Content source: ESPlaza long-term energy storage network Achieving carbon peak carbon neutrality and striving to build a clean, low-carbon, safe and efficient energy system are major decisions and arrangements made by the Party Central Committee and the State Council. New energy storage is an important support to help achieve the "double carbon" goal, an important means to ensure the security of energy supply, a key element in building a new power system, and an important direction for cultivating strategic emerging industries, with broad development prospects. This article aims to analyze and compare the technical characteristics and application scenarios of the main technical routes of new energy storage, and on this basis, forecast the future development trend of new energy storage. 1 Overview of new energy storage development The development history of energy storage technology can be traced back to the early 19th century, when people began to explore methods of converting electrical energy into chemical energy, thermal energy and other forms for storage. It was not until the early 20th century that electrochemical energy storage technology represented by lead-acid batteries began to become popular, providing a reliable means for energy storage and utilization. With the advancement of science and technology and the application of new materials, energy storage technology has been constantly innovated and improved. New electrochemical energy storage technology represented by lithium-ion batteries has emerged. Its advantages such as high energy density, long life, environmental protection and no pollution have been favored by It has been widely recognized and has become the current mainstream energy storage technology. Although the scale of new energy storage installed capacity is growing rapidly, the development of new energy storage still faces problems such as high costs, lack of a price mechanism, imperfect standards and regulations, and difficulty in project implementation. 2 Main technical routes for new energy storage New energy storage mainly includes three major technical paths: electricity storage (electrochemical energy storage, mechanical energy storage, and electromagnetic energy storage), hydrogen storage, and heat storage. Compared with pumped hydro energy storage, new energy storage has the advantages of short construction period, simple and flexible site selection, and strong adjustment capabilities. It is better matched with new energy development and consumption, and its advantages are gradually becoming more and more prominent. 2.1 Electricity storage Electricity storage can be divided into three categories: electrochemical energy storage, mechanical energy storage and electromagnetic energy storage. Electrochemical energy storage mainly includes lithium-ion batteries, flow batteries, lead-acid batteries and sodium-ion batteries; mechanical energy storage mainly includes compressed air energy storage, flywheel energy storage ...

     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...