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Advantages of wireless power systems in car applications
Sep 21, 2018

With the use of embedded modems, telematics devices and wireless connectivity, more and more cars are beginning to have wireless networking capabilities. However, in-vehicle facilities such as sensors, cameras, and computing control units are still connected by complicated cable routing. The use of a wireless power system can greatly simplify cable usage, optimize automotive design, and enable more in-vehicle functions.

Fewer car cables

In-vehicle information processing equipment, sensors, and other types of in-vehicle instrumentation typically require two power cables and two data cables.

The use of the wireless power system will greatly reduce the cable required for the connection of the equipment inside the vehicle, and all the in-vehicle equipment can be connected by only one cable that has both data and power functions and runs through the vehicle body. The wireless transmission of electric energy mainly relies on resonant electromagnetic induction, which can transmit power and data information with a frequency between 50mW and 1 kW.

GM recently announced that it will provide wireless charging devices in its models to charge mobile devices in the car.

In addition to simplifying the use of cables, wireless power systems will bring other improvements, such as reduced material production and assembly costs, making possible more flexible and efficient automotive designs.

More flexible design

The single-vehicle cable system from wireless power will allow automakers to enjoy greater flexibility in designing vehicle body power facilities and body construction, and will enable more in-vehicle functions.

For example, with the support of the system, the door can be free from the obligation to support complicated cables, while the rear seat display does not have to be connected to the vehicle operating interface, and the movable position such as the front seat or the headrest can be moved more flexibly. In addition, in the case of a trailer service, a car equipped with a wireless power source no longer has to rely on a cable with a signal plug to connect to the trailer.

Possible challenge

There are some inevitable challenges in applying automotive wireless power. For example, it is necessary for a car manufacturer to modify some components and equipment of a car to make it suitable for a wireless power system, and this process may take several years.

Before wireless power is fully promoted, automakers may be able to try independent subsystems such as parking assist systems that are more suitable for wireless power connections.

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