Micro-current control circuit of skin care equipment and skin care equipment

Abstract

The utility model discloses a microcurrent control circuit of skin care equipment, which comprises an electrode assembly, the electrode assembly comprises a plurality of electrode pairs, a power-on unit at least comprises a first switch module and a second switch module, the first switch module is electrically connected with one electrode pair, and the second switch module is electrically connected with the other electrode pair. The switch control unit is used for controlling the first switch module and the second switch module to work, the output end of the main controller is used for transmitting level signals to the switch control unit, and the control end of the main controller is used for outputting control signals to the switch control unit. And the switch control unit outputs a level signal to the first switch module or the second switch module based on the control signal so as to control the on or off of the corresponding electrode pair. Thus, the switch control unit controls the corresponding first switch module and the second switch module, control over the two electrode pairs is achieved, the structure of the whole control circuit is simplified, and the manufacturing cost is reduced. In addition, the utility model further discloses skin care equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of beautifying equipment, especially relates to a micro - current control circuit of skin care equipment and skin care equipment. BACKGROUND

[0002] By applying micro - current on the skin surface, the microcirculation and metabolism of the skin can be promoted, thereby improving the elasticity and tightness of the skin, and the effect of delaying aging and improving skin quality is achieved.

[0003] In the related art, a plurality of electrodes are arranged in a certain shape (for example, annular, rectangular, etc.) in sequence, and some electrodes are controlled through circuit design to achieve the desired beautifying effect. These electrodes can be dynamically turned on and off through a matching control circuit, thereby forming an adjustable current path.

[0004] However, the existing micro - current control circuit has a complex structure and high cost. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a micro - current control circuit of skin care equipment, which aims to solve the problems of complex structure and high cost of the existing micro - current control circuit.

[0006] To achieve the above-mentioned purpose, the utility model provides a micro - current control circuit of skin care equipment, which comprises:

[0007] An electrode assembly, the electrode assembly comprises a plurality of electrode pairs, and the plurality of electrode pairs are used for outputting micro - current;

[0008] A power supply unit, the power supply unit at least comprises a first switch module and a second switch module, the first switch module is electrically connected with an electrode pair, and the second switch module is electrically connected with another electrode pair;

[0009] A switch control unit, the switch control unit is electrically connected with the first switch module and the second switch module, and is used for controlling the first switch module and the second switch module to work respectively;

[0010] A main controller, the output end and the control end of the main controller are electrically connected with the switch control unit, the output end of the main controller is used for transmitting a level signal to the switch control unit, the control end of the main controller is used for outputting a control signal to the switch control unit, and the switch control unit outputs the level signal to the first switch module or the second switch module based on the control signal, so that the first switch module and the second switch module control the conduction or turn-off of the electrode pair connected with each other.

[0011] In some embodiments, the switch control unit comprises a first control device, the first control device is electrically connected with the first switch module and the second switch module, the first control device outputs a level signal to the first switch module or the second switch module based on the control signal of the main controller, and the first switch module and the second switch module control the conduction or shutdown of the electrode pairs connected thereto.

[0012] In some embodiments, the first control device comprises four output ends, the first switch module comprises two trigger ends, and the two trigger ends of the first switch module are electrically connected with two output ends of the first control device; the second switch module comprises two trigger ends, and the two trigger ends of the second switch module are electrically connected with the other two output ends of the first control device.

[0013] In some embodiments, the first switch module comprises two first half-bridge circuits, and the two first half-bridge circuits are respectively electrically connected with the two trigger ends of the first switch module.

[0014] The second switch module comprises two second half-bridge circuits, and the two second half-bridge circuits are respectively electrically connected with the two trigger ends of the second switch module.

[0015] In some embodiments, when the first control device sends a level signal to the two trigger ends of the first switch module, the two first half-bridge circuits form a loop in cooperation; and when the first control device sends a level signal to the two trigger ends of the second switch module, the two second half-bridge circuits form a loop in cooperation.

[0016] In some embodiments, each of the first half-bridge circuits comprises a first control connection end and a second control connection end, the first control connection end of one of the first half-bridge circuits and the second control connection end of the other first half-bridge circuit are commonly electrically connected with one of the trigger ends of the first switch module, and the second control connection end of one of the first half-bridge circuits and the first control connection end of the other first half-bridge circuit are commonly electrically connected with the other trigger end of the first switch module.

[0017] Each of the second half-bridge circuits comprises a third control connection end and a fourth control connection end, the third control connection end of one of the second half-bridge circuits and the fourth control connection end of the other second half-bridge circuit are commonly electrically connected with one of the trigger ends of the second switch module, and the fourth control connection end of one of the second half-bridge circuits and the third control connection end of the other second half-bridge circuit are commonly electrically connected with the other trigger end of the second switch module.

[0018] In some embodiments, the number of electrode pairs is four, and the first switch module and the second switch module are respectively electrically connected with two of the electrode pairs.

[0019] The power supply unit further comprises a third switch module and a fourth switch module, and the third switch module and the fourth switch module are respectively connected with the other two electrode pairs.

[0020] In some embodiments, the switch control unit further comprises a second control device, the second control device is electrically connected with the third switch module and the fourth switch module, the second control device comprises four output terminals, the third switch module comprises two trigger terminals and is respectively electrically connected with two output terminals of the second control device, and the fourth switch module comprises two trigger terminals and is respectively electrically connected with the other two output terminals of the second control device.

[0021] The second control device outputs a level signal to the third switch module or the fourth switch module based on the control signal of the main controller.

[0022] In some embodiments, the third switch module comprises two third half-bridge circuits, and the two third half-bridge circuits are respectively electrically connected with the two trigger terminals of the third switch module.

[0023] The fourth switch module comprises two fourth half-bridge circuits, and the two fourth half-bridge circuits are respectively electrically connected with the two trigger terminals of the fourth switch module.

[0024] When the second control device sends a level signal to the two trigger terminals of the third switch module, the two third half-bridge circuits form a loop in cooperation, and when the second control device sends a level signal to the two trigger terminals of the fourth switch module, the two fourth half-bridge circuits form a loop in cooperation.

[0025] In some embodiments, each first half-bridge circuit comprises a first switch component and a first switch tube, and the first switch component of one first half-bridge circuit and the first switch tube of another first half-bridge circuit are turned on or turned off based on the level signal of the switch control unit, so that the two first half-bridges form a loop in cooperation.

[0026] Each second half-bridge circuit comprises a second switch component and a second switch tube, and the second switch component of one second half-bridge circuit and the second switch tube of another second half-bridge circuit are turned on or turned off based on the level signal of the switch control unit, so that the two second half-bridge circuits form a loop in cooperation.

