CN112089096A

CN112089096A - Electronic cigarette, and cigarette cartridge and safety circuit used for electronic cigarette

Info

Publication number: CN112089096A
Application number: CN202011074503.5A
Authority: CN
Inventors: 宋利军; 宋朋亮
Original assignee: Xi'an Wenxian Semiconductor Technology Co ltd
Current assignee: Xi'an Wenxian Semiconductor Technology Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2020-12-18
Anticipated expiration: 2040-10-09
Also published as: CN112089096B

Abstract

The invention discloses an electronic cigarette, a cartridge for the electronic cigarette and a safety circuit. The cigarette rod comprises a positive driving electrode and a negative driving electrode, the cigarette cartridge comprises an atomizer, a first electrode, a second electrode and a safety circuit, and the safety circuit comprises an enabling control circuit and a control module; when the cigarette rod is connected with the cigarette cartridge, the positive driving electrode and the negative driving electrode are electrically connected with the first electrode and the second electrode, or are electrically connected with the second electrode and the first electrode; after the cigarette rod is connected with the cigarette cartridge, a signal transmission channel formed by connecting the first electrode or the second electrode with the positive driving electrode is used for transmitting signals between a controller and a control module in the cigarette rod to carry out key verification; the key is verified to be valid, and the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer; and if the key is invalid, the control module controls the enabling control circuit to disconnect the power supply loop of the atomizer. Therefore, the cigarette cartridge and the cigarette rod can be inserted at will, the same interface is reused, counterfeit and inferior cigarette cartridges are prevented, the structure is simple, and the electronic cigarette is compatible with the existing electronic cigarette.

Description

Electronic cigarette, and cigarette cartridge and safety circuit used for electronic cigarette

Technical Field

The invention relates to the technical field of electronic cigarettes, in particular to an electronic cigarette, a cigarette cartridge and a safety circuit for the electronic cigarette.

Background

In the prior art, the electronic cigarette is composed of a cigarette rod and a cigarette cartridge, the cigarette rod and the cigarette cartridge are used in a combined mode, the cigarette rod can be used for a long time, the cigarette cartridge is a disposable consumable, cigarette oil is arranged in the cigarette cartridge, and after the cigarette oil is consumed, the cigarette cartridge is discarded and is used by being combined with the cigarette rod through a new cigarette cartridge.

The interface between tobacco rod and the cigarette bullet includes mechanical interface and electrical interface, and electrical interface is mainly two electrodes to the cigarette bullet power supply, and among the prior art, after tobacco rod and cigarette bullet combine, the two directly can supply power and connect and can cooperate the use. This approach provides a chance for various counterfeit cartridges, thereby greatly encroaching upon the market share of regular cartridges.

To this, in order to realize that the cigarette bullet is anti-fake, increased the information communication interface between cigarette bullet and the tobacco rod in the electrical interface, generally including power connection end, ground connection link, signal connection end etc. carry out mutual authentication through this kind of information communication interface between cigarette bullet and the tobacco rod to it is not replaced by counterfeit product to have guaranteed the cigarette bullet. However, because the information communication interface is additionally arranged between the smoke cartridge and the smoke rod, the interface comprises a plurality of connecting ends, the electrical connection mode between the existing smoke cartridge and the smoke rod is changed, the hardware cost of the interface is increased, the physical structures of the smoke cartridge and the smoke rod are changed and become complex, the damage rate of the smoke cartridge and the smoke rod is increased when the smoke cartridge and the smoke rod are connected in an inserting mode, the universality is not strong, and the satisfaction degree of user consumption experience is reduced.

Disclosure of Invention

The invention mainly solves the technical problems of providing an electronic cigarette, a cartridge and a safety circuit for the electronic cigarette, and solving the technical means problems that the cartridge and a cigarette rod of the electronic cigarette in the prior art are lack of low cost, the interconnection structure between the cartridge and the cigarette rod is not changed, and mutual safety authentication can be carried out to prevent counterfeit products.

In order to solve the technical problem, the invention provides an electronic cigarette, which comprises a cigarette rod and a cigarette cartridge, wherein the cigarette rod comprises a positive driving electrode and a negative driving electrode, the cigarette cartridge comprises an atomizer, a first electrode, a second electrode and a safety circuit, and the safety circuit comprises an enabling control circuit and a control module, wherein the enabling control circuit is used for controlling the power supply circuit of the atomizer to be switched on or switched off; when the cigarette rod is correspondingly connected with the cigarette cartridge for use, the positive drive electrode and the negative drive electrode of the cigarette rod are correspondingly and respectively in electrical contact connection with the first electrode and the second electrode of the cigarette cartridge, or are correspondingly and respectively in electrical contact connection with the second electrode and the first electrode of the cigarette cartridge; after the cigarette rod is correspondingly connected with the cigarette cartridge, a signal transmission channel is formed by connecting a first electrode or a second electrode of the cigarette cartridge with a positive driving electrode of the cigarette rod, and a signal is transmitted between a controller in the cigarette rod and a control module in the cigarette cartridge to carry out key verification; the key verification is valid, the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer, the key verification is invalid, and the control module controls the enabling control circuit to be disconnected with the power supply loop of the atomizer.

Preferably, the enable control circuit comprises a first and gate, a second and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first source electrode connecting point and the second grid electrode connecting point, and the second electrode is electrically connected with the second source electrode connecting point and the first grid electrode connecting point; one input end of the first AND gate is electrically connected with the first electrode, the other input end of the first AND gate is electrically connected with the enabling end of the self-control module, and the output end of the first AND gate is electrically connected with the grid electrode of the second N-type MOS tube; one input end of the second AND gate is electrically connected with the second electrode, the other input end of the second AND gate is electrically connected with the enable end, and the output end of the second AND gate is electrically connected with the grid electrode of the first N-type MOS tube.

Preferably, the enable control circuit comprises a first or gate, a second or gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the first N-type MOS tube and serves as a first drain electrode connection point; the drain electrode of the second P-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and serves as a second drain electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the source electrode of the first N-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first drain electrode connection point and the grid electrode of the second N-type MOS tube, and the second electrode is electrically connected with the second drain electrode connection point and the grid electrode of the first N-type MOS tube; the enable end from the control module is respectively connected with one input end of the first OR gate and one input end of the second OR gate after passing through a NOT gate, the other input end of the first OR gate is connected with the first electrode, the output end of the first OR gate is electrically connected with the second grid connection point, the other input end of the second OR gate is connected with the second electrode, and the output end of the second OR gate is electrically connected with the first grid connection point.

Preferably, the enable control circuit comprises a first and gate, a second and gate, a third and gate, a fourth and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first source electrode connecting point, and the second electrode is electrically connected with the second source electrode connecting point; the first electrode is also electrically connected with one input end of a first AND gate, the second electrode is also electrically connected with the other input end of the first AND gate after being electrically connected with a first NOT gate, the output end of the first AND gate is electrically connected with one input end of a second AND gate, the enable end from the control module is electrically connected with the other input end of the second AND gate, the output end of the second AND gate is electrically connected with the grid of a second N-type MOS tube, and the output end of the second AND gate is electrically connected with the first grid connection point after being electrically connected with the second NOT gate; the second electrode is electrically connected with one input end of the third AND gate, the first electrode is electrically connected with the other input end of the third AND gate after being electrically connected with the third NOT gate, the output end of the third AND gate is electrically connected with one input end of the fourth AND gate, the enabling end from the control module is electrically connected with the other input end of the fourth AND gate, the output end of the fourth AND gate is electrically connected with the grid of the first N-type MOS tube, and the output end of the fourth AND gate is electrically connected with the second grid connection point after being electrically connected with the fourth NOT gate.

Preferably, the cartridge further comprises an internal power supply electrically connected to the first and second electrodes for supplying power to the safety circuit.

Preferably, the internal power supply comprises a first diode, a second diode, a third diode, a fourth diode and a power supply capacitor, wherein the anode of the first diode is electrically connected with the first electrode, the cathode of the first diode is electrically connected with the cathode of the second diode, the junction is used as a positive voltage output end for supplying power to the safety circuit, the junction is also electrically connected with the power supply capacitor and then grounded, the anode of the second diode is electrically connected with the second electrode, the anode of the third diode is grounded and is also electrically connected with the anode of the fourth diode, the cathode of the third diode is electrically connected with the anode of the first diode and is also electrically connected with the first electrode, and the cathode of the fourth diode is electrically connected with the anode of the second diode and is also electrically connected with the second electrode.

