Electronic cigarette control circuit

Abstract

An electronic cigarette control circuit comprises an electronic cigarette circuit and an external power supply circuit. The electronic cigarette circuit comprises an atomization unit and a power supply unit which are connected with each other, the power supply unit comprises a first battery, an electronic cigarette power management circuit and a first charging interface which are connected in sequence, and the atomization unit and the first battery are connected with the output end of the electronic cigarette power management circuit in parallel; the external power supply circuit comprises a second battery, an external power supply management circuit and a second charging interface which are connected in sequence; the second charging interface is used for being connected with the first charging interface in a matched mode so as to supply power to the power supply unit and / or directly supply power to the atomization unit through the external power supply circuit. The electronic cigarette control circuit not only can ensure the endurance time of the electronic cigarette module and meet the use requirements of most scenes, but also can be used in linkage with other equipment, so that the application range is widened, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic cigarettes, in particular to an electronic cigarette control circuit. Background Art

[0002] Electronic atomizers, also known as virtual cigarettes, steam cigarettes, electronic cigarettes, aerosol generating devices, etc., are mainly used to simulate the feeling of smoking without affecting health, for the purpose of quitting smoking or replacing cigarettes.

[0003] Existing electronic atomizers are gradually being designed in the direction of refinement and miniaturization, and the miniaturization of electronic atomizers is usually achieved by reducing the size of the battery module. Although this design helps to reduce the size of the electronic atomizer, it usually greatly shortens the battery life, causing users to have battery life anxiety during use, which in turn reduces the user experience. At the same time, the existing electronic atomizers have a single usage scenario and cannot be linked with other smart devices. Utility Model Content

[0004] The purpose of the utility model is to provide an electronic cigarette control circuit, including an electronic cigarette circuit and an external power supply circuit;

[0005] The electronic cigarette circuit comprises an atomization unit and a power supply unit connected to each other, the power supply unit comprises a first battery, an electronic cigarette power management circuit and a first charging interface connected in sequence, the atomization unit and the first battery are connected in parallel to the output end of the electronic cigarette power management circuit;

[0006] The external power supply circuit includes a second battery, an external power supply management circuit and a second charging interface connected in sequence; the second charging interface is used to match and connect with the first charging interface to supply power to the power supply unit and / or directly to the atomization unit through the external power supply circuit.

[0007] In one achievable manner, the electronic cigarette circuit further includes a first processor and a first switch, wherein the first switch is connected between the atomization unit and an output end of the electronic cigarette power management circuit, and the first end of the first processor is connected to a control end of the first switch for controlling the on / off connection between the atomization unit and the first battery.

[0008] In one achievable manner, the electronic cigarette circuit further includes a second switch, which is connected between the first battery and the output end of the electronic cigarette power management circuit, and the second end of the first processor is connected to the control end of the second switch, for controlling the on and off between the first battery and the electronic cigarette power management circuit.

[0009] In one achievable manner, the electronic cigarette circuit further includes an airflow sensor, a first end of the airflow sensor is connected to an output end of the electronic cigarette power management circuit, a second end of the airflow sensor is grounded, and a third end of the airflow sensor is connected to a third end of the first processor for sending a microphone trigger signal to the first processor.

[0010] In one achievable manner, the electronic cigarette power management circuit includes a first power path, the first power path includes a third switch, a first end of the third switch is connected to the first charging interface, a second end of the third switch is connected to the output end of the electronic cigarette power management circuit, and a control end of the third switch is connected to the fourth end of the first processor.

[0011] In one achievable manner, the electronic cigarette power management circuit includes a second power path, the second power path includes a first power manager, a first end of the first power manager is connected to the first charging interface, and a second end of the first power manager is connected to an output end of the electronic cigarette power management circuit.

[0012] In one feasible manner, the external power supply circuit also includes a charging management circuit, which includes a third charging interface and a second power manager, the first end of the second power manager receives an external charging voltage through the third charging interface, and the second end of the second power manager is connected to the second battery.

[0013] In one implementable manner, the external power management circuit includes a third power path, and the third power path includes a third power manager, a first inductor, a first diode and a first capacitor. The first end of the third power manager is connected to the second battery and the first end of the first inductor, the second end of the third power manager is respectively connected to the second end of the first inductor and the anode of the first diode, the cathode of the first diode is connected to the second charging interface, and the first capacitor is connected between the cathode of the first diode and ground.

[0014] In one implementable manner, the external power management circuit includes a second processor and a fourth power path, the fourth power path includes a fourth switch, a first end of the fourth switch is connected to the second battery, a second end of the fourth switch is connected to the cathode of the first diode, and the second processor is connected to the control end of the fourth switch to control the on and off of the fourth switch.

