Do Magnets Affect Wireless Charging

Do Magnets Affect Wireless Charging, After describing a high-level view of the power grid from an exemplary smartphone, we can now see how the wireless charging system integrates with it.

Wireless charging uses magnetic fields to transfer energy from the transmitter coil of the charger to the receiver coil of the smartphone, as shown in the following figure.

To enable this wireless power transfer, a number of “jobs” need to be performed on the power signal, all of which cause loss of power and generate heat. Consider the diagram below which describes the power conditioning and transmission path from the power source to the battery.

The leftmost block is connected by a cable to a power source. Each block loses energy in the form of heat, with the greatest losses occurring in the transmitting and receiving coils.

Apart from these steps, heat is generated in the contents of the phone and the charger itself. The following figure shows some of the main materials that heat up either directly due to the induction of eddy currents or indirectly due to contact with the material being heated.

Additionally, overheating of certain materials in a smartphone can have a detrimental effect on the performance and life of components such as the battery.

Do Magnets Affect Wireless Charging
Do Magnets Affect Wireless Charging

What is the effect of magnets on a smartphone?

Magnets do not have any special effect on the smartphone. However, this does not mean that they have no effect. Actually, they have. Also, some smartphones have many small magnets that perform important functions. For example, the Apple iPhone charging pad uses the fluctuating magnetic fields around it to charge the smartphone wirelessly.

Magnetic accessories are composed of magnets and magnetic materials. Iron, cobalt, nickel, and their alloys are magnetic materials. These substances can inadvertently rub against your smartphone and apply magnetic fields around the smartphone.

Evidence indicates that a magnet can affect a smartphone’s internal sensor, which operates on the Hall Effect to give the cardinal direction.

The experimenters found that bringing a magnet or magnetic material close to the smartphone causes a re-alignment of the magnetic domains within the phone and thus affects the compass reading.

If you increase the power of the magnet, this effect is amplified. Therefore, a strong magnet can magnetize smartphone parts made of magnetic materials, causing them to behave like a weak magnet.

If you want to locate it, for example, install a compass app like Google Maps, which determines your phone’s direction. You will also find that a strong magnet affects applications that are dependent on the compass application.

Do Magnets Affect Wireless Charging
Do Magnets Affect Wireless Charging

Wireless charging standard

Qi is the most popular standard supported by almost all phones. However, it has a downside. For everything to work as it should, you have to align the phone with the coil directly. That’s why there is more than one coil inside the cargo bed. The maximum charging distance is 4cm and the maximum power is 120W.

PMA uses the same principle as QE but operates at a different current frequency within the coil. Fewer phones support PWA, but there are some models that work with both standards. An example of a PWA charger in use is inside a Starbucks coffee shop, where tables have been repurposed.

There are other wireless charging standards, but they are not relevant to phones and are designed for use in industrial machines, electric vehicles, and other equipment.

Do Magnets Affect Wireless Charging
Do Magnets Affect Wireless Charging

Will wireless charging magnets get in the way of wireless charging?

Not! Although wireless charging uses magnetic fields to transfer electricity, wireless charging magnets are arranged and magnetized in a special way. So that your phone and charger can be firmly connected to each other for fast charging.

Magnetic steering of a wireless magnet.

Wireless charging magnets differ from normal NdFeB magnets in that they contain a dipole magnet. The wireless charging magnets for phone cases are arranged in a ring shape with 36 dipole magnets and are attached to the Mylar Flex. A neat array for a wireless charger attached to an iron plate contains 32 or 36 dipole magnets.

Do Magnets Affect Wireless Charging
Do Magnets Affect Wireless Charging

Do wireless chargers work with phone cases?

Yes, as long as your phone case is equipped with a wireless charging magnet. We use N50H material to produce wireless charging magnetic products for phone cases. It is almost the highest grade on the market and has a maximum working temperature of 120 degrees, ensuring sufficient strength and long-term stability in use. Do Magnets Affect Wireless Charging.

Apex can magnets

  • In the tech industry, you can use wireless charging to charge phones, watches, tablets, laptops, and more.
  • In the automotive industry, charging pads can be used to charge electric vehicles.
  • In dentistry, wireless chargers can be used to charge toothbrushes and other devices.
  • The charging pads can be installed on factory floors to charge mobile robots in factories. For more information, click here.
  • In retail, wireless charging stations can be integrated into stores to give customers a place to charge their devices while shopping.
  • In general, wireless charging can be integrated into the workplace by placing a wireless charging station on the employee’s desk.
Do Magnets Affect Wireless Charging
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About Author
An engineer and MBA, who is a technology and a gadget freak. I write about smart home solutions and gadgets like all wireless devices, technology brands like Apple. Love to follow the latest trends in the technology space and write about latest developments.