Thermodynamic control circuit and non-nicotine electronic cigarette device including the circuit

Abstract

The heat engine control circuit includes a rail converter circuit and a gate driver circuit. The rail converter circuit is configured to convert the power supply voltage into a power signal based on a smoke enable signal, which is a pulse-width modulated signal. The gate driver circuit includes an integrated gate driver. The integrated gate driver is configured to control the power applied to the heater of the non-nicotine electronic cigarette device based on the power signal, a first enable signal, and a second enable signal.

Description

Technical Field

[0001] One or more exemplary embodiments relate to non-nicotine e-vaping devices. Background Technology

[0002] A non-nicotine electronic cigarette device (or non-nicotine e-cigarette device) includes a heater that vaporizes a non-nicotine vapor precursor formulation material to produce non-nicotine vapor. A non-nicotine e-cigarette device may include several e-cigarette components, including a power source, a cartridge or e-cigarette canister containing the heater, and a non-nicotine reservoir capable of holding the non-nicotine vapor precursor formulation material. Summary of the Invention

[0003] At least one exemplary embodiment provides a thermodynamic control circuit for controlling the operation of a heater in a non-nicotine electronic cigarette device, the thermodynamic control circuit comprising: a rail converter circuit configured to convert a power supply voltage into a power signal based on a smoke enable signal, the smoke enable signal being a pulse width modulated signal; and a gate driver circuit including an integrated gate driver configured to control the application of power to the heater of the non-nicotine electronic cigarette device based on a power signal, a first enable signal, and a second enable signal.

[0004] At least one other exemplary embodiment provides a non-nicotine electronic cigarette device, comprising: a heater configured to heat a non-nicotine vapor precursor preparation drawn from a non-nicotine reservoir; a rail converter circuit configured to convert a power supply voltage into a power signal based on a smoke-enabled signal, the smoke-enabled signal being a pulse-width modulated signal; and a gate driver circuit including an integrated gate driver configured to control the application of power to the heater of the non-nicotine electronic cigarette device based on a power signal, a first enable signal, and a second enable signal.

[0005] According to one or more exemplary embodiments, the rail converter circuit may be configured to disable the power signal in response to the termination of the smoke enable signal.

[0006] The rail converter circuit can be configured to output a feedback signal, where the feedback signal is a scaled version of the power signal, indicating the current voltage level of the power signal. Non-nicotine electronic vaping devices may include a controller configured to generate a smoke-enabling signal based on the feedback signal. The controller may be configured to control the duty cycle of the smoke-enabling signal based on the feedback signal.

[0007] The second enable signal may be a pulse width modulation signal. The integrated gate driver may be configured to receive the second enable signal at an input pin, and the gate driver circuit may include a filter circuit connected to the input pin, the filter circuit being configured to filter the second enable signal before it is input to the integrated gate driver.

[0008] The gate driver circuit may include a pull-down resistor connected to an input pin of the integrated gate driver, wherein the pull-down resistor is configured to hold the input pin at a logic low level when a second enable signal is in a floating state.

[0009] The gate driver circuitry may include a bootstrap charge pump circuitry connected between the input voltage pin and the boost pin of the integrated gate driver. The bootstrap charge pump circuitry may be connected to the switching node pin of the integrated gate driver.

[0010] The gate driver circuit may include a filter circuit connected between the power supply signal input terminal and the bootstrap charge pump circuit.

[0011] The rail converter circuit may include: a first capacitor connected between a power source and a ground terminal; an inductor having a first terminal connected to a first node between the power source and the first capacitor and a second terminal connected to a second node; a switching transistor connected between the second node and the ground terminal, the switching transistor being configured to receive a smoke enable signal; a second capacitor having a first terminal connected to the second node and a second terminal connected to a third node; a first diode having an anode connected to ground and a cathode connected to the third node; a second diode having an anode connected to the third node and a cathode connected to a fourth node; a third capacitor connected between the fourth node and the ground terminal; and a voltage divider circuit connected to the fourth node, the voltage divider circuit being configured to output a feedback signal based on a power signal.

[0012] The rail converter circuit may also include a pull-down resistor connected between the gate of the switching transistor and ground, wherein the pull-down resistor is configured to block the output of the power supply signal when the smoke enable signal has an indeterminate state.

[0013] The gate driver circuit may further include: a first filter circuit configured to filter a power signal for input to the integrated gate driver; and a second filter circuit configured to filter a second enable signal for input to the integrated gate driver.

[0014] The thermodynamic control circuit and / or non-nicotine electronic cigarette device may include a thermodynamic drive circuit configured to control the power of the heater, wherein the thermodynamic drive circuit includes a first transistor and a second transistor connected in series between a power supply and ground. A gate driver circuit may be configured to output a drive voltage to the gate of the first transistor to maintain the gate-source voltage of the first transistor at the voltage level of the power supply signal, independent of the voltage level of the power supply.

[0015] The thermodynamic control circuit and / or non-nicotine electronic cigarette device may include a thermodynamic drive circuit configured to control the power of the heater, wherein the thermodynamic drive circuit includes a first transistor and a second transistor connected in series between a power source and ground. The gate driver circuit may be configured to output a current switching signal to generate a voltage output to the heater, the level of which is independent of the voltage level of the power source. Attached Figure Description

[0016] The various features and advantages of the non-limiting embodiments herein will become more apparent when read in conjunction with the accompanying drawings. The drawings are provided for illustrative purposes only and should not be construed as limiting the scope of the claims. Unless explicitly stated otherwise, the drawings are not to be considered as drawn to scale. For clarity, the various dimensions of the drawings may have been enlarged.

[0017] Figure 1 This is a front view of a non-nicotine electronic cigarette device according to an exemplary embodiment.

[0018] Figure 2 yes Figure 1 Side view of a non-nicotine electronic cigarette device.

[0019] Figure 3 yes Figure 1 Rear view of a non-nicotine electronic cigarette device.

[0020] Figure 4 yes Figure 1 A close-up view of a non-nicotine electronic cigarette device.

[0021] Figure 5 yes Figure 1 A remote view of a non-nicotine electronic cigarette device.

[0022] Figure 6 yes Figure 1 A perspective view of a non-nicotine electronic cigarette device.

[0023] Figure 7 yes Figure 6 A magnified view of the pod entrance.

[0024] Figure 8 yes Figure 7 A cross-sectional view of a non-nicotine electronic cigarette device.

[0025] Figure 9 yes Figure 6 A perspective view of the main body of a non-nicotine electronic cigarette device.

[0026] Figure 10 yes Figure 9 The front view of the main body of the device.

[0027] Figure 11 yes Figure 10 Enlarged perspective view of the through hole in the image.

[0028] Figure 12 yes Figure 10 An enlarged perspective view of the electrical connectors of the equipment.

[0029] Figure 13 It involves Figure 12 A partial exploded view of the cigarette holder.

[0030] Figure 14 It involves Figure 9 A partial exploded view of the border structure.

[0031] Figure 15 yes Figure 14 Enlarged perspective view of the mouthpiece, spring, retaining structure, and frame structure.

[0032] Figure 16 yes Figure 14 Partial exploded view of the front cover, frame, and rear cover.

[0033] Figure 17 yes Figure 6 A perspective view of the non-nicotine pod component of a non-nicotine electronic cigarette device.

[0034] Figure 18 yes Figure 17 Another perspective view of the non-nicotine pod components.

[0035] Figure 19 yes Figure 18 Another perspective view of the non-nicotine pod components.

[0036] Figure 20 It does not include a connector module. Figure 19 A perspective view of the non-nicotine pod components.

[0037] Figure 21 yes Figure 19 A perspective view of the connector module in the image.

[0038] Figure 22 yes Figure 21 Another perspective view of the connector module.

[0039] Figure 23 It involves Figure 22 An exploded view of the liquid suction core, heater, electrical leads, and contact core.

[0040] Figure 24 It involves Figure 17 An exploded view of the first shell section of the non-nicotine pod assembly.

[0041] Figure 25 It involves Figure 17 A partial exploded view of the second shell section of the non-nicotine pod assembly.

[0042] Figure 26 yes Figure 25 An exploded view of the activation pin in the diagram.

[0043] Figure 27 It does not include the liquid suction core, heater, electrical leads, and contact core. Figure 22 A perspective view of the connector module.

[0044] Figure 28 yes Figure 27 An exploded view of the connector module.

[0045] Figure 29 The electrical system of the device body and non-nicotine pod components of a non-nicotine electronic cigarette device according to one or more exemplary embodiments is shown.

[0046] Figure 30 This is a simplified block diagram illustrating a dry-out smoking and automatic shutdown control system according to an exemplary embodiment.

[0047] Figure 31 This is a flowchart illustrating a depletion detection method according to an exemplary embodiment.

[0048] Figure 32 The graphs show the relationship between resistance and time when there is a depleted smoking state at the start of smoking ("depleted smoking"), when there is a depleted smoking state during smoking ("depleted smoking"), and when there is no depleted smoking state ("normal smoking").

[0049] Figure 33 This is a flowchart illustrating an exemplary method of operation of a non-nicotine electronic cigarette device after shutting down the smoking function in response to detecting a hard fault pod event such as a depleted smoking state, according to an exemplary embodiment.

[0050] Figure 34 A heater voltage measurement circuit according to an exemplary embodiment is shown.

[0051] Figure 35 A heater current measurement circuit according to an exemplary embodiment is shown.

[0052] Figure 36 A pod temperature measurement circuit according to some exemplary embodiments is shown.

[0053] Figure 37 A pod temperature measurement circuit according to some other exemplary embodiments is shown.

[0054] Figure 38 This is a circuit diagram showing a heat engine control circuit according to some exemplary embodiments.

[0055] Figure 39 This is a circuit diagram illustrating a heat engine control circuit according to some other exemplary embodiments.

[0056] Figure 40 A temperature sensing transducer is shown according to some exemplary embodiments.

[0057] Figure 41 A temperature sensing transducer according to some other exemplary embodiments is shown. Detailed Implementation

[0058] This document discloses some detailed exemplary embodiments. However, the specific structural and functional details disclosed herein are for the purpose of describing exemplary embodiments only. Exemplary embodiments may be implemented in many alternative forms and should not be considered limited to the exemplary embodiments listed herein.

[0059] Therefore, while exemplary embodiments can have various modifications and alternative forms, their exemplary embodiments are shown by way of example in the accompanying drawings and will be described in detail herein. However, it should be understood that there is no intention to limit the exemplary embodiments to the specific forms disclosed; rather, the exemplary embodiments cover all modifications, equivalents, and alternative forms thereto. Throughout the description of the drawings, the same reference numerals denote the same elements.

[0060] It should be understood that when an element or layer is referred to as "on another element or layer," "connected to another element or layer," "coupled to another element or layer," "attached to another element or layer," "adjacent to another element or layer," or "covering another element or layer," the element or layer may be directly located on, directly connected to, coupled to, attached to, adjacent to, or cover the other element or layer, or there may be intermediate elements or layers. Conversely, when an element is referred to as "directly located on another element or layer," "directly connected to another element or layer," or "directly coupled to another element or layer," there are no intermediate elements or layers. Throughout this specification, the same reference numerals denote the same elements. As used herein, the term "and / or" includes one or more of the listed related items, any and all combinations or sub-combinations.

[0061] It should be understood that although the terms first, second, third, etc., used herein may describe different elements, regions, layers, and / or portions, these elements, regions, layers, and / or portions should not be limited by these terms. These terms are used only to distinguish one element, region, layer, or portion from another. Therefore, the first element, region, layer, or portion discussed below may be referred to as the second element, region, layer, or portion without departing from the teachings of the exemplary embodiments.

[0062] For ease of description, spatially related terms (e.g., "below," "below," "lower," "above," "upper," etc.) may be used to describe the relationship between one element or feature shown in the accompanying drawings and another element or feature. It should be understood that, in addition to the orientation depicted in the accompanying drawings, spatially related terms are intended to include different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as "below" or "below other elements or features" will be oriented "above other elements or features." Therefore, the term "below" can include both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein shall be interpreted accordingly.

[0063] The terminology used herein is for the purpose of describing different exemplary embodiments only and is not intended to limit the exemplary embodiments. The singular forms “a,” “an,” and “described” as used herein are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that, when used in this specification, the terms “comprising,” “including,” “containing,” and / or “comprising” indicate the presence of the stated features, integrals, steps, operations, and / or elements, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, and / or groups thereof.

[0064] When the terms “approximately” and “substantially” are used in this specification with respect to numerical values, it should be understood that the relevant numerical values ​​include a tolerance of ±10% around the stated values, unless otherwise explicitly defined.

[0065] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments pertain. It should be further understood that, unless expressly defined herein, terms (including those defined in commonly used dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant technical field and shall not be interpreted in an idealized or overly formal sense.

[0066] As used herein, “non-nicotine electronic cigarette device” or “non-nicotine electronic cigarette device” may sometimes be referred to as a non-nicotine electronic cigarette appliance and / or considered synonymous with a non-nicotine electronic cigarette appliance.

[0067] Figure 1 This is a front view of a non-nicotine electronic cigarette device according to an exemplary embodiment. Figure 2 yes Figure 1 Side view of a non-nicotine electronic cigarette device. Figure 3 yes Figure 1 Rear view of a non-nicotine electronic cigarette device. (Refer to...) Figure 1-3 The non-nicotine electronic cigarette device 500 includes a device body 100 configured to receive a non-nicotine pod assembly 300. The non-nicotine pod assembly 300 is a modular article configured to contain a non-nicotine vapor precursor formulation. A "non-nicotine vapor precursor formulation" is a material or combination of materials that can be converted into vapor. For example, a non-nicotine vapor precursor formulation can be a liquid, solid, and / or gel formulation, including but not limited to water, beads, solvents, active ingredients, ethanol, plant extracts, natural or artificial flavorings, and / or non-nicotine vapor-forming agents such as glycerin and propylene glycol.

[0068] In one exemplary embodiment, the non-nicotine vapor preformulation does not include or originate from tobacco. The non-nicotine compound in the non-nicotine vapor preformulation may be a liquid or a portion of a liquid, or included therein, including extracts, oils, alcohols, tinctures, suspensions, dispersions, colloids, generally non-neutral (weakly acidic or weakly basic) solutions, or combinations thereof. During the preparation of the non-nicotine vapor preformulation, the non-nicotine compound may be infused, mixed, or otherwise combined with other components of the non-nicotine vapor preformulation.

[0069] In one exemplary embodiment, the non-nicotine compound undergoes a slow, natural decarboxylation process over a longer period of time at relatively low temperatures (including at or below room temperature, e.g., 72°F). Furthermore, if exposed to higher temperatures (especially in the range of approximately 175°F or higher) at relatively low pressures (e.g., 1 atmosphere) for a period of time (minutes or hours), the non-nicotine compound may undergo a significantly increased decarboxylation process (e.g., 50% decarboxylation or higher). Temperatures of approximately 240°F or higher can result in rapid or transient decarboxylation occurring at relatively high decarboxylation rates, but further increases in temperature can lead to impairment of some or all of the chemical properties of the non-nicotine compound.

[0070] In one exemplary embodiment, the non-nicotine compound may be derived from medicinal plants (e.g., natural components of plants that provide medically acceptable therapeutic effects).

[0071] Non-nicotine vapor precursor formulations may contain non-nicotine compounds that provide medically acceptable therapeutic effects (e.g., treatment of pain, nausea, seizures, mental disorders). Details of the treatment methods can be found in U.S. Application No. 15 / 845,501, filed December 18, 2017, entitled “VAPORIZING DEVICES AND METHODS FOR DELIVERING ACOMPOUND USING THE SAME,” the disclosure of which is incorporated herein by reference in its entirety.

[0072] In one exemplary embodiment, at least one flavoring agent is present in an amount ranging from about 0.2% to about 15% by weight (e.g., about 1% to 12%, about 2% to 10%, or about 5% to 8%), based on the total weight of the non-nicotine vapor precursor preparation. The at least one flavoring agent may be at least one of a natural flavoring agent, an artificial flavoring agent, or a combination of natural and artificial flavoring agents. For example, the at least one flavoring agent may include menthol, wintergreen, peppermint, cinnamon, cloves, combinations thereof, and / or extracts thereof. Furthermore, flavoring agents may be included to provide other herbal spices, fruit spices, nut spices, spirits spices, roasting spices, mint spices, flavoring spices, combinations thereof, and any other desired spices.

[0073] During smoking, the non-nicotine electronic cigarette device 500 is configured to heat a non-nicotine vapor precursor preparation to produce vapor. As used herein, "non-nicotine vapor" refers to any substance produced or output from any non-nicotine electronic cigarette device according to any exemplary embodiment disclosed herein.

[0074] like Figure 1 and 3 As shown, the non-nicotine electronic cigarette device 500 extends longitudinally and has a length greater than its width. Additionally, as... Figure 2 As shown, the length of the non-nicotine electronic cigarette device 500 is also greater than its thickness. Furthermore, the width of the non-nicotine electronic cigarette device 500 may be greater than its thickness. Assuming an xyz Cartesian coordinate system, the length of the non-nicotine electronic cigarette device 500 can be measured in the y-direction, the width in the x-direction, and the thickness in the z-direction. Based on its front, side, and rear views, the non-nicotine electronic cigarette device 500 may have a basic linear form with a tapered end, but the exemplary embodiment is not limited thereto.

[0075] The device body 100 includes a front cover 104, a frame 106, and a rear cover 108. The front cover 104, frame 106, and rear cover 108 form a device housing that encloses mechanical components, electronic components, and / or circuitry associated with the operation of the non-nicotine electronic cigarette device 500. For example, the device housing of the device body 100 may enclose a power source configured to power the non-nicotine electronic cigarette device 500, which may include supplying current to the non-nicotine pod assembly 300. The device housing of the device body 100 may also include one or more electrical systems for controlling the non-nicotine electronic cigarette device 500. Electrical systems according to exemplary embodiments will be discussed in more detail later. Additionally, when assembled, the front cover 104, frame 106, and rear cover 108 may constitute most of the visible portion of the device body 100.

[0076] A front cover 104 (e.g., a first cover) defines a main opening configured to receive a frame structure 112. The main opening may have a rounded rectangular shape, but other shapes are also possible, depending on the shape of the frame structure 112. The frame structure 112 defines a through-hole 150 configured to receive a non-nicotine pod assembly 300. (The text is combined with examples...) Figure 9 Let's discuss the through-hole 150 in more detail.