[0015] In one achievable manner, the external power supply circuit further includes an information indicating device, and the information indicating device is connected to the second processor.

[0016] The electronic cigarette control circuit provided by the utility model has an atomization unit and a power supply unit connected to each other, wherein the power supply unit includes a first battery, an electronic cigarette power management circuit and a first charging interface connected in sequence, and the atomization unit is connected in parallel with the first battery to the output end of the electronic cigarette power management circuit; the external power supply circuit includes a second battery, an external power management circuit and a second charging interface connected in sequence; the second charging interface is used to match and connect with the first charging interface, and can supply power to the power supply unit and / or directly to the atomization unit through the external power supply circuit. The second charging interface is connected to the first charging interface through an interface matching connection, so the external power supply circuit can charge other electronic devices after being unplugged from the electronic cigarette circuit, and can be used in conjunction with other electronic devices, thereby improving the scope of application and practicality of the electronic cigarette control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the electronic cigarette component in the embodiment of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the explosion structure.

[0019] Figure 3 for Figure 1 Schematic diagram of the explosion structure in another direction.

[0020] Figure 4 It is a cross-sectional schematic diagram of the electronic cigarette module in the embodiment of the present utility model.

[0021] Figure 5 It is a cross-sectional schematic diagram of an external power supply module in an embodiment of the utility model.

[0022] Figure 6 It is a schematic diagram of the exploded structure of the external power supply module in the embodiment of the utility model.

[0023] Figure 7 Schematic diagram of the explosion structure of the electronic cigarette module in the embodiment of the utility model.

[0024] Figure 8 It is a schematic diagram of the explosion structure of the electronic cigarette module in another direction in the embodiment of the utility model.

[0025] Fig. 9 This is a schematic diagram of the structure of the electronic cigarette module in the embodiment of the utility model when used as a bracket.

[0026] Fig.10 It is a schematic diagram of the exploded structure of the bracket assembly in the embodiment of the utility model.

[0027] Fig.11The figure is a schematic diagram of the exploded structure of an external power supply module in another embodiment of the utility model.

[0028] Fig.12 This is a block diagram of the electronic cigarette control circuit in the embodiment of the present utility model.

[0029] Fig.13 This is a schematic diagram of the first switch connection in an embodiment of the utility model.

[0030] Fig.14 This is a schematic diagram of the connection of the power supply unit in the embodiment of the utility model.

[0031] Fig.15 This is a schematic diagram of the connection of the airflow sensor in the embodiment of the present utility model.

[0032] Fig.16 This is a connection diagram of the charging management circuit in the embodiment of the utility model.

[0033] Fig.17 This is a schematic diagram of the connection of an external power management circuit in an embodiment of the utility model.

[0034] Fig.18 This is a schematic diagram of the connection of indicator lights in an embodiment of the utility model.

[0035] Fig.19 This is a schematic diagram of display screen connection in an embodiment of the present utility model. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0038] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the utility model are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed by the utility model.

[0039] like Figures 1 to 8As shown, the electronic cigarette assembly provided by the embodiment of the utility model includes an electronic cigarette module 1 and an external power supply module 2. The electronic cigarette module 1 includes an electronic cigarette housing 11, a first charging interface 12, and an atomizing assembly 13 and a power supply assembly 14 arranged in the electronic cigarette housing 11. The power supply assembly 14 is electrically connected to the atomizing assembly 13. The power supply assembly 14 has a charging and discharging function. The power supply assembly 14 is used to supply power to the atomizing assembly 13. The atomizing assembly 13 is used to heat the atomizable material after power is turned on to generate smoke for the user to inhale. The first charging interface 12 is arranged in the shell wall of the electronic cigarette housing 11 or in the electronic cigarette housing 11. The first charging interface 12 is electrically connected to the power supply assembly 14. A charging hole 110 is provided on the electronic cigarette housing 11 at a position corresponding to the first charging interface 12.

[0040] The external power supply module 2 includes a power supply shell 21, a second charging interface 22 and a power supply component 23 arranged in the power supply shell 21, and the power supply component 23 has a charging and discharging function; the second charging interface 22 is electrically connected to the power supply component 23, and the second charging interface 22 is protruded outside the power supply shell 21 (that is, the second charging interface 22 extends out of the power supply shell 21); the second charging interface 22 is used to plug and cooperate with the first charging interface 12 to charge the power supply component 14 through the power supply component 23 and / or directly supply power to the atomization component 13.

