Contactless Power Delivery for Vehicle Doors
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Solution Overview
Problem
Conventional contactless power delivery systems for power-assisted vehicle doors only provide energy when the door is closed, failing to deliver continuous power during opening and closing, which leads to wear and tear on power cables due to repeated bending, stretching, and movement.
Innovation Solution
A contactless power delivery system using a supporting device with an energy transmitting source and a movable energy receiving device, where the energy transmitting source is mounted on the hinge axis and the energy receiving device is magnetically coupled to maintain power transfer during door movement, ensuring uninterrupted power delivery through inductive coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power cables are used to deliver power from the vehicle to the door, then power delivery is achieved, but the cables suffer from wear and tear due to repeated bending, stretching, and movement during door operation
Solution Approach 1:
The patent extracts the power delivery function from physical cables and implements it through contactless inductive coupling between a transmitting coil mounted on the vehicle frame and a receiving coil mounted on the door. This eliminates the cables that were causing wear and tear while maintaining continuous power delivery during door movement.
Solution Approach 2:
The patent replaces the mechanical cable-based power delivery system with an electromagnetic inductive coupling system. The transmitting coil generates an oscillating magnetic field that induces current in the receiving coil, substituting the mechanical connection with a field-based energy transfer mechanism that withstands door movement without wear.
2Ease of operation
If conventional contactless power delivery systems are used, then power delivery without cables is achieved, but power delivery is interrupted during door opening and closing
Solution Approach 1:
The patent positions the transmitting coil on the vehicle frame and the receiving coil on the door such that their centers remain substantially aligned throughout the door's movement range. This dynamic geometric arrangement ensures continuous inductive coupling during door opening and closing, maintaining uninterrupted power delivery while preserving the contactless operation advantage.
3Duration of action of stationary object
If power cables are used for power delivery, then continuous power during door movement is achieved, but excess wiring and risk of tangling or cutting occur
Solution Approach 1:
The patent removes the physical wiring infrastructure from the power delivery system and replaces it with inductive coupling between coils. This extraction eliminates the complexity of routing, protecting, and managing power cables while maintaining continuous power delivery capability throughout door operation.
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 provides continuous power delivery to power-assisted vehicle doors during opening and closing, reducing wear on cables and eliminating the need for excess wiring, thus enhancing reliability and reducing the risk of tangling or cutting.
Implementation Method 1
An energy transmitting source is connected to a power frequency generator. The power frequency generator is connected to a power source and configured to couple an oscillating signal to the energy transmitting source.
Implementation Method 2
An energy receiving device is magnetically coupled to the energy transmitting source to receive a power signal from the energy transmitting source.
Data Source
AI summary
Power delivery systems and methods for delivering power from a vehicle to a vehicle door. The system includes a supporting device having a first portion fixedly mounted to a main frame and a second portion attached to a door. The second portion being movable about a hinge axis portion that connects the first portion to the second portion. An energy transmitting source is connected to a power frequency generator. The power frequency generator is connected to a power source and configured to couple an oscillating signal to the energy transmitting source. The energy transmitting source is mounted on the hinge axis portion of the supporting device. An energy receiving device is magnetically coupled to the energy transmitting source to receive a power signal from the energy transmitting source. The energy receiving device is mounted on the second portion of the supporting device at a fixed distance from the energy transmitting source. The energy receiving device receives the power signal from the energy transmitting source to deliver the power signal to powered components associated with the door. The power delivery is uninterrupted during opening and closing of the door.