Atomizer Power Limiting to Prevent E-Cigarette Dry Burning

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Solution Overview

Problem

Electronic cigarette atomizers are prone to dry burning when operating at high power, leading to reduced service life and compromised smoking experience.

Innovation Solution

A control method that determines the maximum output power of the atomizer and adjusts the target power to prevent dry burning by controlling the atomizer to output at or below this maximum power, accompanied by a reminder message to users when high power settings are detected.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the atomizer outputs large power to generate large smoke, then the smoke generation is improved, but the atomizer is prone to dry burning

Engineering Contradiction:
Improvesmoke generationVSAvoidatomizer dry burning
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The patent implements a feedback control mechanism where the control unit continuously monitors the output power of the atomizer and compares it against a pre-stored maximum power value. When the detected power exceeds the maximum threshold, the system automatically adjusts the power output to prevent dry burning, thus resolving the contradiction between high smoke generation and atomizer reliability

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes the power output parameter dynamically based on operational conditions. By storing maximum power values corresponding to different working conditions and switching between them, the system maintains optimal smoke generation while preventing the atomizer from operating beyond safe power limits that would cause dry burning

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If the atomizer outputs large power, then the smoking experience is improved, but the service life of the atomizer is reduced

Engineering Contradiction:
Improvesmoke outputVSAvoidatomizer service life
Core Design Contradiction:
Quantity of substanceVSDuration of action of stationary object

Solution Approach 1:

The patent applies preliminary action by pre-storing maximum power values corresponding to different working conditions in the control unit before operation begins. This pre-prepared data allows the system to immediately adjust power output to safe levels when conditions change, preventing cumulative damage that would reduce atomizer service life while still allowing high smoke output during appropriate conditions

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The continuous feedback mechanism monitors actual power output and compares it with pre-stored maximum values, automatically adjusting the power delivery to extend atomizer life while maintaining satisfactory smoke output during normal operation

Inventive Principle:
Principle #23Feedback

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

Prevents dry burning, extends the life of the atomizer, and maintains the smoking experience by ensuring the atomizer operates within safe power limits.

Implementation Method 1

the internal atomizer to generate smoke

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Data Source

PatentEP3729983B1Control method and device, and electronic cigarette
Publication Date: 2025.01.08 JOYETECH EUROPE HOLDING GMBH
  • EP3729983B1 patent drawingFigure 1~2

AI summary

A control method and device, and an electronic cigarette. The method comprises: obtaining the maximum output power during the secure output of an atomizer connected to a body (110); detecting whether the currently-set target power of the atomizer is higher than the maximum output power (120); and if the target power is higher than the maximum output power, executing a preset operation, the preset operation comprising at least one of controlling, according to a cigarette lighting signal, the atomizer to output at power lower than or equal to the maximum output power and displaying a first reminder message (130). The method resolves the problem that dry burning would easily occur in an atomizer, and has the function of protecting the atomizer and preventing the shortening of the life of a heating component caused by the burning of the heating component due to high power output of the atomizer.