Photovoltaic module caching device

Abstract

The utility model discloses a photovoltaic module buffer device, it includes conveying unit and elevating buffer mechanism, conveying unit is used for conveying photovoltaic module, it includes parallel arrangement's several conveying wheel axle and drive several conveying wheel axle rotation's rotation drive module, each conveying wheel axle all has the coaxial arrangement of several conveying wheels of conveying photovoltaic module, elevating buffer mechanism is used for lifting the photovoltaic module on conveying unit and stores or will store photovoltaic module and put into conveying unit. The utility model can avoid the quality problem that the debris is bonded to the photovoltaic module, can improve the quality of photovoltaic module.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic module manufacturing technology, and in particular relates to a photovoltaic module buffer device. [Background Technology]

[0002] In the automated production line process of photovoltaic modules, under normal operation, the cycle time of products coming off the production line at each station is consistent. If a malfunction occurs at a later station, it will cause material blockage at the earlier station, which will lead to the shutdown of all stations and affect normal production. Therefore, it is necessary to set up buffer devices between appropriate stations to temporarily store materials on the conveyor line and automatically place the buffered materials onto the conveyor line.

[0003] Existing buffering devices, such as the low-cost and high-efficiency photovoltaic module buffering device (application number 2025200924361) and the photovoltaic module buffering device (application number 2025208150852), can all achieve the buffering action of photovoltaic modules. However, in the above solutions, the photovoltaic modules are transported by belts. The belts transport the photovoltaic modules through direct contact between the belt surface and the photovoltaic modules, i.e., the belts transport the photovoltaic modules through planar contact. In order to ensure the stability of the transport, the belts are generally set with a certain width, which results in a large contact area of ​​planar contact. Some debris from the photovoltaic modules or some debris from the environment will remain on the surface of the belt. The debris attached to the belt surface will stick to the surface of the photovoltaic modules. The debris stuck to the surface of the photovoltaic modules will cause defects in the subsequent coating or encapsulation work of the photovoltaic modules, especially perovskite photovoltaic modules, which will cause pinhole problems in the perovskite layer, thereby affecting the quality of perovskite photovoltaic modules and reducing the yield of products. Therefore, belt conveyors are not suitable for buffering devices in perovskite photovoltaic modules. There is an urgent need to design a photovoltaic module buffering device to ensure the cleanliness of the conveying and buffering environment.

[0004] Therefore, it is necessary to provide a photovoltaic module caching device to solve the above-mentioned technical problems. [Utility Model Content]

[0005] The main purpose of this invention is to provide a photovoltaic module buffer device that can prevent debris from sticking to the photovoltaic module and thus improve the quality of the photovoltaic module.

[0006] This utility model achieves the above objective through the following technical solution: a photovoltaic module buffer device, comprising...

[0007] A conveying unit for conveying photovoltaic modules includes several conveying wheel shafts arranged in parallel and a rotary drive module that drives the several conveying wheel shafts to rotate simultaneously. Several conveying wheels for conveying photovoltaic modules are coaxially arranged on each of the conveying wheel shafts.

[0008] A lifting and buffering mechanism is used to lift the photovoltaic modules on the conveying unit for buffering or to place the buffered photovoltaic modules onto the conveying unit.

[0009] Furthermore, the rotary drive module includes a drive shaft disposed at one end of the conveyor wheel shaft and perpendicular to the conveyor wheel shaft, and a drive assembly for driving the drive shaft to rotate. The drive shaft is provided with a plurality of drive wheels, and one end of the conveyor wheel shaft is provided with a driven wheel that cooperates with the drive wheels for transmission.

[0010] Furthermore, the drive assembly includes a first motor, a drive shaft driven by the first motor to rotate about a vertical axis, and a drive gear disposed at the end of the drive shaft. A driven gear that meshes with the drive gear is disposed on the drive shaft.

[0011] Furthermore, in the meshing transmission, one of the drive gears and the driven gear is made of plastic and the other of metal; in the cooperating transmission, one of the driving wheel and the driven wheel is made of plastic and the other of metal.

[0012] Furthermore, the conveying wheel is configured as a disc, and the thickness of the conveying wheel gradually decreases from the center to the outer periphery.

