Photovoltaic Power Switch Circuit for Threshold-Based Startup
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Solution Overview
Problem
Existing power generation systems for solar photovoltaic panels waste energy due to improper timing of system startup, leading to inefficiencies in power generation and consumption.
Innovation Solution
A power switch circuit with a detection circuit and switch circuit that turns on when the solar photovoltaic panel output exceeds a preset threshold, ensuring power is only supplied to the load when sufficient, thereby avoiding early or late startups and reducing detection circuit power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the voltage detection point is set higher to prevent consuming external power, then the power generation system can avoid consuming power energy of external power grids or batteries, but the output energy of solar photovoltaic panels is wasted and photovoltaic power generation efficiency is reduced
Solution Approach 1:
The patent changes the detection parameter from voltage to power (P=UI). The detection circuit detects the output power of the solar photovoltaic panel through current detection and power calculation, and compares it with the preset threshold power consumption of the power generation system. This parameter change enables accurate determination of whether the panel can support system operation, avoiding both premature startup (consuming external power) and delayed startup (wasting panel energy), thus resolving the contradiction between preventing external power consumption and maintaining photovoltaic generation efficiency
Solution Approach 2:
The patent implements a feedback mechanism where the detection circuit continuously monitors the output power of the solar photovoltaic panel, compares it with the preset threshold, and adjusts the startup timing accordingly. The control circuit receives the detection signal and adjusts the power generation system startup timing based on whether the panel output meets the system power consumption requirements, optimizing both external power consumption and photovoltaic energy utilization
2Productivity
If the voltage detection point is set lower to improve photovoltaic power generation efficiency, then the output energy of solar photovoltaic panels is utilized more fully, but the power generation system may consume power energy of external power grids or batteries due to insufficient panel power
Solution Approach 1:
The patent changes the detection parameter from voltage to power (P=UI). The detection circuit detects the output power of the solar photovoltaic panel through current detection and power calculation, and compares it with the preset threshold power consumption of the power generation system. This parameter change enables accurate determination of whether the panel can support system operation, avoiding both premature startup (consuming external power) and delayed startup (wasting panel energy), thus resolving the contradiction between preventing external power consumption and maintaining photovoltaic generation efficiency
Solution Approach 2:
The patent implements a feedback mechanism where the detection circuit continuously monitors the output power of the solar photovoltaic panel, compares it with the preset threshold, and adjusts the startup timing accordingly. The control circuit receives the detection signal and adjusts the power generation system startup timing based on whether the panel output meets the system power consumption requirements, optimizing both external power consumption and photovoltaic energy utilization
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
The solution effectively prevents energy waste by optimizing startup timing, enhancing the power generation capacity and utilization rate of solar photovoltaic panels.
Implementation Method 1
a solar photovoltaic panel (11), a detection circuit (12) and a switch circuit (13)... the solar photovoltaic panel (11) is configured to provide an electrical signal to the detection circuit (12)
Data Source
Figure 1~3
Figure 4~5
AI summary
The present application provides a power switch circuit and a power switch. The power switch circuit includes a solar photovoltaic panel, a detection circuit and a switch circuit, wherein the detection circuit is connected with the solar photovoltaic panel and the switch circuit respectively, the solar photovoltaic panel is configured to provide an electrical signal to the detection circuit, the detection circuit is configured to detect whether the power in the electric signal exceeds a preset threshold, and when the power exceeds the preset threshold, the detection circuit outputs a first control signal to the switch circuit to turn on the switch circuit; when the switch circuit is turned on, the solar photovoltaic panel supplies power to the load through the switch circuit, and the switch circuit feeds back a second control signal to the detection circuit so that the detection circuit stops working. By detecting the power of the solar photovoltaic panel in the above way, the waste of power energy caused by the solar photovoltaic panel being started too early or too late can be avoided, and when the solar photovoltaic panel supplies power to the load, the detection circuit is controlled to stop working, thereby improving the power generation capacity and utilization rate of the solar photovoltaic panel.