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

    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

    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

    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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  • Radio Frequency Interference Filters (RFI)

    Radio Frequency Interference Filters (RFI)

    Apr , 03 2025
    Chapter 1: Application Scenarios of RFI Filters in Industrial Chargers RFI Filter is a key component for solving high-frequency electromagnetic interference (EMI), which is especially indispensable in high power and high frequency equipment such as industrial chargers. Industrial chargers are often faced with complex electromagnetic environments: fast switching of switching power supplies, high-cu...
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  • How electrolytic capacitor work for industrial battery charger

    How electrolytic capacitor work for industrial battery charger

    May , 16 2025
    I. What is electrolytic capacitor: 1. Electrolytic capacitor, as the “energy storage heart” of charger power module, bears the key tasks of filtering, voltage stabilization and transient response. Its large-capacity characteristics (up to tens of thousands of μF) can effectively absorb the pulsating current after rectification, reduce output ripple, and ensure that the charging process is stable a...
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  • An Overview of HV Substation Equipment — with Integration of High-Current DC Charging Systems

    An Overview of HV Substation Equipment — with Integration of High-Current DC Charging Systems

    May , 24 2025
    Each operating device in a high-voltage substation serves a vital role. Their shapes and sizes vary depending on their location and purpose, but together they ensure safe, stable, and efficient operation of the entire installation. 1. Switchgear: The Functional Core of a Substation Switchgear consists of various components like circuit breakers, disconnectors, earthing switches, and instrument tra...
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  • Calculation of the heat generation of lithium batteries

    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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  • The reason why LiFePO4 batteries cannot be charged but can be discharged below 0℃

    The reason why LiFePO4 batteries cannot be charged but can be discharged below 0℃

    Jun , 07 2025
    Why LiFePO4 Batteries Cannot Be Charged Below 0°C but Can Still Discharge The reason why LiFePO4 (Lithium Iron Phosphate) batteries, such as the EverExceed battery range, cannot be charged below 0°C yet can still discharge lies mainly in their electrochemical characteristics and safety considerations. 1. Why Charging Is Restricted at Low Temperatures Lithium Plating Risk: At sub-zero temperatures,...
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  • 8 tips to avoid ground loops when dealing with signal level circuits

    8 tips to avoid ground loops when dealing with signal level circuits

    Jun , 27 2025
    Ground loops and signal noise General recommendation is to properly design and implement the facility's grounding system to avoid unwanted involvement of ground loops with the operation of the equipment. This kind of approach can also eliminate the need to consider equipment modifications and to engage in costly diagnostic efforts since most trouble involving common-mode noise is avoided in the si...
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  •  Protecting Digital Substations in a Hostile World: How EverExceed Supports Intelligent Electronics (IEDs)

    Protecting Digital Substations in a Hostile World: How EverExceed Supports Intelligent Electronics (IEDs)

    Jul , 19 2025
    In today’s power systems, digital substations have revolutionized control and monitoring with their intelligent electronic devices (IEDs). However, these advanced infrastructures are not immune to threats. In fact, their complexity and sensitivity demand a new level of protection—and that’s where EverExceed comes in. Understanding the Threats to Digital Substations Whether built from the ground up...
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  • The Impact of High Temperatures on Lead-Acid Batteries and Recommended Solutions

    The Impact of High Temperatures on Lead-Acid Batteries and Recommended Solutions

    Jul , 19 2025
    Lead-acid batteries are widely used in energy storage, telecom base stations, and UPS systems. However, their performance is significantly affected by ambient temperature—especially under high-temperature conditions, which can lead to rapid degradation and potential safety risks. Below are six key impacts of high temperature on lead-acid batteries and how to address them: 1. Short-Term Capacity Ga...
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