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  • What is the impact of low temperature on lithium batteries and solutions

    What is the impact of low temperature on lithium batteries and solutions

    Apr , 20 2024
    The use of lithium batteries in low battery temperature environments is limited. In addition to a severe drop in discharge capacity, lithium batteries cannot be charged when the battery temperature is low. When the battery is charged at low temperature, the lithium ion embedment on the battery graphite electrode and the lithium plating reaction exist simultaneously and compete with each other. Und...
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  • Long-term storage methods for lithium batteries and storage requirements for lithium iron phosphate batteries

    Long-term storage methods for lithium batteries and storage requirements for lithium iron phosphate batteries

    Apr , 20 2024
    What impact will the lithium battery have after being put aside for a long time? When the lithium battery is idle, due to the nature of the battery itself, self-discharge, passivation of positive and negative electrode materials, electrolyte decomposition and other phenomena will occur. The instability of the negative SEI will lead to the rapid decline of the negative active substance, which is ea...
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  • THE RELATIONSHIP BETWEEN APPARENT POWER, ACTIVE POWER, AND REACTIVE POWER

    THE RELATIONSHIP BETWEEN APPARENT POWER, ACTIVE POWER, AND REACTIVE POWER

    Apr , 20 2024
    The apparent power, active power, and reactive power meet the following triangular relationships: Figure (1): Schematic diagram of the power triangle S:Apparent power S 2 =P 2 + Q 2 Q:Reactive power P = S *cosφ
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  • Harmonic current

    Harmonic current

    Apr , 20 2024
    What does harmonic current mean Harmonic current is a collective term for the sinusoidal components whose frequency is an integer multiple of the original periodic current frequency. A harmonic current with a frequency equal to k times the frequency of the original periodic current is called a k-th harmonic current, and all harmonic currents with a frequency greater than 1 are collectively referre...
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  • Reason analysis of low capacity of lithium battery cell

    Reason analysis of low capacity of lithium battery cell

    Apr , 13 2024
    In the process of lithium battery manufacturing, the capacity of lithium battery cells is sometimes lower than expected, which not only affects the performance of the battery, but also shortens its service life. This paper will deeply analyze the reasons for the low capacity of lithium battery cells, in order to provide reference for related research and production. 1. Excessive and insufficient n...
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  • Influence of self-discharge of lithium battery on lithium battery

    Influence of self-discharge of lithium battery on lithium battery

    Apr , 13 2024
    I. Introduction The existence of self-discharge phenomenon of lithium battery has become an important factor restricting its performance and life. In this paper, the principle, influencing factors and countermeasures of lithium battery self-discharge are discussed. Second, the principle of lithium battery self-discharge Self-discharge refers to the phenomenon that the battery capacity automaticall...
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  • Reactive power compensation

    Reactive power compensation

    Apr , 12 2024
    The electrical equipment of the power system will produce active power and reactive power when in use. Active power converts electrical energy into mechanical, thermal, chemical, or acoustic energy, while reactive power converts electrical energy into another form of energy, such as electrical energy occupied by electromagnetic components to build up a magnetic field. The hazards of reactive power...
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  • What happens when the neutral and ground wires are reversed?

    What happens when the neutral and ground wires are reversed?

    Apr , 12 2024
    AC power is basically generated by the generator in the power plant. The generator has three-phase windings with an electrical angle difference of 120 ° between them. When connected in a star connection method, there is a common point between the three windings, called the neutral point. This neutral point N is usually connected to the ground PE, so it is called PEN together. If the output current...
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  • The difference between thermal magnetic and electromagnetic types of molded case circuit breakers

    The difference between thermal magnetic and electromagnetic types of molded case circuit breakers

    Apr , 07 2024
    The main differences between thermal magnetic circuit breakers and electromagnetic circuit breakers are reflected in triggering time, protection sensitivity, overload resistance, working principle, and applicable scenarios. The rmomagnetic Electronic Here is a detailed introduction: a. Trigger time. The triggering time of electromagnetic circuit breakers is relatively short, usually only a few ten...
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