Electronic atomization device

Abstract

This application discloses an electronic atomizing device, comprising a housing cavity, an atomizing element, a battery cell, a first switching circuit, and a second switching circuit. The housing cavity contains at least a portion of an aerosol-generating matrix. The atomizing element atomizes the aerosol-generating matrix to produce an aerosol. The first switching circuit is electrically connected between the battery cell and the atomizing element. The second switching circuit is electrically connected between an external power source and the atomizing element, and is also electrically connected to the first switching circuit. The first and second switching circuits are configured such that: in response to power being supplied by the external power source, the second switching circuit is turned on, and the first switching circuit is turned off, so that the external power source supplies power to the atomizing element; in response to power loss from the external power source, the second switching circuit is turned off, and the first switching circuit is turned on, so that the battery cell supplies power to the atomizing element. Through this method, the power supply from the battery cell and the external power source can be automatically switched, thus solving the current technical problem that electronic atomizing devices cannot continue to be used after the battery cell reaches its cycle life.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, and in particular to an electronic atomization device. Background Technology

[0002] Electronic atomizing devices are used to heat an aerosol-forming matrix to generate an inhalable aerosol. The aerosol-forming matrix can be a liquid matrix, such as e-liquid, or a solid matrix, such as an aerosol-generating product, i.e., a cigarette.

[0003] Currently, common e-cigarette devices are powered by batteries. Once the batteries reach the end of their cycle life, the e-cigarette device can no longer be used, and users have no choice but to discard the entire device. Utility Model Content

[0004] This application provides an electronic atomizing device that can automatically switch between battery cell and external power supply to solve the current technical problem that electronic atomizing devices cannot continue to be used after the battery cell reaches its cycle life.

[0005] In a first aspect, embodiments of this application provide an electronic atomizing device, comprising: a receiving cavity for receiving at least a portion of an aerosol generating matrix; an atomizing element for atomizing the aerosol generating matrix to generate an aerosol; a battery cell; a first switching circuit electrically connected between the battery cell and the atomizing element; and a second switching circuit electrically connected between an external power source and the atomizing element, and electrically connected to the first switching circuit; the first and second switching circuits are configured such that: in response to the external power source being energized, the second switching circuit is turned on and the first switching circuit is turned off, so that the external power source supplies power to the atomizing element; and in response to the external power source being de-energized, the second switching circuit is turned off and the first switching circuit is turned on, so that the battery cell supplies power to the atomizing element.

[0006] In one or more embodiments, the electronic atomizing device further includes: a unidirectional conductive circuit electrically connected between the battery cell and the atomizing element, configured to: be turned on before the first switching circuit is turned on when the external power supply is lost, and be turned off after the first switching circuit is turned on.

[0007] In one or more embodiments, the first switching circuit includes a first switching transistor, the control terminal of the first switching transistor is electrically connected to an external power supply and a second switching circuit, the first end of the first switching transistor is electrically connected to a battery cell, and the second end of the first switching transistor is electrically connected to an atomizing element; and / or, the second switching circuit includes a second switching transistor, the control terminal of the second switching transistor is grounded, the first end of the second switching transistor is electrically connected to an external power supply and the first switching circuit, and the second end of the second switching transistor is electrically connected to an atomizing element.

[0008] In one or more embodiments, both the first switch and the second switch are PMOS transistors; the control terminals of both the first switch and the second switch are the gates of the PMOS transistors, the first terminals of both the first switch and the second switch are the sources of the PMOS transistors, and the second terminals of both the first switch and the second switch are the drains of the PMOS transistors.

[0009] In one or more embodiments, the first switching circuit further includes a first resistor; a first end of the first resistor is electrically connected to the control terminal of the first switching transistor, and a second end of the first resistor is grounded.

[0010] In one or more embodiments, the second switching circuit further includes a second resistor; a first end of the second resistor is electrically connected to the control terminal of the second switching transistor, and a second end of the second resistor is grounded.

[0011] In one or more embodiments, the first switching circuit further includes a first resistor, a first end of which is electrically connected to the control terminal of the first switching transistor, and a second end of which is grounded; the second switching circuit further includes a second resistor, a first end of which is electrically connected to the control terminal of the second switching transistor, and a second end of which is grounded, and the resistance values ​​of the first resistor and the second resistor are equal.

