An EL testing device for photovoltaic cells

Abstract

The application discloses a photovoltaic cell EL testing device, which comprises a base plate, a cell bearing group arranged on the upper surface of the base plate and used for bearing photovoltaic cells, a vertical module mechanism vertically fixed on the upper surface of one side of the base plate, wherein a pressing mechanism is arranged on the vertical module mechanism and can move downward to press the upper surface of the photovoltaic cell, a cell positioning cylinder group used for positioning the horizontal position of the photovoltaic cell, and a cylinder upper power supply group used for automatically powering the photovoltaic cell. The application has the advantages of simple and convenient operation, high safety, good testing performance and solution to the testing problem of the photovoltaic cell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery EL testing, and particularly relates to a photovoltaic battery EL testing device. BACKGROUND

[0002] In recent years, with the rapid development of the photovoltaic industry, the testing means in the quality control link of the photovoltaic module is continuously enhanced, and the original appearance and electrical performance testing cannot meet the industry demand. At present, a method for testing potential defects of crystalline silicon solar cells is widely used in the industry, that is, el testing, which is abbreviated as (electroluminescence) in English, and is translated as electroluminescence or field luminescence.

[0003] At present, the el testing technology has been applied by many crystalline silicon solar cell and module manufacturers for 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: directly powering the busbar of the battery piece, powering the busbar at both ends of the battery piece, powering the front busbar of the module, and powering the external hanging power supply device after the layer. Among them, the method of powering the external hanging power supply device after the layer is different for different production plant devices, and manual external hanging on the module is required, which is a waste of manpower and resources. SUMMARY

[0004] Therefore, it is necessary to provide a photovoltaic battery EL testing device for the above technical problems.

[0005] A photovoltaic battery EL testing device, comprising:

[0006] a total bottom plate;

[0007] a battery piece bearing group arranged on the upper surface of the total bottom plate, the battery piece bearing group being used for bearing a photovoltaic battery piece;

[0008] a vertical module mechanism vertically fixed on the upper surface of one side of the total bottom plate, the vertical module mechanism being provided with a pressing mechanism, and the pressing mechanism being capable of moving downward to press the upper surface of the photovoltaic battery piece;

[0009] a battery piece positioning cylinder group used for positioning the horizontal position of the photovoltaic battery piece;

[0010] a cylinder power-on group used for automatically powering the photovoltaic battery piece.

[0011] In one embodiment, the battery piece bearing group comprises:

[0012] a glass bearing plate, the inside of the glass bearing plate being fixed with a lower bearing glass, and the adjacent side edges of the glass bearing plate being provided with a positioning reference surface;

[0013] Positioning guide shafts are arranged on the bottom of the glass carrying plate, and the positioning guide shafts are arranged on the general bottom plate;

[0014] The mounting limiting units are arranged on two adjacent sides of the glass carrying plate away from the positioning reference surface, and the battery piece positioning cylinder group is arranged in the mounting limiting unit.

[0015] In one embodiment, the mounting limiting unit includes two C-shaped limiting blocks symmetrically arranged on the side of the glass carrying plate, and a gap is formed between the two C-shaped limiting blocks.

[0016] In one embodiment, the vertical module mechanism includes:

[0017] A fixed plate is vertically fixed on the upper surface of one side of the general bottom plate, and a vertical groove is arranged in the middle of the fixed plate.

[0018] The driving unit includes a driving motor, a lead screw, and a nut connecting block. The lead screw is vertically arranged on the fixed plate, the driving motor is used to drive the rotation of the lead screw, and the nut connecting block is threadedly arranged on the lead screw and arranged in the vertical groove.

[0019] The guide rails are symmetrically arranged on the left and right sides of the fixed plate, and the guide rails are matched with the pressing mechanism.

[0020] The limiting photoelectric is arranged above and below one side of the fixed plate.

[0021] In one embodiment, the bottom of the guide rail is provided with a limiting block, the limiting block is fixedly connected with the fixed plate, and the two sides of the limiting block are provided with a circular truncated cone type limiting protrusion.

[0022] In one embodiment, the pressing mechanism includes:

[0023] The pressing general panel is provided with a cylinder upper electrical group.

