Battery pole, heating control method thereof and electronic atomization device

Abstract

The invention provides a battery rod, a heating control method thereof and an electronic atomization device, the battery rod comprises an energy storage unit, a boost unit, a switch unit and a control unit, the energy storage unit is used for outputting a first voltage; the boosting unit is connected with the energy storage unit and is used for boosting the first voltage output by the energy storage unit; the switch unit is connected with the boosting unit, and the switch unit is further used for being connected with the atomizing unit so as to control a path between the boosting unit and the atomizing unit to be conducted in a conducting state; the control unit is connected with the boosting unit and the switch unit, and the control unit controls the boosting unit to boost the first voltage to obtain a second voltage and controls the duty ratio of the switch unit in the atomization stage based on the target average heating power output to the atomization unit in the atomization stage, so that the atomization unit is controlled to work by using the second voltage, and the atomization efficiency is improved. The instant heating power of the atomization unit is improved, so that the liquid guiding capacity of the porous atomization unit is optimized, and the problem of dry burning of the atomization unit is avoided.

Description

Technical Field

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

[0002] An electronic atomization device generally consists of two parts: an atomizer and a battery rod. The atomizer generally includes an atomization unit for atomizing an aerosol-generating matrix, and the battery rod generally includes an energy storage unit and a control circuit for powering the atomizer and controlling the operation of the atomizer.

[0003] Among them, the atomization unit is the core component of the electronic atomization device, and its characteristics determine the atomization effect and user experience. The porous heating element is a widely used atomization unit. Taking the porous ceramic heating element as an example, it generally consists of a porous ceramic matrix and a metal heating film. The porous ceramic matrix provides liquid conduction and liquid storage functions, and the metal heating film realizes the heating and atomization of the liquid aerosol generation matrix. At present, under the conditions of pore size and porosity that meet the low leakage risk, the liquid conduction capacity of the porous ceramic matrix is ​​limited, which will lead to insufficient liquid supply to the matrix during the duration of the atomization stage, and then cause the problem of dry burning of the heating element, thereby affecting the user's smoking experience. Summary of the invention

[0004] The present application provides a battery rod and a heating control method thereof, and an electronic atomization device, which can solve the problems of limited liquid conduction capacity of the existing porous atomization unit, which easily leads to insufficient liquid supply and dry burning of the heating element.

[0005] To solve the above problems, a technical solution provided by the present application is: to provide a battery rod, comprising: an energy storage unit, used to output a first voltage; a boost unit, connected to the energy storage unit, used to boost the first voltage output by the energy storage unit; a switch unit, connected to the boost unit, and the switch unit is also used to connect to an atomization unit to control the conduction of the path between the boost unit and the atomization unit when in a conductive state; a control unit, connected to the boost unit and the switch unit, the control unit controls the boost unit to boost the first voltage to obtain a second voltage based on a target average heating power output to the atomization unit in an atomization stage, and controls the duty cycle of the switch unit in the atomization stage, so as to control the operation of the atomization unit using the second voltage to increase the instantaneous heating power to the atomization unit.

[0006] In one embodiment, the control unit determines a third voltage based on the resistance of the atomization unit, the target average heating power, and the maximum duty cycle of the switch unit in the atomization stage, and the third voltage is used to represent the minimum value of the second voltage; the control unit also determines a fourth voltage based on the maximum working power that the atomization unit can withstand and the resistance of the atomization unit, and the fourth voltage is used to represent the maximum value of the second voltage; wherein the second voltage is between the third voltage and the fourth voltage, and the maximum duty cycle is determined based on the target average heating power of the atomization unit and the liquid guide speed of the atomization unit under the target average heating power.

[0007] In one embodiment, the control unit determines the second voltage based on the resistance of the atomization unit, the target average heating power, and the target duty cycle of the switch unit during the atomization stage.

[0008] In one embodiment, the control unit also determines the minimum duty cycle of the switch unit in the atomization stage based on the target average heating power and the maximum operating power that the atomization unit can withstand; the target duty cycle is between the minimum duty cycle and the maximum duty cycle; wherein the maximum duty cycle is determined based on the target average heating power of the atomization unit and the liquid guide speed of the atomization unit under the target average heating power.

[0009] In one embodiment, in different atomization stages, the control unit controls the target duty cycle of the switch unit to vary within a range between the minimum duty cycle and the maximum duty cycle; or the control unit controls the target duty cycle of the switch unit to remain fixed.

[0010] In one embodiment, the battery rod further includes: a collection unit connected between the switch unit and the passage of the atomization unit and connected to the control unit, and the collection unit is used to obtain the resistance value of the atomization unit.

