Tesla has unveiled a groundbreaking wireless charging system for its upcoming CyberCab, showcasing impressive efficiency that challenges conventional wisdom about wireless power transfer.
In a Tesla released video, Tesla demonstrated the CyberCab’s wireless charging capabilities. At 35% battery capacity, system achieved a charging power of 25 kW, with an estimated 56 minutes to full charge. While this rate may not rival Supercharger speeds, it outperforms standard 380V home chargers, positioning itself as a viable solution for urban fleet operations.
The most striking aspect of Tesla’s claimed efficiency of over 90% for its wireless charging system. This figure significantly surpasses expectations set like Marques Brownlee, who suggested that 75% efficiency would be a “noble goal” for such technology.
Tesla’s achievements in wireless charging efficiency likely stem from its acquisition of Wiferion, a company known for its 93% efficient electromagnetic induction charging systems. This technology differs from the magnetic resonance approach used by competitors like WiTricity, which boasts up to 96% efficiency.
Elon weighed in on the efficiency debate, stating, “There is no meaningful efficiency difference between inductive and conductive charging if the system is designed right. There is always an inductor somewhere in the charge circuit!” This perspective highlights Tesla’s confidence in its engineering approach.
The high efficiency of Tesla’s wireless charging system could have far-reaching implications for urban mobility and autonomous vehicle fleets. By eliminating the need for physical connections, the CyberCab can seamlessly integrate charging into its routine operations, potentially reducing downtime and increasing overall fleet efficiency.
Moreover, the system’s performance challenges the perception that wireless charging is inherently less efficient than traditional conductive methods. With efficiencies comparable to home chargers when considering the entire power delivery process, wireless charging could become a viable option for a wider range of EV applications.
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