Blogs

The abstract summarizes that rational battery capacity design is critical for the reliability, stability and economy of DC power supply systems (e.g., photovoltaic, emergency backup, industrial energy storage). It outlines the paper’s content: defining battery capacity, analyzing key influencing factors, detailing design steps (parameter determination, formula derivation, series-parallel adjustment), verifying through photovoltaic system engineering examples, and putting forward design notes and optimization suggestions to provide reference for designers, with a mention of future optimization adapting to new battery technologies. Read More

This article corrects the misconception in PV operation and maintenance that junction box overheating equals false soldering. Actual overheating mostly stems from increased contact resistance, faulty bypass diodes or cable issues, aggravated by high current. Heating patterns vary with string current and component quality, while infrared detection performance depends on distance and resolution. A simplified on-site troubleshooting method is also provided. Read More

This paper focuses on the overall structural design and mainstream installation methods of photovoltaic supports. It points out that the selection of support installation methods should integrate factors such as roof type, load-bearing capacity, regional climate and project scale, and comprehensively analyzes four mainstream installation methods (on-site pouring of cement piers on concrete roofs, precast cement brick counterweight, steel structure connection, special installation for color steel tile roofs) in terms of their structural characteristics, advantages, disadvantages and applicable scenarios. Finally, it puts forward selection suggestions and concludes that rational selection and standardized construction of installation methods are crucial to the stable operation and investment benefits of photovoltaic power stations. Read More

In hardware system design, brackets are core load-bearing components, and their material selection directly affects the system’s stability, service life, safety, and overall cost. This article first clarifies the core principles for selecting bracket materials, then conducts in-depth analysis and selection evaluation on four commonly used materials (cast iron, angle iron, galvanized angle steel, and aluminum alloy), elaborates on their characteristics, advantages, disadvantages, and applicable scenarios, and further puts forward the practical process and precautions for material selection. The research shows that cast iron and angle iron are not suitable for long-term use due to performance defects, while galvanized angle steel is preferred for medium-heavy load and outdoor scenarios, and aluminum alloy is ideal for light-load and high-requirement scenarios. This article provides technical reference for engineering designers to select bracket materials scientifically and reasonably. Read More

The battery pack is the core energy storage unit of photovoltaic power stations, whose operating status directly affects the stability, reliability and service life of the power station. Due to the complex operating environment and long-term charge-discharge cycle, the battery pack is prone to performance degradation and faults. This article combines the operating characteristics of battery packs in photovoltaic power stations and industry operation and maintenance standards, systematically elaborates on the key maintenance and management measures from six aspects: basic environmental and installation maintenance, daily and regular inspections, safety management, operation status control, fault handling and replacement specifications, and concludes with the importance of establishing a scientific maintenance system. It provides technical reference for the efficient, safe and long-term operation of battery packs in photovoltaic power stations. Read More

This article focuses on the daily inspection and maintenance of storage batteries (battery banks), adhering to the principle of "prevention first, combination of prevention and treatment". It elaborates on the core specifications and key points of environmental maintenance, safety protection, daily patrol inspection, operation parameter monitoring, maintenance taboos and special maintenance, aiming to ensure the reliable operation of storage batteries, extend their service life, and provide professional guidance for on-site maintenance work. Read More