CN112870567A - Power conversion equipment and radio frequency beauty instrument - Google Patents

Power conversion equipment and radio frequency beauty instrument Download PDF

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Publication number
CN112870567A
CN112870567A CN202110273203.8A CN202110273203A CN112870567A CN 112870567 A CN112870567 A CN 112870567A CN 202110273203 A CN202110273203 A CN 202110273203A CN 112870567 A CN112870567 A CN 112870567A
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beauty instrument
radio frequency
power conversion
beauty
control module
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张龙
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Dongguan Lingfeng Technology Co ltd
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Dongguan Lingfeng Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0004—Applications of ultrasound therapy
    • A61N2007/0034—Skin treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0073—Ultrasound therapy using multiple frequencies

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  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)

Abstract

The invention provides a power conversion device and a radio frequency beauty instrument, wherein, a power conversion circuit comprises: the full-bridge circuit, and the input interface and the output interface which are connected with the full-bridge circuit; the full-bridge circuit is used for obtaining the PWM waveform output by the control module in the radio frequency beauty instrument through the input interface, converting the PWM waveform into a target frequency waveform, and outputting the target frequency waveform through the output interface, so that the output power of the radio frequency beauty instrument is converted in a non-isolated mode through the power conversion equipment, multiple functions of the radio frequency beauty instrument are realized, multiple application requirements of a user are met, and the user experience is improved.

Description

Power conversion equipment and radio frequency beauty instrument
Technical Field
The invention relates to the technical field of beauty instruments, in particular to power conversion equipment and a radio frequency beauty instrument.
Background
With the improvement of living standard, people pay more and more attention to health care and beauty treatment, and beauty treatment becomes a rigid demand. The beauty instrument is a machine for regulating and improving the body and the face according to the physiological function of a human body, and the functions of the beauty instrument are mainly skin whitening, skin tendering, freckle removing, wrinkle removing, hair removal, face wrinkle removing and the like, wherein the face wrinkle removing beauty instrument mainly utilizes an ultrasonic radio frequency technology to massage the face skin, and meanwhile, ultrasonic waves can remove the wrinkles on the face, so that a user can achieve the beauty effect by glowing.
Most of the existing beauty instruments output a single square wave with a fixed Frequency through an MCU (Micro Control Unit), the single square wave obtains two complementary square waves after passing through a driving chip, and the two square waves pass through a power conversion circuit such as a transformer to obtain an RF (Radio Frequency) waveform, so that the RF waveform acts on the skin through a beauty head to realize a beauty function. In practical application, as the duty ratio of the square wave is fixed to be 50%, the adjustment cannot be performed, the peak voltage of the subsequent RF waveform cannot be adjusted, the pricking feeling and the current burning feeling during use are caused, and the concentrated capacitance of the transformer is large, so that the high-frequency power conversion cannot be realized, that is, the output frequency of the beauty instrument is limited, the function of the beauty instrument is limited, and the user experience is influenced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a power conversion device and a radio frequency cosmetic apparatus, so as to alleviate the above technical problems, and the full bridge circuit in the power conversion device is used to adjust the output frequency of the radio frequency cosmetic apparatus in a non-isolated manner, so as to implement multiple functions of the radio frequency cosmetic apparatus, thereby satisfying multiple application requirements of users and improving user experience.
In a first aspect, an embodiment of the present invention provides a power conversion device, where the power conversion device is applied to a radio frequency beauty instrument; the power conversion equipment comprises a full-bridge circuit, an input interface and an output interface, wherein the input interface and the output interface are connected with the full-bridge circuit; the full-bridge circuit is used for acquiring the PWM waveform output by the control module in the radio frequency beauty instrument through the input interface, converting the PWM waveform into a target frequency waveform and outputting the target frequency waveform through the output interface.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the full-bridge circuit includes a first bridge arm and a second bridge arm that are complementary to each other; the input interface comprises a first input end and a second input end, and the output interface comprises a first output end and a second output end; the first bridge arm is respectively connected with a first input end and a first output end, the second bridge arm is respectively connected with a second input end and a second output end, the first input end is complementary with the second input end, and the first output end is complementary with the second output end.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the first bridge arm includes a first triode and a second triode, and the second bridge arm includes a third triode and a fourth triode; the first triode and the third triode are both PNP tubes, and the second triode and the fourth triode are both NPN tubes.
