WO2018107494A1 - 一种电子烟的设计方法、控制方法及电子烟 - Google Patents
一种电子烟的设计方法、控制方法及电子烟 Download PDFInfo
- Publication number
- WO2018107494A1 WO2018107494A1 PCT/CN2016/110485 CN2016110485W WO2018107494A1 WO 2018107494 A1 WO2018107494 A1 WO 2018107494A1 CN 2016110485 W CN2016110485 W CN 2016110485W WO 2018107494 A1 WO2018107494 A1 WO 2018107494A1
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- WO
- WIPO (PCT)
- Prior art keywords
- electronic cigarette
- heating wire
- sampling resistor
- resistor
- control chip
- Prior art date
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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
- A24F40/10—Devices using liquid inhalable precursors
-
- 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
- A24F40/60—Devices with integrated user interfaces
-
- 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
- A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
Definitions
- the present invention relates to the field of electronic cigarette technology, and in particular, to a method, a control method, and an electronic cigarette for an electronic cigarette.
- Electronic cigarette is a relatively common artificial electronic cigarette product, mainly used for smoking cessation and alternative cigarettes; the structure of electronic cigarette mainly includes a battery assembly and an atomizing assembly.
- the atomization assembly includes an atomization sleeve, a smoke oil adsorbing member disposed in the atomization sleeve, and a heating wire, and the heating wire is attached to the smoke oil adsorbing member to atomize the smoke adsorbed by the smoke oil adsorbing member Oil, when the smoker's smoking action is detected, the battery component supplies power to the atomizing component, and the atomizing component is turned on; when the atomizing component is turned on, the heating wire is heated, and the smoke oil is evaporated by heat to form a simulated smoke.
- the aerosol gives the user a feeling of smoking when they smoke.
- the battery assembly of the existing electronic cigarette is usually provided with a battery, a microprocessor, a charge management chip, a battery protection chip, a transistor switch, etc.
- a microprocessor a charge management chip
- a battery protection chip a transistor switch
- different chips are selected/designed according to different materials of the heating wire. Soldering the chip and the component one by one on the circuit board on which the circuit is laid, and then programming the program into the microprocessor, and finally debugging the program to output the appropriate power of the battery component, so that the atomization is performed.
- the component is atomized to the desired temperature. Therefore, the number of chips in the existing electronic cigarettes is large, and complicated connection, testing, and adjustment are required at the time of design, the design process is complicated, the production efficiency is low, and the cost is high.
- existing electronic cigarette control methods result in low product yield, poor product consistency, and poor user experience.
- the present invention is directed to a technical problem in the prior art that has a large number of chips in an electronic cigarette, a complicated design process, low production efficiency, and high cost, and provides an electronic cigarette design method, a control method, and an electronic method.
- Smoke the main circuit of the electronic cigarette can be integrated on a control chip, expand the use of the control chip, and greatly simplify the design process of the electronic cigarette, easy to manufacture, high production efficiency and low cost of production solutions correction page (Rule 91) ISA/CN Technical solution
- the present invention provides a method for designing an electronic cigarette, the electronic cigarette comprising a heating wire, a first sampling resistor and a control chip, wherein the heating wire is used for atomizing smoke oil to form smoke, and the control The chip is configured to control the current of the heating wire according to the resistance value of the first sampling resistor when the electronic cigarette starts to work, and the design method comprises the following steps:
- the determined electric heating wire and the first sampling resistor are electrically connected to the control chip, respectively, to design the electronic cigarette.
- the present invention provides a method for controlling an electronic cigarette, the electronic cigarette comprising a heating wire, a first sampling resistor and a control chip, wherein the heating wire is used for atomizing smoke oil to form smoke, The resistance value of the heating wire changes with temperature, and the first sampling resistor is electrically connected to the control chip;
- the control method includes:
- control chip controls a current of the electric heating wire when the electronic cigarette starts to work according to a resistance value of the first sampling resistor
- the control chip detects an actual resistance value of the electric heating wire in actual operation, and controls a current flowing through the electric heating wire according to the actual resistance value to control an operating temperature of the electric heating wire. Within the preset range.
- the present invention provides an electronic cigarette, including a heating wire, a first sampling resistor, and a control chip.
- the electric heating wire is used for atomizing the smoke oil to form a smoke
- the first sampling resistor is electrically connected to the control chip
- the control chip is configured to start the electronic cigarette according to the resistance value of the first sampling resistor. The current of the heating wire during operation.
- the chip design engineer does not need to consider the material of the heating wire when designing the control chip, so that the control chip can be extended relative to the prior art.
- the application engineer only corrects the page when designing the entire electronic cigarette circuit (Article 91) ISA/CN According to different materials and different target temperatures, different heating wires and first sampling resistors are selected to complete different design requirements, without cumbersome connection, testing and adjustment, thus greatly simplifying the electronic cigarette circuit.
- the design the manufacturing is convenient, the production efficiency is high, and the production cost is low; in addition, the electronic cigarette control method of the invention improves the yield of the product, has good product consistency, and improves the user experience.
- FIG. 1 is a flowchart of a method for designing an electronic cigarette according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a circuit of a first type of electronic cigarette according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a circuit of a second electronic cigarette according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a circuit of a third electronic cigarette according to an embodiment of the present invention.
- FIG. 5 is a flowchart of a method for controlling an electronic cigarette according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of an internal circuit of a first electronic cigarette according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of an internal circuit of a second electronic cigarette according to an embodiment of the present invention.