Preferably, the control module comprises a signal receiving and sending unit, a safety algorithm engine unit and a verification state latch unit which are electrically connected in sequence; the safety algorithm engine unit is used for carrying out secret key identification on information contents from the controller in the tobacco rod and correspondingly generating a connection control signal or a disconnection control signal to cause the verification state latch unit, and the verification state latch unit latches the connection control signal or the disconnection control signal generated and output by the safety algorithm engine unit.

Preferably, the cigarette rod further comprises a battery, a second switch tube and an atomization driver, wherein the positive electrode of the battery is electrically connected with the first pin of the second switch tube, the positive driving electrode is electrically connected with the second pin of the second switch tube, the control pin of the second switch tube is electrically connected with the output pin of the atomization driver, the negative electrode of the battery is electrically connected with the negative driving electrode, and the controller is also electrically connected with the atomization driver and the positive driving electrode respectively; after the cigarette rod is correspondingly connected with the cigarette cartridge, the controller of the cigarette rod is connected with the first electrode through the positive driving electrode or connected with the second electrode through the positive driving electrode, signals are transmitted and received between the controller and the control module, key verification is carried out, the key verification is effective, the controller of the cigarette rod controls the atomization driver to output effective enabling signals to the second switch tube, the first pin and the second pin of the second switch tube are connected, and then the battery supplies power to two ends of the atomizer; and if the key verification is invalid, the controller of the cigarette rod controls the atomization driver to output an invalid enabling signal to the second switch tube, the first pin and the second pin of the second switch tube are disconnected, and then the battery is disconnected to supply power to two ends of the atomizer.

The invention also provides an embodiment of the cartridge for the electronic cigarette, wherein the cartridge comprises an atomizer, a first electrode, a second electrode and a safety circuit, and the safety circuit comprises an enabling control circuit and a control module for controlling the power supply circuit of the atomizer to be switched on or switched off; the control module transmits signals to the outside through the first electrode or the second electrode and performs key verification; the key is verified to be valid, and the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer; and if the key verification is invalid, the control module controls the enabling control circuit to disconnect the power supply loop of the atomizer.

Preferably, the control module comprises a signal receiving and sending unit, a safety algorithm engine unit and a verification state latch unit which are electrically connected in sequence; the signal receiving and sending unit is electrically connected with the first electrode and the second electrode and used for transmitting signals to the outside, the safety algorithm engine unit is used for identifying a secret key and correspondingly generating a connection control signal or a disconnection control signal to cause the verification state latch unit, and the verification state latch unit latches the connection control signal or the disconnection control signal output by the safety algorithm engine unit.

The invention also provides a safety circuit, which comprises an enabling control circuit and a control module, wherein the control module performs key verification on an external transmission signal; the key is verified to be valid, and the control module controls the enabling control circuit to be conducted; and the key verification is invalid, and the control module controls the enabling control circuit to be disconnected.

Preferably, the enable control circuit comprises a first and gate, a second and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the first source electrode connecting point and the second grid electrode connecting point are electrically connected to serve as a first connecting end which is externally connected, and the second source electrode connecting point and the first grid electrode connecting point are electrically connected to serve as a second connecting end which is externally connected; one input end of the first AND gate is electrically connected with the first connecting end, the other input end of the first AND gate is electrically connected with the enabling end of the self-control module, and the output end of the first AND gate is electrically connected with the grid electrode of the second N-type MOS tube; one input end of the second AND gate is electrically connected with the second connecting end, the other input end of the second AND gate is electrically connected with the enabling end, and the output end of the second AND gate is electrically connected with the grid electrode of the first N-type MOS tube.

Preferably, the enable control circuit comprises a first or gate, a second or gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the first N-type MOS tube and serves as a first drain electrode connection point; the drain electrode of the second P-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and serves as a second drain electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the source electrode of the first N-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the first drain electrode connecting point is electrically connected with the grid electrode of the second N-type MOS tube to serve as a first connecting end which is externally connected, and the second drain electrode connecting point is electrically connected with the grid electrode of the first N-type MOS tube to serve as a second connecting end which is externally connected; the enabling end from the control module is respectively connected with one input end of the first OR gate and one input end of the second OR gate after passing through a NOT gate, the other input end of the first OR gate is connected with the first connecting end, the output end of the first OR gate is electrically connected with the second grid connecting point, the other input end of the second OR gate is connected with the second connecting end, and the output end of the second OR gate is electrically connected with the first grid connecting point.

Preferably, the enable control circuit comprises a first and gate, a second and gate, a third and gate, a fourth and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first source electrode connecting point is used as a first connecting end which is externally connected, and the second source electrode connecting point is used as a second connecting end which is externally connected; the first connecting end is also electrically connected with one input end of the first AND gate, the second connecting end is also electrically connected with the other input end of the first AND gate after being electrically connected with the first NOT gate, the output end of the first AND gate is electrically connected with one input end of the second AND gate, the enabling end from the control module is electrically connected with the other input end of the second AND gate, the output end of the second AND gate is electrically connected with the grid of the second N-type MOS tube, and the output end of the second AND gate is electrically connected with the first grid connecting point after being electrically connected with the second NOT gate; the second connecting end is electrically connected with one input end of a third AND gate, the first connecting end is electrically connected with the other input end of the third AND gate after being electrically connected with a third NOT gate, the output end of the third AND gate is electrically connected with one input end of a fourth AND gate, the enabling end from the control module is electrically connected with the other input end of the fourth AND gate, the output end of the fourth AND gate is electrically connected with the grid of the first N-type MOS tube, and the output end of the fourth AND gate is electrically connected with the second grid connecting point after being electrically connected with the fourth NOT gate.

Preferably, the safety circuit further comprises an internal power supply, the internal power supply comprises a first diode, a second diode, a third diode, a fourth diode and a power supply capacitor, wherein the anode of the first diode is used as a first power supply access end, the cathode of the first diode is electrically connected with the cathode of the second diode, the junction is used as a positive voltage output end for supplying power to the safety circuit, the junction is further electrically connected with the power supply capacitor and then grounded, the anode of the second diode is used as a second power supply access end, the anode of the third diode is grounded, and meanwhile, the anode of the fourth diode is grounded, the cathode of the third diode is electrically connected with the anode of the first diode and is also electrically connected with the first power supply access end, the cathode of the fourth diode is electrically connected with the anode of the second diode, and is also electrically connected with the second power supply access end.

Preferably, the control module comprises a signal receiving and sending unit, a safety algorithm engine unit and a verification state latch unit which are electrically connected in sequence; the signal receiving and sending unit is used for transmitting signals to the outside, the security algorithm engine unit is used for identifying keys and correspondingly generating a connection control signal or a disconnection control signal to cause the verification state latch unit, and the verification state latch unit latches the connection control signal or the disconnection control signal output by the security algorithm engine unit.

The invention has the technical effects that: the invention discloses an electronic cigarette, a cartridge and a safety circuit. The cigarette rod comprises a positive driving electrode and a negative driving electrode, the cigarette cartridge comprises an atomizer, a first electrode, a second electrode and a safety circuit, and the safety circuit comprises an enabling control circuit and a control module; when the cigarette rod is connected with the cigarette cartridge, the positive driving electrode and the negative driving electrode are electrically connected with the first electrode and the second electrode, or are electrically connected with the second electrode and the first electrode; after the tobacco rod is connected with the cigarette cartridge, a signal transmission channel formed by connecting the first electrode or the second electrode with the positive driving electrode of the tobacco rod is used for transmitting signals between a controller in the tobacco rod and a control module in the cigarette cartridge to carry out key verification; the key is verified to be valid, and the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer; and if the key is invalid, the control module controls the enabling control circuit to disconnect the power supply loop of the atomizer. Therefore, the cigarette cartridge and the cigarette rod can be inserted at will, the same interface is reused, counterfeit and inferior cigarette cartridges are prevented, the structure is simple, and the electronic cigarette is compatible with the existing electronic cigarette.

