WO2015196354A1 - 电子烟及其控制方法 - Google Patents

电子烟及其控制方法 Download PDF

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Publication number
WO2015196354A1
WO2015196354A1 PCT/CN2014/080597 CN2014080597W WO2015196354A1 WO 2015196354 A1 WO2015196354 A1 WO 2015196354A1 CN 2014080597 W CN2014080597 W CN 2014080597W WO 2015196354 A1 WO2015196354 A1 WO 2015196354A1
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WO
WIPO (PCT)
Prior art keywords
temperature
heating wire
time
voltage
electronic cigarette
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Application number
PCT/CN2014/080597
Other languages
English (en)
French (fr)
Inventor
刘平昆
Original Assignee
深圳麦克韦尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳麦克韦尔股份有限公司 filed Critical 深圳麦克韦尔股份有限公司
Priority to CN201480076255.4A priority Critical patent/CN106028857B/zh
Priority to PCT/CN2014/080597 priority patent/WO2015196354A1/zh
Priority to US15/127,943 priority patent/US9949511B2/en
Publication of WO2015196354A1 publication Critical patent/WO2015196354A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • 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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0244—Heating of fluids
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material

Definitions

  • the invention relates to an electronic product, in particular to an electronic cigarette and a control method thereof.
  • the electronic cigarette is an electronic device that is powered by a battery and is detected by the internal detection module to detect whether the airflow is in a smoking state, and operates on the heating wire to vaporize the smoke oil to achieve a smoking effect.
  • a common electronic cigarette uses a lithium battery with a supply voltage between 4.15 and 4.25V as a power source, and the output voltage of the power supply is controlled by the control chip to generate heat from the heating wire.
  • the electronic cigarette generally adopts two control modes: the first one is to output a constant voltage within a certain range, and the voltage value can be 3.6V ⁇ 0.15V or 3.4V ⁇ 0.15V, when the lithium battery voltage drops to 3.3V or 2.75V.
  • the control chip controls the power supply to stop the output voltage
  • the second is to output a voltage consistent with the voltage of the lithium battery, that is, the working voltage at both ends of the heating wire is consistent with the voltage of the lithium battery, and as the voltage of the lithium battery drops, the voltage output from the power supply is also It will drop.
  • the control chip controls the power supply to stop the output voltage.
  • the voltage applied across the heating wire is a constant voltage or can only change with the voltage of the lithium battery
  • the longer the smoking time the higher the temperature of the heating wire.
  • the temperature of the heating wire exceeds the vaporization temperature of the smoking oil, The smoke oil is cracked to produce a burnt smell.
  • the output voltage is constant or consistent with the lithium battery voltage, the temperature of the heating wire changes greatly, resulting in inconsistent taste of the smoked oil after atomization.
  • An electronic cigarette comprising:
  • the heating wire assembly for generating heat, the heating wire assembly comprising a heating wire whose resistance changes with temperature;
  • a power source for supplying voltage to the heating wire assembly
  • the controller electrically connects the heating wire assembly and the power source for controlling the output voltage of the power source, and the controller includes a temperature detecting module for detecting the resistance value of the heating wire assembly to obtain the real-time temperature of the heating wire assembly, and the temperature detecting module is provided with a heating limit
  • the temperature and the lower limit temperature of the heat generation when the real-time temperature is less than or equal to the lower limit temperature of the heat generation, the controller controls the power source to output the first voltage.
  • the controller controls the power source to output the second voltage, and the second voltage is low.
  • the controller controls the power supply to maintain the current voltage.
  • the controller stores in advance the correspondence data of the real-time temperature of the heating wire assembly and the resistance value of the heating wire.
  • the change in the resistance of the heating wire is known by detecting the voltage applied across the heating wire and the current flowing through the heating wire.
  • the heating wire has a positive temperature coefficient, and its resistance increases as the temperature increases.
  • the electronic cigarette further includes a smoke oil storage member for storing the smoke oil, the upper limit temperature of the heat generation is lower than the upper limit temperature of the vaporization of the smoke oil, and the lower limit temperature of the heat generation is higher than the lower limit temperature of the vaporization of the smoke oil.