[0027] In some embodiments, each of the third half-bridge circuits comprises a third switch component and a third switch tube, and the third switch component of one of the third half-bridge circuits and the third switch tube of another of the third half-bridge circuits are turned on or turned off based on a level signal of the switch control unit, so that the two third half-bridges form a loop in cooperation;

[0028] Each of the fourth half-bridge circuits comprises a fourth switch component and a fourth switch tube, and the fourth switch component of one of the fourth half-bridge circuits and the fourth switch tube of another of the fourth half-bridge circuits are turned on or turned off based on a level signal of the switch control unit, so that the two fourth half-bridge circuits form a loop in cooperation.

[0029] The utility model further proposes a skin care equipment, include:

[0030] The shell forms the cosmetic head at one end;

[0031] The micro-current control circuit of the skin care equipment as in the preceding embodiments, each of the electrodes is at least partially exposed outside the cosmetic head for outputting micro-current to the skin;

[0032] The optical assembly is used for outputting near-infrared light to the skin through the cosmetic head.

[0033] The utility model discloses the beneficial effects in the technical scheme are as follows: through adopting a switch control unit control corresponding first switch module and second switch module, realize the control of four electrodes (i.e. two electrode pairs). In this way, the structure of the whole control circuit has been simplified, and the dependence on components is reduced, thereby effectively reducing the manufacturing cost. Through reasonable control signal design, the switch control unit can selectively turn on or turn off different switch modules, realizing flexible control of the current path. Not only makes the configuration of hardware more economical, but also improves the overall reliability of the equipment, and reduces the probability of failure. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is module electric connection drawing of the micro-current control circuit of the skin care equipment in an embodiment of the utility model;

[0035] Figure 2 It is module electric connection drawing of the micro-current control circuit of the skin care equipment in an embodiment of the utility model;

[0036] Figure 3 It is partial circuit diagram of the micro-current control circuit of the skin care equipment in an embodiment of the utility model;

[0037] Figure 4Part circuit diagram of micro-current control circuit of skin care equipment in one embodiment of the utility model;

[0038] Figure 5 The circuit diagram of the first control device is shown;

[0039] Figure 6 Module electric connection diagram of micro-current control circuit of skin care equipment in another embodiment of the utility model;

[0040] Figure 7 Part circuit diagram of micro-current control circuit of skin care equipment in another embodiment of the utility model;

[0041] Figure 8 Part circuit diagram of micro-current control circuit of skin care equipment in another embodiment of the utility model;

[0042] Figure 9 The circuit diagram of the second control device is shown;

[0043] Figure 10 The arrangement schematic diagram of the electrode pair is shown.

[0044] Explanation of the drawing reference number:

[0045] 200, electrode assembly; 202, electrode pair;

[0046] 300, power supply unit;

[0047] 310, first switch module; 311, first half-bridge circuit; 311a, first switch assembly; Q1, first switch tube;

[0048] 320, second switch module; 321, second half-bridge circuit; 321a, second switch assembly; Q2, second switch tube;

[0049] 330, third switch module; 331, third half-bridge circuit; 331a, third switch assembly; Q3, third switch tube;

[0050] 340, fourth switch module; 341, fourth half-bridge circuit; 341a, fourth switch assembly; Q4, fourth switch tube;

[0051] 400, switch control unit;

[0052] 401, first control device;

[0053] 402, second control device;

[0054] 500, main controller;

[0055] 600, shell; 601, beauty head;

[0056] 602、optical assembly.

[0057] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0058] The schemes in the embodiments of the present application will be clearly and completely described in combination with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments in the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0059] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0060] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element.

[0061] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0062] The skin care device provided in the embodiment is mainly used for skin care, and the skin care can be beauty or treatment. The skin can be the skin of a human body part or the skin of an animal. The skin of the human body part can be the skin of the face, the skin of the hand, the skin of the leg, the skin of the abdomen or the skin of other parts of the human body.

[0063] For reference Figure 1 and Figure 2 The micro-current control circuit of the skin care device provided in the embodiments of the present application comprises:

[0064] The electrode assembly 200 comprises a plurality of electrode pairs 202 for outputting micro-currents;

[0065] The power supply unit 300 comprises at least a first switch module 310 and a second switch module 320, the first switch module 310 is electrically connected to one electrode pair 202, and the second switch module 320 is electrically connected to another electrode pair 202;

[0066] The switch control unit 400 is electrically connected to the first switch module 310 and the second switch module 320, and is used for controlling the first switch module 310 and the second switch module 320 to work respectively;

[0067] The main controller 500 is electrically connected to the switch control unit 400 at the output end and the control end, the output end of the main controller 500 is used for transmitting a level signal to the switch control unit 400, the control end of the main controller 500 is used for outputting a control signal to the switch control unit 400, and the switch control unit 400 outputs the level signal to the first switch module 310 or the second switch module 320 based on the control signal, so that the first switch module 310 and the second switch module 320 control the conduction or the turn-off of the electrode pairs 202 connected thereto.

[0068] In the embodiment, the micro-current control circuit of the skin care device comprises the electrode assembly 200, the power supply unit 300, the switch control unit 400 and the main controller 500.

[0069] The electrode assembly 200 comprises a plurality of electrode pairs 202, each of which is used for outputting micro-currents. The electrode pairs 202 can be made of medical stainless steel or conductive silicone, so as to ensure good contact with the skin and safety. It can be understood that the plurality of electrode pairs 202 can be understood as comprising two pairs and more than two pairs of electrode pairs 202, each pair of electrode pairs comprising two electrodes with opposite polarities, and each electrode comprising at least one contact point arranged on the outer surface of the skin care device for contacting the skin.

[0070] The power supply unit 300 at least includes a first switch module 310 and a second switch module 320, the first switch module 310 is electrically connected with one electrode pair 202, and the second switch module 320 is electrically connected with another electrode pair 202. The first switch module 310 and the second switch module 320 can adopt MOSFET or relay and the like to realize efficient current on-off control. The switch control unit 400 is electrically connected with the first switch module 310 and the second switch module 320, and is used for controlling the working states of the first switch module 310 and the second switch module 320. The switch control unit 400 can be designed by using a microcontroller or an application specific integrated circuit (ASIC) to provide a flexible control mode. The output end and the control end of the main controller 500 are connected with the switch control unit 400, and are used for sending a level signal and a control signal to the switch control unit 400. In the embodiment, one switch control unit 400 can realize the control of four electrodes (namely two electrode pairs 202), and the hardware cost and the circuit design complexity of the system are reduced.

