Wireless charging, sometimes referred to as wireless power transfer, utilizes electromagnetic
fields in order to transport power from one device that outputs power into a different device that will input the power in order to recharge its battery. Often times, the device outputting energy is called the transmitter,
while the device utilizing the energy to recharge is deemed the receiver. The most remarkable aspect of wireless charging is that this process can function without the use of a physical connection between the devices.
This allows users to be able to charge their devices without having to rely on a USB charging cable or available port space. In a world that is increasingly on the move both in industry, life, and at home, wireless charging is the future of maintaining battery life and connection to the technological world.
What is Wireless Charging?
Though wireless charging may seem like recent advancement, it has actually been being used for a variety of platforms for many years and is widely believed to have been discovered by Nikola Tesla in the late 1800’s. Despite the discovery of wireless power transfer (WPT) over a hundred years ago, it is only in recent years that the production of wireless charging products has reached a fever pitch. Some industries integrated wireless charging into their products years ago without most people realizing the technology they were utilizing. One of the most common household items people do not realize uses wireless charging technology is rechargeable electric toothbrushes. By harnessing wireless power transfer technology and implementing it into everyday uses that meet the technological needs of an advancing generation of electronics, many companies have been able to capitalize on a uanced utilization of familiar technology.
A Breakdown of How a Wireless Charging Pad Works：
Wireless charging utilizes electromagnetic fields in order to move power from one transmitting source into a specified receiving device to recharge the battery. As mentioned above, when attempting to understand how a wireless charging pad works, it is vital to keep in mind that the charging pad is a transmitter that is responsible for moving its charge into a receiver, such as a mobile device, in order for the receiver to recharge its battery. Wireless charging utilizes the principle of magnetic resonance to accomplish this transfer of power, sometimes referred to as Inductive Power Transfer (IPT). Inductive Power Transfer relies on coils to induce an electromagnetic field that is capable of transferring the electrical current between two objects without them needing to be physically connected. With this in mind, below are the steps that comprise the wireless charging process in order to offer a better understanding of how this technology functions.
Inductive Vs. Resonant Technology：
When discussing wireless charging technology, two terms often govern the discourse, those terms being inductive and resonant technology. From most perspectives, inductive and resonant technology exist in tandem. Inductive power transfer is the overriding principle that is foundational to achieving wireless charging. Inductive power transfer harnesses resonance in order to achieve the coupling between the transmitter and receiver coil, which is key to how the wireless connection can be attained. When the transmitter and receiver coil are coupled, both coils must resonate at the same frequency in order for the current to be established. However, recently there been a new term that emerged, known as resonant wireless charging.
The Benefits of Wireless Charging：
Wireless charging provides a number of benefits for consumers that have spurred its rapid gain in popularity. One of the main benefits of wireless charging is the lack of cables needed to be able to ensure your most important devices are always charged when you need them. Instead of fumbling around with a cord and making sure it is plugged into the right port correctly, you can rely on your wireless charging pad to ensure you can achieve the same charge without the fuss. In addition to just being easier, it is also safer to have less cords with active electrical currents in your home. Fire danger is a concern for those with many cords laying around their home and wireless charging can help eliminate the need for that anxiety because it does not require as many cables. Wireless charging also eliminates the need to keep buying new charging cables when they wear out. Devices that are heavily used, such as cell phones and laptops, often force users to continually replace their charging cable due to fraying, breaking, and the inability to connect properly.
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