  • the electronic cigarette further includes a cigarette holder
  • the controller further includes a cigarette detecting module connected to the cigarette holder and a time detecting module electrically connected to the smoking detecting module, the smoking detecting module is configured to detect the smoking action, and the time detecting module is provided with the reference time
  • the control power is turned off when the duration is greater than the reference time.
  • the controller further includes a smoke oil remaining amount detecting module for detecting a heating time required for the heating wire assembly to start heating to a heat upper limit temperature, and the smoke oil remaining amount detecting module is provided with a standard time when the temperature is raised. When the time is less than the standard time, the control power is turned off.
  • the electronic cigarette further includes a display light connected to the controller, and the controller controls the display light to display a normal smoking state and a smoke exhausted state.
  • a method for controlling an electronic cigarette includes the following steps:
  • the voltage across the heating wire assembly maintains the current voltage value.
  • the method further comprises the steps of:
  • the electronic cigarette works normally
  • the electronic cigarette is turned off.
  • the electronic cigarette includes a temperature detecting module, and the controller controls the power output voltage according to the real-time temperature of the heating wire assembly to prevent the electronic cigarette from generating a burnt odor due to the excessive temperature of the heating wire assembly, and at the same time, the temperature of the heating wire assembly is stable within a certain range. Fluctuation ensures that the taste of each cigarette is consistent and saves power.
  • Figure 1 is a cross-sectional view of an embodiment of an electronic cigarette
  • FIG. 2 is a block diagram showing the structure of an electronic cigarette according to an embodiment
  • FIG. 3 is a comparison diagram of temperature changes of a heating wire assembly of an electronic cigarette of the present invention and a conventional heating wire assembly in a normal smoking state;
  • FIG. 4 is a comparison diagram of resistance values of a heating wire assembly of an electronic cigarette of the present invention and a conventional heating wire assembly as a function of temperature;
  • FIG. 5 is a flow chart of a method for controlling an electronic cigarette according to an embodiment.
  • FIG. 1 is a cross-sectional view of an electronic cigarette including an electric heating wire assembly 11, a smoke oil storage member 12, a power source 13, and a controller 14.
  • the heating wire assembly 11 is for generating heat, and includes a heating wire 110 whose resistance changes with temperature.
  • the material of the heating wire 110 includes a metal crucible (Ce), and the resistance value of the heating wire 110 increases with temperature. And increase.
  • the smoky oil storage member 12 is connected to the heating wire assembly 11 for storing the smoky oil.
  • the smoky oil has a vaporization lower limit temperature t1 and a vaporization upper limit temperature t2.
  • the vaporization lower limit temperature t1 is 190 ° C
  • the vaporization upper limit temperature t2 is 220 ° C.
  • the temperature of the heating wire assembly 11 exceeds the vaporization upper limit temperature t2
  • the mouthfeel of the smoke oil deteriorates, and if the temperature of the heating wire assembly 11 continues to rise, when the temperature reaches 290 ° C, the smoke oil will be cracked to produce a burnt smell.
  • the power source 13 supplies a voltage to the heating wire assembly 11 and is electrically connected to the controller 14.
  • the controller 14 controls the power source 13 to output a first voltage U1 and a second voltage U2, wherein the second voltage U2 is lower than the first voltage U1.
  • the first voltage U1 is applied across the heating wire assembly 11
  • the temperature of the heating wire assembly 11 will rise;
  • the second voltage U2 is applied across the heating wire assembly 11, the second voltage U2 is lower than the first voltage U1.
  • the second voltage U2 is sufficiently small that the heating wire assembly 11 can no longer heat up while continuing to supply heat to the oil.
  • the temperature of the heating wire assembly 11 may decrease under the second voltage U2.
  • the controller 14 is required to control The power source 13 again outputs the first voltage U1 to heat the heating wire assembly 11.
  • the control power source 13 outputs the first voltage U1 and the second voltage U2, respectively, so that the temperature of the heating wire assembly 11 can be controlled.
  • the controller 14 includes a control module 140 for controlling the output voltage of the power source 13. Corresponding relationship data between the real-time temperature of the heating wire assembly 11 and the resistance value of the heating wire 110 is previously stored in the controller module 140.
