Wireless power transmitting apparatus, wireless power receiving apparatus, and methods of operating same

By identifying and processing voltage peak-to-peak values ​​in the wireless power transmitting device and providing modulation depth control packets to the wireless power receiving device, the problem of difficulty in modulation depth adjustment in the prior art is solved, and the electromagnetic compatibility and stability of the system are improved.

CN119678342APending Publication Date: 2025-03-21SAMSUNG ELECTRONICS CO LTD
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Patent Information

Application Number
CN202380046654.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-07-12
Filing Date
2023-03-17
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

When the existing wireless power transmitting device performs in-band communication, it is difficult to effectively adjust the modulation depth of the wireless power receiving device, resulting in electromagnetic compatibility and noise problems.

Method used

By introducing a controller in the wireless power transmitting device, a voltage peak to peak value within the transmission coil is identified and an operation is performed according to the value, packets are provided to the wireless power receiving device to reduce or increase its modulation depth.

Benefits of technology

Dynamic adjustment of the modulation depth of the wireless power receiving device is realized, reducing electromagnetic compatibility problems and noise generation, and improving the stability and efficiency of the system.

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Abstract

An example wireless power transmitter may include: a transmitting coil; a converter configured to output a driving voltage; an inverter configured to output AC power to the transmission coil by using the driving voltage; and a controller. The controller may be configured to identify a first voltage at one point within the wireless power transmitter when power is wirelessly transmitted through the transmit coil. The controller may be configured to perform at least one operation for providing a first packet for reducing a modulation depth of the wireless power receiver to the wireless power receiver based on a peak-to-peak value identified according to the first voltage exceeding a first reference value.
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