Current control circuit of skin care equipment and skin care equipment

Abstract

The utility model discloses a current control circuit of a skin care device and the skin care device, the current control circuit of the skin care device comprises an electrode assembly, the electrode assembly comprises a plurality of electrodes, and a power-on unit is used for being electrically connected with a power supply and at least comprises a first switch unit and a second switch unit. The first switch unit and the second switch unit are electrically connected with at least two electrodes respectively, the main control unit is electrically connected with the first switch unit and the second switch unit, and when the main control unit is configured to be in a first state, the two electrodes electrically connected with the first switch unit are controlled to form an electrode pair; the two electrodes are used for controlling the second switch unit to be electrically connected to form an electrode pair; and when the main control unit is configured to be in the second state, part of the electrodes electrically connected with the first switch unit and part of the electrodes electrically connected with the second switch unit are controlled to cooperate to form new electrode pairs to work, so that the adjacent electrode pairs are re-paired, and the current can be uniformly distributed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cosmetic equipment technical field, especially a skin care equipment's current control circuit and skin care equipment. BACKGROUND

[0002] Micro-current and radio frequency technology have been widely used in skin care and anti-aging fields. These technologies can effectively promote the microcirculation and metabolism of the skin by applying micro-current and / or radio frequency current on the skin surface, thereby improving the elasticity and firmness of the skin, delaying aging and improving skin quality.

[0003] In related technologies, multiple electrodes are usually distributed in a preset shape (such as a ring-shaped or rectangular distribution) on a working head, and multiple optocouplers are used to control the conduction or shutdown of multiple electrodes and a power supply to fix and pair the electrodes into electrode pairs in a manner that two electrodes form a pair, for outputting micro-current or radio frequency current.

[0004] However, this fixed pairing of electrode pairs has certain defects. Since there are inevitably some gaps between electrode pairs, the electrodes in adjacent electrode pairs cannot be re-paired, and no current passes through the gaps, resulting in uneven current distribution. SUMMARY

[0005] The main purpose of the utility model is to provide a current control circuit for a skin care device, which aims to solve the problem of uneven current distribution caused by the inability to re-pair electrodes.

[0006] To achieve the above purpose, the utility model provides a current control circuit for a skin care device, which comprises:

[0007] An electrode assembly, which comprises a plurality of electrodes for outputting micro-current and / or radio frequency current;

[0008] A power supply unit for electrically connecting with a power supply, the power supply unit comprising at least a first switch unit and a second switch unit, the first switch unit and the second switch unit each electrically connecting at least two electrodes;

[0009] A main control unit electrically connected with the first switch unit and the second switch unit, when the main control unit is configured in a first state, controlling two electrodes electrically connected by the first switch unit to form an electrode pair, and / or controlling two electrodes electrically connected by the second switch unit to form an electrode pair; when the main control unit is configured in a second state, controlling part of the electrodes electrically connected by the first switch unit and part of the electrodes electrically connected by the second switch unit to cooperate to form an electrode pair.

[0010] In some embodiments, the main control unit comprises a first control device, a second control device and a main controller, the main controller is electrically connected with the first control device and the second control device; the first control device and the second control device are electrically connected with the first switch unit and the second switch unit, and the second control device is electrically connected with the second switch unit.

[0011] The first control device works based on the control signal of the main controller to distribute the digital signal of the main controller to the first switch unit and / or the second switch unit.

[0012] The second control device works based on the control signal of the main controller to distribute the digital signal of the main controller to the second switch unit.

[0013] In some embodiments, the first control device comprises a first output end, a second output end and a third output end, and the second control device comprises a fourth output end.

[0014] The first output end and the second output end are electrically connected with the first switch unit, the third output end is electrically connected with the second switch unit, and the fourth output end of the second control device is electrically connected with the second switch unit.

[0015] In some embodiments, the first control device and the second control device are switch control chips.

[0016] In some embodiments, the first switch unit comprises two first switch components and at least one first switch tube, one end of the two first switch components is connected with a power supply, the other end of the two first switch components is respectively electrically connected with one electrode, the control end of one first switch component is electrically connected with the first output end of the first control device, one conduction end of the first switch tube is electrically connected with the other first switch component, and the control end of the first switch tube is electrically connected with the second output end of the first control device.

[0017] One first switch component and the first switch tube are turned on based on the digital signal output by the first control device to form a loop.

[0018] In some embodiments, the second switch unit comprises two second switch components and at least one second switch tube.

[0019] One end of the two second switch components is connected with a power supply, the other end of the two second switch components is respectively electrically connected with one electrode, and the control end of one second switch component is electrically connected with the third output end of the first control device; the control end of the second switch tube is electrically connected with the fourth output end of the second control device.

[0020] One of the second switch components and the first switch tube are turned on based on the digital signal of the main control unit to form a loop in cooperation.

[0021] In some embodiments, the second switch unit includes two second switch components and at least one second switch tube.

[0022] One end of each of the two second switch components is connected to a power supply, and the other end of each of the two second switch components is electrically connected to one of the electrodes. The control end of one of the second switch components is electrically connected to the third output end of the first control device. The control end of the second switch tube is electrically connected to the fourth output end of the second control device.

