Accurate oil supply control method and system and electronic cigarette

Abstract

The invention relates to an accurate oil supply control method, a control system and an electronic cigarette, which can accurately judge the oil quantity state through a dual mechanism of motor parameter estimation and real-time monitoring; the temperature detection module can monitor the state of the heating wire in real time, quickly respond to oil quantity changes and dynamically adjust the oil pumping opportunity and the oil pumping quantity strategy in time, accurate oil supply control is achieved, the real-time power temperature operation value is kept within the preset interval, and it is ensured that the atomization effect is always in the optimal state. Through real-time monitoring and timely oil supply, dry burning of the heating wire is effectively prevented, the service life of the electronic cigarette is prolonged, and the safety of the electronic cigarette is improved; accurate oil supply control can provide a stable atomization effect, the problems of oil leakage and dry burning are avoided, and the user experience is remarkably improved; and intelligent control is realized through a software algorithm, a complex mechanical structure is not needed, the production cost can be reduced, and the system reliability is improved.

Description

Technical Field

[0001] This invention relates to the field of electronic atomization technology, and in particular to a precise fuel supply control method, control system, and electronic cigarette. Background Technology

[0002] Electronic cigarettes are products that use atomization to turn nicotine and other substances into an aerosol for people to inhale. The most common method is to use wicking cotton to absorb the e-liquid and then atomize it into an aerosol.

[0003] With the continuous development of e-cigarette technology, users have increasingly higher demands for the user experience. E-cigarettes consist of an atomizer and a battery-operated main unit. The main unit provides power and control to the atomizer, which generates high-temperature atomized e-liquid after being powered on. Traditional refillable e-liquid e-cigarettes rely primarily on gravity or simple mechanical structures for refilling. When the e-liquid is depleted or nearly depleted, it is replenished by squeezing or inverting the bottle.

[0004] However, traditional e-liquid supply methods cannot dynamically adjust the e-liquid supply according to actual usage, easily leading to problems such as over-supply causing leakage or insufficient supply causing dry burning, resulting in inaccurate e-liquid supply. The inability to monitor the atomizer's e-liquid level in real time makes it difficult to replenish e-liquid promptly when needed, affecting atomization performance and user experience. The lack of a precise e-liquid level detection and control mechanism makes it impossible to achieve accurate timing and quantity control of e-liquid supply. When the e-liquid level is insufficient, the heating coil temperature will rise abnormally, easily causing dry burning, affecting the e-cigarette's lifespan and safety. Summary of the Invention

[0005] Therefore, it is necessary to provide a precise fuel supply control method, control system, and electronic cigarette that can monitor fuel level in real time, accurately control the timing and amount of fuel pumping, and ensure a stable and optimal atomization experience.

[0006] A precise oil supply control method, applied to electronic cigarettes, includes the following steps:

[0007] Oil pumping volume estimation involves collecting motor parameters and estimating the oil pumping volume based on those parameters.

[0008] Real-time monitoring detects the real-time temperature and output power of the electronic cigarette's heating coil;

[0009] Oil level status is determined by calculating the real-time power-temperature value based on the real-time temperature of the heating wire and the real-time output power to determine the current oil level status.

[0010] Dynamic adjustment: Based on the deviation between the real-time power and temperature calculation values ​​and the preset power and temperature calculation values, the timing and quantity of oil pumping are dynamically adjusted.

[0011] In one embodiment, the motor parameters include speed, torque, and running time, the pump oil volume is positively correlated with the motor parameters, and the estimated pump oil volume = K1nt + K2Tt + K3nTt + K0, where K1, K2, K3, and K0 are constants, n is the speed, T is the torque, and t is the running time.

[0012] In one embodiment, the calculated power-temperature value F is related to the ratio of power to temperature. When the oil volume is high, the ratio of output power to real-time temperature is balanced; when the oil volume is low, the ratio of output power to real-time temperature is low.

[0013] In one embodiment, the reasonable range of the preset power-temperature calculation value is F. min ≤F≤F max When F 实时 >F max When F is present, it is judged that the fuel level is sufficient; when F 实时 <F min At that time, it was determined that the oil level was low; wherein, the F min To be less than 30% of the oil storage chamber capacity, the F max It is greater than 80% of the oil storage chamber capacity.

[0014] In one embodiment, F is calculated. 实时 With F min and F max The deviation value when F min ≤F 实时 ≤F max When F 实时 <F min At that time, the motor is controlled to pump oil, and the amount of oil pumped by the motor is controlled to be within F. min -F 实时 ≤F 泵油 ≤F max -F 实时 Between; when F 实时 >F max At that time, the motor is controlled to reduce or stop pumping oil.

