Innolectric 22kW On-Board EV Charger Uses STMicro SiC Devices

January 13, 2020 by Paul Shepard

Innolectric has completed the development of its 22kW on-board electric vehicle charger with silicon carbide technology. The final preparations took place until the end of 2019, and series delivery will start in the 2nd quarter of 2020.

The innolectric on-board charger offers both ac and dc charging for electrified vehicles, commercial vehicles and machines. Thanks to integrated charging communication in accordance with all current international standards such as IEC 61851, DIN SPEC 70121 and ISO 15118, the innolectric on-board charger can be used safely and flexibly worldwide, even in 50Hz and 60Hz network topologies.

The on-board charger provides 22kW charging power in ac mode and, as a one-device solution, handles the entire charging management including the necessary communication with the charging infrastructure for ac and dc charging.

Two different voltage variants available

Depending on the voltage level of the battery and the application, the innolectric on-board charger will be available in two different versions. The OBC42 is designed for a voltage level of 400V (220V to 510V) with an output of up to 22kW. The charging component achieves a minimum efficiency of over 94% between 2kW and 22kW. Maximum efficiency is over 96%.

In addition to the ac charging function with integrated PWM communication at up to 22kW, the innolectric on-board charger also supports the dc charging process with international standard-compliant communication according to DIN SPEC 70121 and ISO 15118.

A further variant will be the OBC82, which is designed for a voltage level of 800V (400V to 850V) at a power of 22kW. The charging power can easily be increased by connecting several innolectric on-board chargers in parallel.

State-of-the-art technology increases efficiency

As part of the development of the innolectric on-board charger, the Bochum-based company is working closely with STMicroelectronics in the field of silicon carbide technology.

Tim Karcher, CEO of innolectric AG, focused on the start of series production: "After having invested a lot of time, expertise and work in the development of the innolectric on-board charger, I am pleased that with the start of series production the supply to our customers now begins. The product is not a compromise, but a solid solution for the commercial vehicle and machine sector thanks to its high efficiency and performance. In addition, we are proud that our customers appreciate the complete loading solution from us, especially the easy and fast integration."