Cell pole piece tension swing arm mechanism and swing arm tension control method

Abstract

The invention relates to a cell pole piece tension swing arm mechanism and a swing arm tension control method. A servo motor is arranged on a motor seat. A spindle of the servo motor is connected witha tension swing arm through a coupling. Two sets of pole piece passing rollers are symmetrically mounted on the tension swing arm, the ends of the two sets of pole piece passing rollers are connectedthrough a passing roller connecting plate, and a pole piece passes through the position between the two sets of pole piece passing rollers. The tension swing arm is pre-provided with a balance position, an upper limit position and a lower limit position. During passing, passing tension can enable the tension swing arm to generate the magnitude-changing twisting force. Tension generated by passingfeeds back signals to the servo motor in time through a tension sensor, the servo motor carries out fast responding to control output torque, and the tension swing arm can deflect by a certain anglewithin a preset angle range to control the passing tension with high precision. According to the cell pole piece tension swing arm mechanism and the swing arm tension control method, the servo motor controls the tension swing arm to carry out tension real-time control within a certain rotating angle according to pole piece tension negative feedback information.

Description

Technical field: [0001] The invention relates to the field of battery sheet production, and more specifically relates to a battery pole piece tension swing arm mechanism and a swing arm tension control method. Background technique: [0002] When the lithium battery cell completes the winding process, the tension control of the pole piece (diaphragm) plays a vital role in the winding effect of the battery cell and the quality of the cell. If the tension is not well controlled, it will lead to layer-by-layer misalignment of the cells due to unstable tension during the winding process of the cells; if the winding core is loose or too tight, it will directly affect the quality of the winding core of the battery, reduce the safety performance of the battery, and even greatly shorten the battery life. battery life. Invention content: [0003] The object of the present invention is to aim at the deficiencies of the prior art, to provide a battery pole piece tension swing arm mec...

AI Technical Summary

Problems solved by technology

If the tension is not well controlled, it will lead to layer-by-layer misalignment of the cells due to unstable tension during the winding process of the cells; if the winding core is loose or too tight, it will directly affect the quality of the winding core of the battery, reduce the safety performance of the battery, and even greatly shorten the battery life. battery life

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