Power-adjustable resistance network calibration system and method for electronic cigarette atomization device

Abstract

The invention relates to a power-adjustable resistance network calibration system and method for an electronic cigarette atomization device. A feedback network plays roles of closed-loop detection and amplification / attenuation in a calibration stage. On one hand, control voltage of the central control unit is received, and on the other hand, sampling is performed from the output end of the boost circuit. Through an internal resistance voltage division and voltage superposition structure, the two paths of voltages are superposed according to a predetermined proportion to form a final feedback voltage. The boost circuit (DCDC switch booster) uses the feedback voltage output by the feedback network as the negative feedback input of the error amplifier thereof, and compares the feedback voltage with the internal reference voltage. When the feedback voltage is lower than the reference, the voltage booster increases the duty ratio of the switch, so that the output voltage rises; otherwise, the duty ratio is reduced. As the calibration control voltage of the central control unit is superposed in the feedback network, the whole loop realizes the fine control of the output: the central control unit only needs to modify once, and the solid-state source can output the required accurate voltage and power through the cooperation of the feedback network and the booster circuit.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomizers, and in particular to a resistor network calibration system with wide-range adjustable power in an electronic cigarette atomizer. Background Art

[0002] In traditional e-cigarette power supply control schemes, the DC-DC power supply serves as the core of the RF power source. The stability and adaptability of its output voltage directly determine the ultimate performance and consistency of the RF power. However, existing DC-DC designs often use fixed feedback resistors to set the output voltage, lacking the ability to dynamically adjust to account for individual module differences. Furthermore, the significant discreteness of RF power device characteristics (such as threshold voltage and gain) within each module leads to significant variations in the actual power output of different modules at the same set voltage (e.g., 28V). This not only reduces product yield but also makes it difficult to achieve a uniform vaping experience, further hindering the development of e-cigarettes in terms of large-scale manufacturing and brand consistency. Therefore, it is necessary to provide a DC-DC control mechanism that can adaptively adjust the supply voltage based on module characteristics to improve the output power consistency and atomization quality stability of solid-state RF systems under mass production conditions. In existing solutions, the power deviation between different modules at the same set voltage can be as high as ±15% (e.g., the output power range is 24-32W at 28V), resulting in a 30% drop in yield. Summary of the Invention

[0003] The purpose of this application is to provide a resistor network calibration system and method for an electronic cigarette atomizer with adjustable power to solve the above technical problems.

[0004] According to one aspect of the present application, a resistor network calibration system for an electronic cigarette atomizer with adjustable power is provided, comprising:

[0005] Central control unit, generates and outputs calibration control voltage;

[0006] The feedback network receives the calibration control voltage during calibration and generates a feedback voltage by superposition;

[0007] The boost circuit receives the feedback voltage and controls the solid-state power source to operate according to the feedback voltage.

[0008] In at least one embodiment of the present application, the resistor network calibration system for an electronic cigarette atomizer with adjustable power further includes:

[0009] The storage unit receives the feedback voltage and stores the feedback voltage or outputs the feedback voltage to the central control unit during operation.

[0010] In at least one embodiment of the present application, one end of the central control unit is electrically connected to the storage unit, and the other end is electrically connected to the feedback network and the boost circuit, the feedback network is connected to the boost circuit, and the end of the boost circuit away from the central control unit is electrically connected to a solid-state source.

[0011] In at least one embodiment of the present application, the feedback network includes:

[0012] A voltage dividing module connected in series with the boost circuit;

[0013] A receiving module has one end connected in series with the central control unit and the boost circuit, and the other end electrically connected to the voltage dividing module.

[0014] In at least one embodiment of the present application, the receiving module includes:

[0015] The first resistor has a first input end, a first output end, and a second output end. The first input end is electrically connected to the central control unit, the first output end is electrically connected to the boost circuit, and the second output end is electrically connected to the voltage divider module.

[0016] In at least one embodiment of the present application, the voltage divider module includes:

[0017] The second resistor has a second input terminal and a third output terminal, wherein the second input terminal is electrically connected to the second output terminal, and the third output terminal is electrically connected to the output terminal of the boost circuit.

