Energy Storage Systems (ESS)
Project Overview
As a key enabling technology for building new power systems, energy storage systems facilitate electrical energy transfer across time dimensions, effectively smoothing renewable energy fluctuations, enhancing grid flexibility and stability, and optimizing power resource allocation. Sieyuan Qingneng, adhering to the philosophy of "Innovative Smart New Power," leverages its deep power electronics technology expertise to offer comprehensive energy storage system solutions covering all scenarios.
This product series is designed and manufactured in strict compliance with international and national standards, including the IEC 62933 Electrical Energy Storage (EES) Systems series, GB/T 36276 Lithium-ion Battery for Electrical Energy Storage, and GB/T 34131 Technical Specification for Lithium-ion Battery Management System for Electrochemical Energy Storage Power Stations. The system encompasses two core product lines: Containerized Energy Storage Systems and Cabinet/Rack-Mounted Energy Storage Systems. It integrates high-safety lithium iron phosphate battery cells, intelligent Battery Management Systems (BMS), high-efficiency bidirectional Power Conversion Systems (PCS), advanced thermal management systems, and multi-layer fire protection architectures. These systems are widely applicable across generation-side, grid-side, commercial & industrial user-side, and microgrid applications.
As an energy storage system provider committed to delivering "Ultra Hassle-Free, One-Stop Solution Services," we contribute to the global energy transition and carbon neutrality goals through full-time-domain multi-medium energy storage technology, modular design concepts, and intelligent management platforms.
Product Classification
Based on system architecture, capacity scale, and application scenarios, this product series covers the following two categories:
|
Product Category |
Definition |
Capacity Range |
Applicable Standards |
Main Applications |
|
Containerized ESS |
A turnkey, integrated solution where battery clusters, PCS, transformer, EMS, thermal management system, fire protection system, etc., are fully integrated within a standard marine shipping container. Factory pre-assembled for plug-and-play installation on-site. |
MWh to hundred-MWh level (Standard configurations: 1.7MWh/2.5MWh/5MWh/10MWh) |
IEC 62933, UL 9540, GB/T 36276 |
Large-scale PV/wind power plant integration, grid-side frequency regulation and peak shaving, independent shared energy storage stations, remote areas such as mines and islands |
|
Cabinet/Rack-Mounted ESS |
An independent energy storage unit housed in a standard rack or custom cabinet, integrating battery modules, PCS, BMS, thermal management, and other components. Supports parallel expansion with multiple units. |
kWh to ten-MWh level (Single cabinet capacity: 100kWh~1MWh; max 1.72MWh with parallel connection) |
IEC 62619, UL 1973, GB/T 34131 |
Commercial & industrial park peak shaving and valley filling, EV charging stations, data center backup power, factory load management, commercial buildings |
|
esGrid Multi-Technology ESS |
An innovative architecture integrating lithium batteries, Electric Double-Layer Capacitors (EDLC), and Hybrid Ultra-Capacitors (HUC) into a single system. Optimizes the advantages of each energy storage medium for efficient full-time-domain frequency regulation, peak shaving, and ancillary service value |
Customized per requirements |
Enterprise Technical Standards |
Renewable energy farm frequency regulation, thermal power plant joint frequency regulation, independent energy storage power stations |
Product Description
Containerized ESS
The Containerized ESS utilizes a 20-foot or 40-foot standard marine shipping container as the integration platform, pre-installing all core energy storage components inside to form a self-contained, transportable energy storage unit. The interior is functionally divided into battery cluster area, PCS/transformer area, EMS control area, and auxiliary equipment area, with independent separation between zones to ensure safety.
Product Portfolio:
● 5MWh Liquid-Cooled Integrated Energy Storage System: A 5th generation 20-foot container ESS product with an energy density >18% higher than previous generations. Employs a string PCS architecture for cluster-level independent control, eliminating parallel circulating current losses.
● 2.5MWh Air-Cooled Energy Storage System: Standard 20-foot container configuration with an intelligent air-cooled thermal management solution, suitable for moderate climate regions.
● 10MWh Liquid-Cooled Energy Storage System: 40-foot container design supporting multi-cabinet matrix combination to meet hundred-MWh scale project requirements.
Core Configuration:
● Battery System: Uses Grade A+ LFP battery cells with a cycle life of ≥6,000 cycles at 80% DOD and a calendar life of ≥10 years.
