Self-charging intelligent eardrop device
By utilizing electromagnetic induction and piezoelectric film technology in the self-charging module, combined with rectifier circuitry and wireless charging, the problem of insufficient battery life in smart earrings has been solved, achieving efficient energy storage and wearer information monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TRULY OPTO ELECTRONICS
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-17
AI Technical Summary
The small size of smart earrings means that they cannot accommodate a large-capacity battery, resulting in weak battery life that cannot meet daily usage needs.
It adopts a self-charging module, combining electromagnetic induction and piezoelectric film technology. Current is generated by the relative motion between the induction coil and the permanent magnet, and the piezoelectric film generates charge during the shaking process. Combined with rectifier circuit and battery module, the power is stored. A wireless charging module can also be selected for efficient charging.
It enables automatic charging of electrical energy, improves charging efficiency by more than 30%, effectively meets the daily power needs of the earrings, and monitors the wearer's basic information through multiple sensors.
Smart Images

Figure CN224138740U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of smart wearable devices, and in particular to a self-charging smart earring device. Background Technology
[0002] The global wearable market is booming faster than expected, with many companies incorporating smart wearable devices into their core business, placing them second only to smartphones and tablets. Small and medium-sized enterprises are also gradually gaining momentum.
[0003] Wearable devices are constantly being updated and their innovation capabilities are constantly being strengthened. The types of wearable devices range from smartwatches and smart glasses to smart rings. Wearing them is becoming more seamless, and the requirements for battery life are gradually increasing.
[0004] However, due to the small size of smart earrings, a large-capacity battery cannot be placed inside, resulting in weak battery life and insufficient power to meet the daily needs of smart earring users. Utility Model Content
[0005] In order to solve the problems existing in the prior art, this utility model provides a self-charging smart earring device.
[0006] This utility model provides a self-charging smart earring device with the following technical solution: an earring shell; a self-charging module installed inside the earring shell, including a permanent magnet, an induction coil, and a piezoelectric film, wherein the induction coil is movably connected to the earring shell, the permanent magnet is fixed to the shell of the earring shell, and the magnetic field lines of the permanent magnet pass through the induction coil; the induction coil is wound with multiple turns, the multiple turns of the induction coil are separated by the piezoelectric film, and the multiple turns of the induction coil are in contact with the piezoelectric film, the piezoelectric film is used to generate current by squeezing during the shaking and collision of the multiple turns of the induction coil; and a battery module connected to the self-charging module for receiving the current on the induction coil to generate electricity.
[0007] Optionally, the self-charging module further includes: a rectifier circuit connected to the induction coil and the battery module, used to convert the alternating current on the induction coil into direct current; the battery module is used to store the direct current to form electricity.
[0008] Optionally, the number of turns of the induction coil is in the range of 10 to 20 turns.
[0009] Optionally, it also includes: a wireless charging module installed inside the earring shell, including a receiving coil, an AC / DC converter, and a charging case. The receiving coil is used to receive high-frequency AC power transmitted by a high-frequency transmitting coil in the charging case, and the AC / DC converter is used to convert the high-frequency AC power into DC power. The AC / DC converter is connected to the battery module, and the battery module is used to store DC power to form electricity.
[0010] Optionally, the charging case further includes: a charging box body, including a charging base, a charging cover, and an earring placement hole; a charging circuit, connected to the high-frequency transmitting coil, for supplying high-frequency alternating current to the high-frequency transmitting coil; and a charging interface, connected to the charging circuit, for connecting to an external power source; the charging circuit, the charging interface, and the high-frequency transmitting coil are all placed inside the charging base.
[0011] Optionally, it also includes: a functional module, disposed inside the earring shell, including a sensing sensor and a processor, wherein the sensing sensor is used to acquire basic information of the wearer and transmit it to the processor, and the processor is used to receive and store the basic information.
[0012] Optionally, it may also include: an earring hook, which is connected to the earring shell and is in the shape of a hook for wearing.
[0013] Optionally, it also includes: a connecting ring, comprising a first magnetic block and a second magnetic block, wherein the first magnetic block is mounted on the earring hook and the second magnetic block is mounted on the earring shell, and the first magnetic block and the second magnetic block have opposite magnetic properties.
