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What is the accelerated charging principle of flash charger?
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1?? Flash charging is the meaning of fast charging, but it is also different from fast charging.
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2?? Charging pays attention to voltage, first of all, the charging voltage is higher than the battery voltage, with the pressure difference to produce charging current,
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3?? The principle of flash charge is to increase the charging current (such as 5V4A or greater) under the appropriate charging voltage, which is similar to the large diameter water pipe flow must be large, and the maximum charging efficiency can be generated when charging, but the battery also has its bottleneck effect, and it also has certain current limiting measures to ensure that the battery will not overheat when charging. Therefore, a few minutes or dozens of minutes of flash charging has high efficiency and small battery damage.
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4?? Similar to flash charging is fast charging, it is different from flash charging is to increase the voltage, reduce the charging current (such as 12V2A), that is, improve the voltage to improve the current intensity of charging, this fast charging is like two of the same outlet pipe, fast charging principle is a high pressure pump, which must have an impact on battery life, why people pay attention to the night with (5V1 ~ 2A) slow charging, It is to reduce the low temperature of the battery when charging and make the battery longevity.
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5?? Therefore, the acceleration principle of flash charging is equal to increasing the diameter of the outlet pipe within the appropriate pressure difference range.
There are many ways to achieve wireless charging: electromagnetic induction, electric field coupling, magnetic resonance and radio wave transmission, etc. At present, the most frequently used and most popular in smart phones is electromagnetic induction wireless charging, and the wireless charging technology of Millet 9 uses this way.
The principle of electromagnetic induction wireless charging is actually very simple: when the current of the wireless charger's transmitting coil passes through the coil, a magnetic field will be generated, and although the receiving coil on our mobile phone is not energized, when it is close to the transmitting coil, due to the principle of electromagnetic induction, the magnetic field generated by the transmitting coil will allow the receiving coil to generate current, thus wireless charging for the smartphone.
The key to Millet 9's ability to achieve the world's first 20W wireless charging is to use the same half-voltage direct charging scheme as wired fast charging, which is what we often say is charge pump technology. We know that the fast charge scheme of mobile phones on the market at present is divided into two kinds: high voltage and low current and low voltage and high current. The charge pump technology is to achieve both high voltage charging and the use of large current scheme, it as a DC-DC (DC-DC) converter, the use of capacitors as energy storage components, used for voltage conversion, its conversion efficiency is very high, almost 100%!