  • the controller 14 further includes a temperature detecting module 141 electrically connected to the heating wire assembly 11 for detecting the real-time temperature t0 of the heating wire assembly 11.
  • the temperature detecting module 141 is provided with a heat-generating lower limit temperature t3 and a heat-generating upper limit temperature t4.
  • the controller 14 controls the power source 13 to output the first voltage U1; when the real-time temperature t0 is greater than or equal to the heat-generating upper limit temperature t4, the controller 14 controls the power source 13 to output the second voltage U2; When the real-time temperature t0 is greater than the heat-generating lower limit temperature t3 and smaller than the heat-generating upper limit temperature t4, the controller 14 controls the power source 13 to maintain the output of the current voltage.
  • the temperature detecting module 141 increases.
  • the real-time temperature t0 of the heating wire assembly 11 can be judged by measuring the resistance value of the heating wire 110.
  • the change in the resistance value of the heating wire 110 is known by detecting the voltage applied across the heating wire 110 and the current flowing through the heating wire 110, and thus sensing the temperature of the heating wire assembly 11 by the change in the resistance value of the heating wire 110. Change is very simple.
  • the resistance value of the heating wire 110 linearly increases as the temperature increases, and the temperature detecting module 141 only needs to detect the resistance value of the heating wire 110, and can quickly determine the real-time temperature t0 of the heating wire assembly 11 to make the control module
  • the 140 is capable of reacting quickly, and the control power source 13 changes the output voltage.
  • the resistance value of the heating wire 110 increases as the temperature increases, and the increase is large, that is, after the temperature of the heating wire assembly 11 reaches the vaporization temperature of the smoke oil, the resistance value of the heating wire 110 is large, and the heat flows through the heat.
  • the current of the wire 110 is small, and this feature is advantageous for avoiding the temperature rise of the heating wire assembly 11 to be too fast and to ensure the temperature of the smoke oil is stable.
  • the resistance of the heating wire 110 is increased by 0.1 ohm to 0.8 ohm for each rise of the heating wire assembly 11 by 100 ° C. This increase can be adjusted by changing the formulation of the heating wire 110.
  • FIG. 3 is a comparison chart of temperature changes of the heating wire assembly 11 and the conventional heating wire assembly of the electronic cigarette of the present invention under normal smoking conditions, wherein the curve L1 represents the temperature change of the heating wire assembly 11 of the electronic cigarette of the present invention with time.
  • the curve of the curve L2 represents the change of the temperature of the conventional heating wire assembly with time;
  • FIG. 4 is a comparison chart of the resistance value of the heating wire 110 of the electronic cigarette and the conventional heating wire assembly according to the temperature, and the straight line L3 in the figure
  • the resistance curve of the heating wire 110 representing the electronic cigarette of the present invention changes with time
  • the curve L4 represents a variation curve of the resistance value of the conventional heating wire with time.
  • the resistance of the traditional heating wire does not change with temperature.
  • the temperature of the conventional heating wire continues to rise, and finally exceeds the upper limit temperature of the vaporization of the smoking oil, resulting in poor mouthfeel and even a problem of burnt smell.
  • the resistance value of the heating wire 110 of the electronic cigarette of the present invention linearly increases with an increase in temperature, and the temperature detecting module 141 is used to sense the temperature of the heating wire assembly 11, so that the temperature of the heating wire assembly 11 can be maintained at the lower vaporization temperature.
  • the fluctuation between t1 and the vaporization upper limit temperature t2 is stable.
  • the electronic cigarette further includes a cigarette holder 15, the controller 14 further includes a smoking detection module 142 connecting the mouthpiece 15 and a time detecting module 143 electrically connected to the smoking detecting module 142, and the smoking detecting module 142 is configured to detect the smoking action.
  • the time detecting module 143 is provided with a reference time T0 for detecting and comparing the duration T1 of a single pumping in the smoking action, and when the smoking detecting module 143 detects the smoking action and the duration T1 is less than or equal to the reference time T0, the control is performed.
  • the controller 14 determines that the user is smoking normally, and controls the power source 13 to output a voltage; when the duration T1 is greater than the reference time T0, it is not a normal smoking action, and the control power source 13 is turned off.
