Heating control circuit, heating control method and electronic atomization device

Abstract

The invention relates to a heating control circuit, a heating control method and an electronic atomization device. The heating control circuit comprises a heating assembly used for heating an atomization assembly of the electronic atomization device; the processor module is used for outputting a first control signal to the first switch module and outputting a second control signal to the second switch module; the first switch module is connected between the power supply end and a first heating module of the heating assembly, and is used for controlling the first heating module to work in a first time period of each preset heating time period according to the first control signal; the second switch module is connected between the power supply end and a second heating module of the heating assembly and is used for controlling the second heating module to work in a second time period of each preset heating time period according to a second control signal; wherein the first time period and the second time period are not overlapped in each preset heating time period. According to the invention, the dependence of the electronic atomization device on the discharge capability of the battery assembly can be reduced.

Description

Technical Field

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

[0002] Existing electronic atomization devices generally include an atomizer and a battery assembly. A heating element is provided in the atomizer, which is used to heat the aerosol-generating matrix stored in the atomizer to form an aerosol under the drive of the battery. The atomizer and the battery assembly are pluggable and connected. The atomizer is usually disposable. After the aerosol-generating matrix in the atomizer is used up, a new atomizer is replaced. The battery assembly is reusable. After the atomizer is used up, a new atomizer can be replaced to work.

[0003] At present, for an atomizer composed of multiple atomizing components, multiple heating modules are usually set in the atomizer, and these heating modules are used to heat the corresponding atomizing components. However, these heating modules are usually connected in parallel, and the battery component needs to meet the total power demand of these heating modules, which is highly dependent on the discharge capacity of the battery component. Summary of the invention

[0004] Based on this, it is necessary to provide a heating control circuit, a heating control method and an electronic atomization device to address the problem that the electronic atomization device with multiple atomization components is highly dependent on the discharge capacity of the battery component.

[0005] A heating control circuit is provided, which is applied to an electronic atomization device, and the circuit comprises:

[0006] A heating component, used to heat the atomizing component of the electronic atomizing device;

[0007] A processor module, the processor module is used to output a first control signal to the first switch module and output a second control signal to the second switch module;

[0008] A first switch module, the first switch module is connected between the power supply end and the first heating module of the heating component, and is used to control the first heating module to work in a first time period of each preset heating time cycle according to the first control signal;

[0009] A second switch module, the second switch module is connected between the power supply end and the second heating module of the heating component, and is used to control the second heating module to work in a second time period of each preset heating time cycle according to the second control signal;

[0010] Wherein, the first time period and the second time period do not overlap in each of the preset heating time periods.

[0011] In one of the embodiments, the heating control circuit further includes a boost module;

[0012] The processor module is used for outputting a boost control signal to the boost module when the sum of the first heating duty cycle of the first heating module and the second heating duty cycle of the second heating module is greater than a preset duty cycle threshold;

[0013] The boost module is used to boost the output voltage at the power supply end according to the boost control signal;

[0014] The processor module is further configured to generate the first control signal and the second control signal according to the boosted output voltage of the power supply end.

[0015] In one of the embodiments, the processor module is used to measure the minimum target boost voltage corresponding to the power supply end according to the first real-time resistance value of the first heating module, the first target heating duty cycle of the first heating module, the second real-time resistance value of the second heating module, and the second target heating duty cycle of the second heating module, and output a boost control signal to the boost module according to the minimum target boost voltage;

[0016] The boost control signal is used to control the output voltage of the boosted power supply end to be greater than or equal to the minimum target boost voltage, and the sum of the first target heating duty cycle and the second target heating duty cycle is equal to the preset duty cycle threshold.

[0017] In one embodiment, the heating control circuit further includes:

[0018] a first resistance module, wherein a first end of the first resistance module is connected to the power supply end, and a second end of the first resistance module is connected to the first heating module;

[0019] a second resistance module, wherein a first end of the second resistance module is connected to the power supply end, and a second end of the second resistance module is connected to the second heating module;

[0020] The processor module is used to measure the first voltage at the power supply end, the second voltage at the second end of the first resistance module, and the third voltage at the second end of the second resistance module, and determine the first real-time resistance value of the first heating module according to the first voltage and the second voltage, and determine the second real-time resistance value of the second heating module according to the first voltage and the third voltage.

[0021] In one embodiment, the heating control circuit further includes:

[0022] A first current measuring module, the first current measuring module is connected between the first heating module and the first switch module, and is used to measure a first real-time current flowing through the first heating module;

[0023] A second current measuring module, the second current measuring module is connected between the second heating module and the second switch module, and is used to measure a second real-time current flowing through the second heating module;

[0024] The processor module is used to measure a first real-time voltage size corresponding to the first heating module and a second real-time voltage size corresponding to the second heating module, and to measure a first real-time resistance size of the first heating module according to the first real-time voltage size and the first real-time current size, and to measure a second real-time resistance size of the second heating module according to the second real-time voltage size and the second real-time current size.

[0025] In one embodiment, the first switch module includes a first power switch element and a second power switch element;

[0026] The first power switch element is connected between the power supply end and the first heating module, and the first power switch element is used to conduct or cut off the power supply path between the first heating module and the power supply end;

[0027] The first control terminal of the processor module is connected to the control electrode of the first power switch element, and is used to output a first control signal to the control electrode of the first power switch element, wherein the first control signal is used to control the first power switch element to close when it is within a first time period of each preset heating time cycle, and to control the first power switch element to open when it is not within the first time period of each preset heating time cycle;

[0028] The second power switch element is connected between the power supply end and the second heating module, and the second power switch element is used to conduct or cut off the power supply path between the second heating module and the power supply end;

[0029] The second control end of the processor module is connected to the control electrode of the second power switching element, and is used to output a second control signal to the control electrode of the second power switching element, wherein the second control signal is used to control the second power switching element to close when it is within the second time period of each preset heating time cycle, and to control the second power switching element to open when it is not within the second time period of each preset heating time cycle.

