CN113303504A

CN113303504A - Tobacco rod and electronic cigarette

Info

Publication number: CN113303504A
Application number: CN202110548334.2A
Authority: CN
Inventors: 宋利军; 廖伟宝
Original assignee: Xi'an Wenxian Semiconductor Technology Co ltd
Current assignee: Xi'an Wenxian Semiconductor Technology Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-08-27
Anticipated expiration: 2041-05-19
Also published as: CN113303504B

Abstract

The invention provides a tobacco stem, which comprises a battery and a battery protection circuit, wherein the battery protection circuit comprises a power supply pin electrically connected with the anode of the battery, a power grounding pin electrically connected with the cathode of the battery and a system grounding pin; the cigarette rod comprises a thimble anode and a thimble cathode which are used for being electrically connected with the cigarette cartridge, a system grounding pin is electrically connected with the thimble cathode, and two NMOS tubes are connected between a power grounding pin and the thimble anode in series; when the tobacco rod is in a shipping mode, the system grounding pin and the power grounding pin are disconnected; the cigarette bullet is connected with the cigarette pole, and battery protection circuit detects the change of perception system ground connection pin voltage, and control cigarette pole withdraws from the shipping mode. Still provide an electron cigarette, effectively realized according to the connected state of tobacco rod and cigarette bullet, automated inspection gets into or withdraws from the ship mode, is favorable to practicing thrift the energy consumption, does not change user's use habit, promotes user's experience. Meanwhile, the method has the advantages of low cost and intensification.

Description

Tobacco rod and electronic cigarette

Technical Field

The application relates to the technical field of electronic cigarettes, in particular to a tobacco rod and an electronic cigarette.

Background

An electronic cigarette is an electronic product simulating a cigarette, and the electronic cigarette comprises a cigarette rod and a cigarette cartridge which are usually separated, and the cigarette rod and the cigarette cartridge are assembled together for smoking and using after being purchased by a consumer. The atomizer, the control circuit, the battery and the like are usually arranged in the tobacco rod, the atomizer comprises a tobacco tar pipe for storing tobacco tar and a heating wire for heating the tobacco tar pipe to generate smoke, and the smoke amount is adjusted by controlling the power of the heating wire.

The existing electronic cigarette cannot be automatically switched among a working state, a standby state and a dormant state, so that the power consumption of the electronic cigarette is high, and the service time and the service life of a battery are influenced.

Therefore, it is desirable that the cigarette rod of the electronic cigarette automatically perform the operation state transition according to the connection condition with the cartridge, so that the cigarette rod automatically enters the shipping mode with low power consumption after the cigarette rod and the cartridge are separated, and the cigarette rod automatically exits the shipping mode after the cigarette rod and the cartridge are connected.

Disclosure of Invention

The technical problem that this application embodiment will solve lies in, provides a tobacco rod, electron cigarette. The problem of among the prior art after tobacco rod and cigarette bullet are connected, the tobacco rod can not withdraw from the ship mode automatically is solved, need consider simultaneously on the control circuit basis of current tobacco rod, realize reducing as far as possible the components and parts change in limited space, reduce the intensification of realization cost as far as possible and improve the problem. And through inserting the cigarette bullet, the cigarette pole withdraws from the shipping mode automatically, extracts the cigarette bullet, and the cigarette pole gets into the shipping mode automatically, does not change user's use habit, promotes user's experience.

In order to solve the above technical problem, a first aspect of the embodiments of the present application provides a tobacco rod, where the tobacco rod includes a battery and a battery protection circuit, where the battery protection circuit includes a power supply pin electrically connected to a positive electrode of the battery, a power ground pin electrically connected to a negative electrode of the battery, and a system ground pin; the cigarette rod comprises a thimble anode and a thimble cathode which are used for being electrically connected with the cigarette cartridge, the system grounding pin is electrically connected with the thimble cathode, two NMOS tubes which are connected in series are connected between the power grounding pin (GND) and the thimble anode in series, wherein the source electrode of a first NMOS tube is electrically connected with the source electrode of a second NMOS tube, the connected electrode which is electrically connected with the thimble anode corresponds to the drain electrode of the first NMOS tube, the connected electrode which is electrically connected with the power grounding pin (GND) corresponds to the drain electrode of the second NMOS tube, and the control electrode which is electrically connected with the system grounding pin (VM) corresponds to the common electric connection part of the grid electrode of the first NMOS tube and the grid electrode of the second NMOS tube; when the tobacco rod is in a shipping mode, the system grounding pin and the power grounding pin are disconnected; the smoke cartridge is connected with the smoke rod, and the battery protection circuit detects the voltage change of the system grounding pin and controls the smoke rod to exit the shipping mode.

Preferably, the smoke cartridge is connected with the smoke rod, the internal detection circuit of the battery protection circuit detects that the voltage of the system grounding pin is lower than a preset threshold value and outputs a second state signal, and the battery protection circuit controls the smoke rod to exit the shipping mode according to the second state signal.

Preferably, the battery protection circuit includes one end of a first switch unit electrically connected to a system ground pin, the other end of the first switch unit is electrically connected to a first internal resistor Rn1 and then to the power supply pin, and the system ground pin is further electrically connected to an internal detection circuit; when the cigarette rod is in a shipping mode, the second switch unit between the system grounding pin and the power supply grounding pin is disconnected, the first switch unit is connected, and the internal detection circuit detects that the voltage of the system grounding pin is equal to the voltage of a battery connected to the power supply pin and outputs a first state signal; the smoke cartridge is connected with the smoke rod, the internal resistance of the smoke cartridge is connected between the drain electrode and the grid electrode of the first NMOS tube, so that discharge is carried out between the system grounding pin and a power supply grounding pin (GND) through the internal resistance of the smoke cartridge, the first NMOS tube and the second NMOS tube, the voltage V1 of the system grounding pin is reduced along with the discharge of the first NMOS tube and the second NMOS tube, and the internal detection circuit detects that the voltage of the system grounding pin is lower than a threshold value and outputs a second state signal; and the battery protection chip controls the tobacco rod to exit the shipping mode according to the second state signal.

Preferably, the internal detection circuit is a not gate, the voltage of the system ground pin is approximately equal to the voltage of the battery when the tobacco rod is in the shipping mode, and the not gate outputs a first state signal which is a logic low level signal; the smoke cartridge is connected with the smoke rod, the detection voltage of the system grounding pin is smaller than the voltage of the battery, and the NOT gate outputs a second state signal which is a logic high level signal.

Preferably, the cigarette rod further comprises a system circuit, wherein the system circuit comprises a first power pin electrically connected with the positive electrode of the battery, a first grounding pin electrically connected with the grounding pin of the system, a first input/output pin electrically connected with the positive electrode of the thimble, and a second input/output pin electrically connected with the shipping control pin of the battery protection circuit.

Preferably, the smoke cartridge is separated from the smoke rod, the system circuit inputs a shipping entering signal to the battery protection circuit through the second input/output pin after detecting the voltage change of the first input/output pin, and the battery protection circuit controls the smoke rod to enter a shipping mode.

Preferably, the cigarette rod further comprises a system circuit, the positive electrode of the thimble is further electrically connected with the first end of the first external switch unit, the second end of the first external switch unit is electrically connected with the positive electrode of the battery after being electrically connected with the second external resistor, the control end of the first external switch unit is electrically connected with the third input/output pin of the system circuit, and the system circuit controls the on/off of the first external switch unit through the third input/output pin; when the cigarette cartridge is connected with the cigarette rod, the cigarette cartridge internal resistance is connected between the positive pole of the thimble and the negative pole of the thimble, the system circuit controls the conduction of the first external switch unit, and the system circuit detects that the input voltage of the first input/output pin terminal is low voltage; when the cigarette cartridge is separated from the cigarette rod, the system circuit detects that the input voltage of the first input/output pin is close to equal to the positive voltage of the battery, the system circuit detects that the cigarette cartridge is pulled out of the cigarette rod according to the change of the input voltage of the first input/output pin end, a shipping signal is input into the battery protection circuit through the second input/output pin, and the battery protection circuit controls the cigarette rod to enter a shipping mode after receiving the shipping signal sent by the system circuit.

Preferably, the tobacco rod further comprises a system circuit, the system circuit comprises a first power pin electrically connected with the positive electrode of the battery, a first grounding pin electrically connected with a system grounding pin, and also comprises a first input/output pin electrically connected with the positive electrode of the thimble, a second input/output pin electrically connected with one end of a second resistor, the other end of the second resistor is electrically connected with a second capacitor, meanwhile, the control end of the second external switch unit is electrically connected, the other end of the second capacitor is connected with a system grounding pin, one connecting end of the second external switch unit is electrically connected with a third resistor R3, the other end of the second external switch unit is connected with the system grounding pin, the other end of the third resistor is connected with a first resistor R1, meanwhile, the power supply device is also connected with a power supply pin VDD and a first capacitor, the other end of the first resistor is connected with the anode of the battery, and the other end of the first capacitor is connected with the cathode of the battery and a power grounding pin.

Preferably, the smoke cartridge is separated from the smoke rod, the system circuit detects a voltage change of the first input/output pin, then outputs a pulse signal through the second input/output pin, controls the second external switch unit to be switched on during the pulse high level duration, and changes the voltage of the power supply pin from a battery voltage to: V1R 3

(R3+ R1), wherein, the battery voltage V1, the first resistor R1, the third resistor R3, the battery protection circuit controls the smoke rod to enter the shipping mode.