  • the duration T1 of the single suction in the smoking action is used to determine whether the user is smoking. When the duration is too long, the electronic cigarette is automatically turned off, which is conducive to saving power.
  • the controller 14 further includes a smoke oil remaining amount detecting module 144 electrically connected to the temperature detecting module 141 and the control module 140 for detecting the heating wire assembly 11 from heating to heating.
  • the smoke oil remaining amount detecting module 144 is provided with a standard time T3. When the temperature rising time T2 is less than the standard time T3, the controller 14 determines that the smoke oil has been used up, the control power source 13 is turned off, and the power source 13 stops outputting the voltage.
  • the temperature of the heating wire assembly 11 is rapidly increased, and the temperature of the heating wire assembly 11 is detected by the smoke oil remaining amount detecting module 144, and the power is turned off when the heating rate is too fast. It is good for protecting the circuit.
  • the electronic cigarette further includes a display light 16 coupled to the controller 14, and the controller 14 controls the display light 16 to display a normal smoking status and an exhausted oil status through the control module 140.
  • the controller 14 controls the output voltage of the power source 13 according to the temperature of the heating wire assembly 11, to prevent the electronic cigarette from generating a burnt smell due to the excessive temperature of the heating wire assembly 11, and at the same time, the temperature of the heating wire assembly 11 Stable fluctuations within a certain range ensure that the taste of each cigarette is consistent and saves the power of the power source 13.
  • the invention also provides a method of controlling an electronic cigarette.
  • FIG. 5 is a flow chart of a method for controlling an electronic cigarette according to an embodiment. The method includes the following steps:
