Today we are going to talk about fast charging in mobiles phones, tablets and laptops.
Before going to proceed to Fast Charging. Let’s discuss about How batteries recharge?
Li-ion batteries are the most common type of rechargeable batteries used in mobile phones, laptops, tablets, MP3 players etc.
Batteries has 3 main components
- Cathode (+ Electrode or metallic rod)
- Anode (- Electrode)
- Electrolyte
In non-rechargeable, Chemical reactions happen only once and can’t be reversed. But this is not the case with rechargeable batteries like Li-ion.
Positive electrode Li-ion is made of Lithium Cobalt Oxide (LiCoO2) or lithium iron phosphate (LiFePO4) is newer batteries. Negative electrode is made of carbon (graphite) and electrolyte varies from one type of battery to another.
When chemical reaction occurs, electrons generate at electrodes and flow through the circuit. But in case of recharging reverse process occurs and the battery absorbs the energy providing by external circuit.
Basically what happens in fast charging is, the charging circuit of a device pushes extra current and voltage to the battery which makes it to charge fast in comparison to the normal charging rate at normal current and voltage levels.
To control everything regarding charging like safety issues, there is a Charge Controller IC. This Controller chip is the main IC that regulates the flow of current in and out of the battery at different voltage levels. Here are some most famous fast charging standards name by the manufacturing companies.
- Samsung Adaptive Fast Charging
- Qualcomm Quick Charge
- One Plus Dash Charge
- Apple Fast Charging
- Motorola Turbo Power
- MediaTek Pump Express
- Huawei Super Charge
- Meizu Super mCharge
- Oppo Vooc
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