Contactless Power Supply Continuity Correction
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Solution Overview
Problem
Conventional contactless power supply systems face instability in power delivery due to positional misalignment and external disturbances, leading to unreliable communication and power supply to the receiving device.
Innovation Solution
A contactless power supply system that adjusts power output based on continuity checks in data communication between the power supply device and the receiving device, using a power supply control unit to increase output when continuity is lost, and employing a correction table for optimal power modulation.
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 attaching continuity information to data before transmission, and the power supply device checks this continuity information in advance before making power supply decisions. This allows the system to prepare for potential communication issues and maintain stable power supply even when positional relationship is incorrect or external disturbance occurs, resolving the contradiction between power supply accuracy and communication stability.
2Reliability
If power supply output is increased to compensate for communication loss, then power delivery reliability is improved, but energy efficiency deteriorates due to unnecessary power increase when communication interruption occurs
Solution Approach 1:
The system uses feedback by continuously monitoring the continuity information attached to received data and adjusting power supply output accordingly. When continuity is maintained, normal power output is used; when continuity is lost, power output is increased only for the specific duration needed to compensate for communication interruption. This feedback mechanism ensures reliable power delivery while minimizing unnecessary energy consumption.
3Reliability
If continuous monitoring of communication data is performed to detect continuity loss, then communication stability is improved, but system complexity increases due to additional monitoring and correction mechanisms
Solution Approach 1:
The power receiving device performs self-service by automatically attaching continuity information to its transmitted data without requiring external assistance. The power supply device simply checks this pre-attached continuity information and autonomously decides whether to increase power output. This self-service approach maintains communication stability while avoiding the need for complex centralized monitoring and control systems.
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
Stabilizes communication and ensures stable power delivery even in poor communication environments by dynamically adjusting power output, thereby maintaining reliable operation.
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 communicates with the contactless power supply device and 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, when the second communication unit begins to receive data transmitted from the first communication unit, refers to the information having continuity attached to the continuously received data, and if continuity has been lost, performs correction to increase the output value of the power supplied from the power supply coil unit to the power receiving coil unit.