Grid-Connected/Off-Grid Socket Bypass for Uninterrupted Backup Power
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Solution Overview
Problem
Existing balcony photovoltaic-storage systems lack a solution for providing uninterrupted power supply during a grid outage while maintaining portability and mobility, and professional modifications to achieve uninterrupted power supply compromise the system's portability and mobility.
Innovation Solution
An energy storage power supply system with an all-in-one energy storage unit and a grid-connected/off-grid socket, featuring a bypass switch that automatically switches between grid-connected and off-grid modes, ensuring continuous power supply by integrating a grid-connected port and an off-grid port with pluggable connectors for easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If professional wiring modification is performed to achieve uninterrupted power supply during grid outage, then power supply reliability is improved, but device portability and mobility are worsened
Solution Approach 1:
The system divides the distribution box into two independent parts: a main distribution box for grid connection and a sub-distribution box for core loads. The energy storage unit can be connected to either or both, allowing uninterrupted power supply to core loads during grid outage without requiring permanent wiring modifications throughout the entire system. This segmentation enables the system to maintain portability while achieving reliability.
Solution Approach 2:
The sub-distribution box acts as an intermediary between the main distribution box and core loads. During grid outage, the energy storage unit directly powers the sub-distribution box, which then supplies power to core loads, isolating the interruption from the main grid connection and maintaining uninterrupted power supply to essential devices.
2Object-affected harmful factors
If the grid-connected port stops supplying power during grid outage, then power safety is improved, but power supply continuity to loads is worsened
Solution Approach 1:
The system dynamically switches between grid-connected mode and off-grid mode based on grid status. The grid-connected/off-grid socket with bypass switch automatically transitions the power supply path, allowing the energy storage unit to take over when grid power is lost, thus maintaining power supply continuity while ensuring safety through automatic disconnection.
Solution Approach 2:
The system pre-configures dual connection paths (grid-connected port and off-grid port) before outage occurs. The bypass switch is pre-positioned to enable automatic transition, so when grid power fails, the system can immediately switch to off-grid power supply without interruption or manual intervention.
3Device complexity
If manual switching of plug is required to restore power supply during grid outage, then system complexity is reduced, but ease of operation is worsened
Solution Approach 1:
The system performs automatic self-switching between grid-connected and off-grid modes through the bypass switch and control circuitry. When grid outage is detected, the system automatically transitions power supply without requiring user intervention, making the system easy to operate while managing the complexity internally through automated protection and switching mechanisms.
Data Source
AI summary
Provided is an energy storage power supply system. A grid-connected receptacle of a grid-connected/off-grid socket is connected to a grid-connected port of an all-in-one energy storage unit. An off-grid receptacle of the grid-connected/off-grid socket is connected to an off-grid port of the all-in-one energy storage unit. A bypass switch of the grid-connected/off-grid socket is connected between the grid-connected receptacle and the off-grid receptacle. The bypass switch is configured to be switched on in response to a grid-connected operation mode; and further configured to be switched off in response to a detection of a power outage of a grid and switching of the all-in-one energy storage unit to an off-grid operation mode, maintaining power supply continuity during the switching.