Photovoltaic solar cell metallization process sintering furnace

Abstract

The utility model discloses a photovoltaic solar cell metallization process sintering furnace which comprises a piece picking device arranged between the sintering furnace and a light injection box, the piece picking device comprises a piece picking mechanism, a sensing element, a material box and a controller, the piece picking mechanism is arranged above a conveying belt between the sintering furnace and the light injection box, and the sensing element is arranged above the conveying belt. The sensing element is used for sensing the conveying position of a battery piece on the conveying belt and feeding back a signal to the controller, and the piece picking mechanism acts after the controller receives the position signal of the battery piece so as to pick up the battery piece on the conveying belt and put the battery piece into the material box. Due to the fact that the sintering furnace is provided with the pick-up device, the cells can be automatically picked up into the material box after being conveyed, scalding caused by manual pick-up of the cells can be avoided, scratching and damage of the cells can be reduced, and the yield and efficiency of the solar cells are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell production, in particular to a sintering furnace for a photovoltaic solar cell metallization process. Background Art

[0002] Photovoltaic solar cells are devices that convert solar energy into electrical energy. Due to their environmental protection and energy-saving characteristics, they are attracting more and more attention. Photovoltaic solar cell metallization is a key process that can effectively improve the conversion efficiency of photovoltaic cells and ensure their normal operation. The metallization process mainly includes three steps: slurry printing, high-temperature sintering, and light injection; among them, high-temperature sintering refers to the reaction of slurry and silicon at high temperature to form ohmic contact; light injection is to inject laser or fiber beams into the material through the PN junction of semiconductor materials, thereby causing a huge change in the carrier concentration and distribution state of the semiconductor material, and rapidly enhancing the electrical properties of the material.

[0003] During the manufacturing process of photovoltaic solar cells, low efficiency may occur. One possible reason is that the temperature of the sintering furnace is too high or too low, so an efficiency check is needed. During the check, the solar cells that have passed through the sintering furnace need to be manually taken out. However, the surface temperature of the sintered solar cells is too high, which can easily cause burns to workers. The uneven force applied by the hands when taking the solar cells may cause damage to the cells. When placing the solar cells, scratches and other poor appearances may occur, resulting in low efficiency of the cells. Utility Model Content

[0004] The utility model aims to provide a photovoltaic solar cell metallization process sintering furnace to avoid manual selection of solar cells, thereby preventing burns, damage or scratches to the solar cells, and the like when checking the sintering efficiency of solar cells.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a sintering furnace for a photovoltaic solar cell metallization process, comprising a film picking device arranged between the sintering furnace and a light injection box, the film picking device comprising a film picking mechanism, a sensing element, a material box and a controller, the film picking mechanism is arranged above a conveyor belt between the sintering furnace and the light injection box, the sensing element is used to sense the conveying position of the battery cell on the conveyor belt and feed back the signal to the controller, the film picking mechanism is actuated after the controller receives the battery cell position signal to pick up the battery cell on the conveyor belt and put it into the material box.

[0007] In some embodiments, the picking mechanism includes a vacuum suction cup and a translational motion structure, wherein the vacuum suction cup is used to adsorb the battery cells on the conveyor belt, and the translational motion structure is used to drive the vacuum suction cup to perform translational motion along a cross direction in a vertical plane, so as to pick up the battery cells on the conveyor belt and transfer them to the material box.

[0008] In some embodiments, the translational motion structure includes a linear module and a vertical cylinder. The linear module is horizontally arranged on a first support frame along the transverse direction of the conveyor belt, and the vertical cylinder is arranged on a slider of the linear module. The extension and retraction direction of the piston rod of the vertical cylinder is perpendicular to the movement direction of the slider of the linear module, and the vacuum suction cup is connected to the piston rod of the vertical cylinder.

[0009] In some embodiments, the first support frame is fixedly disposed on the base, and the first support frame is disposed across both sides of the conveyor belt.

[0010] In some embodiments, the sensing element is a photoelectric switch sensor.

[0011] In some embodiments, the photoelectric switch sensor is disposed above the conveyor belt via a second support frame.

[0012] In some embodiments, the second support frame is fixedly disposed on the base, and the second support frame is disposed on one side of the conveyor belt.

[0013] In some embodiments, the material box is fixedly disposed on a base, and the material box is disposed on one side of a conveyor belt.

[0014] In some embodiments, two ends of the conveyor belt are respectively connected to the sintering furnace outlet and the light injection box inlet, and the conveyor belt conveys the solar cells from the sintering furnace outlet to the light injection box inlet.

