CN203324820U - Double-shaft tracking photovoltaic generating device - Google Patents

Abstract

The utility model discloses a dual-axis tracking photovoltaic power generation device, which comprises a solar battery module, a battery module installation frame, a front pillar and a rear pillar, the battery module installation frame is supported on the front pillar and the rear pillar, and the front pillar The number is one, and the front pillar is connected to the battery assembly installation frame through a spherical hinge. The front pillar is a rod structure with a fixed length; Connected to the battery assembly installation frame, the lower ends of the two rear pillars are respectively supported on the base through spherical hinges, and the two rear pillars are rod-type structures whose length can be adjusted. The dual-axis tracking photovoltaic power generation device of the utility model not only has higher power generation efficiency than the fixed installation photovoltaic power generation device, but also has a simpler structure and lower cost than the photovoltaic power generation device with the sun tracking automatic control system. Low, but also has a high reliability.

Description

Two-axis tracking photovoltaic power generation device

technical field

The utility model relates to a photovoltaic power generation device, in particular to a photovoltaic power generation device with a tracking function.

Background technique

Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. The key element of this technology is the solar cell. A certain number of solar cells are connected and packaged to form a solar cell module, and then combined with a power controller and other components to form a photovoltaic power generation device.

In order to obtain the maximum power output of the photovoltaic power generation device, it is necessary to combine the geography, climate and solar resource conditions of the construction site, and install the solar cell modules in a certain orientation to ensure that the solar cells can obtain the most sunlight resources. Theoretically speaking, if the solar cell can always face the sun, its power generation efficiency will reach the best state.

The solar cell module is installed on the support of the photovoltaic power generation device, so the required installation orientation of the solar cell is guaranteed by the support of the photovoltaic power generation device. The bracket structure of most photovoltaic power generation devices is a fixed installation type, that is, after installing this type of bracket, the installation orientation of the photovoltaic cell module is determined, and it is also fixed during use. Of course, its The installation orientation is calculated and determined according to the latitude and longitude of the place where the photovoltaic power generation device is installed, which can ensure that the photovoltaic power generation device has a relatively high efficiency. Such a bracket has a simple structure and is convenient for installation and maintenance, but obviously its power generation efficiency will not be very high.

In order to improve the power generation efficiency of photovoltaic power generation devices, people have developed photovoltaic power generation devices with automatic sun tracking control systems. There are generally two types of such sun tracking control systems. One is a dual-axis tracking system, which can not only track the sun The azimuth angle can also track the sun's altitude angle at the same time. In theory, it can completely track the sun's trajectory, so that the solar cell can always face the sun and achieve the best power generation effect; the other is a single-axis tracking system, which The azimuth angle of the sun can be tracked, or the altitude angle of the sun can be tracked, so that the solar cell can face the sun in a certain direction, thereby improving the power generation efficiency of the solar power generation device. This type of sun tracking automatic control system is generally driven by a servo motor through a mechanism such as a worm gear, so that the solar cell module and its installation frame rotate around the corresponding axis to realize the tracking function.

Using a photovoltaic power generation device with a sun tracking automatic control system improves the efficiency of solar cells, but the cost of the entire device has increased a lot, the initial investment is large, and the use and maintenance costs and workload have also increased accordingly. There is a further problem. Due to the need for tracking, the solar cell module needs to change its angular posture according to the position of the sun. The entire solar cell module and its mounting frame are in an active state, and there must be a certain gap between the moving parts and the fixed parts. , in this case, the structural rigidity of the whole device is poor, and the whole device can only maintain its position by the self-locking function of the worm gear; usually, photovoltaic power generation devices are always installed in sunny wilderness, such as barren mountains, Gobi, Beaches and tidal flats, where the normal wind force is very strong, often accompanied by sand and dust, under the action of strong wind, large-area solar cell modules will receive a large force, which has the disadvantage of poor structural rigidity. The photovoltaic power generation device of the sun tracking control system is damaged, and the transmission mechanism is also easily damaged under the action of sand and dust, resulting in the failure of the worm gear and other transmission devices to work normally, the self-locking performance is weakened, and the tracking adjustment function cannot be realized. Sometimes the orientation of the solar cell module will be biased to a certain limit position under the action of the wind, and it will be stuck in this position. Obviously, this position will not be an ideal working position for the solar cell. If such a situation occurs, instead It affects the power generation efficiency of the photovoltaic power generation device.

Utility model content

Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a dual-axis tracking photovoltaic power generation device, which not only has higher power generation efficiency than fixed-installation photovoltaic power generation devices, but also can Compared with the photovoltaic power generation device with a sun tracking automatic control system, it is simpler, lower in cost, and has higher reliability in use.