- FIG. 8A is a circuit diagram of a first part of a control chip in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
- 8B is a circuit diagram of a second part of a control chip in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
- FIG. 9 is a circuit schematic diagram of a button module in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
- FIG. 10 is a circuit diagram of a display module in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
- FIG. 11 is a schematic diagram of an internal circuit of a third electronic cigarette according to an embodiment of the present invention.
- FIG. 12 is a schematic diagram of a fourth internal circuit of an electronic cigarette according to an embodiment of the present invention.
- the embodiment of the present invention provides a method for designing an electronic cigarette, which is used to solve the technical problem that the number of electronic cigarette chips in the prior art is large, the design process is complicated, the production efficiency is low, and the cost is high, and the electronic cigarette can be disposed.
- the main circuit is integrated on a control chip to expand the use of the control chip, and greatly simplify the design process of the electronic cigarette, easy to manufacture, high production efficiency and low production cost.
- An embodiment of the present invention provides a method for designing an electronic cigarette, the electronic cigarette comprising a heating wire, a first sampling resistor and a control chip, wherein the heating wire is used for atomizing smoke oil to form smoke, and the control chip
- the design method includes the following steps: Sl l, determining a resistance value of the heating wire; S12, according to the Determining a resistance value of the electric heating wire, determining a resistance value of the first sampling resistor; S13, electrically connecting the determined heating wire and the first sampling resistor to the control chip, respectively, to design the electronic cigarette.
- the main circuit of the electronic cigarette such as a charging management circuit, a voltage stabilizing circuit, a microprocessor, a battery protection circuit, and the like are integrated on one control chip, and the chip design engineer is at the design office.
- the control chip When the control chip is used, there is no need to consider the material of the heating wire, so that the use range of the control chip can be expanded compared with the prior art; in addition, the application engineer only needs to design according to different materials when completing the design of the whole electronic cigarette circuit. And different target temperatures, electric heating wires with different resistance values and first sampling resistors are connected to the control chip, and electronic cigarettes satisfying different design requirements are designed without cumbersome connection, testing and adjustment of each circuit. Therefore, the design of the electronic cigarette circuit is greatly simplified, the manufacturing is easy, the production efficiency is high, and the production cost is low.
- an embodiment of the present invention provides a method for designing an electronic cigarette, wherein the electronic cigarette includes a heating wire, a first sampling resistor and a control chip, and the heating wire is used for atomizing smoke oil to form smoke.
- the control chip is configured to control a current of the heating wire according to a resistance value of the first sampling resistor when the electronic cigarette starts to work, and the design method includes the following steps:
- the determined electric heating wire and the first sampling resistor are electrically connected to the control chip, respectively, to design the electronic cigarette.
- the main circuits of the electronic cigarette such as a charging management circuit, a voltage stabilizing circuit, a microprocessor,
- the battery protection circuit and the like are integrated on the control chip. Based on the integrated control chip, the required electric heating wire and the first sampling resistor are selected for connection, and the required electronic cigarette can be set. When the heating wire is selected, the resistance value of the heating wire required for the electronic cigarette is selected according to the design requirement, and the corresponding heating wire is selected according to the resistance value. After determining the resistance value of the heating wire, the resistance value of the first sampling resistor can be calculated according to the resistance value of the heating wire, and then the corresponding first sampling resistor is selected according to the resistance value. By connecting the selected heating wire and the first sampling resistor to the integrated control chip, an electronic cigarette that meets the demand can be designed.
- the integrated control chip can extend the range of use of the control chip, and the design of the electric heating wire and the first sampling resistor with different resistance values can greatly simplify the circuit design of the electronic cigarette, facilitate manufacturing, high production efficiency and low production cost.
- the resistance value of the heating wire is a target resistance value, wherein the target resistance value is a resistance value of the heating wire at a working target temperature. It is to be understood that the resistance value of the electric heating wire may be a resistance value at a non-working target temperature, which is not specifically limited herein.
- the resistance value of the heating wire changes with temperature, that is, the resistance value of the heating wire has a one-to-one correspondence with the operating temperature.
- the target resistance value is determined by the resistance value corresponding to the heating wire at the working target temperature, and then the resistance value of the corresponding first sampling resistor is determined according to the target resistance value; therefore, at the beginning of the electronic cigarette
- the control chip may control, according to the resistance value of the first sampling resistor, a current flowing through the heating wire to be equal to or slightly larger than a current flowing through the heating wire when the heating wire reaches a working target temperature.
- the current flowing through the electric heating wire when the electric heating wire reaches the working target temperature can not only avoid the overheating of the smoke temperature when the electronic cigarette starts to work, but also simplify the design of the control chip. It can be understood that the magnitude of the current of the heating wire is not specifically limited herein when the electronic cigarette starts to work.
- step S12 is specifically:
- Correction page (Article 91) ISA/CN
- the value can be set as needed. After determining the resistance value of the heating wire, the resistance value of the first sampling resistor can be calculated through a certain functional relationship, and then the corresponding first sampling resistor is selected according to the resistance value. In the process of designing the circuit, according to the different working temperatures of the electronic cigarette, the electric heating wire with different resistance values and the first sampling resistor can be selected, and the circuit of the electronic cigarette can be quickly designed.
- X* (multiplication) 10 4 X is 0.2, 0.25, 0.3, 0.35, etc., and is not specifically limited.
- the step S12 is specifically: determining a resistance value of the first sampling resistor according to a resistance value of the electric heating wire, wherein a resistance value of the electric heating wire in the table is determined It is a discrete value and corresponds to the resistance value of the first sampling resistor.
