Power Transmission Terminal Layout for Simplified Aircraft Wiring
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Solution Overview
Problem
The existing power transmission systems in aircraft require complex wiring configurations due to the arrangement of DC distribution buses, leading to increased weight and complexity in connecting power transmission devices.
Innovation Solution
A power transmission device with input and output terminals arranged in a specific configuration, allowing for simplified wiring by facing two power transmission devices between two power source devices, with output terminals arranged in a line to prevent wire intersections and reduce weight distribution asymmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DC distribution buses are connected via contactors with traditional wiring arrangements, then power transmission function is achieved, but wiring structure becomes complex and weight increases
Solution Approach 1:
The patent applies asymmetry by arranging the four terminals (two positive, two negative) in a non-traditional linear sequence rather than grouped polarity arrangement. This asymmetric terminal layout enables the facing power transmission devices to connect with simplified wiring that does not cross, reducing structural complexity while maintaining power transmission reliability
Solution Approach 2:
The patent transitions from traditional two-dimensional terminal arrangements (grouped by polarity) to a one-dimensional linear arrangement of alternating polarities. This dimensional reorganization allows facing devices to connect directly without wire intersections, simplifying the wiring structure while preserving the power transmission function
2Ease of operation
If traditional terminal arrangements are used in power transmission devices, then connection functionality is provided, but wire weight increases due to intersections and complex routing
Solution Approach 1:
The asymmetric linear arrangement of terminals with alternating polarities eliminates the need for crossing wires that would occur with traditional grouped arrangements. This reduces the total length and complexity of wiring required, directly decreasing wire weight while maintaining full connection functionality between facing power transmission devices
Solution Approach 2:
By reorganizing terminals in a linear one-dimensional sequence rather than traditional two-dimensional grouped layout, the patent enables direct point-to-point connections without intersections. This dimensional change eliminates redundant wire routing and reduces overall wire weight while preserving connection capabilities
3Volume of moving object
If power transmission devices are disposed facing each other between power source devices, then system compactness is improved, but weight distribution asymmetry occurs with traditional terminal arrangements
Solution Approach 1:
The patent uses asymmetric terminal arrangement to achieve symmetric weight distribution. By alternating positive and negative terminals in a linear sequence, the wiring from facing devices can be routed symmetrically, balancing the weight distribution across the compact system while maintaining the space-efficient facing configuration
4Device complexity
If simplified wiring is implemented, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the terminal arrangement into a standardized linear pattern with alternating polarities. This segmented, modular terminal layout simplifies the overall wiring structure while establishing clear manufacturing guidelines for terminal positioning, making precision requirements more manageable through repetition and standardization
Data Source
AI summary
A power transmission device that transmits electric power from a PCU to drive modules includes: a power-source-side positive terminal and a power-source-side negative terminal that are connected to the PCU and receive DC power; and load-side positive terminals and load-side negative terminals each connected to corresponding one of the drive modules and output DC power. The load-side positive terminals and the load-side negative terminals are arranged in a line in the order of the load-side positive terminal, the load-side negative terminal, the load-side negative terminal, and the load-side positive terminal.