[0030] A heating control method is provided, which is used in the heating control circuit as described above, and the method comprises:

[0031] Acquire a first control signal and a second control signal;

[0032] By outputting a first control signal to the first switch module, the first heating module of the heating component is controlled to heat the atomization component of the electronic atomization device within a first time period of each preset heating time cycle;

[0033] By outputting a second control signal to the second switch module, the second heating module of the heating component is controlled to heat the atomizing component within a second time period of each preset heating time cycle; wherein the first time period and the second time period do not overlap within each preset heating time cycle;

[0034] Wherein, the first time period and the second time period do not overlap in each of the preset heating time periods.

[0035] An electronic atomization device is provided, comprising an atomization component, a power supply component and a heating control circuit, wherein the power supply component is connected to the power supply end of the heating control circuit and is used to supply power to the heating control circuit, and the heating control circuit is used to perform heating control on the atomization component, and the heating control circuit is the heating control circuit as described above.

[0036] The above-mentioned heating control circuit, heating control method and electronic atomization device are provided with a first switch module connected between the power supply end and the first heating module of the heating component, and a second switch module connected between the power supply end and the second heating module of the heating component. In this way, the processor module outputs a first control signal to the first switch module and outputs a second control signal to the second switch module, so that the first heating module can be controlled to operate in a first time period of each preset heating time cycle, and the second heating module can be controlled to operate in a second time period of each preset heating time cycle, and the first time period and the second time period do not overlap in each preset heating time cycle. In this way, the heating components can be controlled to work alternately in each preset heating time cycle, and the battery component of the electronic atomization device only needs to meet the power requirements of the first heating module or the second heating module separately in each preset heating time cycle, thereby reducing the dependence on the discharge capacity of the battery component. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the internal circuit of an electronic atomization device with multiple atomization components in one embodiment;

[0038] Figure 2 is a module schematic diagram of a heating control circuit in one embodiment;

[0039] Figure 3 It is a schematic diagram of a circuit module when a boost module is provided in a heating control circuit in an embodiment;

[0040] Figure 4 A schematic diagram of a module of a heating control circuit in an embodiment when the first switch module includes a first power switch element and the second switch module includes a second power switch element;

[0041] Figure 5 A schematic diagram of the variation of the operating voltage across the first heating module and the second heating module over time in one embodiment;

[0042] Figure 6 is a schematic diagram of the variation of the working voltage across the first heating module and the second heating module over time in another embodiment;

[0043] Figure 7 A schematic diagram of the variation of the operating voltage across the first heating module and the second heating module over time in another embodiment;

[0044] Figure 8 A schematic diagram of a module of a heating control circuit when the heating control circuit includes a first resistance module and a second resistance module in an embodiment;

[0045] Fig. 9 A schematic diagram of the circuit structure of a heating control circuit in an embodiment in which the first resistance module is composed of a first measuring switch device and a first resistor and the second resistance module is composed of a second measuring switch device and a second resistor;

[0046] Fig.10 It is a schematic diagram of the circuit structure when a circuit switch component is provided in the heating control circuit in one embodiment;

[0047] Fig.11 It is a schematic diagram of the circuit structure when a first current measurement module and a second current measurement module are provided in a heating control circuit in an embodiment;

[0048] Fig.12 Schematic diagram of a heating control method in one embodiment. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] The electronic atomization device of the present application is used to heat the aerosol generating matrix to generate an aerosol for the user. The heating method may be convection, conduction, radiation or a combination thereof. The aerosol generating matrix may be in the form of a liquid, a gel, a paste or a solid, etc. When the aerosol generating matrix is ​​a solid, it may be a solid in the form of crushed, granulated, powdered, granular, strip or sheet. The aerosol generating matrix includes, but is not limited to, materials used for medical, health, health and beauty purposes, for example, the aerosol generating matrix is ​​a medicinal liquid, an oil, or the aerosol generating matrix is ​​a plant material, such as a plant root, stem, leaf, flower, bud, seed, etc. That is, the embodiments of the present application do not limit the heating method, form and use of the aerosol generating matrix.

[0051] The multiple atomization components of the atomizer in the above-mentioned electronic atomization device are usually loaded with different types of aerosol generating matrices, and each atomization component corresponds to a heating module. The heating module can be provided separately or integrated with the atomization component, that is, the heating module is provided as a part of the atomization component. The heating modules of these atomization components are usually designed in parallel, so as to meet the demand for independent heating of each atomization component. However, since the heating modules are connected in parallel, the battery assembly needs to meet the total power demand of these heating modules, which requires the battery assembly to have a strong discharge capacity, and therefore it is highly dependent on the discharge capacity of the battery assembly.

[0052] As an example, Figure 1 As shown, Figure 1 The battery component includes a battery cell (power source) and an MCU (processor module), the battery cell is used to provide electrical energy, and the MCU is used to control the heating module 1 and the heating module 2 to work; the atomizer includes a first atomization component and a second atomization component, the first atomization component may include a heating module 1, and the heating module 1 is used to heat the aerosol generation matrix loaded in the first atomization component to form an aerosol; the second atomization component includes a heating module 2, and the heating module 2 is used to heat the aerosol generation matrix loaded in the second atomization component to form an aerosol, and the heating module 1 and the heating module 2 are designed in parallel.