In a second aspect, an embodiment of the present invention provides a radio frequency beauty instrument, including: the beauty instrument comprises a beauty instrument body and a beauty head fixed at the end part of the beauty instrument body; the beauty instrument body is provided with the power conversion equipment, the control module and the driving circuit, the control module, the driving circuit and the power conversion equipment are sequentially connected, and the power conversion equipment is also connected with the beauty head; the beauty head is provided with an acquisition module connected with the control module and used for acquiring skin parameters and sending the skin parameters to the control module; wherein the skin parameters comprise skin humidity parameters and/or skin temperature parameters; the control module is pre-stored with a mapping relation between skin parameters and frequency waveforms; the control module is used for receiving the skin parameters and reading target frequency waveforms corresponding to the received skin parameters from the mapping relation; and outputting two complementary PWM waveforms with adjustable duty ratios corresponding to the target frequency waveform, and transmitting the PWM waveforms to the power conversion equipment through the driving circuit, so that the power conversion equipment converts the PWM waveforms into the target frequency waveform, and the target frequency waveform acts on the skin through the beauty treatment head.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the radio frequency beauty instrument further includes a power supply module, which is connected to the control module, the driving circuit, and the power conversion device; the power supply module is used for supplying power to the control module, the driving circuit and the power conversion equipment.
With reference to the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, wherein the cosmetic apparatus body is further provided with a key module connected to the control module, and the key module includes a switch key unit and a shift key unit; the gear key unit comprises a high-gear key, a middle-gear key and a low-gear key.
With reference to the second possible implementation manner of the second aspect, an embodiment of the present invention provides a third possible implementation manner of the second aspect, wherein the beauty instrument body is further provided with a gear indicator light and a breathing horse race light; the gear indicator lamp is arranged in a preset distance range of the gear key unit and used for indicating gear information when the radio frequency beauty instrument works; the breathing horse race lamp is used for indicating the working state of the radio frequency beauty instrument.
With reference to the second aspect, embodiments of the present invention provide a fourth possible implementation manner of the second aspect, wherein a plurality of electrode pads are disposed on the beauty treatment head, and the plurality of electrode pads are uniformly distributed according to the shape of the beauty treatment head; wherein, the shape of the beauty head is one of the following: circular, oval, heart-shaped, and square.
With reference to the second aspect, an embodiment of the present invention provides a fifth possible implementation manner of the second aspect, wherein a charging interface is disposed at a bottom of the beauty instrument body, and is used for being electrically connected to a mains supply to charge the radio frequency beauty instrument.
With reference to the second aspect, an embodiment of the present invention provides a sixth possible implementation manner of the second aspect, wherein the radio frequency beauty instrument further includes a base, and the base is provided with a groove matched with a shape of a bottom of the beauty instrument body.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides power conversion equipment and a radio frequency beauty instrument, wherein the power conversion equipment comprises a full-bridge circuit, and realizes power conversion of the radio frequency beauty instrument through the full-bridge circuit.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a power conversion apparatus according to an embodiment of the present invention;
fig. 2 is a structural diagram of a full bridge circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a radio frequency beauty instrument according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another rf beauty instrument according to an embodiment of the present invention;
fig. 5 is a structural diagram of a radio frequency beauty instrument according to an embodiment of the present invention;
fig. 6 is a block diagram of another rf cosmetic device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a first bridge arm driving circuit according to an embodiment of the present invention;
fig. 8 is a schematic view of a radio frequency beauty treatment apparatus according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a shift position key unit according to an embodiment of the present invention;
fig. 10 is a schematic view of another rf beauty instrument according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the problems that the existing beauty instrument has limited output frequency and cannot realize high-frequency conversion, so that the function of the beauty instrument is limited, the embodiment of the invention provides power conversion equipment and a radio frequency beauty instrument.
