Battery cell winding device

Abstract

The invention provides a battery cell winding device, and relates to the technical field of lithium battery production equipment. The battery cell winding device comprises a mounting base, a revolution base, a winding needle mechanism, a winding needle shaft assembly, a transmission structure and a winding needle motor; and the revolution base is rotationally connected to the mounting base, the winding needle shaft assembly comprises a sleeving outer shaft and a sleeving inner shaft, a sleeve joint outer shaft is rotationally connected to the revolution base, a sleeve joint inner shaft is coaxially connected with the winding needle mechanism, the sleeve joint inner shaft is arranged in the cup joint outer shaft, the sleeve joint inner shaft is suitable for moving in the axial direction of the sleeve joint outer shaft to drive the winding needle mechanism to move in the axial direction, the winding needle motor is connected with the revolution base, and an output shaft of the winding needle motor is in driving connection with the sleeve joint outer shaft through a transmission structure. The diameter of the winding needle shaft assembly can be machined to be large, and compared with a slender shaft assembly matched with a traditional through motor, the battery cell winding device is advantageous in that the winding needle shaft assembly is higher in strength and not prone to being broken, and the concentricity of the winding needle mechanism, the sleeving inner shaft and the sleeving outer shaft can be easily guaranteed.

Description

technical field [0001] The invention relates to the technical field of lithium battery production equipment, in particular to a battery winding device. Background technique [0002] At present, in the production process of lithium battery cells, the needle winding mechanism of the winding equipment is usually required to wind the separator. Most of the existing needle rolling mechanisms are directly driven by a through motor. Specifically, the outer shaft and the inner shaft are fitted together. The inner shaft is sleeved inside the outer shaft and connected and fixed with the front-end needle rolling mechanism. It needs to be inserted into the through-motor and then driven by the through-motor to realize the rotation of the needle winding mechanism. The inner shaft is used to move axially in the outer shaft to realize the needle insertion and withdrawal action of the needle-winding mechanism. Due to the limited space in the through-motor, the inner and outer shafts are in t...

AI Technical Summary

Problems solved by technology

Most of the existing needle rolling mechanisms are directly driven by a through motor. Specifically, the outer shaft and the inner shaft are fitted together. The inner shaft is sleeved inside the outer shaft and connected and fixed with the front-end needle rolling mechanism. It needs to be inserted into the through-motor and then driven by the through-motor to realize the rotation of the needle winding mechanism. The inner shaft is used to move axially in the outer shaft to realize the needle insertion and withdrawal action of the needle-winding mechanism. Due to the limited space in the through-motor, the inner and outer shafts are in the process of making In the process, the design is generally slender, resulting in low strength and easy to break

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