Passivation fire extinguishing and explosion suppression system and method for lithium battery energy storage system

An energy storage system and lithium battery technology, applied in fire protection equipment, fire rescue and other directions, can solve the problems that fire extinguishing system is difficult to quickly extinguish open fire, difficult to suppress re-ignition and explosion, etc., to achieve thermal runaway and thermal spread, convenient application, The effect of suppressing the explosion

Pending Publication Date: 2022-03-18
STATE GRID HUNAN ELECTRIC POWER +2
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  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to propose a passivation fire extinguishing and explosion suppression system and method for a lithium battery energy storage system, aiming to solve the technical problems that the fire extinguishing system in the prior art is difficult to quickly extinguish open flames and suppress recombustion and explosion

Method used

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  • Passivation fire extinguishing and explosion suppression system and method for lithium battery energy storage system
  • Passivation fire extinguishing and explosion suppression system and method for lithium battery energy storage system
  • Passivation fire extinguishing and explosion suppression system and method for lithium battery energy storage system

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no. 1 example

[0072] The first embodiment: the fire extinguishing anti-resurgence explosion suppression medium is a combination of 98% lithium passivation gas and 2% halogenated hydrocarbon gas; preferably, the lithium passivation gas adopts 40% N 2 and 60% CO 2 . Halogenated hydrocarbon gas adopts CBrF=CF 2 . The storage temperature of the high-efficiency fire extinguishing anti-resurgence anti-explosion medium is -10°C and the storage pressure is 4.0MPa. The medium gas for fire extinguishing, anti-resurgence, and explosion suppression is stored in a storage tank, which is cooled by a cooling system and kept at -10°C for a long time.

no. 2 example

[0073] Second embodiment: the fire extinguishing anti-resurgence explosion suppression medium is a combination of 98% lithium passivation gas and 2% halogenated hydrocarbon gas; preferably, the lithium passivation gas adopts 40% N 2 and 60% CO 2 . Halogenated hydrocarbon gas adopts CF 2 =CHCF 3 and CF 3 Mixed gas of Br, where CF 2 =CHCF 3 and CF 3 Br and 50% each. The present invention is applied to protect lithium battery energy storage system sites. The lithium battery energy storage system is composed of multiple battery clusters, each battery cluster is composed of multiple battery cabinets, and each battery cabinet includes multiple battery modules. A group is the smallest unit protected by the fire extinguishing system of the present invention.

[0074] In the first embodiment and the second embodiment, when the lithium battery catches fire, when the fire detection module 10 detects a fire signal, the high-efficiency fire extinguishing anti-resurgence anti-explos...

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Abstract

The invention provides a lithium battery energy storage system passivation fire extinguishing explosion suppression system and a lithium battery energy storage system passivation fire extinguishing explosion suppression method, the lithium battery energy storage system passivation fire extinguishing explosion suppression system comprises a fire hazard detection module for positioning a fire hazard position and sending a fire hazard generation signal, a fire extinguishing anti-after-combustion explosion suppression module and a control module for controlling the fire extinguishing anti-after-combustion explosion suppression module to open or close, the fire extinguishing, reburning prevention and explosion suppression module is used for rapidly extinguishing open fire and preventing battery reburning explosion and comprises a storage device used for storing a fire extinguishing, reburning prevention and explosion suppression medium, and the fire extinguishing, reburning prevention and explosion suppression medium is a combination of 90%-99.8% of lithium passivation gas and 0.3%-10% of halogenated hydrocarbon gas. The lithium passivation gas is one or a combination of two of nitrogen and carbon dioxide. Halogenated hydrocarbon gas in the fire-extinguishing, after-combustion-preventing and explosion-suppressing medium is adopted to quickly extinguish open fire at the initial stage, and spread and diffusion of the open fire are quickly prevented; and meanwhile, the lithium passivation medium passivates active lithium substances, absorbs heat, cools down, inhibits the generation of combustible and explosive gas, and simultaneously realizes three functions of efficient fire extinguishing, after-combustion prevention and explosion inhibition.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a passivation fire extinguishing and explosion suppression system and method for a lithium battery energy storage system. Background technique [0002] In 2020, my country proposed the grand goal of "carbon peaking in 2030 and carbon neutrality in 2060", and vigorously developed clean and low-carbon energy such as wind power and photovoltaics. However, wind power and photovoltaic energy are volatile and random, and large-scale energy storage is required. Lithium battery energy storage is an important type of energy storage system, accounting for 92% of the installed capacity of electrochemical energy storage. As of 2020, the cumulative installed capacity of lithium battery energy storage devices in my country has reached 13.6GW, and it is expected to reach 600GW in 2035, with a market size exceeding 2 trillion. [0003] Lithium battery energy storage systems a...

Claims

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Application Information

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IPC IPC(8): A62C3/16A62C31/00A62C37/00A62D1/06
CPCA62C3/16A62C37/00A62C31/005A62D1/06Y02E60/10
Inventor 陈宝辉吴传平周天念刘毓梁平陈杰
Owner STATE GRID HUNAN ELECTRIC POWER
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