CN220423133U - Airflow sensing circuit and electronic atomization device - Google Patents
Airflow sensing circuit and electronic atomization device Download PDFInfo
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- CN220423133U CN220423133U CN202321601089.8U CN202321601089U CN220423133U CN 220423133 U CN220423133 U CN 220423133U CN 202321601089 U CN202321601089 U CN 202321601089U CN 220423133 U CN220423133 U CN 220423133U
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- 238000000889 atomisation Methods 0.000 title claims abstract description 71
- 239000003990 capacitor Substances 0.000 claims description 19
- 230000003993 interaction Effects 0.000 claims description 10
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The application discloses air current sensing circuit and electron atomizing device, this air current sensing circuit includes: the air flow sensor is coupled with the first control circuit of the electronic atomization device and is used for sending a corresponding trigger signal to the first control circuit when the ambient negative pressure is detected to be greater than a threshold value; the input end of the boosting circuit is coupled with the power supply of the electronic atomization device and the first control circuit, and the output end of the boosting circuit is coupled with the atomization component of the electronic atomization device; the boost circuit is used for receiving the control signal sent by the first control circuit and responding to the control signal to provide boosted voltage for the atomization component. The air current sensing circuit of this application provides the atomizing subassembly with the voltage boost back that the power supply of input provided with the mode of high voltage low current, reduces the heat loss of atomizing in-process on the one hand, has promoted electron atomizing device's atomizing power on the other hand.
Description
Technical Field
The application relates to the technical field of electronic atomization devices, in particular to an airflow sensing circuit and an electronic atomization device.
Background
At present, an air flow sensor in an electronic atomization device on the market mainly adopts a technical scheme of setting a direct current-direct current voltage reduction circuit, and the technical scheme of the direct current-direct current voltage reduction circuit has the defect of larger heat loss, so that the atomization power of the electronic atomization device is limited in a smaller interval. Meanwhile, the electronic atomization device in the technical scheme also needs to be equipped with a battery with high platform voltage and low internal resistance, so that the cost of the electronic atomization device is increased.
Disclosure of Invention
The application provides an airflow sensing circuit and an electronic atomization device.
One technical scheme that this application adopted is an air current sensing circuit, and this air current sensing circuit is applied to electron atomizing device, and air current sensing circuit includes:
the air flow sensor is coupled with the first control circuit of the electronic atomization device and is used for sending a corresponding trigger signal to the first control circuit when the ambient negative pressure is detected to be greater than a threshold value;
the input end of the boosting circuit is coupled with the power supply of the electronic atomization device and the first control circuit, and the output end of the boosting circuit is coupled with the atomization component of the electronic atomization device; the boost circuit is used for receiving the control signal sent by the first control circuit and responding to the control signal to provide boosted voltage for the atomization component.
Wherein the boost circuit includes:
the first end of the inductor is coupled with the first end of the power supply;
the first end of the switch unit is coupled with the second end of the inductor, the second end of the switch unit is coupled with the second end of the power supply, and the control end of the switch unit is coupled with the first control circuit;
the anode of the diode is coupled with the second end of the inductor;
the first end of the capacitor is coupled with the cathode of the diode, the second end of the capacitor is coupled with the second end of the power supply, and the capacitor is connected with the atomizing assembly in parallel.
The switch unit comprises a Mos tube, a first end of the Mos tube is coupled with a second end of the inductor, a second end of the Mos tube is coupled with a second end of the power supply, and a control end of the Mos tube is coupled with the first control circuit.
Wherein the diode is a freewheeling diode.
The Boost circuit is any one of a Boost circuit and a charge pump Boost circuit.
Wherein, the control signal is a PWM signal.
Another technical scheme adopted in the application is to provide an electronic atomization device, wherein the electronic atomization device comprises the airflow sensing circuit.
The electronic atomization device comprises an interaction assembly, wherein the interaction assembly is connected with the first control circuit and used for displaying the state of the electronic atomization device.
Wherein the interaction component comprises an indicator light and/or a display screen.
