CN214707318U - Wireless charging system and nursing utensil - Google Patents
Wireless charging system and nursing utensil Download PDFInfo
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- CN214707318U CN214707318U CN202120227529.2U CN202120227529U CN214707318U CN 214707318 U CN214707318 U CN 214707318U CN 202120227529 U CN202120227529 U CN 202120227529U CN 214707318 U CN214707318 U CN 214707318U
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Abstract
The utility model discloses a wireless charging system and nursing utensil, wireless charging system is used for charging to the battery, wireless charging system includes the receiving terminal, transmitting terminal and electromagnetic wave regulating part, the receiving terminal includes receiving coil and the charge management unit who has integrateed communication module, the receiving coil leads to charge management unit and is connected with the battery, communication module can receive and discern one in QI agreement and the private agreement, the transmitting terminal is including the second charge management unit who has integrateed second communication module, and the transmitting coil who is connected with second charge management unit, second communication module is used for producing wave form signal in order to form the private agreement, transmitting coil is used for with receiving coil communication back with electric energy coupling transmission to receiving terminal, electromagnetic wave regulating part sets up at receiving terminal and/or transmitting terminal, a coupling coefficient for increase transmitting coil and receiving coil. Can be convenient for electric toothbrush is nimble to be charged to, charging efficiency has been improved.
Description
Technical Field
The utility model relates to a small household electrical appliances field especially relates to a wireless charging system and nursing utensil.
Background
The electric toothbrush needs to be continued to the journey by the storage battery, and because the nursing appliances such as the electric toothbrush and the tooth flushing device have higher requirements on water resistance, a charging system adopting a wireless charging mode can be used without reserving a plug interface, so that the electric toothbrush is more suitable for application of personal nursing appliances. Because products such as electric toothbrush, tooth flusher are less, and charging current and charging temperature rise receive the area of charging influence great, lead to wireless coil of charging can't be done big enough.
At present, in a limited space, on the premise of ensuring safety, ideal charging current is difficult to achieve. In addition, the electric toothbrushes with wireless charging systems on the market are various, and the wireless charging systems of various manufacturers do not have a protocol or only adopt a proprietary protocol. The wireless charging system without the protocol needs to set the charging current to be smaller, so that high-temperature danger caused by large current when encountering metal foreign matters is avoided. If the wireless charging system of the private protocol is adopted, it is difficult to be compatible with wireless charging equipment other than the private protocol to be connected to the wireless charging system for use, or the wireless charging equipment can only be used with a weak charging current, so that the charging efficiency of the electric toothbrush is low.
Disclosure of Invention
In order to solve the problem, the utility model provides a wireless charging system and nursing utensil. When the wireless charging system is used, the electric toothbrush can obtain larger charging current on the premise of ensuring charging safety, charging efficiency is improved, charging is flexible, and use is convenient.
The utility model adopts the technical proposal that: a wireless charging system is provided, the wireless charging system is used for charging a battery, the wireless charging system comprises a receiving end, a transmitting end and an electromagnetic wave regulating piece, the receiving end comprises a receiving coil and a charging management unit integrated with a communication module, the receiving coil is electrically connected with the battery through the charging management unit, the communication module can receive and identify one of a QI protocol and a private protocol, the transmitting end comprises a second charging management unit integrated with a second communication module and a transmitting coil electrically connected with the second charging management unit, the second communication module is used for generating a waveform signal to form the private protocol, the transmitting coil is used for coupling and transmitting electric energy to the receiving end after communicating with the receiving coil, the electromagnetic wave regulating piece is arranged at the receiving end and/or the transmitting end, for increasing the coupling coefficient of the transmitting coil and the receiving coil.
Preferably, the electromagnetic wave adjusting member comprises a structural layer formed by a soft magnetic material, and the structural layer can directionally control magnetic permeability and is used for adjusting the anti-saturation magnetic field of the transmitting coil and the receiving coil, so that the magnetic loss of the transmitting coil is reduced.
