Mobile power source may be one of creations with 21 the most economic centuries, but it is however most let a person " the heart is tired " invention, want to also can blame batteries only quite sneaking. "Like you to cannot bear the sight of me namely, the model that does not to drop me again " author heart is deep to mobile power source but. Probably the wonderful hour that the batteries of 500mAh of times of machine of function of your this yearning charges this time 5 days.
As the development of the network, of big screen mobile phone gain ground, although capacity of mobile phone batteries comes to 2000mAh, but the addition of batteries capacity is far not as good as of n spend career, carry charge treasure made a habit. But to cast off " mobile brick " manacle, decrease to the masses negative, filled a technology quickly to become the compromise proposal that casts off mobile power source seemingly.
4 link that the mobile phone charges
The mobile phone charges need course charges adapter and mobile phone carry voltage twice or voltaic change, pass those who fill electrical wiring to transmit the control with mobile phone IC, achieve the goal that charges to batteries thereby, of the mobile phone charge speed and this 4 person inseparable.
The task of power source adapter uses the average resident of 220V electric voltage to change voltage of enough susceptive of the function that it is a hand namely, hand function bears of how old voltage and mobile phone manufacturer fill an agreement quickly to concern. Fill quickly with the QC 2.0 that connects high for exemple, charging the low pressure that 12V/9V/5V is voltage drop inside adapter, undertake outputting again.
Fill the data line that wire cable says usually namely, basically be in charge of voltage / electric current from charge adapter end transmits a mobile phone to carry, the loss of energy produces in the meeting in transmission process. So actual fill electric power effectively to meet lower than filling electric power nominally.
Fill chip quickly namely IC of so called mobile phone, will charge the voltage that adapter transmits the voltage that come over to be changed into Chi Kecheng of mobile phone report to suffer, charge to batteries next.
The main parameter of batteries includes batteries capacity MAh, the add boat with the mobile phone be closely bound up, everybody longs for long add boat day and night. Besides the capacity, still have charge cut-off voltage, acceptability the biggest charging current, express with NC commonly. Exemple the batteries that is 4000mAh like a capacity, what demarcate points to for 1C is the 1 fold electric current with the capacity will charge, charge if charge for 0.5C,time is 1 hour of; , criterion charging current is 0.5*4000=2000mA, charge time is 2 hours.
General mobile phone charges cent is 3 phase.
Tiny stream stream charge, when the voltage of batteries is inferior, the sex of lithium ion activity inside batteries is poor, internal resistance is greater, can accept lesser charging current only right now, cause batteries ageing greatly too fast, still harm battery life. When be just like birdbath to just began to receive water, current wants small in case slop.
Constant current charges, when above of 2V of batteries voltage prep above, the sex of lithium ion activity of batteries is activationed adequately, internal resistance is lesser also, enter right now in front acceptability electric current undertakes says batteries be filled quickly, take a capacity 70% to 80% above.
Constant voltage phase, when batteries voltage is close to cut-off voltage, fill chip quickly to be able to reduce charging current automatically, reduce charge speed, control " spray " do not exceed range, till fill cell completely, so the mobile phone charges finally rate is slower.
So the mobile phone charges from 0 to 100% n, filling electric power effectively is not undertake charging with the power of demarcate from beginning to end, can corresponding decrescent.
Fill two kinds of plan of the technology quickly
After knowing 4 link that the mobile phone charges and 3 level, fill a technology quickly to begin a breakthrough from these respects. The classical physics that concerned electricity introduces here is formulary:
W=Pt among them, p: ? β ?W) T: ? Run quickly?
P=UI=I2R=U2/R among them, p: ? β ?w) U: ? Miao?V) I: ? Si?A) R: ? Qian? Ω )
Q=I2Rt among them, i: ? Si?A) R: ? Qian? Ω ) T: ? Go straight towards?h)
Above formula is OK very clear know, want to shorten charge time, need rises fill electric power, and raise the means that charges electric power to have 3 kinds. Tension heightens while electric current is constant, electric current increases while tension is constant, increase voltage and electric current at the same time, these 3 kinds of plan are inevitable is the loss of metropolis generation energy. And basically use two kinds of methods to improve charge efficiency at present.
Tall voltage, small electric current
What connect high is fast the typical delegate that filling plan is tall depress electric current, fill a standard quickly to be with QC2.0 exemple, charging the low pressure that 12V/9V/5V is voltage drop inside adapter, output a mobile phone to carry, circuit of the step-down inside the mobile phone changes tall voltage into the low voltage under 4.4V, inside the biggest electric current with acceptability batteries can.
What connect high at present is fast fill had developed QC4.0, fill electric power from what original QC 1.0 supports highest 5V/2A merely, to QC 2.0 4 archives of OK and compatible 5V/9V/12V/20V charge voltage, and Quick Charge 3.0 is supportive 3.6V the working voltage trends to 20V adjusts, quick Charge 4.0 is more offer highest 28W fill electric power. Using like the mobile phone such as Nubia, SamSung, hammer for example what connect high is fast fill an agreement.
Nevertheless this kind of plan cannot accomplish bright screen to also keep fast fill. Charging itself is calorific below bigger case, consider for mobile phone safety, general metropolis becomes when mobile phone bright screen fill slow.
Big electric current, low voltage
And the speed that charges to continue to rise, some manufacturers begin to move a knife to electric current. OPPO dare be a person first, took the lead in rolling out VOOC to shine fill a technology, increase charging current, to power source adapter, fill electrical wiring to fill chip cable, interface, quickly to undertake all-around transform. Embedded an intelligence chip, came true to drive technology of constant current of voltage annulus, section.
The profit that such doing was to bypass the step-down IC inside the mobile phone, need not step-down two, reduced loss, what still reduced mobile phone end at the same time is calorific, still can realize bright screen to be filled quickly. This revolutionary VOOC technology also made classical advertisement statement, "Charge 5 minutes, communicate two hours " .
Fill technical development quickly
No matter be to use tall voltage or big electricity these two kinds of plan, of the mobile phone fill electric power to cannot achieve 40W, and existing mobile phone fills electric power to be able to achieve 44W. This among them secret is charge pump.
Charge pump is a kind of dc - dc converter, use capacitor to be store can component, with will undertake voltage is changed. This technology increased voltage and electric current. Compare the efficiency at traditional IC90% , those who use charge pump technology is fast fill efficiency to be able to be achieved 98% , this was accomplished charge macroscopically speed.
No matter fill a technology quickly how to develop, the author thinks those who say is to cast off mobile power source, worry about the add boat problem of the mobile phone no longer, fill ability quickly to make me truly happy.
