WO2018109524A1

WO2018109524A1 - Container based solar cell system

Info

Publication number: WO2018109524A1
Application number: PCT/IB2016/057571
Authority: WO
Inventors: Srdan CULAFIC
Original assignee: Fuduric Gmbh & Co. Kg
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2018-06-21

Abstract

A container based solar cell system that comprises at least two solar panels (SPF, SPT) which are attached to a long edge (11) of a container (13) by separated hinges 14, 15) and can be turned around their respective hinges independent from each other and folded to cover the front (F) and top (T) sides of the container. The two solar panels (SPF, SPT) can be interconnected to lie in a common plane that can be adjusted in a wide angular range, and the system has a plurality of support rods (RTC) to keep the position of the solar panels in any adjusted position. In a preferred embodiment a separate solar panel SPB) can be pivotally attached to the rear upper edge (13) of the container which can be connected to the first two solar panels and to the support rods (RTC) by further connection rods (RTB), whereby the three solar panels can be adjusted in a single step.

Description

Container based solar cell system

The invention relates to a container based solar cell system that can be used most conveniently in off grid areas in the field as a power source for a container farm alone or in combination with a plurality of similar systems.

Containers are widely used in several fields owing to their practical shapes and sizes which have been standardized in different but limited sizes. The standard sizes are optimum from the point of view of transportation and shipments as the sizes of the vehicles were adapted to receive such loads. Larger containers are ideal to form workplaces or serve as temporary accommodation in the field far away from human settlements. For special tasks container farms might be required where laboratories, cooled spaces, communication centers, etc. should be deployed in the field where there is no or only limited energy supply. Container farms require energy and the easiest way of obtaining it is the utilization of available solar energy.

US 8,539,724 B2 relates to a renewable energy system, more particularly to a solar cell arrangement which can be installed in the field and can serve as an energy supply for field applications. The system comprises a single large solar cell array surface area composed of 8 solar panels arranged in a common plane and mounted and hinged on the upper long edge of a container, and the plane is inclined by about 45° and the array is supported by a number of rods and support elements.

For transport the array should be totally disassembled, and although the structure is rather simple, the installation takes much time and effort and the array cannot be transported together with the container. Furthermore, the single large surface has a high wind resistance, the installation must be robust to resist wind pressure, and the utilization of the available space is less then optimum.

The object of the invention is to provide a different container based solar system which can be installed in an easier way, which can be transported in an almost fully assembled state and which has a better utilization of the solar energy available in the close vicinity of the container.

These objects have been attained by providing a container based solar cell system that comprises a container of substantially oblong design having a long front side, a top and a back opposite to the front side, and the front side and the top meet along a front edge and the back and the top meet along a rear edge, and an array of a plurality of juxtaposed framed solar modules of solar cells is coupled to one of the long edges with a hinged connection, and the system also comprises a plurality of rods fixed by one of their ends close to the other top edge of the container and the other ends of the rods are coupled to an upper portion of the solar cell array to fix the position thereof, wherein according to the present invention the solar array comprises two independent solar panels of rectangular shape, the solar modules constituting the solar panels having frames around them and are held by rectangular holders including the frames, wherein the front solar panel is connected to a plurality of spaced first hinges fixed to the top of the container close to the front edge, this connection is provided by means of hinge parts formed close to the upper edges of the holders associated with the front solar panel, wherein the hinges define an axis around which the upper edge of the front solar panel can be turned within a predetermined first angular range, and the top solar panel is connected to a plurality of second spaced hinges positioned in the spaces defined between the first hinges and having an axis aligned with the axis of the first hinges, and said connection to the second hinges is provided by means of hinge parts formed close to the lower edges of the holders associated with the top solar panel, wherein the top solar panel can be turned by its lower edge around the hinge axis within a predetermined second angular range, and the system comprises releasable connection rods whereby the holders of the front solar panel and the holders of the top solar panel can be rigidly interconnected to defined a common plane for the front and top solar panels; and the rods are coupled to the upper ends of the holders of the top solar panel, wherein the size of the front and top solar panels is slightly shorter than the associated front or top of the container, and in the removed position of the connection rods the font and top panels can be turned and connected temporarily to the associated front and top sides of the container.

By this design the use of two independent solar panels instead of a single larger one has the advantage of easy installation, adjustment of the angular position, and during transport the solar panels can be turned to cover the respective sides of the container and can be transported therewith, whereby there is no need of their disassembly and difficult installation each time when transport is required.

In a preferred embodiment the system comprises a third back solar panel designed similar to the front and top solar panels and it is provided with respective holders that have lower cross bars provided with hinge parts and close to the top rear edge of the container a third series of spaced hinges are provided and fixed to the container that define a hinge axis parallel to the rear upper edge around which the back solar panel can be turned within a third predetermined angular range, and the hinges for the lower ends of the rods are arranged closely in front of these hinges of the back solar panel, and from the top of the holders respective projections extend out in opposite position where the rods are coupled to the top of the holders of the top solar panel, and further connection rods are pivotally connected by one of their ends to the projections on the top of the holders of the back solar panels, and the other ends of these connection rods are pivotally connected to the connection between the rods and the holders of the top solar panel, whereby in connected state and when the front and top solar panels are united, the angular position of all of the solar panels can be adjusted.

It is preferred if the back solar panel has about the same size as the front solar panel, and in released state of the connection rods the back panel can be folded back to cover the back of the container and be temporarily connected thereto. By this design the three solar panels have a high efficiency of utilizing the available space, and the back solar panels can be folded down to the back of the container, i.e. the previously mentioned easy transportability is true even if three panels are used.

For attaining an easy adjustability of the angular position the triple connection between the top of the holders of the top solar panel and the front end of the connection rods and the upper part of the rod is provided by such a way that at the connection site respective pairs of spaced projections extend out from the upper ends of the holders, wherein the spacing allows the rod to be inserted between the projections, and the end portions of the projections above the inserted rod are pivotally connected to the front ends of the connection rods providing thereby a closed nest for the rod, furthermore a dense series of bores are provided along the length of the rod and a bolt can be inserted in the bore closest under the triple connection that fixes the array of the rods and all solar panels in any given position.

In a preferred embodiment each holder holds a respective pair of solar modules positioned vertically above each other, and respective support rods are connected to the sides of the holders of the front and top solar panels, and the support rods have one of their ends close to the hinge axis and their length is shorter than the side length of the associated holder.

It is preferred if the support rods are tubes with a profile and the connection rods have an outer profile fitting in the hollow interior of the support rods and have lengths at least as high as the united length of the support rods, and the connection between the front and top solar panels is provided by the insertion of the connection rods in the hollow interior of the support rods.

In a special horizontal arrangement the connection rods of the top solar panel and the container top can be released from the original positions and attached to a hinge arranged at the lower part of the back of the container and pivotally attached to the top of the holders of the back solar panel, and have length in which in this second connected position the back solar panel takes a horizontal plane.

It is preferred if each of the solar panels comprise respective six solar modules arranged in two rows and three columns, and the holders hold the two solar modules in a column.

In this latter design the holders comprise respective symmetrically spaced connection points for the rods and six spaced assemblies of the rods are included in total. The container based solar system according to the present invention meets all of the objects set and provides a more efficient and simply solution compared to the prior systems.

The invention will now be described in connection with preferable embodiments thereof in which reference will be made to the accompanying drawings. In the drawing:

Fig. 1 shows the perspective view of the solar cell system installed on a container in ready to use state;

Fig. 2 is the side view of the container on which the solar system can be installed;

Fig. 3 is a similar view with the solar system takes its initial state;

Fig. 4 is a simplified top view of the holders of the solar panels;

Fig. 5 shows the holders HI to H3 holding the front solar panel SPF;

Fig. 6 shows the holders H4 to H6 holding the top solar panel SPT;

Fig. 7 shows the holders H7 to H9 holding the back solar panel SP;

Fig. 8 is an enlarged detail how the holders HI and H4 are interconnected;

Fig. 8a shows the detail A of Fig 8 in section;

Fig. 9 is a simplified side view of the installation shown in Fig.l;

Fig. 10 shows a phase of the installation when the solar panels are vertical;

Fig. 11 shows a position when the solar panels are horizontal;

Fig. 12 shows a phase of the adjustment with a high angular position;

Fig. 13 is similar to Fig. 12 with a medium angular position; and

Fig. 14 is similar to the previous two figures showing the system in a low angular position.

Fig. 1 is a simplified perspective view of the solar system according to the present invention shown in the most efficient operating position, in which the frame of a container 10 has a size of about 2300 x 2300 x 5860 mm (Width x Height x Length). The upper front long edge 11 of the container 10 supports a first solar array 12 containing solar cells in a first common plane divided into two solar panels SPF and SPT and both of them comprises respective six solar modules. The last letter in the reference symbol of the solar panels designates whether the indicated solar panel is connected to or arranged at the front F, top T or back B of the container 10. Therefore the panel SPF is positioned predominantly at the front side F of the container 10 while the panel SPT is placed on the top T and the solar panel SPB is close to the rear or back side B of the container. The first six solar modules SMI to SM6 form the front solar panel SPF, further six solar modules SM7 to SM 12 form the top solar panel SPT and solar modules SM13 to SM 18 form the back solar panel SPB. Each of the solar modules SMI to 18 have respective rectangular frames around them interconnected by holders attached to the short sides of the frames.

The back solar panel SPB is arranged at and hinged in the region of the rear upper long edge 13 of the container 10, and in the position shown in Fig. 1 it is inclined backwards by the same angle of around 45°as the other two solar panels SPF and SPT. The position shown is held by hinges fixed to the top T of the container and two kinds of rods. The first rods RTB interconnect the upper edges of the back solar panel SPB and the upper edge of the top solar panel SPT. The mechanical support comprises six identical rod arrays arranged spaced evenly along the length of the container 10 so that each module has a pair of such array. The second kind of rods RTC connect in the arrangement of Fig. 1 the upper edge of the top solar panel SPT with the rear upper long edge 13 of the container 10.

The total useful solar area of the three solar panels SPF, SPT and SPB is around 30 m². In the inclined position shown in Fig. 1 the distance between the rear solar panel SPB and the united pair of solar panels SPF and SPT is sufficiently large to exclude shadowing effect during most parts of the day, especially if the container 10 is positioned in optimum direction for generating electricity.

Reference is made to Figs. 2 and 3, wherein Fig. 2 shows the front view of the container 10 without the solar panels. Fig. 3 is a similar view but here the solar panels are arranged in their basic or initial position in which the container 10 can be transported or moved with the solar panels. Here the front solar panel SPF is hanging on a first series of hinges 14 fixed on the top T close or at the front edge 11 and covers the most part of the front face F of the container. The solar panel SPT lies on the top T of the container 10 and connected to the top T by a second series of hinges 15 positioned between the respective hinges of the first series of hinges 14. The back solar panel SPB is hanging on a third series of hinges 16 fixed to the top T close to the rear upper edge 13 and covers most part of the back B of the container. Just in front of the hinges 16 six further hinges 16a are arranged which serve as pivotal axes for the lower ends of the six top to container rods RTC. In this basic position the lower edges of the vertically hanging front and back solar panels SPF and SPB are connected to the lower part of the front and back face F and B of the container 10 by respective locks or hooks (not shown in the drawing). Before explaining the way how the solar panel array is moved out from this basic position the design of the holders HI to H18 of the respective solar modules will be explained.

Fig. 4 is a top view of the holders HI to H9 of the solar modules SMI to SM18 when all the solar panels are placed on the same plane. There are three different types of the holders, and each solar panel has three identical holders. Holders HI, H2 and H3 hold the six solar modules SMI to SM6 of the front solar panel SPF. One of these three holders HI to H3 is illustrated separately on the enlarged top view of Fig. 5. The holders H1-H3 are made as a metal frame around the respective solar modules which has three cross-bars and left and right longer side bars. The upper cross bars are provided with four spaced hinge parts 17a, b, c, d which are designed to fit to the first series of hinges 14 and in fitted position the associated holders HI -H3 are connected to the container 10 so that the holders together with the solar modules therein can be turned around the hinge 14 as an axis of rotation. The hinge part 17a is just beside the right bar of the holder HI and the spacing is chosen so that there is a space between the last hinge part and the left side of the holder. At both sides of the side bars of the frame respective support rods RSI are arranged and connected thereto with any known connection way like welding or bolts and nuts or rivets. The support rods RSI are fixed to the side of the associated holder so that their upper ends extend till the upper cross bar, and they extend over the central cross bar but do not reach the lower cross bar. It is convenient if the support rods RSI are tubes e.g. with quadratic or rectangular cross section.

The holders H4 to H6 belong to the top solar panel SPT and one of them is shown in detail in

Fig. 6. Here the lower cross bar is provided with hinge parts 18 a, b, c, d and they are designed as the hinge parts 17a..d but here the first hinge part 18a is close to the left side bar of the holder H4, and the last space is formed between the hinge part 18d and the right side bar. These hinge parts 18a to d are designed to fit in the second series of hinges 15, and by means of the hinged connection the top solar panels SPT can be turned around the same axis. The special spacing arrangement is required because when the top and front solar panels SPT and SPF are coupled to the upper front edge 11 of the container 10 by the hinges 14, 15 the respective hinge parts of a holder are taking the place of the spaces formed between the hinge parts of the other holder. On the top view of Fig. 4 one can observe the double density of the hinges in the central line between the two groups of holders. Respective support rods RS2 are fixed to the sides of the holders H4 to H6 which have preferably the same length and design as the support rods Rl of the holders HI to H3, however, in this case the support rods RS2 reach the lower cross bar of the holder H4..H6. In Fig. 4 it can be seen that the two types of support rods RSI and RS2 are separated only with a small distance defined by the size of the hinges, and they lie in the extension of each other.

From the upper cross bar of the holders H4 to H6 a pair of double projections 19, 20 are extending out at a small distance in longitudinal directions and the spacing between the projections 19, 20 is sufficient to receive and host any one of the rods RFB and RTC. Respective transversal holes are provided in the end regions of the projections 19, 20 in which a bolt functioning as a pivotal axis can be inserted and fixed. Each of the holders H4 to H6 has two pairs of projections 19, 20 as shown in Fig. 4.

The third version of the holders H7 to H9 is shown in Fig. 7 and they are associated with the solar modules SM 13 to SM 18 of the back solar panel SPB. The design of these holders H7 to H9 is similar to the design of the holders H7 to H9, however, the hinge parts 21 a, b, c, d cooperate with the hinges 16 close to the upper rear edge 13 of the container 10. A further difference lies in that on the upper cross bars a single projection 22 is sufficient instead of the double projections 19, 20 in the previous holder. The reason is that this projection is pivotally connected with the rear end of the rod RFB and does not have to hold a further rod. A last difference is that there is no need of the support rods because the holders H7 to H9 can be connected to each other in different way than by means of the support rods. In case of the two previous types of holders the support rods RSI, RS2 were required to keep the two solar panels SPF, SPT in the same plane. The presence of such rods is also possible if a more definite lateral connection has to be established between the holders H7 to H9.

Reference is made now to Fig 8 and the enlarged sectional detail of the two identical portions A shown in Fig. 8a, wherein the connection between the holder HI of the front solar panel SPF and the neighbouring holder H4 of the top solar panel SPT is shown. The figure shows only the adjacent halves of both holders HI and H4. As described earlier the support rod RSI is e.g. welded to the side of the associated holder HI and the support rod RS2 is welded to the side of the associated holder H4 so that they have only a narrow gap between the adjacent ends of these support rods RSI and RS2. It has been mentioned that these support rods RSI and RS2 are hollow tubes with preferably quadratic cross section. An outer size of e.g. 40 mm is preferred.

When during the installation of the solar system it is required that the front and top solar panels SPF and SPT lie in a common plane, i.e. they should be the continuation of each other, this position can be provided in the most convenient way if a connection rod RC is inserted in the hollow interior of the oppositely positioned support rods RSI and RS2. The connection rod RC should have a profile that loosely fits in the hollow interior. If the quadratic support rods RSI and RS2 have a wall thickness of 2 mm and their side length is 40 mm, then a solid quadratic rod with a side of 35 mm can be used, and this difference in size allows an easy insertion and removal. The length of the connection rod RC is slightly longer than the combined length of the support rods RSI and RS2, therefore the outwardly projecting ends can be secured against slipping out of the support rods. Although Fig. 8 shows only two connection rods RC if we consider the arrangement of Fig. 4 it is immediately obvious that altogether four pieces of the connection rods RC can connect and fix the top and front solar panels SPF and SPT to have a common plane.

Fig. 9 is the side view of the arrangement shown in perspective view in Fig. 1. The two solar panels SPF and SPT are connected with the respective connection rods RC which are covered as they are inside the support rods RSI and RS2. The hinges 14 and 15 follow each other in a comblike manner, wherein the hinge parts 17a, b, c, d of the holders HI to H3 engage the hinges 14, and the hinge parts 18a,b,c,d engage the intermediate hinges 15 and allow rotation of the united solar panel array around the common hinge axis. The rear ends of the six top to back rods RTB are connected to the respective projections 22 of the holders H7-H9 that hold the back solar panel SPB. The connection can be realized by a respective bolts inserted in bores made at the end regions of the projections 22 and of the rods RTB. These are pivotal connections i.e. allow rotation of the connected elements around the pivotal axis.

The frontal ends of the rods RTB are inserted in the space between the projection pairs 19, 20 on the holders H4-H6 for the top solar panel SPT. A bolt (not shown) can pivotally fix the position of the end of the rod RTB between the projection 19, 20. Prior to this connection the second type of rods RTC are connected by their lower ends to the hinges 16a on the top of the container 10 close to the rear edge. The connection allows turning the rod RTC around the axis of the hinge 16a. As shown in Fig. 1 there are six identical rod arrays behind each other of which Fig. 9 shows only as a single piece. After fixing the rod RTC in the hinge 16a, the upper part thereof should be inserted in the gap formed between the two projections 19, 20 of the associated one of the holders H4 to H6. Only after the insertion of the rod RTC in this gap will the end of the other rod RTB inserted above the rod RTC, and when the pivotal connection is made, the rod RTC will be encircled from all sides. Along the length of the rod RTC in a dense spacing respective bores are provided. The position shown in Fig. 9 can be secured if a bolt 23 (shown in distorted scale) is inserted in the bore of the rod RTC immediately under the position of the end of the rod RTB, i.e. the bolt 23 will prevent the projections 19, 20 and the holders H4 to H6 to slip down along the length of the rod RTC. In this way the position which is thought to provide the best energy-generating arrangement is fixed in the easiest way.

Fig. 10 shows an intermediate position of the solar panel systems during its installation from the initial position shown in Fig. 3. First the top solar panel SPT should be turned around the hinge axis and set to the vertical position. Then the connection rods RC should be inserted in the hollow interior of the support rods RSI and RS2 and its position should be fixed. The rods RTC are fixed in the hinges 16a, and their upper ends should be placed between the projections 19, 20 as explained earlier. Then the back solar panels should be erected with the previously connected ends of the rods RTB. The array gets completed when the frontal ends of the rods RTB are pivotally fixed in the bores of the spaced projections 19, 20 so that the other rod RTC will remain under the end of the rod RTB. The position can be fixed by inserting the bolt 23 in the appropriate bore of the rod RTC.

The horizontal arrangement is shown in Fig. 11. To arrive in this position from the previous one the forward end of the rod RTB should be released and the united solar panels SPT and SPF can now be turned to take the horizontal position. The rod RTC should be released from the hinges 16a and coupled to the hinges on the bottom part of the back B of the container 10 which was used previously to fix the lower edge of the solar panel SPB. The other upper end of the rod RTC should be connected to the projections 22 of the holders H7 to H9. It is preferred if the projections 19, 20 of the holders H4 to H6 are connected to the hinges 16a, as this fixes the horizontal position of the two united solar panels SPT and SPF. The rod RTC should be as long as required to hold the back solar panel SPB in the horizontal position shown in Fig. 11. This horizontal position is preferred for generating current in locations close to the equator where the sun shines almost from a vertical position.

Under most common places the angular position of the panels can be adjusted as schematically illustrated in Figs. 12 to 14. The highest angle is at the vertical arrangement shown in Fig. 12. The slightly inclined position shown in Fig. 12 can be adjusted from the vertical position shown in Fig 10 if the bolt 23 is removed from the bore of the rod RTC and the system is held by the service personnel who carry out the position adjustment. If now the plane of two solar panels SPT and SPF is inclined, the connection formed between the two projections 19, 20 and the forward end of rod RTB can slide in downward direction along the rod RTC encircled by them. If the position of Fig. 2 is reached, the bolt 23 is inserted in the closest bore on the rod RTC and the position gets fixed. The lower position shown in Fig. 13 can be reached if the bolt 23 is removed again, and the closed connection around the rod RTC slides in downward direction when all solar panels take a smaller angle of inclination. The position should be fixed by inserting the bolt 23 in the appropriate bore on the rod RTC. While here we have shown only one rod, in the reality there are six spaced rod assemblies and the described operations require six-time multiplication.

The almost horizontal position of Fig. 14 can be reached in a similar way, i.e. the positioning of the bolt 23 in the correct bore and the sliding of the rod RTB and the upper projections 19, 20 make such an adjustment easy.

Although the present invention has been described in connection with a preferred embodiment, it is clear that without departure from the essence of the inventive idea several changes and modifications can be mad, e.g. the number of support elements can be increased, their cross sectional profiles can be different, or instead of the rod RC a tube can be used.

The electrical connections of the solar panels have not been shown as their arrangement can take place in any conventional way, and the size of the wiring is negligibly small compared to the mechanical elements shown. For a man skilled in the art the design how the wiring should be made represents a simple task.

In any way it has been shown that the solar panels can be positioned in an almost ready-to- use state on the container 10, which allows easy transportation and relocation of the containers. The installation can be made in an easy way with a minimum number of simple elements and steps within a short period of time.

Claims

Claims:

1. A container based solar cell system comprising a container (10) of substantially oblong design having a long front side (F), a top (T) and a back (B) opposite to the front side (F), and the front side (F) and the top (T) meet along a front edge (11) and the back (B) and the top (T) meet along a rear edge (13), and an array of a plurality of juxtaposed framed solar modules of solar cells is coupled to one of the long edges (11, 13) with a hinged connection, and also comprising a plurality of rods fixed by one of their ends close to the other top edge (13 or 11) of the container (10) and the other ends of the rods are coupled to an upper portion of the solar cell array to fix the position thereof, characterized in that the solar array comprises two independent solar panels (SPF, SPT) of rectangular shape, the solar modules (SMI to SM 12) constituting the solar panels having frames around them and being held by rectangular holders (HI to H6) including the frames, wherein the front solar panel (SPF) is connected to a plurality of spaced first hinges (14) fixed to the top (T) of the container (10) close to the front edge (11), said connection is provided by means of hinge parts (17a...17d) formed close to the upper edges of the holders (H1..H3) associated with the front solar panel (SPF), wherein the hinges (14) define an axis around which the upper edge of the front solar panel (SPF) can be turned within a predetermined first angular range, and the top solar panel (SPT) is connected to a plurality of second spaced hinges (15) positioned in the spaces defined between the first hinges (14) and having an axis aligned with the axis of the first hinges (14), and said connection to the second hinges (15) is provided by means of hinge parts (18a...18d) formed close to the lower edges of the holders (H4..H6) associated with the top solar panel (SPT), wherein the top solar panel (SPT) can be turned by its lower edge around the hinge axis within a predetermined second angular range, and said system comprises releasable connection rods ( C) whereby said holders (H1..H3) of the front solar panel (SPF) and the holders (H4..H6) of the top solar panel (SPT) can be rigidly interconnected to defined a common plane for the front and top solar panels (SPF, SPT); and said rods (RTC) are coupled to the upper ends of the holders (H4...H6) of the top solar panel (SPT), wherein the size of the front and top solar panels (SPF, SPT) is slightly shorter than the associated front (F) or top (T) of the container (10), and in the removed position of the connection rods (RC) said font and top panels (SPF, SPT) can be turned and connected temporarily to the associated front (F) and top (T) sides of the container (10).

2. The container based solar cell system as claimed in claim 1, characterized by comprising a back solar panel (SPB) designed similar to said front and top solar panels (SPF, SPT) provided with respective holders (H7...H9) that have lower cross bars provided with hinge parts (21a...21d) and close to the top rear edge (13) of the container (10) a third series of spaced hinges (16) are provided and fixed to the container (10) that define a hinge axis parallel to the edge (13), around which the back solar panel (SPB) can be turned within a third predetermined angular range, and the hinges (16a) for the lower ends of the rods (RTC) are arranged closely in front of said hinges (16) of the back solar panel (SPB), and from the top of the holders (H7...H9) respective projections (21) extend out in opposite position where the rods (RTC) are coupled to the top of the holders (H4...H7) of the top solar panel (SPT), and further connection rods (RTB) are pivotally connected by one of their ends to the projections (21) on the top of the holders (H7...H9) of the back solar panels (SPB) and the other ends of these connection rods (RTB) are pivotally connected to the connection between the rods (RTC) and the holders (H4...H7) of the top solar panel (SPT), whereby in connected state and when the front and top solar panels (SPF, SPT) are united, the angular position of all of the solar panels (SPF, SPT, SPB) an be adjusted.

3. The container based solar cell system as claimed in claim 2, characterized in that the back solar panel (SPB) has about the same size as the front solar panel (SPF), and in released state of the connection rods (RTB) it can be folded back to cover the back (B) of the container (10) and be temporarily connected thereto.

4. The container based solar cell system as claimed in claims 2 or 3, characterized in that the triple connection between the top of the holders (H4..H6) of the top solar panel (SPT) and the front end of the connection rods (RTB) and the upper part of the rod (RTC) is provided by such a way that at the connection site respective pairs of spaced projections (19, 20) extend out from the upper ends of the holders (H4..H6), wherein the spacing allows the rod (RTC) to be inserted between the projections (19, 20), and the end portions of the projections (9, 20) above the inserted rod (RTC) are pivotally connected to the front ends of the connection rods (RTB) providing thereby a closed nest for the rod (RTC), furthermore a dense series of bores are provided along the length of the rod (RTC) and respective bolt (23) can be inserted in the bore closest under the triple connection, that fixes the array of the rods (RTC, RTB) and all solar panels in any given position.

5. The container based solar cell system as claimed in any of claims 2 to 4, characterized in that each holder (H1...H9) holds a respective pair of solar modules (SM) positioned vertically above each other, and respective support rods (RSI, RS2) are connected to the sides of the holders (H1..H6) of the front and top solar panels (SPF, SPT), and the support rods (RSI, RS2) have one of their ends close to the hinge axis and their length is shorter than the side length of the associated holder.

6. The container based solar cell system as claimed in claim 5, characterized in that the support rods (RSI, RS2) are tubes and the connection rods (RC) have an outer profile fitting in the hollow interior of the support rods (RSI, RS2) and have lengths at least as high as the united length of the support rods (SI, RS2), and the connection between the front and top solar panels (SPF, SPT) is provided by the insertion of the connection rods (RC) in the hollow interior of the support rods (RSI, RS2).

7. The container based solar cell system as claimed in any of claims 2 to 6, characterized in that the connection rods (RTC) of the top solar panel (SPT) and the container top (T) can be released from their original positions and attached to hinges arranged at the lower part of the back (B) of the container (10) and these connection rods (RTC) can be pivotally attached to the top of the holders (H7...H9) of the back solar panel (SPB), and have length in which in this connected position the back solar panel (SPB) takes a horizontal plane.

8. The container based solar cell system as claimed in any of claims 2 to 7, characterized in that each of the solar panels comprise respective six solar modules arranged in two rows and three columns, and each holder holds two solar modules in a column.

9. The container based solar cell system as claimed in claim 8, characterized in that the holders (H1...H9) comprise respective symmetrically spaced connection points for the rods (RTC and RTB) and six spaced assemblies of the rods (RTC and RTB) are included in total.