● Power Conversion System: High-efficiency bidirectional PCS supporting both grid-connected and off-grid operation modes with a conversion efficiency of ≥98%.
● Thermal Management System: Optional intelligent air-cooled or liquid-cooled solutions; the liquid-cooled system controls battery temperature difference within ≤1.5°C.
● Fire Protection System: Multi-level protection, including cluster-level aerosol fire suppression, water spray deluge, and explosion venting.
● Monitoring System: On-site EMS plus cloud platform, supporting remote monitoring and dispatch.
Cabinet/Rack-Mounted ESS
The Cabinet/Rack-Mounted ESS features a modular design, integrating battery modules, PCS, BMS, and other components into a compact cabinet, forming a standardized energy storage unit. A single cabinet typically ranges from 100kWh to 1MWh and supports parallel expansion of up to 8 units to reach MWh scale.
Product Portfolio:
● 215kWh Liquid-Cooled Commercial & Industrial ESS Cabinet: Standard product with single cabinet power of 100kW, supporting expansion up to 1.72MWh with 8 units in parallel.
● 125kW/261kWh Immersion-Cooled ESS System: Uses insulating, flame-retardant coolant to fully immerse battery modules, achieving full-contact heat dissipation for cells while eliminating fire and thermal runaway risks by isolating oxygen.
● 100kWh Air-Cooled Modular ESS Cabinet: Compact design with a footprint of only 1.5 square meters, supporting hot-swappable maintenance.
● Residential Stackable ESS: Capacity range of 10.6~25kWh, supporting vertical stacking of 2~5 battery modules, IP67 protection rating.
Core Configuration:
● Battery Modules: Standardized battery modules (5~20kWh/module) supporting hot-swappable maintenance.
● PCS Integration: 100kW energy storage converter with max conversion efficiency ≥98%, supporting multi-unit parallel connection and intelligent health monitoring.
● Thermal Management: Intelligent air or liquid cooling ensures battery operation within the optimal temperature range.
● Safety Protection: Cluster-level fusing protection, smoke detection, active pressure relief.
● Communication Interfaces: Supports RS485, Ethernet, Modbus TCP, and other protocols.
esGrid Multi-Technology ESS
Addressing the limitations of traditional single-lithium battery energy storage systems in diverse application scenarios such as renewable energy farms, thermal power plants, independent/shared storage stations, and commercial & industrial sites, we have innovatively launched the esGrid field-station multi-technology energy storage system with an integrated architecture combining lithium batteries, EDLC, and HUC.
Technical Features:
Optimizes the advantages of each energy storage medium, achieving a perfect combination of power-type and energy-type storage.
Efficiently realizes full-time-domain frequency regulation (primary, secondary, tertiary), peak shaving, and ancillary service economic value.
EDLC ultra-capacitor cells and HUC hybrid ultra-capacitor modules offer high energy density, long life, and good low-temperature performance.
Technical Features & Advantages
1. Intrinsic Safety Design
|
Safety Level |
Technical Measures |
Advantage Description |
|
Cell Level |
Intrinsically safe LFP cells, thermal runaway onset temperature >220°C |
No fire or explosion during abuse tests such as nail penetration, overcharge, or extrusion |
|
Module Level |
Isolation bracket design between cells to prevent thermal propagation |
Single-cell thermal runaway does not propagate to adjacent cells |
|
Cluster Level |
Independent battery cluster connection eliminates parallel circulating currents |
Increases usable system capacity, reduces safety risks |
|
System Level |
Multi-level fire protection: cluster-level aerosol fire suppression + water spray deluge + explosion venting |
Compliant with UL 9540A thermal runaway propagation testing requirements |
● Immersion-Cooled ESS Safety Technology: The 125kW/261kWh immersion-cooled ESS system uses insulating, flame-retardant coolant to fully immerse battery modules, fundamentally preventing thermal runaway risk. Cell temperature difference is ≤1.5°C, system conversion efficiency ≥90%.
2. High Integration & Modularity
● Factory Prefabrication: Systems are fully pre-assembled and tested at the factory; only lifting and external connections are required on-site, reducing construction lead time from months to weeks.
● Plug-and-Play: Integrated transport and single-hook lifting enable quick and easy on-site installation.
