Sheet Energy Device with Internal Wiring Patterns
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Solution Overview
Problem
The miniaturization of electronic equipment is hindered by the constraints imposed by sheet-shaped energy devices, which occupy a large area and require lengthy wiring, affecting the arrangement of components and reliability, especially in high-frequency equipment.
Innovation Solution
A sheet-shaped energy device with internal wiring patterns and optical functions formed on substrates, allowing for efficient connection of electronic and optical components without lengthy wiring, achieved through lamination of battery cells and substrates with integrated wiring and optical parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a sheet-shaped energy device is used to reduce thickness, then the thickness of electronic equipment is reduced, but the energy device occupies a large area and requires lengthy wiring
Solution Approach 1:
The patent merges the energy device with substrate layers containing wiring patterns and optical functions into a single integrated structure. The substrate layers are laminated between the positive and negative collectors, combining multiple functions (energy storage, wiring, optical properties) into one compact component, thereby reducing the area occupied while maintaining thinness.
Solution Approach 2:
The substrate layers serve multiple functions simultaneously: they provide structural support, contain wiring patterns for electrical connections, and offer optical functions. This multi-functionality eliminates the need for separate components, reducing the overall area occupied by the energy device while maintaining its thin profile.
2Length of stationary object
If a sheet-shaped energy device is used to reduce thickness, then the thickness of electronic equipment is reduced, but lengthy wiring degrades reliability
Solution Approach 1:
The wiring patterns are integrated directly into the substrate layers that are laminated within the energy device structure. This merging of wiring and structural layers shortens the wiring length significantly compared to external wiring, thereby improving reliability while maintaining the thin profile of the device.
Solution Approach 2:
The patent transitions from planar wiring arrangements to a three-dimensional laminated structure where wiring patterns are embedded within intermediate substrate layers. This dimensional reorganization allows for shorter wiring paths through the thickness direction, improving reliability without increasing the device's footprint.
3Ease of manufacture
If wiring patterns are formed on outermost substrate layers, then manufacturing is simplified, but the wiring is exposed and may cause short circuits
Solution Approach 1:
The substrate layers containing wiring patterns are nested between the positive and negative collector layers in a laminated structure. This nesting arrangement protects the exposed wiring patterns from external contact that could cause short circuits, while the lamination process remains relatively simple and manufacturable.
Solution Approach 2:
Multiple functional layers (substrates with wiring patterns, positive collector, negative collector, active materials, electrolyte) are merged into a single laminated structure. This integration provides inherent protection for the wiring patterns through the layered configuration, reducing the risk of short circuits while maintaining manufacturing simplicity.
Data Source
AI summary
A sheet-shaped energy device includes at least sheet-shaped battery cells, in each of which a positive collector, a negative collector, a positive active material, and an electrolyte are laminated, and a plurality of substrates in a thickness direction. An internal wiring pattern and/or an optical function part are formed on at least one substrate excluding a substrate constituting an outermost layer of the energy device among the plurality of substrates. Because of this, a constraint on the arrangement of various kinds of components used simultaneously with the sheet-shaped energy device and lengthy wiring can be reduced in electronic equipment.