An electronic cigarette comprising the tobacco rod of any one of the preceding claims.

The embodiment of the application has the following beneficial effects: the internal circuit of the tobacco rod under the prior art is only slightly changed, the ship transportation control can be automatically quitted after the smoke cartridge is inserted into the tobacco rod by adding two NMOS tubes which are connected in series, the change of a hardware circuit is small, and the implementation and the low cost can be realized in a limited space. The battery protection circuit of the tobacco rod enters a shipping mode by pulling the cigarette cartridge out of the tobacco rod, the electric quantity of the battery can be greatly saved, in the shipping mode, at least partial units of the battery protection circuit are stopped supplying power, so that the battery only needs to supply power to a few circuit units such as an internal detection circuit INV1 of the battery protection circuit, the electric quantity consumption of the battery is further reduced, the current consumption of the tobacco rod can be reduced, the current consumption can be as low as several nA/h, the electric quantity keeping time of the battery can be prolonged, even if the capacity of the battery is small, the electric quantity of the battery can be kept for half a year to one year in the shipping mode, after a user takes the electronic cigarette, the user only needs to insert the cigarette cartridge to enable the battery protection circuit to exit the shipping mode, the electronic cigarette can be normally used after being inserted into the cigarette cartridge, and the user experience is improved, the quality problem that the user thinks the electron cigarette itself by mistake is prevented. Through inserting the cigarette bullet, the tobacco rod withdraws from the shipping mode, does not change user's use habit, promotes user's experience.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic circuit diagram of an electronic device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the system circuitry and connections of FIG. 1;

FIG. 3 is a schematic diagram of the internal circuitry of the battery protection circuit of FIG. 1;

fig. 4 is a waveform diagram of the signal received by the shipping control pin CTL and the first timing unit output signal;

fig. 5 is a schematic circuit diagram of an electronic device according to the first and fifth embodiments of the present application;

fig. 6 is a schematic circuit diagram of an electronic device according to a first embodiment and a sixth embodiment of the present application;

fig. 7 is a schematic circuit diagram of an electronic device according to a second embodiment and a fourth embodiment of the present application;

fig. 8 is a schematic circuit diagram of an electronic device according to a second embodiment and a fifth embodiment of the present application;

FIG. 9 is a schematic circuit diagram of an electronic device according to a second embodiment of the present application;

FIG. 10 is a schematic circuit diagram of an electronic device according to a fifth embodiment of the present application;

FIG. 11 is a schematic circuit diagram of an electronic device according to a sixth embodiment of the present application;

FIG. 12 is a schematic circuit diagram of an electronic device according to a third embodiment of the present application;

FIG. 13 is a schematic circuit diagram of an electronic device according to a third embodiment of the present application;

FIG. 14 is a schematic circuit diagram of an electronic device according to a seventh embodiment of the present application;

FIG. 15 is a schematic circuit diagram of a first timing unit of the present application;

fig. 16 is a circuit schematic diagram of the electronic device of fig. 1 in combination with fig. 2.

Description of the figure numbers:

the battery protection circuit 100, the system circuit 200, the battery 300, the power supply pin VDD, the power ground pin GND, the system ground pin VM, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the first capacitor C1, the second capacitor C2, the first internal resistor Rn1, the second external resistor Rn2, the first switching unit K1, the second switching unit K2, the first external switching unit M1, the second external switching unit M2, the internal detection circuit INV1, the first status signal S1, the second status signal S2, the first NMOS transistor N1, the second NMOS transistor N2, the internal resistance Rd, the first input/output pin I/O-1, the second input/output pin I/O-2, the third input/O-3, the C-capacitor, the R-resistor, the charge management IC 596400, the battery voltage V2, and the low level signal V0, high level signal 1.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," and any variations thereof, as appearing in the specification, claims and drawings of this application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or acts is not limited to the listed steps or elements, but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.

The embodiment of the application provides an electronic device, and the electronic device is an electronic cigarette. Referring to fig. 1, the cigarette rod of the electronic cigarette includes a battery protection circuit 100, a system circuit 200, a battery 300, an ejector pin anode and an ejector pin cathode, the battery protection circuit 100 includes a power supply pin VDD electrically connected to the anode of the battery 300, a power ground pin GND electrically connected to the cathode of the battery 300, and a system ground pin VM electrically connected to the ejector pin cathode of the cigarette rod, and a voltage dividing resistor Rf may be connected in series between the power ground pin GND and the ejector pin anode. The system circuit 200 comprises a first power supply pin P electrically connected with the anode of the battery 300, a first grounding pin G electrically connected with the system grounding pin VM, a first input/output pin I/O-1 electrically connected with the anode of the thimble of the smoke rod, and a second input/output pin I/O-2 electrically connected with the battery protection circuit 100; the battery protection circuit 100 plays a role of protection, for example, protecting the battery 300 when the battery 300 is overcharged or overdischarged; since how the battery protection circuit 100 protects the battery 300 from overcharge and overdischarge is a common technical means in the art, it is not described herein again. In this embodiment, the number of the batteries 300 may be one or more, and when there are a plurality of batteries, the plurality of batteries may be connected in parallel, in series, or in a mixture of series and parallel; the battery 300 is preferably a lithium battery, the capacity of the battery 300 is 900mAH to 2000mAH, and preferably, the capacity of the battery 300 is 1000mAH to 1200mAH, and the volume and the capacity of the battery 300 are both suitable, so that the battery can be conveniently configured in the tobacco rod of the electronic cigarette. However, since the capacity of the battery 300 is small, how the amount of electricity of the battery 300 is maintained for a long time becomes an important issue. In the present embodiment, the battery protection circuit 100 is a technology commonly used in the field of integrated circuits, and is intended to combine a plurality of integrated circuits with specific functions on one chip to form a system or product, which includes a finished hardware system and embedded software carried by the system or product. The battery protection circuit 100 has significant advantages in various aspects such as performance, cost, power consumption, reliability, life cycle and application range; in the present embodiment, a part of the circuits integrated in the battery protection circuit 100, such as the resistor and the capacitor, may be externally connected to the system circuit 200. In this embodiment, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for voltage stabilization filtering. Further, the capacitor C may not be provided between the battery 300 and the battery protection circuit 100. In addition, in other embodiments of the present application, other circuits or electronic elements may be disposed between the battery 300 and the battery protection circuit 100.

In this embodiment, referring to fig. 2, the positive electrode of the thimble is further electrically connected to a first end of the first external switch unit M1, a second end of the first external switch unit M1 is electrically connected to the second external resistor Rn2 and then to the power supply pin VDD, a control end of the first external switch unit M1 is electrically connected to a third input/output pin I/O-3 of the system circuit 200, the system circuit 200 controls the first external switch unit M1 to be turned on and off through the third input/output pin, and the first external switch unit M1 is a MOS transistor, such as an NMOS transistor or a PMOS transistor.

When the cigarette cartridge is connected to the cigarette rod, the cigarette cartridge internal resistance Rd is connected between the positive pole of the thimble and the negative pole of the thimble, the system circuit 200 controls the conduction of the first external switch unit M1, and the system circuit 200 detects that the input voltage at the I/O-1 end of the first input/output pin is:

v1 represents the voltage value of the battery positive electrode. The resistance value of the internal resistance Rd of the cartridge is usually very small, and is significantly smaller than that of the second external resistance Rn2, so the input voltage detected at this time is significantly smaller than the voltage value V1 of the battery anode, and approaches the vicinity of zero voltage.

When the cigarette cartridge is separated from the cigarette rod, the system circuit 200 detects that the input voltage of the first input/output pin I/O-1 is close to the battery positive voltage V1, the system circuit 200 detects that the cigarette cartridge is pulled out of the cigarette rod according to the change of the input voltage of the first input/output pin I/O-1, after waiting for the preset time T, the system circuit 200 inputs a signal for entering shipping to the battery protection circuit 100 through the second input/output pin I/O-2, and the battery protection circuit 100 controls the cigarette rod to enter a shipping mode after receiving the shipping signal sent by the system circuit 200.

The smoke cartridge is separated from the tobacco rod, after the system circuit detects the voltage change of the first input/output pin, a shipping signal is input into the battery protection circuit through the second input/output pin, and the battery protection circuit controls the tobacco rod to enter a shipping mode. Other circuit implementation forms can be realized, and the first external switch unit M1 and the second external resistor Rn2 can also be arranged in the system circuit.

In this embodiment, referring to fig. 3, the battery protection circuit 100 includes a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected to a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected to a power supply pin VDD after being electrically connected to a first internal resistance Rn1, the system ground pin VM is also electrically connected to a first end of the internal detection circuit INV1 and a second switch unit K2, and a second end of the second switch unit K2 is electrically connected to a power ground pin GND of the battery protection circuit 100;

when the smoke rod is in the shipping mode, the second switch unit K2 is disconnected, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage, the internal detection circuit INV1 detects that the voltage of the system ground pin VM approaches the varying battery voltage, the output terminal SS1 of the internal detection circuit INV1 outputs a first state signal S1, and the first state signal S1 is a logic low level signal 0.

