BESS DC Cabin Energy Storage Battery With Thermal Management System
The ESS-DC-1250/2500-F represents a cutting-edge Battery Energy
Storage System (BESS) solution designed for large-scale energy
storage applications. This DC-coupled system is engineered to
deliver high performance, reliability, and safety in utility-scale,
commercial, and industrial energy storage deployments. The modular
architecture allows for flexible configurations with capacities
ranging from 1.25MWh to 2.5MWh, making it adaptable to diverse
project requirements.
As a DC-coupled system, the ESS-DC-1250/2500-F directly interfaces
with renewable energy sources (such as solar PV arrays) and power
conversion systems (PCS) without requiring additional AC-DC
conversion stages. This design approach significantly improves
overall system efficiency by reducing energy conversion losses
typically associated with AC-coupled systems. The system consists
of several key components:
Battery Racks: Pre-configured racks containing lithium-ion battery modules with
integrated battery management systems (BMS)
Power Conversion System: High-efficiency bidirectional DC-AC converters (typically rated
at 1500V DC input)
Energy Management System (EMS): Advanced control platform for system monitoring, optimization,
and grid interaction
Thermal Management System: Precision cooling solution maintaining optimal operating
temperatures
Safety Systems: Multi-level protection including fire suppression and gas
detection
The ESS-DC-1250/2500-F is particularly notable for its "F"
configuration, which refers to its specialized electrical
architecture designed for fast response and frequency regulation
applications. This configuration allows for rapid power injection
or absorption, making it particularly suitable for grid
stabilization services.
Core Technologies and Innovations
Advanced Battery Technology
The ESS-DC-1250/2500-F utilizes lithium iron phosphate (LFP) battery chemistry, which offers superior safety characteristics and cycle life
compared to other lithium-ion variants. The system features:
Cell-level optimization: Each battery cell is individually monitored and balanced by the
BMS to ensure uniform performance and longevity
Pack-level thermal runaway prevention: Innovative design effectively contains thermal events within
individual battery packs, preventing propagation to the entire
system
Long cycle life: Engineered for 6,000+ cycles at 80% depth of discharge (DOD),
significantly reducing levelized cost of storage (LCOS)
Intelligent Power Conversion
The system incorporates 1500V DC power conversion technology, which reduces system costs and improves efficiency compared to
traditional 1000V architectures. Key features include:
Bidirectional power flow: Seamless transition between charging and discharging modes with
response times <100ms
Wide voltage range operation: Compatible with 1000V-1500V DC input, accommodating various
battery states of charge
High conversion efficiency: Peak efficiency exceeding 98.5% through advanced topology and SiC
power devices
Grid-Forming Capability
A standout feature of the ESS-DC-1250/2500-F is its grid-forming capability, allowing it to:
Create and maintain grid voltage and frequency independently (black
start capability)
Provide virtual inertia to stabilize grids with high renewable
penetration
Operate in both grid-connected and islanded modes seamlessly
Smart Energy Management
The integrated Energy Management System (EMS) delivers:
Four-tier refined management: Real-time monitoring from cell to system level
AI-powered optimization: Dynamic adjustment of charge/discharge strategies based on
electricity prices, load patterns, and weather forecasts
Automatic SOC calibration: Reduces manual intervention and improves state-of-charge accuracy
Application Scenarios and System Integration
Utility-Scale Energy Storage
The ESS-DC-1250/2500-F is ideally suited for grid-scale energy storage applications:
Peak shaving: Reducing demand charges by discharging during peak periods
Frequency regulation: Providing fast-responding frequency control ancillary services
(FCAS)
Renewable energy smoothing: Mitigating solar/wind generation variability
Capacity deferral: Delaying costly grid infrastructure upgrades
Specialized Applications
Renewable Energy Integration
The system excels in renewable-plus-storage configurations:
Commercial & Industrial (C&I) Applications
For C&I users, the system offers:
Black start capability: Restoring power after grid outages
Weak grid support: Stabilizing remote or underdeveloped grids
High-altitude operation: Certified for installations up to 5000m elevation
Solar PV pairing: Storing excess solar generation for use at night
Wind energy firming: Compensating for wind variability
Hybrid power plants: Combining multiple renewable sources with storage
Backup power: Providing uninterrupted power during outages
Microgrid integration: Serving as the backbone of independent energy systems
Demand charge management: Reducing maximum demand penalties
Energy arbitrage: Storing energy when prices are low and using when prices are high