[0011] To solve the above problems, another technical solution provided by the present application is: providing a heating control method, comprising: based on the target average heating power output to the atomization unit in the atomization stage, controlling the boost unit to boost the first voltage output by the energy storage unit to obtain a second voltage, and controlling the duty cycle of the switch unit in the atomization stage; using the second voltage to control the operation of the atomization unit to increase the instantaneous heating power of the atomization unit.

[0012] In one embodiment, the control boost unit boosts the first voltage output by the energy storage unit to obtain a second voltage, including: determining a third voltage based on the resistance of the atomization unit, the target average heating power, and the maximum duty cycle of the switch unit in the atomization stage under a preset power, and the third voltage is used to represent the minimum value of the second voltage; determining a fourth voltage based on the maximum working power that the atomization unit can withstand and the resistance of the atomization unit, and the fourth voltage is used to represent the maximum value of the second voltage; wherein the second voltage is between the third voltage and the fourth voltage.

[0013] In one embodiment, the control boost unit boosts the first voltage output by the energy storage unit to obtain a second voltage, including: determining the second voltage based on the resistance of the atomization unit, the target average heating power, and the target duty cycle of the switch unit in the atomization stage; controlling the duty cycle of the switch unit in the atomization stage, including: determining the minimum duty cycle of the switch unit in the atomization stage based on the target average heating power and the maximum working power that the atomization unit can withstand; and determining the maximum duty cycle of the switch unit in the atomization stage under a preset power; wherein the target duty cycle is between the minimum duty cycle and the maximum duty cycle.

[0014] To solve the above problems, another technical solution provided by the present application is: to provide an electronic atomization device, comprising: an atomizer, including an atomization unit, the atomization unit is used to atomize an aerosol to generate a matrix; a battery rod, electrically connected to the atomizer, for outputting power to the atomization unit during the atomization stage; wherein the battery rod is any of the battery rods described above.

[0015] Different from the prior art, the beneficial effect of the present application is that in the battery rod and its heating control method and the electronic atomization device provided by the present application, the battery rod includes an energy storage unit, a boost unit, a switch unit and a control unit, wherein the control unit controls the boost unit to boost the first voltage output by the energy storage unit to obtain a second voltage based on the target average heating power output to the atomization unit in the atomization stage, and controls the duty cycle of the switch unit in the atomization stage, thereby using the second voltage to control the operation of the atomization unit, thereby using the second voltage to control the operation of the atomization unit to increase the instantaneous heating power of the atomization unit. Specifically, the battery rod provided by the present application optimizes the liquid conduction capacity of the porous atomization unit by increasing the heating voltage and ensuring a low duty cycle, under the premise of meeting the target average heating power output in the atomization stage, thereby avoiding the problem of dry burning of the atomization unit caused by insufficient liquid conduction capacity of the atomization unit in the atomization stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the electronic atomization device provided in this application;

[0018] Figure 2 A schematic structural diagram of another embodiment of the electronic atomization device provided in the present application;

[0019] Figure 3 A circuit diagram of an embodiment of the electronic atomization device provided by the present application;

[0020] Figure 4 for Figure 3 A heating waveform diagram of an embodiment of the electronic atomization device shown;

[0021] Figure 5 A circuit diagram of another embodiment of the electronic atomization device provided by the present application;

[0022] Figure 6 for Figure 5 A heating waveform diagram of an embodiment of the electronic atomization device shown;

[0023] Figure 7 A schematic flow chart of an embodiment of a heating control method provided in the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second" and "first" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In order to solve the problem of limited liquid conduction capacity of the existing porous atomization unit and reduce the generation of bad taste (burnt smell), the applicant found that the liquid supply of the porous atomization unit can be optimized by increasing the heating voltage and ensuring a low duty cycle (controlled within the target demand range, or even a fixed duty cycle).

[0028] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0029] See also Figure 1 , Figure 1 This is a schematic structural diagram of an embodiment of the electronic atomization device provided in the present application.

[0030] Specifically, an embodiment of the present application provides a battery rod 100 , which includes an energy storage unit 10 , a boost unit 20 , a switch unit 30 and a control unit 40 .

[0031] The energy storage unit 10 is used to output a first voltage U1; the boost unit 20 is connected to the energy storage unit 10, and is used to boost the first voltage U1 output by the energy storage unit 10; the switch unit 30 is connected to the boost unit 20, and the switch unit 30 is also used to connect the atomizing unit 210 in the atomizer 200 when the battery rod 100 is electrically connected to the atomizer 200, so as to control the conduction of the passage between the boost unit 20 and the atomizing unit 210 in the on state, thereby controlling the atomizing unit 210 to heat the atomized aerosol to generate the matrix. In the embodiment of the present application, the atomizer 200 is detachably connected to the battery rod 100, and the atomizing unit 210 in the atomizer 200 is a porous atomizing unit, such as a porous ceramic atomizing unit, a porous glass atomizing unit, etc., which is not limited here.

