Solar Power Supply Control for Adaptive Load and Battery Heating
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Solution Overview
Problem
Solar cell power supply systems struggle to adaptively adjust energy distribution based on changing power supply needs, leading to inefficiencies and potential operational failures, particularly in outdoor and cold environments.
Innovation Solution
A power supply system control method that dynamically adjusts energy distribution among a solar cell, load module, energy storage module, and heating module using switching circuits and regulating circuits to stabilize voltages and currents, ensuring the solar cell operates at maximum output power and maintains efficient charging of the energy storage module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the solar cell works at maximum output power point to quickly charge the energy storage module, then charging efficiency is improved, but the system cannot adapt to varying power supply needs and may cause power loss during control processes
Solution Approach 1:
The patent implements dynamic mode switching between different operating states (first mode for preheating, second mode for normal charging, third mode for power deficiency) based on real-time temperature and power conditions. This allows the system to adaptively adjust energy distribution according to varying environmental conditions and power supply needs, resolving the contradiction between maintaining maximum charging efficiency and adapting to changing requirements.
Solution Approach 2:
The control system continuously monitors temperature parameters and power supply conditions, then adjusts the operating mode accordingly. When the energy storage module temperature is below the first threshold, the system switches to preheating mode; when temperature meets requirements, it transitions to normal charging mode. This feedback mechanism ensures the system adapts to power supply needs while maintaining efficient operation.
2Reliability
If the energy storage module is preheated before charging in cold conditions, then the lifespan of the energy storage module is extended, but energy distribution management becomes complex and may cause the solar cell to not work at maximum output
Solution Approach 1:
The patent divides the energy distribution process into distinct operational modes: preheating mode (first mode) where all solar energy directs to heating, and normal charging mode (second mode) where energy flows to charging. This segmentation simplifies control logic by using clear temperature thresholds to determine mode transitions, reducing management complexity while ensuring the solar cell operates at maximum output in each mode.
Solution Approach 2:
The system uses temperature parameter changes as the basis for mode switching. When the energy storage module temperature is below the first temperature threshold, the system enters preheating mode; when it reaches or exceeds the threshold, it switches to normal charging mode. This parameter-based control simplifies the energy distribution management by providing clear, objective criteria for decision-making.
3Temperature
If the solar cell powers both the load module and heating module simultaneously, then the energy storage module can be preheated, but the system may not have sufficient power for both functions
Solution Approach 1:
The patent implements preliminary preheating action before normal charging begins. When the energy storage module temperature is below the first threshold, the system prioritizes heating by directing all solar cell output to the heating module, ensuring the module reaches suitable temperature before charging starts. This preliminary action prevents power deficiency during charging by preparing the energy storage module in advance.
Solution Approach 2:
The system uses periodic mode switching based on temperature conditions. It alternates between preheating mode (when temperature is low) and normal charging mode (when temperature is sufficient). This periodic action ensures that the solar cell has sufficient power for each function at the appropriate time, avoiding the need to simultaneously power both heating and charging when total power is limited.
4Adaptability or versatility
If the system switches between different operating modes dynamically, then adaptability to power supply needs is improved, but control complexity increases and may cause power loss during switching
Solution Approach 1:
The patent uses clear temperature parameter thresholds to determine mode transitions. The first temperature threshold triggers switching between preheating and normal charging modes, while the second threshold triggers switching between normal charging and power deficiency modes. These explicit parameter-based switching criteria simplify control logic and reduce complexity by providing objective, easy-to-monitor decision points.
Solution Approach 2:
The control system continuously monitors temperature and power conditions, then adjusts operating modes accordingly. This feedback mechanism ensures smooth transitions between modes based on actual system state, improving adaptability while maintaining simple control logic through clear conditional rules rather than complex algorithms.
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
Ensures preferential power supply to the load module and efficient charging of the energy storage module, improving energy utilization and solar cell efficiency by adapting to varying power demands and environmental conditions.
Implementation Method 1
the heating module heats an energy storage module
Implementation Method 2
a solar cell powers a load module and a heating module
Data Source
AI summary
A power supply system control method and a power supply system are provided. The control method includes: controlling a power supply system to enter a first mode based on a power parameter, a temperature parameter, and an electric quantity parameter; and during the first mode, controlling a first regulating circuit to regulate a second switching circuit such that an input voltage of the load module is adjusted to a target voltage, and controlling a first voltage loop to regulate a first switching circuit based on the power parameter, to stabilize an output voltage of a solar cell at a first threshold voltage, where the first threshold voltage is close to an output voltage corresponding to maximum output power of the solar cell.