Non-contact electric energy transmission atomizing sheet working circuit, working method and atomizer

Abstract

The invention relates to the technical field of atomizers, and provides a non-contact electric energy transmission atomizing sheet working circuit, a working method and an atomizer, the non-contact electric energy transmission atomizing sheet working circuit comprises a control circuit, a driving circuit, a sampling circuit, an inverter circuit, a transmitting resonance circuit, a receiving resonance circuit and an atomizing sheet; the sampling circuit collects an electric energy feedback signal of the emission resonance circuit and outputs the signal to the control circuit, the control circuit adjusts a driving frequency according to the electric energy feedback signal and outputs the signal to the driving circuit, the driving circuit drives according to the driving frequency, and the inverter circuit adjusts electric energy output according to driving of the driving circuit; the receiving resonance circuit is electrically connected with the atomization sheet and forms a resonance state with the transmitting resonance circuit, and electric energy is wirelessly transmitted to the atomization sheet through the transmitting resonance circuit and the receiving resonance circuit; the wireless power transmission circuit and the atomization piece driving circuit are integrated, non-contact driving of the atomization piece is effectively achieved, the application effect is good, and the production and application cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of atomizers, and more specifically, to a non-contact electric energy transmission atomizer sheet working circuit, working method and atomizer. Background Art

[0002] Atomizer is a device used to atomize liquid. There are many types of atomizers. According to different uses, they can be divided into air humidifiers, medical atomizers, and tobacco oil atomizers. The atomizer is an important component of the atomizer to achieve liquid atomization. The atomizer mainly generates water mist through the vibration of the atomizer. Conventional atomizers often require a high-frequency oscillation circuit to drive the atomizer. Therefore, for the working circuit of the existing atomizer, it is usually necessary to directly connect the power supply circuit to the atomizer to provide electrical energy, and directly drive the atomizer through the drive circuit electrically connected to the atomizer. The layout is to directly set the atomizer and the corresponding drive circuit in a container. The water mist generated when the atomizer is working can easily affect the corresponding drive circuit, such as causing a short circuit or damage to the circuit. In addition, the atomizer needs to be disassembled as a whole when cleaning or maintaining it, and the production and application costs are relatively high.

[0003] Application Contents

[0004] The technical problem to be solved by the present application is to provide an atomizer working circuit, working method and atomizer for contactless power transmission in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by this application to solve its technical problem is:

[0006] On the one hand, the present application provides a contactless electric energy transmission atomizer sheet working circuit, including a control circuit, a drive circuit, a sampling circuit, an inverter circuit, a transmitting resonant circuit, a receiving resonant circuit and an atomizer sheet; the inverter circuit is electrically connected to the drive circuit and the transmitting resonant circuit respectively, the transmitting resonant circuit is also electrically connected to the sampling circuit, the sampling circuit is also electrically connected to the control circuit, and the control circuit is also electrically connected to the drive circuit; the sampling circuit collects the electric energy feedback signal of the transmitting resonant circuit and outputs it to the control circuit, the control circuit adjusts the driving frequency according to the electric energy feedback signal and outputs it to the drive circuit, the drive circuit is driven according to the driving frequency, and the inverter circuit adjusts the electric energy output according to the driving of the drive circuit; the receiving resonant circuit is electrically connected to the atomizer sheet and forms a resonant state with the transmitting resonant circuit, and the electric energy is wirelessly transmitted to the atomizer sheet through the transmitting resonant circuit and the receiving resonant circuit.

[0007] In some embodiments, the sampling circuit includes a current sensor and an operational amplifier. The current sensor collects the current signal of the transmitting resonant circuit and outputs it to the control circuit through operational amplification.

[0008] In some embodiments, the inverter circuit includes a first capacitor, a first MOS tube, a second MOS tube, a third MOS tube and a fourth MOS tube; the two ends of the first capacitor are electrically connected to the positive and negative electrodes of a power supply respectively; the drains of the first MOS tube and the third MOS tube are electrically connected to the positive electrode of the power supply, and the sources of the second MOS tube and the fourth MOS tube are electrically connected to the negative electrode of the power supply; the source of the first MOS tube and the drain of the second MOS tube are electrically connected to one end of the transmitting resonant circuit, and the source of the third MOS tube and the drain of the fourth MOS tube are electrically connected to the other end of the transmitting resonant circuit.