[0077] The front cover 104 also defines a secondary opening configured to receive the light guide device. The secondary opening can resemble a slot (e.g., an elongated rectangle with rounded edges), but other shapes are also possible, depending on the shape of the light guide device. In one exemplary embodiment, the light guide device includes a light guide housing 114 and a button housing 122. The light guide housing 114 is configured to expose a light guide lens 116, while the button housing 122 is configured to expose a first button lens 124 and a second button lens 126 (e.g., ...). Figure 16 The upstream portion of the first button lens 124 and the button housing 122 can form the first button 118. Similarly, the downstream portion of the second button lens 126 and the button housing 122 can form the second button 120. The button housing 122 can be in the form of a single structure or two independent structures. In the latter form, the first button 118 and the second button 120 can move with more independent tactile feedback when pressed.

[0078] The operation of the non-nicotine electronic cigarette device 500 can be controlled by a first button 118 and a second button 120. For example, the first button 118 can be a power button, and the second button 120 can be an intensity button. Although two buttons are shown in conjunction with the light guide device in the accompanying drawings, it should be understood that more (or fewer) buttons can be provided depending on the available features and desired user interface.

[0079] Frame 106 (e.g., base frame) is the central support structure of device body 100 (and the non-nicotine electronic cigarette device 500 as a whole). Frame 106 may be referred to as the main body. Frame 106 includes a proximal end, a distal end, and a pair of sides located between the proximal end and the distal end. The proximal end and the distal end may also be referred to as the downstream end and the upstream end, respectively. As used herein, "proximal side" (and conversely, "distal side") relates to an adult smoker during smoking, and "downstream" (and conversely, "upstream") relates to vapor flow. Bridging portions are provided between the opposing inner surfaces of the sides (e.g., approximately along the middle of the length of frame 106) to improve strength and stability. Frame 106 may be integrally formed as a monolithic structure.

[0080] Regarding the construction material, frame 106 can be formed of alloy or plastic. The alloy (e.g., die-casting grade, machinable grade) can be an aluminum (Al) alloy or a zinc (Zn) alloy. The plastic can be polycarbonate (PC), acrylonitrile butadiene styrene (ABS), or a combination thereof (PC / ABS). For example, polycarbonate can be LUPOYSC1004A. Furthermore, for functional and / or aesthetic reasons (e.g., to provide a superior appearance), frame 106 can be provided with a polished surface. In one exemplary embodiment, frame 106 (e.g., when formed of an aluminum alloy) can be anodized. In another embodiment, frame 106 (e.g., when formed of a zinc alloy) can be coated with hard enamel or painted. In another embodiment, frame 106 (e.g., when formed of polycarbonate) can be metallized. In yet another embodiment, frame 106 (e.g., when formed of acrylonitrile butadiene styrene) can be electroplated. It should be understood that the construction materials of frame 106 can also be applied to other suitable parts of front cover 104, rear cover 108 and / or non-nicotine electronic cigarette device 500.

[0081] The rear cover 108 (e.g., a second cover) also defines an opening configured to receive the frame structure 112. This opening may have a rounded rectangular shape, although other shapes are also possible, depending on the shape of the frame structure 112. In one exemplary embodiment, the opening in the rear cover 108 is smaller than the main opening in the front cover 104. Additionally, although not shown, it should be understood that, in addition to (or instead of) the light guide device at the front of the non-nicotine electronic cigarette device 500, a light guide device (e.g., including a button) may be provided at the rear of the non-nicotine electronic cigarette device 500.

[0082] The front cover 104 and rear cover 108 can be configured to engage with the frame 106 via a snap-fit ​​arrangement. For example, the front cover 104 and / or rear cover 108 may include clips configured to interlock with corresponding mating members of the frame 106. In a non-limiting embodiment, the clip may be in the form of a tab with an opening configured to receive a corresponding mating member of the frame 106 (e.g., a protrusion with a bevel). Optionally, the front cover 104 and / or rear cover 108 can be configured to engage with the frame 106 via an interference fit (also referred to as a press fit or friction fit). However, it should be understood that the front cover 104, frame 106, and rear cover 108 can be connected by other suitable arrangements and techniques.

[0083] The main body 100 also includes a mouthpiece 102. The mouthpiece 102 can be fixed to the proximal end of the frame 106. Additionally, as... Figure 2 As shown, in an exemplary embodiment where the frame 106 is sandwiched between the front cover 104 and the rear cover 108, the mouthpiece 102 can abut against the front cover 104, the frame 106, and the rear cover 108. Furthermore, in a non-limiting embodiment, the mouthpiece 102 can be coupled to the device housing via a bayonet connection.

[0084] Figure 4 yes Figure 1 A close-up view of a non-nicotine electronic cigarette device. (Refer to...) Figure 4 The outlet surface of the mouthpiece 102 defines a plurality of steam outlets. In a non-limiting embodiment, the outlet surface of the mouthpiece 102 may be elliptical. Additionally, the outlet surface of the mouthpiece 102 may include a first crossbar corresponding to the major axis of the elliptical outlet surface and a second crossbar corresponding to the minor axis of the elliptical outlet surface. Furthermore, the first and second crossbars may intersect perpendicularly and are integrally formed part of the mouthpiece 102. Although the outlet surface is shown to define four steam outlets, it should be understood that the exemplary embodiments are not limited thereto. For example, the outlet surface may define fewer than four (e.g., one, two) steam outlets or more than four (e.g., six, eight) steam outlets.

[0085] Figure 5 yes Figure 4 A remote view of a non-nicotine electronic cigarette device. (Refer to...) Figure 5The remote end of the non-nicotine electronic cigarette device 500 includes a port 110. Port 110 is configured to receive current from an external power source (e.g., via a USB cable) to charge the internal power source within the non-nicotine electronic cigarette device 500. Additionally, port 110 can also be configured to send data to and / or receive data from another non-nicotine electronic cigarette device or other electronic device (e.g., a telephone, tablet, or computer) (e.g., via a USB cable). Furthermore, the non-nicotine electronic cigarette device 500 can be configured to wirelessly communicate with another electronic device, such as a telephone, via an application software (app) installed on the device. In this case, an adult smoker can control or otherwise interact with the non-nicotine electronic cigarette device 500 through the app (e.g., locate the device, check usage information, change operating parameters).

[0086] Figure 6 yes Figure 1 A perspective view of a non-nicotine electronic cigarette device. Figure 7 yes Figure 6 A magnified view of the pod inlet. (See reference...) Figure 6-7 As briefly described above, the non-nicotine electronic cigarette device 500 includes a non-nicotine pod assembly 300 configured to retain a non-nicotine vapor precursor formulation. The non-nicotine pod assembly 300 has an upstream end (facing the light guide device) and a downstream end (facing the mouthpiece 102). In a non-limiting embodiment, the upstream end is the surface of the non-nicotine pod assembly 300 opposite to the downstream end. The upstream end of the non-nicotine pod assembly 300 defines a pod inlet 322. The device body 100 defines a through-hole (e.g., [missing information]) configured to receive the non-nicotine pod assembly 300. Figure 9 (Through-hole 150 in the figure). In an exemplary embodiment, the frame structure 112 of the device body 100 defines the through-hole and includes an upstream edge. As particularly shown in the figures, the upstream edge of the frame structure 112 is angled (e.g., tilted inward) so that the pod inlet 322 is exposed when the non-nicotine pod assembly 300 is located within the through-hole of the device body 100.

[0087] For example, the upstream edge of the bezel structure 112 does not follow the contour of the front cover 104 (so as to be flush with the front surface of the non-nicotine pod assembly 300, thus obscuring the pod inlet 322), but is configured in the form of a spoon to guide ambient air into the pod inlet 322. This angled / spoon-shaped configuration can help reduce or prevent clogging of the air inlet (e.g., pod inlet 322) of the non-nicotine e-cigarette device 500. The depth of the spoon allows less than half (e.g., less than a quarter) of the upstream end face of the non-nicotine pod assembly 300 to be exposed. Alternatively, in a non-limiting embodiment, the pod inlet 322 is in the form of a slot. Furthermore, if the device body 100 is considered to extend along a first direction, the slot can be considered to extend along a second direction, wherein the second direction is transverse to the first direction.

[0088] Figure 8 yes Figure 7 A cross-sectional view of a non-nicotine electronic cigarette device. Figure 8 In the diagram, the cross-section is taken along the longitudinal axis of the non-nicotine electronic cigarette device 500. As shown, the device body 100 and the non-nicotine pod assembly 300 include mechanical, electronic, and / or circuitry related to the operation of the non-nicotine electronic cigarette device 500, which are discussed in more detail herein and / or incorporated herein by reference. For example, the non-nicotine pod assembly 300 may include mechanical elements configured to actuate to release a non-nicotine vapor precursor formulation from a sealed reservoir therein. The non-nicotine pod assembly 300 may also have mechanical features configured to engage with the device body 100 to facilitate insertion and positioning of the non-nicotine pod assembly 300.

[0089] Additionally, the non-nicotine pod component 300 can be a "smart pod" comprising electronic components and / or circuitry configured to store, receive, and / or transmit information to / from the device body 100. Such information can be used to verify the use of the non-nicotine pod component 300 with the device body 100 (e.g., to prevent the use of unapproved / counterfeit non-nicotine pod components). Furthermore, this information can be used to identify the type of the non-nicotine pod component 300 and then associate it with a smoking profile based on the identified type. The smoking profile can be designed to describe general parameters for heating non-nicotine vapor precursor formulations and can be adjusted, refined, or otherwise modified by the adult smoker before and / or during smoking.

[0090] The non-nicotine pod assembly 300 may also communicate with the device body 100 other information that may be relevant to the operation of the non-nicotine e-cigarette device 500. Examples of such information may include the level of the non-nicotine vapor precursor formulation within the non-nicotine pod assembly 300 and / or the elapsed time since the non-nicotine pod assembly 300 was inserted into the device body 100 and activated. For example, if the non-nicotine pod assembly 300 has been inserted into the device body 100 and activated for more than a certain period of time (e.g., more than 6 months), the non-nicotine e-cigarette device 500 may not allow smoking and may prompt an adult smoker to replace the non-nicotine pod assembly even if the non-nicotine pod assembly 300 still contains a sufficient level of non-nicotine vapor precursor formulation.

[0091] The device body 100 may include mechanical elements (e.g., complementary structures) configured to engage, retain, and / or activate the pod assembly 300. Additionally, the device body 100 may include electronic elements and / or circuitry configured to receive current to charge an internal power source (e.g., a battery), which in turn is configured to supply power to the non-nicotine pod assembly 300 during smoking. Furthermore, the device body 100 may include electronic elements and / or circuitry configured to communicate with the non-nicotine pod assembly 300, other non-nicotine e-cigarette devices, other electronic devices (e.g., telephones, tablets, computers), and / or the adult smoker. The information being communicated may include pod-specific data, current smoking details, and / or past smoking patterns / history. Such communication to the adult smoker may be provided through tactile (e.g., vibration), auditory (e.g., beeping), and / or visual (e.g., colored / flashing light) feedback. The communication of charging and / or information may be performed via port 110 (e.g., via a USB cable).

[0092] Figure 9 yes Figure 6 A perspective view of the main body of a non-nicotine electronic cigarette device. (Refer to...) Figure 9 The frame structure 112 of the device body 100 defines a through-hole 150. The through-hole 150 is configured to receive a non-nicotine pod assembly 300. To facilitate insertion and positioning of the non-nicotine pod assembly 300 within the through-hole 150, the upstream edge of the frame structure 112 includes a first upstream protrusion 128a and a second upstream protrusion 128b. The through-hole 150 may have a rectangular shape with rounded corners. In one embodiment, the first upstream protrusion 128a and the second upstream protrusion 128b are integrally formed with the frame structure 112 and located at two rounded corners of the upstream edge.

[0093] The downstream sidewall of the frame structure 112 may define a first downstream opening, a second downstream opening, and a third downstream opening. A retaining structure including a first downstream protrusion 130a and a second downstream protrusion 130b engages with the frame structure 112 such that the first downstream protrusion 130a and the second downstream protrusion 130b protrude through the first downstream opening and the second downstream opening of the frame structure 112, respectively, and enter the through hole 150. Additionally, the distal end of the mouthpiece 102 extends through the third downstream opening of the frame structure 112 and enters the through hole 150, thereby being located between the first downstream protrusion 130a and the second downstream protrusion 130b.

[0094] Figure 10 yes Figure 9 A front view of the main body of the device. (Refer to...) Figure 10 The device body 100 includes a device electrical connector 132 disposed upstream of the through-hole 150. The device electrical connector 132 of the device body 100 is configured to electrically engage with a non-nicotine pod assembly 300 located within the through-hole 150. Therefore, during smoking, power can be supplied from the device body 100 to the non-nicotine pod assembly 300 via the device electrical connector 132. Additionally, data can be sent to and / or received from the device body 100 and the non-nicotine pod assembly 300 via the device electrical connector 132.

[0095] Figure 11 yes Figure 10 Enlarged perspective view of the through-hole. (Refer to...) Figure 11 The first upstream protrusion 128a, the second upstream protrusion 128b, the first downstream protrusion 130a, the second downstream protrusion 130b, and the distal end of the mouthpiece 102 extend into the through hole 150. In an exemplary embodiment, the first upstream protrusion 128a and the second upstream protrusion 128b are fixed structures (e.g., fixed pivots), while the first downstream protrusion 130a and the second downstream protrusion 130b are easily controllable structures (e.g., retractable members). For example, the first downstream protrusion 130a and the second downstream protrusion 130b may be configured (e.g., spring-loaded) to default to an extended state, while also being configured to temporarily transition to a retracted state (and reversibly return to the extended state) to facilitate insertion of the non-nicotine pod assembly 300.

[0096] Specifically, when the non-nicotine pod assembly 300 is inserted into the through-hole 150 of the device body 100, the notch at the upstream end face of the non-nicotine pod assembly 300 can first engage with the first upstream protrusion 128a and the second upstream protrusion 128a, and then the non-nicotine pod assembly 300 pivots (around the first upstream protrusion 128a and the second upstream protrusion 128b) until the recess at the downstream end face of the non-nicotine pod assembly 300 engages with the first downstream engagement protrusion 130a and the second downstream protrusion 130b. In this case, the axis of rotation of the non-nicotine pod assembly 300 (during pivoting) can be orthogonal to the longitudinal axis of the device body 100. In addition, the first downstream protrusion 130a and the second downstream protrusion 130b, which can be biased and retractable, can retract when the non-nicotine pod assembly 300 pivots into the through-hole 150 and elastically extend to engage the recess at the downstream end face of the non-nicotine pod assembly 300. Furthermore, the engagement of the first downstream protrusion 130a and the second downstream protrusion 130b with the recess at the downstream end face of the non-nicotine pod assembly 300 can generate tactile and / or auditory feedback (e.g., an audible click) to notify an adult smoker that the non-nicotine pod assembly 300 is properly positioned in the through-hole 150 of the device body 100.

[0097] Figure 12 yes Figure 10 An enlarged perspective view of the electrical contacts of the device body 100. The electrical contacts of the device body 100 are configured to engage with the pod electrical contacts of the non-nicotine pod assembly 300 when the non-nicotine pod assembly 300 is positioned within the through-hole 150 of the device body 100. (Refer to...) Figure 12 The device body 100 includes a device electrical connector 132 as its electrical contacts. The device electrical connector 132 includes electrical contacts and data contacts. The electrical contacts of the device electrical connector 132 are configured to supply power from the device body 100 to the non-nicotine capsule assembly 300. As shown, the electrical contacts of the device electrical connector 132 include a first pair of electrical contacts and a second pair of electrical contacts (positioned closer to the front cover 104 than the rear cover 108). The first pair of electrical contacts (e.g., a pair adjacent to the first upstream protrusion 128a) may be a single integral structure, distinct from / separate from the second pair of electrical contacts, and when assembled, includes two protrusions extending into the through-hole 150. Similarly, the second pair of electrical contacts (e.g., a pair adjacent to the second upstream protrusion 128b) may be a single integral structure, distinct from / separate from the first pair of electrical contacts, and when assembled, includes two protrusions extending into the through-hole 150. The first pair of electrical contacts and the second pair of electrical contacts of the device electrical connector 132 are retractably mounted and biased so as to default into the through hole 150 and retract from the through hole 150 when subjected to a force that overcomes the bias (e.g., independently).

[0098] The data contacts of the device electrical connector 132 are configured to transmit data between the non-nicotine pod assembly 300 and the device body 100. As shown, the data contacts of the device electrical connector 132 include a row of five protrusions (positioned closer to the rear cover 108 than the front cover 104). The data contacts of the device electrical connector 132 can have different structures, which extend into the through-hole 150 when assembled. The data contacts of the device electrical connector 132 can also be retractably mounted and biased (e.g., by springs) so that they extend into the through-hole 150 by default and retract from the through-hole 150 when subjected to a force overcoming the bias (e.g., independently). For example, when the non-nicotine pod assembly 300 is inserted into the through-hole 150 of the device body 100, the pod electrical contacts of the non-nicotine pod assembly 300 will press against the corresponding device electrical contacts of the device body 100. Therefore, the electrical and data contacts of the device electrical connector 132 will retract (e.g., at least partially) into the device body 100, but their resilient arrangement will continue to press against the corresponding pod electrical contacts, thereby helping to ensure proper electrical connection between the device body 100 and the non-nicotine pod assembly 300. Furthermore, this connection can also be mechanically reliable and have minimal contact resistance to allow the transfer of power and / or signals and / or reliable and accurate communication between the device body 100 and the non-nicotine pod assembly 300. While various aspects have been discussed in conjunction with the device electrical contacts of the device body 100, it should be understood that the exemplary embodiments are not limited thereto and other configurations may be used.

[0099] Figure 13 It involves Figure 12 A partial exploded view of the cigarette holder. (Refer to...) Figure 13 The mouthpiece 102 is configured to engage with the device housing via a retaining structure 140. In one exemplary embodiment, the retaining structure 140 is primarily located between the frame 106 and the edge structure 112. As shown, the retaining structure 140 is disposed within the device housing such that the proximal end of the retaining structure 140 extends through the proximal end of the frame 106. The retaining structure 140 may extend slightly beyond or substantially flush with the proximal end of the frame 106. The proximal end of the retaining structure 140 is configured to receive the distal end of the mouthpiece 102. The proximal end of the retaining structure 140 may be a female end, while the distal end of the mouthpiece may be a male end.