[0023] One of the second switch components and the first switch tube are turned on based on the digital signal of the main control unit to form a loop in cooperation. The second switch tube and one of the second switch components are turned on based on the digital signal of the main control unit to form a loop in cooperation.

[0024] In some embodiments, the second control device includes a fifth output end.

[0025] The power supply unit further includes a third switch unit, the third switch unit includes a third switch component and a third switch tube, one end of the third switch component is electrically connected to a power supply circuit, the other end of the third switch component is electrically connected to one electrode, and one conduction end of the third switch tube is electrically connected to the third switch component. The control end of the third switch tube is electrically connected to the fifth output end of the second control device.

[0026] The third switch tube and one of the first switch components are turned on based on the digital signal of the main control unit to form a loop in cooperation.

[0027] In some embodiments, the second control device includes a fifth output end. The power supply unit further includes a third switch unit, the third switch unit includes a third switch component and a third switch tube, one end of the third switch component is electrically connected to a power supply circuit, the other end of the third switch component is electrically connected to one electrode, and one conduction end of the third switch tube is electrically connected to the third switch component. The control end of the third switch tube is electrically connected to the fifth output end of the second control device. The third switch tube and one of the first switch components are turned on based on the digital signal of the main control unit to form a loop in cooperation.

[0028] The first switch unit further comprises a first unidirectional conducting unit, one end of the first unidirectional conducting unit is electrically connected with one of the first switch components, and the other end is electrically connected with the other conducting end of the first switch tube and connected with the negative pole of the power supply;

[0029] The second switch unit further comprises a second unidirectional conducting unit, which is electrically connected between the one second switch component and the second switch tube and connected with the negative pole of the power supply;

[0030] The third switch unit further comprises a third unidirectional conducting unit, which is electrically connected with the other conducting end of the third switch tube and connected with the negative pole of the power supply.

[0031] In some embodiments, the first unidirectional conducting unit comprises two first diodes, the cathodes of the two first diodes are electrically connected and connected with the negative pole of the power supply, the anode of one of the first diodes is electrically connected with one of the first switch components, and the anode of the other first diode is electrically connected with the other conducting end of the first switch tube;

[0032] The second unidirectional conducting unit comprises two second diodes, the cathodes of the two second diodes are electrically connected and connected with the negative pole of the power supply, the anode of one of the second diodes is electrically connected with the second switch component, and the anode of the other second diode is electrically connected with the other conducting end of the second switch tube;

[0033] The third unidirectional conducting unit comprises a third diode, the cathode of the third diode is electrically connected with the negative pole of the power supply, and the anode of the third diode is electrically connected with the other conducting end of the third switch tube.

[0034] The utility model further provides a skin care equipment, include:

[0035] The shell is formed with the cosmetic head in one end;

[0036] The current control circuit of the skin care equipment of preceding embodiment, each electrode is at least partially exposed outside the cosmetic head, and is used for outputting micro-current to the skin;

[0037] Optical assembly, the optical assembly is used for outputting near infrared light to the skin through the cosmetic head.

[0038] The beneficial effects of the technical scheme of the utility model lie in: through the combined design of the electrode assembly, the power supply unit and the main control unit, the dynamic pairing between the electrode pairs is realized; in the first state, the main control unit controls the two electrodes of the first switch unit and the second switch unit to form independent electrode pairs; in the second state, the main control unit can flexibly recombine the electrodes, forms new electrode pairs through the control of the part of the electrodes of the first switch unit and the part of the electrodes of the second switch unit, realizes the re-pairing of the adjacent electrode pairs, and makes the current be able to be uniformly distributed. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the module electric connection schematic view of the current control circuit of the skin care equipment in an embodiment of the utility model;

[0040] Figure 2 It shows the distribution schematic view of the electrode assembly;

[0041] Figure 3 It is the circuit diagram of the first control device in an embodiment of the utility model;

[0042] Figure 4 It is the circuit diagram of the second control device in an embodiment of the utility model;

[0043] Figure 5 It is the circuit diagram of the current control circuit of the skin care equipment in an embodiment of the utility model;

[0044] Figure 6 It is the circuit diagram of the current control circuit of the skin care equipment in an embodiment of the utility model;

[0045] Figure 7 It is the circuit diagram of the current control circuit of the skin care equipment in another embodiment of the utility model.

[0046] BRIEF DESCRIPTION OF DRAWINGS

[0047] 100, electrode assembly; 101, electrode; 200, power supply unit; 210, first switch unit; 210a, first switch assembly; Q1, first switch tube; 212, first unidirectional conduction unit; D1, first diode; 220, second switch unit; 220a, second switch assembly; Q2, second switch tube; 222, second unidirectional conduction unit; D2, second diode; 230, third switch unit; 230a, third switch assembly; Q3, third switch tube; 233, third unidirectional conduction unit; D3, third diode; 300, main control unit; 301, main controller; U1, first control device; A1, first output terminal; A2, second output terminal; A3, third output terminal; U2, second control device; A4, fourth output terminal; A5, fifth output terminal; 500, shell; 501, beauty head; 502, optical assembly.

[0048] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0049] The schemes in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only some of the embodiments in the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0050] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0051] 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 a middle element can be present simultaneously. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or a middle element can be present simultaneously.

