Fire alarm and protection device for passenger car lithium battery boxes and working method thereof

Abstract

The invention provides a fire alarm and protection device for passenger car lithium battery boxes. The fire alarm and protection device for the passenger car lithium battery boxes comprises a vehicle control system, a fire extinguishing device, a plurality of battery boxes, a display screen and a control panel, the fire extinguishing device and the plurality of battery boxes are arranged on a passenger car chassis, the display screen and the control panel are arranged in a cab; the fire extinguishing device and the plurality of battery boxes are connected by fire extinguishing agent conveying pipelines, each battery box is provided with a detection module, the detection module and the display screen are connected by a power supply and control system harness, and the detection module and the fire extinguishing device are connected by a fire detection harness. Compared with the related technology, the detection module for sensing fire is used in the fire alarm and protection device for the passenger car lithium battery boxes, the detection module has own sensor, arrangement of a sampling pipe network is not needed, the fire alarm and protection device can be directly placed in the battery boxes, the fire alarm and protection device integrates special gas and smoke detection together, has the advantages of simple structure, small occupied space, and convenient installation. The invention also provides a working method for the fire alarm and protection device for the passenger car lithium battery boxes.

Description

technical field [0001] The invention relates to the field of gas fire extinguishing systems, in particular to a fire alarm and protection device for a passenger car lithium battery box and a working method thereof. Background technique [0002] At present, the fire detection used in the lithium battery box of the passenger car is an aspirating type, which collects the gas released when the power battery or supercapacitor generates high temperature and the smoke generated when the fire occurs through the aspirating fire detector, so as to detect the fire inside each battery box. Is it on fire. This suction type fire detector has the following deficiencies: [0003] 1. Sampling equipment needs to be arranged, which takes up a lot of space, and the extra space of the battery box is small, so the layout and installation are inconvenient; [0004] 2. The collected air samples need to be sent to the host through the official website for analysis and identification before they ca...

AI Technical Summary

Problems solved by technology

[0003] 1. Sampling equipment needs to be arranged, which takes up a lot of space, and the extra space of the battery box is small, so the layout and installation are inconvenient;

[0004] 2. The collected air samples need to be sent to the host through the official website for analysis and identification before they can be fed back, so the feedback time of the fire situation is delayed, and the timeliness is not strong;

[0005] 3. The sampled air is easily affected by other polluting gases during the transmission process, which may cause false alarms;

[0006] 4. Due to relying on the main engine for analysis, it is difficult to arrange the main engine in each area of ​​the battery box. Often, one main engine manages multiple battery boxes, so it is impossible to specifically identify which battery box is on fire, and it is difficult to judge

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