- one end of the heating wire 21 is electrically connected to the control chip 22, and the other end of the heating wire 21 is electrically connected to the positive electrode B+ of the power source.
- One end of the first sampling resistor R0 is grounded, and the other end of the first sampling resistor R0 is only electrically connected to the control chip 22, that is, one end of the first sampling resistor R0 electrically connected to the control chip 22 is only used.
- the control program is written into the control chip, and the resistance value of each unit of the first sampling resistor corresponds to the control chip to generate a certain preset duty ratio.
- the PWM wave causes the resistance value of the first sampling resistor to be proportional or inversely proportional to the PWM wave.
- the current flowing through the heating wire can be controlled by the resistance value of the first sampling resistor when the electronic cigarette starts to work, thereby controlling the operating temperature of the heating wire.
- the first sampling resistor R0 can be set as a pull-up resistor, one end of the first sampling resistor R0 is electrically connected to the power source positive pole B+ of the electronic cigarette, and the first sampling resistor R0 is another. One end is only electrically connected to the control chip 22. Therefore, setting the first sampling resistor R0 as a pull-up resistor or a pull-down resistor can be set as needed, and is not specifically limited herein.
- step S11 is specifically:
- the material of the heating wire is selected from materials whose resistance value changes with temperature, so that the resistance value of the heating wire has a corresponding correlation characteristic with the working temperature.
- the resistance value of the heating wire it is selected according to the design requirement, that is, according to the working target temperature of the heating wire, the material of the heating wire, and the power supply voltage of the electronic cigarette.
- the atomization temperature of the electric heating wire of the electronic cigarette to be designed to work stably that is, the working temperature of the heating wire is 280 ° C
- the material of the heating wire is titanium
- the supply voltage of the electronic cigarette is 4.2V. According to these design requirements, the resistance value of the heating wire required for the electronic cigarette is calculated.
- the temperature of the heating wire may be within a certain preset range, that is, the working target temperature may be a preset range value; correspondingly, the heating wire 21
- the resistance value is selected to be a resistance value corresponding to a preset range value of the work target temperature.
- step S12 further includes:
- the design of the second sampling resistor may be added to the electronic cigarette.
- one end of the second sampling resistor R01 is electrically connected to the control chip 22, and the other end of the second sampling resistor R01 is grounded. .
- the control chip 22 controls the magnitude of the current or voltage before the electric heating wire reaches the preset temperature according to the resistance value of the second sampling resistor R01 to control the current from the normal temperature to the pre-operative time when the electronic cigarette works.
- Set the length of time, in which the preset temperature is the working target temperature of the heating wire. For example, the working temperature of the heating wire is 280 ° C.
- the heating wire can be quickly heated from normal temperature to 280 ° C, and the present invention can be set by the second sampling resistor.
- the length of time during which the heating wire is heated from normal temperature to 280 ° C is controlled, for example, the heating time is 2 seconds later than the existing electronic cigarette.
- step S12 further includes:
- Correction page (Article 91) ISA/CN Electrically connected to the control chip 22, the other end of the third sampling resistor R02 is grounded, so that the control chip 22 controls the charging current according to the resistance value of the third sampling resistor R02 when charging the electronic cigarette. the size of. Therefore, in the design process, a different third sampling resistor R02 may be selected according to the demand for the charging current. For example, when it is necessary to select a charging current of 1 A or a charging current of 2 A, the third sampling resistor R02 of different resistance values can be selected, so that the design efficiency is high, the speed is fast, and the cost is low.
- the third sampling resistor R02 can also be set as a pull-up resistor, that is, one end of the third sampling resistor R02 is electrically connected to the control chip 22, and the other end of the third sampling resistor R02. Electrically connected to the positive pole B+ of the electronic cigarette.
- step S12 further includes:
- the control chip 22 controls the operation of the heating wire 21 according to the control amount so that the temperature of the heating wire 21 is relatively stably within a preset range.
- control chip 22 includes a control module 41, a voltage regulator circuit module 42 and a first voltage dividing resistor R04;
- the first voltage dividing resistor R04 is connected to the first sampling resistor R0, and an end of the first voltage dividing resistor R04 that faces away from the first sampling resistor R0 and an output of the voltage stabilizing circuit module 42
- the input pin of the voltage stabilizing circuit module 42 is electrically connected to the positive electrode B+ of the electronic cigarette, and the end of the first sampling resistor R0 that faces away from the first voltage dividing resistor R04 is grounded.
- the other end of a sampling resistor R0 is electrically connected to the first voltage dividing resistor R04 and the control module 22.
- one end of the heating wire 21 is electrically connected to the control module 22, and the other end of the heating wire 21 is electrically connected to the positive electrode B+ of the power source.
- control module the voltage regulator circuit module and the first voltage dividing resistor are integrated in the control chip.
- the control module controls the current flowing through the heating wire, and the first voltage dividing resistor divides the power of the electronic cigarette, and the voltage stabilizing circuit module adjusts the power supply greater than 3V to supply a stable 3V voltage for the control module to supply power. .
- the main circuit of the electronic cigarette can be integrated on one control chip, the use range of the control chip is expanded, and the design process of the electronic cigarette is greatly simplified, and the page is corrected.
- Article 91) ISA/CN In manufacturing, high production efficiency and low production costs.
- the present invention further provides a method for controlling an electronic cigarette, wherein the electronic cigarette includes a heating wire, a first sampling resistor and a control chip, and the heating wire is used. Forming smoke in the atomized smoke oil, the resistance value of the heating wire changes with temperature, and the first sampling resistor is electrically connected to the control chip;
- the control method includes:
- the control chip controls, according to a resistance value of the first sampling resistor, a current of the heating wire when the electronic cigarette starts to work;
- the control chip detects an actual resistance value of the electric heating wire in actual operation, and controls a current flowing through the electric heating wire according to the actual resistance value, so as to control an operating temperature of the electronic cigarette. Within the preset range.