Drawings

Figure 1 is a schematic diagram of the composition of an embodiment of an electronic cigarette according to the present invention;

figure 2 is a schematic diagram of the composition of an embodiment of a tobacco rod in an electronic cigarette according to the invention;

figure 3 is a schematic diagram of the composition of an embodiment of a cartridge in an electronic cigarette according to the invention;

figure 4 is a schematic diagram of the components of an enable control circuit in an embodiment of a cartridge in an electronic cigarette according to the present invention;

figure 5 is a schematic diagram of another enable control circuit in an embodiment of a cartridge in an electronic cigarette according to the present invention;

figure 6 is a schematic diagram of another enable control circuit in an embodiment of a cartridge in an electronic cigarette according to the present invention;

figure 7 is a schematic diagram of the components of a signal receiving and transmitting unit in an embodiment of a cartridge of an electronic cigarette according to the invention;

figure 8 is a schematic diagram of the internal power supply components in an embodiment of a cartridge in an electronic cigarette according to the invention.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the invention discloses an electronic cigarette, which comprises a cigarette rod and a cigarette cartridge, wherein the cigarette rod comprises a positive drive electrode YG1 and a negative drive electrode YG2, the cigarette cartridge comprises a first electrode YD1, a second electrode YD2 and a safety circuit, and the safety circuit comprises an enable control circuit AD1 and a control module AD2, wherein the enable control circuit controls the power supply circuit of a atomizer YD3 to be switched on or off; when the cigarette rod is correspondingly connected with a cigarette bullet for use, the positive drive electrode YG1 and the negative drive electrode G2 of the cigarette rod are correspondingly and respectively in electrical contact connection with the first electrode YD1 and the second electrode YD2 of the cigarette bullet, or are correspondingly and respectively in electrical contact connection with the second electrode YD2 and the first electrode YD1 of the cigarette bullet; the cigarette cartridge comprises an atomizer YD3, after the cigarette rod is correspondingly connected with the cigarette cartridge, a signal transmission channel is formed by connecting a first electrode YD1 or a second electrode YD2 of the cigarette cartridge with a positive drive electrode YG1 of the cigarette rod, and a signal is transmitted between a controller YG3 in the cigarette rod and a control module AD2 in the cigarette cartridge for carrying out key verification; the key verification is valid, the control module AD2 controls the enabling control circuit AD1 to switch on the power supply circuit of the atomizer YD3, the key verification is invalid, and the control module AD2 controls the enabling control circuit AD1 to switch off the power supply circuit of the atomizer YD 3.

Here, the power supply circuit of the atomizer YD3 is an electrical connection path between the two power supply terminals of the atomizer YD3 and the positive and negative poles of the power supply, and when the power is supplied to the two power supply terminals of the atomizer YD3, it is necessary to connect the two power supply terminals to the first electrode YD1 and the second electrode YD2, respectively, and thus the power supply circuit is connected to supply power. When the power supply is cut off, at least one power supply end is required to be cut off.

It should be noted that the first electrode and the second electrode are not distinguished by positive and negative polarities of the electrodes, that is, the first electrode may be connected with a positive voltage or may be grounded, and the second electrode may also be connected with a positive voltage or may be grounded. Therefore, when the cigarette cartridge is used by being connected with the cigarette rod in a plugging way, although the positive driving electrode and the negative driving electrode of the cigarette rod are two electrodes for distinguishing the positive polarity and the negative polarity of the electrodes, the first electrode and the second electrode in the cigarette cartridge do not need to distinguish the polarities, so that the problem of opposite electrode plugging when the positive driving electrode and the negative driving electrode of the cigarette rod are connected with the first electrode and the second electrode correspondingly does not need to be worried about, or the positive driving electrode and the negative driving electrode of the cigarette rod can also be connected with the second electrode and the first electrode correspondingly. Therefore, the connection safety, reliability and use convenience of the cigarette rod and the cigarette cartridge can be guaranteed, and the electronic cigarette is prevented from being damaged due to electrode plugging errors.

Preferably, the key verification is valid, the control module controls the two power supply ends of the atomizer to be respectively connected with the first electrode and the second electrode, and the connected state is kept by the latch; the key verification is invalid, the control module controls the two power supply ends of the atomizer to be disconnected from the first electrode and the second electrode respectively, and the disconnected state is kept by being latched.

The key verification here is mainly the identification verification of the key between the controller and the control module of the cigarette rod.

Preferably, the first way of key identification is that the controller sends the key to the control module, and only one-way sending is needed, the control module performs calculation and verification after receiving the key, and the result of calculation and verification includes that the key is valid or invalid. The method can further comprise the step that the control module feeds back the result of the resolving verification to the controller, or the feedback is not needed, so that the controller only needs to transmit the key to the control module by carrying out one-way communication signal transmission.

Preferably, the second way of key identification is that the control module sends a key to the controller, the controller performs calculation verification after receiving the key, the result of calculation verification includes that the key is valid or invalid, then the controller sends the result of calculation verification back to the control module, and the control module performs the above-mentioned on-off control on the two power supply terminals of the atomizer after receiving the result of calculation verification.

Preferably, for example, the controller of the cigarette rod reads the key stored therein from the control module and if the key is of a normally valid nature, the controller will identify the cartridge as a legitimate and qualified product. Otherwise, if the key cannot be read, or the read key is an expired key, a repeated key or an incorrect key, and the key belongs to an invalid key, the controller will recognize that the cartridge is a counterfeit cartridge, and correspondingly take control actions, such as controlling to make the cartridge not normally used, and not supplying power and heating to the atomizer therein. If the key is valid, the controller transmits the valid identification result to the control module through a signal, and the control module correspondingly generates an output connection control signal after receiving the valid identification result; if the key is invalid, the controller transmits an invalid identification result to the control module through a signal, the control module correspondingly generates an output disconnection control signal after receiving the invalid identification result, or the control module cannot obtain a feedback signal of the controller within a specified time range, and the control module also correspondingly generates an output disconnection control signal if the control module does not perform valid key verification. Therefore, mutual authentication between the cartridge and the cigarette rod can be realized in this way, and the adaptive use between the cartridge and the cigarette rod is ensured.

It can also be seen that, in order to implement the key authentication, a signal transmission channel is further established between the control module and the controller after the first electrode or the second electrode of the cartridge is connected to the positive driving electrode of the tobacco rod, that is, an electrical connection channel formed by connecting the first electrode or the second electrode of the cartridge to the positive driving electrode of the tobacco rod has a function of a signal transmission channel required for key information interaction, and the electrical connection channel formed by connecting the first electrode or the second electrode of the cartridge to the positive driving electrode of the tobacco rod is mainly used as a connection channel of a power supply, so that in order to save an electrical connection interface, the connection interface of the power supply is reused, and the reuse belongs to time division multiplexing, that is, different functions are implemented by using the same interface in different time periods, specifically, by using the interface, after the cigarette rod and the cigarette cartridge are connected, firstly, signal transmission is carried out to carry out key verification, after the verification is valid, power supply connection is carried out through the interface, and if the verification is invalid, power supply can not be carried out through the interface. Therefore, the interface channel can be used for a signal transmission connection interface of key information and a power supply connection interface, so that the number of interfaces can be saved, the electrical connection mode of the cigarette cartridge and the cigarette rod does not need to be changed, and the purpose of safety and anti-counterfeiting can be realized only by replacing circuits in the cigarette rod and the cigarette cartridge, so that the cost is reduced, and the electronic cigarette is compatible with the existing electronic cigarette product.

Preferably, as shown in fig. 2, the cigarette rod further includes a battery YG4, a fog driver YG5, and a second switch tube YG6, wherein a positive electrode YG41 of the battery YG4 is electrically connected to the first pin YG61 of the second switch tube YG6, the positive driving electrode YG1 is electrically connected to the second pin YG62 of the second switch tube YG6, a control pin of the second switch tube YG6 is electrically connected to the output pin of the fog driver YG5, a negative electrode YG42 of the battery YG4 is electrically connected to the negative driving electrode YG2, and the controller YG3 is also electrically connected to the fog driver YG5 and the positive driving electrode YG1, respectively. Further, after the cigarette rod is connected to the cigarette cartridge, the controller YG3 of the cigarette rod is connected to the first electrode through the positive driving electrode YG1, or connected to the second electrode through the positive driving electrode YG1, and sends and receives signals to and from the control module to perform key verification, and the key verification is valid, then the controller YG3 of the cigarette rod controls the fog driver YG5 to output a valid enable signal to the second switching tube YG6, the first pin YG61 and the second pin YG62 of the second switching tube YG6 are connected, and the battery YG4 supplies power to two ends of the fog; if the key verification is invalid, the controller YG3 of the cigarette rod controls the fog driver YG5 to output an invalid enable signal to the second switch tube YG6, the first pin YG61 of the second switch tube YG6 is disconnected from the second pin YG62, and the battery YG4 is disconnected to supply power to the two ends of the fog device.

