Multi-Channel In-Situ Swelling Tester (MSWE1400 )
Brand: IEST
Product origin: Xiamen
Delivery time: About 6-8 weeks after placing the order
Supply capacity: About 20-40 sets/month
Multi-Channel In-Situ Lithium Battery Swelling Analyzer MSWE1400 used to be applied to the in-situ swelling thickness test of model battery, laminated battery and soft pack battery.
Model Specifications
| Equipment Parameters | ||||
| Model | MSWE1100 | MSWE1200 | MSWE1300 | MSWE1400 |
| Number of Channels | 4 | 4 | ||
| Pressure Regulation Mode | with counterweight | servo motor | ||
| Pressure Limit | 0.5kg/1kg/5kg (Customizable according to customer needs) | 1~100kg | ||
| Pressure Accuracy | ±0.01kg | 0.1kg/±0.3%F.S | ||
| Scope of Thickness Detection | ±5mm | |||
| Thickness Detection Resolution/Precision | 0.1µm/±1µm | 0.01μm/±0.1μm | 0.1µm/±1µm | 0.01μm/±0.1μm |
| Systematic Error | ≤3% | |||
| Maximum Cell Size Measurement | 60*90*4mm(customized according to specific needs) | |||
| Installation Requirements | ||||
| Source | 220~240V/50~60Hz | 220~240V/50~60Hz | ||
| Voltage Change Tolerance | ±10% | ±10% | ||
| Power Consumption | 20W | 400W | ||
| Ambient Temperature | 25±5℃ | |||
| Ambient Humidity | ≤80%RH (no moisture condensation) | |||
Swelling Behavior of Lithium-ion Batteries
During the process of charging and discharging, the the interca-lation and deintercalation of Li-ion in the electrodes will cause the lithium-ion batteries (LIBs) to expand and shrink. Ideally, the volume change of the material during the lithium intercalation/deintercalation should be reversible. However, in is always a fraction of lithium-ion that cannot be completely unembedded from the electrodes or deposited on the anode surface as insoluble byproducts during the cycle. This will cause irreversible swelling of the LIBs and serious consequences, such as: the deformation of the jelly roll, the rupture of the material particle, the break and regenera-tion of the solid electrolyte interphase (SEI) which constantly consume the electrolyte.
Therefore, the swelling be-havior of LIBs has become a very important reliability issue in the application of lithium-ion battery, and it needs to be considered in the design of battery structure, particle size, adhesive and electrode structure of anode materials. for the next generation anode materials with higher energy density, such as silicon and lithium metals, the swelling problem will be much more serious than graphite. Therefore, an accurate and effectivetool for evaluating the swelling behavior of LIBs can effectively the development and optimization of the silicon-based anode and lithium metal anodes. Moreover, on the aspect of pack design, the swelling evaluation of LIBs can also improve the utilization rate of the pack space under the premise of safety.
Traditional Test Methods
| Traditional Method | Disadvantage |
| Electron Microscopy Observation | Ex-situ test, high equipment requirements, small observation area, human / material consumption |
| Micrometer / PPG Measurement | Ex-situ test, large human error, poor repeatability, and small measurement range |
| Traditional Tooling Fixtures | Fixed bolt is easy to loosen and deform, resulting in large measurement error and poor repeatability |
Introduction of Multi-Channel In-Situ Swelling Tester
