Rotating Seat Power Supply via Segmented Coils and Shielding
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Solution Overview
Problem
Existing power supply mechanisms for slidable seats in automobiles are inadequate for rotating seats, as they are configured to supply power from a single power supply coil to multiple reception coils, making it difficult to maintain power supply when the seat rotates.
Innovation Solution
A power supply device with a power transmission unit in the floor, a rotation shaft fixed to the seat, and a power reception unit attached to the rotation shaft, ensuring continuous power supply even when the seat rotates by maintaining proper alignment and using a metal shield cover to reduce electromagnetic noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power is supplied from one power supply coil to multiple power reception coils in the sliding seat, then power can be distributed to multiple locations, but when the seat rotates, the seat moves to a position where power cannot be supplied from the power supply coil
Solution Approach 1:
The power supply system is segmented into multiple independent power supply coils arranged along the sliding direction, with each coil capable of independently supplying power to the power reception coil. This segmentation allows the system to maintain power supply continuity by switching between different power supply coils as the seat moves or rotates.
Solution Approach 2:
The system dynamically selects which power supply coil to activate based on the seat's position. The control unit determines the seat's position and activates the appropriate power supply coil to ensure continuous power supply, making the power supply system adaptive to the seat's movement and rotation.
2Ease of operation
If the seat is configured to rotate relative to the body, then passenger access is improved, but the existing power supply mechanism cannot maintain power supply during rotation
Solution Approach 1:
The power supply system transitions from a static single-coil configuration to a multi-coil arrangement along the sliding direction, adding spatial dimensionality to the power supply architecture. This dimensional expansion enables the system to maintain power supply continuity across both sliding and rotating movements of the seat.
Solution Approach 2:
The control unit receives feedback about the seat's position and rotation state, and uses this information to determine which power supply coil should be activated. This feedback mechanism ensures that the power supply system adapts to the seat's movement, maintaining reliable power supply during rotation and sliding operations.
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 reliable power supply to the power reception unit during seat rotation by maintaining alignment and reducing electromagnetic interference, ensuring uninterrupted power delivery.
Implementation Method 1
The power transmission unit includes a power transmission coil, and the power reception unit includes a power reception coil that receives power from the power transmission coil
Implementation Method 2
A metal shield cover is included that is configured to cover the power transmission unit and the power reception unit
Data Source
AI summary
A power supply device (10) for a seat that can slidably move relative to a rail (15) that is provided in the floor portion (11) of an automotive body, the power supply device (10) including: the power transmission unit (20) that is provided in the floor portion (11); the rotation shaft portion (40) that is fixed to the seat, and serves as the rotation axis of the seat; and the power reception unit (30) that is fixed to the rotation shaft portion (40) and is configured to receive power from the power transmission unit (20).