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  • Analysis and application of charge and discharge curve of lithium battery

    Analysis and application of charge and discharge curve of lithium battery

    Jun , 27 2024
    Abstract: In this paper, the analysis method of charge and discharge curve of lithium battery is introduced in detail, including charge efficiency, discharge characteristics, capacity evaluation, internal resistance evaluation and cycle life evaluation. Through the interpretation of the charge and discharge curve, the performance and characteristics of lithium batteries can be deeply understood, w...
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  • Explanation of terms related to UPS power supply

    Explanation of terms related to UPS power supply

    Jul , 06 2024
    Transient Recovery Time: The time it takes for the output voltage to return to the specified range when there is a sudden change in load (0‐100%, 100%‐0), usually on the order of seconds (ms). Filter: a device used to eliminate noise, the input or output filtered to obtain a pure contention of the alternating current. Shielding: The use of physical principles, used to isolate the electromagnetic r...
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  • The characteristics and principle analysis of internal resistance of lithium battery

    The characteristics and principle analysis of internal resistance of lithium battery

    Jul , 12 2024
    The internal resistance of the battery is one of the most important characteristic parameters of the battery, which is an important parameter to characterize the battery life and the operating state of the battery, and an important symbol to measure the difficulty of the transmission of electrons and ions in the electrode. The internal resistance also reflects the health of the battery. The intern...
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  • Overvoltage protection and undervoltage protection principle of lithium battery

    Overvoltage protection and undervoltage protection principle of lithium battery

    Jul , 12 2024
    1, lithium battery protection board composition The general lithium battery protection board is composed of a control IC, a MOS tube, a resistance capacitor, and a FUSE, as shown in the following figure 1, overcharge protection principle When the battery is charged, the current (direction shown by the arrow) flows into the positive electrode of the battery pack and flows out of the negative electr...
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  • How to extend the power supply time of uninterruptible power supply (UPS)

    How to extend the power supply time of uninterruptible power supply (UPS)

    Aug , 03 2024
    There are two ways to extend the duration of an uninterruptible power supply： 1. Increase battery capacity. According to the length of time required to increase the number of batteries, but this method will cause a relative increase in battery charging time, but also increase the number of corresponding maintenance equipment, increase product size, resulting in an increase in the overall cost of U...
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  • Is the uninterrupted host suitable for computers to reduce hard shutdowns

    Is the uninterrupted host suitable for computers to reduce hard shutdowns

    Aug , 17 2024
    The best offline intelligent UPS 3000va 1800w backup battery for  desktop computers provides complete power protection to protect  connected devices from surges, overvoltage, and undervoltage damage. Is the uninterrupted host suitable for computers? Advanced microprocessor control technology enables UPS to maintain high performance and reliability, effectively operating to reduce en...
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  • Four operating modes of UPS

    Four operating modes of UPS

    Aug , 23 2024
    1、Normal operation mode The principle of the power supply system is that when the utility power is normal, the machine will convert the alternating current of the utility power to direct current, and then charge the battery for use when the power is interrupted; it is emphasized here that the power supply system will not only act when the power is out, such as when the voltage is too low or high, ...
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  • Effect of electrolyte density and discharge on lead-acid batteries

    Effect of electrolyte density and discharge on lead-acid batteries

    Nov , 29 2024
    (1) Electrolyte density under different geographical and climatic strips. Whether the electrolyte density is high or low, it is necessary to make a specific analysis for the specific situation. Winter temperature is low, the viscosity of the electrolyte is large, it is not easy to penetrate the inside of the plate, the end voltage and capacity of the battery will decline, especially in the strong ...
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  • Irreversible lithium evolution of LiFePO4 batteries at low temperatures and its effect on battery performance degradation

    Irreversible lithium evolution of LiFePO4 batteries at low temperatures and its effect on battery performance degradation

    Dec , 07 2024
    Lithium evolution is the main failure problem faced by lithium-ion batteries during low temperature charging. Due to the low diffusion rate of lithium ions in the solid phase of graphite particles and in the liquid phase of the electrolyte at low temperatures, the negative polarization increases during charging and lithium evolution occurs, and the precipitated lithium metal is divided into revers...
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  • Lithium battery life The reason for the slow charging speed

    Lithium battery life The reason for the slow charging speed

    Dec , 13 2024
    1. Electrical problems: Insufficient power of the charger is one of the common reasons for slow charging speed. If the output current of the charger used is small and cannot meet the maximum charging current requirements of the battery, the charging speed will be limited. For example, a lithium battery mobile phone that supports fast charging, the original charger output current is 3A, and the cha...
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  • Causes and methods of lithium battery life decline

    Causes and methods of lithium battery life decline

    Dec , 13 2024
    1. Battery aging: After multiple charge and discharge cycles, the chemical substances inside the lithium battery will gradually undergo irreversible changes. For example, the structure of the electrode material may be damaged when lithium ions are embedded and deembedded between the positive and negative electrodes. Taking the common lithium cobalt oxide cathode material as an example, with the in...
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