Battery Diaphragm Gas Permeability Tester

The Battery Diaphragm Gas Permeability Tester is a precision instrument designed to evaluate the gas permeability of battery diaphragms and separators. It provides accurate, high-resolution measurements under controlled pressure conditions, enabling reliable assessment of materials used in battery production. The compact design and ease of operation make it suitable for laboratory and quality control environments.

Application

(1) Measuring gas permeability of battery diaphragms and separators in lithium-ion and other rechargeable batteries.

(2) Evaluating barrier performance of separator materials for battery safety and efficiency.

(3) Research and development of new diaphragm and separator materials.

(4) Quality control and inspection in battery manufacturing facilities.

(5) Laboratory testing for material science studies related to electrochemical devices.

(6) Comparing permeability of different separator types to guide material selection.

Standards

(1) GB/T 458 – Battery diaphragm gas permeability test method.

(2) ISO 536/2 – Paper and board determination of gas permeability.

(3) QB/T 1667 – Battery separator testing requirements.

(4) GB/T 23227 – Lithium-ion battery separator testing.

(5) ISO 2965 – Determination of gas permeability for thin films.

(6) YC/T 172 – Battery separator gas transmission test.

(7) GB/T 12655 – Testing of diaphragms for battery applications.

(8) GB/T 20042.7-2014 – Lithium-ion battery separator performance testing.

(9) GB/T 36363-2018 – Gas permeability test for battery diaphragm materials.

Features

(1) High-accuracy measurement of gas permeability (10–15000 s/100ml).

(2) Exceptional resolution (0.1 s/100ml) and pressure accuracy (0.0001 kPa).

(3) Multiple selectable pressure ranges: 5 kPa standard, 10 kPa and 20 kPa optional.

(4) Single-sample testing with secure sample holder.

(5) Compact, robust design suitable for laboratory environments.

(6) User-friendly interface for easy parameter setting and operation.

(7) Requires only clean air as a test gas.

(8) Provides reliable and repeatable results for quality control and R&D applications.

Parameters

Parameter	Specification
Test range	10–15000 s/100ml (standard, other ranges optional)
Resolution	0.1 s/100ml
Pressure accuracy	0.0001 kPa
Number of samples	1
Net weight	20 kg
Test gas	Clean air (user-supplied)
Power supply	AC 220V, 50Hz
Overall dimensions	370 mm (L) × 320 mm (D) × 450 mm (H)
Pressure range	5 kPa standard (10 kPa, 20 kPa optional)
Air source pressure	0.3–1.0 MPa

Accessories

(1) Main testing machine

(2) Sample holder

(3) Pressure application system

(4) User manual

(5) Power cable

Test Procedures

(1) Install the battery diaphragm or separator sample securely in the sample holder.

(2) Connect the clean air source to the machine and ensure proper pressure supply.

(3) Select the test pressure and configure the test parameters.

(4) Start the test; the machine measures the time required for 100 ml of gas to pass through the sample.

(5) Read and record the permeability value from the high-resolution display.

(6) Repeat the test for additional samples as needed.

Maintenance Information

(1) Regularly inspect the sample holder and pressure components for wear or leaks.

(2) Keep the instrument clean and free from dust or debris.

(3) Check the air source for contaminants that may affect test accuracy.

(4) Periodically verify calibration to maintain measurement precision.

(5) Handle the machine carefully to avoid damage to sensitive components.

(6) Follow manufacturer guidelines for servicing and spare parts replacement.

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