In-Situ Model Coin Cell Swelling Testing System

Introduction

The Model Coin-Cell In-Situ Swelling Testing System using high-precision displacement sensors and high-stability structural systems, the swelling thickness change curve of the model coin-cell battery is tested in-situ, the swelling performance of the active material is quickly analyzed, and material development is facilitated.

Characteristic

1. The instrument size is small (length *width * height: 120 * 150 * 280mm), which can be placed in the glove box;

2. The model coin cell can be used to assemble various types of full coin cell;

3. Good tightness can ensure long-term test stability and obtain more reliable test results;

4. High-precision thickness measurement system, thickness measurement resolution 0.1um, precision ±1 um.

5. In-situ test of the full-cell expansion thickness curve;

6. lon conductivity of the solid electrolyte can be measured;

7. The software can automatically combine the thickness change of the model coin cell with thecharging and discharge data (compatible with partial charging and discharge tester), and outputthe report involving all testing data.

Applications

1. Material evaluation
2. Lithium plating analysis
3. Battery cell structure evaluation
4. Operating condition evaluation.

Description

As a popular energy storage carrier, lithium-ion battery (LIB) has been widely used in our daily life. With the increas eof the application scenarios, the safety of the LIBs receives higher requirements. The charging and discharging processes of the LIBs are usually accompanied by the structure expansion with diferent degrees. On the one hand the structure expansion will affect the assembly space of the LIBs, on the other hand, the accumulation of the side reactions caused by the irreversible expansion will also lead to the structural destruction of the active material and accelerate the capacity fading. For a single cell, there are several methods for characterizing its expansion performance, such as applying a certain pressure on the surface of a single cell, and testing the expansion force or the expansion thickness of the cell. However, the expansion parameters measured by all these methods include the expansion of multiple positive and negative electrodes, separators and aluminum plastic film or aluminum shell, which cannot accurately analyze the expansion property of a material.

1. Scheme of Model Coin Cell

2. Main Features

7. The software can automatically combine the thickness change of the model coin cell with the charging and discharge data (compatible with partial charging and discharge tester), and output the report involving all testing data.

Application Cases