Child lock control circuit, method and electronic cigarette

Abstract

The present application provides a child lock control circuit for an electronic cigarette, comprising: a first state detection module and a second state detection module; a first child lock module, which includes a first timing unit, a first counting unit and a first timing and counting judgment unit; a second child lock module, which is electrically connected to the second state detection module; a switch control module, which is electrically connected to the first child lock module and the second child lock module respectively; a power MOS tube, whose control end is electrically connected to the switch control module; the first child lock module is used to generate a first child lock signal to make the electronic cigarette enter the first child lock state, and the second child lock module is used to generate a second child lock signal to make the electronic cigarette enter the second child lock state. When the electronic cigarette enters the second child lock state, the first timing unit and the first counting unit receive a first reset signal to stop the timing of the first timing unit and reset it to zero, and the first counting unit stops counting and resets it to zero. The present application also provides an electronic cigarette and a child lock control method.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic cigarettes, and in particular, relates to a child lock control circuit, method and electronic cigarette. Background Art

[0002] Electronic cigarettes are electronic devices that simulate cigarettes. They replace traditional cigarettes by simulating the taste and smoke of real cigarettes, which not only saves consumers' expenses but also reduces the harm caused by "second-hand smoke".

[0003] At present, electronic cigarettes are quite common and children can easily get in touch with them. Most electronic cigarettes do not have a child lock function. Due to children's curiosity and imitation, it is very easy for children to accidentally inhale electronic cigarettes. Therefore, for safety reasons, it is very necessary for electronic cigarettes to have a child lock function to prevent children from accidentally inhaling or touching. At present, the child lock function of electronic cigarettes on the market generally uses Bluetooth, WIFI, NFC, fingerprints, touch buttons, mechanical buttons, suction detection, smoke bomb detection and other methods to achieve child protection. In order to achieve the child lock function, the electronic cigarette generally includes a first child lock state and a second child lock state, wherein the first child lock state is, for example, a child lock locked state, and the second child lock state is generally a child lock unlocked state, or vice versa, in the child lock locked state, the user inhales the electronic cigarette, and the electronic cigarette will not emit smoke, which is conducive to preventing children from accidentally inhaling or touching. When the user needs to use it normally, it is necessary to trigger the unlocking to make the electronic cigarette enter the child lock unlocked state. In the child lock unlocked state, the electronic cigarette can be used normally, and when the user inhales, the electronic cigarette will emit smoke for the user to inhale.

[0004] The inventor of the present application has found through a large number of tests and experiments that when the electronic cigarette is in the first child lock state, the normal use or misuse by the user may cause the circuit that causes the electronic cigarette to enter the first child lock state to work. For example, the circuit that causes the electronic cigarette to enter the first child lock state includes a timing unit and a counting unit. The timing unit is triggered to count, and the counting unit is triggered to count. At this time, if the electronic cigarette enters the second child lock state, since the timing unit is already timing, the counting unit has stored the count value. Therefore, in the second child lock state, the user may trigger the electronic cigarette less than expected times, which will cause the electronic cigarette to return to the first child lock state. This will cause logical confusion during the user's use, which does not meet the user's expectations and causes trouble to the user's operation and use. Moreover, the user will think that the electronic cigarette itself is damaged, causing damage to the brand of the electronic cigarette company. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the present application is to provide a child lock control circuit and method of an electronic cigarette and an electronic cigarette to reduce the troubles of users.

[0006] In order to solve the above technical problems, the first aspect of the embodiment of the present application provides a child lock control circuit of an electronic cigarette, comprising:

[0007] A first state detection module and a second state detection module;

[0008] A first child lock module, comprising a first timing unit, a first counting unit and a first timing and counting judgment unit, wherein the first timing unit and the first counting unit are both electrically connected to the first state detection module, and the first timing and counting judgment unit is electrically connected to the first timing unit and the first counting unit respectively;

[0009] a second child lock module, electrically connected to the second state detection module;

[0010] a switch control module, which is electrically connected to the first child lock module and the second child lock module respectively;

[0011] A power MOS tube, whose control end is electrically connected to the switch control module; the power MOS tube is used to be connected in series with the heating element to form a heating branch, and the two ends of the heating branch are used to be electrically connected to the positive and negative electrodes of the battery respectively;

[0012] Among them, the first child lock module is used to generate a first child lock signal to make the electronic cigarette enter the first child lock state, and the second child lock module is used to generate a second child lock signal to make the electronic cigarette enter the second child lock state. When the electronic cigarette enters the second child lock state, the first timing unit and the first counting unit receive a first reset signal to stop timing and reset to zero in the first timing unit, and stop counting and reset to zero in the first counting unit.

[0013] Optionally, the child lock control circuit further includes a trigger, one input end of the trigger is electrically connected to the first timing counting judgment unit, another input end of the trigger is electrically connected to the second child lock module, the output end of the trigger is electrically connected to the switch control module, and the first timing unit and the first counting unit are both electrically connected to the output end of the trigger;

[0014] The second child lock module is used to generate a second child lock signal that causes the electronic cigarette to enter a second child lock state, the trigger receives the second child lock signal and outputs a first reset signal, the first timing unit receives the first reset signal to stop the first timing unit from timing and reset it to zero, and the first counting unit receives the first reset signal to stop the first counting unit from counting and reset it to zero.

[0015] Optionally, the first timing unit and the first counting unit are both electrically connected to the switch control module;

[0016] The second child lock module is used to generate a second child lock signal that causes the electronic cigarette to enter a second child lock state. The switch control module generates a first reset signal corresponding to the second child lock signal. The first timing unit receives the first reset signal to stop the first timing unit from timing and reset it to zero. The first counting unit receives the first reset signal to stop the first counting unit from counting and reset it to zero.

[0017] Optionally, the first timing unit and the first counting unit are both electrically connected to the output end of the second child lock module;

[0018] The second child lock module generates a first reset signal, the first timing unit receives the first reset signal to stop the first timing unit from counting and reset to zero, and the first counting unit receives the first reset signal to stop the first counting unit from counting and reset to zero.

[0019] Optionally, the first timing unit and the first counting unit operate in both the first child lock state and the second child lock state.

[0020] Optionally, the first child lock state is a child lock locked state, and the second child lock state is a child lock unlocked state; or, the first child lock state is a child lock unlocked state, and the second child lock state is a child lock locked state;

[0021] Wherein, in the child lock locked state, the power MOS tube remains disconnected and cut off, and in the child lock unlocked state, when the electronic cigarette is in the inhalation state, the power MOS tube is continuously turned on or intermittently turned on.