[0014] Optionally, it also includes: a connecting ring, including a plug and a slot, the plug being mounted on the earring hook, the slot being mounted on the earring housing, and the plug and the slot being mutually connected.
[0015] Any of the above-described technical solutions of this utility model has at least some of the following beneficial effects:
[0016] 1. Through the combined action of electromagnetic induction and piezoelectric film, two currents are generated simultaneously. The dual-mode charging efficiency is more than 30% higher than that of single electromagnetic induction, effectively realizing automatic charging of electrical energy, reducing the phenomenon of insufficient power, and effectively meeting the power needs of earring users.
[0017] 2. Setting the number of turns of the induction coil to between 10 and 20 turns effectively balances the relationship between usable space and charging efficiency;
[0018] 3. The high-frequency transmitting coil emits high-frequency alternating current, which cannot be directly stored in the battery module. Therefore, an AC-DC converter is required to convert the AC current into DC current, thus effectively realizing the storage of electrical energy.
[0019] 4. Earrings are worn devices that detect the wearer's basic information. They can be designed with earring hooks and hung in the wearer's ear canal. Wearing them frequently helps the earrings monitor the wearer's basic information in real time. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a self-charging smart earring device according to this utility model.
[0021] Figure 2 This is a schematic diagram of the self-charging module of a self-charging smart earring device according to this utility model;
[0022] Figure 3 This is a schematic diagram of the wireless charging module of a self-charging smart earring device according to this utility model.
[0023] Explanation of reference numerals in the attached diagram: 1. Earring shell; 11. Earring hook; 12. Connecting ring;
[0024] 2. Self-charging module; 21. Permanent magnet; 22. Induction coil; 23. Piezoelectric film; 24. Rectifier circuit;
[0025] 3. Battery module;
[0026] 4. Wireless charging module; 41. Receiving coil; 42. AC / DC converter; 43. Charging case; 44. Charging base; 45. Charging cover; 46. Earring placement hole; 47. Charging circuit; 48. Charging interface; 49. High-frequency transmitting coil;
[0027] 5. Functional modules. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0030] Example 1
[0031] This utility model discloses a self-charging smart earring device. (Refer to...) Figure 1 and Figure 2 ,include:
[0032] Earring shell 1; self-charging module 2, installed inside the earring shell 1, including permanent magnet 21, induction coil 22 and piezoelectric film 23, the induction coil 22 is movably connected to the earring shell 1, the permanent magnet 21 is fixed to the shell of the earring shell 1, and the magnetic field lines of the permanent magnet 21 pass through the induction coil 22; the induction coil 22 is wound with multiple turns, the multiple turns of the induction coil 22 are separated by the piezoelectric film 23, and the multiple turns of the induction coil 22 are in contact with the piezoelectric film 23, the piezoelectric film 23 is used to squeeze and generate current during the shaking and collision process of the multiple turns of the induction coil 22; battery module 3, connected to the self-charging module 2, is used to receive the current on the induction coil 22 to generate electricity.
[0033] Based on the above structure, the induction coil 22 is wound around the coil frame, which is movably set inside the earring shell 1 by means of a pendant or other means. The permanent magnet 21 always generates magnetism, that is, there are magnetic field lines. During the wearing of the earring, the earring swings due to the wearer's body movement, thereby realizing the coil frame driving the coil to swing, which in turn realizes that the induction coil 22 cuts the magnetic field lines and forms a current in the induction coil 22, effectively realizing the automatic generation of current and generating electricity to meet the daily power needs of the earring wearer.
[0034] Optionally, a piezoelectric film 23 is wound around the induction coil 22. In the tiny space of the earring, the induction coil 22 is subject to collision and compression during the shaking process. During the compression process, an electric charge is generated on the piezoelectric film 23, and the charge is conducted in the direction of the induction coil 22 to form a piezoelectric current.
[0035] The piezoelectric effect includes both positive and negative piezoelectricity. In the positive piezoelectric effect, when an external force is applied (during a collision), an electric charge is generated inside the piezoelectric film 23 (i.e., mechanical energy is converted into electrical energy). In the negative piezoelectric effect, when an electric field is applied, the piezoelectric film 23 deforms, converting electrical energy into mechanical energy, causing the entire induction coil 22 to vibrate. In the case of an earring where only a magnetic field and force are applied, the negative piezoelectric effect is not present. Therefore, the positive piezoelectric effect is used to convert the wearer's mechanical energy of movement into electrical energy.
