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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

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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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

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

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

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

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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The principle of maintenance-free lead-acid batteries is based on the following aspects

Mar , 07 2025

1、Basic Electrochemical Principles The charging and discharging process of maintenance-free lead-acid batteries is based on electrochemical redox reactions. When discharging, metal lead is the negative pole, the oxidation reaction occurs, the electrode reaction formula is Pb +SO42-===PbSO4+ 2e-; lead dioxide is the positive pole, the reduction reaction occurs, the electrode reaction formula is PbO...

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Advantages of lead-acid colloidal batteries

Mar , 28 2025

1. Long service life: The colloidal electrolyte can form a solid protective layer on the plate, reduce the bending and short circuit of the plate when used under heavy load, delay the softening and shedding of the plate, and make the battery life reach 1.5-2 times that of ordinary lead-acid batteries. 2. High safety: The electrolyte is solid, sealed, and never leaks. There is no acid mist gas prec...

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How to choose the right lithium battery

Mar , 28 2025

1. Identify application scenarios The purpose of lithium batteries directly affects parameter selection: Portable devices (mobile phones, drones, cameras): give priority to high energy density (such as ternary lithium batteries) and lightweight. Electric vehicles/power tools: require high discharge rate (C-rate) and long cycle life (such as lithium iron phosphate batteries). Energy storage systems...

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What Is UPS Input Power Factor and Why It Matters

Apr , 12 2025

Power factor (pf) is the difference between the actual energy consumed in an AC circuit and the apparent power. It will be calculated as a decimal or percentage between 0-1 pf and 0-100%, i.e. 0.9 pF=90%. Meaning of UPS power factor UPS input power factor UPS input power factor is the ratio of UPS input active power to input power. UPS is not only a part of the power supply, but also the load of t...

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Calculation of the heat generation of lithium batteries

May , 24 2025

The calculation of heat generation of lithium batteries is an important part of battery thermal management, involving multiple heat sources. The following are the detailed calculation methods and steps: 1. Main source of heat The heat generation of lithium batteries mainly comes from the following parts: Joule heat (Qj) : The heat generated when current passes through the internal resistance of a ...

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