WO2019033888A1 - Dispositif d'émission de chaleur d'un ensemble cigarette électronique, et son procédé de commande - Google Patents

Dispositif d'émission de chaleur d'un ensemble cigarette électronique, et son procédé de commande Download PDF

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Publication number
WO2019033888A1
WO2019033888A1 PCT/CN2018/096065 CN2018096065W WO2019033888A1 WO 2019033888 A1 WO2019033888 A1 WO 2019033888A1 CN 2018096065 W CN2018096065 W CN 2018096065W WO 2019033888 A1 WO2019033888 A1 WO 2019033888A1
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Prior art keywords
pin
chip
microcontroller
resistor
buck
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PCT/CN2018/096065
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English (en)
Chinese (zh)
Inventor
林光榕
郑贤彬
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惠州市新泓威科技有限公司
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Publication of WO2019033888A1 publication Critical patent/WO2019033888A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the invention relates to the technical field of an electronic smoking article, in particular to a heating device for an electronic smoking article and a control method thereof.
  • cigarettes In general, cigarettes emit cigarette smoke when the open flame is burned for smokers to inhale. When the cigarettes are burned, they will decompose and produce harmful substances such as tobacco tar, carbon monoxide, phenol, nitrogen oxides, olefins, and polycyclic aromatic hydrocarbons. These substances can seriously damage human health.
  • an electronic smoking device that can assist smoking is produced on the market, in which smoking users place tobacco products (such as cigarettes and tobacco cores) in smoking. Electrically heated, the tobacco product is baked at a temperature below the flammable temperature of the tobacco product until smoking, and the smoking user is able to inhale the cigarette smoke. Since tobacco products are burned by heat rather than open flames, and the user inhals a large amount of harmful substances generated by burning of tobacco products due to open flames, smoking using electronic smoking articles is widely used.
  • the outer wall of the cigarette body in the standby or smoking state, is generally subjected to constant voltage heating through the heat pipe, and the heat conduction is slow, and the overall temperature of the cigarette body is slow, resulting in a small amount of smoke being sucked out, but After the temperature rises, since the heating cup is closely attached to the outer wall of the cigarette body, the heat is slowly transmitted to the inside through the outer wall of the cigarette body, and the temperature on the outer wall side of the cigarette is too high, and it is easy to burn and produce a burnt smell.
  • the technical solution of the present invention is a heat generating device of the electronic smoking device, which is special in that it comprises a microcontroller, a battery power supply circuit, a buck-boost bridge circuit, a heat generating unit, a resistance sampling circuit of the heat generating unit, and a resistance value of the heat generating unit.
  • the battery power supply circuit comprises a switch and a rechargeable battery
  • the micro-controller is electrically connected to the buck-boost bridge circuit, the heating unit resistance sampling circuit, the heating unit, the heating unit resistance detecting module, and then back to the micro a controller, the heating unit sampling circuit is connected to the resistance detecting module, a feedback circuit is connected between the buck-boost bridge circuit and the heat generating unit, and the feedback circuit is connected back to the microcontroller, when the electronic smoking device During use, when the temperature of the heating unit changes, the resistance value also changes accordingly.
  • the resistance detecting module of the heating unit detects the resistance value of the heating unit and converts it into a corresponding temperature electrical signal and transmits it to the microcontroller, and the microcontroller according to the temperature After the electrical signal is compared with the set temperature value, a control signal is sent to the buck-boost bridge circuit, so that the output voltage of the buck-boost bridge circuit is generated. Changes, power heat-generating unit also changes so as to adjust the temperature stabilization heat generation unit.
  • the method further includes an auxiliary boosting module, wherein the microcontroller is connected to an input end of the auxiliary boosting module, and an output of the auxiliary boosting module is connected to the buck-boosting circuit.
  • the heat generating unit is electrically connected to the short circuit detecting module, and the short circuit detecting module is connected to the microcontroller.
  • the microcontroller is electrically connected to the charging circuit
  • the charger is electrically connected to the charging voltage detecting module and then connected to the microcontroller
  • the charger is electrically connected to the charging circuit and the battery power supply circuit
  • the battery power supply circuit is respectively micro-controlled And power supply from the buck-boost circuit.
  • the microcontroller further electrically connects the LED control module, the switch detection module and the motor vibration control module.
  • the heat generating unit resistance detecting module comprises an operational amplifier U 4 , a resistor R 16 , a resistor R 17 , a capacitor C 12 , a resistor R 19 , a capacitor C 13 , a resistor R 22 , a capacitor C 14 , and a capacitor C 15 .