For the convenience of understanding the present embodiment, a detailed description is provided below of a power conversion apparatus provided by an embodiment of the present invention.
The embodiment of the invention provides power conversion equipment, which is applied to a radio frequency beauty instrument; as shown in fig. 1, the power conversion device 30 includes a full bridge circuit 3, and an input interface 1 and an output interface 2 connected to the full bridge circuit; the full-bridge circuit 3 is configured to obtain a PWM (Pulse Width Modulation) waveform output by a control module in the radio frequency beauty instrument through the input interface 1, convert the PWM waveform into a target frequency waveform, and output the target frequency waveform through the output interface 2.
In one possible embodiment, as shown in fig. 2, the full bridge circuit includes a first bridge leg 31 and a second bridge leg 32 which are complementary; the input interface comprises a first input end A and a second input end A ', the output interface comprises a first output end B and a second output end B', wherein the first bridge arm 31 is respectively connected with the first input end A and the first output end B, and the second bridge arm 32 is respectively connected with the second input end A 'and the second output end B'; and, the first input terminal a and the second input terminal a 'are complementary, and the first output terminal B and the second output terminal B' are complementary.
The first bridge arm 31 includes a first transistor 311 and a second transistor 312, and the second bridge arm 32 includes a third transistor 321 and a fourth transistor 322; the first triode 311 and the third triode 321 are both PNP transistors, and the second triode 312 and the fourth triode 322 are both NPN transistors.
Specifically, the base of the first triode 311 and the base of the second triode 312 are both connected to the first input terminal a, the emitter of the first triode 311 is connected to the power supply module, the collector of the first triode 311 and the collector of the second triode 312 are both connected to the first output terminal B, and the emitter of the second triode 312 is grounded; the base of the third triode 321 and the base of the fourth triode 322 are connected with the second input end a ', the emitter of the third triode 321 is connected with the power supply module, the collector of the third triode 321 and the collector of the fourth triode 322 are both connected with the second output end B', and the emitter of the fourth triode 322 is grounded.
Therefore, in the embodiment of the present invention, the full bridge circuit 3 formed by the complementary first bridge arm 31 and second bridge arm 32 does not have the disadvantage of large integrated capacitance of the voltage transformer, and the power conversion in the radio frequency beauty instrument is realized in a non-isolated manner, so that the conversion of the target frequency waveform of 3M or above can be realized, the radio frequency beauty instrument outputs the high frequency waveform, the function of the radio frequency beauty instrument is enriched, and the application requirements of the user are met.
On the basis of the power conversion equipment, the embodiment of the invention also provides a radio frequency beauty instrument, which comprises: the beauty instrument comprises a beauty instrument body and a beauty head fixed at the end part of the beauty instrument body; as shown in fig. 3, the beauty instrument body comprises a control module 10, a driving circuit 20 and a power conversion device 30 which are connected in sequence; the power conversion device 30 is also connected to the cosmetic head. In addition, the cosmetic head and the cosmetic apparatus body are integrally provided, and the cosmetic head cannot be detached from the cosmetic apparatus body in practical use.
The beauty head is also provided with an acquisition module 40 connected with the control module 10 and used for acquiring skin parameters and sending the skin parameters to the control module 10; wherein the skin parameters comprise skin humidity parameters and/or skin temperature parameters; that is, when the beauty head contacts with the skin of the user, the collection module 40 starts to collect the skin parameters of the user, the skin humidity parameter is used for representing the dryness of the skin of the user, and the skin temperature parameter is used for representing the current skin temperature of the user, so that in the use process of the radio frequency beauty instrument, the use feeling of the user can be guaranteed through the skin parameters, the situation that the skin of the user is too high in temperature or drier is avoided, and the experience of the user is improved.