[0041] During charging, the second charging interface 22 is inserted from the charging hole 110 and fixedly plugged and electrically connected to the first charging interface 12, so that the power supply component 23 is electrically connected to the power supply component 14 through the second charging interface 22 and the first charging interface 12, and the power supply component 23 is electrically connected to the atomizer component 13 through the power supply component 14, thereby charging the power supply component 14 and / or supplying power to the atomizer component 13. As a result, the power supply component 14 can adopt a miniaturized design, that is, there is no need to adopt a large-volume, large-capacity battery module, which is conducive to the miniaturized design of the electronic cigarette module 1.

[0042] As an implementation mode, when the second charging interface 22 is plugged into the first charging interface 12, the atomizer assembly 13 is powered by the power supply assembly 23 first. Specifically, when the power supply assembly 14 is insufficient and the atomizer assembly 13 is in working state, the power supply assembly 23 can charge the power supply assembly 14 while directly supplying power to the atomizer assembly 13; when the power supply assembly 14 is fully charged and the atomizer assembly 13 is in working state, the power supply assembly 23 only supplies power to the atomizer assembly 13 and does not charge the power supply assembly 14; when the power supply assembly 14 is insufficient and the atomizer assembly 13 is not in working state, the power supply assembly 23 only charges the power supply assembly 14.

[0043] The electronic cigarette assembly provided by the utility model is provided with an external power supply module 2, and the second charging interface 22 of the external power supply module 2 can be plugged and matched with the first charging interface 12, so as to charge the electronic cigarette module 1 and / or directly supply power to the atomization assembly 13, thereby ensuring the battery life of the electronic cigarette module 1 to meet the use requirements of most scenarios. At the same time, since the second charging interface 22 is convexly arranged outside the power supply housing 21, and the second charging interface 22 is plugged and matched with the first charging interface 12, the external power supply module 2 can not only charge the electronic cigarette module 1, but also charge other electronic devices after being unplugged from the electronic cigarette module 1, and can be used in conjunction with other electronic devices, thereby improving the scope of application and practicality of the electronic cigarette assembly (it should be noted that if the second charging interface 22 adopts a built-in design similar to the first charging interface 12, it cannot be adapted to most charging ports on the market, that is, it cannot directly charge other electronic devices, and an additional charging cable is required for charging, which is inconvenient to use).

[0044] like Figure 4 As shown, as an embodiment, the power supply assembly 14 includes a first battery 141 and a first circuit board 142, the first battery 141 is electrically connected to the first circuit board 142 (specifically electrically connected via a wire), and the first circuit board 142 is electrically connected to the atomizer assembly 13 (specifically electrically connected via a wire). The first charging interface 12 is disposed on the first circuit board 142 and is electrically connected to the first circuit board 142; when the second charging interface 22 is plugged into the first charging interface 12, the power supply assembly 23 can charge the first battery 141.

[0045] like Figure 2 and Figure 4 As shown, as an embodiment, the electronic cigarette housing 11 includes a main housing 11A and a base 11B arranged at the bottom of the main housing 11A (the bottom of the main housing 11A is provided with an opening, and the base 11B is arranged at the bottom opening of the main housing 11A). A sealing silicone block 144 is sandwiched between the first circuit board 142 and the base 11B (the sealing silicone block 144 plays a role of sealing, buffering, etc.), the top end of the first charging interface 12 is connected to the first circuit board 142, and the bottom end of the first charging interface 12 passes downward through the sealing silicone block 144 and then extends into the charging hole 110.

[0046] like Figure 4 As shown, as an implementation mode, an airflow sensor 143 (also known as a microphone) is further provided in the sealing silicone block 144, and the airflow sensor 143 is electrically connected to the first circuit board 142; the airflow sensor 143 is used to be opened by the pressure difference when the user inhales, and the power supply component 14 supplies power to the atomization component 13 accordingly, that is, the airflow sensor 143 acts as a switch (the specific working principle of the airflow sensor 143 can be referred to the prior art and will not be repeated here).

[0047] like Figures 2 to 4 As shown, as an embodiment, a flue 1321 is provided in the atomizer assembly 13, and smoke generated by heating the atomizer assembly 13 can be discharged through the flue 1321; an air inlet 111 connected to the flue 1321 is provided on the base 11B. A sink 211 is provided on the outer surface of the power supply housing 21 at a position corresponding to the second charging interface 22 (i.e., a sink 211 is provided on the top surface of the power supply housing 21), and a flange 212 surrounding the sink 211 is provided at the side of the power supply housing 21, and a notch 212a is provided on the flange 212.

[0048] Specifically, in this embodiment, the electronic cigarette module 1 is a steam-type electronic cigarette for heating and atomizing the smoke oil or smoke paste. Of course, in other embodiments, the electronic cigarette module 1 can also be a heat-not-burn electronic cigarette device for heating and atomizing tobacco products (for details, please refer to patents such as CN219270168U). In this case, the atomization component 13 can be a heating tube component, and the flue 1321 is arranged in the heating tube component.

