JP3093695U - Differential voltage driven solar tracking solar power generator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a solar power generation device that does not require a power supply for driving and control other than a solar cell, and that converts solar energy per unit light receiving area in solar radiation time to electric power as much as possible. SOLUTION: A panel on which a pair of right and left solar cell modules separated by a light shielding plate is mounted to support a rotation axis in a north-south direction so as to face the sun, and the left and right solar cell power generation difference voltage is applied to the rotation axis. An operating drive mechanism is coupled to track the sun so that the left and right outputs of the solar cells are balanced, and the left and right solar cells constantly receive the sunlight to receive high efficiency power generation.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  This invention is a solar cell with a sun tracking device that always directs the sunlight receiving surface toward the sun. Regarding a power generator.

[0002]

[Prior art]

  Conventional sun combined with a power generator using solar cells or solar cells The idea of a tracking device is to get energy from an internal or external power source And a computer that moves according to the change in direction of the sun by a computer or a clockwork Many follow, and many follow by a constant speed electric mechanism. If you look at the bulletin "Japanese Patent Laid-Open No. 6-45631" uses the power generated by a solar cell as a power source for a tracking drive device. It is a self-supporting type, but the solar irradiation to the solar cell is hidden by the shielding plate and no electricity is generated. It is a method of tracking as a power generation device that should supply power to the outside. The rate is low. Also, after sunset, the entire solar cell remains west, It cannot start automatically against the rising sun. "JP-A-8-5366" is the same Also, it is a self-supporting type that uses the power generated by the solar cell as a control drive power source and works as an optical sensor. Since the surface solar cell is equipped for control drive separately from the power generation cell, Can be reset automatically in the morning, but requires two types of solar cells, optical sensor And a control unit for the drive unit are required, and two drive motors are required. High cost compared to electricity. In the summer, the altitude of the south and middle altitudes reaches 78 degrees near Tokyo. It is difficult to follow the movement of the sun with a horizontal main motor and an angle-of-attack adjusting motor. . "JP-A-8-115609" similarly uses the output of the solar cell as a power source, It has an automatic reset function for starting the next morning, but a large number of divided solar The structure is complicated because it is necessary to attach the cells to both the front and back sides of the light receiving plate and control them at the same time. Therefore, the equipment is excessively heavy compared to the generated power output and the power generation efficiency is low. Well It is difficult to keep track of the sun by rotating the gantry on a horizontal surface without adapting to changes in the altitude of the sun. There is goodness. "Japanese Patent Laid-Open No. 2000-150934" receives the irradiation heat of the sun for tracking drive. It is a machine-controlled, machine-driven type that does not require a power source that uses the expansion and contraction of a shape memory alloy. Unable to compensate for temperature fluctuations due to seasonal, weather, and temperature changes, or depending on the weather on the day Accurate operation as solar tracking and good power generation as it may react excessively at Can't expect efficiency. "Japanese Patent Application Laid-Open No. 2000-196126" describes almost all of the above It has the same configuration as "Flat 8-5366", and it uses a lot of computer control and 3 motors. It is a heavy equipment and requires an external power supply for control drive. Mountainous remote areas, remote islands, grasslands It is not suitable for use outdoors, in the wilderness, in the desert, or on the beach, or on the sea. Does not meet your needs. "Japanese Patent Laid-Open No. 2001-201187" discloses that the sun tracking method is It has the same configuration as this application, but without using a solar cell for solar energy absorption, Turbines and generators generate steam by the heat energy obtained by facing the sun. The difference is that it drives. Use of solar energy is efficient, but the Since the body becomes larger, it is not suitable for simple and portable use. Above In order to meet the needs, power supply independence by using solar energy is an essential condition, Many ideas and technologies correspond to this, but it is not used as a solar cell. Portability and portability are important because they are particularly expected in areas with no energy supply. Important, heavy equipment is not suitable. In terms of cost, the simple configuration of the entire device High-efficiency power generation is essential, but conventional technology that meets this demand is still emerging. Not in.

[0003]

[Problems to be solved by the device]

  In view of the above points, the present invention requires a built-in battery for control drive or an external power source. It is possible to provide a highly efficient solar tracking power generator that operates automatically from early morning aimed to. The problem with this device is that the entire surface of the solar cell that receives light is constantly exposed to the sun. , To maximize the energy absorption efficiency by facing each other, and to minimize the occupied area. To provide a low-cost solar power generation device with a simplified and simple tracking drive device. It

[0004]

[Means for Solving the Problems]

  In order to achieve the above object, the differential voltage drive type solar tracking solar power generator of the present invention is , So that two solar cells with the same specifications, that is, two solar cell modules, face the sun In addition, it is arranged in parallel on the left and right sides of the mounting panel, and the axis of rotation is set so as to track the sun directly. A drive motor that supports and rotates in both forward and reverse directions is connected. As the drive power source for the drive motor The difference voltage generated when the outputs of the left and right solar cell modules are out of balance. To use. For the voltage difference, install a partition light shield vertically in the middle of the left and right modules, and If not, it occurs due to shade in one of the modules.

[0005]

[Work]

  Use the generated voltage difference between the left and right cell modules as the power source for the drive unit that tracks the sun. It A partition shading plate is installed vertically between the two solar cells on the left and right, When the sun deviates from the front facing position, the light receiving areas of the left and right solar cells will be balanced due to the shading plate. The output voltage of the left and right cells is lost. Guide this difference voltage to the tracking drive motor, The panel with cell modules is tracked and rotated until the balance is restored. Due to the voltage difference The direction of rotation is two directions, normal and reverse, depending on the current direction of the differential voltage, and the generated voltage of the left and right cells is The wires are connected so that they go in the direction of equilibrium, that is, the panels follow the sun. ing. This allows the left and right solar cells to face the sun almost all the time. -Efficiently outputs the power generated by the large cell. A panel facing west at sunset It is necessary to return to the east for early morning start, but this requires a tracking drive on the back side of the panel. Attach the third solar cell with a small capacity necessary to reverse the dynamic motor, It is led to the tracking drive motor, and the original position is generated by the generated power received on the back side (back side) in the early morning. Return to the storage. From the above, it is possible to face the sun in azimuth, but the The altitude of the sun, that is, the south and middle altitudes, is 32 degrees in the winter solstice and the summer solstice near Tokyo. Changes to 78 degrees. 55 degrees in the middle equinox and autumn equinox When the angle of attack is fixed, the incident angle of sunlight on the solar cell is 2 in the winter and summer solstices. It becomes 3 degrees, and the received light energy drops to 92%. To correct this, the sun south The north and south of the module-mounted panel can be manually or automatically about once a month according to the middle altitude. Adjust the tilt angle within the range of 55 degrees ± 23 degrees to maximize the absorption of sunlight.

[0006]

[Embodiment of device]

  1 is a perspective view of a power generation module panel of FIG. 1 and FIG. The side view of the body and the circuit diagram of FIG. 3 will be described. Multiple solar cells arranged in series A pair of module 1 and module 2 are the main components of solar power generation, and are assembled in panel 3. It is embedded and connected as shown in FIG. The panel 3 has a bearing on the upper end of the rotating shaft 4. 5, the lower end of the rotary shaft is connected to the drive mechanism 6, and the drive mechanism drives Rotate about ± 75 degrees in two opposite directions. The drive mechanism 6 is a small high speed motor and a reduction gear. It is composed of. On the back of the panel is a small-capacity solar power source for the eastward return The cell module 7 is assembled. The panel 3 has the lower end assembled with the drive mechanism 6. It is engaged with the pedestal 9 by the hinge 8 attached, and the upper end of the pedestal 9 is supported by the column 10 that holds the bearing 5. It is engaged. The column 10 has a lower end which is pin-engaged with the hinge portion 11 of the frame 9. It is pin-engaged with one end of the bar 12. The other end of the lever 12 is a temperature sensitive telescopic rod 1 3 is pin-engaged with the tip of the rod 3, and the other end of the rod 13 is anchored to the mount 9 by a hinge 14. Has been The panel 3 is assembled with a pair of cell modules 1 and 2 However, the partition light-shielding plate 15 is installed vertically in the central part, A mirror that reflects light efficiently to increase the sensitivity of the solar cell to sunlight. The surface is finished with a material such as. The module panel 3 is tilted with respect to the mount 9. It is installed obliquely, and the central value is 55 degrees ± 23 degrees due to the operation of the telescopic rod 13. The tilt angle is changed. For this device to work properly, place it on a horizontal surface, The pivot axis of the panel must be exactly aligned with the north-south direction of the plane containing the earth axis. Electric The wiring of the air circuit is as shown in Fig. 3, and the output of modules 1 and 2 connected in series. Is led to the terminal 16, but both poles of the drive motor that rotates in the forward and reverse directions depending on the current direction. One is the midpoint of the module connection and the other is the ballast resistors R1 and R2. It is connected to the midpoint of the path divided by the iodines D1 and D2. R1 and The resistance value of R2 and the characteristics of D1 and D2 are equal. The sun moved to the west For this reason, the shade of the shading plate is on the module 2 (northern hemisphere) side on the east side facing the sun. If the generated voltage becomes low, a differential voltage will be generated and the module 2 side will The drive motor receives a current from the high-voltage module 1 side so that It rotates and stops when the voltage is balanced. When the module 1 side is shaded The reverse operation is performed. Due to the sunset, the panel 3 stopped facing west As the sun rises, the sun shines on the rear module 7 facing east, The drive motor is driven by the panel 3 by the voltage difference generated between the module 1 and the module 7 Reverse to the east. As described above, the extremely simple configuration enables fine tracking and effective It is possible to perform full-scale power generation with good efficiency. The tracking operation and power generation balance described above are small The experiment was confirmed by the prototype.

[0007]   The tracking drive mechanism of the second embodiment has the same structure as that of the first embodiment, but the solar cell module The arrangement of the tools differs as shown in FIG. 4, and the tracking drive circuit and the power generation output circuit are shown in FIG. It is separated as follows. Solar cell modules 1a and 2a for tracking drive are It is placed on the left and right sides of the partition light-shielding plate to enhance the sensitivity. Solar for power generation output -The cell modules 1A and 1B are arranged on the left and right outside, and Stable output can be achieved regardless of whether it is activated or not.

[0008]

[Effect of device]

  The power of the drive mechanism that makes the solar cell track the sun is all output from the solar cell. Since it is partially covered, there is no need for external power supply, and remote islands or remote areas It can generate electricity without problems in remote areas and at sea, and supply electricity to the outside. Tracking drive Is intermittently performed only when the differential voltage exceeds a certain level, and the required power is also small. There are few. An optical sensor or computer for detecting the direction of the sun and controlling the drive unit. There is no need for a power supply All without having to rent other energy as above Almost all surface of the solar cell is not used for self-power generation It is possible to face each other and use almost all of the generated power. Therefore, power generation The required area per force is minimal, and the purpose is achieved with a low-cost, compact structure. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of a power generation module panel.

FIG. 2 is an overall side view.

FIG. 3 is an electric circuit diagram of the first embodiment.

FIG. 4 is a layout view of a power generation module panel according to a second embodiment.

FIG. 5 is an electric circuit diagram of a second embodiment.

[Explanation of symbols]

1. Power generation module 1A. Example 2 power generation output module 1a. Tracking drive power generation module of Example 2 2. Power generation module 2A. Example 2 power generation output module 2a. Tracking drive power generation module of Example 2 3. Module panel 4. Rotation axis of module panel 5. bearing 6. Drive mechanism 7. Power generation module on the back of the panel 8. Frame-side hinge that engages the drive mechanism 9. Stand 10. Prop 11. Frame-side hinge that engages the lever 12. lever 13. Temperature-sensitive telescopic rod 14. Telescopic rod frame hinge 15. Partition shading plate 16. Output terminal R1. Ballast resistance R2. Ballast resistance D1. Backflow prevention diode D2. Backflow prevention diode D3. Backflow prevention diode

Claims (2)

[Scope of utility model registration request] 1. A solar panel having a pair of left and right solar cell modules, which are partitioned by a partition light-shielding plate at the center, is pivotally supported on a pedestal so that the panel can be tracked so as to face the sun direction. A differential voltage drive solar tracking solar that connects the drive mechanism that operates by the differential voltage of the cell module generation, tracks the sun so that the left and right generated voltages are balanced, and outputs the total power generated by the left and right solar cell modules. Power generator. 2. The third solar cell module according to claim 1, wherein the panel-mounted panel facing west by sunset is returned to east for early morning start, in which the tracking drive motor having the panel stopped west is reversed. This is a solar power generator for solar tracking with differential voltage drive, which is attached to the back of the module-mounted panel and led to a tracking drive motor.