CN115001295A - Multi-stage boosting handheld high-frequency electro-therapeutic apparatus and control method thereof - Google Patents

Multi-stage boosting handheld high-frequency electro-therapeutic apparatus and control method thereof Download PDF

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Publication number
CN115001295A
CN115001295A CN202210764967.1A CN202210764967A CN115001295A CN 115001295 A CN115001295 A CN 115001295A CN 202210764967 A CN202210764967 A CN 202210764967A CN 115001295 A CN115001295 A CN 115001295A
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boosting
voltage
control
duty ratio
switch tube
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CN202210764967.1A
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郭荣
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Individual
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Priority to CN202210764967.1A priority Critical patent/CN115001295A/en
Priority to PCT/CN2022/112411 priority patent/WO2024000752A1/en
Publication of CN115001295A publication Critical patent/CN115001295A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0095—Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buck
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (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)
  • Heart & Thoracic Surgery (AREA)
  • Neurology (AREA)
  • Electrotherapy Devices (AREA)

Abstract

The invention discloses a multi-stage boosting handheld high-frequency electro-therapeutic apparatus and a control method thereof, and relates to the field of beauty instruments. The power supply module with lower voltage is configured in the high-frequency electro-therapeutic apparatus, and the control of the control panel supplies power to the boosting module, so that the possibility that the high voltage output by the boosting module affects the control panel and threatens the operation safety of a user on the control panel is avoided, and the safety and the convenience of the high-frequency electro-therapeutic apparatus in handheld use are improved. Because the multistage boosting structure is configured, the danger caused by one-time voltage sudden rise can be avoided, the low voltage is boosted to the voltage level required by the second boosting unit through the first boosting plate, and then the voltage is boosted to the high voltage level through the second boosting unit, the performance requirements and the design difficulty of circuit elements are reduced while the boosting circuit is simplified, the production difficulty, the maintenance difficulty and the production cost of the circuit are reduced, the threat of the high voltage to the operation of a user is further avoided, and the safety of the handheld use of the user is guaranteed.

Description

Multi-stage boosting handheld high-frequency electro-therapeutic apparatus and control method thereof
Technical Field
The invention relates to the field of beauty instruments, in particular to a multi-stage boosting handheld high-frequency electro-therapeutic apparatus and a control method thereof.
Background
The high-frequency electro-therapeutic apparatus is applied to skin sterilization, acne mark improvement, wrinkle improvement, acne inhibition and the like, and has remarkable effects. The high frequency is utilized to vibrate water molecules in deep skin tissues, and the thermal energy generated by the vibration of the water molecules promotes the regeneration of skin collagen, thereby achieving the purpose of reducing fat.
In the prior art, the high-frequency electro-therapeutic apparatus is usually plugged into a power supply socket through a plug wire, and domestic electricity alternating current is adopted for direct power supply. And because high frequency electro-therapeutic apparatus generally need handheld removal in the use, the plug cord security is not enough in use, and the connecting wire causes the restriction to the removal in the user's use easily simultaneously. In order to solve the problem, some prior arts propose to configure a boost assembly and a circuit control board structure in a product, and control power supply start, voltage regulation and current regulation through one circuit board.
However, the inventor finds that the technical scheme in the prior art still has great potential safety hazard in long-term practice, and at least has the following problems:
1. in the prior art, the voltage needs to be instantly boosted to 10kv-15kv from the charger plug to the 3-5V voltage, and when the 3-5V voltage of the plug is directly transmitted to the high-voltage package through the direct-current driving plate for boosting, the conventional boosting module is difficult to realize voltage jump, so that the design and production cost of the boosting module is improved;
2. the voltage is instantaneously increased by a large margin, the conditions such as instantaneous overheating and short circuit of the boosting module are easily caused, and great potential safety hazards exist.
Disclosure of Invention
The handheld high-frequency electro-therapeutic apparatus with multi-stage boosting and the control method thereof provided by the embodiment of the invention can improve the handheld use convenience and safety of the high-frequency electro-therapeutic apparatus, and ensure the handheld use safety of a user while ensuring the supply of sufficient voltage by a multi-stage boosting mode aiming at the condition that the performance of the high-frequency electro-therapeutic apparatus is limited under the handheld application environment.