[0052] 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 technical features or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included 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 realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0053] The output of micro-current and / or radio frequency current can effectively promote the metabolism of skin cells, help to improve the tightness and elasticity of the skin, and can reduce wrinkles to a certain extent. Secondly, these currents can stimulate the deep tissue of the skin and accelerate blood circulation, which helps to improve the skin color and overall skin condition. The existing electrode assembly has a plurality of electrodes, and a plurality of electrodes are distributed in the working head according to a preset shape (for example, a ring-shaped, rectangular distribution mode), and then a plurality of light coupling pairs correspondingly control the conduction or closing of the plurality of electrodes and the power supply, so that two electrodes are fixedly paired into an electrode pair in a manner of two electrodes as a group, for outputting micro-current or radio frequency current.

[0054] This traditional electrode pairing mode is usually fixed, which will cause a gap between adjacent electrode pairs, so that there is no current passing through these areas, causing uneven current distribution. Therefore, the utility model provides a current control circuit of skin care equipment, which can be specifically referred to as Figure 1 And Figure 2 .

[0055] The embodiment of the present application provides a current control circuit of skin care equipment, which comprises:

[0056] The electrode assembly 100 comprises a plurality of electrodes, and the plurality of electrodes are used for outputting micro-current and / or radio frequency current;

[0057] The power-on unit 200 is used for electrically connecting with the power supply, and the power-on unit 200 at least comprises a first switch unit 210 and a second switch unit 220, and the first switch unit 210 and the second switch unit 220 are electrically connected with at least two electrodes respectively;

[0058] The main control unit 300 is electrically connected with the first switch unit 210 and the second switch unit 220. When the main control unit 300 is configured in a first state, the main control unit 300 controls the two electrodes electrically connected by the first switch unit 210 to form an electrode pair and / or controls the two electrodes electrically connected by the second switch unit 220 to form an electrode pair. When the main control unit 300 is configured in a second state, the main control unit 300 controls the partial electrodes electrically connected by the first switch unit 210 and the partial electrodes electrically connected by the second switch unit 220 to form an electrode pair.

[0059] In the embodiment, the electrode assembly 100 is mainly used to contact the skin of a user directly to output micro-current and / or radio frequency current to the skin. The output of the micro-current and / or radio frequency current can effectively promote the metabolism of skin cells, help to improve the tightness and elasticity of the skin, and reduce wrinkles to a certain extent. In addition, the current can stimulate the deep tissue of the skin and accelerate blood circulation, which helps to improve the skin color and the overall skin condition. As for the material selection of the electrode assembly 100, a material with good electrical conductivity and no skin irritation can be selected, such as medical-grade stainless steel, titanium alloy or silver-coated material. These materials can not only ensure the effective conduction of the current, but also avoid skin allergic reactions during use.

[0060] The energizing unit 200 in the embodiment includes at least two switch units, i.e., the first switch unit 210 and the second switch unit 220. The two switch units are each electrically connected with two electrodes 101, and are used to realize the conduction and closing of the electrodes 101 electrically connected by the two switch units to the power supply under the control of the main control unit 300. In addition, at a certain moment, the partial electrodes electrically connected by the first switch unit 210 can form a new electrode pair with the partial electrodes 101 electrically connected by the second switch unit 220.

[0061] The main control unit 300 in the embodiment is electrically connected with the first switch unit 210 and the second switch unit 220. When the main control unit 300 is configured in a first state, the main control unit 300 controls the two electrodes 101 electrically connected by the first switch unit 210 to form an electrode pair and controls the two electrodes electrically connected by the second switch unit 220 to form an electrode pair. When the main control unit 300 is configured in a second state, the main control unit 300 controls the partial electrodes electrically connected by the first switch unit 210 and the partial electrodes electrically connected by the second switch unit 220 to form an electrode pair.

[0062] The electrode assembly 100 is composed of several electrodes 101, which are in direct contact with the user's skin, for outputting micro-current and / or radio frequency current, helping to improve skin firmness, elasticity, and reduce wrinkles. The power supply unit 200 includes at least a first switch unit 210 and a second switch unit 220, each of which is connected to at least two electrodes 101, and can realize the conduction and closing between the electrodes 101 and the power supply under the instruction of the main control unit 300. The main control unit 300 is configured with at least two states; for example, in the first state, the electrodes of the first switch unit 210 and the second switch unit 220 work independently; in the second state, some electrodes 101 of these switch units are recombined to form a new electrode pair to work, thereby dynamically adjusting the current path.

[0063] For example, assuming that the electrode assembly 100 includes four electrodes 101 (illustrated as electrodes A, B, C, and D), and arranged in a clockwise direction. During operation, the main control unit 300 can control different electrode pairs at different time periods, for example, in the first time period, the main control unit 300 is set to the first state, and controls the electrodes A and B of the first switch unit 210 to pair to output micro-current and / or radio frequency current to the skin.

[0064] In the second time period, the main control unit 301 can switch to the second state, and the main control unit 300 is reconfigured to control the electrodes B and C to pair to work, and the electrode pair forms a new current path.