[0009] In some embodiments, the transmitting resonant circuit includes a first inductor and a second capacitor; one end of the first inductor is electrically connected to the source of the first MOS tube and the drain of the second MOS tube, respectively, the other end of the first inductor is electrically connected to one end of the second capacitor, and the other end of the second capacitor is electrically connected to the source of the third MOS tube and the drain of the fourth MOS tube, respectively.

[0010] In some embodiments, the receiving resonant circuit includes a second inductor and a third capacitor; two ends of the second inductor are electrically connected to two ends of the atomizer sheet respectively, and the third capacitor is connected in parallel with the second inductor.

[0011] In some embodiments, the equivalent circuit of the atomizer sheet includes a first resistor and a fourth capacitor; the fourth capacitor is connected in parallel with the third capacitor, and the first resistor is connected in parallel with the fourth capacitor.

[0012] In some embodiments, the equivalent circuit of the atomizer sheet further includes a third inductor and a fifth capacitor; the third inductor, the fifth capacitor and the first resistor are sequentially connected in series and then connected in parallel with the fourth capacitor.

[0013] In some embodiments, the third capacitor and the fourth capacitor are combined to form an equivalent capacitor.

[0014] On the other hand, the present application also provides a method for operating an atomizer sheet for contactless power transmission, which is applied to any of the above-mentioned atomizer sheet operating circuits for contactless power transmission, and the method comprises the following steps:

[0015] Set the driving waveform of the atomizer to be a sine wave of the resonant frequency of the atomizer;

[0016] By adjusting the pulse width of the full bridge, the voltage entering the resonant compensation can be adjusted;

[0017] The working voltage of the atomizer sheet is adjusted by the voltage entering the resonance compensation, and the output power of the atomizer sheet is changed to adjust the working intensity of the atomizer sheet.

[0018] On the other hand, the present application also provides an atomizer, comprising an atomizer sheet working circuit for contactless power transmission as described in any of the above items.

[0019] The beneficial effects of the present application are as follows: Different from the prior art, the contactless power transmission atomizer sheet working circuit of the present application includes a control circuit, a drive circuit, a sampling circuit, an inverter circuit, a transmitting resonant circuit, a receiving resonant circuit and an atomizer sheet; the sampling circuit collects the power feedback signal of the transmitting resonant circuit and outputs it to the control circuit, the control circuit adjusts the driving frequency according to the power feedback signal and outputs it to the driving circuit, the driving circuit drives according to the driving frequency, and the inverter circuit adjusts the power output according to the driving of the driving circuit; the receiving resonant circuit is electrically connected to the atomizer sheet and forms a resonant state with the transmitting resonant circuit, and the power is wirelessly transmitted to the atomizer sheet through the transmitting resonant circuit and the receiving resonant circuit; the wireless power transmission and the atomizer sheet driving circuit are integrated into one, and the contactless driving of the atomizer sheet is effectively realized. The atomizer sheet can be placed in a closed container, and the corresponding driving circuit can transmit power and stimulate the atomizer sheet to work outside the closed container, which simplifies the structure of the atomizer, improves reliability, simplifies maintenance, and reduces production and application costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a principle block diagram of the working circuit of the atomizer sheet for contactless power transmission in the embodiment of the present application;

[0021] Figure 2 It is a circuit diagram of the working circuit of the atomizer sheet for contactless power transmission in the embodiment of the present application;

[0022] Figure 3 is a schematic diagram of an equivalent circuit of an atomizer sheet in an embodiment of the present application;

[0023] Figure 4 is another schematic diagram of an equivalent circuit of the atomizer sheet in an embodiment of the present application;

[0024] Figure 5 is another schematic diagram of an equivalent circuit of the atomizer sheet in an embodiment of the present application;