The handheld high-frequency electrotherapy instrument with multi-stage boosting provided by the first embodiment of the invention comprises an electrotherapy instrument body, a power supply module, a control panel and a boosting module;
the power supply module is used for supplying power to the boosting module through the control board;
the control board is used for outputting a control signal to the boosting module; wherein the first control signal is a PWM signal; the boosting module comprises a first boosting plate and a second boosting unit; the first boosting plate is provided with a first control end for receiving the first control signal, a first input end for connecting input voltage, and a first output interface for connecting the second boosting unit; the second boosting unit is provided with a second input interface connected with the first output interface and a second output interface used for outputting high voltage required by the electro-therapeutic apparatus body;
the first voltage boosting plate comprises a first capacitor, a first resistor, a first transformer, a first switch tube, a first diode, a second capacitor, a second diode, a second resistor, a third resistor and a second switch tube; the first end of the first capacitor is connected with the first input end, and the second end of the first capacitor is grounded; the first end of the first resistor is connected with the first control end, and the second end of the first resistor is grounded; a first end of a low-voltage side of the first transformer is connected with a first end of the first capacitor, a second end of the low-voltage side of the first transformer is grounded through the first switch tube, a first end of a high-voltage side of the first transformer is connected to the first output interface through the first diode, and a second end of the high-voltage side of the first transformer is connected to the first output interface through the second diode; the control end of the first switch tube is connected with the first end of the first resistor, and the second end of the low-voltage side of the first transformer is grounded when the first switch tube is conducted; a first end of the first diode is connected with a first end of the high-voltage side of the first transformer, a second end of the first diode is connected with the first output interface, and the first diode positively conducts current from the first end of the high-voltage side of the first transformer to the first output interface; the first end of the second capacitor is connected with the second end, and the second end of the second capacitor is connected with the second end of the high-voltage side of the first transformer; the second diode is a bidirectional trigger diode, and the control end of the second diode is grounded through the second switch tube; when the second switch tube is conducted, the control end of the second diode is grounded; a first end of the third resistor is connected with the first input end, a second end of the third resistor and a first end of the fourth resistor are both connected with a second end of the high-voltage side of the first transformer, and a second end of the fourth resistor is connected with a control end of the second diode;
the second boosting unit comprises a second transformer, the low-voltage side of the second transformer is connected with the first output interface, and the high-voltage side of the second transformer is connected with the second output interface.
As an improvement of the above scheme, the power module outputs a direct current low voltage to the first input end through the control board; the direct current low voltage is 3.6V; the second boosting unit is a high-voltage pack.
As an improvement of the above scheme, the control board comprises a power management unit for connecting the power module; the power management unit is connected with the power module through a power interface and is used for supplying power to the first input end.
As an improvement of the above scheme, the first switch tube is an enhancement type field effect tube; the control end of the first switch tube is a grid electrode, the source electrode of the first switch tube is grounded, and the drain electrode of the first switch tube is connected with the second end of the low-voltage side of the first transformer;
the second switch tube is a triode; the control end of the second switch tube is a base electrode, the emitting electrode of the second switch tube is grounded, and the collector electrode of the second switch tube is connected with the control end of the second diode.
As an improvement of the above scheme, the control board is further configured to output a second control signal; and the control end of the second switch tube is used for receiving the second control signal, and the second control signal is used for controlling the on-off of the second switch tube.
As an improvement of the above scheme, the control board includes an input unit further configured to receive an interactive input, and the control board adjusts the output first control signal according to the received interactive input;
the input unit is a key array; and the control board adjusts the duty ratio of the first control signal according to the interactive input.
As an improvement of the above, the adjusting the duty ratio of the first control signal includes:
adjusting the duty cycle to one of a plurality of preset duty cycles according to the first control signal;
after the control board controls the power module to start outputting the dc low voltage to the first input terminal, the method further includes:
and the control board outputs a corresponding control signal according to the lowest duty ratio in the preset duty ratios.
As an improvement of the above scheme, the output voltage of the first output interface is 200-300V; the output voltage of the second output interface is 10-15 kV.
A control method of a handheld high-frequency electrotherapy instrument with multi-stage boosting provided by a second embodiment of the present invention is suitable for any one of the above high-frequency electrotherapy instruments, and is characterized by including the steps of:
the power supply module supplies power to the control panel and supplies power to a first boosting plate of the boosting module through the control panel;
the control panel acquires interactive input of a user;
the control board adjusts the duty ratio of a first control signal according to the interactive input; wherein the first control signal is a PWM signal;
the first boosting plate outputs a first-stage boosting voltage to the second boosting unit according to the first control signal;
and the second boosting unit outputs a second-stage boosting high voltage according to the first-stage boosting voltage.
