INDUCTIVE CHARGING

Wireless EV charging systems take advantage of the principle of electromagnetic induction to transmit electrical power through the air as a magnetic field. Inductive charging, also referred to as wireless inductive charging, involves the use of a transmitter pad located on, for example, a garage floor. The transmitter pad is connected to a dedicated circuit (e.g., a wall charger as in current approaches). In current wireless inductive charging systems, a receiver pad is installed on the bottom of the vehicle.

THE QKOIL APPROACH

A critical aspect of EV wireless charging systems is the magnetic coupling stage and its configuration for power electronics, efficiency, and transferrable power.  Conventional wireless charging approaches for electric vehicles include the use of a secondary coil attached to the bottom side of the EV and the primary coil placed on the ground.  While this arrangement promotes the necessary flux between the two coils, the gap between the coils can affect energy transfer efficiency.  The QKOIL approach, on the hand, can monitor energy transfer and adjust the gap based on real-time feedback from the battery management system (BMS). In the illustration shown below, the receiving coil may be installed in or on the surface of the EV (e.g., the roof, frunk, etc).

BIDIRECTIONAL CHARGING

Wireless charging of electric vehicles can be achieved with inductive coupling, which involves the transfer of power magnetically rather than by direct electrical contact.  The QKOIL system can also provide for bidirectional inductive charging through the use of a simple circuit that reduces the number of switches and diodes for the inductive charging system, and which regulates current flow in the battery during the charging and discharging phase. An example of a bidirectional inductively coupled battery charging system can involve the use of a fuzzy logic approach.

The Power of Bidirectional Charging with QKOIL Wireless EV Charging

Bidirectional charging is revolutionizing how we think about electric vehicles and energy management, and the QKOIL wireless EV charging system takes this innovation to new heights. With its unique above-the-vehicle design, QKOIL not only simplifies charging but also enables energy to flow both to and from the vehicle, unlocking a wide range of benefits for users, fleet operators, and energy networks alike.

One of the standout features of QKOIL’s bidirectional charging capability is its integration with the grid through Vehicle-to-Grid (V2G) technology. This allows EVs to act as energy storage units, discharging power back to the grid during peak demand periods. By stabilizing the grid and supporting renewable energy sources like solar and wind, QKOIL helps create a more sustainable and resilient energy system.

Beyond grid applications, QKOIL empowers EVs to become backup power sources for homes and businesses. In the event of an outage, Vehicle-to-Home (V2H) functionality ensures that essential devices and systems remain powered, providing peace of mind and energy independence. The system also supports cost-saving strategies by enabling users to charge their vehicles during off-peak hours and discharge energy back to their homes or the grid during peak times, maximizing savings on energy bills.

Efficiency is at the heart of the QKOIL system. The above-the-vehicle charging design optimizes energy transfer, ensuring minimal losses while eliminating the need for cumbersome plugs and cables. Coupled with intelligent energy management, the system can seamlessly prioritize charging or discharging based on real-time energy demand, vehicle use schedules, or grid requirements.

Fleet operators, in particular, stand to benefit from QKOIL’s bidirectional capabilities. By sharing energy among vehicles within a fleet, operators can reduce downtime and maintain operations even during grid outages. This level of autonomy not only cuts costs but also enhances operational reliability.

From an environmental perspective, QKOIL’s bidirectional charging contributes to lower greenhouse gas emissions by reducing reliance on fossil-fuel-powered plants. By facilitating the use of renewable energy and balancing grid demand, the system aligns with global efforts to combat climate change.

Finally, QKOIL’s adaptability extends to microgrid applications, where electric vehicles equipped with bidirectional charging can serve as mobile energy hubs. This flexibility allows localized energy management, ensuring that power is distributed where it’s needed most.

With QKOIL, wireless charging is no longer just about convenience—it’s about transforming EVs into key players in the energy ecosystem. By combining cutting-edge wireless technology with bidirectional energy flow, QKOIL paves the way for a smarter, more sustainable energy future.