[0012] In one or more embodiments, the unidirectional conductive circuit includes a diode; the anode of the diode is electrically connected to a battery cell, and the cathode of the diode is electrically connected to an atomizing element.

[0013] In one or more embodiments, the diode includes a Schottky diode.

[0014] In one or more embodiments, the voltage of the external power supply is greater than the voltage of the battery cell, and the difference between the voltage of the external power supply and the voltage of the battery cell is greater than a difference threshold.

[0015] The beneficial effects of this application are as follows: The electronic atomizing device of this application includes a receiving cavity, an atomizing element, a battery cell, a first switching circuit, and a second switching circuit. When an external power source is activated, the second switching circuit is turned on, the first switching circuit is turned off, and the external power source supplies power to the atomizing element. When the external power source is deactivated, the second switching circuit is turned off, the first switching circuit is turned on, and the battery cell supplies power to the atomizing element. Through the above process, the automatic switching between the battery cell and the external power source for powering the atomizing element is achieved. Therefore, if the battery cell is removed due to reaching its cycle life, the atomizing element can be powered by the external power source to maintain the normal operation of the electronic atomizing device. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are not intended to limit the embodiments, and elements having the same reference numerals in the drawings are designated as similar elements.

[0017] Figure 1 This is a schematic diagram of the electronic atomizing device provided in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the electronic atomizing device provided in the embodiments of this application. Figure 2 ; Figure 3 This is a schematic diagram of the electronic atomizing device provided in the embodiments of this application. Figure 3 . Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and thoroughly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0019] It should be noted that when an element is described as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements between them.

[0020] Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0021] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the composition of an electronic atomizing device provided in an embodiment of this application. The electronic atomizing device refers to any device that generates an aerosol from an aerosol-forming matrix during use. In particular, a device is known that heats the aerosol-forming matrix to form an inhalable aerosol without burning or igniting the aerosol-generating article. Such devices are sometimes described as “heat-not-burn” devices, “tobacco heated products,” “tobacco heated devices,” or the like.

[0022] Similarly, there are so-called electronic cigarette devices that typically vaporize an aerosol-forming matrix in liquid form, which may or may not contain nicotine. In other embodiments, electronic atomizing devices provide aerosols or vapors by heating an aerosol-forming matrix in solid form. In a particular embodiment, the electronic atomizing device is a tobacco heating product.

[0023] like Figure 1 As shown, the electronic atomizing device 100 includes a receiving cavity 10, an atomizing element 20, a battery cell 30, a first switching circuit 40, and a second switching circuit 50.

[0024] The containment cavity 10 is used to contain at least a portion of the aerosol generation matrix. The containment cavity 10 is a physical space or structure inside the electronic atomizing device 100, which can be closed or semi-closed, and has a certain shape and capacity.

[0025] The atomizing element 20 is used to atomize the aerosol generating matrix to produce an aerosol. The aerosol generating matrix is ​​a matrix capable of releasing volatile compounds that can form aerosols. These volatile compounds can be released by heating the aerosol generating matrix.

[0026] In some embodiments, the aerosol-forming matrix may comprise a tobacco component, wherein the tobacco component is any material comprising tobacco or a derivative thereof. The tobacco component may comprise one or more of shredded tobacco, tobacco fiber, shredded tobacco, compressed tobacco, tobacco stems, tobacco sheets, and / or tobacco extracts. In some embodiments, the aerosol-forming matrix may comprise a tobacco substitute. In some embodiments, the aerosol-forming matrix may comprise a liquid e-liquid, the main components of which are propylene glycol (PG), vegetable glycerin (VG), nicotine, and flavoring.

[0027] The battery cell 30 can be used to power the atomizing element 20. In one embodiment, the battery cell 30 is a battery. The battery can be a lithium-ion battery, lithium metal battery, lead-acid battery, nickel-cadmium battery, nickel-metal hydride battery, lithium-sulfur battery, lithium-air battery, or sodium-ion battery, etc., and is not limited thereto. In terms of scale, the battery in this embodiment can be a single battery cell, or a battery module composed of multiple battery cells connected in series and / or in parallel, etc., and is not limited thereto. Of course, in other embodiments, the battery may include more or fewer components, or have different component configurations, and this embodiment does not limit this.

