Electronic atomization device and control method thereof

Abstract

The invention provides an electronic atomization device and a control method thereof, and the electronic atomization device comprises a heater which is used for heating a liquid substrate to generate aerosol; the battery core is used for providing electric power for the heater; a controller configured to provide power at a first power during a first period of time during a puff of suction of the electronic atomization device, and provide power at a second power different from the first power during a second period of time, and further configured to obtain a real-time voltage of the battery cell, and the duration of the first time period and / or the second time period is adjusted according to the change of the real-time voltage. According to the electronic atomization device and the control method thereof, the duration of the first time period and / or the second time period in the smoking period is adjusted according to the real-time voltage of the battery cell, the problem that the TPM before and after the battery cell is inconsistent due to the fact that the voltage of the battery cell is reduced can be avoided, and the smoking experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization, and in particular to an electronic atomization device and a control method thereof. Background Art

[0002] Electronic atomization devices heat atomized aerosols to form a matrix, such as e-liquid, to generate aerosols for users to inhale. The problem with existing electronic atomization devices is that as the voltage of the battery cell decreases, the power output to the heater also decreases, which in turn reduces the heat generated by the heater, resulting in a decrease in TPM (Total Particulate Matter), which affects the user's smoking experience. Summary of the invention

[0003] The embodiment of the present application provides an electronic atomization device and a control method thereof, aiming to solve the problem of inconsistency between front and rear TPMs due to a reduction in battery cell voltage in the existing electronic atomization device.

[0004] An embodiment of the present application provides an electronic atomization device, comprising:

[0005] a heater for heating the liquid matrix to generate an aerosol;

[0006] A battery cell, used to provide power to the heater;

[0007] The controller is configured to provide power at a first power in a first time period during a puff of the electronic atomization device, and to provide power at a second power different from the first power in a second time period, and is also configured to obtain the real-time voltage of the battery cell and adjust the duration of the first time period and / or the second time period according to the change of the real-time voltage.

[0008] In one example, the first power is greater than the second power.

[0009] In one example, the controller is configured to extend the duration of the first time period and / or reduce the duration of the second time period as the real-time voltage of the battery cell decreases.

[0010] In one example, the first time period starts at an initial moment during the one-puff period, and the second time period ends at an end moment during the one-puff period.

[0011] In one example, the first time period and the second time period are set at intervals.

[0012] In one example, there is a third time period between the first time period and the second time period;

[0013] The controller is configured to maintain a constant duration of the third time period during the puff.

[0014] In one example, the controller is configured to provide power at a third power during a third time period, the third power being less than the first power and greater than the second power.

[0015] In one example, the controller is configured to adjust the duration of the first time period and / or the second time period when the real-time voltage of the battery cell is less than a first preset voltage threshold.

[0016] In one example, the controller is configured to control the heating of the heater according to the duration of the first time period and the second time period corresponding to the second preset voltage threshold when the real-time voltage of the battery cell is less than the second preset voltage threshold.

[0017] In one example, the controller is configured to adjust the duration of the first time period and / or the second time period according to the real-time voltage currently obtained by the battery cell if the difference between the real-time voltages obtained twice before and after the battery cell is greater than or equal to a preset difference threshold.

[0018] In one example, a voltage detection circuit is further included, for detecting the real-time voltage of the battery cell; the voltage detection circuit includes a switch tube and a voltage dividing resistor connected in series;

[0019] Wherein, the switch tube can turn on or off the voltage detection circuit under the control signal of the controller.

[0020] In one example, the controller is further configured to increase a duty cycle of a corresponding switching signal in at least one time period based on a decrease in the real-time voltage of the battery cell.

[0021] Another aspect of the present application provides an electronic atomization device, comprising:

[0022] a heater for heating the liquid matrix to generate an aerosol;

[0023] A battery cell, used to provide power to the heater;

[0024] The controller is configured to intermittently provide power at a first duty cycle in a first time period during a puff of the electronic atomization device, and to intermittently provide power at a second duty cycle in a second time period, wherein the second duty cycle is smaller than the first duty cycle; and is also configured to obtain the real-time voltage of the battery cell, and adjust the duration of the first time period and / or the second time period according to changes in the real-time voltage.

[0025] Another aspect of the present application embodiment further provides a control method of an electronic atomization device, the electronic atomization device comprising:

[0026] a heater for heating the liquid matrix to generate an aerosol;

[0027] A battery cell, used to provide power to the heater;

[0028] The control method comprises:

[0029] The electronic atomization device provides power at a first power in a first time period during a puff of the electronic atomization device, and provides power at a second power different from the first power in a second time period, and is also configured to obtain the real-time voltage of the battery cell and adjust the duration of the first time period and / or the second time period according to the change of the real-time voltage.

[0030] The electronic atomization device and control method thereof provided in the present application adjust the duration of the first time period and / or the second time period during the puffing period according to the real-time voltage of the battery cell, thereby avoiding the problem of inconsistent TPM before and after due to the reduction of the battery cell voltage, and improving the user's puffing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0032] Figure 1 It is a structural schematic diagram of an electronic atomization device provided in an embodiment of the present application;

[0033] Figure 2 is a circuit diagram provided in an embodiment of the present application;

[0034] Figure 3 is another schematic diagram of a circuit provided in an embodiment of the present application;

[0035] Figure 4 is a schematic diagram of voltage and current changes of the LC resonant circuit provided in an embodiment of the present application;

[0036] Figure 5 is a schematic diagram of a temperature curve during a puff of the electronic atomization device provided in an embodiment of the present application;

[0037] Figure 6 is a schematic diagram of a duty cycle curve during the first puff of the electronic atomization device provided in an embodiment of the present application;

[0038] Figure 7Schematic diagram of a duty cycle curve during the Nth puff of the electronic atomization device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] The electronic atomization device includes an atomizer and a power supply assembly. In one example, the atomizer is removably connected to the power supply assembly, and the atomizer and the power supply assembly can be snap-connected, magnetically connected, etc. In one example, the atomizer and the power supply assembly are not removable, that is, they are formed in one piece, which is also feasible.

[0041] The atomizer includes a heater and a liquid storage chamber. The heater may include a resistive heating element capable of generating Joule heat when an electric current flows through it, or a sensor capable of induction heating under a variable magnetic field. The liquid storage chamber is used to store a liquid matrix that can be atomized; the heater is configured to heat the liquid matrix to generate an aerosol for inhalation.

[0042] The liquid matrix preferably comprises the material containing tobacco, and the material containing tobacco is included in the volatile tobacco flavor compounds that discharges from the liquid matrix when heating.Alternately or in addition, the liquid matrix can comprise non-tobacco material.The liquid matrix can comprise water, ethanol or other solvents, plant extract, nicotine solution and natural or artificial flavoring.Preferably, the liquid matrix further comprises an aerosol forming agent.The example of suitable aerosol forming agent is glycerine and propylene glycol.

[0043] The power supply assembly includes circuits and batteries.

[0044] The circuit can control the overall operation of the electronic atomization device. The circuit not only controls the operation of the battery cell and the heater, but also controls the operation of other components in the electronic atomization device.

[0045] The battery cell provides power for operating the electronic atomization device. The battery cell can be a rechargeable battery cell or a disposable battery cell.

[0046] Figure 1 It is a schematic diagram of an electronic atomization device provided in an embodiment of the present application.

[0047] like Figure 1 As shown, the atomizer 10 includes a susceptor 11, which is configured to be inductively coupled with the inductor 21, and generates heat when penetrated by a changing magnetic field, thereby heating a liquid matrix to generate an aerosol for inhalation.

[0048] Generally, the sensor 11 can be made of at least one of the following materials: aluminum, iron, nickel, copper, bronze, cobalt, ordinary carbon steel, stainless steel, ferritic stainless steel, martensitic stainless steel or austenitic stainless steel.

[0049] In an exemplary embodiment, the susceptor 11 may directly contact the liquid substrate, thereby evaporating the liquid substrate by releasing heat.

