Wednesday, March 20, 2013

First Lithium Ion battery for Motive Power

The Hawker XFC-Li is the first motive power battery from EnerSys to utilise advanced lithium-ion technology. It is a 24V battery with 38Ah capacity that incorporates cells with a lithium iron phosphate (LiFePO4) cathode and graphite anode with an inherently safe lithium-ion electrolyte. This delivers significant benefits compared with conventional units including greater power density, longer pack life and excellent performance at low temperatures. The battery can be fully recharged in less than one hour from 80 per cent depth of discharge and short, opportunity charges are readily accepted due to its very low internal resistance.

Each Hawker XFC-Li is equipped with a battery management system (BMS) for continuous monitoring of the individual cells to ensure correct use and safe operation with protection against over temperature, overcharge, over voltage, under voltage and short circuits. The BMS also incorporates cell balancing technology which promotes maximum performance throughout the battery’s service life. An on-board LED provides state of charge data while links with external monitoring and management systems can be enabled by an integrated CAN bus.

The second new battery is a 24V model with 82Ah capacity which is based on the same proven thin plate pure lead (TPPL) technology used in the existing Hawker XFC range. Its blocs incorporate pure lead plates which are much thinner than conventional lead calcium grids. These have lower impedance which enables higher current flows in recharge and discharge modes. The electrolyte is absorbed in a superior quality microporous glass mat separator with high absorption and stability for enhanced cyclic capability. These attributes ensure a full recharge is completed in under three hours from 60 per cent depth of discharge.

motive power battery

The battery pack incorporates a low voltage alarm – LVA. This small electronic device is positioned between the positive and negative cables and warns the operator whenever the battery reaches a specific depth of discharge that a recharge is required. The battery pack also includes a Wi-IQ? monitoring device which stores comprehensive operational records. This information can be transferred to external battery management applications using wireless communications or a USB port for further analysis.

Both models are supplied with a high frequency ups backup power integrated into the top compartment of the battery tray. High frequency charging in inherently more efficient than traditional methods while the charger ensures the correct parameters for rapid recharge and opportunity charging whatever the battery’s state of discharge. By comparison, conventional batteries only provide optimum performance when discharged to a specific level before being fully recharged for 8-12 hours. This often means extra batteries are required to support continuous equipment availability or can lead to interruptions in charging which is potentially damaging to conventional battery technologies.

High-frequency charging also ensures the batteries consume less energy, with resultant lower electricity costs, and have a smaller carbon footprint than conventional units. The batteries are totally maintenance free and require no topping-up with water for low overall cost of ownership while minimum gassing means they can be used in confined spaces and public areas.

www.everexceedcorp.com develop, design, and manufacture products to provide safe, reliable power solutions worldwide. EverExceed has operations on six continents including three manufacturing plants and two research & development centers, allowing our products be available and enjoy technical support all over the world. EverExceed now offers a full range of lead acid batteries (network & motive power) and Nickel Cadmium batteries covering a wide range of applications from sophisticated telecommunications, uninterruptible power supplies, AGV to emergency lighting and security applications, and offers a full range of Monocrystalline, Polycrystalline Solar Modules combined with PWM/MPPT solar controllers, Grid-off/Grid-tied inverter covering a wide range of applications from sophisticated telecommunications, Power Electricity, Remote Area Electricity applications.

This article is come from:http://www.game-dice.net/first-lithium-ion-battery-for-motive-power/

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