Aerosol Heater Charging Interlock to Prevent Battery Overheating
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Solution Overview
Problem
Conventional aerosol-generating systems face issues with battery damage due to high temperatures during charging and use, which can lead to safety hazards for the user.
Innovation Solution
An aerosol-generating system equipped with a control unit that detects when the battery is charging and prevents heater operation or battery charging during use, ensuring safe operation by preventing simultaneous charging and puffing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the battery is charged during heater operation, then the charging function is improved, but the battery temperature increases leading to internal damage and short circuits
Solution Approach 1:
The control unit prevents heater operation before charging can cause battery damage by detecting charging state and blocking heater activation. This preemptive measure stops the harmful thermal accumulation before it occurs, addressing the contradiction by eliminating the conflicting operation rather than managing its effects.
Solution Approach 2:
The control unit acts as an intermediary between the charging system and heater, managing their interaction by detecting charging state and controlling heater activation. This mediator prevents direct conflict between charging and heating operations that would otherwise cause dangerous temperature accumulation.
2Productivity
If the heater is operated during battery charging, then the aerosol generation function is improved, but the battery may be burned or cause sudden increase of internal pressure
Solution Approach 1:
The control unit preemptively prevents heater operation when charging is detected, blocking the harmful combination of heating and charging before it can compromise battery reliability. This ensures battery safety is maintained while allowing aerosol generation to resume after charging completes.
3Reliability
If the control unit prevents charging during heater operation, then the battery safety is improved, but the charging time increases
Solution Approach 1:
The system implements periodic checking of charging state and heater operation status, allowing charging to proceed in periods when heater is not active. This periodic control enables the system to alternate between charging and heating operations, maintaining battery safety while progressively completing the charging function over time.
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 battery damage and user discomfort by ensuring the battery is not charged or used simultaneously, thereby reducing the risk of thermal runaway and internal damage.
Implementation Method 1
an electric heater for vaporizing an aerosol-forming substance
Implementation Method 2
a battery for powering the electric heater
Data Source
Figure 1
Figure 2
AI summary
The invention relates to an aerosol-generating system for generating an inhalable aerosol. The system comprises an electric heater (4) for vaporizing an aerosol-forming substance and a battery (3) for powering the electric heater. The system further comprises a device portion comprising the battery and a replaceable cartridge (7) for receiving the aerosol-forming substance, and a control unit (2) configured to detect if the replaceable cartridge is connected to the device portion, wherein the control unit is further configured to prevent charging of the battery, when the control unit detects that the replaceable cartridge is connected to the device portion.