Applicable For EVs And Homes, Infineon And Delta’s Bidirectional Charging

Taiwanese-based global provider of power and energy management solutions, Infineon Technologies AG and Delta Electronics, have developed a new charging system for EVs and homes.

Innovatively, it is a new bidirectional charging system that integrates three factors into one. Solar, energy storage and charging of electric vehicles.

Thanks to bidirectional inverters, the electric car is not only charged, but can also be used as a buffer storage or as a household emergency backup power. 

Notably, a single-family home consumes about an average of between 10-kWh to 15-kWh of energy every day. 

Therefore, with the new system, a fully charged car battery that has a capacity of 30-kWh to 100-kWh could theoretically bridge a few days as an emergency power solution. 

In detail, the new system provided by Delta allows a maximum continuous current of 34 A and achieves peak efficiencies of more than 97.5 percent. 

Meanwhile, to increase power density, energy-efficient power semiconductors made of silicon carbide (SiC) from Infineon are used. 

Unlike silicon-based semiconductors, this particular SiC reduces energy losses when converting current by around half. The size of charging stations can also be reduced by about 30 percent.

Additionally, with SiC, photovoltaic systems become more powerful, charging times at fast-charging stations and wall boxes are shorter, and the range of EVs increases five to ten percent higher.

Then, by the end of this decade, more than half of all newly registered vehicles are to be partially or fully electric, but green mobility can only be achieved if both vehicles and energy are carbon neutral. 

One key therefore lies in the use of wind and solar energy. However, the fluctuating availability of these energy sources must first be balanced by electrical storage systems to stabilize the grids.

That said, moving forward, the bidirectional energy flows could also be used to realize new vehicle-to-home (V2H) and vehicle-to-grid (V2G) solutions.