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Power behind the passionate devices

 



What is the wireless charging of a mobile phone and how it's working on ?


     Wireless charging, also known as inductive charging, allows you to charge a mobile phone without the need for physical cables. Here's how it works:


1.Transmitter Coil: Inside the wireless charger, there is a coil of wire called the transmitter coil. When you power up the charger, it sends an electric current through this coil¹.


2. Electromagnetic Field: The electric current in the transmitter coil creates an electromagnetic field around the charger¹.


3.Receiver Coil: Your mobile phone has a corresponding coil inside it, known as the receiver coil. When you place your phone on the wireless charger, the electromagnetic field induces an electric current in the receiver coil¹.


4. Conversion to Direct Current:


This induced current in the phone's coil is then converted into direct current (DC), which is used to charge the phone's battery.


There are two main types of wireless charging:


Inductive Charging: Requires direct contact between the phone and the charger. The phone must be placed on a charging pad or dock.


Resonant Charging: Allows for a small amount of distance between the phone and the charger. The phone doesn't need to be directly touching the charger but must be close to it.


The standard for wireless charging is called Qi (pronounced "chee"), and it has been adopted by most major device manufacturers¹. While wireless charging is convenient, it is generally slower than wired charging and the efficiency can decrease with distance between the phone and the charger².


Source: Conversation with Bing, 5/12/2024


(1) How Does Wireless Charging Work? All Your Questions Answered


(2) How Does Wireless Charging Work? Everything You Need to Know


(3) Wireless charging FAQ: What it is and how to use it


 

(4) How to Add Wireless Charging to Any Phone - How-To Geek 


(5) Everything you need to know about wireless phone charging | CMD - CMD Ltd.



How does electromagnetic current works as DC current for specific negative and positive terminal of a Lithium ? 


The process of using electromagnetic current as direct current (DC) for charging a lithium-ion battery involves several steps. Here's a simplified explanation:


1. Electromagnetic Induction:


When an alternating current (AC) flows through the transmitter coil in the wireless charger, it creates a changing magnetic field. This field induces a voltage across the receiver coil in the mobile phone through a process called electromagnetic induction¹.


2. Rectification:


The induced voltage in the receiver coil is AC, which needs to be converted to DC to charge the battery. This is done using a rectifier, which is a circuit that allows current to flow in only one direction, thus converting AC to DC.


3. Voltage Regulation: The DC voltage from the rectifier may not be at the correct level to charge the battery safely. Therefore, a voltage regulator adjusts this voltage to match the requirements of the battery¹.


4. Battery Charging: The regulated DC current is then used to charge the lithium-ion battery. Inside the battery, the movement of lithium ions between the anode and cathode during charging and discharging generates free electrons in the anode. These electrons create a charge at the positive current collector. The electrical current then flows from the positive current collector through the device being powered to the negative current collector. A separator within the battery blocks the flow of electrons inside the battery, forcing them to go through the external circuit³⁴.


The positive and negative terminals of a lithium-ion battery are connected to the


cathode and anode, respectively. During the charging process, lithium ions move from the cathode to the anode. The flow of electrons through the external circuit from the anode to the cathode provides the power to the device while charging.


The DC motor in a device can also illustrate the use of electromagnetic current. In a DC motor, the electric current supplied by the battery passes through a coil of wire between two magnetic poles. The interaction between the magnetic field created by the current and the permanent magnets in the motor generates motion⁵.


In summary, electromagnetic current is converted to DC current through induction, rectification, and regulation before being used to charge a lithium-ion battery, with the flow of electrons providing power to the device.


Source: Conversation with Bing, 5/12/2024

(1) Electromagnetism Basics | Basic Direct Current (DC) Theory | Textbook


(2) How Lithium-ion Batteries Work | Department of Energy


(3) Lithium-ion batteries explained


(4) How Does A DC Motor Work? - News about Energy Storage, Batteries


(5) DC electromagnet strength: voltage or current?



(6) Getty Images



Which mobile company first offer wireless charging options? 


The first mobile company to offer wireless charging as a built-in option was Nokia with the Lumia 920, which was released in 2012. This phone supported the Qi wireless charging standard and marked the beginning of the integration of wireless charging technology into smartphones. Following Nokia, other companies like Samsung also started to include wireless charging in their devices, with models like the Galaxy S3 being part of the early group of smartphones to offer this feature³.


Source: Conversation with Bing, 5/12/2024



(2) Which phones have wireless charging?

Mobiles.co.uk - Community


(3) The History and Future of Wireless Charging Technology


(4) History of mobile phones - Wikipedia


(5) Wireless Charging Guide: What is it and which phones are ... - Mobile Fun




Which one is more consumer friendly both of two types of wire and wireless charging? 



When it comes to consumer friendliness between wired and wireless charging, it largely depends on the user's preferences and lifestyle. Here are some points to consider:


-Wired Charging:

  Faster Charging Speeds: Wired charging is typically faster than wireless charging, making it a better choice for those who prioritize quick power-ups¹.