[0053] In one embodiment, Figure 2As shown, a heating control circuit is provided, which is applied to an electronic atomization device, wherein the electronic atomization device includes an atomizer and a battery assembly, wherein the atomizer includes a first atomization assembly and a second atomization assembly, and the heating control circuit includes a first heating module 100, a second heating module 200, a processor module 300, a first switch module 400 and a second switch module 500. One end of the first heating module 100 is connected to the first switch module 400, and the other end of the first heating module 100 is grounded. The first heating module 100 is used to heat the aerosol generating matrix loaded in the first atomization component of the electronic atomization device to form an aerosol; one end of the second heating 200 component is connected to the second switch module 500, and the other end of the second heating module 200 is grounded. The second heating module 200 is used to heat the aerosol generating matrix loaded in the second atomization component of the electronic atomization device to form an aerosol; the processor module 300 is respectively connected to the first switch module 400 and the second switch module 500, and the processor module 300 is used to output a first control signal to the first switch module 400, and the first control signal is used to control the first switch module 400 to close or open, and the processor module 300 is used to output a second control signal to the second switch module 500, and the second control signal is used to control the second switch module 500 to close or open.

[0054] The first switch module 400 is connected between the power supply end and the first heating module 100, and is used to continuously close and open within the preset heating time period according to the first control signal, so as to control the first heating module 100 to work within the first time period of each preset heating time period, so that the power supply path where the first heating module 100 is located will be continuously in the on state within the first time period of each preset heating time cycle, and the first heating module 100 is working at this time, and will be continuously in the off state outside the first time period of each preset heating time cycle, and the first heating module 100 is not working at this time, wherein the power supply end can be the power supply output end of the battery cell in the battery assembly of the electronic atomization device.

[0055] The second switch module 500 is connected between the power supply end and the second heating module 200, and is used to continuously close and open within the preset heating time period according to the second control signal, so as to control the second heating module 200 to work within the second time period of each preset heating time period, so that the power supply path where the second heating module 200 is located will be continuously in the on state within the second time period of each preset heating time cycle, and the second heating module 200 is working at this time, and will be continuously in the off state outside the second time period of each preset heating time cycle, and the second heating module 200 is not working at this time.

[0056] Among them, the first time period and the second time period do not overlap in each preset heating time cycle, so that the first heating module 100 and the second heating module 200 can be controlled to work alternately in each preset heating time cycle, and the power supply end only needs to meet the power demand of the first heating module 100 or the second heating module 200 separately in each preset heating time cycle, thereby reducing the dependence on the discharge capacity of the battery assembly.

[0057] As an example, the first control signal and the second control signal can both be PWM signals. In this way, by controlling the duty cycle of the first control signal and the second control signal, it is possible to control the first heating module 100 to operate in the first time period of each preset heating time cycle according to the first control signal, and control the second heating module 200 to operate in the second time period of each preset heating time cycle according to the second control signal, and the first time period and the second time period do not overlap in each of the preset heating time cycles.

[0058] In one embodiment, Figure 3 As shown, the heating control circuit also includes a boost module 600, one end of the boost module 600 is connected to the power supply end, the other end of the boost module 600 is connected to the first switch module 400 and the second switch module 500, and the boost control end of the boost module 600 is connected to the processor module 300.

[0059] The processor module 300 can measure or calculate the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200; if the sum of the first heating duty cycle and the second heating duty cycle is greater than the preset duty cycle threshold, it means that the current output voltage of the power supply end cannot simultaneously meet the power requirements of the first heating module 100 and the second heating module 200 within the preset heating time period. Therefore, the processor module 300 is required to output a boost control signal to the boost module 600 through the boost control end of the boost module 600 to control the boost module 600 to boost the output voltage of the power supply end.

[0060] As an example, the processor module 300 measures the first real-time resistance value of the first heating module 100 and the second real-time resistance value of the second heating module 200, and then calculates the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200 based on the first real-time resistance value of the first heating module 100, the first target heating power of the first heating module 100, the second real-time resistance value of the second heating module 200, the second target heating power of the second heating module 200 and the current output voltage of the power supply end.

[0061] As an example, a specific calculation formula for calculating the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200 is as follows:

[0062] P 1 =(U*U*D 1 )R 1

[0063] P 2 =(U*U*D 2 )R 2

[0064] Among them, P 1 is the first target heating power, which is the heating power required for the first heating module 100 to achieve a preset heating effect, P 2 is the second target heating power, which is the heating power required for the second heating module 200 to achieve the preset heating effect, U is the current output voltage of the power supply end, and D 1 is the first heating duty cycle of the first heating module 100, D 2 is the second heating duty cycle of the second heating module 200 .

[0065] As an example, the preset duty ratio threshold can be 100%. If the sum of the first heating duty ratio and the second heating duty ratio is greater than 100%, it means that the working periods of the first heating module 100 and the second heating module 200 within the preset heating time period will overlap. At this time, the current output voltage of the power supply end cannot meet the heating requirements of the first heating module 100 and the second heating module 200 simultaneously and individually within the preset heating time period. Therefore, it is necessary to boost the output voltage of the power supply end. In this way, under the premise that the heating requirements of the first heating module 100 and the second heating module 200 can be met simultaneously and individually within a fixed preset heating time period, the first heating duty ratio and the second heating duty ratio can be reduced by increasing the output voltage of the power supply end, so that the sum of the first heating duty ratio and the second heating duty ratio is less than 100%, and the working periods of the first heating module 100 and the second heating module 200 within the preset heating time period will not overlap.

[0066] Therefore, in this embodiment, under the condition of fixing the preset heating time period of the electronic atomization device, the atomization energy of each heating module for the atomization component can be satisfied by increasing the output voltage of the power supply end, and at the same time, the first heating module 100 and the second heating module 200 can be controlled to work in time-sharing within the preset heating time period, and the working time periods do not overlap, so that instantaneous high current will not be superimposed.

