Multistage early-warning fire-fighting device and method for lithium ion battery cabinet

Abstract

The invention discloses a multistage early-warning fire-fighting device and method for a lithium ion battery cabinet. The device comprises a battery cabinet, a lithium battery mounted in the battery cabinet, a detection module disposed at the top of the inner side of the battery cabinet, a fire extinguishing system, a control system disposed outside the battery cabinet, and an alarm system; the fire extinguishing system comprises a spray head, a fire extinguishing agent storage tank, a control valve and a flow controller which are installed on the side wall of the battery cabinet and located around the lithium battery; the detection module is connected with the control system; the control system is connected with the alarm system; the fire extinguishing agent storage tank is sequentially connected with the control valve, the flow controller and the spray head through pipelines; and the control system is connected with the control valve. The device has the advantages that early warningand safety prevention measures at different stages are achieved, more accurate and rapid fire extinguishing treatment is achieved, the using amount of a needed fire extinguishing agent is relatively small, and unnecessary waste cannot be caused.

Description

technical field [0001] The invention relates to the technical field of fire safety, and more specifically relates to a multi-level early warning and fire protection device and method for a lithium-ion battery cabinet. Background technique [0002] Lithium-ion batteries have the characteristics of high energy density, long cycle life, small size, light weight, and environmental protection. They are widely used in 3C electronic products and electric vehicles. In recent years, with the development of the new energy industry and smart grid construction, lithium-ion batteries, as a kind of energy storage equipment, are increasingly in demand, and play an important role in peak shaving and valley filling, emergency backup, and improvement of power quality. effect. At present, lithium-ion batteries for energy storage are mainly placed in battery cabinets. However, the working environment is relatively airtight, the heat dissipation conditions are limited, and the intrinsic safety...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention lies in the fact that one of the problems existing in the multi-level early warning and fire-fighting device and method of the lithium-ion battery cabinet in the prior art is that the fire-extinguishing device is only activated when the single battery in the battery module is on fire, so as to suppress the open flame of the battery. It is difficult to achieve early warning and safety precautions at different stages; the second problem is that its three-level response is aimed at the battery module and the entire container, and cannot achieve more accurate and rapid fire extinguishing treatment according to the location of the fire source and the scope of the fire; The third problem is that the amount of fire extinguishing agent should be calculated based on the volume of the enclosed space of the battery module and the concentration of the fire extinguishing design, and the fire extinguishing is aimed at the entire container and battery module, which belongs to the full flooding fire extinguishing method, and requires a large amount of fire extinguishing agent , resulting in unnecessary waste

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