Typical applications
Thickness changes of pouch cells can be monitored. Either pressure, temperature or SOC induced.
Cell swelling during charge and discharge experiments
Mechanical stress monitoring
- Thickness creeping versus time, pressure and temperature
- Monitoring of formation processes
- Plating and stripping evaluations
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Detailed Description
The LVDT Distance Add-on for ComprePouch is used to allow precise monitoring of thickness changes of pouch cells, for example to track cell breathing or plating and stripping processes in a solid-state cell.
By arranging 2 sensors in a line, the setup performs a geometric correction across the longer side of the fixture and enables distance measurements with an accuracy of at least 0.5 µm.
The LVDT distance add-on is attached to the metal plates of the ComprePouch cell holders, as close as possible to the actual sample.
The setup can be used in temperature chambers to ensure precise conditions.
The system includes an electronic unit and full software integration into CompreDriveControl (CDC). We provide a special software that allows for easy, optimal positioning of the sensors and the transfer of raw and tare data (initial thickness of the pouch cell can be specified).
The total measuring range of 10 mm of the sensors allow the investigation of pouches ranging from thin single-layer solid-state cells to very thick commercial multilayer Li-Ion pouches.
Up to a cell thickness of approximately 8.5 mm, absolute thickness measurements are possible.
Technical Details
- Suitable pouch cell fixture:
ComprePouch
- Measuring range:
10 mm
- Linearity deviation:
< +/-0.25% FSR
- Temperature coefficient:
< +/-0.2% FSR / 10 K
- Temperature range sensor:
-25 °C to 85 °C
- Ripple:
< 5 mV RMS
- Accuracy:
< 0.5 µm
- Data interface:
- Modbus over RS232
- fully integrated in CDC
Key Data
- Art. No.:
840126
- Essential features at a glance:
- Measuring range 10 mm with accuracy < 0.5 µm
- Fast and comfortable assembly and handling
- Fully integrated into CompreDriveControl software
