Electronic cigarette charging box cigarette rod identification circuit and electronic cigarette charging device

Abstract

The electronic cigarette charging box cigarette rod recognition circuit comprises a main control module and an induction switch module. The main control module comprises a first filter capacitor and a main control chip. One end of the first filter capacitor is connected to a power input end of the main control chip and an external power supply, and the other end is grounded. The induction switch module is composed of a magnetic induction switch and a first current limiting resistor. One end of the first current limiting resistor is connected to the external power supply, and the other end is connected to a power input end of the magnetic induction switch. A signal output end of the magnetic induction switch is connected to an enable control end of the main control chip. The circuit uses a magnetic induction switch to recognize the insertion state of the cigarette rod by sensing the magnetic field change of the bottom magnet of the electronic cigarette. The magnetic field signal is stable and not easily affected by external interference, improving the recognition accuracy and reducing misjudgment. At the same time, the state of the cigarette rod can be accurately judged, and the main control chip can turn off the charging function in time when the cigarette rod is removed from the cartridge, thereby reducing power consumption and prolonging the use time of the charging box.

Description

Technical Field

[0001] This disclosure relates to the technical field of electronic cigarette charging devices, and in particular to an electronic cigarette charging box and e-cigarette rod identification circuit and electronic cigarette charging device. Background Technology

[0002] In the field of e-cigarette technology, the combined use of a charging case and the e-cigarette device provides users with a convenient charging experience. Accurately identifying whether the e-cigarette device is inserted into the charging case is crucial for the proper functioning of the charging process. Traditional charging case e-cigarette device identification circuits primarily rely on a voltage pull-down mechanism. The working principle is that when the e-cigarette device is inserted into the charging case, it causes a voltage drop at a specific node in the circuit. The system determines whether the e-cigarette device is inserted by detecting this voltage change.

[0003] However, voltage fluctuations can be affected by various factors, such as noise in the circuit, poor contact, and electromagnetic interference in the external environment. This can easily lead to insufficient stability in identifying the insertion status of the e-cigarette device based on voltage pull-down, and may result in misjudgments: first, the e-cigarette device may actually be inserted into the charging box, but the system fails to accurately identify it and does not activate the corresponding charging function; second, the e-cigarette device may have left the charging box, but the system still considers it to be in the box and continues to perform charging operations. This not only wastes energy but also causes unnecessary wear and tear on circuit components, thereby shortening the lifespan of the charging box and the e-cigarette device. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an electronic cigarette charging box and electronic cigarette charging device that improves the accuracy of cigarette rod recognition and reduces the power consumption of the electronic cigarette charging box.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] An electronic cigarette charging case rod identification circuit includes a main control module and a sensor switch module. The main control module includes a first filter capacitor and a main control chip. The first end of the first filter capacitor is connected to the power input terminal and the external power supply terminal of the main control chip, and the second end of the first filter capacitor is grounded. The sensor switch module includes a magnetic induction switch and a first current-limiting resistor. The first end of the first current-limiting resistor is connected to the external power supply terminal, and the second end of the first current-limiting resistor is connected to the power input terminal of the magnetic induction switch. The signal output terminal of the magnetic induction switch is connected to the enable control terminal of the main control chip.

[0007] In one embodiment, the inductive switch module further includes a first voltage divider resistor, the first end of which is connected to the signal output terminal of the magnetic induction switch, and the second end of which is connected to the enable control terminal of the main control chip.

[0008] In one embodiment, the inductive switch module further includes a second voltage divider resistor, the first end of which is connected to the enable control terminal of the main control chip and the second end of the first voltage divider resistor, and the second end of the second voltage divider resistor is grounded.

[0009] In one embodiment, the main control module further includes a boost inductor and a second current-limiting resistor. The first end of the second current-limiting resistor is connected to the battery power supply terminal, the second end of the second current-limiting resistor is connected to the first end of the boost inductor, and the second end of the boost inductor is connected to the voltage switch control terminal of the main control chip.

[0010] In one embodiment, the main control module further includes a second filter capacitor, the first end of which is connected to the first end of the second current-limiting resistor, and the second end of the second filter capacitor is grounded.