Preferably, in fig. 2, the cigarette smoking device further includes a suction force detector YG7, when the cigarette rod is connected to the cigarette cartridge and the key verification is valid, the enable control circuit in the cigarette cartridge is always in a closed state, and the second switch tube only controls the fog driver YG5 to output a valid enable signal to the second switch tube YG6 after the suction force detector YG7 detects the suction force generated by the cigarette cartridge being smoked, the first pin YG61 of the second switch tube YG6 is connected to the second pin YG62, and the battery YG4 supplies power to two ends of the fog device. When the YG7 detects that the cartridge is not smoked and is not generated, the atomization driver YG5 is controlled to output an invalid enable signal to the second switch tube YG6, the first pin YG61 of the second switch tube YG6 is disconnected from the second pin YG62, and the battery YG4 cannot supply power to the two ends of the atomizer. It can be seen that the power supply from the battery to the atomizer is only performed when the cartridge is smoked, and the two pins of the second switch tube YG6 are disconnected when the cartridge is not smoked, so that the atomizer cannot be powered.

Further, fig. 3 shows the detailed composition of the safety circuit in the cartridge. With reference to fig. 4, the enable control circuit AD1 includes a first and gate YM1, a second and gate YM2, a first P-type MOS transistor Pk1, a second P-type MOS transistor Pk2, a first N-type MOS transistor Nk1, and a second N-type MOS transistor Nk 2.

The grid electrode of the first P-type MOS tube Pk1 is used as a first grid electrode connection point Gk 1; the gate of the second P-type MOS transistor Pk2 is used as a second gate connection point Gk 2; the source electrode of the first P-type MOS transistor Pk1 is electrically connected with the source electrode of the first N-type MOS transistor Nk1 to form a first source electrode connection point Sk 1; the source of the second P-type MOS transistor Pk2 is electrically connected with the source of the second N-type MOS transistor Nk2 as a second source connection Sk 2; the drain electrode of the first P-type MOS transistor Pk1 is electrically connected with the drain electrode of the second P-type MOS transistor Pk2 and serves as the anode output end DC + of the enabling control circuit; the drain electrode of the first N-type MOS tube Nk1 is electrically connected with the drain electrode of the second N-type MOS tube Nk2 and is used as a negative electrode output end DC-of the enabling control circuit; the positive output end DC + and the negative output end DC-are respectively electrically connected with two power supply ends of the atomizer. The first electrode YD1 is electrically connected to the first source connection point Sk1 and the second gate connection point Gk2, and the second electrode YD2 is electrically connected to the second source connection point Sk2 and the first gate connection point Gk 1. One input end of the first and gate YM1 is electrically connected with the first electrode YD1, the other input end of the first and gate YM1 is electrically connected with an enable end EN1 of the control module, and the output end of the first and gate YM1 is electrically connected with the gate of the second N-type MOS transistor Nk 2; one input end of the second and gate YM2 is electrically connected to the second electrode YD2, the other input end is electrically connected to the enable end EN1, and the output end of the second and gate is electrically connected to the gate of the first N-type MOS transistor Nk 1. The enable terminal is electrically connected to the output terminal of the verification state latch unit.

Based on the circuit in fig. 4, when the first electrode YD1 is connected to a positive voltage, and the second electrode YD2 is connected to ground or a negative voltage, if the key verification is invalid, the low level control signal output by the verification state latch unit, for example, 0V, outputs a low level corresponding to both the first and gate and the second and gate, for example, 0 voltage, that is, the gate applied to the first N-type MOS transistor Nk1 and the gate applied to the second N-type MOS transistor Nk2 are both low levels, and both N-type MOS transistors are turned off, so that one power supply terminal of the atomizer is in an off state, and power supply cannot be performed. If the key is verified to be valid, the high level control signal output by the verification state latch unit corresponds to the first and gate to output high level, the high level control signal is applied to the gate of the second N-type MOS transistor Nk2, and the second and gate outputs low level, such as 0V voltage. Correspondingly, the drain and the source of the first P-type MOS transistor Pk1 are conducted, and the positive output terminal DC + of the enable control circuit is connected to the positive voltage of the first electrode YD 1. The source and the drain of the second N-type MOS transistor Nk2 are turned on, and the negative output terminal of the enable control circuit is DC-connected to the negative voltage of the second electrode YD2 or grounded, so that the two power supply terminals of the atomizer are respectively connected to the first electrode and the second electrode. Based on the same principle, when the first electrode YD1 is grounded or has a negative voltage, the second electrode YD2 has a positive voltage, and if the key verification is invalid, the two N-type MOS transistors are both turned off, so that one power supply end of the atomizer is in an off state, and power supply cannot be performed. If the key verification is valid, the drain and the source of the second P-type MOS transistor Pk2 are conducted, and the source and the drain of the first N-type MOS transistor Nk1 are conducted, so that the two power supply terminals of the atomizer are respectively connected with the first electrode and the second electrode.

In fig. 5, the enable control circuit AD1 includes a first or gate HM1, a second or gate HM2, a first P-type MOS transistor Pk1, a second P-type MOS transistor Pk2, a first N-type MOS transistor Nk1, and a second N-type MOS transistor Nk 2.

The grid electrode of the first P-type MOS tube Pk1 is used as a first grid electrode connection point Gk 1; the gate of the second P-type MOS transistor Pk2 is used as a second gate connection point Gk 2; the drain electrode of the first P-type MOS transistor Pk1 is electrically connected with the drain electrode of the first N-type MOS transistor Nk1 to form a first drain electrode connection point Dk 1; the drain electrode of the second P-type MOS transistor Pk2 is electrically connected with the drain electrode of the second N-type MOS transistor Nk2 to form a second drain electrode connection point Dk 2; the source electrode of the first P-type MOS transistor Pk1 is electrically connected with the source electrode of the second P-type MOS transistor Pk2 and serves as the positive electrode output end DC + of the enabling control circuit; the source electrode of the first N-type MOS transistor Nk1 is electrically connected with the source electrode of the second N-type MOS transistor Nk2 and serves as a negative electrode output end DC-of the enabling control circuit; the positive output end DC + and the negative output end DC-are respectively electrically connected with two power supply ends of the atomizer YD 3.

The first electrode YD1 is electrically connected to the first drain connection point Dk1 and the gate of the second N-type MOS transistor Nk2, and the second electrode YD2 is electrically connected to the second drain connection point Dk2 and the gate of the first N-type MOS transistor Nk 1.

The enable terminal EN1 is connected to an input terminal of a first or gate HM1 and to an input terminal of a second or gate HM2 respectively, via a not gate. The other input end of the first or gate HM1 is connected to the first electrode DY1, the output end of the first or gate HM1 is electrically connected to the second gate connection point Gk2, the other input end of the second or gate HM2 is connected to the second electrode DY2, and the output end of the second or gate HM2 is electrically connected to the first gate connection point Gk 1.

Based on the circuit in fig. 5, when the first electrode YD1 is connected to a positive voltage, and the second electrode YD2 is connected to a ground or a negative voltage, if the key verification is invalid, the low level control signal output by the verification state latch unit, for example, 0V, goes high after passing through the not gate. The first or gate HM1 outputs a high level and the second or gate HM2 outputs a high level. Accordingly, since both the first P-type MOS transistor Pk1 and the second P-type MOS transistor Pk2 are turned off, one power supply terminal of the atomizer is turned off, and power cannot be supplied. If the key is verified to be valid, the high level control signal output by the verification state latch unit is low level after passing through the NOT gate if 0V is detected. The high level output by the first or gate HM1 and the low level output by the second or gate HM 2. Thus, the drain and the source of the first P-type MOS transistor Pk1 are connected, and the positive output terminal DC + of the enable control circuit is connected to the positive voltage of the first electrode YD 1. The drain and the source of the second P-type MOS transistor Pk2 are cut off. The drain and the source of the first N-type MOS transistor Nk1 are cut off. The source and the drain of the second N-type MOS transistor Nk2 are turned on, and the negative output terminal of the enable control circuit is DC-connected to the negative voltage of the second electrode YD2 or grounded, so that the two power supply terminals of the atomizer are respectively connected to the first electrode and the second electrode.

Based on the same principle, when the first electrode YD1 is grounded or connected with a negative voltage, the second electrode YD2 is connected with a positive voltage, and if the key verification is invalid, the two P-type MOS transistors are both cut off, so that one power supply end of the atomizer is in a disconnected state, and power supply cannot be performed. If the key verification is valid, the drain and the source of the second P-type MOS tube Pk2 are connected, the source and the drain of the first N-type MOS tube Nk1 are connected, the drain and the source of the first P-type MOS tube Pk1 are disconnected, and the source and the drain of the second N-type MOS tube Nk2 are disconnected, so that the two power supply ends of the atomizer are respectively connected with the first electrode and the second electrode.

