Battery thermal safety performance and fire extinguishing system comprehensive detection platform

Abstract

The invention provides a battery thermal safety performance and fire extinguishing system comprehensive detection platform which comprises a fire extinguishing system, a thermal safety performance evaluation system and a fire early warning system. The fire extinguishing system comprises a fire extinguishing device and a fire extinguishing effectiveness evaluation mechanism; the fire extinguishingdevice comprises various fire extinguishing mechanisms fixed in a simulated battery box in a closed state; the fire extinguishing effectiveness evaluation mechanism comprises temperature sensors fixedaround a tested battery; the temperature sensors are communicated with a user side; the fire early warning system comprises detectors fixed at different heights in the simulated battery box; a plurality of detectors are communicated with the user side by a data module; and the thermal safety performance evaluation system acquires flue gas to carry out analysis. The platform provided by the invention integrates thermal safety performance evaluation, fire extinguishing system test and the fire early warning system, and is simple in structure, easy to assemble and repair, visual in testing process and accurate in data. The simulated battery box also can provide two environment demands for opening and closing when having a high-intensity protection function.

Description

technical field [0001] The invention relates to the technical field of battery safety performance testing, in particular to a comprehensive testing platform for battery thermal safety performance and fire extinguishing systems. Background technique [0002] With the rapid development of the new energy vehicle and electric vehicle industry, the battery capacity is getting larger and larger, and there are more and more fire accidents caused by the battery. The thermal safety of the battery has received extensive attention. At the same time, how to quickly detect and extinguish Battery fires have also become an important topic in the field of fire safety. In the current research on battery fire safety, the fire safety evaluation of various batteries is not yet comprehensive. In terms of patents, related inventions or utility model patents include: Yang Kai and others invented a lithium-ion battery safety fire extinguishing system and method (application number 201810790366.1),...

AI Technical Summary

Problems solved by technology

In terms of patents, related inventions or utility model patents include: Yang Kai and others invented a lithium-ion battery safety fire extinguishing system and method (application number 201810790366.1), which can monitor battery status parameters, and when the preset trigger conditions are met, the Fire extinguishing treatment is carried out, but the fire extinguishing efficiency detection of different types of fire extinguishing systems cannot be realized; Jin Huifen et al. invented a method for predicting the thermal safety performance of lithium-ion batteries (application number 200610130589.2). Negative electrode and electrolyte samples, deduce the reaction mechanism, use the mechanism function and combine the material property parameters of the material, establish a mathematical model to describe the generation and flow of heat in the temporal part of the battery

It cannot detect the thermal radiation range of the battery under heating, the composition of the smoke generated, etc.

To sum up, in the existing technology, there is a lack of a comprehensive detection platform for battery thermal safety performance evaluation, fire extinguishing efficiency of different media and early warning of fire

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