Energy storage battery management system and fire extinguishing system linkage control method and system

The invention discloses a linkage control method and system for an energy storage battery management system and a fire extinguishing system. The battery management system collects stack-level temperature, data required for cluster-level thermal runaway judgment and a fire alarm signal; the battery management system judges that cluster-level thermal runaway is continuously effective in a set time delay, and sends a third fire fighting measure starting instruction and a thermal runaway position to the fire fighting system; when the battery management system judges that the cluster-level thermal runaway is not continuously effective within the set time delay and judges that the stack-level temperature data is not lower than a set threshold value, a first fire fighting measure starting instruction is sent to a fire fighting system; in the fire-fighting process, the battery management system judges that the stack-level temperature data is lower than a set threshold value and sends a first fire-fighting measure clo