[0049] like Figures 2 to 5 As shown, as an embodiment, the base 11B is provided with a first magnetic attraction member 16 . The power supply housing 21 is provided with a second magnetic attraction member 24 .

[0050] like Figure 5 and Figure 6 As shown, as an embodiment, the power supply assembly 23 includes a second battery 231 and a second circuit board 232, the second battery 231 is electrically connected to the second circuit board 232, and the second charging interface 22 is electrically connected to the second circuit board 232. The external power supply module 2 also includes a third charging interface 25, which is arranged in the shell wall of the power supply housing 21 or in the power supply housing 21, and the third charging interface 25 is arranged on the second circuit board 232 and is electrically connected to the second circuit board 232. A charging port 213 is provided on the power supply housing 21 at a position corresponding to the third charging interface 25, and the second battery 231 can be charged through the third charging interface 25.

[0051] As an implementation manner, the first charging interface 12, the second charging interface 22 and the third charging interface 25 can be a Type-C interface, a USB interface, a Lightning interface, etc.

[0052] like Figure 5 and Figure 6 As shown, as an embodiment, the power supply assembly 23 further includes a third circuit board 233. The second charging interface 22 is disposed on the third circuit board 233 and electrically connected to the third circuit board 233, and the third circuit board 233 is electrically connected to the second circuit board 232 through a wire (not shown); the bottom end of the second charging interface 22 is connected to the third circuit board 233.

[0053] like Figure 5 and Figure 6 As shown, as an embodiment, the external power supply module 2 also includes an information indicating device 26 disposed in the power supply housing 21, and the information indicating device 26 is electrically connected to the second circuit board 232. In the present embodiment, the information indicating device 26 is a display screen 261, and the display screen 261 is located below the second circuit board 232, and the display screen 261 is fixed to the second circuit board 232 by a fixing bracket 27. When charging, in addition to being able to display information such as the power status and charge and discharge status of the second battery 231, the display screen 261 can also display relevant information of the electronic cigarette module 1 (that is, the external power supply module 2 can automatically read the information of the electronic cigarette module 1), such as the flavor type of the electronic cigarette oil, the remaining amount of the oil, the remaining puffing time, the power information of the electronic cigarette module 1, etc. At the same time, in the present embodiment, the position of the power supply housing 21 corresponding to the information indicating device 26 is a transparent structure (for example, using transparent plastic, transparent glass, etc.), so that the information indicating device 26 can display information through the transparent housing. Of course, as Fig.11 As shown, in other embodiments, the information indicating device 26 may also be an indicator light 262 (or the information indicating device 26 includes both a display screen 261 and an indicator light 262). The indicator light 262 is disposed on the second circuit board 232 and is electrically connected to the second circuit board 232. At this time, the information indicating device 26 can generally display information such as power level and charging and discharging status.

[0054] like Figure 5 and Figure 6 As shown, as an embodiment, the power housing 21 includes a first housing 21A and a second housing 21B connected to each other, and the second housing 21B is a transparent structure (or the entire structure is a transparent structure) at least in a portion corresponding to the information indicating device 26 .

[0055] like Figure 2 and Figures 7 to 10 As shown, as an embodiment, the electronic cigarette module 1 can also be used as a bracket. Specifically, the electronic cigarette module 1 also includes a bracket assembly 17, and the bracket assembly 17 is rotatably connected to the electronic cigarette housing 11. The electronic cigarette housing 11 can be tilted and supported by the bracket assembly 17. At this time, the external device 3 (such as a mobile phone, tablet, etc.) can lean on the electronic cigarette housing 11, thereby realizing the bracket function of the electronic cigarette module 1, thereby further improving the linkage between the electronic cigarette assembly and other electronic devices, and improving the scope of application and practicality of the electronic cigarette assembly.

[0056] like Figure 7 and Fig. 9As shown, as an embodiment, the electronic cigarette module 1 also includes a third magnetic member 18 for adsorbing the external device 3. When the external device 3 leans against the electronic cigarette housing 11, the third magnetic member 18 can adsorb the external device 3 to prevent the external device 3 from slipping.

[0057] like Figure 2 and Figure 8 As shown, as an embodiment, a receiving groove 112 is provided on the outer surface of the electronic cigarette housing 11 at a position corresponding to the bracket assembly 17, so that the outer surface of the electronic cigarette housing 11 remains flat to improve its aesthetics.

