Laminar Battery System Planar Layer Stacking
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Solution Overview
Problem
Conventional battery designs, such as rolled configurations, face challenges in achieving high energy density and efficient energy storage due to non-planar side roll regions and substantial spacing requirements between anode and cathode layers, which limit their capacity and longevity in portable electronics.
Innovation Solution
The laminar battery system comprises a plurality of substantially planar layers, including cathode, anode, and separator layers, arranged in a flat configuration to increase active material volume, reduce spacing between anode and cathode, and enhance energy storage density, with a laminated structure and encapsulating materials for protection and insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If rolled configuration is used, then battery can be formed with anode and cathode layers, but non-planar side roll regions and substantial spacing requirements reduce energy density
Solution Approach 1:
The battery is segmented into multiple flat layers (anode, cathode, separator) stacked in a planar configuration rather than rolled together. This segmentation eliminates the non-planar side roll regions while maintaining the layered structure necessary for battery function, directly resolving the contradiction between achieving energy density and avoiding structural complexity.
Solution Approach 2:
The invention transitions from a three-dimensional rolled structure to a multi-layered planar stacking arrangement. By changing the dimensional organization from radial (rolled) to layered (stacked), the design eliminates wasted space in side roll regions while maximizing the usable volume for active materials, thereby improving energy density without the drawbacks of rolled configurations.
2Quantity of substance
If substantial spacing is maintained between anode and cathode layers, then shorting is prevented, but energy storage capacity is reduced
Solution Approach 1:
A thin separator layer is introduced as an intermediary between the anode and cathode layers. This separator maintains the necessary electrical insulation to prevent shorting while being thin enough to minimize the spacing between active layers, thereby maximizing energy storage capacity without compromising reliability.
Solution Approach 2:
The separator is implemented as a thin film structure that provides adequate insulation between electrodes while occupying minimal space. This thin film approach allows the battery to maintain close spacing between anode and cathode layers for high energy density while still preventing electrical shorting through the insulating properties of the separator film.
Data Source
AI summary
A battery system comprises a plurality of substantially planar layers extending over transverse areas. The plurality of layers comprises at least one cathode layer, at least one anode layer, and at least one separator layer therebetween.