1.4MWh Smart on grid ESS

This Micro-Grid ESS(Energy Storage System) contains 1.4MWh LiFePO4 battery system, 500kW PCS, 1set HVAC(Heating, Ventilation and Air Conditioning), 1set Fire Fighting, lighting system, thunder-proof, AC& DC distributor, optional parts, and a SCADA(Supervisory Control And Data Acquisition) system to manager them. All of the above are designed in a 40ft standard container.

Application field

Main parameters


1.1 Battery system specification

Item

Spec

System topology

System= 8Clusters =6*19Modules

Cell Type

LiFePO4

Nominal Voltage

730V

Nominal Capacity

Cluster:240Ah, System:1920Ah

Nominal Energy

Cluster:0.175MWh, , System:1.4MWh

Working voltage range

638~832V

Standard Charge Voltage

729±8V

Floating charge voltage

786±8V

Max charge current

700A

Max charge power

Subsystem:500KW

Max discharge current

700A

Max discharge power

Subsystem:500KW

Dimension(mm)

Module:430W*650D*200H, Rack: (Customized)

Gross weight(Approx.)

Module:80kg, Rack(include modules): 1000kg

Operating Temperature

Charging:0~50℃, Discharging:-20~60℃

Cycle life

≥4000cycles @80%DOD @0.25C




Battery Manage System performance

Performance

Index value

Operating voltage

18 ~ 32V

SOC estimation accuracy

≤8%

single voltage sampling accuracy

±5mV

Total voltage sampling accuracy

±5V

Current sampling accuracy

≤1% F.S

Temperature sampling accuracy

±2℃

Standard Charge Voltage

840±8V

Floating charge voltage

814±8V

system power consumption

≤150W/ per Subsystem

Temperature Channels/per BMU

3

Communication support

RS485,  CAN, Enternet





Features

1.Features

◆ Using long lifetime (≥4000cycles),high efficient ( reach 98%) 、 High safety LFP cells;

◆ Actively balance management, improve battery efficiency, maintain battery consistency, and increase the cycle life.

◆ Complete fault and operation log recording function, system.

◆ Info storage time last one month ;

◆ Support RS485、Ethernet communication;

◆ Battery design according to UL1973 standard

 

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