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AIR-COOLED INTEGRATED ENERGY STORAGE · TECHNICAL SPECIFICATION
50/107kWh Air-Cooled Integrated Energy Storage System
WES-50/107 air-cooled integrated energy storage system: an all-in-one ESS integrating battery system, battery management, monitoring, fire protection, PV integration, energy metering and cloud O&M platform. Plug-and-play, easy to install, widely used in C&I energy storage, microgrids, distribution-area storage and more.
Fully integrated · Plug-and-play Smart air cooling · 1.5kW cabinet air conditioner Two-level fire protection · Perfluorohexanone + aerosol 3000 cycles @25℃ DOD80%
107.5kWh Rated capacity
50kW Rated power
716.8V Rated Voltage
88% System Cycle Efficiency
Product Overview
System OverviewThe WES-50/107 air-cooled integrated energy storage system integrates battery system, battery management system, monitoring system and auxiliary systems (temperature control, security) in one unit: plug-and-play, modular build, smart monitoring, scalable configuration.
Integration
Fully Integrated Design
INTEGRATED DESIGN
Integrates battery, BMS, fire protection, PV integration, energy metering and cloud O&M platform for easier design, construction, commissioning and O&M.
Rated capacity 107.5kWh
Rated power 50kW
Architecture
Modular Build
MODULAR BUILD
Plug-and-play with short installation time and easy O&M; standard distributed cabinet design.
Cell 3.2V 150Ah LiFePO4
String Connection 1P224S
Monitoring
Smart Monitoring
SMART MONITORING
Real-time online intelligent monitoring and early warning for a safe and reliable system.
Cycle Efficiency 88% (rated conditions)
Cell Life 3000 cycles @25℃ DOD80%
Scalability
Scalable Configuration
SCALABLE
Highly scalable — standard modules can be combined to build products of different capacities as required.
Battery system 14 battery boxes · 51.2V/150Ah
Design Platform 1000V
Fire
Two-level Fire Protection
DUAL FIRE PROTECTION
Aerosol inside PACK boxes protects battery modules; perfluorohexanone in the cabinet suppresses fire rapidly.
Extinguishant Aerosol + Perfluorohexanone
Protection rating IP54
O&M
Cloud O&M Platform
CLOUD O&M
EMS centrally manages PCS, BMS, fire protection, air conditioning and PV inverters, with cloud platform access.
Communication Interface CAN · RS485
Noise ≤75dB
System Scheme
System SchemeThe energy storage capacity of this project is 107.5kWh, with the battery system entirely composed of LiFePO4 batteries; standard distributed cabinet design integrating battery system, energy metering unit, monitoring system and heat dissipation system.
001
01 TOPOLOGY
System Block Diagram
System Block Diagram
An independent 107.5kWh ESS is integrated in the WES-50/107: the battery system connects to the PCS via the high-voltage box, working with BMS, EMS, fire protection and air-cooled temperature control, supporting PV integration and energy metering.
- Total Energy 107.5kWh
- Battery system All LiFePO4 Battery
- PV Integration Supported
- Design Platform 1000V
Energy Storage System Block Diagram
002
Cabinet Dimension Drawing
02 CONFIGURATION
Product Configuration Scheme
Product Configuration
Standard distributed cabinet design: the cabinet integrates a 107.5kWh battery system (battery modules, battery boxes, battery racks, high-voltage box, one two-level BMS), one energy metering unit, monitoring system and heat dissipation system.
