Vehicle-Linked AC Power Switching for Phase-Mismatched Home Supply
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Solution Overview
Problem
Existing power supply systems face challenges in simultaneously supplying alternating current power from both a system power supply and a vehicle to a load without a complex system configuration, as the phases of power from these sources differ.
Innovation Solution
A power supply system incorporating electromagnetic switches and a control device to selectively switch between power sources, allowing alternating current power from a vehicle to be supplied to a load with a simple system configuration, including features like a current breaker, load breaker, power conversion device, and switches to manage power flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If alternating current power is simultaneously supplied from both system power supply and vehicle to power load, then power supply flexibility is improved, but system complexity increases due to phase differences
Solution Approach 1:
The patent employs dynamic switching mechanisms (first switch and second switch) that enable the system to adapt its configuration in real-time. The switches dynamically connect or disconnect the power conversion device between the system power supply and power load, allowing the system to flexibly transition between different power supply modes (system power supply only, vehicle power only, or combined power supply) based on operational requirements, thereby resolving the contradiction between flexibility and complexity.
Solution Approach 2:
The patent introduces a power conversion device as an intermediary component between the vehicle and the power load. This intermediary device handles the phase difference issue by converting power from the vehicle, enabling safe simultaneous supply with system power supply without requiring complex phase synchronization circuits, thus achieving power supply flexibility while maintaining relatively simple system configuration.
2Adaptability or versatility
If power conversion device is added to enable vehicle power supply, then power supply capability is improved, but device complexity increases
Solution Approach 1:
The power conversion device serves multiple functions within the system: it converts power from the vehicle for supply to the power load, and also enables simultaneous power supply from both the system power supply and the vehicle. By designing this single component to handle multiple operational scenarios, the patent achieves versatile power supply capability without proportionally increasing system complexity.
Solution Approach 2:
The first switch and second switch dynamically control the connection state of the power conversion device. When vehicle power supply is needed, the switches configure the circuit to route power through the conversion device; when not needed, the device can be disconnected or bypassed. This dynamic control allows the system to maintain simplicity while enabling advanced power supply capabilities on demand.
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 the supply of power from a vehicle to a load with a straightforward system configuration, enhancing flexibility and efficiency in power management.
Implementation Method 1
The first switch is configured to switch electrical connection and disconnection between the current breaker and the load breaker. The second switch is configured to switch electrical connection and disconnection between the first switch and the power conversion device and switch electrical connection and disconnection between the load breaker and the power conversion device.
Data Source
AI summary
A power supply system supplies alternating current power from a system power supply to a load of a house. A first electromagnetic switch is configured to switch electrical connection and disconnection between the leakage breaker and the overcurrent breaker. A second electromagnetic switch is configured to switch electrical connection and disconnection between the first electromagnetic switch and the power supply device and switch electrical connection and disconnection between the overcurrent breaker and the power supply device.