[0022] Optionally, the second child lock module includes a second timing unit, a second counting unit and a second timing and counting judgment unit, wherein the second timing unit and the second counting unit are both electrically connected to the second state detection module, and the second timing and counting judgment unit is electrically connected to the second timing unit and the second counting unit, respectively. When the electronic cigarette enters the first child lock state, the second timing unit and the second counting unit receive a second reset signal to stop timing and reset to zero, and the second counting unit stops counting and reset to zero.

[0023] Optionally, the first state detection module includes a charging management module, a suction and puff detection module or a cigarette cartridge detection module; the second state detection module includes a suction and puff detection module, a cigarette cartridge detection module or a charging management module.

[0024] Optionally, the child lock control circuit further includes a third timing unit and a third duration judgment unit, wherein the third timing unit is electrically connected to the first state detection module, the third duration judgment unit is electrically connected to the third timing unit, the output end of the third duration judgment unit is electrically connected to the first timing unit and the first counting unit respectively, the third duration judgment unit is used to generate a trigger valid signal according to the timing duration of the third timing unit, the first timing unit receives the trigger valid signal to start timing, and the first counting unit receives the trigger valid signal to start counting; or,

[0025] The child lock control circuit also includes a third timing unit and a third duration judgment unit, wherein the third timing unit and the first timing unit are respectively electrically connected to the first state detection module, the third duration judgment unit is electrically connected to the third timing unit, and the output end of the third duration judgment unit is electrically connected to the first counting unit, the third duration judgment unit is used to generate a trigger valid signal according to the timing duration of the third timing unit, and the first counting unit starts counting after receiving the trigger valid signal.

[0026] Optionally, the child lock control circuit includes a fourth timing unit and a fourth duration judgment unit, the fourth timing unit is electrically connected to the first state detection module and the third duration judgment unit, respectively, the fourth duration judgment unit is electrically connected to the fourth timing unit and the third timing unit, respectively, and the third timing unit is also electrically connected to the first state detection module and the third duration judgment unit; according to the signal of the first state detection module and the trigger valid signal of the third duration judgment unit, the fourth timing unit starts timing and the third timing unit enters a locked state, and the fourth duration judgment unit generates an unlocking signal to make the third timing unit enter an unlocked state according to the timing duration of the fourth timing unit; or,

[0027] The child lock control circuit includes a fourth timing unit and a fourth duration judgment unit. The fourth timing unit is electrically connected to the first state detection module and the third duration judgment unit, respectively. The fourth duration judgment unit is electrically connected to the fourth timing unit, the third timing unit and the first counting unit, respectively. The first counting unit is also electrically connected to the first state detection module and the third duration judgment unit. According to the signal of the first state detection module and the trigger valid signal of the third duration judgment unit, the fourth timing unit starts timing and the first counting unit enters a locked state. The fourth duration judgment unit generates an unlocking signal for causing the first counting unit to enter an unlocking state and a reset signal for resetting the first timing unit according to the timing duration of the fourth timing unit.

[0028] Optionally, the first state detection module and the second state detection module are the same state detection module; or,

[0029] The child lock control circuit is located on the same chip; or,

[0030] The circuits of the child lock control circuit except the first state detection module or the second state detection module are located on the same chip.

[0031] A second aspect of the embodiment of the present application provides an electronic cigarette, comprising:

[0032] The child lock control circuit of the electronic cigarette mentioned above;

[0033] A heating element, which is connected in series with the power MOS tube of the child lock control circuit to form a heating branch;

[0034] The positive and negative electrodes of the battery are electrically connected to the two ends of the heating branch circuit.

[0035] A third aspect of the embodiment of the present application provides a child lock control method for an electronic cigarette, comprising:

[0036] The second child lock module generates a second child lock signal that causes the electronic cigarette to enter a second child lock state;

[0037] Trigger output of a first reset signal;

[0038] The first timing unit and the first counting unit both receive the first reset signal, the first timing unit stops timing and resets to zero, and the first counting unit stops counting and resets to zero;

[0039] Obtain information that the electronic cigarette enters the first state;

[0040] Triggering the first counting unit to count and triggering the first timing unit to time;

[0041] Determine whether the number counted within a first preset time period is greater than or equal to a first preset number, wherein the first preset number is greater than or equal to 2;

[0042] If the judgment result is yes, the electronic cigarette is controlled to enter the first child lock state.

[0043] The embodiments of the present application have at least the following advantages: even if the first timing unit is timing in the first child lock state, the first counting unit retains the count value, when the electronic cigarette enters the second child lock state, the first timing unit and the first counting unit will both receive the first reset signal, the first timing unit stops timing and is reset to zero, and the first counting unit stops counting and is reset to zero, the previous timing and counting will be cleared when entering the second child lock state, and will not affect the triggering of the electronic cigarette to enter the first child lock state, and the user will not return to the first child lock state if the trigger action is performed less than expected, thereby not causing trouble for the user during operation, meeting the user's operational expectations, and at the same time, the user will not mistakenly believe that the electronic cigarette is damaged, and will not cause damage to the brand of the electronic cigarette company. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 This is a circuit module diagram of an electronic cigarette according to an embodiment of the present application;

[0046] Figure 2 is a circuit module diagram of a child lock control circuit according to an embodiment of the present application;

[0047] Figure 3 is a circuit module diagram of a child lock control circuit according to another embodiment of the present application;

[0048] Figure 4 1 is a flowchart of a child lock control method according to an embodiment of the present application;

[0049] Figure Number:

[0050] 110-battery; 120-heating element; 130-airflow sensor; 140-charging interface; BAT-power supply terminal; GND-power ground terminal; AT-atomization terminal; SW-airflow detection terminal; CD-charging terminal;

[0051] 200-child lock control circuit; 210-first child lock module; 211-first timing unit; 212-first counting unit; 213-first timing counting judgment unit; 220-second child lock module; 221-second timing unit; 222-second counting unit; 223-second timing counting judgment unit; 231-third timing unit; 232-third duration judgment unit; 240-trigger; 250-switch control module; 260-charging management module; 270-suction and blowing detection module; 281-fourth timing unit; 282-fourth duration judgment unit; M-power MOS tube. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] The terms "including" and "having" and any variations thereof appearing in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. In addition, the terms "first", "second" and "third" are used to distinguish different objects, rather than to describe a specific order. The electrical connection of this application includes direct electrical connection and indirect electrical connection. Indirect electrical connection means that other electronic components, unit modules, pins, etc. may also exist between the two components of the electrical connection. The XX end mentioned in this application may be an actual terminal, or it may not be an actual terminal, for example, only one end of a component or one end of a wire. The three situations mentioned and / or included in this application, such as A and / or B, include the three situations of A, B, A and B.