[0050] In an exemplary embodiment, the susceptor 11 may be kept in non-contact with the liquid substrate, and heats the liquid substrate by radiating heat.

[0051] In an exemplary embodiment, the atomizer 10 further includes a liquid transfer unit, and the receptor 11 indirectly contacts the liquid matrix through the liquid transfer unit. The liquid transfer unit can be, for example, cotton fiber, metal fiber, ceramic fiber, glass fiber, porous ceramic, etc., and can transfer the liquid matrix stored in the liquid storage chamber to the receptor 11 through capillary action.

[0052] In a specific example, the susceptor 11 is constructed in a closed loop or a non-closed loop tube shape. The susceptor 11 is made of a sheet of metal mesh wound around and supported on the inner surface of the liquid transfer unit.

[0053] In a specific example, the susceptor 11 may further include a radial portion radially extending from one end of the tube, and the radial portion may be fitted with the end of the liquid transfer unit.

[0054] In a specific example, the susceptor 11 is embedded in the liquid transfer unit and is co-fired with the liquid transfer unit to form an atomization core. In this way, the liquid matrix does not need to be atomized when it contacts the surface of the susceptor 11, but begins to atomize when it is heated near the susceptor 11; on the one hand, dry burning will not occur when there is heat conduction contact between the susceptor 11 and the liquid transfer unit, and on the other hand, most of the liquid matrix does not directly contact the susceptor 11 during atomization, which can avoid metal contamination generated by the susceptor 11.

[0055] In an exemplary embodiment, the susceptor 11 may include a plurality of spaced closed rings, each of which includes the same or different metal materials, for example, the Curie temperatures of the materials of different closed rings are different.

[0056] In an exemplary embodiment, the susceptor 11 may be a plate-shaped structure. The susceptor 11 of the plate-shaped structure may have a plurality of meshes.

[0057] In an exemplary embodiment, the weight of the receptor 11 is between 10 mg and 30 mg. Preferably, it is between 10 mg and 25 mg; more preferably, it is between 10 mg and 23 mg; more preferably, it is between 15 mg and 23 mg; more preferably, it is between 18 mg and 23 mg. In a specific example, the weight of the receptor 11 can be 20 mg, 21 mg, etc.

[0058] The power supply assembly 20 includes an inductor 21 , a circuit 22 and a battery cell 23 .

[0059] The inductor 21 is configured to generate a changing magnetic field under an alternating current. In one example, the inductor 21 includes an induction coil wound around a central longitudinal axis of the susceptor 11 .

[0060] The circuit 22 can control the overall operation of the electronic atomization device 100. The circuit 22 not only controls the operation of the battery cell 23 and the sensor 21, but also controls the operation of other components in the electronic atomization device 100.

[0061] In one example, the frequency of the alternating current supplied by the circuit 22 to the inductor 21 is between 500KHz and 3MHz; preferably, the frequency may be between 500KHz and 2.5MHz; further preferably, the frequency may be between 500KHz and 2MHz; further preferably, the frequency may be between 500KHz and 1.5MHz; further preferably, the frequency may be between 500KHz and 1MHz. For example, the frequency of the alternating current supplied by the circuit 22 to the inductor 21 is 500KHZ, or 600KHZ, or 800KHZ, or 1.2MHZ.

[0062] The battery cell 23 provides power for operating the electronic atomization device 100. The battery cell 23 may be a rechargeable battery cell or a disposable battery cell.

[0063] Figure 2 and Figure 3 A schematic diagram showing the basic components of one embodiment of a circuit 22; the circuit 22 comprises:

[0064] The structure and basic components of the circuit 20 in a preferred embodiment can be seen in Figures 2 to 3 As shown, including:

[0065] The inverter 221 includes a switch circuit 221a and a resonant circuit 221b. The switch circuit 221a includes a switch tube Q1; the resonant circuit 221b is formed by connecting a capacitor C1 and an inductor L (ie, the inductor 21) in parallel, thereby forming an LC parallel resonant circuit.

