Electromagnetic stimulation equipment and multi-stage booster device thereof

Abstract

An electromagnetic stimulation device and a multi-stage boosting device thereof, the multi-stage boosting device is formed by connecting a plurality of basic voltage multipliers, each basic voltage multiplier having a first current direction limiting element, a first energy storage element, a second current direction limiting element and a second energy storage element, for generating direct current high voltage for electromagnetic stimulation. The first current direction limiting element and the first energy storage element are electrically connected in series with an external power supply, the first current direction limiting element is connected in parallel with a second current direction limiting element having a current limiting direction opposite to the first current direction limiting element, and the second current direction limiting element is connected in series with the second energy storage element; the first and second current direction limiting elements are turned on or off according to the polarity of the input voltage, and are used to switch the current direction so that the external power supply charges the first and second energy storage elements respectively in different cycles, and the charging process of the second energy storage element is provided by the external power supply and the first energy storage element, and has a voltage that is twice that of the first energy storage element, and the second energy storage elements are connected in series with each other for output application.

Description

Technical Field

[0001] The utility model is related to the field of biological electromagnetic stimulation equipment, and in particular to a multi-stage boosting device and electromagnetic stimulation equipment that converts external input AC power into DC high voltage electricity sufficient to supply electromagnetic stimulation intensity, thereby replacing the traditional linear transformer approach while still maintaining the electromagnetic stimulation efficiency and having the effect of lightweight equipment. Background Art

[0002] In order to study neuroscience and improve neuropsychiatric diseases, some electromagnetic stimulation devices have been proposed, which use alternating magnetic fields to simulate electrical signals to affect various parts of the body, such as transcranial magnetic stimulation (TMS), which uses non-invasive neuromodulation technology to affect brain activity by generating changing magnetic fields through magnetic field coils placed on the scalp. Generally, the critical stimulation parameters corresponding to various parts of the body will vary depending on the target part, improvement plan, stimulation depth and neural conditions. However, electromagnetic stimulation devices commonly installed in medical institutions often still require extremely high voltages to generate high currents in order to effectively generate magnetic fields that are stimulating to the brain or nerves to activate neurons and enable nerves to reach action potentials. Taking TMS technology as an example, in the past, depending on the depth of the stimulation target and the neural conditions, in order to achieve the expected stimulation threshold, the voltage usually required at least 300 volts (V) or even thousands of volts. Furthermore, due to the special nature of the stimulated object being the human body, in addition to requiring high voltage and high current, the stimulation frequency range also has a better working frequency and is approximately 0.5-50Hz (Hertz). Therefore, in order to meet the aforementioned high voltage, high current and working frequency conditions, the common electromagnetic stimulation equipment currently cannot be implemented using existing electronic transformers (Adapter), and can only use traditional linear transformers (transformers) as an implementation method. However, once this approach is selected, the volume and weight of the overall equipment will be limited by the design framework of the linear transformer, and the equipment cannot be miniaturized to be suitable for general home use. Therefore, for patients who need to frequently seek stimulation improvement but can only move repeatedly to medical institutions, there are still many inconveniences in reality.

[0003] On the other hand, the prior art has also proposed some different types of electromagnetic stimulation devices, such as: (i) Sacrificial intensity type, which is performed under the premise that the nerve cannot reach the action potential. Usually, such devices cannot be classified as formal electromagnetic stimulation devices, and most of the current home electromagnetic stimulation devices on the market belong to this type; (ii) Sacrificial frequency type, which accumulates the stimulation intensity at a weaker charging speed, and the frequency will not exceed 0.2Hz. Although it is only applicable to extremely low frequencies and has available indications, it is indeed a pioneer in the successful miniaturization of electromagnetic stimulation devices. However, due to the limitations of the working and output conditions, the adaptive symptoms improved by the stimulation of the human body are limited; (iii) Frequency superposition replacement intensity type, related research has proposed that although low-intensity stimulation cannot directly cause biological effects, high-frequency continuous stimulation can produce effects due to the superposition of biological effects. Although the boost device of this type of device does not require too high a voltage, it must provide a large amount of current to supply the high-frequency output. Therefore, it will not adopt options other than traditional linear transformers, and therefore it also has the problem of large size and heavy weight. Today, even the lightest electromagnetic stimulation device still weighs about 20 kilograms, and corresponding safety devices or rollers must be designed to facilitate placement or movement. For example, if a 2000-watt traditional linear transformer is used, the total weight of the transformer alone is about 15 kilograms. The main reason for this is that the traditional linear transformer is basically composed of metal components. In other words, 75% of the weight of the entire electromagnetic stimulation device is due to the presence of this large iron block, which indirectly leads to one of the main reasons why electromagnetic stimulation devices are still difficult to popularize or even use in households.