As an improvement of the above scheme, the interactive input includes a start-stop signal and a gear adjustment signal; the start-stop signal is used for starting the power supply of the power supply module; the start-stop signal is further used for adjusting the duty ratio of the first control signal to be the minimum value of a plurality of preset duty ratios;
the gear adjusting signals comprise gear up-adjusting signals and gear down-adjusting signals;
the gear up-regulation signal is used for regulating the duty ratio of the first control signal to the preset duty ratio which is larger than the current duty ratio and has the smallest difference with the current duty ratio; when the current duty ratio is the maximum value of the preset duty ratios, the gear up-regulation signal is also used for maintaining the current duty ratio unchanged;
the gear down-regulation signal is used for regulating the duty ratio of the first control signal to the preset duty ratio which is smaller than the current duty ratio and has the smallest difference with the current duty ratio; when the current duty ratio is the minimum value of the preset duty ratios, the gear down-regulation signal is also used for maintaining the current duty ratio unchanged.
On one hand, the handheld high-frequency electrotherapy instrument with multi-stage boosting and the control method thereof provided by the embodiment of the invention have the advantages that the power supply module with lower voltage is configured in the high-frequency electrotherapy instrument, and the boosting module is supplied with power under the control of the control panel, so that the possibility that the high voltage output by the boosting module affects the control panel and threatens the operation safety of a user on the control panel is avoided, and the safety and the convenience of the high-frequency electrotherapy instrument in handheld use are improved; on the other hand, because the boosting module is provided with a multi-stage boosting structure of the first boosting plate and the second boosting unit, the danger caused by one-time voltage sudden boosting can be avoided, the low voltage is boosted to the voltage level required by the second boosting unit through the first boosting plate, and then the voltage is boosted to the high voltage level required by the high-frequency electrotherapy instrument through the second boosting unit.
Drawings
FIG. 1 is a schematic diagram of a multi-stage voltage-boosting handheld high-frequency electro-therapeutic apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic block diagram of a high-frequency electrotherapy apparatus according to a first embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a boosting module of the high-frequency electro-therapeutic apparatus according to the first embodiment of the present invention;
fig. 4 is a schematic flow chart of a control method of the high-frequency electro-therapeutic apparatus according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention provides a handheld high-frequency electrotherapy instrument with multi-stage boosting. Referring to fig. 1 to 2, the multi-stage boosting handheld high-frequency electrotherapy apparatus 100 may include an electrotherapy apparatus body 110, a power supply module 120, a control board 130 and a boosting module 140.
For example, the power module 120, the control board 130, and the voltage boosting module 140 may be disposed inside the electro-therapeutic apparatus body 110; or in the case that the control panel 130 is further configured with an interaction unit for interacting with a user, the circuit of the control panel 130 may be disposed inside the electro-therapeutic apparatus body 110, and the interaction unit may be exposed on the surface or outside of the electro-therapeutic apparatus body 110 as required, which does not affect the beneficial effects of the present invention.
The power module 120 is configured to supply power to the voltage boosting module 140 through the control board 130.
The control board 130 is configured to output a first control signal to the voltage boosting module 140. Wherein the first control signal is a PWM signal. Preferably, the control board 130 includes a power management unit for connecting the power module 120; the power management unit is connected to the power module 120 through a power interface, and the power management unit is configured to supply power to the first input terminal IN 1. By configuring the control function and the boosting function to the control board 130 and the boosting module 140, respectively, the risk of high voltage electric shock due to simultaneous control and boosting on the same circuit board is avoided.
Through dispose power module in high frequency electro-therapeutic apparatus for the high frequency electro-therapeutic apparatus need not disturbed by the electric wire of power supply in handheld use, has improved the convenience that the user used, and avoided the plug to drop, the emergence of accident such as mistake touching, improved the security of using. Meanwhile, the voltage of the power supply module is low, and the power supply module supplies power to the boosting module under the control of the control panel, so that the possibility that the high voltage output by the boosting module affects the control panel and even threatens the operation safety of a user on the control panel is eliminated, and the safety of the high-frequency electro-therapeutic apparatus in handheld use is improved.