[0036] Optional. The piezoelectric film 23 is made of a lightweight and flexible material with a density only 1 / 4 that of piezoelectric ceramics, allowing it to adhere to the surface of complex coils. Simultaneously, the piezoelectric film 23 exhibits high sensitivity, outputting a voltage 10 times that of piezoelectric ceramics under the same force, providing excellent power generation and effectively meeting the power needs of earring users.
[0037] Optionally, through the combined action of electromagnetic induction and piezoelectric film 23, two currents are generated simultaneously. The dual-mode charging efficiency is more than 30% higher than that of single electromagnetic induction, effectively realizing automatic charging of electrical energy, reducing the phenomenon of insufficient power, and effectively meeting the power needs of earring users.
[0038] In this preferred embodiment, the self-charging module 2 further includes: a rectifier circuit 24, connected to the induction coil 22 and the battery module 3, used to convert the alternating current on the induction coil 22 into direct current; the battery module 3 is used to store the direct current to form electricity.
[0039] Based on the above structure, the rectifier circuit 24 is an electronic circuit that converts alternating current (AC) into direct current (DC). It utilizes the unidirectional conductivity of diodes to convert alternating positive and negative AC voltages into unidirectional pulsating DC voltages.
[0040] Optionally, since the battery module 3 generally stores direct current (DC), while alternating current (AC) is used for long-distance transportation and the transmission of electrical energy through magnetic induction, the AC needs to be converted to DC before it can be stored for use in the earrings, thus effectively realizing the storage and utilization of electrical energy.
[0041] In this preferred embodiment, the number of turns of the induction coil 22 is in the range of 10 to 20 turns.
[0042] Based on the above structure, the number of turns of the induction coil 22 is affected by space. Too many turns require too much space, but the space in the earring shell 1 is limited. Setting more turns would make the earring too large, which is not conducive to wearing. Setting fewer turns results in slower magnetic induction efficiency, with only one induction coil 22 cutting, which may lead to less stored power. Therefore, the number of turns of the induction coil 22 is set in the range of 10 to 20 turns, effectively balancing the relationship between usable space and charging efficiency.
[0043] In a preferred embodiment, the device further includes a wireless charging module 4, which is installed inside the earring shell 1. The module includes a receiving coil 41, an AC / DC converter 42, and a charging compartment 43. The receiving coil 41 is used to receive high-frequency AC power transmitted by the high-frequency transmitting coil 49 in the charging compartment 43. The AC / DC converter 42 is used to convert the high-frequency AC power into DC power. The AC / DC converter 42 is connected to the battery module 3, which is used to store DC power to generate electricity.
[0044] Reference Figure 3 Based on the above structure, in addition to the self-charging module 2, a wireless charging module 4 is also provided. The wireless charging module 4 uses a high-frequency transmitting coil 49 to transmit high-frequency AC power. This method has a fast charging efficiency. When it is urgently needed or the power is insufficient, it can be charged through the wireless charging mode.
[0045] Optionally, the high-frequency transmitting coil 49 emits high-frequency alternating current, which cannot be directly stored in the battery module 3. Therefore, an AC-DC converter 42 is required to convert the AC current into DC current, thereby effectively realizing the storage of electrical energy.
[0046] In this preferred embodiment, the charging case 43 further includes: a charging box body, including a charging base 44, a charging cover 45, and an earring placement hole 46; a charging circuit 47, connected to a high-frequency transmitting coil 49, for supplying high-frequency AC power to the high-frequency transmitting coil 49; and a charging interface 48, connected to the charging circuit 47, for connecting to an external power source; the charging circuit 47, the charging interface 48, and the high-frequency transmitting coil 49 are all placed inside the charging base 44.
[0047] Based on the above structure, when the earring is removed for charging, the earring is placed in the charging case. The charging circuit 47 in the charging case emits high-frequency alternating current, which causes the receiving coil 41 in the earring to cooperate, thereby achieving the charging effect of the earring.
