Lithium battery fireproof heat insulation structure and early warning system

Abstract

The lithium battery fireproof heat insulation structure comprises a protection device, the protection device comprises a U-shaped protection outer frame, side protection buffer mechanisms, a top protection buffer mechanism and a linkage buffer mechanism, the side protection buffer mechanisms are installed on the inner circumferential side face of the U-shaped protection outer frame in a sliding mode, and the top protection buffer mechanism is installed on the inner top of the U-shaped protection outer frame; the linkage buffer mechanisms are in sliding fit with the side protection buffer mechanisms and the top protection buffer mechanisms on the adjacent surfaces respectively, so that the lithium battery can achieve fireproof and heat insulation effects, impact force generated when the lithium battery explodes in a fire can be relieved, the range of the explosion influence area of the lithium battery is reduced, and the safety of the lithium battery is improved. And through the early warning system of the lithium battery fireproof heat insulation structure, the duration of the lithium battery spreading from the current stability maintaining state to the thermal runaway state is estimated, the reliability prediction of the duration of the thermal runaway of the lithium battery is realized, the actual duration of the lithium battery from the stability maintaining state to the thermal runaway state is furthest approached, and the reliability of the lithium battery is improved. And reliable early warning prompt before the lithium battery is out of control is achieved.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, and relates to a fireproof and heat insulation structure and an early warning system of a lithium battery. Background technique [0002] With the development of power batteries, lithium batteries have the advantages of no pollution and long life. Therefore, pure electric vehicles have become the mainstream of the development of new energy vehicles. However, in recent years, fires caused by electric vehicles have caused huge loss of life and property. , the safety of electric vehicles has been questioned, and people's concerns about the safety hazards of electric vehicles have ended. Among the frequency of electric vehicle fires, thermal runaway of power lithium battery system is the primary cause of electric vehicle fires. After the thermal runaway of lithium batteries It has the characteristics of fast burning speed, producing a large amount of toxic gas, and lithium batteries are pron...

AI Technical Summary

Problems solved by technology

[0002] With the development of power batteries, lithium batteries have the advantages of no pollution and long life. Therefore, pure electric vehicles have become the mainstream of new energy vehicle development. However, in recent years, fires caused by electric vehicles have caused huge losses of life and property. , so that the safety of electric vehicles has been questioned, ending people's concerns about the safety hazards of electric vehicles. Among the frequency of electric vehicle fires, the thermal runaway of the power lithium battery system is the primary cause of electric vehicle fires. After the thermal runaway of lithium batteries It has the characteristics of fast burning speed and large amount of toxic gas, and the lithium battery is prone to explosion

[0003] In the prior art, it is impossible to effectively design a lithium battery structure with fire prevention and heat insulation, especially for the lithium battery, which cannot be detonated and mitigated, resulting in the problem that the impact force of the lithium battery after the explosion is too large and the scope of influence is large; At the same time, the existing lithium battery cannot judge whether to cool down according to the temperature in the lithium battery during use, so that once the temperature in the lithium battery is too high, the time for the lithium battery to reach thermal runaway is accelerated, and the time for the lithium battery to reach thermal runaway cannot be effectively alleviated. And it is impossible to realize a reliable early warning prompt before the lithium battery is out of control, resulting in the inability to evacuate in time, resulting in heavy loss of personnel and property

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