Post-layer EL power-on device and post-layer EL test system

Abstract

The utility model relates to a post-layer EL power-on device and a post-layer EL test system, when a post-layer EL test is carried out, a lifting mechanism drives a first power-on probe and a second power-on probe to descend to be in electrical contact with a photovoltaic module, and then a transmission module drives the photovoltaic module to move to a plurality of different test stations along an extension direction S; as the first power-on probe and the second power-on probe are both abutted against the photovoltaic module, under the action of friction force, when the photovoltaic module moves to different test stations, the power-on assembly can be synchronously driven to move to multiple different test stations along the extension direction S, and only the same power-on assembly needs to be adopted at the multiple different test stations. Compared with the prior art, a plurality of different power-on assemblies do not need to be configured, so that the number of power-on probes can be reduced, the maintenance cost is further reduced, in addition, only one power-on action is adopted for testing of a plurality of different test stations, the power-on actions do not need to be carried out on the different test stations respectively, and the test efficiency and the test passing rate are improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a post-layer EL power-on device and a post-layer EL testing system. Background Art

[0002] With the rapid development of the photovoltaic industry, the testing methods used in the quality control of photovoltaic modules have been continuously enhanced. The original appearance and electrical performance tests are no longer able to meet the industry's needs. Currently, a method for detecting potential defects in crystalline silicon solar cells and modules is widely used in the industry, namely EL testing (abbreviated as electroluminescence, also known as field-induced luminescence).

[0003] Currently, EL testing technology has been applied by many crystalline silicon solar cell and module manufacturers for finished product inspection or online product quality control of crystalline silicon solar cells and modules. Common EL testing methods for crystalline silicon solar cells and modules include: direct powering on the grid lines of the cell, powering on the grid lines at both ends of the cell string, powering on the busbars in front of the module end layer, and powering on the external power-on fixture after the layer. The power-on method of the external power-on fixture after the layer varies depending on the manufacturer's device. Usually, the power-on test work is repeated multiple times, which is a waste of manpower and material resources and has low testing efficiency. In addition, the contact position between the power-on device and the photovoltaic module is prone to deviation during multiple power-on tests, which leads to power-on failure and greatly reduces the pass rate of the one-time test. In addition, it involves multiple sets of power-on test devices, and the number of power-on probes is large, which makes the maintenance cost high. Utility Model Content

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a post-layer EL power-on device and a post-layer EL test system, which can improve the test pass rate, improve the test efficiency, and reduce maintenance costs.

[0005] A layer-back EL power-on device, comprising:

[0006] A machine having a fixed beam and at least one conveying assembly located below the fixed beam, the conveying assembly being used to carry the photovoltaic module and enable the photovoltaic module to move to a plurality of different testing stations along an extension direction S parallel to the fixed beam; and

[0007] a power-on assembly, the power-on assembly being movably disposed on the fixed crossbeam along the extension direction S, the power-on assembly comprising a lifting mechanism, a first power-on probe, and a second power-on probe, wherein the polarity of the first power-on probe is different from the polarity of the second power-on probe, the lifting mechanism being connected to the first power-on probe and the second power-on probe, respectively, and the lifting mechanism being configured to drive the first power-on probe and the second power-on probe to perform a lifting action, so that the first power-on probe and the second power-on probe are lowered to electrically contact the photovoltaic assembly, or the first power-on probe and the second power-on probe are raised to separate from the photovoltaic assembly;

[0008] When the first power-on probe and the second power-on probe descend and abut against the photovoltaic component, the photovoltaic component, driven by the conveying component, can drive the power-on component to move synchronously to any one of the testing stations.

[0009] In one embodiment, the first power-on probe is an elastic probe, and the second power-on probe is an elastic probe; and / or the first power-on probe is provided with a first abutting block for abutting against the photovoltaic component, and the second power-on probe is provided with a second abutting block for abutting against the photovoltaic component.

[0010] In one embodiment, there are at least two first power-on probes disposed in parallel and spaced apart; and / or, there are at least two second power-on probes disposed in parallel and spaced apart.