[0004] In view of this, the present invention proposes a lightweight electromagnetic stimulation device and a voltage-boosting device that is different from the existing operating mode, which can boost the mains voltage to even more than 1 kilovolt, and then enable the device to output energy sufficient to drive the nerves to reach action potentials and maintain a frequency of more than 0.5 Hz for continuous operation, thereby replacing the traditional linear transformer and improving the above-mentioned deficiencies of the existing technology. Utility Model Content

[0005] The main purpose of the utility model is to provide an electromagnetic stimulation device and a multi-stage boosting device thereof, which utilizes the electronic characteristics of two basic voltage doublers consisting of a current direction limiting element and two energy storage elements, and then realizes a multi-voltage rectification and boosting effect through a series or parallel design architecture, thereby providing high-voltage direct current sufficient to generate the required electromagnetic stimulation intensity, while maintaining the overall lightweight effect.

[0006] To achieve the above-mentioned purpose, the utility model provides a multi-stage boosting device of an electromagnetic stimulation device, which is electrically connected to an external power supply with periodic polarity changes for boosted output application, wherein: the multi-stage boosting device is formed by connecting a plurality of basic voltage multipliers, wherein each of the basic voltage multipliers has a first current direction limiting element, a first energy storage element, a second current direction limiting element and a second energy storage element; the external power supply is electrically connected to the plurality of basic voltage multipliers, and the first current direction limiting element and the first energy storage element of each basic voltage multiplier are electrically connected in series with the external power supply, and the first current direction limiting element is connected in parallel with the second current direction limiting element having a current limiting direction opposite to the first current direction limiting element. element, the second current direction limiting element is connected in series with a second energy storage element so that the second energy storage element is located between the first current direction limiting element and the second current direction limiting element; wherein the first current direction limiting element and the second current direction limiting element of each of the basic voltage doublers are turned on or off according to the polarity of the input voltage, so as to switch the current direction so that the external power supply charges the first energy storage element and the second energy storage element respectively in different cycles, and the charging process of the second energy storage element is provided by the external power supply and the first energy storage element so that the voltage across the second energy storage element is twice that of the first energy storage element, and the plurality of equal second energy storage elements of the plurality of basic voltage doublers are connected in series with each other for output application.

[0007] The first energy storage element and the second energy storage element are one of capacitors, inductors, and batteries, or a combination thereof. The first current direction limiting element and the second current direction limiting element are one of diodes and switches, or a combination thereof. The plurality of second energy storage elements are connected in series to provide a DC voltage of more than 700 volts.

[0008] In addition, the utility model also provides an electromagnetic stimulation device, comprising: the multi-stage boosting device as described above; and a stimulation unit electrically connected to the multi-stage boosting device, thereby achieving the effect of stimulating human body movements after boosting.

[0009] The inductance of the stimulation unit as a magnetic field output end is at least 1 microhenry (μH). The stimulation unit is wound by a copper wire coil or an aluminum wire coil. The surface of the stimulation unit generates a magnetic field exceeding 0.5 Tesla (T) at least once. The surface of the stimulation unit generates a magnetic field exceeding 0.1 Tesla for more than 3 times in a row and the time is less than 1 millisecond (ms).

