Working principle of lithium-ion battery protection IC | Working principle of lithium-ion battery protection IC || || In recent years, PDA, DSC, Cellular Phone, Camcorder, Portable ||Audio, Advanced Game, Assist Bicycle, Electric Scooter, Bluetooth||Device …More and more products are rapidly using lithium batteries as their main power source, for the following reasons:||small size, high energy density, no memory effect, high cycle life, high voltage battery, self-discharge rate|| Low... and other advantages, and because it is different from nickel-cadmium and nickel-metal hydride batteries, safety during charging and discharging must be considered to ensure the prevention of characteristic deterioration. However, because of this, overcharging and over-discharging of lithium batteries The protection of overcurrent and short-circuit current is even more important, so protection circuits are usually designed in the battery pack to protect lithium batteries. This shows the importance of lithium battery protection ICs. || || Due to the high energy density of lithium-ion batteries, it is difficult to ensure battery safety. Specifically ||, in an overcharged state, the energy of the battery will be excessive after the temperature rises, so the electrolyte decomposes and produces || gas, which may cause the risk of ignition or rupture due to the increase in internal pressure. On the contrary, in the over-discharge state||, the electrolyte decomposes, causing battery characteristics and durability to deteriorate (ie, the number of charges is reduced). || || The protection circuit of lithium-ion battery is to ensure that...
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