Edulogycal

Educating with Information and Technology

Trending

Sunday, February 25, 2018

How fast charging works. Main technology behind fast charging. Some examples of some fast charging standards. (Qualcomm quick charge, Samsung Adaptive Fast Charging, Apple fast charging, Huawei SuperCharge, OnePlus Dash Charge, Motorola TurboPower)


Introduction:

The rechargeable lithium-ion batteries when discharges, the chemical reaction produces electricity, and when the battery recharges, the chemical reactions absorb power. In non-rechargable batteries, chemical reactions in battery occur only once. 


How fast charging works:

Greater current(A) and higher voltages (V) charge batteries faster. That is the main technology behind fast charging.
The product of volts and amps are watts i,e volts (V) × amps (A) = watts (W).
The charge controller (IC) protects against dangerous spikes in current. lithium-ion controllers define the current (in amps) at which the battery charges by measuring the battery’s cell current and voltage, and then adjusting the current flowing. The amount of current the charge controller draws is generally dictated by the phone’s software.


Type of USB charger:

   USB 1.0
   USB 2.0
   USB 3.0
   USB 3.1

A typical USB 1.0 and 2.0 plug can deliver up to 5V/0.5A (2.5W).
USB 3.0 ports push 5V/0.9A (4.5W).
Sometimes USB 3.1 devices works by using USB Power Delivery (USB-PD). Because it can deliver maximum power output of 20V/5A (100W) some of devices. (in MacBook Pro and Google Chromebook Pixel).

Some fast charging standards

Qualcomm quick charge:

It is one of the most widely implemented charging standards. Quick Charge gives fast charging by upping the charging voltage, which in turn boosts the wattage. It built-in safety features prevent overheating and short circuiting. Qualcomm quick charge ackwards compatible with older versions of Quick Charge.
Quick Charge 3.0 increments or decrements using Intelligent Negotiation for Optimum Voltage (INOV) to identify the most efficient voltage at any giving point during charging. Quick Charge 3.0’s voltage range is 3.6V minimum and 20V maximum. Quick Charge 3.0 delivers about 50 percent capacity in half an hour. Recent Quick Charge 4+ can recharge smartphones to 50 percent in just 15 minutes. 

Samsung Adaptive Fast Charging:

Not available with all Samsung smartphones. It’s fully compatible with Exynos processors. Samsung’s Adaptive Fast Charging has a theoretical peak of 9V/2A (18W). In Galaxy S8 which has a 3,000mAh battery, took about two hours to fully recharge.

Apple fast charging:

The Apple uses USB-PD for fast charging. Inter-compatibility is its biggest advantage, USB-PD doesn’t require any special cables or wall adapters.
iPhone X, iPhone 8, and iPhone 8 Plus implement USB-PD, the same technology used by the iPad Pro, the 12-inch MacBook, Google’s Chromebook Pixel, and Lenovo’s X1 Carbon.
The iPhone 8, iPhone 8 Plus, and iPhone X can charge from 0 to 50 percent in 30 minutes using USB-PD, which gives about an hour of battery life. Fast charge will be stopped when the capacity is between 0 and 79 percent, or it stops when it reaches 80 percent.


Huawei SuperCharge:

Huawei is alsi compatible with USB-PD. SuperCharge, compatible wall adapters and car chargers support three charging modes — 5V/2A, 4.5V/5A, and 5V/4.5A (up to 22.5W). Adapters included with compatible smartphones in box. Charging speed is 90 percent charge after 60 minutes. Means it can fully charge battery approx in one hour.
SuperCharge use an in-charger chipset to regulate voltage, eliminating the need for heat producing in phone voltage transformation.

OnePlus Dash Charge:

One of the fastest charging standards. OnePlus Dash charge based on Oppo’s VOOC (Voltage Open Multi-Step Constant-Current Charging) system. Dash Charge operates at a peak of 5V/4A (20W).
and is a headline feature in the OnePlus 5T, OnePlus 5, OnePlus 3T, and OnePlus 3. OnePlus Dash Charge can charge battery 60 percent in 30 minutes. It also keeps phones cooler. Adapters included with compatible smartphones.

Motorola TurboPower:

It compatible with Quick Charge 2.0.
TurboPower adapters come in three flavors: TurboPower 15, TurboPower 25, and TurboPower 30. The fastest TurboPower 30, delivers 5V and 5.7A for that is 28.5W of power. And it built into all Motorola devices.
Motorola claims TurboPower 30 can deliver up to 15 hours of battery life in 15 minutes.

Thanks For Reading.

Don’t Forget To Leave Your Comments and Feedbacks & Do Like and Share This Post.

No comments:

Post a Comment