20C2500K datasheet

 202500K-DST-01-V3

 Datasheet for 20C2500K BESS container

Disclaimer

Information in this document is for general purposes only. While we make every effort to ensure accuracy, we make no guarantees and reserves the right to change details without notice. For the latest information, please contact us or visit our website.

1. Product specifications

1.1. BESS container overview

Each BESS 20C2500K is assembled in one 20 feet container

The -20C2500K includes 4 battery packs per string with a rated output voltage of 690V, and each inverter has a rated power of 430kW.

1.2. BESS container architecture

The BESS container has a modular architecture with:

• Liquid cooled battery packs made with LFP cells and a Battery Management Unit (BMU).

• Battery strings with a String Controller (CMU).

• Separate AC/DC Inverters (PCS) for each battery string.

• Liquid temperature control system and HVAC dehumidifier.

• Fire fighting system, auxiliary power.

• BESS controller (GPC) to handle safety, automatic operation and data and control communication with external BESS and EMS SCADA

The 20C2500K system uses a customized container with a stronger load-bearing case and reinforcement steel frames in the middle while maintaining the same dimensions as a 20ft HC container. Anti-corrosion materials are used for the paint of the container shell to improve the anti-corrosion performance of the container.

The shell interlayer is installed with 50mm thermal insulation rock wool to improve the thermal insulation performance of the system.

In the battery compartment, there are battery Strings, liquid cooling unit, air conditioners for dehumidification and cable slots, etc. Lighting, thermal sensors, smoke sensors, firefighting pipe and other equipment are installed above the side aisle.

In the electrical compartment, there are PCS, GPC, Firefighting Control System, power distribution system ，air conditioner and auxiliary power supply.

The 20C2500K system uses a customized container with a stronger load-bearing case and reinforcement steel frames in the middle while maintaining the same dimensions as a 20ft HC container. Anti-corrosion materials are used for the paint of the container shell to improve the anti-corrosion performance of the container. Before delivery, the container can be painted with LOGO according to requirements from the buyer.

The shell interlayer is installed with 50mm thermal insulation rock wool to improve the thermal insulation performance of the system.

In the battery compartment, battery strings, high-voltage units and the PCS (PDU), as well as cable trays, are installed. The battery compartment is designed with single-side door access. Lighting, temperature detectors, smoke detectors, firefighting piping, and other equipment are installed above the side aisle.

In the electrical compartment, there are GPC, liquid chiller unit, air conditioner, firefighting control system, power distribution system.

1.3. System Architecture

1.4. System Main Technical Specifications

AC side

DC side

BBSS General

1.5. BESS Container Key features

• 314 Ah LFP cells from one of the world’s largest suppliers of LFP cells for ESS. Rated for 8,000 full cycles at 70% of initial capacity at 0.5P 25°C.

• AC/DC all-in-one integrated design in one 20’ container, 1500Vdc platform

• High efficiency string PCS.

• Active balancing BMS, Pack and rack level optimization design.

• Compact design, one 20’ container provides more energy but smaller size to save space.

• 100% pre-installed, plug-play upon delivery.

• FAT and commissioning done before shipping.

• ≤44t total weight allows most kind of transportations and liftings.

• 690Vac output ready to connect grid through additional step-up transformer.

C5M corrosion classification as per ISO12944 for use in harsh weather and coastal areas

1.6. Main Components List

1.7. Operating Environment

• Operating temperature: -30～+50℃;

• Relative humidity: No more than 95%, non-condensing;

• No explosive media shall be allowed in the place of use;

• No strong acid or alkali and other highly polluting substances that can be adhered to or inhaled by the equipment shall be allowed in the place of use;

• The container must be horizontally installed on a hardened foundation, with cable slots on the ground for easy routing;

• Do not install the equipment in low-lying areas to avoid flooding;

• The container must be placed in a well-ventilated area. No obstacles are allowed within 300mm of the air inlet and outlet.

• The area around the equipment should be protected according to local requirements to prevent non-professional personnel access.

• Lightning protection measures should be placed around the equipment according to local or international standards and lightning protection requirements of the building or power plant equipment.