The boosting module 140 includes a first boosting plate and a second boosting unit. The first voltage boosting plate is provided with a first control end CT1 for receiving the first control signal, a first input end IN1 for connecting input voltage, and a first output interface OUT1 for connecting the second voltage boosting unit; the second voltage boosting unit is provided with a second input interface IN2 connected with the first output interface OUT1, and a second output interface OUT2 for outputting the high voltage required by the electro-therapeutic apparatus body 110.
Referring to fig. 3, a circuit diagram of the boosting module 140 is shown. The first boost plate comprises a first capacitor C1, a first resistor R1, a first transformer T1, a first switch tube Q1, a first diode D1, a second capacitor C2, a second diode D2, a second resistor R2, a third resistor R3 and a second switch tube T2. The second boosting unit includes a second transformer T2.
A first end of the first capacitor C1 is connected to the first input terminal IN1, and a second end of the first capacitor C1 is grounded; a first end of the first resistor R1 is connected to the first control terminal CT1, and a second end of the first resistor R1 is grounded; a first terminal of a low voltage side of the first transformer T1 is connected to a first terminal of the first capacitor C1, a second terminal of a low voltage side of the first transformer T1 is grounded through the first switch tube Q1, a first terminal of a high voltage side of the first transformer T1 is connected to the first output interface OUT1 through the first diode D16, and a second terminal of a high voltage side of the first transformer T1 is connected to the first output interface OUT1 through the second diode D2; the control end of the first switch tube Q1 is connected with the first end of the first resistor R1, and the second end of the low-voltage side of the first transformer T1 is grounded when the first switch tube Q1 is conducted; a first terminal of the first diode D1 is connected to a first terminal of the high-voltage side of the first transformer T1, a second terminal of the first diode D1 is connected to the first output interface OUT1, and the first diode D1 forward conducts the current from the first terminal of the high-voltage side of the first transformer T1 to the first output interface OUT 1; the first end of the second capacitor is connected with the second end, and the second end of the second capacitor is connected with the second end of the high-voltage side of the first transformer T1; the second diode D2 is a diac, and the control terminal of the second diode D2 is grounded through the second switch tube Q2; when the second switch tube Q2 is turned on, the control terminal of the second diode D2 is grounded; a first end of the third resistor R3 is connected to the first input terminal IN1, a second end of the third resistor R3 and a first end of the fourth resistor are both connected to a second end of the high-voltage side of the first transformer T1, and a second end of the fourth resistor is connected to a control terminal of the second diode D2. The first boost board comprises a boost circuit formed by the above circuit elements, and the voltage output at the first output interface OUT1 can be adjusted by adjusting the duty ratio of the control signal input at the first control terminal CT 1.
When the control board 130 inputs a PWM signal to the control terminal of the first switch tube Q1, the second capacitor starts to charge and the voltage value across the second capacitor increases, the voltage value is determined by the duty ratio of the PWM signal input to the control terminal of the first switch tube Q1 and the charging time of the second capacitor, and when the charging time is determined, the voltage of the second capacitor can be adjusted according to the duty ratio of the PWM signal input to the control terminal of the first switch tube Q1, so as to adjust the output voltage of the first output interface OUT 1.
The power module 120 outputs the low dc voltage to the first input terminal IN1 through the control board 130, and the low dc voltage is boosted by the first boost board, so that the first output interface OUT1 outputs the voltage value required by the second boost unit. Specifically, the dc low voltage may be 3.6V, and the voltage value required by the second voltage boost unit may be one of a plurality of preset voltage values within the interval of 200-300V.
The low-voltage side of the second transformer T2 of the second boosting unit is connected to the first output interface OUT1, and the high-voltage side of the second transformer T2 is connected to the second output interface OUT 2. The second boost unit boosts the voltage output by the first output interface OUT1 to a high voltage required by the high frequency electro-therapeutic apparatus through the second transformer T2, and outputs the boosted voltage through the second output interface OUT 2. Preferably, the output voltage of the second output interface OUT2 is one of a plurality of preset voltage values within the interval of 10-15 kV. As a possible implementation manner in practical application, the second boosting unit may be a high voltage packet.
Preferably, the first switching tube Q1 may be an enhancement mode fet. The control terminal of the first switch transistor Q1 is a gate, the source of the first switch transistor Q1 is grounded, and the drain of the first switch transistor Q1 is connected to the second terminal of the low-voltage side of the first transformer T1. Therefore, the response speed of the first switching tube Q1 to the PWM signal is improved, and the control precision of the boost circuit is further optimized.