[0054] This application embodiment provides an electronic cigarette, see Figure 1 , the electronic cigarette includes a battery 110, a heating element 120 and a child lock control circuit 200. Among them, the child lock control circuit 200 includes a power MOS tube M, which is connected in series with the heating element 120 to form a heating branch, and the two ends of the heating branch are electrically connected to the positive and negative electrodes of the battery 110. In this embodiment, the first end of the power MOS tube M is electrically connected to the positive electrode of the battery 110, the second end of the power MOS tube M is electrically connected to the first end of the heating element 120, and the second end of the heating element 120 is electrically connected to the negative electrode of the battery 110. In other embodiments of the present application, the second end of the power MOS tube M is electrically connected to the negative electrode of the battery 110, the first end of the power MOS tube M is electrically connected to the second end of the heating element 120, and the first end of the heating element 120 is electrically connected to the positive electrode of the battery 110. In this embodiment, the power MOS tube M is a PMOS tube. However, the present application is not limited to this. In other embodiments of the present application, the power MOS tube M can also be an NMOS tube. In this embodiment, the battery 110 is, for example, a rechargeable battery 110 such as a lithium battery 110, a nickel-cadmium battery 110, a nickel-metal hydride battery 110, and the heating element 120 is, for example, a heating wire, a heating wire, a ceramic seat containing a heating wire or a heating wire, or other conventional heating elements 120.

[0055] In this embodiment, the child lock control circuit 200 further includes a first state detection module, a second state detection module, a first child lock module 210 , a second child lock module 220 , and a switch control module 250 .

[0056] In this embodiment, the first state detection module detects whether the electronic cigarette is in the first state, and the first state is, for example, a charging state, a suction state, a blowing state, a non-suction and blowing state, a cartridge insertion state, etc. This embodiment is described by taking the first state detection module detecting whether the electronic cigarette is in the charging state as an example. In this embodiment, the first state detection module is a charging management module 260, and the charging management module 260 is electrically connected to the charging interface 140, and the charging interface 140 is, for example, a conventional interface such as a Type-C interface, a Lightning interface, and a Micro USB interface. When the electronic cigarette is connected to an external power supply through the charging interface 140 and the charger, the charging management module 260 recognizes that the electronic cigarette is in a charging state, and the charging management module 260 outputs a charging signal, and the charging signal is, for example, a high-level signal; when the electronic cigarette is not connected to an external power supply, the charging management module 260 outputs a non-charging signal, and the non-charging signal is, for example, a low-level signal. The embodiment of the present application utilizes the original charging state detection, suction state detection, blowing state detection, non-suction and blowing state detection, and cartridge insertion state detection of the electronic cigarette, and can effectively trigger the first child lock state without adding Bluetooth / NFC and other designs and mechanical structures, thereby reducing the hardware cost of the electronic cigarette entering the first child lock state, and solving the technical problem of the high cost of the electronic cigarette entering the first child lock state in the prior art. In addition, in other embodiments of the present application, the first state detection module can also be a suction and blowing detection module 270 or a cartridge detection module, and the cartridge detection module is used to detect whether the detachable cartridge is loaded on the cigarette rod. In addition, in other embodiments of the present application, if the cost is not considered, the first state detection module can also be a touch detection module, a key detection module, a fingerprint detection module, etc.

[0057] In this embodiment, the second state detection module detects whether the electronic cigarette is in the second state. Generally speaking, the action that triggers the second state is different from the action that triggers the first state. The second state is, for example, a suction state, a blowing state, a cartridge insertion state, a charging state, etc. This embodiment is described by taking the second state detection module detecting whether the electronic cigarette is sucking as an example. In this embodiment, the second state detection module is a suction and blowing detection module 270. A specific implementation of the suction and blowing detection module 270 can be found in the applicant's prior patent application CN202210500141.4, which is also introduced into this application, or the suction and blowing detection module 270 is other conventional suction and blowing detection modules 270 in the field. In this embodiment, the suction and blowing detection module 270 is electrically connected to the airflow sensor 130, and the airflow sensor 130 is, for example, a MEMS sensor or a microphone. In this embodiment, when the user inhales or blows, airflow is generated inside the electronic cigarette, and the capacitance value, frequency value, etc. of the airflow sensor 130 will change due to the airflow. The suction and blowing detection module 270 can detect the change of the airflow sensor 130, thereby correspondingly outputting an inhalation signal or a blowing signal. When the electronic cigarette is not inhaled or blown, no airflow is generated inside the electronic cigarette, and the airflow sensor 130 will not change. The suction and blowing detection module 270 detects that the airflow sensor 130 has not changed, thereby outputting a no-inhalation and blowing signal. In this embodiment, when the user inhales the electronic cigarette, the suction and blowing detection module 270 identifies that the electronic cigarette is in the suction state, and the suction and blowing detection module 270 outputs an inhalation signal. When the user blows, the suction and blowing detection module 270 identifies that the electronic cigarette is in the blowing state, and the suction and blowing detection module 270 outputs a blowing signal. When the user neither blows nor inhales, the suction and blowing detection module 270 identifies that the electronic cigarette is in the no-inhalation and blowing state, and the suction and blowing detection module 270 outputs a no-inhalation and blowing signal. In this embodiment, the blowing signal and the inhalation signal can be a single signal or a combined signal. In addition, in other embodiments of the present application, the first state detection module can also be a suction and blowing detection module 270, in which case the first state detection module and the second state detection module are the same state detection module, and the first state detection module can be used to detect the blowing action to trigger the entry into the first child lock state. The embodiment of the present application utilizes the original suction state detection, blowing state detection, cartridge insertion state detection, and charging state detection of the electronic cigarette, and can effectively trigger the entry into the second child lock state without adding Bluetooth / NFC and other designs and mechanical structures, thereby reducing the hardware cost of the electronic cigarette entering the second child lock state, and solving the technical problem of the high cost of the electronic cigarette entering the second child lock state in the prior art. In addition, in other embodiments of the present application, the second state detection module can also be a cartridge detection module or a charging management module 260. In addition, in other embodiments of the present application, if the cost is not considered, the second state detection module can also be a touch detection module, a key detection module, a fingerprint detection module, etc.

