Aerosol Battery Module Layout Using End-Face Flexible PCB
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Solution Overview
Problem
Existing aerosol generating systems, such as e-cigarettes, face challenges in spatial optimization of the battery module, particularly in terms of longitudinal space and optimal component positioning, which affects the device's compactness and portability.
Innovation Solution
The battery module incorporates a flexible printed circuit that extends over both sides and ends of the battery, with a microprocessor on one side and a pressure sensor on an end face, allowing for a compact and efficient arrangement of components, along with stiffening plates for mechanical reinforcement and heat insulation, and a ferromagnetic sheet for magnetic charging, utilizing plate spring contacts for connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a rigid or flexible printed circuit board is used to optimize the shape of the aerosol generating system, then the device compactness is improved, but the longitudinal space optimization of the battery module is not fully resolved
Solution Approach 1:
The flexible printed circuit board is bent to extend over the end face of the battery, transitioning from a planar side-wall configuration to a three-dimensional configuration that utilizes the end face dimension. This allows components to be positioned on the end face without increasing longitudinal length, resolving the space optimization problem while maintaining compactness.
Solution Approach 2:
The flexible printed circuit board provides dynamic adaptability in component positioning. By bending the circuit board to extend over the end face, the system can optimally position components (microprocessor on side wall, pressure sensor on end face) without being constrained by a rigid planar layout, thus simplifying component positioning while maintaining compactness.
2Use of energy by moving object
If electronic components are positioned on the battery module to achieve sufficient battery capacity, then the battery capacity is improved, but the spatial optimization of the battery module deteriorates
Solution Approach 1:
The flexible printed circuit board is configured to extend over the end face of the battery, utilizing the end face area for component placement. This three-dimensional configuration allows electronic components to be positioned without increasing the longitudinal length or overall volume of the battery module, thus maintaining compactness while accommodating necessary components for sufficient battery capacity.
Solution Approach 2:
The battery module is segmented into functional zones: the side wall area hosts the microprocessor and main control components, while the end face area hosts the pressure sensor and charging contacts. This segmentation allows efficient space utilization, enabling sufficient battery capacity in the longitudinal direction while optimizing transverse space for electronic components.
Data Source
AI summary
The invention relates to a battery module for an aerosol generating system. It comprises a battery extending substantially in a longitudinal direction and a printed circuit board assembly connected to the battery. The battery comprises along the longitudinal direction a first portion of a first thickness, and a second portion comprising opposite faces defining a second thickness, the second thickness being less than the first thickness. The printed circuit board assembly is electrically connected to the second portion of the battery on one of said opposite faces. This allows spatial optimization of the battery module. The invention also relates to a corresponding aerosol generating system, and to a corresponding set comprising a battery charger.