Stand-alone energy supply facility equipped with vehicle hydrogen fuel supply unit and electric vehicle charger harnessing sunlight

Patent metadata

Field	Value
Publication number	US-2017207745-A1
Application number	US-201515315555-A
Country	US
Kind code	A1
Filing date	Feb 4, 2015
Priority date	Jun 13, 2014
Publication date	Jul 20, 2017
Grant date	—

Abstract

A self-contained energy supply facility can supply an automotive hydrogen fuel that has been produced by utilizing solar energy, and can also supply electrical energy for an electric vehicle that has been produced by utilizing solar energy. The self-contained energy supply facility is characterized in that a concentrator panel for solar energy that includes a solar tracker is installed on a roof or the like within the energy supply facility, the concentrator panel separately concentrates infrared light whereby the solar energy can be easily converted into heat, and visible light whereby the solar energy can be easily converted into electricity, the infrared light is removed in the form of heat, introduced into a medium-temperature steam electrolyzer to produce hydrogen, the hydrogen is supplied to a hydrogen-fueled vehicle that uses hydrogen as a fuel through an automotive hydrogen fuel supply unit, and the visible light is converted into electricity using a concentrator cell of the concentrator panel, and supplied to an electric vehicle.

First claim

1 . A self-contained energy supply facility comprising an automotive hydrogen fuel supply unit and an electric vehicle charger that utilize sunlight, the energy supply facility being characterized in that a concentrator panel unit for solar energy that includes a solar tracker is installed on a roof within the energy supply facility, a concentrator grid included in the concentrator panel unit separately concentrates infrared light whereby the solar energy can be easily converted into heat, and visible light whereby the solar energy can be easily converted into electricity, the infrared light is removed in the form of heat, stored in a boiler that utilizes concentrated light, and introduced into a medium-temperature steam electrolyzer to produce hydrogen, the hydrogen is stored in a hydrogen tank in a pressurized state, and can be supplied to a hydrogen-fueled vehicle that uses hydrogen as a fuel through the automotive hydrogen fuel supply unit, and the visible light is converted into electricity using a concentrator cell, stored in an electrical storage device, and can be supplied to an electric vehicle through the electric vehicle charger.

2 . A self-contained energy supply facility comprising an automotive hydrogen fuel supply unit and an electric vehicle charger that utilize sunlight, the energy supply facility being characterized in that a concentrator panel unit for solar energy that includes a solar tracker is installed on a roof within the energy supply facility, each of a plurality of concentrator grids included in the concentrator panel unit includes a Fresnel lens that is provided on a light-incident side of a housing, and concentrates sunlight, visible light included in the sunlight that has been concentrated through the Fresnel lens is reflected by a visible light reflection filter that is provided to a middle part of the housing, the visible light reflection filter being tilted by 45° with respect to the Fresnel lens, and reflecting only visible light, the visible light reflected by the visible light reflection filter enters a concentrator cell through a correction prism lens, and is converted into electricity, the electricity is stored in an electrical storage device by means of a system controller via a lead, and can be supplied to an electric vehicle by means of a power supply controller and the electric vehicle charger, infrared light that has passed through the visible light reflection filter is reflected and concentrated by an infrared light reflection mirror that is provided to a lower part of the visible light reflection filter, and is tilted by 45° with respect to the Fresnel lens, concentrated on an optical fiber inlet through a correction condenser lens, and applied to a heat-exchange pipe of a boiler that utilizes concentrated light, water that is circulated through the heat-exchange pipe is heated to produce steam, the steam is converted into medium-temperature steam using a steam heater, the medium-temperature steam is introduced into a medium-temperature steam electrolyzer to produce hydrogen and oxygen, and the hydrogen is stored in a hydrogen tank, and can be supplied to a hydrogen-fueled vehicle from the hydrogen fuel supply unit via a secondary pressurization device.

