Battery Cell DSC Crucible Assembly for Thermal Contact and Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for testing battery cells using differential scanning calorimetry (DSC) face challenges in achieving intimate thermal contact and preventing short circuits, especially when testing battery cell portions with varying heights, and require cost-effective and time-efficient thermal analysis for thermal runaway modeling and cell chemistry screening.
Innovation Solution
A method involving a test crucible with a sample pan and lid arrangement that ensures intimate thermal contact through spacers and insulating layers, using materials like stainless steel and gold for sealing, and press-fitting lids to prevent short circuits, allowing DSC testing of battery cell layers simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate component testing is used for battery cell analysis, then testing cost and time are reduced for individual components, but thermal analysis of the complete battery cell system cannot be performed
Solution Approach 1:
The patent merges multiple battery components (electrodes, separator, electrolyte) into a single integrated test assembly that fits within one DSC crucible. This allows simultaneous thermal analysis of all components together, capturing system-level thermal behavior that separate testing cannot detect, while maintaining reasonable testing throughput.
2Reliability
If traditional testing methods are used for battery cells, then testing procedures are well-established, but they are costly and time-consuming
Solution Approach 1:
The patent replaces complex mechanical testing setups with a simplified DSC thermal analysis system. By substituting traditional mechanical/electrical testing infrastructure with a standardized DSC apparatus, the method achieves reliable battery cell characterization with significantly reduced time and cost while maintaining scientific rigor.
3Loss of information
If battery cells are disassembled for component analysis, then individual component properties can be studied, but interactions among battery materials cannot be detected
Solution Approach 1:
The patent segments the battery cell into its functional components (electrodes, separator, electrolyte) and arranges them in a structured assembly within the DSC crucible. This segmentation allows proper positioning and thermal contact of each component while keeping them together as an integrated system, enabling detection of material interactions without requiring full cell disassembly 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 low-cost and efficient thermal analysis of battery cells, providing insights into thermal properties and interactions among cell components, facilitating thermal runaway modeling and cell chemistry optimization.
Implementation Method 1
performing differential scanning calorimetry (DSC) testing of the sample
Implementation Method 2
increasing a temperature of the sample between a first temperature and a second temperature using one of a linear thermal ramp and a plurality of isothermal steps
Data Source
AI summary
A method for testing a sample of a battery cell includes arranging the sample of the battery cell in a sample pan of a test crucible; arranging a spacer on the sample of the battery cell; sealing the sample pan; and performing differential scanning calorimetry (DSC) testing of the sample.