The electronic atomization device comprises a second control circuit, the second control circuit is a main control circuit, and the first control circuit is a power supply control circuit.
The beneficial effects of this application are: the air flow sensing circuit comprises an air flow sensor, a first control circuit, a second control circuit and a control circuit, wherein the first control circuit is coupled with the electronic atomization device and is used for sending a corresponding trigger signal to the first control circuit when the ambient negative pressure is detected to be larger than a threshold value; the input end of the boosting circuit is coupled with the power supply of the electronic atomization device and the first control circuit, the output end of the boosting circuit is coupled with the atomization component of the electronic atomization device, and the boosting circuit is used for receiving the control signal sent by the first control circuit and responding to the control signal to provide boosted voltage for the atomization component. The boost circuit that the air current sensing circuit that this application provided used to provide atomizing subassembly with the voltage boost back that the power supply of input provided, on the one hand reduces the heat loss of atomizing in-process, on the other hand has promoted electron atomizing device's atomizing power. Further, the boost circuit topology adopted by the airflow sensing circuit provided by the application, the electronic atomization device can adopt a power supply with lower platform voltage, and the selection range of materials is widened.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of an airflow sensing circuit provided herein;
FIG. 2 is a schematic diagram of an embodiment of the boost circuit 122 in FIG. 1;
FIG. 3 is a schematic view of an embodiment of an electronic atomizing device according to the present disclosure;
fig. 4 is a schematic structural diagram of another embodiment of the electronic atomizing device provided in the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terms "first," "second," and the like in this application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, or apparatus that comprises a series of steps or elements is not limited to the listed steps or elements but may alternatively include steps or elements not listed or may alternatively include other steps or elements inherent to such process, method, or apparatus.
Through a period of research, the inventor of the application finds that the current common air flow sensor of the electronic atomization device adopts a depressurization type scheme, and the heat loss generated in the atomization process is larger, so that the atomization power of the electronic atomization device is limited in a certain range. Based on this, common improvements include a higher plateau voltage, lower internal resistance electronic atomizing device power supply (battery) or lower internal resistance main power switching tube. The improvement scheme can obviously increase the cost of the electronic atomization device, and also reduces the selectable range of materials due to higher parameter requirements on the materials.
The application mainly designs a set of air flow sensing circuit for reducing the heat loss in the atomization process of the electronic atomization device, and unlike a traditional method, the application sets the booster circuit in the air flow sensing circuit, so that the heat loss in the atomization process can be reduced, the atomization power can be improved, and the selection range of materials can be widened.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an airflow sensing circuit provided in the present application.
The airflow sensing circuit 12 provided by the application is applied to the electronic atomization device 10, and the electronic atomization device 10 comprises a power supply 11, a first control circuit 13 and an atomization component 14 besides the airflow sensing circuit 12.
Specifically, the airflow sensing circuit 12 includes an airflow sensor 121 and a booster circuit 122. Wherein the air flow sensor 121 is coupled to the first control circuit 13. The airflow sensor 121 is configured to send a corresponding trigger signal to the first control circuit 13 when detecting that the ambient negative pressure is greater than a threshold value. Alternatively, the trigger signal may be a rising edge signal, a falling edge signal, or a pulse signal, which is not limited herein.
The input end of the boost circuit 122 in this embodiment is coupled to the power source 11 and the first control circuit 13, respectively, and the output end of the boost circuit 122 is coupled to the atomizing assembly 14. The boost circuit 122 is configured to receive the control signal sent by the first control circuit 13, and provide the boosted voltage to the atomizing assembly 14 in response to the control signal.
Alternatively, the first control circuit 13 may be provided in the air flow sensing circuit 12, or may be provided in other components of the electronic atomizing device 10. In some embodiments, the first control circuit 13 is disposed in a main control chip MCU (not shown) of the electronic atomizing device.
Alternatively, the Boost circuit 122 is any one of a Boost circuit and a charge pump Boost circuit.
Optionally, the control signal sent by the first control circuit is a PWM signal.