[0010] In summary, the utility model utilizes the electronic characteristics and arrangement structure of diodes or switches and capacitors or inductors and other components to boost the low voltage input from the external power supply into a high voltage direct current sufficient to supply the stimulation unit with effective action potential. That is, the utility model uses the arrangement design of the components to make the first and second current direction limiting elements conduct or not conduct respectively according to the polarity of the input voltage, thereby switching the energy storage cycle time of the first and second energy storage elements, so that each second energy storage element presents a DC voltage with a cross-voltage of twice the input peak voltage when it reaches steady-state charging, and further, multiple second energy storage elements are connected in series to form a superimposed cross-voltage for output application, thereby, the multi-stage boost device realizes the boost function of multiple voltages, and replaces the traditional linear transformer under the premise of ensuring that the stimulation unit outputs sufficient biological stimulation intensity, so as to improve the overall equipment volume and weight. In addition, through the cross-voltage superposition structure of multiple second energy storage elements, the voltage stress that each energy storage element needs to bear can be reduced, so that the cost of circuit components can be reduced and the circuit stability can be improved. Accordingly, the utility model breaks through the existing technical ruts and only uses common diodes or switches and capacitors or inductors as current direction limiting elements and energy storage elements, and through a special electrical connection integration relationship, it can meet the conditions of a medical-grade electromagnetic stimulation device. At the same time, due to the selection of these components, it has a small size, light weight and fast charging and discharging speed to maintain a better operating frequency, and the total weight of the overall electromagnetic stimulation equipment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of a preferred embodiment of the utility model in which the multi-stage boost device is connected to an external power supply.

[0012] Figure 2 The circuit diagram of a preferred embodiment of the utility model in which the multi-stage boost device is connected to an external power supply.

[0013] Figure 3A , Figure 3B , Figure 3C , Figure 3D It is a schematic diagram of the periodic charging operation of a preferred embodiment of the multi-stage boost device of the utility model connected to an external power supply.

[0014] Figure 4 This is a schematic diagram of the structure of a preferred embodiment of the electromagnetic stimulation device of the present invention connected to an external power supply.

[0015] Explanation of the accompanying drawings: 1-electromagnetic stimulation equipment; 10-multi-stage boosting device; 100-basic voltage multiplier; 1000-first current direction limiting element; 1001-first energy storage element; 1002-second current direction limiting element; 1003-second energy storage element; 11-stimulation unit; 2-external power supply. DETAILED DESCRIPTION

[0016] In order to enable a person skilled in the art with general knowledge in the art to clearly understand the contents of the present invention, the following description is provided with reference to the drawings.

[0017] Please also read Figure 1 and Figure 2 , which are respectively a schematic diagram and a circuit diagram of a preferred embodiment of the utility model of connecting a multi-stage boost device to an external power supply. As shown in the figure, the multi-stage boost device 1 of the electromagnetic stimulation device is provided for electrically connecting an external power supply 2 with periodic polarity changes for boosted output application, and the multi-stage boost device 1 is formed by connecting a plurality of basic voltage multipliers 100. Further, each of the basic voltage multipliers 100 has a first current direction limiting element 1000, a first energy storage element 1001, a second current direction limiting element 1002 and a second energy storage element 1003. The external power source 2 is electrically connected to the plurality of basic voltage multipliers 100, and the first current direction limiting element 1000 and the first energy storage element 1001 of each basic voltage multiplier 100 are electrically connected in series with the external power source 2, and the first current direction limiting element 1000 is connected in parallel with the second current direction limiting element 1002 having a current limiting direction opposite to the first current direction limiting element 1000, and the second current direction limiting element 1002 is connected in series with a second energy storage element 1003 so that the second energy storage element 1003 is located between the first current direction limiting element 1000 and the second current direction limiting element 1002.