In order to solve the above technical problems, the dual-axis tracking photovoltaic power generation device of the present invention includes a solar cell assembly, a battery assembly installation frame, a front pillar and a rear pillar, and the solar cell assembly is fixedly connected to the battery assembly installation frame. The installation frame is supported on the front pillar and the rear pillar, the number of the front pillar is one, the front pillar is connected to the battery assembly installation frame through a spherical hinge, and the front pillar is a rod structure with a fixed length; The number of the rear pillars is two, and the upper ends of the two rear pillars are connected to the battery module installation frame through a spherical hinge, and the lower ends of the two rear pillars are respectively supported on the base through a spherical hinge, and the two rear pillars are adjustable. long rod structure.

In the above structure, since a single front pillar is used, and it is connected to the battery module installation frame through a spherical hinge, while providing load-bearing support for the solar battery module and the battery module installation frame, the spherical hinge acts as a fulcrum, and the battery The component installation frame can adjust the direction and position arbitrarily within a large range on the spherical hinge; at the same time, the front pillar is a rod structure with a fixed length, which can ensure its high structural rigidity.

And because the number of the rear pillars is two, they cooperate with the aforementioned single front pillars to form a three-legged structure, which provides a stable support structure for the solar battery module and the battery module installation frame; and the upper ends of the two rear pillars and the spherical The hinge is connected to the battery assembly installation frame, and the direction and position between the battery assembly installation frame and each rear column can be adjusted arbitrarily within a large range; similarly, the lower ends of the two rear columns are respectively supported on the base by spherical hinges, Then the direction position between the rear pillar and the base can also be adjusted arbitrarily within a relatively large range.

The above structure eliminates structural limitations for the two-way tracking of the photovoltaic power generation device, and the two rear pillars are rod-type structures with adjustable lengths, which provides the possibility of operation for the tracking adjustment of the photovoltaic power generation device.

When the two rear pillars are adjusted to the same length at the same time, the solar cell module and the battery module installation frame will rotate around the spherical hinge of the front pillar, that is, the pitch angle of the solar cell module and the battery module installation frame will be changed, so that the height of the sun can be tracked ; and when one of the two rear pillars adjusts the length independently, the solar cell module and the battery module installation frame will rotate around the center line of the spherical hinge of the front pillar and the spherical hinge of the other rear pillar; therefore, proper adjustment The length of the two rear pillars, on the one hand, can change the angle of the left and right directions when the pitch angle of the solar cell module and the solar cell module installation frame remains unchanged, that is, it can track the azimuth angle of the sun; on the other hand, it can change the solar cell The pitch angle of the solar cell module and the cell module installation frame also changes the azimuth angle of the solar cell module and the cell module installation frame, that is, not only tracks the sun's altitude angle, but also tracks the sun's azimuth angle, thereby achieving the purpose of dual-axis tracking.

Compared with the fixed-installation photovoltaic power generation device, the utility model can realize the dual-axis tracking of the sun, and can perform manual tracking adjustment every once in a while, so that the solar cell module can better face the sun, so as to obtain more Illumination resources, so as to have higher power generation efficiency; compared with the photovoltaic power generation device with sun tracking automatic control system, the utility model does not use servo motor and its automatic control system, the structure is simplified, and the cost is reduced. The difference in actual power generation efficiency is not large. At the same time, the structural rigidity of the utility model is relatively good. There is no gap between the moving part and the fixed part in the photovoltaic power generation device with a sun tracking automatic control system, and there is no need to rely on transmission parts. The self-locking to ensure the rigidity of the structure, after each tracking adjustment, the adjustable parts are locked, so as to ensure the rigidity of the structure, and the whole device has high reliability in use.

In a preferred embodiment of the present utility model, the rear pillar includes an upper pillar and a lower pillar, and the upper pillar and the lower pillar are slidably socketed and connected, and a length adjustment mechanism is arranged between the upper pillar and the lower pillar, and the upper pillar and the lower pillar The struts are locked with screws or pins. With this embodiment, a length adjustment mechanism is provided between the upper pillar and the lower pillar, which can make the length adjustment process easy to operate; The socket structure has high connection rigidity; while the upper pillar and the lower pillar are locked by screws or pins, which can eliminate the gap required for adjustment between the upper pillar and the lower pillar and ensure the structural rigidity.

In a further embodiment of the utility model, the length adjustment mechanism is a screw nut mechanism, the nut of the screw nut mechanism is fixedly connected to the upper pillar, and the screw of the screw nut mechanism is rotatably installed on the lower pillar. Adopting this embodiment, the structure of the length adjustment mechanism is simple, and the nut can be moved on the screw rod by turning the screw rod, thereby driving the displacement between the upper pillar and the lower pillar to achieve the effect of length adjustment.

In another further embodiment of the utility model, the length adjustment mechanism is a rack and pinion mechanism, the rack of the rack and pinion mechanism is arranged on the upper pillar, and the gear of the rack and pinion mechanism is supported on the upper end of the lower pillar through the rotation of the gear shaft. . With this embodiment, the gear is rotated by rotating the gear shaft, which drives the upper pillar provided with the rack to move up and down, so as to achieve the effect of length adjustment.

In another further embodiment of the utility model, the length adjustment mechanism is a screw nut mechanism plus a worm gear mechanism, the nut of the screw nut mechanism is fixedly connected on the upper pillar, and the screw of the screw nut mechanism is installed on the lower pillar in rotation, and the worm gear and worm mechanism The worm wheel of the mechanism is fixedly connected on the screw, and the worm of the worm gear mechanism is rotatably installed on the corresponding position of the lower pillar. In this embodiment, a set of worm gear and worm mechanism is added on the basis of the above-mentioned screw and nut mechanism. By turning the worm, the worm wheel drives the screw of the screw and nut mechanism to rotate. Compared with the above screw and nut mechanism, the length adjustment is more convenient.

Description of drawings

The dual-axis tracking photovoltaic power generation device of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of an embodiment of a dual-axis tracking photovoltaic power generation device of the present invention.

FIG. 2 is a right side view of the structure shown in FIG. 1 .

Fig. 3 is a structural schematic diagram of the rear pillar in the dual-axis tracking photovoltaic power generation device of the present invention.

Fig. 4 is another structural schematic diagram of the rear pillar in the dual-axis tracking photovoltaic power generation device of the present invention.

Fig. 5 is another structural schematic diagram of the rear pillar in the dual-axis tracking photovoltaic power generation device of the present invention.

In the figure: 1-solar battery module, 2-battery module installation frame, 3-front pillar, 4-rear pillar, 5-base, 6-upper pillar, 7-lower pillar, 8-screw, 9-worm wheel, 10- Worm screw, 11-rack, 12-gear.

Detailed ways

In the dual-axis tracking photovoltaic power generation device shown in Figure 1 and Figure 2, the solar cell module 1 is fixedly installed on the battery module installation frame 2, and the battery module installation frame 2 is supported on the front pillar 3 and the rear pillar 4; The number of front pillars 3 is one, and its structural form is a square pipe rod structure with fixed length, and its lower end is fixedly supported on the foundation; the number of said rear pillars 4 is two, and the lower ends of the two rear pillars 4 are respectively passed through spherical The hinge is supported on the base 5, of course, the base 5 is extended to the position of the front pillar 3, and the lower end of the front pillar 3 can also be supported on the base 5; the battery assembly installation frame 2 and the one front The pillar 3 and the two rear pillars 4 are connected by a spherical hinge, the spherical hinge of the front pillar 3 is located in the middle of the front frame of the battery assembly installation frame 2, and the spherical hinges of the two rear pillars 4 are respectively located in the battery assembly installation frame 2 The left and right sides of the rear frame; the two rear pillars 4 are rod structures with adjustable length.

Figure 3 shows a structural form of the rear pillar 4. The rear pillar 4 is composed of an upper pillar 6 and a lower pillar 7. The upper end surface of the upper pillar 6 and the lower end surface of the lower pillar 7 are the installation surfaces of the spherical hinge. , the main body of the upper pillar 6 is a square tube rod, the main body of the lower pillar 7 is a channel steel rod, the lower pillar 7 is sleeved on the outside of the upper pillar 6, and several screw holes are provided on both sides of the lower pillar 7 for installation. The set screw is used to lock the position of the upper pillar 6 and the lower pillar 7 after each adjustment is completed, forming a rigid member.

Between the upper pillar 6 and the lower pillar 7, a screw nut mechanism is provided as the length adjustment mechanism of the rear pillar 4, and the lower end surface of the upper pillar 6 is provided with a screw hole, which is used as the nut of the screw nut mechanism, and the screw rod 8 The threaded end is screwed into the screw hole, and the other end of the screw rod 8 is installed in the mounting seat hole located in the lower part of the lower pillar 7, and a square tenon is arranged at the end of the screw rod 8, which can be rotated through the square tenon with a wrench screw 8 to adjust the length of the rear strut 4.

