Mr. Li, who lives in Fujian, wants to install a set of photovoltaic power stations in his home, and wants to realize that electricity does not cost money, but can also generate electricity to make money, should be happy, but let him worry, why is this? It turns out that the neighbors come over every three and a half times to pass on the information: photovoltaic modules have light pollution, which will affect the surrounding neighbors.      Later, Mr. Li found a local industry expert and got a professional answer, only to know that the truth is not like the neighbors said. So, is there light pollution in the photovoltaic module? Will it affect People's Daily lives? 01 Light pollution      Light pollution is a new environmental pollution source after waste gas, waste water, waste residue and noise pollution, which mainly includes white pollution, artificial day pollution and color pollution. In daily life, people's common light pollution is mostly caused by the vertigo of pedestrians and drivers caused by the reflection of mirror buildings, and the discomfort caused by unreasonable lighting at night. 02 Glare      Glare refers to a visual condition that causes visual discomfort and reduces the visibility of objects due to inappropriate brightness distribution or extreme brightness contrast in space or time in the field of view. Glare can be divided into direct glare and reflected glare, and reflected glare is directly related to the reflectivity of the target object. 03 Comparison of reflectance of solar photovoltaic  modules with that of common surface objects      Photovoltaic module is the core equipment for photoelectric conversion in the process of solar photovoltaic power generation. In order to improve the conversion efficiency, the surface of the glass cover plate used in the production process of the module is generally suede-treated and coated with anti-reflection film, and the surface of the silicon is textured and anti-reflection film, which has achieved the increase of the transmission rate of the glass cover plate and the absorption rate of the crystalline silicon. The surface of the photovoltaic module is tempered glass, the surface is not mirror, there will be only slight diffuse reflection, and there is no light pollution.      In fact, the visible light reflection coefficient of ordinary tempered glass is 9% to 11%, which will not cause light pollution, and the BIPV component uses the same type of glass as the building, which will not cause light pollution. The source of light pollution is visible light, and the internal power generation unit battery of the BIPV module will absorb visible light and convert it into electricity, which will further reduce the reflection of visible light. So photovoltaic power generation system is no light pollution.

For photovoltaic power stations, every additional kilowatt hour of electricity generated means more revenue per kilowatt hour of electricity. Many people believe that photovoltaic power stations of the same size should have the same power generation capacity. In fact, there are many determining factors. Lighting and environmental impact in the area Photovoltaic power stations rely on solar radiation to generate electricity. The greater the intensity of solar radiation, the higher the power generation capacity of the photovoltaic power station. Data show that more than 2/3 of the regions in my country have more than 2,000 hours of sunshine per year and are rich in solar energy resources. Depending on the latitude and the amount of solar radiation, the power generation capacity of the photovoltaic power station is determined. In addition to differences in solar energy resources, the humidity and temperature in various regions will affect the power generation of photovoltaic power stations. In particular, particulate matter in air pollution, also known as smog, can reduce photovoltaic power generation efficiency by more than 17%. According to calculations, in hazy cities, the power generation of photovoltaic power stations is obviously low. And when the haze is severe, photovoltaic power stations cannot even generate electricity. Quality factors of photovoltaic power plants Environmental problems are difficult to change, but a high-quality photovoltaic power station will definitely generate more electricity than a low-quality power station. Various devices, from silicon materials to components, and from components to inverters, all play a decisive role in power generation. Photovoltaic module quality As the core component of a photovoltaic power station, the quality of photovoltaic modules plays a decisive role in the power generation capacity of the power station. The quality of photovoltaic modules is ultimately linked to their service life and efficiency. First of all, the photoelectric conversion efficiency of photovoltaic modules represents the power generation capacity of the module, so the higher the efficiency of the module, the higher the power generation capacity of the power station. In addition to efficiency, the quality of photovoltaic modules is more reflected in various aspects such as anti-attenuation and anti-aging. Inferior photovoltaic modules are prone to problems such as cracks and backplane aging. Once such problems occur, the efficiency of the photovoltaic modules will drop significantly, resulting in low power generation of the power station. What's more, it is also very important that many power station users do not understand the operating principles of photovoltaic power stations and use them as boards to dry things, such as quilts, shoes, dried food, and peppers... This will block the components and affect the conversion of solar energy into current. If it is small, it will reduce the income of power generation; if it is ...

