0.5MW/1.075mwh LFP Energy Storage System Project Proposal

• Nominal Voltage: 2.4V ~ 1000V
• Warranty: 2 Years+
• Nominal Capacity: 1kwh~1mwh
• Model NO.: 0.5MW/1.075MWh
• Cycle Life: 3000~20000
• Chemistry: LFP Lto
• Operational Temp: -40ºC-70ºC
• Change/Discharge Rate: 0.5c~20c
• Transport Package: on Pallets
• Specification: kWh
• Trademark: TNE/OEM
• Origin: China

Product Description

 

Detailed Photos

 

 

 

         This project is to connect the energy storage system to the AC voltage (400V) bus. The main role of an energy storage system is to accumulate energy, and the stored energy will be used for the system's own consumption or sold to the power system at a peak price. 

2.2.System configuration

        The key equipment of the energy storage system is composed of battery system-energy storage converter-isolation transformer, and the 0.5MW/1.075MWh energy storage system is composed of 5 battery clusters, which are connected to a 500kW PCS after being combined through a DC combiner cabinet, and the AC400V output of the PCS is connected to the AC400V AC bus of the mains through an isolation transformer. 
 

project	Rated voltage	capacity	energy	Group approach
Battery cell	3.2V	280Ah	0.896kWh	/
Battery box	51.2V	280Ah	14.336kWh	1P16S
Battery clusters	768V	280Ah	215.04kWh	1P240S
Battery energy storage systems	768V	5*280Ah	1075.2kWh	5*1P240S

Table 2-1 Parameters of energy storage battery system units

2.3.System access topology

The energy storage system consists of a battery system, a battery management system (BMS), an energy storage inverter (PCS), an energy management system (EMS), and a step-up transformer. 
The schematic diagram of the energy storage system access is as follows:

 

2.4.Battery system

The energy storage battery equipment adopts a modular design, including battery cells-battery modules-battery clusters-battery systems, with clear hierarchies, clear structures and perfect functions, including perfect battery cluster frames, battery management systems (BMS), temperature control systems, lighting systems, fire detection and automatic fire extinguishing systems, security systems, emergency systems, etc. 
The technical parameters of the 20-foot 1075.2kWh battery container are shown in the following table:
 

No.	project		parameter	remark
1	Nominal voltage		768V
2	Nominal charge		1075.2kWh
3	Voltage range		600V~876V	Cell  2.5~3.65V
4	The SOC window is recommended		10%~90%
5	Maximum charging power		~500kW
6	Maximum discharge power		~500kW
7	Operating temperature	0~50ºC	0~50ºC
8		-20~50ºC	-20~50ºC
9	Ambient temperature is recommended		20~30ºC
10	Thermal management		Air-cooled	The cooling power is 30kW
11	Methods of Communication		CAN/RS485
12	System IP rating		IP54	container
13	weight		≤25t
14	System size		W6096×D2438×H2896mm	20' high cube container
15	Storage temperature		0~35ºC	Not more than 6 months
16	Store humidity		<70%RH

Table 2-2 Technical parameters of 1075.2kWh battery system container

The rendering of the battery system container is shown in the following figure:

 

Figure 2-2a Rendering of the battery system container 

 

Figure 2-2b Schematic diagram of the container size of the energy storage system 

The battery system is equipped with a complete battery management system, and adopts a three-level management structure, including module level, cluster level and system level, to achieve comprehensive control, management and protection of the battery system and ensure the safe and stable operation of the battery system.

 

Figure 2-3 Energy storage grouping process

2.4.1.Cell technology

The battery cell adopts a mature energy 280Ah lithium iron phosphate (LFP) prismatic aluminum shell battery cell produced by a fully automatic production line. This cell has high energy density, long cycle life and high safety.

