Sheet Type Cell Evaluation via Surface Electrode Probe
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional secondary cells, particularly chemical type cells, face issues with rechargeability, energy density limitations, material costs, and safety risks due to electrolyte leakage and short circuits, while physical type cells are not rechargeable and lack established evaluation methods.
Innovation Solution
An evaluation apparatus and method for sheet type cells, involving an electrode probe to measure electrical quantity on the surface of positive and negative electrodes, allowing for the assessment of charging/discharging characteristics without risking leakage or fire, and enabling higher energy density without material cost constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If chemical type secondary cells use electrolytes to enable rechargeability, then charge/discharge capability is improved, but risk of leakage and fire increases
Solution Approach 1:
The patent removes electrolytes from the cell structure entirely, extracting the harmful component that causes leakage and fire risks while preserving the rechargeable functionality through solid-state electrode materials
Solution Approach 2:
The invention changes the physical state of the cell from liquid-electrolyte-based to solid-state, fundamentally altering the operational parameters to eliminate electrolyte-related hazards while maintaining energy storage and release capabilities
2Quantity of substance
If conventional cells use rare metals such as lithium to increase capacity, then energy density is improved, but material cost and procurement difficulty increase
Solution Approach 1:
The patent replaces expensive rare metals with abundant, inexpensive materials such as metal oxides and organic compounds, using readily available substances that can be sourced without supply chain constraints
Solution Approach 2:
The invention changes the material composition parameters from rare metal-based to abundant material-based systems, fundamentally altering the cost and availability characteristics while maintaining functional performance
3Duration of action of moving object
If chemical reactions are used in secondary cells to store and extract electricity, then rechargeability is improved, but charge/discharge performance is lowered and life is shortened
Solution Approach 1:
The patent replaces chemical reaction mechanisms with physical electron transfer mechanisms in solid-state materials, substituting the chemical system with a physical system that avoids degradation from chemical side reactions
Solution Approach 2:
The invention changes the fundamental operational mechanism from chemical reactions to solid-state electron transfer, altering the kinetic and thermodynamic parameters to achieve faster response and longer stability
Data Source
AI summary
An electrode probe is brought into contact with a measurement part on an outer surface of at least one of the positive electrode and the negative electrode of a sheet type cell, and quantity of electricity is measured at the measurement part, so as to evaluate the sheet type cell. The electrode probe may be connected to a voltage meter and to a charge source or a discharge source, and the evaluation made by detecting a charge characteristic that changes the cell from a non-charged state to a fully charged state, a discharge characteristic that changes the cell from a fully charged state to the non-charged state, or a measurement voltage of the voltage meter when the cell is in the fully charged state.