● Modular Expansion: Supports multi-unit parallel connection for flexible capacity expansion as needed.
● Standardized Interfaces: Unified electrical and communication protocols compatible with mainstream PCS and EMS.
3. Intelligent Management
● Three-Level BMS Architecture: Features flexible alarm threshold settings, automatic system protection, active balancing strategies, and rapid analysis of massive data.
● Cloud Platform Monitoring: Enables remote data acquisition, fault warning, and performance analysis.
● Predictive Maintenance: Early fault detection and life prediction based on big data algorithms.
● Supports Multiple Dispatch Modes: Peak shaving, demand management, frequency regulation, backup power, black start.
4. Strong Environmental Adaptability
● Wide Operating Temperature: -30°C to +55°C (-40°C to +60°C optional).
● High Ingress Protection: IP54 to IP55 for containerized models; IP54 to IP65 for cabinet models.
● Weather-Resistant Design: Resists salt spray, dust, and corrosion; suitable for harsh environments like deserts, coastal areas, and high altitudes.
● Precise Thermal Management: Liquid cooling system achieves temperature control accuracy of ±1.5°C, ensuring battery consistency.
5. Long Life & Economy
● Battery Cell Life: 6,000~12,000 cycles at 80% DOD retention.
● System Efficiency: DC side efficiency ≥95%; AC side round-trip efficiency (RTE) ≥85%.
● Low LCOE: Optimized design and intelligent control reduce levelized cost of energy.
● Supports Multiple Business Models: Peak-valley arbitrage, demand management, demand response, ancillary services.
6. Grid-Forming Capability & System Support
Addressing the "high penetration of power electronics and high renewable energy share" characteristics of new power systems, the ESS integrates grid-forming technology:
● Grid-Forming ESS: Possesses voltage source characteristics, supporting stable operation of weak grids.
● Zero-Latency Response: Millisecond-level power response meets grid fast regulation requirements.
● Adaptability to Strong/Weak Grids: Adapts to different grid strengths to ensure system stability.
● Black Start Capability: Can establish a grid independently without external power.
Technical Parameters
|
Parameter |
Containerized ESS (5MWh Standard) |
Cabinet ESS (215kWh Standard) |
Immersion-Cooled ESS |
Remarks |
|
Rated Capacity |
5MWh @ 0.5C |
215kWh @ 0.5P |
261kWh |
Customizable C-rate |
|
Rated Power |
2.5MW |
100kW |
125kW |
Supports 1C short-term overload |
|
Battery Type |
LFP 3.2V/280Ah-314Ah |
LFP 3.2V/100Ah-280Ah |
LFP |
Grade A+ cells |
|
System Voltage |
1000V~1500V DC |
600V~800V DC |
800V DC |
Customizable |
|
Cycle Life |
≥6,000 cycles @ 80% DOD |
≥6,000 cycles @ 80% DOD |
≥6,000 cycles |
Long-life type ≥8,000 cycles optional |
|
Calendar Life |
≥10 years |
≥10 years |
≥10 years |
Extendable to 15-20 years |
|
Charge/Discharge Efficiency |
≥85% (AC side RTE) |
≥87% (AC side RTE) |
≥90% |
Including PCS losses |
|
Response Time |
≤100ms |
≤50ms |
≤50ms |
To rated power |
|
Ingress Protection |
IP54 |
IP54~IP65 |
IP65 |
Standard for outdoor use |
|
Cooling Method |
Air/Liquid cooling optional |
Air/Liquid cooling optional |
Immersion cooling |
Immersion cooling ΔT ≤1.5°C -6 |
|
Fire Protection |
Aerosol + Water Spray + Explosion Venting |
Aerosol + Active Pressure Relief |
Immersion + Aerosol |
UL 9540A compliant |
|
Dimensions (W×D×H) |
20ft: 6.1×2.4×2.9m; 40ft: 12.2×2.4×2.9m |
1.2×1.2×2.4m |
1.6×1.4×2.4m |
Customizable |
|
Weight |
20ft: ~30 tons; 40ft: ~70 tons |
~2.5 tons |
~3.5 tons |
|
|
Communication Interface |
Ethernet/RS485/4G |
Ethernet/RS485/Modbus TCP |
Ethernet/RS485 |
Supports IEC 61850 |
|
Grid Interconnection Standard |
IEC 62933/UL 9540/GB/T 36276 |
IEC 62619/UL 1973 |
IEC 62619 |
CE/VDE 4110 optional |
Materials
|
Component |
Standard Material |
Optional Material |
Feature Description |
|
Cell |
Lithium Iron Phosphate (LFP) |
NMC (High Energy Density) |
Intrinsically safe, long life |
|
Battery Module Enclosure |
Flame-retardant ABS/PC |
Aluminum Alloy/Sheet Metal |
UL94 V-0 flame retardant rating |
|
Battery Cluster Rack |
Hot-dip galvanized steel |
Stainless Steel 304 |
High strength, corrosion resistant |
|
Cabinet Enclosure |
Cold-rolled steel, electrostatic powder coating |
Stainless Steel 304/316 |
Outdoor anti-corrosion design |
|
Container Body |
Weathering steel |
Stainless steel composite plate |
Marine container standard |
|
Immersion Coolant |
Insulating flame-retardant coolant |
Synthetic fluorinated fluid |
High dielectric strength, non-flammable -6 |
|
Insulation Material |
Polypropylene (PP) |
Epoxy resin / Silicone |
High dielectric strength |
|
Sealing Gasket |
EPDM |
Silicone rubber |
Aging resistant, IP protection |
|
Busbar / Connection Bar |
Tin-plated copper busbar |
Silver-plated copper busbar / Aluminum busbar |
Low contact resistance |
|
Cooling Medium |
Deionized water + Ethylene glycol |
Synthetic coolant |
Anti-freeze, anti-corrosion |
|
Fire Extinguishing Agent |
Novec 1230 / Aerosol |
Heptafluoropropane / Water spray |
Environmentally friendly, high efficiency |
Appearance
Standard Color
RAL 7035 (Light gray); optional RAL 9003 (Signal white).
Surface Treatment
Electrostatic powder coating with thickness 80~120μm, weather resistance ≥500h salt spray test.
Exterior Markings
Clear system nameplate, safety warning labels, operation instructions, and simplified electrical schematic diagram.
Observation Window
Explosion-proof glass window for easy visual inspection of internal status (standard on cabinet systems).
Indicator Lights
High-brightness LED status indicators (green/red/yellow) displaying operation, fault, and standby modes.
User Interface
7~10 inch color touchscreen HMI (optional) displaying real-time power, SOC, operation mode, etc.
Air Intake/Exhaust
Louvered protective design with insect screen and removable filter.
Lifting/Transport Interfaces
Standard corner castings for containers; fork pockets and lifting rings standard for cabinets.
Access for Maintenance
Front and rear double-door design for easy internal maintenance.
Design
|
Category |
Details |
|
Electrical Design |
High voltage architecture: 1000V~1500V DC bus voltage reduces system losses and cabling costs; cluster-level management: string PCS architecture allows independent control of each battery cluster, eliminating parallel circulating currents and increasing usable capacity; AC/DC integrated design: integrates conversion and step-up functions, enhancing system integration density; redundancy design: N+1 redundancy support for critical components (BMS power supply, communication, fans); insulation monitoring: 24/7 real-time monitoring of system insulation resistance to ground; active protection: hardware and software-based dual over current / over voltage protection with response time <20ms |
|
Thermal Management Design |
Liquid cooling system: optimized coolant flow path design ensures cell temperature difference ≤±1.5°C; immersion cooling: insulating flame-retardant coolant fully immerses battery modules for all-around contact heat dissipation, fundamentally eliminating thermal runaway risk; air cooling system: intelligent speed control fans and guided airflow ducts ensure uniform heat dissipation; heating system: automatic PTC heating activation in low-temperature environments ensures battery chargeability and dischargeability; condensation protection: built-in temperature and humidity sensors automatically activate dehumidification function |
|
Safety Design |
Three-level fire protection architecture: cell-level explosion-proof valve + module-level fusing + system-level aerosol fire suppression; thermal runaway detection: multi-parameter composite detection using CO/VOC/smoke/temperature sensors; explosion venting: explosion vent openings on top of the enclosure for directional pressure relief; electrical isolation: physical separation of high and low voltage areas ensures personnel safety; emergency stop: multiple emergency stop buttons distributed inside and outside the cabinet |
|
Structural Design |
Seismic design: meets seismic intensity level 8 requirements; passes GB/T 2423.43 vibration test; anti-corrosion design: stainless steel fasteners in key areas; anti-corrosion coating applied; impact protection: bottom anti-collision beams protect internal equipment; ingress protection: EPDM sealing gaskets for all joints; waterproof connectors for cable entry and exit points |
|
Intelligent Design |
EMS energy management: supports various strategies including peak shaving, demand management, and frequency regulation; cloud platform: real-time data upload; monitoring via mobile app or web interface; algorithm optimization: AI-based SOC/SOH estimation with accuracy ≤3%; predictive maintenance: early warning of potential faults based on operational data |
|
Category |
Details |
|
Electrical Design |
