Solar-Powered Hydrogen Production and Battery Charging System
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Solution Overview
Problem
Current hydrogen production systems for fuel cell electric vehicles (FCEVs) and battery charging are not optimized for energy efficiency and rely on fossil fuels, limiting their potential as a pollution-free and renewable-energy powered transportation system.
Innovation Solution
An integrated solar-powered system that combines a photovoltaic system with a high-pressure electrolyzer and metal-hydride compressor to produce hydrogen at 700 bar, while also optimizing battery charging for lithium-ion batteries, using low-grade solar thermal energy to boost hydrogen pressure and integrate energy storage and transfer for efficient renewable energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If fossil fuel-based hydrogen production and battery charging systems are used, then current infrastructure and technology can be utilized, but energy efficiency is poor and environmental pollution increases
Solution Approach 1:
The patent combines hydrogen production, hydrogen compression, and battery charging into a single integrated solar-powered system. The photovoltaic array simultaneously powers the electrolyzer for hydrogen production and the battery charger, while the metal hydride compressor uses thermal energy from the electrolyzer to compress hydrogen. This merging eliminates separate fossil fuel-based systems and optimizes overall energy efficiency.
Solution Approach 2:
The solar-powered system performs multiple functions: generating electricity for electrolysis and battery charging, producing hydrogen, compressing hydrogen to high pressure, and storing hydrogen. The metal hydride material serves dual purposes as both a compression medium and a storage medium. This multi-functionality reduces the need for separate infrastructure and improves energy utilization.
2Stress or pressure
If high-pressure hydrogen production is achieved through conventional compression methods, then hydrogen can be stored and dispensed, but energy consumption increases significantly
Solution Approach 1:
The patent replaces conventional mechanical compression systems with a metal hydride-based compression system. Instead of using mechanical compressors that consume significant electrical energy, the system uses the thermal energy from the electrolyzer to drive the metal hydride compression reaction, which naturally compresses hydrogen to high pressure through thermodynamic processes.
Solution Approach 2:
The system changes the temperature parameter to drive the compression process. By utilizing thermal energy from the electrolyzer, the metal hydride material undergoes temperature-induced phase changes that enable high-pressure hydrogen compression without mechanical work input, significantly reducing compression energy consumption.
3Adaptability or versatility
If solar energy is used to power both hydrogen production and battery charging, then renewable energy utilization increases, but system complexity increases
Solution Approach 1:
The patent combines hydrogen production, hydrogen compression, and battery charging into a single integrated solar-powered system. The photovoltaic array simultaneously powers the electrolyzer for hydrogen production and the battery charger, while the metal hydride compressor uses thermal energy from the electrolyzer to compress hydrogen. This merging eliminates separate fossil fuel-based systems and optimizes overall energy efficiency.
4Use of energy by moving object
If metal-hydride compressor is used for hydrogen compression, then compression energy is reduced, but the system requires thermal energy input
Solution Approach 1:
The patent recovers thermal energy that would otherwise be wasted from the electrolyzer process and uses it to drive the metal hydride compression. By capturing and utilizing this thermal energy for compression, the system eliminates the need for separate compression energy input while improving overall energy efficiency.
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 system achieves improved energy efficiency and purity in hydrogen production, enabling renewable high-pressure hydrogen fueling for FCEVs and efficient battery charging for EREVs, reducing environmental impact and reliance on fossil fuels.
Implementation Method 1
An integrated solar-powered system that combines a photovoltaic system with a high-pressure electrolyzer
Implementation Method 2
electricity may be used to drive a high-pressure electrolyzer that produces hydrogen
Implementation Method 3
The hydrogen pressure may be boosted to a final compression. In one embodiment, the pressure may be boosted using a metal-hydride compressor
Data Source
AI summary
One embodiment of the invention includes a photovoltaic system that provides both electricity and low-grade heat, together with many options of utilizing the energy. The electricity may efficiently be used to drive a high-pressure electrolyzer that produces hydrogen. The hydrogen pressure may be boosted to a final compression of at least 700 bar. In one embodiment the pressure may be boosted using a metal-hydride compressor and stored. The stored high pressure hydrogen may be used to fill fuel-cell electric vehicle (FCEV) tanks. The electricity can also be used to efficiently charge the batteries in an extended range electric vehicle (EREV).