As the core energy component of electric vehicles and various portable electronic devices, lithium batteries have become the first choice for modern energy solutions due to their high energy density, lightweight characteristics and good charging performance.However, the delicate nature of lithium batteries also places higher safety and performance requirements on their use. This is why the Battery Management System (BMS) has become a key technology to ensure the safety, efficiency and life of lithium batteries.

一.The necessity of security requirements

The safety risks of lithium batteries are mainly reflected in three aspects: overcharge, over-discharge and overheating.In an overcharged state, metallic lithium may be produced inside the lithium battery, increasing the risk of thermal runaway, which may cause the battery to rupture or even explode.On the contrary, excessive discharge may cause irreversible damage to the battery's internal structure, thereby permanently reducing the battery's capacity and service life.In addition, when lithium batteries operate in high-temperature environments, their chemical reactions accelerate, further exacerbating the risk of thermal runaway.Therefore, BMS monitors the voltage, current and temperature of the battery in real time and strictly controls the charging and discharging process to effectively prevent these risks and ensure the safe use of lithium batteries.

二. Diversity of functional requirement

1. Real-time monitoring of SOC