[0013] Furthermore, the lifting and buffering mechanism includes a lifting drive module, a lifting plate driven by the lifting drive module to perform lifting and lowering movements, and several layers of support units arranged vertically and intermittently on the lifting plate to support the photovoltaic modules.

[0014] Furthermore, the lifting drive module includes a second motor, a rotating shaft driven by the second motor to rotate, and transmission screws disposed at both ends of the rotating shaft, with the lifting plate fixedly connected to each transmission screw;

[0015] The support unit includes a first support member detachably disposed on the front side of the lifting frame and a second support member detachably disposed on the rear side of the lifting frame. The first support member and the second support member of each layer are located at the same height and together form a support plane for supporting the photovoltaic module.

[0016] Furthermore, the conveying unit is equipped with a counting sensor for counting photovoltaic modules and a photoelectric sensor for detecting whether the photovoltaic modules have been conveyed to the correct position.

[0017] Furthermore, the conveying unit is provided in three parts, the three conveying units are set at the same height and the conveying direction is consistent, and an avoidance gap is provided between each two adjacent conveying units to avoid the support unit.

[0018] Furthermore, it also includes a fan and a filter, which work together to ensure the cleanliness of the buffer device.

[0019] Compared with the prior art, the beneficial effects of the photovoltaic module buffer device of this utility model are as follows:

[0020] (1) By connecting the conveyor unit and the conveyor line on the processing line, the lifting and buffering mechanism can lift or place the photovoltaic module, thereby realizing the buffering and placement of the photovoltaic module. Moreover, the conveyor unit uses a conveyor wheel to transport the photovoltaic module. The conveyor wheel is disc-shaped and thin. The contact surface between the conveyor wheel and the photovoltaic module is close to line contact. It is difficult for debris to adhere to the conveyor surface of the conveyor wheel. That is, it is difficult for debris to be transferred to the photovoltaic module through the conveyor wheel. Therefore, by using the conveyor wheel provided in this solution to transport the photovoltaic module, the quality problems caused by debris sticking to the photovoltaic module can be avoided, and the quality of the photovoltaic module can be improved.

[0021] (2) In the transmission of the transmission wheel or gear, the two that cooperate with each other, one of which is made of plastic and the other of metal, are transmitted through the cooperation of metal and plastic. They have good self-lubrication, can increase the transmission torque, and reduce the noise during operation.

[0022] (3) It is equipped with a fan and a filter. The fan and the filter work together to improve the cleanliness of the buffer device, thereby avoiding the quality problems caused by debris sticking to the photovoltaic module and improving the quality of the photovoltaic module. [Attached Image Description]

[0023] Figure 1 This is a three-dimensional structural diagram of the photovoltaic module buffer device according to an embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the conveying unit according to an embodiment of the present utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the rotary drive module according to an embodiment of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the lifting plate and support unit according to an embodiment of the present utility model;

[0027] The numbers in the diagram represent:

[0028] 100 - Photovoltaic module buffer device;

[0029] 1-Conveying unit, 1a-First conveying unit, 1b-Second conveying unit, 1c-Third conveying unit, 11-Conveying wheel axle, 12-Rotary drive module, 121-Transmission shaft, 122-Drive assembly, 1221-First motor, 1222-Drive shaft, 1223-Drive gear, 123-Driving wheel, 124-Driven wheel, 125-Driven gear, 13-Conveying wheel, 14-Conveying frame;

[0030] 2- Clearance;

[0031] 3-Lifting and caching mechanism, 31-Lifting plate, 32-Supporting unit, 321-First support member, 322-Second support member, 33-Lifting drive module, 331-Second motor, 332-Rotating shaft, 333-Transmission screw, 334-Steering device;

[0032] 4-Frame, 41-Slide rail.

Detailed Implementation Methods

[0033] Please refer to Figures 1-4 This embodiment is a photovoltaic module buffer device 100, which includes:

[0034] The conveying unit 1 is used to convey photovoltaic modules. It includes a plurality of conveying wheel shafts 11 arranged in parallel and a rotary drive module 12 that drives the plurality of conveying wheel shafts 11 to rotate simultaneously. Each conveying wheel shaft 11 is coaxially provided with a plurality of conveying wheels 13 for conveying photovoltaic modules.