[0032] Among them, the control unit 40 is connected to the boost unit 20 and the switch unit 30. The control unit 40 controls the boost unit 20 to boost the first voltage U1 to obtain the second voltage U2 based on the target average heating power P output to the atomization unit 210 in the atomization stage, and controls the duty cycle of the switch unit 30 in the atomization stage, so as to control the operation of the atomization unit 210 using the second voltage U2 to increase the instantaneous heating power of the atomization unit 210.

[0033] Specifically, the battery rod 100 provided in the present application, under the premise of meeting the target average heating power P output in the atomization stage, optimizes the liquid conduction of the porous atomization unit 210 by increasing the heating voltage (second voltage U2) output to the atomization unit 210 to ensure a low duty cycle, thereby improving the liquid conduction capacity of the porous atomization unit 210.

[0034] It is understandable that increasing the heating voltage will increase the instantaneous power, which will make the boiling and evaporation of the matrix generated by the instantaneous atomized liquid aerosol more intense, and then make the capillary action in the porous matrix in the instantaneous atomization unit 210 more significant, thereby promoting the liquid supply of the heating element.

[0035] In addition, during the atomization stage, under the condition of the same average power output, increasing the heating voltage means reducing the heating time within the same time period and extending the non-heating time (that is, reducing the duty cycle. Under the same power supply, the non-heating time under high voltage (second voltage U2) is greater than the non-heating time under normal mode (first voltage U1), thereby extending the pure liquid supply time) to ensure sufficient liquid supply.

[0036] Based on the above characteristics, the present application increases the heating voltage, that is, increases the instantaneous power, optimizes the liquid conduction capacity of the porous atomization unit 210, and ensures a low duty cycle, thereby extending the non-heating time, thereby ensuring sufficient liquid supply, thereby avoiding the problem of dry burning of the atomization unit 210 caused by insufficient liquid conduction capacity of the atomization unit 210 during the atomization stage, thereby improving the user experience.

[0037] In one embodiment, the control unit 40 determines a third voltage U3 based on the resistance R of the atomization unit 210, the target average heating power P, and the maximum duty cycle Dmax of the switch unit 30 in the atomization stage, and the third voltage U3 is used to represent the minimum value of the second voltage U2; the control unit 40 also determines a fourth voltage U4 based on the maximum working power Pmax that the atomization unit 210 can withstand and the resistance R of the atomization unit 210, and the fourth voltage U4 is used to represent the maximum value of the second voltage U2; wherein the second voltage U2 is between the third voltage U3 and the fourth voltage U4.

[0038] Specifically, the control unit 40 calculates the third voltage U3 for representing the minimum value of the second voltage U2 according to formula (1) based on the acquired resistance R of the atomization unit 210, the target average heating power P, and the maximum duty cycle Dmax of the switch unit 30 in the atomization stage under the preset power:

[0039] U3 = sqrt(P*R / Dmax); (1)

[0040] Wherein, U3 is the third voltage, R is the resistance of the atomization unit 210, P is the target average heating power in the atomization stage, Dmax is the maximum duty cycle of the switch unit 30 in the atomization stage under the preset power, and sqrt is the square root function.

[0041] The maximum duty cycle Dmax is determined based on the target average heating power P of the atomization unit 210 and the liquid guiding speed of the atomization unit 210 under the target average heating power P. For example, for a certain porous atomization unit 210, experimental tests have found that the maximum working power Pmax that can be tolerated while ensuring the life of the atomization unit 210 is guaranteed; and through experiments, it has been found that when the duty cycle of the atomization stage is set to <= Dmax, the liquid guiding speed can be fully guaranteed.

[0042] Specifically, the maximum duty cycle Dmax is the maximum duty cycle of the atomization unit 210 that can ensure liquid supply under a certain target average power P. For example, the adaptation power of a certain atomization unit 210 is 7.5W. When the power is set to 8W (8W is less than or equal to the maximum working power Pmax that the atomization unit 210 can tolerate), the test finds that when the duty cycle is set <=60%, the liquid supply atomization can reach a balance, and when it is greater than 60%, it is relatively easy to cause the temperature to continue to rise and form a dry burn because the liquid supply speed cannot supply the atomization speed. At this time, it is considered that Dmax under 8W is 60%; and if the target power is 6.5W, the duty cycle can keep up with the liquid supply speed even if it reaches 100%. At this time, it can be considered that Dmax under 6W is 100%. If the program setting is compatible with the power setting of the target power 8w and below, it can be considered that Dmax is 60%.

[0043] The control unit 40 also calculates the fourth voltage U4 for representing the maximum value of the second voltage U2 according to formula (2) based on the maximum working power Pmax that the atomization unit 210 can withstand and the resistance R of the atomization unit 210:

[0044] U4 = sqrt(Pmax*R); (2)

[0045] Wherein, U4 is the fourth voltage, R is the resistance of the atomization unit 210 , Pmax is the maximum operating power that the atomization unit 210 can withstand, and sqrt is a square root function.