Preferably, the structural layer is a nanocrystalline soft magnetic alloy layer.
Preferably, the electromagnetic wave adjusting part includes a second structural layer connected to the structural layer and disposed away from a coupling side of the transmitting coil and the receiving coil, and the second structural layer is made of a wave-absorbing material and is used for partially blocking or reflecting the electromagnetic wave directed to the structural layer.
Preferably, the structural layer is in a sheet shape, and the second structural layer is in a coating layer covering the outer surface of the structural layer.
Preferably, the wire diameter of the transmitting coil is set between 0.2 and 0.7 mm, and the diameter of the outermost turn of the receiving coil is set within 25 mm.
Preferably, the transmitting end is set to be always in a low power consumption scanning state, and once a magnetic field signal is scanned, handshake data is sent to perform handshake with the receiving end.
The utility model discloses still provide a nursing utensil, nursing utensil includes host computer, charging panel and aforementioned wireless charging system, the charging panel can link to each other with the power, the receiving terminal sets up on the host computer, the transmitting terminal sets up on the charging panel, the charging panel is used for right the transmitting coil power supply.
Preferably, the main machine is an electric toothbrush.
Preferably, the main machine is an electric tooth flushing device.
The utility model discloses a wireless charging system and nursing utensil can reach following technological effect: the receiving coil of the receiving end is electrically connected with the battery through the charging management unit, and the current in the receiving coil is converted into direct current which can be used for charging the battery through the rectifying and filtering module in the charging management unit. The data processing subunit, the rectifying and filtering module and the communication module are all integrated in one charging management unit, so that the occupation of the internal space of the nursing appliance is integrated. The communication module can receive and identify one of the QI protocol and the private protocol, and the high-temperature danger caused by large current when electromagnetic waves generated by the transmitting terminal meet metal foreign matters can be avoided through protocol support, so that the charging current of the receiving terminal can be set to be larger, and the charging efficiency is improved. The communication module enables the nursing appliance with the charging system to be charged on the specific wireless charging panel of the manufacturer and also can be charged on the wireless charging panel of the electronic equipment conforming to QI, and the nursing appliance is wide in application range and flexible and convenient to charge. The second communication module of the transmitting terminal is used for generating a waveform signal to form a private protocol which can be identified by the communication module, so that only the nursing appliance with the wireless charging system can be charged on a wireless charging plate specific to a manufacturer, and the safety is high. The second data processing subunit and the second communication module are integrated in the second charging management unit, so that the occupation of the internal space of the transmitting plate is concentrated, and the miniaturization of the whole charging system is facilitated. After the communication module establishes communication connection, the receiving coil is used for inducing electromagnetic waves to generate current for charging, so that electric energy of the transmitting end is coupled and transmitted to the receiving end. And the electromagnetic wave adjusting piece is used for increasing the coupling coefficient of the transmitting coil and the receiving coil, and the charging efficiency is further improved.
Reference numerals
Drawings
Fig. 1 is a schematic diagram of the internal structure of the charging system of the present invention;
FIG. 2 is a schematic diagram of an internal structure of the charge management unit in FIG. 1;
fig. 3 is a schematic diagram of an internal structure of the second charge management unit in fig. 1;
fig. 4 is a schematic structural diagram of an embodiment of the charging system of the present invention;
fig. 5 is a schematic structural diagram of a charging system according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of another embodiment of the charging system of the present invention;
fig. 7 is experimental data of the present invention using the novel charging system.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, in an embodiment of the present invention, a wireless charging system is provided, which can be applied to a personal care appliance, such as: electric toothbrushes, tooth cleaners, facial cleaners, massagers, etc., to charge a battery 90 in a personal care appliance, where and below the battery 90 is referred to as a rechargeable battery, are described below for the example of an electric toothbrush. The wireless charging system comprises a receiving end 10, a transmitting end 20 and an electromagnetic wave adjusting piece 30, wherein the receiving end 10 comprises a receiving coil 11 and a charging management unit 12 integrated with a communication module 121, the receiving coil 11 is electrically connected with a battery 90 through the charging management unit 12, the communication module 121 can receive and identify one of a QI protocol and a private protocol, the transmitting end 20 comprises a second charging management unit 21 integrated with a second communication module 211, and a transmitting coil 22 electrically connected with the second charging management unit 21, the second communication module 211 is used for generating a waveform signal to form the private protocol, the transmitting coil 22 is used for coupling and transmitting electric energy to the receiving end 10 after communicating with the receiving coil 11, and the electromagnetic wave adjusting piece 30 is arranged on the receiving end 10 and/or the transmitting end 20 and is used for increasing the coupling coefficient of the transmitting coil 22 and the receiving coil 11.