[0071] Specifically, in the working process, the electrode assembly 200, the power supply unit 300, the switch control unit 400 and the main controller 500 are coordinated to realize the accurate control of the micro-current.

[0072] Firstly, the main controller 500 can generate a control signal according to a preset care program, and transmit the control signal to the switch control unit 400. The switch control unit 400 allows the level signal generated by the main controller 500 to be transmitted to the first switch module 310 and the second switch module 320 based on the received control signal, and is used for controlling the working of the first switch module 310 and / or the second switch module 320, so that the electrode pair 202 is connected with the power supply circuit of the power supply, and the micro-current is generated. The generation of the micro-current can be realized by using a constant current source or a special micro-current generator, so as to ensure the stability and consistency of the output current.

[0073] When the control signal reaches the switch control unit 400, the switch control unit 400 decides which switch module needs to work. The level signal is transmitted to the corresponding switch module (the first switch module 310 and / or the second switch module 320) to control the on or off state of the switch module. When the switch module is turned on, the power supply circuit (the circuit for generating the micro-current) is connected with the electrode pair 202, so that the micro-current can flow through the electrode pair 202. The micro-current is delivered to the target skin area to achieve the care effect.

[0074] The generation of the micro-current can be realized by using a constant current source, so as to ensure the stability of the output current, thereby improving the effect and safety in the care process. In addition, the micro-current generator can also be used to provide a current with a specific frequency and intensity, so as to adjust according to the specific needs of the skin.

[0075] Throughout the process, the level signal not only controls the on and off of the switch module, but also realizes the output of micro-current by coordinating the work of different electrode pairs 202. In this way, the micro-current is transmitted to the target skin area through a specific electrode pair 202, thereby realizing the function of skin care. At the same time, the intensity and duration of the micro-current can be adjusted according to different care programs to ensure the best effect for different skin types and care needs.

[0076] In addition, the use of a switch control unit 400 to control two pairs of electrodes, which corresponds to the setting of a switch control element (such as an optocoupler) for each electrode pair 202 to realize the connection and separation of the electrode and the power supply, effectively simplifies the circuit design, reduces the demand for optocouplers and other components, and thus reduces the overall cost of the device. This design not only reduces the hardware complexity, but also reduces the potential failure points, thereby improving the reliability and long-term stability of the device.

[0077] The beneficial effects of the technical scheme of the utility model lie in: by adopting a switch control unit 400 to control the corresponding first switch module 310 and second switch module 320, the control of four electrodes (i.e. two electrode pairs 202) is realized. In this way, the structure of the entire control circuit is simplified, and the dependence on optocouplers and other components is reduced, thereby effectively reducing the manufacturing cost. In addition, the switch control unit 400 can selectively turn on or turn off different switch modules to realize flexible control of the current path.

[0078] Continuing to refer to Figure 2 In this embodiment, the switch control unit 400 includes a first control device 401, which is electrically connected to the first switch module 310 and the second switch module 320. The first control device 401 outputs a level signal to the first switch module 310 or the second switch module 320 based on the control signal of the main controller 500, and the first switch module 310 and the second switch module 320 control the on or off of the electrode pair 202 connected thereto.

[0079] In this embodiment, the first control device 401 can be selected from a microcontroller (MCU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or an SGM48754YTS14G / TR, etc. For example, the SGM48754YTS14G / TR is a high-performance four-channel analog switch chip that can flexibly distribute the control signals from the main controller 500 to different switch modules through its four channels. Each channel can independently control the on and off of the first switch module 310 or the second switch module 320, thereby realizing the management of the micro-current path. This chip has the characteristics of low on-resistance and low leakage current, ensuring the stable transmission of micro-current, and is suitable for precise skin care applications. When selecting a microcontroller, the GPIO (General Purpose Input Output) pins inside can be used to directly control the first switch module 310 and the second switch module 320, achieving flexible current control. If an application-specific integrated circuit (ASIC) is selected, it can be highly customized for this control task, with the advantages of high efficiency and low power consumption. Field-programmable gate arrays (FPGAs) are suitable for situations that require high-speed parallel processing and logical operations, and can provide flexible control solutions in more complex scenarios.

[0080] In the working process of this embodiment, the main controller 500 can first generate a control signal according to the preset care program, which specifies whether the first switch module 310 or the second switch module 320 needs to be turned on. The control signal is transmitted to the first control device 401, which operates based on the control signal, allowing the level signal generated by the main controller 500 to be transmitted to the corresponding switch module.

[0081] Specifically, when the first switch module 310 and / or the second switch module 320 receives the level signal from the first control device 401, the corresponding electrode pair 202 is connected to the power supply circuit, allowing the micro-current to pass through the electrode pair 202 to the target skin area. The first control device 401 has multiple pins that can dynamically distribute level signals to different switch modules based on control signals to achieve flexible control of the electrode pair 202. In this way, by selectively controlling different switch modules, a variety of care modes can be achieved without changing the hardware arrangement.

[0082] To improve control accuracy and response speed, the first control device 401 can include a feedback circuit to monitor the state of the switch module in real time, ensuring the normal on and off of the current path. Feedback signals can be transmitted back to the main controller 500 to make timely adjustments in the event of an abnormal situation. For example, if a switch module fails to turn on as expected, the main controller 500 can adjust the control signal or trigger an alarm to alert the user.

[0083] In the embodiment, the first control device 401 not only improves the flexibility of current control, but also enhances the reliability and safety of the system. Especially, through the cooperation of the feedback circuit, the whole control system can respond to various possible abnormal conditions in time, ensuring the stable operation of the equipment.

[0084] Referring to Figure 2 , Figure 3 , Figure 4 and Figure 5 , in the embodiment, the first control device 401 includes four output terminals, the first switch module 310 includes two trigger terminals, and the two trigger terminals of the first switch module 310 are electrically connected with two output terminals of the first control device 401; the second switch module 320 includes two trigger terminals, and the two trigger terminals of the second switch module 320 are electrically connected with the other two output terminals of the first control device 401.

[0085] In the embodiment, the first control device 401 includes four output terminals, the first switch module 310 includes two trigger terminals, and the two trigger terminals of the first switch module 310 are electrically connected with two output terminals of the first control device 401; the second switch module 320 also includes two trigger terminals, and the two trigger terminals of the second switch module 320 are electrically connected with the other two output terminals of the first control device 401.