[0011] In one embodiment, the main control module further includes a third filter capacitor, the first end of which is connected to the output terminal of the main control chip, the first end of which is also used to connect to the charging terminal of the cigarette rod, and the second end of which is grounded.

[0012] In one embodiment, the electronic cigarette charging case and e-cigarette rod identification circuit further includes a battery management module. The battery management module includes a Zener diode and a power management chip. The negative terminal of the Zener diode is connected to the battery power supply terminal, and the positive terminal of the Zener diode is grounded. The power input terminal of the power management chip is connected to the negative terminal of the Zener diode, and the status signal terminal of the power management chip is connected to the battery status signal terminal of the main control chip.

[0013] In one embodiment, the battery management module further includes a third current-limiting resistor, the first end of which is connected to the status signal terminal of the power management chip, and the second end of which is connected to the battery status signal terminal of the main control chip.

[0014] In one embodiment, the magnetic induction switch is model MR1362S.

[0015] This application also provides an electronic cigarette charging device, including the electronic cigarette charging box and cigarette rod identification circuit described in any of the above embodiments.

[0016] Compared with the prior art, this disclosure has at least the following advantages:

[0017] The aforementioned e-cigarette charging case device recognition circuit employs a magnetic induction switch, which identifies the device's insertion status by sensing changes in the magnetic field of the magnet at the bottom of the e-cigarette. Because the magnetic field signal is relatively stable and less susceptible to external interference, it improves the accuracy of device identification when the device is in and out of the charging case, reducing false alarms. Furthermore, since the e-cigarette charging case device recognition circuit can accurately determine the insertion and removal status of the device, the main control chip can promptly shut off the charging function when the device is removed from the charging case, avoiding unnecessary charging operations, thereby reducing energy waste, lowering the charging case's power consumption, and ultimately extending the charging case's usage time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A circuit diagram of an electronic cigarette charging case and e-cigarette rod recognition circuit according to one embodiment;

[0020] Figure 2 for Figure 1 The diagram shows a partial circuit diagram of the electronic cigarette charging case's cigarette holder recognition circuit. Detailed Implementation

[0021] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the electronic cigarette charging box and e-cigarette rod identification circuit 10 of this disclosure includes a main control module 100 and an induction switch module 200. The main control module 100 includes a first filter capacitor C10 and a main control chip U1. The first end of the first filter capacitor C10 is connected to the power input terminal and the external power supply terminal of the main control chip U1, respectively, and the second end of the first filter capacitor C10 is grounded. The induction switch module 200 includes a magnetic induction switch U3 and a first current limiting resistor R5. The first end of the first current limiting resistor R5 is used to connect to the external power supply terminal, and the second end of the first current limiting resistor R5 is connected to the power input terminal of the magnetic induction switch U3. The signal output terminal OUTPUT of the magnetic induction switch U3 is connected to the enable control terminal EN_P of the main control chip U1.

[0026] In this embodiment, when the e-cigarette device is not inserted into the charging case, the magnet at the bottom of the e-cigarette is not close to the magnetic switch U3, and the magnetic switch U3 is in its initial state, outputting a high-level signal at its signal output terminal. This high-level signal is transmitted to the enable control terminal EN_P of the main control chip U1. After the main control chip U1 detects that the enable control terminal EN_P is a high-level signal, it determines that the e-cigarette device is in the off-chamber state. At this time, the main control chip U1 will not activate the boost charging function, and the charging case is in standby mode. The first filter capacitor C10 in the main control module 100 continuously filters the power input from the external power supply terminal, providing a stable power foundation for subsequent possible operations.

[0027] Furthermore, when the e-cigarette is inserted into the charging case, the magnet at the bottom of the e-cigarette approaches the magnetic switch U3. The magnetic switch U3 senses the change in magnetic field, causing a state transition in its internal circuitry, and its signal output terminal outputs a low-level signal. This low-level signal is transmitted to the enable control terminal EN_P of the main control chip U1. Upon detecting that the enable control terminal EN_P is low, the main control chip U1 determines that the e-cigarette is in the charging case and immediately activates the boost charging function. It boosts the voltage input from the external power supply terminal to meet the voltage requirements for charging the e-cigarette, providing a stable charging current and beginning the charging process.