High voltage architecture: 1000V~1500V DC bus voltage reduces system losses and cabling costs; cluster-level management: string PCS architecture allows independent control of each battery cluster, eliminating parallel circulating currents and increasing usable capacity; AC/DC integrated design: integrates conversion and step-up functions, enhancing system integration density; redundancy design: N+1 redundancy support for critical components (BMS power supply, communication, fans); insulation monitoring: 24/7 real-time monitoring of system insulation resistance to ground; active protection: hardware and software-based dual over current/over voltage protection with response time <20ms |
OEM & Customization Services
We offer comprehensive OEM/ODM customization services covering the entire process from requirements analysis to delivery, meeting diverse customer and application needs.
Customization Scope:
|
Brand Customization |
Nameplate, logo, panel silk-screening per customer specifications |
|
Technical Parameter Customization |
Capacity, power, voltage level, C-rate designed per requirements |
|
Energy Storage Medium Customization |
Combinations of LFP, ultra-capacitors, hybrid ultra-capacitors |
|
Appearance Customization |
Color, logo, cabinet shape custom-designed |
|
Functional Customization |
Special operation modes, communication protocols, safety strategies |
|
Export Customization |
Compliance with target country standards (UL, CE, IEC, UN38.3, etc.) |
|
Integration Customization |
Integrated design with PV, EV chargers, diesel generators, etc. |
Customization Process:
|
Step |
Process |
Description |
|
1 |
Requirements Communication |
Technical team discusses application scenarios and performance requirements |
|
2 |
Solution Design |
Collaborative design across electrical, structural, thermal management, and safety disciplines |
|
3 |
Solution Review |
Customer reviews design proposal; simulation verification as needed |
|
4 |
Prototype Manufacturing |
Prototype built and performance tested as required |
|
5 |
Certification Support |
Assistance with target market certifications |
|
6 |
Mass Production |
Mature solutions delivered in bulk |
|
7 |
Full Lifecycle Services |
Installation guidance, O&M training, after-sales support |
Product Customization Options:
|
Customization Item |
Options |
Description |
|
System Capacity |
100kWh ~ 100MWh+ |
Precisely configured per project requirements |
|
Power/Energy Ratio |
0.25C ~ 4C |
Choose power-type or energy-type based on application |
|
Energy Storage Medium |
LFP/NMC/Ultra-capacitor/Hybrid Ultra-capacitor |
Combination of power-type and energy-type media |
|
Cell Brand |
Domestic premium/JV/Imported |
Choose based on reliability requirements |
|
Cycle Life |
6,000 / 8,000 / 12,000 cycles |
Long-life type increases initial cost but lowers LCOE |
|
PCS Configuration |
Centralized / String / Modular |
String PCS offers high efficiency and cluster-level independent control |
|
Cooling Method |
Air / Liquid / Immersion |
Immersion cooling offers highest safety and minimal temperature difference |
|
Fire Protection System |
Aerosol / Novec 1230 / Water Spray / Immersion |
Choose based on safety level requirements |
|
Ingress Protection |
IP54 / IP55 / IP65 |
Choose based on installation environment |
|
Corrosion Protection Level |
C3 / C4 / C5 |
Higher protection required for coastal/industrial areas |
|
Communication Protocol |
Modbus / IEC104 / IEC61850 |
Choose based on grid dispatch requirements |
|
Installation Method |
Outdoor ground / Indoor / Rooftop |
Choose based on site conditions |
|
Grid Connection Voltage |
400V / 690V / 10kV / 35kV |
Choose based on point of interconnection voltage level |
|
Container Size |
20 ft / 40 ft / Custom |
Choose based on capacity and transport conditions |
|
Color |
RAL series |
Match customer brand image |
|
Intelligent Monitoring |
On-site HMI / Cloud Platform / App |
Choose based on monitoring requirements |
|
Grid-Forming Capability |
With / Without |
Recommended for weak grid areas |
|
Backup Power |
Supports black start / seamless transfer |
Choose based on power supply reliability requirements |
|
Expansion Interfaces |
PV input / EV charger interface / Diesel generator interface |
For multi-energy complementary scenarios |
Manufacturing Process
Our manufacturing process strictly follows ISO9001 quality management system and IEC 62933 safety standards, ensuring each system is safe, reliable, and meets performance standards.
