Battery Evaluation Data Linking for Correlated Spectral Analysis
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Solution Overview
Problem
Current methods for evaluating lithium-ion secondary batteries lack the ability to efficiently link multiple measurement techniques dynamically, limiting comprehensive analysis and real-time evaluation of material properties during charge and discharge cycles.
Innovation Solution
A battery evaluation system comprising a charge and discharge device, a measurement device, and an information processing unit that synchronizes data from X-ray diffraction, Raman, and other spectroscopic measurements to generate and display correlated graphs of voltage and spectral data, allowing for dynamic linking of measurement methods and real-time material evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple measurement methods are used for comprehensive battery evaluation, then measurement precision and analysis capability are improved, but device complexity and difficulty of operation increase
Solution Approach 1:
The patent combines multiple measurement devices (XRD, Raman, infrared, XANES, XPS, neutron diffraction, laser microscope, SSRM) into a single integrated battery evaluation system. All these devices measure the same battery sample simultaneously or sequentially, and their data are linked by a timing mechanism to correspond to specific charge/discharge states, achieving comprehensive material property analysis without requiring separate evaluation processes
Solution Approach 2:
The patent introduces a timing device as an intermediary component that synchronizes data acquisition from multiple measurement devices. The timing device generates timing signals that control each measurement device's operation and timestamps the data from each device, enabling precise correlation of data from different sources without complex direct integration between devices
2Productivity
If multiple measurement methods are synchronized for real-time evaluation, then productivity and evaluation speed are improved, but device complexity and measurement coordination difficulty increase
Solution Approach 1:
The patent implements periodic measurement cycles where the timing device sequentially controls each measurement device to acquire data at predetermined intervals during charge/discharge processes. This periodic action allows comprehensive evaluation to be completed efficiently while maintaining clear temporal organization of measurements from multiple devices
Solution Approach 2:
The timing device serves as a central coordinator that manages the operation schedules of all measurement devices. It generates timing signals that trigger measurements at appropriate moments and timestamps data to enable automatic correlation, greatly simplifying the coordination of multiple devices compared to direct peer-to-peer integration
3Loss of information
If data from multiple measurement devices are linked by timing, then information completeness and analysis capability are improved, but data processing complexity and loss of information increase
Solution Approach 1:
The timing device performs preliminary timestamping of data from each measurement device as the data is generated. By embedding timing information directly into each data record during acquisition, the system establishes the temporal relationship between measurements from different devices before any complex analysis is performed, preserving complete information for later correlation
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 comprehensive, real-time evaluation of lithium-ion secondary batteries by synchronizing and correlating multiple measurement data sets, improving understanding of material properties and battery performance during operation.
Implementation Method 1
a first measurement device 140...perform, in the first period, measurement of a waveform such as a spectrum a plurality of times...The waveform such as the spectrum obtained by the measurement includes information derived from a material included in the secondary battery 121
Implementation Method 2
In the XRD analysis, a sample is irradiated with a fixed-wavelength X-ray with varying incident angles, and the intensity of the reflected X-ray is measured to obtain a diffraction pattern inherent in the substance of the sample
Data Source
AI summary
A battery evaluation system that performs evaluation by easily linking a plurality of measurement methods relating to a secondary battery is provided. A charge and discharge device is configured to perform, in a first period, either or both of charge and discharge of a secondary battery. The first measurement device is configured to perform, in the first period, measurement of a spectrum a plurality of times. The arithmetic portion is configured to generate a first graph using the plurality of measured spectra. The arithmetic portion is configured to generate data of a second graph using a set of data including a voltage and the time of measurement of the voltage. A display portion is configured to display the first graph and the second graph at the same time. The battery evaluation system is configured to set a first area in one of the first graph and the second graph and to display a second area corresponding to the first area in the other of the first graph and the second graph.