  • the control method can effectively prevent the electronic cigarette from being burnt due to the excessive temperature of the heating wire assembly, and at the same time, the temperature of the heating wire assembly is stably fluctuated within a certain range, thereby ensuring The taste of each cigarette is consistent; by checking the heating time of the heating wire assembly, when the heating time is too short, the electronic cigarette can be turned off, and the circuit of the electronic cigarette can be protected; by checking the duration of the smoking action, when the duration is normal, the electronic cigarette works normally. When the duration is too long, the electronic cigarette is turned off, which saves the power of the power source.

Abstract

一种电子烟及其控制方法，该电子烟包括发热丝组件（11），用于产生热量，发热丝组件（11）包括阻值随温度变化的发热丝（110）；电源（13），用于向发热丝组件（11）提供电压；和控制器（14），电连接发热丝组件（11）及电源（13），用于控制电源（13）输出电压，控制器（14）包括温度检测模块（141），用于检测发热丝（110）的阻值以获取发热丝组件（11）的实时温度，温度检测模块（141）设有发热上限温度及发热下限温度，实时温度小于或等于发热下限温度时，控制器（14）控制电源（13）输出第一电压，实时温度大于或等于发热上限温度时，控制器（14）控制电源（13）输出第二电压，第二电压低于第一电压，实时温度大于发热下限温度而小于发热上限温度时，控制器（14）控制电源（13）维持输出当前电压。

Description

电子烟及其控制方法
【技术领域】
本发明涉及一种电子产品，特别是涉及一种电子烟及其控制方法。
【背景技术】
电子烟是一种靠电池供电，由内部检测模块检测气流的运动判断是否处于吸烟状态，并对发热丝进行操作，将烟油汽化，实现吸烟效果的电子设备。
常见的电子烟采用出货电压在4.15—4.25V之间的锂电池作为电源，通过控制芯片控制电源输出电压，使发热丝产生热量。这种电子烟一般采用两种控制方式：第一种是输出一定范围内的恒定电压，电压值可以为3.6V±0.15V或3.4V±0.15V，当锂电池电压下降到3.3V或2.75V时，控制芯片控制电源停止输出电压；第二种是输出与锂电池电压一致的电压，即发热丝两端的工作电压和锂电池的电压一致，随着锂电池的电压下降，电源输出的电压也会下降，当锂电池电压下降到3.3V或是2.75V时，控制芯片控制电源停止输出电压。
然而，由于加在发热丝两端的电压是恒定电压或只能随锂电池电压改变，抽烟时间越长，发热丝的温度就会越高，当发热丝温度超过烟油的汽化温度时，就会将烟油裂化，产生焦味。此外，由于消费者的肺活量或抽烟习惯不同，若输出电压是恒定的或者与锂电池电压一致，发热丝的温度变化较大，导致雾化后烟油口味不一致。
【发明内容】
基于此，有必要针对传统的电子烟容易因发热丝温度过高而产生焦味，且发热丝温度不稳定导致口味不一致的问题，提供一种能避免电子烟产生焦味，并保证每一口烟的口味一致，同时节省电量的电子烟及其控制方法。
一种电子烟，包括：
发热丝组件，用于产生热量，该发热丝组件包括阻值随温度变化的发热丝；
电源，用于向发热丝组件提供电压；以及
控制器，电连接发热丝组件及电源，用于控制电源输出电压，控制器包括温度检测模块，用于检测发热丝组件的阻值以获取发热丝组件的实时温度，温度检测模块设有发热上限温度及发热下限温度，当实时温度小于或等于发热下限温度时，控制器控制电源输出第一电压，当实时温度大于或等于发热上限温度时，控制器控制电源输出第二电压，第二电压低于第一电压，当实时温度大于发热下限温度而小于发热上限温度时，控制器控制电源维持输出当前的电压。
