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Electropaedia Battery Technology Glossary
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Àý 1 Aonde£¬Cathode£¬Positive electroe£¬Negative electrodeµÄ¶¨Òå
Àý2 Charge efficiencyºÍCoulombic EfficiencyµÄ¶¨Òå
Àý3 SOC£¬DOD£¬SOHµÄ¶¨Òå
Àý4 Calendar life Cycle life µÄ¶¨Òå
Àý5 Internal impedanceºÍInternal resistance µÄ¶¨Òå
A
Active material - The chemically reactive materials in an energy cell which react with each other converting from one chemical composition to another while generating electrical energy or accepting electric current from an external circuit.
Ageing - Permanent loss of capacity with frequent use or the passage of time due to unwanted irreversible chemical reactions in the cell.
Ambient temperature - The average temperature surrounding the battery, typically air.
Anode - The electrode in an electrochemical cell where oxidation takes place, releasing electrons. During discharge the negative electrode of the cell is the anode. During charge the situation reverses and the positive electrode of the cell is the anode.
Arrhenius Equation - The relationship between the rate at which a chemical reaction proceeds and its temperature. In general terms, heat speeds up the chemical action.
Assembled battery - A battery composed of two or more cells.
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B
Battery Management System (BMS) - Electronic circuits designed to monitor the battery and keep it within its specified operating conditions and to protect it from abuse during both charging and discharging.
Button cell - Miniature cylindrical cell with a characteristic disc shape.
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C
C Rate - C is a value which expresses the rated current capacity of a cell or battery. A cell discharging at the C rate will deliver its nominal rated capacity for 1 hour. Charging and discharging currents are generally expressed as multiples of C. The time to discharge a battery is inversely proportional to the discharge rate.
Calendar life - The expected life time duration of a cell whether it is active use or in storage
Capacitance (C) - A measure of the ability of a device to store charge per unit of voltage applied across the device. C=Q/V Farads.
The capacitance of a parallel plate capacitor is given by C = ¦Å A/d where ¦Å is the permittivity of the dielectric, A is the area of the plates (electrodes) and d the distance between them.
1 Farad = 1 Coulomb per Volt. (Q / V)
The current through the capacitor is given by the relationship i =C d/dtV(t)
Capacitor - A passive electrical device that stores energy in an electric field.
Capacity - The electric energy content of a battery expressed in "Watt hours". Batteries with the same output voltage also use "Ampere hours" for comparing capacities.
Cathode - The electrode in an electrochemical cell where reduction takes place, gaining electrons. During discharge the positive electrode of the cell is the cathode. During charge the situation reverses and the negative electrode of the cell is the cathode.
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