Preferably, in fig. 6, the enable control circuit AD1 includes a first and gate YM1, a second and gate YM2, a third and gate YM3, a fourth and gate YM4, a first P-type MOS transistor Pk1, a second P-type MOS transistor Pk2, a first N-type MOS transistor Nk1, and a second N-type MOS transistor Nk 2.

The grid electrode of the first P-type MOS tube Pk1 is used as a first grid electrode connection point Gk 1; the gate of the second P-type MOS transistor Pk2 is used as a second gate connection point Gk 2; the source electrode of the first P-type MOS transistor Pk1 is electrically connected with the source electrode of the first N-type MOS transistor Nk1 to form a first source electrode connection point Sk 1; the source of the second P-type MOS transistor Pk2 is electrically connected with the source of the second N-type MOS transistor Nk2 as a second source connection Sk 2; the drain electrode of the first P-type MOS transistor Pk1 is electrically connected with the drain electrode of the second P-type MOS transistor Pk2 and serves as the anode output end DC + of the enabling control circuit; the drain electrode of the first N-type MOS tube Nk1 is electrically connected with the drain electrode of the second N-type MOS tube Nk2 and is used as a negative electrode output end DC-of the enabling control circuit; the positive output end DC + and the negative output end DC-are respectively electrically connected with two power supply ends of the atomizer.

The first electrode YD1 is electrically connected to the first source connection point Sk1, and the second electrode YD2 is electrically connected to the second source connection point Sk 2. The first electrode YD1 is electrically connected with one input end of a first AND gate YM1, the second electrode YD2 is electrically connected with the other input end of the first AND gate YM1 after being electrically connected with a first NOT gate FM1, the output end of the first AND gate YM1 is electrically connected with one input end of a second AND gate YM2, the enable end EN1 from the control module is electrically connected with the other input end of the second AND gate YM2, the output end of the second AND gate YM2 is electrically connected with the gate of a second N-type MOS transistor Nk2, and the output end of the second AND gate YM2 is electrically connected with the second NOT gate FM2 and then is electrically connected with a first gate connection point Gk 1; the second electrode YD2 is electrically connected to one input end of a third and gate YM3, the first electrode YD1 is electrically connected to the other input end of the third and gate YM3 after being electrically connected to a third not gate FM3, the output end of the third and gate YM3 is electrically connected to one input end of a fourth and gate YM4, the enable end EN1 from the control module is electrically connected to the other input end of the fourth and gate YM4, the output end of the fourth and gate YM4 is electrically connected to the gate of the first N-type MOS transistor Nk1, and the output end of the fourth and gate YM4 is electrically connected to the fourth not gate FM4 and then is electrically connected to a second gate connection point Gk 2.

Based on the circuit in fig. 6, when the first electrode YD1 is connected to a positive voltage, and the second electrode YD2 is connected to ground or a negative voltage, if the key verification is invalid, the low level control signal output by the verification state latch unit, for example, 0V, outputs a low level corresponding to both the second and gate and the fourth and gate, for example, 0 voltage, that is, the gate applied to the first N-type MOS transistor Nk1 and the gate applied to the second N-type MOS transistor Nk2 are both low levels, both N-type MOS transistors are turned off, the gate applied to the first P-type MOS transistor Pk1 and the gate applied to the second P-type MOS transistor Pk2 are both high levels, both P-type MOS transistors are turned off, and therefore, one power supply terminal of the atomizer is in an off state, and power supply cannot be performed. If the key is verified to be valid, the high level control signal output by the verification state latch unit corresponds to the first AND gate to output high level, the second AND gate also outputs high level, the third AND gate outputs low level, and the fourth AND gate also outputs low level.

Correspondingly, the drain and the source of the first P-type MOS transistor Pk1 are conducted, and the positive output terminal DC + of the enable control circuit is connected to the positive voltage of the first electrode YD 1. The drain and the source of the second P-type MOS transistor Pk2 are cut off. The source and the drain of the second N-type MOS transistor Nk2 are turned on, and the negative output terminal of the enable control circuit is DC-connected to the negative voltage of the second electrode YD2 or grounded, so that the two power supply terminals of the atomizer are respectively connected to the first electrode and the second electrode. The source and drain of the first N-type MOS transistor Nk1 are off.

Based on the same principle, when the first electrode YD1 is grounded or has a negative voltage, the second electrode YD2 has a positive voltage, and if the key verification is invalid, the two P-type MOS and the two N-type MOS transistors are both cut off, so that one power supply end of the atomizer is in an off state and cannot supply power. If the key is verified to be valid, the high level control signal output by the verification state latch unit corresponds to the first AND gate to output the low level, the second AND gate also outputs the low level, the third AND gate outputs the high level, and the fourth AND gate also outputs the high level. The drain and the source of the second P-type MOS transistor Pk2 are conducted, and the source and the drain of the first N-type MOS transistor Nk1 are conducted, so that the two power supply terminals of the atomizer are respectively connected with the first electrode and the second electrode. Meanwhile, the drain and the source of the first P-type MOS transistor Pk1 are cut off, and the source and the drain of the second N-type MOS transistor Nk2 are cut off.

Further, in fig. 3, the signal receiving and transmitting unit AD21 is electrically connected to both the first electrode YD1 and the second electrode YD2, whereby signals can be transmitted and received through bidirectional communication between the first electrode YD1 or the second electrode YD2 and the controller in the tobacco rod, respectively.

Referring to fig. 7, the communication interface of the signal receiving and transmitting unit includes a first communication interface Tj1 and a second communication interface Tj2, both of which have the same circuit composition and include four connection ports, taking the first communication interface Tj1 as an example, namely a positive input port Tj11, a negative input port Tj12, a receiving output port Tj13 and a transmitting output port Tj14, and includes a first receiving amplifier Tj15 inside, a first transmitting N-type MOS transistor Tj16 and a second transmitting N-type MOS transistor Tj17, an input terminal of the first receiving amplifier Tj15 is electrically connected to a source of the first transmitting N-type MOS transistor Tj16, and the electrical connection point is a positive input port Tj11, an output terminal of the first receiving amplifier Tj15 is a receiving output port Tj13, a drain of the first transmitting N-type MOS transistor Tj16 is electrically connected to a drain of the second transmitting N-type MOS transistor Tj17, a drain of the first transmitting gate Tj 68692 is electrically connected to a transmitting gate of the second transmitting N-type MOS transistor Tj 638, the junction is used as a transmitting output port Tj14, and the source of the second transmitting N-type MOS transistor Tj17 is used as a negative input port Tj 12. Further, a positive input port Tj11 of the first communication interface is electrically connected to the first electrode YD1, a negative input port Tj12 of the first communication interface is electrically connected to the second electrode YD2, and the receiving output port Tj13 and the sending output port Tj14 are respectively connected to a communication control interface module Tj3, which is used for controlling bidirectional communication and receiving and sending communication signals. The positive input port Tj21 of the second communication interface Tj2 is electrically connected with the second electrode YD2, the negative input port Tj22 of the second communication interface Tj2 is electrically connected with the first electrode YD1, and the receiving output port Tj23 and the sending output port Tj24 are respectively connected to the communication control interface module Tj 3. Since the internal components of the second communication interface Tj2 and the first communication interface Tj1 are the same, the respective components in the second communication interface Tj2 are not described in detail.

It can be seen that, through the two communication interfaces, whether the first electrode is connected with an external positive voltage (corresponding to the second electrode being connected with an external negative voltage or grounded), or the second electrode is connected with an external positive voltage (corresponding to the first electrode being connected with an external negative voltage or grounded), one of the communication interfaces can be enabled to work normally, while the other communication interface is out of service and does not affect the working communication interface.

Further, in fig. 3, in addition to the aforementioned signal receiving and sending unit AD21, the security circuit in the cartridge further includes a security algorithm engine unit AD22 and a verification status latch unit AD 23. These units may be considered as internal constituent units of the control module AD 2.

Specifically, the signal receiving and transmitting unit AD21 is electrically connected with the first electrode and the second electrode, so that bidirectional communication with the controller in the cigarette rod, that is, transmission and reception of signals can be realized.

And the safety algorithm engine unit AD22 is used for analyzing the information content from the controller in the tobacco rod, and correspondingly sending a key to the controller after the analysis conforms to the agreement of both parties, so that the controller can identify the key of the engine unit.

Furthermore, when the controller analyzes the identification key correctly, a valid command is sent to the engine unit, the engine unit generates a switch-on control signal, otherwise, if the controller analyzes the identification key incorrectly, an invalid command is sent to the engine unit, and the controller generates a switch-off control signal.