在其中一个实施例中，控制器中预先存储发热丝组件的实时温度与发热丝的阻值的对应关系数据。
在其中一个实施例中，所述发热丝的阻值的变化通过检测施加在发热丝两端的电压，以及流经发热丝的电流得知。
在其中一个实施例中，发热丝具有正温度系数，其阻值随着温度升高而增大。
在其中一个实施例中，电子烟还包括烟油存储件，烟油存储件用于存储烟油，发热上限温度低于烟油的汽化上限温度，发热下限温度高于烟油的汽化下限温度。
在其中一个实施例中，电子烟还包括烟嘴，控制器还包括连接烟嘴的吸烟检测模块以及电连接吸烟检测模块的时间检测模块，吸烟检测模块用于检测吸烟动作，时间检测模块设有基准时间，用于检测并比对吸烟动作中单次抽吸的持续时间，当持续时间大于基准时间时，控制电源关闭。
在其中一个实施例中，控制器还包括烟油余量检测模块，用于检测发热丝组件从开始加热到发热上限温度所需的升温时间，烟油余量检测模块设有标准时间，当升温时间小于标准时间时，控制电源关闭。
在其中一个实施例中，电子烟还包括连接控制器的显示灯，控制器控制显示灯显示正常吸烟状态和烟油用尽状态。
一种电子烟的控制方法，包括以下步骤：
设定发热下限温度及发热上限温度；
检测发热丝组件的实时温度，并将实时温度与发热上限温度及发热下限温度进行比对；
若实时温度低于或等于发热下限温度，则在发热丝组件两端施加第一电压；
若实时温度高于或等于发热上限温度，则在发热丝组件两端施加第二电压，第二电压低于第一电压；
若实时温度高于发热下限温度而低于发热上限温度，则发热丝组件两端的电压维持当前电压值不变。
在其中一个实施例中，该方法还包括以下步骤：
设定标准时间；
检测发热丝组件从开始加热到发热上限温度所需的升温时间，并将升温时间与标准时间进行比对；
若升温时间大于或等于标准时间，电子烟正常工作；
若升温时间小于标准时间，电子烟关闭。
上述电子烟包括温度检测模块，控制器根据发热丝组件的实时温度控制电源输出电压，避免电子烟因发热丝组件的温度过高而产生焦味，同时使发热丝组件的温度在一定范围内稳定波动，保证每一口烟的口味一致，并节省了电源的电量。
【附图说明】
图1 为一实施例电子烟的剖面图；
图2为一实施例电子烟的模块结构图；
图3为正常吸烟状态下，本发明电子烟的发热丝组件与传统发热丝组件的温度随时间变化的对比图；
图4为本发明电子烟的发热丝组件与传统发热丝组件的电阻值随温度变化的对比图；
图5为一实施例电子烟的控制方法的流程图。
【具体实施方式】
图1为一实施例电子烟的剖面图，该电子烟包括发热丝组件11、烟油存储件12、电源13、控制器14。
发热丝组件11用于产生热量，其包括阻值随温度变化的发热丝110，在本实施例中，发热丝110的材料包括金属铈（Ce），发热丝110的阻值随温度的升高而增大。
烟油存储件12与发热丝组件11相连，用于存储烟油，烟油具有汽化下限温度t1及汽化上限温度t2，在本实施例中，汽化下限温度t1为190℃，汽化上限温度t2为220℃。当发热丝组件11的温度在烟油的汽化下限温度t1和汽化上限温度t2之间时，烟油汽化后具有较好的口感，电子烟可以实现较好的吸烟效果。然而，当发热丝组件11的温度超过汽化上限温度t2时，烟油的口感变差，若发热丝组件11的温度继续升高，达到290℃时，烟油将被裂化，产生焦味。为了使电子烟不产生焦味并保持良好的口感，需要使发热丝组件11的温度在汽化下限温度t1和汽化上限温度t2之间保持稳定或小幅波动。
电源13为发热丝组件11提供电压，并与控制器14电连接。控制器14控制电源13输出第一电压U1和第二电压U2，其中第二电压U2低于第一电压U1。在发热丝组件11两端施加第一电压U1时，发热丝组件11的温度将会升高；在发热丝组件11两端施加第二电压U2时，由于第二电压U2低于第一电压U1，且该第二电压U2足够小，能使发热丝组件11在继续向烟油供热的情况下不再升温。随着吸烟口数的增加，在第二电压U2下，发热丝组件11的温度可能会下降，为避免发热丝组件11的温度降低至烟油的汽化下限温度t1以下，此时需要控制器14控制电源13再次输出第一电压U1，使发热丝组件11升温。如此，控制电源13分别输出第一电压U1和第二电压U2，就能控制发热丝组件11的温度。
图2为一实施例电子烟的结构框图，控制器14包括控制模块140，用于控制电源13输出电压。控制器模块140中预先存储发热丝组件11的实时温度与发热丝110的阻值的对应关系数据。控制器14还包括温度检测模块141，该温度检测模块141与发热丝组件11电连接，用于检测发热丝组件11的实时温度t0。温度检测模块141设有发热下限温度t3及发热上限温度t4，由于发热丝组件11的温度的变化在改变电压后仍会有一段滞后，实时温度t0将继续升高或降低，因此发热下限温度t3高于烟油的汽化下限温度t1，而发热上限温度t4低于烟油的汽化上限温度t2。当实时温度t0小于或等于发热下限温度t3时，控制器14控制电源13输出第一电压U1；当实时温度t0大于或等于发热上限温度t4时，控制器14控制电源13输出第二电压U2；当实时温度t0大于发热下限温度t3而小于发热上限温度t4时，控制器14控制电源13维持输出当前的电压。
