A charging circuit for multiple moxibustion heads and moxibustion therapy equipment using the same

Abstract

The present invention discloses a multi-moxibustion head charging circuit and moxibustion therapy equipment using the same, including a power conversion system and a plurality of moxibustion head circuits, wherein the plurality of moxibustion head circuits can be connected in parallel to the output end of the power conversion system; the moxibustion head circuit includes a moxibustion head charging control module, a moxibustion head charging switch module, a moxibustion head energy storage module and a moxibustion head energy storage power detection module; the moxibustion head charging switch module is electrically connected to the output end of the power conversion system and the moxibustion head energy storage module respectively, the moxibustion head energy storage power detects the power information of the moxibustion head energy storage module, and the moxibustion head charging control module outputs a PWM signal according to the power information of the moxibustion head energy storage module to control the operation of the moxibustion head charging switch module; when the plurality of moxibustion head circuits are charged in parallel, the safety and stability of charging are guaranteed, and at the same time, the large current output by the power conversion system can be distributed to each moxibustion head circuit, so that the charging is stable and orderly, and the charging efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of moxibustion therapy, and in particular to a charging circuit for multiple moxibustion heads and moxibustion therapy equipment using the same. Background Art

[0002] In the field of moxibustion therapy, there are now moxibustion therapy devices, including multiple moxibustion heads, which can be placed on different parts of the human body to simulate moxibustion therapy in traditional Chinese medicine;

[0003] In order to solve the problem of troublesome wiring of each moxibustion head, the moxibustion device can be provided with a console (host), and the console wirelessly controls each moxibustion head;

[0004] And then there comes the problem of power supply for the moxibustion heads. There is a charging stand on the console, which can charge the moxibustion heads. However, due to the unreasonable design of the charging circuit, only a single moxibustion head could be charged in the past, or independent charging circuits were set up inside the console, and each charging circuit corresponded to one moxibustion head for charging, which resulted in high cost. If only one charging circuit is set in the console, when charging multiple moxibustion heads at the same time, the current output to each moxibustion head cannot be accurately controlled, resulting in large charging fluctuations, which can easily cause damage to the inside of the moxibustion head. Summary of the invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a stable multi-moxibustion head charging circuit and a moxibustion device using the same.

[0006] The technical solution adopted by the present invention is:

[0007] A charging circuit for multiple moxibustion heads, comprising:

[0008] A power conversion system capable of being electrically connected to an external power source and converting the external power source into power supply;

[0009] A plurality of moxibustion head circuits, wherein the plurality of moxibustion head circuits can be connected in parallel to the output end of the power conversion system;

[0010] The moxibustion head circuit includes a moxibustion head charging control module, a moxibustion head charging switch module, a moxibustion head energy storage module and a moxibustion head energy storage power detection module;

[0011] The input end of the moxibustion head charging switch module can be electrically connected to the output end of the power conversion system, the output end of the moxibustion head charging switch module is used to charge the moxibustion head energy storage module, the moxibustion head energy storage power detection module is connected to the moxibustion head energy storage module to detect the power information of the moxibustion head energy storage module, and the moxibustion head charging control module is electrically connected to the moxibustion head energy storage power detection module and the control end of the moxibustion head charging switch module respectively to output a PWM signal according to the power information of the moxibustion head energy storage module to control the operation of the moxibustion head charging switch module.

[0012] The moxibustion head charging control module can output multiple groups of PWM signals to control the moxibustion head charging switch module to output multiple groups of charging currents of different levels.

[0013] The moxibustion head circuit also includes a temperature detection module, which is used to detect the temperature information of the moxibustion head energy storage module. The moxibustion head charging control module is electrically connected to the temperature detection module.

[0014] The power conversion system includes a rectifier and filter module, a PFC power correction module, an LLC resonance control module, a DC conversion module and a sampling feedback module;

[0015] The input end of the rectifier and filter module can be electrically connected to an external AC power supply, the output end of the rectifier and filter module is electrically connected to the input end of the PFC power correction module, the output end of the PFC power correction module is electrically connected to the input end of the LLC resonance control module and the input end of the DC conversion module respectively, the output end of the DC conversion module can power the moxibustion circuit, the input end of the sampling feedback module is electrically connected to the DC conversion module, the output end of the sampling feedback module is electrically connected to the feedback end of the LLC resonance control module, and the output end of the LLC resonance control module is electrically connected to the control end of the DC conversion module to control the operation of the DC conversion module.