[0046] Specifically, the fourth voltage U4 represents the voltage corresponding to the maximum working power Pmax that the atomizing unit 210 can withstand; the third voltage U3 represents the minimum voltage that provides the target average power P, that is, the case where the duty cycle is 100%. In this way, the control unit 40 can control the boost unit 20 to boost the first voltage U1 output by the energy storage unit 10 based on the third voltage U3 and the fourth voltage U4 to obtain the second voltage U2, and the second voltage U2 is between the third voltage U3 and the fourth voltage U4, so as to output the second voltage U2 to the atomizing unit 210 to increase the instantaneous power of the atomizing unit 210 and optimize the liquid conducting capacity of the atomizing unit 210.

[0047] In another embodiment, the control unit 40 determines the second voltage U2 based on the resistance R of the atomization unit 210 , the target average heating power P, and the target duty cycle D of the switch unit 30 during the atomization stage.

[0048] Specifically, in this embodiment, by determining a target duty cycle D of a fixed switch unit 30, the control unit 40 calculates the second voltage U2 according to formula (3) based on the resistance R of the atomization unit 210, the target average heating power P, and the target duty cycle D of the switch unit 30 during the atomization stage:

[0049] U2 = sqrt(P*R / D); (3)

[0050] Wherein, U2 is the second voltage, R is the resistance of the atomization unit 210, P is the target average heating power in the atomization stage, and D is the target duty cycle of the switch unit 30 in the atomization stage.

[0051] In one embodiment, the target duty cycle D is obtained as follows:

[0052] The control unit 40 determines the minimum duty cycle Dmin of the switch unit 30 in the atomization stage based on the target average heating power P and the maximum operating power Pmax that the atomization unit 210 can withstand; the target duty cycle D is between the minimum duty cycle Dmin and the maximum duty cycle Dmax; wherein the maximum duty cycle Dmax is the maximum duty cycle Dmax of the switch unit 30 in the atomization stage under the preset power.

[0053] The method for obtaining the maximum duty cycle Dmax can be found in the above description and will not be elaborated here.

[0054] The control unit 40 calculates the minimum duty cycle Dmin for representing the minimum value of the target duty cycle D according to formula (4) based on the target average heating power P and the maximum working power Pmax that the atomization unit 210 can withstand:

[0055] Dmin= P / Pmax; (4)

[0056] Wherein, Dmin is the minimum duty cycle of the switch unit 30 in the atomization stage, P is the target average heating power in the atomization stage, and Pmax is the maximum working power that the atomization unit 210 can withstand.

[0057] In this way, the control unit 40 can determine the target duty cycle D of the switch unit 30 in the atomization stage based on the minimum duty cycle Dmin and the maximum duty cycle Dmax. The target duty cycle D can ensure sufficient liquid supply in the atomization stage. The second voltage U2 can increase the instantaneous power and optimize the liquid conduction capacity of the atomization unit 210.

[0058] In one embodiment, for different atomization stages, the control unit 40 controls the target duty cycle D of the switch unit 30 to change within a range between the minimum duty cycle Dmin and the maximum duty cycle Dmax, that is, the control unit 40 can control the target duty cycle of the switch unit 30 to be different in different atomization stages, thereby adjusting the liquid-conducting capacity of the atomization unit 210 in different atomization stages. For example, when replacing a new atomizer or refilling the liquid, the content of the liquid aerosol-generating matrix in the atomizer is relatively large, which can ensure the liquid supply to the atomization unit 210. The control unit 40 can control the target duty cycle D of the switch unit 30 to be larger, and the corresponding instantaneous power is small, and the second voltage is small, thereby reducing energy consumption. For another example, when the content of the liquid aerosol-generating matrix in the atomizer is consumed and gradually decreases, the control unit 40 can control the target duty cycle D of the switch unit 30 to gradually decrease, increase the instantaneous power, and extend the non-heating time, thereby ensuring sufficient liquid supply.

[0059] In another embodiment, for different atomization stages, the control unit 40 may also control the target duty cycle D of the switch unit 30 to remain fixed, so as to ensure that the aerosol flavor generated in each atomization stage is consistent, thereby improving the user experience.

[0060] See also Figure 2 , Figure 2 This is a structural schematic diagram of another embodiment of the electronic atomization device provided in the present application. In one embodiment, the battery rod 100 also includes a collection unit 50, which is connected between the switch unit 30 and the passage of the atomization unit 210, and is connected to the control unit 40. The collection unit 50 is used to obtain the resistance R of the atomization unit 210 and send it to the control unit 40, so that the control unit 40 calculates the second voltage U2.

