Multi-level passive-active thermal control for battery thermal runaway prevention and suppression in electric vehicles

IF 17 1区工程技术 Q1 ENERGY & FUELS

Etransportation Pub Date : 2025-09-04 DOI:10.1016/j.etran.2025.100467

Jiekai Xie , Junlin Li , Canbing Li , Xinyan Huang , Guoqing Zhang , Xiaoqing Yang

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引用次数: 0

Abstract

Resolving the contradiction between heat-dissipation during normal operation and thermal-insulation after thermal runaway (TR) is highly desirable for battery thermal safety system but remains challenges. Herein, a multi-leveled thermal control strategy, i.e., passive cooling - active cooling - passive suppression - active suppression, has been proposed for TR prevention-suppression of the battery packs. The system is primarily designed by modular composite phase change material (CPCM), liquid cooling (LC) plates and aerogel plates (APs). Firstly, the passive cooling CPCM coordinated with active LC enables a suitable working temperature, low temperature gradient and low energy consumption of the battery pack under variable environments. Secondly, the modular design of the battery pack couples with the passive thermal-insulation effect of APs, successfully preventing TR from propagating to other modules. Thirdly, APs work synergistically with dynamic LC, greatly enhancing the directional heat-dissipation, and consequently, the TR propagation can be suppressed to the lowest level. By the flexible dynamic flow rate adjustment, the TR of large-scaled battery packs with different configurations of 4S12P, 6S8P, 8S6P and 12S4P can be successfully suppressed in the initially-triggered cell.

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电动汽车电池热失控预防与抑制多级被动-主动热控制

解决电池正常工作时的散热与热失控后的隔热之间的矛盾是电池热安全系统迫切需要解决的问题，但仍是一个挑战。本文提出了一种多层热控制策略，即被动冷却-主动冷却-被动抑制-主动抑制，以防止电池组的TR抑制。该系统主要由模块化复合相变材料（CPCM）、液体冷却（LC）板和气凝胶板（APs）设计而成。首先，被动冷却CPCM与主动LC相协调，使电池组在可变环境下具有合适的工作温度、低温度梯度和低能耗。其次，电池组的模块化设计与ap的被动隔热效应耦合，成功地阻止了TR传播到其他模块。第三，ap与动态LC协同工作，大大增强了定向散热，从而将TR传播抑制到最低水平。通过灵活的动态流量调节，4S12P、6S8P、8S6P和12S4P不同配置的大型电池组的TR可以在初始触发电池中成功抑制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Etransportation Engineering-Automotive Engineering

CiteScore

19.80

自引率

12.60%

发文量

审稿时长

39 days

期刊介绍： eTransportation is a scholarly journal that aims to advance knowledge in the field of electric transportation. It focuses on all modes of transportation that utilize electricity as their primary source of energy, including electric vehicles, trains, ships, and aircraft. The journal covers all stages of research, development, and testing of new technologies, systems, and devices related to electrical transportation. The journal welcomes the use of simulation and analysis tools at the system, transport, or device level. Its primary emphasis is on the study of the electrical and electronic aspects of transportation systems. However, it also considers research on mechanical parts or subsystems of vehicles if there is a clear interaction with electrical or electronic equipment. Please note that this journal excludes other aspects such as sociological, political, regulatory, or environmental factors from its scope.