[0066] The switch tube Q1 is turned on or off under the drive of the pulse signal to guide the current between the battery cell 23 and the resonant circuit 221b to make the resonant circuit 221b resonate, forming an alternating current flowing through the inductor L, so that the inductor L generates a changing magnetic field and induces the sensor 11 to heat up. Figure 2-Figure 3 In the example, the switch tube Q1 is a common MOS tube, and the MOS tube is turned on or off according to the PWM pulse signal received by the G pole. In a preferred implementation, the frequency of the PWM pulse signal is between 500KHz and 2.5MHz.

[0067] The on or off of the switch circuit 221a is controlled by a PWM pulse signal generated by a driver 223, which includes a driver chip U1 and its peripheral circuits. Of course, the driver 223 is generated based on the PWM pulse control signal issued by the controller 222. In other embodiments, the PWM pulse signal can also be generated by a driver integrated in the controller 222.

[0068] In a preferred implementation, the on time and off time of the switch tube Q1 are different, that is, the duty cycle of the PWM pulse signal is not 50%, and the resonance process of the resonant circuit 221b is asymmetric, so that the resonant circuit 221b maintains a sufficient resonant voltage to maintain the strength of the magnetic field. Figure 4 It is shown in Figure 3 The resonant circuit 221b of the circuit 20 shown in the figure is driven in a symmetrical resonant mode with a duty cycle of 50%, and the change process of the resonant current / voltage in a period of time t11 to t15 includes:

[0069] S1, t11~t12 time period: the driver 223 turns on the MOS tube by sending a PWM pulse signal to the G pole of the switch tube Q1. After the conduction, the current i1 flows from the positive pole of the battery cell 23 through the inductor L. Since the coil inductance does not allow the current to change suddenly, the inductor L is charged during the time t11~t12 to form a linearly rising current i1.

[0070] S2, time period t12~t13: At time t12, the PWM pulse ends and the switch tube Q1 is disconnected. Also due to the inductive reactance of the inductor L, the current cannot become 0 immediately, but charges the capacitor C1, generating a current i2 that charges the capacitor C1.

[0071] Until time t13, capacitor C1 is fully charged and the current becomes 0; at this time, the magnetic field energy of the inductor L is completely converted into the electric field energy of the capacitor C1, and the peak voltage is reached at both ends of the capacitor C1. The voltage formed between the D pole / S pole of the switch tube Q1 is actually the sum of the reverse phase pulse peak voltage and the positive output voltage of the battery cell 23.

[0072] S3, t13~t14 time period: capacitor C1 discharges through inductor L until it is completed, i3 reaches the maximum value, the voltage across capacitor C1 gradually decreases until it disappears, and at this time the electric energy in capacitor C1 is completely converted into magnetic energy in inductor L. Similarly, due to the inductive reactance, the current flowing through inductor L changes gradually and is opposite to the above S1 and S2; capacitor C1 discharges until the electromotive force across inductor L is reversed.

[0073] S4, time period t14-t15: At time t14, the switch tube Q1 is turned on again, and the inductor L and the filter capacitor C3 form a reflux. The energy of the inductor L rebounds to the filter capacitor C3 to form a gradually decreasing current i4 until it decreases to 0 at time t15, and the cycle ends; then the next resonance cycle begins.

[0074] From the description of the above process, it can be known that at time t14, the voltage between the D pole and the S pole of the switch tube Q1 will pass through the zero point, and during the resonance process, the switch tube Q1 switches the on / off state at the moment when the voltage between the D pole and the S pole passes through zero.

[0075] further Figure 3 and Figure 4 In the embodiment, the synchronous detection unit 224 is used to detect the resonant voltage of the resonant circuit 221b; specifically, according to Figure 4 As shown, the synchronous detection unit 224 mainly includes a zero-crossing comparator U2, which is used to sample and detect the zero-crossing point of the D-pole voltage signal of the switch tube Q1, so that the controller 222 controls the on / off switching of the switch tube Q1 according to the zero-crossing moment.

