Brief introduction of lithium battery protection principle

- Jan 17, 2018-

Lithium battery is divided into one battery and two times battery two types, currently, in some portable electronic products with low power consumption, the main use of a lithium battery is not rechargeable, but in laptops, mobile phones, PDAs, digital cameras and other large power consumption of electronic products, the use of rechargeable two times batteries, that is, lithium-ion batteries.

Because of the chemical properties of lithium-ion batteries, during normal use, the chemical positive reaction of energy and chemical energy is carried out, but under some conditions, such as overcharge, over discharge and overcurrent will cause chemical side reactions in the battery, which will seriously affect the performance and service life of the battery. and may produce a large amount of gas, so that the internal pressure of the battery rapidly increase after the explosion and lead to safety problems, so all lithium-ion batteries need a protective circuit for the battery charge, discharge status of effective monitoring, and in certain conditions of the closed charge, discharge circuit to prevent damage to the battery.