The battery slicer is a key equipment used to accurately cut battery cells into specific sizes, widely used in the production, research and development, and quality inspection of lithium batteries. The precision of its operation directly affects the performance and safety of the battery. The following elaborates on the core details from four aspects: preparation before use, operation process, precautions, and maintenance.
1、 Preparation before use: eliminate hidden dangers and lay a foundation
1. Equipment status check
-Confirm that the power supply circuit is not damaged and the grounding is good; The emergency stop button is functioning properly.
-Check if the cutting blade is securely fastened and if there are any cracks or passivation on the blade edge (it is recommended to replace the blade after every 50 cuts).
-Clean up residual debris on the workbench to avoid foreign objects interfering with positioning accuracy.
2. Material compatibility confirmation
-Select the corresponding fixture based on the battery type (soft pack/cylindrical/square) and adjust the spacing between the positioning baffles to match the size of the battery cells.
-Test the thickness setting value of the thin film (usually 0.1-0.5mm) and calibrate the zero position of the equipment ruler with a micrometer.
3. Adequate protective measures in place
-Wear cut resistant gloves, goggles, and lab coats, and tie up long hair; Wearing jewelry or loose clothing is prohibited.
-Open the device protective cover to ensure the effectiveness of the infrared light curtain sensor (some models are equipped with human body induction power-off function).
2、 Operation process: Standardized actions, precise execution
1. Clamping and positioning
-Place the battery flat in the fixture slot, with the electrode ears facing outward and avoiding the cutting path; Soft pack batteries need to flatten wrinkles.
-Gently push the locking handle of the fixture, and the force should be such that the battery does not slide (too tight may cause deformation of the pole piece).
2. Parameter setting and trial cutting
-Enter the cutting length, speed (recommended initial value: low speed), and feed rate, and use scrap batteries for trial cutting to verify the flatness of the cross-section.
-Observe whether the cutting trajectory is centered, and if there is any deviation, recalibrate the position of the cutting die.
3. Formal cutting
-After starting the device, closely monitor the cutting process and immediately press the emergency stop button if there is a jam; Do not touch moving parts with your hands midway.
-After completing a single cutting, wait for the blade to reset before taking out the finished product and placing it in an anti-static tray in order.
4. Tailings processing
-Collect scraps and store them in specialized containers to avoid mixing them with metal debris and polluting the environment; Centralized destruction before the end of each workday.
3、 Attention: Strictly adhere to the bottom line and eliminate risks
1. Safety red line
-It is strictly prohibited to remove the protective cover or shield the light curtain sensor; Unauthorized personnel are not allowed to touch the PLC control panel.
-It is strictly prohibited to reach over the equipment during the cutting process, and the removal and placement of batteries can only be done when the machine is stopped.
2. Key points of quality control
-Each batch must be inspected for section burrs (≤ 0.05mm), dimensional tolerances (± 0.1mm), and pole piece integrity.
-When more than 3 consecutive burrs are found to exceed the standard, immediately stop the machine and check the sharpness and air pressure stability of the blade.
3. Response to special scenarios
-When cutting high nickel ternary batteries, inert gas blowing is used to prevent metal powder oxidation; Batteries soaked in electrolyte need to be pre dried before cutting.
-When the adhesion of the polarizer is severe, a small amount of alcohol can be dipped to gently wipe the blade, but it is necessary to ensure complete evaporation.
4、 Maintenance: Extend lifespan and ensure performance
1. Daily maintenance
-Clean the dust in the guide rail groove daily and apply a small amount of high-temperature lubricating oil; Check the tightness of the belt every week.
-Calibrate the displacement sensor monthly and verify the cutting length error with a standard block gauge (should be<0.05mm).
2. Quarterly in-depth maintenance
-Disassemble the spindle assembly, clean the bearings, and replace the worn synchronous belt; Detect the fluctuation value of motor current (normal range ± 10%).
-Upgrade the control system firmware and backup process parameters to the cloud to prevent loss.