Foldable Charging Card Holder With Surface Battery Layout
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Solution Overview
Problem
Traditional handheld wallets with charging functions are bulky due to the integration of a power supply and charger cable, compromising portability.
Innovation Solution
A small-volume charging card holder design featuring a foldable structure with the energy storage power supply mounted on the surface of one wallet, allowing the charger cable to be housed within the bendable portion, reducing overall volume and enhancing portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the power supply and charger cable are integrated in a sandwich layer, then the charging function is provided, but the card holder volume increases
Solution Approach 1:
The power supply is relocated from the traditional sandwich layer (internal dimension) to the surface of the card holder (external dimension). This dimensional transition allows the charging cable to be accommodated within the foldable structure without increasing the card holder's overall volume, while still providing the charging function.
Solution Approach 2:
The charging cable is nested within the foldable portion of the card holder. When the card holder is folded, the cable is contained within the structure; when unfolded, the cable can be accessed for charging. This nesting approach eliminates the need for external cable storage that would increase volume.
2Power
If the power supply capacity is increased, then the charging capability is improved, but the volume of the card holder increases
Solution Approach 1:
By placing the power supply on the surface rather than within the sandwich layer, the design decouples the power supply capacity from the card holder's internal volume constraints. This allows for a larger capacity power supply without proportionally increasing the overall card holder volume, as the power supply utilizes the surface area rather than internal space.
Data Source
AI summary
A small-volume charging holder includes a first wallet, a second wallet and a bendable portion which connects the first wallet with the second wallet so that the first wallet can be folded or unfolded relative to the second wallet. The second wallet is provided with at least one card slot for storing cards. The first wallet has a first surface, which is opposite to the second wallet when the first wallet is folded towards the second wallet. The first surface of the first wallet is provided with an energy storage power supply, which is configured to charge external devices.