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Home / Energy Storage / Lithium battery system FJ768-280E-A1
Lithium battery system FJ768-280E-A1

Lithium battery system FJ768-280E-A1

Lithium battery system manufacturer since 2003

High-performance Energy Storage System

 

Category: Energy Storage Tag: Lithium battery storage system
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Description

Lithium battery system FJ768-280E-A1

The lithium battery system is mainly composed of a battery, an energy storage inverter(PCS), an energy management system (EMS), a battery management system (BMS), and other electrical equipment: secondary BMS design, multiple monitoring of system status, hierarchical linkage. Relays, fuses, circuit breakers, and BMS constitute a comprehensive protection system integrating electrical safety and functional safety.

System Composition

Lithium Battery Module

The system is mainly composed of safe, efficient, and long-life lithium iron phosphate cells in series and parallel to form battery modules, and multiple modules in series to form battery clusters.

Battery Management System

The core component of the system effectively protects the battery from overcharge, over-discharge, and overcurrent and manages the battery cell in a balanced way to ensure the safe, reliable, and efficient operation of the whole system.

Monitoring System
System operation data monitoring, operation policy management, historical data recording, system status recording, etc.

System Topology

Lithium battery system 1

Dimensions Of The System

Lithium battery system 2

System Features

︱Safe and Reliable︱

ØFirst-line manufacturers of lithium iron phosphate cells.

ØIntelligent air cooling design, long system life, smooth operation.

ØModule and battery cluster two-stage BMS design, multiple state monitoring, and hierarchical linkage fully ensure the safety of the battery system.

ØRelay, fuse, circuit breaker, three electrical protection systems.

︱Efficient and Convenient︱

ØThe standard system has stable and reliable performance and long service life.

ØModular design facilitates maintenance, management, and expansion.

︱Active Equalization︱

Ø2A BMS actively equalizes current to overcome the influence of single-cell capacity on system capacity;

ØThe balancing accuracy is less than 2%, and the balancing capacity reaches 10% of the rated output;

︱Cost Optimization︱

ØSmall size, lightweight, save space and installation cost;

ØLong cycle life, low failure rate, reduce operation and maintenance investment

System Application  

Industrial and commercial demand management, peak cutting, and valley filling

User-side backup power supply

Wind and photovoltaic energy storage adjust peak and frequency

Microgrid system

System Specification

 

Nominal Capacity 120AH
Nominal Voltage 768V
Nominal Battery Energy 92.16kWh
Operating Voltage Range 672V~876V Single-cell core 2.8 ~ 3.65
Max Continuous Charge Current 60A (0.5C)
Max Continuous Discharge Current 120A (1C)
Operating Temperature Range Charge:0℃~45℃

Discharge:-20℃~60℃

Optimum Working Temperature 15℃~35℃
Storage Temperature -40℃~60℃ System SOC: 20%~40% condition
Work Environment Altitude:<2500m

Relative humidity: <95% (no condensation)

Heat Management Intelligent air cooling
Insulation Resistance >500MΩ@1500VDC
Isolation Withstand Pressure 2500VDC/1min
Internal Power Supply Mode 24VDC Built-in DC/DC
Quiescent Dissipation 35W Typical value, the module fan is not started
Data Display 7″ TN true color LCD screen Scale:5:3, resolution:800×480
Level of Protection IP21
Dimension(W*D*H) ≤1100mm*700mm*2000mm
Weigh ≤1100kg
Cycle Life 4000 0.5C@25℃ charge-discharge@80%DOD,EOL80%
Battery Management Section (BMS)
Voltage Acquisition Range 1-5V
Single Cell Voltage Acquisition Accuracy ≤10mV
Total Voltage Acquisition Accuracy ±1V or ±1%
Current Acquisition Range 0~±500ADC Rated ±400ADC
Current Acquisition Accuracy ≤1%
Temperature Acquisition Range -20~125℃
Temperature Acquisition Accuracy ≤±1℃
Accuracy of SOC Estimation ≤8% Typical values, with self-calibration
Accuracy of SOH Estimation ≤8%
Charge Overcurrent Protection >1C,10S;
Discharge Overcurrent Protection >1C,10S;
Over-temperature Protection Discharge>60℃(20S)

Charge>45℃(20S)

The default value of the return difference is 15℃, which can be set
Low-temperature Protection Discharge<-20℃ (1S)

Charge<0℃ (1S)

The default value of the return difference is 15℃, which can be set

 

Cell

The lithium battery system adopts a 3.2V 120Ah standard lithium iron phosphate cell with square aluminum shell design, which reduces the possibility of internal damage caused by mechanical damage to the surface of the cell and improves the safety performance of the product. The battery is equipped with a thin-film explosion-proof valve to ensure that in any extreme circumstances (such as an internal short circuit, battery overcharge, and over-discharge, etc.), a large amount of gas rapidly gathered in the battery can be discharged through the anti-riot valve to improve safety.

Parameter List
Battery Type LiFePO4
Nominal Battery Energy☆ 120.0Ah 0.5C @ 25℃
Nominal Voltage☆ 3.20V
Operating Voltage Range 2.5~3.65V
Ac Internal Resistance☆ ≤1.0mΩ
Net Weight ≤2860g
Max Charge Current 0.5C continuous
2C 50%SOC, 30s
Max Discharge Current 1C continuous
2C 50%SOC, 30s
Max Operating Temperature Range -20℃/ + 60℃
Charge 0℃~45℃
Discharge -20℃~60℃
Optimum Operating Temperature Range 15℃~35℃
Storage Temperature -40℃/ + 60℃ Within 1 month:-40℃~45℃

Within 6 month:-20℃~35℃

lithium battery storage system 1

Module

The battery module consists of 32 3.2V 100Ah monomer lithium iron phosphate cells, 2  parallel connections, and 16 strings (16S2P) to form the 51.2V 200Ah battery module. The built-in BMU system collects the voltage and temperature of individual cells and manages cell balance, ensuring the normal operation of the entire module in a safe and efficient manner.

Parameter List
Nominal Capacity 120Ah
Configuration 1P16S
Nominal Voltage 51.2V
Nominal Battery Energy 6.144kWh
Max Continuous Charge Current 60A (0.5C)
Max Continuous Discharge Current 120A (1C)
Operating Voltage Range  44.8~58.4V
Operating Ambient Temperature  -20℃~55℃
Weight  ≤65kg
Dimension (W*D*H)  ≤400mm*600mm*200mm
Communication  CAN
Type of Cooling  Intelligent Air Cooling

20230628153042 removebg preview 1

lithium battery storage system 2

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