[0018] Based on the previous electrical architecture, the first current direction limiting element 1000 and the second current direction limiting element 1002 of each basic voltage doubler 100 are turned on or off according to the polarity of the input voltage, and are used to switch the current direction so that the external power supply 2 charges the first energy storage element 1001 and the second energy storage element 1003 in different cycles, and the charging process of the second energy storage element 1003 is provided by the external power supply 2 and the first energy storage element 1001 so that the cross-voltage of the second energy storage element 1003 is twice that of the first energy storage element 1001. The multiple second energy storage elements 1003 of the multiple basic voltage doublers 100 are connected in series for output application. In other words, the number of the basic voltage doublers 100 can be continuously expanded through the aforementioned electrical connection rules, and the cross-voltage value suitable for terminal output application after boosting can be selected accordingly.

[0019] In this embodiment, the first energy storage element 1001 and the second energy storage element 1003 are capacitors, inductors, batteries, or a combination thereof, and the first current direction limiting element 1000 and the second current direction limiting element 1002 are diodes, switches, or a combination thereof, so that the voltage across the plurality of second energy storage elements 1003 connected in series is a DC current exceeding 700 volts (V). For example, Figure 2 As shown, the plurality of basic voltage doublers 100 can utilize each of the first energy storage elements 1001 and each of the second energy storage elements 1003 as capacitors, and each of the first current direction limiting elements 1000 and each of the second current direction limiting elements 1002 as diodes to form an eight-fold voltage multi-stage boost device 10, which includes four of the basic voltage doublers 100 as described below:

[0020] 1. The first basic voltage multiplier 100:

[0021] The first energy storage element 1001 (C1 -1 ) are respectively coupled to one end of the external power source 2 and the first current direction limiting element 1000 (D1 -1 ) and D1 -1 The other end of D1 is coupled to the other end of the external power source 2. -1 With C1 -1 Electrically, it is connected in series with the external power source 2; at the same time, C1 -1 With D1 -1 The coupling point between the two further couples the first second current direction limiting element 1002 (D2 -1 ), D2 -1 The other end is coupled to the first second energy storage element 1003 (C2 -1 ), D2 -1 Forming parallel D1 -1 The circuit structure has opposite current limiting directions, and C2 -1 The other end is coupled to D1 -1 The connection point between the external power source 2, so that D2 -1 That is, connect C2 in series -1 And make C2 -1 Located in D1 -1 With D2 -1 According to this, the first basic voltage doubler 100 formed as a double voltage boost circuit is connected. When the external power supply 2 is a commercial power supply and provides a sinusoidal AC input with a peak voltage of Vm, C2 -1 There is a 2Vm voltage across both ends.

[0022] 2. The second basic voltage multiplier 100 connected to the first basic voltage multiplier 100:

[0023] The same circuit structure as above is used to form a second voltage doubling circuit connected in parallel with the first basic voltage doubler 100. The second first energy storage element 1001 (C1 -2 ) are respectively coupled to the external power source 2 and C1 -1 and the second first current direction limiting element 1000 (D1-2 ) and D1 -2 The other end is coupled to the external power source 2 and D1 -1 At the same time, C1 -2 With D1 -2 The coupling point between the two further couples the second current direction limiting element 1002 (D2 -2 ), D2 -1 The other end is coupled to the second energy storage element 1003 (C2 -2 ) and C2 -2 The other end is coupled to C2 -1 、D1 -1 and D1 -2 C2 -2 There is a 2Vm voltage across both ends.

[0024] 3. The third basic voltage multiplier 100 connected to the first basic voltage multiplier 100:

[0025] Then, the third voltage doubling circuit is formed. -3 ) are connected to C1 -1 、D1 -1 and D2 -1 and the third first current direction limiting element 1000 (D1 -3 ) and D1 -3 The other end is coupled to D2 -1 and C2 -1 At the same time, C1 -3 With D1 -3 The coupling point between the two further couples the third second current direction limiting element 1002 (D2 -3 ), D2 -3 The other end is coupled to the third second energy storage element 1003 (C2 -3 ) and C2 -3 The other end is coupled to C2 -1 、D2 -1 and D1 -3 C2 -3 There is a 2Vm voltage across both ends.