[0018] In at least one embodiment of the present application, the voltage dividing module further includes:

[0019] The third resistor is located between the first resistor and the second resistor, and is electrically connected to the first resistor and the second resistor respectively.

[0020] In at least one embodiment of the present application, the third resistor has a third input terminal, a fourth output terminal and a fifth output terminal, the third input terminal is electrically connected to the second output terminal, the fourth output terminal is electrically connected to the second input terminal, and the fifth output terminal is grounded.

[0021] According to one aspect of the present application, a method for calibrating a resistor network with adjustable power for an electronic cigarette atomizer device is provided, which is applied to a resistor network calibration system with adjustable power for an electronic cigarette atomizer device as described above. The method comprises:

[0022] During calibration, the central control unit generates a preliminary voltage signal and sends it to the boost circuit, which controls the operation of the solid-state source according to the preliminary voltage signal;

[0023] acquiring the operating power of the solid-state source under the preliminary voltage signal to generate a first power value;

[0024] comparing the first power value with a power threshold, and if the first power value is less than the power threshold, generating a calibration power value according to a difference between the first power value and the power threshold;

[0025] generating a calibration control voltage according to the calibration power value;

[0026] Sending the calibration control voltage to a feedback network, which generates a feedback voltage based on the calibration control voltage and sends the feedback voltage to a boost circuit, which stores the boost circuit voltage in a storage unit;

[0027] The boost circuit receives the feedback voltage and adjusts the output voltage of the solid-state power source according to the feedback voltage.

[0028] In at least one embodiment of the present application, the method further includes:

[0029] During operation, the central control unit controls the boost circuit to generate a feedback voltage according to the feedback voltage stored in the storage unit, and outputs the feedback voltage to the solid-state source.

[0030] This application has the following beneficial effects:

[0031] This invention proposes a resistor network calibration system and method for adjustable power in electronic cigarette atomizers. During the calibration phase, the feedback network performs closed-loop detection and amplification / attenuation functions. It receives the control voltage from the central control unit and samples the output of the boost circuit.

[0032] Through the internal resistor voltage division and voltage superposition structure, the two voltages are superimposed in a predetermined ratio to form the final feedback voltage.

[0033] The boost circuit (DCDC switching booster) uses the feedback voltage output by the feedback network as the negative feedback input of its error amplifier and compares it with the internal reference voltage.

[0034] When the feedback voltage is lower than the reference, the booster increases the switch duty cycle to increase the output voltage; otherwise, it reduces the duty cycle.

[0035] Because the calibrated control voltage of the central control unit is superimposed on the feedback network, the entire loop achieves fine control over the output: the central control unit only needs to be modified once, and it can make the solid-state source output the required accurate voltage and power through the coordination of the feedback network and the boost circuit.

[0036] The introduction of a feedback network that superimposes central control signals and outputs realizes closed-loop calibration combining software and hardware. Each device can be calibrated individually at the factory or during maintenance to improve consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 This is a calibration circuit block diagram of a resistor network calibration system for an electronic cigarette atomizer device with adjustable power according to one embodiment of the present application;

[0039] Figure 2 This is a circuit block diagram before calibration of a resistor network calibration system for an electronic cigarette atomizer device with adjustable power according to one embodiment of the present application;

[0040] Figure 3 This is a partial circuit diagram of a resistor network calibration system for an electronic cigarette atomizer with adjustable power according to one embodiment of the present application.

[0041] Description of Figure Numbers:

[0042] 110. Central control unit; 120. Feedback network; 121. Voltage divider module; 122. Receiving module; 130. Voltage boost circuit; 140. Storage unit; 150. Solid-state source. DETAILED DESCRIPTION

[0043] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] Please refer to Figure 1 - Figure 3 According to one aspect of the present application, a resistor network calibration system for an electronic cigarette atomizer with adjustable power is provided, comprising:

[0047] The central control unit 110 generates and outputs a calibration control voltage;

[0048] The feedback network 120 receives the calibration control voltage during calibration and generates a feedback voltage by superposition;

[0049] The boost circuit 130 receives the feedback voltage and controls the solid-state power supply to operate according to the feedback voltage.

[0050] In this embodiment, the central control unit 110 (usually an on-chip MCU or a dedicated control chip) generates a calibration control voltage signal through digital-to-analog conversion (DAC) according to a preset target power or target output voltage.