Preferably, the second switch tube Q2 may be a triode. The control end of the second switch tube Q2 is a base electrode, the emitter electrode of the second switch tube Q2 is grounded, and the collector electrode of the second switch tube Q2 is connected to the control end CT2 of the second diode D2. The control board 130 may further be configured to output a second control signal, and the control end of the second switch tube Q2 is configured to receive the second control signal, where the second control signal is used to control on/off of the second switch tube Q2. Therefore, a second control signal is output by the control board 130 to control the on/off of the second switching tube Q2, thereby realizing indirect control of the second diode D2. The situation that the voltage of the second diode D2 is large and the use safety of a user is threatened under the condition that the second diode D2 is directly controlled is avoided.
Further, the control board 130 includes an input unit for receiving an interactive input. The control board 130 adjusts the output first control signal according to the received interaction input. More specifically, the input unit may be a key array, and the control board 130 adjusts the duty ratio of the first control signal according to the interactive input, for example, a key operation of a user at the input unit.
Further, for adjusting the duty ratio of the first control signal, the duty ratio may be adjusted to one of a plurality of preset duty ratios according to the first control signal by configuring a plurality of preset duty ratios in advance. As a possible implementation manner in practical application, a plurality of gears may be preconfigured, each gear corresponds to a different preset duty cycle, and the duty cycle is adjusted to the preset duty cycle corresponding to the corresponding gear according to the gear pointed by the first control signal, specifically, the gear may be directly input by a user or the gear may be gradually increased.
To further enhance the safety, after the control board 130 controls the power module 120 to start outputting the dc low voltage to the first input terminal IN1, the control board 130 outputs a corresponding control signal according to the lowest duty ratio of the preset duty ratios. Therefore, the high-frequency electro-therapeutic apparatus enters a lowest voltage gear after being started, and the damage to a user or equipment caused by instantaneous boosting is avoided.
The operation of the high-frequency electro-therapeutic apparatus will be described with reference to the preferred embodiments. The user operates the control board 130 to enable the control board 130 to start the power supply from the power module 120 to the voltage boosting module 140, and the control board 130 outputs a first control signal to the voltage boosting module 140 according to the preset duty ratio of the lowest gear. The boost module 140 is powered by the power module 120, and the first boost plate receives the first control signal. The on-off of the first switch tube Q1 of the first boost plate controls the charging and discharging of the first capacitor C1 to form the input of the low-voltage side of the first transformer T1, and the high-voltage side of the first transformer T1 outputs 200-300V ac voltage and outputs 8V ac voltage to the second boost unit through the first output interface OUT 1. The second voltage boosting unit inputs the output voltage of the first output interface OUT1 through the second input interface IN2, and outputs the high voltage required by the electrotherapy instrument body 110 through the point output interface through the second transformer T2.
In this process, the user may also operate through the interaction unit of the control board 130, for example, gradually increase the gear by pressing a key, so that the control board 130 outputs a PWM signal with a preset duty ratio corresponding to the gear, and the boost module 140 outputs a high voltage corresponding to the gear at the second output interface OUT 2.
On one hand, the handheld high-frequency electrotherapy instrument with multi-stage boosting provided by the first embodiment of the invention has the advantages that the power supply module with lower voltage is configured in the high-frequency electrotherapy instrument, and the boosting module is supplied with power under the control of the control panel, so that the possibility that the high voltage output by the boosting module affects the control panel and threatens the operation safety of a user on the control panel is eliminated, and the safety and the convenience of the high-frequency electrotherapy instrument in handheld use are improved; on the other hand, because the boosting module is provided with a multi-stage boosting structure of the first boosting plate and the second boosting unit, the danger caused by one-time voltage boosting can be avoided, the low voltage is boosted to the voltage level required by the second boosting unit through the first boosting plate, and then the voltage is boosted to the high voltage level required by the high-frequency electro-therapeutic apparatus through the second boosting unit.
The second embodiment of the invention provides a control method of a handheld high-frequency electrotherapy instrument with multi-stage boosting, which is suitable for the high-frequency electrotherapy instrument disclosed in the first embodiment and the preferred embodiment thereof. Referring to fig. 4, the control method includes steps S110 to S150.
S110, the power supply module supplies power to the control board and supplies power to a first boosting board of the boosting module through the control board.
And S120, the control panel acquires the interactive input of the user.
And S130, the control board adjusts the duty ratio of the first control signal according to the interactive input. Wherein the first control signal is a PWM signal.