With continuing reference to fig. 1 to 4, specifically, the receiving coil 11 of the receiving terminal 10 is electrically connected to the battery 90 through the charging management unit 12, where the electrical connection is through a wire or a circuit board, and the current of the receiving coil 11 is converted into a direct current that can be used to charge the battery 90 through the rectifying and filtering module 122 in the charging management unit 12. The data processing subunit 123, the rectifying and filtering module 122, and the communication module 121 are all integrated in one charging management unit 12, where the charging management unit 12 may be a microcontroller or a chip, so that when the receiving end 10 is installed in the electric toothbrush, only one microcontroller or one chip needs to be installed, the chip type may be CPS4510, and no additional specific communication chip is needed, which greatly reduces the occupation of the receiving end 10 in the internal space of the electric toothbrush.
The communication module 121 can receive and identify one of the QI protocol and the proprietary protocol, and particularly, the communication module 121 can receive a wireless signal through the receiving coil 11 and can identify the protocol in the wireless signal through the communication module 121. In one aspect, the communication module 121 may identify the QI protocol, and establish a communication connection with a transmitting end (not shown) conforming to the QI protocol; on the other hand, the communication module 121 can recognize the private protocol and establish a communication connection with the transmitting end 20 conforming to the private protocol. A proprietary protocol refers to a communication protocol that is set by a manufacturer based on the particular device conditions. The QI protocol refers to a public communication protocol meeting the requirements of the wireless charging alliance on the charging standard of the device, and the contents of the two protocols are not described in detail. Compared with a wireless charging system without a protocol, the wireless charging system can avoid high-temperature danger caused by large current generated when electromagnetic waves generated by the transmitting terminal 20 meet metal foreign matters through protocol support, so that the charging current of the receiving terminal 10 can be set to be larger, and the charging efficiency is improved. Moreover, the communication module 121 enables the electric toothbrush with the charging system to be charged on a specific wireless charging panel of the manufacturer and also on a wireless charging panel conforming to QI, so that the electric toothbrush is wide in application range and flexible and convenient to charge.
With reference to fig. 1 to 4, in the embodiment of the present invention, the second communication module 211 of the transmitting terminal 20 is used to generate a waveform signal to form a private protocol for the communication module 121 to recognize, so that the electric toothbrush having only the wireless charging system can be charged on the factory-specific wireless charging pad, and the safety is high. The second data processing subunit 212 and the second communication module 211 are integrated in a second charging management unit 21, where the second charging management unit 21 may be a microcontroller or a chip, so that the charging board only needs to be equipped with a microcontroller or a chip, the chip type may be CPS8510, no additional specific communication chip is needed, the occupation of the internal space of the transmitting terminal 20 on the transmitting board is greatly reduced, and the miniaturization of the entire charging system is facilitated.
In addition, the communication mode of the wireless charging system adopts ASK modulation technique, when the battery 90 is fully charged, the communication module 121 can send an instruction to the second communication module 211, and the second data processing subunit 212 sends an instruction, so that the second charging management unit 21 reduces the transmission power, avoids self-excitation, and reduces power consumption. When the second communication module 211 does not receive the correct handshake signal, the second charging management unit 21 enters the foreign object detection mode, thereby preventing the heating phenomenon caused by the eddy current generated by the metal foreign object, and eliminating some potential safety hazards of wireless charging. The technical solutions of equivalent transformation obtained by the embodiments of the present invention and the accompanying drawings belong to the same technical concept.