[0051] This signal is both the starting point of the calibration process and can be considered as a soft command of the desired output for subsequent closed-loop adjustment.

[0052] The feedback network 120 performs closed-loop detection and amplification / attenuation functions during the calibration phase. It receives the control voltage from the central control unit 110 and samples the output of the boost circuit 130 .

[0053] Through the internal resistor voltage division and voltage superposition structure, the two voltages are superimposed in a predetermined ratio to form the final feedback voltage.

[0054] The boost circuit 130 (DCDC switching booster) uses the feedback voltage output by the feedback network 120 as the negative feedback input of its error amplifier and compares it with the internal reference voltage.

[0055] When the feedback voltage is lower than the reference, the booster increases the switch duty cycle to increase the output voltage; otherwise, it reduces the duty cycle.

[0056] Because the calibrated control voltage of the central control unit 110 is superimposed on the feedback network 120, the entire loop achieves fine control over the output: the central control unit 110 only needs to be modified once, and the solid-state power source can output the required accurate voltage and power through the cooperation of the feedback network 120 and the boost circuit 130.

[0057] The introduction of the feedback network 120 that superimposes the central control signal and the output realizes closed-loop calibration combining software and hardware. Each device can be calibrated individually at the factory or during maintenance to improve consistency.

[0058] Since the threshold voltage and gain of each module vary slightly, these differences are compensated by fine-tuning the calibration control voltage, ensuring that the actual output error of different devices is significantly reduced at the same nominal power setting.

[0059] After the calibration is completed, the final control parameter or feedback voltage value can be written into the storage unit 140. When the device 140 enters normal operation, the parameter can be directly loaded without repeated iteration, which speeds up the response speed and reduces power consumption.

[0060] During mass production, the defective rate due to power drift can be greatly reduced through one-time automatic calibration.

[0061] In at least one embodiment of the present application, the resistor network calibration system for an electronic cigarette atomizer with adjustable power further includes:

[0062] The storage unit 140 receives the feedback voltage and stores the feedback voltage or outputs the feedback voltage to the central control unit 110 during operation.

[0063] In this embodiment, after the calibration cycle is completed and the target output power is reached, the final feedback voltage output by the feedback network 120 is simultaneously stored in the storage unit 140 .

[0064] The storage unit 140 may be a non-volatile memory (such as EEPROM, Flash) or a dedicated register, and is used to reliably store the digital or equivalent analog value of the voltage value.

[0065] After the device receives the ignition command, the central control unit 110 first reads the feedback voltage value obtained by previous calibration from the storage unit 140 .

[0066] After reading, the storage unit 140 outputs the voltage value back to the central control unit 110 , or directly provides it to a corresponding node of the feedback network 120 .

[0067] The central control unit 110 generates a corresponding calibration control voltage according to the stored value or directly schedules the feedback network 120 so that the feedback network 120 quickly outputs a preset feedback voltage.

[0068] After receiving the calibrated feedback voltage, the boost circuit 130 starts up immediately with the correct closed-loop reference, eliminating the need for time-consuming iterative measurement and fine-tuning.

[0069] If the system detects that the output power deviates from the threshold due to factors such as temperature drift, battery voltage change or RF module aging, the central control unit 110 can enter the calibration mode again to generate a new feedback voltage value, overwrite the old data in the storage unit 140, and complete the online recalibration.

[0070] By pre-saving the calibrated feedback value in the storage unit 140, multiple rounds of measurement and iteration during each ignition are eliminated. The system can stably output the target power within milliseconds, significantly improving the user operating experience.

[0071] This avoids repeated closed-loop calibration processes, reduces frequent switching adjustments of the boost circuit 130 , and reduces instantaneous current impact and overall energy consumption.

[0072] The storage unit 140 is used to store the feedback voltage value or its digital equivalent parameter.

[0073] In at least one embodiment of the present application, one end of the central control unit 110 is electrically connected to the storage unit 140, and the other end is electrically connected to the feedback network 120 and the boost circuit 130. The feedback network 120 is connected to the boost circuit 130, and the end of the boost circuit 130 away from the central control unit 110 is electrically connected to a solid-state source.

