Huawei Granted US Patent for Wireless Charging Device

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 17th, 2026

Detected March 23rd, 2026

Summary

The United States Patent and Trademark Office (USPTO) has granted Huawei Technologies Co., Ltd. a patent for a wireless charging device. The patent, US12580421B2, covers a rectifier and inverter system designed to improve the dynamic range of output voltage in wireless charging applications.

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What changed

The USPTO has granted Huawei Technologies Co., Ltd. patent US12580421B2 for a wireless charging device, rectifier, and inverter. The patent details a signal conversion unit and a switchable capacitor unit that allows for flexible rectification modes, aiming to provide a large variable dynamic range for the rectifier's output voltage. This grant signifies the official recognition of Huawei's innovation in wireless power transfer technology.

This patent grant is primarily an intellectual property event and does not impose new regulatory obligations on businesses. However, it may inform competitors and technology developers about Huawei's patented technologies in the wireless charging space. Companies operating in this sector should be aware of this patent when developing or licensing related technologies to avoid potential infringement.

Source document (simplified)

← USPTO Patent Grants

Rectifier, inverter, and wireless charging device

Grant US12580421B2 Kind: B2 Mar 17, 2026

Assignee

HUAWEI TECHNOLOGIES CO., LTD.

Inventors

Zhangrong Hu, Wei Wei

Abstract

This application provides a rectifier, an inverter, and a wireless charging device. The rectifier includes a signal conversion unit and a switchable capacitor unit that are mutually coupled. The switchable capacitor unit is configured to switch a rectification mode of the rectifier. The rectification mode may include but is not limited to any one of the following: a voltage multiplier rectification mode or a full-bridge rectification mode. Therefore, a variable dynamic range of an output voltage of the rectifier provided in embodiments of this application is large.