AC/DC Selector Pin in Power Receptacle
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Solution Overview
Problem
Existing power distribution systems face inefficiencies due to the need for electronic devices to convert AC power to DC, which adds complexity and dissipates power, while renewable energy sources primarily provide DC power, making it desirable to adapt standard AC plugs and receptacles to flexibly handle both AC and DC power sources without requiring new physical configurations.
Innovation Solution
Modifying standard AC plugs and receptacles by adding a selector pin or interposer to select between AC and DC power, incorporating electronics that manage power selection, regulation, and communication with energy management systems, allowing for seamless switching between AC and DC power based on availability and device requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard AC plugs and receptacles are modified to accept DC power, then compatibility with renewable energy sources is improved, but device complexity increases
Solution Approach 1:
The patent implements a nested structure where a selectable pin mechanism is housed within the existing AC plug body. The selectable pin (which can be positioned to contact either the AC neutral contact or a DC contact) is nested inside the plug housing, allowing the plug to maintain its standard external form while incorporating DC power acceptance capability internally.
Solution Approach 2:
The modified plug and receptacle are designed to perform multiple functions: they can accept both AC power (maintaining compatibility with traditional outlets) and DC power (enabling connection to renewable energy sources). The selectable pin mechanism allows the same physical plug to interface with different power types, making the system universally compatible with multiple power sources.
2Adaptability or versatility
If a selectable pin mechanism is added to enable AC/DC selection, then power source flexibility is improved, but manufacturing complexity increases
Solution Approach 1:
The selectable pin mechanism is designed as a separate, modular component that can be independently manufactured and then assembled into the plug housing. This segmentation allows the pin selection mechanism to be produced using standard manufacturing techniques and then integrated into the existing plug molding process, rather than requiring a completely new complex manufacturing process.
Solution Approach 2:
The selectable pin acts as an intermediary element between the power source (AC or DC) and the electronic device. By positioning this single selectable contact point, the system can mediate between different power types without requiring complete redesign of the entire plug-receptacle interface, simplifying the overall manufacturing approach.
3Productivity
If electronics are embedded in the receptacle for AC/DC management, then power distribution efficiency is improved, but device complexity increases
Solution Approach 1:
The embedded electronics in the receptacle are designed to automatically detect whether AC or DC power is being supplied and autonomously manage the power distribution without requiring user intervention. The system self-adjusts its operation based on the detected power type, eliminating the need for manual switching or complex user-facing controls.
Solution Approach 2:
The receptacle incorporates detection circuitry that provides feedback about the available power source type (AC or DC) to the embedded power management electronics. This feedback mechanism enables the system to automatically configure itself for the appropriate power type, improving power distribution efficiency while keeping the control logic relatively simple through reactive rather than predictive control.
Data Source
AI summary
A method and apparatus for modifying standard AC plugs and receptacles to flexibly furnish AC or DC power is disclosed. This can be accomplished by adding a “selector” pin between the non-ground pins used in traditional AC plugs. Alternately, an interposer can be manually applied to the plug to effect selection. Plug electronics can select AC or DC based on respective availability. A flexible power receptacle can manage AC/DC selection, regulate the supplied DC voltage and enable reversion to the AC supply if the DC supply is inadequate. Electronics within a flexible power receptacle can convert DC to AC when advantageous and can regulate the supplied voltage. Additional electronics within a flexible power plug or receptacle can enable communication.