Working principle and key technology analysis of 6LR61 battery management system BMS

　　Analysis of the working principle and key technologies of the 6LR61 battery management system BMS. The 6LR61 battery management system BMS generally has a number of conventional protection functions such as high and low voltage, high and low temperature, and overcurrent and short circuit, as well as the measurement function of reserve power. Thanks to the rapid development of new energy vehicles, it is an important component of the power battery system. BMS, the market size is expanding rapidly.

　　Working principle of 6LR61 battery management system BMS

　　From the working principle, the battery management system BMS controls the on and off of the power supply circuit by collecting and calculating parameters such as current, voltage, temperature, SOC, etc., and reports the collected key data to the vehicle controller, and receives the controller It coordinates its instructions with other systems on the vehicle. Therefore, it is known as the "brain", "housekeeper" and "nanny" of the power battery system.

　　The 6LR61 battery management system BMS is a system that specifically manages the status of each single battery in the battery pack. Through this system, the status of the entire battery pack can be determined and corresponding control adjustments and strategy implementation can be made based on the status. Generally speaking, the 6LR61 battery management system is mainly divided into two major modules: master control and slave control. It is composed of central processing unit, data acquisition module, data monitoring module, display unit module and control components. Generally, data information communication between modules is achieved by using internal CAN bus technology.

　　The central main control module is mainly responsible for the management and control of the entire system, just like a person's brain controls thoughts and then communicates each thought to the limbs to control limb activities. The terminal module part of the lithium battery is responsible for data collection, mainly collecting voltage, current, temperature, signals, etc. Finally, there is the display module to present data to achieve human-computer interaction.

　　Based on the functions of each module, BMS can detect the voltage, current, temperature and other parameters of the 6LR61 battery in real time, implement thermal management, balance management, high voltage and insulation detection of the power battery, and can calculate the remaining capacity and charge and discharge power of the power battery. and SOC&SOH status.

　　Based on the cooperation of these modules, various tasks such as battery parameter detection, battery status estimation, online fault diagnosis, battery safety control and alarm, charging control, battery balancing, thermal management, network communication, information storage, electromagnetic compatibility, etc. can be completed. There are various batteries on the market, such as nickel metal hydride batteries, lithium iron phosphate batteries, polymer batteries, etc., which can be combined into lithium battery packs through various series and parallel connections and then unified managed through the battery management system.

　　The lithium battery management system BMS can quickly and reliably monitor the state of charge (SoC), state of health (SoH) and state of function (SoF) based on starting capability to provide necessary information. Therefore, BMS can minimize the number of car failures caused by unexpected battery failure, thereby maximizing the service life and battery efficiency of lithium batteries, and achieving CO2 emission reduction functions.

　　Analysis of key technologies of 6LR61 battery management system BMS

　　1. New chip technology

　　2. High-precision voltage/current detection technology

　　3. Core algorithms and big data

　　4. Functional safety development technology

　　5. Hardware reliability technology

　　6.BMS wireless communication technology

　　7.BMS simulation and modeling technology

　　8. Test verification technology

　　9. BMS industrial application technology: energy storage

　　10. BMS industrial application technology: echelon utilization/after-sales maintenance

　　11.BMS/motor control/vehicle controller all-in-one integrated technology

　　The main task of the lithium battery management system is to ensure the design performance of the battery system, which can be broken down into the following three aspects:

　　1) Safety, protect battery cells or battery packs from damage and prevent safety accidents;

　　2) Durability enables lithium batteries to work in a reliable and safe area and extends the service life of the battery;

　　3) Dynamic performance, maintaining the battery working in a state that meets the vehicle requirements.

　　Summary: The above is the working principle and key technology analysis of the 6LR61 battery management system BMS. Therefore, lithium batteries require BMS to strictly control the charge and discharge process to avoid overcharge, overdischarge, and overheating. Extend the life of your battery pack and maximize its performance.

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