Lithium battery roll core pole piece coating detection device and detection method thereof

Abstract

The invention discloses a lithium battery roll core pole piece coating detection device and a detection method thereof.The detection device comprises a detection platform, a roll core tray, two detection mechanisms and an external detection host, the roll core tray and the two detection mechanisms are arranged on the detection platform, and the roll core tray is located between the two detection mechanisms; each detection mechanism comprises a linear module fixed to the detection platform and a 3D camera fixed to a linear module sliding block, the two linear modules are parallel to each other, lenses of the two 3D cameras horizontally face the position over the roll core tray, and driving mechanisms of the two linear modules and the two 3D cameras are connected with the detection host. According to the detection device, the 3D camera is adopted to detect the coating distance of the pole pieces, the 3D camera is low in maintenance cost, the detection view can cover the thickness of the roll core, the coating distance between all layers of pole pieces of the roll core can be detected, the detection accuracy is high, the consistency of the coating distance of the qualified roll core is ensured, and the quality of a lithium battery finished product is improved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery winding core pole piece wrapping detection device and a detection method thereof. Background technique [0002] At present, in the assembly process of lithium-ion batteries, independent X-Ray equipment is used to detect the cladding distance between the pole pieces of the winding core. The innermost pole piece of the core cannot be imaged and recognized, resulting in undetectable; secondly, due to the limitation of the life of the light pipe, the penetrating power of the light pipe will be significantly weakened after about one year of use, and it cannot penetrate the pole piece, resulting in the innermost pole piece of the winding core. It cannot be recognized by imaging and cannot be detected normally. Eventually, the poorly coated cores cannot be selected and flowed into the subsequent process to be assembled into a finished lithium battery. This li...

AI Technical Summary

Problems solved by technology

[0002] At present, in the assembly process of lithium-ion batteries, independent X-Ray equipment is used to detect the coating distance between the winding core pole pieces. The pole piece in the innermost layer of the core cannot be identified by imaging, resulting in the failure of detection; secondly, due to the limitation of the life of the light tube, the penetrating power of the light tube is obviously weakened after about one year of use, and it cannot penetrate the pole piece, resulting in the failure of the pole piece in the innermost layer of the winding core. It cannot be identified by imaging, and cannot be detected normally. Eventually, the winding cores with poor coating cannot be selected out, flow into the post-process, and be assembled into finished lithium batteries. There is a risk of short circuit when using this lithium battery, which seriously affects the quality of lithium batteries.

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