[0086] In the embodiment, for the convenience of understanding the embodiment, the four output terminals of the first control device 401 are allocated as EMS-PWMA, EMS-PWMB, EMS-PWMC and EMS-PWMD (corresponding to Figure 5 ). The two trigger terminals of the first switch module 310 are allocated to be electrically connected with the two output terminals EMS-PWMA and EMS-PWMB of the first control device 401 respectively, and the two trigger terminals of the second switch module 320 are allocated to be electrically connected with the two output terminals EMS-PWMC and EMS-PWMD of the first control device 401 respectively. At the same time, the electrode pair 202 is allocated as four electrodes, namely DJP-A, DJP-B, DJP-C and DJP-D, for micro-current output.

[0087] Referring to Figure 3 and Figure 4 , in different time periods, by controlling different switch modules, micro-current control of different electrodes can be realized.

[0088] Specifically, in the first period, the main controller 500 sends a control signal to the first control device 401 when the first switch module 310 is controlled to work. After receiving the control signal, the first control device 401 transmits a level signal through the output ends EMS-PWMA and EMS-PWMB, and the level signal is transmitted to the two trigger ends (corresponding to EMS-PWMA and EMS-PWMB) of the first switch module 310. In this case, the first switch module 310 is triggered, and the two electrodes (DJP-A and DJP-B) connected thereto are turned on with the power supply circuit to form a loop, and a micro-current is output through the electrode pair 202 to realize the micro-current therapy in the skin care process. It can be understood that the level signal transmitted by the output ends EMS-PWMA and EMS-PWMB can be EMS-PWMA high level and EMS-PWMB low level, or EMS-PWMA low level and EMS-PWMB high level, so as to control the current flowing direction through the electrodes DJP-A and DJP-B.

[0089] Specifically, when EMS-PWMA is high level and EMS-PWMB is low level, electrode DJP-A is positive and electrode DJP-B is negative, and the current flows from electrode DJP-A to electrode DJP-B; when EMS-PWMA is low level and EMS-PWMB is high level, DJP-A is negative and DJP-B is positive, and the current flows from electrode DJP-B to electrode DJP-A.

[0090] In the second period, the main controller 500 sends a control signal to the first control device 401 when the second switch module 320 is controlled to work. After receiving the control signal, the first control device 401 transmits a level signal through the output ends EMS-PWMC and EMS-PWMD, and the level signal is transmitted to the two trigger ends (corresponding to EMS-PWMC and EMS-PWMD in the figure) of the second switch module 320. At this time, the second switch module 320 is triggered, and the two electrodes (DJP-C and DJP-D) connected thereto are turned on with the power supply circuit, and a micro-current is output through the electrode pair 202 to continue to complete the work of skin care. It can be understood that the level signal transmitted by the output ends EMS-PWMC and EMS-PWMD can be EMS-PWMC high level and EMS-PWMD low level, or EMS-PWMC low level and EMS-PWMD high level, so as to control the current flowing direction through the electrodes DJP-C and DJP-D.

[0091] Continue to refer to Figure 3 and Figure 4 In the embodiment, the first switch module 310 includes two first half-bridge circuits 311, and the two first half-bridge circuits 311 are electrically connected with the two trigger ends of the first switch module 310, respectively.

[0092] The second switch module 320 comprises two second half-bridge circuits 321, and the two second half-bridge circuits 321 are respectively electrically connected to two trigger ends of the second switch module 320.

[0093] When the first control device 401 sends a level signal to the two trigger ends of the first switch module 310, the two first half-bridge circuits 311 cooperate to form a loop; when the first control device sends a level signal to the two trigger ends of the second switch module 320, the two second half-bridge circuits 321 cooperate to form a loop.

[0094] In this embodiment, the conduction and disconnection of the circuit are controlled by the way that the first control device 401 sends a level signal to the switch module. When the first control device 401 sends a level signal to the two trigger ends (two EMS-PWMA or two EMS-PWMB) of the first switch module 310, the two first half-bridge circuits 311 are activated, and they cooperate with each other to form a complete current loop, which ensures that the micro-current is transmitted through the DJP-A and DJP-B electrode pairs 202, thereby achieving the effect of skin care.

[0095] Similarly, when the first control device 401 sends a level signal to the two trigger ends (two EMS-PWMC or two EMS-PWMD) of the second switch module 320, the two second half-bridge circuits 321 are activated, and they cooperate to form a current loop. After the loop is formed, the micro-current will be transmitted to the target skin area through the DJP-C and DJP-D electrode pairs 202, thereby achieving the effect of skin care.

[0096] The first half-bridge circuit 311 and the second half-bridge circuit 321 each comprise an upper half-bridge and a lower half-bridge, and the two parts can control the current path through a switch tube (such as a MOSFET). Specifically, each first half-bridge circuit 311 comprises a first control connection end and a second control connection end, and the first control connection end of one first half-bridge circuit 311 and the second control connection end of another first half-bridge circuit 311 are commonly electrically connected to one trigger end of the first switch module 310, and the second control connection end of one first half-bridge circuit 311 and the first control connection end of another first half-bridge circuit 311 are commonly electrically connected to the other trigger end of the first switch module 310; each second half-bridge circuit 321 comprises a third control connection end and a fourth control connection end, and the third control connection end of one second half-bridge circuit 321 and the fourth control connection end of another second half-bridge circuit 321 are commonly electrically connected to one trigger end of the second switch module 320, and the fourth control connection end of one second half-bridge circuit 321 and the third control connection end of another second half-bridge circuit 321 are commonly electrically connected to the other trigger end of the second switch module 320.

[0097] That is, the upper half-bridge and the lower half-bridge of each first half-bridge circuit 311 each include a control connection end, specifically, the control connection end of the upper half-bridge of one first half-bridge circuit 311 is electrically connected with the output end EMS-PWMA of the first control device 401, and the control connection end of the lower half-bridge is electrically connected with the output end EMS-PWMB of the first control device 401; the control connection end of the upper half-bridge of another first half-bridge circuit 311 is electrically connected with the output end EMS-PWMB of the first control device 401, and the control connection end of the lower half-bridge is electrically connected with the output end EMS-PWMA of the first control device 401. It can also be understood that the two control connection ends of the first half-bridge circuit 311 electrically connected with the output end EMS-PWMA of the first control device 401 together form one trigger end of the first switch module 310, and the two control connection ends of the first half-bridge circuit 311 electrically connected with the output end EMS-PWMB of the first control device 401 together form another trigger end of the first switch module 310. When the control signal arrives, the switching tubes of the upper half-bridge and the lower half-bridge will be turned on or turned off in a certain time sequence to achieve precise control of the current and formation of the loop. Because the half-bridge circuit has flexible current control characteristics, higher efficiency and stability can be achieved during the output of the micro-current. Similarly, the connection configuration of the second half-bridge circuit 321 is the same as that of the first half-bridge circuit 311, which will not be described here.