The control module 10 stores a mapping relationship between skin parameters and frequency waveforms in advance; after receiving the skin parameters, the control module 10 reads the target frequency waveform corresponding to the received skin parameters from the mapping relationship; outputting two complementary PWM waveforms with adjustable duty ratio corresponding to the target frequency waveform, and transmitting the PWM waveforms to the power conversion equipment 30 through the driving circuit 20; the power conversion device 30 is configured to receive the PWM waveform, convert the PWM waveform into a target frequency waveform through the full-bridge circuit, and apply the target frequency waveform to the skin through the cosmetic head, so that a variety of target frequency waveforms can be obtained according to the skin parameters and the mapping relationship, thereby implementing a variety of functions of the radio frequency cosmetic apparatus.
According to the radio frequency beauty instrument provided by the embodiment of the invention, the target frequency waveform corresponding to the skin parameter is determined according to the skin parameter of the user, two complementary PWM waveforms with adjustable duty ratio are output through the control module, and the PWM waveforms are converted into the target frequency waveform in a non-isolated mode through the power conversion equipment, so that the output frequency of the radio frequency beauty instrument is adjusted, high-frequency conversion can be realized, multiple functions of the radio frequency beauty instrument are realized, multiple application requirements of the user are met, the radio frequency beauty instrument has better practical value, and the user experience is improved.
In practical application, as shown in fig. 4, the control module 10 outputs two complementary PWM waveforms with adjustable duty ratio, i.e. PWM1And PWM2And PWM is performed1And PWM2Amplified by the driving circuit 20 and transmitted to the power conversion device 30 due to PWM1And PWM2The duty ratio of the RF waveform is adjustable, so that the adjustment of the peak voltage of the target frequency waveform can be realized by adjusting the duty ratio, the problem that the cosmetic instrument generates a pricking feeling and a current burning feeling in the use process due to the fact that the peak voltage of the RF waveform is not adjustable is solved, and the user experience is improved. And all-in-oneThe full bridge circuit in the over-power converting apparatus 30 can realize a high-frequency target frequency waveform, thereby satisfying various application requirements of users. It should be noted that, the control module 10 may be configured by software, so that the control module 10 outputs two complementary PWM waveforms with adjustable duty ratios.
In addition, the radio frequency beauty instrument may also adopt a self-excited oscillation of an analog circuit and a self-frequency selection network to output a high-frequency target frequency waveform, but the method has low efficiency and large volume, and is not convenient for being applied to a household radio frequency beauty instrument.
Further, the rf beauty instrument further includes a power supply module 50, as shown in fig. 5, the power supply module 50 is connected to the control module 10, the driving circuit 20 and the power conversion device 30, respectively, to supply power to the control module 10, the driving circuit 20 and the power conversion device 30.
The power supply module 50 may directly supply power to the control module 10, and when the power supply module supplies power to the driving circuit 20 and the power conversion device 30, the power supply module needs to boost through the boost circuit to supply power, as shown in fig. 6, after the voltage output by the power supply module 50 passes through the first-stage boost circuit 51, a first voltage is obtained, and the driving circuit 20 is supplied with power through the first voltage; and passing the first voltage through a two-stage boost circuit 52 to obtain a second voltage, and supplying power to the power conversion device 30 through the second voltage. Alternatively, the power supply module 50 may be a battery, and the battery is charged by a built-in charging port and a charger to store electric energy.
Further, in practical application, in order to implement high-frequency power, the first input end of the power conversion device 30 is further connected to a first bridge arm driving circuit; the base of a first driving triode in the first bridge arm driving circuit is connected with the output end of the driving circuit, the emitting electrode of the first driving triode is grounded, the collector of the first driving triode is respectively connected with a first inductor, a second resistor and a third resistor, the second resistor is also connected with the base of a second triode, the third resistor is respectively connected with a first diode and the first resistor, the first resistor is also connected with the base of the first triode, the first inductor is also respectively connected with a fourth resistor and a fifth resistor, and the fourth resistor, the fifth resistor and the first diode are also connected with the emitting electrode of the first triode; the second input end is also connected with a second bridge arm driving circuit; the base of a second driving triode in the second bridge arm driving circuit is connected with the output end of the driving circuit, the emitting electrode of the second driving triode is grounded, the collecting electrode of the second driving triode is respectively connected with a second inductor, a seventh resistor and an eighth resistor, the seventh resistor is also connected with the base electrode of a fourth triode, the eighth resistor is respectively connected with a second diode and a sixth resistor, the sixth resistor is also connected with the base electrode of a third triode, the second inductor is also respectively connected with a ninth resistor and a tenth resistor, and the ninth resistor, the tenth resistor and the second diode are also connected with the emitting electrode of the third triode.
