| 施志成,周勇,程旭东.锂离子电池电解液火灾的烟雾探测方法研究[J].火灾科学,2021,30(2):107-112. |
| 锂离子电池电解液火灾的烟雾探测方法研究 |
| Smoke scattering characteristics of electrolyte fire of lithium-ion battery |
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| DOI：10.3969/j.issn.1004-5309.2021.02.05 |
| 基金项目: |
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| 中文关键词: 散射不对称比 电解液火灾 干扰气溶胶 探测器 |
| 英文关键词:Scattering asymmetry ratio Electrolyte fire Nuisance aerosol Detector |
| 摘要点击次数: 147 |
| 全文下载次数: 1998 |
| 中文摘要: |
| 基于散射不对称比的气溶胶识别方法,采用单个入射波长和两个散射角的方式测定了电解液火灾、正庚烷火棉绳阴燃三种火灾烟雾和D90粉尘的前后向散射不对称比。结果表明,在红外LED光源作用下,前向散射角为45和后向散射角为135°时,不同类型气溶胶的散射不对称比的均值和变化率存在差异,这可以用于区分火灾烟雾和干扰气溶胶。此外,在进行锂离子电池火灾烟雾探测器的光源选择时发现,在电解液火灾初期,短波长作用下的烟雾不对称比变化率更大,由此提出了采用405 nm~525 nm单波长光源和双散射角的电解液火灾烟雾探测方法。 |
| 英文摘要: |
| Based on the aerosol identification method, a single incident wavelength and two scattering angles were used to determine the forward and backward scattering asymmetry ratio of electrolyte fire, n-heptane fire, cotton rope smoldering, and D90 dust. The results show that under the action of the infrared LED light source, when the forward-scattering angle is 45° and the back-scattering angle is 135°, the mean value and change rate of the scattering asymmetric ratio of different types of aerosols are different, which can be used to distinguish fire smoke and interference aerosols. In addition, when selecting the light source of the lithium-ion battery fire smoke detector, it was found that the asymmetric ratio change rate of the smoke under the action of the short wavelength was greater. Therefore, 405 nm~525 nm single-wavelength light source and double scattering angle are more conducive to electrolyte fire and smoke detection. |
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