- the electronic chip is designed by using the integrated control chip, the selected heating wire and the first sampling resistor in the first embodiment, so that the control chip in the electronic cigarette integrates the main circuit of the electronic cigarette to expand the control.
- the applicable range of the chip, the heating wire and the first sampling resistor select different resistance values to meet different design requirements, so that the designed electronic cigarette can control the working temperature of the heating wire.
- the control chip controls the current flowing through the heating wire according to the resistance value of the first sampling resistor.
- the control chip Since the resistance value of the heating wire changes with the working temperature, after the heating wire works, the control chip obtains the actual working temperature of the heating wire by detecting the actual resistance value of the heating wire in actual work, and then passes through the heating wire through the control.
- the current is controlled to control the temperature of the smoke, that is, the operating temperature of the heating wire within a preset range. It can be understood that the actual resistance value of the heating wire in actual operation can be characterized by the magnitude of the potential difference across the heating wire.
- the electronic cigarette further includes a second sampling resistor electrically connected to the control chip, and the control method further includes:
- control chip controlling, by the control chip, a length of time required for the heating wire to start heating to a working target temperature according to a resistance value of the second sampling resistor.
- the control chip controls the current when the heating wire starts working to control the length of time from the normal temperature to the preset temperature when the electronic cigarette works, wherein, the preset
- the temperature is the working target temperature of the heating wire.
- the working temperature of the heating wire is 280 ° C.
- the heating wire can be quickly heated from normal temperature to 280 ° C, and the control chip of the present invention can control the heating wire from the second sampling resistor.
- the temperature is heated to 280 ° C at room temperature, such that the heating time is 2 seconds later than the existing electronic cigarette.
- the temperature of the heating wire can be changed not too fast, and the taste of the user is better when used, thereby improving the user experience.
- the electronic cigarette further includes a third sampling resistor R02 electrically connected to the control chip 22, and the control method further includes:
- the control chip 22 controls the magnitude of the charging current according to the resistance value of the third sampling resistor R02 when charging the electronic cigarette.
- the resistance value of the third sampling resistor R02 is characterized by the voltage of the end of the third sampling resistor R02.
- the charging pin CHG of the control chip 22 is electrically connected to an external power source to charge the power source BAT of the electronic cigarette.
- the electronic cigarette further includes a correction circuit 23 electrically connected to the control chip 22, and the control method further includes:
- the correction circuit 23 calculates the control amount according to the actual operating temperature of the heating wire 21 and the working target temperature difference, and the control chip controls the heating wire 21 to operate according to the control amount so that the temperature of the heating wire 21 is at a temperature. Within the preset range. By setting the correction circuit 23, the stability of the entire electronic cigarette system is increased.
- the correction circuit 23 includes a first capacitor C01, a second capacitor C02, and a loop compensation resistor R03.
- the first capacitor C01 is connected in series with the loop compensation resistor R03.
- One end of a capacitor C01 that faces away from the loop compensation resistor R03 is connected to the control chip 22, and one end of the loop compensation resistor R0 3 away from the first capacitor C01 is grounded; one end of the second capacitor C02 is grounded.
- the other end of the second capacitor C02 is electrically connected to one end of the first capacitor C01 away from the loop compensation resistor R03.
- the control chip 22 is provided with a control module 41, a voltage stabilization circuit module 42, a detection circuit 43, and an error comparison circuit 44, wherein the detection circuit 43 is configured to detect the voltage at the end of the heating wire 21, and Outputting the detection result to the error comparison circuit 44; the error comparison circuit 44 is configured to compare the voltage Us delivered by the detection circuit with the preset target voltage value U0 to determine the actual operating temperature and the working target temperature difference;
- the control module 41 controls the operation of the heating wire 21 in accordance with the control amount output from the correction circuit 23.
- the electronic cigarette further includes a smoking control switch K1, a first LED display unit 24, and a second LED that are both connected to the control chip 22.
- the display unit 25, the control method further includes:
- the smoking control switch K15 is continuously triggered within 3 seconds, the first LED display unit 24 displays the remaining amount of the electronic cigarette battery, and the second LED display unit 25 flashes 3 times, and then locks the machine;
- the smoking control switch is continuously triggered K15 times within 3 seconds, and the second LED display unit 25 flashes 5 times to enter the standby mode.
- the smoking control switch K1 when the electronic cigarette power supply voltage is lower than the first preset value, the smoking control switch K1 is triggered, the control chip 22 controls the second LED display unit 25 to flash 10 times and The heating wire 21 is controlled to be in a non-operating state.
- the first preset value is 3.47V
- the first LED display unit 24 includes LED1 to LED4
- the second LED display unit 25 includes LED 5. It can be understood that the number of the LEDs is set as needed, and is not specifically limited herein.
- the designed electronic cigarette can be used to control the working temperature of the heating wire, improve the yield of the product, and the product consistency is good, thereby improving the user experience.
- the present invention further provides an electronic cigarette, including a heating wire 21, a first sampling resistor R0 and a control chip 22;
- the heating wire 21 is electrically connected to the control chip and used to atomize the smoke oil to form a smoke, and the control chip 22 is configured to control, according to the resistance value of the first sampling resistor R0, the electronic cigarette to start working.