[0067] As an example, if the sum of the first heating duty cycle and the second heating duty cycle is less than or equal to 100%, it means that at this time, the working time periods of the first heating module 100 and the second heating module 200 in the preset heating time cycle will not overlap. At this time, the processor module 300 can generate a first control signal according to the first heating duty cycle of the first heating module 100. Using the first control signal, the first heating module 100 can be controlled to work in the first time period of each preset heating time cycle, and a second control signal can be generated according to the second heating duty cycle of the second heating module 200. Using the second control signal, the second heating module 200 can be controlled to work in the second time period of each preset heating time cycle, and the first time period and the second time period do not overlap in each preset heating time cycle, so that the first heating module 100 and the second heating module 200 can be controlled to perform time-sharing heating in the preset heating time cycle.

[0068] In one embodiment, when the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200 are greater than 100%, the processor module 300 can measure the first real-time resistance value of the first heating module 100 and the second real-time resistance value of the second heating module 200, and calculate the minimum target boost voltage corresponding to the power supply end according to the first real-time resistance value of the first heating module 100, the first target heating duty cycle of the first heating module 100, the first target heating power of the first heating module 100, the second real-time resistance value of the second heating module 200, the second target heating duty cycle of the second heating module 200, and the second target heating power of the second heating module 200, wherein the sum of the first target heating duty cycle and the second target heating duty cycle is equal to 100%. This embodiment realizes quantitatively and accurately analyzing and calculating the minimum target boost voltage required for boosting the power supply end when the output voltage of the power supply end cannot meet the atomization energy of the first heating module 100 and the second heating module 200 within a fixed preset heating time cycle. In this way, the processor module 300 uses the minimum target boost voltage to control the boost module 600 to accurately boost the output voltage of the power supply end to the required voltage level.

[0069] Among them, if the output voltage of the power supply end is the minimum target boost voltage, the working time period of the first heating module 100 and the second heating module 200 just covers the entire preset heating time period. Therefore, it is only necessary to boost the output voltage of the power supply end to be greater than or equal to the minimum target boost voltage to ensure that the working time periods of the first heating module 100 and the second heating module 200 do not overlap within the preset heating time period.

[0070] Therefore, the processor module 300 can generate a corresponding boost control signal according to the minimum target boost voltage, and output the boost control signal to the boost module 600. The boost control 600 uses the boost control signal to boost the output voltage of the power supply end to ensure that the output voltage of the power supply end after boosting is greater than or equal to the above-mentioned minimum target boost voltage.

[0071] Furthermore, the processor module 300 recalculates the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200 according to the output voltage of the boosted power supply end, the first real-time resistance value of the first heating module 100, the first target heating power of the first heating module 100, the second real-time resistance value of the second heating module 200 and the second target heating power of the second heating module 200, and then generates a first control signal according to the recalculated first heating duty cycle to control the first heating module 100 to operate in the first time period of each preset heating time cycle, and generates a second control signal according to the recalculated second heating duty cycle to control the second heating module 200 to operate in the second time period of each preset heating time cycle, and can ensure that the first time period and the second time period do not overlap in each preset heating time cycle.

[0072] As an example, the calculation formula for calculating the minimum target boost voltage corresponding to the power supply end is as follows:

[0073] P 1 =(U 0 *U 0 *D 3 )R 1

[0074] P 2 =(U 0 *U 0 *D 4 )R 2

[0075] D 3 +D 4 =100%

[0076] Among them, U 0 is the lowest target boost voltage, D 3 is the first target heating duty cycle of the first heating module 100, D 4 is the second target heating duty cycle of the second heating module 200, P 1 is the first target heating power of the first heating module 100, P 2 is the second target heating power of the second heating module 200, R 1 is the first real-time resistance value of the first heating module 100, R 2is the second real-time resistance value of the second heating module 200.

[0077] In one embodiment, Figure 4 As shown, the first switch module 400 includes a first power switch element Q1, a current limiting resistor Rb1 and a pull-down resistor Ra1, the first power switch element Q1 is connected between the power supply end and the first heating module 100, the processor module 300 is connected to the control electrode of the first power switch element Q1, the pull-down resistor Ra1 is connected between the power supply end and the control electrode of the first power switch element Q1, and the current limiting resistor Rb1 is connected between the processor module 300 and the control electrode of the first power switch element Q1; the first switch module 500 includes a second power switch element Q2, a current limiting resistor Rb2 and a pull-down resistor Ra2, the second power switch element Q2 is connected between the power supply end and the second heating module 200, the processor module 300 is connected to the control electrode of the second power switch element Q2, the pull-down resistor Ra2 is connected between the power supply end and the control electrode of the second power switch element Q2, and the current limiting resistor Rb2 is connected between the processor module 300 and the control electrode of the second power switch element Q2.

[0078] The first power switch element Q1 and the second associated switch element Q2 may both be triodes or MOS tubes, and the control electrode may be the base of the triode or the gate of the MOS tube.

[0079] In this way, the processor module 300 inputs the first control signal to the control electrode of the first power switch element Q1, which can control the first power switch element Q1 to turn on or cut off the power supply path between the first heating module 100 and the power supply end, and then by adjusting the duty cycle of the first control signal, the first power switch element Q1 can be controlled to be closed within the first time period of each preset heating time cycle, and to be disconnected when it is not within the first time period of each preset heating time cycle. In this way, the power supply path between the first heating module 100 and the power supply end can be controlled to be turned on within the first time period of each preset heating time cycle, and to be disconnected when it is not within the first time period of each preset heating time cycle. At this time, the first heating module 100 will work within the first time period of each preset heating time cycle, and will not work when it is not within the first time period of each preset heating time cycle.

[0080] The processor module 300 inputs a second control signal to the control electrode of the second power switch element Q2, which can control the second power switch element Q2 to turn on or cut off the power supply path between the second heating module 200 and the power supply end, and then by adjusting the duty cycle of the second control signal, the second power switch element Q2 can be controlled to be closed within the second time period of each preset heating time cycle, and to be disconnected when not within the second time period of each preset heating time cycle. In this way, the power supply path between the second heating module 200 and the power supply end can be controlled to be turned on within the second time period of each preset heating time cycle, and to be disconnected when not within the second time period of each preset heating time cycle. At this time, the second heating module 200 will work within the first time period of each preset heating time cycle, and will not work when not within the first time period of each preset heating time cycle.