[0025] Figure 6 It is a flow chart of the implementation method of the atomizer sheet working method of non-contact power transmission in the embodiment of the present application;

[0026] The names and serial numbers in the figure are: control circuit-1; drive circuit-2; sampling circuit-3; inverter circuit-4; transmitting resonant circuit-5; receiving resonant circuit-6; atomizer-7; current sensor-31; operational amplifier-32. DETAILED DESCRIPTION

[0027] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0030] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" etc. indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0032] Embodiment 1: Figure 1The principle block diagram of the working circuit of the atomizer sheet for contactless power transmission is shown. The working circuit of the atomizer sheet for contactless power transmission of this embodiment includes a control circuit 1, a drive circuit 2, a sampling circuit 3, an inverter circuit 4, a transmitting resonant circuit 5, a receiving resonant circuit 6 and an atomizer sheet 7; the inverter circuit 4 is electrically connected to the drive circuit 2 and the transmitting resonant circuit 5 respectively, the transmitting resonant circuit 5 is also electrically connected to the sampling circuit 3, the sampling circuit 3 is also electrically connected to the control circuit 1, and the control circuit 1 is also electrically connected to the drive circuit 2; the sampling circuit 3 collects the electric energy feedback signal of the transmitting resonant circuit 5 and outputs it to the control circuit 1, the control circuit 1 adjusts the driving frequency according to the electric energy feedback signal and outputs it to the drive circuit 2, the drive circuit 2 is driven according to the driving frequency, and the inverter circuit 4 adjusts the electric energy output according to the drive of the drive circuit 2; the receiving resonant circuit 6 is electrically connected to the atomizer sheet 7 and forms a resonant state with the transmitting resonant circuit 5, and the electric energy is wirelessly transmitted to the atomizer sheet 7 through the transmitting resonant circuit 5 and the receiving resonant circuit 6.

[0033] Figure 2 The circuit diagram of the working circuit of the atomizer sheet for contactless power transmission is shown. Specifically, the sampling circuit 3 includes a current sensor 31 and an operational amplifier 32. The current sensor 31 collects the current signal of the transmitting resonant circuit 5 and outputs it to the control circuit 1 through operational amplification. The inverter circuit 4 includes a first capacitor Cbus, a first MOS tube Q1, a second MOS tube Q2, a third MOS tube Q3 and a fourth MOS tube Q4; the two ends of the first capacitor Cbus are electrically connected to the positive and negative electrodes of the power supply; the drains of the first MOS tube Q1 and the third MOS tube Q3 are electrically connected to the positive electrode of the power supply, and the sources of the second MOS tube Q2 and the fourth MOS tube Q4 are electrically connected to the negative electrode of the power supply; the source of the first MOS tube Q1 and the drain of the second MOS tube Q2 are electrically connected to one end of the transmitting resonant circuit 5, and the source of the third MOS tube Q3 and the drain of the fourth MOS tube Q4 are electrically connected to the other end of the transmitting resonant circuit 5. Among them, the driving circuit 2 has four-way driving to correspondingly control the first MOS tube Q1, the second MOS tube Q2, the third MOS tube Q3 and the fourth MOS tube Q4. The first MOS transistor Q1, the second MOS transistor Q2, the third MOS transistor Q3 and the fourth MOS transistor Q4 are all N-type MOS transistors. The control circuit 1 includes an MCU, and the main control function is realized by the MCU. The power supply adopts a DC power input.

[0034] Specifically, the transmitting resonant circuit 5 includes a first inductor coil Lp and a second capacitor Cp; one end of the first inductor coil Lp is electrically connected to the source of the first MOS tube Q1 and the drain of the second MOS tube Q2, respectively, the other end of the first inductor coil Lp is electrically connected to one end of the second capacitor Cp, and the other end of the second capacitor Cp is electrically connected to the source of the third MOS tube Q3 and the drain of the fourth MOS tube Q4, respectively. The receiving resonant circuit 6 includes a second inductor coil Ls and a third capacitor Cs; the two ends of the second inductor coil Ls are electrically connected to the two ends of the atomizer sheet 7, respectively, and the third capacitor Cs is connected in parallel with the second inductor coil Ls. By integrating wireless power transmission and atomizer sheet drive circuit into one, the integration is high, non-contact driving of the atomizer sheet 7 is effectively realized, and the production and application costs are low.