The verification state latch unit AD23 latches the on control signal or the off control signal outputted from the engine unit, and outputs the control signal to the enable control circuit to control the enable control circuit to be turned on or off while keeping the control state unchanged.

With continued reference to fig. 3, the safety circuit further includes an internal power supply AD3, which is a first implementation manner of the circuit of the internal power supply AD3, and includes a first diode AD31, a second diode AD32, a third diode AD33, a fourth diode AD34, and a supply capacitor AD35, wherein an anode of the first diode AD31 is electrically connected to the first electrode YD1, a cathode of the first diode AD31 is electrically connected to a cathode of the second diode AD32, the junction serves as a positive voltage output terminal for supplying power to the safety circuit inside the smoke bomb, the junction is further electrically connected to the ground after being connected to the supply capacitor AD35, an anode of the second diode AD32 is electrically connected to the second electrode YD2, an anode of the third diode AD33 is grounded, and is also electrically connected to a cathode of the fourth diode AD34, a cathode of the third diode AD33 is electrically connected to an anode of the first diode AD1, and is also electrically connected to a cathode of the first diode AD32 of the first electrode YD 4642, while also being electrically connected to the second electrode YD 2. Preferably, the connection positions of the first electrode and the second electrode can be interchanged due to the symmetry of the circuit composition.

It can be seen that when the first electrode is connected with a positive voltage and the corresponding second electrode is grounded, the first diode AD31 and the fourth diode AD34 are turned on, the second diode AD32 and the third diode AD33 are turned off, and the voltage of the internal power supply is a voltage drop value left after the PN on voltage of the first diode AD31 and the PN on voltage of the fourth diode AD34 are subtracted from the externally input positive voltage. Similarly, when the first electrode is grounded and a positive voltage is applied to the corresponding second electrode, the second diode AD32 and the third diode AD33 are turned on, the first diode AD31 and the fourth diode AD34 are turned off, and the voltage of the internal power supply is a voltage drop value left after the PN on voltage of the second diode AD32 and the PN on voltage of the third diode AD33 are subtracted from the externally input positive voltage.

Further, referring to fig. 8, there is a second implementation manner for the internal power supply, that is, a polarity conversion circuit is disposed between the first electrode and the second electrode, and the polarity conversion circuit can realize the only output of the positive and negative polarities of the power supply, that is, the positive and negative polarities of the output after passing through the polarity conversion circuit are determined and only no matter how the first electrode and the second electrode are connected to the external voltage. In fig. 8, a first P-type MOS transistor P1, a second P-type MOS transistor P2, a first N-type MOS transistor N1, and a second N-type MOS transistor N2 are included; the grid electrode of the first P-type MOS transistor P1 is electrically connected with the grid electrode of the first N-type MOS transistor N1 to be used as a first grid electrode connection point G1; the grid electrode of the second P-type MOS tube P2 is electrically connected with the grid electrode of the second N-type MOS tube N2 and serves as a second grid electrode connection point G2; the source electrode of the first P-type MOS transistor P1 is electrically connected with the drain electrode of the first N-type MOS transistor N1 to serve as a first drain electrode connection point D1; the source electrode of the second P-type MOS transistor P2 is electrically connected with the drain electrode of the second N-type MOS transistor N2 and serves as a second drain electrode connection point D2; the drain electrode of the first P-type MOS tube P1 is electrically connected with the drain electrode of the second P-type MOS tube P2 and is used as the positive electrode output end DC + of the polarity conversion circuit; the source electrode of the first N-type MOS tube N1 is electrically connected with the source electrode of the second N-type MOS tube N2 and is used as a negative electrode output end DC-of the polarity conversion circuit; the first electrode YD1 is electrically connected to the first drain connection point D1 and the second gate connection point G2, and the second electrode YD2 is electrically connected to the second drain connection point D2 and the first gate connection point G1.

It can be seen that when a positive voltage is input to the first electrode YD1, the second electrode YD2 is grounded, and a negative pressure difference is formed between the gate and the source of the first P-type MOS transistor P1, so that the drain and the source of the first P-type MOS transistor P1 are turned on, the positive voltage input through the first electrode YD1 reaches the positive output terminal DC + of the polarity conversion circuit, and the drain and the source of the first N-type MOS transistor N1 are turned off; meanwhile, the drain and the source of the second P-type MOS transistor P2 are cut off, the drain and the source of the second N-type MOS transistor N2 are connected, and the second electrode YD2 is grounded, so that the negative output terminal DC-of the polarity conversion circuit is grounded. When the first electrode YD1 is grounded, positive voltage is input into the second electrode YD2, negative pressure difference is formed between the gate and the source of the second P-type MOS transistor P2, so that the drain and the source of the second P-type MOS transistor P2 are connected, the positive voltage input through the second electrode YD2 reaches the positive output terminal DC + of the polarity conversion circuit, and the drain and the source of the second N-type MOS transistor N2 are disconnected; meanwhile, the drain and the source of the first P-type MOS transistor P1 are cut off, the drain and the source of the first N-type MOS transistor N1 are connected, and grounded through the first electrode YD1, and the negative output terminal DC-of the polarity conversion circuit is grounded.

Based on the same concept and in combination with the foregoing, the invention further provides an embodiment of a cartridge for an electronic cigarette, the cartridge further comprising a first electrode, a second electrode and a safety circuit, the safety circuit comprising an enable control circuit and a control module for controlling the power supply circuit of the atomizer to be switched on or off; the control module transmits signals to the outside through the first electrode or the second electrode and performs key verification; the key is verified to be valid, and the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer; and if the key verification is invalid, the control module controls the enabling control circuit to disconnect the power supply loop of the atomizer.

Based on the same concept and in combination with the above, the invention also provides an embodiment of a security circuit, wherein the security circuit comprises an enabling control circuit and a control module, and the control module performs key verification on an external transmission signal; the key is verified to be valid, and the control module controls the enabling control circuit to be conducted; and the key verification is invalid, and the control module controls the enabling control circuit to be disconnected.

Preferably, the enable control circuit comprises a first and gate, a second and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the first source electrode connecting point and the second grid electrode connecting point are electrically connected to serve as a first connecting end which is externally connected, and the second source electrode connecting point and the first grid electrode connecting point are electrically connected to serve as a second connecting end which is externally connected; one input end of the first AND gate is electrically connected with the first connecting end, the other input end of the first AND gate is electrically connected with the enabling end of the self-control module, and the output end of the first AND gate is electrically connected with the grid electrode of the second N-type MOS tube; one input end of the second AND gate is electrically connected with the second connecting end, the other input end of the second AND gate is electrically connected with the enabling end, and the output end of the second AND gate is electrically connected with the grid electrode of the first N-type MOS tube. The first connection end and the second connection end are two electrode ends used as input of the enable control circuit, and are equivalent to the first electrode and the second electrode, and with the above content, the positive and negative polarities of the two connection ends are not necessarily limited, that is, the first connection end is connected with a positive voltage, the second connection end is connected with a negative voltage or ground, or the first connection end is connected with a negative voltage or ground, and the second connection end is connected with a positive voltage.

Preferably, the safety circuit further comprises an internal power supply, the internal power supply comprises a first diode, a second diode, a third diode, a fourth diode and a power supply capacitor, wherein the anode of the first diode is used as a first power supply access end, the cathode of the first diode is electrically connected with the cathode of the second diode, the junction is used as a positive voltage output end for supplying power to the safety circuit, the junction is further electrically connected with the power supply capacitor and then grounded, the anode of the second diode is used as a second power supply access end, the anode of the third diode is grounded, and meanwhile, the anode of the fourth diode is grounded, the cathode of the third diode is electrically connected with the anode of the first diode and is also electrically connected with the first power supply access end, the cathode of the fourth diode is electrically connected with the anode of the second diode, and is also electrically connected with the second power supply access end. The first power supply input end and the second power supply input end are two electrode ends serving as power supply input, and with the above description, the positive and negative polarities of the two power supply input ends are not necessarily limited, that is, the first power supply input end may be connected with a positive voltage, the second power supply input end may be connected with a negative voltage or ground, the first power supply input end may be connected with a negative voltage or ground, and the second power supply input end may be connected with a positive voltage.

