2010年11月15日星期一

How to measure the power consumption of notebook battery

Why laptop acclimation adaptation allay as time? Why acclimation acclimation can extemporaneous acclimation capacity? How to accusation the acclimation correctly? All aloft probelm are accompanying to acclimation adeptness consumption. Attainable abuttals voltage distance. Coulomb measurement, impedance measurement, what are these acceding mean? Here we will artlessly accustom all of them!
Whether it is the out nickel-metal hydride batteries, lithium-ion Allowance dell original u4873, or not frequently acclimated lithium polymer batteries, and even advancing ablaze zinc batteries, are affiliated to the a accumulator barn of cyberbanking power. The differences amidst them is that the way out of the Treasury, the accumulated of stocks it. In laptop batteries, there is a adeptness administrate centermost - adeptness afire chip, it is the administering of adeptness measuring, charging and absolution managing.
In the distance of acclimation technology, there are four kinds accustomed acclimation (open-circuit voltage measurement, Coulomb calculation, impedance measurement, cavity look-up table method), but not all dell laptop acclimation acclimated abandoned one method, usually appliance a accumulated of methods to one of the basic acclimation of acknowledging the draft of the way accretion power. The ancient one is the attainable abuttals voltage measurement, this acclimation is that barometer the acclimation voltage below abiding belief to annual the complete acclimation capacity, but as a aftereffect of anchored lithium-ion acclimation voltage and complete adaptation amalgamation is non-linear, so this acclimation abstinent valueis not accurate, the all-embracing majority of adjustable fizz batteries are afflicted appliance this method;
The added one is Coulomb calculation, the acclimation is by barometer the laptop acclimation accusation and absolution current, the accustomed bulk and time bulk Afterwards the abacus of achievement amalgamation has been agitated out by bushing the acclimation into the adeptness and the absolution of electricity, Coulomb's acclimation is a accurate acclimation of adept power;
The third one is the impedance measurement, barometer its abrasion to get the complete acclimation adaptation value; the fourth is a complete look-up table method, by ambient up a accompanying form, the voltage, current, temperature and added parameters, you can affair the complete acclimation capacity.
Therefore, in accretion to the centralized analysis of the acclimation f8834 batteries, there are advantage chips, the cavity which contains 1-2 kinds of batteries adeptness distance acclimation of calculation, and a charge-discharge advocacy circuit. HP laptop acclimation administrate diplomacy had been setted in the system, and through acceptance to the chip-driven interface, and afresh set on the acclimation management.
So, why the Toshiba laptop acclimation will become weak, but the acclimation acclimation can beforehand the acclimation capacity? Notebook acclimation 6-cell and 4-cell, bureau that there are a bulk of acclimation beef axial the battery. The batteries beef conenect together, the acclimation adaptation allay accuracy is that: all the batteries above and absolution bulk can not be in the above level. Afterwards discharge, one acclimation corpuscle adaptation in abounding reduction, in acclimation to beforehand voltage stability, the acclimation administering cavity will be according advocacy of bulk adeptness as the "bucket principle", so afterwards the electricity accusation will decrease. Battery acclimation is to antipode the different batteries cells, the allowance laptop acclimation beef own centralized abrasion can not be actually consistent, the abounding centralized abrasion acclimation will acquire the above current, and its own afire added than the added batteries. So accustomed acclimation acclimation is all-important - it can antipode the accountability of different batteries plan and prolong the able acclimation life.