[0061] Please combine Figure 2 and Figure 3 In one embodiment, the acquisition unit 50 includes a sampling resistor Rx and a first control switch Q1; the first end of the sampling resistor Rx is connected to the output end of the switch unit 30 and the first acquisition port ADC1 of the control unit 40, and the second end of the sampling resistor Rx is connected to the first channel end of the first control switch Q1; the second channel end of the first control switch Q1 is connected to the second acquisition port ADC2 of the control unit 40, and the second acquisition port ADC2 is also connected to the output end of the boost unit 20, and the control end of the first control switch Q1 is connected to the control unit 40, and is used to be turned on or off under the control of the control unit 40.

[0062] The control unit 40 determines the resistance R of the atomization unit 210 based on the resistance of the sampling resistor Rx, the first sampling voltage U5 sampled on the first sampling port ADC1, and the second sampling voltage U6 sampled on the second sampling port ADC2.

[0063] Specifically, the control unit 40 turns off the switch unit 30, turns on the first control switch Q1, and reads the first acquisition voltage U5 and the second acquisition voltage U6 through the first acquisition port ADC1 and the second acquisition port ADC2 respectively; and the sampling resistor Rx in the circuit is a reference resistor with a known resistance value, so the resistance value R of the atomization unit 210 can be obtained by using formula (5):

[0064] R = U5*R1 / (U6-U5); (5)

[0065] Wherein, R is the resistance of the atomization unit 210, R1 is the resistance of the sampling resistor Rx, U5 is the first sampling voltage; and U6 is the second sampling voltage.

[0066] In one embodiment, the circuit further includes a second control switch Q2, which is connected between the negative electrode of the atomization unit 210 and the ground terminal to protect the circuit. When detecting the resistance R of the atomization unit 210, the control unit 40 turns off the switch unit 30, turns on the first control switch Q1 and the second control switch Q2, and reads the first acquisition voltage U5 and the second acquisition voltage U6 through the first acquisition port ADC1 and the second acquisition port ADC2, respectively.

[0067] See also Figure 4 , Figure 4 for Figure 3 The heating waveform diagram of an embodiment of the electronic atomization device shown in FIG. Figure 4 Multiple atomization stages are shown (t1 cycle, t2 cycle, ..., tn cycle), and each atomization stage has the same duration, that is, t1=t2=tn (n>=1 is an integer), the target duty cycle D=t1A / t1=t2A / t2=tnA / tn, that is, t1A=t2A=tnA (the heating duration in each atomization stage is the same), the tnB stage is the resistance measurement stage, the tnB stage can be placed before or after tnA, and the second voltage U2 output by the boost circuit is dynamically adjusted according to the resistance R of the atomization unit 210 obtained in the tnB stage to ensure that the duty cycle of each atomization stage is constant.

[0068] See also Figure 5 , Figure 5 This is a circuit diagram of another embodiment of the electronic atomization device provided in the present application. In another embodiment, the acquisition unit 50 includes a current acquisition module, which is used to acquire the working current I output by the switch unit 30 and transmit it to the control unit 40; the control unit 40 determines the resistance R of the atomization unit 210 based on the received working current I and the second voltage U2.

[0069] Specifically, the control unit 40 calculates the resistance R of the atomization unit 210 using formula (6) based on the received working current I and the second voltage U2:

[0070] R=U2 / I; (6)

[0071] Wherein, R is the resistance value of the atomization unit 210, U2 is the second voltage, and I is the working current detected by the current acquisition module.

[0072] And combined Figure 5 and Figure 6 , Figure 6 for Figure 5The heating waveform diagram of an embodiment of the electronic atomization device shown in the figure, compared with the circuit structure of the collection unit 50 provided in the previous embodiment, the collection unit 50 of this embodiment includes a current collection module, which can measure the working current I during the heating process, without setting a special collection stage, that is, there is no need for a tnB stage.

[0073] Specifically, the battery rod 100 provided in the embodiment of the present application, under the premise of meeting the target average heating power P output in the atomization stage, increases the heating voltage (second voltage U2) output to the atomization unit 210, that is, increases the instantaneous power, optimizes the liquid conduction capacity of the porous atomization unit 210, and ensures a low duty cycle, thereby extending the non-heating time, thereby ensuring sufficient liquid supply, thereby avoiding the problem of dry burning of the atomization unit 210 caused by insufficient liquid conduction capacity of the atomization unit 210 during the atomization stage, thereby improving the user experience.

[0074] See also Figure 7 , Figure 7 This is a flow chart of an embodiment of a heating control method provided by the present application. The present application also provides a heating control method, including:

[0075] Step S1: Based on the target average heating power P output to the atomization unit during the atomization stage, control the boost unit to boost the first voltage U1 output by the energy storage unit to obtain the second voltage U2, and control the duty cycle of the switch unit during the atomization stage.

