Stack Type Battery With Protruding Electrodes
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Solution Overview
Problem
Existing stack type batteries face challenges in maximizing space utilization and increasing capacity while maintaining compactness, particularly in mobile electronic devices with high integration density requirements.
Innovation Solution
The design incorporates a stack configuration with alternating cathode and anode sheets, separated by protrusions that do not overlap, and active material layers on these protrusions, increasing the reaction area and capacity of the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the volume of the battery is increased to increase capacity, then the battery capacity is improved, but the compactness of mobile electronic devices deteriorates
Solution Approach 1:
The patent transitions from a conventional planar battery configuration to a three-dimensional stack type configuration. Multiple electrode sheets (cathode and anode) are stacked alternately with separators in the vertical direction, creating a multi-layered structure. This dimensional change allows the battery to utilize vertical space effectively, increasing capacity without proportionally increasing the horizontal footprint, thus improving capacity density while maintaining compactness.
Solution Approach 2:
The patent implements a nested arrangement where multiple electrode sheets are stacked within a confined space. The cathode sheets, anode sheets, and separators are arranged in an alternating nested sequence, with each layer containing the next. This nesting approach maximizes the utilization of available volume by packing electrode material efficiently in three dimensions, thereby increasing capacity without requiring proportional volume increase.
2Volume of moving object
If the integration density of parts is increased for compact device design, then the compactness is improved, but the battery capacity is reduced
Solution Approach 1:
By stacking electrode sheets vertically in multiple layers, the battery creates a three-dimensional structure that efficiently utilizes vertical space. This allows high integration density within a compact volume while maintaining sufficient electrode material quantity for adequate capacity. The multi-layer configuration enables more electrode surface area to be packed into a smaller overall volume.
Solution Approach 2:
The battery is divided into multiple discrete electrode sheets (cathode and anode) separated by separators, forming individual functional units that are stacked together. This segmentation allows for efficient space utilization as each layer can be independently optimized and packed tightly, achieving high integration density while maintaining total capacity through the cumulative effect of multiple segments.
Data Source
AI summary
A stack type battery includes a stack including: a plurality of cathode sheets; a plurality of anode sheets, which are alternately disposed with the cathode sheets; and a plurality of separators, where each of the separator is disposed between a corresponding cathode sheet of the cathode sheets and a corresponding anode sheet of the anode sheets, where the stack includes first to third protrusions, the first protrusion includes a portion of the cathode sheets which does not overlap the anode sheets and the separators, and the second protrusion includes a portion of the anode sheets which does not overlap the cathode sheets and the separators.