All-Solid Battery Electrode Layout for Dense Module Packing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for electrically connecting all-solid batteries using a wiring substrate limit the degree of freedom in arranging batteries densely, as the batteries must be aligned linearly to connect external electrodes.
Innovation Solution
The all-solid battery design includes extraction parts on multiple side faces, allowing for external electrodes to be coupled on adjacent faces, enabling flexible arrangements such as linear and L-shaped layouts, and allowing for series and parallel connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all-solid batteries are electrically connected using the wiring layer of a wiring substrate, then electrical connection is achieved, but the degree of freedom in arranging the all-solid batteries is limited and dense arrangement becomes difficult
Solution Approach 1:
The patent transitions from planar connection (all electrodes on one face) to three-dimensional connection by placing extraction parts on multiple side faces of the multilayer structure. This allows batteries to be arranged in various spatial configurations including linear and L-shaped layouts, fundamentally increasing arrangement freedom by utilizing vertical and lateral dimensions simultaneously.
Solution Approach 2:
The patent divides the single-plane electrode arrangement into multiple spatial segments by extracting electrodes from different side faces. This segmentation allows independent positioning of connection points on different faces, enabling modular and flexible battery pack designs where units can be connected in series or parallel according to spatial constraints.
2Productivity
If extraction parts are provided on multiple side faces, then arrangement freedom and dense packing are enabled, but manufacturing complexity increases
Solution Approach 1:
The multilayer structure serves multiple functions: it provides both energy storage and multi-directional electrical connection capabilities. The same stacked electrode-s electrolyte assembly that provides capacity also provides extraction parts on multiple faces, eliminating the need for separate connection structures and simplifying the overall manufacturing process despite the enhanced functionality.
Solution Approach 2:
The patent merges the electrode extraction function with the battery structure itself by making the extraction parts integral to the multilayer assembly. This combines what could be separate components (electrodes and connection terminals) into a unified structure, reducing assembly steps and manufacturing complexity while achieving dense packing.
3Adaptability or versatility
If external electrodes are coupled on adjacent faces, then flexible connection configurations (linear and L-shaped) are enabled, but electrical connection complexity increases
Solution Approach 1:
The patent utilizes three-dimensional space by placing extraction parts on adjacent side faces rather than confining all connections to a single plane. This spatial dimensionality change enables L-shaped and other non-linear connection configurations, allowing battery modules to adapt to complex packaging requirements while maintaining simple point-to-point electrical connections.
Data Source
AI summary
An all-solid battery includes: a multilayer structure that includes a plurality of first electrodes and a plurality of second electrodes, and has a first side face and a second side face adjacent to each other, the plurality of first electrodes and the plurality of second electrodes being alternately stacked with solid electrolyte layers interposed between the plurality of first electrodes and the plurality of second electrodes; a first extraction part exposed on the first side face, the first extraction part being a part of the first electrode; a second extraction part exposed on the second side face, the second extraction part being a part of the second electrode; a first external electrode coupled to the first extraction part on the first side face; and a second external electrode coupled to the second extraction part on the second side face.