[0035] The lifting and buffering mechanism 3 is used to lift the photovoltaic modules on the conveying unit 1 for buffering or to place the buffered photovoltaic modules onto the conveying unit 1.

[0036] The rotary drive module 12 includes a drive shaft 121 disposed at one end of the conveyor wheel shaft 11 and perpendicular to the conveyor wheel shaft 11, and a drive assembly 122 for driving the drive shaft 121 to rotate. The drive shaft 121 has several driving wheels 123, and one end of the conveyor wheel shaft 11 has a driven wheel 124 that cooperates with the driving wheels 123 for transmission. Both the conveyor wheel shaft 11 and the drive shaft 121 are rotatably mounted on the conveyor frame 14 via bearings. The several driving wheels 123 on the drive shaft 121 and the several driven wheels 124 at the ends of the conveyor wheel shafts 11 cooperate one-to-one for transmission, and rotation of the drive shaft 121 can drive the several conveyor wheel shafts 11 to rotate simultaneously.

[0037] The drive assembly 122 includes a first motor 1221, a drive shaft 1222 driven by the first motor 1221 to rotate around a vertical axis, and a drive gear 1223 disposed at the end of the drive shaft 1222. A driven gear 125 is disposed on the drive shaft 121 to mesh with the drive gear 1223. When the first motor 1221 operates, it causes the drive shaft 1222 to drive the drive gear 1223 to rotate. The drive gear 1223 meshes with the driven gear 125, thereby driving the drive shaft 121 to rotate. A plurality of driving wheels 123 on the drive shaft 121 correspond one-to-one with the driven wheels 124 at the ends of a plurality of conveyor wheel shafts 11, thereby driving the plurality of conveyor wheel shafts 11 to rotate simultaneously. The rotation of the plurality of conveyor wheel shafts 11 drives the plurality of conveyor wheels 13 to rotate, thereby realizing the conveying of photovoltaic modules.

[0038] To ensure low operating noise and high transmission torque, the drive gear 1223 and driven gear 125 of the meshing transmission are made of different materials: one is plastic and the other is metal. Transmission occurs through the combination of metal and plastic, which provides good self-lubrication, increases transmission torque, and reduces operating noise. The driving wheel 123 and driven wheel 124 of the meshing transmission are both gear drives. The pair of driving wheels 123 and driven wheels 124 in the meshing transmission are also made of different materials: one is plastic and the other is metal. Transmission occurs through the combination of metal and plastic, which provides good self-lubrication, increases transmission torque, and reduces operating noise.

[0039] In this embodiment, for ease of manufacturing, the driven gear 125 and the driving wheel 123 on the transmission shaft 121 are made of the same material, both being metal, while the driving gear 1223 and the driven wheel 124 are made of plastic. In other embodiments, the materials of the driven gear 125 and the driving wheel 123, as well as the driving gear 1223 and the driven wheel 124, can be adjusted according to actual conditions. No restrictions are imposed here, as long as a metal-plastic transmission method can be achieved.

[0040] In other embodiments, both the driving wheel 123 and the driven wheel 124 that cooperate in the transmission are provided with magnetic wheels, and the two magnetic wheels cooperate in the transmission.

[0041] The conveyor wheel 13 is disc-shaped and relatively thin. The conveyor wheel 13 uses its outer periphery to convey photovoltaic modules, and the thickness of the conveyor wheel 13 gradually decreases from the center to the outer periphery. Because the outer periphery of the conveyor wheel 13 is very thin, the contact surface between the conveyor wheel 13 and the photovoltaic module is close to line contact. It is difficult for debris to adhere to the conveying surface of the conveyor wheel 13. That is, it is difficult for debris to be transferred to the photovoltaic module through the conveyor wheel 13. Therefore, using the conveyor wheel 13 provided in this solution to convey photovoltaic modules can avoid quality problems caused by debris sticking to the photovoltaic module and can improve the quality of the photovoltaic module.

