Could rear-motor SiC modules enable EV6 1,200V faster charging?

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Rear-Motor SiC Modules Could Enable 1,200V Faster Charging for the Kia EV6

The Kia EV6 may be poised for a significant upgrade in charging capabilities, with the potential to transition to a 1,200V architecture. This shift is facilitated by the possibility of incorporating new silicon carbide (SiC) power modules into the vehicle's rear motor. Such an advancement could lead to substantially faster charging speeds compared to the current 800V system.
Potential for Enhanced Charging Speeds

The integration of SiC power modules into the rear motor presents a distinct possibility for Kia to elevate the EV6's electrical architecture to 1,200V. This upgrade is a key enabler for achieving even faster charging rates. For context, the current system operates on an 800V architecture, and the introduction of SiC technology has already demonstrated considerable benefits in other configurations.
Demonstrated Performance Improvements

When SiC power modules were implemented in earlier configurations for the rear motor, a 5 per cent improvement in range was observed. Crucially, this switch also resulted in charging speeds increasing by up to three times when compared to a 400V silicon module. This data suggests a strong precedent for substantial performance gains if similar technology is applied to enable a 1,200V system.
Impact on Range and Charging Metrics

Applying the observed 5 per cent range improvement metric to the EV6 GT-Line AWD model, which currently has a range of 508km, could extend its capability to approximately 533km. Furthermore, charging speeds, which currently peak at 235kW, could be significantly enhanced. This would allow drivers to more effectively utilise high-powered DC fast-charging stations, such as Gentari's 350kW facility at X Park Sunway Serene.
Ongoing Technological Advancements

The semiconductor manufacturer STMicroelectronics supplies the SiC power modules. Their third-generation STPower SiC MOSFETs, housed in the Acepack Drive package, are designed to support up to 1,200V and feature direct liquid cooling and pin-fin arrays for heat dissipation. Production of these advanced modules is expected to increase as a new integrated SiC substrate manufacturing facility in Catania, Italy, becomes operational.

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Could rear-motor SiC modules enable EV6 1,200V faster charging?

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