Photovoltaic EV Charging Control for Surplus Energy Routing
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Solution Overview
Problem
The inefficiency of using photovoltaic energy in electric vehicle charging systems, where excess energy goes unused when there is no charging requirement, leading to invalid consumption and reduced availability of renewable energy.
Innovation Solution
A charging method and apparatus that dynamically adjust the power supply strategy of a photovoltaic assembly based on current power requirements, using photovoltaic energy for charging when available, storing it in batteries, and transmitting it to the grid when not needed, optimizing energy use and reducing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If photovoltaic energy is used for charging electric vehicles, then the availability of renewable energy is improved, but the energy is wasted when there is no charging requirement
Solution Approach 1:
The system performs preliminary action by storing photovoltaic energy in batteries when there is no charging requirement. The energy management module detects the charging status and directs excess photovoltaic energy to the battery storage system in advance, ensuring the energy is preserved for future use rather than being wasted.
Solution Approach 2:
The battery system acts as an intermediary between the photovoltaic assembly and the power grid. When photovoltaic energy is generated but no vehicles are charging, the battery stores this energy. When vehicles need charging, the battery releases the stored energy, thus mediating the mismatch between energy generation and consumption timing.
2Loss of energy
If photovoltaic energy is stored in batteries for later use, then energy waste is reduced, but the device complexity increases
Solution Approach 1:
The battery system serves multiple functions: it stores photovoltaic energy when generation exceeds demand, supplies power when vehicles need charging, and can be charged from the power grid when photovoltaic energy is insufficient. This multi-functionality justifies the added complexity by providing flexible energy management across different operating conditions.
Solution Approach 2:
The system dynamically adjusts its operation mode based on real-time conditions. The energy management module continuously monitors photovoltaic output, vehicle charging status, and battery charge level, then dynamically switches between charging vehicles from photovoltaic energy, storing energy in batteries, or drawing from the power grid, optimizing energy utilization under varying conditions.
3Productivity
If the power supply strategy is dynamically adjusted based on power requirements, then energy utilization efficiency is improved, but the control complexity increases
Solution Approach 1:
The energy management module implements feedback control by continuously monitoring the charging status of vehicles, the output of the photovoltaic assembly, and the charge level of batteries. Based on this feedback, the module automatically adjusts the power supply strategy to optimize energy utilization, such as switching between photovoltaic charging, battery discharge, and grid connection.
Solution Approach 2:
The system performs self-service through automated energy management. The energy management module independently determines the optimal power supply configuration based on current conditions without requiring manual intervention. It automatically directs photovoltaic energy to charging vehicles, stores excess energy in batteries, or connects to the power grid when needed, enabling the system to manage itself efficiently.
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
This approach ensures that photovoltaic energy is fully utilized, reducing waste and improving its availability while meeting charging demands, even when the energy is insufficient, by combining battery and grid power when necessary.
Implementation Method 1
the electricity generated by the photovoltaic leaves unused when no car needs to be charged
Data Source
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AI summary
The present application relates to a charging method, a charging apparatus, electronic device and a computer program product. The method includes obtaining a power requirement at current moment; adjusting a power supply strategy of a photovoltaic assembly according to the power requirement to meet the power requirement at current moment, and determining whether there is a charging requirement in the power requirement at current moment, if there is a charging requirement at current moment, charging the vehicle with a photovoltaic electric energy; if not, storing the photovoltaic electric energy in a battery and/or adjusting the photovoltaic electric energy according to power grid parameters and transmitting to a power grid. Therefore, the power supply strategy of the photovoltaic assembly can be flexibly adjusted, taking full use of the photovoltaic electric energy generated by the photovoltaic assembly, reducing the idle of the photovoltaic electric energy, reducing the energy waste, and meeting the power requirement at different times.