Original high-tech lithium battery Market data shows that from January to February 2024, among China's power battery exports, the export volume of lithium iron phosphate batteries reached 7.5GWh, accounting for 45%. Among them, in January, the export proportion of LiFePO4 batteries reached 50.5%. Compared with the data in 2023, China's lithium iron phosphate battery exports accounted for 30% overall, and the export proportion of lithium iron phosphate batteries in 2024 has increased significantly. Behind this is the result of Chinese battery manufacturers’ continued breakthroughs in overseas markets. What can also be verified by data is that according to the ranking of power battery market share in non-China regions in January 2024 released by the Korean Statistics Agency, CATL continues to maintain its leading position with a market share of 5.7GWh. BYD, which focuses on lithium iron phosphate battery products, has experienced significant growth. Its power battery shipments in overseas markets have increased from 0.3GWh in January 2023 to 1.2GWh in January 2024, a year-on-year increase 261.7%. In recent years, driven by the innovation of domestic battery companies' material systems and structural systems, lithium iron phosphate battery technology has always been the advantage of domestic battery companies. The success of lithium iron phosphate batteries in the domestic new energy market, especially in terms of cost structure, has driven electric vehicles to have "the same price of oil and electricity" or even "lower electricity than oil", making China's lithium iron phosphate technology move from domestic to overseas and gradually change International car companies and battery manufacturers have stereotypes about lithium iron phosphate batteries. In recent years, car companies such as Tesla, Volkswagen, General Motors, Ford, and Northvolt have been increasing the installed capacity of lithium iron phosphate batteries. Traditional international ternary battery giants Samsung SDI, LGES, and SK On have also successively announced the addition of lithium iron phosphate batteries. Plan for battery production line. Among them, LGES recently signed an order for 160,000 tons of lithium iron phosphate cathode materials with Longpan Technology. The emergence of China's first overseas large order for lithium iron phosphate cathode materials marks the official expansion of China's lithium iron phosphate material supply system overseas. From the perspective of market demand, the domestic market structure has formed a market pattern of 30% to 70% for ternary and iron-lithium, and the international market is also accelerating the shift from ternary to iron-lithium. According to the time when overseas lithium iron phosphate batteries are put into production, the battery factory jointly owned by Ford and CATL, South Korea's three major battery companies LGES, SK On, and Samsung SDI will mostly produce lithium iron phosphate batteries in 2026 or even later. As ov...

When doing household photovoltaic system promotion, people often ask, does the electricity generated by photovoltaic need to be stored? How do you use electricity at night? To understand these problems, we need to understand the concepts of on-grid system and off-grid system. 1. Grid-connected system. The grid-connected system requires the photovoltaic system to be connected to the power grid, and the grid-connected system can be divided into "self-use, surplus electricity online" mode and "full Internet access" mode. Residential grid-connected power generation system is the installation of solar modules on the roof of residents, the system is connected to the grid, and the power supply task is shared. In the case that the amount of sunlight radiation reaches the power generation requirements, the inverter in the system converts the direct current generated by the photovoltaic power generation system into alternating current, which directly supplies power to the residential household load, and the insufficient part is supplemented by the municipal power supply, and the photovoltaic power generation is greater than the residential household electricity consumption, the remaining power is incorporated into the grid. This is the so-called "spontaneous self-use, surplus electricity online" mode. Users can also choose to directly integrate all the power generated by the photovoltaic system into the grid. All the electricity needed for household load is supplied directly by the grid. This is the "full access" model. Characteristics of grid-connected system: 1) Connect to the power grid, and upload part or all of the electricity to the power grid. 2) Power grid outage, photovoltaic power generation also stopped. Because the inverter has anti-island, that is, the power grid company requires: power grid power failure, photovoltaic power must also be immediately cut off. The main concern is safety. 3) Residents still rely on mains electricity at night. 4) No energy storage device. Therefore, the grid-connected power generation system needs to rely on the grid, and the generated energy is transmitted to the grid, which does not need to be stored. At night, we still rely on the grid, on the mains. 2. Off-grid system. Principle and composition of off-grid system. The working principle of the off-grid power generation system is very similar to that of the grid-connected power generation system, except that the power of the off-grid system is not transmitted to the public grid and is directly consumed by the load. Taking into account the volatility of photovoltaic power generation, such as power generation during the day and no power generation at night, good sunny day power generation less or no power generation in rainy weather, residents off-grid power generation system needs to be equipped with batteries (groups). The off-grid solar power generation system consists of photovoltaic modules, controllers, inverters and batteries (groups). Through the understan...

