Soft pack battery size testing method and system

Abstract

The invention relates to a method and system for measuring the size of a flexible-packaging battery. The method includes the following steps: selecting a measuring region, arranging a plurality of pairs of longitudinal and transverse distance measurement laser heads on the upper side, the lower side, the left side and the right side of the measuring region respectively, respectively measuring the distances between corresponding positions of the surface of the battery and the longitudinal distance measurement laser heads through the longitudinal distance measurement laser heads, respectively measuring the distances between corresponding positions of the surface of the battery and the transverse distance measurement laser heads through the transverse distance measurement laser heads, recording time periods from the time when light emitted by the paired opposite laser heads located on the upper side and the lower side and / or the left side and the right side of the measuring region is initially separated by the battery to the time when the light is initially coincided, and respectively calculating the length, the width and the thickness of the battery according to data including the distances and the time differences. Laser measuring is adopted for the measuring method, full-automatic measuring can be achieved, the measuring results are traceable in datum, disturbance of human factors can be removed during measuring, and due to multi-point measuring, the accuracy can be 0.1 micrometer.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a method and system for testing the size of a pouch battery. Background technique [0002] With the continuous development of electronic products, lithium-ion batteries have been widely used, and the current electronic products are constantly being updated, and the requirements for lithium-ion battery products are also getting higher and higher. At present, in the entire battery industry, the product quality of each battery manufacturer is different, and 90% of the manufacturers are in the low-end level. For some high-demand electronic products, the battery performance cannot meet the requirements. For example: in the early days, it was mainly Based on Bluetooth, the performance requirements for batteries are not very high. As long as enterprises with a certain amount of funds can invest in the lithium-ion battery industry, and from the current market point of view, the main ele...

AI Technical Summary

Problems solved by technology

However, the existing measuring equipment is usually a vernier caliper, etc., because the outer packaging of the pouch battery is made of soft materials, it is not suitable for using these measuring equipment, the measurement results are easily affected by human factors, and the efficiency of this traditional testing equipment is low. It is labor-intensive and there are many chances of misoperation

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