[0098] This half-bridge circuit design has multiple advantages in the entire system. First, the cooperative design of the two half-bridge circuits realizes the control function of micro-current output, simplifies the design of the circuit, and reduces the cost of circuit design; second, using the half-bridge circuit can effectively reduce power consumption when outputting micro-current, while improving the conversion efficiency of the system; third, the loop formed by the two half-bridge circuits can ensure the reliability of the current path and reduce the occurrence of current instability.

[0099] Continuing to refer to Figure 3 and Figure 4 In this embodiment, the number of electrode pairs 202 is four, and the first switch module 310 and the second switch module 320 are respectively electrically connected with two of the electrode pairs 202;

[0100] The power supply unit 300 further includes a third switch module 330 and a fourth switch module 340, and the third switch module 330 and the fourth switch module 340 are respectively electrically connected with the other two electrode pairs 202.

[0101] The control of the eight electrodes in this embodiment can be completed by only two control devices. This design not only improves the flexibility of the control system, but also reduces the hardware cost and complexity.

[0102] Specifically, the eight electrodes are divided into four pairs, which can be referred toFigure 10 , respectively, labeled as electrodes A, B, C, D, E, F, G, H. Among them, A is a single electrode, combined with B into an electrode pair 202. The first switch module 310 is electrically connected with electrodes A, B, the second switch module 320 is electrically connected with electrodes C, D, the third switch module 330 is electrically connected with electrodes E, F, and the fourth switch module 340 is electrically connected with electrodes G, H. Each switch module is responsible for the on-off control of its corresponding electrode pair 202.

[0103] Referring to Figure 9 In the control circuit design, two control devices (i.e., the first control device 401 and the second control device 402) are used to control the four switch modules respectively. Each control device has multiple output ports and can flexibly send control signals to different switch modules to achieve accurate on-off of the electrodes. For example, the first control device 401 controls the first switch module 310 and the second switch module 320, and the second control device 402 controls the third switch module 330 and the fourth switch module 340. Through reasonable allocation of control signals, the eight electrodes can be efficiently managed.

[0104] Specifically, in the working process, the main controller 500 can generate control signals according to the preset care program and transmit them to the two control devices respectively. Based on the received control signals, each control device selectively sends level signals to the corresponding switch module, thereby controlling the on-off of the corresponding electrode pair 202.

[0105] In the first mode, in the first period, electrodes A and B form an electrode pair 202, the main controller 500 sends a control signal to the first control device 401, and the first control device 401 sends a level signal to the first switch module 310 through its output ports (EMS-PWMA, EMS-PWMB), thereby activating the electrode pair 202 formed by electrodes A and B, and a micro-current is transmitted to the target skin area through the two electrodes A and B, achieving the skin care effect.

[0106] In the second period, electrodes C and D form an electrode pair 202, and the first control device 401 sends a level signal to the second switch module 320 through its output ports (EMS-PWMC, EMS-PWMD), so that electrodes C and D are turned on, and the skin care continues.

[0107] In the third period, electrodes E and F form an electrode pair 202, and the second control device 402 sends a level signal to the third switch module 330 through its output ports (EMS-PWME, EMS-PWMF), so that electrodes E and F are turned on, and the skin care continues.

[0108] In the fourth period, electrode G and electrode H form the electrode pair 202, and the second control device 402 sends level signals to the fourth switch module 340 through its output ports (EMS-PWMG, EMS-PWMH) to turn on electrodes G and H, and the skin care continues.

[0109] Through such timing control, diversified care modes can be realized without increasing hardware complexity. The eight electrodes work in different periods, which can stimulate different parts of the skin with micro-current, thereby improving the care effect.

[0110] Of course, the starting electrode pair 202 can be flexibly selected, for example:

[0111] Starting from electrodes C and D, electrodes C and D are activated in the first period.

[0112] Electrodes E and F are activated in the second period.

[0113] Electrodes G and H are activated in the third period.

[0114] Electrodes A and B are activated in the fourth period.

[0115] In addition, in addition to controlling four electrode pairs 202, three electrode pairs 202 can also be controlled. Specifically, three electrodes can be selectively activated in different periods, for example:

[0116] In the first period, electrode A and electrode B form the electrode pair 202.

[0117] In the second period, electrode C and electrode D form the electrode pair 202.

[0118] In the third period, electrode E and electrode F form the electrode pair 202.

[0119] Through such a control mode, a more flexible care mode can be realized, which is suitable for different skin care needs.

[0120] In this way, only two control devices can be used to accurately control eight electrodes. This control method greatly simplifies circuit design, reduces dependence on hardware, and reduces the cost and size of the device. Through timing allocation and flexible signal control, dynamic switching can be performed between multiple electrode pairs 202, ensuring that each electrode pair 202 (A and B, C and D, E and F, G and H) works in the appropriate period, thereby achieving more balanced and effective skin care.

[0121] Referring to Figure 6 , Figure 7 and Figure 8In the embodiment, the switch control unit 400 further comprises a second control device 402, which is electrically connected with the third switch module 330 and the fourth switch module 340, and comprises four output ends. The third switch module 330 comprises two trigger ends, which are respectively electrically connected with two output ends of the second control device 402. The fourth switch module 340 comprises two trigger ends, which are respectively electrically connected with the other two output ends of the second control device 402.

[0122] The second control device 402 outputs a level signal to the third switch module 330 or the fourth switch module 340 based on the control signal of the main controller 500.

[0123] In the embodiment, there are two operating modes. The first mode is that the second control device 402 controls the third switch module 330 and the fourth switch module 340 independently. The second mode is that the first control device 401 and the second control device 402 control different switch modules in different time periods based on the foregoing embodiment.

[0124] Specifically, in the first control mode, the second control device 402 controls the third and fourth switch modules 340 independently.

[0125] The four output ends of the second control device 402 are configured as EMS-PWME, EMS-PWMF, EMS-PWMG, and EMS-PWMH.

[0126] The two trigger ends of the third switch module 330 are respectively electrically connected with the two output ends EMS-PWME and EMS-PWMF of the second control device 402.

[0127] The two trigger ends of the fourth switch module 340 are respectively electrically connected with the two output ends EMS-PWMG and EMS-PWMH of the second control device 402.

[0128] The other two pairs of electrodes 202 are allocated as DJP-E, DJP-F, DJP-G, and DJP-H.

[0129] In the first time period, the second control device 402 distributes level signals to the output terminals EMS-PWME and EMS-PWMF, activates the two trigger terminals (EMS-PWME and EMS-PWMF) of the third switch module 330, so that the electrodes DJP-E and DJP-F connect the micro-current, thereby realizing the skin care effect. It can also be understood that the level signals transmitted by the output terminals EMS-PWME and EMS-PWMF can be EMS-PWME high level and EMS-PWMF low level, or EMS-PWME low level and EMS-PWMF high level, thereby realizing the control of the current flow direction through the electrodes DJP-E and DJP-F.