When the cigarette bullet is connected with the cigarette rod, it has cigarette bullet internal resistance Rd and divider resistance Rf to form the return circuit to concatenate between system ground pin VM and power ground pin GND, and power supply pin VDD voltage is close battery voltage V1, from this at the detection voltage of system ground pin VM:

generally, the resistance value of the internal resistance Rd of the cartridge is very small, and is significantly smaller than that of the first internal resistance Rn1, and the resistance values of the first internal resistance Rn1 and the voltage dividing resistance Rf may be set, for example, the resistance values of the two are close, or the voltage dividing resistance Rf is smaller than the first internal resistance Rn, so that the detected input voltage is significantly smaller than the battery voltage V1, including a voltage value smaller than V1/2, or smaller. Therefore, the internal detection circuit INV1 detects that the voltage variation of the system ground pin VM is lower than the preset voltage threshold of the internal detection circuit INV1, triggers the internal detection circuit INV1 to flip state and outputs the second state signal S2, the second state signal S2 is a logic high level signal 1, and the battery protection circuit 100 controls the smoke rod to exit the shipping mode according to the second state signal S2.

In this embodiment, as shown in fig. 1, the battery protection circuit 100 may further include a shipping control pin CTL. The shipping control pin CTL is configured to be electrically connected to the second input/output port I/O-2 of the system circuit 200, and the battery protection circuit 100 receives a first signal for entering the shipping mode through the shipping control pin CTL. In this embodiment, the number of shipping control pins CTL is one. The present application is not limited thereto and the number of shipping control pins CTL may be plural in other embodiments of the present application. The battery protection circuit 100 further includes an overcharge voltage protection unit, an overdischarge voltage protection unit, a discharge overcurrent protection unit, a reference voltage generation unit, a frequency generation unit, and a wake-up unit, and the battery 300 stops supplying power to the battery protection circuit 100 except for the wake-up unit or the internal detection unit INV1 after entering the ship mode. The awakening unit is a charging detection unit, and when the charging detection unit detects a charging signal, the tobacco rod can exit the shipping mode.

In this embodiment, the first signal is a digital code signal, which is pre-agreed at the design time of the battery protection circuit 100 and the system circuit 200, and when the shipping control pin CTL receives the code signal, the battery protection circuit 100 generates a shipping control signal to enter the shipping mode. For example, the first signal includes two periods of time: the first time period is a high level signal, the second time period is a pulse signal of a predetermined number, where the high level signal is used to trigger an element corresponding to the battery protection circuit 100 to activate, for example, to tell the element corresponding to the battery protection circuit 100 to prepare to count or count, and then the element corresponding to the battery protection circuit 100 counts or counts the received pulse signal (for example, different pulse durations are different), when the number of pulses meets a preset requirement, the battery protection circuit 100 generates a shipping control signal, and when the number of pulses does not meet the preset requirement, the element corresponding to the battery protection circuit 100 returns to a state where activation is not started. Since the first signal is a coded signal of a protocol of the battery protection circuit 100 and the system circuit 200, a specific form of the first signal is not limited, and the first signal may be a complex code or a simple code, and the battery protection circuit 100 may be identified as long as the coded signal of the battery protection circuit 100 and the system circuit 200 is a coded signal of a protocol in advance.

In the embodiment, the overcharge voltage protection unit is used to protect the battery 300 when detecting that the battery voltage is too high during the charging process of the battery 300, for example, stopping charging the battery 300, and so on, so as to prevent the battery 300 from being damaged or causing a safety problem.

In the embodiment, the over-discharge voltage protection unit is used for protecting the battery 300 when detecting that the battery voltage is too low during the discharging process of the battery 300, for example, controlling the battery 300 to discharge only to the minimum extent, and generally stopping supplying power to the internal system circuit of the smoke rod and stopping supplying power to the circuits of the battery protection circuit 100 except the charging detection unit, so as to prevent the battery 300 from being over-discharged and causing permanent damage to the battery 300.

In the embodiment, the discharge overcurrent protection unit is used for protecting the battery 300 when detecting that the discharge current is too large during the discharge of the battery 300, for example, the battery 300 stops discharging, and the like, so as to prevent the battery 300 from being permanently damaged or having a safety problem due to the too large discharge current.

In the present embodiment, the reference voltage generating unit is used to generate the reference voltage required by the battery protection circuit 100, and the frequency generating unit is used to generate different frequencies. In this embodiment, the overcharge voltage protection unit, the overdischarge voltage protection unit, the discharge overcurrent protection unit, the reference voltage generation unit, and the frequency generation unit are conventional circuits in the art and are not described herein again.

In this embodiment, the wake-up unit is a charging detection unit for detecting whether the cigarette rod is connected to the power supply through the charger to charge the battery 300, and after the cigarette rod is connected to the power supply through the charger, the charging detection unit detects a charging signal to charge the battery 300. In this embodiment, if the over-discharge voltage protection unit protects the battery 300, and the charging detection unit detects the charging signal at this time, the over-discharge voltage protection of the battery 300 is exited, that is, the system circuit inside the cigarette rod is normally powered again and the battery protection circuit 100 is normally powered.

In this embodiment, the wake-up unit continues to be powered by the battery 300 during the shipping mode, and the wake-up unit may be used to exit the battery protection circuit 100 from the shipping mode, which is one embodiment of exiting the smoke rod from the shipping mode. Since the wake-up unit is a charging detection circuit, which is originally the circuit of the battery protection circuit 100, the design can save cost. In this embodiment, when the cigarette rod is charged, the charging detection circuit detects the charging signal, the battery protection circuit 100 automatically exits the shipping mode, and the battery 300 can maintain the electric quantity for a long time, so that the cigarette can be used after being inserted into the cigarette rod. In addition, in other embodiments of the present application, the wake-up unit may not be a charging detection circuit, but may also be another newly added hardware circuit dedicated to enabling the battery protection circuit 100 to exit the shipping mode, and a person skilled in the art may design the circuit according to specific requirements.

In this embodiment, when the electronic cigarette needs to be transported for a long distance or stored for a long time, the battery protection circuit 100 of the cigarette holder can enter the shipping mode, which can greatly save the power of the battery 300, and in the shipping mode, most units of the battery protection circuit 100 are stopped to supply power, so that the battery 300 only needs to supply power to a few circuit units such as the internal detection circuit INV1 of the battery protection circuit 100, thereby further reducing the power consumption of the battery 300, reducing the current consumption of the cigarette holder, reducing the current consumption to several nA/h, and increasing the power retention time of the battery 300, even if the capacity of the battery 300 is relatively small, the power of the battery 300 can be retained for half a year to one year in the shipping mode, and when the user takes the electronic cigarette, the user only needs to insert the cigarette cartridge to withdraw the battery protection circuit 100 from the shipping mode, the electron cigarette inserts the cigarette bullet and can normal use, because the battery has still kept more storage electric quantity and need not to charge earlier, has promoted user's experience, prevents that the user from mistaking for electron cigarette quality problems itself.

The following are some ways of entering the shipping mode by pulling the cartridge out of the tobacco rod, which are described separately below. Of course, the manner of entering the shipping mode by the cigarette rod is not limited to the following, and in other embodiments of the present application, other conventional circuits may be provided by those skilled in the art to enter the shipping mode by the cigarette rod.

First embodiment

In an embodiment of the present application, please refer to fig. 1, fig. 2, fig. 5, fig. 6, fig. 10, and fig. 11. When the system circuitry 200 detects that the cartridge removal time is greater than or equal to the predetermined time T, the tobacco pipe enters the ship mode. Specifically, as shown in fig. 1 and fig. 2, the positive electrode and the negative electrode of the thimble of the smoke rod are used for being electrically connected with the smoke cartridge, the system ground pin VM is electrically connected with the negative electrode of the thimble, the system circuit 200 includes a first power supply pin P electrically connected with the positive electrode of the battery 300, a first ground pin G electrically connected with the system ground pin VM, a first input/output pin I/O-1 electrically connected with the positive electrode of the thimble of the smoke rod, and a second input/output pin I/O-2 electrically connected with the shipping pin CTL of the battery protection circuit 100; the positive electrode of the thimble is further electrically connected to a first end of a first external switch unit M1, a second end of the first external switch unit M1 is electrically connected to a power supply pin VDD behind the second external resistor Rn2, a control end of the first external switch unit M1 is electrically connected to a third input/output pin I/O-3 of the system circuit 200, the system circuit 200 controls the first external switch unit M1 to be turned on and off through the third input/output pin, and the first external switch unit is a MOS transistor, such as an NMOS transistor or a PMOS transistor. A voltage dividing resistor Rf or a switch tube may be connected in series between the power ground pin GND and the thimble anode, the number of the switch tubes may be one or more, the switch tubes are MOS tubes, such as NMOS tubes or PMOS tubes, and the present embodiment takes NMOS tubes as an example; as shown in fig. 5 or fig. 6, when an NMOS tube is connected in series between the power ground pin GND and the thimble positive electrode, the drain of the first NMOS tube N1 is electrically connected to the thimble positive electrode, the source of the first NMOS tube N1 is electrically connected to the power ground pin GND, and the gate of the first NMOS tube N1 is electrically connected to the system ground pin VM; when two NMOS tubes, namely a first NMOS tube N1 and a second NMOS tube N2, are connected in series between a power ground pin GND and the positive electrode of the thimble, the source electrode of the first NMOS tube N1 is electrically connected with the source electrode of the second NMOS tube N2, the drain electrode of the first NMOS tube N1 is electrically connected with the positive electrode of the thimble, the drain electrode of the second NMOS tube N2 is electrically connected with the power ground pin GND, and the common electrical connection position of the grid electrode of the first NMOS tube N1 and the grid electrode of the second NMOS tube N2 is electrically connected with a system ground pin VM. In this embodiment, the switching tubes may also be integrated into the battery protection circuit 100, the number of the switching tubes may be one or more, the switching tubes are MOS tubes, such as NMOS tubes or PMOS tubes, and the NMOS tubes are taken as an example in this embodiment; as shown in fig. 10, when an NMOS transistor is integrated into the battery protection circuit 100, the first NMOS transistor N1 is electrically connected between the power ground pin GND and the test pin AT, the drain of the first NMOS transistor N1 is electrically connected to the test pin AT, the source is electrically connected to the power ground pin GND, and the gate is electrically connected to the system ground pin VM through the fourth resistor R4; as shown in fig. 11, when two NMOS transistors are integrated into the battery protection circuit 100, two NMOS transistors are connected in series between the power ground pin GND and the test pin AT, wherein the source of the first NMOS transistor N1 is electrically connected to the source of the second NMOS transistor N2, the drain of the first NMOS transistor N1 is electrically connected to the test pin AT, the drain of the second NMOS transistor N2 is electrically connected to the power ground pin GND, and the common electrical connection between the gate of the first NMOS transistor N1 and the gate of the second NMOS transistor N2 is electrically connected to the system ground pin VM through the fourth resistor R4. The power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected with the positive electrode and the negative electrode of the battery 300, a first resistor R1 and a first capacitor C1 are further arranged between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are arranged for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100.

