Calibration method, apparatus, and computer storage medium for contact parameters of electrode materials

The combined experimental-simulation calibration method for electrode materials improves the accuracy and reliability of contact parameter calibration, addressing the inaccuracies in existing methods by using axial force-displacement curves and compression models.

JP2026518912APending Publication Date: 2026-06-11EVE ENERGY CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
EVE ENERGY CO LTD
Filing Date
2024-07-01
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

The existing methods for calibrating contact parameters of electrode materials in lithium battery manufacturing are inaccurate due to the difficulty in directly measuring parameters like stiffness and friction coefficient, leading to low accuracy in parameter calibration and hindering the optimization of the manufacturing process.

⚗Method used

A combined experimental-simulation calibration method involving uniaxial lateral-constrained compression tests and discrete element simulations to determine the calibration range and accuracy of contact parameters, using axial force-displacement curves and uniaxial lateral-constrained compression models.

🎯Benefits of technology

This method simplifies the experimental process and significantly enhances the accuracy and reliability of contact parameter calibration, providing a solid theoretical basis for the manufacturing process of electrode materials.

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Abstract

This application discloses a method, apparatus, and computer storage medium for calibrating the contact parameters of an electrode material, the method comprising: performing a discrete element simulation test on the electrode material based on the calibration range and calibration model of the contact parameters of the electrode material, when the axial force-displacement curve of the target press sheet of the electrode material satisfies the conformity conditions of the contact model; further obtaining the simulated axial pressure-axial strain relationship based on the target discrete element simulation parameters of the electrode material; determining whether the contact parameters have been successfully calibrated based on this relationship; and, if successful, determining the calibration result of the contact parameters.
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