Square battery core producing and winding equipment

Abstract

The invention discloses square battery core producing and winding equipment, which comprises two groups of membrane unwinding devices, two groups of production devices and a winding device, wherein each production device comprises two groups of pole piece unwinding mechanisms, two groups of lug welding mechanisms and two groups of opposite pasting mechanisms; a controller controls one pole piece unwinding mechanism, one lug welding mechanism and one opposite pasting mechanism to be combined on a pole piece to carry out production of an even number of lugs, and controls another pole piece unwinding mechanism, another lug welding mechanism and another opposite pasting mechanism to be combined on the pole piece to carry out production of an odd number of lugs; each lug welding mechanism is provided with a lug dedusting component and a lug detection component; the winding device comprises at least one square winding needle component and a shaping mechanism; positive and negative pole piecestrips, provided by the production devices, with the lugs and two membrane strips provided by the membrane unwinding devices are clamped on the square winding needle component of the winding device;and the shaping mechanism opens the square winding needle component to wind and mold square battery cores. According to the square battery core producing and winding equipment, high-quality winding and fast and efficient hot-pressing of square batteries of different specifications can be achieved.

Description

technical field [0001] The invention relates to the technical field of electric core production auxiliary equipment, in particular to a square electric core sheet-making and winding equipment. Background technique [0002] As a device for storing charge, square lithium battery is widely used in various electrical equipment. With the popularity of square batteries and the rise of automotive power batteries in recent years, the contradiction between battery life and battery capacity has become increasingly prominent. Because the structure of the prismatic battery is relatively simple, the weight of the overall accessories is light, and the relative energy density is relatively high, the market demand is very large. [0003] With the increasing market demand, there are more and more specifications and models of square batteries, which makes the winding process of square batteries more and more complicated. In the production process of the existing square lithium battery cells...

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Problems solved by technology

[0004] Therefore, the production efficiency of the existing square cell winding equipment is generally low

[0005] At the same time, because the shape of the square cell is specific, the torque of the conveyor belt and rotation of the winding machine is constant, so that the two ends of the square cell are subjected to greater force during winding, and the force on the flat part is smaller, so Both ends are prone to extrusion deformation, which affects the winding quality of the battery core

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