Wireless Power Receiver Resonance Control for Precise Energy Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless charging systems using a single antenna for both power transmission and command communication are unable to simultaneously perform these functions, leading to excessive power supply to electronic devices and potential power shortages in other devices.
Innovation Solution
An electronic apparatus with a power receiving unit, resonance unit, and control unit that adjusts the resonant frequency and characteristic values of the power receiving unit based on detected data to control power reception, allowing for efficient power management and preventing excessive power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power supply apparatus uses the same antenna to perform both command communication and power transmission, then device complexity is reduced, but power supply precision deteriorates causing excessive power to be supplied to the electronic apparatus
Solution Approach 1:
The patent segments the antenna system into two separate functional components: a first antenna dedicated to command communication and a second antenna dedicated to power transmission. This segmentation allows each antenna to be optimized for its specific function, eliminating the interference that occurs when a single antenna performs both functions. The power supply apparatus can now accurately control power supply based on charging state information received through the communication antenna without interference from power transmission operations.
2Reliability
If the power supply apparatus alternates between command communication and power transmission, then communication reliability is improved, but power transmission efficiency deteriorates causing excessive power supply
Solution Approach 1:
The patent divides the communication function into two parts: command communication through the first antenna and status information feedback through the second antenna. This allows the power supply apparatus to receive charging state information simultaneously with power transmission without needing to alternate operations, thereby maintaining both communication reliability and power transmission efficiency.
Solution Approach 2:
The second antenna acts as an intermediary that carries charging state information from the electronic apparatus to the power supply apparatus during power transmission. This intermediary channel enables real-time monitoring and control of power supply without interrupting the power transmission process, eliminating the need to alternate between communication and power transmission modes.
3Stability of the object's composition
If the electronic apparatus receives power continuously without power control, then power reception stability is improved, but energy waste increases due to excessive power supply
Solution Approach 1:
The patent implements a feedback mechanism where the electronic apparatus transmits charging state information to the power supply apparatus, which then adjusts the power transmission accordingly. The power supply apparatus receives feedback about the charging status and modifies the power output to match the actual power needs of the electronic apparatus, preventing both over-supply and under-supply of power while maintaining stable reception.
Solution Approach 2:
The power transmission system transitions from a static continuous power supply to a dynamic adjustable power supply. The power supply apparatus can change the power transmission level in response to charging state information, adjusting the power output to match the varying power needs of the electronic apparatus during different charging stages, thereby eliminating energy waste from excessive power supply.
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 enables precise control of power supply to electronic devices, preventing excessive power delivery and optimizing power usage, while also allowing for simultaneous communication and power transmission without wasting energy.
Implementation Method 1
a resonance unit configured to set at least either one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus
Data Source
AI summary
An electronic apparatus includes a power receiving unit configured to wirelessly receive power from an external apparatus, a resonance unit configured to set at least one of a resonant frequency of the power receiving unit and a characteristic value of the electronic apparatus, the characteristic value indicating a resonance characteristic of the electronic apparatus, and a control unit configured to, before the electronic apparatus performs a predetermined operation, detect data indicating power for performing the predetermined operation, and control the resonance unit to set at least one of the resonant frequency of the power receiving unit and the characteristic value of the electronic apparatus based on the detected data, wherein the control unit is configured to perform the predetermined operation by using power received based on the at least one of the resonant frequency and the characteristic value of the electronic apparatus set by the resonance unit.