[0011] In one embodiment, the power-on component also includes a support rod and a first base body and a second base body respectively connected to the opposite ends of the support rod; the lifting mechanism is connected to the middle part of the support rod, the first power-on probe is installed on the first base body, and the second power-on probe is installed on the second base body.

[0012] In one embodiment, the power-on component further includes a fixed plate, and the lifting mechanism is installed on the fixed plate; a track is provided on the fixed beam, and the machine is further provided with a sliding member slidably provided on the track along the extension direction S; the fixed plate is connected to the sliding member.

[0013] In one embodiment, the sliding member is a sliding plate, which is provided with a plurality of first mounting holes arranged in sequence along the extension direction S; the fixed plate is provided with a plurality of second mounting holes arranged in sequence along the vertical direction; the fixed plate is fixedly connected to the sliding plate by a fastener passing through one of the first mounting holes and one of the second mounting holes.

[0014] In one embodiment, the conveying assembly includes a base plate, a first wheel seat and a second wheel seat fixedly arranged at opposite ends of the base plate, a driving wheel rotatably arranged on the first wheel seat, a driven wheel rotatably arranged on the second wheel seat, and a conveying element connecting the driving wheel and the driven wheel, and the conveying element is used to carry and transport the photovoltaic assembly.

[0015] In one embodiment, there are multiple transmission components, and they are arranged at intervals along a direction perpendicular to the extension direction S and the vertical direction; multiple driving wheels are arranged in alignment along the arrangement direction of the transmission components, and the post-layer EL power-on device also includes a driving shaft coaxially connected to the multiple driving wheels, and the driving shaft is used to be connected to the motor.

[0016] In one embodiment, a plurality of the transmission assemblies and one driving shaft constitute a transmission unit; there are two transmission units, which are arranged below the fixed beam at intervals along the extension direction S.

[0017] A post-layer EL testing system comprises the post-layer EL power-on device.

[0018] In the above-mentioned post-layer EL power-on device and post-layer EL testing system, when performing post-layer EL testing, the lifting mechanism drives the first power-on probe and the second power-on probe to descend until they are in electrical contact with the photovoltaic module, and then the conveying assembly drives the photovoltaic module to move along the extension direction S to multiple different testing stations. Because the first power-on probe and the second power-on probe are both in contact with the photovoltaic module, under the action of friction, when the photovoltaic module moves to each different testing station, they can simultaneously drive the power-on assembly to move along the extension direction S to multiple different testing stations. The same power-on assembly can be used at multiple different testing stations, eliminating the need to configure multiple different power-on assemblies as in the prior art. This reduces the number of power-on probes and, in turn, reduces maintenance costs. In addition, testing at multiple different testing stations only requires a single power-on action, eliminating the need to perform power-on actions separately at different testing stations, thereby improving test efficiency and the test pass rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a three-dimensional structural diagram of a rear-layer EL power-on device according to an embodiment of the present application.

[0020] Figure 2 for Figure 1 Top view of the structure shown.

[0021] Figure 3 for Figure 1 Side view of the structure shown.

[0022] Figure 4 for Figure 1A front view of the structure shown.

[0023] Figure 5 A front view of the structure shown. Figure 1 A front view of the structure shown.

[0024] Figure 6 A front view of the structure shown. Figure 1 A front view of the structure shown.

[0025] 10, machine table; 11, fixed beam; 12, conveying assembly; 121, bottom plate; 122, first wheel seat; 123, second wheel seat; 124, driving wheel; 125, driven wheel; 126, conveying element; 13, sliding member; 131, first mounting hole; 20, power-up assembly; 21, lifting mechanism; 22, first power-up probe; 221, first abutting block; 23, second power-up probe; 231, second abutting block; 24, support rod; 25, first seat body; 26, second seat body; 27, fixed plate; 271, second mounting hole; 28, fastener; 30, photovoltaic assembly; 40, driving shaft. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0027] Referring to Figures 1 to 4 , Figures 1 to 4 Several different perspective views of a layer EL power-up device according to an embodiment of the present application are shown. The layer EL power-up device according to an embodiment of the present application includes a machine table 10 and a power-up assembly 20. The machine table 10 is provided with a fixed beam 11 and at least one conveying assembly 12 located below the fixed beam 11. The conveying assembly 12 is used to carry a photovoltaic assembly 30 and can move the photovoltaic assembly 30 to a plurality of different test stations along an extension direction S parallel to the fixed beam 11. Please refer to Figure 1 And Figure 5 The power-up assembly 20 is movably arranged on the fixed beam 11 along the extension direction S. The power-up assembly 20 includes a lifting mechanism 21, a first power-up probe 22 and a second power-up probe 23. The polarity of the first power-up probe 22 is different from the polarity of the second power-up probe 23. Specifically, when the first power-up probe 22 is positive, the second power-up probe 23 is negative; conversely, when the first power-up probe 22 is negative, the second power-up probe 23 is positive.