[0058] like Figures 7 to 10 As shown, as an embodiment, the bracket assembly 17 includes a rotating part 171 and a fixed part 172, and a limiting groove 174 is provided on the other of the rotating part 171 and the fixed part 172; the limiting protrusion 173 is used to generate a damping effect on the rotating part 171 when it rotates, and when the bracket assembly 17 is in a folded state, the limiting protrusion 173 is stuck in the limiting groove 174.

[0059] The electronic cigarette assembly provided in this embodiment is provided with an external power supply module 2, and the second charging interface 22 of the external power supply module 2 can be plugged and matched with the first charging interface 12, so as to charge the electronic cigarette module 1 and / or directly supply power to the atomization assembly 13, thereby ensuring the battery life of the electronic cigarette module 1 to meet the use requirements of most scenarios. At the same time, since the second charging interface 22 is convexly arranged outside the power supply housing 21, and the second charging interface 22 is plugged and matched with the first charging interface 12, the external power supply module 2 can not only charge the electronic cigarette module 1, but also charge other electronic devices after being unplugged from the electronic cigarette module 1. Moreover, the electronic cigarette module 1 can act as a bracket and be used in conjunction with other electronic devices, thereby improving the scope of application and practicality of the electronic cigarette assembly.

[0060] On the basis of the above embodiments, the present application also provides an electronic cigarette control circuit for driving a circuit of an electronic cigarette component.

[0061] like Fig.12 As shown, and referring to the first embodiment, the electronic cigarette control circuit includes an electronic cigarette circuit 5 and an external power supply circuit 4.

[0062] It can be understood that the electronic cigarette circuit 5 can be arranged in the electronic cigarette module 1 , and the external power supply circuit 4 can be arranged in the external power supply module 2 .

[0063] The electronic cigarette circuit 5 includes an atomization unit 51 and a power supply unit 52 which are connected to each other.

[0064] It can be understood that the atomization unit 51 can be disposed in the atomization assembly 13 , and the power supply unit 52 can be disposed in the power supply assembly 14 .

[0065] The power supply unit 52 includes a first battery 141 , an electronic cigarette power management circuit 521 and a first charging interface 12 which are connected in sequence. The atomization unit 51 and the first battery 141 are connected in parallel to the output end of the electronic cigarette power management circuit 521 .

[0066] It can be understood that in the absence of an external power source, the first battery 141 can directly provide working power to the atomization unit 51 .

[0067] The external power circuit 4 includes a second battery 231 , an external power management circuit 41 and a second charging interface 22 which are connected in sequence.

[0068] The second charging interface 22 is used to match and connect with the first charging interface 12 to supply power to the power supply unit 52 and / or directly to the atomization unit 51 through the external power circuit 4 .

[0069] During charging, the second charging interface 22 is electrically connected to the first charging interface 12, so that the external power circuit 4 is electrically connected to the power supply unit 52 through the second charging interface 22 and the first charging interface 12, and the external power circuit 4 is electrically connected to the atomization unit 51 through the second charging interface 22 and the first charging interface 12, thereby charging the power supply unit 52 and / or supplying power to the atomization unit 51. As a result, the power supply component 14 can adopt a miniaturized design, and the first battery 141 does not need to adopt a large-volume, large-capacity battery module, which is conducive to the miniaturized design of the electronic cigarette module 1.

[0070] As an implementation mode, when the second charging interface 22 is plugged into the first charging interface 12, the atomization unit 51 is preferentially powered by the external power circuit 4. Specifically, when the power of the first battery 141 in the power supply unit 52 is insufficient and the atomization unit 51 is in working state, the external power circuit 4 can charge the power supply unit 52 while directly supplying power to the atomization unit 51; when the power supply unit 52 is fully charged and the atomization unit 51 is in working state, the external power circuit 4 only supplies power to the atomization unit 51 and does not charge the power supply unit 52; when the power supply unit 52 is insufficient and the atomization unit 51 is not in working state, the external power circuit 4 only charges the power supply unit 52.

[0071] The electronic cigarette control circuit of this embodiment is connected to each other through an atomization unit and a power supply unit. The power supply unit includes a first battery, an electronic cigarette power management circuit and a first charging interface connected in sequence. The atomization unit is connected in parallel with the first battery to the output end of the electronic cigarette power management circuit; the external power supply circuit includes a second battery, an external power management circuit and a second charging interface connected in sequence; the second charging interface is used to match and connect with the first charging interface, and can supply power to the power supply unit and / or directly to the atomization unit through the external power supply circuit. The second charging interface is connected to the first charging interface through an interface matching connection, so the external power supply circuit can charge other electronic devices after being unplugged from the electronic cigarette circuit, and can be used in conjunction with other electronic devices, thereby improving the scope of application and practicality of the electronic cigarette control circuit.

