Solid-State Battery Laminate Layout for Flexible Terminal Placement
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Solution Overview
Problem
Conventional solid-state batteries have limited flexibility in arranging external terminals, which restricts their application in various battery housing spaces and substrates.
Innovation Solution
The solid-state battery design features a solid-state battery laminate with active material contour portions and non-active material contour portions that face each other in the lamination direction, allowing for more flexible arrangement of external terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external terminals are arranged facing each other with the laminate interposed therebetween (conventional design), then the battery structure is simple and easy to manufacture, but the degree of freedom in arrangement of external terminals is limited
Solution Approach 1:
The patent transitions from a conventional arrangement where external terminals face each other across the laminate thickness to a design where terminals are arranged on the same side surface of the laminate. This dimensional reconfiguration allows terminals to be positioned on adjacent side surfaces or the same side surface, providing flexibility for different battery applications without complicating the overall structure.
Solution Approach 2:
The patent introduces asymmetric design elements by creating active material contour portions and non-active material contour portions that face each other in the lamination direction. This asymmetric arrangement of electrode materials enables differential terminal positioning, allowing one terminal to extend to a contour portion while the other terminal can be positioned more flexibly relative to the non-contour portion.
2Adaptability or versatility
If the solid-state battery is designed for specific applications with fixed terminal arrangements, then manufacturing is simplified, but adaptability to different battery housing spaces and substrates is reduced
Solution Approach 1:
The patent creates a universal battery design where the laminate structure can accommodate multiple terminal arrangements (facing each other, adjacent on same side, or on different sides) through the active material contour and non-active material contour configuration. This multi-functional design allows the same battery laminate to be adapted to various housing spaces and substrate mounting requirements without requiring different manufacturing processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design provides a higher degree of freedom in arranging external terminals, making the solid-state battery more versatile for different applications without compromising its performance.
Implementation Method 1
ions move between the positive electrode layer and the negative electrode layer through the solid electrolyte to charge and discharge the solid-state battery
Data Source
AI summary
A solid-state battery including a solid-state battery laminate having a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, each of the positive electrode layer and the negative electrode layer having an electrode active material. A first active material contour portion in which the electrode active material in one of the positive electrode layer and the negative electrode layer extends to a first plan-view contour of the solid-state battery laminate, and a first non-active material contour portion in which the electrode active material in the other of the positive electrode layer and the negative electrode layer does not extend to the first plan-view contour of the solid-state battery laminate face each other in a lamination direction.