[0035] Further, such as Figure 3 As shown in the figure, the equivalent circuit of the atomizer sheet 7 includes a first resistor R0 and a fourth capacitor C1; the fourth capacitor C1 is connected in parallel with the third capacitor Cs, and the first resistor R0 is connected in parallel with the fourth capacitor C1 to form an equivalent circuit of the receiving part, which is convenient for the design and analysis of the atomizer sheet 7 circuit.

[0036] like Figure 4 As shown in , the equivalent circuit of the atomizer sheet 7 also includes a third inductor L0 and a fifth capacitor C0; the third inductor L0, the fifth capacitor C0 and the first resistor R0 are sequentially connected in series and then connected in parallel with the fourth capacitor C1 to form an equivalent circuit of the receiving part in the resonant state.

[0037] like Figure 5 As shown in , the third capacitor Cs and the fourth capacitor C1 are combined to form an equivalent capacitor Cs1, that is, an equivalent circuit after the receiving part Cs and C1 are combined.

[0038] It should be noted that, in this embodiment, the circuit structures of the control circuit 1 and the drive circuit 2 are relatively existing. In practical applications, any suitable circuit in the prior art may be referred to to achieve the drive control of the atomizer sheet, and this embodiment does not make any specific limitation.

[0039] Embodiment 2: Figure 6 The flowchart of the implementation of the atomizer sheet working method of non-contact power transmission is shown. The atomizer sheet working method of non-contact power transmission is applied to the atomizer sheet working circuit of non-contact power transmission provided in the above embodiment 1 to realize the working control of the atomizer sheet 7. Specifically, the method includes the following steps, please refer to steps S1-S3:

[0040] S1: Setting the driving waveform of the atomizer sheet 7 to be a sine wave of the resonance frequency of the atomizer sheet 7;

[0041] S2: Adjust the voltage entering the resonance compensation by adjusting the pulse width of the full bridge;

[0042] S3: adjusting the working voltage of the atomizer sheet 7 by the voltage entering the resonance compensation, changing the output power of the atomizer sheet 7, so as to adjust the working intensity of the atomizer sheet 7.

[0043] The following describes the selection of relevant parameters in practical application in combination with the atomizer working circuit of the contactless power transmission in the first embodiment:

[0044] According to the resonant frequency f of the atomizer 7, the angular frequency is obtained according to formula (1):

[0045] ω=2πf(1)

[0046] Or select appropriate Ls and Cs1 according to formula (2) to match the angular frequency:

[0047]

[0048] The voltage gain is calculated according to formula (3):

[0049]

[0050] Where M is the mutual inductance between the coils;

[0051] According to the working voltage, working frequency and mutual inductance of the atomizer 7, appropriate Ls, Lp and Cs can be selected. After Lp, Ls and Cs are determined, Cp is calculated according to formulas (4) and (5):

[0052]

[0053] Where K is the coupling coefficient between the coils.

[0054] Embodiment 3: The embodiment of the present application also provides an atomizer, which includes the atomizer sheet working circuit for contactless power transmission provided in the above embodiment 1. By adopting the atomizer sheet working circuit for contactless power transmission, the atomizer sheet 7 and the corresponding drive circuit can be non-contact controlled and driven, and the atomizer sheet 7 can be placed in a closed container, and the corresponding drive circuit can transmit power and stimulate the atomizer sheet 7 to work outside the closed container. Among them, the atomizer sheet 7 is, for example, a piezoelectric ceramic sheet.

[0055] It should be noted that the present embodiment does not specifically limit the model and structure of the atomizer, which shall be subject to actual application.