[0028] In addition, the lifting mechanism 21 is connected to the first power-on probe 22 and the second power-on probe 23, respectively. The lifting mechanism 21 is used to drive the first power-on probe 22 and the second power-on probe 23 to move up and down, so that the first power-on probe 22 and the second power-on probe 23 are lowered to electrically contact the photovoltaic module 30, or to raise the first power-on probe 22 and the second power-on probe 23 to separate from the photovoltaic module 30. When the first power-on probe 22 and the second power-on probe 23 are lowered to contact the photovoltaic module 30, the photovoltaic module 30, driven by the conveyor assembly 12, can move the power-on module 20 synchronously to any testing station.

[0029] In some embodiments, the fixed beam 11 includes, but is not limited to, being positioned in the middle of the top of the platform 10 or at other locations, and can be flexibly adjusted and positioned based on actual needs. In this embodiment, the fixed beam 11 is positioned in the middle of the top of the platform 10, and the power-on assembly 20 located on the fixed beam 11 corresponds to the middle of the photovoltaic assembly 30. This facilitates the electrical contact between the first power-on probe 22 and the second power-on probe 23 after they descend, thereby performing a power-on test on the photovoltaic assembly 30.

[0030] In the above-mentioned post-layer EL power-on device, when performing post-layer EL testing, the lifting mechanism 21 drives the first power-on probe 22 and the second power-on probe 23 to descend until they are in electrical contact with the photovoltaic module 30, and then the conveying assembly 12 drives the photovoltaic module 30 to move along the extension direction S to multiple different test stations. Because the first power-on probe 22 and the second power-on probe 23 are both in contact with the photovoltaic module 30, under the action of friction, when the photovoltaic module 30 moves to each different test station, they can simultaneously drive the power-on assembly 20 to move along the extension direction S to multiple different test stations. The same power-on assembly 20 can be used at multiple different test stations, eliminating the need to configure multiple different power-on assemblies 20 as in the prior art. This can reduce the number of power-on probes and thus reduce maintenance costs. In addition, testing multiple different test stations only requires a single power-on action, eliminating the need to perform power-on actions separately at different test stations, thereby improving test efficiency and the test pass rate.

[0031] It should be noted that the specific number of test stations can be flexibly adjusted and set according to actual needs, including but not limited to two, three, four, five or any other number. When the conveying component 12 drives the photovoltaic component 30 to move to any test station, the post-layer EL test system can, for example, perform a shooting action on the photovoltaic component 30 located at the test station to obtain image information of the photovoltaic component 30. In this embodiment, there are three test stations, for example, which are located in the middle part of the fixed beam 11 and the two side parts on the left and right sides of the middle part. In this way, after the photovoltaic component 30 moves to different test stations, image information of different parts of the photovoltaic component 30 during the power-on test process can be obtained.

[0032] In some embodiments, the first power-on probe 22 includes, but is not limited to, an elastic probe, and the second power-on probe 23 includes, but is not limited to, an elastic probe. Thus, when the lifting mechanism 21 drives the first power-on probe 22 and the second power-on probe 23 to contact the photovoltaic module 30, the elastic probes can act as a buffer to avoid damage to the photovoltaic module 30. Furthermore, the pressing force between the first power-on probe 22 and the second power-on probe 23 and the photovoltaic module 30 can be increased, thereby increasing friction, allowing the photovoltaic module 30 and the power-on module 20 to be synchronously driven by the conveyor assembly 12 to different test stations.

