Comparison between Apple Wireless charging scheme and 5W wireless charging scheme

Wireless charging solutions 7.5W And 5W contrast

The popular word this year is —— Wireless charging , I also began to find that many electronic devices around me have wireless charging functions . Tell the truth , At present, this technology has 10W Power to quickly and wirelessly charge the mobile phone , But in the hot summer , The room temperature is at 28℃ above , The wireless charging power of the mobile phone is basically maintained at 5W Power . In winter , The ambient temperature is 20℃ following , Will keep fast wireless charging , The charging speed of the mobile phone is acceptable .

Since wireless charging is not fast for mobile phones , Why do so many companies want to join this project ？ Search on Taobao , It is estimated that there are hundreds of different kinds of products , And the product details will say 7.5W、10W、5W, What do these mean ？ How about the actual charging effect ？ Today, let's take a comparative test .
at present 10W Wireless charging is mainly for Samsung and Huawei mobile phones , Most of the solutions are based on Samsung mobile phones , Because Samsung has more mobile phones with wireless charging function , Such as samsung S6、S7、S8、S9 wait , They have made wireless charging a standard feature of mobile phones .7.5W Wireless charging is mainly based on Apple phones , Such as iPhone8、iPhoneX Both support wireless charging . however , Samsung's official wireless charger can give Samsung mobile phones 10W Fast wireless charging , But only for Apple 5W Wireless charging , vice versa . So the third-party solution company has developed a wireless charging solution that is compatible with both specifications .

Have a look first 7.5W Wireless charging test .（ Testing conditions ：Qc2.0 The charger 9V Output , ambient temperature 29℃,iPhone8PLUS mobile phone , No air conditioning , Do not turn on the fan .）
As you can see from the following figure , in front 10 Minutes will jump to 7.5W Fast wireless charging , Since then, it has been maintained at 5W Charge ,iPhone8PLUS The mobile phone needs to be fully charged 4 More than a hour .

Look again 5W Wireless charger test of ：（ Testing conditions ：Qc2.0 The charger 5V Output , ambient temperature 29℃, samsung S7 mobile phone , No air conditioning , Do not turn on the fan .） samsung S7 Fully charged in 2 Hours 20 minute .

You can see from the curve in the above figure , The current will 0.5-1A Beat between , This is because there is a temperature sensor on the battery inside the mobile phone , We tested and found that iPhone The temperature of the mobile phone shell exceeds 30℃ after , The power will be reduced to 5W Even lower , Until the temperature is below 30℃ after , The power rises to 7.5W. The samsung S7 The external temperature of the mobile phone exceeds 40℃ about , The power will change .
Wireless charging is based on the principle of electromagnetic induction , As long as you work, you will inevitably get hot , High ambient temperature , The heat is not released , The phone will automatically reduce the charging power , Prevent safety accidents .
Wireless charging is so awesome , Why are mobile phone manufacturers still vigorously promoting it , Wireless charger manufacturers are also constantly laying out their own market , Even the electrical products around have added this function , What's the reason for this ？
That's because wireless charging is more convenient , Especially all the electrical appliances around me, such as ： Desk lamp 、 Desktop calendar 、 Bluetooth speakers 、FM When the radio can be charged , The convenience of this technology is reflected . Just let it go , It began to charge quietly , No matter how much it is filled or how little it is filled , It can be filled everywhere ： The table top of the restaurant can be filled with , When working, there is a vertical wireless charger , There is a power bank on the way , The bedside table can also be filled after sleeping .
This is the future of wireless charging ！
This article is from Shenzhen xuxinsheng Electronics Co., Ltd Wireless charger , Reprinted .