PRS-7550 Battery management system
PRS-7550 Battery management system
Product Description
The battery management system (BMS) is the most important control link in the energy storage system. On the one hand, the BMS system protects, monitors, measures, and maintains the battery cells; on the other hand, the BMS system performs data transmission, command reception, log storage, and power interactive control. These functions are the bridge and interface of interaction between micro-grid, monitoring & PCS and the battery. Therefore, the BMS system is the most critical link between the entire energy storage control system and the battery.
The PRS-7550 battery management system of CYG SUNRI is mainly used in large-scale energy storage containers and indoor energy storage projects, and it generally forms a complete energy storage system with PCS and EMS. Due to its various functions such as protection, measurement, monitoring, and communication, it is the most important cornerstone in the energy storage control system and bears important responsibilities such as battery maintenance and safe use.
Scope Of Application
Technical Features/Advantages
It can manage multiple battery clusters, and the clustering scheme is flexible, which can adapt to various application scenarios.
It can realize grid-connection control of single battery cluster, which is convenient for maintenance and repair.
With real-time insulation monitoring function, it can provide guarantee for system insulation safety.
It can provide real-time display of battery state, system charging and discharging information, alarm records, SOC and other information and operating state.
The BMS touch screen requires a security password for operation, and non-professionals cannot operate the system via touch screen.
It has a complete electrical safety detection and protection scheme; it can provide various functions, such as over-current protection, over-voltage protection, under-voltage protection, single battery protection, and SOC over-discharge protection.
Equipped with a large-size touch LCD screen, it has a good human-computer interaction interface, and there is screen prompt of operation and function during the whole process.
The BMS system adopts a three-level structure, and the hierarchical functions are clear and easy to maintain.
The BMS system has multiple communication interfaces, including RS485, CAN, Ethernet and RS232, and the communication method is convenient and flexible.
It has the function of information recording, and the information will not be lost when power is off.
Specifications/Submodels
able 1 BMS electrical parameters |
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Item | Parameter | Note | |||
Active equalization | 1-5A | ||||
Equalization efficiency | No less than 90% | Equalization efficiency | |||
Passive equalization | Maximal 150mA | ||||
Power consumption | BMU static power consumption | <1.2W | 12 strings single battery collection | ||
BCMU power consumption | <5W | ||||
BSMU power consumption | <30W |
Table 2 Technical parameters of BMS collection and measurement | ||||||
Item | Parameter | |||||
Voltage acquisition | Total voltage detection range | <1000V | ||||
Total voltage detection precision | ±0.2% | |||||
Total voltage acquisition cycle | 1ms | |||||
Total voltage upload mode | Change of state (COS) upload + cycle upload | |||||
Total voltage upload cycle | 500ms | |||||
Single battery voltage detection range | 0-5V | |||||
Single battery voltage detection precision | ±5mV | |||||
Single battery voltage acquisition cycle | Adjusted according to project, no shorter than 1ms | |||||
Single battery upload mode | Cycle upload | |||||
Single battery upload cycle | Adjusted according to project, a standard cycle is 100ms | |||||
Current acquisition | Current detection range | ±1000A | ||||
Current detection precision | ≤±0.2% | |||||
Current acquisition cycle | 1ms | |||||
Current upload mode | Change of state (COS) upload + cycle upload | |||||
Current upload cycle | 500ms | |||||
Temperature acquisition | Temperature detection range | -20~85℃ | ||||
Temperature measurement precision | ±1℃ | |||||
Temperature resolution ratio | ≤1℃ | |||||
Temperature acquisition cycle | Adjusted according to project, no shorter than 1ms | |||||
Temperature upload mode | Cycle upload | |||||
Temperature upload cycle | Cycle upload | |||||
Insulation resistance detection | Detection precision | <5% |
Table 3 Technical parameters of BMS calculation and storage | ||||
Item | Parameter | |||
SOC calculation precision | ≤8% | |||
SOC calculation upload cycle | ≤500ms | |||
Event record | ≥10000 | |||
Information storage duration | Online storage for 45 days |
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