Specifically, the interactive input comprises a start-stop signal and a gear adjustment signal. The start-stop signal is used for starting the power supply of the power module. In order to obtain better safety, the start-stop signal can be used for adjusting the duty ratio of the first control signal to be the minimum value of a plurality of preset duty ratios, so that the high-frequency electro-therapeutic apparatus firstly enters the voltage operation of the lowest gear after being started, the electric shock hazard of a user is reduced, and equipment is protected. It is to be understood that, for the start-stop signal, the power supply process of step S110 may be performed after the start-stop signal is acquired.
More specifically, the gear adjustment signal may be used to adjust the gear by directly setting the target gear, or by adjusting the target gear step by step, or by skipping steps. Preferably, the gear adjusting signal may include a gear up-shift signal and a gear down-shift signal. The gear up-regulation signal is used for regulating the duty ratio of the first control signal to the preset duty ratio which is larger than the current duty ratio and has the minimum difference with the current duty ratio. And when the current duty ratio is the maximum value of the preset duty ratios, the gear up-regulation signal is also used for maintaining the current duty ratio unchanged.
The gear down-regulation signal is used for regulating the duty ratio of the first control signal to the preset duty ratio which is smaller than the current duty ratio and has the smallest difference with the current duty ratio. When the current duty ratio is the minimum value of the preset duty ratios, the gear down-regulation signal is also used for maintaining the current duty ratio unchanged.
And S140, the first boosting plate outputs a first-stage boosting voltage to the second boosting unit according to the first control signal. And S150, the second boosting unit outputs a second-stage boosting high voltage according to the first-stage boosting voltage.
It can be understood that, the operation process of the control method may refer to the use process of the high-frequency electro-therapeutic apparatus in the first embodiment, which is not described herein again.
On the one hand, by configuring a power module with lower voltage in the high-frequency electrotherapy instrument and supplying power to the boosting module through the control of the control panel, the possibility that the high voltage output by the boosting module affects the control panel and threatens the operation safety of a user on the control panel is eliminated, and the safety and the convenience of the high-frequency electrotherapy instrument in handheld use are improved; on the other hand, because the boosting module is provided with a multi-stage boosting structure of the first boosting plate and the second boosting unit, the danger caused by one-time voltage sudden boosting can be avoided, the low voltage is boosted to the voltage level required by the second boosting unit through the first boosting plate, and then the voltage is boosted to the high voltage level required by the high-frequency electrotherapy instrument through the second boosting unit.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A multi-stage boosting handheld high-frequency electro-therapeutic apparatus is characterized by comprising an electro-therapeutic apparatus body, a power module, a control panel and a boosting module;
the power supply module is used for supplying power to the boosting module through the control board;
the control board is used for outputting a first control signal to the boosting module; wherein the first control signal is a PWM signal;
the boosting module comprises a first boosting plate and a second boosting unit; the first booster plate is provided with a first control end for receiving the first control signal, a first input end for connecting input voltage and a first output interface for connecting the second booster unit; the second boosting unit is provided with a second input interface connected with the first output interface and a second output interface used for outputting high voltage required by the electro-therapeutic apparatus body;
the first voltage boosting plate comprises a first capacitor, a first resistor, a first transformer, a first switch tube, a first diode, a second capacitor, a second diode, a second resistor, a third resistor and a second switch tube; the first end of the first capacitor is connected with the first input end, and the second end of the first capacitor is grounded; the first end of the first resistor is connected with the first control end, and the second end of the first resistor is grounded; the first end of the low-voltage side of the first transformer is connected with the first end of the first capacitor, the second end of the low-voltage side of the first transformer is grounded through the first switch tube, the first end of the high-voltage side of the first transformer is connected to the first output interface through the first diode, and the second end of the high-voltage side of the first transformer is connected to the first output interface through the second diode; the control end of the first switch tube is connected with the first end of the first resistor, and the second end of the low-voltage side of the first transformer is grounded when the first switch tube is conducted; a first end of the first diode is connected with a first end of the high-voltage side of the first transformer, a second end of the first diode is connected with the first output interface, and the first diode positively conducts current from the first end of the high-voltage side of the first transformer to the first output interface; the first end of the second capacitor is connected with the second end, and the second end of the second capacitor is connected with the second end of the high-voltage side of the first transformer; the second diode is a bidirectional trigger diode, and the control end of the second diode is grounded through the second switch tube; when the second switch tube is conducted, the control end of the second diode is grounded; a first end of the third resistor is connected with the first input end, a second end of the third resistor and a first end of the fourth resistor are both connected with a second end of the high-voltage side of the first transformer, and a second end of the fourth resistor is connected with a control end of the second diode;
the second boosting unit comprises a second transformer, the low-voltage side of the second transformer is connected with the first output interface, and the high-voltage side of the second transformer is connected with the second output interface.