[0028] Specifically, during the charging process, if the e-cigarette is pulled out of the charging box again, the magnetic switch U3 will sense the change in magnetic field again, and its signal output terminal will output a high-level signal again. This signal is transmitted to the enable control terminal EN_P of the main control chip U1. After the main control chip U1 detects that the enable control terminal EN_P has become high, it determines that the e-cigarette has left the charging box, immediately shuts down the boost function, and stops charging the e-cigarette, thus avoiding energy waste and safety hazards that may result from continuing to boost the voltage when the e-cigarette has left the charging box.

[0029] The aforementioned e-cigarette charging case e-cigarette rod identification circuit 10 employs a magnetic induction switch U3, which identifies the rod's insertion status by sensing changes in the magnetic field of the magnet at the bottom of the e-cigarette. Because the magnetic field signal is relatively stable and not easily affected by external interference, it improves the accuracy of rod identification when the rod is in and out of the charging case, reducing false alarms. Furthermore, since the e-cigarette charging case e-cigarette rod identification circuit 10 can accurately determine the rod's insertion and removal status, the main control chip U1 can promptly shut off the charging function when the rod is removed from the charging case, avoiding unnecessary charging operations, thereby reducing energy waste, lowering the charging case's power consumption, and ultimately extending the charging case's usage time.

[0030] like Figure 1 and Figure 2 As shown, in one embodiment, the inductive switch module 200 further includes a first voltage divider resistor R6. The first end of the first voltage divider resistor R6 is connected to the signal output terminal OUTPUT of the magnetic induction switch U3, and the second end of the first voltage divider resistor R6 is connected to the enable control terminal EN_P of the main control chip U1. In this embodiment, the first voltage divider resistor R6 can adjust the signal voltage output by the magnetic induction switch U3. Because the signal voltage output by the magnetic induction switch U3 may fluctuate under different electronic cigarette devices and operating environments, and the enable control terminal EN_P of the main control chip U1 has certain requirements for the input voltage, the first voltage divider resistor R6 can ensure that the voltage input to the enable control terminal EN_P of the main control chip U1 is stable within a suitable range. This avoids the main control chip U1 being unable to accurately identify the signal due to excessively high or low voltage, thereby improving the stability of signal transmission and thus improving the accuracy of identifying the cigarette device in and out of the storage compartment.

[0031] like Figure 1 and Figure 2As shown, in one embodiment, the inductive switch module 200 further includes a second voltage divider resistor R7. The first end of the second voltage divider resistor R7 is connected to the enable control terminal EN_P of the main control chip U1 and the second end of the first voltage divider resistor R6, respectively, and the second end of the second voltage divider resistor R7 is grounded. In this embodiment, the second voltage divider resistor R7 and the first voltage divider resistor R6 together form a voltage divider circuit, which can more accurately adjust the voltage input to the enable control terminal EN_P of the main control chip U1. Specifically, in practical applications, the signal voltage output by the magnetic induction switch U3 may fluctuate due to various factors. Through the voltage division effect of the first voltage divider resistor R6 and the second voltage divider resistor R7, the input voltage can be stabilized within the appropriate range required by the enable control terminal EN_P of the main control chip U1. This improves the stability of the signal voltage received by the main control chip U1, avoids signal recognition errors due to voltage abnormalities, and thus improves the accuracy of identifying the state of the cigarette holder in and out of the holder.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, the main control module 100 further includes a boost inductor L1 and a second current-limiting resistor R1. The first end of the second current-limiting resistor R1 is connected to the battery power supply terminal VBAT, and the second end of the second current-limiting resistor R1 is connected to the first end of the boost inductor L1. The second end of the boost inductor L1 is connected to the voltage switch control terminal of the main control chip U1. In this embodiment, when the voltage switch control terminal of the main control chip U1 is turned on, the current output from the battery power supply terminal VBAT flows into the boost inductor L1 through the second current-limiting resistor R1. The boost inductor L1 stores electromagnetic energy based on the principle of electromagnetic induction, and its inductance characteristics ensure that the current can rise steadily, avoiding instantaneous current surges that could impact the circuit. When the voltage switch control terminal is turned off, the boost inductor L1 quickly releases the stored energy through a freewheeling element, which, when superimposed with the input voltage of the battery power supply terminal, forms a higher output voltage, thereby effectively boosting the input voltage and providing a stable high voltage that meets the charging requirements of the e-cigarette. Simultaneously, the second current-limiting resistor R1 plays a precise current-limiting and protection role in the circuit. At the instant the voltage switch control terminal is turned on, the boost inductor L1 may generate a large inrush current due to its low initial impedance. The second current-limiting resistor R1 limits the maximum current flowing through L1 through its own resistance characteristics, so as to avoid excessive current from damaging the boost inductor L1, the voltage switch control terminal of the main control chip U1 and the battery power supply terminal, thereby improving the stability of the circuit.

