagram of the structure of the wireless earphone according to the third embodiment of this application.

[0027] Figure 12 This is a circuit diagram of a wireless earphone according to the third embodiment of this application.

[0028] Figure 13a This is the antenna radiation pattern of the upper charging coil of the wireless earphone according to the third embodiment of this application.

[0029] Figure 13b This is the antenna radiation pattern of the lower charging coil of the wireless earphone according to the third embodiment of this application.

[0030] Figure 13c This is the antenna radiation pattern of the dual charging coils of the wireless earphone according to the third embodiment of this application. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0032] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] The smart glasses, wireless headphones, and charging system provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0034] In one embodiment of this application, a smart glasses is provided. The smart glasses include a glasses body and a glasses circuit. The glasses body includes temples. The glasses circuit is disposed on at least one temple and includes a discharge circuit and a charging coil connected to the discharge circuit. The discharge circuit outputs current to the charging coil to wirelessly charge an external device. When the smart glasses are worn on the ear, the magnetic field lines generated by the charging coil are directed toward the auricle.

[0035] The following is for reference. Figure 1 , Figure 1 This is a schematic diagram of the structure of the smart glasses according to an embodiment of this application.

[0036] like Figure 1 As shown, the smart glasses 100 includes a glasses body and a circuit disposed in the glasses body to realize various functions of the smart glasses. In this embodiment, the description mainly focuses on the glasses circuit and the corresponding charging coil 12 / 22 involved in charging and discharging of the smart glasses, as well as the glasses body in which the above-mentioned circuit and coil are disposed.

[0037] The eyeglasses themselves include components such as temples, frames, bridge, and hinges, for example... Figure 1 As shown, the temples include a left temple 10 and a right temple 20. In this embodiment, the eyeglass circuit, including a discharge circuit and a corresponding charging coil, can be located on either temple.

[0038] exist Figure 1 In this embodiment, the left temple 10 is provided with an eyeglass circuit including a charging coil 12 and a discharging circuit 140, and the right temple 20 is provided with an eyeglass circuit including a charging coil 22 and a discharging circuit 240. The structure and working principle of the charging coil and eyeglass circuit provided in the different temples are the same. The following describes... Figure 1 Taking the left temple 10 shown as an example, the structure of the eyeglass circuit 120, which includes a charging coil 12 and a discharging circuit 140, will be described in detail.

[0039] Optionally, the charging coil is disposed at one end of the temple of the frame away from the eyeglass body.

[0040] like Figure 1 As shown, the temple 10 includes a temple back 13, a temple bottom 16, and a temple side 18. These surfaces constitute a three-dimensional space. The charging coil 12 can be adapted to the shape of the temple and is conformally arranged in the three-dimensional space corresponding to the temple area.

[0041] The denser the charging coils, the more turns the coils have, and the larger the coil area, the higher the charging efficiency.

[0042] Optionally, the charging coil is a planar spiral coil, a cylindrical spiral coil, or a conical spiral coil.

[0043] When the smart glasses are worn, the charging coil 12 can generate magnetic field lines toward the auricle. Therefore, by utilizing the positional relationship between the smart glasses and external devices worn on the ear, such as wireless headphones or hearing aids, the smart glasses can wirelessly charge the external devices equipped with the charging coil.

[0044] By appropriately setting the number of turns and area of ​​the charging coil, the magnetic flux generated by the charging coil can be increased, thereby improving the charging efficiency of smart glasses for external devices.

[0045] Optionally, one end of the discharge circuit is connected to the battery of the smart glasses, and the other end is connected to the charging coil.

[0046] like Figure 2 As shown, the glasses circuit 14 includes a discharge circuit 140, which is connected to the charging cable 12 and also to the smart glasses' battery (not shown in the figure). The following is in conjunction with... Figure 2 The working principle of charging and discharging between the discharge circuit 140, the charging coil 12, and the smart glasses battery is explained.

[0047] An external charging device, such as a wired or wireless charger, charges the smart glasses' battery through charging path 144. Discharging circuit 140 discharges the smart glasses' battery to charging coil 12 through discharging path 142, generating magnetic field lines. Charging path 144 and discharging path 142 are switched via switch 146 to achieve the corresponding charging and discharging modes for the smart glasses' battery. One end of charging coil 12 is connected to switch 146, and the other end is connected to the ground terminal of discharging circuit 140 through return path 148. When switch 146 is switched to discharging path 142, discharging circuit 140 generates a discharge current through the smart glasses' battery, which is input to one end of charging coil 12 through discharging path 142 and then returns to the ground terminal of discharging circuit 140 through return path 148, thus forming a closed discharging circuit.