[0016] The power conversion system also includes an auxiliary power supply module, which is electrically connected to the output end of the rectifier and filter module, the PFC power correction module and the LLC resonance control module to supply power to the PFC power correction module and the LLC resonance control module.

[0017] It also includes a host charging control module, a host charging switch module, a host energy storage module and a full-power shutdown module;

[0018] The input end of the host charging switch module is electrically connected to the output end of the DC conversion module, the output end of the host charging switch module, the full-power shutdown module and the host energy storage module form a charging circuit, and the host energy storage module supplies power to the host, the host charging control module is connected to the host energy storage module to detect the power information of the host energy storage module, the host charging control module is electrically connected to the control end of the host charging switch module to control the operation of the host charging switch module, and the full-power shutdown module detects the power information of the host energy storage module and closes or shuts down according to the power information.

[0019] The full power shutdown module includes a switch tube Q7, a switch tube Q8, a thyristor VD3, a resistor R72, a resistor R73, a resistor R75, a resistor R76, a resistor R77, a resistor R78 and a resistor R79;

[0020] The input end of the switch tube Q7 is electrically connected to the negative electrode of the host energy storage module and one end of the resistor R73 respectively, and the output end of the switch tube Q7 is grounded;

[0021] The control end of the switch tube Q7 is electrically connected to the other end of the resistor R73 and one end of the resistor R72 respectively;

[0022] The other end of the resistor R72 is electrically connected to the output end of the switch tube Q8;

[0023] The input end of the switch tube Q8 is electrically connected to one end of the resistor R75, and the other end of the resistor R75 is electrically connected to one end of the resistor R76, one end of the resistor R78 and the positive electrode of the host energy storage module respectively;

[0024] The other end of the resistor R76 is electrically connected to one end of the resistor R77 and the control end of the switch tube Q8 respectively;

[0025] The other end of the resistor R77 is electrically connected to the cathode of the thyristor VD3;

[0026] The control electrode of the thyristor VD3 is electrically connected to the other end of the resistor R78 and one end of the resistor R79 respectively;

[0027] The positive electrode of the thyristor VD3 and the other end of the resistor R79 are both grounded.

[0028] It also includes a voltage conversion module, the input end of the voltage conversion module is electrically connected to the host energy storage module and the output end of the DC conversion module respectively, and the output end of the voltage conversion module is connected to the host.

[0029] The DC conversion module includes an inverter unit, a transformer unit and a rectifier and filter unit. The input end of the inverter unit is electrically connected to the output end of the PFC power correction module, the output end of the inverter unit is electrically connected to the input end of the transformer unit, the output end of the transformer unit is electrically connected to the input end of the rectifier and filter unit, the output end of the rectifier and filter unit can supply power to the moxibustion circuit, and the output end of the LLC resonance control module is electrically connected to the control end of the inverter unit to control the operation of the inverter unit.

[0030] The charging circuit according to the embodiment of the invention has at least the following beneficial effects:

[0031] The power conversion system is electrically connected to an external power source and converts the external power source into power, outputting a large current, which can charge one moxibustion head circuit and also provides the possibility of charging multiple moxibustion head circuits at the same time. When multiple moxibustion head circuits are connected, the moxibustion head circuits are connected in parallel with each other. In the moxibustion head circuit, the moxibustion head energy storage power detection module detects the power information of the moxibustion head energy storage module. When the power is low, the moxibustion head charging control module can modulate the output PWM signal to control the operation of the moxibustion head charging switch module, thereby charging the moxibustion head energy storage module with a large current. As the power increases, the charging current gradually decreases. When multiple moxibustion head circuits are charged in parallel, due to the limitation of the moxibustion head charging switch module, the charging current will not be too high, thereby ensuring the safety and stability of charging. At the same time, the large current output by the power conversion system can be distributed to each moxibustion head circuit, and the moxibustion head with a lower power can be charged first. After the power increases, the charging current is automatically reduced, thereby quickly charging other moxibustion heads with low power, making the charging stable and orderly, and improving the charging efficiency.