  • said heating means includes a resistor sensing circuit resistance R 18, the operational amplifier U 4 having a first pin REF, a second pin GND, a third pin VCC, fourth pins IN +, IN- and fifth pin
  • the sixth pin OUT, the fourth pin IN+ of the operational amplifier U 4 is respectively connected to the capacitor C 12 and the resistor R 17 and then connected to the output terminal VOUT of the buck-boost circuit, and the fifth pin IN- is respectively connected to the capacitor C 12 and the resistor.
  • R 16 is connected to the PWM-OUT of the sampling circuit of the heating unit, the connection between the resistor R 16 and the PWM-OUT of the sampling circuit output of the heating unit, and the connection of the resistor R 17 and the output terminal of the buck-boost circuit VOUT Connect the resistor R 18 between the points
  • the sixth pin OUT of the operational amplifier U4 is connected to the resistor R 19 and then respectively connect the current detection signal IDET and the capacitor C 13 , the other end of the capacitor C 13 is grounded, and the first pin of the operational amplifier U 4 REF and a second ground pin GND
  • a third operational amplifier pin VCC U 4 is connected to the resistor R 22 access auxiliary boost VCC-12V, the third pin VCC and
  • the junction between the resistor R 22 are connected to the capacitor C 15 and the capacitor C 14, the capacitor C 15 and the other end grounded capacitor C 14; and when a current passes through the resistor R 18, at both ends of the resistor R 18 will divide the voltage, through the resistor R 16.
  • the resistor R 17 and the capacitor C 12 are filtered once and input to the operational amplifier U 4 .
  • the operational amplifier U 4 amplifies the filtered voltage and filters it through the resistor R 19 and the capacitor C 13 , and then calculates the current detection signal IDET.
  • the resistance of the heating unit is the resistance of the heating unit.
  • the buck-boost bridge circuit comprises a chip U 1 , a chip U 2 , MOS transistors Q 1 and Q 2 , MOS transistors Q 3 and Q 4 , a first Zener diode, a second Zener diode, and a resistor R 1
  • the third pin HO is connected to the gate of the MOS transistor Q 2
  • the tenth pin LO of the chip U 1 is connected to the gate of the MOS transistor Q 1
  • the first pin of the chip U 2 is connected to the capacitor C 4
  • the third pin HO of the chip U 2 is connected to the gate of the MOS transistor Q 3
  • the tenth pin LO of the chip U 2 is connected to the gate of the MOS transistor
  • the other end of the Zener diode D 1 of the first U-chip access pin VCC 1, a chip U 2 are respectively connected to the second pin Zener diode D 2, the capacitor C 2, the other end of the capacitor C 2 chip access U 2 's fourth pin HS, regulated diode
  • the other end of the access tube chip D 2 U VCC 2 of the first pin, chip and chip U 1 U 2 each are grounded VSS ninth pin, an eighth pin boost chip U IN 1 is connected to the microcontroller
  • the signal terminal PWM-UP of the output frequency, the eighth pin IN of the chip U 2 is connected to the signal terminal PWM-DN of the buck output frequency of the microcontroller, and the seventh pin EN of the chip U 1 and the chip U 2 are connected.
  • the MOS transistor Q 3 connects the chip U 1 and the MOS transistors Q 1 and Q 2 through the inductor L 1 , and the boost driving chip U 1 drives the MOS transistor Q 1 and the Q 2 boost output VOUT through the PWM output PWM-UP control signal of the microcontroller.
  • the buck-boost circuit boost drive chip U 1 outputs a signal to turn on the MOS transistor Q 2 and is connected through the inductor L 1
  • the chip U 2 , the MOS transistors Q 4 and Q 3 , and the buck driver chip U 2 drive the MOS transistor Q 4 and the Q 3 buck output VOUT through the PWM output PWM-DN control signal.
