Explosion-proof valve and explosion-proof valve isolation net aperture design method and system

A technology of isolation nets and explosion-proof valves, which is applied in computing, image data processing, instruments, etc., can solve problems such as open flames outside the box, hidden safety hazards, etc., and achieve the effect of improving safety

Pending Publication Date: 2020-08-28
YANTAI INNOVATIVE NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing explosion-proof valves or waterproof and breathable valves can only block larger solid particles when thermal runaway occurs, while small and medium solid particles produced by thermal runaway of batteries, especially burning solid particles (such as sparks, etc.) can run away with heat The generated gas is blown out, which is very easy to ignite the combustible gas, resulting in an open flame outside the box, which brings great safety hazards

Method used

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  • Explosion-proof valve and explosion-proof valve isolation net aperture design method and system
  • Explosion-proof valve and explosion-proof valve isolation net aperture design method and system
  • Explosion-proof valve and explosion-proof valve isolation net aperture design method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0040] see figure 1 and figure 2 , providing an explosion-proof valve for a battery box of a multi-element battery, comprising a housing 1, a sealing ring 2, a waterproof and breathable membrane 3, an isolation net 4 and an upper cover 5; the center of the housing 1 is formed with a port 6, The edge of the housing 1 is formed with an annular sealing groove, the sealing ring 2 is placed in the annular sealing groove, the waterproof and breathable membrane 3 and the isolation net 4 are both placed inside the housing 1, the The waterproof breathable membrane 3 covers the port 6, the isolation net 4 covers the waterproof breathable membrane 3, and the isolation net 4 is distributed with mesh holes determined according to the particle size of the solid particles ejected from the thermal runaway of the multi-component battery; The sealing ring 2 is covered on the periphery of the waterproof and gas-permeable membrane 3 and the isolation net 4;

[0041] Specifically, the isolation...

Embodiment 2

[0045] The present invention also provides a method for designing the aperture of the isolation net of an explosion-proof valve, see image 3 , including the following steps:

[0046] S1: Use a high-speed camera CCD to collect images of the solid particles ejected from the thermal runaway of the multi-element battery;

[0047] S2: The A / D converted particle digital image obtained by the acquisition system is read in by the two functions of imread and imshow and displayed on the screen;

[0048] S3: Preprocess the particle digital image, use the median filter function medfilt2 to perform low-pass filtering on the original image to eliminate noise interference in the image, and then use the sharpening filter function fspecial to call the sobel operator to low-pass filter the original image The particle digital image is sharpened to highlight the boundary of the particle; then the edge function is used to call the canny operator to detect the edge of the particle to obtain a com...

Embodiment 3

[0058] The present invention additionally provides an aperture design system for the isolation net of an explosion-proof valve, see Figure 4 ,include:

[0059] The image acquisition module 7 is used to acquire images of the solid particles ejected from the thermal runaway of the multi-element battery by using a high-speed camera CCD;

[0060] The image display module 8 is used for reading in by the two functions of imread and imshow and displaying the A / D converted particle digital image obtained by the acquisition system on the screen;

[0061] The image preprocessing module 9 is used for preprocessing the digital image of the particles, using the median filter function medfilt2 to perform low-pass filtering on the original image, eliminating noise interference in the image, and then using the sharpening filter function fspecial to call the sobel operator Sharpen the particle digital image after low-pass filtering to highlight the boundary of the particle; then use the edge...

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Abstract

The invention discloses an explosion-proof valve and an explosion-proof valve isolation net aperture design method and system, a sealing ring, a waterproof breathable film and an isolation net are allarranged in a shell, the waterproof breathable film covers a through hole, the isolation net covers the waterproof breathable film, and net holes determined according to the particle size of solid particles sprayed by a multi-element battery in a thermal runaway manner are distributed in the isolation net; the sealing ring covers the edges of the waterproof breathable film and the isolation net;the upper cover covers the edge of the waterproof breathable film. According to the invention, the air permeability and the solid particle diameter are analyzed and calculated; the explosion-proof valve with the isolation net is designed according to the optimal aperture mesh number; a large amount of gas generated when the battery in the box is thermally out of control is smoothly blasted and exhausted; meanwhile, most of solid particles, which comprises burning solid particles such as sparks, are blocked and isolated in the battery box, so that the situation that in the prior art, sparks aresprayed out along with combustible gas, the discharged combustible gas is ignited outside the box, and secondary fire and explosion are caused is avoided, and the safety of the new energy automobilebattery is improved.

Description

technical field [0001] The invention relates to the technical field of battery box fire suppression, in particular to an explosion-proof valve, an explosion-proof valve isolation net aperture design method and system. Background technique [0002] In recent years, with the country's strong support for new energy vehicles, lithium batteries have been used more and more, and the safety issues of lithium batteries have become more and more prominent. Battery boxes are generally equipped with explosion-proof valves or waterproof and breathable valves. When the battery heat is out of control, especially multi-element batteries composed of nickel-cobalt-manganese-aluminum and other elements, such as nickel-manganese binary batteries, nickel-cobalt-manganese ternary batteries, nickel-cobalt Manganese-aluminum quaternary batteries, etc., will produce a large amount of gas, including combustible gas H 2 , CO, etc., and the combustion-supporting gas O 2 Wait. The solid particles pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40G06T7/11G06T7/13G06T7/136H01M2/12H01M50/30H01M50/383
CPCG06T5/002G06T5/003G06T7/13G06T7/136G06T5/40G06T7/11G06T2207/20032G06T2207/30204H01M50/383H01M50/394Y02E60/10
Inventor 张立磊常洪波谭业超李明明刘云奇
Owner YANTAI INNOVATIVE NEW ENERGY TECH CO LTD
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