[0024] The sliding block connecting plate is vertically arranged on one side of the pressing general panel, and the top middle position of the sliding block connecting plate is connected with the nut connecting block.

[0025] The sliding blocks are symmetrically arranged on the left and right side walls of the sliding block connecting plate, and the sliding blocks are matched with the guide rails.

[0026] The optical glass fixed plate is arranged around the bottom of the pressing general panel, and the optical glass fixed plate is fixedly provided with an upper optical glass.

[0027] In one of the embodiments, a reinforcing plate is arranged between the total pressing panel and the slider connecting plate, and the reinforcing plate is in triangular shape.

[0028] In one of the embodiments, the battery piece positioning cylinder group comprises:

[0029] A vertical positioning cylinder is fixed on the positioning cylinder fixing plate, and the vertical positioning cylinder is connected with the cylinder connecting plate;

[0030] A horizontal positioning cylinder is fixed on the cylinder connecting plate, and a positioning fixing plate is arranged on the horizontal positioning cylinder, and a battery piece positioning member is arranged on the positioning fixing plate, and the battery piece positioning member is in contact with the side edge of the photovoltaic battery piece.

[0031] In one of the embodiments, the cylinder power-on group comprises:

[0032] A cylinder fixing plate is fixed with an upper power-on cylinder and a bearing guide unit, and the bearing guide unit is symmetrically arranged on both sides of the upper power-on cylinder, and the piston rod of the upper power-on cylinder is connected with a conductive cotton substrate fixing plate;

[0033] A sliding guide shaft is fixed on the conductive cotton substrate fixing plate, and the sliding guide shaft is matched with the bearing guide unit;

[0034] A conductive cotton substrate is fixed on the conductive cotton substrate fixing plate, and a conductive cotton is fixed on the conductive cotton substrate, and the conductive cotton can power on the photovoltaic battery piece.

[0035] In one of the embodiments, a drag chain is arranged on the total bottom plate, and the drag chain is connected with the pressing mechanism through a drag chain connecting member.

[0036] The above-mentioned photovoltaic battery piece EL testing device is used for placing the photovoltaic battery piece to be tested on the battery piece bearing group, then positioning the photovoltaic battery piece by using the battery piece positioning cylinder group, starting the test switch, under the control of the set program, the battery piece positioning cylinder group is retracted to the lower side of the total bottom plate, at the same time, under the control of the vertical module mechanism, the pressing mechanism is moved downward, when reaching a certain position (i.e. the photovoltaic battery piece is pressed and adhered), the cylinder power-on group is started to power on the photovoltaic battery piece, and finally the EL power-on test is started. The present application has the advantages of simple operation, high safety, good testing performance, and solves the testing problem of the photovoltaic battery piece. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0038] Figure 1 is a structural schematic diagram of the EL testing device for the photovoltaic cell piece of the present application;

[0039] Figure 2 is a structural schematic diagram of the cell piece bearing group of the present application;

[0040] Figure 3 is a back side structural schematic diagram of the cell piece bearing group of the present application;

[0041] Figure 4 is a front view of the vertical module mechanism of the present application;

[0042] Figure 5 is a left view of the vertical module mechanism of the present application;

[0043] Figure 6 is a structural schematic diagram of the pressing mechanism of the present application;

[0044] Figure 7 is a structural schematic diagram of the cell piece positioning cylinder group of the present application;

[0045] Figure 8 is a structural schematic diagram of the cylinder upper electricity group of the present application. DETAILED DESCRIPTION

[0046] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0047] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0049] Referring to Figures 1-8 An embodiment of the present application provides a photovoltaic cell EL testing device, which comprises:

[0050] a general base plate 1;

[0051] a cell carrying group 5 arranged on the upper surface of the general base plate 1, the cell carrying group 5 being used for carrying photovoltaic cells 4;

[0052] a cell positioning cylinder group 6 used for positioning the photovoltaic cells 4;

[0053] a vertical mold mechanism 2 vertically fixed on the upper surface of one side of the general base plate 1, the vertical mold mechanism 2 being provided with a pressing mechanism 3, the pressing mechanism 3 being capable of moving downward and pressing on the upper surface of the photovoltaic cells 4;

[0054] a cylinder power-on group 7 arranged on the general base plate 1 and the pressing mechanism 3, the cylinder power-on group 7 being used for powering on the photovoltaic cells 4.