1.8. Electromagnetic Characteristics

1.9. Main Circuit Diagram

The system topology is shown in the figure below: (The gray dotted box is the standard supply scope of SUPPLIER) \

Figure 1-1 System Main Circuit Diagram

Figure 1-2 Electrical Schematic Diagram

1.10. Certifications

The 20C2500K is fully certified according to UL and CE latest safety standards and thermal runaway tested as per UL9540A:

• UL9540 certified

• UL9540A thermal runaway tested

• UL1973 certified

• IEC 62619 certified

• CE-LVD and CE-EMC

• UL1741, IEC 62477, EN 50549-1&-2, LVD for PCS

• UN38.3, UN3536, etc.

2. Battery system architecture

2.1. Battery pack

In the 20C2500K system, each battery pack contains 104 battery cells - the smallest unit in the battery system. The battery pack is standardized, easy to install and maintain, and features high energy density, consistency, reliability, and stability. The battery pack is designed with independent liquid cooling ducts inside, which provides good heat dissipation. The battery management unit (BMU), voltage sensors, and thermal sensors are also integrated in the pack to ensure the cells' stable performance.

• BMU on-board, Active balance also

• Liquid cooling

• Multi-communication

• 104.4992kWh with 1P104S cell configure, output 332.8Vdc

• UL9540A tested

Battery Pack Specifications:

Figure 2-1 LP104 Battery pack

2.2. Battery string

The battery string consists of 4 battery packs connected in series, every 8 battery packs and 1 HVU and 1 PCS mounted on 1 battery rack..

Each battery pack is equipped with a battery monitoring unit (BMU). The 8 BMUs are connected to the battery string central management system (CMU) through CANBUS. The CMU manages the battery string and uploads battery status information and DC contactors status to the RTU via Modbus TCP/IP and receives control commands from the GPC.

• Comprehensive monitoring of battery operating status

• Reliable charge and discharge

• Built-in multi-level protection

• Modular design with high scalability

• Full metal frame

• UL9540A tested

• UL1973/IEC62619 certificated

Battery rack specifications:

Figure 2-2 LS417×2 Battery rack

2.3. Battery system

The whole battery system comprises 12 battery strings connected. Each String's DC power distribution and battery management system are also integrated inside the cabinet and are modularly designed to be easy to install and maintain.

The total capacity of the battery system is 5,015kWh.

Specifications are shown as below:

Grid Point Controller (GPC)

The GPC is the BESS system core to realize the whole system comprehensive logical control, operation model switch control, DC incoming control, blocking, protection and data communication and exchange.

Figure 3-1 Grid point controller

Specifications are shown as below

3. Grid Point Controller (GPC)

The GPC is the BESS system core to realize the whole system comprehensive logical control, operation model switch control, DC incoming control, blocking, protection and data communication and exchange.

Figure 3-1 Grid point controller

Specifications are shown as below:

Figure 3-2 Communication connects layout of system

All-round signal collection:

• State-of-charge and fault signal of each Battery String; PCS fault signal; system emergency stop signal; AC & DC circuit breaker position signal; DC contactor position signal; air conditioning operation signal; aerosol fire suppression system alarm signal;

• Total DC current and voltage, DC current and voltage of each Battery String, grid access point active power, demand power, and container ambient temperature signal;

Intelligent Communication:

• PCS, BMS, air conditioning, fire protection, third-party platform.

Comprehensive logical control:

• Monitor the DC voltage level difference between Battery Strings, and block the DC busbar connection to avoid circulating current due to large voltage difference;

• Monitor battery temperature and container ambient temperature, automatically start fan in battery cabinet to meet the battery working environment requirements;

• Adaptive adjustment of the charge/discharge power of the PCS;

• Automatically disconnect the fault Battery String, without affecting the charging and discharging of other racks;

Multiple protection includes:

• Overload protection in charging: monitor the transformer load status at the grid access point busbar in charging, and adjust the charging power or stop charging when overloading;

• Reverse power protection in discharging: monitor the transformer load status at the grid access point busbar in discharging and adjust the discharging power or stop discharging when there’s reverse power.

Human machine interaction:

• 10-inch touch screen providing comprehensive monitoring of BESS status,

• Real-time data query, alarm event query,

• Parameter values setting, and operating strategy query.

Multiple interfaces:

RS485 interface for connection to SCADA control servers or third-party platforms.

Support for ModBus TCP/IP and IEC8150 GOOSE communication for rapid grid switching.

Optional 4G and satellite IP communication gateway for critical communications backup.