[0033] like Figure 1 and Figure 2As shown, in one embodiment, the main control module 100 further includes a second filter capacitor C6. The first terminal of the second filter capacitor C6 is connected to the first terminal of the second current-limiting resistor R1, and the second terminal of the second filter capacitor C6 is grounded. In this embodiment, the voltage output from the battery power supply terminal VBAT may fluctuate due to factors such as the battery's charging and discharging state and load changes. The second filter capacitor C6 can effectively filter out high-frequency noise and fluctuation components in the voltage, making the voltage input to the boost inductor L1 and the voltage switch control terminal of the main control chip U1 more stable. A stable voltage input is crucial for the normal operation of the boost circuit. It ensures that the boost inductor L1 operates according to the expected electromagnetic induction principle during charging and discharging, thereby achieving accurate voltage boost and providing a stable high voltage to the e-cigarette rod that meets the charging requirements.

[0034] like Figure 1 and Figure 2 As shown, in one embodiment, the main control module 100 further includes a third filter capacitor C5. The first end of the third filter capacitor C5 is connected to the output terminal of the main control chip U1, and the first end of the third filter capacitor C5 is also used to connect to the charging terminal of the cigarette holder. The second end of the third filter capacitor C5 is grounded. In this embodiment, the third filter capacitor C5 is connected in parallel between the charging terminal and ground. It can quickly absorb fluctuations in the circuit through its dynamic charging and discharging characteristics. Specifically, when the output voltage is higher than the voltage across the capacitor, the third filter capacitor C5 quickly charges and stores electrical energy; when the output voltage is lower than the voltage across the capacitor, the third filter capacitor C5 immediately discharges to replenish electrical energy, controlling the voltage fluctuation amplitude of the cigarette holder charging terminal to a very small range, thereby ensuring that the voltage input to the cigarette holder is always stable at the set charging voltage value.

[0035] like Figure 1 and Figure 2As shown, in one embodiment, the electronic cigarette charging case and e-cigarette rod identification circuit 10 further includes a battery management module 300. The battery management module 300 includes a Zener diode D2 and a power management chip U4. The negative terminal of the Zener diode D2 is connected to the battery power supply terminal VBAT, and the positive terminal of the Zener diode D2 is grounded. The power input terminal of the power management chip U4 is connected to the negative terminal of the Zener diode D2, and the status signal terminal of the power management chip U4 is connected to the battery status signal terminal H of the main control chip U1. In this embodiment, the battery power supply terminal VBAT may experience a momentary high voltage due to battery abnormalities or external circuit interference. The Zener diode D2, through its voltage stabilization characteristic after reverse breakdown, can guide the momentary high voltage to the ground terminal. Specifically, when the voltage of the battery power supply terminal VBAT exceeds the rated voltage regulation value of D2, the Zener diode D2 will quickly reverse conduct, clamping the voltage of the battery power supply terminal VBAT within a safe range, preventing excessive voltage from flowing into the subsequent power management chip U4 and main control chip U1, and preventing chip damage due to overvoltage. Even if the VBAT voltage at the battery power supply terminal does not reach the breakdown threshold, the Zener diode D2 can slightly absorb high-frequency spike fluctuations in the voltage through its junction capacitance characteristics during reverse cutoff, helping to stabilize the output voltage of the VBAT at the battery power supply terminal and providing a more stable input basis for the subsequent power management chip U4. Furthermore, the power management chip U4 collects the VBAT voltage stabilized by the Zener diode D2 in real time through its power input terminal, calculates the remaining battery capacity, charging / discharging current, and health status using its internal algorithm, and converts this status information into electrical signals. These signals are then transmitted to the battery status signal terminal H of the main control chip U1. When the power management chip U4 detects an abnormal battery capacity, it sends an abnormal status signal to the main control chip U1, prompting the main control chip U1 to take appropriate protective measures.