[0130] In the second time period, the second control device 402 distributes level signals to the output terminals EMS-PWMG and EMS-PWMH, activates the two trigger terminals (EMS-PWMG and EMS-PWMH) of the fourth switch module 340, so that the electrodes DJP-G and DJP-H connect the micro-current, thereby continuing the skin care. It can also be understood that the level signals transmitted by the output terminals EMS-PWMG and EMS-PWMH can be EMS-PWMG high level and EMS-PWMH low level, or EMS-PWMG low level and EMS-PWMH high level, thereby realizing the control of the current flow direction through the electrodes DJP-G and DJP-H.

[0131] In the second control mode, the first control device 401 and the second control device 402 control different switch modules in different time periods, so as to realize a more flexible control mode.

[0132] For example, in the first time period, the first control device 401 controls the first switch module 310, activates the electrodes A and B, and performs skin care.

[0133] In the second time period, the first control device 401 controls the second switch module 320, activates the electrodes C and D, and continues the care.

[0134] In the third time period, the second control device 402 controls the third switch module 330, activates the electrodes E and F, and performs skin care.

[0135] In the fourth time period, the second control device 402 controls the fourth switch module 340, activates the electrodes G and H, and completes the care process.

[0136] This combined control mode enables the two control devices to work alternately in different time periods, thereby realizing a more balanced and diversified care mode. In this way, not only the hardware design is simplified, but also the control resources can be fully utilized to provide more efficient skin care effect.

[0137] Continuing to refer toFigure 7 and Figure 8 In this embodiment, the third switch module 330 includes two third half-bridge circuits 331, which are respectively electrically connected to the two trigger ends of the third switch module 330.

[0138] The fourth switch module 340 includes two fourth half-bridge circuits 341, which are respectively electrically connected to the two trigger ends of the fourth switch module 340.

[0139] When the second controller sends a level signal to the two trigger ends of the third switch module 330, the two third half-bridge circuits 331 cooperate to form a loop; when the second controller sends a level signal to the two trigger ends of the fourth switch module 340, the two fourth half-bridge circuits 341 cooperate to form a loop.

[0140] In this embodiment, the design of the half-bridge circuit achieves efficient control of the current path. The configuration of the third half-bridge circuit 331 and the fourth half-bridge circuit 341 is the same as that of the first half-bridge circuit 311 and the second half-bridge circuit 321, to achieve the micro-current control effect of the third half-bridge circuit 331 and the fourth half-bridge circuit 341, which will not be described here.

[0141] The two third half-bridge circuits 331 are electrically connected to the two trigger ends of the third switch module 330. When the second controller sends a level signal to the two trigger ends of the third switch module 330, the two third half-bridge circuits 331 are activated and cooperate to form a complete current loop. In this way, the micro-current can be transmitted to the target skin area through the electrodes DJP-E and DJP-F, thereby achieving the skin care effect.

[0142] Similarly, the fourth switch module 340 contains two fourth half-bridge circuits 341, which are respectively electrically connected to the two trigger ends of the fourth switch module 340. When the second controller sends a level signal to the two trigger ends of the fourth switch module 340, the two fourth half-bridge circuits 341 are activated and cooperate to form a loop. Through this loop, the micro-current can be transmitted to the target skin area through the electrodes DJP-G and DJP-H, and the skin care continues.

[0143] By adopting the half-bridge circuit mode, not only the complexity of the switch module is reduced, but also the power consumption of the overall system is reduced. By using the half-bridge circuit cooperation mode, the reliable conduction of the current path can be ensured, and the response speed and care effect of the device in different working modes are improved.

[0144] Referring to Figure 3 , Figure 4 , Figure 7 and Figure 8In the embodiment, each first half-bridge circuit 311 includes a first switching component 311a and a first switching tube Ql. The first switching component 311a forms at least a part of the upper half-bridge of the first half-bridge circuit 311, and the first switching tube Ql forms at least a part of the lower half-bridge of the first half-bridge circuit 311. The first switching component 311a of one first half-bridge circuit 311 and the first switching tube Ql of another first half-bridge circuit 311 are turned on or turned off based on the level signal of the switching control unit 400, so that the two first half-bridges form a loop together.

[0145] Similarly, each second half-bridge circuit 321 includes a second switching component 321a and a second switching tube Q2. The second switching component 321a forms at least a part of the upper half-bridge of the second half-bridge circuit 321, and the second switching tube Q2 forms at least a part of the lower half-bridge of the second half-bridge circuit 321. The second switching component 321a of one second half-bridge circuit 321 and the second switching tube Q2 of another second half-bridge circuit 321 are turned on or turned off based on the level signal of the switching control unit 400, so that the two second half-bridge circuits 321 form a loop together.

[0146] In the embodiment, the first and second half-bridge circuits 321 are composed of switching components and switching tubes respectively. Specifically, the two first half-bridge circuits 311 include two first switching components 311a and two first switching tubes Ql. In order to achieve flexible control of the current path, each first switching component 311a and switching tube is turned on or turned off based on the level signal provided by the switching control unit 400. It can be understood that the first switching component 311a and the first switching tube Ql respectively include a control connection end to correspond to the output end of the switching control unit 400.

[0147] Each first half-bridge circuit 311 includes a first switching component 311a, which can be a relay, a MOSFET, an IGBT, or the like. The switching component functions to preliminarily control the flow direction of the current, and determines whether to connect the circuit by responding to the level signal.

[0148] Each first half-bridge circuit 311 includes a first switching tube Ql, which can be a MOSFET or a transistor. These devices can be quickly turned on or turned off, so as to achieve accurate control of the current. The switching tube cooperates with the switching component to determine the on-off state of the half-bridge through the level signal sent by the main controller 500.

[0149] During operation, one of the two first switch components 311a and one of the two first switch tubes Q1 are turned on or off under the action of the level signal of the switch control unit 400, so that the two first half-bridge circuits 311 cooperate to form a complete loop, thereby ensuring that the micro-current can be smoothly transmitted through the corresponding electrode pair 202 to achieve the effect of skin care.

[0150] Similar to the first half-bridge circuit 311, the two second half-bridge circuits 321 are also composed of two second switch components 321a and two second switch tubes Q2.

[0151] Each second half-bridge circuit 321 includes a second switch component 321a, which functions similarly to the first switch component 311a and is used to control the current path. The second switch component 321a can also be composed of MOSFET or other high-efficiency switch elements, which can quickly respond to changes in the level signal.