[0042] In this embodiment, three conveyor shafts 11 are provided. For a compact layout, the spacing between the three conveyor shafts 11 is very small. Therefore, no driven wheel 124 is provided on the middle conveyor shaft 11. Correspondingly, no driving wheel 123 cooperating with the driven wheel 124 is provided on the drive shaft 121. However, the middle conveyor shaft 11 is rotatably mounted on the conveyor frame 14 and can rotate on its own. One end of each of the two side conveyor shafts 11 is provided with a driven wheel 124, and the drive shaft 121 is also provided with a driving wheel 123 cooperating with the driven wheel 124. The drive assembly 122 can drive the drive shaft 121 to rotate, thereby driving the conveyor shafts 11 to rotate. The rotation of several conveyor shafts 11 drives several conveyor wheels 13 to rotate, realizing the conveying of photovoltaic modules.

[0043] In other embodiments, multiple conveyor shafts 11 may be provided. Each or part of the conveyor shafts 11 is provided with a driven wheel 124, and a drive wheel 123 corresponding to and cooperating with the driven wheel 124 is provided on the drive shaft 121. The drive assembly 122 can drive the drive shaft 121 to rotate, thereby driving the multiple conveyor shafts 11 to rotate. The rotation of the multiple conveyor shafts 11 drives the rotation of several conveyor wheels 13 to realize the conveying of photovoltaic modules. The number of conveyor shafts 11 is not limited here.

[0044] The lifting and buffering mechanism 3 includes a lifting drive module 33, a lifting plate 31 driven by the lifting drive module 33 to perform lifting and lowering movements, and several layers of support units 32 arranged vertically and intermittently on the lifting plate 31 to support photovoltaic modules.

[0045] The lifting drive module 33 includes a second motor 331, a rotating shaft 332 driven by the second motor 331, and transmission screws 333 at both ends of the rotating shaft 332. The second motor 331 is fixed to the top of the frame 4. The rotating shaft 332 is in a horizontal state, and a steering mechanism 334 is provided at both ends of the rotating shaft 332. Both transmission screws 333 are in a vertical state and are synchronously transmitted with the rotating shaft 332 through the steering mechanism 334. A lifting plate 31 is fixedly connected to each transmission screw 333. When the second motor 331 drives the rotating shaft 332 to rotate, the transmission screws 333 can drive the lifting frame 31 to move up and down. To ensure the stability of the up and down movement of the lifting plate 31, a slide rail 41 is provided on the frame 4, and the lifting plate 31 is slidably mounted on the frame 4 by a slider. The lifting drive module 33 on the lifting buffer mechanism 3 has a simple structure. It drives the transmission screw 333 through the second motor 331, and the transmission screw 333 drives the lifting plate 31 to move up and down. The support unit 32 set on the lifting plate 31 can realize the buffering and delivery actions. Compared with the existing technology, it reduces the use of sprocket group, simplifies the structure, reduces costs, and also reduces the height of the lifting buffer mechanism 3, thereby reducing the overall height of the buffer device.

[0046] The support unit 32 includes a first support member 321 detachably disposed on the front side of the lifting frame 31 and a second support member 322 detachably disposed on the rear side of the lifting frame 31. Several layers of support units 32 are disposed on the lifting plate 31, meaning that several first support members 321 are spaced vertically at intervals on the front side of the lifting frame 31, and several second support members 322 are spaced vertically at intervals on the rear side. Each layer of first support members 321 and second support members 322 is at the same height and together forms a support plane for supporting the photovoltaic modules. Both the first support members 321 and second support members 322 are detachably disposed on the lifting frame 31 using fasteners. Correspondingly, the lifting frame 31 has several positioning holes that cooperate with the fasteners. If photovoltaic modules of different thicknesses need to be buffered, the fasteners can be removed, the vertical spacing of the first support members 321 and second support members 322 can be adjusted, and then the fasteners can be tightened to adjust the vertical position of the first support members 321 and second support members 322, thereby adapting to photovoltaic modules of different thicknesses and improving the versatility of the buffering device. The fastener may be selected from one of the bolts, screws, and pins, or other fasteners of different structures, without limitation.

[0047] In this embodiment, both the first support member 321 and the second support member 322 are configured as support rods. In other embodiments, the first support member 321 and the second support member 322 may be configured as support plates or support trays. This can be set according to the actual situation and is not limited here.

