The raw materials are mixed and weighed before liquid injection. The company's single-point test high-precision weighing sensor can be used, with high accuracy and good performance. The battery extrusion pressure is pressed into a line to monitor the extrusion pressure. The sensor has strong resistance to bias load, high stability and high linearity requirements. The company's flat-plate sensor can be used. The motor and housing assembly can use the company column structure or S-type structure sensor.