Dual-Battery Aerosol Generator for Low-Temperature Battery Heating
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Solution Overview
Problem
Lithium ion batteries used in aerosol-generating devices experience reduced capacity and voltage at low temperatures, leading to degraded performance and potential irreversible damage when charged, making it challenging to maintain effective operation and longevity.
Innovation Solution
Incorporating a dual power source system where a second power source, optimized for rapid heating, is used to heat the primary power source, ensuring operation within a wide temperature range, and allowing for faster heating and increased battery capacity, with the second power source being removably coupled to the heating circuit for disposable use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single lithium ion battery is used as the power source, then the device structure is simple, but the battery capacity and voltage are reduced at low temperatures, leading to degraded performance
Solution Approach 1:
The power source system is divided into two separate batteries: a first battery optimized for energy storage and a second battery optimized for rapid heating. This segmentation allows each battery to be designed with specific characteristics that address different operational requirements, particularly for low-temperature performance.
Solution Approach 2:
The second battery is used to preheat the first battery before the device is operated. This preliminary heating action ensures that the first battery reaches its optimal operating temperature range before it is called upon to provide power, preventing performance degradation due to cold temperature.
2Loss of time
If the first power source is heated quickly to improve low-temperature operation, then the heating time is reduced, but the energy consumption increases
Solution Approach 1:
The heating function is separated from the main power source. A dedicated second battery is assigned specifically for heating the first battery, allowing the first battery to focus on energy storage while the second battery provides rapid heating capability when needed.
Solution Approach 2:
The second battery is designed as a sacrificial, disposable component that can be quickly depleted during heating operations. This allows the system to use high-power, short-duration heating without worrying about the long-term energy constraints, as the second battery can be replaced or recharged independently.
3Adaptability or versatility
If a second power source is added to enable rapid heating and extended operation, then the operational capacity and temperature range are improved, but the device complexity increases
Solution Approach 1:
The second battery serves multiple functions: it acts as a heater for the first battery, provides supplemental power during operation, and can be quickly replaced or recharged. This multi-functionality justifies the added complexity by providing versatile capabilities that enhance overall system performance.
Solution Approach 2:
The system allows for different operational modes by changing which battery is active. The controller can switch between using only the first battery, only the second battery, or both in combination, adapting to different temperature conditions and power requirements to optimize performance.
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 configuration enhances the operational longevity and capacity of the primary power source at low temperatures, enabling faster heating of the aerosol-generating substrate and maintaining predictable performance by using the second power source to bring the primary power source up to temperature quickly.
Implementation Method 1
a heating circuit configured to receive power from the first power source to heat the second power source in response to a temperature of the first power source or the second power source being below a first temperature threshold
Implementation Method 2
an aerosolizer operably coupled to the first power source and configured to generate aerosol from an aerosol-generating substrate in response the temperature exceeding a second temperature threshold
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An aerosol-generating device (100) comprises a first power source (120), an aerosolizer (110) configured to receive power from the first power source and configured to generate aerosol from an aerosol- generating substrate (170), a second power source (130), and a heating circuit (160) configured to receive power from the second power source to heat the first power source.