  • Another technical solution of the present invention is a control method of the electronic smoking device heat generating device, which is special in that it comprises the following steps:
  • the microcontroller determines whether the time when the switch is closed exceeds the set time, if not, proceeds to step (13), and if so, proceeds to the next step;
  • step (13) The microcontroller starts working timing and judges whether the set working time is up to No. If yes, it proceeds to step (13), and if not, proceeds to the next step;
  • the microcontroller starts measuring the resistance timing and determines whether the set interval time for measuring the resistance value of the heating unit is reached. If not, the timing is continued and judged, and if yes, the next step is entered;
  • the resistance detecting module of the heating unit detects the resistance value of the heating unit, and the microcontroller calculates the corresponding temperature value according to the measured resistance value of the heating unit, and calculates the temperature change rate;
  • step (7) comparing the temperature value with the set smoking temperature value, if equal to the set smoking temperature value, proceeding to the next step; if less than the set smoking temperature value, proceeding to step (9); If it is greater than the set smoking temperature value, proceed to step (10);
  • step (10) reducing the voltage output of the buck-boost bridge circuit by the microcontroller, so that the power of the heat-generating unit is lowered, thereby lowering the temperature, and returning to step (4);
  • step (12) comparing the temperature value with the set standby temperature value, if equal to the set standby temperature value, then proceeds to step (8); if less than the set standby temperature value, proceeds to step (9); If it is greater than the set standby temperature value, proceed to step (10);
  • the heating device of the electronic smoking device is provided with a microcontroller, a battery power supply circuit, a buck-boost bridge circuit, a heating unit, a resistance sampling circuit of the heating unit, and a resistance detecting module of the heating unit, and the resistance value of the heating unit changes when the temperature changes.
  • the heating unit resistance detecting module detects the resistance value of the heating unit and converts it into a corresponding temperature electrical signal and transmits the signal to the microcontroller, and the microcontroller sends a control signal according to the temperature electrical signal to the set temperature value.
  • the buck-boost bridge circuit increases or decreases the output voltage of the buck-boost bridge circuit, and the power of the heat-generating unit changes accordingly to adjust the temperature of the heat-generating unit and maintain stability.
  • the microcontroller sets the temperature setting values of smoking and standby to control the heating temperature of the heating unit during smoking and standby, which not only ensures the heating demand during normal smoking, but also avoids heating of the heating unit during standby.
  • the temperature is too high and the cigarette is burnt.
  • FIG. 1 is a circuit block diagram of a heat generating device of an electronic smoking article of the present invention
  • FIG. 2 is a circuit schematic diagram of a resistance detecting module of a heat generating unit of the present invention
  • Figure 3 is a circuit schematic diagram of the buck-boost bridge circuit of the present invention.
  • FIG. 4 is a flow chart showing a control method of a heat generating device of the electronic smoking article of the present invention.
  • Fig. 1 shows a heat generating device of an electronic smoking article of the present invention.
  • the heating device of the electronic smoking device includes a microcontroller, a battery power supply circuit, a buck-boost bridge circuit, a heating unit, a resistance unit sampling circuit of the heating unit, and a resistance detecting module of the heating unit
  • the battery power supply circuit includes Switch and rechargeable battery
  • the microcontroller is electrically connected to the buck-boost circuit, the heating unit resistance sampling circuit, the heating unit, the heating unit resistance detecting module, and then connected back to the microcontroller, the heating unit sampling circuit and the resistance detection
  • the module is connected, a feedback circuit is connected between the buck-boost bridge circuit and the heating unit, the feedback circuit is connected back to the microcontroller, the heating unit is electrically connected to the short-circuit detecting module, the short-circuit detecting module is connected to the microcontroller, and the micro-controller is electrically connected to the charging circuit.
  • the charger is electrically connected to the charging voltage detecting module and then connected to the microcontroller.
  • the charger is electrically connected to the charging circuit and the battery power supply circuit, and the battery power supply circuit supplies power to the microcontroller and the buck-boost bridge circuit respectively, and the microcontroller is connected to the auxiliary riser.
  • the input end of the voltage module, the output end of the auxiliary boost module is connected to the buck-boost circuit, and the microcontroller is also electrically connected to the LED
  • the temperature electrical signal is transmitted to the microcontroller, and the microcontroller outputs a control signal to the buck-boost bridge circuit according to the temperature electrical signal and the set temperature value, so that the output voltage of the buck-boost bridge circuit changes, the heating unit
  • the power also changes to adjust the stability of the temperature of the heating unit.
  • the heat generating unit is composed of a ceramic heating tube and a thermosensitive heating wire (not shown) provided on the ceramic heating tube, and the resistance of the thermistor wire changes with temperature, so the detection is performed.
  • the resistance value can be used to calculate the corresponding temperature value.
  • the heating device of the electronic smoking device of the present invention further includes an auxiliary boosting module.
  • the microcontroller is connected to the input end of the auxiliary boosting module, and the output of the auxiliary boosting module is connected to the lifting and lowering bridge circuit.
  • the auxiliary boost module is used to compensate or assist the buck-boost circuit for better boosting.