[0074] In this embodiment, one end of the central control unit 110 is electrically connected to the storage unit 140 via a digital bus (such as SPI, I2 C or parallel port) or an analog bus (such as DAC output / ADC input sharing).

[0075] After the calibration is completed, the central control unit 110 writes the latest feedback voltage value or its digital equivalent parameter into the storage unit 140.

[0076] During normal operation, the central control unit 110 reads the saved calibration parameters from the storage unit 140 to generate an initial or reference control signal.

[0077] In addition to communicating with the memory, the other end of the central control unit 110 outputs driving / reference signals to the feedback network 120 and the boost circuit 130 through independent pins.

[0078] The central control unit 110 outputs a calibration control voltage to the feedback network 120 ; and can simultaneously output a power-on enable signal or a mode selection signal to the boost circuit 130 .

[0079] The feedback network 120 collects the calibration voltage from the central control unit 110 and samples the output terminal of the boost circuit 130 , and generates a feedback voltage by superimposing or dividing the two.

[0080] The feedback voltage is directly used as the error amplifier input of the boost circuit 130 to implement closed-loop control.

[0081] The boost circuit 130 automatically adjusts the internal switch duty cycle according to the deviation from the internal reference voltage so that the output voltage converges to the desired value.

[0082] One end of the boost circuit 130 away from the central control unit 110 , ie, the high voltage output end thereof, is directly electrically connected to the power supply input of the solid-state RF source.

[0083] The closed-loop stable feedback voltage output provides accurate and adjustable voltage for the RF power device, thereby controlling the atomization heating power.

[0084] The series connection method ensures hierarchical wiring of control, feedback and power output. Low-voltage digital / analog signals are transmitted between the central control and storage and feedback network 120, and high-voltage power signals only flow between the boost circuit 130 and the solid-state source.

[0085] The central control unit 110 directly calls the feedback parameters in the storage unit 140 to coordinate the feedback network 120 and the boost circuit 130 to work together without the need for re-iterative calibration.

[0086] The system ignition response time is greatly shortened, improving the user operating experience.

[0087] The feedback network 120 is adjacent to the boost circuit 130 to form a low-latency local closed loop; the central control unit 110 only needs to be connected during initialization or recalibration.

[0088] The system has high stability and low jitter, which can ensure that the output power of the atomization device is consistent under different working conditions.

[0089] In at least one embodiment of the present application, the feedback network 120 includes:

[0090] The voltage dividing module 121 is connected in series with the boost circuit 130;

[0091] The receiving module 122 has one end connected in series with the central control unit 110 and the boost circuit 130 , and the other end electrically connected to the voltage dividing module 121 .

[0092] In this embodiment, the central control unit 110 generates an analog calibration control voltage through internal digital-to-analog conversion or PWM filtering, and sends the calibration control voltage to the receiving module 122 of the feedback network 120 .

[0093] The receiving module 122 is connected in series between the central control unit 110 and the reference input terminal of the boost circuit 130. It receives the calibration control voltage from the central control unit 110 and is prepared to cooperate with the sampled voltage sent by the voltage divider module 121.

[0094] The voltage divider module 121 is connected in series to the high voltage output terminal of the boost circuit 130 and is composed of two resistors to form a voltage divider network. The voltage is sampled from the high voltage output terminal and the sampled voltage obtained after resistor division is sent to the receiving module 122.

[0095] The receiving module 122 internally combines the calibration control voltage of the central control unit 110 and the sampled voltage of the voltage divider module 121 in a predetermined ratio to form a final feedback voltage, which is also sent back to the error amplifier of the boost circuit 130 as a negative feedback signal.

[0096] The boost circuit 130 compares the feedback voltage with the internal reference voltage and automatically adjusts the duty cycle of the switch tube so that the high voltage output quickly converges to the target voltage level, thereby driving the back-end solid-state RF source to output stable and adjustable power.

[0097] The voltage divider module 121 only contacts the high-voltage output, and the receiving module 122 only processes the central control voltage. The two interact through shielding or filtering connections to prevent high-voltage switch interference from directly entering the central control signal loop, thereby improving the system's anti-interference ability.