[0056] It should be understood that ordinary technical workers in the field can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A non-contact power transmission atomizer working circuit, characterized in that: It includes a control circuit, a driving circuit, a sampling circuit, an inverter circuit, a transmitting resonant circuit, a receiving resonant circuit and an atomizer sheet; the inverter circuit is electrically connected to the driving circuit and the transmitting resonant circuit respectively, the transmitting resonant circuit is also electrically connected to the sampling circuit, the sampling circuit is also electrically connected to the control circuit, and the control circuit is also electrically connected to the driving circuit; the sampling circuit collects the electric energy feedback signal of the transmitting resonant circuit and outputs it to the control circuit, the control circuit adjusts the driving frequency according to the electric energy feedback signal and outputs it to the driving circuit, the driving circuit is driven according to the driving frequency, and the inverter circuit adjusts the electric energy output according to the driving of the driving circuit; the receiving resonant circuit is electrically connected to the atomizer sheet and forms a resonant state with the transmitting resonant circuit, and the electric energy is wirelessly transmitted to the atomizer sheet through the transmitting resonant circuit and the receiving resonant circuit.

2. The atomizer working circuit for contactless power transmission according to claim 1, characterized in that: The sampling circuit includes a current sensor and an operational amplifier. The current sensor collects the current signal of the transmitting resonant circuit and outputs it to the control circuit through operational amplification.

3. The atomizer working circuit for contactless power transmission according to claim 1, characterized in that: The inverter circuit includes a first capacitor, a first MOS tube, a second MOS tube, a third MOS tube and a fourth MOS tube; two ends of the first capacitor are electrically connected to the positive and negative electrodes of a power supply respectively; the drains of the first MOS tube and the third MOS tube are electrically connected to the positive electrode of the power supply, and the sources of the second MOS tube and the fourth MOS tube are electrically connected to the negative electrode of the power supply; the source of the first MOS tube and the drain of the second MOS tube are electrically connected to one end of the transmitting resonant circuit, and the source of the third MOS tube and the drain of the fourth MOS tube are electrically connected to the other end of the transmitting resonant circuit.

4. The atomizer working circuit for contactless power transmission according to claim 3, characterized in that: The transmitting resonant circuit includes a first inductor and a second capacitor; one end of the first inductor is electrically connected to the source of the first MOS tube and the drain of the second MOS tube, respectively, the other end of the first inductor is electrically connected to one end of the second capacitor, and the other end of the second capacitor is electrically connected to the source of the third MOS tube and the drain of the fourth MOS tube, respectively.

5. The atomizer working circuit for contactless power transmission according to claim 1, characterized in that: The receiving resonant circuit includes a second inductor and a third capacitor; two ends of the second inductor are electrically connected to two ends of the atomizer sheet respectively, and the third capacitor is connected in parallel with the second inductor.

6. The atomizer sheet working circuit for contactless power transmission according to claim 5, characterized in that: The equivalent circuit of the atomizer sheet includes a first resistor and a fourth capacitor; the fourth capacitor is connected in parallel with the third capacitor, and the first resistor is connected in parallel with the fourth capacitor.

7. The atomizer sheet working circuit for contactless power transmission according to claim 6, characterized in that: The equivalent circuit of the atomizer sheet further includes a third inductor and a fifth capacitor; the third inductor, the fifth capacitor and the first resistor are sequentially connected in series and then connected in parallel with the fourth capacitor.

8. The atomizer sheet working circuit for contactless power transmission according to claim 6, characterized in that: The third capacitor and the fourth capacitor are combined to form an equivalent capacitor.

9. A method for operating an atomizer sheet for contactless power transmission, applied to the atomizer sheet operating circuit for contactless power transmission as claimed in any one of claims 1 to 8, characterized in that: The method comprises the following steps: Set the driving waveform of the atomizer to be a sine wave of the resonant frequency of the atomizer; By adjusting the pulse width of the full bridge, the voltage entering the resonant compensation can be adjusted; The working voltage of the atomizer sheet is adjusted by the voltage entering the resonance compensation, and the output power of the atomizer sheet is changed to adjust the working intensity of the atomizer sheet.

10. An atomizer, characterized in that: An atomizer sheet working circuit comprising the contactless power transmission as described in any one of claims 1 to 8.

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