Figure 4 shows another structural form of the rear pillar 4, this structural form is improved on the basis of the structure shown in Figure 3, the difference is that the end of the screw rod 8 is not set as a square tenon, but is fixedly installed There is a worm gear 9 of the worm gear mechanism, and the worm gear 10 of the worm gear mechanism is installed on the corresponding position of the lower pillar 7. One end of the worm gear 10 is set as a square tenon, and a wrench can be used to rotate the worm screw 10 through the square tenon so that the worm gear 9 drives the screw nut. The screw rod 8 of the mechanism rotates, and compared with the above-mentioned structure shown in Figure 3, the adjustment is easier and more convenient.

Fig. 5 has shown another kind of structure form of rear pillar 4, compare with the structure of Fig. 3, Fig. 4, difference is that described length adjusting mechanism is a rack and pinion mechanism, and the rack 11 of rack and pinion mechanism is arranged on On the upper pillar 6, the gear 12 of the rack and pinion mechanism is supported on the upper end of the lower pillar 7 through the rotation of the gear shaft, and the gear 12 is rotated by rotating the gear shaft, driving the upper pillar 6 provided with the rack 11 to move up and down to achieve the effect of length adjustment .

The above only lists some preferred implementations of the utility model, but the utility model is not limited thereto, and many improvements and transformations can be made without violating the basic principles of the utility model. Such as: the two sides of the lower pillar 7 do not necessarily have to be provided with several screw holes to install the set screws, but several pin holes can be processed on the corresponding two sides of the upper pillar 6 and the lower pillar 7, each After the second adjustment is completed, insert the pin into the corresponding pin hole, which can also play the role of locking the position and making the upper strut 6 and the lower strut 7 form a rigid member; the length set between the upper strut 6 and the lower strut 7 The adjustment mechanism is not necessarily limited to the three forms described above, and there can also be other more forms of length adjustment mechanisms, as long as the position between the upper pillar 6 and the lower pillar 7 can be changed, the rear pillar 4 can be changed in length. Therefore, as long as the improvements and transformations made on the basis of the basic principles of the present utility model are considered to fall within the protection scope of the present utility model.

Claims (5)

1. A dual-axis tracking photovoltaic power generation device, including a solar cell module (1), a cell module installation frame (2), a front pillar (3) and a rear pillar (4), and the solar cell module (1) is fixedly connected to the battery module On the installation frame (2), the battery assembly installation frame (2) is supported on the front pillar (3) and the rear pillar (4), characterized in that: the number of the front pillar (3) is one, the The front pillar (3) is connected with the battery module installation frame (2) through a spherical hinge, and the front pillar (3) is a rod-type structure with a fixed length; the number of the rear pillars (4) is two, and the two rear pillars The upper ends of (4) are connected to the battery module installation frame (2) through spherical hinges, and the lower ends of the two rear pillars (4) are respectively supported on the base (5) through spherical hinges. The two rear pillars (4) are Adjustable length pole construction. 2. The dual-axis tracking photovoltaic power generation device according to claim 1, characterized in that: the rear pillar (4) includes an upper pillar (6) and a lower pillar (7), and the upper pillar (6) and the lower pillar (7) ) are slidably socketed and connected, and a length adjustment mechanism is arranged between the upper pillar (6) and the lower pillar (7), and the upper pillar (6) and the lower pillar (7) are locked by screws or pins. 3. The dual-axis tracking photovoltaic power generation device according to claim 2, characterized in that: the length adjustment mechanism is a screw and nut mechanism, the nut of the screw and nut mechanism is fixedly connected to the upper pillar (6), and the screw of the screw and nut mechanism (8) Rotate and install on the lower pillar (7). 4. The dual-axis tracking photovoltaic power generation device according to claim 2, characterized in that: the length adjustment mechanism is a rack-and-pinion mechanism, and the rack (11) of the rack-and-pinion mechanism is set on the upper pillar (6). The gear (12) of the rack and pinion mechanism is rotatably supported on the upper end of the lower pillar (7) by the pinion shaft. 5. The dual-axis tracking photovoltaic power generation device according to claim 2, characterized in that: the length adjustment mechanism is a screw nut mechanism plus a worm gear mechanism, the nut of the screw nut mechanism is fixedly connected to the upper pillar (6), and the screw The screw of the nut mechanism is rotatably installed on the lower pillar (7), the worm wheel (9) of the worm gear mechanism is fixedly connected to the screw (8), and the worm (10) of the worm gear mechanism is rotatably installed on the lower pillar (7). corresponding position.

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