[0033] See also Figure 1 and Figure 5 In some embodiments, the first power-on probe 22 is provided with a first abutment block 221 for abutting against the photovoltaic module 30, and the second power-on probe 23 is provided with a second abutment block 231 for abutting against the photovoltaic module 30. This ensures that the contact area between the abutment block and the photovoltaic module 30 is greater than the contact area between the probe and the photovoltaic module 30, improving electrical contact performance and thereby increasing the power-on test pass rate, while minimizing damage to the photovoltaic module 30.

[0034] In one embodiment, at least two first power-on probes 22 are provided and spaced in parallel. At least two second power-on probes 23 are provided and spaced in parallel. This increases the electrical contact area with the photovoltaic module 30, thereby improving electrical contact performance and, in turn, the power-on test pass rate.

[0035] In one embodiment, the power-on assembly 20 further includes a support rod 24 and a first base 25 and a second base 26 connected to opposite ends of the support rod 24. A lifting mechanism 21 is connected to the middle portion of the support rod 24. The first power-on probe 22 is mounted on the first base 25, and the second power-on probe 23 is mounted on the second base 26. This arrangement allows the first power-on probe 22 and the second power-on probe 23 to be mounted on the lifting mechanism 21. When the lifting mechanism 21 is activated, the first and second power-on probes 22, 23 are simultaneously driven to rise and fall.

[0036] The lifting mechanism 21 includes but is not limited to a power mechanism such as a cylinder, a motor screw, a hydraulic cylinder, etc., which can be flexibly selected according to actual needs, as long as it can drive the first power-on probe 22 and the second power-on probe 23 to move up and down.

[0037] In one embodiment, the lifting mechanism 21 is connected to the middle portion of the support rod 24, and a first base 25 and a second base 26 are mounted on opposite ends of the support rod 24. The first base 25 is mounted with two first power-on probes 22 spaced apart in parallel, and the second base 26 is mounted with two second power-on probes 23 spaced apart in parallel. The first power-on probes 22 are provided with a first abutment block 221, and the second power-on probes 23 are provided with a second abutment block 231.

[0038] In one embodiment, the power-on assembly 20 further includes a fixed plate 27, and the lifting mechanism 21 is mounted on the fixed plate 27. A track is provided on the fixed beam 11, and the platform 10 further includes a sliding member 13 slidably provided on the track along the extension direction S. The fixed plate 27 is connected to the sliding member 13.

[0039] In some embodiments, the fixing plate 27 is adjustably disposed on the sliding member 13. In this way, the installation position of the fixing plate 27 on the sliding member 13 can be flexibly adjusted according to actual needs.

[0040] In one embodiment, the sliding member 13 is a sliding plate, which is provided with a plurality of first mounting holes 131 arranged in sequence along the extension direction S; the fixed plate 27 is provided with a plurality of second mounting holes 271 arranged in sequence along the vertical direction; the fixed plate 27 is fixedly connected to the sliding plate by a fastener 28 passing through one of the first mounting holes 131 and one of the second mounting holes 271.

[0041] In some embodiments, the fixed plate 27 is provided with at least two rows of second mounting holes 271. Each row of second mounting holes 271 includes a plurality of second mounting holes 271 spaced apart in a vertical direction. There are correspondingly at least two fasteners 28, the same number as the number of rows of second mounting holes 271. The fixed plate 27 is secured to the sliding plate using at least two fasteners 28.

[0042] The fasteners 28 include, but are not limited to, various fastening structures such as screws, bolts, pins, and rivets, which can be flexibly adjusted and configured according to actual needs. The first mounting hole 131 and the second mounting hole 271 are mounting holes that match the fasteners 28.

[0043] Specifically, during the installation of the power-on component 20, the first mounting hole 131 and the second mounting hole 271 can be selected at appropriate positions and the fastener 28 can be used to fix the fixed plate 27 on the sliding plate, so that the horizontal position and vertical position of the fixed plate 27 can be adjusted. In addition, the position of the probe holder on the support rod 24 is adjusted to achieve the purpose of adjusting the position of the power-on probe. The position of the power-on probe can be adjusted as needed to facilitate post-layer EL testing.

