An automatic detection line and method for 18650 lithium battery

Abstract

The invention discloses a type 18650 lithium ion battery's automatic detection line and the method. The detection line comprises a lithium ion battery appearance and size detection module, an electric property detection module and a leakage and code spraying module with the functions of detecting the appearance and size, the electrical property and the sealing performance of the lithium ion battery respectively. The detection line is also provided with an automatic moving device, which ensures that all working procedures function in an organized order. The electrical property detection module is provided with a lithium ion battery internal resistance detection device and a charging-and-discharging device with the functions of detecting the lithium ion battery internal resistance and the charging and discharging properties respectively. The leakage and code spraying module is provided with a leakage detection device and a code spraying device with the functions of detecting the sealing performance of the lithium ion battery and the spraying of a qualified code onto a qualified lithium ion battery respectively. Among the modules of the detection line are recycling boxes for defective lithium ion batteries. At the tail part of the detection line is a box for qualified products. Simple in structure and reliable in performance, the functions of the detection line are well improved and stable enough to greatly save labor force.

Description

technical field [0001] The invention relates to an automatic detection line for 18650 lithium batteries and a method thereof. technical background [0002] Lithium-ion battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Due to the advantages of light weight, large capacity, and no memory effect, lithium-ion batteries are widely used in electronic equipment, vehicles, national defense and aerospace. [0003] The 18650 lithium battery is a standard lithium-ion battery set by Japan's SONY company in order to save costs. 18 means a diameter of 18mm, 65 means a length of 65mm, and 0 means a cylindrical battery. At present, the lithium battery pack of electric vehicles is composed of a large number of 18650 lithium batteries connected in series and parallel, which has very high requirements on the safety and electrical performance of lithium batteries. Unqualified battery indicators ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, most of the detection of lithium batteries is completed by manual sampling. This method has low detection efficiency, low penetration rate of battery detection, and difficult to guarantee the pass rate of lithium batteries. As a result, battery products on electric vehicles and other electronic equipment There are serious safety hazards, which may pose a huge threat to the safety of people's property and social order. Therefore, it is imminent to design a complete lithium battery testing production line and perfect lithium battery testing methods

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