Production line for lithium batteries, positioning detection method and welding device for tab conductive handles

Abstract

The invention relates to the field of production equipment for tab conductive handles, and particularly relates to a production line for lithium batteries, a positioning detection method and a welding device for the tab conductive handles. The positioning detection method for the tab conductive handles comprises the steps that tab conductive handle alignment lines are taken on the tab conductive handles, a battery cell alignment line is taken on a battery cell, and the tab conductive handle alignment lines and the battery cell alignment line are perpendicular to the distribution direction of the tab conductive handles and the battery cell under the condition that the battery cell is aligned with the tab conductive handles; and images of the tab conductive handles and the battery cell are acquired through an image acquisition device, the depth of parallelism of the tab conductive handle alignment lines and the battery cell alignment line is measured through an image processing system, the position deviation of the tab conductive handles and the battery cell is measured according to the depth of parallelism, and whether the position deviation of the tab conductive handles and the battery core is within a set range is judged. According to the production line for lithium batteries, the positioning detection method and the welding device for the tab conductive handles, the alignment precision of the tab conductive handles and tabs on the battery cell can be adjusted by setting the value of the predefined deviation, and the problem that an existing welding method for the tab conductive handles cannot guarantee the alignment precision of the tab conductive handles and the tabs on the battery cell can be solved.

Description

technical field [0001] The invention relates to the field of production devices for tab conductive handles, in particular to a lithium battery production line, a positioning detection method for tab conductive handles, and a welding device. Background technique [0002] The pole ear conductive handle is a raw material for the production of lithium-ion polymer battery products, such as mobile phone batteries, notebook batteries, and electric vehicle power batteries used in daily life. The pole ear conductive handle is a metal conductor that leads out the positive and negative poles in the battery core. During the production process of lithium batteries, the position of the battery's positive and negative tabs on the welding station directly affects the welding effect. At present, in the production process of lithium batteries, the conductive handle of the tab is only set at the set position on the welding table through mechanical positioning, but due to mechanical vibration ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting the positioning of the tab conductive handle, so as to solve the problem that the current welding method of the tab conductive handle cannot guarantee the alignment accuracy of the tab conductive handle and the tab on the battery core; in addition, the present invention The purpose of the present invention is also to provide a tab conductive handle welding device that realizes the above-mentioned tab conductive handle positioning detection method; in addition, the purpose of the present invention is to provide a lithium battery production line using the above-mentioned tab conductive handle welding device

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