[0100] For example, the mouthpiece 102 can be coupled (e.g., reversibly coupled) to the retaining structure 140 using a bayonet connection. In this case, the female end of the retaining structure 140 can define a pair of opposing L-shaped slots, while the male end of the mouthpiece 102 can have opposing radial members 134 (e.g., radial pins) configured to engage with the L-shaped slots of the retaining structure 140. Each L-shaped slot of the retaining structure 140 has a longitudinal portion and a circumferential portion. Optionally, the end of the circumferential portion can have a serif portion to help reduce or prevent the possibility of unintentional disengagement of the radial members 134 of the mouthpiece 102. In a non-limiting embodiment, the longitudinal portion of the L-shaped slot extends parallel to and along the longitudinal axis of the device body 100, while the circumferential portion of the L-shaped slot extends about the longitudinal axis (e.g., the central axis) of the device body 100. Thus, in order to couple the mouthpiece 102 to the device housing, making Figure 13 The mouthpiece 102 shown is initially rotated 90 degrees to align the radial member 134 with the inlet of the longitudinal portion of the L-shaped groove of the retaining structure 140. The mouthpiece 102 is then pushed into the retaining structure 140, causing the radial member 134 to slide along the longitudinal portion of the L-shaped groove until it reaches the engagement point with each circumferential portion. At this point, the mouthpiece 102 is then rotated, causing the radial member 134 to travel across the circumferential portions until it reaches the end of each circumferential portion. With a serif portion present at each end, tactile and / or auditory feedback (e.g., an audible click) can be generated to notify the adult smoker that the mouthpiece 102 has been correctly engaged with the device housing.

[0101] Mouthpiece 102 defines a vapor passage 136 through which non-nicotine vapor flows during smoking. Vapor passage 136 is in fluid communication with through-hole 150 (where the non-nicotine pod assembly 300 is housed / positioned within device body 100). The proximal end of vapor passage 136 may include a flared portion. Additionally, mouthpiece 102 may include an end cap 138. End cap 138 may taper from its distal end to its proximal end. The outlet face of end cap 138 defines a plurality of vapor outlets. Although four vapor outlets are shown in end cap 138, it should be understood that the exemplary embodiments are not limited thereto.

[0102] Figure 14 It involves Figure 9 A partial exploded view of the border structure. Figure 15 yes Figure 14 Enlarged perspective view of the mouthpiece, spring, retaining structure, and frame structure. (Refer to...) Figure 14-15The frame structure 112 includes an upstream sidewall and a downstream sidewall. The upstream sidewall of the frame structure 112 defines a connector opening 146. The connector opening 146 is configured to expose or receive the device electrical connector 132 of the device body 100. The downstream sidewall of the frame structure 112 defines a first downstream opening 148a, a second downstream opening 148b, and a third downstream opening 148c. The first downstream opening 148a and the second downstream opening 148b of the frame structure 112 are configured to receive a first downstream protrusion 130a and a second downstream protrusion 130b of the retaining structure 140, respectively. The third downstream opening 148c of the frame structure 112 is configured to receive the distal end of the mouthpiece 102.

[0103] like Figure 14 As shown, the first downstream protrusion 130a and the second downstream protrusion 130b are located on the concave surface of the retaining structure 140. Figure 15 As shown, the first support 142a and the second support 142b are located on the opposing convex surfaces of the retaining structure 140. The first spring 144a and the second spring 144b are respectively disposed on the first support 142a and the second support 142b. The first spring 144a and the second spring 144b are configured to bias the retaining structure 140 against the frame structure 112.

[0104] When assembled, the frame structure 112 can be secured to the frame 106 via a pair of tabs adjacent to the connector opening 146. Additionally, the retaining structure 140 abuts against the frame structure 112, such that the first downstream protrusion 130a and the second downstream protrusion 130b extend through the first downstream opening 148a and the second downstream opening 148b, respectively. The mouthpiece 102 is coupled to the retaining structure 140, such that the distal end of the mouthpiece 102 extends through the retaining structure 140 and the third downstream opening 148c of the frame structure 112. The first spring 144a and the second spring 144b are located between the frame 106 and the retaining structure 140.

[0105] When the non-nicotine pod assembly 300 is inserted into the through-hole 150 of the device body 100, the downstream end of the non-nicotine pod assembly 300 abuts against the first downstream protrusion 130a and the second downstream protrusion 130b of the retaining structure 140. As a result, the first downstream protrusion 130a and the second downstream protrusion 130b of the retaining structure 140 will elastically yield and retract from the through-hole 150 of the device body 100 (by means of compression of the first spring 144a and the second spring 144b), thereby allowing continued insertion of the non-nicotine pod assembly 300. In an exemplary embodiment, when the first downstream protrusion 130a and the second downstream protrusion 130b are fully retracted from the through-hole 150 of the device body 100, displacement of the retaining structure 140 may cause the ends of the first post 142a and the second post 142b to contact the inner end faces of the frame 106. Furthermore, since the mouthpiece 102 is connected to the retaining structure 140, the distal end of the mouthpiece 102 will retract from the through hole 150, thereby causing the proximal end of the mouthpiece 102 (e.g., including the visible portion of the end cap 138) to also move a corresponding distance from the device housing.

[0106] Once the non-nicotine pod assembly 300 is fully inserted such that the first and second downstream recesses of the non-nicotine pod assembly 300 reach positions that allow engagement with the first and second downstream protrusions 130a and 130b, respectively, the stored energy from the compressed first and second springs 144a and 144b causes the first and second downstream protrusions 130a and 130b to elastically extend and engage with the first and second downstream recesses of the non-nicotine pod assembly 300, respectively. Furthermore, engagement can produce tactile and / or auditory feedback (e.g., an audible click) to notify the adult smoker that the non-nicotine pod assembly 300 is correctly positioned within the through-hole 150 of the device body 100.

[0107] Figure 16 It involves Figure 14 Exploded views of the front cover, frame, and rear cover. (Refer to...) Figure 16 Various mechanical, electronic, and / or circuitry associated with the operation of the non-nicotine electronic cigarette device 500 can be secured to the frame 106. The front cover 104 and rear cover 108 can be configured to engage with the frame 106 via a snap-fit ​​arrangement. In one exemplary embodiment, the front cover 104 and rear cover 108 include clips configured to interlock with corresponding mating members of the frame 106. The clips may be in the form of tabs with orifices configured to receive corresponding mating members of the frame 106 (e.g., protrusions with beveled edges). Figure 16In the case of the front cover 104, there are two rows of four clips in each row (eight clips in total for the front cover 104). Similarly, the rear cover 108 has two rows of four clips in each row (eight clips in total for the rear cover 108). The corresponding mating members of the frame 106 can be located on the inner sidewall of the frame 106. Therefore, when the front cover 104 and the rear cover 108 are snapped together, the engaging clips and mating members can be hidden and not visible. Alternatively, the front cover 104 and / or the rear cover 108 can be configured to engage with the frame 106 via an interference fit. However, it should be understood that the front cover 104, the frame 106, and the rear cover 108 can be connected via other suitable arrangements and techniques.

[0108] Figure 17 yes Figure 6 A perspective view of the non-nicotine pod component of a non-nicotine electronic cigarette device. Figure 18 yes Figure 17 Another perspective view of the non-nicotine pod components. Figure 19 yes Figure 18 Another perspective view of the non-nicotine pod component. (Refer to...) Figure 17-19 A non-nicotine pod assembly 300 for a non-nicotine electronic cigarette device 500 includes a pod body configured to contain a non-nicotine vapor precursor formulation. The pod body has an upstream end and a downstream end. The upstream end of the pod body defines a cavity 310. Figure 20 The downstream end of the pod body defines a pod outlet 304, which is in fluid communication with a cavity 310 at the upstream end. A connector module 320 is configured to be positioned within the cavity 310 of the pod body. The connector module 320 includes an outer surface and side surfaces. The outer surface of the connector module 320 forms the exterior of the pod body.

[0109] The outer surface of connector module 320 defines a pod inlet 322. The pod inlet 322 (through which air enters during smoking) is in fluid communication with a pod outlet 304 (through which non-nicotine vapor exits during smoking). The pod inlet 322... Figure 19 The connector module 320 is shown in the form of a slot. However, it should be understood that the exemplary embodiment is not limited to this, and other forms are also possible. When the connector module 320 is in place within the cavity 310 of the pod body, the outer surface of the connector module 320 remains visible, while most of the sides of the connector module 320 are blocked, so that they are only partially visible through the pod inlet 322 at a given angle.

[0110] The outer surface of connector module 320 includes at least one electrical contact. This at least one electrical contact may include multiple electrical contacts. For example, the multiple electrical contacts may include a first electrical contact 324a and a second electrical contact 324b. The first electrical contact 324a of the non-nicotine pod assembly 300 is configured to contact the first pair of electrical contacts of the device electrical connector 132 of the device body 100 (e.g., with...). Figure 12 The first upstream protrusion 128a in the device body 100 is adjacent to a pair of electrical contacts. Similarly, the second electrical contacts 324b of the non-nicotine pod assembly 300 are configured to connect with the second pair of electrical contacts of the device electrical connector 132 of the device body 100 (e.g., with...). Figure 12 The second upstream protrusion 128b is adjacent to a pair of other protrusions in the nicotine pod assembly 300. Additionally, at least one electrical contact of the non-nicotine pod assembly 300 includes a plurality of data contacts 326. The plurality of data contacts 326 of the non-nicotine pod assembly 300 are configured to connect with the data contacts of the device electrical connector 132 (e.g., Figure 12 The electrical connection is a row of five protrusions. Although the non-nicotine pod assembly 300 shows two electrical contacts and five data contacts, it should be understood that other variations are possible depending on the design of the device body 100.

[0111] In one exemplary embodiment, the non-nicotine pod assembly 300 includes a front surface, a back surface opposite the front surface, a first side surface located between the front surface and the back surface, a second side surface opposite the first side surface, an upstream end face, and a downstream end face opposite the upstream end face. The corners of the side surfaces and end faces (e.g., the corner between the first side surface and the upstream end face, the corner between the upstream end face and the second side surface, the corner between the second side surface and the downstream end face, and the corner between the downstream end face and the first side surface) may be rounded. However, in some cases, the corners may be angled. Additionally, the peripheral edge of the front surface may be flanged. The outer surface of the connector module 320 may be considered part of the upstream end face of the non-nicotine pod assembly 300. The front surface of the non-nicotine pod assembly 300 may be wider and longer than the back surface. In this case, the first and second side surfaces may be inclined inwards towards each other. The upstream and downstream end faces may also be inclined inwards towards each other. Due to the angled surface, insertion of the non-nicotine pod assembly 300 will be unidirectional (e.g., inserted from the front of the device body 100 (the side associated with the front cover 104)). As a result, the possibility of the non-nicotine pod assembly 300 being incorrectly inserted into the device body 100 can be reduced or prevented.

[0112] As shown in the figure, the pod body of the non-nicotine pod assembly 300 includes a first shell section 302 and a second shell section 308. The first shell section 302 has a downstream end defining a pod outlet 304. The edge of the pod outlet 304 may optionally be a recessed or indented region. In this case, the region may resemble a bay, wherein the side of the edge adjacent to the back of the non-nicotine pod assembly 300 may be open, while the side of the edge adjacent to the front may be surrounded by a protrusion at the downstream end of the first shell section 302. The protrusion may serve as a stop for the distal end of the mouthpiece 102. As a result, this configuration of the pod outlet 304 facilitates the use of the mouthpiece 102 (e.g., Figure 11The distal end of the mouthpiece 102 is received and aligned via an open side of the edge and a protrusion that subsequently abuts the downstream end of the first housing section 302. In a non-limiting embodiment, the distal end of the mouthpiece 102 may also include an elastic material (or be formed therefrom) to help form a seal around the pod outlet 304 when the non-nicotine pod assembly 300 is properly inserted into the through-hole 150 of the device body 100.

[0113] The downstream end of the first housing section 302 further defines at least one downstream recess. In an exemplary embodiment, the at least one downstream recess takes the form of a first downstream recess 306a and a second downstream recess 306b. The pod outlet 304 may be located between the first downstream recess 306a and the second downstream recess 306b. The first downstream recess 306a and the second downstream recess 306b are configured to engage with the first downstream protrusion 130a and the second downstream protrusion 130b of the device body 100, respectively. Figure 11 As shown, the first downstream protrusion 130a and the second downstream protrusion 130b of the device body 100 can be disposed at adjacent corners of the downstream sidewall of the through hole 150. The first downstream recess 306a and the second downstream recess 306b can each be in the form of a V-shaped notch. In this case, each of the first downstream protrusion 130a and the second downstream protrusion 130b of the device body 100 can be in the form of a wedge structure configured to engage with the corresponding V-shaped notches of the first downstream recess 306a and the second downstream recess 306b. The first downstream recess 306a can abut against the corner of the downstream end face and the first side face, while the second downstream recess 306b can abut against the corner of the downstream end face and the second side face. As a result, the edges of the first downstream recess 306a and the second downstream recess 306b adjacent to the first side face and the second side face, respectively, can be open. In this case, as Figure 18 As shown, each of the first downstream recess 306a and the second downstream recess 306b can be a three-sided recess.

[0114] The second housing section 308 has an upstream end that defines a cavity 310. Figure 20 The cavity 310 is configured to receive the connector module 320. Figure 21 Additionally, the upstream end of the second housing section 308 defines at least one upstream recess. In one exemplary embodiment, this at least one upstream recess takes the form of a first upstream recess 312a and a second upstream recess 312b. The pod inlet 322 may be located between the first upstream recess 312a and the second upstream recess 312b. The first upstream recess 312a and the second upstream recess 312b are configured to engage with the first upstream protrusion 128a and the second upstream protrusion 128b of the device body 100, respectively. Figure 12As shown, the first upstream protrusion 128a and the second upstream protrusion 128b of the device body 100 can be located at adjacent corners of the upstream sidewall of the through hole 150. The depth of each of the first upstream recess 312a and the second upstream recess 312b can be greater than the depth of each of the first downstream recess 306a and the second downstream recess 306b. The end of each of the first upstream recess 312a and the second upstream recess 312b can also be more rounded than the end of each of the first downstream recess 306a and the second downstream recess 306b. For example, the first upstream recess 312a and the second upstream recess 312b can each be in the form of a U-shaped notch. In this case, each of the first upstream protrusion 128a and the second upstream protrusion 128b of the device body 100 can be in the form of a spherical protrusion configured to engage with the corresponding U-shaped notch of the first upstream recess 312a and the second upstream recess 312b. The first upstream recess 312a can abut against the corner of the upstream end face and the first side face, while the second upstream recess 312b can abut against the corner of the upstream end face and the second side face. As a result, the edges of the first upstream recess 312a and the second upstream recess 312b, which are adjacent to the first side face and the second side face respectively, can be open.

[0115] The first housing section 302 may define a non-nicotine reservoir therein, the non-nicotine reservoir being configured to hold a non-nicotine vapor precursor formulation. The non-nicotine reservoir may be configured to hermetically seal the non-nicotine vapor precursor formulation until the non-nicotine pod assembly 300 is activated to release the non-nicotine vapor precursor formulation from the non-nicotine reservoir. Due to the hermetically sealed nature, the non-nicotine vapor precursor formulation can be isolated from the environment and from the internal components of the non-nicotine pod assembly 300 that may react with the non-nicotine vapor precursor formulation, thereby reducing or preventing the possibility of adverse effects on the shelf life and / or sensory characteristics (e.g., flavor) of the non-nicotine vapor formulation. The second housing section 308 may include a structure configured to activate the non-nicotine pod assembly 300 and receive and heat the non-nicotine vapor precursor formulation released from the non-nicotine reservoir after activation.

[0116] The non-nicotine pod assembly 300 can be manually activated by an adult smoker before being inserted into the device body 100. Alternatively, the non-nicotine pod assembly 300 can be activated while the non-nicotine pod assembly 300 is partially inserted into the device body 100. In one exemplary embodiment, the second housing segment 308 of the pod body includes a perforator configured to release a non-nicotine vapor precursor formulation from a non-nicotine reservoir during activation of the non-nicotine pod assembly 300. The perforator may take the form of a first activation pin 314a and a second activation pin 314b, which will be discussed in more detail herein.

[0117] To manually activate the non-nicotine pod assembly 300, an adult smoker may press the first activation pin 314a and the second activation pin 314b inward before inserting the non-nicotine pod assembly 300 into the through-hole 150 of the device body 100 (e.g., simultaneously or sequentially). For example, the first activation pin 314a and the second activation pin 314b may be manually pressed until their ends are substantially flush with the upstream end face of the non-nicotine pod assembly 300. In an exemplary embodiment, the inward movement of the first activation pin 314a and the second activation pin 314b causes the seal of the non-nicotine reservoir to be punctured or otherwise broken, thereby releasing the non-nicotine vapor precursor formulation therefrom.

[0118] Alternatively, in order to activate the non-nicotine pod assembly 300 when it is partially inserted into the device body 100, the non-nicotine pod assembly 300 is initially positioned such that the first upstream recess 312a and the second upstream recess 312b engage (e.g., upstream engagement) with the first upstream protrusion 128a and the second upstream protrusion 128b, respectively. Since each of the first upstream protrusion 128a and the second upstream protrusion 128b of the device body 100 can be in the form of a spherical protrusion configured to engage with a corresponding U-shaped notch in the first upstream recess 312a and the second upstream recess 312b, the non-nicotine pod assembly 300 can then be pivoted relatively easily about the first upstream protrusion 128a and the second upstream protrusion 128b and enter the through-hole 150 of the device body 100.

[0119] Regarding the pivoting of the non-nicotine pod assembly 300, the axis of rotation can be considered to extend through the first upstream protrusion 128a and the second upstream protrusion 128b and be orthogonal to the longitudinal axis of the device body 100. During the initial positioning and subsequent pivoting of the non-nicotine pod assembly 300, the first activation pin 314a and the second activation pin 314b will contact the upstream sidewall of the through-hole 150 and will change from an extended state to a retracted state as the first activation pin 314a and the second activation pin 314b are pushed (e.g., simultaneously) into the second housing section 308 as the non-nicotine pod assembly 300 enters the through-hole 150. When the downstream end of the non-nicotine pod assembly 300 reaches the vicinity of the downstream sidewall of the through-hole 150 and contacts the first downstream protrusion 130a and the second downstream protrusion 130b, the first downstream protrusion 130a and the second downstream protrusion 130b will retract and then elastically extend (e.g., spring back) when the positioning of the non-nicotine pod assembly 300 allows the first downstream protrusion 130a and the second downstream protrusion 130b of the device body 100 to engage (e.g., downstream engagement) with the first downstream recess 306a and the second downstream recess 306b of the non-nicotine pod assembly 300, respectively.

[0120] As described above, according to an exemplary embodiment, the mouthpiece 102 is fixed to the retaining structure 140 (of which the first downstream protrusion 130a and the second downstream protrusion 130b are part). In this case, the retraction of the first downstream protrusion 130a and the second downstream protrusion 130b from the through-hole 150 will cause the mouthpiece 102 to move simultaneously by a corresponding distance in the same direction (e.g., the downstream direction). Conversely, when the non-nicotine pod assembly 300 has been fully inserted to facilitate downstream engagement, the mouthpiece 102 will spring back simultaneously with the first downstream protrusion 130a and the second downstream protrusion 130b. In addition to the elastic engagement of the first downstream protrusion 130a and the second downstream protrusion 130b, the distal end of the mouthpiece 102 is also configured such that when the non-nicotine pod assembly 300 is properly positioned within the through-hole 150 of the device body 100, the distal end of the mouthpiece 102 is biased / pressed against the non-nicotine pod assembly 300 (and aligned with the pod outlet 304 to form a relatively vapor-impermeable seal).