[0048] The discharge circuit allows the stored charge in the smart glasses' battery to be input into the charging coil as a discharge current, thereby generating corresponding magnetic field lines. The direction of the magnetic field lines is related to the coil surface of the charging coil. For planar spiral coils, cylindrical spiral coils, or conical spiral coils, the direction of the magnetic field lines generated by the charging coil is perpendicular to its corresponding coil surface.

[0049] The eyeglass circuit 14 can be placed in the three-dimensional space of the temple, or, in order to avoid occupying the area of ​​the charging coil, the eyeglass circuit 14 can be placed in other suitable positions on the eyeglass body.

[0050] To increase the area of ​​the charging coil 12, the charging coil 12 can be conformally designed on the surface of the temple, and laser direct forming (LDS) technology can be used to maximize the use of the frame space.

[0051] In the above embodiments, when the smart glasses are worn on the ear, the charging coil can generate magnetic field lines along the direction perpendicular to the coil surface, pointing towards the auricle. This allows for the charging of external devices also worn on the ear and equipped with charging coils. By placing the charging coil on the temple of the smart glasses near the ear, the positional relationship between the smart glasses and the external device worn on the ear enables highly efficient wireless charging of the external device. This allows the external device to operate continuously while the smart glasses' battery is charged, significantly improving its battery life and enhancing the user experience.

[0052] Optionally, in this embodiment, the smart glasses further include: a power supply circuit for transmitting radio frequency signals; a high-pass device disposed between the power supply circuit and the charging coil for transmitting high-frequency signals of a preset frequency band in the radio frequency signals to the charging coil, thereby multiplexing the charging coil as an antenna for transmitting the high-frequency signals; and a low-pass device disposed between the discharge circuit and the charging coil for transmitting the current output by the discharge circuit to the charging coil.

[0053] like Figure 3 As shown, in Figure 2 Based on the discharge circuit 140 of the smart glasses, low-pass devices 147 and 149 are added in series. Low-pass device 147 is disposed between the switch 146 and one end of the charging coil 12, and low-pass device 149 is disposed between the other end of the charging coil 12 corresponding to the return path 148. In addition, a power supply circuit and a high-pass device 145 are also provided. The power supply circuit includes a power supply module 141 and an antenna matching module 143.

[0054] By appropriately setting the electrical length of the charging coil 12, the power supply circuit can tune the charging coil to a predetermined communication frequency band, such as the high-frequency signal band of Bluetooth or WIFI, to serve as an antenna for transmitting signals in that predetermined frequency band. The Qualcomm device 145 ensures that communication signals in the high-frequency signal band can pass through while blocking the current charging the charging coil 12.

[0055] In this embodiment, the charging coil 12 is reused as an antenna to receive external signals. These signals are then processed by the high-pass device 145, antenna matching module 143, and power supply module 141 to receive signals in a predetermined frequency band. This data is then provided to the signal processing circuit inside the smart glasses, enabling communication data transmission between other devices and the smart glasses. Alternatively, signals in a predetermined frequency band emitted by the internal circuitry of the smart glasses are processed by the power supply module 141, antenna matching module 143, and high-pass device 145 before being transmitted to the charging coil 12. This reuses the charging coil 12 as an antenna to transmit the signal to the corresponding external signal receiving device.

[0056] Therefore, by reusing the charging coil of the smart glasses, it is possible to charge external devices while simultaneously using it as an antenna for communication data transmission on a preset frequency band.

[0057] A denser charging coil with more turns generally results in higher charging efficiency; however, for an antenna, more turns increase the current path, leading to increased losses and reduced antenna efficiency. Conversely, a denser coil with fewer turns also reduces efficiency. Therefore, by adjusting the density of the charging coil's spiral in smart glasses, a trade-off can be struck between antenna performance and charging efficiency.

[0058] When the charging coil of smart glasses is a planar spiral coil, the corresponding antenna can be understood as a planar spiral antenna, whose radiation pattern is perpendicular to the coil plane of the planar spiral coil and radiates vertically.