[0028] The first switching circuit 40 is electrically connected between the battery cell 30 and the atomizing element 20. The second switching circuit 50 is electrically connected between the external power supply 200 and the atomizing element 20, and is also electrically connected to the first switching circuit 40. The first switching circuit 40 and the second switching circuit 50 are configured such that: in response to the external power supply 200 being energized, the second switching circuit 50 is turned on and the first switching circuit 40 is turned off, so that the external power supply 200 supplies power to the atomizing element 20; in response to the external power supply 200 being de-energized, the second switching circuit 50 is turned off and the first switching circuit 40 is turned on, so that the battery cell 30 supplies power to the atomizing element 20. Through the above process, the automatic switching between the battery cell 30 and the external power supply 200 for powering the atomizing element 20 is realized. Therefore, if the battery cell 30 is removed due to reaching its cycle life, the atomizing element 200 can be powered by the external power supply 200 to maintain the normal operation of the electronic atomizing device 100.

[0029] In some embodiments, such as Figure 2As shown, the electronic atomizing device 100 also includes a unidirectional conductive circuit 60.

[0030] A unidirectional conductive circuit 60 is electrically connected between the battery cell 30 and the atomizing element 20. The unidirectional conductive circuit 60 is configured to be turned on before the first switching circuit 40 is turned on when the external power supply 200 is de-energized, and to be turned off after the first switching circuit 40 is turned on.

[0031] Specifically, it can be understood that when the external power supply 200 fails, the second switching circuit 50 is turned off. The first switching circuit 40 requires a certain amount of time to go from being initially driven to full conduction. During this time, if the one-way conductive circuit 60 is not provided, the atomizing element 20 will not receive power, potentially causing the electronic atomizing device 100 to restart. Therefore, by providing the one-way conductive circuit 60, it can be turned on before the first switching circuit 40 is turned on, that is, during the time between the initial drive and full conduction of the first switching circuit 40. This allows the battery cell 30 to supply power to the atomizing element 20 through the one-way conductive circuit 60, thus preventing the electronic atomizing device 100 from restarting abnormally. Afterwards, once the first switching circuit 40 is fully turned on, the one-way conductive circuit 60 is turned off, and the battery cell 30 normally supplies power to the atomizing element 20 through the first switching circuit 40.

[0032] Please refer to Figure 3 , Figure 3 This application provides a circuit structure for a first switching circuit 40, a second switching circuit 50, and a unidirectional conductive circuit 60, as illustrated in an embodiment. Figure 3 As shown, the first switching circuit 40 includes a first switching transistor Q1. The control terminal of the first switching transistor Q1 is electrically connected to an external power supply 200 and a second switching circuit 50, respectively. The first terminal of the first switching transistor Q1 is electrically connected to the battery cell 30, and the second terminal of the first switching transistor Q1 is electrically connected to the atomizing element 20.

[0033] In this embodiment, the first switch Q1 is a PMOS transistor. The gate of the PMOS transistor is the first terminal of the first switch Q1, the source of the PMOS transistor is the second terminal of the first switch Q1, and the drain of the PMOS transistor is the third terminal of the first switch Q1.

[0034] In addition, the first switch Q1 can be any controllable switch, such as an insulated gate bipolar transistor (IGBT) device, an integrated gate commutated thyristor (IGCT) device, a gate turn-off thyristor (GTO) device, a silicon controlled rectifier (SCR) device, a junction gate field-effect transistor (JFET) device, a MOS controlled thyristor (MCT) device, etc.

[0035] In some embodiments, the voltage value of the external power supply 200 is greater than the voltage value of the battery cell 30, and the difference between the voltage value of the external power supply 200 and the voltage value of the battery cell 30 is greater than a difference threshold.

[0036] The difference threshold can be set according to the actual application scenario. For example, in a specific embodiment, the difference threshold is set according to the turn-off characteristics of the first switch Q1. In this embodiment, the difference threshold can be set to the threshold voltage Vth of the first switch Q1. Then, when the external power supply 200 is powered on, since the voltage value of the external power supply 200 is greater than the voltage value of the battery cell 30, and the difference between the voltage value of the external power supply 200 and the voltage value of the battery cell 30 is greater than the difference threshold, it can be ensured that the first switch Q1 is reliably turned off.

[0037] In some embodiments, the first switching circuit 40 further includes a first resistor R1.

[0038] The first end of the first resistor R1 is electrically connected to the control terminal of the first switching transistor Q1, and the second end of the first resistor R1 is grounded to GND.

