Lithium battery expansion explosion protection device based on electromagnetic induction principle

Abstract

The invention relates to the technical field of lithium batteries, and discloses a lithium battery expansion explosion protection device based on an electromagnetic induction principle, the lithium battery expansion explosion protection device comprises a frame, a body is movably mounted in the frame, fixed plates are fixedly mounted at the upper end and the lower end of the body, and ventilation devices are fixedly mounted between the fixed plates and the interior of the frame. According to the lithium battery expansion explosion protection device based on the electromagnetic induction principle, before the lithium battery body is expanded, the internal current is rapidly increased, the current in the electrode plate is increased, the magnetism of the electromagnet is increased, and the iron block is driven to approach the electromagnet, so that the number of turns of a coil on the iron block entering a magnetic field is increased, and the iron block also has magnetism; the speed of the iron block close to the electromagnet is increased, so that the protection plate rapidly bulges outwards before the lithium battery body is expanded and exploded, the effect of a protection bin is achieved, and the harm of explosion to a human body is avoided.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery expansion and explosion protection device based on the principle of electromagnetic induction. Background technique [0002] Lithium batteries include lithium metal or lithium alloy as positive and negative electrode materials, and batteries using aqueous electrolyte solutions. Lithium batteries can be roughly divided into two categories. One is lithium metal batteries, which contain metallic lithium inside. The other is a lithium-ion battery that cannot be charged, which does not contain metallic lithium inside and can be charged. [0003] The defect of the existing lithium battery is that it is easy to expand and damage, or even explode. There are many reasons for the explosion of the lithium battery, such as large internal polarization, and the reaction between the electrode piece absorbing water and the electrolyte changes, etc. There will be volu...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a lithium battery expansion and explosion protection device based on the principle of electromagnetic induction, which has the advantages of good heat dissipation effect and can protect the lithium battery, and solves the problem that the lithium battery in the existing device is easy to Explosions that cause harm to the human body

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