Method and device for measuring short-circuit resistance value in battery and computer readable storage medium

Abstract

The invention provides a method and a device for measuring a short-circuit resistance value in a battery and a computer readable storage medium. The method comprises the steps that extrusion equipment is controlled to extrude a simulation battery in a test loop so that short-circuit resistance can be formed in the simulation battery, the test loop is formed by connecting the simulation battery and a true battery in series, metal particle foreign matter is arranged in the simulation battery, and no metal particle foreign matter exists in the true battery; a short-circuit current in the test loop is acquired; voltages at two ends of the simulated battery are acquired; the resistance value of the short-circuit resistor is determined according to the short-circuit current and the voltage at the two ends of the simulated battery; and the resistance value of the short-circuit resistor is equivalent to the internal short-circuit resistance value of the real battery. According to the scheme, the resistance value of the short-circuit resistor in the simulated battery is equivalent to the internal short-circuit resistance value of the real battery, so that the internal short-circuit resistance value of the real battery is measured.

Description

Technical field [0001] The present application relates to the field of lithium ion, in particular, to a measurement method, apparatus, computer readable storage medium, and a processor, a short-term resistance value in a battery. Background technique [0002] The internal short circuit is one of the most common incentives in the thermal out of control of lithium ion batteries, and is a common link for mechanical abuse, thermal abuse, and electro-abuse leading to battery thermal out of control. Mechanical abuse causes battery deformation, foreign matter invasion, resulting in a connection between the positive and negative electrical poles, causing drastically inner short circuit; thermal abuse causes a large-scale shrinkage of the diaphragm, resulting in direct contact of the battery positive and negative electrode, causing severe inside Short-circuit; electro-abuse causes internal metal precipitation, such as copper, lithium, etc., and constantly precipitated metal through diaphr...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of this application is to provide a method, device, computer-readable storage medium and processor for measuring the internal short-circuit resistance of a battery, so as to solve the problem that the internal short-circuit resistance of a lithium battery with built-in metal particle foreign matter cannot be measured in the prior art question

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