Contactless Power Supply Control via Data Continuity Monitoring
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Solution Overview
Problem
Conventional contactless power supply systems face instability in communication and power delivery due to positional misalignment and external disturbances, leading to potential power outages and inefficient energy transfer.
Innovation Solution
A contactless power supply system that includes a power supply device with a power supply coil unit, a communication unit, and a power supply control unit, which adjusts output power based on continuity checks of data received from the power receiving device, using a correction table to enhance communication stability and power delivery even in deteriorated conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power supply is halted and resumed based on received signals to accurately supply power to the target power receiving device, then power supply accuracy is improved, but communication stability and power supply stability deteriorate when positional relationship is wrong or external disturbance occurs
Solution Approach 1:
The system performs preliminary actions by continuously monitoring communication quality indicators (packet loss rate, signal strength) before power supply issues occur. When communication quality deteriorates below thresholds, the system proactively adjusts power supply parameters or notifies the power receiving device, preventing power supply interruptions before they happen.
Solution Approach 2:
The system establishes bidirectional feedback mechanisms where the power receiving device continuously reports communication quality metrics and power reception status to the power supply device. The power supply device uses this feedback to dynamically adjust transmission parameters, ensuring stable power supply even when communication conditions vary.
2Ease of operation
If communication is performed between power receiving device and power supply device with battery operation on power receiving device, then wireless communication capability is achieved, but power supply stability deteriorates when battery charge drops or power supply efficiency decreases
Solution Approach 1:
The system monitors battery charge levels and power supply efficiency metrics in advance. When these parameters approach critical thresholds, the system proactively notifies users or adjusts operation modes before complete power failure occurs, maintaining communication stability throughout the power depletion process.
Solution Approach 2:
The power receiving device continuously feeds back battery status and power reception efficiency to the power supply device. This feedback enables dynamic adjustment of communication and power transfer parameters to maintain stable operation even as battery charge decreases.
3Power
If power supply efficiency is increased to ensure sufficient power delivery, then power delivery capability is improved, but communication stability deteriorates due to external disturbance and positional deviation
Solution Approach 1:
The system dynamically adjusts power supply parameters based on real-time communication quality and positional relationship detection. When communication stability is compromised, the system modifies transmission power and modulation parameters to maintain both power delivery and communication reliability under varying conditions.
Solution Approach 2:
The system changes communication and power transfer parameters (frequency, power level, modulation scheme) based on detected external disturbances and positional deviations. These parameter adjustments optimize the balance between power delivery capability and communication stability in different operating conditions.
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
The system stabilizes communication and ensures stable power supply by dynamically adjusting output power in response to data continuity losses, improving communication and power transfer reliability across varying positional relationships and environmental disturbances.
Implementation Method 1
a power supply coil unit that supplies power to the power receiving coil unit of the power receiving device
Data Source
AI summary
A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, in a steady state where communication is performed between two communication units after the second communication unit begins receiving the data transmitted from the first communication unit, refers to information having continuity attached to the data, and if continuity has been lost, performs correction to increase the output value of the power from the power supply coil unit to the power receiving coil unit.