Applications of Magnetostrictive Displacement Sensors in Battery Manufacturing
Magnetostrictive displacement sensors play an important role in different stages of battery production and testing. Their main applications include:
1. Battery Assembly
Controlling Coating Thickness on Electrode Sheets
In the electrode sheet production process, the gap between the coating head and the sheet must be very precise to achieve a uniform coating. Sensors are installed on the coating machine to measure the coating head's position in real time. The control system then adjusts the head automatically, ensuring consistent coating thickness, which improves battery quality and performance.
Ensuring Accuracy in Battery Case Assembly
When assembling battery cases, each part must fit together perfectly. Sensors monitor the position of fixtures and robotic arms to make sure all parts are aligned correctly. This prevents issues like poor sealing or internal short circuits caused by assembly errors.
Controlling Electrode Winding Position
During electrode winding, the winding head's position and speed need to be tightly controlled to ensure the electrode layers are wound evenly and firmly. Sensors track the winding head's movement in real time and, together with speed sensors, help maintain proper winding. This improves battery safety and energy density.
2. Battery Testing
Formation and Capacity Grading
In this stage, batteries are charged and discharged to test performance. Sensors are used to check the position and pressure of the battery fixtures, ensuring good contact. This prevents problems caused by too much or too little pressure, which could affect charging and discharging results.
Battery Appearance Inspection
When inspecting battery surfaces, probes must follow precise paths to detect scratches, dents, or bulges. Sensors provide accurate position feedback, ensuring the inspection tool moves correctly for a complete and reliable check.
Internal Structure Inspection
For X-ray or ultrasonic testing of battery interiors, sensors control the scanning mechanisms or sample stage. This allows detailed and accurate inspection of the battery's internal structure, helping detect issues like misaligned electrode sheets or damaged separators.
3. Other Supporting Processes
Electrolyte Filling
Accurate filling is critical for battery performance and safety. Sensors measure the displacement of the filling head, ensuring the right amount of electrolyte is added-avoiding overfilling or underfilling.
Battery Aging Tests
During aging tests, batteries are placed in racks or fixtures for long-term evaluation. Sensors monitor the position and movement of these fixtures, ensuring stability throughout the test. This guarantees reliable results and consistent test data.