According to the scheme, the voltage provided by the power supply at the input end is boosted in a high-voltage low-current mode and then is provided for the atomization assembly, so that on one hand, the heat loss in the atomization process is reduced, and on the other hand, the atomization power of the electronic atomization device is improved. Further, the boost circuit topology adopted by the airflow sensing circuit provided by the application, the electronic atomization device can adopt a power supply with lower platform voltage, and the selection range of materials is widened.
Fig. 2 is a schematic diagram of an embodiment of the boost circuit 122 in fig. 1.
As shown in fig. 2, the Boost circuit 122 in the present embodiment is a Boost circuit, and the Boost circuit 122 includes an inductance L, a switching unit S, a diode VD, and a capacitance C.
The first terminal of the inductor L in this embodiment is coupled to the first terminal of the power supply 11. Specifically, the first terminal of the power supply 11 is the positive electrode of the power supply 11.
In this embodiment, a first terminal of the switching unit S is coupled to a second terminal of the inductor L, a second terminal of the switching unit S is coupled to a second terminal of the power source 11, and a control terminal of the switching unit S is coupled to the first control circuit 13. Specifically, the second terminal of the power supply 11 is the negative electrode of the power supply 11.
Alternatively, the switching unit S may include a Mos transistor, a first end of which is coupled to the second end of the inductor L, a second end of which is coupled to the second end of the power source 11, and a control end of which is coupled to the first control circuit 13.
In some embodiments, the control signal sent by the first control circuit 13 to the control end of the Mos tube is a PWM signal, and when the control end of the Mos tube receives a low-level signal, the Mos tube is turned off; when the control end of the Mos tube receives the high-level signal, the Mos tube is conducted. In some applications, the first control circuit 13 adjusts the voltage value provided by the atomizing assembly 14 by the boost circuit 122 by adjusting the duty cycle of the PWM signal. For example, the larger the duty cycle of the PWM signal, the greater the value of the output voltage that the boost circuit 122 provides to the atomizing assembly 14.
Further, the anode of the diode VD is coupled to the second end of the inductor L. By arranging the diode VD in the boost circuit, the power loss generated by the circulation current when the Mos tube is turned off is prevented.
Optionally, the diode VD is a freewheeling diode. By providing a flywheel diode in the booster circuit, abrupt changes in voltage and/or current in the booster circuit 122 are prevented, and a power consumption path is also provided for the counter electromotive force generated in the booster circuit 122.
In this embodiment, the first end of the capacitor C is coupled to the cathode of the diode VD, the second end of the capacitor C is coupled to the second end of the power source 11, i.e. the second end of the capacitor C is coupled to the cathode of the power source 11, and further, the capacitor C is connected in parallel to the atomizing assembly 14.
When the switch unit S is closed, the power supply 11, the inductor L and the switch unit S form a loop, at the moment, the power supply 11 charges the inductor L, the magnetic field energy stored by the inductor L is increased, the capacitor C connected with the atomizing assembly in parallel is discharged at the moment, and the voltage at the two ends of the capacitor C is not suddenly changed.
When the switch unit S is disconnected, the diode VD is conducted under the forward voltage, and the magnetic field energy stored by the inductor L passes through the diode VD to obtain an inductor voltage U L Charge capacitor C and power supply 11 also inputs voltage U through diode VD i Charging the capacitor C, and superposing the capacitor C and the capacitor C to obtain a capacitor voltage U C . Wherein the capacitance voltage satisfies the following relationship:
U C ＝U i +U L
it will be appreciated that since the capacitor C is connected in parallel with the atomizing assembly 14, the output voltage obtained by the atomizing assembly 14 is equal to the capacitor voltage, i.e., the output voltage is greater than the input voltage.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of an electronic atomization device provided in the present application.
The electronic atomization device 20 specifically includes a power supply 21, an airflow sensing circuit 22, a first control circuit 23, an atomization assembly 24, and an interaction assembly 25.