[0036] like Figure 1 and Figure 2As shown, in one embodiment, the battery management module 300 further includes a third current-limiting resistor R9. The first end of the third current-limiting resistor R9 is connected to the status signal terminal of the power management chip U4, and the second end of the third current-limiting resistor R9 is connected to the battery status signal terminal H of the main control chip U1. In this embodiment, the third current-limiting resistor R9 can precisely limit the current flowing from the status signal terminal of the power management chip U4 to the battery status signal terminal H of the main control chip U1. The status signal output by the power management chip U4 may generate currents of varying amplitudes during transmission. If the current is too large, it may impact the battery status signal terminal H of the main control chip U1, damaging the port or even affecting the overall performance of the main control chip U1. The third current-limiting resistor R9, through its own resistance characteristics, limits the current to a safe and appropriate range, ensuring that the signal can be transmitted stably and safely to the main control chip U1. Specifically, when there is external electromagnetic interference, the third current-limiting resistor R9 can suppress abnormal currents caused by interference, ensuring the integrity and reliability of the signal. On the other hand, when the power management chip U4 malfunctions, causing its status signal terminal to output an abnormally large current, the third current limiting resistor R9 can prevent excessive current from flowing into the battery status signal terminal H of the main control chip U1, thus avoiding damage to the relevant circuits of the main control chip U1 due to overcurrent and protecting the main control chip U1 from damage.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, the magnetic induction switch U3 is model MR1362S. In this embodiment, the MR1362S has a highly sensitive magnetic field sensing capability, which can accurately sense the weak magnetic field changes of the magnet at the bottom of the electronic cigarette. Even under conditions of weak magnetic field strength or interference, it can still reliably trigger the internal circuit state transition, enabling the magnetic induction switch U3 to quickly and accurately output the corresponding level signal when the e-cigarette is inserted into or removed from the charging case. When the e-cigarette is inserted and the magnet approaches, it quickly senses the magnetic field and outputs a low-level signal; when the e-cigarette is removed and the magnetic field disappears, it can promptly output a high-level signal. This highly sensitive response ensures that the main control chip U1 can obtain the insertion and removal status information of the e-cigarette in a timely and accurate manner, thereby efficiently controlling the boost charging function of the charging case, avoiding misjudgments caused by untimely signal response, and thus improving the stability and reliability of the charging process.

[0038] This application also provides an electronic cigarette charging device, including an electronic cigarette charging box and e-cigarette rod identification circuit 10 of any of the above embodiments. In this embodiment, when the electronic cigarette rod is not inserted into the charging box, the magnet at the bottom of the electronic cigarette is not close to the magnetic induction switch U3, the magnetic induction switch U3 is in its initial state, and its signal output terminal outputs a high-level signal. This high-level signal is transmitted to the enable control terminal EN_P of the main control chip U1. After the main control chip U1 detects that the enable control terminal EN_P is a high-level signal, it determines that the e-cigarette rod is in the off-box state. At this time, the main control chip U1 will not activate the boost charging function, the charging box is in standby state, and the first filter capacitor C10 in the main control module 100 continuously filters the power input from the external power supply terminal to provide a stable power foundation for subsequent possible operations. Further, when the electronic cigarette rod is inserted into the charging box, the magnet at the bottom of the electronic cigarette approaches the magnetic induction switch U3, the magnetic induction switch U3 senses the change in magnetic field, its internal circuit undergoes a state transition, and its signal output terminal outputs a low-level signal. The low-level signal is transmitted to the enable control terminal EN_P of the main control chip U1. Upon detecting a low level at the enable control terminal EN_P, the main control chip U1 determines that the tobacco stick is in the charging compartment and immediately activates the boost charging function. This boosts the voltage input from the external power supply to meet the voltage requirements for charging the tobacco stick, providing a stable charging current and initiating charging. Specifically, during charging, if the tobacco stick is removed from the charging compartment again, the magnetic switch U3 senses the change in magnetic field and outputs a high-level signal, which is transmitted to the enable control terminal EN_P of the main control chip U1. Upon detecting that the enable control terminal EN_P goes high, the main control chip U1 determines that the tobacco stick has left the compartment, immediately shuts off the boost function, and stops charging the tobacco stick, avoiding energy waste and safety hazards that might result from continued boosting when the tobacco stick is removed from the compartment.