[0059] When the charging coil of smart glasses is a cylindrical spiral coil, the corresponding antenna can be understood as a cylindrical spiral antenna. Its radiation pattern can be controlled by adjusting the diameter and pitch of the spiral, allowing it to radiate in any direction. Given a fixed cylindrical spiral antenna structure, its radiation pattern remains constant. To ensure the communication quality of the smart glasses, the spiral diameter and radius are adjusted so that the radiation pattern is axial, i.e., parallel to the axis of the spiral, radiating vertically. At this point, the communication quality of the smart glasses is optimal.

[0060] In this embodiment, by placing a discharge circuit and a charging coil connected to the discharge circuit on at least one temple, and the discharge circuit outputs current to the charging coil to wirelessly charge an external device; when the smart glasses are worn on the ear, the magnetic field lines generated by the charging coil are directed towards the auricle. Therefore, the magnetic field lines generated by the charging coil towards the auricle when the smart glasses are worn can efficiently wirelessly charge the external device by utilizing the positional relationship between the smart glasses and the external device worn on the ear. This allows the external device to operate continuously while the smart glasses' battery is charged, significantly improving the battery life of the external device and enhancing the user experience.

[0061] In another embodiment of this application, a wireless earphone is also provided, including an earphone body and an earphone circuit. The earphone body includes an earphone head and an earphone handle. The earphone circuit is disposed on the earphone body and includes a charging circuit and a charging coil connected to the charging circuit. The charging coil is wound along the length direction of the earphone handle.

[0062] The wireless earphone charging coil is wound along the length of the earphone handle. The coil surface corresponding to the charging coil can generate current by receiving magnetic field lines and output it to the charging circuit of the wireless earphone.

[0063] The wireless earphones mentioned here can be external devices that are wirelessly charged via the smart glasses 100 described in the above embodiment.

[0064] In one embodiment of this application, a charging system is also provided, including the one described above. Figures 1 to 3 The smart glasses described in the embodiments, and the wireless earphones described in the above embodiments; when the smart glasses and the wireless earphones are worn by a person, the discharge circuit of the smart glasses outputs a first current to the first charging coil of the smart glasses to generate magnetic field lines toward the auricle; under the action of the second charging coil of the wireless earphones, the wireless earphones are wirelessly charged.

[0065] The smart glasses and wireless earphones together form a charging system. When the smart glasses are worn on the ear, the charging coil generates magnetic lines of force towards the auricle, which can wirelessly charge the charging coil of the wireless earphones when they are worn on the ear.

[0066] Figure 4 This is a schematic diagram of the structure of the wireless earphone according to the first embodiment of this application, as shown below. Figure 4 As shown, the wireless earphone 200 includes an earphone body and circuitry disposed in the earphone body to realize various functions of the wireless earphone. In this embodiment, the description mainly focuses on the charging circuit 34 and the corresponding charging coil 32 of the wireless earphone, which involve charging and discharging, as well as the earphone body in which the above-mentioned circuitry and coil are disposed.

[0067] Figure 4 The wireless earphones shown can be worn in either the right or left ear. A charging circuit 34 and a corresponding charging coil 32 can be installed in the single-ear wireless earphone, or a charging circuit 34 and a corresponding charging coil 32 can be installed in each of the two dual-ear wireless earphones.

[0068] The coil surface corresponding to the charging coil 32 of the wireless earphone 200 can generate a charging current and be used for wireless charging of the wireless earphone by receiving the charging magnetic field lines emitted by other external charging devices.

[0069] The external charging device here is, for example, the smart glasses 100 in the above embodiment. When both the wireless earphone 200 and the smart glasses 100 are in the wearing state, the charging coil of the smart glasses 100 generates magnetic field lines towards the auricle in the direction perpendicular to the coil surface. As a result, the coil surface of the charging coil wound along the length direction of the earphone handle of the wireless earphone 200 can receive a certain amount of the magnetic field lines and generate a charging current for the wireless earphone.

[0070] The charging coil of the smart glasses 100 is located on the temple and generates magnetic lines of force towards the ear. The charging coil of the wireless earphones 200 is located on the earphone handle. When both are worn, their charging coils are close to each other, thus enabling the smart glasses 100 to wirelessly charge the wireless earphones 200.

[0071] Optionally, the axis of the second charging coil corresponding to the coil surface is parallel to the direction of the magnetic field lines.