[0015] A precision fuel supply control system, using the above-mentioned control method, includes:

[0016] The oil pumping estimation module collects the motor's speed, torque, and running time in real time, and estimates the amount of oil pumped by the motor.

[0017] The temperature detection module monitors the temperature of the heating coil in the electronic cigarette in real time.

[0018] The power output module outputs the power required for the heating wire to atomize and records the real-time output power.

[0019] The oil level determination module has a preset power-temperature calculation threshold range. It calculates a real-time power-temperature calculation value based on the real-time temperature of the heating wire and the real-time output power. The oil level is determined by comparing this real-time power-temperature calculation value with the preset power-temperature calculation value.

[0020] The dynamic adjustment control module controls the motor to pump oil, reduce oil pumping, or stop oil pumping based on the oil quantity status determined by the oil quantity judgment module.

[0021] In one embodiment, the temperature detection module has a stable temperature coefficient value and the detection accuracy of the temperature detection module is ±1℃.

[0022] In one embodiment, the temperature detection module has a detection range of 0°C to 300°C.

[0023] An electronic cigarette that uses the aforementioned precision oil supply control system.

[0024] In one embodiment, the system includes a motor, a microcontroller unit, and a sensor, wherein the microcontroller unit controls the rotational speed and running time of the motor, and the sensor acquires the torque of the motor.

[0025] The aforementioned precise fuel supply control method, control system, and electronic cigarette have at least the following advantages:

[0026] This precise e-liquid supply control method, control system, and e-cigarette utilize a dual mechanism of motor parameter estimation and real-time monitoring to accurately determine the e-liquid level. The temperature detection module monitors the heating coil's status in real time, rapidly responding to changes in e-liquid level and dynamically adjusting the pumping timing and volume strategy to achieve precise e-liquid supply control, ensuring optimal atomization at all times. Real-time monitoring and timely e-liquid supply effectively prevent the heating coil from dry-burning, extending the e-cigarette's lifespan and safety. Precise e-liquid supply control provides stable atomization, avoiding leaks and dry-burning issues, significantly improving the user experience. Furthermore, intelligent control through software algorithms eliminates the need for complex mechanical structures, reducing production costs and improving system reliability. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a flowchart of the precise oil supply control method of the present invention;

[0029] Figure 2This is a schematic diagram of the precision oil supply control system of the present invention.

[0030] Notes: 10. Pump oil estimation module; 20. Temperature detection module; 30. Power output module; 40. Oil quantity judgment module; 50. Dynamic adjustment control module. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include steps or modules not listed, or may optionally include other steps or modules inherent to these processes, methods, products, or devices.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] Please see Figure 1 A flowchart of a precise oil supply control method.

[0035] A precise oil supply control method, applied to electronic cigarettes, includes the following steps:

[0036] S1. Pump oil volume estimation: Collect motor parameters and estimate the pump oil volume based on the motor parameters; among which, motor parameters include speed, torque and running time, and the pump oil volume is positively correlated with the motor parameters.

[0037] Specifically, under standard environmental conditions (temperature, humidity, air pressure, etc.), calibration experiments are conducted using standard e-cigarette oil. First, the actual parameter ranges for motor speed, torque, and running time are determined. Using orthogonal experimental design or uniform sampling, multiple calibration points are selected within the parameter range for the experiment. At each calibration point, motor speed, motor torque, actual running time, and actual pumping volume are recorded. The actual pumping volume can be obtained using precision measuring and weighing equipment, such as an electronic balance or flow meter. A calibration data table is established based on the recorded data, recording multiple sets of data pairs (speed, torque, running time, actual pumping volume). Of course, preprocessing operations such as outlier removal and data smoothing are required for the collected data. Then, based on the positive correlation between pumping volume and motor parameters, an estimation model is established: Estimated pumping volume = K1nt + K2Tt + K3nTt + K0, where K1, K2, K3, and K0 are constants. In actual operation, the microcontroller controls the motor speed and running time, the sensor samples the motor torque, and the motor speed n, motor torque T, and motor running time t of the electronic cigarette device are collected in real time. By substituting the collected parameter values ​​into the estimation model, the estimated pump oil volume can be calculated.

[0038] S2. Real-time monitoring: Detects the real-time temperature and output power of the electronic cigarette's heating coil.

[0039] The temperature of the electronic cigarette's heating coil is monitored in real time by the temperature detection module 20. The temperature detection module 20 needs to have a stable temperature coefficient and good linearity; it also needs stable detection accuracy (±1℃ in this embodiment) and good repeatability; and a stable detection range (0℃~300℃ in this embodiment). The real-time output power at a specific temperature is monitored and recorded.

