Capacitive Touch Battery for E-Cigarette Accidental Activation
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Solution Overview
Problem
Electronic cigarettes with mechanical keys often become disabled or stuck after long-term use, posing safety issues due to accidental activation when carried in clothes, requiring a more reliable and convenient operation method.
Innovation Solution
A touch battery system utilizing capacitive touch technology, featuring a capacitive touch member, PCBA control panel, and LED indicators, allowing the device to be activated by lightly touching the bottom with a finger, preventing accidental activation by clothes and enhancing user experience with multiple selection options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical keys are used for operation, then the device can be activated, but the keys become disabled or stuck after long-term use and may cause accidental activation
Solution Approach 1:
The patent replaces the mechanical key system with a capacitive touch sensing system. The touch sensing area detects human touch through capacitance changes rather than mechanical pressure, eliminating wear and sticking issues while maintaining activation functionality. This substitution directly resolves the reliability problem of mechanical keys becoming disabled or stuck after long-term use.
2Area of stationary object
If the touch area is made small to fit the electronic cigarette structure, then the device size is reduced, but the touch detection precision becomes difficult to achieve
Solution Approach 1:
The patent transitions from point-based key detection to area-based capacitive touch detection. By distributing multiple sensing points across a touch area and detecting capacitance changes at each point, the system achieves precise touch detection even on small surfaces. The control circuit can identify specific touch locations within the area, maintaining precision while enabling a compact form factor.
3Reliability
If capacitive touch technology is implemented, then accidental activation is prevented, but the device complexity increases due to additional control circuits
Solution Approach 1:
The patent integrates the capacitive touch control circuit with the existing power supply control circuitry. The touch sensing circuit shares power supply voltage and control resources with other device functions, reducing the overall complexity increase. The control circuit monitors capacitance changes and triggers power supply activation in a unified control architecture, minimizing additional components while achieving accidental activation prevention.
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
The touch battery system provides a safe and convenient operation by ensuring the electronic cigarette only activates with human touch, extending the service life and meeting consumer demands for reliability and convenience, as it can be easily carried and used without the risk of accidental activation.
Implementation Method 1
Capacitive touch technology refers to that touch detection is performed in a number of lattice points intersected horizontally and vertically and then charge levels at contact points are detected, so that it is determined whether a finger touches a sensing surface by monitoring the small change in capacitance
Implementation Method 2
If a finger of a person approaches to this point, the electric field lines of a part of mutual capacitance will be absorbed because the human body may be equivalent to a potential; equivalently, the mutual capacitance is reduced
Data Source
AI summary
A touch battery has a short contact member, an insulating ring, an intermediate threaded connector, a PCBA control panel, a touch member, a tail membrane, a battery pole having a battery provided therein, and a tobacco rod. The battery supplies input power for the PCBA control panel. The PCBA control panel is electrically connected to the short contact member and the touch member, respectively. The battery pole is disposed in the tobacco rod. The tobacco rod is connected to the short contact member via the intermediate threaded connector. The short contact member is disposed inside the intermediate threaded connector via the insulating ring. The tail membrane is connected to the touch member. The battery is allowed to output normally in a constant-voltage touch manner, so that the conventional manual output with keys is avoided, and the demands of consumers for multiple selections are met.