[0026] 4. The fourth basic voltage multiplier 100 connected to the second basic voltage multiplier 100:

[0027] The fourth voltage doubling circuit is completed. -4 ) are connected to C1 -2 、D1 -2 and D2 -2and the fourth first current direction limiting element 1000 (D1 -4 ) and D1 -4 The other end is coupled to D2 -2 and C2 -2 At the same time, C1 -4 With D1 -4 The coupling point between the fourth second current direction limiting element 1002 (D2 -4 ), D2 -4 The other end is coupled to the fourth second energy storage element 1003 (C2 -4 ) and C2 -4 The other end is coupled to C2 -2 、D2 -2 and D1 -4 C2 -4 There is a 2Vm voltage across both ends.

[0028] Accordingly, the voltage value output by the multi-stage boost device 10 is -3 、C2 -1 、C2 -2 With C2 -4 The multiple second energy storage elements 1003 connected in series form a cross-voltage, so the multi-stage boost device 10 can output a voltage value of 8Vm when the loss is not considered. Therefore, when the external power supply is provided as AC 110V, and the peak voltage Vm reaches 155VDC, the multi-stage boost device 10 can even output about 1200V DC after operation, thereby increasing the small voltage input by the external power supply 2 to a high voltage that meets the requirements of the electromagnetic stimulation device 1.

[0029] Please refer to the above Figure 3A to Figure 3D , which is a schematic diagram of the cycle time charging operation of another preferred embodiment of the utility model. As shown in the figure, the AC voltage provided by the external power supply 2 has a complete sine wave as a cycle (T) and has a sine wave cycle of T1+T2 and a negative sine wave cycle of T3+T4. Therefore, the charging operation process of the plurality of basic voltage multipliers 100 in each cycle time is as follows:

[0030] 1. Figure 3A , in the T1 cycle time:

[0031] When the external power source 2 provides an AC voltage from 0 to the peak +Vm, so that a voltage difference gradually occurs at the input end of the multi-stage boost device 10, D2 -1 and D1 -2 Conducting, so that the external power supply 2, C1 -1 、D2 -1 and C2 -1 Form a positive cycle charging circuit L1-T1 At the same time, the external power supply 2, C1 -2 and D1 -2 Form a positive cycle charging circuit L2 -T1 . Accordingly, the current flows into C1 -1 、C2 -1 and C1 -2 Until the T1 cycle time ends, C1 -1 and C2 -1 Energy storage to half peak value and C1 -2 Store energy to peak value.

[0032] 2. Figure 3B , in the T2 cycle time:

[0033] The external power supply 2 provides an AC voltage that decreases from the peak +Vm to 0. At this time, D1 -3 and D2 -2 Due to the characteristics of the component, it is turned on, and the current flows through C2 -1 Flow into C1 -3 , and by C1 -2 Flow into C2 -2 Until the T2 cycle time ends, C1 -1 、C2 -1 、C1 -3 、C1 -2 and C2 -2 In other words, during the T2 period, when the voltage difference between the two input terminals of the multi-stage boost device 10 coupled to the external power source 2 is reduced, the external power source 2 and C1 -1 、C2 -1 、D1 -3 and C1 -3 Form a positive cycle balance loop L1 -T2 At the same time, the external power supply 2, C1 -2 、C2 -2 and D2 -2 Form a positive cycle balance loop L2 -T2 .

[0034] 3. Figure 3C , in the T3 cycle time:

[0035] When the external power source 2 provides an AC voltage that decreases from 0 to a peak-valley voltage of -Vm, and a voltage difference is generated again at the two input ends of the multi-stage boost device 10, D1 -1 and D2 -2 Due to the characteristics of the components, the external power supply 2 and C1 are turned on. -1 and D1 -1 Form a negative cycle charging circuit L1 -T3 At the same time, the external power supply 2, C1 -2、D2 -2 and C2 -2 Form a negative cycle charging loop L2 -T3 , thereby causing the current to flow into C1 -1 、C1 -2 and C2 -2 , for C1 -1 Energy storage to peak value and C1 -2 and C2 -2 Energy storage to half peak value.

