Mobility is a central part of the work environment today. We’ve become dependent on several devices to keep us connected to our daily routine. Increased data bundles and access to omnipresent Wi-Fi have broadly resolved the connectivity issues. However, usage still depends on keeping these power-hungry devices charged up.
Wireless charging has the potential to transform our reliance on plug sockets thus enabling the devices to be constantly topped up with power in almost any location. It’s also making in-roads in the healthcare, automotive, and manufacturing industries especially with IoT devices to get power many feet away from the charger.
Challenges of Wireless Charging
The primary limitation of wireless technology today is that every charger needs its own unique power supply. Consumers are facing a dilemma of carrying a specific wireless charging device or simply carrying a wired charger. The most popular and common wireless technology used now relies on the electromagnetic field between two copper coils.
Major technologies that are used in wireless charging pads are tightly coupled electromagnetic inductive charging and electromagnetic resonant charging that can transmit the charge to few centimeters. Another one is an uncoupled radio frequency (RF) wireless charging that can provide charging capability at a distance of a few feet.
How does wireless charging work?
A magnetic loop antenna is used to create an oscillating magnetic field, which creates a current in one or more receiver antennas. Appropriate capacitance is added to make the loops resonate at the same frequency, which in turn increases the amount of induced current in the receivers. This is called resonant inductive charging or magnetic resonance.
It enables power transmission to slightly higher distances between transmitter and receiver and increases efficiency. Coil size also affects the distance of power transfer. The bigger the coil, or the more coils there are, the greater the distance a charge can travel.
Necessary Features in a Wireless Charging
The major components that are necessary for wireless charging devices are an LED light indicator, non-slip pad surface, transmitter coil, fanless design for quiet operation, wireless charging chipset to control the flow of electricity, thermal protection sensor, and most importantly a foreign object detection circuit to prevent conductive materials from receiving power from the charger.
The electromagnetic resonant technology allows power transfer at certain distances away from a charging pad. This could allow the electric cars to charge just by parking on top of a large charging pad. Offices could transform as employee’s laptops and devices wouldn’t be tied to proximity to a plug or power source.
Wireless charging market size exceeded $ 11 Bn. in 2019 and is set to grow at 14.5% CAGR between 2020 and 2026. The rise in global sales of wearable devices, high-end smartphones, Industry 4.0 trends, and the automation of production, packaging, and assembly systems in industrial settings are driving the deployment of wireless charging.
Backed by 40 Years of Expertise
We contribute our 40 years of design and manufacturing expertise spanning multiple diverse markets, and we look forward to discussing how we can deliver world-class products for OEMs across the globe. Syrma has always stayed as a thought leader in the space of innovation and has shown its expertise in the design and manufacturing of Smart power electronic devices for industrial and consumer segments.
Our team also has decades of expertise in manufacturing custom magnetic components like transformers, inductors, chokes for power electronics. We foster growth opportunities within India through our strong technology incubation ecosystem. We also assist global OEMs seeking to enter the Indian market by leveraging the local supply chain and favorable operating environments for cost reductions.
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