[0098] By adjusting the resistance ratio of the resistors in the receiving module 122 and the voltage divider module 121, the feedback weight of the central control voltage and the output sampling voltage can be accurately set, taking into account both the system response speed and output stability, and optimizing the closed-loop dynamic characteristics.

[0099] During factory or online recalibration, the power voltage can be fine-tuned by simply replacing or adjusting the resistance elements in the feedback network 120 or modifying the corresponding coefficients in the central control firmware. There is no need to change the main boost circuit 130, which reduces maintenance costs.

[0100] The modular feedback network 120 can maintain the same closed-loop characteristics under different batches, temperatures and load conditions, effectively reducing the output power differences between devices and improving product yield and user experience.

[0101] In at least one embodiment of the present application, the receiving module 122 includes:

[0102] The first resistor has a first input end, a first output end, and a second output end. The first input end is electrically connected to the central control unit 110 , the first output end is electrically connected to the boost circuit 130 , and the second output end is electrically connected to the voltage divider module 121 .

[0103] In at least one embodiment of the present application, the voltage dividing module 121 includes:

[0104] The second resistor has a second input terminal and a third output terminal, wherein the second input terminal is electrically connected to the second output terminal, and the third output terminal is electrically connected to the output terminal of the boost circuit 130 .

[0105] In at least one embodiment of the present application, the voltage dividing module 121 further includes:

[0106] The third resistor is located between the first resistor and the second resistor, and is electrically connected to the first resistor and the second resistor respectively.

[0107] In at least one embodiment of the present application, the third resistor has a third input terminal, a fourth output terminal and a fifth output terminal, the third input terminal is electrically connected to the second output terminal, the fourth output terminal is electrically connected to the second input terminal, and the fifth output terminal is grounded.

[0108] In this embodiment, the calibration control voltage generated by the central control unit 110 through DAC or PWM filtering is input to the first input end of the first resistor R2.

[0109] Inside R2, the voltage is distributed to its two output branches. At the first output end, the output voltage is attenuated by R2 and directly sent to the negative feedback input (reference end) of the boost circuit 130. At the second output end, the same voltage or a voltage attenuated by a fixed ratio is sent to the third input end of the third resistor R3.

[0110] The third resistor R3 is connected between the second output terminal of R2 and the voltage divider resistor R4, and has three ports: a third input terminal: receiving the branch voltage from R2; a fourth output terminal: transmitting the branch voltage to the second input terminal of the second resistor R4; and a fifth output terminal: grounding the excess voltage for use as a level reference.

[0111] The second resistor R4 is connected in series after R3 and is directly connected to the high-voltage output end of the boost circuit 130. The second input end is connected to the fourth output end of R3, and the third output end is connected to the output node of the boost circuit 130, which is used to sample the high-voltage output voltage and feed it back to the same network to synthesize the feedback voltage.

[0112] The boost circuit 130 compares the synthesized feedback voltage with the internal reference voltage, and automatically adjusts the duty cycle of the switch tube according to the deviation, so that the output voltage converges to the state of the feedback voltage, thereby accurately controlling the operating voltage and power of the solid-state RF source.

[0113] Through a three-resistor network, the central control command and the actual output are superimposed with controllable weights to achieve soft and hard dual closed-loop control. It no longer relies solely on fixed feedback resistors, thereby having a higher compensation ability for individual differences of devices.

[0114] The temperature drift coefficients of R2, R3, and R4 resistors from the same batch are similar, and the three are jointly exposed to environmental changes, which can ensure that the feedback ratio drifts synchronously with environmental changes and reduce the temperature and time drift errors of closed-loop control.

[0115] Since the feedback network 120 can adaptively compensate for the difference in threshold voltage and gain, it is ultimately ensured that the actual output error of each device is extremely small at the power level set by the user, thereby achieving a stable and consistent atomization effect.