  Energy Efficiency: It is more energy-efficient, as less power is lost during the charging process¹.



  -Universal Compatibility: Wired chargers often use universal standards like USB, which can charge a variety of devices².


-Wireless Charging:

  -Convenience: Wireless charging offers the ease of just placing your device on a pad or stand without fiddling with cables².



  Aesthetics: It provides a cleaner look without the clutter of wires, appealing to those who value aesthetics².



  Device Safety: Reduces wear and tear on the device's charging port since there's no need to repeatedly plug and unplug a cable².


Ultimately, wireless charging is seen as more consumer-friendly for its convenience and simplicity, especially for those who are not in a hurry to charge their devices and appreciate a cable-free experience³⁴. However, wired charging remains the go-to for faster and more efficient charging, particularly for users who need their devices ready to go in a short amount of time¹². It really comes down to personal preference and which factors are more important to the individual user.


Source: Conversation with Bing, 5/12/2024

(1) Wireless vs. Wired Charging: Which Is Better for Battery Life


(2) Wireless Charging vs Wired: Which Method Suits You Best?


(3) Wired Charging vs. Wireless Charging: Which Is Better? - Mobilebeat


(4) Wireless Charging vs. Wired: Which Is Better? - Tech Review Advisor



Which type of batteries will lead the future mobile technology? 



The future of mobile technology is likely to be led by advancements in battery technology that aim to provide longer life, faster charging, and higher energy density. Here are some key developments that are expected to shape the future of mobile batteries:


-Solid-State Batteries: These batteries replace the liquid electrolyte with a solid one, which can potentially offer greater energy density, faster charging times, and improved safety².


-Lithium-Silicon Batteries: Silicon anodes are being researched as a replacement for graphite in lithium-ion batteries, which could hold more energy and extend battery life⁴.


Lithium-Oxygen (Li-Air) Batteries: These have the potential to offer five times the energy density of current lithium-ion batteries, which could significantly increase battery life⁵.


Dual-Cell Batteries: Some manufacturers are using dual-cell batteries to allow for faster charging and greater flexibility in design¹.


Advanced Charging Technologies: Innovations in charging technology, such as ultra-fast charging that can recharge a smartphone in less than 40 minutes, are also on the horizon³.


Alternative Chemistries: Research is ongoing into alternative materials and chemistries that could reduce reliance on scarce resources like cobalt and lithium, and improve battery performance².


While it's difficult to predict exactly which type of battery will dominate, it's clear that the focus is on creating batteries that are more powerful, efficient, and environmentally friendly. The race to develop these new technologies is highly competitive, and the next few years may see significant breakthroughs that could revolutionize mobile device usage¹²³⁴⁵.


Source: Conversation with Bing, 5/12/2024

(1) What’s next for batteries in 2023 | MIT Technology Review


(2) The past, present and future of smartphone batteries


(3) Future smartphone batteries could last five times as long


(4) Smartphone battery tech: what could the next 10 years bring?


(5) Smartphone makers charge ahead to make better batteries - Tech Xplore




Logical value of Uranium battery for mobile technology 

 


The concept of using uranium or other radioactive materials for batteries in mobile technology is intriguing due to the long-lasting power they could potentially provide. However, there are several logical considerations and challenges:


1. Safety: The primary concern with using radioactive materials like uranium is safety. Ensuring that the radiation does not pose a health risk to users or the environment is paramount¹.


2.Power Output: Current prototypes of nuclear batteries, like the Chinese-made BV100, generate very low power output (100 microwatts), which is insufficient for powering smartphones or other mobile devices¹.


3. Size and Weight: While advancements have been made to reduce the size of nuclear batteries, they must be small and light enough to be practical for mobile technology without adding significant bulk¹.


4. Regulation and Approval: There would be significant regulatory hurdles to overcome before such batteries could be approved for consumer use, given the potential risks associated with radioactive materials¹.


5. Public Perception: The use of radioactive materials in everyday consumer products may face resistance due to public concerns over radiation exposure¹.


6. Cost: The production and disposal costs of radioactive batteries could be higher than traditional batteries, affecting their market viability¹.


7.Environmental Impact: The long-term environmental impact of disposing of radioactive batteries would need to be carefully considered¹.


While the idea of a battery that could last for decades without recharging is appealing, the current state of technology suggests that uranium or nuclear batteries are not yet a viable option for mobile technology. Instead, they are more suited for applications that require low power over a long period, such as pacemakers or space missions¹². For now, advancements in lithium-based and solid-state batteries are more likely to lead the way in mobile technology².


Source: Conversation with Bing, 5/12/2024

(1) Tiny Chinese-made BV100 radioactive battery can last 50 years — and it


(2) A tiny radioactive battery could keep your future phone ... - TechRadar


(3) China Develops Nuclear Batteries to Keep Your Smartphone ... - Beebom


(4) Scientists turn nuclear waste into “diamond” batteries that can last





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