Automatic lithium battery fire extinguishing system

Abstract

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.

Description

technical field

[0001] The invention relates to the technical field of lithium battery fire extinguishing, and relates to an automatic lithium battery fire extinguishing system. Background technique

[0002] In recent years, as lithium batteries have many advantages such as high energy density, high output power, and long charge and discharge life, they have been widely used in the fields of transportation power, electric energy storage, and mobile communications, and have developed into my country's energy strategic. part of the emerging industry. However, with the in-depth application of lithium batteries in engineering, the problem of fire safety has become increasingly prominent. Since lithium batteries are energetic substances, especially when they are overheated, short-circuited, squeezed, etc., they will generate a lot of heat, causing fire hazards. The chain reaction of internal electrode materials and electrolytes leads to thermal runaway and develops into large-sca...

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