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　　What are the fast charging technologies for mobile phones?

　　A charging method that can bring the battery to or near a fully charged state within 1 to 5 hours. It is often used for charging traction batteries when they need to be restored to full charge within a short period of time. Normal charging of the battery takes about 10 to 20 hours. How to charge the battery quickly without damaging the performance and life of the battery is a hot research topic that people are paying attention to.

　　Mobile phone fast charging technology is used by more and more mobile phone manufacturers. Nowadays, people are becoming more and more dependent on mobile phones. They hold their mobile phones almost all the time, so now people feel the most pain when their mobile phones are out of power. , people who play mobile phones really hope that their mobile phones can be charged quickly, and quickly return their mobile phones to their arms^-^! So now mobile phone fast charging technology is getting more and more attention! I am here to compile some knowledge about fast charging of mobile phones. What are the technologies for fast charging of mobile phones for your reference?

　　Tools/Materials

　　fast charging mobile phone

　　Method/steps

　　Overview of mobile phone fast charging technology:

　　At present, mobile phone fast charging technology is mainly divided into two categories: low-voltage fast charging and high-voltage fast charging.

　　There are four main mobile phone fast charging technologies: OppO's VOOC flash charging (fast charging technology that charges for 5 minutes and calls for 2 hours), Samsung's FastCharge, Qualcomm's QuickCharge, and MediaTek's pumpExpress.

　　Introduction to mobile phone fast charging technology:

　　1. 5 minutes of charging, 2 hours of talk time OppO’s VOOC flash charging technology

　　There are two general ways to increase the charging speed, one is to increase the voltage, and the other is to increase the current. Increasing the voltage will increase the heat generated during charging, accelerate battery aging and may cause safety hazards, so the actual effect is not good. In contrast, increasing the current is much more realistic. VOOC technology uses a low-voltage, high-current mode to ensure safety during the charging process.

　　The actual effect of VOOC flash charging is excellent. The 3000mAh battery can be charged to 75% in 30 minutes, and 5 minutes is enough to charge for 2 hours of talk time.

　　Currently, the models that use VOOC flash charging include: OppOR7s, OppOR7, OppOR7plus, OppOFind7, OppOR5, OppON3, and OppOU3.

　　2. Qualcomm QuickCharge2.0

　　Qualcomm QuickCharge2.0 technology is an upgraded version of QuickCharge1.0 and adopts a new specification. The charging speed is increased by increasing the current and voltage at the same time. In order to prevent damage to the battery caused by increasing the voltage, QuickCharge2.0 adds a special chip. In order to prevent older versions of mobile phones from being burned by excessive current when charging, a special IC judgment switch was added.

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