[0076] Step S2: using the second voltage U2 to control the atomization unit to work, so as to increase the instantaneous heating power of the atomization unit.

[0077] Specifically, the heating control method provided in the present application, under the premise of meeting the target average heating power P output in the atomization stage, optimizes the liquid conduction of the porous atomization unit by increasing the heating voltage (second voltage U2) output to the atomization unit to ensure a low duty cycle, thereby improving the liquid conduction capacity of the porous atomization unit.

[0078] It is understandable that increasing the heating voltage will increase the instantaneous power, which will make the boiling and evaporation of the matrix generated by the instantaneous atomized liquid aerosol more intense, and then make the capillary action in the porous matrix in the instantaneous atomization unit more significant, thereby promoting the liquid supply of the heating element.

[0079] In addition, during the atomization stage, under the condition of the same average power output, increasing the heating voltage means reducing the heating time within the same time period and extending the non-heating time (that is, reducing the duty cycle. Under the same power supply, the non-heating time under high voltage (second voltage U2) is greater than the non-heating time under normal mode (first voltage U1), thereby extending the pure liquid supply time) to ensure sufficient liquid supply.

[0080] Based on the above characteristics, the present application increases the heating voltage, that is, increases the instantaneous power, optimizes the liquid conduction capacity of the porous atomization unit, and ensures a low duty cycle, thereby extending the non-heating time, thereby ensuring sufficient liquid supply, thereby avoiding the problem of dry burning of the atomization unit caused by insufficient liquid conduction capacity of the atomization unit during the atomization stage, thereby improving the user experience.

[0081] In one embodiment, controlling the boost unit to boost the first voltage U1 output by the energy storage unit to obtain the second voltage U2 includes:

[0082] Based on the resistance R of the atomization unit, the target average heating power P, and the maximum duty cycle Dmax of the switch unit in the atomization stage, a third voltage U3 is determined, and the third voltage U3 is used to characterize the minimum value of the second voltage U2; and based on the maximum working power Pmax that the atomization unit can withstand and the resistance R of the atomization unit, a fourth voltage U4 is determined, and the fourth voltage U4 is used to characterize the maximum value of the second voltage U2; wherein the second voltage U2 is between the third voltage U3 and the fourth voltage U4.

[0083] Specifically, the control unit calculates the third voltage U3 for representing the minimum value of the second voltage U2 according to formula (1) based on the acquired resistance R of the atomization unit, the target average heating power P, and the maximum duty cycle Dmax of the switch unit in the atomization stage under the preset power:

[0084] U3 = sqrt(P*R / Dmax); (1)

[0085] Among them, U3 is the third voltage, R is the resistance of the atomization unit, P is the target average heating power in the atomization stage, Dmax is the maximum duty cycle of the switch unit in the atomization stage under the preset power, and sqrt is the square root function.

[0086] The maximum duty cycle Dmax is determined based on the target average heating power of the atomization unit and the liquid guiding speed of the atomization unit under the target average heating power.

[0087] The control unit also calculates the fourth voltage U4 used to represent the maximum value of the second voltage U2 according to formula (2) based on the maximum working power Pmax that the atomization unit can withstand and the resistance R of the atomization unit:

[0088] U4 = sqrt(Pmax*R); (2)

[0089] Wherein, U4 is the fourth voltage, R is the resistance of the atomization unit, Pmax is the maximum working power that the atomization unit can withstand, and sqrt is the square root function.

[0090] Specifically, the fourth voltage U4 represents the voltage corresponding to the maximum working power Pmax that the atomization unit can withstand, and the third voltage U3 represents the minimum voltage that provides the target average power P, that is, the case where the duty cycle is 100%. In this way, the control unit can control the boost unit to boost the first voltage U1 output by the energy storage unit based on the third voltage U3 and the fourth voltage U4 to obtain the second voltage U2. The second voltage U2 is between the third voltage U3 and the fourth voltage U4, so as to output the second voltage U2 to the atomization unit to increase the instantaneous power, optimize the liquid conduction of the atomization unit, and improve the liquid conduction capacity of the atomization unit.

[0091] In another embodiment, controlling the boost unit to boost the first voltage U1 output by the energy storage unit to obtain the second voltage U2 includes:

[0092] The second voltage U2 is determined based on the resistance R of the atomization unit, the target average heating power P, and the target duty cycle D of the switch unit during the atomization phase.

[0093] Specifically, in this embodiment, by determining a target duty cycle D of a fixed switch unit, the control unit calculates the second voltage U2 according to formula (3) based on the resistance R of the atomization unit, the target average heating power P, and the target duty cycle D of the switch unit in the atomization stage:

[0094] U2 = sqrt(P*R / D); (3)

[0095] Among them, U2 is the second voltage, R is the resistance of the atomization unit, P is the target average heating power in the atomization stage, and D is the target duty cycle of the switch unit in the atomization stage.