|
Step |
Process |
Description |
|
1 |
Requirements Analysis & Solution Design |
Customer requirements confirmation (application scenario, capacity, power, environmental conditions); system solution design (electrical topology, structural layout, thermal management); simulation verification (electric field/thermal field/structural strength) |
|
2 |
Raw Material Procurement & Inspection |
Cell procurement: Grade A selection, 100% inspection of capacity, internal resistance, self-discharge; component procurement: BMS, PCS, relays, cables from brand suppliers; incoming inspection: 100% performance verification for critical components |
|
3 |
Cell Sorting & Matching |
Voltage/internal resistance/capacity testing; matching standard: voltage difference ≤5mV, internal resistance difference ≤0.5mΩ; module assembly: laser welding or bolt connection |
|
4 |
Battery Module Assembly |
Cell insertion via automatic assembly line; weld inspection: X-ray or visual; module testing: capacity, internal resistance, insulation, dielectric strength |
|
5 |
Battery Cluster Integration |
Rack installation: battery modules installed; high-voltage connections: busbars/cables with torque control; BMS installation: slave BMS wiring harness connections |
|
6 |
System Integration |
PCS/transformer installation; fire protection system: detectors and suppression devices; thermal management: liquid cooling piping or air ducts; EMS and secondary wiring |
|
7 |
Complete System Commissioning & Testing |
Insulation resistance: ≥1MΩ; dielectric strength: AC 2500V/1min; BMS functional: voltage/temperature sampling, balancing; fire protection: detector response, suppression activation; charge/discharge test at rated power; communication test with EMS/cloud platform |
Factory Inspection & Delivery
|
Step |
Process |
Description |
|
8 |
Factory Inspection |
Visual inspection: no scratches, deformation, stains; functional re-verification: all functions normal; accompanying documents: certificate of conformity, test reports, manual, drawings |
|
9 |
Packaging |
Cleaning and drying with desiccant; protective wrapping: moisture-proof film; outer packaging: wooden crate or steel frame for cabinets; container loading for containerized models |
|
10 |
Shipping |
Order verification; preparation of packing list, bill of lading, export documentation; logistics transportation arrangement |
Quality Control
|
Category |
Details |
|
Incoming Inspection |
Cells: 100% capacity, internal resistance, self-discharge, appearance testing; BMS/PCS: functional and communication verification; cables/connectors: continuity and dielectric testing; structural parts: dimension, material, coating verification |
|
In-Process Inspection |
First article inspection for first unit of each batch; quality control points established for critical processes; weld inspection: X-ray sampling for laser welds, torque verification for bolted connections; cross-inspection where subsequent process verifies previous process |
|
Final Product Inspection |
Factory testing: 100% electrical safety, functional performance, communication, and fire protection integration; aging test: 72-hour operation for selected batches; type testing: third-party testing per IEC 62933 |
|
Quality Traceability |
Unique serial number for each system and module; critical component traceability: cell, BMS, PCS serial numbers recorded; process records electronically archived; MES system for full production traceability |
|
Quality System |
ISO9001:2015 certified; three-tier documentation: quality manual, procedures, work instructions; regular internal audits and management reviews |
|
Testing Equipment |
Battery test system; dielectric strength/insulation/grounding tester; environmental chamber; vibration table; BMS hardware-in-the-loop test platform; thermal imager |
|
Personnel Qualifications |
Certified inspectors; certified special operators (electricians, welders); regular training and skill assessment; quality awareness training for all personnel |
|
Environmental Control |
Assembly area cleanliness: Class 100,000; temperature and humidity: 25±3°C, ≤60% RH; electrostatic discharge (ESD) protection measures |
Product Certifications
|
Certification |
Certification Body |
Scope |
Standard Basis |
|
ISO9001:2015 |
Third-party Certification Body |
Quality Management System |
ISO 9001 |
|
ISO14001 |
Third-party Certification Body |
Environmental Management System |
ISO 14001 |
|
ISO45001 |
