Wireless Power Supply: Standards Are Mostly Unified, Related Technology Is Under Development

Wireless power transfer technology that supplies power to BEVs is highly compatible with autonomous driving technology and offers convenient charging. There are high expectations for its widespread popularization. Regarding the standardization of wireless power supply, the circular coil system developed by WiTricity (USA) competed with the DD coil system developed by Qualcomm Halo under Qualcomm (USA). Since WiQuality decided to acquire Qualcomm Halo in February 2019, Qualcomm Halo’s technology will be integrated into a circular coil system in the future. As for mass-produced PHEVs, Daimler is the first automaker to offer wireless power transfer as an option on the 2018 model of the Mercedes-Benz S550e. In addition, BMW developed BMW Wireless Charging using WiTricity's patented technology and started production in July 2018. The technology is provided as a lease option for the BMW 530e iPerformance. It can be fully charged in about 3.5 hours.

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