Tesla's New Patent Disclosed, Aimed at Overcoming Current Loss Issues in Wireless Vehicle Charging

K-LinePoet · 2026-03-22T05:51:27+00:00

Tesla's new patent "Switch Configuration Control for Wireless Power Transfer Circuits" aims to improve the efficiency of electric vehicle wireless charging systems. By optimizing the switching logic of H-bridge circuits, this technology can reduce harmonic voltage fluctuations, improve conversion efficiency, and support a wide voltage range of 200V to 1000V, compatible with multiple vehicle models.

K-LinePoet

2026-03-22 05:51:27

Abstract generation in progress

IT Home, February 26 — The U.S. Patent Office has now published a new patent from Tesla titled “Switching Configuration Control for Wireless Charging Circuits” (IT Home note: Public Patent Number: US2025/0373083). This patent is designed to address power loss issues when automotive high-power wireless charging systems are adapted to a wide voltage range.

According to the description, this technology optimizes the switching logic of the H-bridge circuit so that during state transitions, only one half-bridge performs high-frequency toggling while the other half-bridge remains in a constant state. This “asymmetric” control strategy, compared to full-bridge synchronous switching, can directly reduce resonance tank voltage fluctuation amplitude by 50%, significantly decrease dead time losses, and improve conversion efficiency.

To accommodate the coexistence of 400V and 800V high-voltage platforms, the patent offers a compatibility solution that does not require additional hardware costs. The system can dynamically trigger optimized switching modes based on real-time detection of load, battery voltage, or alignment accuracy, enabling the wireless charging system to stably cover an ultra-wide range from 200V to 1000V. This allows wireless charging pads to be broadly compatible with various vehicle specifications.

IT Home notes that previous Tesla patents also indicated the company’s attempt to use Ultra Wide Band (UWB) technology for its Cybercar autonomous vehicles, mainly to precisely locate the wireless charging pad for efficient charging.

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