[0065] In the third time period, the main control unit 300 continues to rotate the current path in the clockwise direction, controls the electrodes C and D to pair, and then switches to the electrodes D and A to pair, to complete a cycle.

[0066] Of course, in addition to the above-mentioned clockwise rotation of the current path, the current path can also be rotated counterclockwise, that is, for counterclockwise rotation, the main control unit 300 can control the pairing of the electrode pairs in the opposite order;

[0067] In the first time period, the main control unit 300 sets the electrodes D and C to pair to form the first pair of working electrodes. In the second time period, it switches to the pairing of electrodes C and B to rotate the current path counterclockwise, and in the third time period, it continues to control the pairing of electrodes B and A, and finally rotates the current path back to the pairing of electrodes A and D.

[0068] In some application scenarios, two electrode pairs can also work simultaneously to increase the coverage or enhance the treatment effect.

[0069] For example, in the first time period, the main control unit 300 controls the electrode A and B pair, and the electrode C and D pair, both of which work simultaneously. In the second time period, the electrode B and C pair is switched, while the electrode D and A pair works. In this way, the current path can be quickly switched between multiple electrode pairs, achieving a wider care coverage.

[0070] Thus, when the current path needs to be switched from electrode A-B to electrode B-C, the main control unit 300 can reconfigure the electrode pairs without being limited to the original fixed combination. This flexible pairing mode ensures that the current can be evenly distributed among all electrodes, avoiding current gaps and improving overall care effectiveness and user experience.

[0071] The main control unit 300 in this embodiment can also flexibly execute the electrode pairing mode through a preset program, providing a variety of operation options. For example, the user can choose a mode of automatic sequential execution, in which the electrode pairs will be paired in a clockwise or counterclockwise sequence according to the preset sequence, ensuring that the current path evenly covers all electrode pairs. In addition, the main control unit 300 also supports user-defined selection, allowing the user to individually activate a certain electrode pair or any combination of multiple electrode pairs for work. This flexible control mode allows users to adjust the current path and electrode combination according to specific care needs or preferences, thus achieving a more personalized and customized skin care experience.

[0072] In the technical solution of this embodiment, through the combined design of the electrode assembly 100, the power supply unit 200 and the main control unit 300, dynamic pairing between electrode pairs is achieved, overcoming the defects of traditional fixed pairing electrodes. In the traditional fixed pairing electrode design, current gaps often occur between adjacent electrode pairs, resulting in uneven current distribution and affecting care effectiveness. However, through the flexible control of the main control unit 300, the electrode pairs can be dynamically switched between the first and second states; in the first state, the main control unit 300 controls the two electrodes of the first and second switch units 210 and 220 to form independent electrode pairs; in the second state, the main control unit 300 can flexibly recombine the electrodes to form new electrode pairs by controlling the part of the first switch unit 210 and the part of the second switch unit 220. This dynamic pairing can effectively eliminate the current gaps between adjacent electrode pairs, allowing the current to be evenly distributed among all electrodes.

[0073] Referring to Figure 2 , Figure 3 and Figure 4In the embodiment, the main control unit 300 comprises a first control device U1, a second control device U2 and a main controller 301, the main controller 301 is electrically connected to the first control device U1 and the second control device U2; the first control device U1 is electrically connected to the first switch unit 210 and the second switch unit 220, and the second control device U2 is electrically connected to the second switch unit 220.

[0074] The first control device U1 works based on the control signal of the main controller 301 to distribute the digital signal of the main controller 301 to the first switch unit 210 and / or the second switch unit 220.

[0075] The second control device U2 works based on the control signal of the main controller 301 to distribute the digital signal of the main controller 301 to the second switch unit 220.

[0076] In the embodiment, the main control unit 300 comprises a main controller 301, a first control device U1 and a second control device U2. The main controller 301 is the core part of the system, which is used to generate control signals and digital signals and is electrically connected to the first control device U1 and the second control device U2. The functions of the first control device U1 and the second control device U2 are to receive the control signal of the main controller 301 and distribute the digital signal of the main controller 301 to the first switch unit 210 and / or the second switch unit 220 as needed. Microcontrollers, logic circuits or special control chips can be used as the main controller 301 and the control devices. The control signal can be a level signal used to indicate the on or off state of the switch; the digital signal can include pulse signals or specific coded signals used to transmit more complex control commands.

[0077] In a typical working process, the main controller 301 generates a control signal instruction to indicate that the first control device U1 is turned on. At this time, the first control device U1 receives and transmits the digital signal of the main controller 301 to the first switch unit 210, while the second control device U2 is in an off state and does not transmit signals. The first switch unit 210 selectively controls the on-off operation of the connected electrode pairs according to the received digital signal. If the main controller 301 issues another instruction, the second control device U2 is turned on, while the first control device U1 is turned off, and the digital signal is distributed to the second switch unit 220, so that the second switch unit 220 controls the corresponding electrode pairs to work. This control mode ensures that the main controller 301 can flexibly manage the pairing work of multiple switch units and electrode pairs through simple control signal scheduling, meeting different application requirements.