[0040] S3. Oil level status judgment: Calculate the real-time power and temperature values ​​based on the real-time temperature of the heating wire and the real-time output power to determine the current oil level status.

[0041] Specifically, the system has a preset reasonable range for the calculated power and temperature values ​​F, and this reasonable range is F. min ≤F≤F maxThe calculated power-temperature value F is related to the ratio of power to temperature. In actual operation, when the oil level is low, the power is low and the temperature is high, resulting in a smaller ratio of output power to real-time temperature. Conversely, when the oil level is sufficient, the power is high enough for the temperature to rise significantly, leading to a more balanced ratio of output power to real-time temperature. The system can monitor in real-time the power required to reach a specific temperature at various oil levels. For example, at 220℃, with a high oil level, the average power is approximately 18W, while with a low oil level, the power is only about 10W. Based on this characteristic relationship between temperature and power at different oil levels, the functional relationship between the real-time power-temperature calculated value and the power and temperature can be calculated. Comparing the real-time power-temperature calculated value with the preset power-temperature calculated value allows the determination of the oil level status; when F... 实时 >F max When F is present, it is judged that the fuel level is sufficient; when F 实时 <F min At that time, it was determined that the fuel level was low. More specifically, it could be F min For less than 30% of the oil reservoir capacity, F max It is greater than 80% of the oil storage chamber capacity.

[0042] S4. Dynamic adjustment: Based on the deviation between the real-time power and temperature calculation values ​​and the preset power and temperature calculation values, dynamically adjust the timing and quantity of oil pumping.

[0043] Wherein, calculate F 实时 With F min and F max The deviation value when F min ≤F 实时 ≤F max When F is active, the motor maintains its current state; when F is active, the motor maintains its current state. 实时 <F min At that time, control the motor to pump oil, and control the amount of oil pumped by the motor to be within F. min -F 实时 ≤F 泵油 ≤F max -F 实时 Between; when F 实时 >F max At this time, the control motor reduces or stops pumping oil. Specifically, the pumping timing is when F is detected. 实时 <F min The timing for stopping the oil pump is when F is detected. 实时 >F max At that time, the pump oil volume is the oil volume corresponding to the real-time power and temperature calculated value and the preset power and temperature calculated value. When F is detected... 实时 <F min When the oil pumping operation is triggered, assuming that the target power temperature is calculated using 80% of the oil storage chamber capacity, the difference between the target oil quantity and the current oil quantity is the required oil pumping quantity.

[0044] Of course, the process from S1 to S4 will continue to cycle until the suction stops.

[0045] This precise oil supply control method employs a dual mechanism of motor parameter estimation and real-time monitoring to accurately determine the oil level. The temperature detection module 20 monitors the heating coil status in real time, responds quickly to changes in oil level, and dynamically adjusts the pumping timing and quantity strategy accordingly. This achieves precise oil supply control, keeping the real-time power and temperature calculation values ​​within a preset range and ensuring optimal atomization. Real-time monitoring and timely oil supply effectively prevent dry burning of the heating coil, extending the lifespan and safety of the e-cigarette. Precise oil supply control provides stable atomization, avoiding leaks and dry burning, significantly improving the user experience. Furthermore, intelligent control through software algorithms eliminates the need for complex mechanical structures, reducing production costs and improving system reliability.

[0046] Please see Figure 2 This application also provides a precision fuel supply control system, which uses the above-mentioned control method and specifically includes:

[0047] The oil pumping estimation module 10 collects the motor's speed, torque, and running time in real time, and estimates the amount of oil pumped by the motor.

[0048] Temperature detection module 20 detects the temperature of the heating coil in the electronic cigarette in real time;

[0049] The power output module 30 outputs the power required for the heating wire to atomize and records the real-time output power.

[0050] The oil level determination module 40 has a preset power-temperature calculation threshold range. It calculates a real-time power-temperature calculation value based on the real-time temperature of the heating element and the real-time output power. The module then compares this real-time power-temperature calculation value with the preset power-temperature calculation value to determine the oil level status.

[0051] The dynamic adjustment control module 50 controls the motor to pump oil, reduce oil pumping, or stop oil pumping based on the oil quantity status determined by the oil quantity judgment module 40.

[0052] This precise e-liquid supply control system accurately determines the e-liquid level through a dual mechanism of motor parameter estimation and real-time monitoring. The temperature detection module 20 monitors the heating coil status in real time, responds quickly to changes in e-liquid level, and dynamically adjusts the pumping timing and quantity strategy accordingly. This precise e-liquid supply control keeps the real-time power and temperature calculation values ​​within a preset range, ensuring optimal atomization. Real-time monitoring and timely e-liquid supply effectively prevent dry burning of the heating coil, extending the lifespan and safety of the e-cigarette. Precise e-liquid supply control provides stable atomization, avoids leakage and dry burning issues, and significantly improves the user experience. Furthermore, intelligent control through software algorithms eliminates the need for complex mechanical structures, reducing production costs and improving system reliability.