由于控制器模块140中预先存储了发热丝组件11的实时温度t0与发热丝110的阻值的对应关系数据，且发热丝110的阻值随着温度升高而增大，故温度检测模块141通过测量发热丝110的阻值就能够判断发热丝组件11的实时温度t0。所述发热丝110的阻值的变化通过检测施加在发热丝110两端的电压，以及流经发热丝110的电流得知，因此通过发热丝110的阻值变化来感测发热丝组件11温度的变化，十分简便。优选的，发热丝110的阻值随着温度升高而线性地增大，温度检测模块141只需检测发热丝110的阻值，就能迅速判断发热丝组件11的实时温度t0，使控制模块140能够快速反应，控制电源13改变输出电压。此外，因为发热丝110的阻值随温度升高而增大，且升幅较大，即发热丝组件11的温度达到烟油的汽化温度后，发热丝110的阻值较大，而流经发热丝110的电流较小，这个特点有利于避免发热丝组件11的温度升高过快，保证烟油的温度稳定。在一个实施例中，发热丝组件11每升高100°C，发热丝110的阻值增加0.1欧姆—0.8欧姆，这个升高幅度可以通过改变发热丝110的配方来调整。
图3为正常吸烟状态下，本发明电子烟的发热丝组件11与传统发热丝组件的温度随时间变化的对比图，图中曲线L1代表本发明电子烟的发热丝组件11的温度随时间变化的变化曲线，曲线L2代表传统发热丝组件的温度随时间变化的变化曲线；图4为本发明电子烟的发热丝110与传统发热丝组件的电阻值随温度变化的对比图，图中直线L3代表本发明电子烟的发热丝110的电阻随时间变化的变化曲线，曲线L4代表传统发热丝的阻值随时间变化的变化曲线。传统发热丝的阻值不随温度变化，若电子烟没有温度检测模块，传统发热丝的温度持续升高，最终超过烟油的汽化上限温度，造成口感不良，甚至产生焦味的问题。本发明电子烟的发热丝110的阻值随着温度升高线性地增大，并利用温度检测模块141来感测发热丝组件11的温度，能够使发热丝组件11的温度维持在汽化下限温度t1和汽化上限温度t2之间稳定波动。
在一个实施例中，电子烟还包括烟嘴15，控制器14还包括连接烟嘴15的吸烟检测模块142以及电连接所述吸烟检测模块142的时间检测模块143，吸烟检测模块142用于检测吸烟动作。时间检测模块143设有基准时间T0，用于检测并比对吸烟动作中单次抽吸的持续时间T1，当吸烟检测模块143检测到吸烟动作且持续时间T1小于或等于基准时间T0时，控制器14判断用户正常吸烟，控制电源13输出电压;当持续时间T1大于基准时间T0时，不是正常吸烟动作，控制电源13关闭。本实施例利用吸烟动作中单次抽吸的持续时间T1判断用户是否在吸烟，当持续时间过长时，自动关闭电子烟，有利于节省电量。
在一个实施例中，控制器14还包括烟油余量检测模块144，该烟油余量检测模块144电连接温度检测模块141及控制模块140，用于检测发热丝组件11从开始加热到发热上限温度t4所需的升温时间T2。烟油余量检测模块144设有标准时间T3，当升温时间T2小于标准时间T3时，控制器14判断烟油已用尽，控制电源13关闭，电源13停止输出电压。由于烟油余量较少或已用尽时，发热丝组件11的温度会快速升高，采用烟油余量检测模块144检测发热丝组件11升温的速度，在升温速度过快时关闭电源13，有利于保护电路。
在一个实施例中，电子烟还包括连接控制器14的显示灯16，控制器14通过控制模块140控制显示灯16显示正常吸烟状态和烟油用尽状态。
由于电子烟包括温度检测模块141，控制器14根据发热丝组件11的温度控制电源13输出电压，避免电子烟因发热丝组件11的温度过高而产生焦味，同时使发热丝组件11的温度在一定范围内稳定波动，保证每一口烟的口味一致，并节省了电源13的电量。
本发明还提供一种控制电子烟的方法。
图5为一实施例电子烟的控制方法的流程图。该方法包括以下步骤：
S110，设定发热下限温度t30及发热上限温度t40。
S120，检测发热丝组件的实时温度t00，并将实时温度t00与发热下限温度t30及发热上限温度t40进行比对。
S130，若实时温度t00低于或等于发热下限温度t30，则在发热丝组件两端施加第一电压。
S140，若实时温度t00高于或等于发热上限温度t40，则在发热丝组件两端施加第二电压，该第二电压低于第一电压。
S150，若实时温度t00高于发热下限温度t30而低于发热上限温度t40，则发热丝组件两端的电压维持当前电压值不变。
