A new type of lithium battery pole piece positioning intelligent welding device

Abstract

The invention belongs to the technical field of lithium batteries, and in particular relates to a novel intelligent welding device for pole piece positioning of lithium batteries, which includes a bottom plate, a cylindrical platform is installed on the bottom plate, a circular groove is opened on the upper surface of the cylindrical platform, and a circular groove is installed on the upper surface of the cylindrical platform A plurality of vertical plates, battery positioning rods are fixedly installed on the surface of the vertical plates; a pole piece positioning mechanism is installed on the cylindrical platform, an annular groove is opened on the upper surface of the cylindrical platform, and a welding mechanism is installed through the annular groove. The invention ensures that the center of gravity of the battery pack is stable, improves the stability of the battery pack during use and transportation, and avoids gaps between adjacent batteries. In each welding process of the present invention, the clamping adjustment mechanism drives the battery to rise and fall with a constant distance, and the initial height of the battery is consistent, so the end of each battery after welding can be guaranteed to be even, which is convenient for the installation of battery pole pieces.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a novel lithium battery pole piece positioning intelligent welding device. Background technique [0002] Lithium battery is a type of battery that uses lithium metal or lithium alloy as positive / negative electrode material and uses non-aqueous electrolyte solution. Lithium battery pack refers to connecting multiple lithium batteries in series or in parallel. The parallel battery pack requires the voltage of each battery. Similarly, the output voltage is equal to the voltage of one battery, and parallel battery packs can provide stronger current; series battery packs do not have too many requirements. In the manufacturing process of parallel lithium battery packs, one pole piece needs to be connected to one pole of each lithium battery by laser spot welding, and then the other pole piece is attached to the other pole of each lithium battery, and finally bolts...

AI Technical Summary

Problems solved by technology

[0003] At present, the following methods are mainly used when welding lithium batteries and pole pieces: manually place the pole pieces horizontally on the welding table, then place the solder on the pole pieces, and the operator holds the battery in one hand and the welding torch in the other. Welding, and then repeat welding the next one after welding one, until all the batteries are welded to the pole pieces. This method has the following problems in actual operation: (1) For cylindrical lithium battery packs, it is difficult to ensure that the batteries are placed manually. The batteries in the battery pack are evenly arranged, so it is difficult to ensure that the center of gravity of the battery pack is stable, which affects the stability of the battery pack in the later use and transportation process; and it is difficult to ensure that adjacent batteries are attached to each other in the process of manually placing batteries, and adjacent batteries Gaps are easy to appear between them, and in the later stage of the battery pack, each battery is likely to collide with each other during use, resulting in damage to the battery pack; (2) It is difficult to ensure that the negative ends of each battery are even after welding during the manual welding process, and the battery negative plate installation causes inconvenience

Images