For ease of understanding, the first input terminal and the first leg driver circuit are described here as an example. As shown in fig. 7, in the first bridge arm driving circuit, a base of a first driving transistor Q6 is connected to an output terminal of the driving circuit, an emitter of the first driving transistor Q6 is grounded, a collector of the first driving transistor Q6 is connected to a first inductor L1, a second resistor R2 and a third resistor R3, respectively, a second resistor R2 is further connected to a base of the second transistor Q2, the third resistor R3 is connected to a first diode D1 and a first resistor R1, the first resistor R1 is further connected to a base of the first transistor Q1, the first inductor L1 is further connected to a fourth resistor R4 and a fifth resistor R5, and the fourth resistor R4, the fifth resistor R5 and the first diode D1 are also connected to an emitter of the first transistor Q1.
Specifically, when the first input end is pulled to the ground, the first triode can be ensured to be conducted and the second triode can be ensured to be cut off, so that the normal work of the first bridge arm is realized; in practical applications, the PWM waveform amplified by the driving circuit is amplified by the first driving transistor Q6 to further expand the driving capability, when the first driving transistor Q6 is turned on, the first inductor L1 is used to store energy, the first transistor Q1 is turned on, and the second transistor Q2 is turned off; when the first driving transistor Q6 is turned off, the first inductor L1 is used to discharge through the first diode D1, the fourth resistor R4 and the fifth resistor R5, the first transistor Q1 is turned off, and the second transistor Q2 is turned on.
In addition, during the discharging process of the first inductor L1, the released energy also makes the base voltage of the second transistor Q2 greater than the emitter voltage, and the be back voltage damage of the second transistor Q2 is avoided by the clamping voltage of the first diode D1. Wherein the current of the first inductor L1 can be calculated according to the following formula:
Figure BDA0002973891760000101
wherein, I represents a current of the first inductor, VCC represents a supply voltage of the full bridge circuit, VL represents a driving voltage of the first inductor to the first bridge arm, L represents an inductance of the first inductor, R represents a resistance value connected in series with the first inductor, Imax represents a maximum current of the first inductor, and Ton represents a duration time of an increase of the first inductor current. If there are a plurality of resistors connected in series to the first inductor, R is a resistance value corresponding to all the resistors connected in series to the first inductor.
Therefore, the proper size of the first inductor L1 can be selected, so that when the first driving triode Q6 is turned off, the first diode D1 is in a always-on state, and the first triode Q1 is also in a always-off state, and further the full-bridge circuit obtains a high-frequency target frequency waveform according to the PWM waveform conversion, that is, the power conversion device realizes the high-frequency work of the radio frequency beauty instrument through a non-isolation mode, and various application requirements of a user are met. Similarly, for the second input end and the second bridge arm driving circuit, the principle is the same as that of the first input end and the first bridge arm driving circuit, and the detailed description of the embodiment of the invention is omitted here.
Further, the beauty instrument body is further provided with a key module connected with the control module, as shown in fig. 8, the key module includes a switch key unit 61 and a gear key unit 62; as shown in fig. 9, the shift position key unit 62 includes a high-shift position key 621, a middle-shift position key 622, and a low-shift position key 623; if the low-level key 623 can output an RF waveform lower than 3M, the middle-level key 622 can output an RF waveform of 3M, and the high-level key 621 can output an RF waveform higher than 3M; the switch key unit includes a switch key 611, where the switch key 611 may be a movable switch key, or a seesaw key, or a touch key, and the specific form of the switch key may be set according to the actual situation, which is not limited to be described in the embodiment of the present invention.