[0044] In some embodiments, the conveying component 12 includes but is not limited to various conveying forms such as conveyor belts and conveyor chains, which can be flexibly selected according to actual needs.

[0045] See also Figure 1 and Figure 6 In one embodiment, the conveyor assembly 12 includes a base plate 121, a first wheel seat 122 and a second wheel seat 123 fixedly disposed at opposite ends of the base plate 121, a driving wheel 124 rotatably disposed on the first wheel seat 122, a driven wheel 125 rotatably disposed on the second wheel seat 123, and a conveyor element 126 connecting the driving wheel 124 and the driven wheel 125. The conveyor element 126 is used to carry and transport the photovoltaic modules 30. Thus, when the driving wheel 124 is driven by the motor, the driving wheel 124 drives the driven wheel 125 to rotate, thereby driving the conveyor element 126 to operate. The conveyor element 126 accordingly drives the carried photovoltaic modules 30 to move along the extension direction S to various different testing stations.

[0046] In this embodiment, the transmission element 126 of the transmission assembly 12 is specifically a transmission belt. The driven wheel 125 and the driving wheel 124 are each, for example, a pulley.

[0047] In one embodiment, a plurality of conveyor assemblies 12 are arranged at intervals along a direction perpendicular to the extension direction S and the vertical direction. A plurality of driving pulleys 124 are aligned along the arrangement direction of the conveyor assemblies 12. The post-layer EL power-on device further includes a drive shaft 40 coaxially connected to each of the plurality of driving pulleys 124. The drive shaft 40 is configured to be connected to a motor. Thus, when the motor is operating, it drives the drive shaft 40 to rotate. Since the drive shaft 40 is connected to each of the plurality of driving pulleys 124, it can synchronously drive each of the driving pulleys 124 to rotate. In this way, the conveyor elements 126 of each conveyor assembly 12 can synchronously drive the photovoltaic assembly 30 located thereon to move along the extension direction S. This not only reduces the number of motors, simplifying the structure and reducing costs, but also improves the operational stability of the photovoltaic assembly 30 by arranging a larger number of conveyor assemblies 12 to carry and drive the photovoltaic assembly 30.

[0048] In one embodiment, multiple conveyor assemblies 12 and a drive shaft 40 constitute a conveyor unit. Two conveyor units are arranged below the fixed beam 11 at intervals along the extension direction S. Specifically, the two conveyor units are positioned on opposite sides of the bottom of the platform 10 along the extension direction S. Thus, the two conveyor units work together to drive the photovoltaic modules 30 along the extension direction S to various testing stations.

[0049] See also Figure 1 and Figure 5 In one embodiment, a post-layer EL testing system includes the post-layer EL power-up device of any of the above embodiments.

[0050] In the above-mentioned post-layer EL test system, when performing post-layer EL testing, the lifting mechanism 21 drives the first power-on probe 22 and the second power-on probe 23 to descend until they are in electrical contact with the photovoltaic module 30, and then the conveying assembly 12 drives the photovoltaic module 30 to move along the extension direction S to multiple different test stations. Because the first power-on probe 22 and the second power-on probe 23 are both in contact with the photovoltaic module 30, under the action of friction, when the photovoltaic module 30 moves to each different test station, it can simultaneously drive the power-on assembly 20 to move along the extension direction S to multiple different test stations. The same power-on assembly 20 can be used at multiple different test stations, eliminating the need to configure multiple different power-on assemblies 20 as in the prior art. This can reduce the number of power-on probes and thus reduce maintenance costs. In addition, testing multiple different test stations only requires a single power-on action, eliminating the need to perform power-on actions separately at different test stations, thereby improving test efficiency and the test pass rate.

