Battery Temperature Feedback for Aerosol Heater Voltage Control
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Solution Overview
Problem
Aerosol-generating devices face challenges in preventing excessive current flow through batteries based on temperature and providing users with information about heating delays.
Innovation Solution
Incorporating a temperature sensor, voltage conversion circuit, and controller to adjust the voltage level based on battery temperature, and using a light-emitting device to indicate heating delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the battery outputs high voltage to power the heater, then the heating performance is improved, but excessive current may flow through the battery causing safety issues
Solution Approach 1:
The voltage conversion circuit dynamically adjusts the voltage level based on real-time battery temperature feedback. When the battery temperature is within the normal range, the circuit outputs higher voltage to maintain good heating performance. When the battery temperature exceeds the threshold, the circuit automatically reduces the voltage to prevent excessive current flow, thus resolving the contradiction between heating power and battery safety.
Solution Approach 2:
The temperature sensor continuously monitors the battery temperature and feeds this information back to the controller. The controller then adjusts the voltage conversion circuit accordingly, creating a closed-loop feedback system that automatically balances heating performance with battery safety by modulating the voltage output based on temperature conditions.
2Reliability
If the controller reduces voltage to protect the battery, then battery safety is improved, but the heating speed decreases causing user inconvenience
Solution Approach 1:
The temperature sensor performs preliminary monitoring of the battery temperature before the heating operation begins. If the battery temperature is already elevated, the voltage conversion circuit proactively adjusts to an appropriate voltage level in advance, preventing excessive current flow before it can cause safety issues while still maintaining adequate heating speed.
Solution Approach 2:
The system changes the voltage parameter dynamically based on battery temperature conditions. By adjusting the voltage level to match the battery's thermal state, the system maintains optimal heating speed when safe while preventing safety issues, thus resolving the contradiction between battery safety and heating speed.
3Reliability
If the device provides real-time temperature monitoring, then battery safety control is improved, but the device complexity increases
Solution Approach 1:
The temperature sensor serves multiple functions: it monitors battery temperature for safety control, provides feedback for voltage adjustment, and can indicate heating status to the user. By making the temperature monitoring system multi-functional, the device achieves improved battery safety control without proportionally increasing complexity, as the same hardware component performs multiple tasks.
Solution Approach 2:
The voltage conversion circuit acts as an intermediary between the battery and the heater. It receives temperature feedback from the sensor and automatically adjusts the voltage output accordingly, eliminating the need for complex control logic in the main controller and simplifying the overall system while maintaining reliable safety control.
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 excessive current flow and informs users about heating delays, ensuring safe and efficient battery operation.
Implementation Method 1
a temperature sensor configured to output a signal corresponding to the temperature of the battery
Implementation Method 2
a voltage conversion circuit configured to convert a first voltage output from the battery
Implementation Method 3
a heater configured to heat an aerosol-generating substance based on a second voltage output from the voltage conversion circuit
Data Source
AI summary
An aerosol-generating device is disclosed. The aerosol-generating device of the disclosure includes a battery, a temperature sensor configured to provide an output corresponding to the temperature of the battery, a voltage conversion circuit configured to convert a first voltage output from the battery, a heater configured to heat an aerosol-generating substance based on a second voltage output from the voltage conversion circuit, and a controller configured to determine the temperature of the battery using the temperature sensor. The controller adjusts the level of the second voltage based on the temperature of the battery.