BMS is a key component of electric vehicles, what does it mean?

　　The battery management system (BMS) of electric vehicles is an important link between the power battery and the electric vehicle. It integrates the monitoring and management of the battery or battery pack to ensure the safety and reliability of the battery or battery pack and output in the best state power.

　　BMS can realize important functions such as real-time monitoring of the battery, automatic equalization, and intelligent charging and discharging. While effectively ensuring the safety of the battery, it can also realize the monitoring of the remaining battery power. BMS can improve the cruising range of electric vehicles through effective battery management. It is an indispensable part of the power battery pack and is of great significance to the normal operation of electric vehicles. Especially this year, because of the cost advantage, lithium iron phosphate batteries have shown a trend to surpass the traditional nickel-based lithium batteries, but the charge and discharge characteristics of lithium iron phosphate batteries are more special and require the help of BMS.

　　Effective control and management of complex and diverse battery packs can break through the bottleneck of the popularization of electric vehicles. Tesla's battery management system can be said to be the most mature system today. Thanks to the full application of deep learning and artificial intelligence, Tesla's BMS can continuously obtain big data about actual driving, and then self-enhance the algorithm, thereby the battery life of the Tesla battery pack is relatively longer. Cruising range is currently the main problem facing the increase in the penetration rate of electric vehicles, and Tesla has shown its differentiated competitive advantage by relying on leading design concepts.

　　BMS, like the battery, is an auto part needed by the car factory, and the car factory is the top of the manufacturing. From the beginning of the function definition of BMS, the automobile factory takes the lead, then finds a third-party design company for product design, and finally finds a manufacturer for production, and the three parties jointly determine the BMS matching plan for the battery pack.

　　The main participants in the BMS market are auto companies, auto parts companies, and battery companies: automakers rely on their deep understanding of vehicle control and parameter matching, and rely on their strong financial strength and technology accumulation to develop research and development that match their product needs. The BMS used by Tesla, Toyota Pruis, Nissan Leaf, General Volt, etc. are all developed by automakers; large auto parts companies such as Bosch, Delphi, Denso, Preh, Calsonic Kansei, etc. use their own the R&D advantages in related products and the long-term and good cooperative relationship with automakers also occupy an important position in the BMS market; in addition, another important type of participant in the BMS market is battery manufacturers, such as LG, Samsung SDI, A123, etc. Their BMS is mainly matched with their own battery products. That is to say, BMS is extremely important for vehicle manufacturers, battery pack manufacturers, or third-party BMS manufacturers. Technically speaking, as a vehicle manufacturer and battery manufacturer, it is necessary to understand BMS technology, otherwise it will not be able to better match the performance of the vehicle and battery system.

　　The importance of the battery management system (BMS) is self-evident.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries, and are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.