[0078] Further, in another working mode, assuming that the electrode assembly 100 contains four electrodes (electrodes A, B, C, D), the main controller 301 instructs the first control device U1 to turn on through a control signal, and transmits a digital signal to the first switch unit 210 to control the electrodes A and B to work in pairs. At the same time, the second control device U2 is turned off, and the second switch unit 220 does not receive the signal. Next, when it is needed to control the electrodes B and C to work in pairs, the main controller 301 sends a new control signal to turn on the second control device U2 to transmit a digital signal to the second switch unit 220, while the first control device U1 can continue to be turned on to make the first switch unit 210 also receive the same digital signal, ensuring the accurate execution of the electrode pair B and C (the first control device U1 is electrically connected to the first switch unit 210 and the second switch unit 220). In this way, the main control unit 300 can flexibly distribute the digital signal to accurately control the pairing of the electrode pairs and the adjustment of the current path.

[0079] Continuing to refer to Figure 1 and Figure 3 In this embodiment, the first control device U1 includes a first output end A1, a second output end A2, and a third output end A3, and the second control device U2 includes a fourth output end A4.

[0080] Among them, the first output end A1 and the second output end A2 are electrically connected to the first switch unit 210, the third output end A3 is electrically connected to the second switch unit 220, and the fourth output end A4 of the second control device U2 is electrically connected to the second switch unit 220.

[0081] In this embodiment, each output end is connected to the first switch unit 210 and the second switch unit 220 respectively, for controlling the pairing work between the electrodes. Specifically, the first output end A1 and the second output end A2 are electrically connected to the first switch unit 210 to control the electrodes of the first switch unit 210; the third output end A3 is electrically connected to the second switch unit 220 to control a part of the electrodes of the second switch unit 220; and the fourth output end A4 of the second control device U2 is also electrically connected to the second switch unit 220 to cooperate with the first control device U1 to complete the pairing of the electrode pairs and the control of the current path.

[0082] In the working process, the pairing of the electrodes is flexibly controlled by the outputs according to different current path requirements. For example, when electrodes A and B are paired, the first output A1 and the second output A2 of the first control device U1 output digital signals to control the electrodes A and B inside the first switching unit 210 to form a pair, thereby forming a current path between the electrodes. When electrodes B and C need to be paired, the second output A2 continues to output signals, and at the same time, the third output A3 also starts to output signals to control the electrodes B of the first switching unit 210 and the electrodes C of the second switching unit 220 to pair, while the first output A1 stops outputting signals. When electrodes C and D are paired, the control signals are output by the third output A3 and the fourth output A4, and the second output A2 stops outputting signals to form a pair of electrodes C and D inside the second switching unit 220. Finally, when electrodes D and A are paired, the fourth output A4 and the first output A1 start to output signals to control the electrodes D of the second switching unit 220 and the electrodes A of the first switching unit 210 to pair, and the other outputs stop outputting signals at this time.

[0083] Each output is turned on and off as needed, not only achieving flexible electrode combination, but also ensuring uniform distribution of the current path, effectively avoiding uneven distribution of the current. In addition, the utilization efficiency of the current is improved, the effect of skin care is significantly improved, and the pairing and working mode of the electrode pair can be quickly adjusted according to specific care needs and user preferences.

[0084] Further, the first control device U1 and the second control device U2 are switching control chips.

[0085] In the present embodiment, the first control device U1 and the second control device U2 can adopt switching control chips, such as SGM487547T8146, etc. (for example, MAX4617, ADG884 can also be selected). These switching control chips have the advantages of high integration, fast response speed and high reliability, and are very suitable for complex current path control and electrode pairing management. The benefits of selecting chips include simplifying circuit design, reducing the number of components, improving the stability and accuracy of the system. In addition, the switching control chip also supports multiple digital signal input modes, such as level signals and pulse signals, which can flexibly cope with different control requirements and ensure uniform distribution of the current among the electrode pairs.

[0086] Specifically, SGM487547T8146 is an analog switch chip with low on-resistance, low leakage current and wide power voltage support (e.g. 2.5V to 5.5V), suitable for precise control of micro-current and radio frequency current. Using such chips as control devices not only simplifies system wiring, but also enables more complex electrode pairing and switching strategies through high-precision control of the chips.

[0087] With reference to the foregoing Figure 3 and Figure 5 In the embodiment, the first switch unit 210 includes two first switch components 210a and at least one first switch tube Q1, one end of each of the two first switch components 210a is connected to the power supply, the other end of each of the two first switch components 210a is electrically connected to one electrode 101; the control end of one first switch component 210a is electrically connected to the first output end A1 of the first control device U1; one conduction end of the first switch tube Q1 is electrically connected to the other first switch component 210a, and the control end of the first switch tube Q1 is electrically connected to the second output end A2 of the first control device U1.

[0088] Among them, one first switch component 210a and the first switch tube Q1 are turned on based on the digital signal output by the first control device U1 to form a loop.

[0089] In the embodiment, when the first output end A1 of the first control device U1 outputs a digital signal, the signal controls one first switch component 210a to be turned on with the connected electrode, at which time the electrode is connected to the power supply. However, in order to form a complete loop, the first switch tube Q1 needs to be turned on. The control end of the first switch tube Q1 receives a control signal from the second output end A2 of the first control device U1, when the signal is high, the first switch tube Q1 is turned on, at which time the electrode electrically connected to the other first switch component 210a is paired to work as an electrode pair (electrodes A and B are paired); that is, the current can flow from the power supply, electrode A, electrode B and the first switch tube Q1 in turn to form a loop.