[0152] Each second half-bridge circuit 321 includes a second switch tube Q2, which is used to control the current path. Through cooperation with the second switch component 321a, it can ensure that the current is accurately turned on or off at a specified time.

[0153] During operation, one of the two second switch components 321a and the other one of the two second switch tubes Q2 are turned on or off based on the level signal of the switch control unit 400, so that the two second half-bridge circuits 321 cooperate to form a complete loop, allowing the micro-current to be effectively transmitted to the skin through the electrode pair 202 to achieve the desired care effect.

[0154] In this embodiment, the half-bridge circuit uses the combination of switch components and switch tubes to efficiently and flexibly control the current path. Specifically, the first half-bridge circuit 311 is connected to electrodes A and B, and the second half-bridge circuit 321 is connected to electrodes C and D. When the switch control unit 400 sends a level signal, the switch components and switch tubes cooperate to form or break the current loop. In addition, through the control of high and low level signals, the current flow through the electrode pair can also be controlled. In this way, electrodes A and B or electrodes C and D can be selectively activated according to different care needs to achieve diversified skin care modes.

[0155] Continuing to refer to Figure 7 and Figure 8In the embodiment, each third half-bridge circuit 331 includes a third switch component 331a and a third switch tube Q3. The third switch component 331a forms at least a part of the upper half-bridge of the third half-bridge circuit 331, and the third switch tube Q3 forms at least a part of the lower half-bridge of the third half-bridge circuit 331. The third switch component 331a of one third half-bridge circuit 331 and the third switch tube Q3 of another third half-bridge circuit 331 are turned on or turned off based on the level signal of the switch control unit 400, so that the two third half-bridges cooperate to form a loop.

[0156] Similarly, each fourth half-bridge circuit 341 includes a fourth switch component 341a and a fourth switch tube Q4. The fourth switch component 341a forms at least a part of the upper half-bridge of the fourth half-bridge circuit 341, and the fourth switch tube Q4 forms at least a part of the lower half-bridge of the fourth half-bridge circuit 341. The fourth switch component 341a of one fourth half-bridge circuit 341 and the fourth switch tube Q4 of another fourth half-bridge circuit 341 are turned on or turned off based on the level signal of the switch control unit 400, so that the two fourth half-bridge circuits 341 cooperate to form a loop.

[0157] In the embodiment, the two third half-bridge circuits 331 include two third switch components 331a and two third switch tubes Q3. In order to achieve flexible control of the current path, each third switch component 331a and third switch tube Q3 are turned on or turned off based on the level signal provided by the switch control unit 400. It can be understood that the third switch component 331a and the third switch tube Q3 respectively include a control connection end to correspond to the output end of the switch control unit 400.

[0158] Each third half-bridge circuit 331 includes a third switch component 331a, which can be a relay, a MOSFET, an IGBT, or the like. The third switch component 331a functions to preliminarily control the flow direction of the current, and determines whether to connect the circuit by responding to the level signal.

[0159] The third half-bridge circuit 331 includes a third switch tube Q3, which is usually selected from a MOSFET or a transistor. These devices can be quickly turned on or turned off, thereby achieving accurate control of the current. The switch tube cooperates with the switch component to determine the on-off state of the half-bridge through the level signal sent by the main controller 500.

[0160] In the working process, one of the two third switch components 331a and one of the two third switch tubes Q3 are turned on or turned off under the action of the level signal of the switch control unit 400, so that the two third half-bridge circuits 331 cooperate to form a complete loop, thereby ensuring that the micro-current can be smoothly transmitted through the electrodes E and F to achieve the effect of skin care.

[0161] Similar to the third half-bridge circuit 331, the two fourth half-bridge circuits 341 are also composed of two fourth switch components 341a and two fourth switch tubes Q4.

[0162] Each fourth half-bridge circuit 341 contains a fourth switch component 341a, which functions similarly to the third switch component 331a and is used to control the current path. The fourth switch component 341a is also typically composed of MOSFET or other high-efficiency switch elements and can quickly respond to changes in the level signal.

[0163] The fourth half-bridge circuit 341 includes a fourth switch tube Q4, which is used to control the current path. Through cooperation with the fourth switch component 341a, it can ensure that the current is accurately turned on or turned off at a specified time.

[0164] It can be understood that the fourth switch component 341a and the fourth switch tube Q4 also respectively include a control connection end to correspond to the output end of the switch control unit 400. The specific connection and control are similar to the third switch component 331a and the third switch tube Q3, and will not be repeated here. During operation, one of the two fourth switch components 341a and one of the two fourth switch tubes Q4 are turned on or turned off based on the level signal of the switch control unit 400, so that the two fourth half-bridge circuits 341 cooperate to form a complete loop, allowing the micro-current to be effectively transmitted to the skin through the electrodes G and H, achieving the desired care effect.

[0165] The utility model further proposes a kind of skin care equipment, including beautifying head 601, optical assembly 602 and the micro-current control circuit of the skin care equipment of the aforementioned embodiment, the specific structure of the micro-current control circuit of the skin care equipment refers to the above embodiment, since the skin care equipment of the present application adopts all the technical solutions of the above all embodiments, it at least has the overall technical effect brought by the technical solutions of the above embodiments, and will not be repeated here.Each electrode is at least partially exposed to the outside of the beautifying head 601 to output micro-current to the skin;Optical assembly 602, optical assembly 602 is used to output near-infrared light to the skin through the beautifying head 601.

[0166] Referring to Figure 10 In the present embodiment, the optical assembly 602 can use a halogen lamp as a light source. The halogen lamp can produce light with a wide spectrum, including visible light and part of near-infrared light. The near-infrared light can penetrate deep into the skin, promoting blood circulation and collagen regeneration. During the skin care process, the light produced by the halogen lamp is irradiated to the skin surface through the beautifying head 601, combined with the stimulation of micro-current, which can effectively enhance the elasticity of the skin and reduce the formation of wrinkles.

[0167] In addition, the optical assembly 602 can also adopt a near-infrared LED lamp, which has a relatively concentrated light wave band and can directly act on the dermis layer of the skin to stimulate the regeneration of skin tissue. The advantage of the LED light source is that it can adjust the output power and light wavelength according to the needs, so as to more accurately treat different skin problems.

[0168] In the embodiment, the micro-current is used in combination with the optical assembly 602 to achieve a more comprehensive skin care effect. Specifically, the micro-current is transmitted to the skin through the electrodes to stimulate skin cells and promote cell metabolism and ATP generation. At the same time, the light of the optical assembly 602 penetrates the beauty head 601 to act on the deep layer of the skin; wherein the micro-current can directly act on the muscle and skin fiber, and in cooperation with the near-infrared light, the elasticity of the skin can be effectively improved, and the combination of the two can make the skin more compact.

