Method, device, storage medium and electronic equipment for sudden battery internal short circuit diagnosis

Abstract

The present disclosure relates to a method, device, storage medium and electronic equipment for diagnosing a sudden internal short circuit of a battery, belonging to the field of batteries. The method includes: collecting the voltage and current of the battery during operation according to a preset sampling period; According to the collected voltage and current, determine the target battery information of the battery in each sampling period, the target battery information includes current value, voltage value, sliding current difference, sliding voltage difference, sliding current slope, sliding voltage slope , at least one of the voltage difference and the state of charge of the battery, the voltage difference is the voltage difference between the actual voltage and the estimated voltage; according to the target diagnosis strategy corresponding to the working condition of the battery, and the battery is in the multiple target battery information in multiple sampling periods under working conditions, and diagnose the battery to determine the internal short circuit risk level of the battery.

Description

technical field [0001] The present disclosure relates to the field of batteries, and in particular, to a method, device, storage medium and electronic equipment for diagnosing sudden battery internal short circuits. Background technique [0002] Batteries have been widely used in consumer electronics, medical equipment, engineering tools, base stations, new energy vehicles, aircraft, ships, energy storage power stations, etc., but many safety accidents have occurred around the world, a large part of which is due to It is caused by the internal short circuit of the battery. However, in related technologies, it is often used to diagnose the short circuit in the battery and give an early warning based on the voltage difference, temperature difference, and SOC (State of Charge, battery state of charge) difference between cells. However, these methods can only diagnose It takes a long time to develop an internal short circuit, and the algorithm takes a long time, so it is impossi...

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Problems solved by technology

[0002] Batteries have been widely used in consumer electronics, medical equipment, engineering tools, base stations, new energy vehicles, aircraft, ships, energy storage power stations, etc., but many safety accidents have occurred around the world, a large part of which is due to It is caused by the internal short circuit of the battery. However, in related technologies, it is often used to diagnose the short circuit in the battery and give an early warning based on the voltage difference, temperature difference, and SOC (State of Charge, battery state of charge) difference between cells. However, these methods can only diagnose It takes a long time to develop an internal short circuit, and the algorithm takes a long time, so it is impossible to carry out early warning and diagnosis of sudden internal short circuit

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