[0121] Furthermore, downstream engagement can produce an audible click and / or tactile feedback to indicate that the non-nicotine pod assembly 300 is correctly positioned within the through-hole 150 of the device body 100. When correctly positioned, the non-nicotine pod assembly 300 will be mechanically, electrically, and fluidly connected to the device body 100. Although the non-limiting embodiments herein describe upstream engagement of the non-nicotine pod assembly 300 as occurring prior to downstream engagement, it should be understood that the associated mating, activation, and / or electrical arrangements may be reversed, such that downstream engagement occurs prior to upstream engagement.

[0122] Figure 20 It does not include a connector module. Figure 19 A perspective view of the non-nicotine pod components. (Refer to...) Figure 20 The upstream end of the second housing section 308 defines a cavity 310. As described above, the cavity 310 is configured to receive the connector module 320 (e.g., via an interference fit). In an exemplary embodiment, the cavity 310 is located between a first upstream recess 312a and a second upstream recess 312b and also between a first activation pin 314a and a second activation pin 314b. Without the connector module 320, the insert 342 ( Figure 24 ) and absorbent material 346 ( Figure 25 The recessed opening in cavity 310 is visible. Insert 342 is configured to retain absorbent material 346. Absorbent material 346 is configured to absorb and retain a certain amount of the non-nicotine vapor precursor formulation released from the non-nicotine reservoir when the non-nicotine capsule assembly 300 is activated. Insert 342 and absorbent material 346 will be discussed in more detail herein.

[0123] Figure 21 yes Figure 19A perspective view of the connector module in the image. Figure 22 yes Figure 21 Another perspective view of the connector module. Referring to 21-22, the overall frame of the connector module 320 includes a module housing 354 and a panel 366. Additionally, the connector module 320 has multiple faces, including an outer surface and side surfaces, wherein the outer surface is adjacent to the side surfaces. In one exemplary embodiment, the outer surface of the connector module 320 is formed by an upstream surface including the panel 366, a first electrical contact 324a, a second electrical contact 324b, and a data contact 326. The side surfaces of the connector module 320 are part of the module housing 354. The side surfaces of the connector module 320 define a first module inlet 330 and a second module inlet 332. Furthermore, two lateral faces adjacent to the side surfaces (which are also part of the module housing 354) may include rib structures (e.g., compression ribs) configured to facilitate an interference fit when the connector module 320 is positioned within the cavity 310 of the pod body. For example, each of the two lateral faces may include a pair of rib structures that taper away from the panel 366. As a result, as the connector module 320 is pressed into the cavity 310 of the pod body, the module housing 354 will encounter increased resistance due to friction between the rib structure and the transverse wall of the cavity 310. When the connector module 320 is in place within the cavity 310, the panel 366 can be substantially flush with the upstream end of the second housing section 308. Moreover, the side of the connector module 320 (which defines the first module inlet 330 and the second module inlet 332) will face the side wall of the cavity 310.

[0124] The panel 366 of the connector module 320 may have a slotted edge 328 that combines with the corresponding side surface of the cavity 310 to define a pod inlet 322. However, it should be understood that the exemplary embodiments are not limited thereto. For example, the panel 366 of the connector module 320 may alternatively be configured to completely define the pod inlet 322. The side surface of the connector module 320 (which defines the first module inlet 330 and the second module inlet 332) and the sidewall of the cavity 310 (facing the side) define an intermediate space between them. This intermediate space is located downstream of the pod inlet 322 and upstream of the first module inlet 330 and the second module inlet 332. Thus, in one exemplary embodiment, the pod inlet 322 is in fluid communication with the first module inlet 330 and the second module inlet 332 via the intermediate space. The first module inlet 330 may be larger than the second module inlet 332. In this configuration, when the pod inlet 322 receives air intake during smoking, the first module inlet 330 may receive the primary airflow (e.g., a larger flow rate) of the intake air, while the second module inlet 332 may receive the secondary airflow (e.g., a smaller flow rate) of the intake air.

[0125] like Figure 22As shown, connector module 320 includes a wick 338 configured to transfer a non-nicotine vapor precursor formulation to heater 336. Heater 336 is configured to heat the non-nicotine vapor precursor formulation to generate vapor during smoking. Heater 336 may be mounted in connector module 320 via contact core 334. Heater 336 is electrically connected to at least one electrical contact of connector module 320. For example, one end of heater 336 (e.g., a first end) may be connected to a first electrical contact 324a, while the other end of heater 336 (e.g., a second end) may be connected to a second electrical contact 324b. In one exemplary embodiment, heater 336 includes a bent heating element. In this case, wick 338 may have a planar form configured to be held by the bent heating element. When the connector module 320 is in place within the cavity 310 of the pod body, the absorbent core 338 is configured to be in fluid communication with the absorbent material 346, such that a non-nicotine vapor precursor formulation in the absorbent material 346 (when the non-nicotine pod assembly 300 is activated) is transferred to the absorbent core 338 via capillary action.

[0126] Figure 23 It involves Figure 22 An exploded view of the liquid suction core, heater, electrical leads, and contact core. (Refer to...) Figure 23 The absorbent core 338 can be a fiber pad or other structure with small holes / gapes designed for capillary action. Additionally, the absorbent core 338 can have an irregular hexagonal shape, but the exemplary embodiments are not limited thereto. The absorbent core 338 can be manufactured in a hexagonal shape or cut into this shape from a larger sheet of material. Because the lower section of the absorbent core 338 gradually tapers towards the curved / wound section towards the heater 336, the possibility of non-nicotine vapor precursor formulations being located in the following portion of the absorbent core 338—a portion that continuously avoids evaporation (due to its distance from the heater 336)—can be reduced or avoided.

[0127] In one exemplary embodiment, heater 336 is configured to undergo Joule heating (also known as ohmic / resistive heating) when an electric current is applied thereto. More specifically, heater 336 may be formed of one or more conductors and configured to generate heat when an electric current passes through them. The electric current may be supplied from a power source (e.g., a battery) within device body 100 and transmitted to heater 336 via first electrical contact 324a and first electrical lead 340a (or via second electrical contact 324b and second electrical lead 340b).

[0128] Suitable conductors for heater 336 include iron-based alloys (e.g., stainless steel) and / or nickel-based alloys (e.g., nickel-chromium alloys). Heater 336 may be made of a conductive sheet (e.g., metal, alloy) that is stamped to cut a curved pattern from it. The curved pattern may have curved segments arranged alternately with horizontal segments to allow the horizontal segments to zigzag back and forth while extending in parallel. Additionally, the width of each horizontal segment of the curved pattern may be approximately equal to the spacing between adjacent horizontal segments of the curved pattern, but exemplary embodiments are not limited thereto. To obtain the form of heater 336 shown in the figures, the curved pattern may be bent to clamp the wick 338.

[0129] The contact core 334 is formed of an insulating material and configured to electrically isolate the first electrical lead 340a from the second electrical lead 340b. In an exemplary embodiment, the first electrical lead 340a and the second electrical lead 340b each define a female aperture configured to engage with a corresponding male member of the contact core 334. Once engaged, the first and second ends of the heater 336 can be secured (e.g., soldered, brazed, or brazed) to the first electrical lead 340a and the second electrical lead 340b, respectively. The contact core 334 can then be positioned in a corresponding socket in the module housing 354 (e.g., via an interference fit). After the connector module 320 is assembled, the first electrical lead 340a electrically connects the first end of the heater 336 to the first electrical contact 324a, while the second electrical lead 340b electrically connects the second end of the heater 336 to the second electrical contact 324b. The heater and related structures are described in more detail in U.S. Patent Application No. 15 / 729,909 (Attorney’s File No.: 24000-000371-US), filed on October 11, 2017, entitled “Folded Heater For Electronic Vaping Device,” the entire contents of which are incorporated herein by reference.

[0130] Figure 24 It involves Figure 17 An exploded view of the first shell section of the non-nicotine pod assembly. (Refer to...) Figure 24The first housing section 302 includes a vapor passage 316. The vapor passage 316 is configured to receive non-nicotine vapor generated by the heater 336 and is in fluid communication with the pod outlet 304. In one exemplary embodiment, the size (e.g., diameter) of the vapor passage 316 may gradually increase as it extends toward the pod outlet 304. Additionally, the vapor passage 316 may be integrally formed with the first housing section 302. An encapsulation 318, an insert 342, and a seal 344 are provided at the upstream end of the first housing section 302 to define the non-nicotine reservoir of the non-nicotine pod assembly 300. For example, the encapsulation 318 may be disposed along the edge of the first housing section 302. Insert 342 can be positioned within the first housing section 302 such that the outer peripheral surface of insert 342 engages along its edge with the inner surface of the first housing section 302 (e.g., via an interference fit), such that the interface between the outer peripheral surface of insert 342 and the inner surface of the first housing section 302 is fluid-impermeable (e.g., liquid-impermeable and / or gas-impermeable). Furthermore, seal 344 is attached to the upstream side of insert 342 to close the non-nicotine reservoir outlet in insert 342, thereby providing fluid-impermeable (e.g., liquid-impermeable and / or gas-impermeable) containment of the non-nicotine vapor precursor formulation in the reservoir.

[0131] In one exemplary embodiment, the insert 342 includes a retainer portion protruding from the upstream side (e.g., Figure 24 (as shown) and the connector portion protruding from the downstream side (in) Figure 24 (Hidden and not visible). The retainer portion of the insert 342 is configured to retain the absorbent material 346, while the connector portion of the insert 342 is configured to engage with the vapor passage 316 of the first housing section 302. The connector portion of the insert 342 may be configured to sit within the vapor passage 316 and thus engage with the interior of the vapor passage 316. Alternatively, the connector portion of the insert 342 may be configured to receive the vapor passage 316 and thus engage with the exterior of the vapor passage 316. The insert 342 also defines a non-nicotine reservoir outlet when the seal 344 is punctured during activation of the non-nicotine pod assembly 300 (e.g.). Figure 24 As shown, a non-nicotine vapor precursor formulation flows through the reservoir outlet. The retainer portion and connector portion of the insert 342 may be located between the non-nicotine reservoir outlets (e.g., the first and second non-nicotine reservoir outlets), although the exemplary embodiment is not limited thereto. Furthermore, the insert 342 defines a vapor conduit extending through the retainer portion and connector portion. As a result, when the insert 342 is in place within the first housing section 302, the vapor conduit of the insert 342 will align with and be in fluid communication with the vapor passage 316, thereby forming a continuous path through the non-nicotine reservoir to the pod outlet 304 for generating non-nicotine vapor via the heater 336 during smoking.

[0132] A seal 344 is attached to the upstream side of the insert 342 to cover the non-nicotine reservoir outlet in the insert 342. In one exemplary embodiment, the seal 344 defines an opening (e.g., a central opening) configured to provide an associated clearance to accommodate a retainer portion (which protrudes from the upstream side of the insert 342) when the seal 344 is attached to the insert 342. Figure 24 It should be understood that seal 344 is shown to be in a punctured state. Specifically, when seal 344 is punctured by the first activation pin 314a and the second activation pin 314b of the non-nicotine pod assembly 300, the two punctured sections of seal 344 will be pushed into the non-nicotine reservoir as flaps (e.g., Figure 24 As shown), this forms two perforated openings in the seal 344 (e.g., one on each side of the central opening). The size and shape of the perforated openings in the seal 344 may correspond to the size and shape of the non-nicotine reservoir outlet in the insert 342. Conversely, when in an unpunctured state, the seal 344 will have a planar form and only one opening (e.g., a central opening). The seal 344 is designed to be robust enough to remain intact during normal movement and / or handling of the non-nicotine pod assembly 300, thus preventing premature / accidental breakage. For example, the seal 344 may be a coated foil (e.g., aluminum-backed Tritan).

[0133] Figure 25 It involves Figure 17 A partially exploded view of the second shell section of the non-nicotine pod assembly. (Refer to...) Figure 25 The second housing section 308 is configured to house various elements configured to release, receive, and heat a non-nicotine vapor precursor formulation. For example, a first activation pin 314a and a second activation pin 314b are configured to puncture a non-nicotine reservoir in the first housing section 302 to release the non-nicotine vapor precursor formulation. Each of the first activation pin 314a and the second activation pin 314b has a distal end extending through a corresponding opening in the second housing section 308. In an exemplary embodiment, the distal ends of the first activation pin 314a and the second activation pin 314b are visible after assembly (e.g., Figure 17The remaining portions of the first activation pin 314a and the second activation pin 314b are concealed within the non-nicotine capsule assembly 300 and are not visible. Additionally, each of the first activation pin 314a and the second activation pin 314b has a proximal end positioned adjacent to and upstream of the seal 344 prior to activation of the non-nicotine capsule assembly 300. When the first activation pin 314a and the second activation pin 314b are pushed into the second housing section 308 to activate the non-nicotine capsule assembly 300, the proximal end of each of the first activation pin 314a and the second activation pin 314b will advance through the insert 342 and thus puncture the seal 344, releasing the non-nicotine vapor precursor formulation from the non-nicotine reservoir. The movement of the first activation pin 314a can be independent of the movement of the second activation pin 314b (and vice versa). The first activation pin 314a and the second activation pin 314b will be discussed in more detail herein.

[0134] Absorbent material 346 is configured to be used with the retainer portion of insert 342 (e.g. Figure 24 As shown, it can protrude from the upstream side of the insert 342. The absorbent material 346 may have an annular form, but the exemplary embodiment is not limited thereto. Figure 25 As shown, the absorbent material 346 can resemble a hollow cylinder. In this case, the outer diameter of the absorbent material 346 can be approximately equal to (or slightly larger than) the length of the absorbent core 338. The inner diameter of the absorbent material 346 can be smaller than the average outer diameter of the retainer portion of the insert 342 to form an interference fit. To facilitate engagement with the absorbent material 346, the tip of the retainer portion of the insert 342 can be tapered. Additionally, although in Figure 25 While the inner portion is hidden and not visible, a recess may be defined on the downstream side of the second housing section 308, configured to receive and support the absorbent material 346. An example of such a recess could be a circular chamber in fluid communication with and downstream of the cavity 310. The absorbent material 346 is configured to receive and retain a quantity of the non-nicotine vapor precursor formulation released from the non-nicotine reservoir when the non-nicotine pod assembly 300 is activated.

[0135] The absorbent core 338 is positioned within the non-nicotine pod assembly 300 to be in fluid communication with the absorbent material 346, allowing the non-nicotine vapor precursor formulation to be drawn from the absorbent material 346 to the heater 336 via capillary action. The absorbent core 338 may be in physical contact with the upstream side of the absorbent material 346 (e.g., based on...). Figure 25 The view shown is of the bottom of the absorbent material 346. Additionally, the absorbent core 338 may be aligned with the diameter of the absorbent material 346, although the exemplary embodiment is not limited thereto.

[0136] like Figure 25 (and previous ones) Figure 23As shown, heater 336 may have a bent configuration to clamp the opposing surfaces of wick 338 and establish thermal contact with the opposing surfaces of wick 338. Heater 336 is configured to heat wick 338 to generate vapor during smoking. To facilitate this heating, a first end of heater 336 may be electrically connected to a first electrical contact 324a via a first electrical lead 340a, and a second end of heater 336 may be electrically connected to a second electrical contact 324b via a second electrical lead 340b. As a result, current can be supplied from a power source (e.g., a battery) within the device body 100 and transmitted to heater 336 via the first electrical contact 324a and the first electrical lead 340a (or via the second electrical contact 324b and the second electrical lead 340b). The first electrical lead 340a and the second electrical lead 340b (in...) Figure 23 (Shown separately) can engage with contact core 334 (as shown in the image) Figure 25 (As shown). For the sake of brevity, this section will not repeat what has already been discussed above (e.g., in conjunction with...). Figure 21-22 Other relevant details regarding the configuration of the connector module 320, which is positioned within the cavity 310 of the second housing section 308, are as follows: During smoking, non-nicotine vapor generated by the heater 336 is drawn from the pod outlet 304 of the non-nicotine pod assembly 300 through the steam conduit of the insert 342, through the steam passage 316 of the first housing section 302, and reaches the steam outlet through the steam passage 136 of the mouthpiece 102.

[0137] Figure 26 yes Figure 25 An exploded diagram of the activation pin. (Refer to...) Figure 26 The activation pin can be in the form of a first activation pin 314a and a second activation pin 314b. While two activation pins are shown and discussed in conjunction with non-limiting embodiments herein, it should be understood that, alternatively, the non-nicotine pod assembly 300 may include only one activation pin. Figure 26 In this configuration, the first activation pin 314a may include a first blade 348a, a first actuator 350a, and a first O-ring 352a. Similarly, the second activation pin 314b may include a second blade 348b, a second actuator 350b, and a second O-ring 352b.

[0138] In one exemplary embodiment, the first blade 348a and the second blade 348b are configured to be mounted or attached, respectively, to the upper portions (e.g., proximal portions) of the first actuator 350a and the second actuator 350b. Mounting or attachment can be achieved via snap-fit ​​connection, interference fit (e.g., friction fit) connection, adhesive, or other suitable joining techniques. The tip of each of the first blade 348a and the second blade 348b may have one or more curved or concave edges that taper upwards towards the tip. For example, each of the first blade 348a and the second blade 348b may have two tips with a concave edge between them and a curved edge adjacent to each tip. The radii of curvature of the concave edge and the curved edge may be the same, while the arc lengths may be different. The first blade 348a and the second blade 348b may be formed from a sheet of metal (e.g., stainless steel) that has been cut or otherwise shaped to have a desired profile and bent into its final form. In another example, the first blade 348a and the second blade 348b may be formed from plastic.

[0139] Based on the plan view, the dimensions and shapes of the first blade 348a, the second blade 348b, and portions of the first actuator 350a and the second actuator 350b mounted thereon can correspond to the dimensions and shapes of the reservoir outlet in the insert 342. Additionally, as... Figure 26 As shown, the first actuator 350a and the second actuator 350b may include protruding edges (e.g., curved inner lips facing each other) configured to push the two punctured sections of the seal 344 into the non-nicotine reservoir as the first blade 348a and the second blade 348b are advanced into the non-nicotine reservoir. In a non-limiting embodiment, when the first activation pin 314a and the second activation pin 314b are fully inserted into the non-nicotine pod assembly 300, the two flaps (from the two punctured sections of the seal 344, such as...) Figure 24 (As shown) can be located between the curved sidewall of the reservoir outlet of insert 342 and the corresponding curvature of the protruding edges of the first actuator 350a and the second actuator 350b. As a result, the possibility of the two puncture openings in the seal 344 being blocked (by the two flaps from the two puncture sections) can be reduced or prevented. Furthermore, the first actuator 350a and the second actuator 350b can be configured to guide the non-nicotine vapor precursor formulation from the non-nicotine reservoir to the absorbent material 346.