[0048] In other embodiments, if the first support member 321 and the second support member 322 are support rods, an auxiliary support rod 324 extending laterally can be provided on the outside of the support rods. The auxiliary support rod 324 can further expand the support surface and ensure the stability when supporting the photovoltaic module. To avoid interference between the auxiliary support rod 324 and the conveying unit 1, the auxiliary support rod 324 is only provided on the left and right sides of the conveying unit 1.

[0049] The conveying unit 1 is equipped with a photoelectric sensor to detect whether the photovoltaic modules have been conveyed to the correct position. The conveying unit 1 is also equipped with a counting sensor to count the photovoltaic modules being buffered or deployed. When the buffer device is full of photovoltaic modules, the counting sensor transmits the data to the counting system, prompting the employee to replace the buffer device and repeat the buffering process. When all the photovoltaic modules in the buffer device have been deployed to the conveying unit 1, the counting sensor transmits the data to the counting system, prompting the employee that the deployment process is complete.

[0050] In this embodiment, to facilitate the connection of the conveying unit 1 with other conveying lines and to ensure the buffering and deployment of photovoltaic modules, three conveying units 1 are provided. The three conveying units are set at the same height and have the same conveying direction. A clearance gap 2 is provided between each pair of adjacent conveying units 1 to avoid the support unit 32. Specifically, the three conveying units 1 are, from front to back, the first conveying unit 1a, the second conveying unit 1b, and the third conveying unit 1c. The second conveying unit 1b is located inside the first support member 321 and the second support member 322. A clearance gap 2 is provided between the first conveying unit 1a and the second conveying unit 1b to allow the first support member 321 to move up and down. A clearance gap 2 is provided between the second conveying unit 1b and the third conveying unit 1c to allow the second support member 322 to move up and down. Both the first support member 321 and the second support member 322 are located within the clearance gap 2 and move up and down within the clearance gap 2. Specifically, there are two conveying units: a first conveying unit 1a and a third conveying unit 1c, one of which is an infeed conveying unit and the other is an outfeed conveying unit. The lifting and buffering mechanism 3 lifts the photovoltaic modules from the second conveying unit 1b for buffering or places the buffered photovoltaic modules onto the second conveying unit 1b. In other embodiments, to simplify the structure of the conveying unit 1, the first conveying unit 1a and the third conveying unit 1c may be omitted. The second conveying unit 1b directly receives the photovoltaic modules from the processing station, and a gap is provided between the second conveying unit 1b and the conveyor line on the processing station to allow the support unit 32 to move up and down.

[0051] To prevent environmental debris from falling onto the photovoltaic modules, conveying unit 1, or lifting and buffering mechanism 3, the buffering device also includes a fan and a filter. The fan and filter work together to achieve a Class 1000 cleanliness level, meeting the cleanliness requirements of the modules and improving the cleanliness of the buffering device. This prevents quality problems caused by debris adhering to the photovoltaic modules, thus improving the quality of the photovoltaic modules. The number and installation position of the fans and filters are not limited in this embodiment and can be adjusted according to actual conditions. Since the photovoltaic module production process involves heating that melts the adhesive, the surface temperature of the photovoltaic modules rises. If a large number of high-temperature photovoltaic modules are buffered on the buffering device, the heat inside the device will be too high, which is detrimental to production operations. Furthermore, it will cause the components of the buffering device to overheat, leading to component failure over time and reducing the lifespan of the buffering device. Therefore, the fans blowing air onto the surface of the photovoltaic modules can also reduce the surface temperature of the photovoltaic modules, preventing the components of the lifting and buffering mechanism from overheating and extending the lifespan of the lifting and buffering mechanism, thereby improving the overall lifespan of the buffering device.