[0072] In this embodiment, the axis of the charging coil 32 of the wireless earphone 200 is parallel to the direction of the magnetic field lines of the smart glasses 100 toward the auricle. That is, the coil surface of the charging coil 32 receives the magnetic field lines of the smart glasses 100 toward the auricle perpendicularly. At this time, the magnetic flux received by the charging coil 32 is the largest, and the charging efficiency is the highest.

[0073] like Figure 5 As shown, when a person wears both smart glasses 100 and wireless earphones 200 simultaneously, the magnetic field lines 122 generated by the charging coil 12 of the smart glasses, pointing towards the auricle, are exactly perpendicular to the coil surface 322 of the charging coil of the wireless earphones. This results in the wireless earphones receiving the maximum magnetic flux and achieving the highest charging efficiency. Furthermore, at this time, the antenna radiation corresponding to the charging coil of the smart glasses is axial vertical radiation, and the antenna radiation corresponding to the charging coil of the wireless earphones is also axial vertical radiation, thus achieving optimal communication quality between the wireless earphones and the smart glasses.

[0074] like Figure 4 As shown, the headphone body includes a headphone head 60 and a headphone handle 80. The headphone head 60 is mainly the sound cavity area, while the headphone handle 80 usually contains circuit boards, batteries, etc.

[0075] In one embodiment of this application, optionally, the second charging coil is a cylindrical spiral coil wound along the length direction of the earphone handle, and the coil surface corresponding to the cylindrical spiral coil is perpendicular to the axis of the earphone handle.

[0076] Figure 4 The charging coil 32 shown is a cylindrical spiral coil, mainly located in the area corresponding to the earphone grip 80.

[0077] Assuming the position remains unchanged, the denser the charging coils, the more coil turns, and the larger the coil area, the higher the corresponding charging efficiency.

[0078] As mentioned above, smart glasses can wirelessly charge wireless earphones. By appropriately setting the number of turns and area of ​​the charging coil in the wireless earphones, the magnetic flux generated by the charging coil can be increased, thereby improving the charging efficiency of the wireless earphones.

[0079] Optionally, one end of the charging circuit is connected to the battery of the wireless earphone, and the other end is connected to the second charging coil.

[0080] like Figure 4 and Figure 6 As shown, the wireless earphone 200 includes a charging circuit 34, which is connected to a charging coil 32 and is also connected to the battery (not shown) of the wireless earphone 200.

[0081] The following is combined with Figure 6 The charging and discharging working principle between the charging circuit 34, the charging coil 32, and the wireless earphone battery is explained.

[0082] The coil surface corresponding to the charging coil 32 receives the magnetic field lines generated by the charging coil of the smart glasses 100, thereby generating a charging current that charges the battery of the wireless earphone 200 through the charging path 344 and the return path 348. The first end of the charging circuit 34 is connected to the battery of the wireless earphone 200. One end of the charging coil 32 is connected to the positive terminal of the battery of the wireless earphone 200 through the charging path 344. The second end of the charging circuit 34 is connected to the other end of the charging coil 32 through the return path 348. The second end of the charging circuit 34 is grounded and connected to the negative terminal of the battery of the wireless earphone 200. Through the circuit formed by the charging circuit 34, the charging coil 32, and the battery, a charging current is generated through the charging coil 32 to charge the battery of the wireless earphone.

[0083] The charging circuit 34 can also be located on the earphone stem, such as... Figure 4 As shown.

[0084] To further improve the efficiency of wireless charging for wireless earbuds, the charging coil is designed to have a larger winding area by utilizing the space in the earbud head.

[0085] In another embodiment, optionally, the second charging coil is a conical spiral coil extending along the length of the earphone handle to the earphone head and wound around it. The vertex of the conical spiral coil and the charging circuit are located at the end of the earphone handle away from the earphone head. The bottom surface of the conical spiral coil is located at the end of the earphone head away from the earphone handle. The coil surface of the conical spiral coil corresponding to the coil portion wound around the earphone handle is perpendicular to the axis of the earphone handle. The coil surface of the conical spiral coil corresponding to the coil portion wound around the earphone head is perpendicular to the axis of the earphone head.

