PNIPU: Wireless charger for drones, electric cars and robots

Main articles:

• Electric fuelling (electric charging stations, EZD)
• Chargers (Russian market)
• Chargers (global market)

2021: Wireless power transfer to increase the duration of operation from one charge

On November 25, 2021, the Perm National Research Polytechnic University (PNIPU) company announced that its employees had developed a prototype platform that would provide wireless power transmission for "drones," electric vehicles and robots. The device will significantly increase the duration of their operation from one charge.

Platform Prototype Testing

"Wireless energy transfer technologies are constantly developing, such" chargings"are inexpensive and quite efficient. But these standards are designed for low voltages and are mainly suitable for charging mobile devices. We have proposed a development that will help increase the duration of work, drones robots and electric vehicles, " says inventor, 3rd year student of the Department of General Scientific Disciplines of the Lysvensky branch of Perm Polytechnic Sergey Sterlyazhnikov.

In many areas, "drones" are used to monitor objects and other targets, which saves financial and temporary resources. But drone flights are limited, since one charge is enough for 20 minutes, taking into account photography. Recharging UAVs on special platforms with wireless power transmission systems will be able to significantly increase their operating time, researchers from Perm Polytechnic say. At the end of November 2021, in their opinion, there are practically no analogues on the market that would provide "power" to the batteries without returning to humans.

FSFR2100 chip block diagram

Researchers have developed a device for wireless power transmission based on the FSFR2100 chip. It is distinguished by high power and a large number of protections. Developers managed to simplify the design, increase the performance and reliability of the device. The power of "charging" without using a radiator reaches 200 W, and with a radiator - 450 W. It can work at temperatures from -40 to + 130 degrees .

Transmitting and Receiving Transmitters

"Our development consists of two parts: a transmitter and a receiver. The receiver is assembled on the basis of a chip that converts direct current to alternating current at a frequency of 150 kHz. Then voltage is transmitted to primary winding of air transformer. The voltage on the receiver winding is then transferred from the primary winding to the secondary winding, rectified, stabilized and supplied to the BMS controller. The battery of the connected device can be charged through it, - explains the inventor.

In addition, the researchers developed an LLC resonance transmitter that will provide charging for drones and robots. The technology can be used to "power" electric vehicles, as well as in other areas where wireless chargers are used.

According to the approximate calculations of the developers, the cost of a set of a transmitter and a receiver will be no more than 8 thousand rubles. It can be built into the chassis necessary for the customer.