WO2009059638A1

WO2009059638A1 - Mobile solar box

Info

Publication number: WO2009059638A1
Application number: PCT/EP2007/062072
Authority: WO
Inventors: Harald Dellian
Original assignee: Osram Gesellschaft mit beschränkter Haftung
Priority date: 2007-11-08
Filing date: 2007-11-08
Publication date: 2009-05-14

Abstract

The invention relates to a mobile solar box (1), comprising an integrated energy accumulator (45), a charging circuit (630), and integrated solar panels (31, 33, 35), which can be aligned in a planar fashion over a mechanism, wherein the solar box comprises at least one charging compartment (41, 42) for external rechargeable batteries, and the solar panels are disposed such that the integrated energy accumulator (45) and/or the external rechargeable batteries can be charged even if the solar cells are not aligned in a planar fashion.

Description

description

[1] Mobile solar box.

Technical area

The invention relates to a mobile solar box with an integrated energy storage, a charging circuit, and integrated solar panels, which are aligned over a plane surface. It should ensure the power supply for various devices wherever there is no power grid. This is called the so-called 'off grid' power supply. The term "accumulator" used below refers to a secondary cell, ie a rechargeable battery. The term 'mobile solar box' refers to a small, handy, mobile device by means of which solar cell batteries can be charged into the solar box and other devices can be supplied with power.

State of the art

From WO2005 / 108877 A2 a portable system for solar power generation is known, which is designed in terms of dimensions, to supply several households in a island operation with electricity.

From FR 2 691 290 A1 a portable solar case is known, which is hinged and an integrated accumulator can be loaded by means of the aligned in the unfolded state solar panels.

From DE 88 11 389 Ul a portable solar generator in a suitcase-like housing is known, which can also be opened, so that two solar panels are aligned to the sun. The solar generator holds an accumulator that can be charged by means of the solar panels, and an integrated inverter that draws its energy from the accumulator and provides a 220V AC voltage.

task

It is an object of the invention to provide a mobile solar box with an integrated energy storage, a charging circuit, and integrated solar panels, which is small and portable by hand and recharges itself via solar cells integrated into the memory.

[7] This object is achieved by a solar box with the features of claim 1.

[8] Advantageous developments of the invention are specified in the dependent claims.

Presentation of the invention

[9] The mobile solar box is a small, handy and lightweight solar energy storage. It is intended to meet the needs of modern people in terms of light and electrical energy where there is no power grid.

The mobile solar box has a substantially cube-shaped shape and is made of a lightweight, impact-resistant plastic, which makes it lightweight and durable. It has a closable lid in which the solar cells are integrated. The solar box can be aligned via two integrated adjustable feet manually or electrically, and / or via the hinge between the lid and box body in an axis to the sun. The lid includes three panels with solar cells, one at a time can be controlled. One of the panels is placed on the top of the lid to load even when the solar box is closed and 'tidy' panels are closed. Of course, the loading happens with less power. This is for mountain climbers an advantage, for example, because the outside of the backpack moored solar can already generate electricity during the climb. The other panels can be aligned over a folding and / or drawer mechanism surface. In this case, surface orientation means that all panels essentially lie in one plane, so that they do not shadow each other and can be aligned together towards the sun. The solar box itself has at least one motor-extendable foot over which the solar box can be tilted in at least one axis. The drive of the extendable foot is connected to a controller which sets the best angle of incidence via the measured power of the solar cells. This provides a simple and robust device to maximize charging performance. But it is also a manually extendable and lockable foot conceivable. If the differences in performance between the panels due to partial shading are greater than a set threshold, an audible signaling device is activated to alert the user and prompt him to reorient the box.

The lid has a tab which cooperates with a lock in the solar box, so that the lid is lockable. The solar box has in the region of the lid on one or more groove-shaped recesses, the have an undercut, so that an introduced into this recess object with a matching in the undercut thickening after closing the lid can not be removed. This can be advantageously used as an anti-theft device if the object is, for example, a wire rope with a corresponding thickening that can be wound around a solid object such as a railing or a tree. Once the lid is closed, the solar box can not be removed.

The solar box has several mounting straps, by means of which it can be attached for transport or on the ground. Thereby, in a practical way it is e.g. mountaineering while climbing the backpack so that you can generate and store energy during this time. The solar box also has a storage compartment for adapters and other small parts. The housing is splash-proof, so that the solar box can be carried without protective cover even in adverse weather conditions. The housing is thermally insulating to provide the accumulators and the internal electronics as uniform temperature conditions.

[13] If the lid is opened, two charging slots are accessible, in which all common accumulators can be charged via adapters. Two additional empty slots are used to hold already charged batteries or empty batteries that are still to be charged. The charging slots have a priority circuit, by means of which the batteries can be preferably loaded in a charging slot. For this purpose, a switch is provided on the outside, with which the preferred charging slot is selected. Al Ternatively, permanent priority switching of a subject is also conceivable. On the outside, a cable compartment with a cable and a suitable plug is provided, which can be connected to a vehicle electrical system. The cable can be conveniently used and stowed away by means of an automatic retractor integrated into the solar box. By closing the cable compartment, the plug is firmly locked. Another cable compartment is provided for a 12V output, which can be used to supply external devices with power. Also this cable compartment has the above-mentioned automatic retractor, to stow the cable safely and comfortably in the solar box. Furthermore, the solar box has a USB port to load external devices via USB.

[14] So that the solar box in the off-grid area can also be used as a luminaire, two white luminous LEDs are mounted on the upper edge of each outer side. So that the light-emitting diodes can not be switched on accidentally during the day, the ambient brightness is measured via a light sensor or the solar panel located on the cover and the light-emitting diodes are released only under a certain brightness value. This lamp can also be used as a flashing beacon to alert you to emergency situations. Preferably, the internationally valid Morse code for SOS can be sent as a light sequence.

Short description of the drawing (s)

[15] The invention will be explained in more detail below with reference to exemplary embodiments. Show it: [16] Fig. 1 A perspective front view of the open solar box with retracted solar panels.

[17] Fig. 2 A perspective front view of the closed solar box with extended solar panels.

[18] Fig. 3 A perspective rear view of the open solar box with retracted solar panels.

[19] Fig. 4 A perspective left side view of the open solar box with retracted solar panels.

[20] Fig. 5 A perspective right side view of the open solar box with retracted solar panels.

[21] Fig. 6 A perspective view of the solar box with inner functional blocks shown.

[22] Fig. 7 A block diagram of the solar box electronics.

Preferred embodiment of the invention

Fig. 1 shows a preferred embodiment of the mobile solar box 1. The solar box has a substantially cubic shape with rounded edges. It is constructed from a cover 3 and a box body 5. The box body 5 has two motor-extendable feet 7, by means of which the solar box can be tilted automatically in 2 axes. If the cover 3 is unfolded, then two loading shafts 41 and 42 as well as two storage shafts 43 are provided. accessible. The lid is held by a magnet 53 in the closed position, and has a tab 34 which cooperates with a code lock 32 to close the solar box can.

In the box body 5 U-shaped grooves 55 are introduced between the charging slots, which form a cross whose intersection point 56 is located approximately in the middle of the upper surface of the box body 5. At the intersection creates an undercut, in which a correspondingly shaped end 361 of an anti-theft device 36 can be inserted so that withdrawal of the anti-theft device 36 is prevented by the undercut. If the lid is closed, the anti-theft device 36 is no longer removable. At the other end of the anti-theft device 36, which consists essentially of a steel cable here, a loop is provided so that the steel cable can be looped around a solid object such as a tree or a post, and then the lying in the solar box 1 coming end is pulled through the sling. This principle is well known in bicycle locks. Characterized in that the correspondingly shaped end is inserted into the groove 55 of the solar box 1, and the lid 3 of the solar box is closed and closed by means of the code lock 32, the solar box 1 is theft-proof attached to the object.

For the charging slots 41, 42 different adapters are provided, can be loaded on the various common accumulator types. The shaft is dimensioned so that eg all accumulator types can be charged between the sizes AAA (Micro) and D (Mono). The two storage shafts 43 serve as reserve shafts in which can be stored to be charged or already charged accumulator cells. The charging slots 41, 42 are divided into a first charging slot 41 and a second charging slot 42, and have a priority circuit in the form of a changeover switch 44. With this, the priority to be loaded slot can be selected. Each slot 41, 42 has as indicator a multi-color LED 441, 442, which indicates the current status of the shaft. If the light-emitting diode 441, 442 lights up red, there is no device to be charged or an error has occurred during charging. If it flashes green, the charge is active. If it lights green, the charge is finished and the batteries can be removed. The priority circuit divides the available charging power to 2/3 for the slot to be charged in advance and 1/3 for the other slot. When the priority charge is completed, priority is disabled and the batteries in the other slot are charged at full power. As soon as new batteries are inserted in the priority slot, priority switching is reactivated and 2/3 of the energy returns to the priority slot.

In the lid 3 two white LEDs 9 are embedded on three sides. Thus, the mobile solar box can be used at night as a floor lamp. In this case, the energy comes from the internal energy store 45 or, if present, from an accumulator in one of the charging shafts 41 or 42. The light-emitting diodes 9 are supplied via a voltage adjustment circuit 67 from the busbar 60 (both shown in FIG. 7).

[27] Fig. 2 shows a front perspective view of the closed solar box with extended solar panels 31, 33, 35. In addition to an outwardly directed main panel 31, a left side panel 35 and a right side panel 33 are shown. The panels are preferably pulled out or driven out of the cover in the manner of a drawer and locked in the closed state as well as in the open state. The hinge which connects the lid 3 to the box body 5 is self-locking so that the lid remains in any position. This allows the approximate angle of incidence to be adjusted and the panels to be aligned approximately with the sun. The panels in the extended state activate after some time (eg 20 s) the higher-level charging circuit 63 (shown in Fig. 7), which then controls the stepper motors 462, 463 so that the panels generate the greatest possible charging power. Once the three panels 31, 33 and 35 no longer ever produce about the same charging power, it can be assumed that one of the panels is shaded. If this case occurs for longer than a predetermined time (eg 10 s), an acoustic signal generator 640 (shown in FIG. 7) is activated, which should alert the owner to this situation. Optionally, a display device 637 (shown in FIG. 7) may be provided, which provides a rough classification of the available charging power. This can be, for example, a three-color LED (red: low light and charging power, yellow: sufficient charging power, green: plenty of light and good charging power).

[28] FIG. 3 shows a perspective rear view of the open solar box 1 with retracted solar panels. The solar box has on its back four tabs 51, by means of which they in various ways can be attached. If, for example, an accumulator is to be charged during a migration, the solar box can be fastened to a backpack by means of the tabs 51, and the accumulator to be charged can then be charged by means of the main panel 31. If the solar box 1 on the ground, so it can be fixed by means of commercially available tent pegs' and the lower flaps 51 on the ground. Thus, it is protected from falling over in windy weather and the extendable feet 7 can still set the optimal angle of incidence for the panels. The solar box 1 has only one rear foot 8, so that the lateral inclination of the two front extendable feet 7 is adjustable within limits. About the shutter 451 of the internal energy storage is accessible.

[29] Fig. 4 shows a perspective left side view of the open solar box 1 with retracted solar panels. On the left side of the cable compartment for the vehicle electrical system connection 46 is housed. The vehicle electrical system connection 46 can be plugged, for example, into the cigarette lighter socket of an automobile. Thus, this external power supply can be used for all functions of the solar box, if, for example, the solar panels can not work due to the ambient brightness. The cable compartment includes a cable retractor 461 (shown in Figure 6) similar to a vacuum cleaner. This allows a convenient use of the cable, which can be easily rolled up by spring force when not in use. In addition, a USB output 48 is attached to the left side of the solar box, by means of which USB devices such as MP3 players, mobile phones or PDAs can be loaded. [30] FIG. 5 shows a perspective right side view of the open solar box 1 with retracted solar panels. On the right side, the cable compartment is attached to a 12V output 47. This output is used to supply external devices or charging circuits. The cable as well as the vehicle electrical system connection with a cable retractor 471 (shown in Fig. 6) equipped. On the cable of the 12V output 47 different adapter plugs can be attached, by means of which various devices such as radios, mobile phones or electrical children's toys can be supplied with power.

[31] In Fig. 6 is a perspective view of the solar box 1 is shown with internal function blocks shown. Here you can see the internal roll-up automatics 461 for the vehicle electrical system connection and 471 for the 12V output. The two stepper motors 462 and 463 for the extendable feet 7 are also shown schematically here. Also to be seen is located in the middle between the wells 41-43 internal energy storage 45 of this example consists of two cells. These may be commercial accumulators, e.g. from the group of NiCd, NiMh or Lilon accumulators. However, instead of the two cells, a suitable double-layer capacitor can also be used.

FIG. 7 shows the block diagram of the internal electronics of the mobile solar box 1. The three solar modules 31, 33, 35 are connected to an internal busbar 60 via diodes. At this busbar and the vehicle electrical system connection 46 is connected. About this busbar 60, the internal charge controller 65 for the internal energy storage 45 and the two charge controller 61 and 62 for the charging slots 41 and 42 are energized. The current voltage of the bus bar 60 is measured via a peak value rectifier 631 and compared by the higher-level electronics 63 with the stored value of a peak value rectifier memory 632. Due to this comparison, the motor control 633 is driven for the two stepper motors 462 and 463 of the extendable feet. During the control, a method known in the prior art is used, so that the height of the voltage and thus the angle of incidence correlating therewith can be optimized within a short time. The extendable feet 7 are connected via a bar with a switch 635, so that it can be detected whether the mobile solar box 1 is standing on its feet or not. The switch 633 of the stepper motors 462 and 463 is activated or deactivated via the switch so that they are only active when the solar box is standing on its feet. If the solar box is removed, the feet 7 are retracted and the control 633 is then deactivated.

A charging circuit 630 monitors the charging slots 41 and 42 and controls the charge controllers 61 and 62, respectively. The charging circuitry is connected to the priority switch 44 and controls the display diodes 441 and 442. Through internal encoding of the charging adapters, the charging circuitry 630 can control the type of charge Recognize accumulator. The charging circuit 630 is designed to handle all common types of rechargeable batteries such as e.g. Lead acid batteries, NiCd, NiMH, Lilon or LiPos to load.

[34] The 12 V output socket is connected to the 12 V output via a voltage adjustment circuit 67. is the vehicle electrical system connection 46 is connected to an external 12V power supply, this is looped through to the 12V output 47 in order to relieve the voltage adjustment circuit 67 and to be able to provide greater power at the 12V output 47.

Reference sign list

1 solar box

3 cover 5 box body

7 Extendable foot

8 Fixed foot

9 illumination LEDs

31 First solar panel 33 Second solar panel

35 Third solar panel

32 Code lock 34 Cover flap

36 Anti-theft device 41 First charging slot

42 Second charging slot

43 storage shafts

44 Charge priority switch 441 Charge priority indicator 442 Charge priority indicator

45 Internal energy storage

451 lock for internal energy storage

46 vehicle electrical system connection

461 Automatic retractor for vehicle power supply 462 stepper motor

463 stepper motor

47 12V output

471 Automatic retractor for 12V output

48 USB output 51 mounting tabs

53 magnetic lock

55 grooves

56 Cross point of the slots 60 Busbar 61 Charge controller for the first charging slot

62 charge controller for second charging slot

63 higher-level electronics

630 charging circuit

631 Peak rectifier 632 Peak rectifier memory

635 stand switch

637 display

640 Acoustic signal transmitter

65 Charge controller for internal energy storage 67 Voltage adjustment circuit

Claims

claims

1. Mobile solar box (1) with an integrated energy store (45), a charging circuit (630), and at least one integrated solar panel (31, 33, 35), which is alignable flat over a mechanism, characterized in that the solar box (1 ) at least one

Loading compartment (41, 42) for external batteries, and the at least one solar panel (31, 33, 35) is arranged so that the integrated energy storage

(45) and / or the external accumulators are rechargeable even when non-planar solar panel (31, 33, 35).

2. Mobile solar box according to claim 1, characterized in that a plurality of solar panels (31, 33, 35) are provided and the solar panels (31, 33, 35) individually and / or in groups can be controlled.

3. Mobile solar box according to claim 1 or 2, characterized in that the solar box has at least one housing cover (3), the housing cover (3) at least one solar panel (31, 33, 35) includes and at least one solar panel at least partially unfolded and / or retractable.

4. Mobile solar box according to claim 3, characterized in that the at least one solar panel (31, 33, 35) together with the cover (3) is tiltable about an axis.

5. Mobile solar box according to one of the preceding claims, characterized in that the solar box at least one motor extendable foot (7) for inclination the solar box which cooperates with a controller (63, 633) such that the maximum charging power for the at least one solar panel (31, 33, 35) can be reached.

6. Mobile solar box according to one of claims 1-4, characterized in that the solar box has at least one manually extendable and lockable foot.

7. Mobile solar box according to one of the preceding claims, characterized in that the solar box (1) has at least one optical and / or acoustic signaling device (640), the partial shading of the solar cells (31, 33, 35) activated at partial o is.

8. Mobile solar box according to one of the preceding claims, characterized in that the solar box has at least two charging compartments (41, 42), and the charging circuit (630) includes a priority circuit which preferably loads a charging compartment (41).

9. Mobile solar box according to one of the preceding claims, characterized in that the charging circuit

(630) via an input (46) with a vehicle electrical system is connectable and the internal energy storage (45) and / or the accumulators are charged with the voltage of the electrical system.

10. Mobile solar box according to claim 9, characterized in that the input (46) for connecting to a motor vehicle electrical system at least one cable and at least one Device for automatically rolling up the cable comprises.

11. Mobile solar box according to one of the preceding claims, characterized in that the solar box has at least one output (47) for the power supply of external devices.

12. Mobile solar box according to one of the preceding claims, characterized in that the solar box has at least one USB port (48) for charging external devices.

13. Mobile solar box according to claim 11 or 12, characterized in that the output for powering external devices and / or the USB port comprises at least one cable and at least one device for automatic unwinding of the cable.

14. Mobile solar box according to one of the preceding claims, characterized in that at least one outer side of the housing (5) and / or the lid (3), in particular at the upper edge, at least one white light emitting diode (9) is mounted.

15. Mobile solar box according to claim 14, characterized in that the solar box has at least one light sensor, as well as a device which allows in cooperation with the light sensor below a predetermined ambient brightness, the commissioning of the white light emitting diodes (9).

16. Mobile solar box according to claim 15, characterized in that the at least one solar panel is designed as a light sensor.

17. Mobile solar box according to any one of claims 14-16, character- ized in that the solar box (1) as well

Flash and / or signal light is used.

18. Mobile solar box according to claim 17, characterized in that by means of the solar box (1) as a light sequence, the internationally valid Morse code for SOS can be emitted.

19. Mobile solar box according to one of the preceding claims, characterized in that the housing (5) of the solar box is made of a lightweight and impact-resistant plastic, the housing (5) executed splash-proof and thermally insulating.

20. Mobile solar box according to one of the preceding claims, characterized in that the housing (5) has at least one storage compartment for adapters and other small parts.

21. Mobile solar box according to one of the preceding claims, characterized in that the lid (3) can be locked by suitable means.

22. Mobile solar box according to claim 21, characterized in that the cover (3) has a tab (34) up, over which it is lockable with a lock (32).

23. Mobile solar box according to one of claims 21 or 22, characterized in that the housing (5) of the solar box has a recess (55) with an undercut, which is designed so that an introduced into the recess object with the lid closed (3) is not removable.

24. Mobile solar box according to claim 23, characterized in that in the recess (55) insertable object is an anti-theft device (36) which is attachable to a solid object.