[0140] The lower portion (e.g., distal portion) of each of the first actuator 350a and the second actuator 350b is configured to extend through the bottom section (e.g., upstream end) of the second housing section 308. This rod-like portion of each of the first actuator 350a and the second actuator 350b may also be referred to as a shaft. The first O-ring 352a and the second O-ring 352b can be positioned in annular grooves in the respective shafts of the first actuator 350a and the second actuator 350b. The first O-ring 352a and the second O-ring 352b are configured to engage with the inner surfaces of the shafts of the first actuator 350a and the second actuator 350b and the corresponding openings in the second housing section 308 to provide a fluid seal. As a result, when the first activation pin 314a and the second activation pin 314b are pushed inward to activate the non-nicotine capsule assembly 300, the first O-ring 352a and the second O-ring 352b can move together with the corresponding shafts of the first actuator 350a and the second actuator 350b within corresponding openings in the second housing section 308, while maintaining their respective seals. This helps to reduce or prevent leakage of the non-nicotine vapor precursor formulation through the openings in the second housing section 308 for the first activation pin 314a and the second activation pin 314b. The first O-ring 352a and the second O-ring 352b can be formed of silicone resin.

[0141] Figure 27 It does not include the liquid suction core, heater, electrical leads, and contact core. Figure 22 A perspective view of the connector module. Figure 28 yes Figure 27 An exploded view of the connector module. (Refer to...) Figure 27-28 The module housing 354 and the panel 366 generally form the outer frame of the connector module 320. The module housing 354 defines a first module inlet 330 and a slotted edge 356. The slotted edge 356 of the module housing 354 exposes a second module inlet 332 (defined by a bypass structure 358). However, it should be understood that the slotted edge 356 can also be considered to define a module inlet (e.g., in combination with the panel 366). The panel 366 has a slotted edge 328, which, together with the side corresponding to the cavity 310 of the second housing section 308, defines a pod inlet 322. In addition, the panel 366 defines a first contact opening, a second contact opening, and a third contact opening. The first and second contact openings may be square and configured to expose a first electrical contact 324a and a second electrical contact 324b, respectively, while the third contact opening may be rectangular and configured to expose a plurality of data contacts 326, but the exemplary embodiments are not limited thereto.

[0142] The first electrical contact 324a, the second electrical contact 324b, the printed circuit board (PCB) 362, and the bypass structure 358 are disposed within an external frame formed by the module housing 354 and the panel 366. The printed circuit board (PCB) 362 includes a plurality of data contacts 326 located on its upstream side (in... Figure 28 (Hidden and not visible in the middle) and sensor 364 located on its downstream side. Bypass structure 358 defines the second module inlet 332 and bypass outlet 360.

[0143] During assembly, the first electrical contact 324a and the second electrical contact 324b are positioned so that they are visible through the first contact opening and the second contact opening of the panel 366, respectively. Additionally, the printed circuit board (PCB) 362 is positioned such that a plurality of data contacts 326 located upstream of it are visible through the third contact opening of the panel 366. The PCB 362 may also overlap with the rear surfaces of the first electrical contact 324a and the second electrical contact 324b. A bypass structure 358 is positioned on the PCB 362 such that the sensor 364 is located within the airflow path defined by the second module inlet 332 and the bypass outlet 360. When assembled, the bypass structure 358 and the PCB 362 can be considered to be surrounded on at least four sides by the zigzag structure of the first electrical contact 324a and the second electrical contact 324b. In one exemplary embodiment, the bifurcated ends of the first electrical contact 324a and the second electrical contact 324b are configured to be electrically connected to the first electrical lead 340a and the second electrical lead 340b.

[0144] When the pod inlet 322 receives incoming air during smoking, the first module inlet 330 can receive the primary airflow (e.g., a larger flow rate), while the second module inlet 332 can receive the secondary airflow (e.g., a smaller flow rate). The secondary airflow can improve the sensitivity of the sensor 364. After exiting the bypass structure 358 through the bypass outlet 360, the secondary airflow re-merges with the primary airflow to form a combined flow, which is drawn in and passes through the contact core 334 to encounter the heater 336 and the suction core 338. In a non-limiting embodiment, the primary airflow can be 60-95% (e.g., 80-90%) of the incoming air, while the secondary airflow can be 5-40% (e.g., 10-20%).

[0145] The first module inlet 330 can be a resistance-to-drag (RTD) port, while the second module inlet 332 can be a bypass port. In this configuration, the draw resistance of the non-nicotine electronic cigarette device 500 can be adjusted by changing the size of the first module inlet 330 (rather than changing the size of the pod inlet 322). In one exemplary embodiment, the size of the first module inlet 330 can be selected such that the draw resistance is between 25 and 100 mmH2O (e.g., between 30 and 50 mmH2O). For example, a diameter of 1.0 mm for the first module inlet 330 can result in a draw resistance of 88.3 mmH2O. In another case, a diameter of 1.1 mm for the first module inlet 330 can result in a draw resistance of 73.6 mmH2O. In yet another case, a diameter of 1.2 mm for the first module inlet 330 can result in a draw resistance of 58.7 mmH2O. In yet another case, a diameter of 1.3 mm for the first module inlet 330 can result in a draw resistance of 43.8 mmH2O. It is worth noting that, due to its internal arrangement, the size of the first module inlet 330 can be adjusted without affecting the external aesthetics of the non-nicotine pod assembly 300, thereby allowing for a more standardized product design for pod assemblies with various suction resistances (RTDs), while also reducing the possibility of accidental intake blockage.

[0146] Figure 29 The electrical system of the device body and non-nicotine pod components of a non-nicotine electronic cigarette device according to one or more exemplary embodiments is shown.

[0147] Reference Figure 29 The electrical system includes the main equipment electrical system 2100 and the non-nicotine pod component electrical system 2200. The main equipment electrical system 2100 may be included in the main equipment 100, and the non-nicotine pod component electrical system 2200 may be included in the above-mentioned... Figure 1-28 In the non-nicotine pod assembly 300 of the non-nicotine electronic cigarette device 500 under discussion.

[0148] exist Figure 29 In the exemplary embodiment shown, the non-nicotine pod assembly electrical system 2200 includes a heater 336, one or more pod sensors 2220, and a non-volatile memory (NVM) 2205. The NVM 2205 may be an electrically erasable programmable read-only memory (EEPROM) integrated circuit (IC). The one or more pod sensors 2220 may include temperature sensing transducers.

[0149] The non-nicotine pod component electrical system 2200 may also include a main electrical / data interface (not shown) for transmitting power and / or data between the device body 100 and the non-nicotine pod component 300. According to at least one exemplary embodiment, Figure 17 The electrical contacts 324a, 324b and 326 shown can, for example, be used as the main electrical / data interface.

[0150] The main electrical system 2100 of the equipment includes a controller 2105, a power supply 2110, equipment sensors 2125, a thermal control circuit (also known as a thermal shutdown circuit) 2127, a smoke indicator 2135, and on-product controls 2150 (e.g., Figure 1 The buttons 118 and 120 shown), memory 2130, and clock circuit 2128 are also included. The device body electrical system 2100 may further include a pod electrical / data interface (not shown) for transmitting power and / or data between the device body 100 and the non-nicotine pod assembly 300. According to at least one exemplary embodiment, Figure 12 The device electrical connector 132 shown can be used, for example, as a pod electrical / data interface.

[0151] Power supply 2110 may be an internal power source for supplying power to the device body 100 and the non-nicotine pod assembly 300 of the non-nicotine electronic cigarette device 500. The power supply to power supply 2110 may be controlled by controller 2105 via power control circuitry (not shown). Power control circuitry may include one or more switches or transistors to adjust the power output from power supply 2110. Power supply 2110 may be a lithium-ion battery or a variant thereof (e.g., a lithium-ion polymer battery).

[0152] The controller 2105 can be configured to control the overall operation of the non-nicotine electronic cigarette device 500. According to at least some exemplary embodiments, the controller 2105 may include processing circuitry, such as: hardware including logic circuitry; a hardware / software combination, such as a processor executing software; or a combination thereof. For example, the processing circuitry may more specifically include, but is not limited to, a central processing unit (CPU), an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field-programmable gate array (FPGA), a system-on-a-chip (SoC), a programmable logic unit, a microprocessor, an application-specific integrated circuit (ASIC), etc.

[0153] exist Figure 29 In the exemplary embodiment shown, controller 2105 is illustrated as a microcontroller, which includes: input / output (I / O) interfaces, such as general purpose input / output (GPIO), internal integrated circuits (I / O), etc. 2 C) Interfaces such as a Serial Peripheral Interface Bus (SPI) interface; a multi-channel analog-to-digital converter (ADC); and a clock input terminal. However, exemplary embodiments are not limited to this example. In at least one exemplary embodiment, the controller 2105 may be a microprocessor.

[0154] The controller 2105 is communicatively coupled to the device sensor 2125, the thermal control circuit 2127, the smoking indicator 2135, the memory 2130, the product control 2150, the clock circuit 2128, and the power supply 2110.

[0155] The heat engine control circuit 2127 is connected to the controller 2105 via a GPIO pin. The memory 2130 is connected to the controller 2105 via an SPI pin. The clock circuit 2128 is connected to the clock input pin of the controller 2105. The smoking indicator 2135 is connected via I... 2 The C interface pins and GPIO pins are connected to the controller 2105. The device sensor 2125 is connected to the controller 2105 via the corresponding pins of the multi-channel ADC.

[0156] Clock circuit 2128 may be a timing mechanism, such as an oscillator circuit, to enable controller 2105 to track idle time, smoking duration, combinations of idle time and smoking duration, etc., of the non-nicotine electronic cigarette device 500. Clock circuit 2128 may also include a dedicated external clock crystal configured to generate a system clock for the non-nicotine electronic cigarette device 500.

[0157] Memory 2130 may be a non-volatile memory configured to store one or more shutdown logs. In one example, memory 2130 may store one or more shutdown logs in one or more tables. Memory 2130 and the one or more shutdown logs stored therein will be discussed in more detail later. In one example, memory 2130 may be an electrically erasable programmable read-only memory (EEPROM), such as flash memory.

[0158] Still refer to Figure 29 The device sensor 2125 may include multiple sensors or measurement circuits configured to provide signals indicative of sensor or measurement information to the controller 2105. Figure 29 In the example shown, device sensor 2125 includes heater current measurement circuit 21258, heater voltage measurement circuit 21252, and pod temperature measurement circuit 21250.

[0159] The heater current measurement circuit 21258 can be configured to output a signal (e.g., an output voltage) indicating the current flowing through the heater 336. See later. Figure 35 An exemplary embodiment of the heater current measurement circuit 21258 will be discussed in more detail.

[0160] The heater voltage measurement circuit 21252 can be configured to output a signal indicating the voltage across the heater 336 (e.g., output voltage). See later. Figure 34 An exemplary embodiment of the heater voltage measurement circuit 21252 will be discussed in more detail.

[0161] The capsule temperature measurement circuit 21250 can be configured to output a signal (e.g., an output voltage) indicating the resistance and / or temperature of one or more components of the non-nicotine capsule assembly 300. See later. Figure 36 and 37 An exemplary embodiment of the pod temperature measurement circuit 21250 will be discussed in more detail.

[0162] As described above, the capsule temperature measurement circuit 21250, the heater current measurement circuit 21258, and the heater voltage measurement circuit 21252 are connected to the controller 2105 via pins of a multi-channel ADC. To measure the characteristics and / or parameters of the non-nicotine electronic cigarette device 500 (e.g., the voltage, current, resistance, temperature, etc. of the heater 336), the multi-channel ADC at the controller 2105 can sample the signal output from the device sensor 2125 at a sampling rate suitable for the characteristics and / or parameters measured by the respective device sensor.

[0163] Despite Figure 29 As not shown in the diagram, the pod sensor 2220 may also include... Figure 28 The sensor 364 shown is described. In at least one exemplary embodiment, the sensor 364 may be a microelectromechanical system (MEMS) flow or pressure sensor or another type of sensor configured to measure air flow, such as a hot-wire anemometer.

[0164] The heating control circuit 2127 is connected to the controller 2105 via GPIO pins. The heating control circuit 2127 is configured to control (enable and / or disable) the heating mechanism of the non-nicotine electronic cigarette device 500 by controlling the power of the heater 336. As discussed in more detail later, the heating control circuit 2127 can disable the heating mechanism based on control signals from the controller 2105 (sometimes referred to herein as device power status signals).

[0165] When the non-nicotine capsule component 300 is inserted into the device body 100, the controller 2105 via I 2 The controller is communicatively coupled to at least the NVM2205 and the pod sensor 2220 via a Type-C interface. In one example, the controller 2105 can obtain operating parameters for the non-nicotine pod component electrical system 2200 from the NVM2205.

[0166] The controller 2105 can control the smoking indicator 2135 to indicate the status and / or operation of the non-nicotine electronic cigarette device 500 to an adult smoker. The smoking indicator 2135 may be at least partially transmitted via a light guide (e.g., Figure 1The light guide device shown is used, and may include a power indicator (e.g., an LED) that can be activated when the controller 2105 senses that it has been pressed down by an adult smoker. The smoking indicator 2135 may also include a vibrator, a speaker or other feedback mechanism, and may indicate the current status of smoking parameters (e.g., non-nicotine vapor quantity) controlled by the adult smoker.

[0167] Still refer to Figure 29 The controller 2105 can control the power of the heater 336 to heat the non-nicotine vapor precursor formulation according to a heating profile (e.g., heating based on volume, temperature, flavor, etc.). The heating profile can be determined based on empirical data and can be stored in the NVM 2205 of the non-nicotine capsule assembly 300.

[0168] Figure 30 This is a simplified block diagram illustrating a smoke exhaustion and automatic shutdown control system 2300 according to an exemplary embodiment. For the sake of brevity, the smoke exhaustion and automatic shutdown control system 2300 may be referred to herein as an automatic shutdown control system 2300.

[0169] Figure 30 The automatic shutdown control system 2300 shown can be implemented at the controller 2105. In one example, the automatic shutdown control system 2300 can be implemented as part of a device manager finite state machine (FSM) software implementation executed at the controller 2105. Figure 30 In the example shown, the automatic shutdown control system 2300 includes a depletion detection module 2610. However, it should be understood that the automatic shutdown control system 2300 may include various other subsystem modules.

[0170] Reference Figure 30 The automatic shutdown control system 2300, and more generally, the controller 2105, can identify a dry-out smoking state at the non-nicotine e-cigarette device 500, and in response to the identification of the dry-out smoking state, cause the controller 2105 to control one or more subsystems of the non-nicotine e-cigarette device 500 to perform one or more subsequent actions. The dry-out smoking state may sometimes be referred to as a dry-out smoking malfunction or a dry-out smoking malfunction state. The identification of the dry-out smoking state can be based on information and / or inputs such as threshold parameters of the non-nicotine pod assembly 300, pod sensor information from one or more pod sensors 2220, sensor information from one or more sensors 2125 of the device's main electrical system 2100, or any combination thereof. A dry-out smoking state is an example of a hard pod malfunction event in the non-nicotine e-cigarette device 500. A hard pod malfunction event is an event that may require corrective action (e.g., replacement of the non-nicotine pod assembly) to re-enable smoking functionality at the non-nicotine e-cigarette device 500.

[0171] The controller 2105 can control one or more subsystems by outputting one or more control signals (or enabling or disabling corresponding signals), as will be discussed in more detail later. In some cases, the control signals output from the controller 2105 may be referred to as device power status signals, device power status commands, or device power control signals. In at least one exemplary embodiment, the controller 2105 may output one or more control signals to the thermoelectric control circuit 2127 in response to detecting a depletion of smoking status at the non-nicotine electronic cigarette device 500, to shut down the smoking function at the non-nicotine electronic cigarette device 500.

[0172] According to one or more exemplary embodiments, the type of subsequent action at the non-nicotine electronic cigarette device 500 may be based on the depletion state and / or current operation of the non-nicotine electronic cigarette device 500. Multiple subsequent actions may be executed sequentially in response to a failure event such as a depletion state. In one example, the subsequent actions may include:

[0173] (i) Automatic shutdown operation, wherein the non-nicotine e-cigarette device 500 switches to a low-power state (e.g., equivalent to turning off the non-nicotine e-cigarette device using the power button);

[0174] (ii) Heater shutdown operation, wherein the power supply to heater 336 is cut off or disabled, thereby ending the current smoking, but otherwise remaining ready for smoking; or

[0175] (iii) Smoking cessation operation, wherein the smoking subsystem is disabled (e.g., by disabling all power to heater 336) to prevent smoking before corrective action (e.g., replacement of non-nicotine pod assembly) is taken.

[0176] As described above, the automatic shutdown control system 2300 includes a depletion detection subsystem 2610 (also referred to as a depletion detection subsystem module, circuit, or loop). Through the depletion detection subsystem 2610, the controller 2105 monitors the humidity (or depletion) of the coil 338 to detect the presence of a depletion smoking state at the non-nicotine electronic cigarette device 500. As described above, when a depletion smoking state is detected, the controller 2105 can shut down or disable one or more subsystems or components of the non-nicotine electronic cigarette device 500.

[0177] In at least one exemplary embodiment, the controller 2105 monitors the humidity of the absorbent core 338 based on the percentage change in the resistance of the heater 336 over time during smoking. In at least one exemplary embodiment, the controller 2105 may receive one or more signals indicative of the resistance of the heater 336 from the pod temperature measurement circuit 21250.

[0178] In another exemplary embodiment, the controller 2105 may calculate the resistance of the heater 336 based on signals from the heater current measurement circuit 21258 and / or the heater voltage measurement circuit 21252.

[0179] According to one or more exemplary embodiments, if the percentage change in resistance of heater 336 within a time window exceeds a resistance change percentage threshold, controller 2105 determines that a dry-out smoking state exists at the non-nicotine e-cigarette device 500 (e.g., the coil 338 is dry). Controller 2105 may obtain the resistance change percentage threshold from NVM 2205 in the non-nicotine pod assembly electrical system 2200. The resistance change percentage threshold may be set by the manufacturer of the non-nicotine pod assembly 300 based on empirical data, non-nicotine vapor precursor formulations, the construction of heater 336, their sub-assemblies, combinations thereof, etc. According to at least some exemplary embodiments, the resistance change percentage threshold may be between approximately 0.1% and 25.5% (in increments of approximately 0.1%). In one example, for a heater made of 316L grade stainless steel, the resistance change percentage might be approximately 2.0%.