- the current of the heating wire 21 Specifically, in this embodiment, one end of the first sampling resistor R0 is grounded, and the other end of the first sampling resistor R0 is only electrically connected to the input pin of the control chip 22.
- first sampling resistor R0 can also be set as a pull-up resistor, that is, one end of the first sampling resistor R0 is electrically connected to the positive pole B+ of the power source, and the other end of the first sampling resistor R0 is only The input pins of the control chip 22 are electrically connected.
- the electronic cigarette in the embodiment of the present invention is designed by the design method of the first embodiment.
- the control chip integrates the main circuit in the existing electronic cigarette, and can expand the use range of the control chip.
- the heating wire and the first sampling resistor can select different resistance values by selecting different resistance values (Article 91) ISA /CN According to the demand, the designed heating wire is easy to manufacture, high in production efficiency and low in production cost.
- the heating wire in this embodiment can control the operating temperature of the heating wire.
- the control chip controls the current flowing through the heating wire according to the resistance value of the first sampling resistor.
- the control chip Since the resistance value of the heating wire changes with the working temperature, after the heating wire works, the control chip obtains the actual working temperature of the heating wire by detecting the actual resistance value of the heating wire in actual work, and then passes through the heating wire through the control. The current is controlled to control the operating temperature of the heating wire within a preset range. Therefore, the control using the electronic cigarette of the embodiment improves the yield of the product, the product consistency is good, and the user experience is improved.
- control chip 22 includes a control module 41, a voltage regulator circuit module 42 and a first voltage dividing resistor R04;
- the first voltage dividing resistor R04 is connected to the first sampling resistor R0, and an end of the first voltage dividing resistor R04 that faces away from the first sampling resistor R0 and an output of the voltage stabilizing circuit module 42
- the input pin of the voltage stabilizing circuit module 42 is electrically connected to the power source B+ of the electronic cigarette, and the end of the first sampling resistor R0 that faces away from the first voltage dividing resistor R04 is grounded, the first sampling
- the other end of the resistor R0 is electrically connected to the first voltage dividing resistor R04 and the control module 41.
- one end of the heating wire 21 is electrically connected to the control module 41, and the other end of the heating wire 21 is electrically connected to the positive electrode B+ of the power source.
- control module the voltage regulator circuit module and the first voltage dividing resistor are integrated in the control chip.
- the control module controls the current flowing through the heating wire, and the first voltage dividing resistor divides the power of the electronic cigarette, and the voltage stabilizing circuit module adjusts the power supply greater than 3V to supply a stable 3V voltage for the control module to supply power. .
- the control module 41 includes a control unit 61, a first resistor R43, a second resistor R41, a third resistor R42, a fourth resistor R38, and a fifth a resistor R39, a capacitor C22, a first field effect transistor Q8 and a second field effect transistor Q9;
- the drain of the first field effect transistor Q8 is electrically connected to one end of the heating wire 21 and one end of the fourth resistor R38, and the other end of the fourth resistor R38 and the control unit 61 are respectively connected. Electrically connected, one end of the capacitor C2 2 is electrically connected to the control unit 61, the other end of the capacitor C22 is grounded, the fifth resistor R 39 is connected in parallel with the capacitor C22; the first field effect transistor Q8 The source of the first field effect transistor Q 8 is electrically connected to one end of the control unit 61 and the third resistor R42, and the other end of the third resistor R42 is grounded; Rule 91) ISA/CN [0090] The drain of the second field effect transistor Q9 is electrically connected to one end of the second resistor R41, and the other end of the second resistor R41 is electrically connected to one end of the heating wire 21, the second The source of the FET Q9 is grounded, the gate of the second FET Q9 is electrically connected to one end of the control unit 61
- one end of the first sampling resistor R0 is electrically connected to the control unit 61, and the other end of the first sampling resistor R0 is grounded; one end of the first voltage dividing resistor R04 is connected in series with the first sampling resistor R0. The other end of the first voltage dividing resistor R04 is electrically connected to the voltage regulator circuit module 42 of the electronic cigarette.
- the fourth resistor R38, the fifth resistor R39, and the capacitor C22 constitute a voltage dividing circuit unit 62 in the control module 41.
- the voltage dividing circuit unit 62 is mainly used when the voltage at the connection terminal 0- is greater than 3V, and the control unit 61 can also read the voltage value there.
- the control unit 61 outputs a standard duty ratio, and turns on the first field effect transistor Q8 to heat the heating wire 21;
- the first field effect transistor Q8 is turned off, and the second field effect transistor Q9 is turned on to detect the actual operating voltage and the actual operating current of the heating wire 21.
- the actual working voltage of the heating wire is calculated by detecting the voltage value of the end of the heating wire 21, and based on the voltage of the positive electrode B+ of the electronic cigarette, the actual working current of the heating wire passes the voltage value of the second resistor R41, and Calculated based on the resistance value of the second resistor R41. After obtaining the actual working voltage and the actual working current of the heating wire 21, calculating the resistance value of the heating wire 21 in actual operation, and obtaining the electric heating according to a pre-established correspondence table between the temperature of the heating wire and the resistance value.
- the actual operating temperature of the wire 21, which in turn compares the actual operating temperature with a preset target operating temperature, and controls the actual operating temperature of the heating wire 21 by adjusting the duty ratio output to the heating wire 21 Within the preset range.
- the magnitude of the resistance of the first sampling resistor R0 is characterized by the magnitude of the voltage at the end of the first sampling resistor R0, and the control unit 61 is opposite to the end of the first sampling resistor R0.
- the voltage is subjected to analog-to-digital conversion to obtain a voltage value at the end of the first sampling resistor R0.