When the cigarette cartridge is connected to the cigarette rod, the cigarette cartridge internal resistance Rd is connected between the positive pole of the thimble and the negative pole of the thimble, the system circuit 200 controls the conduction of the first external switch unit M1, and the system circuit 200 detects that the input voltage at the first input/output pin I/O-1 end is:

v1 represents the voltage value of the positive electrode of the battery, and the system circuit 200 detects that the cartridge is connected to the cigarette rod according to the change of the input voltage at the I/O-1 end of the first input/output pin.

When the cigarette cartridge is separated from the cigarette rod, the system circuit 200 detects that the input voltage of the first input/output pin I/O-1 approaches the battery positive voltage V1, the system circuit 200 detects that the cigarette cartridge is pulled out of the cigarette rod according to the change of the input voltage of the first input/output pin I/O-1, after waiting for a predetermined time T, the system circuit 200 inputs a first signal entering a shipping mode to the battery protection circuit 100 through the second input/output pin I/O-2, and the specific form of the first signal is various, for example, a pulse signal, a continuous high-level signal, a continuous low-level signal, or a combination of these signals, which is not limited herein; in this embodiment, taking a continuous high-level signal as an example, the battery protection circuit 100 further includes a first timing unit and a resistor R, as shown in fig. 15, where the shipping control pin CTL defaults to a low level, in this embodiment, the shipping control pin CTL is grounded via the resistor R to achieve the low level, the first timing unit outputs a low-level signal under normal conditions, and the shipping control pin CTL is electrically connected to the first timing unit. As shown in fig. 4, when the shipping control pin CTL receives the first signal that is a high level signal, that is, when the signal received by the shipping control pin CTL is changed from a low level to a high level, the first timing unit triggers timing with a rising edge, when the duration of the high level signal received by the first timing unit is greater than or equal to a first predetermined time period T1, the output signal of the first timing unit is changed from a low level to a high level, the high level signal at this time is the shipping control signal, and the battery protection circuit 100 receives the shipping control signal sent by the system circuit 200 and then controls the smoke rod to enter the shipping mode. The first predetermined time period T1 is preset by the battery protection circuit 100, and the first predetermined time period T1 is, for example, 10 seconds, 5 seconds, 3 seconds, 1 second, etc., so that the design can prevent false triggering. In the present embodiment, the first timing unit is integrated inside the battery protection circuit 100. In addition, in other embodiments of the present application, the first timing unit may be provided separately from the battery protection circuit 100.

In this embodiment, in the stage of factory acceptance of the cigarette rod, the cigarette rod needs to enter the shipping mode, a second signal is sent to the system circuit 200 through the positive pole of the thimble of the cigarette rod, the system circuit 200 receives the signal and then inputs a first signal entering the shipping mode to the battery protection circuit 100 through the second input/output pin I/O-2, and the battery protection circuit 100 receives a shipping control signal sent by the system circuit 200 and then controls the cigarette rod to enter the shipping mode. Specifically, the tester sends a second signal to the first input/output pin I/O-1 of the system circuit 200 through the positive pole of the thimble of the cigarette rod, and the second signal is a coded signal of the protocol of the battery protection circuit 100 and the system circuit 200, so that the specific form of the second signal is not limited, and the second signal may be a complex code or a simple code, for example, the specific form of the second signal may be a pulse signal, a continuous high-level signal, a continuous low-level signal, or a combination of these signals. In this embodiment, taking the high-low level signal as an example, after the system circuit 200 receives the second signal through the first input/output pin I/O-1, the system circuit 200 inputs the first signal entering the shipping mode to the battery protection circuit 100 through the second input/output pin I/O-2, in this embodiment, the first signal takes the continuous high level signal as an example, when the shipping control pin CTL receives the first signal as the high level signal, that is, when the signal received by the shipping control pin CTL changes from the low level to the high level, the first timing unit triggers timing with a rising edge, when the duration of the high level signal received by the first timing unit is greater than or equal to the first predetermined time period T1, the output signal of the first timing unit changes from the low level to the high level, and the high level signal is the shipping control signal, the battery protection circuit 100 controls the tobacco rod to enter the shipping mode after receiving the shipping control signal sent by the system circuit 200. The first predetermined time period T1 is preset by the battery protection circuit 100, and the first predetermined time period T1 is, for example, 10 seconds, 5 seconds, 3 seconds, 1 second, etc., so that the design can prevent false triggering.

Second embodiment

In another embodiment of the present application, referring to fig. 2, 7, 8 and 9, when the system circuit 200 detects that the cartridge removal time is greater than or equal to the predetermined time T, the tobacco rod enters the shipping mode. The tobacco rod comprises a battery 300, a system circuit 200 and a battery protection circuit 100, wherein the system circuit 200 comprises a first power pin P electrically connected with the anode of the battery 300, a first grounding pin G electrically connected with a system grounding pin VM, and also comprises a first input/output pin I/O-1 electrically connected with the positive electrode of the thimble, a second input/output pin I/O-2 electrically connected with a first end of a second resistor R2, a second end of the second resistor R2 electrically connected with a first end of a second capacitor C2, meanwhile, the control end of the second external switch unit M2 is electrically connected, the second end of the second capacitor C2 is connected to the system ground pin VM, the first end of the second external switch unit M2 is electrically connected to the first end of the third resistor R3, the second end of the second external switch unit M2 is electrically connected to the system ground pin VM, the second end of the third resistor R3 is connected to the first resistor R1, and the power supply pin VDD and the first capacitor C1 are also connected; the positive pole and the negative pole of the thimble of the cigarette rod are used for being electrically connected with the cigarette bullet, the system grounding pin VM is electrically connected with the negative pole of the thimble, a voltage dividing resistor Rf or a switch tube can be further connected in series between the power grounding pin GND and the positive pole of the thimble, the number of the switch tubes can be one or more, and the switch tubes are MOS tubes, such as NMOS tubes or PMOS tubes. In the embodiment, an NMOS transistor is taken as an example; as shown in fig. 8, when an NMOS transistor is connected in series between the power ground pin GND and the thimble positive electrode, the drain of the first NMOS transistor N1 is electrically connected to the thimble positive electrode, the source of the first NMOS transistor N1 is electrically connected to the power ground pin GND, and the gate of the first NMOS transistor N1 is electrically connected to the system ground pin VM; as shown in fig. 9, when two NMOS transistors, a first NMOS transistor N1 and a second NMOS transistor N2, are connected in series between the power ground pin GND and the thimble positive electrode, the source of the first NMOS transistor N1 is electrically connected to the source of the second NMOS transistor N2, the drain of the first NMOS transistor N1 is electrically connected to the thimble positive electrode, the drain of the second NMOS transistor N2 is electrically connected to the power ground pin GND, and the common electrical connection between the gate of the first NMOS transistor N1 and the gate of the second NMOS transistor N2 is electrically connected to the system ground pin VM. The positive electrode of the thimble is further electrically connected to a first end of a first external switch unit M1, a second end of the first external switch unit M1 is electrically connected to a power supply pin VDD behind the second external resistor Rn2, a control end of the first external switch unit M1 is electrically connected to a third input/output pin I/O-3 of the system circuit 200, the system circuit 200 controls the first external switch unit M1 to be turned on and off through the third input/output pin, and the first external switch unit M1 is an MOS transistor, such as an NMOS transistor or a PMOS transistor. The power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100.

the battery voltage V1, usually the resistance of the third resistor R3 is significantly smaller than the first resistor R1, so the voltage after pulling down is also significantly lower than the battery voltage, which is beneficial to identify the obvious change of the voltage before and after, and the system circuit 200 detects whether the cigarette rod is connected to the cartridge according to the change of the input voltage at the first input/output pin I/O-1.