Third-party Certification Body |
Occupational Health & Safety Management System |
ISO 45001 |
|
IEC 62933-1 |
Third-party Certification Body |
Electrical Energy Storage Systems - Terminology |
IEC 62933-1 |
|
IEC 62933-2-1 |
Third-party Certification Body |
Electrical Energy Storage Systems - Unit Parameters & Testing Methods - General Specification |
IEC 62933-2-1 |
|
IEC 62933-5-2 |
Third-party Certification Body |
Electrical Energy Storage Systems - Safety Requirements for Grid-Integrated EES Systems - Electrochemical-Based Systems |
IEC 62933-5-2 |
|
UN38.3 |
Third-party Certification Body |
Transport Safety Testing |
UN Manual of Tests and Criteria |
|
CE |
Third-party Certification Body |
EU Market Access |
LVD/EMC Directives |
|
GB/T 36276 |
China Quality Certification Centre |
Lithium-ion Battery for Electrical Energy Storage |
GB/T 36276 |
|
GB/T 34131 |
China Quality Certification Centre |
BMS Technical Specification for Energy Storage |
GB/T 34131 |
|
NFPA 855 |
Third-party Certification Body |
Standard for the Installation of Stationary Energy Storage Systems |
NFPA 855 |
Packaging for Shipment
Maintenance
Applications
|
Category |
Details
|
|
Generation-Side |
Renewable energy farm storage: wind/solar PV storage for power smoothing and grid compliance; thermal power plant joint frequency regulation; hydro-PV-storage integrated operation |
|
Grid-Side |
Independent/shared energy storage stations: frequency regulation, peak shaving, reserve capacity; substation-side storage: defers T&D investment, improves reliability; black start power source for grid restoration |
|
Commercial & Industrial |
Peak shaving and valley filling via time-of-use tariffs; demand management to reduce peak demand charges; demand response participation; emergency backup power for critical loads |
|
Special Scenarios |
Mine storage: underground distribution with immersion-cooled ESS eliminating thermal runaway risk; data centers: backup power + peak shaving; EV charging stations: PV-storage-charging integrated stations; islands/remote areas: independent microgrid systems with diesel generators |
Payment Terms
Domestic Customers
T/T: 30% advance + 70% before shipment.
Bank acceptance draft: accepted within 6 months.
Warranty retention: 5~10% negotiable.
Commercial acceptance draft: for long-term cooperation customers.
International Customers
T/T: 30% advance + 70% against copy of B/L.
L/C at sight: irrevocable L/C issued by reputable bank.
Usance L/C: 60/90 days negotiable.
D/P: documents against payment.
Partner Support
|
Payment Terms |
Long-term partners: flexible payment terms negotiable; key projects: milestone payments negotiable; export projects: buyer financing cooperation available |
|
Guarantees |
Performance and advance payment guarantees available upon request |
Partnership Advantages
|
Partner Requirements |
Customer resources and sales channels in power/new energy industry; good business reputation and financial strength; professional technical service capability; alignment with company business philosophy; experience in energy storage or related products preferred |
|
Partner Support |
Territory protection: clear regional definitions; pricing support: competitive pricing for margin protection; technical support: training, solution design, on-site assistance; marketing support: materials, catalogs, trade shows, joint marketing; project protection: project registration system; training support: regular product, sales, and technical training |
|
Partnership Advantages |
Brand authorization: authorized dealer certificate; comprehensive product portfolio for all application scenarios; technology leadership: full-time-domain multi-medium technology, immersion-cooled safety; customization capability; quality assurance: IEC standards and international certifications; service network: national coverage; export support: assistance with certifications and customs clearance |
Partnership Process
|
1 |
Initial contact: understand products and partnership policy |
|
2 |
Qualification review: submit company information for assessment |
|
3 |
Factory visit: visit factory and reference projects |
|
4 |
Agreement signing: define rights, obligations, territory, performance targets |
|
5 |
Training support: product, commercial, and technical training |
|
6 |
Authorization: dealer certificate issued |
|
7 |
Market launch: joint market development planning |
FAQ
Q: What does cycle life refer to for energy storage systems?