[0086] refer to Figure 8 , Figure 8 This is a schematic diagram of the structure of a wireless earphone according to the second embodiment of this application. As shown in the figure, the charging coil of the wireless earphone is a conical spiral coil 32', wherein the vertex of the conical spiral coil 32' and the charging circuit 34' connected to the conical spiral coil 32' are respectively... Figure 6 The charging circuit 34 is located at the end of the earphone handle 80 away from the earphone head 60, that is, at the lower part of the earphone handle. The bottom surface of the conical spiral coil 32' is located at the end of the earphone head 60 away from the earphone handle 80, that is, at the upper part of the earphone head.

[0087] Thus, by utilizing the large space in the earphone head, a conical spiral charging coil can be wound, increasing the winding area of ​​the charging coil corresponding to the earphone head. According to Faraday's law of electromagnetic induction, the induced electromotive force is directly proportional to the area of ​​the coil. Therefore, by designing a conical spiral coil and placing the coil at the apex of the spiral in the earphone head, the area of ​​the charging coil can be increased, improving its charging capacity and thus enhancing the charging efficiency of the wireless earphones.

[0088] In another embodiment, optionally, the second charging coil includes a first conical spiral coil and a second conical spiral coil extending along the length of the earphone handle to the earphone head and wound around it. The first and second conical spiral coils have opposite coil orientations and the same coil rotation direction. A first end of the first conical spiral coil is connected to the charging circuit, and a second end of the first and second conical spiral coils are connected in series. A second end of the second conical spiral coil is connected to the charging circuit. The apex of the first and second conical spiral coils and the charging circuit are disposed at the end of the earphone handle near the earphone head. The bottom surface of the first conical spiral coil is disposed at the end of the earphone head away from the earphone handle, and the bottom surface of the second conical spiral coil is disposed at the end of the earphone handle away from the earphone head. The first conical spiral coil is wound around the earphone head and the corresponding coil surface is perpendicular to the axis of the earphone head, and the second conical spiral coil is wound around the earphone handle and the corresponding coil surface is perpendicular to the axis of the earphone handle.

[0089] refer to Figure 11 , Figure 11 This is a schematic diagram of the structure of a wireless earphone according to the third embodiment of this application. As shown in the figure, the charging coil includes two conical spiral coils, namely an upper coil 321' and a lower coil 323', the upper coil 321' and the lower coil 323' have opposite coil orientations and the coil winding directions are the same.

[0090] refer to Figure 12 The figure illustrates the circuit structure corresponding to the charging coil in this embodiment. Figure 12 As shown, the upper coil 321' and the lower coil 323' are connected in series. One end of the upper coil 321' is connected to one end of the charging circuit 34", and one end of the lower coil 323' is connected to the other end of the charging circuit 34".

[0091] like Figure 11 As shown, the vertex corresponding to the upper coil 321', the vertex corresponding to the lower coil 323', and the charging circuit 34' are located at the end of the earphone handle 80 near the earphone head 60, i.e., the lower part of the earphone head or the upper part of the earphone tail. The starting points of both the upper and lower coils are located in the middle of the earphone body and are connected to the rear circuit. The bottom surface corresponding to the upper coil 321' is located at the end of the earphone head 60 away from the earphone handle 80, i.e., the upper part of the earphone head 60. The bottom surface corresponding to the lower coil 323' is located at the end of the earphone handle 80 away from the earphone head 60, i.e., the lower part of the earphone handle.

[0092] By incorporating conical spiral coils in both the earphone head and the earphone stem, the area of ​​the charging coil can be further increased, improving its charging capacity and thus enhancing the charging efficiency of the wireless earphones.

[0093] In the above embodiments, the wireless earphones can be charged by utilizing the coil surface of the charging coil and the magnetic field lines generated by the discharge of the smart glasses when the earphones are worn. By placing the charging coil on the wireless earphones, the corresponding positional relationship between the smart glasses and the wireless earphones when worn allows for highly efficient wireless charging. This ensures that the wireless earphones can operate continuously while the smart glasses' battery is charged, significantly improving battery life and enhancing the user experience.

[0094] Optionally, in this embodiment, the wireless earphone further includes: a first power supply circuit for transmitting radio frequency signals; a first high-pass device disposed between the first power supply circuit and the second charging coil for transmitting high-frequency signals of a preset frequency band in the radio frequency signals to the second charging coil, thereby multiplexing the second charging coil as an antenna for transmitting the high-frequency signals; and a low-pass device disposed between the charging circuit and the second charging coil for transmitting the current output by the charging circuit to the battery of the wireless earphone.