When the cigarette cartridge is separated from the cigarette rod, the system circuit 200 detects that the input voltage of the first input/output pin I/O-1 approaches the battery positive voltage V1, the system circuit 200 detects that the cigarette cartridge is pulled out of the cigarette rod according to the change of the input voltage of the first input/output pin I/O-1, after waiting for a predetermined time T, the system circuit 200 inputs a first signal entering a shipping mode to the battery protection circuit 100 through the second input/output pin I/O-2, and the specific form of the first signal is various, for example, a pulse signal, a continuous high-level signal, a continuous low-level signal, or a combination of these signals, which is not limited herein; in this embodiment, taking a sustained high-level signal as an example, during the high-level duration, the time that the high level passes through the second resistor R2 and the second capacitor C2 is longer than the overdischarge protection delay time, and the second external switch unit M2 is controlled to be turned on, where the second external switch unit M2 may be a MOS transistor or a triode, and at this time, the voltage of the power supply pin VDD is pulled down to: v1 × R3/(R3+ R1), wherein the cell voltage V1. When the voltage at the power supply pin VDD is less than the over-discharge protection voltage of the battery protection circuit 100 and the over-discharge protection delay time is reached, the battery protection circuit 100 controls the tobacco rod to enter the shipping mode.

In this embodiment, a second signal is sent to the system circuit 200 through the positive pole of the thimble of the smoke rod, the system circuit 200 receives the second signal and inputs the first signal entering the shipping mode to the battery protection circuit 100 through the second input/output pin I/O-2, and the battery protection circuit 100 receives the shipping control signal sent by the system circuit 200 and then controls the smoke rod to enter the shipping mode. Specifically, the tester sends a second signal to the first input/output pin I/O-1 of the system circuit 200 through the positive pole of the thimble of the cigarette rod, and the second signal is a coded signal of the protocol of the battery protection circuit 100 and the system circuit 200, so that the specific form of the second signal is not limited, and the second signal may be a complex code or a simple code, for example, the specific form of the second signal may be a pulse signal, a continuous high-level signal, a continuous low-level signal, or a combination of these signals. In this embodiment, taking a high-low level signal as an example, when the system circuit 200 receives the second signal through the first input/output pin I/O-1, the system circuit 200 inputs the first signal entering the shipping mode to the battery protection circuit 100 through the second input/output pin I/O-2, in this embodiment, taking a continuous high level signal as an example, during the high level duration, the high level passes through the second resistor R2 and the second capacitor C2 and is greater than the overdischarge protection delay time, so as to control the second external switch unit M2 to be turned on, the third switch may be a MOS transistor or a triode, and at this time, the voltage at the power supply pin VDD is: v1 × R3/(R3+ R1), wherein the cell voltage V1. When the voltage at the power supply pin VDD of the power supply is less than the over-discharge protection voltage of the battery protection circuit 100 and the over-discharge protection delay time is reached, the battery protection circuit 100 controls the tobacco rod to enter the shipping mode.

Third embodiment

In another embodiment of the present application, referring to fig. 12 and 13, when the battery protection circuit 100 detects that the cartridge removal time is greater than or equal to the predetermined time T, the tobacco rod enters the shipping mode. Specifically, the positive electrode and the negative electrode of the thimble of the cigarette rod are used for being electrically connected with the cigarette cartridge, the system grounding pin VM is electrically connected with the negative electrode of the thimble, the battery protection circuit 100 comprises a power supply pin VDD electrically connected with the positive electrode of the battery 300, a power grounding pin GND electrically connected with the negative electrode of the battery 300, a system grounding pin VM and a detection pin AT, and the detection pin AT is electrically connected with the positive electrode of the thimble; in the battery protection circuit 100, a third switching unit M3 is connected in series between the detection pin AT and the power supply pin VDD, a control end of the third switching unit M3 is electrically connected to the sleep detection circuit, the sleep detection circuit intermittently controls on and off of the third switching unit M3, a switching tube may also be connected in series between the power ground pin GND and the thimble anode, the number of the switching tubes may be one or more, and the switching tube is an MOS tube, such as an NMOS tube or a PMOS tube. In this embodiment, an NMOS transistor is taken as an example;

as shown in fig. 12, the drain of the first NMOS transistor N1 is electrically connected to the detection pin AT, the source is electrically connected to the power ground pin GND, and the gate is electrically connected to the system ground pin VM through the fourth resistor R4;

as shown in fig. 13, when two NMOS transistors are integrated into the battery protection circuit 100, two NMOS transistors are connected in series between the power ground pin GND and the detection pin AT, wherein the source of the first NMOS transistor N1 is electrically connected to the source of the second NMOS transistor N2, the drain of the first NMOS transistor N1 electrically connected to the detection pin AT is electrically connected to the drain of the second NMOS transistor N2 electrically connected to the power ground pin GND, and the common electrical connection between the gate of the first NMOS transistor N1 and the gate of the second NMOS transistor N2 is electrically connected to the system ground pin VM through a fourth resistor R4.

The power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100.

When the cigarette cartridge is removed from the cigarette rod, the dormancy detection circuit controls the third switch unit M3 to be turned on AT a fixed frequency, the voltage of the detection pin AT is pulled up to the battery voltage V1, that is, the voltage of the thimble + is the battery voltage V1, so as to determine that the cigarette cartridge has been removed from the cigarette rod, after waiting for a predetermined time T (the time T can be arbitrarily set according to the system, for example, 100ms to 10S, or an arbitrary time more than 10S), the dormancy detection circuit controls the battery protection circuit 100 to enter a shipping mode, and the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected.

There are several ways to change the voltage signal received by the system ground pin (VM) of the battery protection circuit 100 for implementing the smoke rod and to change the status signal of the internal detection circuit INV1 of the battery protection circuit 100 to exit the shipping mode, and the following embodiments are described separately. Of course, the manner of changing the voltage signal received by the system ground pin (VM) of the battery protection circuit 100 to change the state signal of the internal detection circuit INV1 of the battery protection circuit 100 to exit the ship is not limited to the following, and in other embodiments of the present application, a person skilled in the art may also set other conventional circuits to change the voltage signal received by the system ground pin (VM) of the battery protection circuit 100 to change the state signal of the internal detection circuit INV1 of the battery protection circuit 100 to exit the ship.

Fourth embodiment

In one embodiment of the present application for exiting shipping mode by insertion of a cartridge into a tobacco rod, see fig. 1, 3, 7 and 16. Specifically, a thimble anode and a thimble cathode of the cigarette rod are used for being electrically connected with the cigarette bullet, a system grounding pin VM is electrically connected with the thimble cathode, and a voltage division resistor Rf is connected in series between a power grounding pin GND and the thimble anode; the power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for voltage stabilization and filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100. As shown in fig. 2, the positive electrode of the thimble is further electrically connected to a first end of the first external switch unit M1, a second end of the first external switch unit M1 is electrically connected to the power supply pin VDD behind the second external resistor Rn2, a control end of the first external switch unit M1 is electrically connected to the third input/output pin I/O-3 of the system circuit 200, the system circuit 200 controls the first external switch unit M1 to be turned on and off through the third input/output pin, and the first external switch unit M1 is a MOS transistor, such as an NMOS transistor or a PMOS transistor.

As shown in fig. 3, the battery protection circuit 100 internally includes a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected to a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected to the first internal resistance Rn1 and then to the power supply pin VDD, the system ground pin VM is also electrically connected to the internal detection circuit INV1 and a first end of the second switch unit K2, and a second end of the second switch unit K2 is electrically connected to the power ground pin GND of the battery protection circuit 100; the internal circuit detection circuit may adopt a not gate, a schmitt trigger, or any form of detection circuit, but the application is not limited thereto, and a person skilled in the art may design the circuit according to specific requirements, and the internal detection circuit of this embodiment adopts a not gate as an example.

When the smoke rod is in the shipping mode, the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected, that is, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage V1, the internal detection circuit INV1 detects the voltage change of the system ground pin VM and outputs the first state signal S1, for example, the internal detection circuit INV1 outputs the first state signal S1 as 0, that is, the nor outputs the first state signal as a logic low level signal.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd and the divider resistance Rf are connected in series between the system ground pin VM and the power supply ground pin GND to form a loop, and the voltage at the power supply pin VDD is the battery voltage V1, so that the detected voltage Vc at the system ground pin VM is V1 (Rf + Rd)/(Rf + Rd + Rn1), generally, the resistance value of the smoke cartridge internal resistance Rd is very small and is obviously smaller than that of the first internal resistance Rn1, and the resistance values of the first internal resistance Rn1 and the divider resistance Rf can be set, for example, the resistance values of the two are close to each other, or the divider resistance Rf is smaller than the first internal resistance Rn, so that the detected input voltage is obviously smaller than the battery voltage V1, including a voltage value smaller than V1/2 or smaller. When the internal detection circuit INV1 detects that the voltage of the system ground pin VM is lower than the preset threshold of the internal detection circuit INV1, for example, the preset threshold is smaller than V1/2, the internal detection circuit INV1 is triggered to flip state and output the second state signal S2, the preset threshold is the threshold at which the state signal of the internal detection circuit INV1 changes, for example, the internal detection circuit INV1 outputs the second state signal S2 as 1, that is, the nor outputs the second state signal as a logic high level signal, the battery protection circuit 100 receives the output state of the internal detection circuit INV1, and the output state is flipped from the first state 0 to the second state signal 1, and the smoke rod is controlled to exit the shipping mode.

