Light-weight double-sided power generation photovoltaic module reflecting device

Abstract

The utility model belongs to the technical field of photovoltaic power generation, and discloses a light-weight double-sided power generation photovoltaic module reflecting device, which comprises a reflecting module, the reflecting module comprises a driving mechanism and a reflecting mechanism, the reflecting mechanism is detachably mounted on the driving mechanism, and the driving mechanism is used for supporting the reflecting mechanism. The driving mechanism is also used for driving the reflection mechanism to rotate to adjust the orientation of the reflection mechanism, and the reflection mechanism is used for reflecting sunlight to the back of the photovoltaic module. Through the arrangement of the reflection device, the reflection mechanism in the reflection device can cooperate with the ground to reflect sunlight to the back of the photovoltaic module, thereby increasing the power generation amount of the back of the photovoltaic module, and improving the power generation efficiency of the photovoltaic module. And the driving mechanism can drive the reflection mechanism to rotate so as to adjust the orientation of the reflection mechanism, so that the position of the reflection mechanism can be adaptively adjusted according to the position change of the sun.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic power generation, and in particular relates to a lightweight double-sided power generation photovoltaic component reflector. Background Art

[0002] Bifacial photovoltaic modules can not only generate electricity by directly receiving sunlight on the front side, but also by receiving sunlight reflected from the ground on the back side. Therefore, their power generation efficiency is higher than that of traditional single-sided photovoltaic modules. In actual applications, bifacial photovoltaic modules can increase the power generation by about 10%-30% compared with single-sided photovoltaic modules.

[0003] In the manufacturing process of bifacial photovoltaic modules, lightweight but high-strength materials such as lightweight alloys and polymer composite materials can be selected to reduce the overall weight of the module, thereby manufacturing lightweight bifacial photovoltaic modules. Although lightweight bifacial photovoltaic modules can generate electricity by receiving sunlight reflected from the ground on the back, the ground absorbs most of the light, so only a small part of the light will be reflected to the back of the photovoltaic module, resulting in less improvement in the power generation of lightweight bifacial photovoltaic modules compared to traditional single-sided photovoltaic modules. Utility Model Content

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a lightweight double-sided photovoltaic assembly reflector device to solve the problems in the above-mentioned background technology.

[0005] In order to solve the above-mentioned technical problems, the utility model provides a lightweight double-sided photovoltaic module reflection device, including a reflection assembly, the reflection assembly includes a driving mechanism and a reflection mechanism, the reflection mechanism is detachably installed on the driving mechanism, the driving mechanism is used to support the reflection mechanism, the driving mechanism is also used to drive the reflection mechanism to rotate to adjust the direction of the reflection mechanism, and the reflection mechanism is used to reflect sunlight to the back of the photovoltaic module.

[0006] Through such a design, the power generation on the back of the photovoltaic module can be increased, and the power generation efficiency of the photovoltaic module can be improved.

[0007] Preferably, the reflective assembly also includes a light sensor and a control component connected to the driving mechanism. The light sensor and the driving mechanism are both electrically connected to the control component. The light sensor is used to detect the position of the sun and the light intensity. The control component is used to adjust the direction of the reflective mechanism according to the signal of the light sensor.

[0008] Through such a design, it can be ensured that the back of the photovoltaic module always receives a large amount of reflected light, thereby further improving the power generation efficiency of the photovoltaic module.

[0009] Preferably, the optical sensing element comprises an optical sensor and a supporting member, the optical sensor is connected to the supporting member, and the supporting member is connected to the driving mechanism.

[0010] Such a design can avoid the optical sensor and the driving mechanism being too close to each other, thereby preventing the driving mechanism from affecting the detection of the optical sensor.

[0011] Preferably, the reflection mechanism comprises a reflection member, which is detachably mounted on the driving mechanism and is used to reflect sunlight to the back of the photovoltaic module.

[0012] With this design, the reflector can reflect sunlight to the back of the photovoltaic module.

[0013] Preferably, the reflecting mechanism includes a supporting part, a reflecting part and a fixing part. The supporting part is detachably mounted on the driving mechanism, the reflecting part is arranged in contact with the supporting part and is used to reflect sunlight to the back of the photovoltaic module, and the fixing part is mounted on the supporting part and is used to fix the reflecting part to one side of the supporting part.

[0014] Such a design makes it easy to replace the reflecting part.

[0015] Preferably, the fixing portion includes two symmetrically distributed fixing sub-portions, each of which includes an elastic member connected to the supporting portion and a pressing member connected to the elastic member, and the pressing member is used to fix the reflecting portion to one side of the supporting portion.

[0016] Through such a design, both hard reflective components and soft reflective components can be fixed.

[0017] Preferably, the length of the pressing piece is greater than the length of the reflecting portion.

[0018] Such a design can avoid the end area of ​​the soft reflector being unable to be fixed.

[0019] Preferably, two reflective components are provided, and the two reflective components are symmetrically distributed.

[0020] Through such a design, the power generation efficiency of photovoltaic modules can be further improved.

[0021] The beneficial effects of the utility model are as follows: through the setting of the reflection device, the reflection device can cooperate with the ground to reflect sunlight to the back of the photovoltaic module, thereby increasing the power generation on the back of the photovoltaic module and improving the overall power generation efficiency of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1This is a schematic diagram of the positional relationship of the lightweight double-sided photovoltaic assembly reflector device relative to the photovoltaic assembly in an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the composition structure of the reflective assembly of an embodiment of the utility model;

[0025] Figure 3 This is another schematic diagram of the composition structure of the reflective assembly of the embodiment of the utility model;

[0026] Figure 4 yes Figure 2 Schematic diagram of the local structure;

[0027] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective.

[0028] The reference numerals are as follows:

[0029] 1. Reflection component;

[0030] 11. Driving mechanism;

[0031] 12. Reflection mechanism; 121. Reflection element; 122. Supporting part; 123. Reflection part;

[0032] 124, fixing part; 1241, fixing sub-part; 1241a, elastic part; 1241b, pressing part;

[0033] 13. optical sensing element; 131. optical sensor; 132. supporting element;

[0034] 14. Control parts;

[0035] 2. Photovoltaic panels.

[0036] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Example 1

[0039] like Figures 1 to 5As shown, the utility model provides a lightweight double-sided photovoltaic assembly reflection device, including a reflection assembly 1, the reflection assembly 1 includes a driving mechanism 11 and a reflection mechanism 12, the reflection mechanism 12 is detachably installed on the driving mechanism 11, the driving mechanism 11 is used to support the reflection mechanism 12, the driving mechanism 11 is also used to drive the reflection mechanism 12 to rotate to adjust the direction of the reflection mechanism 12, and the reflection mechanism 12 is used to reflect sunlight to the back of the photovoltaic assembly 2.

[0040] After the lightweight double-sided photovoltaic module 2 (hereinafter referred to as photovoltaic module 2) is installed on the roof or other areas, the reflector is installed on one side of the photovoltaic module 2. During use, the front of the photovoltaic module 2 faces the sunlight and the back faces away from the sunlight. The front of the photovoltaic module 2 directly receives sunlight to generate electricity. When the reflector is not in use, the back of the photovoltaic module 2 receives sunlight reflected from the ground to generate electricity.

[0041] It should be noted that the ground will absorb most of the light, and only a small part of the light will be reflected to the back of the photovoltaic module 2, resulting in less power generation on the back of the photovoltaic module 2; through the setting of the reflection device, the reflection mechanism 12 therein can cooperate with the ground to reflect sunlight to the back of the photovoltaic module 2, thereby increasing the power generation on the back of the photovoltaic module 2 and improving the power generation efficiency of the photovoltaic module 2, and the driving mechanism 11 can drive the reflection mechanism 12 to rotate to adjust the direction of the reflection mechanism 12, so that the position of the reflection mechanism 12 can be adaptively adjusted according to the change of the position of the sun.

[0042] It should be noted that the connection methods described in the present invention can all be regarded as detachable connections when not described as fixed connections, such as using threaded connections to achieve detachable connections.

[0043] Example 2

[0044] In this embodiment, the reflective assembly 1 also includes a light sensor 13 and a control component 14 connected to the driving mechanism 11. The light sensor 13 and the driving mechanism 11 are both electrically connected to the control component 14. The light sensor 13 is used to detect the position and light intensity of the sun, and the control component 14 is used to adjust the direction of the reflective mechanism 12 according to the signal of the light sensor 13.

[0045] The optical sensor 13 and the control element 14 are connected to the driving mechanism 11 but are not driven by the driving mechanism 11 .

[0046] Optionally, the driving mechanism 11 can be configured as a motor or a similar existing device, which has the function of driving the reflection mechanism 12 to rotate, and also has the function of supporting the optical sensor 13 and the control component 14 .

[0047] The driving mechanism 11 can be set to a more complex structure to achieve the purpose of making the reflective surface of the reflective mechanism 12 face more directions, as follows: the driving mechanism 11 can be set to a multi-axis robot arm (such as a six-axis robot), which has a high degree of flexibility and precision and can achieve complex motion trajectories in three-dimensional space. Through programming control, the robot arm can accurately adjust the direction of the reflective surface to maximize the amount of light it receives; the driving mechanism 11 can also be set to a spherical joint, which allows the connecting part to move in three degrees of freedom (i.e., the X-axis, the Y-axis, and the Z-axis). By combining the spherical joint with an appropriate driving unit (such as a motor and a reducer), a driving structure that can move in multiple directions can be created. This structure is relatively simple and low-cost.

[0048] Optionally, the control element 14 is configured as a controller.

[0049] The optical sensor 13, the control component 14, and the driving mechanism 11 constitute a device for automatically adjusting the direction of the reflecting surface of the reflecting mechanism 12. Here is a general working process of this device: the optical sensor 13 is used to detect the position of the sun, and the control component 14 controls the driving mechanism 11 to drive the reflecting mechanism 12 to adjust the angle according to the signal of the optical sensor 13. By tracking the position of the sun in real time, this device can ensure that the back of the photovoltaic module 2 always obtains a large amount of reflected light, thereby further improving the power generation efficiency of the photovoltaic module 2.

[0050] Example 3

[0051] In this embodiment, the optical sensing element 13 includes an optical sensor 131 and a supporting member 132 . The optical sensor 131 is connected to the supporting member 132 , and the supporting member 132 is connected to the driving mechanism 11 .

[0052] The optical sensor 131 is connected to the driving mechanism 11 via the support member 132 . This arrangement can prevent the optical sensor 131 from being too close to the driving mechanism 11 and thus prevent the driving mechanism 11 from affecting the detection of the optical sensor 131 .

[0053] The light sensor 131 is further explained as follows: the light sensor is based on the principle of photoelectric effect. When light shines on the surface of the photosensitive device, the photon energy is absorbed by the device, stimulating the electrons inside the device to jump to the conduction band, generating electron-hole pairs, and thus generating current. This current is proportional to the light intensity, so it can be used to measure the light intensity. For general light sensors, there is no need to point directly at the sun to measure the light intensity. They measure the overall light level in the environment, including direct sunlight and indirect sunlight (such as reflected light, scattered light, etc.). If a baffle is set between the light sensor 131 and the sun, the baffle will block part or all of the light from the sun. However, since the light sensor 131 measures the overall light intensity rather than the light from a specific light source, the effect of the baffle on the light sensor 131 depends on the material, size and position of the baffle.

[0054] The above is a general description of the working process of the device for automatically adjusting the direction of the reflecting surface of the reflecting mechanism 12. It should be further explained that other structures can be added to this device, such as a position sensor, which can be installed on the reflecting mechanism 12 to sense the current angle of the reflecting surface.

[0055] It should be further explained that the light sensor 131 can use a photodiode or a photoresistor (such as model: GL5528 or TMD2645); the position sensor can use a rotary encoder or a potentiometer (such as model: HEDS-5500 or WDD35D); the control component 14 can use a microcontroller (such as STM32F103C8T6) or a PLC (such as Siemens S7-1200).

[0056] Example 4

[0057] In this embodiment, the reflection mechanism 12 includes a reflection member 121 , which is detachably mounted on the driving mechanism 11 , and is used to reflect sunlight to the back of the photovoltaic module 2 .

[0058] In this embodiment, the reflective mechanism 12 is regarded as a reflective member 121. The reflective member 121 can adopt a variety of structures or objects, such as a flat aluminum plate. The aluminum plate itself has a high reflectivity, but it should be noted that its surface may be affected by factors such as oxidation, pollution or scratches, resulting in a decrease in reflectivity. Therefore, it is necessary to select high-quality aluminum plates and clean and maintain them regularly to maintain their reflective properties.

[0059] Example 5

[0060] In this embodiment, the reflecting mechanism 12 includes a supporting portion 122, a reflecting portion 123, and a fixing portion 124. The supporting portion 122 is detachably mounted on the driving mechanism 11. The reflecting portion 123 is disposed in contact with the supporting portion 122 and is used to reflect sunlight to the back of the photovoltaic component 2. The fixing portion 124 is installed on the supporting portion 122 and is used to fix the reflecting portion 123 on one side of the supporting portion 122.

[0061] In this embodiment, the reflection mechanism 12 is not regarded as the reflection part 123, which is at least composed of the support part 122, the reflection part 123, and the fixing part 124. At this time, the support part 122 can be set as a plate-like structure to support the reflection part 123 and the fixing part 124, and the reflection part 123 is fixed to one side of the support part 122 by the fixing part 124. The reflection part 123 is an actual reflection structure. Such a setting can facilitate the replacement of the reflection part 123.

[0062] Example 6

[0063] In this embodiment, the fixing portion 124 includes two symmetrically distributed fixing sub-portions 1241, each of which includes an elastic member 1241a connected to the supporting portion 122 and a pressing member 1241b connected to the elastic member 1241a. The pressing member 1241b is used to fix the reflecting portion 123 on one side of the supporting portion 122.

[0064] It should be noted that the reflective part 123 can be made of a harder object or structure or a softer object or structure. For example, it can be selected as a hard reflective member 121 such as an aluminum plate, a stainless steel plate, etc., or it can be selected as a soft reflective member 121 such as a reflective film, a reflective cloth, etc.; for the soft reflective member 121, it is lighter and easier to transfer, and is easy to install and replace, and has a lower cost; for the hard reflective member 121, it has higher reflection efficiency and durability.

[0065] When fixing the hard reflector 121 , a single fixing sub-section 1241 is used, but when fixing the soft reflector 121 , two fixing sub-sections 1241 are required to be used in combination.

[0066] It should be noted that the description of the symmetrical distribution of the two fixed sub-sections 1241 is supplemented here. When the support portion 122 is arranged perpendicular to the horizontal direction, the two fixed sub-sections 1241 are symmetrically distributed with the axis of the support portion 122 as the symmetry line, and the two fixed sub-sections 1241 can be distributed at intervals in the horizontal direction or in the vertical direction. No matter how they are arranged, two fixed sub-sections 1241 are required to be used in combination to fix various parts of the soft reflector 121.

[0067] When the fixing sub-part 1241 is fixed, part of the soft reflective member 121 is simultaneously attached to the supporting part 122 and the pressing member 1241 b , and under the action of the elastic member 1241 a , the pressing member 1241 b squeezes and fixes the soft reflective member 121 .

[0068] Optionally, the pressing piece 1241b is configured as a plate-like structure; and the elastic piece 1241a is configured as an elastic structure, such as a spring.

[0069] Example 7

[0070] In this embodiment, the length of the pressing member 1241 b is greater than the length of the reflecting portion 123 .

[0071] By setting the length of the pressing piece 1241 b to be greater than the length of the reflecting portion 123 , when the pressing piece 1241 b squeezes and fixes the soft reflecting piece 121 , it can be avoided that the end area of ​​the soft reflecting piece 121 cannot be fixed.

[0072] In order to further understand the above effects, further explanation is given here. When the supporting portion 122 is arranged perpendicular to the horizontal direction, the two fixed sub-portions 1241 are symmetrically distributed with the axis of the supporting portion 122 as the symmetry line, and the two fixed sub-portions 1241 are spaced apart along the horizontal direction. At this time, the length direction of the pressing piece 1241b and the length direction of the reflecting portion 123 are both perpendicular to the horizontal direction. By setting the length of the pressing piece 1241b to be greater than the length of the reflecting portion 123, along the vertical direction, both ends of the pressing piece 1241b can be separated from the reflecting portion 123.

[0073] Example 8

[0074] In this embodiment, two reflective components 1 are provided, and the two reflective components 1 are symmetrically distributed.

[0075] Regarding the symmetrical distribution of the two reflective components 1, it should be noted that, in some cases, the photovoltaic component 2 is provided with an axis, the two reflective components 1 are symmetrically distributed with the axis of the photovoltaic component 2 as the symmetry line, and the two reflective components 1 are distributed at intervals along the horizontal direction.

[0076] By increasing the number of reflective components 1 , the power generation efficiency of the photovoltaic component 2 can be further improved.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0078] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A lightweight double-sided photovoltaic module reflector, characterized in that: The reflective assembly (1) comprises a driving mechanism (11) and a reflecting mechanism (12); the reflecting mechanism (12) is detachably mounted on the driving mechanism (11); the driving mechanism (11) is used to support the reflecting mechanism (12); the driving mechanism (11) is also used to drive the reflecting mechanism (12) to rotate so as to adjust the direction of the reflecting mechanism (12); the reflecting mechanism (12) is used to reflect sunlight onto the back of the photovoltaic assembly (2).

2. The lightweight double-sided photovoltaic assembly reflector according to claim 1, characterized in that: The reflective assembly (1) further comprises a light sensor (13) and a control component (14) connected to the drive mechanism (11); the light sensor (13) and the drive mechanism (11) are both electrically connected to the control component (14); the light sensor (13) is used to detect the position and light intensity of the sun; and the control component (14) is used to adjust the orientation of the reflective mechanism (12) according to a signal from the light sensor (13).

3. The lightweight double-sided photovoltaic assembly reflector according to claim 2, characterized in that: The optical sensing component (13) comprises an optical sensor (131) and a support component (132); the optical sensor (131) is connected to the support component (132), and the support component (132) is connected to the driving mechanism (11).

4. The lightweight double-sided photovoltaic assembly reflector according to claim 1, characterized in that: The reflection mechanism (12) comprises a reflection piece (121), the reflection piece (121) is detachably mounted on the driving mechanism (11), and the reflection piece (121) is used to reflect sunlight to the back of the photovoltaic module (2).

5. The lightweight double-sided photovoltaic assembly reflector according to claim 1, characterized in that: The reflection mechanism (12) comprises a support portion (122), a reflection portion (123), and a fixing portion (124); the support portion (122) is detachably mounted on the driving mechanism (11); the reflection portion (123) is arranged in close contact with the support portion (122) and is used to reflect sunlight to the back of the photovoltaic module (2); and the fixing portion (124) is mounted on the support portion (122) and is used to fix the reflection portion (123) to one side of the support portion (122).

6. The lightweight double-sided photovoltaic assembly reflector according to claim 5, characterized in that: The fixing portion (124) comprises two symmetrically distributed fixing sub-portions (1241), each fixing sub-portion (1241) comprising an elastic member (1241a) connected to the supporting portion (122), and a pressing member (1241b) connected to the elastic member (1241a), wherein the pressing member (1241b) is used to fix the reflecting portion (123) to one side of the supporting portion (122).

7. The lightweight double-sided photovoltaic assembly reflector according to claim 6, characterized in that: The length of the pressing piece (1241b) is greater than the length of the reflecting portion (123).

8. The lightweight double-sided photovoltaic assembly reflector according to any one of claims 1 to 7, characterized in that: The number of reflective components (1) is two, and the two reflective components (1) are symmetrically distributed.

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