[0081] Since the first time period and the second time period do not overlap in each preset heating time cycle, the first heating module 100 and the second heating module 200 can be controlled to work alternately in each preset heating time cycle, thereby reducing the power supply capacity of the battery assembly of the electronic atomization device.

[0082] As an example, the pull-down resistors Ra1 and Ra2 play the role of pulling down the voltage, which can extract the charge on the control electrode of the power switching element as quickly as possible and lower the voltage on the control electrode of the power switching element. This can prevent the power switching element from being triggered incorrectly when the processor module 300 does not stably output the control signal or does not output the control signal; the current limiting resistors Rb1 and Rb2 play a current limiting role, which is used to prevent the current output by the processor module 300 from being too large and damaging the power switching element.

[0083] As an example, Figures 5 to 7 As shown, a schematic diagram of the operating voltage at both ends of the first heating module 100 and the second heating module 200 changing with time, t1 period, t2 period, ..., tn period are all preset heating time periods, t1A, t2A, ..., tnA are all first time periods of the preset heating time period, t1B, t2B, ... tnB are all second time periods of the preset heating time period; Figure 5 The first time and the second time period together constitute a preset heating time period, so the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200 add up to 100%; Figure 6 The first time period and the second time period do not completely occupy the preset time heating cycle. In each preset heating time cycle, there is a heating idle window after the second heating module finishes working. In this heating idle window, both the first heating module and the second heating module do not work. Therefore, the sum of the first heating duty cycle of the first control signal of the first heating module 100 and the second heating duty cycle of the second heating module 200 is less than 100%; Figure 7 The first time period and the second time period also do not completely occupy the preset time heating cycle. In each preset heating time cycle, there is a heating idle window between the first time period and the second time period. In this heating idle window, both the first heating module and the second heating module do not work. Therefore, the sum of the first heating duty cycle of the first heating module 100 and the second heating duty cycle of the second heating module 200 is less than 100%.

[0084] It should be noted that as the heating process proceeds, the temperature of the heating bodies in the first heating module 100 and the second heating module 200 will continue to increase.

[0085] Reference Figure 8 In one embodiment, the heating control circuit further includes a first resistance module 700 and a second resistance module 800, wherein the first end of the first resistance module 700 is connected to the power supply end, and the second end of the first resistance module 700 is connected to the first heating module 100; the first end of the second resistance module 800 is connected to the power supply end, and the second end of the second resistance module 800 is connected to the second heating module 200, and the processor module 300 includes a first control end P1, a second control end P2, a third control end P3, a fourth control end P4, a third voltage measuring end P5, a first voltage measuring end P6, and a second voltage measuring end P7, so that the processor module 300 can output a first control signal to the first switch module 400 through the first control end P1 , outputs a second control signal to the second switch module 500 through the second control terminal P2; the processor module 300 can also measure the first voltage at the power supply end through the third voltage measuring terminal P5, measure the second voltage at the second end of the first resistor module 700 through the first voltage measuring terminal P6, and measure the third voltage at the second end of the second resistor module 800 through the second voltage measuring terminal P7; the processor module 300 can also control the circuit path between the first resistor module 700 and the first heating module 100 to be turned on or off through the third control terminal P3, and control the circuit path between the second resistor module 800 and the second heating module 200 to be turned on or off through the fourth control terminal P4.

[0086] Therefore, the processor module 300 can control the circuit path between the first resistor module 700 and the first heating module 100 to be turned on when the first heating module 100 is not working. At this time, the processor module 300 can measure the first voltage at the power supply end and the second voltage at the second end of the first resistor module 700, thereby calculating the first real-time resistance of the first heating module 100 according to the first voltage, the second voltage and the resistance of the first resistor module 700. In this way, the first real-time resistance of the first heating module 100 can be measured in real time without affecting the operation of the first heating module 100. According to the first real-time resistance, the processor module 300 can control the power supply end to provide a suitable voltage to the first heating module 100, thereby ensuring that the heating power of the first heating module 100 meets the target power.

[0087] The processor module 300 can also control the circuit path between the first resistance module 700 and the first heating module 100 to be disconnected when the first heating module 100 is working, so as to ensure that the first resistance module 700 will not affect the heating power of the first heating module 100 when working.

[0088] As an example, the resistance of the first resistor module 700 is much larger than the resistance of the first heating module 100. In this way, when the circuit path between the first resistor module 700 and the first heating module 100 is turned on, the current flowing through the first heating module 100 is very small. Therefore, when the processor module 300 measures the first voltage at the power supply end and the second voltage at the second end of the first resistor module 700, the first heating module 100 basically does not consume the discharge power of the battery assembly, thereby ensuring that the voltage measurement process basically does not increase the dependence of the electronic atomization device on the discharge capacity of the battery assembly.

[0089] The processor module 300 can also control the circuit path between the second resistance module 800 and the second heating module 200 to be turned on when the second heating module 200 is not working. At this time, the processor module 300 can measure the first voltage at the power supply end and the third voltage at the second end of the second resistance module 800, thereby calculating the second real-time resistance of the second heating module 200 according to the first voltage, the third voltage and the resistance of the second resistance module 800. In this way, the second real-time resistance of the second heating module 200 can be measured in real time without affecting the operation of the second heating module 200. According to the second real-time resistance, the processor module 300 can control the power supply end to provide a suitable voltage to the second heating module 200, thereby ensuring that the heating power of the second heating module 200 meets the target power.

[0090] The processor module 300 is also used to control the circuit path between the second resistance module 800 and the second heating module 200 to be disconnected when the second heating module 200 is working, so as to ensure that the second resistance module 800 will not affect the heating power of the second heating module 200 when working.

