Flexible Battery Watchband for Longer Smartwatch Runtime
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Solution Overview
Problem
Conventional smartwatches have limited usage time due to their small size, which restricts the capacity of the built-in battery.
Innovation Solution
A watchband for a smartwatch that includes a flexible battery embedded in a cover member, which provides additional power to the smartwatch, increasing its usage time without altering the smartwatch's design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the smartwatch is made in a small size to fit on the wrist, then it is wearable and comfortable, but the battery capacity is limited and usage time is short
Solution Approach 1:
The power supply system is segmented into two parts: a small battery in the smartwatch body for immediate use and a flexible battery in the watchband for extended power. This allows the main device to remain compact while the auxiliary power source is placed separately in the wearable band.
Solution Approach 2:
The power supply capacity is extended from two dimensions (length and width) to three dimensions by utilizing the watchband as an additional spatial dimension. The flexible battery is embedded in the band, effectively adding vertical depth to the power supply architecture without increasing the smartwatch body size.
2Duration of action of moving object
If a larger battery is built in the smartwatch body, then usage time is extended, but the device size increases and is no longer suitable for wrist wear
Solution Approach 1:
A portion of the power supply function is extracted from the smartwatch body and relocated to the watchband. The flexible battery in the band serves as an external power reservoir that can be detached or separated from the main device, allowing the body to remain compact.
Solution Approach 2:
The watchband acts as an intermediary component between the user's wrist and the power supply system. It houses the flexible battery and provides electrical connection to the smartwatch body through connection terminals, mediating the power transfer without requiring the battery to be inside the device body.
3Duration of action of moving object
If the flexible battery is embedded in the cover member, then additional power is provided without altering smartwatch design, but the structure becomes more complex
Solution Approach 1:
The watchband is given multiple functions: it serves as both the wearable band structure and the housing for the flexible battery. This multi-functionality reduces the need for separate components and simplifies the overall structure despite the added power supply capability.
Solution Approach 2:
The cover member and flexible battery are merged into a single integrated unit. The battery is embedded within the cover member structure, combining the protective housing and power supply into one component, thereby reducing structural complexity rather than increasing it.
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 flexible battery embedded in the watchband extends the usage time of the smartwatch by providing additional power, addressing the limitations of the small battery capacity due to size constraints.
Implementation Method 1
a flexible battery formed in a plate shape having a predetermined length and a predetermined area and embedded in the cover member
Implementation Method 2
the first exterior material and the second exterior material may be attached to each other through an adhesive layer disposed on one surface of each exterior material facing each other
Data Source
AI summary
A watchband for a smart watch is provided. The watchband for a smart watch includes: a first band having at least one positioning hole; and a second band including a cover member, a flexible battery, and a position-fixing fastening member, wherein an exterior material of the flexible battery can include a first portion for packing the electrode assembly together with the electrolyte, and a second portion extended from the first portion by a predetermined and to which the position-fixing fastening member is coupled.