[0036] 4. Figure 3D , in the T4 cycle time:

[0037] The external power supply 2 provides an AC voltage from peak-to-valley -Vm to 0. At this time, D1 -3 and D1 -4 Due to the conduction characteristics of the component, the current flows from C1 -1 Flow into C1 -3 , and by C2 -2 Flow into C1 -4 Until the T4 cycle time ends, C1 -1 、C1 -3 、C1 -2 、C2 -2 and C1 -4 In other words, during the T4 period, when the voltage difference at the input end of the multi-stage boost device 10 is reduced, the external power source 2 and C1 -1 、C1 -3 and D1 -3 Form a negative cycle balance loop L1 -T4 At the same time, the external power supply 2, C1 -2 、C2 -2 、D1 -4 and C1 -4 Form a negative cycle balance loop L2 -T4 .

[0038] It can be seen that as the cycle time T1 to T4 progresses, each of the first and second energy storage elements 1001 and 1003 in each basic voltage doubler 100 will sequentially store energy to a stable state. In this way, after the AC sine wave input by the external power supply 2 performs a cyclic charging action for a cycle time of T1 to T4 until a stable state is reached, the capacitor voltage of each first energy storage element 1001 and each second energy storage element 1003 will reach a balanced electric energy, so that C2 -3 、C2 -1 、C2 -2 and C2 -4Charged to twice the input peak voltage Vm, the voltage value output by the multi-stage boost device 10 is the series cross-voltage of the plurality of second energy storage elements 1003: a DC voltage value of 8Vm. It is worth noting that even if a higher output voltage value is required due to actual conditions, through the use of the plurality of basic voltage doublers 100 of the utility model, it is still easy to further connect and extend one, two or more basic voltage doublers 100 on the circuit of the current multi-stage boost device 10, thereby expanding the voltage output capacity of the multi-stage boost device 10. Moreover, by achieving an eight-fold voltage boosting means through the structure of such a series circuit, the voltage stress that each energy storage element needs to bear can be greatly reduced, so as to reduce the overall circuit architecture cost and achieve the effect of improving circuit stability.

[0039] Furthermore, another object of the present invention is to utilize the aforementioned multi-stage booster device 10 to assemble an electromagnetic stimulation device 1 for use at home or in similar places. Figure 4 As shown, the electromagnetic stimulation device 1 is provided with the multi-stage boost device 10 and a stimulation unit 11, and the stimulation unit 11 is formed by winding a copper wire coil or an aluminum wire coil and is electrically connected to the multi-stage boost device 10, so as to capture the DC voltage value output by the multi-stage boost device 10 to form action power. It is worth noting that in order for the electromagnetic stimulation device 1 to present a better improvement effect, the inductance value of the stimulation unit 11 as the magnetic field output end is set to at least 1 microhenry (μH) to assist the cross-voltage value output provided by the multi-stage boost device 10, and the surface of the stimulation unit 11 generates a magnetic field exceeding 0.5 Tesla (T) at least once; or, the surface of the stimulation unit 11 continuously generates a magnetic field exceeding 0.1 Tesla for more than 3 times and the time is less than 1 millisecond (ms), thereby improving the adaptability of the human body. Specifically, the stimulation unit 11 can release the energy after being fully charged through the energy storage device connected to the front end, thereby achieving a large current change amount to generate the corresponding stimulation magnetic field specifications as mentioned above.