[0076] Figure 2 The embodiment further proposes to detect the real-time voltage of the battery cell 23 so as to control the voltage detection circuit 225 of the switch tube Q1. The voltage detection circuit 225 includes the switch tube Q2, the voltage dividing resistor R1 and the voltage dividing resistor R2. The switch tube Q2 can turn on or off the voltage detection circuit 225 under the control signal of the controller 222.

[0077] Figure 5 It is a schematic diagram of the temperature curve during a puff of the electronic atomization device provided in an embodiment of the present application.

[0078] The electronic atomization device can respond to a single puff or a puff from the user, thereby activating the heater to heat the liquid matrix during a puff to continuously generate an aerosol. For example, an airflow sensor is provided in the electronic atomization device, through which the airflow sensor senses the air pressure change in the airflow channel, and then generates an electrical signal to control the output power of the battery cell of the electronic atomization device to activate the heater heating. As a suitable example, the duration of a puff period is between 2s and 3s (seconds).

[0079] In some embodiments, during a puff of the electronic atomization device, multiple time periods may be included according to the temperature change of the heater. Figure 5 Taking the temperature curve shown in FIG. 1 as an example, a puff period of the electronic atomization device includes four time periods, namely, time period t0-t1, time period t1-t2, time period t2-t3, and time period t3-t4.

[0080] In the time period t0-t1, the heater is controlled to perform heating at the first parameter value. In the time period t0-t1, the temperature of the heater rises rapidly from the initial temperature T0 to the maximum temperature T1, for example, 250° C. Generally, the duration of the time period t0-t1 is within 1 second, for example, 0.2 seconds, 0.4 seconds, 0.6 seconds, etc., so as to quickly respond to the user's puffing.

[0081] During the time period t1-t2, the heater is controlled to perform heating at a second parameter value, which is smaller than the first parameter value. During the time period t1-t2, the temperature of the heater drops from temperature T1 to temperature T2.

[0082] During the time period t2-t3, the heater is controlled to perform heating at a third parameter value, which is less than the second parameter value. During the time period t2-t3, the temperature of the heater drops from temperature T2 to temperature T3.

[0083] During the time period t3-t4, the heater is controlled to perform heating at a fourth parameter value, which is less than the third parameter value. During the time period t3-t4, the temperature of the heater drops from temperature T3 to temperature T4.

[0084] In this way, by gradually reducing the working parameter value of the heater, it is possible to avoid the temperature in the second half of a puff being too high, thereby making the taste of the aerosol during the previous and subsequent puffs consistent, thereby improving the user's puffing experience.

[0085] In the four time periods described in the above situation, time t0 is the initial time of the one-puff period, and time t4 is the end time of the one-puff period.

[0086] It should be noted that the operating parameters of the heater can be power, voltage, etc. Taking power as an example, in the time period t0-t1, the heater is controlled to perform heating at the first power; in the time period t1-t2, the heater is controlled to perform heating at the second power; in the time period t2-t3, the heater is controlled to perform heating at the third power; in the time period t3-t4, the heater is controlled to perform heating at the fourth power, the first power> the second power> the third power> the fourth power. In actual work, the power of the heater can be adjusted by adjusting the duty cycle of the PWM pulse signal. For example, in the time period t0-t1, the PWM pulse signal is controlled to be a pulse signal with the maximum duty cycle, that is, 100%; in the subsequent time periods, the duty cycle of the PWM pulse signal can be gradually reduced. It can be understood that the power of the heater can also be adjusted by other means, such as frequency modulation.

[0087] It should be noted that the puff period of the electronic atomization device may not be limited to the four time periods described in the above situation, and the duration of the four time periods described in the above situation may also be a partial duration of the puff period.

[0088] Based on the real-time voltage of the battery cell, the controller in the circuit adjusts the duration of at least one time period during a puff of the electronic atomization device according to the real-time voltage of the battery cell.

[0089] If the detected real-time voltage of the battery cell decreases, the duration of a certain time period during the puff can be extended; if the detected real-time voltage of the battery cell increases, the duration of a certain time period during the puff can be reduced.