Specifically, the airflow sensing circuit 22 includes an airflow sensor 221 and a booster circuit 222. Wherein the air flow sensor 221 is coupled to the first control circuit 23. The airflow sensor 221 is configured to send a corresponding trigger signal to the first control circuit 23 when detecting that the ambient negative pressure is greater than the threshold value.
The input end of the boost circuit 222 in this embodiment is coupled to the power source 21 and the first control circuit 23, respectively, and the output end of the boost circuit 122 is coupled to the atomizing assembly 24. The boost circuit 222 is configured to receive the control signal sent by the first control circuit 23, and provide a boosted voltage to the atomizing assembly in response to the control signal.
The interaction assembly 25 in this embodiment is connected to the first control circuit 23 for displaying the status of the electronic atomizing device 20.
Optionally, the interaction component 25 comprises an indicator light and/or a display screen. For example, the interaction component 25 is an LED indicator for displaying whether the current ambient negative pressure value obtained by the airflow sensor is greater than a threshold value. For another example, the interaction component 25 is a display screen for displaying the current operating state of the electronic atomizing device, such as the power supply residual power value.
Optionally, the electronic atomizing device 20 further comprises a second control circuit (not shown). In some embodiments, the second control circuit is a main control circuit, and the first control circuit 23 is a power supply control circuit.
In some application scenarios, the first control circuit 23 and the second control circuit are respectively disposed in a main control chip MCU (not shown) of the electronic atomizing device 20. In some application scenarios, the first control circuit 23 and the second control circuit are respectively disposed in the airflow sensing circuit 12 of the electronic atomizing device 20. In some application scenarios, the first control circuit 23 is disposed in the airflow sensing circuit 12, and the second control circuit is disposed in the main control chip MCU of the electronic atomizing device 20.
According to the scheme, the voltage provided by the power supply at the input end is boosted in a high-voltage low-current mode and then is provided for the atomization assembly, so that on one hand, the heat loss in the atomization process is reduced, and on the other hand, the atomization power of the electronic atomization device is improved. Further, the boost circuit topology adopted by the airflow sensing circuit provided by the application, the electronic atomization device can adopt a power supply with lower platform voltage, and the selection range of materials is widened.
With continued reference to fig. 4, fig. 4 is a schematic structural diagram of another embodiment of the electronic atomization device provided in the present application. The electronic atomizing device 30 of the present embodiment includes a battery module 31, an airflow sensor module 32, a microprocessor module 33, an atomizer module 34, and a display module 35.
Wherein the battery module 31, the air flow sensor module 32, the atomizer module 34, and the display module 35 are respectively coupled with the microprocessor module 33. More specifically, the battery module 31 is coupled to an input of the microprocessor module 33, and the atomizer module 34 is coupled to an output of the microprocessor module 33.
It should be noted that the airflow sensor module 32 and the microprocessor 33 in the present embodiment are both disposed in the airflow sensor of the electronic atomizing device 30.
In some application scenarios, the airflow sensor module 32 is configured to detect whether the ambient negative pressure is greater than a preset threshold, and if the ambient negative pressure is greater than the preset threshold, the airflow sensor module 32 provides a trigger signal to the microprocessor module 33, the microprocessor module 33 provides an output voltage greater than the voltage of the battery module 31 to the atomizer module 34, and further, the microprocessor module 33 provides an output signal to the display module 35, where the output signal is configured to drive the display module 35 to display an interactive indication state of the current electronic atomization device. In some embodiments, the display module 35 includes an indicator light or a display screen.
Specifically, the microprocessor module 33 further includes a boost circuit 331, the battery module 31 is coupled to an input terminal of the boost circuit 331, for providing an input voltage of the boost circuit 331, and the atomizer module 34 is coupled to an output terminal of the boost circuit 331. When the microprocessor module 33 receives the trigger signal from the airflow sensor module 32, the power Mos tube of the boost circuit 331 is closed, and at this time, a current flows through the inductance element in the boost circuit 331, and the inductance element stores electric energy as magnetic field energy. When the power Mos tube of the boost circuit 331 is turned off, the magnetic field energy stored in the inductance element is converted into electric field energy and forms an inductance voltage, and the inductance voltage is superimposed with the input voltage provided by the battery module 31 to the boost circuit 331, so as to obtain a boosted output voltage. Further, the power Mos tube in the boost circuit 331 is turned on and off by the PWM command sent by the microprocessor module 33, and the atomizer module 34 obtains an output voltage that is stable and greater than the input voltage.
