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"Charge for 5 minutes, call for 2 hours", this advertising copy makes OPPO popular in 2015, its own research and development of fast charging technology VOOC, has also applied for up to 18 patents, will increase the fastest charging speed by more than four times. Fast charging seems to have been deeply rooted in the hearts of the people. At present, there are more and more mobile phones supporting fast charging. Fast charging seems to have become the standard of mobile phones. Here are some of the current mainstream fast charging technology.
1. The Principle of Fast Charging
Current fast charging schemes can be roughly divided into the following three types:
High Voltage Constant Current Mode: In general, the charging process of mobile phones is to reduce 220V voltage to 5V charger voltage and 5V charger voltage to 4.2V battery voltage. During the whole charging process, if the voltage is increased, heat energy will be generated, so when charging, the charger will heat up, and the mobile phone will also heat up. Moreover, the greater the power consumption, the greater the battery damage.
Low Voltage and High Current Mode: When the voltage is fixed, increasing the current, shunting can be carried out by parallel circuit. At constant voltage, the less pressure each circuit will share after shunting, and the less pressure each circuit will bear if it is processed in the same way in the mobile phone.
High Voltage and High Current Mode: This mode increases both current and voltage. As can be seen from formula P=UI, this mode is the best way to increase power, but increasing voltage will generate more heat energy, so that the more energy it consumes, and the voltage and current are not unlimited and arbitrary increase.
2. Common fast charging technology
At present, the main fast charging technologies are as follows: USB PD, Qualcomm Quick Charge technology, Pump Express Plus technology, Samsung's AFC (Adaptive Fast Charge), Huawei's FCP and SCP, OPPO's VOOC technology and TI's Max Charge fast charging technology. Qualcomm's Quick Charge is the most common on mobile phones, with flagship mobile phone products as the main ones. Apple uses USB PD, and mobile phone manufacturers using MediaTek chips naturally have to choose Pump Express Plus technology.
What SINOLI battery can do for you?
SINOLI battery is a lithium ion battery manufacturer. It's battery should equip with particular battery charger, fast charger or high power charger etc. those charger should be designed exclusively for SINOLI battery, especially can not be used SLA battery charger.