Batteries plate thickness on-line measurement method utilizing baseband thickness for self-calibration

Abstract

Disclosed is an on-line measurement method of battery pole plate thickness, which utilizes the thickness of a base band for automatic calibration, and the invention relates to a method for on-line measurement of battery pole plate thickness by adopting the laser differential detection. The method overcomes the defect of low measuring precision of the prior art due to the failure of on-line real-time automatic calibration. The method adopts the following steps that: a battery pole plate moves on a coated paper production line with constant speed; two laser displacement transducers arranged above the upper surface and under the lower surface of the battery pole plate respectively measure the distance value thereof relative to the battery pole plate; the program in a computer is controlled for calculating base band sampled data and SUMB of the two laser displacement transducers at the same time; the program in the computer is controlled for calculating hits in a coating area and SUMM of the two laser displacement transducers at the same time; and the program in the computer is controlled for calculating the thickness of the battery pole plate according to the formula of (SUMM-SUMB) xK+Db, wherein K is a constant; and Db is the base band thickness.

Description

On-line measurement method of battery plate thickness using baseband thickness for self-calibration technical field The invention belongs to the field of lithium-ion battery pole plate processing, and in particular relates to a method for realizing on-line measurement of battery pole plate thickness by using laser differential detection. Background technique The battery plate is a material for the production of lithium-ion compound batteries. As shown in Figure 2, it is a continuous strip product with a thickness of only tens of microns to 500 microns. Its surface is divided into layers coated with lithium-ion compounds. Cloth part 1 and base tape part 2 not coated with substance. It is the core material for the production of batteries, and the control accuracy of the thickness of the battery plate directly affects the quality of battery products. Therefore, accurate real-time on-line measurement and control of the thickness of the battery plate has very important practic...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide an online measurement method for battery plate thickness using baseband thickness self-calibration to overcome the defect of low measurement accuracy due to the inability to realize online real-time automatic calibration in the prior art

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