[0072] Please refer to Fig.13 As an embodiment, the electronic cigarette circuit 5 further includes a first processor U1 and a first switch K1. The first switch K1 is connected between the atomization unit 51 and the output end of the electronic cigarette power management circuit 521, and the first end of the first processor U1 is connected to the control end of the first switch K1, for controlling the connection between the atomization unit 51 and the first battery 141.

[0073] For example, when the first switch K1 is turned on, the atomization unit 51 enters the working state through the working voltage provided by the first battery 141 or the external power circuit 4. When the first switch K1 is turned off, the atomization unit 51 disconnects the working voltage provided by the first battery 141 and the external power circuit 4 and stops working. It should be noted that the first switch K1 can be a single switch component or a switch group composed of multiple switch components. Please refer to Fig.13 The first switch K1 may be a P-channel or N-channel field effect transistor. In other embodiments, the first switch K1 may also be other types of switch components according to circuit conditions, and the present invention does not limit this.

[0074] Please refer to Fig.14 As an embodiment, the electronic cigarette circuit 5 also includes a second switch K2, which is connected between the first battery 141 and the output end of the electronic cigarette power management circuit 521, and the second end of the first processor U1 is connected to the control end of the second switch K1, so as to control the on and off between the first battery 141 and the electronic cigarette power management circuit 521.

[0075] Exemplarily, when the power battery 141 needs to be charged, the second switch K2 is turned on, and the first battery 141 can be charged through the electronic cigarette power management circuit 521. When the power battery 141 does not need to be charged, the second switch K2 is turned off, and the first battery 141 is disconnected from the electronic cigarette power management circuit 521. Exemplarily, when it is necessary to provide a working voltage for the atomization unit 51 through the first battery 141, the second switch K2 is turned on, so that the first battery 141 can provide a working voltage for the atomization unit 51. It should be noted that the second switch K2 can be a single switch element or a switch group composed of multiple switch elements. The second switch K2 can be a P-channel or N-channel field effect transistor. In other embodiments, the second switch K2 can also select other types of switch elements according to the circuit conditions, and the utility model is not limited to this.

[0076] As an embodiment, the electronic cigarette circuit 5 also includes an airflow sensor 143, a first end of the airflow sensor 143 is connected to the output end of the electronic cigarette power management circuit 521, a second end of the airflow sensor 143 is grounded, and a third end of the airflow sensor 143 is connected to the third end of the first processor U1, for sending a microphone trigger signal to the first processor U1.

[0077] Exemplarily, the airflow sensor 143 is also called a microphone. When the electronic cigarette is in standby mode, the first processor U1 detects the microphone and starts or shuts down the atomization unit 51 according to the result of the microphone detection. Exemplarily, when the electronic cigarette circuit 5 is not connected to the external power supply circuit 4, the airflow sensor 143 uses the working voltage provided by the first battery 141 during standby and operation. When the electronic cigarette circuit 5 is connected to the external power supply circuit 4, the working voltage can be provided by the electronic cigarette power management circuit 521.

[0078] Please continue to refer to Fig.14 As an implementation mode, the electronic cigarette power management circuit includes a first power path 5211, and the first power path 5211 includes a third switch K3. The first end of the third switch K3 is connected to the first charging interface 12, the second end of the third switch K3 is connected to the output end of the electronic cigarette power management circuit 521, and the control end of the third switch K3 is connected to the fourth end of the first processor U1.

[0079] When the third switch K3 is turned on, the voltage input by the first charging interface 12 can be directly conducted to the output end of the electronic cigarette power management circuit 521. For example, when the first battery 141 needs a 5V charging voltage provided by the electronic cigarette power management circuit 521, the third switch K3 can be controlled to be turned on by the first processor U1, thereby directly providing the first battery 141 with the 5V voltage input by the first charging interface 12.

[0080] It should be noted that the third switch K3 can be a single switch element or a switch group composed of multiple switch elements. The third switch K3 can be a P-channel or N-channel field effect transistor. In other embodiments, the third switch K3 can also select other types of switch elements according to circuit conditions, and the utility model does not limit this.

[0081] Please continue to refer to Fig.14 As an implementation, the electronic cigarette power management circuit 521 includes a second power path 5212, and the second power path 5212 includes a first power manager U2. A first end of the first power manager U2 is connected to the first charging interface 12, and a second end of the first power manager U2 is connected to an output end of the electronic cigarette power management circuit 521.

[0082] When the third switch K3 is disconnected, the voltage input by the first charging interface 12 can be conducted to the output end of the electronic cigarette power management circuit 521 through the second power path 5212. For example, the first power manager U2 can step down the 5V voltage input by the first charging interface 12 to 4.2V output. For example, when the atomization unit 51 needs the 4.2V charging voltage provided by the electronic cigarette power management circuit 521, the third switch K3 can be controlled to be disconnected by the first processor U1, so as to provide the atomization unit 51 with the 4.2V voltage output by the first power manager U2.