As will be further described below, the receiving coil 11 is electrically connected to a capacitor assembly (not shown) disposed at the receiving end 10 to form a series resonant circuit, and the transmitting coil 22 is electrically connected to a capacitor assembly (not shown) disposed at the transmitting end 20 to form a second series resonant circuit, which may be various, and will not be described in detail herein. The capacitor assembly may be a single capacitor physically, or may be obtained by connecting a plurality of capacitor elements in parallel, so that the resonant circuit can be ac-conducted, and the resonant circuit has a set resonant frequency, which is not described in detail. After the communication module 121 establishes a communication connection, the receiving coil 11 is used for inducing electromagnetic waves to generate an induced potential for charging and discharging the capacitor assembly, the resonant circuit generates a coupling current by using the ac conduction characteristic of the capacitor, and the rectifying and filtering module 122 converts the coupling current into a charging current, so as to couple and transmit the electric energy of the transmitting terminal 20 to the receiving terminal 10. Those skilled in the art pass through the utility model discloses embodiment and drawing obtain corresponding technical means to it is right to produce any the utility model discloses well circuit transformation of resonance mode all belongs to the utility model discloses a protection scope, differs here and a perplexing.
As shown in fig. 4 to 6, it should be specifically clarified that the electromagnetic wave adjusting member 30 may be separately provided at the receiving end 10, or the electromagnetic wave adjusting member 30 may be separately provided at the transmitting end 20, or the electromagnetic wave adjusting member 30 may be provided at both the receiving end 10 and the transmitting end 20. The electromagnetic wave adjusting member 30 may be a magnetic sheet, a magnetic conductive sheet, a magnetic separation sheet, a magnetic conductive block, etc., the material of the electromagnetic wave adjusting member 30 may be a known soft magnetic material or a known magnetic separation material obtained by sintering ferrite, etc. at a high temperature, the electromagnetic wave adjusting member 30 may increase the intensity of the electromagnetic wave by directionally controlling the magnetic conductivity, or may limit the form of scattering everywhere by bouncing some electromagnetic waves, so as to increase the coupling coefficient of the transmitting coil 22 and the receiving coil 11, thereby further improving the charging efficiency. Of course, it can also be used to control the temperature rise and reduce the temperature of the devices around the charging system, and will not be described in detail here.
Referring to fig. 1 to 4, in order to facilitate the arrangement of the electromagnetic wave adjusting member 30, in an alternative embodiment, the electromagnetic wave adjusting member 30 includes a structural layer 31 formed of a soft magnetic material, and the structural layer 31 can directionally control magnetic permeability for adjusting the anti-saturation magnetic field of the transmitting coil 22 and the receiving coil 11, thereby reducing the magnetic loss of the transmitting coil 22. The structural layer 31 may be disposed on the receiving end 10 and/or the transmitting end 20 and away from the coupling side V of the transmitting coil 22 and the receiving coil 11 (the reference is omitted hereinafter), or the structural layer 31 may be disposed on the receiving end 10 and/or the transmitting end 20 and located on the coupling side of the transmitting coil 22 and the receiving coil 11, or the structural layer 31 may be disposed on the receiving end 10 and the transmitting end 20 and located on one of the coupling side of the transmitting coil 22 and the receiving coil 11 and the other coupling side away from the transmitting coil 22 and the receiving coil 11, and so on, which will not be described in detail herein. Preferably, the structural layer 31 is a nano-crystalline soft magnetic alloy layer, which can thin the electromagnetic wave adjusting member 30. The nanocrystalline soft magnetic alloy layer is obtained by known soft magnetic materials, and can further improve the anti-saturation magnetic field of the transmitting coil 22 and the receiving coil 11, and those skilled in the art can obtain the technical scheme of equivalent transformation through the embodiment of the utility model and the attached drawings, and the technical scheme belongs to the same technical concept.
