What is lithium battery cell capacity classification? what's the effect? What is the composition of lithium batteries? What is the role of the chemical composition of lithium batteries? As the power source of future electric vehicles and energy storage, lithium batteries need to be formed and divided into cells during the production process to ensure the quality and quality of the final power supply product. 1. What is formation and classification The lithium battery has no power when assembly is completed and must be charged to activate. The first charge is called 'formation' and is used to activate the active materials in the battery body. Formation, also called 'activation', is a very complex process, and it is also an important process that affects battery performance, because during the first charging process of the battery, it is inevitable to form at the interface between the carbon negative electrode and the electrolyte. The thin passivation layer covering the surface of the carbon electrode is called the solid electrolyte interface film or SEI film. The capacity of the battery is determined by charging and discharging the battery and detecting the discharge capacity when the capacity is fully charged. Only batteries whose tested capacity meets or exceeds the design capacity are qualified. This process of selecting qualified batteries through capacity testing is called capacity classification. 2. The role of formation and  classification The formation, volume fractionation and detection system are the most critical links in the back-end process. The chemical composition of lithium battery cells is achieved by charging and discharging to activate the active material of the battery cells, which is an energy conversion process. The composition and capacity principle of lithium battery cells is relatively complex, but it is also an important process that affects battery performance. The power connector serves as a connection switch between the battery and the outside and also affects the performance of the battery. High-quality battery terminals allow lithium batteries to be used effectively. Formation is just a charging process, and there is no need to discharge the battery core. Therefore, a separate charger can be used during formation, so the charger is often called a forming machine or a forming cabinet. Although formation does not require discharge, the formation process of some cells requires more than one charge. The capacity dividing process immediately after formation requires charging and then discharging the cells. After formation and charging, the cells must also be discharged. This technological need has also led many battery manufacturers to directly use charge and discharge machines with charging and discharging functions for formation.

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Warmly celebrate the successful conclusion of Solar& Storage Live Africa 2024. Thank you to all the customers who spoke to SWT-POWER and thank you for taking the time to stop by our booth. See you next year at Solar& Storage Live Africa.

Photovoltaic elderly care is a new type of elderly care model. "People's Daily" has long recommended the "photovoltaic elderly care" model. This report published in December 2015 described it this way: "Most people in the village invest in rooftop power stations with For elderly care, rooftop power stations have low investment, low risk, and stable income." Village Party Secretary Jiang Hongliang pointed out the reason in one sentence. In fact, the construction of household photovoltaic power stations can be regarded as an investment behavior, with a rate of return of more than 10%! Nowadays, the country is vigorously supporting distributed photovoltaics. Most areas in our country can pay back their costs in a few years. Areas with strong local subsidies will have even shorter time to pay back their costs. The remaining ten years of power generation income will be a steady collection of money. What are the benefits of photovoltaic elderly care? Utilizing idle resources, the elderly do not need to work Home distributed use uses the idle roof resources of the home to install photovoltaic power stations to convert solar energy into electrical energy. As long as it is installed and connected to the grid, you can immediately gain income and enjoy national and local photovoltaic subsidies. It can be said that by lying on the roof and basking in the sun, photovoltaic modules can generate real income every day. With this small vault on the roof, parents no longer have to go to the fields to farm, they can easily reap the benefits of sunlight and retire at home with peace of mind!   Small investment and high returns In most areas of my country, the payback time is 6 to 8 years. In areas with strong local subsidies, the cost can be recovered in less than 5 years, and the income from power generation in the remaining ten years will be collected steadily! Warm in winter and cool in summer to save electricity bills Actual cases show that household photovoltaic power stations on the roof have a certain thermal insulation effect. In summer, the indoor temperature of a photovoltaic roof can be reduced by 3 to 5 degrees. While the indoor temperature is controlled, the energy consumption of the air conditioner can also be significantly reduced!   Not subject to geographical restrictions on resource distribution Solar photovoltaics are not restricted by the geographical distribution of resources. As long as there is sunshine, you can install a home photovoltaic power station. It has a wide range of uses in China and is suitable for various areas in my country, especially remote areas without electricity and areas with complex terrain. It can solve the problem of empty-nest elderly care in most areas of my country.It is precisely because of these advantages that photovoltaic power plants are currently widely promoted in rural areas and have become a new choice for elderly people in rural areas.