The measurement technology used in the many production stages of battery manufacturing is subject to drastic requirements in terms of accuracy, performance and robustness. Therefore, the use of Micro-Epsilon's high-precision distance sensors, laser scanners and sensor systems makes it possible, among other things, to measure accurately. the thickness of the coatings.
In the battery industry, online control of production gaps contributes significantly to profitability, resource conservation and quality assurance. The thickness of the strip materials and coated films is a decisive measurement quantity in this respect. Micro-Epsilon's distance sensors, laser scanners and sensor systems have proven themselves in these processes. They offer a reliable solution for many measurement tasks in battery production and are used in many stages of the process – from electrode manufacturing to training to assembly.
For high-precision thickness measurements, it is possible to use different types of sensors based on different measurement principles. Micro-Epsilon's wide and varied product range offers, for each type of coating and object to be measured, the appropriate measurement process with the right sensor.
For belt thickness and coating measurements with electromagnetic sensors, two capacitive sensors are attached to each other. They measure from both sides on electrically conductive materials. The two linear distance signals of the sensors are calculated in the controller to obtain an accurate thickness value. Compared to optical methods, the measuring spot is larger. This makes it possible to average the structures and irregularities. Thanks to the integrated temperature compensation, stable and accurate measurement values are obtained even at high ambient temperatures.
If coating thicknesses are measured using optical sensors, these are also placed opposite each other. OptoNCDT 1900 laser sensors operate with high resolution and can be used in both wet and dry coating processes. Due to the small diameter of the light points, even the smallest details can be reliably detected. In addition, measurements are carried out with high dynamics.
The thicknessGauge turnkey system O.EC detects the thickness of the electrode coating. It uses the innovative combiSensor, which combines an eddy current sensor for measurement on the guide cylinder and a capacitive sensor for distance measurement on the surface of the material. The signal difference makes it possible to obtain the exact value of the thickness of the electrode coating. The sensors are designed in such a way that the measurements are reliable and extremely accurate, even in case of high and fluctuating ambient temperatures.