Lithium Battery Diaphragm Winding Pressure Mapping

A domestic power battery head company produces battery diaphragms by slicing and winding with production equipment. The customer wants to quantify the change with our pressure distribution measurement system, adjust the parameters and improve the yield rate.

Two sensors of the same model are wound on different reels for testing, and the pressure after 1000, 2000, 3000 and 4000 turns are tested respectively, and the software records the pressure images and pressure data. Comparative analysis of the two sets of data.

The test data show that the force and pressure will gradually increase in the early stage of winding, but after reaching a certain number of meters, the force and pressure inside the diaphragm tends to stabilize, and there is a de- creasing trend. This is of reference significance for the subsequent research on the pressure balance point of the diaphragm winding process and the ad- justment of the winding parameters.