The invention discloses an automatic
lithium battery fire extinguishing
system which is characterized by comprising a fire pre-
warning system, a battery
management system connected with the fire pre-
warning system, a battery module connected with the battery
management system and a fire extinguishing device connected with the fire pre-
warning system, wherein the fire extinguishing device comprisesan extinguishing agent
bottle group, an
electromagnetic valve, an electromagnetic driving device, a distribution valve, a local release pipeline and a local
nozzle at the final end, and the
electromagnetic valve and the electromagnetic driving device are arranged on a connecting line between the fire pre-warning
system and the extinguishing agent
bottle group. The automatic
lithium battery fire extinguishing
system has the advantages that rapid full flood protection for a protection area is added, and the functions of fast fire extinguishing and overall protection are realized; multiple timesof starting to extinguish fire in a
small range is achieved, a
lithium battery fire is contained, and meanwhile the
pollution of other battery modules caused by the traditional large-scale spraying of an extinguishing agent is avoided; mechanical emergency start is added, and the fire extinguishing system can be started through emergency operation when personnel find a fire; and BMS
signal collecting and
processing is added, so the fire pre-warning ability is improved, and the fire pre-warning response speed is increased.