This paper can provide guidance for the design of insulation between lithium battery modules in distributed energy storage systems. The experimental results showed that: The thermal runaway spreading time of the batteries was effectively prolonged, when a nanofiber thermal insulation layer was used.
Higher density packs mean more energy storage capacity, which would make battery storage an increasingly more viable option for on and off-grid storage, as well as improving the performance and range of electric vehicles.
The thermal spreading interval between the thermal runaway battery and the neighboring batteries in the module is increased to an infinite length, and only the thermal runaway battery shows the phenomenon of spraying valve such as fire and smoke. It is expected to have a guidance for the design of thermal insulation in lithium-ion battery modules.
The thermal spread suppression experiment was carried out by using the control variable method, and the influence of different material insulation layers on the thermal spread inhibition performance of lithium-ion battery module was studied.
Among them, lithium-ion batteries are one of the most widely used electrochemical energy storage technologies due to their high energy density, high efficiency conversion, long life and cycle stability. In addition, lithium-ion batteries have become the mainstream choice for power batteries in new energy vehicles.
The safety accidents of lithium-ion battery system characterized by thermal runaway restrict the popularity of distributed energy storage lithium battery pack. An efficient and safe thermal insulation structure design is critical in battery thermal management systems to prevent thermal runaway propagation.