[0032] The present invention also proposes a moxibustion therapy device, including a charging station, a plurality of moxibustion heads and a charging circuit for multiple moxibustion heads using the above-mentioned embodiment. The power conversion system is arranged on the charging station, the moxibustion head circuit is arranged on the moxibustion head, and the charging station can charge each moxibustion head.

[0033] The moxibustion therapy device according to the embodiment of the present invention has at least the following beneficial effects:

[0034] The power conversion system is placed on the charging platform, connected to an external power source and converts the external power source. Multiple moxibustion heads can be placed on the charging platform and charged simultaneously, and the charging is stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0036] Figure 1 It is a schematic diagram of the structural principle of the charging circuit of the present invention.

[0037] Figure 2 It is a circuit diagram of the rectifier and filter module of the charging circuit of the present invention.

[0038] Figure 3 It is a circuit diagram of a PFC power correction module of a charging circuit of the present invention.

[0039] Figure 4 It is a circuit diagram of a DC conversion module of the charging circuit of the present invention.

[0040] Figure 5 It is a circuit diagram of the LLC resonance control module of the charging circuit of the present invention.

[0041] Figure 6It is a circuit diagram of an auxiliary power supply module of the charging circuit of the present invention.

[0042] Figure 7 It is a circuit diagram of the host charging part of the charging circuit of the present invention.

[0043] Figure 8 It is a circuit diagram of a voltage conversion module of the charging circuit of the present invention.

[0044] Fig. 9 It is a circuit diagram of the moxibustion head charging part of the charging circuit of the present invention.

[0045] Fig.10 It is a circuit diagram of the temperature detection module of the charging circuit of the present invention. DETAILED DESCRIPTION

[0046] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0050] like Figure 1-Figure 10 As shown, a charging circuit for multiple moxibustion heads includes:

[0051] A power conversion system 1, capable of being electrically connected to an external power source and converting the external power source into power supply;

[0052] A plurality of moxibustion head circuits 2, wherein the plurality of moxibustion head circuits 2 can be connected in parallel to the output end of the power conversion system 1;

[0053] The moxibustion head circuit 2 includes a moxibustion head charging control module 21, a moxibustion head charging switch module 22, a moxibustion head energy storage module 23 and a moxibustion head energy storage quantity detection module 24;

[0054] The input end of the moxibustion head charging switch module 22 can be electrically connected to the output end of the power conversion system 1, and the output end of the moxibustion head charging switch module 22 is used to charge the moxibustion head energy storage module 23. The moxibustion head energy storage power detection module 24 is connected to the moxibustion head energy storage module 23 to detect the power information of the moxibustion head energy storage module 23. The moxibustion head charging control module 21 is electrically connected to the moxibustion head energy storage power detection module 24 and the control end of the moxibustion head charging switch module 22 respectively to output a PWM signal according to the power information of the moxibustion head energy storage module 23 to control the operation of the moxibustion head charging switch module 21.

[0055] In some embodiments, the power conversion system 1 can output a power level of 19V, +10A, and can simultaneously support charging of 24 moxibustion head circuits. Of course, the power conversion system can also have other output levels to charge more moxibustion head circuits, which is not limited here.

[0056] In certain embodiments, such as Figure 1 , Fig. 9 , Fig.10 As shown, the moxibustion head charging control module 21 can adopt a charging control chip, the moxibustion head energy storage module 23 can include an energy storage battery or an energy capacitor, the moxibustion head charging switch module 22 can adopt a switch tube Q9, the switch tube Q9 here or the switch tube proposed below can be selected from the conventional models of triodes or MOS tubes, the moxibustion head energy storage power detection module 24 can be composed of a resistor R87, the charging control chip includes a current feedback terminal CSP and a voltage feedback terminal FB, the current feedback terminal of the charging control chip is connected to the positive electrode of the moxibustion head energy storage module 23 to obtain the charging current of the moxibustion head, and the voltage feedback terminal of the charging control chip is connected to the positive electrode of the moxibustion head energy storage module 23 through the resistor R87 to obtain the voltage of the moxibustion head energy storage module, thereby converting the power of the moxibustion head energy storage module, and the charging control chip then controls the conduction threshold of the switch tube Q9 to adjust the charging current.