[0053] The temperature detection module 20 has a stable temperature coefficient value, and the detection accuracy of the temperature detection module 20 is ±1℃.

[0054] The temperature detection module 20 has a detection range of 0℃ to 300℃.

[0055] This application also provides an electronic cigarette that employs the aforementioned precise e-liquid supply control system. Through a dual mechanism of motor parameter estimation and real-time monitoring, it can accurately determine the e-liquid level. The temperature detection module 20 can monitor the heating coil status in real time, quickly respond to changes in e-liquid level, and dynamically adjust the pumping timing and pumping volume strategy to achieve precise e-liquid supply control. This ensures that the real-time power and temperature calculation values ​​remain within a preset range, guaranteeing optimal atomization. Real-time monitoring and timely e-liquid supply effectively prevent the heating coil from dry-burning, improving the electronic cigarette's lifespan and safety. Precise e-liquid supply control provides stable atomization, avoiding leakage and dry-burning issues, significantly enhancing the user experience. Furthermore, intelligent control through software algorithms eliminates the need for complex mechanical structures, reducing production costs and improving system reliability.

[0056] Specifically, the electronic cigarette contains a motor, a microcontroller unit, and sensors. The microcontroller unit controls the motor's speed and running time, and the sensors collect the motor's torque.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0058] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A precise oil supply control method applied to an electronic cigarette, characterized in that, Includes the following steps: Oil pumping volume estimation involves collecting motor parameters and estimating the oil pumping volume based on those parameters. Real-time monitoring detects the real-time temperature and output power of the electronic cigarette's heating coil; Oil level status is determined by calculating the real-time power-temperature value based on the real-time temperature of the heating wire and the real-time output power to determine the current oil level status. Dynamic adjustment: Based on the deviation between the real-time power and temperature calculation values ​​and the preset power and temperature calculation values, the timing and quantity of oil pumping are dynamically adjusted.

2. The precision oil supply control method according to claim 1, characterized by, The motor parameters include speed, torque, and running time. The pump oil volume is positively correlated with the motor parameters, and the estimated pump oil volume = K1nt + K2Tt + K3nTt + K0, where K1, K2, K3, and K0 are constants, n is the speed, T is the torque, and t is the running time.

3. The precision oil supply control method according to claim 2, characterized by, The calculated power-temperature value F is related to the ratio of power to temperature. When there is a lot of oil, the ratio of output power to real-time temperature is balanced; when there is a little oil, the ratio of output power to real-time temperature is smaller.

4. The precision oil supply control method according to claim 3, characterized by, The reasonable interval of the preset power temperature operation value is F min ≤ F ≤ F max When F 实时 > F max , it is judged that the oil amount is sufficient; when F 实时 < F min , it is judged that the oil amount is less; wherein, the F min is less than 30% of the oil storage cavity capacity, and the F max is greater than 80% of the oil storage cavity capacity.

5. The precise oil supply control method according to claim 4, characterized in that, F 实时 F min F max F min F 实时 F max F 实时 F min F min F 实时 F 泵油 F max F 实时 F 实时 F max F 6. A precision oil supply control system, characterized in that, The control method according to any one of claims 1 to 5 includes: The oil pumping estimation module collects the motor's speed, torque, and running time in real time, and estimates the amount of oil pumped by the motor. The temperature detection module monitors the temperature of the heating coil in the electronic cigarette in real time. The power output module outputs the power required for the heating wire to atomize and records the real-time output power. The oil level determination module has a preset power-temperature calculation threshold range. It calculates a real-time power-temperature calculation value based on the real-time temperature of the heating wire and the real-time output power. The oil level is determined by comparing this real-time power-temperature calculation value with the preset power-temperature calculation value. The dynamic adjustment control module controls the motor to pump oil, reduce oil pumping, or stop oil pumping based on the oil quantity status determined by the oil quantity judgment module.

7. The precision oil supply control system according to claim 6, characterized in that, The temperature detection module has a stable temperature coefficient value, and the detection accuracy of the temperature detection module is ±1℃.

8. The precision oil supply control system according to claim 7, characterized in that, The temperature detection module has a detection range of 0℃ to 300℃.

9. An electronic cigarette, characterized in that, The precision oil supply control system described in claim 6 is adopted.

10. The electronic cigarette according to claim 9, characterized in that, It includes a motor, a microcontroller unit, and a sensor. The microcontroller unit controls the speed and running time of the motor, and the sensor collects the torque of the motor.

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