[0116] According to one aspect of the present application, a method for calibrating a resistor network with adjustable power for an electronic cigarette atomizer device is provided, which is applied to a resistor network calibration system with adjustable power for an electronic cigarette atomizer device as described above. The method comprises:

[0117] During calibration, the central control unit 110 generates a preliminary voltage signal and sends it to the boost circuit 130 , which controls the operation of the solid-state power source according to the preliminary voltage signal;

[0118] acquiring the operating power of the solid-state source under the preliminary voltage signal to generate a first power value;

[0119] comparing the first power value with a power threshold, and if the first power value is less than the power threshold, generating a calibration power value according to a difference between the first power value and the power threshold;

[0120] generating a calibration control voltage according to the calibration power value;

[0121] The calibration control voltage is sent to the feedback network 120 , which generates a feedback voltage based on the calibration control voltage and sends the feedback voltage to the boost circuit 130 , which stores the feedback voltage in the storage unit 140 ;

[0122] The boost circuit 130 receives the feedback voltage and adjusts the output voltage of the solid-state power source according to the feedback voltage.

[0123] In this embodiment, when calibration begins, the central control unit 110 generates a preliminary voltage signal according to a factory preset or empirical value, and outputs it to the boost circuit 130 through a DAC or PWM filter circuit.

[0124] The boost circuit 130 drives the solid-state RF source according to the signal, so that the solid-state RF source operates at a corresponding voltage.

[0125] The system has a built-in RF power detection module (such as a bridge power sensor or a sampling resistor + ADC) to measure the output power of the solid-state source under the preliminary voltage signal in real time to obtain a first power value.

[0126] Comparing the first power value with a pre-set power threshold: if the first power value ≥ the power threshold, it indicates that the initial voltage has met or exceeded the target power and no further calibration is required;

[0127] If the first power value is less than the power threshold, the calibration power value is calculated according to the difference between the two.

[0128] The central control unit 110 converts the calibrated power value into a corresponding calibrated control voltage through an internal mapping table or control algorithm, and then outputs it through DAC / PWM.

[0129] The calibration control voltage enters the feedback network 120 , and the feedback network 120 combines an internal resistor voltage divider structure to superimpose the calibration control voltage and the output sampling voltage of the boost circuit 130 in a predetermined ratio to form a feedback voltage.

[0130] The feedback voltage is not only sent back to the boost circuit 130 to complete the next round of more precise closed-loop regulation, but is also written into the storage unit 140 to store the optimal feedback condition for this calibration.

[0131] The boost circuit 130 compares the feedback voltage with the internal reference voltage and autonomously adjusts the switch duty cycle to quickly converge the output voltage to a new, higher level, thereby driving the solid-state power source output power to reach the power threshold.

[0132] If necessary, the power can be measured again and fine-tuned until the power error meets the allowable range.

[0133] The central control unit 110 automatically calculates the calibration voltage according to the actual output power, eliminating the need for manual resistance adjustment or tedious manual calibration, thereby significantly improving production efficiency.

[0134] Multiple rounds of closed-loop measurement and adjustment closely align the actual output power with the target threshold, keeping the output error within a very small range and improving atomization consistency.

[0135] After the initial calibration is completed, the optimal feedback voltage is stored in the storage unit 140 and can be directly called at each subsequent startup. The system response time is shortened to milliseconds, and the user experience is smoother.

[0136] Recalibration is supported at any time during device use (for example, when power drift occurs due to environmental changes or aging), and calibration algorithms can be optimized through firmware upgrades to extend product lifecycle and maintain consistent performance.

[0137] In at least one embodiment of the present application, the method further includes:

[0138] During operation, the central control unit 110 controls the boost circuit 130 to generate a feedback voltage according to the feedback voltage stored in the storage unit 140 and outputs the feedback voltage to the solid-state power source.

[0139] In this embodiment, after the device enters the normal operation (ignition) mode, the central control unit 110 first reads the optimal feedback voltage value stored in the previous calibration phase from the storage unit 140 through the bus or register interface.

[0140] The central control unit 110 converts the read feedback voltage into a corresponding calibration control voltage (if the control voltage is directly stored in the architecture, this conversion can be omitted) and outputs it to the receiving end of the feedback network 120 through a DAC or PWM filter circuit.

[0141] The feedback network 120 quickly generates a feedback voltage consistent with the stored value based on the input calibration control voltage and its internal resistor voltage divider structure, and sends the feedback voltage to the negative input terminal of the error amplifier of the boost circuit 130 .

