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Numerous commercial standards for wireless power transfer (WPT) have been proposed to ensure the standardized application of this technology. However, this has significantly narrowed the parameter selection range, forcing a trade-off between efficiency and power. A commercial WPT design scheme for mobile phone is selected as an example to analyze the reason for low system efficiency of existing solutions. Accordingly, an asymmetric parameter optimization approach is proposed. Experimental results demonstrate that this study can improve system efficiency by approximately 10% under rated conditions, reduce the receiver temperature by 40 °C and maintain consistent output power and efficiency regardless of coil misalignment. This provides a flexible and efficient design approach for portable WPT systems.

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Optimization Method for Self-resonant Network to Address High-Temperature Risks in Portable Wireless Charging Systems

  • 会议论文

  • 发表日期：

    2025年

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  • Shiming Zhang,
  • Dong Guo,
  • Dan Li

摘要

Numerous commercial standards for wireless power transfer (WPT) have been proposed to ensure the standardized application of this technology. However, this has significantly narrowed the parameter selection range, forcing a trade-off between efficiency and power. A commercial WPT design scheme for mobile phone is selected as an example to analyze the reason for low system efficiency of existing solutions. Accordingly, an asymmetric parameter optimization approach is proposed. Experimental results demonstrate that this study can improve system efficiency by approximately 10% under rated conditions, reduce the receiver temperature by 40 °C and maintain consistent output power and efficiency regardless of coil misalignment. This provides a flexible and efficient design approach for portable WPT systems.