According to the
energy storage power supply fire-fighting
system and the control method thereof, a pipeline
assembly is arranged between a fire-fighting host and batteries in a cluster of battery modules, the pipeline
assembly comprises a first-stage pipeline, a second-stage pipeline and a plurality of third-stage pipelines, the first-stage pipeline is connected to the fire-fighting host, each third-stage pipeline is correspondingly connected to a single battery, and the second-stage pipeline is connected to the fire-fighting host; a
branch control valve is arranged on the third-stage pipeline; dividing the plurality of clusters of battery modules into at least one group, wherein at least two clusters of battery modules are arranged in each group; the primary pipelines of the at least two fire-fighting hosts in each group are communicated through a connecting pipeline; through the arrangement of the
branch control valves, accurate fire fighting and extinguishing can be carried out on batteries which are only subjected to
thermal runaway, the storage amount of standby fire fighting liquid is increased by connecting other fire fighting main machines, and each fire fighting main
machine serves as a main fire fighting
bottle of the corresponding cluster battery module and also serves as a standby fire fighting
bottle of other cluster battery modules; and by starting other clusters of fire-fighting main machines, it is guaranteed that fire-fighting liquid in the fire-fighting pipeline is always sufficient and has enough pressure.