Essential Design Considerations for Commercial Energy Storage System PACKs
Introduction
The structural design of Commercial Energy Storage System (CESS) PACKs is pivotal for ensuring the safety, performance, cost-effectiveness, and adaptability of battery systems across various applications. At Xiamen Lefor Energy Storage Technology Co., Ltd., we specialize in creating solar batteries for commercial use that meet the highest standards of design and functionality. Here, we outline the key design principles that govern the development of our CESS PACKs.
Manufacturing Process and Assembly Design for CESS PACKs
In the fabrication of CESS PACKs, we adhere to design guidelines that consider manufacturing processes and assembly feasibility. Common manufacturing techniques include sheet metalworking, injection molding, casting, forging, and welding. Our designs take into account production equipment, batch manufacturability, shape, processing precision, heat treatment, and cost. Assembly feasibility is also a priority, ensuring that components and sub-assemblies are easy to install. We strive for a rational layout that simplifies the overall structure while maintaining reliability and safety, utilizing proven, mature structures wherever possible.
Structural Integrity Design for CESS PACKs
The life cycle of a CESS product includes manufacture, transport, commissioning and operation and maintenance. Each stage has its own set of assessments and corresponding structural strength design guidelines. We consider the safe and reliable handling of battery modules, packs and containers during production. For transport, we divide this into sea/air freight, road transport and short-distance field transport. Commissioning involves lifting and positioning of the equipment, and the capacity of the integrated CESS (prefabricated cabin) is scaled up from 1-2 MWh to 3-6 MWh. operation and maintenance require tailored designs to withstand harsh environments.
Environmental Adaptability Design for CESS Structures
Environmental adaptability design guidelines ensure that our products meet local usage environments and lifespan design criteria. Structural components are exposed to rain, snow, salt fog, and more. We reference standard guidelines for corrosion resistance and sealing protection, with salt fog test requirements ranging from 96 hours to 720 hours depending on conditions. Outdoor operational environments demand that our CESS structures meet certain IP class design criteria, with a minimum of IP54 for general systems and IP55 for high dust, high salt fog areas. Special environmental needs, such as windblown sand and high-altitude low-pressure thermal design, are also considered.
Safety Protection Design for CESS Structures
Safety protection is crucial for CESS systems, which face complex and variable external environments, including sandstorms, falling rocks, hail, and internal challenges like electromagnetic interference and temperature shocks. Our safety design considerations ensure that our products can effectively prevent internal or external impacts and minimize structural failure risks to the system or personnel, especially in cases of cell aging or failure.
Thermal Protection Design Guidelines for CESS Structures
Our CESS cabinets are equipped with automatic fire extinguishing systems and gas and smoke detection devices for rapid response to fires. We prefer environmentally friendly fire-fighting agents like HFC-227ea (Heptafluoropropane) or Novec 1230 (FM200). Thermal management measures, such as liquid cooling or air cooling, ensure cell temperature differences do not exceed 5°C (10°C for air-cooled systems) under 0.5C charge-discharge cycle tests at 25°C. Our cabinets are designed to operate normally at working temperatures from -20°C to +50°C, altitudes up to 2000m, and relative humidity up to 95%. We comply with the temperature rise limits set by GB/T 36545 and implement multi-level overcurrent protection to quickly and accurately cut off abnormal circuit currents. Proactive fire suppression systems are in place to reduce system losses during cell valve opening or thermal runaway.
About Xiamen Lefor Energy Storage Technology Co., Ltd.
Xiamen Lefor Energy Storage Technology Co., Ltd. is a leading manufacturer of LiFePO4 batteries, specializing in commercial solar battery storage and home battery storage solutions. We are committed to providing cutting-edge energy storage systems that are not only efficient and reliable but also environmentally friendly. Our expertise in the field of solar batteries for commercial use positions us as a trusted partner for businesses seeking to transition to sustainable energy solutions.
By integrating these design principles into our CESS PACKs, we at Xiamen Lefor Energy Storage Technology Co., Ltd. are dedicated to delivering commercial energy storage systems that meet the evolving needs of the global market.