In this embodiment, a part of the circuit integrated in the battery protection circuit 100 may be external, referring to fig. 7, the second input/output pin I/O-2 is electrically connected to the first end of the second resistor R2, the second end of the second resistor R2 is electrically connected to the first end of the second capacitor C2, and is also electrically connected to the control end of the second external switch unit M2, the second end of the second capacitor C2 is connected to the system ground pin VM, the first end of the second external switch unit M2 is electrically connected to the first end of the third resistor R3, the second end of the second external switch unit M2 is electrically connected to the system ground pin VM, the second end of the third resistor R3 is connected to the first resistor R1, and is also connected to the power supply pin VDD and the first capacitor C1; the positive pole and the negative pole of the thimble of the cigarette rod are used for electrically connecting with the cigarette bullet, the grounding pin VM of the system is electrically connected with the negative pole of the thimble, and a voltage dividing resistor Rf is connected in series between the grounding pin GND of the power supply and the positive pole of the thimble;

when the cigarette rod is in the shipping mode, the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected, that is, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage, the internal detection circuit INV1 detects that the voltage of the system ground pin VM is changed into the battery voltage and outputs the first state signal S1, for example, the internal detection circuit INV1 outputs the first state signal S1 to be 0; the internal circuit detection circuit may adopt an inverter, a schmitt trigger or any form of detection circuit, but the application is not limited thereto, and a person skilled in the art can design the circuit according to specific requirements.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd and the divider resistance Rf are connected in series between the system grounding pin VM and the power supply grounding pin GND to form a loop, the voltage at the power supply pin VDD of the power supply is the battery voltage V1, therefore, the detection voltage Vc ═ V1 ═ Rf + Rd)/(Rf + Rd + Rn1 is present at the system ground pin VM, when the internal detection circuit INV1 detects that the voltage of the system ground pin VM is lower than the preset threshold of the internal detection circuit INV1, the internal detection circuit INV1 is triggered to flip state and output a second state signal S2, the preset threshold is a threshold at which the status signal of the internal detection circuit INV1 changes, for example, the internal detection circuit INV1 outputs the second status signal S2 as 1, and the battery protection circuit 100 receives the output status of the internal detection circuit INV1 and inverts from the first status signal 0 to the second status signal 1, so as to control the tobacco rod to exit the shipping mode.

Fifth embodiment

Referring to fig. 5, 3 and 8, in another embodiment of the shipping mode exiting from the cigarette rod inserted by the cartridge, when the cartridge is inserted into the cigarette rod, the internal detection circuit INV1 of the battery protection circuit 100 detects that the voltage of the system ground pin VM changes and outputs the second status signal S2, and the battery protection circuit 100 controls the cigarette rod to exit the shipping mode according to the second status signal S2. Specifically, a thimble anode and a thimble cathode of the cigarette rod are used for being electrically connected with the cigarette cartridge, a system grounding pin VM is electrically connected with the thimble cathode, and a switch tube is connected between a power grounding pin GND and the thimble anode in series; the switch tube is an MOS tube, for example, a first NMOS tube N1, the drain of the first NMOS tube N1 is electrically connected with the positive electrode of the thimble, the source of the first NMOS tube N1 is electrically connected with a power supply grounding pin GND, and the grid of the first NMOS tube N1 is electrically connected with a system grounding pin VM; the power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected with the battery 300, a first resistor R1 and a first capacitor C1 are further arranged between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are arranged for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100. The battery protection circuit 100 internally comprises a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected to a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected to a first internal resistor Rn1 and then to a power supply pin VDD, the system ground pin VM is also electrically connected to an input end of the internal detection circuit INV1 and a first end of the second switch unit K2, and a second end of the second switch unit K2 is electrically connected to a power ground pin GND of the battery protection circuit 100;

when the smoke rod is in the shipping mode, the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected, that is, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage V1, the internal detection circuit INV1 detects the voltage change of the system ground pin VM and outputs the first state signal S1, for example, the internal detection circuit INV1 outputs the first state signal S1 as 0, that is, the nor outputs the first state signal as a logic low level signal. The internal circuit detection circuit may adopt an inverter, a schmitt trigger or any form of detection circuit, but the application is not limited thereto, and a person skilled in the art can design the circuit according to specific requirements.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd is connected between the drain electrode and the gate electrode of the first NMOS tube N1, a loop is formed between the system ground pin VM and the power supply ground pin GND, discharge is performed through the smoke cartridge internal resistance Rd and the first NMOS tube N1, the voltage Vc of the system ground pin VM is reduced along with the discharge of the first NMOS tube N1, when the internal detection circuit INV1 detects that the voltage of the system ground pin VM is lower than the cut-off threshold voltage of the NMOS tube, the voltage is the detection threshold of the internal detection circuit INV1, so that the state inversion of the internal detection circuit INV1 is triggered to output the second state signal S2, for example, the internal detection circuit INV1 outputs the second state signal S2 as 1, that is, namely, the nor outputs the second state signal as a logic high level signal. The battery protection circuit 100 receives a high signal that the output state of the internal detection circuit INV1 is inverted from a low signal of the first state signal to a second state signal, and controls the tobacco rod to exit the shipping mode.

In this embodiment, referring to fig. 10, a switch tube connected in series between the power ground pin GND and the thimble anode may be integrated inside the battery protection circuit 100, the switch tube is a MOS tube, for example, a first NMOS tube N1, inside the battery protection circuit 100, a first NMOS tube N1 is electrically connected between the power ground pin GND and the detection pin AT, a drain of the first NMOS tube N1 is electrically connected to the detection pin AT, a source is electrically connected to the power ground pin GND, and a gate is electrically connected to the system ground pin VM through a fourth resistor;

when the smoke rod is in the shipping mode, the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected, that is, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage V1, the internal detection circuit INV1 detects the voltage of the system ground pin VM and outputs the first state signal S1, for example, the internal detection circuit INV1 outputs the first state signal S1 as 0, that is, the nor outputs the first state signal as a logic low level signal.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd is connected between the detection pin AT and the system grounding pin VM, a loop is formed between the system grounding pin VM and the power supply grounding pin GND, discharging is carried out through the smoke cartridge internal resistance Rd and the first NMOS tube N1, the voltage of the system grounding pin VM is reduced along with the discharging of the first NMOS tube N1, when the internal detection circuit INV1 detects that the voltage of the system grounding pin VM is lower than the threshold voltage of the cut-off of the NMOS tube, the voltage is the detection threshold value of the internal detection circuit INV1, so that the state inversion of the internal detection circuit INV1 is triggered to output a second state signal S2, for example, the internal detection circuit INV1 outputs the second state signal S2 to be 1, namely, the NOT gate outputs the second state signal to be a logic high level signal. The battery protection circuit 100 receives a low level signal that the output state of the internal detection circuit INV1 is inverted from the first state signal to the second state signal, and controls the tobacco rod to exit the shipping mode.

In this embodiment, a part of the circuit integrated in the battery protection circuit 100 may be external, referring to fig. 8, the tobacco rod further includes a system circuit 200, the battery protection circuit 100, and the battery protection circuit 100 includes a power supply pin VDD electrically connected to the positive electrode of the battery 300, a power ground pin GND electrically connected to the negative electrode of the battery 300, and a system ground pin VM electrically connected to the negative electrode of the thimble of the tobacco rod. The system circuit 200 comprises a first power supply pin P electrically connected with the anode of the battery 300, a first grounding pin G electrically connected with the system grounding pin VM, a first input/output pin I/O-1 electrically connected with the anode of the thimble, and a second input/output pin I/O-2 electrically connected with the first end of the second resistor R2; a second end of the second resistor R2 is electrically connected to a first end of the second capacitor C2, and is also electrically connected to a control end of the second external switch unit M2, a second end of the second capacitor C2 is connected to the system ground pin VM, a first end of the second external switch unit M2 is electrically connected to a first end of the third resistor R3, a second end of the second external switch unit M2 is electrically connected to the system ground pin VM, a second end of the third resistor R3 is connected to the first resistor R1, and is also connected to the power supply pin VDD and the first capacitor C1; the positive pole and the negative pole of the thimble of the cigarette rod are used for being electrically connected with the cigarette bullet, the system grounding pin VM is electrically connected with the negative pole of the thimble, and a switch tube is connected between the power grounding pin GND and the positive pole of the thimble in series; the switch tube is an MOS tube, for example, a first NMOS tube N1, the drain of the first NMOS tube N1 is electrically connected with the positive electrode of the thimble, the source of the first NMOS tube N1 is electrically connected with a power supply grounding pin GND, and the grid of the first NMOS tube N1 is electrically connected with a system grounding pin VM; the power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100. The battery protection circuit 100 internally comprises a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected to a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected to a first internal resistor Rn1 and then to a power supply pin VDD, the system ground pin VM is also electrically connected to a first end of the internal detection circuit INV1 and a second switch unit K2, and a second end of the second switch unit K2 is electrically connected to a power ground pin GND of the battery protection circuit 100;