- the electronic cigarette further includes a second sampling resistor R 01, one end of the second sampling resistor R01 is grounded, and the second sampling resistor R01 is The other end is electrically connected to the input pin of only the control unit 61.
- the control unit 61 controls the length of time required for the heating wire 21 to start heating to the working target temperature according to the resistance value of the second sampling resistor R01.
- the corrected page (Article 91) ISA/CN The magnitude of the resistance of the second sampling resistor R01 is characterized by the magnitude of the voltage at the end of the second sampling resistor R01.
- the control unit 61 performs analog-to-digital conversion on the voltage of the end of the second sampling resistor R01 to obtain the second sampling resistor R01. The voltage value at the end.
- the control unit 61 controls the length of time from the normal temperature to the preset temperature when the electronic cigarette works according to the resistance value of the second sampling resistor R0 1 , wherein the preset temperature It is the working target temperature of the heating wire.
- the working temperature of the heating wire is 280 ° C.
- the heating wire can be quickly heated from normal temperature to 280 ° C, and the present invention can be set by the second sampling resistor.
- the length of time during which the heating wire is heated from normal temperature to 280 ° C is controlled, for example, the heating time is 2 seconds later than the existing electronic cigarette. By controlling the heating time, the temperature of the heating wire can be changed not too fast, and the taste of the user is better when used, thereby improving the user experience.
- the electronic cigarette further includes a third sampling resistor R02 connected to the control chip 22, and the control chip is charged when the electronic cigarette is charged. 22 controls the magnitude of the charging current according to the resistance value of the third sampling resistor R02.
- the resistance value of the third sampling resistor R02 is characterized by the voltage of the end of the third sampling resistor R02.
- the charging module 40 and the control module 41 are disposed in the control chip 22, and the charging module 40 is electrically connected to the control module 41 and the charging pin CHG. When charging, the charging pin CHG of the control chip is electrically connected to an external power source, and the electronic cigarette power source BAT can be charged.
- the electronic cigarette further includes a correction circuit 23 connected to the control chip 22, and the correction circuit 23 is based on the heating wire 21 when the electronic cigarette is in operation.
- the actual operating temperature is compared with the operating target temperature to calculate a control amount, and the control chip 22 controls the operation of the heating wire 21 in accordance with the control amount.
- the correction circuit 23 includes a first capacitor C01, a second capacitor C02, and a loop compensation resistor R03.
- the first capacitor C01 is connected in series with the loop compensation resistor R03.
- One end of the first capacitor C 01 that faces away from the loop compensation resistor R03 is connected to the control chip 22, and one end of the loop compensation resistor R03 is away from the first capacitor C01; one end of the second capacitor C02
- the other end of the second capacitor C02 is electrically connected to one end of the first capacitor C01 away from the loop compensation resistor R03.
- the control chip 22 is provided with a control module 41, a voltage stabilization circuit module 42, and a detection power correction page (Article 91) ISA/CN
- the circuit 43 and the error comparison circuit 44, the detection circuit 43 is configured to detect the voltage at the end of the heating wire 21, and output the detection result to the error comparison circuit 44;
- the error comparison circuit 44 is used to The voltage Us sent by the detection circuit is compared with a preset target voltage value U0 to determine a difference between the actual operating temperature and the working target temperature; the control module 41 controls the heating wire 21 according to the control amount output by the correction circuit 23. jobs.
- the control chip 22 further includes a charging management circuit module 81, a boosting circuit module 82, a voltage stabilizing circuit module 83, and a reset circuit module 84. Battery voltage detection circuit module 85 and battery protection circuit module 86.
- the control unit U10 has the same circuit structure as the microprocessor of the STM32F030K6 model produced by the STMicroelectronics Group. Therefore, the internal structure of the control unit U10 will not be described here.
- the electronic cigarette also includes a charging USB interface Pl, a button module, and a display module.
- the charging USB interface P1 is used for external charging of the electronic cigarette, which comprises five interfaces, the interface 2, the interface 3 and the interface 4 are used for writing the program to the electronic cigarette, the interface 5 is grounded, and the interface 1 is passed through the resistor R27. It is electrically connected to the charge management circuit module 81.
- the charging management circuit module 81 includes a charging management circuit unit U7 and a resistor R32, wherein the circuit of the charging management circuit unit U7 has the same circuit structure as the charging management chip of the AP5056 model produced by Wuxi Xinpeng Microelectronics Co., Ltd. Therefore, the internal structure of the charging management circuit unit U7 will not be described herein.
- One end of the resistor R32 is connected to the PR OG pin of the charge management circuit unit U7, the other end of the resistor R32 is grounded, and the BAT pin of the charge management circuit unit U7 is connected to the positive electrode B+ of the cigarette.
- the CHGING pin of the charging management circuit unit U7 is at a low level, and the DONE pin is at a high level; after the electronic cigarette is charged, the CHGING bow I of the charging management circuit unit U 7 is high. Flat, DONE bow
- the boosting circuit module 82 includes a boosting circuit unit U8, an inductor L2, a diode D4, a resistor R28, and a resistor R31.
- the circuit of the booster circuit unit U8 is the same as that of the booster chip of the model MT3608 produced by Xi'an Aerospace Science and Technology Co., Ltd. Therefore, the circuit structure of the booster circuit unit U8 will not be described herein.
- the boosting circuit module 82 is connected to the power source B+ of the electronic cigarette through the FET Q6 and the transistor Q7.