- Overall Dimensions W1173×D1210×H2190mm (excluding lifting rings)
- Depth incl. air conditioner D1210mm
- Overall Weight ≈1.45t (estimated, subject to final drawings)
- Installation Floor Installation · Plug-and-play
Main Specifications
Main SpecificationsModel WES-50/107
Rated capacity 107.5kWh
Rated power 50kW
Cell 3.2V 150Ah LiFePO4
Rated Voltage 716.8V
Voltage Range DC627.2V 817.6V
Overload Capability 1.1× long-term · 1.2× for 1min
Charge Current 0.5C 0℃ 45℃
Discharge Current 0.5C -20℃ 55℃
String Connection 1P224S, 1 parallel 224 in series
Cooling Method Smart ventilation with cabinet air conditioner
Fire Protection PACK box + cabinet level
Noise ≤75dB
Weight ≈1.45t (estimated)
Protection Rating IP54
Relative Humidity 0–95% (non-condensing)
System cycle efficiency 88% (under rated conditions)
Communication Interface CAN, RS485
Cell Life 3000 cycles @25℃ DOD80%
Battery System & BMS
Battery System & BMSThe battery subsystem is designed on a 1000V platform with total voltage 716.8V and total energy 107.5kWh, comprising 14 battery boxes; the BMS adopts a two-level architecture with 1 BCU managing 14 BMUs.
003
03 CELL
Cell Parameters
Cell Parameters
High-safety, long-life large-capacity 150Ah LiFePO4 cell design, dimensions 173.8×54.3×149.3mm (L×W×H), weight approx. 2.79kg.
- Nominal Capacity 150Ah RT@0.5C Discharge
- Nominal Voltage 3.2V · LiFePO4 cathode
- Charge/Discharge Cut-off 3.65V / 2.5V (2.0V at -20~0℃)
- Max. Continuous Charge/Discharge 1C · standard 0.5C (25±2℃)
- Operating environment Charge 0~55℃ · Discharge -30~55℃ · max.90%RH
Cell Dimension Diagram
004
Battery Box Diagram
04 PACK
Battery Box & System Design
Battery Box & System
Battery box voltage 51.2V, capacity 150Ah, using one 16S BMU; dimensions after assembly approx. W473×D622×H182mm, total weight approx. 65kg; 14 battery boxes in series form a 716.8V / 107.5kWh battery system.
- Battery Box 51.2V · 150Ah · 16S BMU
- Battery Box Dimensions W473×D622×H182mm · approx. 65kg
- System Composition 14 battery boxes · 1P224S
- Total System Voltage 716.8V 627.2~817.6V
05
05 BMS
Battery Management System
Battery Management System
The BMS adopts a two-level architecture: 1 BCU performs unified management, with 14 BMUs under each BCU and each BMU managing a 1P16S module, providing the following ten functions:
System Architecture Two-level architecture · 1 BCU + 14 BMU · 1P16S
Data Recording 10000+ events · min. 30 days of history
- High-Precision Monitoring Real-time detection and reporting of string voltage/current, cell terminal voltage, multi-point temperature and leakage
- Alarm & Reporting Overvoltage, undervoltage, overcurrent, high/low temperature, leakage and communication alarms, displayed locally and reported
- Protection Function Fault isolation when analog values exceed safety thresholds; faulty strings are taken offline and protection info reported
- Self-Diagnosis Internal/external communication interruption alarms, analog acquisition fault self-diagnosis, local display and reporting
- Balancing Function Efficient balancing strategy maintains battery consistency
- Parameter Setting Local touchscreen / remote Ethernet, with password authorization
- Status Display Operating status, cell/string voltage & temperature, current/SOC/SOH, alarm and protection info
- Event Recording Local storage of events and historical data, over 10000 events recorded
- String Connect/Disconnect Executes monitoring commands to connect or disconnect strings via power contactors
- Capacity & SOC Calibration Works with the PCS through full charge/discharge to complete capacity and SOC calibration
Air-Cooled Temperature Control
Air-Cooled Temperature ControlThe air-cooling unit adopts a wall-mounted cabinet air conditioner (1.5kW), monitoring cell temperature in real time and adjusting the air conditioner to keep the system within the suitable temperature range.
1500W
Cooling Capacity Cooling Capacity
1500W cooling capacity at L35/L35, smart ventilation by cabinet air conditioner.
1000W
Heating Capacity Heating Capacity
Automatic heating in low-temperature environment keeps the battery at a suitable working temperature.
370m³/h
Circulating Air Volume Air Volume
Uniform heat dissipation through internal air ducts avoids local heat accumulation.
37.2L/D
Dehumidifying Capacity Dehumidifying
37.2L/D dehumidifying at L27℃/85%RH, non-condensing operation.
