LONROY Powder Compaction Density Tester Powder Compression Density Analyzer Automatic Powder Compact Density Testing Machine

LONROY Powder Compaction Density Tester Powder Compression Density Analyzer Automatic Powder Compact Density Testing Machine

Test standards

GBT 24533-2009 Lithium-ion Battery Graphite-Based Negative Electrode Materials - Test Method for Powder Compaction Density

Equipment Usage

Powder Compaction Density Tester - This instrument is suitable for testing the compacted density of various powder particles under single-point or multiple-point pressure/pressure conditions.

Working Principle

During the compression process by external force, as the powder moves and deforms, larger pores are filled, the contact area between particles increases, causing an attraction between atoms and enhancing the mechanical bonding between particles. Thus, a compact with a certain density and strength is formed.

The formula for calculating the compacted density: Compacted density = Surface density / Thickness of the material

During the design of lithium-ion batteries, the compaction density = surface density / (final thickness of the electrode sheet - thickness of the current collector), with the unit being g/cm³.

The compaction density is divided into: the anode density (also known as the positive electrode compaction density) and the cathode density (also known as the negative electrode compaction density).

During the manufacturing process of lithium-ion power batteries, the compaction density has a significant impact on the battery performance. The compaction density is closely related to the sheet specific capacity, efficiency, internal resistance, and the battery's cycling performance.

The greater the compaction density, the higher the capacity of the battery can be. Therefore, compaction density is also regarded as a reference indicator for the energy density of the material.

Product Overview

This instrument is operated through a 10-inch touch screen and is controlled by Siemens PLC. It intelligently loads and maintains a constant pressure. The pressure and speed can be adjusted. Truly achieving the intelligence and automation of the testing process, without the need for manual intervention. The test process is automatically completed. After the test is finished, it automatically returns to the initial position. The test data can be printed.

This instrument has high measurement accuracy and small repeatability error. The test process is fully automated. The settings page is reasonable and the operation is simple. Operators do not need professional training to operate it. It truly realizes one-click automated testing.

This instrument features high measurement accuracy, good stability, compact structure and convenient operation. It complies with international standards.

Equipment composition

The structure of this instrument consists of the following parts:

1. Force loading system: Powered by a servo motor, it performs loading with precise control of pressure, without noise, and can be continuously loaded.

2. System control and data acquisition: 10-inch touch screen operation, Siemens PLC control and data collection,

3. Test fixture electrodes: Test fixture for mold cavity with a size of 13.0mm

Advantages and Features

1. 10-inch touch screen display, supporting remote control, with simple and convenient operation.

2. The testing process is automated. Once the test is completed, it automatically returns to the initial position.

3. Multiple testing modes, including constant pressure/constant pressure strength/gradient pressure/gradient pressure strength/compression ratio testing modes

4. During the testing process, real-time display of pressure, pressure intensity, compression thickness and compression rate is provided.

5. Equipped with a built-in mini printer, supporting data printing

6. The multi-point gradient test results can automatically calculate the resistance difference between each gradient and automatically determine the percentage.

7. The results of the multi-point test can be viewed online and exported as data.

8. Real-time synchronous display of pressure/thickness curves

LONROY Powder Compaction Density Tester Powder Compression Density Analyzer Automatic Powder Compact Density Testing Machine

Technical Specification