[0095] like Figure 7 As shown, in Figure 6 Based on the charging circuit of the wireless earphone, low-pass devices 347 and 349 are added in series. Low-pass device 347 is positioned between one end of the charging circuit 34 and the charging coil 32, and low-pass device 349 is positioned between the other end of the charging circuit 34 and the charging coil 32. Furthermore, a feed circuit and a high-pass device 345 are connected in parallel with the charging circuit 34. The feed circuit includes a feed module 341 and an antenna matching module 343. By appropriately setting the electrical length of the charging coil 32, the feed circuit can tune the charging coil 32 to a predetermined communication frequency band, such as the high-frequency signal band of Bluetooth or Wi-Fi, to serve as an antenna for transmitting signals in that predetermined frequency band. The high-pass device 345 ensures that communication signals in the high-frequency signal band can pass through while blocking the current supplying the charging coil 32.

[0096] The power supply module 341 receives communication signals from various frequency bands. Through the antenna matching module 343 and the high-pass device 345, it filters out the signal corresponding to the predetermined frequency band of the charging coil 32 and provides it to the charging coil 32 for transmission to the signal processing circuit inside the wireless earphone, enabling communication data transmission between other devices and the wireless earphone. Alternatively, the antenna signal output by the wireless earphone is transmitted to the corresponding antenna signal receiving device via the charging coil 32, the high-pass device 345, the antenna matching module 343, and the power supply module 341.

[0097] Therefore, by reusing the charging coil of the wireless earphone, it can simultaneously function as the charging coil and the antenna of the wireless earphone for communication data transmission in a preset frequency band.

[0098] Similarly, the denser the charging coil and the more turns it has, the higher the charging efficiency; however, for the antenna, more turns increase the current path, thus increasing losses and reducing antenna efficiency. The reverse is also true. Therefore, by adjusting the density of the charging coil's spiral in wireless earphones, a trade-off can be struck between antenna performance and charging efficiency.

[0099] When the charging coil of a wireless headset is a cylindrical spiral coil, the corresponding antenna can be understood as a cylindrical spiral antenna. Its radiation pattern can be controlled by adjusting the diameter and pitch of the spiral, allowing it to radiate in any direction. Given a fixed cylindrical spiral antenna structure, its radiation pattern remains constant. To ensure the communication quality of the wireless headset, the diameter and radius of the cylindrical spiral antenna are adjusted so that its radiation pattern is axial, i.e., parallel to the axis of the spiral, radiating vertically. At this point, the communication quality of the smart glasses is optimal.

[0100] When the charging coil of a wireless earphone is a conical spiral coil, the corresponding antenna can be understood as a conical spiral antenna. A conical spiral antenna has the characteristic of converging antenna pattern beams, causing the antenna pattern to radiate along the spiral axis. Furthermore, by controlling the spiral pitch S, its radiation pattern can be adjusted to exhibit wide-beam characteristics. The antenna pattern of a conical spiral antenna is shown in the reference diagram. Figure 10 Due to the non-frequency-variable characteristics of the conical spiral antenna, its operating frequency can exceed three harmonics, exhibiting ultra-wideband characteristics. Therefore, this design can be widely used in the millimeter-wave band.

[0101] In this embodiment, the end of the conical spiral coil is a closed curve. To further adjust the antenna performance and ensure that the non-frequency-dependent characteristics of the spiral are not compromised, an inductive or resistive load can be applied to the conical spiral coil, for example... Figure 8 The loading circuit 36 ​​is used to achieve the stable non-frequency-varying characteristics of the traditional antenna.

[0102] The structure of the conical spiral coil in this embodiment can be referred to... Figure 9 Specifically, the curve of the conical spiral coil can be expressed by the parametric equation of t in the following form:

[0103] Screw diameter: D(t)=k1*t

[0104] Height: H(t) = k2 * t * e αt

[0105] Where t is the parameter variable, which can be defined as the number of spiral turns in actual use, and t takes the value (0, +∞).

[0106] k1 and k2 are constants that determine the growth rate of the spiral; α is a constant, and by setting this parameter, the spiral height can be made to grow linearly or exponentially.

[0107] From the above equation, it can be seen that the diameter of the conical spiral coil varies uniformly. When the parameter α is not equal to 0, Figure 9 The helix height (H) of a conical helical coil varies non-uniformly, meaning the pitch (S) also changes with the parameter. When parameter α equals 0, the helix height (H) varies uniformly, and the pitch (S) is fixed. By controlling parameter α, the sparseness of the conical helical coil can be adjusted.

