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Product Description
Outline of the programme:
This phase is equipped with a capacity of 10MW/5MWh energy storage system, including lithium titanate battery system, bidirectional converter (PCS), battery management system (BMS), energy management system (EMS), AC and DC distribution control system, environmental monitoring system and fire protection system. The energy storage system has core technical support in terms of safety, integration, and information intelligence.
The key equipment of the energy storage system is composed of battery system-energy storage converter-step-up transformer, the 20MW/10MWh energy storage system is composed of 8 sets of 1.25MW/0.645MWh energy storage units, and the 0.645MWh lithium titanate battery system has a total of 3 battery clusters, each of which is connected to a 1250kW PCS after being combined through a DC combiner cabinet.
There are a total of 2 containers on the AC side, each container integrates 4 PCSs of 1250kW, which is boosted to 10kV by a 5000kVA transformer. On the DC side, there are a total of 40 sets of 40-foot lithium titanate containers, each container integrates two sets of 0.645MWh lithium titanate battery systems, two sets of combiner cabinets, two sets of 15kW air cooling systems, two sets of liquid cooling units, and one set of fire protection systems.
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System Solution
This solution uses 2.4V/40Ah lithium titanate battery with a single power of 96Wh. It has the characteristics of safety and reliability, high system efficiency and long cycle life. Each standard subrack is 4P16S and consists of 64 2.4V/40Ah cells, with a subception specification of 38.4V/160Ah and a power of 6.144kWh. Each battery cluster consists of 35 subracks connected in series and 1 high-voltage box, with a battery cluster specification of 1334V/160Ah and a single cluster power of 215.04kWh.
| Project |
Rated Voltage |
Capacity |
Energy |
Group Approach |
| Battery cell | 2.4V | 40Ah | 96Wh | / |
| Battery box | 38.4V | 160Ah | 6.144kWh | 4P16S |
| Battery clusters | 1334V | 160Ah | 215.04kWh | 4P560S |
| Single 0.645MWh battery system unit | 1334 V | 3*160Ah | 645.12kWh | 3*4P560S |
System access topology:
The energy storage system consists of a lithium titanate battery system, a battery management system (BMS), an energy storage inverter (PCS), an energy management system (EMS) and a step-up transformer.
DC system battery cabinet with IP54 degree of protection. The pre-assembled integrated transportation design is convenient for transportation and on-site hoisting, simplifying the amount of on-site installation and wiring. The AC system adopts an outdoor integrated model with IP55 protection level.
Each 0.645MWh battery system corresponds to one 1250kW bidirectional converter. The energy storage PCS can be operated automatically, with a high degree of visualization of the operating status. Real-time operation data, real-time fault data, historical fault data, etc. can be clearly displayed through the touch screen or button operation.
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Management Systems (BMS & EMS)
BMS: The battery management system consists of a battery module management unit (BMU), a battery cluster management unit (BCMU), and a current and temperature detection unit. It handles high-precision detection, fault alarm, battery protection, and SOC calibration.
EMS: The energy management system implements full digital control. It monitors the status of PCS, BMS, environment, and load, providing data collection, centralized monitoring, and intelligent operation and maintenance for safe and efficient operation.
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Frequently Asked Questions
Q1: What type of battery technology is used in this BESS?
A1: This system utilizes 2.4V/40Ah Lithium Titanate (LTO) batteries, known for their high safety, reliability, and long cycle life.
Q2: What is the protection rating for the DC and AC systems?
A2: The DC system battery cabinets are rated IP54, while the AC system integrated models feature an IP55 protection level.
Q3: How is the system transported and installed?
A3: The system uses a pre-assembled integrated transportation design in 20ft or 40ft containers, which simplifies on-site hoisting, installation, and wiring.
Q4: Can the system operate in extreme temperatures?
A4: Yes, the system is designed to operate in ambient temperatures ranging from -30ºC to 60ºC.
Q5: What are the functions of the Energy Management System (EMS)?
A5: The EMS provides full digital control, including real-time monitoring of PCS and BMS, data analysis, intelligent operation, and maintenance to ensure system safety.
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