Wireless power-feeding device

The wireless power supply device addresses the issue of increasing output power requirements by using a movement system with X-axis and Y-axis rails and drive units to position the power transmission coil effectively, resulting in a compact and cost-effective design with efficient power transmission.

WO2025115960A1PCT designated stage expired Publication Date: 2025-06-05PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Patent Information

Application Number
PCT/JP2024/042161
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-01
Filing Date
2024-11-28
Publication Date
2025-06-05

AI Technical Summary

Technical Problem

Existing wireless power supply devices require increased output power for the drive unit as the length of the hollow screw increases, leading to larger and more costly actuators.

Method used

A wireless power supply device with a power transmission unit, position detection device, movement system, and housing, where the movement system includes an X-axis rail, Y-axis rail, X-axis drive unit, and Y-axis drive unit, allowing the power transmission coil to be moved to face the power reception coil based on detected position, thereby reducing the required output power for the drive unit.

Benefits of technology

The solution suppresses the increase in output power required for the drive unit, allowing for a more compact and cost-effective design, while maintaining efficient power transmission.

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    Figure JP2024042161_05062025_PF_FP_ABST
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Abstract

The present disclosure addresses the problem of suppressing an increase in the output required by a drive unit. A wireless power-feeding device (1) comprises: power transmission units (8); a position detection device; a movement system (M1); and a housing (2). The power transmission units (8) each include a power transmission coil (81). The movement system (M1) moves the power transmission coils (81) to a position facing a power reception coil on the basis of the position of the power reception coil detected by the position detection device. The movement system (M1) includes: an X-axis rail (4); Y-axis rails (6); X-axis drive units (5) that move the Y-axis rails (6) along the X-axis rail (4); and Y-axis drive units (7) that moves the power transmission units (8) along the Y-axis rails (6), the power transmission units being movably connected to the Y-axis rails (6). The X-axis drive units (5) are held on the Y-axis rails (6). The Y-axis drive units (7) are held by the power transmission unit (8).
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Citation Information

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