4. Power Conversion System (PCS)

The energy storage bidirectional power conversion system enables the bidirectional energy conversion between batteries and the grid AC power. Its core part is an inverter composed of power electronic components with embedded control software.

• Three-level topology, up to 99% conversion efficiency, better power quality

• Integrated cluster-level battery management function, high battery availability

• Intelligent multi-stage fan speed regulation, wide temperature operation capacity, 50 °C no derating

• Support constant power, constant current, constant voltage control, with a frequency modulation, VSG, and other functions

• IP66 protection, outdoor can be installed vertically and horizontally

Figure 4-1 CBAC-430-HA-M

Figure 4-2 PCS circuit diagram

CBAC-430-HA-M main specifications are shown as below：

5. Battery Management System (BMS)

The Battery Management System (BMS) is composed of Battery Pack Management Unit (BMU) and Battery String Management Unit (CMU) which is connected to the GPC.

BMS has the functions of high-precision detection and reporting of analog signals, fault alarm, upload and storage, battery protection, parameter setting, passive equalization, Battery Module SOC calibration and information interaction with other equipment. Main features of battery management system.

• Carry out comprehensive detection of battery operation status, including voltage, current, temperature, etc.;

• High accuracy of single battery voltage detection: ± 5mv, ensuring the reliability of system data analysis;

• Multi point temperature monitoring to avoid battery thermal runaway and ensure system safety;

• Passive equalization mode, effectively delaying battery life;

• Modular design, strong scalability;

• Complete and reliable battery protection function;

The technical specifications of BMU and CMU are shown in the table below:

6. Distributed Environment Control System

6.1. Liquid chiller unit

Product Features:

• Integrated design, reducing on-site installation and commissioning costs

• Hybrid cooling with combined compressor refrigeration and natural cooling, doubling annual energy efficiency

• High-efficiency variable-frequency compressor with inverter design for energy-saving operation

• Real-time intelligent fan speed control, dynamically matching thermal load for optimal efficiency

• Equipped with RS485 interface to enable remote configuration and monitoring

• Supports automatic restart after power restoration, with multiple alarm and protection functions

• Uses environmentally friendly and high-efficiency R513A/R134a refrigerants, compliant with RoHS requirements

• High reliability, capable of continuous 365-day/year operation

• Compact size and space-saving structure

• Heating capacity of 24 kW, meeting equipment heating requirements in low-temperature environments

Liquid chiller unit (EMW600FCNS2E)

Specifications are shown as below:

6.2. Air conditioner

Figure 6-2 Air conditioner (MC06HDNC1A)

Specifications are shown as below:

6.3. Temperature and humidity transmitter

Figure 6-3 Temperature and humidity sensor

The RH811AD053F temperature and humidity sensor is designed mainly for industrial, commercial and general building of environment monitoring. It is used in so many occasions which need to be examined and controlled.Such as factory workshop, purification room, laboratory, engine room, work and commercial buildings,airport, station,museum, stadium and so on.

Specifications are shown as below:

6.4. Water immersion sensor

Figure 6-4 Appearance of water immersion sensor

Figure 6-5 Schematic diagram of triggering action

Specifications are shown as below:

7. Fire Fighting System

7.1. Fire controller

Figure 7-1 Fire controller

Specifications are shown as below:

7.2. Aerosol generator

Figure 7-2 Fire controller

Specifications are shown as below:

7.3. Fire detection and alarm system

7.3.1. Temperature detector

Figure 7-3 Temperature detector

Specifications are shown as below:

7.3.2. Smoke detector

Figure 7-4 Photoelectric smoke detector

Specifications are shown as below:

7.3.3. Carbon monoxide detector

Figure 7-5 Carbon monoxide detector

Specifications are shown as below:

7.3.4. Hydrogen detector

Figure 7-6 Hydrogen detector

Specifications are shown as below:

7.3.5. Alarm bell

Figure 7-7 Alarm bell

Specifications are shown as below:

7.3.6. Audible and visual alarm

Figure 7-8 Acousto-optic alarm

Specifications are shown as below:

7.3.7. Gas release indicator

Figure 7-9 Gas release indicator

Specifications are shown as below:

8. Lighting System

Figure 8-1 20W LED Linear Light

Specifications are shown as below:

9. Emergency stop button

Figure 9-1 Emergency stop button of BESS

Specifications are shown as below: