JP3168605U - Photovoltaic generator structure for charging electric vehicles - Google Patents

Abstract

The present invention provides a solar power generator structure mounted on an electric vehicle and housed compactly as a charger for the electric vehicle. A storage box is provided on a rack attached to a rack stay on a roof of an automobile, and a storage box whose side or upper surface is openable is installed, and a sheet-shaped flexible solar cell is stored in the storage box. [Selection diagram] FIG.

Description

  The present invention relates to a solar power generator structure for an electric vehicle that can be easily charged at a campsite or a stop when going out to a remote place by an electric vehicle.

  Select the summary of the published patent gazette and the published utility model gazette as the search items, the claims and the full text of the gazette, and search for solar power generation systems for electric vehicles, mobile solar cells for vehicles, flexible solar cells for vehicles as search keywords I searched, but the number of hits was zero. Similarly, when searching for electric vehicles and solar power generation systems as keywords, one item could be searched. It was a solar power generation system in which a solar cell is attached to a highway roof and power is supplied in a parking area on the highway (Patent Document 1).

  Next, in the published patent publication front page search, electric vehicles and charging solar cells were searched as keywords. A solar cell panel was simply pasted (Patent Document 2). When searching an open patent gazette and an open utility model gazette using an electric vehicle and a solar cell for charging as keywords, the same patent document 2 was searched, and other patents and utility models were not searched.

Furthermore, with the keywords for electric vehicles and solar cells as keywords, we searched again in the summary of the published patent gazette and published utility model gazette, in the claims, and in the full gazette, and found 9 hits. The patent technology is a patent for a battery power storage device that suppresses overcharging of lithium batteries and storage battery cells, and there is nothing similar to the present invention (patent documents 3 and 4).

JP 2003-86821 A Japanese Patent Laid-Open No. 8-11905 JP 2002-42863 A JP 2000-350378 A

  On the other hand, a portable solar generator has been released as a mobile solar unit (Technical Document 1). That is, a portable solar generator using a flexible amorphous solar cell has been announced. A film-like solar cell sheet is fused with a projector screen winding technology. Power generation is possible everywhere, and it is considered to be used as an information terminal at the time of disaster, as equipment for schools and public halls, and in places where there is no power source for events and leisure.

In addition, a camper equipped with a flat solar cell panel found on a roof of a general house, which has been conventionally developed, has been put into practical use. A compound solar cell is mounted by industry-academia collaboration technology, and the South African Solar Challenge 2010 runs through a 4000 km course at 90 km per hour with an output of 1.8 kW (Technical Reference 2).

Technical literature

Technical Literature 1

Fuji Electric Holdings, press release November 2, 2010

Technical Literature 2

Sharp News Release October 4, 2010

  In the above background art, it turned out that it is not put into practical use as a sheet-like light loadable solar generator for charging for an electric vehicle. Solar power generators that are compact when installed in vehicles and that can be deployed several times more than the area loaded on vehicles when generating solar power, and that can charge the batteries of electric vehicles, have not yet been developed It was at the place.

  The inventor has pursued a reduction in weight and compactness for use as a charger for 1 electric vehicle, 2 deployment of a solar power generator mounted in an electric vehicle and housed in a compact, simple and wide condensing area As a result, the present invention has been repeatedly studied with regard to the characteristics, storage properties after charging of the solar power generator, and the like.

  The first is a solar cell structure for charging that can expand to 2 to 4 times the area of a solar cell for charging an electric vehicle housed on the roof of a vehicle. The second is a satellite of Orihime / Hikoboshi. The solar cell deployment structure, or fan-shaped storage and deployment, and the third, the unwinding and winding structure like a blind, and the deployment structure of a Miura-folded solar cell, etc. were developed to arrive at the present invention. It was.

  As a one-rotation method, the rectangular sheet-shaped solar cell is placed in a frame, and a rotating shaft is provided near each corner edge, and the four frames are rotated around that axis. A structure that can be used. It is easy to enlarge the area at least twice. The rotating shaft has a structure that can store the electric wire connected to the rechargeable battery. In this case, it can be deployed on the roof of the electric vehicle.

  A sheet-like solar cell folded like two fans is opened to enlarge the area several times or more. It is easy to use a film-like amorphous battery sheet. As shown in FIG. 2, even a structure that is linearly folded in one direction can be expanded to an area five times as large. If the binding is removed, a method of unfolding with a spring may be adopted. In this case, it extends from the roof of the electric vehicle and deploys toward sunlight.

  3 is charged by pulling out the photovoltaic power generation sheet surface that is rolled up and stored like a blind in a window of a house toward sunlight. When charging is completed, the vehicle can be moved by being stored on the roof of the electric vehicle.

  4 Further, when it is desired to expand the magnification by 10 or more times, the sheet-like photovoltaic cell can be folded and stored like a Miura fold, and by pulling one end, as shown schematically in FIGS. 6 and 7, the magnification is 15 times. The structure enables the development of the area.

  The deployment structure of photovoltaic cells can be selected for various types of electric vehicles and according to the amount of power generation required. In the case of solar power generation, the amount of power generation increases as the area of the solar cell increases, so the total area is calculated and installed in accordance with the structure of the vehicle. The power generation efficiency is increased by deploying the folded solar cell toward the sun. FIG. 4 and FIG. 5 are examples of this, and the power generation efficiency is high because sunlight can be received for a long time by deploying obliquely from the roof of the car toward the ground, rather than deploying horizontally or vertically on the ground. It is also possible to have a support rod structure at the tip or middle of the sheet-like solar cell to be developed.