[0039] The first resistor R1 is used to form an RC circuit with the parasitic capacitance between the gate and source of the first switching transistor Q1, so as to slowly turn on the first switching transistor Q1 and avoid the first switching transistor Q1 from having a large current at the moment of conduction, which would damage the first switching transistor Q1.

[0040] In some embodiments, the second switching circuit 50 includes a second switching transistor Q2, the control terminal of the second switching transistor Q2 is grounded to GND, the first terminal of the second switching transistor Q2 is electrically connected to an external power supply 200 and a first switching circuit 40, and the second terminal of the second switching transistor Q2 is electrically connected to an atomizing element 20.

[0041] In this embodiment, the second switch Q2 is a PMOS transistor. The gate of the PMOS transistor is the first terminal of the second switch Q2, the source of the PMOS transistor is the second terminal of the second switch Q2, and the drain of the PMOS transistor is the third terminal of the second switch Q2.

[0042] In addition, the second switch Q2 can be any controllable switch, such as an insulated gate bipolar transistor (IGBT) device, an integrated gate commutated thyristor (IGCT) device, a gate turn-off thyristor (GTO) device, a silicon controlled rectifier (SCR) device, a junction gate field-effect transistor (JFET) device, a MOS controlled thyristor (MCT) device, etc.

[0043] In some embodiments, the second switching circuit 50 further includes a second resistor R2.

[0044] The first end of the second resistor R2 is electrically connected to the control terminal of the second switch Q2, and the second end of the second resistor R2 is grounded to GND.

[0045] The second resistor R2 is used to form an RC circuit with the parasitic capacitance between the gate and source of the second switch Q2, so as to slowly turn on the second switch Q2 and avoid the second switch Q2 from having a large current at the moment of turn-on, which would damage the second switch Q2.

[0046] In some embodiments, the unidirectional conductive circuit 60 includes a diode D1.

[0047] The anode of diode D1 is electrically connected to the battery cell 30, and the cathode of diode D1 is electrically connected to the atomizing element 20.

[0048] By configuring diode D1, it can conduct normally before the first switching circuit 40 is turned on (i.e., diode D1 is connected from anode to cathode). This means that diode D1 conducts during the time between the initial activation and full activation of the first switching circuit 40, allowing the battery cell 30 to supply power to the atomizing element 20 through diode D1, thus preventing the electronic atomizing device 100 from restarting abnormally. Afterwards, once the first switching circuit 40 is fully activated, diode D1 is short-circuited and cut off, allowing the battery cell 30 to normally supply power to the atomizing element 20 through the first switching circuit 40.

[0049] In some embodiments, diode D1 includes a Schottky diode. The forward voltage of a Schottky diode is much lower than that of a conventional PN junction diode, resulting in faster switching speeds and helping to more effectively prevent abnormal restarts of the electronic atomizing device 100.

[0050] The following are Figure 3 The principle of the circuit structure shown will be explained.

[0051] When the external power supply 200 is powered on, the source voltage of the second switch Q2 is the voltage of the external power supply 200, and the gate of the second switch Q2 is grounded (GND). Therefore, the gate voltage of the second switch Q2 is zero, and the gate-source voltage (i.e., the voltage difference between the gate and source) of the second switch Q2 is less than zero and less than the conduction threshold of the second switch Q2, so the second switch Q2 is turned on. Simultaneously, the gate voltage of the first switch Q1 is the voltage of the external power supply 200, and the source voltage of the first switch Q1 is the voltage of the battery cell 30. The difference between the voltage value of the external power supply 200 and the voltage value of the battery cell 30 is the gate-source voltage of the first switch Q1. This gate-source voltage is greater than the difference threshold, i.e., greater than the conduction threshold of the first switch Q1, so the first switch Q1 is turned off. The external power supply 200 supplies power to the atomizing element 20 through the second switch Q2.

[0052] When the external power supply 200 fails, the source voltage of the second switch Q2 is zero, and since the gate of the second switch Q2 is grounded (GND), the gate voltage of the second switch Q2 is zero. Therefore, the gate-source voltage (i.e., the voltage difference between the gate and source) of the second switch Q2 is zero and greater than the conduction threshold of the second switch Q2 (which is typically negative), causing the second switch Q2 to turn off. Simultaneously, the gate voltage of the first switch Q1 is zero, and the source voltage of the first switch Q1 is the voltage of the battery cell 30. Since the gate-source voltage of the first switch Q1 is less than zero and less than the conduction threshold of the first switch Q1, the first switch Q1 turns on, and the battery cell 30 supplies power to the atomizing element 20 through the first switch Q1.

