Method and system for protecting wireless power transmission systems

The wireless power transmission system addresses overvoltage issues by using a switching unit to decouple components and adjust voltage, ensuring safe and efficient power delivery to electric vehicle batteries.

JP7885418B2Active Publication Date: 2026-07-06DOLBY INTELLECTUAL PROPERTY LICENSING LLC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
DOLBY INTELLECTUAL PROPERTY LICENSING LLC
Filing Date
2025-09-19
Publication Date
2026-07-06

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Abstract

We provide wireless power transmission systems. [Solution] The wireless power transmission system includes a first conversion unit configured to convert a first DC voltage of input power to a first AC voltage. Furthermore, the wireless power transmission system includes a non-contact power transmission unit configured to receive input power having a first AC voltage from the first conversion unit and transmit the input power. The wireless power transmission system also includes a second conversion unit configured to receive input power from the non-contact power transmission unit and convert the first AC voltage of the input power to a second DC voltage. Furthermore, the wireless power transmission system includes a switching unit configured to adjust the second DC voltage between the ends of an electrical load if the second DC voltage between the ends of the electrical load is greater than a voltage reference value.
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