Power Supply Range 220±15%VAC 50Hz
Cooling Capacity (L35/L35) 1500W
Rated Power (L35/L35) 580W
Rated Current (L35/L35) 2.6A
Max. Operating Current 4.6A
Heating Capacity 1000W
Dehumidifying Capacity (L27℃,85%RH) 37.2L/D
Rated Dehumidifying Power 525W
Circulating Air Volume 370m³/h
Control Strategy Real-time monitoring of cell temperature and air conditioner adjustment
PCS Energy Storage Converter
PCS SystemThe PCS converter performs AC/DC conversion and bidirectional energy flow between grid and battery; it is the main actuator and core component of the ESS: three-phase four-leg topology with multi-unit paralleling and active/reactive power regulation.
006
06 PCS
WL-PCS-50/0.4-W Converter
PCS Converter
Adopts a three-phase four-leg topology with single-phase and three-phase active/reactive control, precisely solving three-phase imbalance; supports multi-unit paralleling with good scalability and active/reactive power regulation.
- DC Voltage Range DC600~950V (full-load output at 630~900V)
- Rated power 50kW · max. efficiency ≥98%
- Rated Voltage AC400V · three-phase four-wire · non-isolated
- Charge/Discharge Conversion 100ms
- Grid Adaptability 380V(-20%~+15%) · 50/60Hz±2.5Hz
- Protection & Noise IP20 · ≤75dB · forced air cooling
PCS Topology Diagram
Model WL-PCS-50/0.4-W · 1 circuit
DC Voltage Range DC600V–950V (full-load output at 630V-900V)
Max. DC current 95A · rated DC power 50kW
Voltage/Current Regulation Accuracy ≤±2% / ≤±5% · voltage and current limiting provided
Overload capability 1.1× long-term · 1.2× for 1min
Rated output current 72A / 76A
Total Current Harmonic Distortion ≤3% (full load)
Power factor -0.99~+0.99 · DC component ≤0.5%
Charge/discharge transfer time 100ms
Off-Grid Output AC400V±3% · 50/60Hz · THDU≤3% (linear load)
Unbalanced Load Capability 100%
Permitted Ambient Temperature -20℃~50℃ (derating above 45℃)
Humidity / Noise / Protection ≤95% · ≤75dB · IP20
Altitude Derating required above 2000m
Dimensions / Weight W480×H260×D659mm · 70kg
Heat Dissipation & Ventilation Front intake, rear exhaust · 467CFM · intake ≥43232mm² · exhaust ≥69171mm²
Emergency Stop Module IO receives emergency stop switch command
Communication Interface BMS: CAN · EMS: RS485 · Protocol V2.3.14-50kW
Fire Protection & Energy Management
Fire Protection & EMSThe system adopts two-level fire protection: aerosol inside PACK boxes protects battery modules, spreading rapidly to cut off air on thermal runaway; liquid perfluorohexanone in the cabinet suppresses fire rapidly upon temperature trigger. EMS centrally manages PCS, BMS, fire protection, air conditioning and PV inverters and completes energy dispatch.
007
07 FIRE
Two-level Fire Suppression System
Two-level Fire Suppression
Aerosol is used inside PACK boxes to protect battery modules, spreading faster across the whole box and cutting off air on thermal runaway; liquid perfluorohexanone is installed in the cabinet as extinguishant, suppressing fire rapidly upon temperature trigger.
- PACK Level Aerosol · protects battery modules
- Cabinet Level Liquid Perfluorohexanone Device
- Trigger Method Temperature trigger · rapid fire control
- Extinguishant Features Compared with traditional alkane and water-based extinguishants: safe, clean and efficient
PACK Aerosol Fire Extinguishing Device
008
EMS Topology Diagram
08 EMS
EMS Energy Management System
Energy Management System
The EMS system centrally manages storage PCS, BMS, fire protection, air conditioning, grid-tied PV inverters and other equipment, monitors and manages each system, completes energy dispatch and supports cloud platform access.