[0057] The power conversion system 1 is electrically connected to an external power source and converts the external power source into power, outputting a large current, which can charge one moxibustion head circuit and also provides the possibility of charging multiple moxibustion head circuits at the same time. When multiple moxibustion head circuits are connected, each moxibustion head circuit is connected in parallel with each other. In the moxibustion head circuit 2, the moxibustion head energy storage power detection module 24 detects the power information of the moxibustion head energy storage module 23. When the power is low, the moxibustion head charging control module 21 can modulate the output PWM signal to control the operation of the moxibustion head charging switch module 22, thereby charging the moxibustion head energy storage module 23 with a large current. As the power increases, the charging current gradually decreases. When multiple moxibustion head circuits 2 are charged in parallel, due to the limitation of the moxibustion head charging switch module 22, the charging current will not be too high, thereby ensuring the safety and stability of charging. At the same time, the large current output by the power conversion system can be distributed to each moxibustion head circuit 2, and the moxibustion head with a lower power can be charged first. After the power increases, the charging current is automatically reduced, thereby quickly charging other moxibustion heads with low power, making the charging stable and orderly, and improving the charging efficiency.

[0058] In some embodiments, the moxibustion head charging control module 21 can output multiple groups of PWM signals to control the moxibustion head charging switch module 22 to output multiple groups of charging currents of different levels.

[0059] For example, 24 moxibustion heads are charged and managed, and the moxibustion heads with low power are charged first, so as to improve the charging efficiency, and the charging can be divided into levels according to the amount of power. If the highest charging current is I, the moxibustion heads with less than 20% power are charged with a current of I, and when charged to 50%, a current of 0.8I is used to charge, and when charged to 80%, a current of 0.5I is used to charge until the power is fully charged. This charging method can also maximize the protection of the moxibustion head energy storage module, making the moxibustion head energy storage module more durable.

[0060] In some embodiments, in order to ensure charging safety, such as Figure 1 , Fig.10 As shown, the moxibustion head circuit 2 also includes a temperature detection module 25, which is used to detect the temperature information of the moxibustion head energy storage module 24, and the moxibustion head charging control module 21 is electrically connected to the temperature detection module 25;

[0061] The temperature detection module 25 may use an NTC or PTC temperature measuring element, and the temperature detection module also includes a switch tube Q10, a switch tube Q11, a resistor R93, a resistor R92, a resistor R89, a resistor R90, a resistor R91 and a thyristor VD4;

[0062] The NTC temperature measuring element is close to the moxibustion head energy storage module to detect the temperature, one end of the NTC temperature measuring element is electrically connected to the output end of the moxibustion head charging switch module, and the other end of the NTC temperature measuring element is electrically connected to one end of the resistor R89 ​​and one end of the resistor R90 respectively;

[0063] The other end of the resistor R89 ​​is electrically connected to the output end of the switch tube Q10, the input end of the switch tube Q10 is respectively electrically connected to the external power supply, one end of the resistor R93 and the input end of the switch tube Q11, the output end of the switch tube Q11 is electrically connected to the moxibustion head charging control module, the control end of the switch tube Q11 is respectively electrically connected to the other end of the resistor R93, the control end of the switch tube Q10 and one end of the resistor R92, the other end of the resistor R92 is electrically connected to the cathode of the thyristor VD4, the control electrode of the thyristor VD4 is respectively electrically connected to the other end of the resistor R90 and one end of the resistor R91, and the positive electrode of the thyristor VD4 and the other end of the resistor R91 are both grounded.

[0064] Therefore, the resistance of the NTC temperature measuring element changes with temperature, which controls the on-off state of the switch tube Q10, the switch tube Q11 and the thyristor VD4 to change, and generates a temperature signal which is fed back to the moxibustion head charging control module. When the temperature of the moxibustion head energy storage module rises, the moxibustion head charging control module cuts off the charging current to ensure charging safety.