[0180] In one example, a dry-out smoking state may exist because the non-nicotine vapor precursor formulation is not supplied to the wick 338 at a sufficient flow rate to maintain the standard temperature profile of the heater 336. Therefore, the percentage change in resistance can indicate the rate at which the non-nicotine vapor precursor formulation flows to the wick 338, and the dry-out detection subsystem 2610 can be configured to determine the presence of a dry-out smoking state based on the rate at which the non-nicotine vapor precursor formulation flows to the wick 338. Furthermore, a dry-out smoking state may be caused by the depletion of the non-nicotine vapor precursor formulation in the non-nicotine pod assembly 300. Therefore, detecting a dry-out smoking state can also indicate a depleted and / or empty non-nicotine pod assembly.

[0181] The controller 2105 can utilize a sliding measurement window of N samples of the resistance of the heater 336 to make a determination on the most recent time slice during smoking. This allows the controller 2105 to adapt to the relatively long periods of negative pressure applied by adult smokers, while also providing faster detection of depleted smoking states, where the resistance of the heater 336 begins to change relatively rapidly when negative pressure is applied.

[0182] In response to the detection of a depleted smoking state, the controller 2105 can control the thermoelectric control circuit 2127 to cut off the power supply to the heater 336 (heater off) and / or stop smoking at the non-nicotine electronic cigarette device 500 (smoking stopped).

[0183] According to at least one exemplary embodiment, a first-in-first-out (FIFO) memory storing approximately 100 samples (N=100) can be used to set a sliding measurement window of approximately 100 milliseconds (ms), wherein the resistance of heater 336 is periodically updated (e.g., recalculated) at 1ms “durations”. The FIFO memory may be located inside controller 2105 or included in... Figure 29 In the memory 2130 shown.

[0184] According to at least some exemplary embodiments, the sliding window may not begin until the resistance measurement of heater 336 becomes relatively stable; otherwise, spurious values ​​inserted into the FIFO could cause false alarms later in the process. The resistance measurement is considered relatively stable when it reaches an operating condition where the expected measurement error is less than a threshold percentage of resistance change. In one example, the resistance of heater 336 may become relatively stable once the current flowing through it exceeds a “wetting” current threshold (e.g., approximately 100 mA). Controller 2105 can determine whether the “wetting” current threshold has been reached by monitoring the current flowing through heater 336 based on a signal from heater current measurement circuit 21258.

[0185] Figure 31 This is a flowchart illustrating a depletion detection method according to an exemplary embodiment. For illustrative purposes, reference will be made to... Figure 29 Discussion of the electrical system shown Figure 31 The flowchart shown is provided. However, it should be understood that the exemplary embodiments are not limited to this example. Specifically, the exemplary embodiments are applicable to other non-nicotine electronic cigarette devices and their electrical systems. Furthermore, the operation performed by the controller 2105 will be described with reference to the following description. Figure 31 The exemplary embodiment shown. However, it should be understood that the automatic shutdown control system 2300 and / or the execution thereof may be referenced. Figure 31 This exemplary embodiment is described by one or more of the functions / operations shown in the diagram, namely the desiccation detection subsystem 2610.

[0186] Reference Figure 31 When the non-nicotine pod assembly 300 is inserted into the device body 100 and the non-nicotine electronic cigarette device 500 is powered on, at step S2702, the controller 2105 obtains the percentage threshold of resistance change (also known as the percentage resistance change parameter) Δ%R_THRESHOLD stored in the NVM2205 of the non-nicotine pod assembly electrical system 2200.

[0187] At step S2704, the controller 2105 determines whether a smoking state exists at the non-nicotine electronic cigarette device 500. According to at least one exemplary embodiment, the controller 2105 can determine whether a smoking state exists at the non-nicotine electronic cigarette device 500 based on the output from the sensor 364. In one example, if the output from the sensor 364 indicates that a negative pressure above a threshold is applied at the mouthpiece 102 of the non-nicotine electronic cigarette device 500, the controller 2105 can determine that a smoking state exists at the non-nicotine electronic cigarette device 500.

[0188] If the controller 2105 detects a smoking state at step S2704, then at step S2705, the controller 2105 controls the heat engine control circuit 2127 to supply power to the heater 336 for smoking. An example of controlling the heat engine control circuit 2127 to supply power to the heater 336 will be referred to later. Figure 38 and 39 Let's discuss this in more detail.

[0189] At step S2706, the controller 2105 determines whether the resistance of the heater 336 has stabilized. As described above, once the current through the heater 336 reaches the "wetting" current threshold (e.g., approximately 100 mA), the controller 2105 can determine that the resistance of the heater 336 has stabilized. The controller 2105 can determine whether the current through the heater 336 has reached the "wetting" current threshold based on the output signal from the heater current measurement circuit 21258.

[0190] If the controller 2105 determines in step S2706 that the resistance of the heater 336 has stabilized, the controller 2105 begins to store the measured resistance value of the heater 336 in the FIFO memory at 1ms intervals (with a "duration" of 1ms).

[0191] At step S2710, controller 2105 determines whether the FIFO memory is full (e.g., a critical number of samples have been collected). In one example, the FIFO memory may be full when approximately 100 samples of the heater 336 resistor have been stored (e.g., approximately 100 ms after determining in step S2706 that the resistance of heater 336 has stabilized).

[0192] If the controller 2105 determines that the FIFO memory is full, then at step S2712, the controller 2105 calculates the first resistance value R stored in the FIFO memory. t_0 (at time t0) and the last (most recent) resistance value R t_N-1 (at time t) N-1 The percentage change in resistance between Δ%R and 0.

[0193] At step S2714, the controller 2105 compares the calculated percentage of resistance change Δ%R with the percentage of resistance change threshold Δ%R_THRESHOLD obtained from NVM 2205 at step S2702.

[0194] If the calculated percentage change in resistance Δ%R is greater than the resistance change percentage threshold Δ%R_THRESHOLD, then at step S2716, the controller 2105 controls the heat engine control circuit 2127 to shut down the heater 336 (e.g., cut off its power). In one example, the controller 2105 may control the heat engine control circuit 2127 to perform a smoking cessation operation. As described above, the smoking cessation operation can disable all power to the heater 336, thereby preventing smoking until a corrective action is taken (e.g., by an adult smoker). As discussed in more detail later, the controller 2105 can achieve this by outputting a smoking cessation signal COIL_SHDN with a logic high level. Figure 38 Or by disabling the smoke enable signal COIL_VGATE_PWM (or stopping the output). Figure 39 The heat engine control circuit 2127 is used to disable all energy from the heater 336. In at least one example, the smoke enable signal COIL_VGATE_PWM can be a pulse width modulation (PWM) signal. Exemplary corrective actions will be discussed in more detail later.

[0195] Returning to step S2714, if the calculated percentage change in resistance Δ%R is less than or equal to the percentage change in resistance threshold Δ%R_THRESHOLD, the process returns to S2708 and continues as described above.

[0196] Returning to step S2710, if the controller 2105 determines that the FIFO memory is not yet full, the process returns to step S2708 and continues as described above.

[0197] Returning to step S2706, if the controller 2105 determines that the resistance of the heater 336 has not yet stabilized, the controller 2105 continues to monitor the resistance of the heater 336. Once the resistance of the heater 336 has stabilized, the process proceeds to step S2708 and continues as described above.

[0198] Returning to step S2704, if the controller 2105 determines that the smoking state does not yet exist, the controller 2105 continues to monitor the output of the smoking state sensor 364. Once the smoking state is detected, the process continues as described above.

[0199] Figure 32The graphs show the relationship between resistance and time when there is a depleted smoking state at the start of smoking ("depleted smoking"), when there is a depleted smoking state during smoking ("dry smoking"), and when there is no depleted smoking state ("normal smoking").

[0200] like Figure 32 As shown, when a depleted smoking state exists at the start of smoking, the resistance increases sharply over time. In this example, the controller 2105 can shut off the smoking function of the non-nicotine electronic cigarette device 500 at the end of the initial sampling interval (e.g., approximately 100 ms) because the percentage change in resistance Δ%R of the heater 336 at the end of the initial time interval is greater than the resistance change percentage threshold Δ%R_THRESHOLD.

[0201] When the depletion of the smoking state begins during smoking, the heater resistance starts to increase more sharply (the slope of the curve increases). In this case, when the percentage change in resistance Δ%R of heater 336 between the earliest and most recent heater resistances in the FIFO exceeds the resistance change percentage threshold Δ%R_THRESHOLD, the controller 2105 at time t SHUTOFF Turn off the smoking function.

[0202] When there is no exhaustion of smoke (normal smoking exists), the smoking ends and the power supply to heater 336 is cut off in response to stopping the application of negative pressure or after the critical time interval expires. In this case, a heater shutdown operation can be performed instead of a smoking stop operation.

[0203] As described above, the dry-out smoking state is an example of a hard-shell malfunction event of the non-nicotine electronic cigarette device 500.

[0204] Figure 33 This is a flowchart illustrating an exemplary method of operation of a non-nicotine electronic cigarette device after shutting down the smoking function in response to detecting a hard fault pod event such as a smoke-out state, according to an exemplary embodiment. For illustrative purposes, the smoke-out state will be discussed with reference to it. Figure 33 The exemplary embodiments shown are shown. However, the exemplary embodiments should not be limited to this example.

[0205] Also for illustrative purposes, the reference will be... Figure 29 Discussion of the electrical system shown Figure 33 The flowchart shown is provided. However, it should be understood that the exemplary embodiments are not limited to this example. Specifically, the exemplary embodiments are applicable to other non-nicotine electronic cigarette devices and their electrical systems. Furthermore, the operation performed by the controller 2105 will be described with reference to the following description. Figure 33 The exemplary embodiment shown. However, it should be understood that the automatic shutdown control system 2300 and / or the execution thereof may be referenced. Figure 33The exemplary embodiment is similarly described for one or more of the functions / operations shown in the diagram, including the desiccation detection subsystem 2610.

[0206] Reference Figure 33 At step S3804, controller 2105 records the occurrence of the exhausted smoking state in memory 2130. In one example, controller 2105 may store the identifier of an event (exhausted smoking state or exhausted smoking event) associated with a subsequent action (e.g., smoking cessation operation) as well as the time when the event and the subsequent action occurred.

[0207] At step S3806, controller 2105 controls the smoking indicator 2135 to output an indication that a depleted smoking state has been detected. In one example, this indication may take the form of sound, a visual display, and / or tactile feedback to the adult smoker. For example, the indication may be a flashing red LED, a software message containing an error code sent (e.g., via Bluetooth) to an "App" connected to a remote electronic device, any combination thereof, etc., which may subsequently trigger a notification in the App providing the adult smoker with information about corrective actions.

[0208] At step S3808, the controller 2105 determines whether the non-nicotine pod assembly 300 has been removed from the device body 100 within a removal time interval threshold (before expiration) after instructing the adult smoker to be in a state of depletion of smoking (e.g., in response to). In at least one exemplary embodiment, the controller 2105 may digitally determine whether the non-nicotine pod assembly 300 has been removed from the device body 100 by checking whether a set of five contacts 326 of the non-nicotine pod assembly has been removed. In another example, the controller 2105 may determine whether the non-nicotine pod assembly has been removed from the device body 100 by sensing whether the electrical contacts 324a, 324b and / or 326 of the non-nicotine pod assembly 300 have been disconnected from the device electrical connector 132 of the device body 100. In at least one example, the controller 2105 can sense that the electrical contacts 324a, 324b and / or 326 of the non-nicotine pod assembly 300 have been disconnected from the device electrical connector 132 of the device body 100 by detecting the infinite resistance between the electrical contacts 324a, 324b and / or 326 of the non-nicotine pod assembly 300 and the device electrical connector 132 of the device body 100.

[0209] If the controller 2105 determines that the non-nicotine pod assembly 300 has been removed from the device body 100 within a removal time interval threshold after instructing the adult smoker to a state of depletion of smoking (e.g., in response to), then at step S3814, the controller 2105 controls the non-nicotine electronic cigarette device 500 to resume normal operation (non-fault state). In this case, although the supply of energy to the heater 336 is still disabled because the non-nicotine pod assembly 300 has been removed, the non-nicotine electronic cigarette device 500 is ready to smoke in response to the adult smoker applying negative pressure once a new non-nicotine pod assembly is inserted.

[0210] At step S3812, the controller 2105 determines whether a new non-nicotine pod assembly has been inserted into the device body 100 within the insertion time interval threshold (before its expiration) following the removal of the non-nicotine pod assembly 300, and at step S3814, the non-nicotine electronic cigarette device 500 returns to normal operation. In at least one example, the length of the insertion time interval threshold can be between approximately 5 minutes and approximately 120 minutes. Adult smokers can set the insertion time interval threshold to a length within this range. In at least one exemplary embodiment, the controller 2105 can determine whether a new non-nicotine pod assembly has been inserted into the device body 100 by sensing the resistance (e.g., between approximately 0.5 ohms and approximately 5.0 ohms) of the heater 336 between the electrical contacts 324a and 324b of the non-nicotine pod assembly 300 and the device electrical connector 132 of the device body 100. In yet another exemplary embodiment, the controller 2105 can determine whether a new non-nicotine pod assembly has been inserted into the device body 100 by sensing whether a pull-up resistor contained in the non-nicotine pod assembly 300 is present between the electrical contacts 326 of the non-nicotine pod assembly 300 and the device electrical connector 132 of the device body 100.

[0211] If controller 2105 determines that a new non-nicotine pod component has been inserted into device body 100 within the insertion time interval threshold, then at step S3810, controller 2105 controls the heat engine control circuit 2127 to re-enable the smoking module (e.g., to enable power supply to heater 336). As discussed in more detail later, controller 2105 can achieve this by outputting a smoking off signal COIL_SHDN with a logic low level. Figure 38 ) and / or enable the smoking signal COIL_VGATE_PWM( Figure 39 The function takes effect to control the heat engine control circuit 2127 to reactivate the smoking module.

[0212] Returning to step S3812, if the controller 2105 determines that no new non-nicotine pod component has been inserted into the device body 100 within the insertion time interval threshold, then at step S3816, the controller 2105 outputs one or more additional control signals to perform an automatic shutdown operation, wherein the non-nicotine electronic cigarette device 500 is powered off or enters a low-power mode. According to at least some exemplary embodiments, in the case of normal software automatic shutdown, the controller 2105 may output a large number or multiple GPIO control lines (signals) to shut down all or substantially all peripheral devices of the non-nicotine electronic cigarette device 500 and put the controller 2105 into a sleep state.

[0213] Now returning to step S3808, if the non-nicotine pod component 300 is not removed within the removal time interval threshold, the process proceeds to step S3816 and continues as described above.

[0214] Figure 34 An exemplary embodiment of the heater voltage measurement circuit 21252 is shown.

[0215] Reference Figure 34 The heater voltage measurement circuit 21252 includes resistors 3702 and 3704, which are connected in a voltage divider configuration between the terminal receiving the input voltage signal COIL_OUT and ground. The input voltage signal COIL_OUT is the voltage input to the heater 336 (the voltage at its input terminal). Node N3716 between resistors 3702 and 3704 is coupled to the positive input terminal of operational amplifier (Op-Amp) 3708. Capacitor 3706 is connected between node N3716 and ground to form a low-pass filter circuit (R / C filter) to stabilize the voltage input to the positive input terminal of operational amplifier 3708. The filter circuit also reduces inaccuracies caused by switching noise from the PWM signal used to drive the heater 336 and has the same phase response / group delay for both current and voltage.

[0216] The heater voltage measurement circuit 21252 also includes resistors 3710 and 3712 and capacitor 3714. Resistor 3712 is connected between node N3718 and a terminal configured to receive the output voltage signal COIL_RTN. The output voltage signal COIL_RTN is the voltage output from heater 336 (the voltage at its output terminal).

[0217] Resistor 3710 and capacitor 3714 are connected in parallel between node N3718 and the output of Op-Amp3708. The negative input of Op-Amp3708 is also connected to node N3718. Resistors 3710 and 3712 and capacitor 3714 are connected in a low-pass filter circuit configuration.

[0218] The heater voltage measurement circuit 21252 uses an Op-Amp3708 to measure the voltage difference between the input voltage signal COIL_OUT and the output voltage signal COIL_RTN, and outputs a scaled heater voltage measurement signal COIL_VOL representing the voltage across the heater 336. The heater voltage measurement circuit 21252 outputs the scaled heater voltage measurement signal COIL_VOL to the ADC pin of the controller 2105 for digital sampling and measurement.

[0219] The gain of the Op-Amp3708 can be set based on surrounding passive electrical components (e.g., resistors and capacitors) to improve the dynamic range of voltage measurements. In one example, the dynamic range of the Op-Amp3708 can be achieved by scaling the voltage so that the maximum voltage output matches the maximum input range of the ADC (e.g., approximately 1.8V). In at least one exemplary embodiment, the scaling can be approximately 267mV / V, so the heater voltage measurement circuit 21252 can measure voltages up to approximately 1.8V / 0.267V = 6.74V.

[0220] Figure 35 It shows Figure 29 An exemplary embodiment of the heater current measurement circuit 21258 shown is illustrated.

[0221] Reference Figure 35 The output voltage signal COIL_RTN is input to a grounded four-terminal (4T) measuring resistor 3802. The differential voltage across the four-terminal measuring resistor 3802 is scaled by an Op-Amp 3806, which outputs a heater current measurement signal COIL_CUR indicating the current flowing through the heater 336. The heater current measurement signal COIL_CUR is output to the heater's ADC pin, allowing the controller 2105 to digitally sample and measure the current flowing through the heater 336.

[0222] exist Figure 35 In the exemplary embodiment shown, the four-terminal measuring resistor 3802 can be used to reduce errors in current measurements using the "Kelvin current measurement" technique. In this example, separating the current measurement path from the voltage measurement path can reduce noise on the voltage measurement path.

[0223] The gain of the Op-Amp3806 can be set to improve the dynamic range of the measurement. In this example, the scaling of the Op-Amp3806 can be approximately 0.577 V / A, therefore, the heater current measurement circuit 21258 can measure approximately...

[0224] For more details, please refer to Figure 35 The first terminal of the four-terminal measuring resistor 3802 is connected to the terminal of the heater 336 to receive the output voltage signal COIL_RTN. The second terminal of the four-terminal measuring resistor 3802 is grounded. The third terminal of the four-terminal measuring resistor 3802 is connected to a low-pass filter circuit (R / C filter) comprising resistor 3804, capacitor 3808, and resistor 3810. The output of the low-pass filter circuit is connected to the positive input of the Op-Amp3806. The low-pass filter circuit reduces inaccuracies caused by switching noise from the PWM signal applied to power the heater 336 and provides the same phase response / group delay for both current and voltage.

