Power receiver, power transmission system, and power receiving meihod
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United States of America Patent
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Oct 12, 2021
Grant Date -
Oct 22, 2020
app pub date -
Jul 1, 2020
filing date -
Feb 9, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A power receiver includes: a secondary-side resonant coil that includes a resonant coil circuit and receives power from a primary-side resonant coil; a capacitor inserted into the resonant coil circuit; a series circuit including a first switch and a second switch; a first rectifying element having a first rectification direction; a second rectifying element having a second rectification direction; a detection circuit that detects a voltage or a current; a binarization processing circuit that outputs a rectangular wave obtained by binarizing the voltage or the current; a rectangular wave detection circuit that detects a rising or falling timing and a cycle of the rectangular wave; a reference clock generation circuit that generates a reference clock based on the rising or falling timing and the cycle; and a control circuit that generates a control clock used to switch on and off by adjusting a phase or a duty ratio.
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