Inductive Heater Voltage Conversion for Battery Chemistry Compatibility
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Solution Overview
Problem
Aerosol-generating devices with inductive heating systems face challenges in compatibility with different lithium ion battery chemistries, leading to manufacturing complexity and potential undesirable behavior due to varying supply voltages, which affects the operation of heater modules.
Innovation Solution
Incorporating a DC/DC voltage converter that converts the output voltage from different lithium ion battery chemistries to a constant input voltage for the heater module, allowing the same module to operate across various devices and ensuring stable power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If different lithium ion battery chemistries are used to power aerosol-generating devices, then energy density and operating time can be optimized, but supply voltage varies causing incompatibility with heater modules designed for specific voltages
Solution Approach 1:
A DC-DC voltage converter is introduced as an intermediary component between the battery power supply and the heater module. This converter receives varying DC voltages from different battery chemistries (e.g., 3.7V Li-ion, 3.2V LiFePO4, 4.2V NMC) and converts them to a standardized voltage (e.g., 5V) that the heater module can accept, enabling universal compatibility across different battery types while maintaining high energy density options.
Solution Approach 2:
The system dynamically adjusts the voltage parameter by using a DC-DC converter that can handle input voltages within a range (e.g., 2.5V to 4.2V) and transforms them to a fixed output voltage. This parameter transformation allows the heater module to operate consistently regardless of which battery chemistry is used, resolving the voltage compatibility issue while preserving the energy density benefits of different battery chemistries.
2Reliability
If heater modules are designed for specific supply voltages to ensure stable operation, then operational reliability is improved, but manufacturing complexity increases due to needing different modules for different battery chemistries
Solution Approach 1:
The DC-DC voltage converter enables a single heater module design to serve multiple functions by accepting power from various battery chemistries. Instead of creating specialized heater modules for each battery type (which would increase device complexity), the universal converter allows one standardized heater module to work reliably with any battery, reducing manufacturing complexity while maintaining operational stability through consistent voltage supply.
3Adaptability or versatility
If DC-DC voltage conversion is implemented to enable compatibility with different battery chemistries, then adaptability is improved, but device complexity increases due to additional conversion circuitry
Solution Approach 1:
The DC-DC voltage conversion functionality is merged with the existing power management circuitry of the aerosol-generating device. Rather than adding a completely separate conversion system that would significantly increase complexity, the voltage conversion is integrated into the power supply architecture, sharing components and control logic with existing circuits. This approach achieves broad battery compatibility while minimizing the increase in overall device complexity.
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 DC/DC voltage converter enables the same heater module to function with different battery chemistries, reducing manufacturing complexity and ensuring consistent operation by providing a constant input voltage, thus improving the stability and versatility of the inductive heating device.
Implementation Method 1
The inductor generates a varying magnetic field to generate eddy currents and hysteresis losses in the susceptor
Implementation Method 2
The inductor generates a varying magnetic field to generate eddy currents and hysteresis losses in the susceptor
Implementation Method 3
The inductor generates a varying magnetic field to generate eddy currents and hysteresis losses in the susceptor
Implementation Method 4
inductive heating devices typically comprise an inductor such as an induction coil which is arranged to be inductively coupled to a conductive susceptor
Data Source
AI summary
An inductive heating system is provided, including: a first inductive heating device including a first DC power supply configured to provide a first DC supply voltage, and a first heater module including an inductor configured to provide inductive heating, the first heater module having a first heater module input voltage that is substantially equal to the first DC supply voltage; and a second inductive heating device including a second DC power supply configured to provide a second DC supply voltage that is different from the first DC supply voltage, a second heater module including an inductor configured to provide inductive heating, the heater module having the first heater module input voltage, and a DC/DC voltage converter configured to convert the second DC supply voltage to the first heater module input voltage.