- the source of the FET Q6 is connected to the power source B+ of the electronic cigarette, the gate of the FET Q6 is connected to the collector of the transistor Q7, the base of the transistor Q7 is connected to the power source 5V_EN through the resistor R33, and the emitter of the transistor Q7 is grounded, the field The drain of the effect transistor Q6 and the end of the inductor L2, the VIN pin of the booster circuit unit U8, and the EN correction page (Article 91) ISA/CN
- the other end of the inductor L2 is connected to the SW pin of the booster circuit unit U8 and the anode of the inductor D4, the cathode of the inductor D4 is connected to one end of the resistor R28, and the other end of the resistor R28 is respectively connected to the booster circuit unit U8.
- the FB pin and one end of the resistor R31 are connected, and the other end of the resistor R31 is grounded.
- an output pin of the boosting circuit module 82 is connected to the USB interface P2, and the boosting circuit module 82 is configured to boost a voltage of less than 5V to 5V.
- the base of the transistor Q7 is extremely low level signal, the field effect transistor Q6 and the transistor Q7 are turned off.
- the base of the transistor Q7 is extremely high level signal, the field effect transistor Q6 and the transistor Q7 are guided. Through, the external interface is charged through the USB interface P2.
- the voltage stabilizing circuit module 83 includes a voltage stabilizing circuit unit U9 and a diode D5.
- the anode of the diode D5 is connected to the power supply B+
- the cathode of the diode D5 is connected to the Vin pin of the voltage regulator circuit unit U9
- the Vout pin of the voltage regulator circuit unit U9 is connected to the power supply VDD.
- the voltage stabilizing circuit module 83 is used to regulate a power supply voltage greater than 3V to output a stable 3V VDD voltage.
- the circuit structure of the voltage stabilizing circuit unit U9 is the same as that of the voltage regulator chip of the model TLV70430 produced by Texas Instruments. Therefore, the circuit structure of the voltage stabilizing circuit unit U9 will not be described herein.
- the reset circuit module 84 includes a reset circuit unit U11 and a resistor R40.
- the vin pin of the reset circuit unit U11 is respectively connected to one end of the voltage VDD and the resistor R40, and the other end of the resistor R40 is respectively connected to the vout pin of the reset circuit unit U11 and the NRST pin of the control unit U10, and the vss of the reset circuit unit U11 The pin is grounded.
- the reset circuit module 84 is configured to output a low level when the voltage at VDD is less than 2.2V, so that the control unit U10 is reset to prevent the control unit U10 from being out of control.
- the reset circuit unit U11 has the same circuit structure as the reset circuit chip of the model NC/BL8506-22 produced by Shanghai Belling Co., Ltd., and therefore, the internal circuit structure thereof will not be described herein.
- the battery voltage detecting circuit module 85 includes a resistor R44, a resistor R45, and a capacitor C25. One end of the resistor R44 is connected to the positive pole of the power supply B+, the other end of the resistor R44 is connected to one end of the resistor R45, the other end of the resistor R45 is connected to the ground, and the capacitor C25 is connected in parallel with the resistor R45.
- the battery voltage detecting circuit module 85 is configured to control the power supply to supply power to the heating wire when the power supply voltage is less than 3.3V.
- the battery protection circuit module 86 includes a battery protection circuit unit U12, a resistor R52, a resistor R53, a capacitor C3 3, and a field effect transistor Q12.
- One end of the resistor R52 is connected to the positive pole B+ of the power source, and the other end of the resistor R52 is respectively connected with one end of the capacitor C33 and the VDD pin of the battery protection circuit unit U12, and the other end of the capacitor C33 is connected to the negative pole B- of the power source;
- one end of the resistor R53 is connected to the battery protection VM pin of circuit unit U12, correction page of resistor R53 (Rule 91) ISA/CN The other end is grounded; the drain of the FET Q12 is grounded, the source of the FET Q12 is connected to the negative terminal B- of the power supply, and the gate of the FET Q12 is connected to the DO pin of the chip U12.
- the battery protection circuit module 86 is used to protect the battery power.
- the circuit structure of the battery protection circuit unit U12 is the same as that of the battery protection chip of the model MM3280 manufactured by MITSUM I, and therefore, the circuit structure thereof will not be described herein.
- the button module includes a switch Sl, a switch S2, a switch S3, a switch S4, a resistor R47, a resistor R48, a resistor R49, and a resistor R50.
- One end of the switch SI is connected to one end of the resistor R47, the KEY pin of the control unit U10, the other end of the resistor R47 is connected to the voltage VDD, and the other end of the switch SI is grounded;
- one end of the switch S2 is respectively connected to one end of the resistor R48, and the control unit U10 is KEY+ pin, the other end of the resistor R48 is connected to the voltage VDD, and the other end of the switch S2 is grounded;
- one end of the switch S3 is connected to one end of the resistor R49, the KEY- pin of the control unit U10, and the other end of the resistor R48 is connected to the voltage VDD, the switch The other end of the switch S4 is grounded;
- one end of the switch S4 is connected to one end of the resistor R50, the KEY_0 pin of the control unit U10, the other end of the resistor R50 is connected to the voltage VDD, and the other end of the switch S4 is grounded.
- the display module includes a chip 0LED1, a transistor Q13, a field effect transistor Q10, and a transistor Q11.
- the drain of the FET Q10 is connected to the power supply B+, the source of the FET Q10 is connected to the VBAT pin of the chip OLED1, the gate of the OLED1 is connected to the collector of the transistor Q13 via the resistor R54, and the emitter of the transistor Q13 is grounded, the transistor Q13
- the base of the transistor is connected to the VDD pin of the chip OLED1 through a resistor R57; the base of the transistor Q11 is connected to the OLEDPW through a resistor R55, the emitter of the transistor Q11 is connected to VDD, and the collector of the transistor Q11 is connected to the VDD pin of the chip OLED1.
