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Abstract
Aiming at the online monitoring of real-time operating of lithium-ion energy storage batteries for distributed power station, this paper studies the online monitoring system of lithium-ion energy storage batteries based on B/S network structure. The system consists of a battery status information collection unit, a centralized control unit, and a remote monitoring center. The battery status information collection unit detects the current, voltage, temperature and other parameters of the lithium ion energy storage battery in real time, transmits the data to the centralized control unit for data processing and real-time estimation of the SOC of the battery, and then the centralized control unit transmits the measurement parameters through the Internet network. The remote monitoring center monitors and analyzes the battery real-time status data, accurately calculates the battery SOC, realizes the online real-time monitoring of the lithium ion battery, prevents the lithium ion battery from overcharging, over-discharging, overheating, and promotes the safe and stable operation of the lithium-ion energy storage battery.
Highlights
As a green energy, distributed power generation technology has attracted more and more attention[1,2,3]
Lithium-ion battery is mainly composed of two electrodes, electrolytes and porous partitions[1,4,5,6]
In order to verify the measurement accuracy of the online monitoring system under normal working temperature, a set of lithium manganate batteries and high-precision adjustable analog batteries are used as test objects, and the actual voltage of the battery is measured by a high precision multimeter, and the online monitoring is performed
Summary
As a green energy, distributed power generation technology has attracted more and more attention[1,2,3]. The volatility and dispersion characteristics of distributed generation require energy storage batteries to stabilize fluctuations, match supply and demand, and improve power supply quality[2,3]. Distributed battery energy storage system can weaken or even eliminate the fluctuation of new energy power generation and enhance the stability of new energy power generation. The performance and state of energy storage batteries have a decisive influence on the stable, safe, reliable, long-life, and low-cost operation of distributed generation. The efficiency, operation and maintenance cost, safety and reliability of a large number of energy storage battery cells are currently recognized as technical problems in the world. Online monitoring on the state of energy storage batteries is very important. With the long-term use of the online monitoring system, the regular maintenance of the battery can be gradually converted into active maintenance with reducing maintenance risks and maintenance costs
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