3 . The self-contained energy supply facility according to claim 1 , comprising a concentrator panel that concentrates sunlight, wherein each concentrator grid of the concentrator panel forms a hollow housing, a Fresnel lens that concentrates sunlight is provided on a light-incident side of each housing, sunlight that has been concentrated through the Fresnel lens is incident on a visible light reflection filter that is provided to a middle part of each housing, the visible light reflection filter being tilted by 45° with respect to the Fresnel lens, and reflecting only visible light, a concentrator cell is provided to a side wall of each housing that is situated opposite to the visible light reflection filter through a correction prism lens, the concentrator cell is connected to an electrical storage device through a control board via a lead, an infrared light reflection mirror is provided to a lower part of the visible light reflection filter, the infrared light reflection mirror being tilted by 45° with respect to the Fresnel lens, an optical fiber inlet is provided to the side wall of each housing that is situated opposite to the infrared light reflection mirror through a correction condenser lens, an optical fiber that has the optical fiber inlet is connected to a thermoelectric converter that is included in a boiler that utilizes concentrated light, and the hollow housings formed by the concentrator grids are arranged in a rightward direction, a leftward direction, an upward direction, and a downward direction to form a panel-shaped plate that is fitted into a concentrator panel frame.

4 . The self-contained energy supply facility according to claim 1 , comprising a concentrator panel that concentrates sunlight, wherein each concentrator grid of the concentrator panel forms a hollow housing, a Fresnel lens that concentrates sunlight is provided to a light-incident side of each housing, the sunlight that has been concentrated through the Fresnel lens is reflected by a visible light reflection filter that is provided to a middle part of each housing, the visible light reflection filter being tilted by 45° with respect to the Fresnel lens, and reflecting only visible light, the sunlight that has been reflected by the visible light reflection filter enters a concentrator cell through a correction prism lens, and is converted into electricity, the electricity is stored in an electrical storage device through a control board via a lead, and infrared light that has passed through the visible light reflection filter is reflected and concentrated by an infrared light reflection mirror that is provided to a lower part of the visible light reflection filter, and is tilted by 45° with respect to the Fresnel lens, concentrated on an optical fiber inlet through a correction condenser lens, and stored in the form of heat in a boiler that utilizes concentrated light that includes a thermoelectric converter through an optical fiber.

5 . The self-contained energy supply facility according to claim 1 , comprising a boiler that utilizes solar energy, wherein each of a plurality of concentrator grids included in a concentrator panel used for the self-contained energy supply facility forms a hollow housing, a Fresnel lens that concentrates sunlight is provided to a light-incident side of each housing, sunlight that has been concentrated through the Fresnel lens is reflected by a visible light reflection filter that is provided to a middle part of each housing, the visible light reflection filter being tilted by 45° with respect to the Fresnel lens, and reflecting only visible light, visible light that has been reflected by the visible light reflection filter enters a concentrator cell through a correction prism lens, and is converted into electricity, the electricity is stored in an electrical storage device through a control board via a lead, infrared light that has passed through the visible light reflection filter is reflected and concentrated by an infrared light reflection mirror that is provided to a lower part of the visible light reflection filter, and is tilted by 45° with respect to the Fresnel lens, concentrated on an optical fiber inlet through a correction condenser lens, and applied to a heat-exchange pipe through an inlet of a boiler that utilizes concentrated light to heat water that is circulated through the heat-exchange pipe to produce high-temperature steam, and the high-temperature steam is stored in a boiler tank that is covered with an insulating material.

6 . The self-contained energy supply facility according to claim 1 , wherein a p

Assignees

• Univ Kyushu Nat Univ Corp
• Tokushu Giken Kinzoku Co Ltd

Inventors

• Ishihara Tatsumi
• YAMAYOSHI Tetsu
• Koide Shigenori
• Koseki Junichi

Classifications

• H02S40/22

  Light-reflecting or light-concentrating means (directly associated with the PV cell or integrated with the PV cell H10F77/42) · CPC title

• B60S5/02

  Supplying fuel to vehicles; General disposition of plant in filling stations (apparatus for transferring measured quantities of petrol, oil, or the like from storage space to vehicles B67D) · CPC title

• H02S20/10

  Supporting structures directly fixed to the ground (H02S20/30 takes precedence) · CPC title

• H02S20/32

  specially adapted for solar tracking · CPC title

• H02S10/30 Primary

  Thermophotovoltaic systems (photovoltaic cells specially adapted for conversion or sensing of infrared [IR] radiation H10F10/00; thermoelectric devices H10N10/00) · CPC title