In-situ Coin Cell Optical Analysis for Battery Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The uncertainty of structural safety in lithium ion batteries due to continuous lithium attachment and detachment during charge and discharge limits the effective use of over-lithiated oxide (OLO) as an anode material, necessitating real-time observation and analysis of electrode state changes during charge and discharge.
Innovation Solution
An in-situ coin cell system with a measuring system that includes a transparent window and optical measuring system for real-time analysis of electrode state changes using light, allowing for the measurement of light emitted, scattered, or reflected from the electrodes during charging and discharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If over-lithiated oxide (OLO) is used as an anode material to achieve higher capacity and energy density, then the energy density is improved, but the structural safety becomes uncertain due to continuous lithium attachment and detachment
Solution Approach 1:
The patent applies preliminary action by conducting real-time observation and analysis of electrode state changes during charge and discharge cycles before structural failure occurs. The in-situ coin cell enables continuous monitoring of the OLO anode material's structural evolution, allowing researchers to identify degradation patterns and safety thresholds in advance, thereby preventing catastrophic structural failure while maintaining high energy density performance
2Reliability
If real-time observation of electrode state changes is implemented to ensure structural safety, then the reliability is improved, but the device complexity increases due to the need for in-situ coin cell and optical measuring system
Solution Approach 1:
The patent merges the electrochemical cell structure with the optical measurement system into an integrated in-situ coin cell. The transparent window is incorporated directly into the cell assembly, and the optical measuring system is configured to work in conjunction with the electrochemical cell components. This merging eliminates the need for separate observation apparatus and reduces overall system complexity while enabling continuous real-time monitoring of electrode state changes for structural safety assurance
3Measurement precision
If transparent window and optical measuring system are added to enable real-time analysis, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The optical measuring system is designed with multi-functionality to measure various electrode properties including state of charge, structural changes, and degradation patterns through different optical techniques. The same transparent window and optical path are used for multiple measurement modes, eliminating the need for separate specialized measurement devices. This universal approach achieves high measurement precision for multiple parameters while minimizing the increase in device complexity
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
Enables reliable and applicable real-time analysis of electrode state changes, providing insights into the degradation and performance of OLO anode materials, enhancing the understanding and commercialization of lithium ion battery technology.
Implementation Method 1
a first optical measuring system which irradiates the in-situ coin cell with light and measures light emitted from the in-situ coin cell due to the irradiation
Implementation Method 2
a transparent window between the current collector and at least one of the through hole and the another through hole
Data Source
AI summary
An in-situ coin cell includes a case, a cap coupled to the case, and an energy storage member disposed between the case and the cap, where a through hole is defined in at least one of the case and the cap, the energy storage member includes a current collector adjacent to the through hole, and another through hole is defined in the current collector. The in-situ coin cell may further include a transparent window between the current collector and at least one of the through holes.