[0040] In summary, the utility model utilizes the electronic characteristics and arrangement structure of diodes or switches and capacitors or inductors and other components to convert the low voltage input from the external power supply into a high voltage direct current sufficient to supply the stimulation unit with effective action potential. That is, the utility model is to make each first and second current direction limiting element conduct or not conduct according to the polarity of the input voltage through the arrangement design of the components, thereby switching the energy storage cycle time of each first and second energy storage element, so that each second energy storage element presents a DC voltage with a cross voltage twice the input peak voltage when reaching steady-state charging, and further, a plurality of the second energy storage elements are connected in series to form a superimposed cross voltage for output application, thereby, the multi-stage boost device realizes the boost function of multiple voltages, and replaces the traditional linear transformer under the premise of ensuring that the stimulation unit outputs sufficient biological stimulation intensity, so as to achieve the effect of improving the volume and weight of the overall equipment. In addition, through the cross voltage superposition structure of multiple second energy storage elements, the voltage stress that each energy storage element needs to bear can be reduced, so that the cost of circuit components can be reduced and the stability of the circuit can be improved. Accordingly, the utility model breaks through the existing technical ruts and only uses common diodes or switches and capacitors or inductors as current direction limiting elements and energy storage elements, and through a special electrical connection integration relationship, it can meet the conditions of a medical-grade electromagnetic stimulation device. At the same time, due to the selection of these components, it has a small size, light weight and fast charging and discharging speed to maintain a better operating frequency, and the total weight of the overall electromagnetic stimulation equipment can be reduced.

[0041] The above description is only a preferred embodiment of the present utility model, and is not intended to limit the scope of implementation of the present utility model; therefore, equivalent changes and modifications made without departing from the spirit and scope of the present utility model should all be included in the protection scope of the present utility model. In addition, in the description of the present utility model, it should be noted that the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should also be noted that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A multi-stage boost device for electromagnetic stimulation equipment, which is electrically connected to an external power source with periodic polarity changes for boosted output application, characterized in that: The multi-stage boost device is formed by connecting a plurality of basic voltage multipliers, wherein each of the basic voltage multipliers has a first current direction limiting element, a first energy storage element, a second current direction limiting element and a second energy storage element; the external power supply is electrically connected to the plurality of basic voltage multipliers, and the first current direction limiting element and the first energy storage element of each basic voltage multiplier are electrically connected in series with the external power supply, and the first current direction limiting element is connected in parallel with the second current direction limiting element having a current limiting direction opposite to the first current direction limiting element, and the second current direction limiting element is connected in series with a second energy storage element so that the second energy storage element is in a between the first current direction limiting element and the second current direction limiting element; wherein the first current direction limiting element and the second current direction limiting element of each basic voltage doubler are turned on or off according to the polarity of the input voltage, so as to switch the current direction so that the external power supply can charge the first energy storage element and the second energy storage element respectively in different cycles, and the charging process of the second energy storage element is provided by the external power supply and the first energy storage element so that the voltage across the second energy storage element is twice that of the first energy storage element, and the plurality of second energy storage elements of the plurality of basic voltage doublers are connected in series with each other for output application.

2. The multi-stage boosting device according to claim 1, characterized in that: The first energy storage element and the second energy storage element are capacitors, inductors, batteries or a combination thereof.

3. The multi-stage boosting device according to claim 1, characterized in that: The first current direction limiting element and the second current direction limiting element are diodes, switches or a combination thereof.

4. The multi-stage boosting device according to claim 1, characterized in that: After the plurality of second energy storage elements are connected in series, the voltage across the plurality of second energy storage elements is a direct current exceeding 700 volts.

5. An electromagnetic stimulation device, characterized in that: Include: A multi-stage booster device as claimed in any one of claims 1 to 4; and A stimulation unit is electrically connected to the multi-stage boosting device.

6. The electromagnetic stimulation device according to claim 5, characterized in that The inductance value of the stimulation unit as a magnetic field output is at least 1 microhenry.

7. The electromagnetic stimulation device according to claim 5, characterized in that The stimulation unit is formed by winding a copper wire coil or an aluminum wire coil.

8. The electromagnetic stimulation device according to claim 5, characterized in that The surface of the stimulation unit generates a magnetic field exceeding 0.5 Tesla at least once.

9. The electromagnetic stimulation device according to claim 5, characterized in that The surface of the stimulation unit continuously generates a magnetic field exceeding 0.1 Tesla for more than three times and for a time less than 1 millisecond.

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