[0108] In this conical structure, the denser the coil and the more turns, the higher the charging efficiency; however, for the antenna, more turns increase the current path, thus increasing losses and reducing antenna efficiency. Conversely, fewer turns also lead to lower efficiency. Therefore, by adjusting the sparseness of the spiral, a trade-off can be struck between antenna performance and charging efficiency.

[0109] In this embodiment, by changing the structure of the wireless earphone charging coil and utilizing the unique structure of the earphone, the charging coil is designed in a conical shape, which improves the charging efficiency of the wireless earphone. At the same time, it can improve the radiation pattern characteristics of the earphone and design it as a wide-beam antenna to improve communication quality.

[0110] When the charging coil of the wireless earphone includes two conical spiral coils, optionally, the first high-pass device is disposed between the first feeding circuit and the first end of the first conical spiral coil, for transmitting a high-frequency signal of the preset frequency band, thereby multiplexing the first conical spiral coil as a first antenna for transmitting the high-frequency signal; the wireless earphone further includes a second feeding circuit for transmitting radio frequency signals; and a second high-pass device is disposed between the second feeding circuit and the second end of the second conical spiral coil, for transmitting a high-frequency signal of the same frequency band as the preset frequency band to the second conical spiral coil, thereby multiplexing the second conical spiral coil as a second antenna for transmitting the high-frequency signal.

[0111] like Figure 12 As shown, in Figure 7 Based on the charging circuit of the wireless earphone, the charging coil is replaced with two conical spiral coils, namely the upper coil 321' and the lower coil 323'. In addition, two communication circuits are connected to the upper coil 321' and the lower coil 323' respectively. The first communication circuit includes a power supply module 341, an antenna matching module 343, and a high-pass device 345, and the second communication circuit includes a power supply module 342, an antenna matching module 343', and a high-pass device 345'.

[0112] Feeding modules 341 and 342 receive communication signals of various frequency bands respectively. Through the corresponding antenna matching modules 343, 343' and high-pass circuits 345, 345', the signals of the predetermined frequency bands corresponding to the upper coil 321' and the lower coil 323' are filtered out respectively, and the upper coil 321' and the lower coil 323' share the same frequency.

[0113] Similarly, to further adjust the antenna performance and ensure that the non-frequency-dependent characteristics of the spiral are not compromised, inductive or resistive loading can be applied to the upper coil 321' and the lower coil 323', for example... Figure 12 The loading circuits 361 / 363, after loading resistors or inductors onto the upper coil 321' and lower coil 323', are connected by a pull wire from the middle to achieve the stable non-frequency-changing characteristics of a traditional antenna.

[0114] In this embodiment, the upper coil 321' and the lower coil 323' can be fed by the power supply module 341 and the power supply module 342, respectively. At this time, there are three power supply methods:

[0115] 1. With only the power supply module 341 powered, the antenna is essentially only operating with the upper coil 321'. The antenna's radiation pattern is as follows. Figure 13a ;

[0116] 2. With only the power supply module 342 powered, the antenna is essentially only operating with the lower coil 323'. The antenna's radiation pattern is as follows. Figure 13b ;

[0117] 3. Feed modules 341 and 342 are fed simultaneously with the same current but opposite phase. At this time, the antenna is equivalent to the upper coil 321' and lower coil 323' operating simultaneously, and the antenna configuration is similar to a dipole antenna. The antenna's radiation pattern is shown below. Figure 13c .

[0118] Based on the above power supply method, the wireless headphones can be reconfigured and adjusted during use to achieve full space coverage, greatly improving the antenna communication capability of the wireless headphones.

[0119] In this embodiment, the charging system includes smart glasses and wireless earphones. When the smart glasses are worn, the magnetic field lines generated by their charging coil face towards the auricle. The wireless earphones include a charging coil wound along the length of the earphone stem. This allows the smart glasses to charge the wireless earphones by utilizing the positional relationship between the smart glasses and the wireless earphones while they are worn. Thus, as long as the smart glasses' battery has power, the wireless earphones can operate continuously, significantly improving their battery life and enhancing the user experience.