[0090] In this configuration, the coordinated operation of one first switch component 210a and the first switch tube Q1 can achieve precise control of the current path. Specifically, the first switch tube can select a triode, MOSFET or other type of switch device as the first switch tube Q1 to ensure that fast and reliable switching operations can be achieved under different control signal conditions.

[0091] With reference to the foregoing Figure 3 , Figure 4 and Figure 6 In the embodiment, the second switch unit 220 includes two second switch components 220a and at least one second switch tube Q2.

[0092] One end of each of the two second switch components 220a is connected to the power supply, the other end of each of the two second switch components 220a is electrically connected to one electrode 101, and the control end of one second switch component 220a is electrically connected to the third output end A3 of the first control device U1; the control end of the second switch tube Q2 is electrically connected to the fourth output end A4 of the second control device U2.

[0093] One second switch assembly 220a is turned on with the first switch tube Q1 or the second switch tube Q2 based on the digital signal of the main control unit 300 to form a loop in cooperation.

[0094] In this embodiment, when the main control unit 300 is configured as the first state, the digital signal of the main control unit 300 is transmitted to one second switch assembly 220a through the third output end A3 of the first control device U1, while the fourth output end A4 of the second control device U2 transmits the signal to the second switch tube Q2. At this time, the second switch assembly 220a and the second switch tube Q2 work in cooperation to form a loop, so that the electrodes C and D work in pairs. This pairing realizes the current flow between the electrodes, meeting the working requirements of the electrode CD pairing. If the main control unit 300 does not need the loop to work in the first state, the second switch assembly 220a and the second switch tube Q2 are kept closed, and no loop is formed.

[0095] When the main control unit 300 is switched to the second state, one second switch assembly 220a and the first switch tube Q1 form a loop. In this configuration, the second switch assembly 220a receives the signal from the main control unit 300 and works with the switch tube of the first switch unit 210, so that the electrodes B and C work in pairs. This flexible control mode realizes dynamic adjustment of the current path through the state switching of the main control unit 300, and can accurately control according to different current requirements and electrode pairing requirements.

[0096] Referring to Figure 4 and Figure 7 In this embodiment, the second control device U2 includes a fifth output end A5.

[0097] The power supply unit 200 further includes a third switch unit 230, which includes a third switch assembly 230a and a third switch tube Q3. One end of the third switch assembly 230a is electrically connected to the power supply circuit, and the other end of the third switch assembly 230a is electrically connected to one electrode. One conduction end of the third switch tube Q3 is electrically connected to the third switch assembly 230a. The control end of the third switch tube Q3 is electrically connected to the fifth output end A5 of the second control device U2.

[0098] The third switch tube Q3 is turned on with one first switch assembly 210a based on the digital signal of the main control unit 300 to form a loop in cooperation.

[0099] In the embodiment, the main control unit 300 is configured in a cross current path mode, that is, the second control device U2 outputs a digital signal through the fifth output terminal A5 to turn on the third switch tube Q3. At the same time, the main control unit 300 controls a first switch assembly 210a to turn on through the corresponding output terminal of the first control device U1, so that the electrode A is paired with the electrode E (the electrode E can be arranged at the position of the electrode C) to form a cross current path. In this configuration, the current flows from the electrode A to the electrode E, realizing the current pairing across positions and increasing the flexibility of the current path.

[0100] In addition to the pairing of the electrodes A and E, the embodiment can also extend the pairing combination, for example, adding the electrode D and the electrode F (the electrode F can be arranged near the electrode B), and controlling by the corresponding switch assembly and switch tube to make the electrodes B and F also form a loop. This flexible pairing mode effectively covers more skin areas through the cross current path, improves the uniformity of current distribution and the care effect.

[0101] In addition, the main control unit 300 can freely switch the combination of electrode pairing (that is, switch between the cross current path and the rotating current path for use experience) according to the preset program or user demand, meet different care modes and personalized needs, and further optimize the performance of the skin care device.

[0102] In order to prevent the current crosstalk problem that may occur in the rotating current path and the cross current path mode, a unidirectional conduction unit is added in the first switch unit 210, the second switch unit 220 and the third switch unit 230. Specifically, continue to refer to Figures 5 to 7 In the embodiment, the second control device U2 includes the fifth output terminal A5; the power-on unit 200 further includes a third switch unit 230, the third switch unit 230 includes a third switch assembly 230a and a third switch tube Q3, one end of the third switch assembly 230a is electrically connected to the power supply circuit, the other end of the third switch assembly 230a is electrically connected to an electrode, and one conduction end of the third switch tube Q3 is electrically connected to the third switch assembly 230a; the control end of the third switch tube Q3 is electrically connected to the fifth output terminal A5 of the second control device U2; wherein the third switch tube Q3 and a first switch assembly 210a are turned on based on the digital signal of the main control unit 300 to cooperate to form a loop.