when the smoke rod is in the shipping mode, the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected, that is, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage V1, the internal detection circuit INV1 detects that the voltage of the system ground pin VM is changed into the battery voltage V1 and outputs the first state signal S1, for example, the internal detection circuit INV1 outputs the first state signal S1 as 0, that is, the nor gate outputs the first state signal as a logic low level signal; the internal circuit detection circuit may adopt an inverter, a schmitt trigger or any form of detection circuit, but the application is not limited thereto, and a person skilled in the art can design the circuit according to specific requirements.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd is connected between the drain electrode and the gate electrode of the first NMOS tube N1, a loop is formed between the system ground pin VM and the power supply ground pin GND, discharge is performed through the smoke cartridge internal resistance Rd and the first NMOS tube N1, the voltage Vc of the system ground pin VM is reduced along with the discharge of the first NMOS tube N1, when the internal detection circuit INV1 detects that the voltage of the system ground pin VM is lower than the cut-off threshold voltage of the NMOS tube, the voltage is the detection threshold of the internal detection circuit INV1, so that the state inversion of the internal detection circuit INV1 is triggered to output the second state signal S2, for example, the internal detection circuit INV1 outputs the second state signal S2 as 1, that is, namely, the nor outputs the second state signal as a logic high level signal. The battery protection circuit 100 receives the signal that the output state of the internal detection circuit INV1 is inverted from the first state low level signal to the second state high level signal, and controls the tobacco rod to exit the shipping mode.

In this embodiment, a switch tube connected in series between the power ground pin GND and the thimble anode may be integrated into the battery protection circuit 100, where the switch tube is an MOS tube, for example, a first NMOS tube N1, and details thereof are not repeated herein.

Sixth embodiment

Referring to fig. 6, 3 and 9, in another embodiment of the shipping mode exiting from the cigarette rod inserted by the cartridge, when the cartridge is inserted into the cigarette rod, the internal detection circuit INV1 of the battery protection circuit 100 outputs the second status signal S2 when the voltage of the system ground pin VM is detected to be lower than the detection threshold voltage of the internal detection circuit INV1, and the battery protection circuit 100 controls the cigarette rod to exit the shipping mode according to the second status signal S2. Specifically, a thimble anode and a thimble cathode of the cigarette rod are used for being electrically connected with the cigarette cartridge, a system grounding pin VM is electrically connected with the thimble cathode, and a switch tube is connected between a power grounding pin GND and the thimble anode in series; the switch tube comprises two MOS tubes connected in series, such as a first NMOS tube N1 and a second NMOS tube N2, the source electrode of the first NMOS tube N1 is electrically connected with the source electrode of the second NMOS tube N2, the drain electrode of the first NMOS tube N1 is electrically connected with the positive electrode of the thimble, the drain electrode of the second NMOS tube N2 is electrically connected with a power supply grounding pin GND, and the common electrical connection position of the grid electrode of the first NMOS tube N1 and the grid electrode of the second NMOS tube N2 is electrically connected with a system grounding pin VM; the power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100. The battery protection circuit 100 internally comprises a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected to a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected to a first internal resistor Rn1 and then to a power supply pin VDD, the system ground pin VM is also electrically connected to an input end of the internal detection circuit INV1 and a first end of the second switch unit K2, and a second end of the second switch unit K2 is electrically connected to a power ground pin GND of the battery protection circuit 100;

when the smoke rod is in the shipping mode, the second switch unit K2 between the system ground pin VM and the power ground pin GND is disconnected, that is, the system ground pin VM and the power ground pin GND are disconnected, so that the first internal resistance Rn1 pulls up the voltage of the system ground pin VM to be close to the battery voltage V1, the internal detection circuit INV1 detects the voltage change of the system ground pin VM and outputs the first state signal S1, for example, the internal detection circuit INV1 outputs the first state signal S1 as 0, that is, the nor outputs the first state signal as a logic low level signal; the internal circuit detection circuit may adopt an inverter, a schmitt trigger or any form of detection circuit, but the application is not limited thereto, and a person skilled in the art can design the circuit according to specific requirements.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd is connected between the drain electrode and the gate electrode of the first NMOS tube N1, a loop is formed between the system ground pin VM and the power supply ground pin GND, discharge is performed through the smoke cartridge internal resistance Rd, the first NMOS tube N1 and the second NMOS tube N2, the voltage of the system ground pin VM is reduced along with the discharge of the first NMOS tube N1 and the second NMOS tube N2, when the internal detection circuit INV1 detects that the voltage of the system ground pin VM is lower than the threshold voltage of the cut-off of the NMOS tube, the voltage is the detection threshold of the internal detection circuit INV1, so that the internal detection circuit INV1 is triggered to flip and output the second state signal S2, for example, the internal detection circuit INV1 outputs the second state signal S2 as 1, that the nor outputs the second state signal as a logic high level signal. The battery protection circuit 100 receives the output state of the internal detection circuit INV1, and inverts from the first state signal low level signal to the second state signal high level signal, so as to control the tobacco rod to exit the shipping mode.

In this embodiment, referring to fig. 11, two switching tubes connected in series between the power ground pin GND and the thimble positive electrode may be integrated into the battery protection circuit 100, wherein the source of the first NMOS tube N1 is electrically connected to the source of the second NMOS tube N2, the drain of the first NMOS tube N1 is electrically connected to the detection pin AT, the drain of the second NMOS tube N2 is electrically connected to the power ground pin GND, and the common electrical connection between the gate of the first NMOS tube N1 and the gate of the second NMOS tube N2 is electrically connected to the system ground pin VM through a fourth resistor R4.

When the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance Rd is connected between the detection pin and the system grounding pin, a loop is formed between the system grounding pin VM and the power supply grounding pin GND, discharging is carried out through the smoke cartridge internal resistance Rd, the first NMOS tube N1 and the second NMOS tube N2, the voltage of the system grounding pin VM is reduced along with the discharging of the first NMOS tube N1 and the second NMOS tube N2, when the internal detection circuit INV1 detects that the voltage of the system grounding pin VM is lower than the threshold voltage of the cut-off of the NMOS tube, the voltage is the detection threshold value of the internal detection circuit INV1, so that the state inversion of the internal detection circuit INV1 is triggered to output a second state signal S2, for example, the internal detection circuit INV1 outputs the second state signal S2 to be 1, namely, the NOT gate outputs the second state signal to be a logic high level signal. The battery protection circuit 100 receives the signal that the output state of the internal detection circuit INV1 is inverted from the first state low level signal to the second state high level signal, and controls the tobacco rod to exit the shipping mode.

In this embodiment, a part of the circuit integrated in the battery protection circuit 100 may also be external, referring to fig. 9, the tobacco rod further includes a system circuit 200 and the battery protection circuit 100, the battery protection circuit 100 includes a power supply pin VDD electrically connected to the positive electrode of the battery 300, a power ground pin GND electrically connected to the negative electrode of the battery 300, and a system ground pin VM electrically connected to the negative electrode of the thimble of the tobacco rod. The system circuit 200 comprises a first power supply pin P electrically connected with the anode of the battery 300, a first grounding pin G electrically connected with the system grounding pin VM, a first input/output pin I/O-1 electrically connected with the anode of the thimble, and a second input/output pin I/O-2 electrically connected with the first end of the second resistor R2; a second end of the second resistor R2 is electrically connected to a first end of the second capacitor C2, and is also electrically connected to a control end of the second external switch unit M2, a second end of the second capacitor C2 is connected to the system ground pin VM, a first end of the second external switch unit M2 is electrically connected to a first end of the third resistor R3, a second end of the second external switch unit M2 is electrically connected to the system ground pin VM, a second end of the third resistor R3 is connected to the first resistor R1, and is also connected to the power supply pin VDD and the first capacitor C1; the positive pole and the negative pole of the thimble of the cigarette rod are used for electrically connecting with the cigarette cartridge, a system grounding pin VM is electrically connected with the negative pole of the thimble, two communicating poles of a switch tube are connected in series between a power grounding pin GND and the positive pole of the thimble, the switch tube comprises two MOS tubes connected in series, such as a first NMOS tube N1 and a second NMOS tube N2, the source electrode of the first NMOS tube N1 is electrically connected with the source electrode of the second NMOS tube N2, the drain electrode of the first NMOS tube N1 is electrically connected with the positive pole of the thimble, the drain electrode of the second NMOS tube N2 is electrically connected with the power grounding pin GND, and the common electric connection part of the grid electrode of the first NMOS tube N1 and the grid electrode of the second NMOS tube N2 is electrically connected with the system grounding pin VM; the power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100. The battery protection circuit 100 internally comprises a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected with a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected with a first internal resistor Rn1 and then connected with a power supply pin VDD, the system ground pin VM is also electrically connected with an internal detection circuit INV1 and a first end of the second switch unit K2, and a second end of the second switch unit K2 is electrically connected with a power supply ground pin GND of the battery protection circuit 100;

In this embodiment, two switching tubes connected in series between the power ground pin GND and the thimble anode may be integrated into the battery protection circuit 100, where the switching tubes are MOS tubes, such as the first NMOS tube N1 and the second NMOS tube N2, and are not described herein again.