  • the heat generating unit is electrically connected to the short circuit detecting module, and the short circuit detecting module is connected to the microcontroller.
  • the short circuit detection module is used to detect whether the heat generating unit is short-circuited. If a short circuit occurs, the microcontroller can instruct the buck-boost bridge circuit to turn off the output, and the electronic smoking device stops working.
  • the microcontroller is electrically connected to the charging circuit
  • the charger is electrically connected to the charging voltage detecting module and then connected to the microcontroller
  • the charger is electrically connected to the charging circuit and the battery power supply circuit, and the battery is connected.
  • the power supply circuit supplies power to the microcontroller and the buck-boost bridge circuit, respectively.
  • the charging voltage detection module operates during charging to prevent overcharging of the charger.
  • the heating device of the electronic smoking device of the present invention is also electrically connected to the LED control module, the switch detection module and the motor vibration control module respectively, and the LED control module is used for controlling the LED indicator to perform different brightness on the smoking state. Or the indication of different colors or combinations thereof, the switch detection module is used for detecting the closed state or the closing time of the button switch, and the motor vibration control module is used for controlling the motor to vibrate when the machine is in the smoking state or when the machine is turned off to prompt the user.
  • the heat generating unit resistance detecting module includes an operational amplifier U 4 , a resistor R 16 , a resistor R 17 , a capacitor C 12 , a resistor R 19 , a capacitor C 13 , a resistor R 22 , a capacitor C 14 , and a capacitor C 15 .
  • the heating unit resistance sampling circuit includes a resistor R 18 , and the operational amplifier U 4 has a first pin REF, a second pin GND, a third pin VCC, a fourth pin IN+, a fifth pin IN-, and a sixth Pin OUT, the fourth pin IN+ of the operational amplifier U 4 is connected to the capacitor C 12 and the resistor R 17 respectively, and then connected to the output terminal VOUT of the buck-boost circuit, and the fifth pin IN- is connected to the capacitor C 12 and the resistor R 16 respectively .
  • the sixth pin OUT of the operational amplifier U4 is connected to the resistor R 19 and then connected to the current detection signal IDET and the capacitor C 13 respectively , the other end of the capacitor C 13 is grounded, and the first pin REF and the second of the operational amplifier U 4 pin GND, a third operational amplifier pin VCC U 4 is connected to the resistor R 22 access auxiliary boost VCC-12V, the third pin 22 between VCC and the resistor R Junction capacitance are respectively connected to capacitors C 15 and C 14, C 15 and the capacitor capacitance C 14 of the other end; when the current through the resistor R 18, the both ends of the resistor R 18 will divide the voltage, via the resistor R 16, a resistor R 17, The capacitor C 12 is filtered once and input to
  • the buck-boost circuit includes a chip U 1 , a chip U 2 , MOS transistors Q 1 and Q 2 , MOS transistors Q 3 and Q 4 , a first Zener diode, a second Zener diode, and a resistor.
  • the first pin VCC of chip U 1 is connected to capacitor C 3 and grounded, chip U 1
  • the third pin HO is connected to the gate of the MOS transistor Q 2
  • the tenth pin LO of the chip U 1 is connected to the gate of the MOS transistor Q 1
  • the first pin of the chip U 2 is connected to the capacitor C 4 and grounded.
  • the third pin HO of the chip U 2 is connected to the gate of the MOS transistor Q 3
  • the tenth pin LO of the chip U 2 is connected to the gate of the MOS transistor Q 4
  • the fourth pin HS of the chip U 1 is passed through the inductor 1 U L access chips HS 2 of the fourth pin
  • the second pin chip U 1 are connected to a Zener diode D
  • capacitor C 1 the other end of the capacitor C 1 U chip access the fourth pin of the HS 1
  • a chip U 2 are respectively connected to the second pin Zener diode D 2, the capacitor C 2, the other end of the capacitor C 2 U 2 chip access the fourth pin HS
  • another Zener diode D 2 A first end of the access pin VCC 2 U chip, the chip U 1 and U 2 each chip ninth pin VSS are grounded, the output frequency of the signal boost eighth chip U IN 1 pin is connected to the microcontroller Terminal PWM-UP, the
  • a method for controlling an electronic smoking device of the present invention includes the following steps:
  • the microcontroller determines whether the switch closing time exceeds the set switching time (3 seconds), if not, proceeds to step (13), and if so, proceeds to the next step;
  • the switch closing time does not exceed the set switching time for 3 seconds, indicating that the switch is accidentally touched, the buck-boost bridge circuit does not output, the heating unit of the electronic smoking device does not work, and the switch closing system is more than 3 seconds. Human operation.