[0142] The boost circuit 130 compares the received feedback voltage with the internal reference voltage. If the two are equal, the current duty cycle is maintained and a stable voltage is output. If there is a slight deviation, the duty cycle is automatically adjusted to achieve fine-tuning of the output voltage.

[0143] Since the feedback network 120 and the central control unit 110 have preset optimal parameters, the boost circuit 130 does not need to be significantly calibrated, and the system can quickly lock to a predetermined output voltage.

[0144] The closed-loop stabilized output voltage is directly supplied to the solid-state RF power device, enabling it to operate at the optimal power obtained by previous calibration, achieving consistent and stable atomization effect.

[0145] By utilizing the stored feedback voltage, a precise control signal is generated in one go, eliminating the need for iterative calibration. The system only takes milliseconds from ignition command to stable output, significantly improving the user experience.

[0146] The same calibration parameters are used every time the system is started, ensuring that the output power of the atomizer remains consistent across different batches and usage environments, thus improving product consistency.

[0147] The above-described embodiments merely represent several embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. A resistor network calibration system for an electronic cigarette atomizer with adjustable power, characterized in that: include: Central control unit, generates and outputs calibration control voltage; The feedback network receives the calibration control voltage during calibration and generates a feedback voltage by superposition; The boost circuit receives the feedback voltage and controls the solid-state power source to operate according to the feedback voltage.

2. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 1, characterized in that: The resistor network calibration system for the electronic cigarette atomizer with adjustable power also includes: The storage unit receives the feedback voltage and stores the feedback voltage or outputs the feedback voltage to the central control unit during operation.

3. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 2, characterized in that: One end of the central control unit is electrically connected to the storage unit, and the other end is electrically connected to the feedback network and the boost circuit. The feedback network is connected to the boost circuit, and the boost circuit is electrically connected to a solid-state source at one end away from the central control unit.

4. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 1, characterized in that: The feedback network includes: A voltage dividing module connected in series with the boost circuit; A receiving module has one end connected in series with the central control unit and the boost circuit, and the other end electrically connected to the voltage dividing module.

5. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 4, characterized in that: The receiving module includes: The first resistor has a first input end, a first output end, and a second output end. The first input end is electrically connected to the central control unit, the first output end is electrically connected to the boost circuit, and the second output end is electrically connected to the voltage divider module.

6. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 5, characterized in that: The voltage divider module includes: The second resistor has a second input terminal and a third output terminal, wherein the second input terminal is electrically connected to the second output terminal, and the third output terminal is electrically connected to the output terminal of the boost circuit.

7. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 6, characterized in that: The voltage divider module further includes: The third resistor is located between the first resistor and the second resistor, and is electrically connected to the first resistor and the second resistor respectively.

8. The resistor network calibration system for an electronic cigarette atomizer with adjustable power according to claim 7, characterized in that: The third resistor has a third input terminal, a fourth output terminal and a fifth output terminal. The third input terminal is electrically connected to the second output terminal, the fourth output terminal is electrically connected to the second input terminal, and the fifth output terminal is grounded.

9. A method for calibrating a resistor network with adjustable power for an electronic cigarette atomizer, applied to a resistor network calibration system with adjustable power for an electronic cigarette atomizer according to any one of claims 1 to 8, characterized in that: The method comprises: During calibration, the central control unit generates a preliminary voltage signal and sends it to the boost circuit, which controls the operation of the solid-state source according to the preliminary voltage signal; acquiring the operating power of the solid-state source under the preliminary voltage signal to generate a first power value; comparing the first power value with a power threshold, and if the first power value is less than the power threshold, generating a calibration power value according to a difference between the first power value and the power threshold; generating a calibration control voltage according to the calibration power value; Sending the calibration control voltage to a feedback network, which generates a feedback voltage based on the calibration control voltage and sends the feedback voltage to a boost circuit, which stores the boost circuit voltage in a storage unit; The boost circuit receives the feedback voltage and adjusts the output voltage of the solid-state power source according to the feedback voltage.

10. The method for calibrating a resistor network with adjustable power for an electronic cigarette atomizer according to claim 9, wherein: The method further comprises: During operation, the central control unit controls the boost circuit to generate a feedback voltage according to the feedback voltage stored in the storage unit, and outputs the feedback voltage to the solid-state source.

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