Toyota Patent Application for Wireless Power Supply Device

ChangeBridge: Patent Apps - Power Supply (H02J)

Published July 21st, 2023

Detected March 26th, 2026

Summary

The USPTO has published a patent application from Toyota Jidosha Kabushiki Kaisha for a wireless power supply device. The application details a system for wirelessly transmitting power and diagnosing sensor abnormalities, filed on July 21, 2023.

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What changed

This document is a USPTO patent application (US20260088657A1) for a wireless power supply device assigned to Toyota. The application describes a system comprising a DC power source, inverter circuit, resonance circuit with a power transmission coil, sensors, and a control device. The control device manages wireless power transmission and can diagnose sensor abnormalities by altering the power supply to the resonance circuit and analyzing sensor feedback.

This is a patent application, not a regulation, and therefore does not impose direct compliance obligations or deadlines on regulated entities. However, it represents a technological development in wireless power transfer that may influence future industry standards or product designs in the automotive and technology sectors.

Source document (simplified)

← USPTO Patent Applications

POWER SUPPLY DEVICE

Application US20260088657A1 Kind: A1 Mar 26, 2026

Assignee

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventors

Kazutaka KIMURA, Toshiya HASHIMOTO, Makoto HASHIMOTO, Nobuhisa YAMAGUCHI, Keisuke TANI, Kazuyoshi OBAYASHI, Masaki KANESAKI, Yuichi TAKEMURA

Abstract

A power supply device that wirelessly transmits power includes: a DC power source; an inverter circuit connected to the DC power source; a resonance circuit connected to the inverter circuit and including a power transmission coil; sensors that detect a current value flowing through the circuits or a voltage value applied to the circuits; and a control device connected to the inverter circuit and the sensor. The control device controls, when causing the power supply device to wirelessly transmit power, the inverter circuit to convert a DC voltage supplied from the DC power source into an AC voltage and supply the AC voltage to the resonance circuit. The control device controls, when diagnosing a sensor abnormality, the inverter circuit to supply the DC voltage to the resonance circuit without converting the DC voltage into the AC voltage and diagnoses a sensor abnormality based on a present sensor detection value.