A Wireless Charging Device and Methods of Use
First Claim
1. A wireless charging device having a Pulse Width Modulation (PWM) unit integrated within a transmitting unit of said wireless charging device and configured to modulate RF energy transmission to a device under charge according to real time analysis of the charging process progress, said PWM unit is connected to a charging tracking module and to controller, wherein said charging tracking module is adapted to provide data reflecting the progress of said charging process and said controller is adapted to receive said data from said charging tracking module and adjust the duty cycle of said PWM unit according to the data obtained, so as to adjust the transmitted power to the wireless charging process.
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Abstract
The invention is directed to a wireless charging device having a Pulse Width Modulation (PWM) unit integrated within a transmitting unit of said wireless charging device and configured to modulate RF energy transmission to a device under charge according to real time analysis of the charging process, said PWM unit is connected to a charging tracking module and to controller, wherein said charging tracking module is adapted to provide data reflecting the progress of said charging process and said controller is adapted to receive said data from said charging tracking module and adjust the duty cycle of said PWM unit according to the data obtained, so as to adjust the transmitted power to the wireless charging process and thus, to have minimal energy loss during said wireless charging process. The invention is further directed to a wireless charging system comprising a wireless charging device according to the above and a device under charge, wherein during the wireless charging process the transmission of RF energy by the transmitting unit is enabled according to the duty cycle of the PWM that changes according to the progress of the charging process, so as to provide a desired average power level to a receiving unit in the device under charge while keeping a peak power level transmitted for maintaining a high power conversion efficiency.
9 Citations
10 Claims
- 1. A wireless charging device having a Pulse Width Modulation (PWM) unit integrated within a transmitting unit of said wireless charging device and configured to modulate RF energy transmission to a device under charge according to real time analysis of the charging process progress, said PWM unit is connected to a charging tracking module and to controller, wherein said charging tracking module is adapted to provide data reflecting the progress of said charging process and said controller is adapted to receive said data from said charging tracking module and adjust the duty cycle of said PWM unit according to the data obtained, so as to adjust the transmitted power to the wireless charging process.
Specification