摘要
电池热失控实验是研究锂离子电池热失控特性的重要手段,对提高新能源汽车整车安全性至关重要.基于现有锂离子电池热失控特性研究,明确了热失控实验过程中主要关注的参数和测量方法,开发了具备特性参数持续监测、产气量实时计算、热失控气体采集等功能的锂离子电池热失控实验教学平台,实现了锂离子电池热失控过程中电池表面温度、开路电压、产气压力、气体温度等核心参数的在线获取.针对不同类型电池热失控过程的产气特点,设计了兼顾瞬态及稳态的气体采集装置,提升了实验教学平台的普适性.
Abstract
Battery thermal runaway experiment is an important means to study the thermal runaway characteristics of lithium-ion batteries,and is crucial for improving the safety of new energy vehicles.Based on the existing research on the thermal runaway characteristics of lithium-ion batteries,we clarified the parameters and measurement methods that are of major concern during thermal runaway experiments,and developed a lithium-ion battery thermal runaway experimental platform with the functions of continuous monitoring of characteristic parameters,real-time calculation of gas production,and collection of thermal runaway gases,etc.,and realized the on-line acquisition of the core parameters of lithium-ion batteries such as the battery surface temperature,open-circuit voltage,gas production pressure,gas temperature,etc.,in the course of the thermal runaway process.Aiming at the gas production characteristics of different types of batteries in the thermal runaway process,a gas collection device that takes both transient and steady state into account is designed to enhance the universality of the experimental platform.
维普
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