What is BMS


BMS, the English full name is Battery Management System, refers to the battery management system.  BMS can be said to be the "battery steward" of new energy vehicles. It can monitor the battery status in real time, manage the on-board power battery, enhance the battery efficiency, prevent the battery from overcharging and overdischarging and improve the service life of the battery. 
BMS is a very large collection of software and hardware, including sensors, central processing unit, actuators and so on.  The BMS obtains the state information of the battery cell through the sensors distributed throughout the battery pack, and transmits the state information to the central processor for processing by the processor, and processes and executes the feedback information through the actuator, so as to adjust the state of the battery to be in a suitable working environment and a safe environment, and meet the power demand of the vehicle. 

The core function of BMS is to collect the voltage, temperature, current, resistance and other data of the power battery system, then analyze the data status and battery use environment, and monitor and control the charging and discharging process of the battery system.  According to the function, we can divide the main functions of BMS into battery status analysis, battery safety protection, battery energy management, communication and fault diagnosis. 

BMS system is a battery management system, which is the link between the battery and the user. 

1, BMS is the battery management system, the link between the battery and the user.  The main object of bms is secondary battery, the purpose is to improve the utilization rate of battery, prevent the phenomenon of overcharge and overdischarge of battery, achieve the purpose of prolonging the service life of battery and monitoring the state of battery. 

2. The battery management system is closely integrated with the power battery of the electric vehicle. The voltage, current and temperature of the battery are detected in real time through sensors. At the same time, leakage detection, thermal management, battery balance management, alarm reminder and calculation of remaining capacity are also carried out.(SOC), discharge power, report battery deterioration degree (SOH) and remaining capacity (SOC) state, also control the maximum output power according to the voltage, current and temperature of the battery with algorithm to obtain the maximum mileage, and control the charger with algorithm to charge the best current, and communicate with the vehicle master controller, motor controller, energy control system, vehicle display system and the like in real time through the CAN bus interface. 

3. Centralized BMS has the advantages of low cost, compact structure and high reliability. It is generally common in scenarios with low capacity, low total pressure and small battery system volume, such as power tools, robots (handling robots, power robots), IOT smart homes (sweeping robots, electric vacuum cleaners), electric forklifts, electric low-speed vehicles (electric bicycles, electric motorcycles, electric sightseeing cars, electric patrol cars, electric golf carts, etc.), light hybrid vehicles. 

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