[0058] In this embodiment, the first child lock module 210 is electrically connected to the first state detection module. Specifically, the first child lock module 210 includes a first timing unit 211, a first counting unit 212 and a first timing and counting judgment unit 213, wherein the first timing unit 211 and the first counting unit 212 are both electrically connected to the first state detection module, and the first timing and counting judgment unit 213 is electrically connected to the first timing unit 211 and the first counting unit 212 respectively. In this embodiment, the first timing unit 211 and the first counting unit 212 are triggered to start timing and counting according to the output signal of the first state detection module, for example, the charging signal triggers the start of timing and counting. When the first timing and counting judgment unit 213 determines that the number counted within the first preset time is greater than or equal to the first preset number, the first timing and counting judgment unit 213 generates a first child lock signal, and then the electronic cigarette enters the first child lock state; when the first timing and counting judgment unit 213 determines that the number counted within the first preset time is less than the first preset number, the electronic cigarette maintains the original child lock state unchanged. In this embodiment, when the first timing unit 211 reaches the first preset time length, the first timing unit 211 stops timing and is reset to zero, and the first counting unit 212 stops counting and is reset to zero; and when the number counted within the first preset time length is greater than or equal to the first preset number, the first timing unit 211 stops timing and is reset to zero, and the first counting unit 212 stops counting and is reset to zero.

[0059] In this embodiment, the second child lock module 220 is electrically connected to the second state detection module. The second child lock module 220 is used to generate a second child lock signal according to the output signal of the second state detection module. The second child lock signal is used to make the electronic cigarette enter the second child lock state.

[0060] In this embodiment, the switch control module 250 is electrically connected to the first child lock module 210 and the second child lock module 220 respectively, and the output end of the switch control module 250 is also electrically connected to the control end of the power MOS tube M. A conventional driving module may also be present between the switch control module 250 and the control end of the power MOS. In this embodiment, the switch control module 250 controls the power MOS tube M to turn off or on by outputting a high level signal or a low level signal. When the switch control module 250 outputs a high level signal, the power MOS tube M is turned off, and when the switch control module 250 outputs a low level signal, the power MOS tube M is turned on. In this embodiment, the switch control module 250 is also electrically connected to the suction and blowing detection module 270.

[0061] In this embodiment, the switch control module 250 is, for example, an AND gate, a NAND gate, an OR gate, a NOR gate or other logic gate circuits or their combination circuits. For example, the switch control module 250 includes a NAND gate. When the switch control module 250 receives a low-level signal from the first child lock module 210, the output end of the switch control module 250 directly outputs a high-level signal, and the power MOS tube M is cut off. When the switch control module 250 receives a high-level signal from the second child lock module 220, the output of the NAND gate is controlled by the suction and blowing detection module 270. When the suction and blowing detection module 270 determines that the user is inhaling the electronic cigarette, the switch control module 250 controls the power MOS tube M to be continuously turned on or intermittently turned on.

[0062] In this embodiment, the first child lock state is the child lock locked state, which corresponds to the child lock protection function. When the electronic cigarette is in the child lock locked state, regardless of whether the user smokes the electronic cigarette, the switch control module 250 controls the power MOS tube M to remain disconnected and cut off. For example, the first child lock module 210 continuously outputs a low level signal, the switch control module 250 continuously outputs a high level signal, and the power MOS tube M remains disconnected and cut off, so that the heating element 120 will not be heated, and then the smoke oil will not be atomized for the user to smoke, that is, even if the user smokes the electronic cigarette, there will be no smoke. The second child lock state is the child lock unlocked state, which corresponds to the release of the child lock protection function. At this time, when the user smokes the electronic cigarette, the switch control module 250 controls the power MOS tube M to be continuously turned on or intermittently turned on. Intermittent conduction means that the switch control module 250 outputs a square wave signal through a PWM mode or a PFM mode, and adjusts the duty cycle of the square wave signal to control the output power. For example, the second child lock module 220 continuously outputs a high level signal, and the switch control module 250 is controlled by the suction and blowing detection module 270. The present application is not limited to this. In other embodiments of the present application, the first child lock state can also be a child lock unlocked state, and the second child lock state can be a child lock locked state.

[0063] In this embodiment, when the electronic cigarette enters the second child lock state, the first timing unit 211 and the first counting unit 212 receive the first reset signal, that is, when the electronic cigarette is in the first child lock state, regardless of whether the first timing unit 211 starts timing and whether the first counting unit 212 has counted, when the electronic cigarette enters the second child lock state from the first child lock state, at this time, the first timing unit 211 and the first counting unit 212 will receive the first reset signal, the first timing unit 211 will be reset, that is, the first timing unit 211 stops timing and is reset to zero, and the first counting unit 212 will be reset, that is, the first counting unit 212 The counting will stop and be reset to zero. After that, the user charges the electronic cigarette and the electronic cigarette enters the charging state. Since the first timing unit 211 has not started timing before, and the first counting unit 212 has not started counting before, the first timing unit 211 is triggered to start timing from 0, and the first counting unit 212 is triggered to start counting from 0, and when the number of charging and plugging within the first preset time is greater than or equal to the first preset number, the first timing and counting judgment unit 213 outputs the first child lock signal to the switch control module 250, and the switch control module 250 continues to output a high level signal, so that the power MOS tube M remains turned off, and the electronic cigarette enters the first child lock state. Therefore, the following situation will not occur in the present application: the first timing unit 211 and the first counting unit 212 are always working, and in the child lock locked state (the child lock unlocked state is similar and will not be repeated), when the user normally plugs in and unplugs the charger connector (or inhales or blows), the first timing unit 211 and the first counting unit 212 will be triggered to start timing and counting. At this time, when the user normally operates the electronic cigarette to enter the child lock unlocked state, the first timing unit 211 is still timing, and the count value of the first counting unit 212 will be retained, so that in the child lock unlocked state, the first child lock module 210 may receive fewer charging plug-in times than the first preset number and enter the child lock locked state, which will cause logical errors, cause trouble to the user's use, and easily cause user misoperation. For example, in the child lock locked state, the user charges the electronic cigarette normally, and the charger connector is inserted into the charging interface 140. At this time, the first timing unit 211 starts timing, and the first counting unit 212 counts to 1. After that, when the user operates normally to put the electronic cigarette into the child lock unlocked state, the first timing unit 211 is still timing. Thereafter, when the electronic cigarette is plugged in and unplugged for charging twice for various reasons, the first preset number has been met (assuming that the first preset number is 3 times, assuming that it is still within the first preset time length), the first timing and counting judgment unit 213 outputs the first child lock signal, so that the electronic cigarette returns to the child lock locked state, which will cause logical confusion during user use, which does not meet the user's expectations, will cause trouble to the user's operation, and is easy to cause user misoperation.

