Pole piece stacking equipment and battery production line

Abstract

The pole piece stacking equipment comprises a lamination jig, a lamination station and a conveying part, the lamination jig comprises a lamination platform and a plurality of pressing knives, opening and closing assemblies are arranged on the two sides of the lamination station, each pressing knife comprises a knife body and a follow-up part, each opening and closing assembly comprises a driving part and an acting part, and the driving parts are connected with the follow-up parts. The conveying component conveys the lamination jig to move on the lamination station, so that the follow-up component of the opening and closing assembly is in contact with the action component of the pressing knife, the driving component drives the action component to move, the action component drives the follow-up component to move, and opening and pressing of the pressing knife can be achieved. The opening and closing assemblies are arranged on the two sides of the lamination station, the pressing cutter is arranged on the lamination platform, the opening and closing assemblies serving as a power source and the pressing cutter are arranged in a split mode, the movement mass and inertia of the pressing cutter during opening and closing can be reduced, the load of the pressing cutter during opening and closing can be reduced, the stability of mechanical movement is guaranteed, and multiple pole pieces can be stacked and pressed at the same time; and the stacking efficiency of the pole pieces is improved.

Description

technical field [0001] The invention relates to the field of battery cell lamination production, in particular to a pole piece stacking device and a battery production line. Background technique [0002] Lithium batteries have many advantages such as high energy, no memory effect, no pollution, small self-discharge, and long cycle life, and are widely used in various equipment. In the process of stacking the pole pieces of the battery cell, a pressing knife needs to be used to press the pole piece and the diaphragm to ensure the stability of the pole piece and the diaphragm during the stacking process. The existing pole piece stacking equipment usually uses a cam mechanism to control the pressure. The opening and closing of the knife, the cam mechanism and the pressing knife are arranged on the pole piece stacking equipment. When opening and closing the pressing knife, the pole piece stacking equipment needs to bear a large load, and the stability of the pressing knife openi...

AI Technical Summary

Problems solved by technology

During the stacking process of the pole piece of the battery, it is necessary to use a press knife to compress the pole piece and the diaphragm to ensure the stability of the pole piece and the diaphragm during the stacking process. The existing pole piece stacking equipment usually uses a cam mechanism to control the pressure. The opening and closing of the knife, the cam mechanism and the pressing knife are set on the pole piece stacking equipment. The pole piece stacking equipment needs to bear a large load when opening and closing the pressing knife, and the stability of the opening and closing of the pressing knife is low; due to the motion inertia and load The existing pole piece stacking equipment cannot stack and compress multiple pole pieces at the same time, which affects the stacking efficiency of pole pieces

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