Safe lithium ion battery

Abstract

The invention discloses a safety type lithium ion battery, and belongs to the technical field of lithium ion batteries. According to the safety type lithium ion battery, when the lithium ion battery has abnormal high temperature, a copper block can be far away from a first conductive block by utilizing weakening of magnetic force between a ferrite magnet and a magnetic net, so a function of automatically disconnecting the battery from a circuit is realized, and the indicating ball is arranged on the lithium ion battery to avoid continuous heating of the battery and ensure the safety of the battery; meanwhile, the frequency of abnormal high temperature of the lithium ion battery can be displayed according to the number of the color balls in the transparent tube in the indicating ball, the working state of the battery can be visually known when a maintainer overhauls the battery, the maintainer is helped to rapidly troubleshoot the abnormal battery, and the use safety of the lithium ion battery is improved; when the temperature of the lithium ion battery is abnormal, the attachment net can be shortened, so the thermal grease in the storage ring automatically flows out, and the lithium ion battery is helped to be rapidly cooled.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, and more specifically, relates to a safe lithium ion battery. Background technique [0002] Notebooks play an important role in daily office work. The internal batteries of existing notebooks are lithium-ion batteries. The working principle of notebook computers is generally that two lithium-ion batteries are connected in parallel, and then three sets of lithium-ion batteries in parallel are connected in series. [0003] For the lithium-ion power battery modules connected in parallel, when one or several batteries are internally short-circuited, other batteries in the battery module will discharge them, and the energy of the battery pack will cause the temperature of the internally short-circuited batteries to rise rapidly, which is extremely It is easy to induce thermal runaway, which will eventually cause the battery to catch fire and explode. Although conventional temperature det...

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Problems solved by technology

[0003] For the lithium-ion power battery modules connected in parallel, when one or several batteries are internally short-circuited, other batteries in the battery module will discharge them, and the energy of the battery pack will cause the temperature of the internally short-circuited batteries to rise rapidly, which is extremely It is easy to induce thermal runaway, which eventually leads to battery fire and explosion. Although conventional temperature detection can tell the IC to cut off the main circuit when the battery heats up, it cannot prevent the continuous discharge inside the parallel battery module. Therefore, a safe lithium-ion battery solution is proposed. above question

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