[0090] As an example, if the detected real-time voltage of the battery cell decreases, the duration of the time period t0-t1 and the time period t3-t4 is adjusted accordingly. Specifically, the duration of the time period t0-t1 can be increased and the duration of the time period t3-t4 can be reduced. The duration of the time period t1-t2 and the time period t2-t3, which are set between the time period t0-t1 and the time period t3-t4, can remain unchanged, or increase or decrease accordingly. In this way, when the real-time voltage of the battery cell decreases, the energy consumption and TPM during different puffs before and after can be made basically consistent, thereby improving the user's puffing experience.

[0091] In a further implementation, if the real-time voltage of the battery cell is within a preset voltage interval, the heating of the heater may be controlled according to the duration of each time period corresponding to the preset voltage interval.

[0092] Specifically, when the voltage value of the real-time voltage of the battery cell is in a first preset voltage interval, the heating of the heater is controlled according to the duration of each time period corresponding to the first preset voltage interval. When the voltage value of the real-time voltage of the battery cell is in a second preset voltage interval different from the first preset voltage interval, the heating of the heater is controlled according to the duration of each time period corresponding to the second preset voltage interval.

[0093] In a further implementation, the controller is configured to adjust a duty cycle of the switching signal corresponding to the at least one time period.

[0094] Specifically, not only the duration of a certain time period during a puff can be adjusted, but also the duty cycle of the switch signal corresponding to the time period can be adjusted. For example, if the detected real-time voltage of the battery cell decreases, not only the duration of a certain time period during a puff can be extended, but also the duty cycle of the switch signal corresponding to the time period can be increased; if the detected real-time voltage of the battery cell increases, not only the duration of a certain time period during a puff can be reduced, but also the duty cycle of the switch signal corresponding to the time period can be reduced.

[0095] It is understandable that, according to the real-time voltage of the battery cell, the duration of at least one time period during a puff can be adjusted individually, or the duty cycle of the switch signal corresponding to the at least one time period can be adjusted individually.

[0096] In a preferred implementation, the controller is configured to adjust the duration of the at least one time period according to the real-time voltage of the battery cell when the real-time voltage of the battery cell is less than a first preset voltage threshold.

[0097] In this implementation, based on the real-time voltage of the battery cell, it is determined whether the real-time voltage of the battery cell is less than a first preset voltage threshold. When the real-time voltage of the battery cell is less than the first preset voltage threshold, the duration of at least one time period during the puff is adjusted according to the real-time voltage of the battery cell.

[0098] In a further implementation, the controller is further configured to, when the real-time voltage of the battery cell is greater than or equal to a first preset voltage threshold, then there is no need to adjust the duration of at least one time period during the puff. Generally, the first preset voltage threshold is slightly less than the maximum voltage or full-charge voltage of the battery cell. Taking 4.2V as an example, the first preset voltage threshold can be set to 4.1V.

[0099] In a preferred implementation, the controller is configured to control the heating of the heater according to the duration of each time period corresponding to the second preset voltage threshold when the real-time voltage of the battery cell is less than the second preset voltage threshold.

[0100] In this implementation, based on the real-time voltage of the battery cell, it is determined whether the real-time voltage of the battery cell is less than the second preset voltage threshold. If the real-time voltage of the battery cell is less than the second preset voltage threshold, the heating of the heater is controlled according to the duration of each time period corresponding to the second preset voltage threshold. Generally, the second preset voltage threshold is between 3V and 3.6V; or between 3.1V and 3.6V; or between 3.2V and 3.6V; or between 3.3V and 3.6V; or between 3.3V and 3.5V. Preferably, the second preset voltage threshold is set to 3.4V.

[0101] In a preferred implementation, the controller is configured to adjust the duration of the at least one time period according to the real-time voltage currently obtained by the battery cell if the difference between the real-time voltages obtained twice before and after the battery cell is greater than or equal to a preset difference threshold.