[0048] In addition, the charging case 43 is also equipped with a charging port 48. The high-frequency AC power is reduced on the charging circuit 47 inside the charging case 43, and the charging case 43 can be charged through the charging port 48 to ensure that the charging case 43 has sufficient power. When traveling, the charging case 43 is equivalent to a power bank for the earrings, allowing them to be charged quickly.
[0049] In a preferred embodiment, the device further includes a functional module 5, which is disposed inside the earring shell 1 and includes a sensing sensor and a processor. The sensing sensor is used to acquire basic information of the wearer and transmit it to the processor. The processor is used to receive and store the basic information.
[0050] Based on the above structure, the sensing sensors can include various types. For example, an accelerometer can detect the linear acceleration of the device in three axes, used to track changes in motion direction and speed, and can detect the wearer's fitness data. A gyroscope can measure the rotation and angular velocity of the earring, and can detect the wearer's body rotation movements and posture changes. GPS can provide geographical location data, enabling outdoor sports tracking and recording of movement routes. Multiple sensing sensors can acquire basic information about the wearer. It should be noted that this basic information can be information generated by the wearer's movement or the wearer's physical information. The functions of functional module 5 are related to the types of sensing sensors.
[0051] Optionally, after the sensor in the earring acquires the wearer's basic information, it can transmit it to the processor. The processor stores the basic information and transmits it to the wearer's user terminal. The wearer can view and save the basic information on the user terminal, effectively realizing the daily application of the earring.
[0052] In a preferred embodiment, it further includes: an earring hook 11, which is connected to the earring shell 1 and is in the shape of a hook for wearing.
[0053] Based on the above structure, the earring is a device for detecting the wearer's basic information. It can be set in the form of an earring hook 11 and hung in the wearer's ear canal. Wearing it frequently helps the earring to monitor the wearer's basic information in real time.
[0054] In this preferred embodiment, it further includes: a connecting ring 12, including a first magnetic block and a second magnetic block, the first magnetic block being installed on the earring hook 11, and the second magnetic block being installed on the earring shell 1, the first magnetic block and the second magnetic block having opposite magnetism.
[0055] Reference Figure 1 Based on the above structure, in order to facilitate the earring shell 1 to be removed and placed in the charging case 43 for charging, the earring shell 1 and the earring hook 11 are magnetically connected, which makes it easy to separate the two and effectively put the earring shell 1 into the earring placement hole 46 of the charging case 43.
[0056] Optionally, based on the principle that like magnets repel and unlike magnets attract, the magnetism of the first and second magnetic blocks is set to be opposite, and both the first and second magnetic blocks are strong magnets. Without external force, it is difficult to separate them, thus avoiding the phenomenon of the two magnetic blocks separating during daily wear. When charging, the wearer can remove the earring shell 1 by force and place it in the charging case 43.
[0057] In a preferred embodiment, the device further includes a connecting ring 12, which includes a plug and a slot. The plug is mounted on the earring hook 11, and the slot is mounted on the earring shell 1. The plug and the slot are connected to each other by insertion.
[0058] Based on the above structure, in addition to the magnetic attraction method, a plug and slot structure can also be set. The plug is a protrusion and the slot is a recess. The two cooperate with each other, and the protrusion of the plug is fully inserted into the recess of the slot, so that the earring shell 1 and the earring hook 11 can be easily separated and connected.
[0059] The implementation principle of the self-charging smart earring device in this embodiment of the utility model is as follows:
[0060] The earring hook 11 is worn on the wearer's ear through the ear piercing. The battery module 3, functional module 5, self-charging module 2, and wireless charging module 4 are installed inside the earring shell 1. The earring shell 1 is connected to the earring hook 11 and can be detached.
[0061] The self-charging module 2 consists of a permanent magnet 21 and an induction coil 22. The induction coil 22 can be fixedly nested in the earring shell 1 or movably connected to the earring shell 1. Utilizing the principle of electromagnetic induction, the permanent magnet 21 slides relative to the inner wall of the induction coil 22. During the wearer's acceleration or deceleration, the permanent magnet 21 moves relative to the induction coil 22 due to inertia, cutting the magnetic field and generating current. The induction coil 22 and the rectifier circuit 24 form a closed loop. The movement of the permanent magnet 21 in different directions generates current in different directions, which is converted into direct current by the rectifier circuit 24 to charge the battery and improve battery life.