[0051] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0053] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0054] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A rear EL power-on device, characterized in that: The rear EL power-on device comprises: A machine (10), the machine (10) being provided with a fixed beam (11) and at least one conveying assembly (12) located below the fixed beam (11), the conveying assembly (12) being used to carry a photovoltaic assembly (30) and enabling the photovoltaic assembly (30) to move to a plurality of different test stations along an extension direction S parallel to the fixed beam (11); and A power-on component (20), the power-on component (20) is movably arranged on the fixed crossbeam (11) along the extension direction S, the power-on component (20) comprises a lifting mechanism (21), a first power-on probe (22) and a second power-on probe (23), the polarity of the first power-on probe (22) is different from the polarity of the second power-on probe (23), the lifting mechanism (21) is connected to the first power-on probe (22) and the second power-on probe (23), respectively, and the lifting mechanism (21) is used to drive the first power-on probe (22) and the second power-on probe (23) to perform a lifting action, so that the first power-on probe (22) and the second power-on probe (23) descend to electrically contact the photovoltaic component (30), or the first power-on probe (22) and the second power-on probe (23) ascend to separate from the photovoltaic component (30); When the first power-on probe (22) and the second power-on probe (23) descend and abut against the photovoltaic component (30), the photovoltaic component (30) can drive the power-on component (20) to move synchronously to any one of the test stations under the drive of the conveying component (12).

2. The rear EL power-on device according to claim 1, characterized in that: The first power-on probe (22) is an elastic probe, and the second power-on probe (23) is an elastic probe; and / or the first power-on probe (22) is provided with a first abutting block (221) for abutting against the photovoltaic component (30), and the second power-on probe (23) is provided with a second abutting block (231) for abutting against the photovoltaic component (30).

3. The rear EL power-on device according to claim 1, characterized in that: The number of the first power-on probes (22) is at least two and arranged in parallel and spaced apart; and / or the number of the second power-on probes (23) is at least two and arranged in parallel and spaced apart.

4. The rear EL power-on device according to claim 1, characterized in that: The power-on assembly (20) further includes a support rod (24) and a first base body (25) and a second base body (26) respectively connected to opposite ends of the support rod (24); the lifting mechanism (21) is connected to the middle portion of the support rod (24); the first power-on probe (22) is mounted on the first base body (25); and the second power-on probe (23) is mounted on the second base body (26).

5. The rear EL power-on device according to claim 1, characterized in that: The power-on assembly (20) further includes a fixed plate (27), and the lifting mechanism (21) is mounted on the fixed plate (27); a track is provided on the fixed beam (11), and the machine (10) is further provided with a sliding member (13) slidably arranged on the track along the extension direction S; the fixed plate (27) is connected to the sliding member (13).

6. The rear EL power-on device according to claim 5, characterized in that: The sliding member (13) is a sliding plate, and a plurality of first mounting holes (131) arranged in sequence along an extension direction S are provided on the sliding plate; a plurality of second mounting holes (271) arranged in sequence along a vertical direction are provided on the fixing plate (27); the fixing plate (27) is fixedly connected to the sliding plate by a fastener (28) passing through one of the first mounting holes (131) and one of the second mounting holes (271).

7. The rear EL power-on device according to claim 1, characterized in that: The conveying assembly (12) comprises a base plate (121), a first wheel seat (122) and a second wheel seat (123) fixedly arranged at opposite ends of the base plate (121), a driving wheel (124) rotatably arranged on the first wheel seat (122), a driven wheel (125) rotatably arranged on the second wheel seat (123), and a conveying element (126) connecting the driving wheel (124) and the driven wheel (125), wherein the conveying element (126) is used to carry and transport the photovoltaic assembly (30).

8. The rear EL power-on device according to claim 7, characterized in that: There are multiple transmission components (12), which are arranged at intervals along a direction perpendicular to the extension direction S and the vertical direction; multiple driving wheels (124) are arranged in alignment along the arrangement direction of the transmission components (12); the rear-layer EL power-on device also includes a drive shaft (40) coaxially connected to the multiple driving wheels (124), and the drive shaft (40) is used to be connected to the motor.

9. The rear EL power-on device according to claim 8, characterized in that: A plurality of the transmission assemblies (12) and one driving shaft (40) form a transmission unit; there are two transmission units, which are arranged below the fixed beam (11) at intervals along the extension direction S.

10. A post-layer EL test system, characterized in that: The post-layer EL testing system comprises the post-layer EL power-up device according to any one of claims 1 to 9.

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