Power battery tab die-cutting and winding integrated machine

Abstract

The invention discloses a power battery tab die-cutting and winding integrated machine. The power battery tab die-cutting and winding integrated machine comprises a positive electrode unwinding tab cutting unit, a negative electrode unwinding tab cutting unit, a separator unwinding unit and a winding and formation unit, wherein the positive electrode unwinding tab cutting unit is used for completing die-cutting of a positive electrode plate, the negative electrode unwinding tab cutting unit is used for completing die-cutting of a negative electrode plate, the separator unwinding unit is used for providing an upper separator, the winding and formation unit is used for completing winding and formation of a battery cell, the positive electrode unwinding tab cutting unit, the negative electrode unwinding tab cutting unit, an upper separator unwinding unit and a lower separator unwinding unit are matched and are matched with the winding and formation unit so that a positive electrode platefilm of which die-cutting is completed, separators and a negative electrode plate film of which die-cutting is completed are sequentially arranged at intervals and synchronously enter to the winding and formation unit, and the winding and formation unit is used for winding and formation. According to the scheme given by the invention, two important processes of a battery cell formation technologyare organically combined, the production efficiency of a product and the product performance are greatly improved, so that the winding efficiency and the finished rate of a battery cell are greatly improved.

Description

technical field [0001] The invention relates to power battery technology, in particular to the winding technology of power battery cells. Background technique [0002] With the development of various electronic devices, the use of lithium batteries is becoming more and more widespread, and the demand for lithium batteries is increasing, which puts forward higher requirements for the production machinery of lithium batteries. [0003] Lithium-ion power battery production technology is the basis of modern HEV (hybrid electric vehicle), EV (electric vehicle) application technology and engineering technology. The special equipment (process equipment) equipped for the production of power batteries is the support for the industrialization of lithium-ion power batteries. In 2020, HEVs will account for 50% of the total number of cars in the world. [0004] Flexible packaging lithium-ion batteries have been rapidly promoted because of their light weight and small size. There are tw...

AI Technical Summary

Problems solved by technology

However, the entire feeding adjustment process takes a long time, and if the adjustment is not accurate, it will cause the waste of the entire roll of pole piece coil

[0010] Based on the above situation, it will greatly affect the efficiency and yield of cell winding

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