- the OLED1's SCL pin and S DA pin are used to write data.
- the base of the transistor Q11 inputs a low level signal, and the transistor Q13, the field effect transistor Q10 and the transistor Q11 are turned on to save power.
- the display module is used to display the drive power and the actual temperature of the heating wire.
- the control chip 22 includes a charge management circuit unit U1, a battery protection circuit unit U2, a control unit U3, a field effect transistor Q1, and a field effect transistor Q2.
- the electronic cigarette further includes a U SB interface P1, a switch K1 and a battery power display module, and an electric heating wire (not shown) of the electronic cigarette is connected between the connection end o+ and the connection end 0-.
- the battery power display module includes a smoking light LED5, a power correction page (Article 91) ISA/CN Indicator LED1, battery indicator LED2, battery indicator LED3 and battery indicator LED4.
- the VCC bow pin and the CE bow I pin of the charging management circuit unit U1 are respectively connected to the VCC pin 1 of the USB interface P1, and the BAT pin of the charging management circuit unit U1 is connected to the positive B+ of the power supply, and the PROG of the charging management circuit unit U1.
- the pin is electrically connected to the third sampling resistor R02. By setting the third sampling resistor R02, the required charging current can be set.
- the VM pin of the battery protection circuit unit U2 is grounded, and the VDD pin is connected to the positive B+ of the power supply through the resistor R2.
- the GND pin is connected to the negative pole of the power supply B-; the PB0/AN0 pin of the control unit U3 is connected to the drain of the FET Q1 through the resistor R6, the source of the FET Q1 is connected to the power supply B+, and the FET Q2 is connected through the resistor R4.
- the gate of the FET Q1 is connected to the OS pin of the control unit U3; the source of the FET Q2 is connected to the power supply B+, and the drain of the FET Q2 is connected to the PA5/A N4 of the control unit U3 via the resistor R7. Pin.
- one end of the switch K1 is connected to the PA2 pin of the control unit U3, and the other end of the switch K1 is grounded.
- the control unit U3 controls the opening and closing of the FET Q1 through the OS pin, thereby controlling the operation of the heating wire. More specifically, in the embodiment, when the switch K1 is triggered, the control unit U3 controls the opening and closing of the field effect transistor Q1, and controls the current flowing through the heating wire according to the magnitude of the resistance of the first sampling resistor R0. In order to detect the temperature when the heating wire is working, when the PB1/AN1 pin of the control unit U3 outputs a low level, the FET Q2 is turned on.
- the OS pin outputs a high level, and the FET Q1 is turned off, thereby detecting B+. And the voltage at 0+, the resistance value of the heating wire at this time is calculated by the detected voltage, and then the operating temperature of the heating wire is calculated, so that the temperature of the heating wire can be controlled.
- the control chip is the only chip of the electronic cigarette, that is, the electronic cigarette has only one chip.
- the circuit structure of the charging management circuit unit U1 is the same as that of the charging management chip of the model AP5056 produced by Wuxi Xinpeng Microelectronics Co., Ltd.; the circuit of the battery protection circuit unit U2 The circuit structure of the battery protection chip of the model XB5353A produced by Sai Ke Microelectronics Co., Ltd. is the same; the circuit structure of the control unit U3 and the circuit structure of the control chip of the model HT66F004 produced by Hetai Semiconductor (China) Co., Ltd. In another embodiment, as shown in FIG. 12, this embodiment is similar to the circuit structure of the electronic cigarette shown in FIG.
- control chip 22 which is different in the following embodiments: A transistor switch including a heating wire (not shown) and the control chip 22 is included, and the control chip passes the correction page (Article 91) ISA/CN Controlling the on and off of the transistor switch to control the current of the heating wire, specifically, in this embodiment
- the transistor switch is a FET Q1, and the heating wire is connected between the connection end o+ and the connection end 0-; but the FET Q1 is not required in the control chip of the embodiment, that is, the FET Q1 is placed Outside the control chip 22, it is not integrated with the control chip 22 on one chip. Therefore, the heat generated by the field effect tube Q1 can be better dissipated to avoid excessive temperature.
- the designed electronic cigarette can be used to control the working temperature of the heating wire, improve the yield of the product, and the product consistency is good, thereby improving the user experience.
- the chip design engineer since the main circuit of the electronic cigarette of the present invention is integrated on a control chip, the chip design engineer does not need to consider the material of the heating wire when designing the control chip, so that it can be compared with the prior art. Expanding the use range of the control chip; in addition, when the application engineer completes the design of the whole electronic cigarette circuit, it is only necessary to select different electric heating wires and first sampling resistors according to different materials and different target temperatures, Completing different design requirements without complicated connection, testing and adjustment, thus greatly simplifying the design of the electronic cigarette circuit, facilitating manufacture, high production efficiency and low production cost; Moreover, the electronic cigarette control method of the invention is improved Product yield, product consistency, and improved user experience.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Further, the present invention may take the form of a computer program product embodied in one or more of which comprises a computer usable storage medium having computer-usable program code (including but not limited to, disk storage, CD-R 0 M, optical memory, etc.).
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- Control Of Resistance Heating (AREA)
Abstract
Description
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3871528A4 (en) * | 2018-10-26 | 2022-06-29 | Japan Tobacco Inc. | Flavor generation system, power supply control method, program, and power supply unit |
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