[0064] In this embodiment, the child lock control circuit 200 further includes a trigger 240, which is, for example, an SR trigger 240 or other conventional triggers 240, one input end of the trigger 240 is electrically connected to the output end of the first child lock module 210, the other input end of the trigger 240 is electrically connected to the output end of the second child lock module 220, the output end of the trigger 240 is electrically connected to the switch control module 250, and the output end of the trigger 240 is also electrically connected to the first timing unit 211 and the first counting unit 212. When the second child lock module 220 generates a second child lock signal that causes the electronic cigarette to enter the second child lock state, the trigger 240 receives the second child lock signal and outputs a second signal, which is a high level signal, wherein the edge signal of the trigger 240 from the first signal (described later) to the second signal is the first reset signal, and the electronic cigarette enters the second child lock state, and at the same time, the first timing unit 211 and the first counting unit 212 receive the first reset signal, the first timing unit 211 stops timing and resets to zero, and the first counting unit 212 stops counting and resets to zero. How the first timing unit 211 and the first counting unit 212 are reset after receiving the first reset signal is a conventional technique in the art and will not be described in detail herein.

[0065] In this embodiment, the output end of the trigger 240 is also electrically connected to the second child lock module 220. When the first child lock module 210 outputs the first child lock signal that causes the electronic cigarette to enter the first child lock state, the trigger 240 continuously outputs a low level signal to the switch control module 250 and the second child lock module 220. This low level signal is the first signal, and the edge signal from the second signal to the first signal is the second reset signal. The electronic cigarette enters the first child lock state, and the second child lock module 220 receives the second reset signal.

[0066] In addition, in other embodiments of the present application, the first timing unit 211 and the first counting unit 212 are both electrically connected to the switch control module 250, and the second child lock module 220 is electrically connected to the switch control module 250. When the second child lock module 220 outputs a second child lock signal that causes the electronic cigarette to enter the second child lock state, the trigger 240 continuously outputs a high level signal corresponding to the second child lock signal, and the switch control module 250 continuously outputs a high level signal to the first timing unit 211 and the first counting unit 212. The high level signal output by the switch control module 250 is the second signal, and the edge signal output by the switch control module 250 from the low level signal (first signal) to the high level signal (second signal) is the first reset signal. The electronic cigarette enters the second child lock state, and the switch control module 250 is controlled by the suction and blowing detection module 270. At the same time, the first timing unit 211 and the first counting unit 212 receive the first reset signal. The first timing unit 211 stops timing and resets to zero, and the first counting unit 212 stops counting and resets to zero; when the first child lock module 210 outputs the first child lock signal that causes the electronic cigarette to enter the first child lock state, the trigger 240 continuously outputs a low-level signal corresponding to the first child lock signal, and the switch control module 250 also continuously outputs a low-level signal to the first timing unit 211 and the first counting unit 212. The low-level signal output by the switch control module 250 is the first signal, and the edge signal output by the switch control module 250 from the high-level signal (second signal) to the low-level signal (first signal) is the second reset signal, and the electronic cigarette enters the first child lock state, and the second child lock module 220 receives the second reset signal. For example, the switch control module 250 also includes a reset unit, and the reset unit includes, for example, two NOT gates, the two NOT gates are connected in series, the input end of one of the NOT gates is electrically connected to the output end of the trigger 240, and the output end of the other NOT gate is electrically connected to the first timing unit 211 and the first counting unit 212 respectively. In addition, in other embodiments of the present application, the reset signal can be reversed, the first reset signal can also be an edge signal that changes from a high level signal to a low level signal, and the second reset signal can also be an edge signal that changes from a low level signal to a high level signal.

[0067] In addition, in other embodiments of the present application, similarly, the first timing unit 211 and the first counting unit 212 are both electrically connected to the output end of the second child lock module 220, and the second child lock module 220 outputs a second child lock signal that causes the electronic cigarette to enter the second child lock state. The second child lock module 220, for example, outputs an edge signal that changes from a low-level signal to a high-level signal as a first reset signal. In addition, in other embodiments of the present application, the first reset signal may be a falling edge signal, and the first timing unit 211 receives the first reset signal, the first timing unit 211 stops timing and is reset to zero, and the first counting unit 212 receives the first reset signal, and the first counting unit 212 stops counting and is reset to zero.

[0068] In this embodiment, the second child lock module 220 is similar to the first child lock module 210, and the second child lock module 220 includes a second timing unit 221, a second counting unit 222, and a second timing and counting judgment unit 223. Among them, the second timing unit 221 and the second counting unit 222 are both electrically connected to the second state detection module, and the second timing and counting judgment unit 223 is electrically connected to the second timing unit 221 and the second counting unit 222 respectively. When the electronic cigarette enters the first child lock state, the second timing unit 221 and the second counting unit 222 are electrically connected to the second state detection module. 222 A second reset signal is received to stop the second timing unit 221 from timing and reset to zero, and the second counting unit 222 from counting and reset to zero. In this embodiment, when the electronic cigarette is in the first child lock state, when the user draws the electronic cigarette, the second state detection module outputs an inhalation signal to the second timing unit 221 and the second counting unit 222, the second timing unit 221 starts timing, the second counting unit 222 starts counting, and the second timing and counting judgment unit 223 is used to judge whether the count of the second counting unit 222 is greater than or equal to the second preset number within the second preset time length. When the second timing and counting judgment unit 223 judges that the count of the second counting unit 222 is greater than or equal to the second preset number within the second preset time length, the second timing and counting judgment unit 223 outputs a second child lock signal to the trigger 240, and the trigger 240 outputs a second signal to the switch control unit. The specific function of the second child lock module 220 can refer to the first child lock module 210, which will not be repeated here. In addition, in other embodiments of the present application, when the second child lock state is the child lock locked state, the second child lock module 220 may not include the second counting unit 222, and the second timing counting judgment unit 223 is a second duration judgment unit. At this time, the electronic cigarette determines whether to enter the second child lock state by the placement time.

[0069] In this embodiment, regardless of whether the electronic cigarette is in the first child lock state or the second child lock state, the first timing unit 211, the first counting unit 212, the second timing unit 221, and the second counting unit 222 all work. When a trigger signal is received, the first timing unit 211 and the second timing unit 221 start timing correspondingly, and the first counting unit 212 and the second counting unit 222 start counting correspondingly. In this embodiment, the second timing unit 221, the second counting unit 222, and the second timing and counting judgment unit 223 can be implemented by conventional timers and counters, that is, although they are divided into three units according to function in the foregoing, they can actually be implemented by two circuit modules, which also belongs to the scope of this application. In this embodiment, the first timing unit 211, the first counting unit 212, and the first timing and counting judgment unit 213 can be implemented by conventional timers and counters, that is, although they are divided into three units according to function in the foregoing, they can actually be implemented by two circuit modules, which also belongs to the scope of this application.

