Vacuum adsorption device of battery pole piece

Abstract

The invention provides a vacuum adsorption device of a battery pole piece, which is suitable for laser cutting operation and has simple structure and strong practicality. The device comprises a sealed cavity which is provided with vents communicated with a vacuum generator; the key point is that the top surface of the cavity is a plane substrate provided with plural adsorption through holes; the substrate is provide with an indent clearance groove along the cutting line of the battery pole piece; the cavity and the vacuum generator form a vacuumizing device; under the vacuumizing action of the vacuum generator, the battery pole piece can be tightly adsorbed on the substrate without lifting and bending or collapsing; the substrate is provided with the indent clearance groove along the cutting line of the battery pole piece, thus avoiding the uneven substrate as the substrate is cut and scratched when laser light beams cut the substrate during laser cutting, ensuring the cutting quality of subsequent battery pole pieces, and prolonging the service life of the substrate. The device has simple and reasonable structure, favorable adsorption effect and better popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to fixture equipment used in the production process of power battery pole pieces. Background technique [0002] The power battery pole piece used in hybrid or electric vehicles is to uniformly coat the lithium iron phosphate material on both sides of copper foil (negative electrode) and aluminum foil (positive pole), and then cut the pole piece into a specific shape by cutting equipment. At present, most of the cutting equipment used in domestic automobile manufacturers adopts punching and rolling cutting equipment. The side powder is seriously dropped, which seriously affects the quality of the battery pole piece. In addition, the dies in these two cutting devices need to be replaced frequently, which is not conducive to large-scale continuous production, and also increases the maintenance cost of the equipment in the later stage. [0003] Fiber laser...

AI Technical Summary

Problems solved by technology

However, when the fiber laser is applied to the cutting of the battery pole piece, due to the limitation of the jig for placing the battery pole piece, the copper foil (negative pole) and aluminum foil (positive pole) of the battery pole piece will warp or collapse, causing the pole piece The surface is uneven, so that in the process of laser cutting battery pole pieces, the depth of the scale is inconsistent, which greatly affects the cutting effect, so that the laser cutting method cannot be applied to the production of battery pole pieces

Images