Fire extinguishing system of perfluoro battery compartment

Abstract

The invention relates to the technical field of fire-fighting equipment, in particular to a fire extinguishing system of a perfluoro battery compartment. The fire extinguishing system comprises a fireextinguishing agent storing container, a bottle head valve I, a starting valve, a siphon, a fire extinguishing agent conveying pipeline, an agentia one-way valve, a pressure signaling device, a pipeline connecting component, a pneumatic pipeline, a gas one-way valve, a bottle head valve II, an electromagnet, a driving gas cylinder, a gas decompression machine, a pressure gage, a safe decompression device, a low-pressure sensor, an electrical circuit, a fire extinguishing system control device, a gas detector, a heat detector, a smoke detector, a UPS emergency power source, a mechanical emergency switch, an atomizer, and a box body. A fire extinguishing medium is perfluoro which is non-poisonous, colourless and with high insulation. The detectors (the gas detector, the heat detector, and the smoke detector) with high accuracy and multiple types are adopted, battery fires can be accurately and quickly detected. Automatic, manual and mechanical emergency stating modes are achieved, and therefore reliability, timeliness and accuracy of fire extinguishing system operation are guaranteed.

Description

technical field [0001] The invention relates to the technical field of fire fighting equipment, in particular to a fire extinguishing system for a perfluorohexanone battery compartment. Background technique [0002] The battery packs of new energy vehicles are composed of a large number of single batteries. After a single battery is thermally out of control, it will spread in the battery pack, which will easily lead to thermal runaway of the entire battery pack. From the safety runaway mechanism of the battery, it can be seen that The burning of batteries is a long-term chemical reaction process, and the out-of-control batteries are all in battery packs with high protection levels, so it is difficult to fire and rescue them. The thermal runaway process of a single battery can be divided into three stages: the battery will generate heat during use, and after a safety hazard occurs, the heat will reach a position close to 100 degrees Celsius, that is, the thermal initiation st...

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Problems solved by technology

[0003] At present, most of the fire extinguishing agents used in battery fire extinguishing systems announced in China are dry powder, aerosol, water-based, foam, heptafluoropropane, etc. Dry powder fire extinguishing agents are not suitable for people's places, and it is difficult to transport them remotely. The diffusion of fire extinguishing agents is affected by obstacles and cannot be timely Extinguish the deep battery fire and it is not easy to clean up after extinguishing the fire; aerosol fire extinguishing agent is not suitable for people's places, cannot be transported remotely, self-heating when starting up, exceeding the safe temperature of the battery; water-based and foam fire extinguishing agents cannot extinguish electrical fires, most of which are reflected in The surface fire extinguishing function cannot take into account the fire in the whole space and the deep part. The amount of agent used is large and it is not suitable to use in winter. After the fire is extinguished, the fire extinguishing medium will cause secondary damage to personnel, vehicles and vehicle facilities and property. The cleaning work; heptafluoropropane fire extinguishing agent is toxic and not suitable for human places, and according to the "Kigali Amendment" of the "Montreal Protocol on Substances that Deplete the Ozone Layer" in October 2016, it has been included in the restricted control list, which will be released in 2024 year end of sale

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