[0070] The inventors of the present application discovered during actual testing that: the contact between the charger connector and the charging interface 140 is not stable, or the charger connector and the charging interface 140 are worn out or jittered due to long-term use, which may cause the charging management module 260 to detect multiple charging signals when the charger connector and the charging interface 140 are plugged in once, resulting in the electronic cigarette being mistakenly triggered to enter the first child lock state when the charger connector and the charging interface 140 are plugged in once, causing trouble for the user. Similarly, other triggering methods, such as the suction method (air disturbance caused by environmental factors, temperature factors, etc.), the blowing method (air disturbance caused by environmental factors, temperature factors, etc.), and the cartridge plugging method (unstable contact, wear and tear, etc.) also have similar problems. In order to solve this problem, in this embodiment, the child lock control circuit 200 further includes a third timing unit 231 and a third duration judgment unit 232, wherein the third timing unit 231 is electrically connected to the first state detection module, the third duration judgment unit 232 is electrically connected to the third timing unit 231, and the output end of the third duration judgment unit 232 is electrically connected to the first timing unit 211 and the first counting unit 212, respectively, and the third duration judgment unit 232 is used to generate a trigger valid signal according to the timing duration of the third timing unit 231. In this embodiment, the third timing unit 231 and the third duration judgment unit 232 can be implemented by a conventional timer, that is, although they are divided into two units according to function in the foregoing, they can actually be implemented by a circuit module, which also belongs to the scope of this application.

[0071] In this embodiment, when the electronic cigarette enters the charging state, the third timing unit 231 starts timing. When the third duration judgment unit 232 judges that the timing of the third timing unit 231 is greater than or equal to the third preset duration, that is, the duration of the charging state is greater than or equal to the third preset duration, the third duration judgment unit 232 outputs a trigger valid signal to the first timing unit 211 and the first counting unit 212, and the first timing unit 211 is triggered to start timing, and the first counting unit 212 is triggered to start counting, and thereafter, as long as the first timing unit 211 is not reset, the first timing unit 211 ignores the output signal of the third duration judgment unit 232; and each time the charging is performed, the duration of the charging signal is detected and judged, and the first counting unit 212 will count only when the duration of the charging signal is greater than or equal to the third preset duration. Thereafter, the third timing unit 231 is reset, that is, the timing is stopped and reset to zero. Within the first preset duration, if the third duration judgment unit 232 determines that the timing of the third timing unit 231 is greater than or equal to the third preset duration next time, the first timing unit 211 will ignore the signal thereafter, and at the same time, the first counting unit 212 counts plus 1, that is, the subsequent counts will detect and judge the duration of the charging signal, and only when the charging duration is greater than or equal to the third preset duration will it be counted. In this embodiment, the third timing unit 231 is triggered to start timing by a rising edge signal (edge ​​signal), a falling edge signal (edge ​​signal), a high level signal (level signal) or a low level signal (level signal), so that when the first state detection module changes from an uncharged signal to a charging signal, the third timing unit 231 is triggered to start timing.

[0072] In addition, the first timing unit 211 may not be triggered to start timing by receiving a trigger valid signal. In other embodiments of the present application, the first timing unit 211 is electrically connected to the first state detection module, and the first timing unit 211 obtains information that the electronic cigarette enters the first state. The first timing unit 211 also performs timing, that is, the first timing unit 211 and the third timing unit 231 perform timing at about the same time. In this embodiment, the first timing unit 211 performs timing by edge signal triggering, and the third timing unit 231 performs timing by level signal triggering or edge signal triggering.

[0073] In this embodiment, when the third duration judgment unit 232 judges that the timing of the third timing unit 231 is less than the third preset duration, that is, the duration in the charging state is less than the third preset duration, the third duration judgment unit 232 does not output a trigger valid signal, for example, outputs a trigger invalid signal, and the trigger invalid signal does not trigger the subsequent circuit timing and counting. In this embodiment, when the duration of the charging signal is very short and the charging signal quickly changes back to an uncharged signal, the third timing unit 231 stops timing and the timing duration is set to zero, that is, the third timing unit 231 is reset, and at the same time, the third duration judgment unit 232 still outputs a trigger invalid signal. In this embodiment, the third preset duration is, for example, 10ms, 20ms, 30ms, 40ms, 50ms, 60ms, 70ms, 80ms, 90ms, 100ms, etc. The problem mentioned above is that multiple charging signals will appear during one charge. Generally speaking, the duration of the previous charging signal will be very short, less than 10ms. The charging signal will be greater than or equal to 10ms and less than or equal to 100ms when the connection is stable. This embodiment uses this method to distinguish whether it is effective charging or invalid charging due to instability, loss, etc. When the duration of the charging signal is very short and the charging signal quickly changes back to an uncharged signal, the third timing unit 231 is reset. At the same time, the third duration judgment unit 232 does not output a trigger valid signal to the first timing unit 211 and the first counting unit 212, so that the first timing unit 211 and the first counting unit 212 are not triggered, and thus will not be triggered by mistake, and the situation where the charger connector is inserted into the charging interface 140 once will not trigger the electronic cigarette to enter the first child lock state.

[0074] This embodiment also detects the interval between the first states to prevent the signal corresponding to the first state from jittering and causing miscounting. Specifically, in this embodiment, the child lock control circuit includes a fourth timing unit 281 and a fourth duration judgment unit 282, the fourth timing unit 281 is electrically connected to the first state detection module and the third duration judgment unit 232, the fourth duration judgment unit 282 is electrically connected to the fourth timing unit 281 and the third timing unit 231, and the third timing unit 231 is also electrically connected to the first state detection module and the third duration judgment unit 232. When the third duration judgment unit 232 outputs a trigger valid signal, the fourth timing unit 281 obtains information that the electronic cigarette enters a non-first state from the first state after obtaining the trigger valid signal, such as information that the electronic cigarette enters a non-first state from the charging state (uncharged state), such as information that the electronic cigarette enters a non-first state from the charging state, such as information that the electronic cigarette enters a low-level signal from a high-level signal. The fourth timing unit 281 is triggered to start timing. At the same time, the third timing unit 231 also obtains information that the electronic cigarette enters a non-first state from the first state after obtaining the trigger valid signal. The third timing unit 231 is locked, that is, it enters a locked state. After the third timing unit 231 is locked, it will not be triggered to start timing, and the timing of the third timing unit 291 is 0 at this time. Only when the third timing unit 231 is unlocked and in the unlocked state will it count the duration of the first state. In this embodiment, after the fourth timing unit 281 starts timing, the fourth timing unit 281 has been timing, and the fourth duration judgment unit 282 judges whether the timing duration of the fourth timing unit 281 is greater than or equal to the fourth preset duration. The fourth preset duration is, for example, 10ms-100ms, such as 10ms, 20ms, 30ms, 40ms, 50ms, 60ms, 70ms, 80ms, 90ms, 100ms, etc., preferably 20ms. When the fourth duration judgment unit 282 judges that the timing of the fourth timing unit 281 reaches the fourth preset duration, the fourth timing unit 281 will stop timing and set to zero, that is, the fourth timing unit 281 is reset. At the same time, the fourth duration judgment unit 282 outputs an unlocking signal to the third timing unit 231, the third timing unit 231 is unlocked, and the third timing unit 231 is in an unlocked state. Thereafter, the third timing unit 231 obtains information that the electronic cigarette enters the first state, and the third timing unit 231 can perform timing. In this embodiment, when the fourth timing unit 281 does not receive a trigger valid signal, even if the fourth timing unit 281 obtains information that the electronic cigarette enters a non-first state from the first state, the fourth timing unit 281 will not trigger the start of timing.This embodiment judges the duration of the first state, and counts only when it is greater than the third preset duration. At the same time, after counting once, when the electronic cigarette changes from the first state to the non-first state, the fourth timing unit 281 counts, and only when the fourth timing unit 281 counts greater than or equal to the fourth preset duration, the third timing unit 231 can effectively count again, that is, after outputting the trigger valid signal, the third timing unit 231 can wait for at least the fourth preset duration before it can effectively count again. This setting can prevent the first state action from being misunderstood as several first state actions due to the jitter of the first state action, resulting in not meeting the user's expectations. This setting of this embodiment improves the user experience and meets the user's expectations.