Through the mode, the invention discloses an electronic cigarette, a cartridge for the electronic cigarette and a safety circuit. The cigarette rod comprises a positive driving electrode and a negative driving electrode, the cigarette cartridge comprises an atomizer, a first electrode, a second electrode and a safety circuit, and the safety circuit comprises an enabling control circuit and a control module; when the cigarette rod is connected with the cigarette cartridge, the positive driving electrode and the negative driving electrode are electrically connected with the first electrode and the second electrode, or are electrically connected with the second electrode and the first electrode; after the tobacco rod is connected with the cigarette cartridge, a signal transmission channel formed by connecting the first electrode or the second electrode with the positive driving electrode of the tobacco rod is used for transmitting signals between a controller in the tobacco rod and a control module in the cigarette cartridge to carry out key verification; the key is verified to be valid, and the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer; and if the key is invalid, the control module controls the enabling control circuit to disconnect the power supply loop of the atomizer. Therefore, the cigarette cartridge and the cigarette rod can be inserted at will, the same interface is reused, counterfeit and inferior cigarette cartridges are prevented, the structure is simple, and the electronic cigarette is compatible with the existing electronic cigarette.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims

1. An electronic cigarette comprises a cigarette rod and a cigarette cartridge, and is characterized in that the cigarette rod comprises a positive driving electrode and a negative driving electrode, the cigarette cartridge comprises an atomizer, a first electrode, a second electrode and a safety circuit, and the safety circuit comprises an enabling control circuit and a control module, wherein the enabling control circuit is used for controlling the power supply circuit of the atomizer to be switched on or switched off; when the cigarette rod is correspondingly connected with the cigarette cartridge for use, the positive drive electrode and the negative drive electrode of the cigarette rod are correspondingly and respectively in electrical contact connection with the first electrode and the second electrode of the cigarette cartridge, or are correspondingly and respectively in electrical contact connection with the second electrode and the first electrode of the cigarette cartridge; after the cigarette rod is correspondingly connected with the cigarette cartridge, a signal transmission channel is formed by connecting a first electrode or a second electrode of the cigarette cartridge with a positive driving electrode of the cigarette rod, and a signal is transmitted between a controller in the cigarette rod and a control module in the cigarette cartridge to carry out key verification; the key verification is valid, the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer, the key verification is invalid, and the control module controls the enabling control circuit to be disconnected with the power supply loop of the atomizer.

2. The electronic cigarette of claim 1, wherein the enable control circuit comprises a first and gate, a second and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first source electrode connecting point and the second grid electrode connecting point, and the second electrode is electrically connected with the second source electrode connecting point and the first grid electrode connecting point; one input end of the first AND gate is electrically connected with the first electrode, the other input end of the first AND gate is electrically connected with the enabling end of the self-control module, and the output end of the first AND gate is electrically connected with the grid electrode of the second N-type MOS tube; one input end of the second AND gate is electrically connected with the second electrode, the other input end of the second AND gate is electrically connected with the enable end, and the output end of the second AND gate is electrically connected with the grid electrode of the first N-type MOS tube.

3. The electronic cigarette of claim 1, wherein the enable control circuit comprises a first or gate, a second or gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the first N-type MOS tube and serves as a first drain electrode connection point; the drain electrode of the second P-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and serves as a second drain electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the source electrode of the first N-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first drain electrode connection point and the grid electrode of the second N-type MOS tube, and the second electrode is electrically connected with the second drain electrode connection point and the grid electrode of the first N-type MOS tube; the enable end from the control module is respectively connected with one input end of the first OR gate and one input end of the second OR gate after passing through a NOT gate, the other input end of the first OR gate is connected with the first electrode, the output end of the first OR gate is electrically connected with the second grid connection point, the other input end of the second OR gate is connected with the second electrode, and the output end of the second OR gate is electrically connected with the first grid connection point.

4. The electronic cigarette of claim 1, wherein the enable control circuit comprises a first and gate, a second and gate, a third and gate, a fourth and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first source electrode connecting point, and the second electrode is electrically connected with the second source electrode connecting point; the first electrode is also electrically connected with one input end of a first AND gate, the second electrode is also electrically connected with the other input end of the first AND gate after being electrically connected with a first NOT gate, the output end of the first AND gate is electrically connected with one input end of a second AND gate, the enable end from the control module is electrically connected with the other input end of the second AND gate, the output end of the second AND gate is electrically connected with the grid of a second N-type MOS tube, and the output end of the second AND gate is electrically connected with the first grid connection point after being electrically connected with the second NOT gate; the second electrode is electrically connected with one input end of the third AND gate, the first electrode is electrically connected with the other input end of the third AND gate after being electrically connected with the third NOT gate, the output end of the third AND gate is electrically connected with one input end of the fourth AND gate, the enabling end from the control module is electrically connected with the other input end of the fourth AND gate, the output end of the fourth AND gate is electrically connected with the grid of the first N-type MOS tube, and the output end of the fourth AND gate is electrically connected with the second grid connection point after being electrically connected with the fourth NOT gate.

5. The electronic cigarette of claim 1, wherein the cartridge further comprises an internal power source electrically connected to the first electrode and the second electrode for powering the safety circuit.

6. The electronic cigarette of claim 5, wherein the internal power source comprises a first diode, a second diode, a third diode, a fourth diode and a power supply capacitor, wherein an anode of the first diode is electrically connected with the first electrode, a cathode of the first diode is electrically connected with a cathode of the second diode, the junction is used as a positive voltage output end for supplying power to the safety circuit, the junction is electrically connected with the power supply capacitor and then grounded, an anode of the second diode is electrically connected with the second electrode, an anode of the third diode is grounded, and is also electrically connected with an anode of the fourth diode and grounded, a cathode of the third diode is electrically connected with an anode of the first diode and is also electrically connected with the first electrode, and a cathode of the fourth diode is electrically connected with an anode of the second diode and is also electrically connected with the second electrode.

7. The electronic cigarette according to any one of claims 1 to 6, wherein the control module comprises a signal receiving and transmitting unit, a safety algorithm engine unit, and a verification state latch unit which are electrically connected in sequence; the safety algorithm engine unit is used for carrying out secret key identification on information contents from the controller in the tobacco rod and correspondingly generating a connection control signal or a disconnection control signal to cause the verification state latch unit, and the verification state latch unit latches the connection control signal or the disconnection control signal generated and output by the safety algorithm engine unit.

8. The electronic cigarette according to claim 7, wherein the cigarette rod further comprises a battery, a second switch tube and an atomization driver, the positive electrode of the battery is electrically connected to the first pin of the second switch tube, the positive driving electrode is electrically connected to the second pin of the second switch tube, the control pin of the second switch tube is electrically connected to the output pin of the atomization driver, the negative electrode of the battery is electrically connected to the negative driving electrode, and the controller is also electrically connected to the atomization driver and the positive driving electrode respectively; after the cigarette rod is correspondingly connected with the cigarette cartridge, the controller of the cigarette rod is connected with the first electrode through the positive driving electrode or connected with the second electrode through the positive driving electrode, signals are transmitted and received between the controller and the control module, key verification is carried out, the key verification is effective, the controller of the cigarette rod controls the atomization driver to output effective enabling signals to the second switch tube, the first pin and the second pin of the second switch tube are connected, and then the battery supplies power to two ends of the atomizer; and if the key verification is invalid, the controller of the cigarette rod controls the atomization driver to output an invalid enabling signal to the second switch tube, the first pin and the second pin of the second switch tube are disconnected, and then the battery is disconnected to supply power to two ends of the atomizer.

9. A cartridge for an electronic cigarette, the cartridge comprising an atomizer, characterized in that the cartridge further comprises a first electrode, a second electrode and a safety circuit, the safety circuit comprising an enable control circuit and a control module for controlling the power supply circuit of the atomizer to be switched on or off; the control module transmits signals to the outside through the first electrode or the second electrode and performs key verification; the key is verified to be valid, and the control module controls the enabling control circuit to be connected with a power supply loop of the atomizer; and if the key verification is invalid, the control module controls the enabling control circuit to disconnect the power supply loop of the atomizer.

10. The cartridge of claim 9, wherein the enable control circuit comprises a first and gate, a second and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first source electrode connecting point and the second grid electrode connecting point, and the second electrode is electrically connected with the second source electrode connecting point and the first grid electrode connecting point; one input end of the first AND gate is electrically connected with the first electrode, the other input end of the first AND gate is electrically connected with the enabling end of the self-control module, and the output end of the first AND gate is electrically connected with the grid electrode of the second N-type MOS tube; one input end of the second AND gate is electrically connected with the second electrode, the other input end of the second AND gate is electrically connected with the enable end, and the output end of the second AND gate is electrically connected with the grid electrode of the first N-type MOS tube.