With continued reference to fig. 1 to 4, in order to avoid heating of the metal components inside the charging system, in an alternative embodiment, the electromagnetic wave-regulating member 30 includes a second structural layer 32 connected to the structural layer 31 and disposed away from the coupling side of the transmitting coil 22 and the receiving coil 11, and the second structural layer 32 is formed of a known wave-absorbing material for partially blocking or reflecting the electromagnetic waves directed to the structural layer 31. By limiting the extension of the electromagnetic waves towards the coupling side away from the transmitter coil 22 and the receiver coil 11, the temperature rise caused by the internal metal components of the electric toothbrush and/or the charging pad can be limited, which plays a certain protective role.
With continued reference to FIGS. 1, 4, and 7, for ease of manufacturing, in an alternative embodiment, structural layer 31 is provided in a sheet-like configuration and second structural layer 32 is provided as a coating over the outer surface of structural layer 31. Through this setting mode, charging system can reach the purpose of intensive space utilization. Preferably, in consideration of the balance, a preferable charging current and inductance can be obtained when the wire diameter of the transmitting coil 22 is set to be 0.2 to 0.7 mm and the wire diameter of the transmitting coil 22 is 0.5 mm. The outermost diameter of the receiving coil 11 is set within 25 mm so that the receiving coil 11 can be mounted on the bottom of the electric toothbrush.
With continued reference to fig. 1 to 4, in order to facilitate the connection of the wireless charging system, in an alternative embodiment, the transmitting terminal 20 is configured to be always in a low power consumption scanning state, and start to send handshake data to perform handshake with the receiving terminal 10 once a magnetic field signal is scanned. The advantage of this arrangement is that the wireless charging system can be used conveniently, and the power consumption of the transmitting terminal 20 can be saved.
The utility model discloses still provide a nursing utensil, it is shown with reference to fig. 1 to 4 to refer to, the nursing utensil includes host computer 80, charging panel 70 and aforementioned wireless charging system 60, and charging panel 70 can link to each other with the power, and the power here can be commercial power etc. and charging panel 70 is used for supplying power to transmitting coil 22. The receiving terminal 10 is disposed on the main body 80, which means that the receiving terminal 10 can be fixed on the housing of the main body 80 to realize integral installation. The receiving coil 11 of the receiving terminal 10 is electrically connected to the battery 90 through the charging management unit 12, and the current in the receiving coil 11 is converted into direct current that can be used for charging the battery 90 through the rectifying and filtering module 122 in the charging management unit 12. The data processing subunit 123, the rectifying and filtering module 122 and the communication module 121 are all integrated in one charging management unit 12, so as to integrate the internal space of the nursing device. The communication module 121 can receive and identify one of the QI protocol and the proprietary protocol, and through protocol support, high-temperature danger caused by large current when electromagnetic waves generated by the transmitting terminal 20 meet metal foreign matters can be avoided, so that the charging current of the receiving terminal 10 can be set to be relatively large, and the charging efficiency is improved. The communication module 121 enables the nursing appliance with the charging system to be charged on the specific wireless charging panel of the manufacturer and also on the wireless charging panel of the electronic equipment conforming to QI, so that the nursing appliance is wide in application range and flexible and convenient to charge. The transmitting terminal 20 is disposed on the charging pad, which means that the transmitting terminal 20 can be fixed on the housing of the charging pad for integral installation. The second communication module 211 of the transmitting terminal 20 is used for generating a waveform signal to form a private protocol that can be recognized by the communication module 121, so that only the nursing device with the wireless charging system can be charged on the factory-specific wireless charging pad, and the safety is high. The second data processing sub-unit 212 and the second communication module 211 are integrated in a second charging management unit 21, so that the internal space of the transmitting board is concentrated, and the miniaturization of the whole charging system is facilitated. After the communication module 121 establishes a communication connection, the receiving coil 11 is used for inducing electromagnetic waves to generate a current for charging, so as to couple and transmit the electric energy of the transmitting terminal 20 to the receiving terminal 10. Also, the electromagnetic wave adjuster 30 serves to increase the coupling coefficient of the transmitting coil 22 and the receiving coil 11, further improving the charging efficiency. Alternatively, the main body 80 is an electric toothbrush, or the main body 80 is an electric tooth rinsing device, so that the wireless charging system can be better utilized to realize miniaturization.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.