[0169] At the same time, the near-infrared light can penetrate the dermis layer of the skin to stimulate fibroblasts to produce more collagen, and the micro-current can accelerate cell metabolism, and the combination of the two can effectively reduce wrinkles and fine lines.

[0170] The above only describes some or preferred embodiments of the present application, neither the text nor the drawings can limit the scope of protection of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A microcurrent control circuit for a skin care device, characterized by, The micro-current control circuit of the skin care device comprises: an electrode assembly comprising a plurality of electrode pairs for outputting micro-currents; a current supply unit comprising at least a first switch module and a second switch module, the first switch module being electrically connected to one electrode pair, and the second switch module being electrically connected to another electrode pair; a switch control unit electrically connected to the first switch module and the second switch module for controlling the first switch module and the second switch module to work respectively; a main controller, the output end and the control end of which are both electrically connected to the switch control unit, the output end of the main controller being used for transmitting a level signal to the switch control unit, and the control end of the main controller being used for outputting a control signal to the switch control unit, the switch control unit outputting the level signal to the first switch module or the second switch module based on the control signal, so that the first switch module and the second switch module control the conduction or the shutdown of the electrode pairs connected thereto.

2. The microcurrent control circuit for a skin care device of claim 1, wherein, The switch control unit comprises a first control device, the first control device being electrically connected to the first switch module and the second switch module, and outputting the level signal to the first switch module or the second switch module based on the control signal of the main controller, so that the first switch module and the second switch module control the conduction or the shutdown of the electrode pairs connected thereto.

3. Microcurrent control circuit for a skin care device according to claim 2, characterized in that The first control device comprises four output ends, the first switch module comprises two trigger ends, and the two trigger ends of the first switch module are electrically connected to two output ends of the first control device; the second switch module comprises two trigger ends, and the two trigger ends of the second switch module are electrically connected to the other two output ends of the first control device.

4. The micro-current control circuit of the skin care device according to claim 3, wherein the first switch module comprises two first half-bridge circuits, and the two first half-bridge circuits are respectively electrically connected to the two trigger ends of the first switch module; the second switch module comprises two second half-bridge circuits, and the two second half-bridge circuits are respectively electrically connected to the two trigger ends of the second switch module; wherein when the first control device sends the level signal to the two trigger ends of the first switch module, the two first half-bridge circuits form a loop in cooperation; and when the first control device sends the level signal to the two trigger ends of the second switch module, the two second half-bridge circuits form a loop in cooperation.

5. The micro-current control circuit of the skin care device according to claim 4, wherein each first half-bridge circuit comprises a first control connection end and a second control connection end, the first control connection end of one first half-bridge circuit and the second control connection end of the other first half-bridge circuit are commonly electrically connected to one trigger end of the first switch module, and the second control connection end of one first half-bridge circuit and the first control connection end of the other first half-bridge circuit are commonly electrically connected to the other trigger end of the first switch module. Each of the second half-bridge circuits comprises a third control connection end and a fourth control connection end, wherein the third control connection end of one of the second half-bridge circuits and the fourth control connection end of the other of the second half-bridge circuits are commonly electrically connected to one trigger end of the second switch module, and the fourth control connection end of one of the second half-bridge circuits and the third control connection end of the other of the second half-bridge circuits are commonly electrically connected to the other trigger end of the second switch module.

6. Microcurrent control circuit for a skin care device according to claim 5, characterized in that The number of the electrode pairs is four, and the first switch module and the second switch module are respectively electrically connected to two of the electrode pairs. The energizing unit further comprises a third switch module and a fourth switch module, and the third switch module and the fourth switch module are respectively electrically connected to the other two of the electrode pairs.

7. The micro-current control circuit of the skin care device according to claim 6, wherein The switch control unit further comprises a second control device, the second control device is electrically connected to the third switch module and the fourth switch module, the second control device comprises four output ends, the third switch module comprises two trigger ends and is respectively electrically connected to two of the output ends of the second control device, and the fourth switch module comprises two trigger ends and is respectively electrically connected to the other two of the output ends of the second control device. The second control device outputs a level signal to the third switch module or the fourth switch module based on the control signal of the main controller.

8. The micro-current control circuit of the skin care device according to claim 7, wherein The third switch module comprises two third half-bridge circuits, and the two third half-bridge circuits are respectively electrically connected to the two trigger ends of the third switch module. The fourth switch module comprises two fourth half-bridge circuits, and the two fourth half-bridge circuits are respectively electrically connected to the two trigger ends of the fourth switch module. When the second control device sends a level signal to the two trigger ends of the third switch module, the two third half-bridge circuits form a loop in cooperation, and when the second control device sends a level signal to the two trigger ends of the fourth switch module, the two fourth half-bridge circuits form a loop in cooperation.

9. The micro-current control circuit of the skin care device according to claim 4, wherein Each of the first half-bridge circuits comprises a first switch component and a first switch tube, and the first switch component of one of the first half-bridge circuits and the first switch tube of the other of the first half-bridge circuits are turned on or turned off based on a level signal of the switch control unit, so that the two first half-bridge circuits form a loop in cooperation. Each of the second half-bridge circuits comprises a second switch component and a second switch tube, and the second switch component of one of the second half-bridge circuits and the second switch tube of the other of the second half-bridge circuits are turned on or turned off based on a level signal of the switch control unit, so that the two second half-bridge circuits form a loop in cooperation.

10. The microcurrent control circuit for a skin care device of claim 8, wherein, Each of the third half-bridge circuits comprises a third switch component and a third switch tube, and the third switch component of one of the third half-bridge circuits and the third switch tube of another of the third half-bridge circuits are turned on or turned off based on a level signal of the switch control unit, so that the two third half-bridge circuits form a loop together; Each of the fourth half-bridge circuits comprises a fourth switch component and a fourth switch tube, and the fourth switch component of one of the fourth half-bridge circuits and the fourth switch tube of the one of the fourth half-bridge circuits are turned on or turned off based on a level signal of the switch control unit, so that the two fourth half-bridge circuits form a loop together.

11. A skin treatment device, characterized by It comprises: a housing, one end of the housing is formed with a cosmetic head; The micro-current control circuit of the skin care device according to any one of claims 1 to 10, each of the electrodes is at least partially exposed outside the cosmetic head for outputting micro-current to the skin; An optical assembly for outputting near-infrared light to the skin through the cosmetic head.

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