20C2500K BESS container

description 20c2500k inf 01 v1 brochure for 20c2500k bess container architecture /#architecture the 20c2500k bess container has modular architecture with liquid cooled battery packs made with lfp cells and a battery management unit (bmu) battery cluster / strings with a controller (cmu) separate ac/dc inverters (pcs) for each battery string liquid temperature control system and hvac dehumidifier firefighting system, backup power bess controller (gpc) to handle safety, automatic operation and data and control communication with external bess and ems scada container description /#container description 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 battery strings are installed on both sides of the battery container, 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, bess controller with 24h back up power, air conditioner and auxiliary power supply distribution system independent string inverters /#independent string inverters we use independent string inverters independent string inverters provide better capacity protection compared to central inverters by comparison, with central inverters, over time, charge and discharge performance of parallel battery racks will vary due to divergences in the internal resistance of the cells tests have shown that capacity loss increases by up to 2 % per year when eight racks are connected in parallel with a central inverter compared to non parallel connections with independent inverters batteries connected in parallel can also lead to current loops and barrel effects due to voltage differences, resulting in a reduction in the usable capacity of the system tests data also show that when two battery racks are connected in parallel to a central inverter, and the soc differs by 8%, after a complete charge discharge cycle, the total discharge capacity of the energy storage system with independent pcs inverters (acdc or dcdc) is increased by up to 7% so independent string inverters offer the best long term performance specifications /#specifications ac side /#ac side nominal capacity 2,580kw/5,015kwh rated ac output power 2,580kw max ac output power 2,838kva rated output voltage 690v output voltage range 586 5 759vac (optional) rated frequency 50/60hz rated output current 2,158aac adjustable power factor 0 1 1 leading or lagging (controllable) thdi <1 5% (at rated power) max efficiency 98 7% output wiring 3 phase 3 wire dc side rated voltage 1,331 2vdc lower voltage limit 1,164 8vdc upper voltage limit 1,476 8vdc rated current 2,158a battery cell capacity 314ah total number of cells 4,992 cells per battery module 52 in series battery modules per string 8 in series strings per container 12 in parallel actual capacity 5,015 kwh general /#general bess container dimensions w6,058xd2,438xh2,896mm bess weight < 42 3t ip protection ip54 operating temperature range normal 35 45℃ relative humidity 0 95% (non condensing) max working altitude 2,000m/6,562ft bess cooling liquid cooling & air conditioner control system communication modbus tcp certifications ul9540, iec62619, en 50549 2, iec 61000 2& 4, iec 62477, ul 1973, en50549 2, ieee 1547, fcc, un3536 bess capacity over project life /#bess capacity over project life the evaluation point is on mv transformer poc output point, considering the auxiliary electrical loss and internal consumption cells are rated to 10,000 full cycles (0 5p 25°c 100% dod) to > 70% of initial capacity in normal operating conditions, bess is rated at 10,000 full cycles over 12 to 15 years to > 70% of initial capacity (see below degradation curves) most likely scenario 1 full cycle per day or about 365 full cycles per year over 15 years at 0 5p rate high usage scenario up to 2 full cycles per day (about 730 full cycles per year) over 15 years at 0 5p rate {% include " gitbook/includes/powergrid efficiency md" %} certifications /#certifications the 20c2500k and its active components are fully certified according to ul and ce latest safety standards and thermal runaway tested as per ul9540a ul9540a thermal runaway certified ul1973 certified iec 62619 certified ce lvd and ce emc ul1741, iec 62477, en 50549 1& 2, lvd for pcs un38 3, un3536, etc fingrid sjv2024 certified by tuv for pcs