[0052] When using the photovoltaic module buffering device 100 provided in this solution, if it is necessary to buffer the photovoltaic modules at the processing station, the first conveying unit 1a or the third conveying unit 1c is connected to the conveyor line of the processing station. The photovoltaic modules are conveyed to the second conveying unit 1b via the first conveying unit 1a or the third conveying unit 1c. The counting sensor counts the photovoltaic modules, and the photoelectric sensor senses that the photovoltaic modules have been conveyed into place. At this time, the first support member 321 and the second support member 322 are within the clearance gap 2 and located below the photovoltaic modules. The second motor 331 drives the rotating shaft 332 to rotate, and the transmission screw 333 drives the lifting frame 31 to rise, so that the first support member 321 and the second support member 322 support the photovoltaic modules as they rise. The photovoltaic module buffering device 100 buffers photovoltaic modules from top to bottom. When the photovoltaic modules on the buffering device need to be automatically placed onto the processing station, the first conveying unit 1a or the third conveying unit 1c is connected to the conveyor line of the processing station. The second motor 331 drives the rotating shaft 332 to rotate in the opposite direction. The transmission screw 333 drives the lifting frame 31 to descend, supporting the first support member 321 and the second support member 322 of the photovoltaic module to descend and place the photovoltaic module onto the second conveying unit 1b. Then, the photovoltaic module is conveyed to the conveyor line of the processing station via the third conveying unit 1c or the first conveying unit 1a, thus realizing the placement of the photovoltaic module. When the photovoltaic module buffering device 100 buffers, it buffers from top to bottom. When placing the photovoltaic module outward, it starts from bottom to top.

[0053] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A photovoltaic module buffer device, characterized in that, It includes: A conveying unit for conveying photovoltaic modules includes several conveying wheel shafts arranged in parallel and a rotary drive module that drives the several conveying wheel shafts to rotate simultaneously. Several conveying wheels for conveying photovoltaic modules are coaxially arranged on each of the conveying wheel shafts. A lifting and buffering mechanism is used to lift the photovoltaic modules on the conveying unit for buffering or to place the buffered photovoltaic modules onto the conveying unit.

2. The photovoltaic module buffer device as described in claim 1, characterized in that: The rotary drive module includes a drive shaft disposed at one end of the conveyor wheel shaft and perpendicular to the conveyor wheel shaft, and a drive assembly for driving the drive shaft to rotate. The drive shaft is provided with a plurality of drive wheels, and one end of the conveyor wheel shaft is provided with a driven wheel that cooperates with the drive wheels for transmission.

3. A photovoltaic module buffer device as described in claim 2, characterized in that: The drive assembly includes a first motor, a drive shaft driven by the first motor to rotate around a vertical axis, and a drive gear disposed at the end of the drive shaft. A driven gear that meshes with the drive gear is disposed on the drive shaft.

4. A photovoltaic module buffer device as described in claim 3, characterized in that: A pair of drive gears and driven gears in meshing transmission, one of which is made of plastic and the other of metal; a pair of driving wheel and driven wheel in cooperating transmission, one of which is made of plastic and the other of metal.

5. A photovoltaic module buffer device as described in claim 1, characterized in that: The conveying wheel is configured as a disc, and the thickness of the conveying wheel decreases from the center to the outer periphery.

6. A photovoltaic module buffer device as described in claim 1, characterized in that: The lifting and buffering mechanism includes a lifting drive module, a lifting plate driven by the lifting drive module to move up and down, and several layers of support units arranged at intervals on the lifting plate to support the photovoltaic modules.

7. A photovoltaic module buffer device as described in claim 6, characterized in that: The lifting drive module includes a second motor, a rotating shaft driven by the second motor to rotate, and transmission screws disposed at both ends of the rotating shaft. The lifting plate is fixedly connected to each transmission screw. The support unit includes a first support member detachably disposed on the front side of the lifting frame and a second support member detachably disposed on the rear side of the lifting frame. The first support member and the second support member of each layer are located at the same height and together form a support plane for supporting the photovoltaic module.

8. A photovoltaic module buffer device as described in claim 1, characterized in that: The conveying unit is equipped with a counting sensor to count the photovoltaic modules and a photoelectric sensor to detect whether the photovoltaic modules have been conveyed to the correct position.

9. A photovoltaic module buffer device as described in claim 6, characterized in that: The conveying unit is provided in three parts. The three conveying units are set at the same height and have the same conveying direction. A clearance is provided between each pair of adjacent conveying units to avoid the support unit.

10. A photovoltaic module buffer device as described in claim 1, characterized in that: It also includes a fan and a filter, which work together to ensure the cleanliness of the buffer device.

Images