Claims (10)
1. A wireless charging system for charging a battery, the wireless charging system comprising:
the receiving end comprises a receiving coil and a charging management unit integrated with a communication module, the receiving coil is electrically connected with the battery through the charging management unit, and the communication module can receive and identify a QI protocol and at least one private protocol;
the transmitting terminal comprises a second charging management unit integrated with a second communication module and a transmitting coil electrically connected with the second charging management unit, the second communication module is used for generating a waveform signal to form the private protocol, and the transmitting coil is used for coupling and transmitting electric energy to the receiving terminal after communicating with the receiving coil; and the number of the first and second groups,
and the electromagnetic wave adjusting piece is arranged at the receiving end and/or the transmitting end and is used for increasing the coupling coefficient of the transmitting coil and the receiving coil.
2. The wireless charging system of claim 1, wherein the electromagnetic wave adjusting member comprises a structural layer formed of a soft magnetic material, and the structural layer can directionally control magnetic permeability for adjusting the anti-saturation magnetic field of the transmitting coil and the receiving coil, so as to reduce the magnetic loss of the transmitting coil.
3. The wireless charging system of claim 2, wherein the structural layer is a nanocrystalline soft magnetic alloy layer.
4. The wireless charging system according to claim 2 or 3, wherein the electromagnetic wave adjuster comprises a second structural layer connected to the structural layer and disposed away from a coupling side of the transmitting coil and the receiving coil, and the second structural layer is made of a wave-absorbing material and is configured to partially block or reflect the electromagnetic waves directed to the structural layer.
5. The wireless charging system of claim 4, wherein the structural layer is laminated, and the second structural layer is coated on an outer surface of the structural layer.
6. The wireless charging system of claim 4, wherein the wire diameter of the transmitting coil is set between 0.2 and 0.7 millimeters and the outermost turn diameter of the receiving coil is set within 25 millimeters.
7. The wireless charging system according to claim 1 or 6, wherein the transmitting terminal is configured to be always in a low power consumption scanning state, and starts to send handshake data to perform handshake with the receiving terminal once a magnetic field signal is scanned.
8. A nursing appliance comprising a main unit and a charging pad connectable to a power source, wherein the nursing appliance further comprises a wireless charging system according to any one of claims 1 to 7, the receiving terminal is disposed on the main unit and the transmitting terminal is disposed on the charging pad, and the charging pad is configured to power the transmitting coil.
9. The care implement of claim 8, wherein the host machine is a power toothbrush.
10. The care implement of claim 8, wherein the main machine is an electric dental irrigator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120227529.2U CN214707318U (en) | 2021-01-27 | 2021-01-27 | Wireless charging system and nursing utensil |
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| CN202120227529.2U CN214707318U (en) | 2021-01-27 | 2021-01-27 | Wireless charging system and nursing utensil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117040059A (en) * | 2023-08-09 | 2023-11-10 | 深圳市雅为智能技术有限公司 | Wireless charging method and device based on intelligent watch |
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- 2021-01-27 CN CN202120227529.2U patent/CN214707318U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117040059A (en) * | 2023-08-09 | 2023-11-10 | 深圳市雅为智能技术有限公司 | Wireless charging method and device based on intelligent watch |
| CN117040059B (en) * | 2023-08-09 | 2024-06-04 | 深圳市雅为智能技术有限公司 | Wireless charging method and device based on intelligent watch |
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