Why electric vehicle batteries need BMS 18650 3500mah battery intelligent management system

　　Why do electric vehicle batteries need BMS 18650 3500mah battery intelligent management system? The BMS 18650 3500mah battery management system should be able to control the charge and discharge of electric vehicle batteries, battery temperature, and the balance between single cells. In pure electric vehicles, the power 18650 3500mah battery pack is one of the core components and accounts for a very high proportion of the vehicle manufacturing cost. As the monitoring and management center of the pure electric vehicle power battery pack, the battery management system must monitor the temperature and temperature of the battery pack. Voltage, charge and discharge current and other related parameters are monitored dynamically in real time.

　　Why do electric vehicle batteries need BMS 18650 3500mah battery intelligent management system?

　　1. Safety. Lithium batteries have defects such as poor safety and occasional explosions. In particular, lithium batteries with lithium cobalt oxide as the cathode material cannot be discharged at high currents and have poor safety.

　　2. Maintainability. The capacity attenuation of lithium batteries at low temperatures and the inability to accurately predict the power level make the maintainability of the equipment poor. Instruments that are online for a long time require regular battery replacement, and the working sites of remote monitoring equipment are scattered and the distances between sites are long, so battery replacement is a huge workload and costly.

　　In order to reduce the maintenance workload and maintenance costs, the 18650 3500mah battery BMS management system needs to have an accurate charge state estimation function to accurately grasp the battery's charge state and perform battery replacement more purposefully; at the same time, the battery management system also needs to have a relatively high charge state estimation function. Low self-power consumption to reduce maintenance frequency and extend battery life.

　　BMS 18650 3500mah battery management system is mainly used in the communication field and mining industry. Specific products include backup lithium iron battery system for communication, electric vehicle battery management system, lithium iron phosphate explosion-proof battery management system for mining, etc.

　　The thermal runaway temperature of lithium iron phosphate battery (LFP) is higher than 250°C, which makes it a very safe battery and has a very long life. However, its low specific energy (less than half that of NCA) makes its application in small mopeds less common.

　　Lithium nickel cobalt aluminate (NCA) has the highest specific energy with its specific energy of 250-290Wh/kg, but its cost is high and its safety is low. Their service life also varies, with the general number of recharges ranging from 500 to 1,000 times, which is only about half that of lithium iron batteries. Tesla uses thousands of 18650 nickel-cobalt lithium batteries and performs more stringent testing to increase their lifespan to avoid full discharge and full recharge.

　　A good BMS battery management system has a temperature sensor that can monitor the voltage of an individual battery pack and detect low-performance cells before the 18650 3500mah battery pack is packaged. This 100% testing ensures higher yields, higher battery capacity and reduced warranty commitments. A good battery management system also records mechanical impacts, deep discharge dates and information, so false warranty claims can be avoided. An excellent BMS can also detect the humidity of 18650 3500mah battery packs to avoid accidents.

　　The BMS 18650 3500mah battery intelligent management system should have the function of displaying the battery state of charge (SOC) and monitoring the battery's energy flow (charging and discharging processes). As a power battery for ship propulsion, the SOC should send out visual and audible alarm signals when it reaches the minimum power required for normal operation of the ship. The alarm device for this alarm signal should be independent of other alarm devices.

　　With the widespread application of electric vehicles, battery capacity, safety, health and endurance have increasingly become the focus of attention. 18650 3500mah battery management system (BMS) is an important link between vehicle batteries and electric vehicles. Its main functions include: real-time monitoring of battery physical parameters; battery status estimation; online diagnosis and early warning; charge, discharge and precharge control; balance management and thermal management. Management etc.

　　In short: BMS 18650 3500mah battery management system is the core component of electric vehicles and hybrid electric vehicles, and also the heart of power. The importance of battery management system BMS is self-evident.

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