Transformable Secondary Battery Layout for Wearable Weight Balance
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Solution Overview
Problem
Portable and wearable electronic devices face challenges in incorporating high-capacity secondary batteries due to size and weight constraints, requiring innovative solutions for efficient placement and weight balance, especially in devices with complex shapes that need to fit individual body contours.
Innovation Solution
A transformable secondary battery design that can be elongated and bent, allowing efficient placement in narrow spaces and adjustable weight distribution, integrated into electronic devices such as glasses-type devices, headset-type devices, and armband devices, using flexible materials and specific electrode structures to maintain performance and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If high-capacity secondary batteries are incorporated to extend usage period, then duration of action is improved, but device weight and size increase
Solution Approach 1:
The secondary battery is divided into multiple battery elements arranged in series. This segmentation allows the total battery capacity to be distributed across multiple smaller units, enabling flexible spatial arrangement within the device while achieving the required total capacity for extended usage period.
Solution Approach 2:
The battery elements are arranged in a folded or bent configuration rather than a straight linear arrangement. This dimensional transformation allows the battery to fit within the limited three-dimensional space of the device while maintaining the required total length for high capacity, effectively utilizing space in multiple dimensions.
2Volume of moving object
If multiple small coin-type lithium-ion secondary batteries are provided to fit limited space, then volume of moving object is reduced, but device complexity increases due to complicated connections
Solution Approach 1:
Multiple battery elements are electrically connected in series formation to create a single integrated battery unit. This merging approach consolidates what would otherwise be separate battery components into one unified structure, eliminating the need for complex external connection arrangements while maintaining the required total capacity.
Solution Approach 2:
The battery structure is designed to serve multiple functions simultaneously: it provides the required electrical capacity, fits within limited device volume, and maintains structural integrity through its folded configuration. This multi-functionality eliminates the need for separate components to address each requirement independently.
3Manufacturing precision
If rigid battery structure is used for manufacturing precision, then manufacturing precision is improved, but adaptability to curved surfaces deteriorates
Solution Approach 1:
The battery structure transitions from a rigid fixed form to a dynamic flexible configuration. The folded design allows the battery to adapt its shape to curved device surfaces while maintaining precise electrical connections between battery elements, enabling both manufacturability and adaptability.
Solution Approach 2:
The battery employs a flexible folded structure that can conform to curved surfaces. This flexible configuration maintains precise alignment of battery elements through the folding mechanism while allowing the overall battery assembly to adapt to the contours of wearable device surfaces.
Data Source
AI summary
A wearable device needs to have a design corresponding to complicated surfaces of human bodies. Thus, an electronic device that can fit the characteristics of each individual human body after being purchased and can be worn naturally and comfortably is provided. The electronic device includes a secondary battery which can be transformed. By using a secondary battery which can be transformed, for example, a secondary battery can be efficiently placed in a narrow and elongated space in the electronic device, and the elongated secondary battery can be bent together with the electronic device. Furthermore, the weight balance of the electronic device can be easily adjusted.