New energy + new agriculture, one represents the future of green transformation and development, and the other represents the foundation of the national economy and people's livelihood. Photovoltaics have given new vitality to the most traditional agriculture. Photovoltaic agriculture refers to a business model in which agricultural management facilities (or units) are scientifically designed and rationally grafted with photovoltaics in order to achieve multiple uses in one land and increase unit land output during the practice of agricultural production. During the design, construction and operation of photovoltaic power stations, space necessary for agricultural planting and breeding should be reserved to ensure that while the photovoltaic power station generates electricity normally, it can meet the physiological needs of plants and animals, achieve the effects and benefits of agricultural and photovoltaic complementation, and achieve the integration and innovation of ecological agriculture and circular agriculture technology models provide strong technical support for sustainable agricultural development. "Photovoltaic + agriculture" is an emerging form of agriculture. It not only solves the problem of power supply required for water extraction and irrigation machinery, avoids the competition between the photovoltaic industry and agriculture for land, but also sells the excess electricity to the national grid. At present, there are four main modes of photovoltaic agriculture, namely photovoltaic planting, photovoltaic breeding, photovoltaic water conservancy, and photovoltaic cottages, which are divided into mushroom photovoltaic, fishery and photovoltaic complementary, vegetable (fruit) photovoltaic, livestock and poultry (pastoral) photovoltaic, Linguang, medicinal photovoltaics, ecological photovoltaics, water conservancy photovoltaics, etc.In the current wave of rapid development of the  photovoltaic industry, photovoltaic agriculture plays an important role and has broad development prospects. 1. Photovoltaic + Vegetable/Fruits Organically combine rooftop photovoltaic power generation with agricultural planting under the shed to drive the transformation and upgrading of the agricultural industry. In terms of crops, aerospace vegetables or shade-loving plants can be grown. This type of  project can also do some tourism agriculture.   2.Photovoltaic + Breeding industry Photovoltaic plus breeding industry can be used for free-range breeding or breeding sheds. It can breed sheep, pigs, chickens, dairy cattle, beef cattle, rabbits, etc. Most of them are herbivorous animals.   3.Photovoltaic + Fishery Utilizing the vast area of the fish pond, solar panels are installed on it to generate electricity. The photovoltaic modules are arranged three-dimensionally above the water surface, and aquaculture is carried out below.It is dual-purpose in one place, and the profit is significantly higher than that of pure aquaculture.At pre...