A: Cycle life refers to the number of charge/discharge cycles a battery can complete before its capacity degrades to 80% of its initial capacity. Our LFP energy storage systems offer cycle life ≥6,000 cycles at 80% DOD.
Q: What are the advantages of immersion-cooled ESS?
A: Immersion-cooled ESS uses insulating flame-retardant coolant to fully immerse battery modules, offering three key advantages: (1) Fundamentally eliminates thermal runaway risk (oxygen isolation); (2) All-around contact heat dissipation with cell temperature difference ≤1.5°C; (3) System conversion efficiency ≥90%. Suitable for high-safety scenarios like mines, ultra-fast charging stations, and data centers.
Q: How to choose between Containerized ESS and Cabinet/Rack-Mounted ESS?
A: Choose based on application scenario: (1) For large-scale PV/wind farms and grid-side independent storage stations, choose Containerized ESS (MWh scale). (2) For commercial & industrial parks, charging stations, and factory sites, choose Cabinet/Rack-Mounted ESS (kWh to MWh scale) for modular design, small footprint, and flexible installation.
Q: What is the esGrid Multi-Technology ESS?
A: It is an innovative energy storage system developed by Sieyuan Qingneng featuring an integrated architecture combining lithium batteries, EDLC, and HUC. It optimally leverages the advantages of each energy storage medium to efficiently achieve full-time-domain frequency regulation (primary, secondary, tertiary), peak shaving, and ancillary service economic value.
Q: What are the grid interconnection standards for energy storage systems?
A: Main grid interconnection standards include: IEC 62933 series, UL 9540, and GB/T 36276. Our products can provide test reports complying with the relevant standards.
Q: Can the energy storage system be used in extremely cold regions?
A: Yes. Our energy storage systems operate in temperatures ranging from -30°C to +55°C (-40°C to +60°C optional). PTC heating activates automatically in low temperatures to ensure battery chargeability and dischargeability.
Q: How fast is the response time of the energy storage system?
A: Response time ≤50ms to rated power. Grid-forming ESS offers zero-latency response, meeting grid primary frequency regulation requirements.
Q: How is the safety of the energy storage system ensured?
A: Our systems use a three-level safety protection architecture: (1) Cell-level safety valve + isolation bracket to prevent thermal propagation; (2) Module-level fusing protection; (3) System-level aerosol fire suppression + water spray deluge + explosion venting. Immersion-cooled systems fundamentally eliminate thermal runaway risk. All systems pass UL 9540A thermal runaway propagation testing.
Q: What is the delivery lead time?
A: Standard products: 25-35 working days. Customized products: 45-60 working days after technical confirmation.
Q: Is on-site installation guidance provided?
A: Yes, we provide professional engineer on-site installation guidance. Technical personnel can be dispatched for installation, commissioning, and acceptance guidance as per contract.
Q: What is the product warranty period?
A: Standard warranty period is 5 years, extendable to 10-20 years. During the warranty period, defects caused by product quality will be repaired or replaced free of charge.
Q: Are spare parts available and for how long?
A: Yes, OEM spare parts are available for 10 years after product discontinuation.
Q: What are the main international standards for energy storage systems?
A: Main international standards include: IEC 62933 series (electrical energy storage systems), UL 9540 (safety), UL 1973 (battery safety), UN38.3 (transport safety), etc.
Q: Is training provided?
A: Yes, comprehensive training includes on-site training, centralized training, and video tutorials covering system principles, operating procedures, routine maintenance, and troubleshooting.
Q: What business models do energy storage systems support?
A: Multiple business models: (1) Peak-valley arbitrage; (2) Demand management; (3) Demand response; (4) Ancillary services (frequency regulation, peak shaving, reserves); (5) Capacity leasing; (6) Deferral of transmission/distribution investments.
Q: What is grid-forming energy storage?
A: Grid-forming energy storage is a voltage-source-type system capable of independently establishing a grid, supporting weak grid stability, and providing black start capability.
Note: The above information is prepared based on industry technical specifications such as IEC 62933 series and GB/T 36276. Specific product configurations and technical parameters are subject to actual order confirmation. We reserve the right to continuously improve products based on technological advancements without prior notice.
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