[0091] As an example, the resistance value of the second resistor module 800 is much larger than the resistance value of the second heating module 200. In this way, when the circuit path between the second resistor module 800 and the second heating module 200 is turned on, the current flowing through the second heating module 200 is very small. Therefore, when the processor module 300 measures the first voltage at the power supply end and the third voltage at the second end of the second resistor module 800, the second heating module 200 basically does not consume the discharge power of the battery assembly, thereby ensuring that the voltage measurement process basically does not increase the electronic atomization device's dependence on the discharge capacity of the battery assembly.

[0092] In one embodiment, referring to Fig. 9 The first resistance module 700 includes a first measuring switch device 700A and a first resistor R1, the first measuring switch device 700A is connected between the power supply end and the first resistor R1, and the first resistor R1 is connected between the first measuring switch device 700A and the first heating module 100; the second resistance module 800 includes a second measuring switch device 800A and a second resistor R2, the second measuring switch device 800A is connected between the power supply end and the second resistor R2, and the second resistor R2 is connected between the second measuring switch device 800A and the second heating module 200; the third control terminal P3 of the processor module 300 is connected to the control electrode of the first measuring switch device 700A, and the fourth control terminal P4 of the processor module 300 is connected to the control electrode of the second measuring switch device 800A.

[0093] The processor module 300 can output a third control signal to the control electrode of the first measuring switch device 700A through the third control terminal P3, thereby controlling the first measuring switch device 700A to close or open. In this way, when the first measuring switch device 700A is closed, the circuit path between the power supply end and the first resistor R1 is turned on. At this time, the processor module 300 can measure the first voltage at the power supply end and the second voltage corresponding to the first heating module 100, and calculate the first real-time resistance of the first heating module 100 based on the first voltage, the second voltage and the resistance of the first resistor R1, thereby realizing real-time measurement of the resistance of the first heating module 100.

[0094] The processor module 300 can also output a fourth control signal to the control electrode of the second measuring switch device 800A through the fourth control terminal P4, thereby controlling the second measuring switch device 800A to close or open. In this way, when the second measuring switch device 800A is closed, the circuit path between the power supply terminal and the second resistor R2 is turned on. At this time, the processor module 300 can measure the first voltage at the power supply terminal and the third voltage corresponding to the second heating module 100, and calculate the second real-time resistance of the second heating module 200 according to the first voltage, the third voltage and the resistance of the second resistor R2, thereby realizing real-time measurement of the resistance of the first heating module 100.

[0095] Further references Fig. 9 The first measuring switch device 700A includes a first switch element Q3, a current limiting resistor Rb3 and a pull-down resistor Ra3. The first switch element Q3 is connected between the power supply end and the first resistor R1, the current limiting resistor Rb3 is connected between the control electrode of the first switch element Q3 and the third control terminal P3 of the processor module 300, and the pull-down resistor Ra3 is connected between the power supply end and the control electrode of the first switch element Q3. In this way, the processor module 300 can output a third control signal to the control electrode of the first switch element Q3 through the third control terminal P3 to control the first switch element Q3 to close or open, thereby realizing the control of the circuit path between the power supply end and the first resistor R1 to be turned on or off.

[0096] The second measuring switch device 800A includes a second switch element Q4, a current limiting resistor Rb4 and a pull-down resistor Ra4. The second switch element Q4 is connected between the power supply end and the second resistor R2. The current limiting resistor Rb is connected between the control electrode of the second switch element Q4 and the fourth control terminal P4 of the processor module 300. The pull-down resistor Ra4 is connected between the power supply end and the control electrode of the second switch element Q4. In this way, the processor module 300 can output a fourth control signal to the control electrode of the second switch element Q4 through the fourth control terminal P4 to control the second switch element Q4 to close or open, thereby controlling the circuit path between the power supply end and the second resistor R2 to be turned on or off.

[0097] As an example, the first switch element Q3 and the fourth switch element Q4 may be a triode or a MOS tube, and the control electrode is the base of the triode or the gate of the MOS tube.

[0098] As an example, the pull-down resistors Ra3 and Ra4 play the role of pulling down the voltage, which can extract the charge on the control electrode of the switching element as quickly as possible and lower the voltage on the control electrode of the switching element. This can prevent the switching element from being triggered by mistake when the processor module 300 does not stably output the control signal or does not output the control signal; the current limiting resistors Rb3 and Rb4 play a current limiting role, which is used to prevent the current output by the processor module 300 from being too large and damaging the switching element.

[0099] In one embodiment, referring to Fig.10 The heating control circuit also includes a circuit switch component 900, one end of the circuit switch component 900 is grounded, the other end of the circuit switch component 900 is connected to the first heating module 100 and the second heating module 200, and the fifth control terminal P8 of the processor module 300 is connected to the control electrode of the circuit switch component 900.

[0100] The circuit switching component 900 includes a third switching element Q5 and a current limiting resistor Rb5. One end of the third switching element Q5 is grounded, and the other end of the third switching element Q5 is connected to the first heating module 100 and the second heating module 200. The current limiting resistor Rb is connected between the control electrode of the third switching element Q5 and the fifth control terminal P8 of the processor module 300. The processor module 300 can input a fifth control signal to the control electrode of the third switching element Q5 through the fifth control terminal P8 to control the third switching element Q5 to close or open, so as to turn on or off the entire heating control circuit of the electronic atomization device.

[0101] As an example, the current limiting resistor Rb5 plays a current limiting role to prevent the processor module 300 from outputting an excessive current and damaging the switch element.

[0102] In one embodiment, referring to Fig.11 The heating control circuit also includes a first current measurement module 10A and a second current measurement module 10B; the first current measurement module 10A is connected between the first heating module 100 and the first switch module 400, and is used to measure the first real-time current flowing through the first heating module 100; the second current measurement module 10B is connected between the second heating module 200 and the second switch module 500, and is used to measure the second real-time current flowing through the second heating module 200.