[0225] The heater current measurement circuit 21258 also includes resistors 3812 and 3814 and capacitor 3816. Resistors 3812 and 3814 and capacitor 3816 are connected in a low-pass filter circuit configuration to the fourth terminal of the four-terminal measuring resistor 3802, the negative input terminal of the Op-Amp3806, and the output terminal of the Op-Amp3806, wherein the output terminal of the low-pass filter circuit is connected to the negative input terminal of the Op-Amp3806.

[0226] The Op-Amp3806 outputs the differential voltage as the heater current measurement signal COIL_CUR to the ADC pin of the controller 2105, so that the controller 2105 can sample and measure the current passing through the heater 336.

[0227] At least according to this exemplary embodiment, the configuration of the heater current measuring circuit 21258 is similar to that of the heater voltage measuring circuit 21252, except that a low-pass filter circuit including resistors 3804 and 3810 and capacitor 3808 is connected to one terminal of the four-terminal measuring resistor 3802 and a low-pass filter circuit including resistors 3812 and 3814 and capacitor 3816 is connected to the other terminal of the four-terminal measuring resistor 3802.

[0228] The controller 2105 can average multiple samples (e.g., voltage samples) within a time window (e.g., approximately 1 ms) corresponding to the “duration” used in the non-nicotine electronic cigarette device 500, and convert the average value into a mathematical representation of the voltage and current across the heater 336 by applying a scaling value. The scaling value can be determined based on a gain setting implemented at the corresponding Op-Amp, which may be hardware-specific to the non-nicotine electronic cigarette device 500.

[0229] The controller 2105 can use, for example, a third-order moving average filter to filter the converted voltage and current measurements to attenuate measurement noise. The controller 2105 can then use the filtered measurements to calculate: the resistance R of the heater 336. HE power The (P) applied to heater 336 HEATER =V HEATER *I HEATER ), power flow etc., among which Efficiency is the power P delivered to heater 336 under all operating conditions. in The ratio. In one example, efficiency could be at least 85%.

[0230] According to one or more exemplary embodiments, adjustments can be made. Figure 34 The gain settings of the passive components of the circuit shown in 35 and / or 35 are configured to match the output signal range with the input range of the controller 2105.

[0231] Figure 36 and 37 A pod temperature measurement circuit according to an exemplary embodiment is shown.

[0232] Reference Figure 36 The pod temperature measurement circuit 21250A includes a driver stage 3902A and a measurement stage 3904A. The driver stage 3902A is configured to generate a pod temperature measurement power signal HW_POWER in response to a pod temperature measurement control signal HW_ENB to deliver power to the pod sensor 2220. The pod temperature measurement power signal HW_POWER may be a PWM signal. The measurement stage 3904A is configured to generate a pod temperature measurement output signal HW_SIGNAL based on a DAC comparison signal HW_DAC from a DAC (not shown) at controller 2105 and a pod sensor signal SP_HW from the pod sensor 2220. The pod temperature measurement output signal HW_SIGNAL may be a differential voltage signal indicating the temperature of one or more elements of the non-nicotine pod assembly 300. The inputs and outputs of an exemplary embodiment of the pod sensor 2220 will be discussed in more detail later.

[0233] For more detailed information, please refer to [link / reference]. Figure 36The driver stage 3902A receives the pod temperature measurement control signal HW_ENB from the controller 2105. In this example, the pod temperature measurement control signal HW_ENB can be a PWM signal with a duty cycle that is adjusted by the controller 2105 to change the power based on the pod sensor signal SP_HW from the pod sensor 2220. When the pod temperature measurement control signal HW_ENB is active (valid), the driver stage 3902A can be enabled and output the pod temperature measurement power signal HW_POWER; otherwise, the output of the driver stage 3902A can be disabled.

[0234] The pod temperature measurement control signal HW_ENB is input to the enable pin EN of the low dropout regulator (LDO) U10, which converts the pod temperature measurement control signal HW_ENB, which is a low current drive strength processor signal, into the pod temperature measurement power signal HW_POWER, which is a high current drive strength PWM signal.

[0235] Resistor R80 is connected as a pull-down resistor between the enable pin EN of LDO U10 and ground to ensure that the output of driver stage 3902A is disabled if the pod temperature measurement control signal HW_ENB is in an indeterminate state.

[0236] The driver stage 3902A also includes capacitors C43 and C44. Capacitor C44 is connected to the input pin IN of the LDO U10 and the voltage source to provide non-nicotine energy storage and filtering, which can improve the speed at which the capsule temperature measurement power signal HW_POWER reaches the turn-on voltage. Capacitor C43 is connected between the output pin and ground to provide non-nicotine filtering and energy storage for the capsule temperature measurement power signal HW_POWER.

[0237] Resistors R60 and R61 form a feedback network 39028 in the form of a voltage divider circuit. Feedback network 39028 inputs a feedback voltage to the adjustment or feedback terminal ADJ of LDO U10. LDO U10 sets the precise voltage output of the pod temperature measurement power signal HW_POWER based on the feedback voltage input to the feedback terminal ADJ. According to at least some exemplary embodiments, the precise voltage output of the pod temperature measurement power signal HW_POWER is related to the feedback voltage V. ADJ The relationship between the outputs is determined by Given. In this example, the resistances of resistors R60 and R61 are known, and based on the type of LDO U10, the voltage V... ADJ This is also known.

[0238] In measurement phase 3904A, the sensor signal SP_HW from sensor 2220 is input to the negative input of the op-Amp U11A via resistor R66 to scale the voltage of the sensor signal SP_HW for measurement by the ADC at controller 2105. Op-Amp U11A is an inverting amplifier, and its gain is set based on the resistances of resistors R66 and R67, which are connected between the negative input and output of Op-Amp U11A. Capacitor C47 is connected in parallel with resistor R67 to form a low-pass filter circuit to filter out high-frequency noise in the sensor signal SP_HW.

[0239] The DAC comparator signal HW_DAC from the DAC at controller 2105 is input to the positive input of the Op-Amp U11A via a voltage divider circuit 39042 including resistors R63 and R64. The DAC comparator signal HW_DAC sets a reference voltage level for the Op-Amp U11A, enabling the Op-Amp U11A to operate, select the differential voltage applied to the Op-Amp U11A, and suppress or prevent Op-Amp U11A saturation. In other words, the DAC comparator signal HW_DAC sets the operating point for the Op-Amp U11A to suppress saturation of the capsule temperature measurement output signal HW_SIGNAL from the Op-Amp U11A. The voltage divider circuit 39042 reduces the voltage step of each DAC to provide more precise control over the range setting. The ratio of resistors R63 and R64 can approximate the balance between the resistor and the capsule sensor 2220 (e.g., at its maximum temperature). Capacitor C46 and resistor R64 are connected in parallel to form a low-pass filter circuit to filter out noise in the DAC comparator signal HW_DAC. Resistor R69 is connected between the output of voltage divider circuit 39042 and the positive input of Op-Amp U11A.

[0240] The pod sensor signal SP_HW from pod sensor 2220 may have a relatively small voltage level (e.g., approximately 2mV). Therefore, the relatively high gain of the Op-Amp U11A can be used to match the pod temperature measurement signal HW_SIGNAL with the dynamic signal range of the ADC at controller 2105 (e.g., approximately 1.8V). Accordingly, the Op-Amp U11A amplifies the pod sensor signal SP_HW and outputs the amplified signal as the pod temperature measurement output signal HW_SIGNAL to the ADC for sampling and measurement by controller 2105.

[0241] Reference Figure 37 The pod temperature measurement circuit 21250B includes a driver stage 3902B and a measurement stage 3904B. Figure 37In the exemplary embodiment shown, the driver stage 3902B and the measurement stage 3904B are respectively similar to Figure 36 The driver stage 3902A and measurement stage 3904A shown differ in that the driver stage 3902B also includes a measurement balancing resistor R93, and the capacitance value of capacitor C43 can be reduced to increase the rise / fall time of the pod sensor signal SP_HW. In at least one example, the measurement balancing resistor R93 can have a resistance of approximately 3 ohms and can be moved from the non-nicotine pod component electrical system 2200 to the device body component electrical system 2100 to reduce the cost 300 of the non-nicotine pod component. Additionally, at least in... Figure 37 In the exemplary embodiment shown, passive components can be arranged and adjusted to configure gain settings such that the output signal range matches the input signal range of the controller 2105.

[0242] Figure 38 This is a circuit diagram showing a heat engine control circuit according to some exemplary embodiments. Figure 38 The heat engine control circuit shown is Figure 29 An example of the heat engine control circuit 2127 shown.

[0243] Reference Figure 38 The thermodynamic control circuit 2127A includes a CMOS charge pump U2 configured to supply a power rail (e.g., approximately 7V power rail (7V_CP)) to one or more gate driver integrated circuits (ICs) to control a power FET (heater power control circuit, also known as a thermodynamic drive loop or circuit) that provides energy to the heater 336 in the non-nicotine capsule assembly 300. Figure 38 (Not shown in the image).

[0244] In exemplary operation, charge pump U2 is controlled (selectively enabled or disabled) based on the smoke-off signal COIL_SHDN (device power status signal; also known as smoke-enable signal) from controller 2105. Figure 38 In the example shown, charge pump U2 is enabled in response to the output of the smoke-off signal COIL_SHDN with a logic low level, and disabled in response to the output of the smoke-off signal COIL_SHDN with a logic high level. Once the power rail 7V_CP stabilizes after charge pump U2 is enabled (e.g., after the stabilization time interval has elapsed), controller 2105 can enable the heater activation signal GATE_ON to power the heater power control circuitry and heater 336.

[0245] According to at least one exemplary embodiment, the controller 2105 can perform a smoking cessation operation by outputting (enabling) a smoking cessation signal COIL_SHDN with a logic high level to stop all power supply to the heater 336 until the smoking cessation signal COIL_SHDN is disabled by the controller 2105 (converted to a logic low level).

[0246] The controller 2105 can output a heater activation signal GATE_ON (another device power status signal) with a logic high level in response to detecting the presence of a smoking state in the non-nicotine electronic cigarette device 500. In this exemplary embodiment, transistors (e.g., field-effect transistors (FETs)) Q5 and Q7A' are activated when the controller 2105 sets the heater activation signal GATE_ON to a logic high level. The controller 2105 can also output a heater activation signal GATE_ON with a logic low level to stop power supply to the heater 336, thereby performing a heater shutdown operation.

[0247] If a power stage fault occurs, where transistors Q5 and Q7A' do not respond to the heater activation signal GATE_ON, controller 2105 can perform a smoke stop operation by outputting a smoke off signal COIL_SHDN with a logic high level to cut off the power supply to the gate driver (which in turn cuts off the power supply to heater 336).

[0248] In another example, if the controller 2105 fails to start properly, resulting in an indeterminate state for the smoke-off signal COIL_SHDN, the heat engine control circuit 2127A automatically pulls the smoke-off signal COIL_SHDN to a logic high level to automatically cut off the power supply to the heater 336.

[0249] For more detailed information, please refer to [link / reference]. Figure 38 Capacitor C9, charge pump U2, and capacitor C10 are connected in a positive voltage doubler configuration. Capacitor C9 is connected between pins C- and C+ of charge pump U2 and serves as the non-nicotine energy storage for charge pump U2. The input voltage pin VIN of charge pump U2 is connected to the voltage source BATT at node N3801, while capacitor C10 is connected at node N3802 between ground and the output voltage pin VOUT of charge pump U2. Capacitor C10 provides filtering and non-nicotine energy storage for the output of charge pump U2, ensuring a more stable voltage output from charge pump U2.

[0250] Capacitor C11 is connected between node N3801 and ground to provide filtering and energy storage for the input voltage of charge pump U2.

[0251] Resistor R10 is connected between the positive voltage source and the power-off pin SHDN. Resistor R10 acts as a pull-up resistor to ensure that the input of the power-off pin SHDN is high, thereby disabling the output (VOUT) of charge pump U2 and cutting off the power supply to heater 336 when the smoke-off signal COIL_SHDN is in an indeterminate state.

[0252] Resistor R43 is connected at node N3804 between ground and the gate of transistor Q7A'. Resistor R43 acts as a pull-down resistor to ensure that transistor Q7A' is in a high-impedance (OFF) state, thereby disabling the power rail 7V_CP and cutting off the power supply to heater 336 when the heater activation signal GATE_ON is in an indeterminate state.

[0253] Resistor R41 is connected between nodes N3802 and N3803, between the gate of transistor Q5 and the drain of transistor Q7A'. Resistor R41 acts as a pull-down resistor to ensure that transistor Q5 is turned off more reliably.

[0254] Transistor Q5 is configured to selectively isolate the power rail 7V_CP from the VOUT pin of charge pump U2. The gate of transistor Q5 is connected to node N3803, the drain of transistor Q5 is connected to the output voltage terminal VOUT of charge pump U2 at node N3802, and the source of transistor Q5 serves as the output terminal of the power rail 7V_CP. This configuration allows capacitor C10 to reach its operating voltage more quickly through the isolated load and creates fail-safe (fault protection) when both the smoke-off signal COIL_SHDN and the heater activation signal GATE_ON must be in the correct state to power heater 336.

[0255] Transistor Q7A is configured to control the operation of transistor Q5 based on the heater activation signal GATE_ON. For example, when the heater activation signal GATE_ON is at a logic high level (e.g., above ~2V), transistor Q7A is in its low-impedance (ON) state, which pulls the gate of transistor Q5 to ground, causing transistor Q5 to transition to a low-impedance (ON) state. In this case, the thermodynamic control circuit 2127A outputs the 7V_CP power rail to the thermodynamic drive circuit (not shown), thereby powering the heater 336.

[0256] If the heater activation signal GATE_ON is at a logic low level, transistor Q7A transitions to a high-impedance (OFF) state, which causes the gate of transistor Q5 to discharge through resistor R41, thus causing transistor Q5 to transition to a high-impedance (OFF) state. In this case, the power rail 7V_CP is not output and the power supply to the thermodynamic drive circuit (and heater 336) is cut off.

[0257] exist Figure 38 In the example shown, since transistor Q5 requires a gate voltage as high as its source voltage (~7V) to be in a high-impedance (OFF) state, controller 2105 does not directly control transistor Q5. Transistor Q7A provides a mechanism for controlling transistor Q5 based on a lower voltage from controller 2105.

[0258] Figure 39 This is a circuit diagram illustrating another heat engine control circuit according to an exemplary embodiment. Figure 39 The heat engine control circuit shown is Figure 29 Another example of the heat engine control circuit 2127 shown.

[0259] Reference Figure 39 The heat engine control circuit 2127B includes a rail converter circuit 39020 (also known as a boost converter circuit) and a gate driver circuit 39040. The rail converter circuit 39020 is configured to output a voltage signal 9V_GATE (also known as a power signal or input voltage signal) to power the gate driver circuit 39040 based on a smoke enable signal COIL_VGATE_PWM (also known as a smoke off signal). The rail converter circuit 39020 can be software-defined, where the smoke enable signal COIL_VGATE_PWM is used to regulate the 9V_GATE output.

[0260] The gate driver circuit 39040 uses the input voltage signal 9V_GATE from the rail converter circuit 39020 to drive the thermodynamic drive circuit 3906.

[0261] exist Figure 39 In the exemplary embodiment shown, the rail converter circuit 39020 generates the input voltage signal 9V_GATE only when the smoke enable signal COIL_VGATE_PWM is active (present). The controller 2105 can disable the 9V rail to cut off power to the gate driver circuit 39040 by deactivating (stopping or terminating) the smoke enable signal COIL_VGATE_PWM. Similar to... Figure 38 The smoking off signal COIL_SHDN and the smoking enable signal COIL_VGATE_PWM in the illustrated exemplary embodiment can be used as device status power signals for performing the smoking stop operation of the non-nicotine electronic cigarette device 500. In this example, the controller 2105 can perform the smoking stop operation by disabling the smoking enable signal COIL_VGATE_PWM, thereby disabling all power to the gate driver circuit 39040, the thermodynamic drive circuit 3906, and the heater 336. The controller 2105 can then enable smoking at the non-nicotine electronic cigarette device 500 by re-enabling the smoking enable signal COIL_VGATE_PWM.

[0262] Similar to Figure 38 The controller 2105 can output a first heater enable signal GATE_ENB with a logic high level in response to detecting a smoking state at the non-nicotine electronic cigarette device 500, thereby supplying power to the heat engine drive circuit 3906 and the heater 336. The controller 2105 can also output a first heater enable signal GATE_ENB with a logic low level to stop supplying power to the heat engine drive circuit 3906 and the heater 336, thus performing a heater shutdown operation.

[0263] For more detailed information, please refer to [link / reference]. Figure 39 In the rail-to-rail converter circuit 39020, capacitor C36 is connected between the voltage source BATT and ground. Capacitor C36 serves as a non-nicotine energy storage for the rail-to-rail converter circuit 39020.

[0264] The first terminal of inductor L1006 is connected to node Node1, located between voltage source BATT and capacitor C36. Inductor L1006 serves as the main energy storage element of the rail-to-rail converter circuit 39020.

[0265] The second terminal of inductor L1006, the drain of transistor (e.g., enhancement-mode MOSFET) Q1009, and the first terminal of capacitor C1056 are connected at node Node2. The source of transistor Q1009 is grounded, and the gate of transistor Q1009 is configured to receive the smoke enable signal COIL_VGATE_PWM from controller 2105.

[0266] exist Figure 39 In the example shown, transistor Q1009 is used as the main switching element of the rail converter circuit 39020.

[0267] Resistor R29 is connected between the gate of transistor Q1009 and ground as a pull-down resistor to ensure that transistor Q1009 is turned off more reliably and to prevent heater 336 from operating when the smoke enable signal COIL_VGATE_PWM is in an indeterminate state.

[0268] The second terminal of capacitor C1056 is connected at node Node3 to the cathode of Zener diode D1012 and the anode of Zener diode D1013. The anode of Zener diode D1012 is grounded.

[0269] The cathode of Zener diode D1013 is connected at node 4 to one terminal of capacitor C35 and the input of a voltage divider circuit including resistors R1087 and R1088. The other terminal of capacitor C35 is grounded. The voltage at node 4 is also the output voltage 9V_GATE from the rail-to-rail converter circuit 39020.

[0270] Resistor R1089 is connected to the output of the voltage divider circuit at node 5.

[0271] In the exemplary operation, when the smoke enable signal COIL_VGATE_PWM is active and at a logic high level, transistor Q1009 switches to a low-impedance state (ON), allowing current to flow from the voltage source BATT and capacitor C36 through inductor L1006 and transistor Q1009 to ground. This stores energy in inductor L1006, with the current increasing linearly over time.

[0272] When the smoke enable signal COIL_VGATE_PWM is at a logic low level, transistor Q1009 switches to a high-impedance state (OFF). In this state, inductor L1006 continues to flow current (linearly decaying), and the voltage at node Node2 rises.