[0055] The photovoltaic cell EL testing device is used for placing the photovoltaic cells 4 to be tested on the cell carrying group 5, then starting a testing switch after the photovoltaic cells 4 are positioned by the cell positioning cylinder group 6, under the control of a set program, the cell positioning cylinder group 6 is retracted to the lower part of the general base plate 1, at the same time, the vertical mold mechanism 2 controls the pressing mechanism 3 to move downward, when reaching a certain position (i.e. the photovoltaic cells 4 are pressed and adhered from top and bottom), the cylinder power-on group 7 is started to power on the photovoltaic cells 4, and finally the EL power-on testing is started. The present application has the advantages of simple operation, high safety and good testing performance, and solves the testing problem of the photovoltaic cells.

[0056] In an embodiment of the present application, the cell carrying group 5 comprises:

[0057] a glass carrying plate 51, the inside of the glass carrying plate 51 being fixed with a lower carrying glass 52, the adjacent side edges of the glass carrying plate 51 being provided with positioning reference surfaces 53;

[0058] a positioning guide shaft 54 arranged at the bottom of the glass carrying plate 51, the positioning guide shaft 54 being arranged on the general base plate 1;

[0059] a mounting limiting unit 55 arranged on the glass carrying plate 51 away from the two adjacent side edges of the positioning reference surfaces 53, the cell positioning cylinder group 6 being arranged in the mounting limiting unit 55.

[0060] In the embodiment, when the photovoltaic cell 4 is placed on the lower bearing glass 52, the cell positioning cylinder group 6 can push the photovoltaic cell 4 to move in the horizontal plane, and under the limiting action of the positioning reference surface 53, the photovoltaic cell 4 is quickly positioned.

[0061] In an embodiment of the present application, the installation limiting unit 55 comprises two C-shaped limiting blocks 551 symmetrically arranged on the side of the glass bearing plate 51, and a gap 552 is arranged between the two C-shaped limiting blocks 551. In this way, the cell positioning cylinder group 6 can be clamped between the two C-shaped limiting blocks 551 through the gap 552, which not only improves the installation efficiency of the cell positioning cylinder group 6, but also limits the movement position of the cell positioning cylinder group 6 itself, improving the safety of use.

[0062] In an embodiment of the present application, the vertical mold group mechanism 2 comprises:

[0063] A fixed plate 21 is vertically fixed on the upper surface of one side of the total base plate 1, and a vertical groove 22 is arranged in the middle of the fixed plate 21;

[0064] A driving unit comprises a driving motor 23, a lead screw 24 and a nut connecting block 25, the lead screw 24 is vertically arranged on the fixed plate 21, the driving motor 23 is used to drive the lead screw 24 to rotate, and the nut connecting block 25 is threadedly sleeved on the lead screw 24, and the nut connecting block 25 is arranged in the vertical groove 22;

[0065] A guide rail 26 is symmetrically arranged on the left and right sides of the fixed plate 21, and the guide rail 26 cooperates with the pressing mechanism 3;

[0066] A limiting photoelectricity 27 is arranged above and below one side of the fixed plate 21.

[0067] In the embodiment, the driving motor 23 can drive the lead screw 24 to rotate, so as to drive the nut connecting block 25 to move up and down in the vertical direction, so as to drive the pressing mechanism 3 to move up and down. The guide rail 26 plays a guiding role to improve the stability of the pressing mechanism 3 during movement. The limiting photoelectricity 27 can detect and limit the lowermost position and the uppermost position of the movement of the pressing mechanism 3, improving the safety of use.

[0068] In an embodiment of the present application, the bottom of the guide rail 26 is provided with a limiting block 28, the limiting block 28 is fixedly connected with the fixed plate 21, and the two sides of the limiting block 28 are provided with a circular truncated cone type limiting protrusion 29. In this way, the limiting protrusion 29 can play a mechanical limiting role to avoid damaging the photovoltaic cell 4 by the pressing mechanism 3.