- Microgrid Dashboard Cumulative station revenue, energy consumption analysis, real-time power and overall storage/PV status
- Microgrid System PCS three-phase power, battery status, SOC, BMS chargeable/dischargable energy, PV generation
- Grid Load Grid and load parameters: daily energy, active/reactive/apparent power, power factor
- Energy management Manual / automatic / upper-level dispatch control modes
- Records & Alarms Operation logs, component alarm information, energy statistics by grid/storage/load
Perfluorohexanone Fire Extinguishing Device
PERFLUOROHEXANONE
Liquid perfluorohexanone is installed in the cabinet as extinguishant and suppresses fire rapidly upon temperature trigger; compared with traditional alkane and water-based extinguishants, it is safe, clean and efficient.
Installation Location In cabinet · liquid pipeline delivery
Trigger Method Temperature Trigger
EMS Backend & Cloud O&M
EMS DASHBOARD & CLOUD
The EMS backend displays storage station operating status, operating mode and power curves in real time, supporting distribution-area storage low-voltage management as well as peak-valley mode, remote dispatch, PV consumption, demand expansion, anti-reverse-power and DC microgrid functions.
Access Method Ethernet · Cloud platform
Dispatch Mode Manual · Automatic · Upper-level dispatch
Standards & Supply List
Standards & Supply ListGB/T 36276 Electrical energy storage with lithium-ion batteries
GB/T 34131 Technical specification for lithium-ion BMS of electrochemical energy storage stations
GB/T 36547 · 36548 Technical rules and test specification for electrochemical storage systems connected to the grid
GB/T 36558 · 36549 General technical conditions, operation indicators and evaluation of electrochemical storage systems
GB 4208 · GB7251 Degrees of protection (IP code) · Low-voltage switchgear assemblies
GB51309 Technical standard for fire emergency lighting and evacuation indication systems
Battery Cabinet BATTERY CABINET
1 set
150Ah LiFePO4 · 1P224STotal energy 107.5kWh
High-Voltage Box HV BOX
1 set
1000V / 250AIncl. DC metering & protection
Battery Management System BMS
1 set
BMU, BCU and matching harnessTwo-level architecture
Air-Cooling System AIR-COOLING
1 set
1.5kW cabinet air conditionerReal-time adjustment by cell temperature
Fire Protection System FIRE PROTECTION
1 set
Cabinet perfluorohexanone + PACK aerosolTwo-level fire protection
Cabinet CABINET
1 set
Prewired distribution components in cabinetStandard distributed cabinet
Energy storage converter PCS
1 unit
50kW · WL-PCS-50/0.4-WThree-phase four-leg · forced air cooling
EMS EMS
1 set
Distribution-area low-voltage management · Peak-valley mode · Remote dispatchPV consumption · Demand expansion · Anti-reverse power · DC microgrid
Make Every kWh of Green Power More Valuable
WOLUN AIR-COOLED INTEGRATED ESS
50/107kWh air-cooled integrated energy storage system: fully integrated, plug-and-play, two-level fire protection and cloud O&M platform. Contact us for C&I storage solutions and quotations.
Sichuan Wolun Electric Co., Ltd. SICHUAN WOLUN ELECTRIC CO., LTD.
A wind-solar-storage-charging integrated energy system provider — an industrial, integrated, high-tech group.
Address
- WOLUN New Energy Group Co., Ltd.: Room 2602, 26F, Unit 1, Building 5, No. 8 Liuli Road, Jinjiang District, Chengdu, Sichuan
- Sichuan Wolun Electric Manufacturing Co., Ltd.: No. 108 Tianyuan Street, Xinmin Town, Da'an District, Zigong, Sichuan
Contact
- Group hotline: +86 028-68938363
- Factory hotline: +86 0813-5308858
- Domestic sales: +86 188 2888 5368
- Domestic e-mail: wolunxs@wolungroup.com
- Overseas sales: +86 188 2888 5328
- Overseas e-mail: wolunhw@wolungroup.com
- Aftersales: 400 604 1668
© WOLUN NEW ENERGY GROUP 50/107kWh Air-Cooled Integrated Energy Storage System Technical Specification