[0053] Through the above process, the automatic switching between the battery cell 30 and the external power supply 200 to power the atomizing element 20 is achieved. Therefore, if the battery cell 30 is removed due to reaching its cycle life, the atomizing element 200 can be powered by the external power supply 200 to maintain the normal operation of the electronic atomizing device 100. Furthermore, the switching process between the battery cell 30 and the external power supply 200 is based on the voltage values ​​of the battery cell 30 and the external power supply 200, without occupying the I / O ports of the controller in the electronic atomizing device 100.

[0054] Furthermore, when the external power supply 200 fails, during the period from the initial activation of the first switching transistor Q1 to its full activation, the diode D1 is forward-biased, and the battery cell 30 supplies power to the atomizing element 20 through the diode D1, ensuring that the atomizing element 20 remains energized and thus preventing the electronic atomizing device 100 from restarting abnormally. Afterwards, once the first switching transistor Q1 is fully activated, the diode D1 is short-circuited and cut off, and the battery cell 30 normally supplies power to the atomizing element 20 through the first switching transistor Q1.

[0055] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

[0056] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electronic atomizing device, characterized by, include: A containment cavity for containing at least a portion of the aerosol generation matrix; Atomizing element for atomizing the aerosol generating matrix to produce an aerosol; Battery cell; The first switching circuit is electrically connected between the battery cell and the atomizing element; The second switching circuit is electrically connected between the external power supply and the atomizing element, and is also electrically connected to the first switching circuit. The first switching circuit and the second switching circuit are configured as follows: In response to the external power supply being energized, the second switching circuit is turned on and the first switching circuit is turned off, so that the external power supply supplies power to the atomizing element; In response to the loss of power from the external power source, the second switching circuit is turned off and the first switching circuit is turned on, so that the battery cell supplies power to the atomizing element.

2. The electronic atomizing device of claim 1, wherein, Also includes: A unidirectional conductive circuit, electrically connected between the battery cell and the atomizing element, is configured to: conduct before the first switching circuit is turned on when the external power supply is lost, and turn off after the first switching circuit is turned on.

3. The electronic atomizing device of claim 1, wherein, The first switching circuit includes a first switching transistor. The control terminal of the first switching transistor is electrically connected to the external power supply and the second switching circuit, respectively. The first terminal of the first switching transistor is electrically connected to the battery cell, and the second terminal of the first switching transistor is electrically connected to the atomizing element. And / or, the second switching circuit includes a second switching transistor, the control terminal of the second switching transistor is grounded, the first terminal of the second switching transistor is electrically connected to the external power supply and the first switching circuit respectively, and the second terminal of the second switching transistor is electrically connected to the atomizing element.

4. The electronic atomizing device of claim 3, wherein, Both the first and second switching transistors are PMOS transistors; The control terminals of the first switch and the second switch are both gates of PMOS transistors, the first terminals of the first switch and the second switch are both sources of PMOS transistors, and the second terminals of the first switch and the second switch are both drains of PMOS transistors.

5. The electronic atomizing device of claim 4, wherein, The first switching circuit also includes a first resistor; The first end of the first resistor is electrically connected to the control terminal of the first switching transistor, and the second end of the first resistor is grounded.

6. The electronic atomizing device of claim 4, wherein, The second switching circuit also includes a second resistor; The first end of the second resistor is electrically connected to the control terminal of the second switch, and the second end of the second resistor is grounded.

7. The electronic atomizing device of claim 4, wherein, The first switching circuit further includes a first resistor, the first end of which is electrically connected to the control terminal of the first switching transistor, and the second end of which is grounded; the second switching circuit further includes a second resistor, the first end of which is electrically connected to the control terminal of the second switching transistor, and the second end of which is grounded, and the resistance value of the first resistor is equal to the resistance value of the second resistor.

8. The electronic atomizing device of claim 2, wherein, The unidirectional conductive circuit includes a diode; The anode of the diode is electrically connected to the battery cell, and the cathode of the diode is electrically connected to the atomizing element.

9. The electronic atomizing device of claim 8, wherein, The diode includes a Schottky diode.

10. The electronic atomizing device of claim 4, wherein, The voltage of the external power source is greater than the voltage of the battery cell, and the difference between the voltage of the external power source and the voltage of the battery cell is greater than a difference threshold.

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