[0069] In an embodiment of the present application, the pressing mechanism 3 comprises:

[0070] A pressing panel 31 is provided with a cylinder power supply 7;

[0071] A slide connecting plate 32 is vertically arranged on one side of the pressing panel 31, and the top middle part of the slide connecting plate 32 is connected with the screw nut connecting block 25;

[0072] A slide 33 is symmetrically arranged on the left and right sidewalls of the slide connecting plate 32, and the slide 33 is matched with the guide rail 26, so that the pressing mechanism 3 can move up and down along the guide rail 26 stably.

[0073] An optical glass fixing plate 34 is arranged around the bottom of the pressing panel 31, and an upper optical glass 35 is fixed on the optical glass fixing plate 34.

[0074] In the embodiment, when the pressing mechanism 3 moves downward, the upper optical glass 35 can be pressed on the upper surface of the photovoltaic cell 4, and at this time, the cylinder power supply 7 on the pressing panel 31 and the cylinder power supply 7 on the bottom panel 1 can supply power to the photovoltaic cell 4.

[0075] In an embodiment of the present application, a reinforcing plate 36 is arranged between the pressing panel 31 and the slide connecting plate 32, so that the connecting strength between the pressing panel 31 and the slide connecting plate 32 can be increased. The reinforcing plate 36 is in the shape of a triangle or the like.

[0076] In an embodiment of the present application, the cell positioning cylinder group 6 comprises:

[0077] A vertical positioning cylinder 61 is fixed on a positioning cylinder fixing plate 62, and the vertical positioning cylinder 61 is connected with a cylinder connecting plate 63;

[0078] A horizontal positioning cylinder 64 is fixed on the cylinder connecting plate 63, and a positioning fixing plate 65 is arranged on the horizontal positioning cylinder 64, and a cell positioning piece 66 is arranged on the positioning fixing plate 65, and the cell positioning piece 66 is in contact with the side edge of the photovoltaic cell 4.

[0079] In the embodiment, the vertical positioning cylinder 61 can drive the horizontal positioning cylinder 64 and the cell positioning piece 66 to move up and down, so that interference can be avoided after the pressing mechanism 7 moves downward, and the horizontal positioning cylinder 64 is used to drive the cell positioning piece 66 to be in contact with the side edge of the photovoltaic cell 4, so as to position the photovoltaic cell 4.

[0080] In an embodiment of the present application, the cylinder power supply 7 comprises:

[0081] A cylinder fixing plate 71 is provided with an upper electric cylinder 72 and bearing guide units 73 symmetrically arranged on both sides of the upper electric cylinder 72, and a piston rod of the upper electric cylinder 72 is connected with a conductive cotton substrate fixing plate 74;

[0082] A sliding guide shaft 75 is fixed on the conductive cotton substrate fixing plate 74 and cooperates with the bearing guide units 73.

[0083] A conductive cotton substrate 76 is fixed on the conductive cotton substrate fixing plate 74, and a conductive cotton 77 is fixed on the conductive cotton substrate 76, and the conductive cotton 77 can electrify the photovoltaic cell 4.

[0084] In the embodiment, the bearing guide unit 73 can include a bearing seat and a sliding bearing, the sliding bearing is installed in the bearing seat, and the sliding guide shaft 75 is slidably arranged in the sliding bearing, so as to guide the conductive cotton substrate 76 and the conductive cotton 77 to move up and down.

[0085] In an embodiment of the application, the total base plate 1 is provided with a drag chain 8, and the drag chain 8 is connected with the pressing mechanism 3 through a drag chain connecting piece 9. In this way, the cable arrangement of the pressing mechanism 3 can be facilitated, and the safety in use can be improved.