[0096] In this embodiment, the duty cycle of the switch unit in the atomization stage is controlled, including:

[0097] Based on the target average heating power P and the maximum working power Pmax that the atomization unit can withstand, the minimum duty cycle Dmin of the switch unit in the atomization stage is determined; and the maximum duty cycle Dmax of the switch unit in the atomization stage under the preset power is determined; wherein the target duty cycle D is between the minimum duty cycle Dmin and the maximum duty cycle Dmax.

[0098] Among them, the maximum duty cycle Dmax is determined according to the characteristics of the atomization unit. For example, for a certain porous atomization unit, experimental tests have found that the maximum tolerable working power Pmax is Pmax while ensuring the life of the atomization unit; and through experiments, it is found that when the duty cycle of the atomization stage is set to <= Dmax, the liquid guide speed can be fully guaranteed.

[0099] The control unit calculates the minimum duty cycle Dmin, which is used to characterize the minimum value of the target duty cycle D, based on the target average heating power P and the maximum working power Pmax that the atomization unit can withstand according to formula (4):

[0100] Dmin= P / Pmax; (4)

[0101] Among them, Dmin is the minimum duty cycle of the switch unit in the atomization stage, P is the target average heating power in the atomization stage, and Pmax is the maximum working power that the atomization unit can withstand.

[0102] In this way, the control unit can determine the target duty cycle D of the switching unit in the atomization stage based on the minimum duty cycle Dmin and the maximum duty cycle Dmax. The target duty cycle D can ensure sufficient liquid supply in the atomization stage. The second voltage U2 can increase the instantaneous power, optimize the liquid conduction of the atomization unit, and improve the liquid conduction capacity of the atomization unit.

[0103] In one embodiment, for different atomization stages, the control unit controls the target duty cycle D of the switch unit to vary within a range between a minimum duty cycle Dmin and a maximum duty cycle Dmax, that is, the control unit can control the target duty cycle of the switch unit to be different in different atomization stages, thereby adjusting the liquid conduction capacity of the atomization unit in different atomization stages.

[0104] In another embodiment, for different atomization stages, the control unit may also control the target duty cycle D of the switch unit to remain fixed, so as to ensure that the aerosol flavor generated in each atomization stage is consistent, thereby improving the user experience.

[0105] Specifically, the heating control method provided in the embodiment of the present application, under the premise of meeting the target average heating power P output in the atomization stage, increases the heating voltage (second voltage U2) output to the atomization unit, that is, increases the instantaneous power, optimizes the liquid conduction capacity of the porous atomization unit, and ensures a low duty cycle, thereby extending the non-heating time, thereby ensuring sufficient liquid supply, thereby avoiding the problem of dry burning of the atomization unit caused by insufficient liquid conduction capacity of the atomization unit in the atomization stage, thereby improving the user experience.

[0106] See also Figure 1 or Figure 2 The present application also provides an electronic atomization device 300 , including a detachably connected atomizer 200 and a battery rod 100 .

[0107] The atomizer 200 includes an atomizing unit 210, which may be a porous atomizing unit 210, such as a porous ceramic atomizing unit 210, a porous glass atomizing unit 210, etc., which are not limited here. The atomizing unit 210 is used to atomize the aerosol to generate the substrate.

[0108] The battery rod 100 is electrically connected to the atomizer 200 and is used to output power to the atomization unit 210 during the atomization stage; the battery rod 100 is any of the battery rods 100 described above.

[0109] Specifically, the battery rod 100 includes an energy storage unit 10 , a boost unit 20 , a switch unit 30 and a control unit 40 .

[0110] The energy storage unit 10 stores electrical energy for supplying power to the atomizer 200 and other devices in the battery rod 100 . The energy storage unit 10 includes a battery or a battery cell.

[0111] The boost unit 20 is used to boost the voltage output by the energy storage unit 10. The boost unit 20 may be an existing boost device or boost circuit, which will not be described in detail herein. In the present application, the boost unit 20 includes a boost chip, and the control unit 40 outputs a pulse width modulation signal so that the boost chip boosts the voltage output by the energy storage unit 10.

[0112] The switch unit 30 is used to open or close the path between the boost unit 20 and the atomization unit 210 . The switch unit 30 includes switching devices such as transistors, MOS tubes, and relays, which are not limited here.

[0113] Among them, the control unit 40 includes one or more processing cores and memory. The control unit 40 uses various interfaces and lines to connect the various parts of the entire electronic atomization device, and executes various functions and processes data of the electronic atomization device by running or executing instructions, programs, code sets or instruction sets stored in the memory, and calling data stored in the memory. Optionally, the control unit can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA).

