Lithium battery thermal runaway released energy heat insulation test system and test method

Abstract

The invention discloses a lithium battery thermal runaway released energy adiabatic test system and a test method. The test system comprises a vacuum water bath cooling system, a data acquisition system and an adiabatic test system, the vacuum water bath cooling system comprises a water bath system and a first vacuum pump, and the water bath system comprises a water bath circulating pipeline and a water bath cooling pipeline. According to the test system, a lithium battery thermal runaway released energy heat insulation test platform in a vacuum heat insulation and water bath mode is adopted, test data are accurate and reliable, and battery self-reaction thermal runaway released energy can be monitored and analyzed in real time; through a data interface, data acquisition is accurate, timely and free of time delay; through a water bath system, the initial environment temperature of the thermal runaway reaction can be controlled; a specially-designed heat insulation test system is composed of a heat insulator and a heat insulation layer, and the situation that the accuracy of experimental data is affected due to external heat exchange of the battery in the thermal runaway process is prevented.

Description

technical field [0001] The invention relates to the technical field of thermal runaway of lithium batteries, in particular to an adiabatic testing system and testing method for thermal runaway release energy of lithium batteries. Background technique [0002] Lithium-ion batteries are the energy source of modern mobile devices. Although lithium-ion batteries can meet people's requirements for performance, capacity and battery life, the safety and stability of lithium-ion batteries still plague the further development of lithium-ion batteries. And in recent years, with the increase of thermal safety accidents of lithium-ion battery systems characterized by thermal runaway, the thermal safety of lithium-ion batteries has attracted more widespread attention, so the thermal safety of lithium-ion batteries is an important aspect of modern design mobile devices. The first problem to be considered and solved when using lithium-ion battery as an energy source. [0003] According to...

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Problems solved by technology

At present, effective methods and experimental platforms for thermal runaway release energy adiabatic testing of lithium batteries in vacuum insulation and water bath methods are not perfect at home and abroad, and it is impossible to test the thermal runaway and thermal disaster performance of lithium-ion batteries in a vacuum environment and variable temperature environment; It is also unable to provide research on multi-scale, multi-field coupling simulation methods for lithium-ion batteries

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