[0103] The processor module 300 includes a first control terminal P1, a second control terminal P2, a first voltage measuring terminal P5, a second voltage measuring terminal P6 and a third voltage measuring terminal P7, so that the processor module 300 can output a first control signal to the first switch module 400 through the first control terminal P1, and output a second control signal to the second switch module 500 through the second control terminal P2; the processor module 300 can also measure the first real-time voltage size corresponding to the first heating module 100 through the first voltage measuring terminal P6, and measure the second real-time voltage size corresponding to the second heating module 200 through the second voltage measuring terminal P7.

[0104] In this way, the processor module 300 can calculate the first real-time resistance of the first heating module 100 according to the first real-time voltage and the first real-time current, and calculate the first real-time resistance of the second heating module 200 according to the second real-time voltage and the second real-time current, thereby realizing real-time measurement of the resistance of the first heating module 100 and the resistance of the second heating module 200. Further, according to the first real-time resistance and the second real-time resistance, the processor module 300 can control the power supply end or the set boost module 600 to provide an adaptive voltage for the first heating module 100 and the second heating module 200, so that the heating power of the first heating module 100 reaches the corresponding target power, and the heating power of the second heating module 200 reaches the corresponding target power, thereby meeting the heating power requirements of each atomization component in the electronic atomization device.

[0105] As an example, the first current measuring module 10A and the second current measuring module 10B may be mainly composed of a precision resistor and an amplifier.

[0106] As an example, the processor module 300 may include one or more processing cores. The processor module 300 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 processor module 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).

[0107] In one embodiment, Fig.12 As shown, a heating control method is provided, which is used for the heating control circuit as described in the above embodiments. The method includes step 102, step 104 and step 106.

[0108] Step 102: Acquire a first control signal and a second control signal.

[0109] Step 104 , outputting a first control signal to the first switch module to control the first heating module of the heating component to heat the atomization component of the electronic atomization device within a first period of each preset heating time cycle.

[0110] Step 106, by outputting a second control signal to the second switch module, controlling the second heating module of the heating component to heat the atomization component within a second time period of each preset heating time cycle; wherein the first time period and the second time period do not overlap within each preset heating time cycle.

[0111] In one embodiment, the heating control method further includes:

[0112] Acquire a first heating duty cycle of the first heating module and a second heating duty cycle of the second heating module;

[0113] If the sum of the first heating duty cycle of the first heating module and the second heating duty cycle of the second heating module is greater than a preset duty cycle threshold, generating a boost control signal;

[0114] According to the boost control signal, boosting the output voltage of the power supply end corresponding to the heating component;

[0115] The first control signal and the second control signal are generated according to the boosted output voltage of the power supply end.

[0116] In one embodiment, generating a boost control signal comprises:

[0117] Measuring a minimum target boost voltage corresponding to the power supply end according to a first real-time resistance value of the first heating module, a first target heating duty cycle of the first heating module, a second real-time resistance value of the second heating module, and a second target heating duty cycle of the second heating module;

[0118] generating a boost control signal according to the minimum target boost voltage;

[0119] Wherein, the sum of the first target heating duty cycle and the second target heating duty cycle is equal to the preset duty cycle threshold.

[0120] In one embodiment, the heating control circuit further includes a first measuring switch device and a first resistor; the heating control method further includes:

[0121] By outputting a third control signal to a control electrode of the first measuring switch device, the first measuring switch device is controlled to be closed when the first heating module is not working;

[0122] When the first measuring switch device is closed, measuring a first voltage at the power supply end and a second voltage corresponding to the first heating module;

[0123] The first real-time resistance of the first heating module is measured according to the first voltage, the second voltage and the resistance of the first resistor.

[0124] In one embodiment, the heating control circuit further includes a second measuring switch device and a second resistor; the heating control method further includes:

[0125] By outputting a fourth control signal to a control electrode of the second measuring switch device, the second measuring switch device is controlled to be closed when the second heating module is not working;

[0126] When the second measuring switch device is closed, measuring a first voltage at the power supply end and a third voltage corresponding to the second heating module;

[0127] The second real-time resistance value of the second heating module is measured according to the first voltage value, the third voltage value and the resistance value of the second resistor.

[0128] In one embodiment, the heating control circuit further includes a first current measuring module and a second current measuring module; the heating control method further includes:

[0129] Measuring a first real-time current flowing through the first heating module by the first measuring module, and measuring a second real-time current flowing through the second heating module by the second measuring module;

[0130] Measuring a first real-time voltage corresponding to the first heating module and a second real-time voltage corresponding to the second heating module;

[0131] Measuring a first real-time resistance value of the first heating module according to the first real-time voltage value and the first real-time current value;

[0132] The second real-time resistance value of the second heating module is measured according to the second real-time voltage value and the second real-time current value.

[0133] In one embodiment, the heating control circuit further includes a boost module; the heating control method further includes:

[0134] Generate a voltage control signal according to the first real-time resistance value or the second real-time resistance value;

[0135] The output voltage of the boost module is controlled by outputting a voltage control signal to the voltage control terminal of the boost module, wherein the boost module is used to increase the output voltage of the power supply terminal.

[0136] The above method can control the first heating module and the second heating module to work alternately within each preset heating time period. The battery component of the electronic atomization device only needs to meet the power requirements of the first heating module or the second heating module separately within each preset heating time period, thereby reducing the dependence on the discharge capacity of the battery component.

[0137] In one embodiment, an electronic atomization device is provided, including an atomization component, a power supply component and a heating control circuit, wherein the power supply component is connected to a power supply end of the heating control circuit to supply power to the heating control circuit, and the heating control circuit is used to control the heating of the atomization component. The structure of the heating control circuit can be set with reference to the above embodiments, and will not be described in detail.

