Protective shell capable of improving use safety of lithium ion battery

Abstract

The invention discloses a protective shell capable of improving the use safety of a lithium ion battery, and belongs to the technical field of lithium ion batteries. In the scheme, when a lithium ion battery body burns, after a barrier film is burnt out, a fire extinguishing ball is ejected to the lithium ion battery body and everywhere in the protective shell by the elastic film, and the fire extinguishing ball is quickly disassembled to spray out water in the fire extinguishing ball, so the lithium ion battery body is extinguished and cooled, continuous combustion is avoided, and a user has more escape time; when the lithium ion battery body explodes, the protective shell has a buffer protection effect, and when the explosion intensity is large, fragments of the lithium ion battery body impact the wrapping layer and are wrapped by the wrapping layer, and glue in the storage cavity flows onto the explosion fragments, so that the explosion fragments and the wrapping layer are adhered together, and sharp corners and high temperature of the explosion fragments can be prevented from hurting a human body; therefore, the greater injury to personnel who cannot react in time is prevented, and the safety is high.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a protective case capable of improving the safety of lithium-ion batteries. Background technique [0002] Lithium-ion battery is a kind of secondary battery (rechargeable battery), and lithium-ion battery mainly relies on lithium ions to move between positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging, Li+ is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. [0003] Lithium-ion batteries have always been the first choice for green and environmentally friendly batteries. At present, lithium batteries are widely used in many areas of life. Most of the most common electric vehicles in life u...

AI Technical Summary

Problems solved by technology

[0004] At present, in the process of using electric vehicles, the combustion and explosion of lithium-ion batteries are generally mainly caused by overcharging, over-discharging, external force impact and high temperature in electric vehicles. At present, there is no external protection for lithium-ion batteries. The corresponding protective buffer cannot deal with the battery combustion and explosion in time, which leads to the rapid combustion and explosion of lithium ions, and the users do not have corresponding response and emergency time, so that the time for people to escape from danger is very short, which has a greater impact on the safety of users. big threat

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