  • step (13) The microcontroller starts working timing and judges whether the set working time (3 minutes) is up to No. If yes, it proceeds to step (13), and if not, proceeds to the next step;
  • the set working time of 3 minutes is the total time that a cigarette can be smoked. Exceeding this time indicates that the cigarette has been completely used, the suction cannot be continued, and the heating unit needs to stop working.
  • the microcontroller starts measuring the resistance timing and determines whether the set interval time for measuring the resistance value of the heating unit is 3 ms. If not, it continues to count and judge, and if yes, proceeds to the next step;
  • the resistance is measured because the resistance of the heating unit needs to be measured at intervals, and the interval is set to 3 ms in the microcontroller.
  • the resistance detecting module of the heating unit detects the resistance value of the heating unit, and the microcontroller calculates the corresponding temperature value according to the measured resistance value of the heating unit, and calculates the temperature change rate;
  • the corresponding temperature value can be calculated by measuring the resistance of the heating unit, and the temperature changes within a certain period of time. Calculate the rate of temperature change.
  • the temperature change rate represents the speed of the temperature change
  • the temperature change rate is larger, indicating that the temperature changes rapidly, while the temperature changes rapidly during smoking, and the temperature changes slowly during standby, and a temperature change can be set between the two. Rate values to distinguish the status of both.
  • the set smoking temperature value indicates that the smoking temperature of the heating unit needs to be adjusted during smoking and stabilized at the set smoking temperature value.
  • step (10) reducing the voltage output of the buck-boost bridge circuit by the microcontroller, so that the power of the heat-generating unit is lowered, thereby lowering the temperature, and returning to step (4);
  • the temperature change rate is continuously lower than the set temperature change rate value, it means that the temperature change continues to be slow, that is, the standby is continued.
  • the standby exceeds the set standby time, it means that the user no longer smokes, and the electronic smoking device needs to be turned off.
  • step (12) comparing the temperature value with the set standby temperature value, if it is equal to the set standby temperature value, proceeding to step (8); if less than the set standby temperature value, proceeding to step (9); if greater than Set the standby temperature value, then proceed to step (10);
  • the set standby temperature value is less than the set smoking temperature value.

Abstract

L'invention concerne un dispositif d'émission de chaleur d'un ensemble cigarette électronique, et son procédé de commande. Un microcontrôleur du dispositif d'émission de chaleur d'un ensemble cigarette électronique est connecté électriquement, dans l'ordre, à un montage en pont survolteur/dévolteur, à un circuit d'échantillonnage de valeur de résistance d'unité d'émission de chaleur, à une unité d'émission de chaleur et à un module de détection de valeur de résistance d'unité d'émission de chaleur, et est ensuite connecté en retour au microcontrôleur ; le circuit d'échantillonnage d'unité d'émission de chaleur est connecté au module de détection de valeur de résistance ; un circuit de contre-réaction est connecté entre le montage en pont survolteur/dévolteur et l'unité d'émission de chaleur, et le circuit de contre-réaction est connecté en retour au microcontrôleur ; lorsqu'un ensemble cigarette électronique est en cours d'utilisation, et lorsque la température de l'unité d'émission de chaleur est modifiée, une valeur de résistance associée est également modifiée de manière correspondante, et le module de détection de valeur de résistance d'unité d'émission de chaleur détecte la valeur de résistance de l'unité d'émission de chaleur et la convertit en un signal électrique de température correspondant en vue de son émission vers le microcontrôleur ; et le microcontrôleur compare le signal électrique de température avec une valeur de température définie puis envoie un signal de commande au montage en pont survolteur/dévolteur, de façon à modifier une tension de sortie du montage en pont survolteur/dévolteur et à modifier également la puissance de l'unité d'émission de chaleur, et en conséquence, à réguler la température de l'unité d'émission de chaleur de manière à ce qu'elle soit stable.
PCT/CN2018/096065 2017-08-15 2018-07-18 Dispositif d'émission de chaleur d'un ensemble cigarette électronique, et son procédé de commande WO2019033888A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710697338.0A CN107467718B (zh) 2017-08-15 2017-08-15 电子烟具的发热装置及其控制方法
CN201710697338.0 2017-08-15

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WO2019033888A1 true WO2019033888A1 (fr) 2019-02-21

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CN (1) CN107467718B (fr)
WO (1) WO2019033888A1 (fr)

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