[0083] Please refer to Fig.16 As an implementation mode, the external power supply circuit 4 also includes a charging management circuit 42, the charging management circuit 42 includes a third charging interface 25 and a second power manager U3, the first end of the second power manager U3 receives an external charging voltage through the third charging interface 25, and the second end of the second power manager U3 is connected to the second battery 231.

[0084] Exemplarily, when the third charging interface 25 is connected to an external charging power source, the second battery 231 can be charged through the charging management circuit 42 .

[0085] Please refer to Fig.17 As an implementation mode, the external power management circuit 41 includes a third power path 411, and the third power path 411 includes a third power manager U4, a first inductor L1, a first diode D1, and a first capacitor C1. The first end of the third power manager U4 is connected to the second battery 231 and the first end of the first inductor L1, the second end of the third power manager 411 is respectively connected to the second end of the first inductor L1 and the anode of the first diode D1, the cathode of the first diode D1 is connected to the second charging interface 22, and the first capacitor C1 is connected between the cathode of the first diode D1 and the ground.

[0086] Exemplarily, the third power manager U4, the first inductor L1, the first diode D1 and the first capacitor C1 in the third power path 411 form a boost circuit. When the second battery 231 provides a charging voltage of 5V to the outside through the second charging interface 22, since the voltage of a general rechargeable battery is 4.2V, it is necessary to increase the voltage of the rechargeable battery to 5V through the boost circuit. It can be understood that during the current drop or startup process of the first inductor L1, the grounding path of the first inductor L1 is turned on, so that the current of the first inductor L1 gradually increases. During the current increase process of the first inductor L1, the grounding path of the first inductor L1 is disconnected, and the voltage at the output end of the first inductor L1 increases due to the continued increase of the current, so that it is stored in the first capacitor C1 through the first diode D1. By controlling the switch duty cycle of the third power manager U4, the average voltage of the first capacitor C1 can be maintained at a voltage level of 5V, so that the charging voltage is output to the outside through the second charging interface 22.

[0087] Please continue to refer to Fig.17 As an implementation manner, the external power management circuit 41 also includes a second processor U5 and a fourth power path 412, the fourth power path 412 includes a fourth switch K4, a first end of the fourth switch K4 is connected to the second battery 231, a second end of the fourth switch K4 is connected to the cathode of the first diode D1, and the second processor U5 is connected to the control end of the fourth switch K4 to control the on and off of the fourth switch K4.

[0088] When the fourth switch K4 is turned on, the battery voltage of the second battery 231 can be directly output to the output end of the external power management circuit 41. For example, when a 4.2V voltage needs to be output through the second charging interface 22, the battery voltage of the second battery 231 can be directly output through the second charging interface 22 through the fourth power path 412.

[0089] Exemplarily, both the first charging interface 12 and the second charging interface 22 are TYPEC (Type-c) interfaces, so the first processor U1 and the second processor U2 can communicate information with each other using the relevant communication protocol of the TYPEC interface. When the first processor U1 detects a microphone trigger signal, a 4.2V charging voltage can be provided to the atomization unit 51 through the electronic cigarette power management circuit 521. At this time, the first processor U1 controls the third switch K3 to turn on, and at the same time, the first processor U1 notifies the second processor U5 to control the fourth switch K4 to turn on, thereby providing the atomization unit 51 with a 4.2V voltage directly output by the second battery 231.

[0090] It should be noted that the fourth switch K4 can be a single switch or a switch group composed of multiple switch components. The fourth switch K4 can be a P-channel or N-channel field effect transistor. In other embodiments, the fourth switch K4 can also select other types of switch components according to circuit conditions, and the utility model does not limit this.

[0091] As an implementation manner, the external power supply circuit further includes an information indicating device 26, and the information indicating device 26 is connected to the second processor U5.

[0092] Please refer to Fig.18 , exemplarily, the information indicating device 26 may also be an indicator light 262. The indicator light 262 is provided with an operating voltage by the second battery 231, and is displayed and controlled by the second processor U5. Exemplarily, the indicator light 262 may be an LED-RGB indicator light. At this time, the information indicating device 26 may generally display information such as power level, charge and discharge status, etc.

[0093] It should be noted that the indicator light 262 can be a single light or a light group consisting of multiple lights. The indicator light 262 can be an LED lamp bead. In other embodiments, the indicator light 262 can also select other types of indicator lights according to specific circumstances, and the utility model does not limit this.