Schematic diagram of solar cell sheet deployed twice in area a Schematic diagram of a solar cell sheet in which 5 sheets are folded and overlapped like a fan b Schematic diagram of a solar cell sheet developed by pulling and unfolding a folded and stored solar cell a Schematic diagram of a solar cell developed in an arc shape so as to open a fan b Schematic cross-sectional diagram of a solar cell in the process of developing a bent portion Schematic diagram of solar cell sheet unfolded from the roof of a small electric vehicle for charging Schematic diagram of how to install and deploy a camping electric vehicle on the roof Schematic diagram showing how to fold Miura folds, solid lines indicate peaks and broken lines indicate valley folds Schematic diagram in the middle of unfolding of Miura folding, a slight development, b middle development

In the case of a vehicle with a wide roof, a sheet-like solar cell attached to the roof can be rotated around the rotation axis in a plane and expanded to a double area to generate power on the entire surface of the roof. This will be described with reference to FIG. FIG. 1 shows four sheet-like solar cells. 1 is a rotation axis, 2 is a left rotation and enters under 5. 3 fits under 4 by turning right. It is convenient when the solar cell can be expanded to double the area. In this case, it is necessary to provide a wiring structure in which the electric wire is accommodated and rotated at the rotating shaft.

Next, we will show two examples of deployment using the folding method. 2a and 2b show a method of folding linearly, and FIG. 3 shows an example of a method of folding like a fan. In the former case, a rectangular solar cell folded can be unfolded and expanded as shown in FIG. 2, and can be expanded to an area five times the folding area.

  FIG. 3 is a schematic diagram of a fan, and this development is also an advantageous development in terms of area. If folded and folded as shown in FIG. 3b, the expansion ratio of the area becomes large. The solar cell housed at the end of the roof of the electric vehicle can be developed and expanded into a quarter circle as shown in FIG. FIG. 4 is a schematic diagram in which four sheet-like solar cells having the structure of FIG. 2 are developed from a small electric vehicle.

  FIG. 5 schematically illustrates the attachment of a large electric vehicle used for leisure such as camping to the roof. On a relatively flat roof, using a rack stay, attach an aluminum rack, provide a box containing a folded solar cell or a flexible solar cell sheet, and pull out the solar cell from it when charging, The tip is fixed on the ground to generate and charge.

  There is a folding method that can be expanded to 15 times the area. Miura fold. FIG. 6 is a schematic plan view in which photovoltaic cell sheets are arranged in five rows and three rows of Miura folds. When folded so that the solid line is a mountain and the broken line is a valley, the solar cell sheets overlap each other as shown in FIG. 7a.

  A photovoltaic power generation sheet is affixed to a place surrounded by a dotted line and a solid line which are inclined by about 5 degrees in FIG. When these 15 solar battery sheets are folded into Miura folds, the area becomes 1/15. In the folded state, it can be moved on the roof of an electric vehicle. If the weather is fine, the end can be pulled, unfolded and deployed as shown in FIGS. 7a to 7b, drooped from the electric vehicle to generate power, and the battery can be charged.

  This will be described with reference to FIG. A frame was installed on the roof of the electric vehicle with eight rack stays. On top of that, a box containing a solar cell sheet was attached. Toward the side of the electric vehicle, a solar cell sheet outlet was provided to allow removal and storage. After arriving at the campsite, a sheet-like solar cell sheet was pulled out from the solar cell storage box toward sunlight to charge the consumed power. The tip was fixed to the ground. When the sun is high, it can be attached to a support bar to make the slope gentler. The drawer was done by hand and the storage was by the spring force.

  Electric vehicles are becoming popular. However, the mileage is still short compared to gasoline cars. In the future, infrastructure development will progress and charging at mass retailers and homes will be possible. However, there are cases where charging is necessary in leisure activities such as camping and mountain climbing. The present invention provides a structure capable of storing and deploying a solar power generator in an electric vehicle so that the electric vehicle can be easily charged when going out. There is a possibility of use until the mileage of an electric vehicle after charging is comparable to that of a gasoline vehicle.

1 Rotating shaft 2 of 4 solar cells 2 Solar cell sheet left rotated from under 5 3 Solar cell sheet 4 rotated right from under 4 4 Solar cell sheet 5 2 on top of 3 Solar cell sheet on top 6 Schematic diagram of five solar cell sheets folded 7 Schematic diagram of flexible solar cell sheet 8 Base sheet with solar cells attached 9 Pile 10 of flexible solar cell sheets unfolded in fan shape Valley of flexible solar cell sheet developed in fan shape 11 Schematic diagram of fan frame with end of flexible solar cell sheet 12 Schematic diagram of deployment of roof of electric vehicle loaded with solar cell sheet 13 Schematic diagram of handle of electric vehicle 14 Schematic diagram of electric vehicle light 15 Schematic diagram of photovoltaic cell storage box 16 Schematic diagram of photovoltaic cell sheet unfolded Fig. 18 Schematic of installation of storage box for solar cell by pack stay 18 Aluminum frame base 19 Schematic diagram of storage box for flexible solar cell sheet winding 20 Unfolded flexible solar cell sheet 21 Plate 22 supporting solar power generation sheet Mountain fold 23 Valley fold

Claims (4)

It can be stored on the roof of an electric vehicle in a stacking method, a folding method, or a winding method, and the area can be expanded widely toward sunlight during charging. Storage and deployment structure for charging solar cells of electric vehicles characterized by being rechargeable 2. A storage and storage structure for a solar cell for charging an electric vehicle according to claim 1, wherein a storage box is installed on a rack attached by a rack stay on the roof of the electric vehicle. A flexible solar cell is used as the charging solar cell, and the charging solar cell storage and deployment structure for an electric vehicle according to claim 1 4. A storage and deployment structure for a charging solar cell for an electric vehicle according to claim 3, wherein the solar cell storage and charging deployment of the Miura fold structure is possible.

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