UL 2591
Outline of Investigation for Battery Cell Separators

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2018-10-09DOD Approved: --
Price Code:AANSI Approved: --
Type:outline

  • SCOPE

    1 Scope

    1.1 These requirements cover short-term test procedures to be used for the evaluation of battery cell separators for use in lithium ion cells.

    1.2 These separators are intended to provide electrical insulation between the lithium-ion cell electrodes while still allowing for ion transport between the electrodes, when filled with electrolyte.

    1.3 The test procedures covered in this outline provide information with respect to the physical, mechanical, thermal, flammability and other properties of the battery cell separator under consideration.

  • TABLE OF CONTENTS
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    • Outline Title Page
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 References
          • 4 Glossary
        • PERFORMANCE
          • 5 Supplementary Test Procedures
          • 6 General
          • 7 Physical Property Tests on the Separator
            • 7.1 Permeability
            • 7.2 Thickness
            • 7.3 Porosity
            • 7.4 Pore-size and pore-size distribution
            • 7.5 Wettability
          • 8 Mechanical Property Tests on the Separator
            • 8.1 Tensile strength
            • 8.2 Puncture strength
            • 8.3 Needle puncture
            • 8.4 Blunt puncture
          • 9 Thermal Property Tests on the Separator
            • 9.1 Dimensional stability
            • 9.2 Shutdown temperature
            • 9.3 Melt temperature
          • 10 Combustion Property Tests on the Separator
            • 10.1 Heat of combustion
          • 11 Material Identification/Characterization Tests
          • 12 Quality Assurance (QA) Program
        • MARKING
          • 13 Markings
    • APPENDIX A
    • APPENDIX B Reference List of Applicable Test Procedures