Flexible Rechargeable Battery with Segmented Unit Cells
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Solution Overview
Problem
There is a growing demand for rechargeable batteries with flexible characteristics to power flexible electronic devices such as wearable technology, but existing batteries do not adequately combine high capacity with flexibility.
Innovation Solution
A rechargeable battery design featuring a cell assembly with multiple unit cells separated by intervals, connected by first and second connection parts, each comprising a first electrode, a second electrode, and a separator, allowing for spiral-winding and enhanced flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a large-capacity rechargeable battery is configured by connecting multiple batteries in series, then the power output is improved, but the flexibility is worsened
Solution Approach 1:
The battery pack is divided into multiple independent unit cells that can be connected in series to achieve high power output while maintaining flexibility. Each unit cell is a separate module that can be individually configured and connected through connection parts, allowing the overall structure to be both powerful and flexible.
Solution Approach 2:
The battery structure transitions from a single-plane rigid configuration to a multi-dimensional flexible arrangement. Unit cells are arranged in series along a flexible substrate, enabling the battery to bend and conform to different shapes while maintaining electrical connectivity through the connection parts.
2Adaptability or versatility
If unit cells are disposed separated by predetermined intervals, then flexibility is improved, but device complexity is worsened
Solution Approach 1:
Multiple functional elements are merged into integrated connection parts that simultaneously provide electrical connectivity, mechanical support, and spacing between unit cells. The connection parts combine several functions into single structural elements, reducing overall complexity despite the segmented arrangement.
Solution Approach 2:
The connection parts are designed as universal components that serve multiple functions: electrical connection between cells, mechanical support for the flexible structure, and spacing maintenance. This multi-functionality reduces the number of separate components needed, simplifying the overall structure.
Data Source
AI summary
The present disclosure relates to a rechargeable battery including a cell assembly including a plurality of unit cells disposed to be separated by a predetermined interval, a casing member receiving the cell assembly, a first connection part connecting the plurality of unit cells, and a second connection part disposed parallel to the first connection part and connecting the plurality of unit cells, wherein each of the plurality of unit cells includes a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode.