Wireless Power Transmitter Standby Power Reduction
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Solution Overview
Problem
Existing wireless power transmitters do not have a mechanism to efficiently reduce standby power consumption when an electronic device is turned off, leading to unnecessary energy usage.
Innovation Solution
A wireless power transmitter design that includes a receiving unit for remote power-on/off signals, a power transmission controller to generate drive signals based on these signals, and a power transmission unit to form and transmit wireless power signals, allowing the transmitter to be turned off when the device is inactive, thereby reducing standby power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless power transmitter continuously supplies power in standby mode, then the device is ready to charge immediately, but standby power consumption increases
Solution Approach 1:
The patent implements dynamic power management by allowing the wireless power transmitter to switch between active and low-power states based on whether a device is present. The system dynamically adjusts its operational state rather than maintaining a fixed standby mode, resolving the contradiction between readiness and energy consumption.
Solution Approach 2:
The system uses automatic device detection to determine when power transmission is needed, eliminating the need for continuous monitoring and manual intervention. The transmitter serves itself by automatically entering low-power mode when no device is detected and activating when a device is present, thus resolving the contradiction without external control.
2Loss of energy
If the wireless power transmitter uses remote power-on/off control, then power can be precisely controlled based on device usage, but system complexity increases
Solution Approach 1:
The patent replaces complex mechanical or manual control systems with wireless electromagnetic signal-based control. The remote power-on/off functionality is achieved through wireless communication protocols rather than physical connections or complex control circuits, reducing overall system complexity while improving energy efficiency.
Solution Approach 2:
The wireless communication interface serves multiple functions: device identification, power control, and status monitoring. By making the communication system multi-functional, the patent avoids adding separate dedicated control circuits, thus improving energy efficiency without proportionally increasing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively reduces the standby power consumption of both the wireless power transmitter and the electronic device by ensuring only necessary power is used when the device is not in use, optimizing energy efficiency.
Implementation Method 1
a power transmission unit configured to form a wireless power signal based on the supplied voltage and the drive signal to transmit wireless power to the wireless power receiver
Data Source
Figure 1~2B
Figure 3
Figure 4A~4B
AI summary
The present disclosure relates to a wireless power transmitter capable of reducing standby power in the wireless power transmitter, and a method thereof, and the wireless power transmitter according to the present disclosure may include a power supply unit configured to supply a voltage; a receiving unit configured to receive a power-on signal or power-off signal from a remote controller; a power transmission controller configured to generate a drive signal to supply power for the operation of the electronic device based on the power-on signal; and a power transmission unit configured to form a wireless power signal based on the supplied voltage and the drive signal to transmit wireless power to the wireless power receiver.