Table 2-3 Cell parameters

No.	parameter	Specifications	remark
1	Battery cathode material	Lithium iron phosphate
2	Cell capacity	280Ah
3	Rated voltage	3.2V
4	Operating voltage range	2.5~3.65V
5	Number of cycles	≥ 7000 times	0.5C,80%EOL@25ºC
6	Operating Temperature (Charging)	0~55ºC
7	Operating Temperature (Discharge)	-30~55ºC

2.4.2.Battery box technology

The battery module is in the form of a subrack, with a specification of 51.2V280Ah, which is composed of a 1P16S module, a collection wiring harness, a BMU module, a power terminal and other related electrical and structural parts.

 

 

Figure 2-5 Schematic diagram of the battery subrack

Battery box parameters

No.	project		parameter	remark
1	Nominal capacity		280Ah
2	Nominal voltage		51.2V
3	Nominal charge		14.336kWh
4	Serial-parallel mode		1P16S
5	Charging (constant power)	Maximum continuous charging power	0.5P
6		Charge cut-off voltage	40V
7	discharge	Maximum continuous discharge power	0.5P
8		Discharge cut-off voltage	58.4V
9	Charging time	Standard charging	2h
10	Insulation resistance		More than 50MΩ	DC2500V
11	Operating temperature under charging conditions		0~50ºC
12	Operating temperature under discharge conditions		-20~50ºC
13	Storage temperature		0~35ºC
14	Store humidity		<70%RH
15	Ingress protection		IP20
16	Battery box size		D770*W445*H238mm	Tolerance ± 3mm
17	Battery box weight		110kg	Subject to actual conditions

2.4.3.Battery cluster technology

 

Appearance of a battery cluster

Table 2-5 Parameters of battery clusters

No.	project		parameter	remark
1	Nominal capacity		280Ah	/
2	Nominal voltage		768V	/
3	Nominal charge		215.04kWh
4	Serial-parallel mode		1P240S	Consists of 15 battery modules connected in series
5	Charging (constant power)	Maximum continuous charging power	0.5P
6		Charge cut-off voltage	600V	/
7		Maximum continuous discharge power	0.5P	/
8	discharge	Discharge cut-off voltage	876V
9	Charging time	Standard charging	2.0h
10	Insulation resistance		>1000Ω/V	DC2500V
11	The SOC window is recommended		SOC:10%~90%	/
12	Operating temperature under charging conditions		0~50ºC	/
13	Operating temperature under discharge conditions		-20~50ºC	/
14	Storage temperature		0~35ºC	Within 6 months
15	Store humidity		<70%RH	/

Table 2-6 Technical parameters of high-pressure box

No.	name	Technical parameters
1	Current rating	200A
2	Operating voltage	1000V
3	SOC accuracy	6%
4	weight	<30kg

2.5.PCS system

The energy storage system adopts a 500kW bidirectional converter (with isolation transformer + STS quick transfer switch), which has the basic characteristics of bidirectional inversion, and has a series of special properties and functions, which can realize the charging and discharging functions of the battery system in different applications. The energy storage PCS can be operated automatically, with a high degree of visualization of the operating status, with a display screen as a man-machine interface, and the real-time operation data, real-time fault data, historical fault data, etc. can be clearly displayed through the touch screen or button operation.

 

 

Figure 2-7 Energy storage bidirectional converter

2.5.1.Circuit diagram

 

