Multi-Mode Controller for Electronic Cigarette Coil Protection
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Solution Overview
Problem
Electronic cigarettes with constant voltage output modes fail to provide optimal user experience due to issues like dry-burn effects, reduced vapor flow, and inability to detect coil resistance, limiting user control over vaping experience.
Innovation Solution
A method and system for controlling electronic cigarettes with multiple output modes, allowing users to select between voltage and power output modes, which includes a controller that switches between modes based on user input, adjusts output voltage based on coil resistance, and indicates current mode with LEDs, ensuring consistent airflow and preventing short-circuit effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If constant voltage output mode is used, then output voltage stability is improved, but user experience and vapor flow control are worsened
Solution Approach 1:
The electronic cigarette system dynamically switches between constant voltage output mode and constant power output mode based on user selections and operating conditions. The controller adjusts output parameters in real-time, transitioning from a static constant voltage approach to a dynamic multi-mode system that adapts to different user preferences and coil states, thereby improving both voltage stability when needed and user experience adaptability when required.
Solution Approach 2:
The system changes output parameters by implementing multiple output modes (constant voltage and constant power) with adjustable voltage and power levels. Users can select different voltage values (e.g., 3.3V, 4.0V, 4.2V) or power values (e.g., 3W, 5W, 7W, 10W), allowing the controller to adjust output characteristics to match user preferences and coil resistance conditions, thus resolving the contradiction between stability and adaptability.
2Temperature
If high output voltage is used, then vapor flow temperature is improved, but coil dry-burn effect occurs
Solution Approach 1:
The system implements feedback control by detecting coil resistance and using it to determine appropriate output modes and parameters. The controller monitors coil state through resistance measurements and adjusts voltage or power output accordingly, preventing high voltage from causing dry-burn effects while still achieving desirable vapor temperatures through controlled power delivery.
Solution Approach 2:
The system performs preliminary detection of coil resistance before initiating heating. Based on the detected resistance value, the controller pre-determines the appropriate output mode and parameters, preventing harmful dry-burn conditions before they occur by avoiding excessively high voltage application to coils that cannot handle it.
3Reliability
If low output voltage is used, then coil safety is improved, but vapor flow amount is reduced
Solution Approach 1:
The system changes from fixed voltage parameters to variable power parameters. By allowing users to select from multiple power levels (3W, 5W, 7W, 10W), the system can maintain coil safety through controlled power delivery while compensating for lower voltage by adjusting power parameters to ensure sufficient vapor generation, thus resolving the contradiction between safety and vapor quantity.
4Device complexity
If constant voltage mode is used, then system simplicity is improved, but coil resistance detection capability is worsened
Solution Approach 1:
The controller is designed with multi-functionality, serving both as a constant voltage regulator and a constant power controller with coil resistance detection capabilities. By integrating multiple functions into a single control unit, the system maintains relative simplicity while gaining the ability to detect coil resistance and adapt output parameters accordingly, eliminating the need for separate detection circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to choose desired output modes, improving vaping experience by maintaining constant airflow and preventing coil damage, thus enhancing user satisfaction and device quality.
Implementation Method 1
a coil which is configured to heat the liquid solution
Implementation Method 2
the first controller controls one of the two LEDs to emit light to indicate a current output mode
Data Source
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Figure 2
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AI summary
The present disclosure provides a method for controlling an electronic cigarette with multiple output modes comprises following steps: step 1, determining by a first controller whether button signals are input for N times when a system is powered on; step 2, controlling the system to enter a locked state if a determination result of step 1 is yes; step 3, determining by the first controller whether a switch signal for switching between the output modes is input to the first controller via a button under the locked state, the output modes comprising a voltage output mode and a power output mode which can be stored in a memory of the first controller; step 4, switching from a current output mode to a new output mode and storing the new output mode in the memory by the first controller if a determination result of step 3 is yes, and controlling outputs by the first controller according to the stored output mode in step 4 after a user unlocks the system and the first controller receives a smoking signal. The user can select a desired voltage output mode or a power output mode according to need, to satisfy the need during smoking.