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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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  • Influence of electrolyte on battery performance

    Influence of electrolyte on battery performance

    Nov , 29 2024
    (1) The relationship between the electrolyte concentration and the electromotive force and open circuit voltage of the lead-acid battery. The electromotive force and open circuit voltage of the lead-acid battery are related to the concentration of the electrolyte of the lead-acid battery than H2O4, and the electromotive force and open circuit voltage of the lead-acid battery also decrease with the...
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  • Measurement method and procedure of internal resistance of lead-acid battery

    Measurement method and procedure of internal resistance of lead-acid battery

    Dec , 07 2024
    1.Procedure for Battery Resistance Tests Use the following test procedure or use the capacity test procedure described in IEEE std. 1188. Step 1. Make sure all battery connections are clean, tight and free of corrosion. Pay attention to the insulation of tools to avoid short-circuiting of batteries. Step 2. Equalizing charge the batteries for 12hrs; Constant voltage & limited maximum current c...
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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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