[0062] Functional module 5 can perform functions such as physiological detection and transmit signals to human interaction devices such as mobile phones via wireless transmission.
[0063] The earring shell 1 has good sealing properties to prevent moisture from entering the cavity of the earring shell 1 and corroding the components of each module.
[0064] The accompanying wireless charging case 43 consists of a charging cover 45, a charging base 44, a high-frequency transmitting coil 49, a charging interface 48, and a charging circuit 47. Utilizing the principle of electromagnetic induction, the built-in high-frequency transmitting coil 49 generates a changing magnetic field through which alternating current passes. The earring shell 1 contains a receiving coil 41. When the earring is placed inside the wireless charging case 43, the alternating current in the high-frequency transmitting coil 49 induces a current in the receiving coil 41 through electromagnetic induction, charging the earring.
[0065] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A self-charging smart earring device, characterized in that, include: Earring shell (1); The self-charging module (2) is installed inside the earring shell (1) and includes a permanent magnet (21), an induction coil (22) and a piezoelectric film (23). The induction coil (22) is movably connected to the earring shell (1). The permanent magnet (21) is fixed on the shell of the earring shell (1). The magnetic field lines of the permanent magnet (21) pass through the induction coil (22). The induction coil (22) is wound in multiple turns, and the multiple turns of the induction coil (22) are separated by a piezoelectric film (23). The multiple turns of the induction coil (22) are in contact with the piezoelectric film (23). The piezoelectric film (23) is used to squeeze and generate current during the shaking and collision of the multiple turns of the induction coil (22). The battery module (3) is connected to the self-charging module (2) and is used to receive the current on the induction coil (22) to generate electricity.
2. The self-charging smart earring device of claim 1, wherein, The self-charging module (2) also includes: A rectifier circuit (24) is connected to the induction coil (22) and the battery module (3) to convert the alternating current on the induction coil (22) into direct current. The battery module (3) is used to store direct current to generate electricity.
3. The self-charging smart earring device according to claim 1, characterized in that, The number of turns of the induction coil (22) is in the range of 10 to 20 turns.
4. The self-charging smart earring device of claim 1, wherein, Also includes: The wireless charging module (4) is installed inside the earring shell (1) and includes a receiving coil (41), an AC / DC converter (42) and a charging case (43). The receiving coil (41) is used to receive high-frequency AC power transmitted by the high-frequency transmitting coil (49) in the charging case (43), and the AC / DC converter (42) is used to convert the high-frequency AC power into DC power. The AC / DC converter (42) is connected to the battery module (3), which is used to store DC power to generate electricity.
5. The self-charging smart earring device of claim 4, wherein, The charging compartment (43) also includes: The charging case includes a charging base (44), a charging cover (45), and an earring placement hole (46); A charging circuit (47) is connected to the high-frequency transmitting coil (49) and is used to supply high-frequency alternating current to the high-frequency transmitting coil (49); The charging interface (48) is connected to the charging circuit (47) and is used to connect to an external power source; The charging circuit (47), the charging interface (48), and the high-frequency transmitting coil (49) are all placed inside the charging base (44).
6. The self-charging smart earring device of claim 1, wherein, Also includes: The functional module (5) is located inside the earring shell (1) and includes a sensor and a processor. The sensor is used to acquire basic information of the wearer and transmit it to the processor. The processor is used to receive and store the basic information.
7. The self-charging smart earring device of claim 1, wherein, Also includes: The earring hook (11) is connected to the earring shell (1) and is in the shape of a hook for wearing.
8. The self-charging smart earring device of claim 7, wherein, Also includes: The connecting ring (12) includes a first magnetic block and a second magnetic block. The first magnetic block is mounted on the earring hook (11), and the second magnetic block is mounted on the earring shell (1). The first magnetic block and the second magnetic block have opposite magnetic properties.
9. The self-charging smart earring device of claim 7, wherein, Also includes: The connecting ring (12) includes a plug and a slot. The plug is mounted on the earring hook (11), and the slot is mounted on the earring shell (1). The plug and the slot are connected to each other by insertion.