[0065] In order to provide a stable charging power supply, such as Figure 1-Figure 6 As shown, the power conversion system 1 includes a rectifier and filter module 3, a PFC power correction module 4, an LLC resonance control module 5, a DC conversion module 6 and a sampling feedback module 7;

[0066] The input end of the rectifier and filter module 3 can be electrically connected to an external AC power supply, the output end of the rectifier and filter module 3 is electrically connected to the input end of the PFC power correction module 4, the output end of the PFC power correction module 4 is electrically connected to the input end of the LLC resonance control module 5 and the input end of the DC conversion module 6 respectively, the output end of the DC conversion module 6 can charge the moxibustion head, the input end of the sampling feedback module 7 is electrically connected to the DC conversion module 6, the output end of the sampling feedback module 7 is electrically connected to the feedback end of the LLC resonance control module 5, and the output end of the LLC resonance control module 5 is electrically connected to the control end of the DC conversion module 6 to control the operation of the DC conversion module 6.

[0067] In certain embodiments, such as Figure 2 As shown, the rectifying and filtering module 3 includes an EMI filtering unit 31 and a rectifying unit 32 connected in sequence, the EMI filtering unit 31 can be electrically connected to an external AC power source, and the rectifying unit 32 is electrically connected to the input end of the PFC power correction module 4, so as to output a stable power supply with reduced interference and capable of effectively preventing external impact. .

[0068] In certain embodiments, such as Figure 4As shown, the DC conversion module 6 includes an inverter unit 61, a transformer unit 62 and a rectifier and filter unit 63. The input end of the inverter unit 61 is electrically connected to the output end of the PFC power correction module 4, the output end of the inverter unit 61 is electrically connected to the input end of the transformer unit 62, the output end of the transformer unit 62 is electrically connected to the input end of the rectifier and filter unit 63, the output end of the rectifier and filter unit 63 can supply power to the moxibustion head circuit 2, and the output end of the LLC resonance control module 5 is electrically connected to the control end of the inverter unit 61 to control the operation of the inverter unit 61.

[0069] Among them, the inverter unit 61 includes a switch tube Q3 and a switch tube Q4, and the switch tube Q3 and the switch tube Q4 are controlled by the LLC resonance control module. The transformer unit 62 is composed of a transformer T1, and then the AC power output by the inverter unit 61 is transformed by the transformer unit 62 to increase the voltage, and then rectified and output by the rectifier and filter unit 63 to provide a stable charging power supply.

[0070] like Figure 3 As shown, in some embodiments, the PFC power correction module 4 includes a PFC power correction chip, a switch tube Q1, a switch tube Q2, an inductor L4 and other series of components;

[0071] like Figure 5 As shown, in some embodiments, the LLC resonance control module 5 includes an LLC resonance control chip;

[0072] The sampling feedback module 7 is composed of a photoelectric coupler OCT1, a thyristor VD1, and a voltage divider circuit composed of resistors R42, R45, and R46, so as to feed back the output power of the DC conversion module 6 to the LLC resonance control chip;

[0073] The PFC power correction module 4 adjusts the waveform of the current, compensates for the phase difference between the current and voltage, improves the utilization rate of electric energy, and outputs it to the LLC resonance control module 5 and the DC conversion module 6 at the same time. The LLC resonance control module 5 then controls the DC conversion module 6, improves the efficiency of DC conversion, and ensures the reduction of electric energy loss, so that the DC conversion module 6 can output a stable charging power supply.