Figure 2-9 PCS topology

2.5.2.Technical parameters

Table 2-8 500kW PCS parameter table

No.	project	Technical parameters	remark
1	AC access mode	Three-phase three-wire
2	Rated power	500kW
3	Overload capacity	110%: Long-term operation 120%: not less than 1min
4	Rated voltage	400Vac	320WAC~460Wac
5	Current rating	772A
6	Rated grid frequency	50Hz	Consistent with grid frequency.
7	Total current waveform distortion (THD).	<3% (rated power).	Rated power
8	Factor	Not less than 0.99 (lead or lag)	Within the capacity allows
9	DC voltage range	500 - 850V
10	Maximum DC current	1128A
11	Low voltage ride-through	Yes	Provide third-party test reports for verification
12	High voltage ride-through	Yes	Provide third-party test reports for verification
13	Anti-islanding protection	Yes
14	Other protection features	Yes
15	Maximum efficiency	≥97.5%	Provide third-party test reports for verification
16	Isolation method	Built-in transformer + STS fast transfer switch
17	Output voltage accuracy	1%
18	Output voltage total harmonics	<3% (linear load).
19	With unbalanced load capacity	100%
20	Overload capacity	110%: Long-term operation 120%: not less than 1min
21	Dimensions (W×H×D)	1600mm×1050mm×2050mm
22	weight	2665kg
23	Enclosure rating	IP21
24	Cooling method	Air-cooled
25	Communication interface	CAN, RS485, Ethernet port, expandable
26	Operating ambient temperature	-30 ºC~+55ºC
27	Store at ambient temperature	-40 ºC~+70 ºC
28	Relative humidity is allowed	0~95%, no condensation
29	altitude	5000m(>3000m)

2.6.Battery Management System (BMS).

2.6.1.Topology diagram

 

Figure 2-10 Topology of the BMS system

Table 2-10 BMS parameters
 

No.	project	specification
1	System power	DC24V
2	Single-cell voltage detection range (V)	0V~5V
3	Single-cell voltage detection accuracy (mV)	±5mV
4	Temperature Detection Range (°C)	-40°C~85°C
5	Temperature Detection Accuracy (°C)	±1°C
6	Total Voltage Detection Range (V)	0V~1500V
7	Total Voltage Detection Accuracy (%)	1%FSR
8	Insulation testing	Support the maximum voltage of 1800V, and the detection error is less than 10%
9	Current Sensing Range (A)	-500A-500A
10	Current Sensing Accuracy (%)	1.0%FSR
11	SOC Accuracy (%)	5%
12	Equalizing current (A)	100mA
14	Methods of Communication	CAN or 485
15	display	Industrial displays
16	Indicator, buzzer alarm	It has a red and green indicator and a buzzer alarm
17	protection	Including: overcharge, overdischarge, overtemperature, short circuit and other protections, and the protection value can be set

List of main equipment

No.	name	specification	unit	quantity
	Box-type energy storage system		cover
1	0.5MW box-type energy storage battery system	1.0752MWh energy storage system	cover	1
1.1	Battery clusters	215.04kWh,280Ah	cluster	5
1.2	BMS system	BMU,BCMU,BMS	cover	1
1.3	DC combiner cabinet	5 to 1	cover	1
1.4	Thermal management system	Air-cooled	cover	1
1.5	Fire protection system	Perfluorohexanone fire extinguisher	cover	1
1.6	Battery compartment containers	20ft container, including box and accessories	cover	1
1.7	Cables & Accessories	Cable glands included	cover	1
1.8	PCS	500kW	platform	1
2	EMS		cover	1
2.1	Hardware devices	Servers, switches, etc	cover	1
2.2	Software Services	Operating systems, databases, etc	cover	1

Company Profile

Tedian Energy - Your Trusted Partner in Quality Assurance and Transparency

TNE is a provider of intelligent power industry solutions that enable utility companies, energy companies, and industrial operators to optimize the efficiency, stability, and sustainability of power systems through innovative technology and expertise.

Core products

Advanced energy storage:
Supercapacitors: High power density, fast charging/discharging, ideal for grid frequency regulation and transient voltage support.
High power, long lifespan, low temperature resistance, and ultra safe battery: designed specifically for -40 ° C environments, capable of providing over 20000 cycles, with extremely high fire resistance and reliability under harsh conditions.
Third party quality assurance: Conduct independent inspections of power systems/components to ensure global standard compliance and supply chain reliability.

Main advantages
Extremely cold performance, non combustible safety design, and sustainable, recyclable components.
Customized solutions for microgrids, industrial voltage stability, and remote energy storage.

Support and Services
Comprehensive after-sales support includes technical maintenance, rapid troubleshooting (90% of critical issues resolved within 4 hours), and training to improve operational efficiency.