Seventh embodiment

In another embodiment of the present application, referring to fig. 14, when the charger is plugged into the cigarette rod for charging, the internal detection circuit INV1 of the battery protection circuit 100 detects that the voltage of the system ground pin VM changes and outputs the second status signal S2, and the battery protection circuit 100 controls the cigarette rod to exit the shipping mode according to the second status signal S2. Specifically, the cigarette rod comprises a thimble anode and a thimble cathode and is used for being electrically connected with the cigarette bullet; the tobacco rod further comprises a system circuit 200, wherein the system circuit 200 comprises a first power supply pin P electrically connected with the positive electrode of the battery 300, a first grounding pin G electrically connected with a system grounding pin VM, a first input/output pin I/O-1 electrically connected with the positive electrode of the thimble, and a second input/output pin I/O-2 electrically connected with a shipping control pin CTL of the battery protection circuit 100; the system grounding pin VM is electrically connected with the negative pole of the thimble, a divider resistor Rf or a switch tube is connected between the power grounding pin GND and the positive pole of the thimble in series, and the positive pole and the negative pole of the charging power port are electrically connected with the first power pin P and the system grounding pin; the power supply pin VDD and the power ground pin GND of the battery protection circuit 100 are respectively electrically connected to the battery 300, a first resistor R1 and a first capacitor C1 are further disposed between the battery 300 and the battery protection circuit 100, and the first resistor R1 and the first capacitor C1 are disposed for filtering. In addition, no capacitor may be provided between the battery 300 and the battery protection circuit 100, or other circuits or electronic components may be provided between the battery 300 and the battery protection circuit 100. The battery protection circuit 100 internally comprises a first switch unit K1, an internal detection circuit INV1 and a second switch unit K2, a system ground pin VM of the battery protection circuit 100 is electrically connected to a first end of the first switch unit K1, a second end of the first switch unit K1 is electrically connected to a first internal resistor Rn1 and then to a power supply pin VDD, the system ground pin VM is also electrically connected to a first end of the internal detection circuit INV1 and a second switch unit K2, and a second end of the second switch unit K2 is electrically connected to a power ground pin GND of the battery protection circuit 100; the tobacco rod also includes a charge management IC for sensing the battery 300 voltage to ensure that the battery 300 is fully charged to a saturated voltage, which may be set according to the battery 300 properties, such as 4.2V.

When a charger is inserted into a charging power port for charging, the charging management IC400 outputs current to charge the battery 300, and the charging voltage is not higher than the full charging voltage by 4.2V, according to kirchhoff' S law, the voltage Vc of the system ground pin VM is the full charging voltage — the battery voltage V1, which is less than or equal to zero, when the internal detection circuit INV1 detects that the voltage of the system ground pin VM is lower than the preset threshold of the internal detection circuit INV1, the internal detection circuit INV1 is triggered to flip state and output the second state signal S2, which is the threshold at which the state signal of the internal detection circuit INV1 changes, for example, the internal detection circuit INV1 outputs the second state signal S2 as 1, that is, the nor gate outputs the second state signal as a logic high level signal. The battery protection circuit 100 receives the signal that the output state of the internal detection circuit INV1 is inverted from the first state low level signal to the second state high level signal, and controls the tobacco rod to exit the shipping mode.

It should be understood that reference to "a plurality" herein means two or more. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims

1. A tobacco rod comprises a battery and a battery protection circuit, and is characterized in that the battery protection circuit comprises a power supply pin electrically connected with the positive electrode of the battery, a power grounding pin electrically connected with the negative electrode of the battery, and a system grounding pin;

the cigarette rod comprises a thimble anode and a thimble cathode which are used for being electrically connected with the cigarette cartridge, the system grounding pin is electrically connected with the thimble cathode, two NMOS tubes are connected between the power grounding pin and the thimble anode in series, wherein the source electrode of a first NMOS tube is electrically connected with the source electrode of a second NMOS tube, the communicating electrode electrically connected with the thimble anode corresponds to the drain electrode of the first NMOS tube, the communicating electrode electrically connected with the power grounding pin corresponds to the drain electrode of the second NMOS tube, and the control electrode electrically connected with the system grounding pin corresponds to the common electrical connection part of the grid electrode of the first NMOS tube and the grid electrode of the second NMOS tube;

when the tobacco rod is in a shipping mode, the system grounding pin and the power grounding pin are disconnected; the smoke cartridge is connected with the smoke rod, and the battery protection circuit detects the voltage change of the system grounding pin and controls the smoke rod to exit the shipping mode.

2. The tobacco rod of claim 1, wherein the cartridge is connected to the tobacco rod, the internal detection circuit of the battery protection circuit detects that the voltage of the system ground pin is lower than a preset threshold value and outputs a second status signal, and the battery protection circuit controls the tobacco rod to exit the shipping mode according to the second status signal.

3. The tobacco rod of claim 1 or 2, wherein the battery protection circuit internally comprises one end of a first switch electrically connected with a system ground pin, the other end of the first switch is electrically connected with a first internal resistor and then connected with the power supply pin, and the system ground pin is also electrically connected with an internal detection circuit;

when the cigarette rod is in a shipping mode, the second switch unit between the system grounding pin and the power supply grounding pin is disconnected, the first switch is turned on, and the internal detection circuit detects that the voltage of the system grounding pin is equal to the voltage of a battery connected to the power supply pin and outputs a first state signal;

the smoke cartridge is connected with the smoke rod, the smoke cartridge internal resistance is connected between the drain electrode and the grid electrode of the first NMOS tube, so that discharge is carried out between the system grounding pin and the power supply grounding pin through the smoke cartridge internal resistance, the first NMOS tube and the second NMOS tube, the voltage of the system grounding pin is reduced along with the discharge of the first NMOS tube and the second NMOS tube, and the internal detection circuit detects that the voltage of the system grounding pin is lower than a threshold value and outputs a second state signal; and the battery protection circuit controls the tobacco rod to exit the shipping mode according to the second state signal.

4. A smoke rod according to claim 3, wherein said internal detection circuit is a not gate, and wherein in said smoke rod in said shipping mode, said system ground pin voltage is approximately equal to the battery voltage, and said not gate outputs a first state signal that is a logic low signal; the smoke cartridge is connected with the smoke rod, the detection voltage of the system grounding pin is smaller than the voltage of the battery, and the second state signal corresponding to the NOT gate is a logic high level signal.

5. The tobacco rod of claim 1, further comprising a system circuit comprising a first power pin electrically connected to the battery positive electrode, a first ground pin electrically connected to a system ground pin, and further comprising a first input output pin electrically connected to the ejector pin positive electrode, a second input output pin electrically connected to a ship control pin of the battery protection circuit.

6. The tobacco rod of claim 5, wherein the cartridge is disengaged from the tobacco rod, and the system circuit detects a voltage change at the first input/output pin and inputs a shipping entry signal to the battery protection circuit via the second input/output pin, and the battery protection circuit controls the tobacco rod to enter a shipping mode.

7. The tobacco rod according to claim 1, characterized in that the tobacco rod further comprises a system circuit, the positive pole of the thimble is further electrically connected to the first end of the first external switch unit, the second end of the first external switch unit is electrically connected to the positive pole of the battery after the second external resistor, the control end of the first external switch unit is electrically connected to the third input/output pin of the system circuit, and the system circuit controls the first external switch unit to be turned on and off through the third input/output pin;

when the cigarette cartridge is connected with the cigarette rod, the cigarette cartridge internal resistance is connected between the positive pole of the thimble and the negative pole of the thimble, the system circuit controls the conduction of the first external switch unit, and the system circuit detects that the input voltage of the first input/output pin terminal is low voltage; when the cigarette cartridge is separated from the cigarette rod, the system circuit detects that the input voltage of the first input/output pin is approximately equal to the battery voltage, the system circuit detects that the cigarette cartridge is pulled out of the cigarette rod according to the change of the input voltage of the first input/output pin end, a shipping signal is input into the battery protection circuit through the second input/output pin, and the battery protection circuit controls the cigarette rod to enter a shipping mode after receiving the shipping signal sent by the system circuit.

8. A tobacco rod according to claim 1 further comprising system circuitry, the system circuit comprises a first power supply pin electrically connected with the anode of the battery, a first grounding pin electrically connected with a system grounding pin, and also comprises a first input/output pin electrically connected with the positive electrode of the thimble, a second input/output pin electrically connected with one end of a second resistor, the other end of the second resistor is electrically connected with a second capacitor, meanwhile, the control end of the second external switch unit is electrically connected, the other end of the second capacitor is connected with the system grounding pin, one connecting end of the second external switch unit is electrically connected with the third resistor, the other end of the second external switch unit is connected with the system grounding pin, the other end of the third resistor is connected with the first resistor, meanwhile, the power supply pin and the first capacitor are connected, the other end of the first resistor is connected with the anode of the battery, and the other end of the first capacitor is connected with the cathode of the battery and the power grounding pin.

9. The cigarette rod of claim 8, wherein the cartridge is disengaged from the cigarette rod, the system circuit detects a voltage change at the first input/output pin and outputs a pulse signal at the second input/output pin, the second external switch unit is controlled to be turned on during the high level duration of the pulse, and the voltage at the power supply pin is changed from a battery voltage to: V1R 3/(R3+ R1), wherein, battery voltage V1, first resistance R1, third resistance R3, the battery protection circuit control the tobacco rod enters shipping mode.

10. An electronic cigarette, comprising the tobacco rod according to any one of claims 1 to 9.