Electronic Cigarette Driving Circuit for Stable TPM Output
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Solution Overview
Problem
Traditional electronic cigarettes have high costs and large sizes, and they fail to maintain a stable Total Particulate Matter (TPM) value due to varying output voltage and heating power.
Innovation Solution
A driving method and assembly for electronic cigarettes that calculate and adjust a duty ratio based on detected output voltage and effective resistance to ensure the heating assembly operates at a preset power, using a master control circuit, output power control circuit, and resistance detection circuit to stabilize TPM output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional electronic cigarette designs are used, then the device can be manufactured, but the cost is high and the size is large
Solution Approach 1:
The patent merges the voltage detection function and power control function into a single integrated control circuit. The control circuit directly detects the output voltage of the power supply and adjusts the heating assembly's power consumption accordingly, eliminating the need for separate voltage detection modules and complex power management structures found in traditional designs.
Solution Approach 2:
The control circuit automatically detects voltage changes and self-adjusts the duty ratio of the heating assembly without requiring external intervention or complex feedback mechanisms. The system uses the detected voltage directly to calculate and control the power output, making the device self-regulating and reducing overall system complexity.
2Reliability
If traditional power management is used, then the device can operate, but the TPM value is unstable due to voltage changes
Solution Approach 1:
The control circuit continuously detects the output voltage of the power supply and uses this feedback information to dynamically adjust the duty ratio of the heating assembly. When voltage increases, the circuit reduces duty ratio to maintain stable power output and stable TPM values; when voltage decreases, it increases duty ratio accordingly.
Solution Approach 2:
The system changes the duty ratio parameter of the heating assembly based on detected voltage parameters. By dynamically adjusting this control parameter in response to voltage fluctuations, the system maintains constant power output and stable TPM values without requiring complex hardware modifications.
3Power
If voltage detection and power control are separated into different circuits, then each circuit can be optimized, but the device size increases
Solution Approach 1:
The patent combines voltage detection and power control functions into a single integrated control circuit that performs both operations. The control circuit includes voltage detection capabilities and directly uses this information to control the heating assembly's power consumption, eliminating the need for separate detection and control modules.
Solution Approach 2:
The control circuit is designed to perform multiple functions: it detects voltage, calculates the appropriate duty ratio, and controls the heating assembly's power output all within a single circuit. This multi-functional design reduces the overall device size while maintaining precise power control capabilities.
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
This approach reduces the cost and size of electronic cigarettes while maintaining a stable TPM value by ensuring consistent heating power, enhancing user experience and efficiency.
Implementation Method 1
a heating assembly, the driving assembly being configured for driving the heating assembly to heat liquid or tobacco so as to generate an aerosol
Data Source
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AI summary
The present disclosure provides a driving method, a driving assembly, and an electronic cigarette having the same. The driving method includes: acquiring an output voltage of a power supply of the electronic cigarette (S101); calculating a duty ratio meeting a preset power using the detected output voltage and an effective resistance of a heating assembly (S102); and driving a current circuit of the heating assembly of the electronic cigarette to switch on or switch off according to the duty ratio, so that the heating assembly operates under the preset power (S103). According to the present disclosure, the cost of the electronic cigarette can be lowered, a relatively stable TPM (Total Particulate Matter) value can be output, and the size of the electronic cigarette can be reduced.