The invention provides a
lithium battery electric box and
energy storage cabin shared perfluorohexanone fire extinguishing method, which comprises the following steps that S1, during use, a thermosensitive release device is mounted in a
lithium battery electric box, and when the
internal temperature of the
lithium battery electric box reaches a set value of the thermosensitive release device, the thermosensitive release device is broken; s2, an
infusion pump and a three-way valve are started, and the
infusion pump pumps the perfluorohexanone fire extinguishing liquid in the
liquid storage tank to a liquid conveying main
pipe; and S3, injecting the perfluorohexanone fire extinguishing liquid in the second liquid conveying
branch pipe into the
lithium battery electric box through a liquid outlet
pipe so as to realize fire extinguishing operation in the
lithium battery electric box. S4, when the whole
energy storage battery cabin has a fire disaster, the liquid in the
liquid storage tank is pumped into the pipeline through the three-way valve by the liquid pump, wherein the effects of
oxygen isolation and continuous cooling are achieved; according to the invention, internal fire extinguishing can be carried out on the
lithium battery electric box when the lithium battery electric box is in
thermal runaway, and internal fire extinguishing can also be carried out on the
energy storage cabin when the energy storage battery cabin is in a fire disaster.