Detecting and sorting method for assembled lithium ion power batteries

Abstract

The invention relates to a detecting and sorting method for assembled lithium ion power batteries. The method comprises the following steps: when defective products discharged via detection are delivered to a judging station on a defective product channel conveying belt, performing the following operation: if the defective products are short-circuit defective products or open-circuit defective products according to judgment, stopping the conveying belt and outputting a first alarm audio signal; if the defective products are covering defective products according to judgment, conveying the covering defective products to a defective product station for storing through the conveying belt. The detecting and sorting method is reliable in performance and high in generality, and can effectively distinguish the problems of short-circuit defective products, open-circuit defective products and covering defective products in a defective product channel, so that the defective product sorting efficiency is increased, and unnecessary waste is reduced.

Description

Technical field [0001] The invention belongs to the technical field of lithium-ion power battery production, and specifically relates to a detection and sorting method for lithium-ion power batteries after assembly. Background technique [0002] At present, lithium-ion power batteries have the advantages of high voltage, high specific energy, many cycles of use, and long storage time. They are not only widely used in portable electronic devices, but also widely used in electric vehicles, electric bicycles, and power tools. In terms of medium-sized electric equipment, power batteries in particular are currently the main development direction of major battery manufacturers. [0003] Lithium-ion battery assembly work flow is specifically divided into five processes including electrode group supply, electrode group insertion, height test, short circuit, open circuit test, defective product discharge, and electrode group blanking; in the assembly process, the assembled battery needs to ...

AI Technical Summary

Problems solved by technology

[0004] In the actual use process, the defective products detected by short circuit, open circuit and buckle cover are sorted out and stored in the same channel, and cannot be accurately distinguished when manually sorted out, because the defective product channel of lithium-ion power batteries does not distinguish short circuit, open circuit defective products and buckle The device for covering defective products, when the defective products are placed in the defective product channel by the robot, with the increase in the number of defective products and the pick-up and placement of the defective products by relevant personnel, it is impossible to judge the cause of the defective products, which affects the subsequent processing of defective products , causing unnecessary losses

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