1, flash charge is to improve the charging current, fast charge is to improve the charging voltage, but the essence of both are to improve the charging power, the two charging methods are not different in speed. Flash charge is low voltage fast charge, fast charge is high voltage fast charge.
2, fast charge and flash charge are the technology to speed up the charging speed of the battery, but the technical principle is slightly different. Fast charging is nothing more than increasing the power of charging. In the case of a certain battery capacity, increasing the power can reduce the charging time, the greater the power, the shorter the charging time. The flash charging temperature is low, and the fast charging temperature is high.
3, the charging speed is not the same, flash charging is faster. The most important difference is that the safety factor of flash charging is higher than that of fast charging.
Now fast charging is basically divided into two categories:
1, low voltage fast charge: represents OPPPO VOOC flash charge.
2, high voltage fast charge: are Qualcomm's universal free program, on behalf of MOTO turbo fast charge, Vivo dual engine flash charge, the basic Qualcomm chip also supports fast charge.
Low voltage and high current mode: in the case of a certain voltage, increase the current, you can use the parallel circuit to shunt, under constant voltage, the smaller the pressure shared by each circuit after the parallel shunt, and the same processing in the mobile phone, the smaller the pressure endured by each circuit.
High voltage constant current mode: The charging process of the general mobile phone is to first reduce the 220V voltage to 5V charger voltage, 5V charger voltage and then to 4.2V battery voltage. During the whole charging process, if the voltage is increased, heat energy is generated, so when charging, the charger will heat up, and the phone will heat up. And the greater the power consumption, the greater the damage to the battery.
VOOC flash charging technology belongs to low voltage and high current fast charging, and other fast charging belongs to high voltage and low current fast charging. High voltage charging, mobile phone temperature is relatively high, relatively speaking, VOOC flash charging security is very high.
Fast charging and flash charging refers to fast charging technology, but the name is different, it can be said that flash charging is a type of fast charging, but mobile phone manufacturers in order to highlight the advantages of their own research and development of fast charging technology, they use a unique name.
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However, if you want to have a rigorous attitude, you will find that flash charging will only appear on OnePlus mobile phones and OPPO mobile phones, because there are a total of three fast charging schemes on the market, VOOC flash charging technology of OnePlus and OPPO, QC fast charging technology of Qualcomm platform, and Pump Express technology based on Mediatek platform.
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In addition, flash charging is also a unique term for OPPO plus, the difference between the three technologies is that OPPO, the flash charging technology advocated by one Plus, is a simple and rough charging method, directly conveying 4A current with 5V voltage, while Qualcomm and Mediatek's charging scheme is to increase the voltage and then increase the current, so flash charging technology can also be called high-current charging technology.
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Technically speaking, flash charge is indeed different from Qualcomm and Mediatek's scheme, VOOC flash charge technology uses low voltage and high current mode, and both of them use high voltage charging.
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In terms of actual effect, VOOC flash charge and Qualcomm and Mediatek's fast charge effect is not much different, the peak power can reach about 20W or even higher, compared with the traditional 5V\/2A charger can greatly shorten the charging time.
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In addition, in the long term, VOOC flash charging is actually the trend of The Times, and the future fast charging schemes of Mediatek and Qualcomm will also theoretically develop in the direction of low voltage and high current.
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So which is better, flash charge or fast charge? In terms of market effect, the gap between the two is not big, but if you want to say, which is the fastest charging technology on the market at present, it is still the number of OPPO Find X Super VOOC, which is currently the most high-end charging technology put into commercial use on the market.