[0114] Specifically, in the electronic atomization device 300 provided in the present application, the battery rod 100 can increase the heating voltage output to the atomizer 200, that is, the instantaneous power of the atomization unit 210 is increased, the liquid conduction capacity of the porous atomization unit 210 is optimized, and a low duty cycle is ensured, thereby extending the non-heating time of the atomization unit 210, thereby ensuring sufficient liquid supply, thereby avoiding the problem of dry burning of the atomization unit 210 caused by insufficient liquid conduction capacity of the atomization unit 210 during the atomization stage, thereby improving the user experience.

[0115] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A battery rod, It is characterized in that include: An energy storage unit, configured to output a first voltage; a boost unit, connected to the energy storage unit, and configured to boost the first voltage output by the energy storage unit; A switch unit connected to the boost unit and further used to connect to the atomization unit, so as to control the conduction of the passage between the boost unit and the atomization unit in the on state; A control unit is connected to the boost unit and the switch unit. The control unit controls the boost unit to boost the first voltage to obtain a second voltage based on a target average heating power output to the atomization unit during an atomization stage, and controls the duty cycle of the switch unit during an atomization stage, thereby controlling the atomization unit to operate using the second voltage to increase the instantaneous heating power to the atomization unit.

2. The battery rod according to claim 1, It is characterized in that The control unit determines a third voltage based on the resistance of the atomization unit, the target average heating power, and the maximum duty cycle of the switch unit in the atomization stage, wherein the third voltage is used to represent the minimum value of the second voltage; The control unit further determines a fourth voltage based on the maximum working power that the atomization unit can withstand and the resistance value of the atomization unit, wherein the fourth voltage is used to represent the maximum value of the second voltage; The second voltage is between the third voltage and the fourth voltage, and the maximum duty cycle is determined based on a target average heating power of the atomization unit and a liquid guiding speed of the atomization unit under the target average heating power.

3. The battery rod according to claim 1, It is characterized in that The control unit determines the second voltage based on the resistance of the atomization unit, the target average heating power, and the target duty cycle of the switch unit during an atomization phase.

4. The battery rod according to claim 3, It is characterized in that The control unit also determines the minimum duty cycle of the switch unit in the atomization stage based on the target average heating power and the maximum operating power that the atomization unit can withstand; The target duty cycle is between the minimum duty cycle and the maximum duty cycle; wherein the maximum duty cycle is determined based on a target average heating power of the atomization unit and a liquid guiding speed of the atomization unit under the target average heating power.

5. The battery rod according to claim 4, It is characterized in that In different atomization stages, the control unit controls the target duty cycle of the switch unit to vary within a range between the minimum duty cycle and the maximum duty cycle; or the control unit controls the target duty cycle of the switch unit to remain fixed.

6. The battery rod according to any one of claims 1 to 5, It is characterized in that The battery rod also includes: A collection unit is connected between the switch unit and the passage of the atomization unit and is connected to the control unit. The collection unit is used to obtain the resistance value of the atomization unit.

7. A heating control method, It is characterized in that include: Based on the target average heating power output to the atomization unit in the atomization stage, controlling the boost unit to boost the first voltage output by the energy storage unit to obtain a second voltage, and controlling the duty cycle of the switch unit in the atomization stage; The second voltage is used to control the operation of the atomization unit to increase the instantaneous heating power of the atomization unit.

8. The heating control method according to claim 7, It is characterized in that The controlling boost unit boosts the first voltage output by the energy storage unit to obtain a second voltage, including: Determine a third voltage based on the resistance of the atomization unit, the target average heating power, and the maximum duty cycle of the switch unit in the atomization stage under the preset power, wherein the third voltage is used to represent the minimum value of the second voltage; Based on the maximum working power that the atomization unit can withstand and the resistance value of the atomization unit, a fourth voltage is determined, where the fourth voltage is used to represent the maximum value of the second voltage; The second voltage is between the third voltage and the fourth voltage.

9. The heating control method according to claim 7, It is characterized in that The controlling boost unit boosts the first voltage output by the energy storage unit to obtain a second voltage, including: determining the second voltage based on the resistance of the atomization unit, the target average heating power, and the target duty cycle of the switch unit during the atomization phase; The duty cycle of the control switch unit in the atomization stage includes: Based on the target average heating power and the maximum operating power that the atomization unit can withstand, determining the minimum duty cycle of the switch unit in the atomization stage; and determining the maximum duty cycle of the switch unit in the atomization stage under a preset power; The target duty cycle is between the minimum duty cycle and the maximum duty cycle.

10. An electronic atomization device, It is characterized in that include: A nebulizer, comprising a nebulizing unit, the nebulizing unit being used to nebulize an aerosol-generating substrate; A battery rod is electrically connected to the atomizer and is used to output power to the atomization unit during the atomization stage; wherein the battery rod is the battery rod according to any one of claims 1 to 6.

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