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Battery pack flue gas flow channel system and battery pack

A battery pack and flue gas flow technology, applied in the field of battery packs

Pending Publication Date: 2019-11-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a battery pack smoke flow channel system and a battery pack for how to better control the occurrence of thermal runaway and improve the safety of the battery pack.

Method used

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  • Battery pack flue gas flow channel system and battery pack
  • Battery pack flue gas flow channel system and battery pack

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Embodiment Construction

[0043] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0044] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" ment...

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Abstract

The invention relates to a battery pack flue gas flow channel system and a battery pack. The battery pack flue gas flow channel system comprises a plurality of branch pipelines, a main pipeline and acooling device, wherein the plurality of branch pipelines are respectively communicated with the main pipeline to form a combustible mixed gas dredging channel. The combustible mixed gas dredging channel dredges a combustible mixed gas generated by the single batteries during thermal runaway to the outside of the battery pack, so that the accumulation of the combustible mixed gas in the battery pack is reduced, and thus the explosion and combustion probability of the battery pack is reduced. Furthermore, the cooling device is arranged at an exhaust port of the main pipeline, thereby reducing the temperature of the combustible mixed gas at the exhaust port of the main pipeline, and effectively avoiding the gas explosion at the exhaust port of the main pipeline. Therefore, the battery pack flue gas flow channel system reduces the explosion and combustion probability of the battery pack and improves the safety of the battery pack.

Description

technical field [0001] The present application relates to the technical field of battery packs, in particular to a battery pack smoke flow channel system and a battery pack. Background technique [0002] During the thermal runaway process of the battery pack, a large amount of flammable gaseous mixtures are generated, such as flammable electrolyte vapor, hydrogen, carbon monoxide, methane, ethylene and other gaseous substances. These combustible mixtures gradually accumulate inside the battery pack during the thermal runaway process, and cause the internal pressure of the battery pack to gradually increase until a preset pressure threshold is reached, the safety valve of the battery pack is opened, and the combustible mixture is discharged to the external environment. [0003] During the eruption of the battery pack, the temperature of the battery pack can reach a maximum of about 1000°C, and the eruption is often accompanied by sparks. Due to the high temperature of the b...

Claims

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Application Information

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IPC IPC(8): H01M2/12H01M6/50H01M10/42H01M10/613H01M10/6556H01M10/6562H01M10/6568
CPCH01M6/5011H01M6/5038H01M10/4207H01M10/613H01M10/6556H01M10/6568H01M10/6562H01M2200/20H01M50/394H01M50/383Y02E60/10
Inventor 李成王贺武李伟峰张亚军欧阳明高李建秋卢兰光杜玖玉韩雪冰冯旭宁
Owner TSINGHUA UNIV
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