[0075] In order to prevent the signal jitter corresponding to the first state from causing miscounting, in other embodiments of the present application, see Figure 3The child lock control circuit includes a fourth timing unit 281 and a fourth duration judgment unit 282. The fourth timing unit 281 is electrically connected to the first state detection module and the third duration judgment unit 232 respectively. The fourth duration judgment unit 282 is electrically connected to the fourth timing unit 281, the third timing unit 231 and the first counting unit 212 respectively. The first counting unit 212 is also electrically connected to the first state detection module and the third duration judgment unit 232. When the third duration judgment unit 232 outputs a trigger valid signal, the fourth timing unit 281 obtains information that the electronic cigarette enters a non-first state from the first state after receiving the trigger valid signal, and the fourth timing unit 281 is triggered to start timing. At the same time, the first counting unit 212 also obtains information that the electronic cigarette enters a non-first state from the first state after obtaining the trigger valid signal. The first counting unit 212 is locked, that is, it enters a locked state. After the first counting unit 212 is locked, the count will not be increased even if the trigger valid signal is received again. That is, in the locked state, the first counting unit 212 maintains the original count value and does not increase the count value. Only after being unlocked and in the unlocked state, the first counting unit 212 receives a trigger valid signal, the count will be increased by one. In this embodiment, after the fourth timing unit 281 starts timing, the fourth timing unit 281 is always timing (even if it changes from a non-first state to a first state), and the fourth duration judgment unit 282 judges whether the timing duration of the fourth timing unit 281 is greater than or equal to the fourth preset duration. When the fourth duration judgment unit 282 judges that the timing of the fourth timing unit 281 reaches the fourth preset duration, the fourth timing unit 281 stops timing and is reset to zero, that is, the fourth timing unit 281 is reset. At the same time, the fourth duration judgment unit 282 outputs a reset signal to the third timing unit 231, and the timing of the third timing unit 231 is stopped and reset to zero, that is, it is reset. At the same time, the fourth duration judgment unit outputs an unlocking signal to the first counting unit 212, and the first counting unit 212 is unlocked from counting, and the first counting unit 212 enters an unlocking state. Thereafter, the first counting unit 212 obtains a trigger valid signal again, and the first counting unit 212 can perform a count plus one action. In this embodiment, when the fourth timing unit 281 does not receive a trigger valid signal, even if the fourth timing unit 281 obtains information that the electronic cigarette enters a non-first state from the first state, the fourth timing unit 281 will not trigger the start of timing.

[0076] In this embodiment, the first preset duration and the second preset duration are generally less than or equal to 5s, which is conducive to preventing false triggering. The first preset duration is, for example, 1s, 1.5s, 1.8s, 2s, 2.3s, 2.5s, 2.8s, 3s, 4s, 5s, etc., preferably 2s. In this embodiment, the first preset number and the second preset number are greater than or equal to 2, for example, 2, 3, 4, 5, 6, etc., preferably 3, and the first preset number and the second preset number are generally less than or equal to 6 times, which is convenient for user operation.

[0077] In this embodiment, the child lock control circuit 200 is located on the same chip, which is generally called a system control chip. However, the present application is not limited thereto. In other embodiments of the present application, the circuits of the child lock control circuit 200 other than the first state detection module or the second state detection module are located on the same chip.

[0078] Corresponding to the child lock control circuit 200 of the electronic cigarette in the above embodiment, Figure 4 A child lock control method for an electronic cigarette provided in an embodiment of the present application is shown. For ease of description, only the parts related to the embodiment of the present application are shown.

[0079] Please refer to Figure 2 and Figure 4 The embodiment of the present application provides a child lock control method for an electronic cigarette, comprising the following steps:

[0080] S11: The second child lock module 220 generates a second child lock signal that causes the electronic cigarette to enter a second child lock state;

[0081] S12: trigger output of the first reset signal;

[0082] S13: the first timing unit 211 and the first counting unit 212 both receive the first reset signal, the first timing unit 211 stops timing and resets to zero, and the first counting unit 212 stops counting and resets to zero;

[0083] S14: Obtaining information that the electronic cigarette enters the first state;

[0084] S15: triggering the first counting unit 212 to count and triggering the first timing unit 211 to count;

[0085] S16: Determine whether the number counted within the first preset time period is greater than or equal to a first preset number, wherein the first preset number is greater than or equal to 2;

[0086] S17: If the judgment result is yes, the electronic cigarette is controlled to enter the first child lock state.

[0087] It should be understood that those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0088] It should be understood that the "plurality" mentioned in this article refers to two or more. Those skilled in the art will easily think of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present application are indicated by the following claims.

[0089] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0090] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A child lock control circuit for an electronic cigarette, characterized in that: include: A first state detection module and a second state detection module; A first child lock module, comprising a first timing unit, a first counting unit and a first timing and counting judgment unit, wherein the first timing unit and the first counting unit are both electrically connected to the first state detection module, and the first timing and counting judgment unit is electrically connected to the first timing unit and the first counting unit respectively; a second child lock module, electrically connected to the second state detection module; a switch control module, which is electrically connected to the first child lock module and the second child lock module respectively; A power MOS tube, whose control end is electrically connected to the switch control module; the power MOS tube is used to be connected in series with the heating element to form a heating branch, and the two ends of the heating branch are used to be electrically connected to the positive and negative electrodes of the battery respectively; Among them, the first child lock module is used to generate a first child lock signal to make the electronic cigarette enter the first child lock state, and the second child lock module is used to generate a second child lock signal to make the electronic cigarette enter the second child lock state. When the electronic cigarette enters the second child lock state, the first timing unit and the first counting unit receive a first reset signal to stop timing and reset to zero in the first timing unit, and stop counting and reset to zero in the first counting unit.