[0103] The first switch unit 210 further includes a first unidirectional conduction unit 212, one end of the first unidirectional conduction unit 212 is electrically connected to a first switch assembly 210a, and the other end is electrically connected to the other conduction end of the first switch tube Q1 and connected to the negative electrode of the power supply;

[0104] The second switch unit 220 further comprises a second unidirectional conduction unit 222 electrically connected between a second switch component 220a and another conduction end of a second switch tube Q2 and connected to the negative pole of the power supply;

[0105] The third switch unit 230 further comprises a third unidirectional conduction unit 233 electrically connected to another conduction end of a third switch tube Q3 and connected to the negative pole of the power supply.

[0106] In the rotating current path or cross current path mode, due to the dynamic adjustment of the current path and the pairing of multiple electrode pairs, there may be a situation where the transistor is in an off state, and the emitter may still receive current from another loop. Such a situation may affect the circuit on the collector side of the transistor, causing cross-talk or unstable current distribution (that is, when there is current at the emitter, if the current path is not completely isolated, it may "mislead" the collector end, thereby introducing unwanted signals or noise. This may affect the level of the collector or cause unintended logic states). To solve this problem, the introduction of the unidirectional conduction unit ensures that the current can only flow in a predetermined direction, effectively isolating the mutual interference between different current paths. For example, in the cross current path mode of electrode A and E pairing, the first unidirectional conduction unit 212 of the first switch unit 210 ensures that the current only flows in a predetermined direction and does not flow in the opposite direction into other non-conducting loops. This is also applicable to the pairing of electrodes B and F or other rotating path electrode combinations, ensuring the independence and non-interference between paths.

[0107] In this way, by adding a unidirectional conduction unit in each switch unit, the cross-talk problem caused by reverse current flow or uncontrolled current path can be effectively prevented. Whether it is a rotating current path mode or a cross current path mode, this design can ensure that the current path between each electrode pair is clear and not interfered.

[0108] Further, each unidirectional conduction unit can be built with a diode, specifically, the first unidirectional conduction unit 212 comprises two first diodes D1, the cathodes of the two first diodes D1 are electrically connected and connected to the negative pole of the power supply, the anode of one of the first diodes D1 is electrically connected to a first switch component 210a, and the anode of the other first diode D1 is electrically connected to another conduction end of a first switch tube Q1;

[0109] The second unidirectional conduction unit 222 comprises two second diodes D2, the cathodes of the two second diodes D2 are electrically connected and connected to the negative pole of the power supply, the anode of one of the second diodes D2 is electrically connected to a second switch component 220a, and the anode of the other second diode D2 is electrically connected to another conduction end of a second switch tube Q2;

[0110] The third unidirectional conduction unit 233 comprises a third diode D3, the cathode of the third diode D3 is electrically connected to the negative electrode of the power supply, and the anode of the third diode D3 is electrically connected to the other conduction end of the third switch tube Q3.

[0111] The reason for using diodes to build is that it allows current to flow in only one direction, thereby preventing reverse current interference to the circuit, which is particularly important in the case of current path intersection or dynamic adjustment (current path rotation), can effectively isolate different loops and prevent cross talk. Moreover, the diode structure is simple, low in cost, and has high reliability.

[0112] The utility model further proposes a skin care equipment, including shell 500, optical assembly 502 and the current control circuit of skin care equipment, the specific structure of the current control circuit of skin care equipment refers to the above -mentioned embodiment, because the skin care equipment adopts all the technical schemes of all the above -mentioned embodiments, therefore at least has all the technical effects brought by the technical scheme of the above -mentioned embodiment, here will not repeat one by one. Among them, the one end of shell 500 is formed with beauty head 501, and each electrode is at least partially exposed outside the beauty head 501 to output micro-current to the skin, and the optical assembly 502 is used to output near-infrared light to the skin through the beauty head 501.

[0113] Reference Figure 2 In the embodiment, the electrodes can be arranged on the beauty head 501 in a predetermined shape, for example, a plurality of electrodes can be spaced around to form a ring, a rectangle or other geometric shape. This arrangement allows the micro-current and radio frequency current to uniformly cover the treatment area, and the near-infrared light output by the optical assembly 502 (which can be a halogen lamp, an LED lamp, etc.) to synergistically act. The cooperation of the optical assembly 502 and the current control circuit not only stimulates the deep tissue of the skin through the current, promotes cell metabolism and improves skin elasticity, but also further accelerates blood circulation and improves skin quality through near-infrared light irradiation, thereby achieving more comprehensive and efficient skin care.

[0114] The above only describes some or preferred embodiments of the utility model, neither the text nor the drawings can limit the scope of protection of the utility model, any equivalent structural transformation made by using the contents of the utility model specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the utility model.

Claims

1. A current control circuit for a skin treatment device, characterized by, The application relates to an electrode assembly, a power supply unit, a main control unit and a switching control chip. The electrode assembly comprises a plurality of electrodes for outputting micro-current and / or radio frequency current. The power supply unit is electrically connected with a power supply and comprises at least a first switching unit and a second switching unit, and each of the first switching unit and the second switching unit is electrically connected with at least two electrodes. The main control unit is electrically connected with the first switching unit and the second switching unit, and when the main control unit is configured as a first state, the main control unit controls two electrodes electrically connected with the first switching unit to form an electrode pair and / or controls two electrodes electrically connected with the second switching unit to form an electrode pair; when the main control unit is configured as a second state, the main control unit controls part of the electrodes electrically connected with the first switching unit and part of the electrodes electrically connected with the second switching unit to form an electrode pair.