1. Basic introduction to energy storage systems Battery Energy Storage System (BESS) mainly consists of energy storage batteries, power conversion system (PCS), battery management system (BMS), and energy management system (EMS). Partially composed (as shown in Figure 1). A complete energy storage system BMS should include a plug-in BMS, a battery cluster BMS, and a system BMS. Especially for large-scale energy storage systems, a three-level BMS can avoid voltage imbalance and resulting overcharge or overdischarge to the greatest extent. According to the different levels of PCS, power frequency boost PCS can be divided into single-stage and double-stage. Among them, single-stage PCS is divided into two-level, three-level and multi-level according to the output level. The more levels, the higher the output power quality. The overall architecture of EMS can be divided into support platform and application software. The support platform mainly includes measurement terminals, transmission channels, computers, databases, etc. The application software includes data collection and monitoring, energy management, and network analysis (the energy storage system control structure is shown in Figure 2). 2. Classification of common energy storage system inverters Currently common energy storage inverters can be divided into centralized, distributed, and string types. 2.1) Centralized energy storage inverter solution (see Figure 3) The centralized energy storage inverter solution is mainly used in large-scale ground power stations. The topology diagram from right to left is: high-voltage switch cabinet-transformer-2* energy storage converter-2* bus cabinet-battery cluster. After converging from the DC side, the inverter is centralized. The system topology adopts DC-AC one-level full-bridge inverter. 2.2) Distributed inverter solution (see Figure 4) Figure 4 shows the topology diagram of the distributed energy storage inverter: transformer-string inverter-16*battery cluster (maximum). The converging cabinet is omitted, and the AC side is converging after the DC side inversion is completed. Adopt DC-AC one-level conversion. Figure 5 is the topology diagram of the distributed inverter. The main difference from Figure 4 is the design of the breakpoint. Figure 5 is the DC side isolation switch + fuse solution, and Figure 4 is the AC side circuit breaker solution. The disadvantage in Figure 5 is that the inverter fails and the upper-level switch needs to be disconnected. The advantage is that the DC side has short-circuit protection. The solution in Figure 4 can disconnect the AC side and maintain a single module. The AC side switch is outside the PCS module and the wiring is complicated. Comparison between centralized and distributed inverters 2.3) String inverter solution (see Figure 6) Not only does it manage one cluster per cluster, it also installs an optimizer on the battery PACK to implement energy management down to the battery module level. The available ca...

2024 Pearl River Delta Energy Storage Annual Conference In order to promote everyone's understanding of the energy storage industry(solar energy battery) and promote the energy storage market, the three-day (2024 Pearl River Delta Optical Storage Annual Conference) was held in Shenzhen, Guangdong. The annual conference adheres to the concept of "parallel energy storage, resource sharing, and joint progress." The idea is to promote understanding of energy storage(solar system) in various regions. Our company leaders such as Kevin and Avery to attend the meeting to learn more relevant knowledge. The following items were conducted at the meeting: 1. Briefly introduce the meeting process; 2. Introduce the electricity consumption situation in each province; 3. Free communication and learning; 4. Watch on-site solar products; 5. Lucky Draw. At the end of the meeting, it was advocated that everybody work together to develop more energy storage systems, bring convenience to more people, and add glory to the new energy industry.

In a groundbreaking development at the forefront of renewable energy and aerial technology, leading companies in the portable power station and drone sectors have joined forces to create a revolutionary solution that promises to redefine the possibilities of unmanned aerial systems. This innovative collaboration aims to integrate portable power stations with drones, enabling extended flight times and enhanced operational capabilities. By harnessing the power of renewable energy, these drones can operate for significantly longer durations, opening up a myriad of applications across various industries. Portable power stations, equipped with advanced lithium-ion batteries and efficient solar panels, serve as the backbone of this pioneering concept. These compact yet powerful units can generate and store ample energy, providing a sustainable source of power for drones to tap into while in flight. The integration of portable power stations with drones offers several key advantages: Extended Flight Time: By tapping into the renewable energy provided by portable power stations, drones can significantly extend their flight times compared to traditional battery-powered systems. This capability is invaluable for tasks that require prolonged aerial surveillance, monitoring, or data collection. Versatility: The versatility of portable power stations allows drones to operate in remote or off-grid locations where access to conventional power sources may be limited or non-existent. This opens up new opportunities for applications such as environmental monitoring, disaster response, and infrastructure inspection. Reduced Environmental Impact: Leveraging renewable energy sources reduces the carbon footprint of drone operations, making them more environmentally friendly. This aligns with the growing demand for sustainable solutions across industries and underscores the commitment to mitigating climate change. Enhanced Reliability: With access to a continuous power supply from portable stations, drones can operate more reliably without the need for frequent battery swaps or recharging. This increases operational efficiency and minimizes downtime, ultimately improving productivity and cost-effectiveness. The implications of this collaborative effort are vast, spanning industries such as agriculture, construction, public safety, and environmental conservation. From conducting precision agriculture and monitoring wildlife habitats to inspecting critical infrastructure and assisting in search and rescue missions, the applications of these integrated systems are virtually limitless. As the demand for advanced drone capabilities continues to grow, the integration of portable power stations represents a significant leap forward in unlocking the full potential of unmanned aerial systems. With a focus on sustainability, efficiency, and innovation, this collaboration sets a new standard for the future of aerial technology.

