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Author ：Iflowpower – Portable Power Station Supplier
With the rapid development of society, our energy storage battery management system is also developing rapidly. So you understand the detailed information of the storage battery management system? Next, let Xiaobian lead everyone to learn more about knowledge. Large battery arrays can be used as a spare and continuous power storage system.
This kind of usage is getting more and more concerned. Currently, the most common energy storage battery should be a lithium iron ion battery. About energy storage battery packs or battery packs, a fully equipped BMS management system is very important, this is a good solution to the energy storage battery pack.
Get full. So what is the requirements for the battery BMS management system? Using the battery as a spare power is not a new thing. There are many types of battery spare power systems, such as basic 120 / 240VAC and desktop PCs, ships, hybrid vehicles or full-power models with hundreds of watt power supply.
Thousands of thousands of watts used in the automotive and ship spare power system, telecommunications system and data center used in the telecommunications system and data centers for alternate power systems, etc. Although the chemical nature of the battery and the advancement of battery technology have attracted a lot of attention, feasible batteries-based alternate systems (battery management system (BMS)) also have equally important components. Analog measurement function: Measure the voltage and temperature of the single battery in real time, and measure the voltage and current of the battery pack.
Make sure the battery is safe, reliable, stably, ensures battery life, and meets the optimization control requirements of single battery and battery pack operation. The spare power supply supplied according to the battery is very suitable for power from a few kilowatts to several hundred kW, and can supply reliable and effective power for a variety of uses. Online SOC diagnosis: Based on real-time data collection, an expert mathematical analysis and diagnostic model is established to measure the remaining power of the battery in line.
SOC. At the same time, it is based on the battery's discharge current and ambient temperature intelligently corrects SOC prediction, and supplies more consistent battery remaining capacity and reliable use time when the load changes. Perfecting the battery management system for energy storage has many challenges.
Solution is not simply "expand" from a small and low-capacity battery pack management system. Conversely, to be new, more complex strategies and key support components. Battery system running alarm function: When the battery system overvoltage, undervoltage, overcurrent, high temperature, low temperature, communication abnormality, BMS exception, etc.
, can be displayed and reported to the alarm information. The starting point of the challenge is to have high accuracy and credibility in the measured values of many key battery parameters. In addition, the plan of the subsystem must be modular so that the configuration can be customized according to the specific requirements used, and it must also consider possible extended requirements, overall management issues and necessary maintenance.
Battery System Protection: About the abnormal battery failure of severe battery overvoltage, undervoltage, and overcurrent (short circuit) during operation, high voltage control unit can quickly cut off battery circuit, isolate the fault point and output sound and issue an alarm information in time To ensure that the system is safe and reliable. The working environment of large storage arrays has also brought other important challenges. When the inverter voltage is high / current, the BMS must also supply accurate and universal data in a noisy electrical environment (usually a high temperature environment).
In addition, BMS must also supply a wide "fine" data for internal modules and system temperature measurements, rather than limited quantity of coarse data, because these data is critical to charging, monitoring and discharging. In time, reliably, the energy storage system retains two hard nodes. When BMS detects that the battery system reaches the protection limit, BMS sends the protection limit value to the PCS through the dry node, prohibits charging and discharging.
Due to important purposes of these power systems, their work reliability is essentially important. In order to make this easy goal be a reality, BMS must ensure the accuracy and integrity of the data and sustained health assessment so that BMS can continue to take the required action. Completing reliable planning and reliable security is a multi-level process.
BMS must perform self-test and supply fault detection for all expected issues of the subsystem, then select the appropriate operation in standby mode and mode of operation. The last request is that due to high voltage, high current and high power, BMS must meet many strict regulatory standards. The above is the detailed analysis of the knowledge of the energy storage battery management system, you must continue to accumulate related experience in practice, so that you can design better products and better develop for our society.
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