Flexible PCB Battery Securing Mechanism
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Solution Overview
Problem
Existing methods for securing coin-shaped cell batteries to printed circuit boards (PCBs) lack a flexible and efficient mechanism for both mechanical and electrical coupling, particularly in small battery-powered devices where space and connectivity are critical.
Innovation Solution
The use of a flexible PCB with mechanical coupling apparatuses, such as adhesive, clips, tabs, or metalized film, that can adjust to different positions to securely hold and electrically connect the battery to the PCB, allowing for flexible positioning and secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid metal holder with clamps is used to secure the battery, then mechanical stability is improved, but flexibility and adaptability to different positions are worsened
Solution Approach 1:
The patent employs a flexible PCB (printed circuit board) that can bend and deform to accommodate different battery positions and orientations. This flexible substrate replaces rigid metal holders while maintaining electrical connectivity through conductive traces that flex with the board, enabling both mechanical adaptability and electrical functionality in compact device designs
2Strength
If a rigid metal holder with clamps is used to secure the battery, then mechanical coupling is improved, but device complexity and space requirements are worsened
Solution Approach 1:
The patent integrates mechanical coupling and electrical connectivity into a single unified structure. The flexible PCB simultaneously provides structural support for battery mounting, electrical conductive paths, and mechanical retention through its flexible nature, eliminating the need for separate rigid holders, clamps, and wiring assemblies that would increase device complexity
Solution Approach 2:
The flexible PCB serves multiple functions simultaneously: it acts as the structural substrate, provides electrical connections through embedded conductive traces, enables mechanical battery retention through its flexible deformation capabilities, and accommodates various battery configurations. This multi-functionality replaces complex dedicated components for each function
3Adaptability or versatility
If a flexible PCB is used to accommodate different positions, then adaptability is improved, but mechanical strength and stability are worsened
Solution Approach 1:
The flexible PCB utilizes a thin-film construction with a flexible substrate that can bend and deform to accommodate different battery positions. The flexible nature of the substrate allows it to adapt to various configurations while maintaining sufficient mechanical strength through its engineered structure and material properties
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 solution provides a reliable and adaptable means of securing batteries to PCBs, ensuring both mechanical stability and electrical connectivity, even in compact devices, while allowing for flexible PCB configurations to accommodate various device designs.
Implementation Method 1
mechanical coupling apparatuses, such as adhesive, clips, tabs, or metalized film
Data Source
AI summary
A device includes a flexible printed circuit board (PCB) that includes a first battery connection, a second battery connection, and a mechanical coupling apparatus. The first battery connection is for providing a first electrical connection to a first terminal of a battery. The second battery connection is for providing a second electrical connection to a second terminal of the battery. When the flexible PCB is in a first flex position, the first and second battery connections are at a distance where at least one of the first battery connection and the second battery connection is not electrically coupled to the respective one of the first and second terminals of the battery. When the flexible PCB is in a second flex position, the battery is electrically coupled to the first and second battery terminals and is mechanically held in place by the mechanical coupling apparatus.