[0102] In this implementation, based on the real-time voltage of the battery cell, it is first determined whether the difference between the real-time voltages of the battery cell obtained twice before and after is greater than or equal to the preset difference threshold, and if the difference between the real-time voltages of the battery cell obtained twice before and after is greater than or equal to the preset difference threshold, the duration of the at least one time period is adjusted according to the real-time voltage currently obtained by the battery cell. Preferably, the preset difference threshold is set to 0.1V.

[0103] Another embodiment of the present application provides a control method for an electronic atomization device, the method comprising: during a puff of the electronic atomization device, adjusting the duration of at least one time period during the puff according to the real-time voltage of the battery cell.

[0104] Among them, the electronic atomization device can refer to the aforementioned content, and the implementation method can refer to the content of the aforementioned controller, which will not be repeated here.

[0105] The following combination Figure 1 , Figure 6-Figure 7 , further explain the control process of the electronic atomization device:

[0106] Figure 6 1 is a schematic diagram of a duty cycle curve of the first puff of the sensor 11 provided in an embodiment of the present application, wherein the horizontal axis t represents time and the vertical axis D represents the duty cycle. The cell voltage corresponding to the first puff is set to V1, assuming that 4.1V≤V1≤4.2V. During the first puff:

[0107] During the time period t0-t1, the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a first duty cycle D1. Figure 5 As shown, during the time period t0-t1, the temperature of the susceptor 11 rises rapidly from the initial temperature T0 to the maximum temperature T1. Generally, the first duty cycle D1 is 100%.

[0108] During the time period t1 to t2, the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a second duty cycle D2, where D2 is less than D1. Figure 5 As shown, during the time period t1-t2, the temperature of the susceptor 11 drops from temperature T1 to temperature T2.

[0109] During the time period t2 to t3, the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a third duty cycle D3, where D3 is less than D2. Figure 5As shown, during the time period t2 to t3, the temperature of the sensor 11 drops from the temperature T2 to the temperature T3.

[0110] During the time period t3 to t4, the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a fourth duty ratio D4, and D4 is less than D3. Refer to Figure 5 As shown, during the time period t3 to t4, the temperature of the sensor 11 drops from the temperature T3 to the temperature T4.

[0111] Figure 7 It is a schematic diagram of the duty ratio curve during the Nth puff of the sensor provided by the embodiment of the present application. The cell voltage corresponding to the Nth puff is set to V2, V2 < V1, and it is assumed that 3.7V ≤ V2 < 3.8V. During the Nth puff:

[0112] During the time period t0 to t1', the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a first duty ratio D1'. Refer to Figure 5 As shown, the temperature of the sensor 11 rapidly rises from the initial temperature T0 to the maximum temperature T1. Generally, the first duty ratio D1 is 100%. Compared with Figure 6 the time period t0 to t1 shown, the first duty ratio D1' is the same as the first duty ratio D1, but the duration of the time period t0 to t1' is longer than the duration of the time period t0 to t1.

[0113] During the time period t1' to t2', the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a second duty ratio D2', and D2' is less than D1. Refer to Figure 5 As shown, the temperature of the sensor 11 drops from the temperature T1 to the temperature T2. Compared with Figure 6 the time period t1 to t2 shown, the second duty ratio D2' is greater than the second duty ratio D2, but the duration of the time period t1' to t2' is the same as the duration of the time period t1 to t2.

[0114] During the time period t2' to t3', the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a third duty ratio D3', and D3' is less than D2'. Refer to Figure 5 As shown, the temperature of the sensor 11 drops from the temperature T2 to the temperature T3. Compared with Figure 6 the time period t2 to t3 shown, the third duty ratio D3' is greater than the third duty ratio D3, but the duration of the time period t2' to t3' is the same as the duration of the time period t2 to t3.

[0115] During the time period t3' to t4', the electronic atomization device 100 is controlled to perform heating operation with a PWM pulse signal of a fourth duty ratio D4', and D4' is less than D3'. Refer to Figure 5As shown in FIG. 1 , the temperature of the susceptor 11 drops from temperature T3 to temperature T4. Figure 6 Compared with the time period t3-t4 shown, the fourth duty cycle D4' is greater than the fourth duty cycle D4, but the duration of the time period t3'-t4' is less than the duration of the time period t3-t4.