[0074] In some embodiments, the PFC power correction module 4 and the LLC resonance control module 5 may be powered directly by the rectification and filtering module 3;

[0075] Furthermore, in order to ensure the stable operation of the PFC power correction module 4 and the LLC resonance control module 5, the power conversion system further includes an auxiliary power supply module 8, which is electrically connected to the output end of the rectifier and filter module 3, the PFC power correction module 4 and the LLC resonance control module 5 to supply power to the PFC power correction module 4 and the LLC resonance control module 5;

[0076] In some embodiments, the auxiliary power supply module 8 may include a switching power supply control chip, a switch tube Q5, a transformer T2, and an auxiliary power supply feedback unit 81. One end of the primary coil of the transformer T2 is electrically connected to the output end of the rectifier and filter module 3, and the other end of the primary coil of the transformer T2 is electrically connected to the input end of the switch tube Q5. The output end of the switch tube Q5 is grounded. The switching power supply control chip is electrically connected to the control end of the switch tube Q5 to control the operation of the switch tube Q5. The secondary coil output power of the transformer T2 supplies power to the PFC power correction module 4 and the LLC resonance control module 5. At the same time, the auxiliary power supply feedback unit 81 detects the output power of the secondary coil of the transformer T2 to form a closed-loop control.

[0077] The auxiliary power supply feedback unit 81 includes a photocoupler OTC2, a resistor R58, a resistor R60, a resistor R61, a resistor R59 and a thyristor VD2;

[0078] One end of the resistor R58 is electrically connected to one end of the resistor R60 and one end of the secondary coil of the transformer T2;

[0079] The other end of the resistor R68 is electrically connected to one end of the resistor R69 and the positive electrode of the light emitter of the photocoupler OTC2;

[0080] The other end of the resistor R59 is electrically connected to the negative electrode of the light emitter of the photocoupler OTC2 and the cathode of the thyristor VD2 respectively;

[0081] The other end of the resistor R60 is electrically connected to one end of the resistor R61 and the control electrode of the thyristor VD2 respectively;

[0082] The positive electrode of the thyristor VD2 and the other end of the resistor R61 are both grounded;

[0083] The input pole of the light receiver of the optocoupler OTC2 is electrically connected to the switching power supply control chip, and the output pole of the light receiver of the optocoupler OTC2 is grounded, thereby feeding back the voltage level of the auxiliary power supply to the switching power supply control chip, and the switching power supply control chip controls the operation of the switch tube Q5 to modulate the output of the auxiliary power supply.

[0084] In some embodiments, a host 9 is also included, on which a controller, a display screen connected to the controller, operation buttons, etc. are provided. The host can send wireless signals to control the operation of the moxibustion heads. Each moxibustion head needs to rely on the control signal of the host to operate. Therefore, the stability of the power supply of the host needs to be guaranteed during operation.

[0085] This design can directly utilize the electric energy output by the power conversion system. The power conversion system outputs a stable power supply, which can not only charge the moxibustion head, but also ensure the power consumption of the main unit. The overall structure is also simpler.

[0086] like Figure 7 As shown, the host 9 may be provided with a host charging control module 91, a host charging switch module 92, a host energy storage module 93 and a full-power shutdown module 94, and the host energy storage module 93 supplies power to various components of the host;

[0087] The input end of the host charging switch module 92 is electrically connected to the output end of the DC conversion module 6, the output end of the host charging switch module 92 forms a charging circuit with the full-power shutdown module 94 and the host energy storage module 93, and the host energy storage module 93 supplies power to the host, the host charging control module 91 is connected to the host energy storage module 93 to detect the power information of the host energy storage module 93, the host charging control module 91 is electrically connected to the control end of the host charging switch module 92 to control the operation of the host charging switch module 92, and the full-power shutdown module 94 detects the power information of the host energy storage module 93 and closes or shuts down according to the power information.

[0088] Among them, the host charging control module 91 can be a host switch driving chip, and the charging current and the power of the host energy storage module can be detected by resistors R67, R68, R69, R70 and R74. The host energy storage module 93 can be a storage battery or an energy storage capacitor. The host charging switch module 92 can be a switch tube Q6. The host switch driving chip is electrically connected to the control end of the switch tube Q6, the input end of the switch tube Q6 is electrically connected to the output end of the DC conversion module 6, and the output end of the switch tube Q6 is electrically connected to the positive electrode of the host energy storage module 93;

[0089] The full power shutdown module 94 includes a switch tube Q7, a switch tube Q8, a thyristor VD3, a resistor R72, a resistor R73, a resistor R75, a resistor R76, a resistor R77, a resistor R78 and a resistor R79;

