H-Bridge Aerosol Generator Circuit for Multi-Coil PCB Reduction
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Solution Overview
Problem
Conventional aerosol generators require separate driver arrangements for each induction element, leading to a large PCB footprint and high energy consumption, which is undesirable for compact and efficient aerosol provision devices.
Innovation Solution
A single H-bridge driver arrangement is used to supply alternating current to multiple induction elements, combined with a switch element, reducing the PCB footprint and energy requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate driver arrangements are used for each induction element, then reliable aerosol generation is achieved, but the PCB footprint becomes large and device size increases
Solution Approach 1:
The patent merges multiple driver arrangements into a single integrated driver circuit that can control multiple induction elements. The driver arrangement includes a bridge circuit with switching elements that can be configured to drive either the first or second induction element, eliminating the need for separate driver circuits for each element and reducing PCB footprint.
Solution Approach 2:
The driver arrangement is designed with multi-functionality to control multiple induction elements using the same circuitry. The switching elements can be selectively activated to direct power to different induction elements, allowing one driver arrangement to perform the functions of multiple separate drivers while maintaining reliable aerosol generation.
2Power
If separate driver arrangements are used for each induction element, then adequate power supply is ensured, but energy consumption increases and battery life decreases
Solution Approach 1:
The patent combines multiple driver arrangements into a single energy-efficient circuit that shares common components such as the bridge circuit and switching elements. This merging reduces redundant power consumption and improves overall energy efficiency while maintaining adequate power delivery to the induction elements.
Solution Approach 2:
The driver arrangement incorporates energy recovery mechanisms where energy stored in the magnetic field of one induction element can be recovered and reused when switching to another induction element. The switching circuitry is designed to minimize energy loss during transitions and to recover reactive power, thereby reducing total energy consumption and extending battery life.
3Area of stationary object
If a single H-bridge driver arrangement is used for multiple induction elements, then PCB footprint is reduced and device compactness is improved, but circuit complexity increases
Solution Approach 1:
The driver arrangement is segmented into modular functional blocks including a bridge circuit with switching elements that can be independently controlled. This segmentation allows for systematic design and control while reducing overall complexity compared to multiple separate driver circuits. Each switching element can be controlled by dedicated control signals, simplifying the control architecture.
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 enables a more compact aerosol provision device with extended battery life and the ability to perform more sessions before recharging, while maintaining efficient aerosol generation.
Implementation Method 1
an H-bridge configuration is an arrangement wherein a DC voltage from a DC battery is applied to the terminals of an induction element in a manner in which the direction of flow of the DC current is repeatedly reversed. As a result, an alternating current is applied to the terminals of the induction element.
Implementation Method 2
heat not burn products or tobacco heating devices or products, which release compounds by heating, but not burning, material
Implementation Method 3
an aerosol generator comprising two induction coils
Data Source
AI summary
An electronic circuit for an aerosol generator of an aerosol provision device including a driver arrangement arranged in a H-bridge configuration for supplying an alternating current to an aerosol generator having one or more first induction elements and one or more second induction elements; and a switch element arranged to switch the alternating current supplied by the driver arrangement to either the one or more first induction elements or the one or more second induction elements.