[0039] Compared with the prior art, this disclosure has at least the following advantages:

[0040] The aforementioned e-cigarette charging case e-cigarette rod identification circuit 10 employs a magnetic induction switch U3, which identifies the rod's insertion status by sensing changes in the magnetic field of the magnet at the bottom of the e-cigarette. Because the magnetic field signal is relatively stable and not easily affected by external interference, it improves the accuracy of rod identification when the rod is in and out of the charging case, reducing false alarms. Furthermore, since the e-cigarette charging case e-cigarette rod identification circuit 10 can accurately determine the rod's insertion and removal status, the main control chip U1 can promptly shut off the charging function when the rod is removed from the charging case, avoiding unnecessary charging operations, thereby reducing energy waste, lowering the charging case's power consumption, and ultimately extending the charging case's usage time.

[0041] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A circuit for identifying the charging case and device of an electronic cigarette, characterized in that, include: The main control module includes a first filter capacitor and a main control chip. The first end of the first filter capacitor is connected to the power input terminal and the external power supply terminal of the main control chip, respectively, and the second end of the first filter capacitor is grounded. The inductive switch module includes a magnetic induction switch and a first current-limiting resistor. The first end of the first current-limiting resistor is connected to an external power supply terminal, the second end of the first current-limiting resistor is connected to the power input terminal of the magnetic induction switch, and the signal output terminal of the magnetic induction switch is connected to the enable control terminal of the main control chip.

2. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 1, characterized in that, The inductive switch module further includes a first voltage divider resistor, the first end of which is connected to the signal output terminal of the magnetic induction switch, and the second end of which is connected to the enable control terminal of the main control chip.

3. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 2, characterized in that, The inductive switch module further includes a second voltage divider resistor. The first end of the second voltage divider resistor is connected to the enable control terminal of the main control chip and the second end of the first voltage divider resistor, respectively, and the second end of the second voltage divider resistor is grounded.

4. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 1, characterized in that, The main control module also includes a boost inductor and a second current-limiting resistor. The first end of the second current-limiting resistor is connected to the battery power supply terminal, the second end of the second current-limiting resistor is connected to the first end of the boost inductor, and the second end of the boost inductor is connected to the voltage switch control terminal of the main control chip.

5. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 4, characterized in that, The main control module also includes a second filter capacitor, the first end of which is connected to the first end of the second current-limiting resistor, and the second end of which is grounded.

6. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 1, characterized in that, The main control module also includes a third filter capacitor. The first end of the third filter capacitor is connected to the output end of the main control chip. The first end of the third filter capacitor is also used to connect to the charging end of the cigarette rod. The second end of the third filter capacitor is grounded.

7. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 1, characterized in that, The electronic cigarette charging case and e-cigarette rod identification circuit also includes a battery management module. The battery management module includes a Zener diode and a power management chip. The negative terminal of the Zener diode is connected to the battery power supply terminal, and the positive terminal of the Zener diode is grounded. The power input terminal of the power management chip is connected to the negative terminal of the Zener diode, and the status signal terminal of the power management chip is connected to the battery status signal terminal of the main control chip.

8. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 7, characterized in that, The battery management module also includes a third current-limiting resistor. The first end of the third current-limiting resistor is connected to the status signal terminal of the power management chip, and the second end of the third current-limiting resistor is connected to the battery status signal terminal of the main control chip.

9. The electronic cigarette charging case and e-cigarette rod identification circuit according to claim 1, characterized in that, The magnetic induction switch is model MR1362S.

10. An electronic cigarette charging device, characterized in that, Includes the electronic cigarette charging case and cigarette holder identification circuit as described in any one of claims 1 to 9.

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