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Intelligent fire alarm and fire extinguishing system for electric vehicle charging and discharging facilities and operation method

A technology of fire extinguishing system and electric vehicle, applied in fire alarms with electric action, fire alarms with radiation action, fire alarms with smoke/gas action, etc., can solve the problem of uncontrollable fire and related electrical components Failure, melting and other problems, to achieve early warning and fire detection timely, reasonable design effect

Pending Publication Date: 2022-04-08
CHINA RAILWAY CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium batteries will slowly release hydrogen and oxygen during normal charging. If hydrogen accumulates in a closed indoor space (such as an underground garage), it is very likely to catch fire when it encounters an external fire source or a charging spark: In addition, electric vehicles When charging with high current, the relevant electrical components and wires will continue to heat up. If the product does not meet the relevant technical standards or the heat dissipation is not handled properly, it will accelerate the aging or even melting of the insulation layer of the wires, causing the relevant electrical components to fail and short circuit, thus causing a fire. Install fire monitoring system in underground garage
[0003] There are some problems in the use of the existing intelligent fire alarm and fire extinguishing system for electric vehicle charging and discharging facilities: first, the fire extinguishing method is single, and the fire extinguishing efficiency is poor; second, the conventional fire alarm system is generally arranged on the top of the building. In the first few seconds or tens of seconds when the battery at the bottom of the electric vehicle heats up and generates smoke or flames, there is little smoke at the top of the room, and the temperature at the top does not increase significantly (the smoke produced by some batteries at the beginning of the fire is heavier than air). Conventional fire alarm systems cannot detect electric vehicle fires, and electric vehicle fires often deflagrate or explode tens of seconds to a few minutes after abnormal heating or smoke, resulting in uncontrollable fires

Method used

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  • Intelligent fire alarm and fire extinguishing system for electric vehicle charging and discharging facilities and operation method

Examples

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Effect test

Embodiment 1

[0026]see figure 1 , an intelligent fire alarm and fire extinguishing system for electric vehicle charging and discharging facilities, including a fire alarm mechanism, a fire extinguishing mechanism, a camera mechanism, a sensing mechanism and a ventilation mechanism, the fire alarm mechanism includes a fire evacuation broadcast 17, and the fire evacuation broadcast 17 Fixedly installed on the upper side of the underground garage 1, the fire extinguishing mechanism includes an electric sprinkler, a fire extinguishing ball releaser 13 and a mobile fire extinguishing agent fireproof unit wall 29, and the fire extinguishing ball releaser 13 is fixedly installed on the underground garage 1 side, the mobile fire extinguishing agent fireproof unit wall 29 is fixedly arranged on one side of the electric vehicle 21, and the side wall of the underground garage 1 is fixedly connected with a charging and receiving pile 2, and the charging and receiving One side of the power receiving pi...

Embodiment 2

[0033] see figure 1 An intelligent fire alarm and fire extinguishing system for electric vehicle charging and discharging facilities, including a fire alarm mechanism, a fire extinguishing mechanism, a camera mechanism, a sensing mechanism and a ventilation mechanism, the fire alarm mechanism includes a fire evacuation broadcast 17, and the fire evacuation broadcast 17 is fixedly installed On the upper side of the underground garage 1, the inside of the underground garage 1 is provided with a sensing mechanism, and the position of the underground garage 1 on the upper side of the electric vehicle 21 is also fixedly installed with a ventilation mechanism, and the inside of the front of the electric vehicle 21 is provided with an electric Vehicle battery 28.

[0034] In the embodiment of the present invention, the sensing mechanism is composed of a wireless transmission temperature sensor 9, a wireless transmission smoke sensor 11, a vehicle bottom wireless transmission temperat...

Embodiment 3

[0038] The operation method of the intelligent fire alarm and fire extinguishing system of the electric vehicle charging and discharging facility, the operation method of the system is as follows:

[0039] a. In daily use, monitor the normal charging and discharging of electric vehicles through various monitoring equipment such as visible light and infrared vision (infrared temperature measurement camera), air quality, smoke, temperature, and electric parameters, and The parameters are transmitted to the distributed electric vehicle fire risk intelligent assessment and automatic fire protection server 6 for storage, processing and analysis, and the potential safety hazards of the electric vehicle battery 28 are discovered in advance;

[0040] b. When abnormal charging and discharging of the battery 28 of the electric vehicle is detected, the power supply emergency cut-off device 7 forcibly cuts off the power supply and stops charging;

[0041] c. When a fire breaks out, use th...

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Abstract

The invention discloses an intelligent fire alarm and fire extinguishing system for electric vehicle charging and discharging facilities and an operation method. The intelligent fire alarm and fire extinguishing system comprises a fire alarm mechanism, a fire extinguishing mechanism, a camera mechanism, a sensing mechanism and a ventilation mechanism. The system has the beneficial effects that the system is provided with the electric power parameter monitoring module, charging abnormity can be found in real time, then fire hazard alarm is carried out, and wireless transmission infrared temperature measurement cameras, smoke sensors, temperature sensors and other sensors are arranged on the vehicle bottom and the vehicle side face of the storage battery part close to the fire hazard; a fire can be found in time, an alarm signal can be sent out, relevant alarm and fire extinguishing facilities are linked, all electric valves, electric control fire extinguishing agent pipelines, electric spray heads and the like are opened in a linked mode to spray a fire extinguishing agent, and the fire is extinguished within several seconds to dozens of seconds at the beginning of the fire by utilizing a precious time window of several seconds at the beginning of the fire. Moreover, according to the fire hazard characteristic of the electric vehicle, three-dimensional all-dimensional fire extinguishing is carried out on the exterior, the top, the bottom and the interior of the electric vehicle, and water and various fire extinguishing agents are adopted for comprehensive fire extinguishing.

Description

technical field [0001] The invention relates to a fire alarm and fire extinguishing system, in particular to an intelligent fire alarm and fire extinguishing system and an operating method for electric vehicle charging and discharging facilities, and belongs to the technical field of electric vehicle charging and discharging facilities. Background technique [0002] The common power battery for electric vehicles is lithium battery. Lithium batteries will slowly release hydrogen and oxygen during normal charging. If hydrogen accumulates in a closed indoor space (such as an underground garage), it is very likely to catch fire when it encounters an external fire source or a charging spark: In addition, electric vehicles When charging with high current, the relevant electrical components and wires will continue to heat up. If the product does not meet the relevant technical standards or the heat dissipation is not handled properly, it will accelerate the aging or even melting of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C3/07A62C3/16A62C19/00A62C31/00A62C31/28A62C37/00A62C37/40G08B17/06G08B17/10G08B17/12
Inventor 王宽郑筱彦林巨鹏周大兴陈静李晓阁张亚齐温恺殷炳帅
Owner CHINA RAILWAY CONSTR GROUP