[0086] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0087] The above-mentioned embodiments only express several embodiments of the application, but cannot be understood as the limitation of the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are within the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A photovoltaic cell EL testing device, characterized in that, Comprise: The total floor; The battery piece bearing group is arranged on the upper surface of the total floor, and the battery piece bearing group is used for bearing photovoltaic battery piece; The vertical module mechanism is vertically fixed on the upper surface of one side of the total floor, and the vertical module mechanism is provided with a pressing mechanism, and the pressing mechanism can move downward to press the upper surface of the photovoltaic battery piece; The battery piece positioning cylinder group is used for positioning the horizontal position of the photovoltaic battery piece; The cylinder upper electricity group is used for automatically electrifying the photovoltaic battery piece; The battery piece bearing group comprises: The glass bearing plate is fixed with the lower bearing glass in the inside, and the adjacent side of the glass bearing plate has a positioning reference surface; The positioning guide shaft is arranged at the bottom of the glass bearing plate, and the positioning guide shaft is arranged in the total floor; The installation limiting unit is arranged on the two adjacent side edges of the glass bearing plate away from the positioning reference surface, and the battery piece positioning cylinder group is arranged in the installation limiting unit; The installation limiting unit comprises two C-shaped limiting blocks symmetrically arranged on the side of the glass bearing plate, and a gap is formed between the two C-shaped limiting blocks; The cylinder upper electricity group comprises: The cylinder fixed plate is fixed with the upper electricity cylinder and the bearing guide unit, the bearing guide unit is symmetrically arranged on both sides of the upper electricity cylinder, and the piston rod of the upper electricity cylinder is connected with the conductive cotton base plate; The sliding guide shaft is fixed on the conductive cotton base plate, and the sliding guide shaft is matched with the bearing guide unit; The conductive cotton base plate is fixed on the conductive cotton base plate, and the conductive cotton is arranged on the conductive cotton base plate, and the conductive cotton can be used for electrifying the photovoltaic battery piece.

2. The EL testing apparatus for photovoltaic cells as claimed in claim 1, wherein, The vertical module mechanism comprises: The fixed plate is vertically fixed on the upper surface of one side of the total floor, and the fixed plate is provided with a vertical slot penetrating the middle part; The driving unit comprises a driving motor, a lead screw and a nut connecting block, the lead screw is vertically arranged on the fixed plate, the driving motor is used for driving the lead screw to rotate, the nut connecting block is threadedly sleeved on the lead screw, and the nut connecting block is arranged in the vertical slot; The guide rail is symmetrically arranged on the left and right sides of the fixed plate, and the guide rail is matched with the pressing mechanism; The limiting photoelectricity is arranged above and below one side of the fixed plate.

3. The EL testing apparatus for photovoltaic cells as claimed in claim 2, wherein, The bottom of the guide rail is provided with a limiting block, the limiting block is fixedly connected with the fixed plate, and the two sides of the limiting block are provided with a circular truncated cone type limiting protrusion.

4. The EL testing apparatus for photovoltaic cells as claimed in claim 3, wherein, The pressing mechanism comprises: The lower pressing total panel is provided with a cylinder upper electricity group; The slider connecting plate is vertically arranged on one side of the lower pressing total panel, and the top middle position of the slider connecting plate is connected with the nut connecting block; The slider is symmetrically arranged on the left and right side walls of the slider connecting plate, and the slider is matched with the guide rail; The optical glass fixed plate is arranged around the bottom of the lower pressing total panel, and the optical glass fixed plate is fixed with the upper optical glass.

5. The EL testing apparatus for photovoltaic cells as claimed in claim 4, wherein, The lower pressing total panel and the slider connecting plate are further provided with a reinforcing plate, and the reinforcing plate is triangular.

6. The EL testing apparatus for photovoltaic cells as claimed in claim 5, wherein, The battery piece positioning cylinder group comprises: Vertical positioning cylinder fixed on the positioning cylinder fixing plate, and connected with the cylinder connecting plate; Transverse positioning cylinder fixed on the cylinder connecting plate, and provided with a positioning fixing plate, and the positioning fixing plate is provided with a battery piece positioning member, and the battery piece positioning member is in contact with the side edge of the photovoltaic battery piece.

7. The EL testing apparatus for photovoltaic cells as claimed in claim 1, wherein, The total bottom plate is provided with a drag chain, and the drag chain is connected with the pressing mechanism through a drag chain connecting piece.

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