Battery Electrode Mapping With Correlated Potential and Thermal Sensing
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Solution Overview
Problem
Existing methods fail to provide precise and detailed in-situ mapping of electrode potential and thermal distribution within battery cells, which is crucial for optimizing battery performance and safety.
Innovation Solution
A system and method utilizing a test device with sensors and a computerized device to simultaneously map electrode potential and thermal distribution, incorporating infrared sensors, voltage potential sensors, temperature sensors, and pressure sensors, along with a reference electrode and infrared transparent walls, to generate correlated data for refining battery operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are integrated into the battery cell for simultaneous mapping of electrode potential and thermal distribution, then measurement precision and data correlation are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (voltage potential sensors, temperature sensors, infrared sensors, pressure sensors) into a single integrated test device that simultaneously maps electrode potential and thermal distribution. This merging approach enables correlated multi-parameter measurement within one unified system, resolving the contradiction by achieving high measurement precision through integration while managing complexity through systematic design.
Solution Approach 2:
The test device is designed with multi-functional capabilities to perform simultaneous voltage mapping, thermal imaging, and pressure monitoring. The infrared transparent wall serves multiple purposes: maintaining cell structure integrity while enabling infrared transmission for thermal measurement. This universality allows one complex device to accomplish multiple measurement tasks that would otherwise require separate systems.
2Measurement precision
If infrared sensors are used to collect temperature variation data through the separator, then thermal mapping capability is improved, but the separator structure becomes more complex
Solution Approach 1:
The patent introduces an infrared transparent wall as an intermediary component that enables infrared radiation to pass through while maintaining the structural integrity of the battery cell. This mediator allows the infrared sensor to detect thermal radiation from the electrode through the separator without requiring modifications to the separator's primary function, thus improving thermal mapping capability without significantly complicating the separator structure.
Solution Approach 2:
The separator is modified locally by incorporating an infrared transparent wall at the specific location where thermal measurement is required. This local modification maintains the separator's standard structure in all other areas while providing the necessary infrared transmission property only where needed for sensing, thereby minimizing overall structural complexity.
3Loss of information
If simultaneous data collection from multiple sensors is implemented, then data correlation and analysis accuracy are improved, but data processing complexity increases
Solution Approach 1:
The patent implements a computerized device that receives and processes data from all sensors simultaneously, creating correlated maps of electrode potential and thermal distribution. The system uses feedback mechanisms to integrate voltage data, temperature data, and pressure data into a unified analysis framework, allowing real-time correlation between different parameters while managing data processing complexity through automated computational algorithms.
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 precise and detailed mapping of electrode potential and thermal distribution, allowing for improved battery performance and safety by identifying weak points and optimizing lithium plating and cooling strategies.
Implementation Method 1
an infrared sensor device configured for collecting data describing temperature variation across a surface of one of the anode or the cathode
Implementation Method 2
an infrared transparent wall configured for enabling the infrared sensor device to collect the data describing the temperature variation
Implementation Method 3
a voltage potential sensor configured for monitoring a first voltage potential at a first position upon one of the anode or the cathode as compared to a second voltage potential of the reference electrode
Data Source
AI summary
A system for in-situ mapping of electrode potential and thermal distribution is provided. The system includes a test device. The test device includes an anode, a cathode, a reference electrode, a separator disposed between the anode and the cathode, and a voltage potential sensor configured for monitoring a voltage potential at a first position upon one of the anode or the cathode as compared to a voltage potential of the reference electrode. The system further includes an infrared sensor device configured for collecting data describing temperature variation across a surface of one of the anode or the cathode.