A temperature compensation method for surface density measuring instrument

Abstract

The invention relates to a temperature compensation method for an areal density measuring instrument. In the process of producing pole pieces by a coating machine, the areal density measuring instrument is used to detect the areal density of the pole pieces in real time. In the process of detecting the areal density, due to The influence of temperature has a great influence on the measurement results of the surface density of the pole piece. Perform temperature compensation according to the following steps to improve the accuracy of the surface density measuring instrument; determine the calculated temperature T of the upper air layer in the measurement area s and the calculated temperature T of the lower air layer x ; Calculate the density ρs of the upper air layer and the density ρx of the lower air layer in the scanning measurement area; calculate the surface density correction factor K2 of the scanning measurement area; obtain the surface density M that needs to be compensated at the top of the pole piece 1bs and the areal density M to be compensated at the lower part of the pole piece 1bx ; Step 5: Obtain the areal density M of the pole piece measured by the measuring instrument after temperature compensation. The invention improves the measurement accuracy by performing temperature compensation on the surface density calculation method.

Description

technical field [0001] The invention relates to the technical field of temperature compensation, in particular to a temperature compensation method for a surface density measuring instrument. Background technique [0002] Positive and negative electrodes are the most important components of lithium batteries, and their quality directly affects the actual use of the entire battery and even the safety of users. Therefore, the manufacturing quality of the electrodes, especially the weight of materials per unit area ( That is, surface density) detection and control is particularly important. The areal density measuring instrument for lithium battery positive and negative electrodes is a high-precision instrument specially used to detect the surface density of the electrode. It not only needs to realize the online real-time detection of the electrode produced by the coating machine, but also its detection accuracy needs to be controlled within the true value. Within ±0.1%; when ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem of inaccurate measurement results of the areal density measuring instrument due to temperature rise, and provides a temperature compensation method for the areal density measuring instrument, which improves the measurement accuracy by performing temperature compensation on the calculation method of the areal density