2. A current control circuit for a skin treatment device according to claim 1, characterised in that, The main control unit comprises a first control device, a second control device and a main controller, the main controller is electrically connected with the first control device and the second control device, the first control device is electrically connected with the first switching unit and the second switching unit, and the second control device is electrically connected with the second switching unit. The first control device works based on a control signal of the main controller to distribute a digital signal of the main controller to the first switching unit and / or the second switching unit. The second control device works based on a control signal of the main controller to distribute a digital signal of the main controller to the second switching unit.

3. A current control circuit for a skin treatment device according to claim 2, characterised in that, The first control device comprises a first output end, a second output end and a third output end, and the second control device comprises a fourth output end. The first output end and the second output end are electrically connected with the first switching unit, the third output end is electrically connected with the second switching unit, and the fourth output end of the second control device is electrically connected with the second switching unit.

4. A current control circuit for a skin treatment device according to claim 2 or 3, characterised in that, The first control device and the second control device are switching control chips.

5. The current control circuit for a skin care device of claim 3, wherein, The first switching unit comprises two first switching assemblies and at least one first switching tube, one end of each of the two first switching assemblies is connected with the power supply, the other end of each of the two first switching assemblies is electrically connected with one electrode, the control end of one first switching assembly is electrically connected with the first output end of the first control device, one conducting end of the first switching tube is electrically connected with the other first switching assembly, and the control end of the first switching tube is electrically connected with the second output end of the first control device. One first switching assembly and the first switching tube are turned on based on a digital signal output by the first control device to form a loop.

6. A current control circuit for a skin care device according to claim 3 or 5, characterised in that, The second switching unit comprises two second switching assemblies and at least one second switching tube. One end of each of the two second switching assemblies is connected with the power supply, the other end of each of the two second switching assemblies is electrically connected with one electrode, the control end of one second switching assembly is electrically connected with the third output end of the first control device, and the control end of the second switching tube is electrically connected with the fourth output end of the second control device. One of the second switch assemblies and the first switch tube are turned on based on the digital signal of the main control unit to form a loop in cooperation.

7. The current control circuit for a skin care device of claim 5, wherein, The second switch unit comprises two second switch assemblies and at least one second switch tube. One ends of the two second switch assemblies are connected to the power supply, and the other ends of the two second switch assemblies are respectively connected to one electrode. One of the second switch assemblies and the first switch tube are turned on based on the digital signal of the main control unit to form a loop in cooperation.

8. The current control circuit for a skin care device of claim 5, wherein, The second control device comprises a fifth output end. The energizing unit further comprises a third switch unit, the third switch unit comprises a third switch assembly and a third switch tube, one end of the third switch assembly is connected to the power supply circuit, the other end of the third switch assembly is connected to one electrode, and one conduction end of the third switch tube is connected to the third switch assembly. The third switch tube and one of the first switch assemblies are turned on based on the digital signal of the main control unit to form a loop in cooperation.

9. The current control circuit for a skin care device of claim 7, wherein, The second control device comprises a fifth output end. The energizing unit further comprises a third switch unit, the third switch unit comprises a third switch assembly and a third switch tube, one end of the third switch assembly is connected to the power supply circuit, the other end of the third switch assembly is connected to one electrode, and one conduction end of the third switch tube is connected to the third switch assembly. The third switch tube and one of the first switch assemblies are turned on based on the digital signal of the main control unit to form a loop in cooperation. The first switch unit further comprises a first one-way conduction unit, one end of the first one-way conduction unit is connected to one of the first switch assemblies, and the other end of the first one-way conduction unit is connected to the other conduction end of the first switch tube and connected to the negative electrode of the power supply.

10. A current control circuit for a skin treatment device according to claim 9, characterised in that, The second switch unit further comprises a second one-way conduction unit, the second one-way conduction unit is connected between one of the second switch assemblies and one of the second switch tubes and connected to the negative electrode of the power supply. The third switch unit further comprises a third one-way conduction unit, the third one-way conduction unit is connected to the other conduction end of the third switch tube and connected to the negative electrode of the power supply. The first one-way conduction unit comprises two first diodes, cathodes of the two first diodes are connected and connected to the negative electrode of the power supply, one of the first diodes is connected to one of the first switch assemblies, and the other first diode is connected to the other conduction end of the first switch tube. The second unidirectional conducting unit comprises two second diodes, cathodes of the two second diodes are electrically connected and connected to a negative electrode of a power supply, an anode of one of the second diodes is electrically connected to a second switch assembly, and an anode of the other second diode is electrically connected to another conducting end of the second switch tube. The third unidirectional conducting unit comprises a third diode, a cathode of the third diode is electrically connected to the negative electrode of the power supply, and an anode of the third diode is electrically connected to another conducting end of a third switch tube.

11. A skin treatment device, characterized by The skin care device comprises: a housing, one end of the housing is formed with a cosmetic head; a 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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