11. The cartridge of claim 9, wherein the enable control circuit comprises a first or gate, a second or gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the first N-type MOS tube and serves as a first drain electrode connection point; the drain electrode of the second P-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and serves as a second drain electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the source electrode of the first N-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first drain electrode connection point and the grid electrode of the second N-type MOS tube, and the second electrode is electrically connected with the second drain electrode connection point and the grid electrode of the first N-type MOS tube; the enable end from the control module is respectively connected with one input end of the first OR gate and one input end of the second OR gate after passing through a NOT gate, the other input end of the first OR gate is connected with the first electrode, the output end of the first OR gate is electrically connected with the second grid connection point, the other input end of the second OR gate is connected with the second electrode, and the output end of the second OR gate is electrically connected with the first grid connection point.

12. The cartridge of claim 9, wherein the enable control circuit comprises a first and gate, a second and gate, a third and gate, a fourth and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first electrode is electrically connected with the first source electrode connecting point, and the second electrode is electrically connected with the second source electrode connecting point; the first electrode is also electrically connected with one input end of a first AND gate, the second electrode is also electrically connected with the other input end of the first AND gate after being electrically connected with a first NOT gate, the output end of the first AND gate is electrically connected with one input end of a second AND gate, the enable end from the control module is electrically connected with the other input end of the second AND gate, the output end of the second AND gate is electrically connected with the grid of a second N-type MOS tube, and the output end of the second AND gate is electrically connected with the first grid connection point after being electrically connected with the second NOT gate; the second electrode is electrically connected with one input end of the third AND gate, the first electrode is electrically connected with the other input end of the third AND gate after being electrically connected with the third NOT gate, the output end of the third AND gate is electrically connected with one input end of the fourth AND gate, the enabling end from the control module is electrically connected with the other input end of the fourth AND gate, the output end of the fourth AND gate is electrically connected with the grid of the first N-type MOS tube, and the output end of the fourth AND gate is electrically connected with the second grid connection point after being electrically connected with the fourth NOT gate.

13. The cartridge for an electronic cigarette of claim 9, further comprising an internal power source electrically connected to the first electrode and the second electrode for powering the safety circuit.

14. The cartridge of claim 13, wherein the internal power source comprises a first diode, a second diode, a third diode, a fourth diode and a supply capacitor, wherein the anode of the first diode is electrically connected to the first electrode, the cathode of the first diode is electrically connected to the cathode of the second diode, the junction is used as a positive voltage output terminal for supplying power to the safety circuit, the junction is electrically connected to the supply capacitor and then grounded, the anode of the second diode is electrically connected to the second electrode, the anode of the third diode is grounded and also electrically connected to the anode of the fourth diode, the cathode of the third diode is electrically connected to the anode of the first diode and also electrically connected to the first electrode, and the cathode of the fourth diode is electrically connected to the anode of the second diode and also electrically connected to the second electrode.

15. The cartridge of any one of claims 9 to 14, wherein the control module comprises a signal receiving and transmitting unit, a security algorithm engine unit, and a verification state latch unit which are electrically connected in sequence; the signal receiving and sending unit is electrically connected with the first electrode and the second electrode and used for transmitting signals to the outside, the safety algorithm engine unit is used for identifying a secret key and correspondingly generating a connection control signal or a disconnection control signal to cause the verification state latch unit, and the verification state latch unit latches the connection control signal or the disconnection control signal output by the safety algorithm engine unit.

16. The safety circuit is characterized by comprising an enabling control circuit and a control module, wherein the control module is used for carrying out key verification on an external transmission signal; the key is verified to be valid, and the control module controls the enabling control circuit to be conducted; and the key verification is invalid, and the control module controls the enabling control circuit to be disconnected.

17. The safety circuit according to claim 16, wherein the enable control circuit comprises a first and gate, a second and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the first source electrode connecting point and the second grid electrode connecting point are electrically connected to serve as a first connecting end which is externally connected, and the second source electrode connecting point and the first grid electrode connecting point are electrically connected to serve as a second connecting end which is externally connected; one input end of the first AND gate is electrically connected with the first connecting end, the other input end of the first AND gate is electrically connected with the enabling end of the self-control module, and the output end of the first AND gate is electrically connected with the grid electrode of the second N-type MOS tube; one input end of the second AND gate is electrically connected with the second connecting end, the other input end of the second AND gate is electrically connected with the enabling end, and the output end of the second AND gate is electrically connected with the grid electrode of the first N-type MOS tube.

18. The safety circuit according to claim 16, wherein the enable control circuit comprises a first or gate, a second or gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the first N-type MOS tube and serves as a first drain electrode connection point; the drain electrode of the second P-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and serves as a second drain electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the source electrode of the first N-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the first drain electrode connecting point is electrically connected with the grid electrode of the second N-type MOS tube to serve as a first connecting end which is externally connected, and the second drain electrode connecting point is electrically connected with the grid electrode of the first N-type MOS tube to serve as a second connecting end which is externally connected; the enabling end from the control module is respectively connected with one input end of the first OR gate and one input end of the second OR gate after passing through a NOT gate, the other input end of the first OR gate is connected with the first connecting end, the output end of the first OR gate is electrically connected with the second grid connecting point, the other input end of the second OR gate is connected with the second connecting end, and the output end of the second OR gate is electrically connected with the first grid connecting point.

19. The safety circuit according to claim 16, wherein the enable control circuit comprises a first and gate, a second and gate, a third and gate, a fourth and gate, a first P-type MOS transistor, a second P-type MOS transistor, a first N-type MOS transistor, and a second N-type MOS transistor; the grid of the first P-type MOS tube is used as a first grid connection point; the grid electrode of the second P-type MOS tube is used as a second grid electrode connection point; the source electrode of the first P-type MOS tube is electrically connected with the source electrode of the first N-type MOS tube and serves as a first source electrode connection point; the source electrode of the second P-type MOS tube is electrically connected with the source electrode of the second N-type MOS tube and serves as a second source electrode connection point; the drain electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube and is used as the anode output end of the enabling control circuit; the drain electrode of the first N-type MOS tube is electrically connected with the drain electrode of the second N-type MOS tube and is used as the cathode output end of the enabling control circuit; the positive output end and the negative output end are respectively electrically connected with two power supply ends of the atomizer; the first source electrode connecting point is used as a first connecting end which is externally connected, and the second source electrode connecting point is used as a second connecting end which is externally connected; the first connecting end is also electrically connected with one input end of the first AND gate, the second connecting end is also electrically connected with the other input end of the first AND gate after being electrically connected with the first NOT gate, the output end of the first AND gate is electrically connected with one input end of the second AND gate, the enabling end from the control module is electrically connected with the other input end of the second AND gate, the output end of the second AND gate is electrically connected with the grid of the second N-type MOS tube, and the output end of the second AND gate is electrically connected with the first grid connecting point after being electrically connected with the second NOT gate; the second connecting end is electrically connected with one input end of a third AND gate, the first connecting end is electrically connected with the other input end of the third AND gate after being electrically connected with a third NOT gate, the output end of the third AND gate is electrically connected with one input end of a fourth AND gate, the enabling end from the control module is electrically connected with the other input end of the fourth AND gate, the output end of the fourth AND gate is electrically connected with the grid of the first N-type MOS tube, and the output end of the fourth AND gate is electrically connected with the second grid connecting point after being electrically connected with the fourth NOT gate.

20. The safety circuit of claim 16, further comprising an internal power supply, the internal power supply comprises a first diode, a second diode, a third diode, a fourth diode and a power supply capacitor, wherein the anode of the first diode is used as a first power supply access end, the cathode of the first diode is electrically connected with the cathode of the second diode, the junction is used as a positive voltage output end for supplying power to the safety circuit, the junction is also electrically connected with the power supply capacitor and then grounded, the anode of the second diode is used as a second power supply access end, the anode of the third diode is grounded, meanwhile, the anode of the fourth diode is electrically connected with the ground, the cathode of the third diode is electrically connected with the anode of the first diode, and the fourth diode is electrically connected with the anode of the second diode and is also electrically connected with the second power supply access end.

21. The safety circuit according to any one of claims 16 to 20, wherein the control module comprises a signal receiving and sending unit, a safety algorithm engine unit and a verification state latch unit which are electrically connected in sequence; the signal receiving and sending unit is used for transmitting signals to the outside, the security algorithm engine unit is used for identifying keys and correspondingly generating a connection control signal or a disconnection control signal to cause the verification state latch unit, and the verification state latch unit latches the connection control signal or the disconnection control signal output by the security algorithm engine unit.