Wireless Power Detection via Electrical Parameters
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Solution Overview
Problem
Existing wireless power-supplying systems rely on cameras to determine misalignment between power-transmitting and power-receiving devices, which is costly and prone to issues with unclear images due to dirty lenses.
Innovation Solution
A wireless power-supplying system that uses a control unit to determine the positional relationship between power-transmitting and power-receiving devices based on power, voltage, and current parameters, eliminating the need for cameras by employing a switch and load circuit to assess power suppliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is used to determine misalignment between power-transmitting and power-receiving devices, then positional relationship can be detected, but the system cost increases and reliability decreases due to lens contamination issues
Solution Approach 1:
The patent replaces the optical camera-based detection system with an electrical parameter-based detection system. Instead of using a camera to capture images and determine misalignment, the invention uses the control unit to measure electrical parameters (power, voltage, current) during the power transmission process. These electrical parameters inherently reflect the coupling state and positional relationship between the power-transmitting and power-receiving coils, eliminating the need for external optical sensors and improving system reliability.
Solution Approach 2:
The patent introduces electrical parameters as an intermediary to infer the positional relationship. Rather than directly observing the physical position through a camera, the system uses power, voltage, and current measurements as intermediate indicators that correlate with the misalignment state. The control unit analyzes these electrical intermediaries to determine whether the devices are properly aligned, providing a more reliable indirect measurement method.
2Measurement precision
If a camera is used to specify misalignment, then positional information can be obtained, but the system cost increases
Solution Approach 1:
The patent replaces the expensive camera-based optical detection system with a cost-effective electrical measurement approach. The control unit utilizes existing electrical components and parameters (power, voltage, current) that are already present in the wireless power transmission system, eliminating the need for additional expensive optical sensors, lenses, and image processing hardware.
Solution Approach 2:
The patent makes the electrical parameters serve dual purposes: they are used for power transmission control and simultaneously for determining misalignment. The power, voltage, and current measurements taken during normal operation inherently provide information about the positional relationship, eliminating the need for separate dedicated detection components and reducing overall system cost.
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
Enables accurate specification of misalignment without cameras, reducing costs and improving reliability by using electrical parameters to ensure efficient power transmission.
Implementation Method 1
a wireless power-supplying system that supplies power from a power-transmitting device including a power-transmitting coil to a power-receiving device including a power-receiving coil using magnetism
Implementation Method 2
supplies power from a power-transmitting device including a power-transmitting coil to a power-receiving device including a power-receiving coil using magnetism
Data Source
AI summary
A wireless power-supplying system includes a power-transmitting device that transmits power in a wireless manner and a power-receiving device that receives the power and supplies the received power to a load, the power-receiving device includes a switch that switches the connection to the load and a load circuit that is supplied with the power when the switch is in an open state, and the wireless power-supplying system includes a control unit that performs a position determining process of determining whether the power-transmitting device and the power-receiving device have a positional relationship in which power is suppliable to the load on the basis of at least one of power, voltage, and current in at least one of the power-transmitting device and the power-receiving device when the power is supplied to the load circuit.