[0090] The input end of the switch tube Q7 is electrically connected to the negative electrode of the host energy storage module 93 and one end of the resistor R73, respectively, and the output end of the switch tube Q7 is grounded;

[0091] The control end of the switch tube Q7 is electrically connected to the other end of the resistor R73 and one end of the resistor R72 respectively;

[0092] The other end of the resistor R72 is electrically connected to the output end of the switch tube Q8;

[0093] The input end of the switch tube Q8 is electrically connected to one end of the resistor R75, and the other end of the resistor R75 is electrically connected to one end of the resistor R76, one end of the resistor R78 and the positive electrode of the host energy storage module 93 respectively;

[0094] The other end of the resistor R76 is electrically connected to one end of the resistor R77 and the control end of the switch tube Q8 respectively;

[0095] The other end of the resistor R77 is electrically connected to the cathode of the thyristor VD3;

[0096] The control electrode of the thyristor VD3 is electrically connected to the other end of the resistor R78 and one end of the resistor R79 respectively;

[0097] The positive electrode of the thyristor VD3 and the other end of the resistor R79 are both grounded.

[0098] When the host energy storage module 93 is low on power, the switch tube Q7 is turned on and the host energy storage module 93 is charged normally. When the host energy storage module 93 is fully charged, the switch tube Q7 is turned off by the thyristor VD3 and the switch tube Q8, thereby stopping charging.

[0099] In certain embodiments, such as Figure 8 As shown, it also includes a voltage conversion module 95, the input end of the voltage conversion module 95 is electrically connected to the host energy storage module 93 and the output end of the DC conversion module 6 respectively, and the output end of the voltage conversion module 95 is connected to the host.

[0100] The voltage conversion module 95 includes a transformer chip. In some embodiments, it can convert voltages within the range of 5V-24V and output 3.3V or 5V voltage to power the host. Here, the input end of the voltage conversion module 95 is electrically connected to the output end of the host energy storage module 93 and the DC conversion module 6, respectively, so that when the external power supply is connected to the rectifier and filter module 3, the host 9 is powered by the external power supply and the host energy storage module 93 is charged at the same time. After the external power supply is cut off, it switches to the host energy storage module 93 without delay to power the host.

[0101] A specific embodiment of the present invention also discloses a moxibustion therapy device, including a charging station, a plurality of moxibustion heads, and a charging circuit for multiple moxibustion heads disclosed in any of the above embodiments. The power conversion system 1 is arranged on the charging station, the moxibustion head circuit 2 is arranged on the moxibustion head, the charging station can charge each moxibustion head, and the host is also arranged on the charging station, and the user can control the moxibustion head through the host.

[0102] The power conversion system is placed on the charging platform, connected to an external power source and converts the external power source. Multiple moxibustion heads can be placed on the charging platform and charged simultaneously, and the charging is stable and efficient.

[0103] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0104] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A charging circuit for multiple moxibustion heads, characterized in that: include: A power conversion system capable of being electrically connected to an external power source and converting the external power source into power supply; A plurality of moxibustion head circuits, wherein the plurality of moxibustion head circuits can be connected in parallel to the output end of the power conversion system; The moxibustion head circuit includes a moxibustion head charging control module, a moxibustion head charging switch module, a moxibustion head energy storage module and a moxibustion head energy storage power detection module; The input end of the moxibustion head charging switch module can be electrically connected to the output end of the power conversion system, the output end of the moxibustion head charging switch module charges the moxibustion head energy storage module, the moxibustion head energy storage power detection module is connected to the moxibustion head energy storage module to detect the power information of the moxibustion head energy storage module, and the moxibustion head charging control module is electrically connected to the moxibustion head energy storage power detection module and the control end of the moxibustion head charging switch module respectively to output a PWM signal according to the power information of the moxibustion head energy storage module to control the operation of the moxibustion head charging switch module; The power conversion system includes a rectifier and filter module, a PFC power correction module, an LLC resonance control module, a DC conversion module and a sampling feedback module; The input end of the rectifier and filter module can be electrically connected to an external AC power supply, the output end of the rectifier and filter module is electrically connected to the input end of the PFC power correction module, the output end of the PFC power correction module is electrically connected to the input end of the LLC resonance control module and the input end of the DC conversion module respectively, the output end of the DC conversion module can power the moxibustion circuit, the input end of the sampling feedback module is electrically connected to the DC conversion module, the output end of the sampling feedback module is electrically connected to the feedback end of the LLC resonance control module, and the output end of the LLC resonance control module is electrically connected to the control end of the DC conversion module to control the operation of the DC conversion module; The power conversion system further includes an auxiliary power supply module, which is electrically connected to the output end of the rectifier and filter module, the PFC power correction module and the LLC resonance control module to supply power to the PFC power correction module and the LLC resonance control module; It also includes a host charging control module, a host charging switch module, a host energy storage module, and a full-power shutdown module; The input end of the host charging switch module is electrically connected to the output end of the DC conversion module, the output end of the host charging switch module, the full-power shutdown module and the host energy storage module form a charging circuit, and the host energy storage module supplies power to the host, the host charging control module is connected to the host energy storage module to detect the power information of the host energy storage module, the host charging control module is electrically connected to the control end of the host charging switch module to control the operation of the host charging switch module, and the full-power shutdown module detects the power information of the host energy storage module and closes or shuts down according to the power information.