[0273] The duty cycle of the smoke enable signal COIL_VGATE_PWM determines the voltage rise for a given load. Therefore, the smoke enable signal COIL_VGATE_PWM is controlled by the controller 2105 in a closed loop using the feedback signal COIL_VGATE_FB, which is output as feedback by a voltage divider circuit at node Node 5. The aforementioned switching occurs at a relatively high rate (e.g., approximately 2 MHz, but different frequencies can be used depending on the required parameters and component values).

[0274] Still refer to Figure 39 In the rail-to-rail converter circuit 39020, capacitor C1056 is an AC-coupled capacitor that provides DC blocking to remove DC levels. When the smoking enable signal COIL_VGATE_PWM is low to conserve battery life (e.g., when the non-nicotine e-cigarette device 500 is in standby mode), capacitor C1056 prevents current from flowing from the voltage source BATT through inductor L1006 and diode D1013 to the gate driver circuit 39040. The capacitance of capacitor C1056 can be selected to provide a relatively low impedance path at switching frequencies.

[0275] Zener diode D1012 establishes the ground level for the switching signal. Since capacitor C1056 removes the DC level, the voltage at node Node3 can normally be bipolar. In one example, Zener diode D1012 can clamp the negative half-cycle of the signal to approximately 0.3V below ground.

[0276] Capacitor C35 serves as the output non-nicotine energy storage for the rail-to-rail converter circuit 39020. When transistor Q1009 is turned on, Zener diode D1013 prevents current from flowing from capacitor C35 through capacitor C1056 and transistor Q1009.

[0277] When the decaying current of inductor L1006 causes a voltage rise at node 4 between Zener diode D1013 and capacitor C35, current flows into capacitor C35. Capacitor C35 maintains a 9V_GATE voltage, while energy is stored in inductor L1006.

[0278] A voltage divider circuit, including resistors R1087 and R1088, reduces the voltage to an acceptable level for measurement at the ADC of controller 2105. This reduced voltage signal is output as a feedback signal COIL_VGATE_FB.

[0279] exist Figure 39 In the circuit shown, the feedback signal COIL_VGATE_FB voltage is scaled by a factor of approximately 0.25, so the 9V output voltage is reduced to approximately 2.25V to be input to the ADC of controller 2105.

[0280] Resistor R1089 provides current limiting for overvoltage faults at the output of rail converter circuit 39020 (e.g., node 4) to protect the ADC of controller 2105.

[0281] The 9V output voltage signal 9V_GATE is output from the rail converter circuit 39020 to the gate driver circuit 39040 to power the gate driver circuit 39040.

[0282] Referring now in more detail to gate driver circuitry 39040, gate driver circuitry 39040 particularly includes an integrated gate driver U2003 configured to convert a low-current signal from controller 2105 into a high-current signal to control the switching of a transistor (e.g., MOSFET) in thermodynamic drive circuitry 3906. Integrated gate driver U2003 is also configured to convert voltage levels from controller 2105 to the voltage levels required by the transistors in thermodynamic drive circuitry 3906. Figure 39 In the exemplary embodiment shown, the integrated gate driver U2003 is a half-bridge driver. However, the exemplary embodiment should not be limited to this example.

[0283] More specifically, the 9V output voltage from the rail converter circuit 39020 is input to the gate driver circuit 39040 through a filter circuit including resistor R2012 and capacitor C2009. The filter circuit including resistor R2012 and capacitor C2009 is connected at node 6 to the VCC pin (pin 4) of the integrated gate driver U2003 and the anode of Zener diode S2002. The second terminal of capacitor C2009 is grounded. The anode of Zener diode D2002 is connected at node 7 to the first terminal of capacitor C2007 and the boost pin BST (pin 1) of the integrated gate driver U2003. The second terminal of capacitor C2007 is connected at node 8 to the switching node pin SWN (pin 7) of the integrated gate driver U2003 and the thermodynamic drive circuit 3906 (e.g., between two MOSFETs). Figure 39 In the exemplary embodiment shown, Zener diode D2002 and capacitor C2007 form part of a bootstrap charge pump circuit connected between the input voltage pin VCC and the boost pin BST of the integrated gate driver U2003. Since capacitor C2007 is connected to the 9V input voltage signal 9V_GATE from the rail converter circuit 39020, capacitor C2007 is charged through diode D2002 to a voltage approximately equal to the voltage signal 9V_GATE.

[0284] Still refer to Figure 39 The high-side gate driver pin DRVH (pin 8), low-side gate driver pin DRVL (pin 5), and EP pin (pin 9) of the integrated gate driver U2003 are also connected to the thermodynamic drive circuit 3906.

[0285] Resistor R2013 and capacitor C2010 constitute a filter circuit, which is connected to the input pin IN (pin 2) of the integrated gate driver U2003. The filter circuit is configured to remove high-frequency noise from the second heater enable signal COIL_Z from the input to the input pin. The second heater enable signal COIL_Z can be a PWM signal from the controller 2105.

[0286] Resistor R2014 is connected to the filter circuit and input pin IN at node 9. Resistor R2014 acts as a pull-down resistor so that if the second heater enable signal COIL_Z floats (or is uncertain), the input pin IN of the integrated gate driver U2003 remains at a logic low level to prevent activation of the thermoelectric drive circuit 3906 and heater 336.

[0287] The first heater enable signal GATE_ENB from controller 2105 is input to the OD pin (pin 3) of integrated gate driver U2003. Resistor R2016 is connected to the OD pin of integrated gate driver U2003 as a pull-down resistor, so that if the first heater enable signal GATE_ENB from controller 2105 floats (or is uncertain), the OD pin of integrated gate driver U2003 remains at a logic low level to prevent activation of thermodynamic drive circuit 3906 and heater 336.

[0288] exist Figure 39 In the exemplary embodiment shown, the heat engine drive circuit 3906 includes a transistor (e.g., MOSFET) circuit comprising transistors (e.g., MOSFETs) 39062 and 39064 connected in series between the voltage source BATT and ground. The gate of transistor 39064 is connected to the low-side gate driver pin DRVL (pin 5) of the integrated gate driver U2003, the drain of transistor 39064 is connected at node Node8 to the switching node pin SWN (pin 7) of the integrated gate driver U2003, and the source of transistor 39064 is connected to ground GND.

[0289] When the low-side gate drive signal output from the low-side gate driver pin DRVL is high, transistor 39064 is in a low-impedance state (ON), thereby grounding node Node8.

[0290] As described above, since capacitor C2007 is connected to the 9V input voltage signal 9V_GATE from the rail converter circuit 39020, capacitor C2007 is charged through diode D2002 to a voltage equal to or substantially equal to the 9V input voltage signal 9V_GATE.

[0291] When the low-side gate drive signal output from the low-side gate driver pin DRVL is low, transistor 39064 switches to a high-impedance state (OFF), and the high-side gate driver pin DRVH (pin 8) is internally connected to the boost pin BST within the integrated gate driver U2003. As a result, transistor 39062 is in a low-impedance state (ON), thereby connecting the switching node SWN to the voltage source BATT to pull the switching node SWN (node ​​8) to the voltage of the voltage source BATT.

[0292] In this configuration, node 7 rises to a boost voltage V(BST) ≈ V(9V_GATE) + V(BATT), which allows the gate-source voltage of transistor 39062 to be the same as or substantially the same as the voltage of the 9V input voltage signal 9V_GATE (e.g., V(9V_GATE)), regardless of (or independent of) the voltage from voltage source BATT. As a result, switching node SWN (node ​​8) provides a high-current switching signal that can be used to generate a voltage output to heater 336 that is substantially independent of the voltage output from battery voltage source BATT.

[0293] Figure 40 and 41 It shows that it includes Figure 29 An exemplary embodiment of the temperature sensing transducer in the pod sensor 2220 shown.

[0294] Reference Figure 40 The temperature sensing transducer 3600A includes a resistor R3602 and a sensor transducer R3604. In at least one exemplary embodiment, the resistor R3602 may have a fixed resistance of approximately 3 ohms. The sensor transducer R3604 may be a resistor with a variable resistance that varies with temperature. The resistor R3602 and the sensor transducer R3604 are arranged in a voltage divider circuit such that the voltage across the sensor transducer R3604 (the voltage at measurement node N3606) can be output to the pod temperature measurement circuit 21250 for scaling, and then used to measure the temperature of the non-nicotine pod assembly 300 or one or more elements of the non-nicotine pod assembly 300.

[0295] In exemplary operation, the pod temperature measurement circuit 21250A ( Figure 36 The driver stage 3902A applies the pod temperature measurement power signal HW_POWER to the temperature sensing transducer 3600A, and the measurement stage 3904A of the pod temperature measurement circuit 21250A scales the sensed voltage of the pod sensor signal SP_HW at the measurement node N3606, and outputs the scaled voltage as the pod temperature measurement output signal HW_SIGNAL to the controller 2105. The controller 2105 can then determine the temperature of the non-nicotine pod assembly 300 or one or more elements of the non-nicotine pod assembly 300 based on the pod temperature measurement output signal HW_SIGNAL.

[0296] In at least one exemplary embodiment, the voltage of the pod temperature measurement power signal HW_POWER can be fixed, so the pod temperature measurement circuit 21250A can also calculate the current through resistors R3602 and R3604, since the resistance of resistor R3602 is known.

[0297] Reference Figure 41 The exemplary embodiment shown describes a temperature sensing transducer 3600B similar to... Figure 40 The temperature sensing transducer 3600A is used, except for the following: as mentioned above. Figure 37 As mentioned above, resistor R3602 is omitted from temperature sensing transducer 3600B and rearranged to... Figure 37 The driver stage 3902B of the pod temperature measurement circuit 21250B is located in the pod temperature measurement circuit 21250B. By rearranging resistor R3602 to the driver stage 3902B of the pod temperature measurement circuit 21250B, the cost of the non-nicotine pod assembly electrical system 2200 can be reduced and / or the number of pins required for the interface between the device body 100 and the non-nicotine pod assembly 30 can be reduced. Furthermore, Figure 41 The resistance of the sensor transducer R3606 in the exemplary embodiment shown can be greater than 100%. Figure 40 The resistor of the sensor transducer R3604 is reduced to decrease the current consumption of the temperature sensing transducer 3600B.

[0298] Several exemplary embodiments have been disclosed herein, but it should be understood that other variations may be possible. These variations are not to be considered as departing from the spirit and scope of the invention, and all such modifications that will be obvious to those skilled in the art are intended to be included within the scope of the claims.

Claims

1. A thermodynamic control circuit for controlling the operation of a heater in a non-nicotine electronic cigarette device, the thermodynamic control circuit comprising: A rail converter circuit configured to convert a power supply voltage into a power signal based on a smoke enable signal, wherein the smoke enable signal is a pulse width modulation signal; and A gate driver circuit includes an integrated gate driver configured to control the application of power to the heater of the non-nicotine electronic cigarette device based on the power signal, a first enable signal, and a second enable signal.

2. The heat engine control circuit as described in claim 1, wherein, The rail converter circuit is configured to disable the power signal in response to the termination of the smoking enable signal.

3. The heat engine control circuit as described in claim 1, wherein... The smoking enable signal is received from the controller of the non-nicotine electronic cigarette device; The rail converter circuit is configured to output a feedback signal to the controller, which is a scaled version of the power signal indicating the current voltage level of the power signal; and The duty cycle of the smoking enable signal is based on the feedback signal.

4. The heat engine control circuit as described in claim 1, wherein... The second enable signal is a pulse width modulation signal; The integrated gate driver is configured to receive the second enable signal at the input pin; and The gate driver circuitry includes a filter circuitry connected to the input pin, the filter circuitry being configured to filter the second enable signal before it is input to the integrated gate driver.

5. The heat engine control circuit as described in claim 4, wherein, The gate driver circuitry includes a pull-down resistor connected to an input pin of the integrated gate driver, the pull-down resistor being configured to maintain the input pin at a logic low level when the second enable signal is in a floating state.

6. The heat engine control circuit as described in claim 1, wherein, The gate driver circuit includes: A bootstrap charge pump circuit is connected between the input voltage pin and the boost pin of the integrated gate driver.

7. The heat engine control circuit as described in claim 6, wherein, The bootstrap charge pump circuit is connected to the switching node pin of the integrated gate driver.

8. The heat engine control circuit as described in claim 6, wherein, The gate driver circuit includes: A filter circuit is connected between the input terminal of the power signal and the bootstrap charge pump circuit.

9. The heat engine control circuit as described in claim 1, wherein, The rail converter circuit includes: The first capacitor is connected between the power supply and the ground terminal; An inductor having a first terminal connected to a first node located between the power source and the first capacitor, and a second terminal connected to a second node; A switching transistor, connected between the second node and ground, is configured to receive a smoking enable signal; The second capacitor has a first terminal connected to the second node and a second terminal connected to the third node; A first diode has a grounded anode and a cathode connected to the third node; The second diode has an anode connected to the third node and a cathode connected to the fourth node; A third capacitor is connected between the fourth node and the ground terminal; and A voltage divider circuit is connected to the fourth node and configured to output a feedback signal based on the power signal.

10. The heat engine control circuit as described in claim 9, wherein, The rail converter circuit also includes: A pull-down resistor is connected between the gate of the switching transistor and ground, and the pull-down resistor is configured to block the output of the power signal when the smoke enable signal has an uncertain state.

11. The heat engine control circuit as described in claim 1, wherein, The gate driver circuit further includes: A first filter circuit is configured to filter the power signal for input to the integrated gate driver; and A second filter circuit is configured to filter the second enable signal for input to the integrated gate driver.

12. The heat engine control circuit as described in claim 1, further comprising: A heat engine drive circuit configured to control the power of the heater, the heat engine drive circuit including a first transistor and a second transistor connected in series between a power source and a ground terminal; and wherein... The gate driver circuit is configured to output a drive voltage to the gate of the first transistor to maintain the gate-source voltage of the first transistor at the voltage level of the power supply signal, regardless of the voltage level of the power supply.

13. The heat engine control circuit as described in claim 1, further comprising: A heat engine drive circuit configured to control the power of the heater, the heat engine drive circuit including a first transistor and a second transistor connected in series between a power source and a ground terminal; and wherein... The gate driver circuit is configured to output a current switching signal to generate a voltage output to the heater, the level of which is independent of the voltage level of the power supply.

14. A non-nicotine electronic cigarette device, comprising: A heater configured to heat a non-nicotine vapor precursor formulation drawn from a non-nicotine reservoir; A rail converter circuit configured to convert a power supply voltage into a power signal based on a smoke enable signal, wherein the smoke enable signal is a pulse width modulation signal; and A gate driver circuit includes an integrated gate driver configured to control the application of power to the heater of the non-nicotine electronic cigarette device based on the power signal, a first enable signal, and a second enable signal.

15. The non-nicotine electronic cigarette device as described in claim 14, wherein, The rail converter circuit is configured to disable the power signal in response to the termination of the smoking enable signal.

16. The non-nicotine electronic cigarette device of claim 14, wherein... The rail converter circuit is configured to output a feedback signal, which is a scaled version of the power signal, indicating the current voltage level of the power signal; and The non-nicotine electronic cigarette device includes a controller configured to generate a smoking enable signal based on the feedback signal.

17. The non-nicotine electronic cigarette device as claimed in claim 16, wherein, The controller is configured to control the duty cycle of the smoking enable signal based on the feedback signal.

18. The non-nicotine electronic cigarette device of claim 14, wherein... The second enable signal is a pulse width modulation signal; The integrated gate driver is configured to receive the second enable signal at the input pin; and The gate driver circuitry includes a filter circuitry connected to the input pin, the filter circuitry being configured to filter the second enable signal before it is input to the integrated gate driver.

19. The non-nicotine electronic cigarette device as claimed in claim 18, wherein, The gate driver circuitry includes a pull-down resistor connected to an input pin of the integrated gate driver, the pull-down resistor being configured to maintain the input pin at a logic low level when the second enable signal is in a floating state.

20. The non-nicotine electronic cigarette device as claimed in claim 14, wherein, The gate driver circuit includes: A bootstrap charge pump circuit is connected between the input voltage pin and the boost pin of the integrated gate driver.

21. The non-nicotine electronic cigarette device as described in claim 20, wherein, The bootstrap charge pump circuit is connected to the switching node pin of the integrated gate driver.

22. The non-nicotine electronic cigarette device as described in claim 20, wherein, The gate driver circuit includes: A filter circuit is connected between the input terminal of the power signal and the bootstrap charge pump circuit.

23. The non-nicotine electronic cigarette device as described in claim 14, wherein, The rail converter circuit includes: The first capacitor is connected between the power supply and the ground terminal; An inductor having a first terminal connected to a first node located between the power source and the first capacitor, and a second terminal connected to a second node; A switching transistor, connected between the second node and ground, is configured to receive a smoking enable signal; The second capacitor has a first terminal connected to the second node and a second terminal connected to the third node; A first diode has a grounded anode and a cathode connected to the third node; The second diode has an anode connected to the third node and a cathode connected to the fourth node; A third capacitor is connected between the fourth node and the ground terminal; and A voltage divider circuit is connected to the fourth node and configured to output a feedback signal based on the power signal.

24. The non-nicotine electronic cigarette device as described in claim 23, wherein, The rail converter circuit also includes: A pull-down resistor is connected between the gate of the switching transistor and ground, and the pull-down resistor is configured to block the output of the power signal when the smoke enable signal has an uncertain state.

25. The non-nicotine electronic cigarette device as described in claim 14, wherein, The gate driver circuit further includes: A first filter circuit is configured to filter the power signal for input to the integrated gate driver; and A second filter circuit is configured to filter the second enable signal for input to the integrated gate driver.

26. The non-nicotine electronic cigarette device of claim 14, further comprising: A heat engine drive circuit configured to control the power of the heater, the heat engine drive circuit including a first transistor and a second transistor connected in series between a power source and a ground terminal; and wherein... The gate driver circuit is configured to output a drive voltage to the gate of the first transistor to maintain the gate-source voltage of the first transistor at the voltage level of the power supply signal, regardless of the voltage level of the power supply.

27. The non-nicotine electronic cigarette device of claim 14, further comprising: A heat engine drive circuit configured to control the power of the heater, the heat engine drive circuit including a first transistor and a second transistor connected in series between a power source and a ground terminal; and wherein... The gate driver circuit is configured to output a current switching signal to generate a voltage output to the heater, the level of which is independent of the voltage level of the power supply.

28. The non-nicotine electronic cigarette device of claim 14, further comprising: A non-nicotine reservoir for storing the non-nicotine vapor precursor formulation; A suction core configured to transfer the non-nicotine vapor precursor formulation from the non-nicotine reservoir to the heater; and wherein... The heater is configured to heat the non-nicotine vapor precursor formulation transferred from the non-nicotine reservoir through the wick.

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