在一个实施例中，检测发热丝组件的实时温度t00，并将实时温度t00与发热下限温度t30及发热上限温度t40进行比对前，还包括以下步骤：
S210，设定基准时间T00。
S220，检测吸烟动作及吸烟动作中单次抽吸的持续时间T10，并将持续时间T10与基准时间T00进行比对。
S230，若持续时间T10小于或等于基准时间T00，电子烟正常工作。
S240，若持续时间T10大于基准时间T00，电子烟关闭。
在一个实施例中，设定基准时间T00前，还包括以下步骤：
S310，设定标准时间T30。
S320，检测发热丝组件从开始加热到发热上限温度t40所需的升温时间T20，并将升温时间T20与标准时间T30进行比对。
S330，若升温时间T20大于或等于标准时间T30，电子烟正常工作。
S340，若升温时间T20小于标准时间T30，电子烟关闭。
这种控制方法通过检查发热丝组件的温度调整电源的输出电压，能有效避免电子烟因发热丝组件的温度过高而产生焦味，同时使发热丝组件的温度在一定范围内稳定波动，保证每一口烟的口味一致；通过检查发热丝组件的升温时间，当升温时间过短时关闭电子烟，能保护电子烟的电路；通过检查吸烟动作的持续时间，持续时间正常时，电子烟正常工作，而持续时间过长时，关闭电子烟，节省了电源的电量。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种电子烟，包括：
    发热丝组件，用于产生热量，所述发热丝组件包括阻值随温度变化的发热丝；
    电源，用于向所述发热丝组件提供电压；以及
    控制器，电连接所述发热丝组件及所述电源，用于控制所述电源输出电压，其特征在于，所述控制器包括温度检测模块，用于检测所述发热丝的电阻以获取所述发热丝组件的实时温度，所述温度检测模块设有发热上限温度及发热下限温度，当所述实时温度小于或等于所述发热下限温度时，所述控制器控制所述电源输出第一电压，当所述实时温度大于或等于所述发热上限温度时，所述控制器控制所述电源输出第二电压，所述第二电压低于所述第一电压，当所述实时温度大于所述发热下限温度而小于所述发热上限温度时，所述控制器控制所述电源维持输出当前的电压。
  2. 根据权利要求1所述的电子烟，其特征在于，所述控制器中预先存储所述发热丝组件的实时温度与所述发热丝的阻值的对应关系数据。
  3. 根据权利要求2所述的电子烟，其特征在于，所述发热丝的阻值的变化通过检测施加在发热丝两端的电压，以及流经发热丝的电流得知。
  4. 根据权利要求3所述的电子烟，其特征在于，所述发热丝具有正温度系数，其阻值随着温度升高而增大。
  5. 根据权利要求1所述的电子烟，其特征在于，所述电子烟还包括烟油存储件，所述烟油存储件用于存储烟油，所述发热上限温度低于所述烟油的汽化上限温度，所述发热下限温度高于所述烟油的汽化下限温度。
  6. 根据权利要求1所述的电子烟，其特征在于，所述电子烟还包括烟嘴，所述控制器还包括连接所述烟嘴的吸烟检测模块以及电连接所述吸烟检测模块的时间检测模块，所述吸烟检测模块用于检测吸烟动作，所述时间检测模块设有基准时间，用于检测并比对所述吸烟动作中单次抽吸的持续时间，当所述持续时间大于所述基准时间时，控制所述电源关闭。
  7. 根据权利要求1所述的电子烟，其特征在于，所述控制器还包括烟油余量检测模块，用于检测所述发热丝组件从开始加热到所述发热上限温度所需的升温时间，所述烟油余量检测模块设有标准时间，当所述升温时间小于所述标准时间时，控制所述电源关闭。
  8. 根据权利要求6所述的电子烟，其特征在于，所述电子烟还包括连接所述控制器的显示灯，所述控制器控制所述显示灯显示正常吸烟状态和烟油用尽状态。
  9. 一种电子烟的控制方法，包括以下步骤：
    设定发热下限温度及发热上限温度；
    检测发热丝组件的实时温度，并将所述实时温度与所述发热上限温度及发热下限温度进行比对；
    若所述实时温度低于或等于所述发热下限温度，则在所述发热丝组件两端施加第一电压；
    若所述实时温度高于或等于所述发热上限温度，则在所述发热丝组件两端施加第二电压，所述第二电压低于所述第一电压；
    若所述实时温度高于所述发热下限温度而低于所述发热上限温度，则所述发热丝组件两端的电压维持当前电压值不变。
  10. 根据权利要求8所述的电子烟的控制方法，其特征在于，所述方法还包括以下步骤：
    设定标准时间；
    检测所述发热丝组件从开始加热到所述发热上限温度所需的升温时间，并将所述升温时间与所述标准时间进行比对；
    若所述升温时间大于或等于所述标准时间，所述电子烟正常工作；
    若所述升温时间小于所述标准时间，所述电子烟关闭。
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