In addition, a switch indicator light and a gear indicator light are also arranged on the beauty instrument body; the switch indicator lamp is disposed within a preset distance range of the switch key unit, as shown in fig. 8, the switch indicator lamp 612 is disposed below the switch key 611, and the like. The gear indicator lamp is arranged in a preset distance range of the gear key unit and used for indicating gear information when the radio frequency beauty instrument works; the gear indicator lamp comprises a high-gear key indicator lamp, a middle-gear key indicator lamp and a low-gear key indicator lamp, as shown in fig. 9, the gear indicator lamp can be arranged at the right side position of the corresponding gear key, can also be arranged at the position below the corresponding gear key, and the like, and can be specifically arranged according to actual conditions. In practical application, the gear information of the radio frequency beauty instrument during working can be indicated through the corresponding gear key indicator lamp, and if the indicator lamp on the right side of the low-gear key is on, the radio frequency beauty instrument works at the low gear at the moment; the number of the indicator lamps can also be used for indicating the gear information when the radio frequency beauty instrument works, if one indicator lamp is on, the radio frequency beauty instrument works in a low gear, if two indicator lamps are on, the radio frequency beauty instrument works in a medium gear, and if all the indicator lamps are on, the radio frequency beauty instrument works in a high gear.
Further, as shown in fig. 8, the beauty treatment head is provided with a plurality of electrode pads 71, and the plurality of electrode pads 71 are uniformly distributed according to the shape of the beauty treatment head; wherein, the shape of the beauty head is one of the following: the shape of the circle, the ellipse, the heart and the square can be set according to practical situations, and the embodiment of the invention does not limit the description. In practical application, the electrode plate is mostly a gold-plated copper die casting, is connected with the power conversion circuit through a wire, and the outside of the electrode plate is in contact with the skin of a user to play a role in conducting current, so that a first RF waveform or a second RF waveform output by the power conversion circuit acts on the skin of the user through the electrode plate, and the function of the radio frequency beauty instrument is realized.
As shown in fig. 8, a charging interface 81 is provided at the bottom of the beauty instrument body for electrically connecting with the commercial power to charge the radio frequency beauty instrument. In practical application, the interface 81 that charges can be the TYPE-C interface that charges to through standard 5V charger and mains connection, thereby realize the charging to the cosmetic appearance of radio frequency.
Further, as shown in fig. 10, the beauty instrument body is further provided with a breathing horse race lamp 91 for indicating the working state of the radio frequency beauty instrument; that is, in practical application, when the rf beauty instrument is in operation, the breathing horse race lamp 91 displays the breathing horse race mode, for example, horse race breathing is turned on at a frequency of 0.5Hz, so that the appearance effect of the rf beauty instrument is increased, and the user's interest in using the rf beauty instrument is increased.
And the radio frequency beauty instrument also comprises a base, and a groove matched with the bottom shape of the beauty instrument body is arranged on the base. In practical application, for the convenience of customers uses the radio frequency beauty instrument, the beauty instrument body mostly sets up the shape of being convenient for to hold, consequently, the shape of recess on the base only need with the bottom shape of beauty instrument body identical can to when the radio frequency beauty instrument does not use, can place on the base steadily, the user of being convenient for accomodates, thereby improved user's experience degree.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A power conversion device, characterized in that the power conversion device is applied to a radio frequency beauty instrument; the power conversion equipment comprises a full-bridge circuit, an input interface and an output interface, wherein the input interface and the output interface are connected with the full-bridge circuit;
the full-bridge circuit is used for acquiring the PWM waveform output by the control module in the radio frequency beauty instrument through the input interface, converting the PWM waveform into a target frequency waveform, and outputting the target frequency waveform through the output interface.
2. The power conversion apparatus of claim 1, wherein the full bridge circuit comprises complementary first and second legs, the input interface comprises first and second input terminals, and the output interface comprises first and second output terminals;
the first bridge arm is respectively connected with the first input end and the first output end, the second bridge arm is respectively connected with the second input end and the second output end, the first input end is complementary with the second input end, and the first output end is complementary with the second output end.