Content source: China Energy Storage Network PV-Tech 3060 In-depth analysis of household energy storage market demand Household energy storage is an integral part of the household power system under the energy revolution. The advantages of household energy storage systems include providing backup power to cope with grid outages, balancing energy supply and demand, improving self-sufficiency and reducing electricity bills. Stimulated by multiple factors, the demand for household energy storage continues to be strong, and the global market is blooming in many places. The following will briefly analyze the household storage demand in regional markets such as Europe, the United States, Australia, South Africa, and Southeast Asia. Global: Europe’s destocking growth slows down, while emerging markets take over and grow rapidly From the perspective of the global market, the global household storage market will have 15.6GWh of newly installed capacity in 2022, a year-on-year increase of 136.4%, more than doubling growth, and is expected to maintain a sustained rapid growth trend in the medium term. As the global energy transformation strategy continues to advance, there is a time and space mismatch between power supply and demand. The aging of the power grid, local conflicts, extreme weather and other problems have intensified the contradiction, driving the demand for household energy storage to increase. At the same time, governments of various countries have provided strong support for household energy storage, which has improved the economics of household energy storage. It is expected that global household energy storage installed capacity, with Europe and the United States as the main markets, will continue to maintain an upward trend. Due to the superposition of multiple factors, household energy storage has become one of the most promising incremental markets. Rising electricity prices: Due to the maturity of energy storage technology and falling costs, energy storage will begin to grow rapidly in 2021. In 2022, due to the year-by-year increase in energy costs and electricity prices in Europe, coupled with the Russian-Ukrainian war and large-scale overseas power outages, residential electricity costs will be high + power supply will be stable Poor performance has led to high growth in household photovoltaics, which in turn has led to an unexpected explosion in the household energy storage market. Increased policy support: Tax exemptions and financial subsidies provide policy support. As residents’ electricity prices continue to rise, the economics of household savings have improved. Countries around the world have launched relevant policies to encourage household energy storage installations. Relevant policies can be divided into indirect tax exemptions and direct financial subsidies, thereby reducing household storage installation costs; with the further implementation of policies led by carbon neutrality and energy independence goals, energy sto...

One Choice, ALL Solved! is our service concept and our commitment to our customers. In terms of the product itself, among the many manufacturers in Xiamen, we are the only one that can provide a complete set of solar products. Our products include brackets, solar panels, inverters, energy storage batteries and software development, each type The products are equipped with independent production lines and strong technical departments. Can comprehensively meet customer needs. Provide solutions to different kinds of customers. So, in addition to solar products, what additional services can we provide our customers? Entrusted by a customer, we need help finding electrical appliance related factories. Although not related to the solar industry. Based on our many years of experience, we screen our customers in advance for high-quality factories that meet their requirements, greatly improving their work efficiency. Our company philosophy is to strive to develop the cooperative relationship into a relationship of friends, establish long-term friendly cooperation, and achieve mutual benefit and win-win results for both parties. This is just a very simple example. When working with us, as long as your request is reasonable, we will never say "No" to our customers.