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  • Classification of inverters based on wave type (Modified Sine wave)

    Classification of inverters based on wave type (Modified Sine wave)

    Aug , 29 2022
    Modified sine wave inverter The output waveform of the modified sine wave (or corrected sine wave, quasi sine wave, analog sine wave, etc.) inverter has a time interval from the maximum positive value to the maximum negative value, which improves its use effect. However, the corrected sine wave is still composed of dotted lines and belongs to the category of square waves, with poor continuity and ...
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  • Fourier Analysis of input current of Single phase controlled bridge rectifier

    Fourier Analysis of input current of Single phase controlled bridge rectifier

    Aug , 29 2022
    While the use of uncontrolled rectifier circuits remains prominent, for some applications, more control and efficiency is necessary. This can be accomplished through the use of a controlled rectifier circuit in which thyristors connected in a full-bridge configuration adjust the average voltage. Each thyristor has a gate that controls when it turns on. With control circuitry these devices can be o...
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  • SEI film formation mechanism

    SEI film formation mechanism

    Sep , 05 2022
    During the formation of the SEI film, various reduction reactions are carried out by the electrolyte solvent, lithium salt, additives, and trace air impurities. This series of reactions is not only affected by the inherent properties of substances such as reduction potential, reduction activation energy, and exchange current density, but also by other factors such as temperature, electrolyte salt ...
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  • Effect of electrolyte on SEI film

    Effect of electrolyte on SEI film

    Sep , 05 2022
    The electrolyte is the main source of the reduction reaction reactants for the formation of the SEI film , and both the electrolyte solvent and the lithium salt will affect the composition of the SEI film. When the main components of the electrolyte are basically fixed, the performance of the SEI membrane can only be improved by other means. The researchers found that the formation of the SEI film...
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  • Influence of SEI film on the performance of Li-ion battery

    Influence of SEI film on the performance of Li-ion battery

    Sep , 05 2022
    After extensive research, it has been found that the properties of SEI films greatly affect the performance of Li-ion batteries. During the formation process, the amount of the SEI film formed represents the amount of lithium in the consumed lithium-ion battery, which directly determines the capacity of the lithium- ion battery. Therefore, in the process of forming the SEI film, the less lithium i...
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  • Overview of the lithium battery formation process

    Overview of the lithium battery formation process

    Sep , 05 2022
    Lithium- ion battery formation process includes constant current, constant voltage and intelligent charging. The polarization phenomenon of constant current charging is serious, and its initial current is low, the current at the end of charging is high, the charging time is long, the energy waste is serious, and the battery life will be reduced. During constant voltage charging, the current is rel...
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  • Advantages and disadvantages of lithium iron phosphate battery and ternary lithium battery

    Advantages and disadvantages of lithium iron phosphate battery and ternary lithium battery

    Sep , 05 2022
    1. Energy density: The energy density of ternary lithium is about 1.7 times that of lithium iron phosphate, so the volume and weight of ternary lithium batteries will be smaller than those of lithium iron phosphate batteries, and the car load will be smaller. 2. Safety performance: lithium iron phosphate battery will perform better in acupuncture test, and in high temperature environment, the stab...
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  • Effect of formation current density on battery performance

    Effect of formation current density on battery performance

    Sep , 13 2022
    When graphite is used as the negative electrode active material, there are two types of reactions for the formation of SEI films: two-electron reactions, that is, two electrons participate in the reaction at the same time, and it is easier to generate inorganic lithium salt components; single-electron reactions, that is, only need A reaction that can take place when one electron participates, it i...
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  • Things to keep in mind when installing UPS

    Things to keep in mind when installing UPS

    Sep , 19 2022
    During the installation of a UPS system we need to be careful about some certain factors which can hamper our entire operation and threat the reliability of the system. In this series of technical article we are going to explain 12 major problems that need to be paid attention to when installing a UPS system.  In this article we are going to explain second 6 of the major problems: 7. Use envi...
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  • How a UPS system works with a Generator

    How a UPS system works with a Generator

    Sep , 19 2022
    As weather extremes and storms increase, power outages are likely to continue to rise. According to the U.S. Energy Information Administration, U.S. customers experienced an average of nearly six hours of power interruptions in 2018. If you have invested in a generator, you’ve prepared for when a storm hits, right? Almost. Even with a generator, you still need a battery backup, also known as an Un...
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  • Key Factors in Choosing the Right UPS

    Key Factors in Choosing the Right UPS

    Sep , 26 2022
    You rely on your UPS system for backup if your power goes out, right? But does your UPS have your back? That is, will it provide a bridge of power long enough for what you need? At the very least you will want to save your data and perform a safe shutdown. Your UPS backup battery will only provide power for a set amount of time, known as runtime. In this article, we will provide a step-by-step app...
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  • Failure causes of lithium battery- Failure in the production process

    Failure causes of lithium battery- Failure in the production process

    Oct , 08 2022
    In the production process, personnel, equipment, raw materials, methods, and the environment are the main factors that affect product quality, and the production process of LiFePO4 power batteries is no exception. Personnel and equipment belong to the category of management, so we mainly discuss the last three influences factor. Failure of batteries caused by impurities in electrode active materia...
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