Method for determining position of short circuit point of roll core

Abstract

The invention discloses a method for determining the position of a short circuit point of a roll core, which comprises the following steps of unfolding the roll core to form a first detection section, and separating at least one of a positive plate and a negative plate in the first detection section from a first diaphragm between the positive plate and the negative plate, acquiring electrical characteristics of the roll core and determining whether a short circuit point exists in the first detection section according to the electrical characteristics, and if the first detection section does not have the short circuit point, continuing to unfold the roll core so as to repeat the steps until it is determined that the currently unfolded detection section has the short circuit point. The detection accuracy of the short circuit point in the roll core is improved, and the detection efficiency is also improved.

Description

technical field [0001] The invention relates to the technical field of battery detection, in particular to a method for determining the position of a winding core short-circuit point. Background technique [0002] A short circuit inside the battery core will cause the internal temperature to rise, and then burn through the diaphragm, and even cause serious consequences such as fire and explosion of the battery. Therefore, technicians need to find the short circuit point inside the battery core to analyze the cause of the short circuit. The existing method It is to directly disassemble the battery core, unfold the pole group of the battery core, and determine the position of the short-circuit point by visually observing the abnormalities on the pole group, which means that it is necessary to find the short-circuit point on the entire unfolded pole group, so the work The quantity is relatively large, and when the short-circuit point is small, the position of the short-circuit ...

AI Technical Summary

Problems solved by technology

[0002] A short circuit inside the battery core will cause the internal temperature to rise, and then burn through the diaphragm, and even cause serious consequences such as fire and explosion of the battery. Therefore, technicians need to find the short circuit point inside the battery core to analyze the cause of the short circuit. The existing method It is to directly disassemble the battery core, unfold the pole group of the battery core, and determine the position of the short-circuit point by visually observing the abnormalities on the pole group, which means that it is necessary to find the short-circuit point on the entire unfolded pole group, so the work The quantity of the short-circuit point is relatively large, and when the short-circuit point is small, the position of the short-circuit point cannot be determined by the naked eye. In addition, due to the strong subjectivity of people, it may cause misjudgment only by observing the position of the short-circuit point with the naked eye.

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