[0116] It can be understood that in a specific implementation, a correlation table of the real-time voltage of the battery cell 23, the duration of each time period, and the duty cycle corresponding to each time period can be pre-established, for example, as shown in the following table.

[0117] Based on the real-time voltage of the battery cell 23 detected by the voltage detection circuit 225, the duration of each time period and the corresponding duty cycle can be determined by looking up a table, so that the controller 222 controls the electronic atomization device 100 to perform heating according to the determined duration of each time period and the corresponding duty cycle.

[0118]

[0119] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. An electronic atomization device, characterized in that: include: a heater for heating the liquid matrix to generate an aerosol; A battery cell, used to provide power to the heater; The controller is configured to provide power at a first power in a first time period during a puff of the electronic atomization device, and to provide power at a second power different from the first power in a second time period, and is also configured to obtain the real-time voltage of the battery cell and adjust the duration of the first time period and / or the second time period according to the change of the real-time voltage.

2. The electronic atomization device according to claim 1, characterized in that: The first power is greater than the second power.

3. The electronic atomization device according to claim 1, characterized in that: The controller is configured to extend the duration of the first time period and / or reduce the duration of the second time period as the real-time voltage of the battery cell decreases.

4. The electronic atomization device according to claim 1, characterized in that: The first time period starts at an initial moment of the puff period, and the second time period ends at an end moment of the puff period.

5. The electronic atomization device according to claim 4, characterized in that: The first time period and the second time period are set at intervals.

6. The electronic atomization device according to claim 5, characterized in that: There is a third time period between the first time period and the second time period; The controller is configured to maintain a constant duration of the third time period during the puff.

7. The electronic atomization device according to claim 6, characterized in that: The controller is configured to provide electric power at a third power for a third time period, the third power being less than the first power and greater than the second power.

8. The electronic atomization device according to claim 1, characterized in that: The controller is configured to adjust the duration of the first time period and / or the second time period when the real-time voltage of the battery cell is less than a first preset voltage threshold.

9. The electronic atomization device according to claim 8, characterized in that: The controller is configured to control the heating of the heater according to the duration of the first time period and the second time period corresponding to the second preset voltage threshold when the real-time voltage of the battery cell is less than the second preset voltage threshold.

10. The electronic atomization device according to claim 1, characterized in that: The controller is configured to adjust the duration of the first time period and / or the second time period according to the real-time voltage currently obtained by the battery cell if the difference between the real-time voltages obtained twice before and after the battery cell is greater than or equal to a preset difference threshold.

11. The electronic atomization device according to claim 1, characterized in that: It also includes a voltage detection circuit for detecting the real-time voltage of the battery cell; the voltage detection circuit includes a switch tube and a voltage dividing resistor connected in series; Wherein, the switch tube can turn on or off the voltage detection circuit under the control signal of the controller.

12. The electronic atomization device according to claim 1, characterized in that: The controller is further configured to increase a duty cycle of a corresponding switch signal in at least one time period based on a decrease in the real-time voltage of the battery cell.

13. An electronic atomization device, characterized in that: include: a heater for heating the liquid matrix to generate an aerosol; A battery cell, used to provide power to the heater; a controller configured to intermittently provide power at a first duty cycle during a first time period during a puff of the electronic atomization device, and to intermittently provide power at a second duty cycle during a second time period, the second duty cycle being less than the first duty cycle; The system is also configured to obtain the real-time voltage of the battery cell and adjust the duration of the first time period and / or the second time period according to changes in the real-time voltage.

14. A control method for an electronic atomization device, the electronic atomization device comprising: a heater for heating the liquid matrix to generate an aerosol; A battery cell, used to provide power to the heater; Characterized in that the control method comprises: The electronic atomization device provides power at a first power in a first time period during a puff of the electronic atomization device, and provides power at a second power different from the first power in a second time period, and is also configured to obtain the real-time voltage of the battery cell and adjust the duration of the first time period and / or the second time period according to the change of the real-time voltage.

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