2. The child lock control circuit according to claim 1, characterized in that: The child lock control circuit further includes a trigger, one input end of the trigger is electrically connected to the first timing counting judgment unit, another input end of the trigger is electrically connected to the second child lock module, an output end of the trigger is electrically connected to the switch control module, and the first timing unit and the first counting unit are both electrically connected to the output end of the trigger; The second child lock module is used to generate a second child lock signal that causes the electronic cigarette to enter a second child lock state, the trigger receives the second child lock signal and outputs a first reset signal, the first timing unit receives the first reset signal to stop the first timing unit from timing and reset it to zero, and the first counting unit receives the first reset signal to stop the first counting unit from counting and reset it to zero.

3. The child lock control circuit according to claim 1, characterized in that: The first timing unit and the first counting unit are both electrically connected to the switch control module; The second child lock module is used to generate a second child lock signal that causes the electronic cigarette to enter a second child lock state. The switch control module generates a first reset signal corresponding to the second child lock signal. The first timing unit receives the first reset signal to stop the first timing unit from timing and reset it to zero. The first counting unit receives the first reset signal to stop the first counting unit from counting and reset it to zero.

4. The child lock control circuit according to claim 1, characterized in that: The first timing unit and the first counting unit are both electrically connected to the output end of the second child lock module; The second child lock module generates a first reset signal, the first timing unit receives the first reset signal to stop the first timing unit from counting and reset to zero, and the first counting unit receives the first reset signal to stop the first counting unit from counting and reset to zero.

5. The child lock control circuit according to claim 1, characterized in that: The first timing unit and the first counting unit both work in the first child lock state and the second child lock state.

6. The child lock control circuit according to claim 1, characterized in that: The first child lock state is a child lock locked state, and the second child lock state is a child lock unlocked state; or, the first child lock state is a child lock unlocked state, and the second child lock state is a child lock locked state; Wherein, in the child lock locked state, the power MOS tube remains disconnected and cut off, and in the child lock unlocked state, when the electronic cigarette is in the inhalation state, the power MOS tube is continuously turned on or intermittently turned on.

7. The child lock control circuit according to claim 1, characterized in that: The second child lock module includes a second timing unit, a second counting unit and a second timing and counting judgment unit, wherein the second timing unit and the second counting unit are both electrically connected to the second state detection module, and the second timing and counting judgment unit is electrically connected to the second timing unit and the second counting unit respectively. When the electronic cigarette enters the first child lock state, the second timing unit and the second counting unit receive a second reset signal to stop timing and reset to zero in the second timing unit, and to stop counting and reset to zero in the second counting unit.

8. The child lock control circuit according to any one of claims 1 to 7, characterized in that: The first state detection module includes a charging management module, a puff detection module or a cartridge detection module; the second state detection module includes a puff detection module, a cartridge detection module or a charging management module; or The first state detection module and the second state detection module are the same state detection module; or, The child lock control circuit is located on the same chip; or, The circuits of the child lock control circuit except the first state detection module or the second state detection module are located on the same chip.

9. The child lock control circuit according to any one of claims 1 to 7, characterized in that: The child lock control circuit further includes a third timing unit and a third duration judgment unit, wherein the third timing unit is electrically connected to the first state detection module, the third duration judgment unit is electrically connected to the third timing unit, and the output end of the third duration judgment unit is electrically connected to the first timing unit and the first counting unit respectively, and the third duration judgment unit is used to generate a trigger valid signal according to the timing duration of the third timing unit, the first timing unit receives the trigger valid signal to start timing, and the first counting unit receives the trigger valid signal to start counting; or, The child lock control circuit also includes a third timing unit and a third duration judgment unit, wherein the third timing unit and the first timing unit are respectively electrically connected to the first state detection module, the third duration judgment unit is electrically connected to the third timing unit, and the output end of the third duration judgment unit is electrically connected to the first counting unit, the third duration judgment unit is used to generate a trigger valid signal according to the timing duration of the third timing unit, and the first counting unit starts counting after receiving the trigger valid signal.

10. The child lock control circuit according to claim 9, characterized in that: The child lock control circuit includes a fourth timing unit and a fourth duration judgment unit, the fourth timing unit is electrically connected to the first state detection module and the third duration judgment unit respectively, the fourth duration judgment unit is electrically connected to the fourth timing unit and the third timing unit respectively, and the third timing unit is also electrically connected to the first state detection module and the third duration judgment unit; according to the signal of the first state detection module and the trigger valid signal of the third duration judgment unit, the fourth timing unit starts timing and the third timing unit enters the locked state, and the fourth duration judgment unit generates an unlocking signal that causes the third timing unit to enter the unlocked state according to the timing duration of the fourth timing unit; or, The child lock control circuit includes a fourth timing unit and a fourth duration judgment unit. The fourth timing unit is electrically connected to the first state detection module and the third duration judgment unit, respectively. The fourth duration judgment unit is electrically connected to the fourth timing unit, the third timing unit and the first counting unit, respectively. The first counting unit is also electrically connected to the first state detection module and the third duration judgment unit. According to the signal of the first state detection module and the trigger valid signal of the third duration judgment unit, the fourth timing unit starts timing and the first counting unit enters a locked state. The fourth duration judgment unit generates an unlocking signal for causing the first counting unit to enter an unlocking state and a reset signal for resetting the first timing unit according to the timing duration of the fourth timing unit.

11. An electronic cigarette, characterized in that: include: The child lock control circuit of the electronic cigarette according to any one of claims 1 to 10; A heating element, which is connected in series with the power MOS tube of the child lock control circuit to form a heating branch; The positive and negative electrodes of the battery are electrically connected to the two ends of the heating branch circuit.

12. A child lock control method for an electronic cigarette, characterized in that: include: The second child lock module generates a second child lock signal that causes the electronic cigarette to enter a second child lock state; Trigger output of a first reset signal; The first timing unit and the first counting unit both receive the first reset signal, the first timing unit stops timing and resets to zero, and the first counting unit stops counting and resets to zero; Acquiring information that the electronic cigarette enters a first state, where the first state is different from a first child lock state and a second child lock state; Triggering the first counting unit to count and triggering the first timing unit to time; Determine whether the number counted within a first preset time period is greater than or equal to a first preset number, wherein the first preset number is greater than or equal to 2; If the judgment result is yes, the electronic cigarette is controlled to enter the first child lock state.

Images