2. A charging circuit for multiple moxibustion heads according to claim 1, characterized in that: The moxibustion head charging control module can output multiple groups of PWM signals to control the moxibustion head charging switch module to output multiple groups of charging currents of different levels.

3. A charging circuit for multiple moxibustion heads according to claim 1, characterized in that: The moxibustion head circuit also includes a temperature detection module, which is used to detect the temperature information of the moxibustion head energy storage module. The moxibustion head charging control module is electrically connected to the temperature detection module.

4. A charging circuit for multiple moxibustion heads according to claim 1, characterized in that: The full power shutdown module includes a switch tube Q7, a switch tube Q8, a thyristor VD3, a resistor R72, a resistor R73, a resistor R75, a resistor R76, a resistor R77, a resistor R78 and a resistor R79; The input end of the switch tube Q7 is electrically connected to the negative electrode of the host energy storage module and one end of the resistor R73 respectively, and the output end of the switch tube Q7 is grounded; The control end of the switch tube Q7 is electrically connected to the other end of the resistor R73 and one end of the resistor R72 respectively; The other end of the resistor R72 is electrically connected to the output end of the switch tube Q8; The input end of the switch tube Q8 is electrically connected to one end of the resistor R75, and the other end of the resistor R75 is electrically connected to one end of the resistor R76, one end of the resistor R78 and the positive electrode of the host energy storage module respectively; The other end of the resistor R76 is electrically connected to one end of the resistor R77 and the control end of the switch tube Q8 respectively; The other end of the resistor R77 is electrically connected to the cathode of the thyristor VD3; The control electrode of the thyristor VD3 is electrically connected to the other end of the resistor R78 and one end of the resistor R79 respectively; The positive electrode of the thyristor VD3 and the other end of the resistor R79 are both grounded.

5. A charging circuit for multiple moxibustion heads according to claim 4, characterized in that: It also includes a voltage conversion module, the input end of the voltage conversion module is electrically connected to the host energy storage module and the output end of the DC conversion module respectively, and the output end of the voltage conversion module is connected to the host.

6. A charging circuit for multiple moxibustion heads according to claim 1, characterized in that: The DC conversion module includes an inverter unit, a transformer unit and a rectifier and filter unit. The input end of the inverter unit is electrically connected to the output end of the PFC power correction module, the output end of the inverter unit is electrically connected to the input end of the transformer unit, the output end of the transformer unit is electrically connected to the input end of the rectifier and filter unit, the output end of the rectifier and filter unit can supply power to the moxibustion circuit, and the output end of the LLC resonance control module is electrically connected to the control end of the inverter unit to control the operation of the inverter unit.

7. A moxibustion device, characterized in that: It includes a charging station, a plurality of moxibustion heads and a charging circuit for multiple moxibustion heads as described in any one of claims 1 to 6, wherein the power conversion system is arranged on the charging station, the moxibustion head circuit is arranged on the moxibustion head, and the charging station can charge each moxibustion head.

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