Pole piece coating thickness online detecting system and detecting method

Abstract

The invention discloses a pole piece coating thickness online detecting system, which is applied to a coating machine. The pole piece coating thickness online detecting system comprises thickness detecting equipment and a control system; the control system comprises a host computer, a signal processing unit, an operating interface and a control box; two sets of the thickness detecting equipment are respectively arranged in front of and behind the coating machine; the thickness detecting equipment comprises a beta-ray emitting device, a beta-ray receiving device and driving devices; the driving devices are in vertical symmetrical arrangement and respectively drive the beta-ray emitting device and the beta-ray receiving device; the signal processing unit acquires data of the thickness detecting equipment and transmits the data to the host computer for performing analysis processing, judging whether to regulate a pump speed and a blade, and performing pole piece coating thickness cycle control. According to the pole piece coating thickness online detecting system, online measurement of pole piece coating thickness is realized; process parameters can be regulated in time; the stability and the consistency of the coating thickness during a coating process are effectively ensured; the production efficiency and the continuity of a production line are improved.

Description

technical field [0001] The invention relates to the field of power battery production and manufacturing, in particular to an online detection system and detection method for the coating thickness of a pole piece that can quickly and accurately detect the coating thickness parameters of the pole piece to be tested online. Background technique [0002] Lithium-ion batteries have the advantages of high voltage, high energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices, but also in large and medium-sized electric devices such as electric vehicles, electric bicycles, and electrical tools. . The battery pole piece is an important part of the lithium-ion battery and is the core of the lithium-ion battery. The thickness of the lithium battery pole piece directly affects the quality of the battery. It is necessary to control the coating thickness within a certain range during production, otherwise it will affect the quality of ...

AI Technical Summary

Problems solved by technology

[0003] At present, most lithium-ion battery manufacturers measure the thickness of the pole pieces manually, offline, and by sampling. The detection methods are outdated, the efficiency is low, and the feedback delay affects the efficiency and continuity of production.

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