[0138] As an example, the power supply component may include a battery or a battery cell for storing electrical energy.

[0139] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A heating control circuit, characterized in that: Applied to an electronic atomization device, the circuit includes: A heating component, used to heat the atomizing component of the electronic atomizing device; A processor module, the processor module is used to output a first control signal to the first switch module and output a second control signal to the second switch module; A first switch module, the first switch module is connected between the power supply end and the first heating module of the heating component, and is used to control the first heating module to work in a first time period of each preset heating time cycle according to the first control signal; A second switch module, the second switch module is connected between the power supply end and the second heating module of the heating component, and is used to control the second heating module to work in a second time period of each preset heating time cycle according to the second control signal; Wherein, the first time period and the second time period do not overlap in each of the preset heating time periods.

2. The heating control circuit according to claim 1, characterized in that: The heating control circuit also includes a boost module; The processor module is used for outputting a boost control signal to the boost module when the sum of the first heating duty cycle of the first heating module and the second heating duty cycle of the second heating module is greater than a preset duty cycle threshold; The boost module is used to boost the output voltage at the power supply end according to the boost control signal; The processor module is further configured to generate the first control signal and the second control signal according to the boosted output voltage of the power supply end.

3. The heating control circuit according to claim 2, characterized in that: The processor module is used to measure the minimum target boost voltage corresponding to the power supply end according to the first real-time resistance value of the first heating module, the first target heating duty cycle of the first heating module, the second real-time resistance value of the second heating module, and the second target heating duty cycle of the second heating module, and output a boost control signal to the boost module according to the minimum target boost voltage; The boost control signal is used to control the output voltage of the boosted power supply end to be greater than or equal to the minimum target boost voltage, and the sum of the first target heating duty cycle and the second target heating duty cycle is equal to the preset duty cycle threshold.

4. The heating control circuit according to claim 3, characterized in that: The heating control circuit also includes: a first resistance module, wherein a first end of the first resistance module is connected to the power supply end, and a second end of the first resistance module is connected to the first heating module; a second resistance module, wherein a first end of the second resistance module is connected to the power supply end, and a second end of the second resistance module is connected to the second heating module; The processor module is used to measure the first voltage at the power supply end, the second voltage at the second end of the first resistance module, and the third voltage at the second end of the second resistance module, and determine the first real-time resistance value of the first heating module according to the first voltage and the second voltage, and determine the second real-time resistance value of the second heating module according to the first voltage and the third voltage.

5. The heating control circuit according to claim 3, characterized in that: The heating control circuit also includes: A first current measuring module, the first current measuring module is connected between the first heating module and the first switch module, and is used to measure a first real-time current flowing through the first heating module; A second current measuring module, the second current measuring module is connected between the second heating module and the second switch module, and is used to measure a second real-time current flowing through the second heating module; The processor module is used to measure a first real-time voltage size corresponding to the first heating module and a second real-time voltage size corresponding to the second heating module, and to measure a first real-time resistance size of the first heating module according to the first real-time voltage size and the first real-time current size, and to measure a second real-time resistance size of the second heating module according to the second real-time voltage size and the second real-time current size.

6. The heating control circuit according to claim 1, characterized in that: The first switch module includes a first power switch element and a second power switch element; The first power switch element is connected between the power supply end and the first heating module, and the first power switch element is used to conduct or cut off the power supply path between the first heating module and the power supply end; The first control terminal of the processor module is connected to the control electrode of the first power switch element, and is used to output a first control signal to the control electrode of the first power switch element, wherein the first control signal is used to control the first power switch element to close when it is within a first time period of each preset heating time cycle, and to control the first power switch element to open when it is not within the first time period of each preset heating time cycle; The second power switch element is connected between the power supply end and the second heating module, and the second power switch element is used to conduct or cut off the power supply path between the second heating module and the power supply end; The second control end of the processor module is connected to the control electrode of the second power switching element, and is used to output a second control signal to the control electrode of the second power switching element, wherein the second control signal is used to control the second power switching element to close when it is within the second time period of each preset heating time cycle, and to control the second power switching element to open when it is not within the second time period of each preset heating time cycle.

7. A heating control method, characterized in that: Applied to an electronic atomization device, the electronic atomization device, the method comprises: Acquire a first control signal and a second control signal; By outputting a first control signal to the first switch module, the first heating module of the heating component is controlled to heat the atomization component of the electronic atomization device within a first time period of each preset heating time cycle; By outputting a second control signal to the second switch module, the second heating module of the heating component is controlled to heat the atomization component within a second time period of each preset heating time cycle; wherein the first time period and the second time period do not overlap within each preset heating time cycle.

8. The method according to claim 7, characterized in that The method further comprises: Acquire a first heating duty cycle of the first heating module and a second heating duty cycle of the second heating module; If the sum of the first heating duty cycle of the first heating module and the second heating duty cycle of the second heating module is greater than a preset duty cycle threshold, generating a boost control signal; According to the boost control signal, boosting the output voltage of the power supply end corresponding to the heating component; The first control signal and the second control signal are generated according to the boosted output voltage of the power supply end.

9. The method according to claim 8, characterized in that The generating of the boost control signal comprises: Measuring a minimum target boost voltage corresponding to the power supply end according to a first real-time resistance value of the first heating module, a first target heating duty cycle of the first heating module, a second real-time resistance value of the second heating module, and a second target heating duty cycle of the second heating module; generating a boost control signal according to the minimum target boost voltage; Wherein, the sum of the first target heating duty cycle and the second target heating duty cycle is equal to the preset duty cycle threshold.

10. An electronic atomization device, characterized in that: include: An atomization component, a power supply component and a heating control circuit, wherein the power supply component is connected to the power supply end of the heating control circuit, and the heating control circuit is the heating control circuit as described in any one of claims 1-6.

Images