[0120] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A wireless earphone, characterized in that, Includes the earphone body, earphone circuitry, a first power supply circuit, and a first high-pass device. The earphone body includes an earphone head and an earphone handle; The earphone circuit is disposed on the earphone body, and the earphone circuit includes a charging circuit and a second charging coil connected to the charging circuit. The second charging coil is wound along the length direction of the earphone handle. The first power supply circuit is used to transmit radio frequency signals; A first high-pass device is disposed between the first power supply circuit and the second charging coil; The second charging coil includes a first conical spiral coil and a second conical spiral coil that extend along the length of the earphone handle to the head of the earphone and are wound around it. The first conical spiral coil and the second conical spiral coil have opposite coil orientations and the same coil rotation direction. An inductor or resistor is connected to each of the first conical spiral coil and the second conical spiral coil. The first end of the first conical spiral coil is connected to the charging circuit, the second end of the first conical spiral coil is connected in series with the first end of the second conical spiral coil, and the second end of the second conical spiral coil is connected to the charging circuit. The vertex corresponding to the first conical spiral coil, the vertex corresponding to the second conical spiral coil, and the charging circuit are disposed at the end of the earphone handle near the head of the earphone. The bottom surface corresponding to the first conical spiral coil is disposed at the end of the head of the earphone away from the earphone handle, and the bottom surface corresponding to the second conical spiral coil is disposed at the end of the earphone handle away from the head of the earphone. The first conical spiral coil is wound around the head of the earphone and the corresponding coil surface is perpendicular to the axis of the head of the earphone; the second conical spiral coil is wound around the earphone handle and the corresponding coil surface is perpendicular to the axis of the earphone handle. The first high-pass device is disposed between the first feed circuit and the first end of the first conical spiral coil, and is used to transmit high-frequency signals of a preset frequency band to the first conical spiral coil, so as to reuse the first conical spiral coil as the first antenna for transmitting the high-frequency signals; The wireless earphone also includes: a second power supply circuit for transmitting radio frequency signals; A second high-pass device is disposed between the second feed circuit and the second end of the second conical spiral coil, for transmitting a high-frequency signal of the same frequency band as the preset frequency band to the second conical spiral coil, so as to reuse the second conical spiral coil as a second antenna for transmitting the high-frequency signal; The second charging coil serves as both the charging coil for the wireless earphones and the antenna for transmitting communication data in the preset frequency band.

2. A type of smart glasses, characterized in that, The smart glasses are used to charge the wireless earphones of claim 1, and include a glasses body and glasses circuitry. The glasses body includes temples; The eyeglasses circuit is disposed on at least one temple, and the eyeglasses circuit includes a discharge circuit and a charging coil connected to the discharge circuit. The discharge circuit outputs current to the charging coil to wirelessly charge external devices; when the smart glasses are worn on the ear, the magnetic field lines generated by the charging coil are directed towards the auricle.

3. The smart glasses according to claim 2, characterized in that, The charging coil is located at one end of the temple of the frame away from the main body of the glasses.

4. The smart glasses according to claim 3, characterized in that, One end of the discharge circuit is connected to the battery of the smart glasses, and the other end is connected to the charging coil.

5. The smart glasses according to claim 4, characterized in that, Also includes: The power supply circuit is used to transmit radio frequency signals; A high-pass device is disposed between the power supply circuit and the charging coil, and is used to transmit high-frequency signals of a preset frequency band in the radio frequency signal to the charging coil, so as to reuse the charging coil as an antenna for transmitting the high-frequency signal; A low-pass device is disposed between the discharge circuit and the charging coil for transmitting the current output by the discharge circuit to the charging coil.

6. A charging system, characterized in that, Including the smart glasses according to any one of claims 2 to 5, and the wireless earphones according to claim 1, When the smart glasses and the wireless earphones are worn by a person, the discharge circuit of the smart glasses outputs a first current to the first charging coil of the smart glasses to generate magnetic field lines toward the auricle. The wireless earphones are wirelessly charged under the action of the second charging coil.

7. The charging system according to claim 6, characterized in that, The axis of the second charging coil corresponding to the coil surface is parallel to the direction of the magnetic field lines.

8. The charging system according to claim 6, characterized in that, One end of the charging circuit is connected to the battery of the wireless earphone, and the other end is connected to the second charging coil.

9. The charging system according to claim 8, characterized in that, A low-pass device is disposed between the charging circuit and the second charging coil for transmitting the current output by the charging circuit to the battery of the wireless earphone.

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