2. The high frequency electrotherapy apparatus according to claim 1, wherein said power module outputs a low dc voltage to said first input terminal via said control board; the direct current low voltage is 3.6V; the second boosting unit is a high-voltage pack.
3. The high frequency electrotherapy of claim 2, wherein said control panel comprises a power management unit for connection to said power module; the power management unit is connected with the power module through a power interface and is used for supplying power to the first input end.
4. The high frequency electrotherapy of claim 1, wherein said first switching tube is an enhancement mode field effect transistor; the control end of the first switch tube is a grid electrode, the source electrode of the first switch tube is grounded, and the drain electrode of the first switch tube is connected with the second end of the low-voltage side of the first transformer;
the second switch tube is a triode; the control end of the second switch tube is a base electrode, the emitting electrode of the second switch tube is grounded, and the collector electrode of the second switch tube is connected with the control end of the second diode.
5. The high frequency electrotherapy of claim 1, wherein said control panel is further configured to output a second control signal; and the control end of the second switch tube is used for receiving the second control signal, and the second control signal is used for controlling the on-off of the second switch tube.
6. The high cycle electrotherapy device according to claim 5, wherein said control board includes an input unit further configured to receive an interactive input, said control board adjusting said output of said first control signal according to said received interactive input; the input unit is a key array; and the control board adjusts the duty ratio of the first control signal according to the interactive input.
7. The high cycle electrotherapy of claim 6, wherein said adjusting the duty cycle of said first control signal comprises:
adjusting the duty cycle to one of a plurality of preset duty cycles according to the first control signal;
after the control board controls the power module to start outputting the dc low voltage to the first input terminal, the method further includes:
and the control board outputs a corresponding control signal according to the lowest duty ratio in the preset duty ratios.
8. The high frequency electro-therapeutic apparatus of claim 6, wherein the output voltage of the first output interface is 200-300V; the output voltage of the second output interface is 10-15 kV.
9. A method for controlling a multi-stage boosting handheld high-frequency electro-therapeutic apparatus, which is suitable for the high-frequency electro-therapeutic apparatus as claimed in any one of claims 1 to 8, and comprises the steps of:
the power supply module supplies power to the control panel and supplies power to a first boosting plate of the boosting module through the control panel;
the control panel acquires interactive input of a user;
the control board adjusts the duty ratio of a first control signal according to the interactive input; wherein the first control signal is a PWM signal;
the first booster plate outputs a first-stage boosting voltage to the second boosting unit according to the first control signal;
and the second boosting unit outputs a second-stage boosting high voltage according to the first-stage boosting voltage.
10. The control method of claim 9, wherein the interactive inputs include start-stop signals and gear adjustment signals; the start-stop signal is used for starting the power supply of the power supply module; the start-stop signal is further used for adjusting the duty ratio of the first control signal to the minimum value of a plurality of preset duty ratios;
the gear adjusting signals comprise gear up-adjusting signals and gear down-adjusting signals;
the gear up-regulation signal is used for regulating the duty ratio of the first control signal to the preset duty ratio which is larger than the current duty ratio and has the smallest difference with the current duty ratio; when the current duty ratio is the maximum value of the preset duty ratios, the gear up-regulation signal is also used for maintaining the current duty ratio unchanged;
the gear down-regulation signal is used for regulating the duty ratio of the first control signal to the preset duty ratio which is smaller than the current duty ratio and has the smallest difference with the current duty ratio; when the current duty ratio is the minimum value of the preset duty ratios, the gear down-regulation signal is also used for maintaining the current duty ratio unchanged.
CN202210764967.1A 2022-07-01 2022-07-01 Multi-stage boosting handheld high-frequency electro-therapeutic apparatus and control method thereof Pending CN115001295A (en)

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PCT/CN2022/112411 WO2024000752A1 (en) 2022-07-01 2022-08-15 Multi-stage boost handheld high-frequency electro-therapeutic device and control method therefor

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