3. The power conversion apparatus of claim 2, wherein the first leg comprises a first transistor and a second transistor, and the second leg comprises a third transistor and a fourth transistor; the first triode and the third triode are both PNP tubes, and the second triode and the fourth triode are both NPN tubes.
4. A radio frequency cosmetic apparatus, comprising: the beauty instrument comprises a beauty instrument body and a beauty head fixed at the end part of the beauty instrument body; wherein the beauty instrument body is provided with the power conversion device of any one of claims 1 to 3, and a control module and a drive circuit, the control module, the drive circuit and the power conversion device being connected in sequence, the power conversion device being further connected to the beauty head;
the beauty head is provided with an acquisition module connected with the control module and used for acquiring skin parameters and sending the skin parameters to the control module; wherein the skin parameters comprise skin humidity parameters and/or skin temperature parameters;
the control module is pre-stored with the mapping relation between the skin parameters and the frequency waveforms;
the control module is used for receiving the skin parameters and reading the received target frequency waveform corresponding to the skin parameters from the mapping relation; and outputting two complementary PWM waveforms with adjustable duty ratios corresponding to the target frequency waveform, and transmitting the PWM waveforms to the power conversion equipment through the driving circuit, so that the power conversion equipment converts the PWM waveforms into the target frequency waveform, and the target frequency waveform acts on the skin through the beauty treatment head.
5. The radiofrequency cosmetic instrument of claim 4, further comprising a power supply module connected to the control module, the drive circuit, and the power conversion device;
the power supply module is used for supplying power to the control module, the driving circuit and the power conversion equipment.
6. The radio frequency beauty instrument of claim 4, characterized in that the beauty instrument body is further provided with a key module connected with the control module, the key module comprises a switch key unit and a gear key unit; the gear button unit comprises a high-gear button, a middle-gear button and a low-gear button.
7. The radio frequency beauty instrument of claim 6, characterized in that the beauty instrument body is further provided with a gear indicator light and a breathing horse race light;
the gear indicator lamp is arranged in a preset distance range of the gear key unit and used for indicating gear information when the radio frequency beauty instrument works;
the breathing horse race lamp is used for indicating the working state of the radio frequency beauty instrument.
8. The radio frequency beauty instrument according to claim 4, wherein a plurality of electrode pads are provided on the beauty head, and the plurality of electrode pads are uniformly distributed according to the shape of the beauty head; wherein the shape of the beauty head is one of the following: circular, oval, heart-shaped, and square.
9. The radio frequency beauty instrument of claim 4, wherein the bottom of the beauty instrument body is provided with a charging interface for electrically connecting with the mains supply to charge the radio frequency beauty instrument.
10. The radio frequency beauty instrument of claim 4, further comprising a base, wherein the base is provided with a groove matching with the shape of the bottom of the beauty instrument body.
CN202110273203.8A 2021-03-12 2021-03-12 Power conversion equipment and radio frequency beauty instrument Pending CN112870567A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202110273203.8A CN112870567A (en) 2021-03-12 2021-03-12 Power conversion equipment and radio frequency beauty instrument

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CN202110273203.8A Pending CN112870567A (en) 2021-03-12 2021-03-12 Power conversion equipment and radio frequency beauty instrument

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113517749A (en) * 2021-09-10 2021-10-19 深圳市米谷智能有限公司 Frequency output circuit and beauty instrument with power management chip
WO2024017373A1 (en) * 2022-07-21 2024-01-25 漳州松霖智能家居有限公司 Recognition method for replacing head and beauty instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113517749A (en) * 2021-09-10 2021-10-19 深圳市米谷智能有限公司 Frequency output circuit and beauty instrument with power management chip
WO2024017373A1 (en) * 2022-07-21 2024-01-25 漳州松霖智能家居有限公司 Recognition method for replacing head and beauty instrument

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