According to the scheme, the voltage provided by the power supply at the input end is boosted in a high-voltage low-current mode and then is provided for the atomization assembly, so that on one hand, the heat loss in the atomization process is reduced, and on the other hand, the atomization power of the electronic atomization device is improved. Further, the boost circuit topology adopted by the airflow sensing circuit provided by the application, the electronic atomization device can adopt a power supply with lower platform voltage, and the selection range of materials is widened.
The foregoing is merely an embodiment of the present application, and the patent scope of the present application is not limited thereto, but the equivalent structures or equivalent flow changes made in the present application and the contents of the drawings are utilized, or directly or indirectly applied to other related technical fields, which are all included in the patent protection scope of the present application.
Claims (10)
1. An air flow sensing circuit for use in an electronic atomizing device, the air flow sensing circuit comprising:
the air flow sensor is coupled with the first control circuit of the electronic atomization device and is used for sending a corresponding trigger signal to the first control circuit when the ambient negative pressure is detected to be larger than a threshold value;
the input end of the boosting circuit is coupled with the power supply of the electronic atomization device and the first control circuit, and the output end of the boosting circuit is coupled with the atomization component of the electronic atomization device; the boost circuit is used for receiving the control signal sent by the first control circuit and responding to the control signal to provide boosted voltage for the atomization component.
2. The airflow sensing circuit of claim 1, wherein the boost circuit comprises:
an inductor, a first end of the inductor being coupled to a first end of the power supply;
the first end of the switch unit is coupled with the second end of the inductor, the second end of the switch unit is coupled with the second end of the power supply, and the control end of the switch unit is coupled with the first control circuit;
a diode, wherein the anode of the diode is coupled with the second end of the inductor;
the first end of the capacitor is coupled with the cathode of the diode, the second end of the capacitor is coupled with the second end of the power supply, and the capacitor is connected with the atomizing assembly in parallel.
3. The airflow sensing circuit of claim 2 wherein the switching unit comprises a Mos tube, a first end of the Mos tube coupled to the second end of the inductor, a second end of the Mos tube coupled to the second end of the power supply, and a control end of the Mos tube coupled to the first control circuit.
4. A gas flow sensing circuit according to claim 3, wherein the diode is a freewheeling diode.
5. The airflow sensing circuit of claim 1 wherein the Boost circuit is any one of a Boost circuit and a charge pump Boost circuit.
6. The airflow sensing circuit of claim 1 wherein the control signal is a PWM signal.
7. An electronic atomizing device, characterized in that it comprises an air flow sensing circuit according to any one of claims 1-6.
8. The electronic atomizing device of claim 7, wherein,
the electronic atomization device comprises an interaction component, and the interaction component is connected with the first control circuit and used for displaying the state of the electronic atomization device.
9. The electronic atomizing device of claim 8, wherein,
the interactive component includes an indicator light and/or a display screen.
10. The electronic atomizing device of claim 7, wherein,
the electronic atomization device comprises a second control circuit, the second control circuit is a main control circuit, and the first control circuit is a power supply control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321601089.8U CN220423133U (en) | 2023-06-21 | 2023-06-21 | Airflow sensing circuit and electronic atomization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321601089.8U CN220423133U (en) | 2023-06-21 | 2023-06-21 | Airflow sensing circuit and electronic atomization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220423133U true CN220423133U (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321601089.8U Active CN220423133U (en) | 2023-06-21 | 2023-06-21 | Airflow sensing circuit and electronic atomization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220423133U (en) |
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2023
- 2023-06-21 CN CN202321601089.8U patent/CN220423133U/en active Active
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