Wireless power transmitter
The wireless power transmitter with a multi-turn coil and integrated capacitor structure addresses overheating and hardware damage by detecting foreign objects through power transmission value changes, simplifying the hardware and reducing costs.
JP2026110540APending Publication Date: 2026-07-02ボルトラウェア セミコンダクター カンパニーリミテッド
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ボルトラウェア セミコンダクター カンパニーリミテッド
- Filing Date
- 2025-12-11
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Conventional wireless power transmission devices using inductive coupling face issues with overheating and hardware damage due to foreign objects, necessitating additional sensing coils that increase complexity and cost.
Method used
A wireless power transmitter with a multi-turn coil conductor and integrated capacitor structure, which resonates with the electromagnetic field to detect foreign objects by measuring power transmission values, eliminating the need for additional sensing coils.
Benefits of technology
Accurately detects foreign objects without additional sensing coils, reducing hardware complexity and manufacturing costs while enhancing safety and reliability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026110540000001_ABST
Abstract
To provide a wireless power transmission device. [Solution] A wireless power transmitting device comprising: a first circuit board; a multi-turn coil conductor provided on the first circuit board and including at least one first capacitor structure; a first coil structure wherein the straight-line distance between the first capacitor structure and the output end of the multi-turn coil conductor is smaller than the straight-line distance between the first capacitor structure and the input end of the multi-turn coil conductor, and the position of the first capacitor structure does not overlap with the position of the output end; and a control circuit, the control circuit measuring the first coil structure to obtain a power transmission value and determining whether a foreign object has entered the power transmission range between the wireless power transmitting device and the receiving device based on the power transmission value.
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