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Email:sales19@schitec.comShenzhen Shenchuang Hi-Tech Electronics Co.,Ltd

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Shenzhen Shenchuang Hi-Tech Electronics Co.,Ltd

Add:5th Floor, Shabian Chengdong Industry Area, Gushu, Bao'an District, Shenzhen, China

Name: Sunny Zhou

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E-mail: sales19@schitec.com

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www.chargersuppliers.com

Quick Charge Charger Common Sense


First, the difference between the power adapter charger manufacturers fast charge and slow charge


The charging current of fast charging is large, so the charging time will be much shorter; while the charging current of slow charging is small, so the charging time is long.

For example, if you buy a Ni-MH charger with an output current of 1.5A, this is a fast charge because currently NiMH batteries number 5 are mostly around 2500mAh (2.5Ah) and are charged with 1.5A. , about two hours or more full; if you buy the charger above the output current marked 100mA or 200mA, it is slow charge, the same charge 2500mAh battery about twenty or thirty hours, and may not turn after full Lamp (the current is too small to be detected).

As for the damage to the battery due to fast charging, there is a theoretical problem because the large-current charging and heating generate a large amount of energy, and it is possible to accelerate the life of the chemical composition of the battery. However, in order to save efficiency, it is generally possible to ignore this effect (battery cycle is generally 300-500 times, can be used for so long has been very energy-saving emission reduction).


12W Series Daily PSE Power Adapter

Second, fast charge charging common sense


Common sense 1

Fast charging technology has different branches. Currently, the market is mainly divided into high pressure fast charge and low pressure fast charge.

Representatives of high-pressure fast charge mainly include Qualcomm's QC and MediaTek's PEP. Generally, they support 9V/2A or 12V/2A. Later, there are a lot of vests, such as Samsung FastCharge, ASUS mobile phone's fast charging, in fact, Qualcomm QC's vest; and Meizu's mCharge is MediaTek PEP's vest.

The feature of this kind of scheme is that the existing Micro USB is compatible with the data line, and only need to add a specific power management and identification chip, but the disadvantage is that the heat is higher when the full charge is fast and fast.

Representatives of low-voltage fast charge include OPPO's VOOC, Huawei's SuperCharge and Magic Power. Among them, OPPO VOOC and SuperCharge support 5V/5A, while Magic Power supports 5V/8A. And a DASH fast charging technology that supports 5V/4A is actually an OPPO VOOC license, and it is essentially a type of VOOC.


Common sense 2

Compared with high-pressure fast charging, low-voltage fast charging is more complicated and the cost is higher.

The low voltage fast charge scheme needs to carry larger input/output currents, so the USB interface and charging equipment need to be modified. The use of specially enhanced chargers, data cables, and mobile phone internal charging modules is simply a hardware transformation from beginning to end. Although the cost is high, but the power is greatly enhanced while the heat can do excellent control, and while playing while playing It will not affect the charging efficiency of the mobile phone.



Common sense 3

The fast charge is related to the charger, the data cable and the internal charging module of the mobile phone. Among them, the internal charge module of the charger and the mobile phone accounts for the largest proportion, while the influence of the data line is slightly smaller but it is also very important.

Supporting low-voltage fast-charged mobile phones, because of the high threshold for fast-charging devices, most of them require the use of original accessories to achieve the desired fast-charge effect. Data lines need to support large currents up to 5A, and there are almost no third-party devices on the market. VOOC also has a built-in identification IC that can only use its own fast-charged data cable.

For mobile phones that support high-voltage fast charging, data lines that can basically reach 2A current can meet the needs of fast charging, but the requirements for charging heads are relatively high, so everyone has been inspired to start their own private identification protocol. 

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