[0094] Please refer to Fig.19 , exemplarily, the information indicating device 26 can be a display screen 261. The display screen 261 is provided with a power supply voltage by the second battery 231, and a suitable working voltage is provided through a boost circuit. The display screen 261 is controlled by the second processor U5. In this embodiment, when charging, in addition to being able to display information such as the power status and charge and discharge status of the second battery 231, the display screen 261 can also display relevant information of the electronic cigarette module 1 (that is, the external power supply circuit 4 can automatically read the information of the electronic cigarette circuit 5), such as the flavor type of the electronic cigarette oil, the remaining amount of oil, the remaining puffing time, and the power information of the electronic cigarette circuit 5. Of course, as Fig.18 As shown, in other embodiments, the information indicating device 26 may also be an indicator light 262 , or the information indicating device 26 may include both a display screen 261 and an indicator light 262 .

[0095] The electronic cigarette control circuit provided by the utility model can supply power to the power supply unit and / or directly to the atomization unit through an external power supply circuit through the interconnected atomization unit and power supply unit. In addition to being able to charge the electronic cigarette circuit, the external power supply circuit can also be unplugged from the electronic cigarette circuit to charge other electronic devices and be used in conjunction with other electronic devices, thereby improving the scope of application and practicality of the electronic cigarette control circuit.

[0096] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electronic cigarette control circuit, characterized in that: Including electronic cigarette circuit and external power supply circuit; The electronic cigarette circuit comprises an atomization unit and a power supply unit connected to each other, the power supply unit comprises a first battery, an electronic cigarette power management circuit and a first charging interface connected in sequence, the atomization unit and the first battery are connected in parallel to the output end of the electronic cigarette power management circuit; The external power supply circuit includes a second battery, an external power supply management circuit and a second charging interface connected in sequence; the second charging interface is used to match and connect with the first charging interface to supply power to the power supply unit and / or directly to the atomization unit through the external power supply circuit.

2. An electronic cigarette control circuit according to claim 1, characterized in that: The electronic cigarette circuit also includes a first processor and a first switch. The first switch is connected between the atomization unit and the output end of the electronic cigarette power management circuit. The first end of the first processor is connected to the control end of the first switch to control the connection between the atomization unit and the first battery.

3. An electronic cigarette control circuit according to claim 2, characterized in that: The electronic cigarette circuit also includes a second switch, which is connected between the first battery and the output end of the electronic cigarette power management circuit. The second end of the first processor is connected to the control end of the second switch to control the on and off between the first battery and the electronic cigarette power management circuit.

4. The electronic cigarette control circuit according to claim 2, characterized in that: The electronic cigarette circuit also includes an airflow sensor, a first end of the airflow sensor is connected to the output end of the electronic cigarette power management circuit, a second end of the airflow sensor is grounded, and a third end of the airflow sensor is connected to the third end of the first processor for sending a microphone trigger signal to the first processor.

5. An electronic cigarette control circuit according to claim 4, characterized in that: The electronic cigarette circuit includes a first power path, the first power path includes a third switch, a first end of the third switch is connected to the first charging interface, a second end of the third switch is connected to the output end of the electronic cigarette power management circuit, and a control end of the third switch is connected to the fourth end of the first processor.

6. An electronic cigarette control circuit according to claim 5, characterized in that: The external power management circuit includes a second power path, the second power path includes a first power manager, a first end of the first power manager is connected to the first charging interface, and a second end of the first power manager is connected to the output end of the electronic cigarette power management circuit.

7. An electronic cigarette control circuit according to any one of claims 1 to 6, characterized in that: The external power supply circuit also includes a charging management circuit, which includes a third charging interface and a second power manager, wherein a first end of the second power manager receives an external charging voltage through the third charging interface, and a second end of the second power manager is connected to the second battery.

8. An electronic cigarette control circuit according to claim 7, characterized in that: The external power management circuit includes a third power path, and the third power path includes a third power manager, a first inductor, a first diode and a first capacitor. The first end of the third power manager is connected to the second battery and the first end of the first inductor, the second end of the third power manager is respectively connected to the second end of the first inductor and the anode of the first diode, the cathode of the first diode is connected to the second charging interface, and the first capacitor is connected between the cathode of the first diode and ground.

9. An electronic cigarette control circuit according to claim 8, characterized in that: The external power management circuit includes a second processor and a fourth power path, the fourth power path includes a fourth switch, a first end of the fourth switch is connected to the second battery, a second end of the fourth switch is connected to the cathode of the first diode, and the second processor is connected to the control end of the fourth switch to control the on and off of the fourth switch.

10. An electronic cigarette control circuit according to claim 9, characterized in that: The external power supply circuit further includes an information indicating device, and the information indicating device is connected to the second processor.

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