Areal density synchronous measurement method, device, equipment and medium

By acquiring and compensating for the belt length of the areal density meter, the problem of poor synchronization of the areal density meter in lithium battery production was solved, enabling accurate measurement of coating areal density and improving detection accuracy.

CN119555541BActive Publication Date: 2026-02-17CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510073949.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2026-02-17
Estimated Expiration
2045-01-17

AI Technical Summary

Technical Problem

In the existing technology, during the lithium battery production process, when measuring the surface density of single and double-sided coatings of dry film lithium battery electrodes, the poor synchronization of the two surface density meters leads to insufficient accuracy in coating surface density detection.

Method used

By obtaining the tape lengths L1 and L2 between the No. 1 and No. 2 surface density meters, the No. 2 surface density meter is compensated using the compensation value △L=(L1-L2)/2 to make it coincide with the scanning trajectory of the No. 1 surface density meter, ensuring detection at the same position, and providing an alarm reminder when necessary.

Benefits of technology

It enables accurate calculation of the surface density of lithium battery electrode coatings, avoids errors caused by simultaneous scanning with multiple measuring instruments, and improves detection accuracy.

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Abstract

The application discloses a kind of area density synchronous measurement method, device, equipment and medium, wherein, area density synchronous measurement method includes: obtaining the running length L1 between the first area density instrument to the second area density instrument when synchronously running;Obtain the running length L2 between the first area density instrument to the second area density instrument when actually running;According to L1 and L2, determine the compensation value ΔL of the second area density instrument, wherein, ΔL=(L1-L2) / 2.In this way, in the actual measurement process, the second area density instrument is compensated by compensation value ΔL, so that the scanning track of the first area density instrument and the second area density instrument coincides, so that the area density of coating can be accurately calculated.
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