[0015] In some embodiments, the conveyor belt is a metal mesh conveyor belt.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The utility model sets a chip picking device between the sintering furnace and the light injection box. When the sintering furnace needs to be checked, in the process of the battery cell coming out of the sintering furnace and being transferred to the light injection box, the position of the battery cell is sensed by the sensing element and the signal is fed back to the controller, and then the action of the chip picking mechanism is controlled; the chip picking mechanism includes a vacuum suction cup and a translational motion structure. After the vacuum suction cup absorbs the battery cell on the conveyor belt, the translational motion structure drives the vacuum suction cup to perform translational motion along the cross direction in the vertical plane, so as to pick up the battery cell on the conveyor belt and transfer it to the material box; since the sintering furnace has the chip picking device, the battery cell can be automatically picked up and put into the material box after being transferred, which can not only avoid burns caused by manual battery cell picking, but also reduce scratches and damages of the battery cell, thereby improving the yield and efficiency of the solar cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a three-dimensional schematic diagram of a sintering furnace for a photovoltaic solar cell metallization process in the utility model;

[0020] Figure 2 It is a schematic diagram of the top view of the sintering furnace of the photovoltaic solar cell metallization process in the utility model;

[0021] Figure 3 for Figure 2 Schematic diagram of AA direction in;

[0022] Figure 4 for Figure 2 Schematic diagram of BB direction in .

[0023] Marks and corresponding parts names in the attached drawings:

[0024] 1- conveyor belt, 2- bolt, 3- first support frame, 4- light injection box, 5- sensing element, 6- material box, 7- vacuum suction cup, 8- linear module, 9- sintering furnace, 10- base, 11- second support frame, 12- vertical cylinder. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0031] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces), unless otherwise clearly and specifically defined.

[0032] In the description of the embodiments of the present application, the technical 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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] Please refer to Figures 1 to 4 A photovoltaic solar cell metallization process sintering furnace provided in an embodiment of the present application includes a film picking device arranged between the sintering furnace 9 and the light injection box 4, the film picking device includes a film picking mechanism, a sensing element 5, a material box 6 and a controller, the film picking mechanism is arranged above the conveyor belt 1 between the sintering furnace 9 and the light injection box 4, the sensing element 5 is used to sense the conveying position of the battery cell on the conveyor belt 1 and feed back the signal to the controller, the film picking mechanism is actuated after the controller receives the battery cell position signal to pick up the battery cell on the conveyor belt 1 and put it into the material box 6.

[0035] The present application sets a chip picking device between the sintering furnace 9 and the light injection box 4. When the sintering furnace 9 needs to be checked, the position of the battery cell is sensed by the sensing element 5 during the process of the battery cell coming out of the sintering furnace 9 and being transferred to the light injection box 4. When the battery cell is transferred to the position of the sensing element 5, the sensing element 5 feeds back a signal to the controller, which then controls the chip picking mechanism to start moving. When the battery cell moves to the chip picking mechanism, it can be picked up, and the action continues to put the battery cell into the material box 6.

[0036] Since a cell picking device is provided after the exit of the sintering furnace 9 in the present application, the cell can be automatically picked up and put into the material box 6 after being conveyed over, which can not only avoid burns caused by manual cell picking, but also reduce scratches and damages to the cell, thereby improving the yield and efficiency of the solar cell.

[0037] It should be noted that, since the conveyor belt 1 is arranged between the sintering furnace 9 and the light injection box 4, under normal production conditions, the cells will be conveyed to the light injection box 4 after coming out of the sintering furnace 9. When the efficiency of the solar cell is low, it is necessary to check the efficiency. Since the light injection box 4 will also affect the efficiency of the cell, in order to determine whether it is caused by the excessively high / low temperature of the sintering furnace 9, it is necessary to take out the cell after the exit of the sintering furnace 9 to eliminate the influence of the light injection box 4.

[0038] According to some embodiments of the present application, the picking mechanism includes a vacuum suction cup 7 and a translational motion structure, the vacuum suction cup 7 is used to adsorb the battery cells on the conveyor belt 1, and the translational motion structure is used to drive the vacuum suction cup 7 to perform translational motion along a cross direction in a vertical plane, so as to pick up the battery cells on the conveyor belt 1 and transfer them to the material box 6.

[0039] The picking mechanism includes a vacuum suction cup 7 and a translational motion structure. After the vacuum suction cup 7 absorbs the battery cell on the conveyor belt 1, the translational motion structure drives the vacuum suction cup 7 to perform translational motion along the cross direction in the vertical plane, thereby picking up the battery cell on the conveyor belt 1 and transferring it to the material box 6 on one side of the conveyor belt 1.

[0040] It should be noted that there are multiple suction heads evenly distributed on the vacuum suction cup 7, and the multiple suction heads are connected to the vacuum equipment. When in use, the vacuum suction cup 7 is driven to move downward by the translational motion structure so that the suction heads contact the battery cells. At the same time, a vacuum is formed through the vacuum equipment to suck the battery cells, and then the translational motion structure continues to move to place the battery cells into the material box 6.

[0041] According to some embodiments of the present application, the translational motion structure includes a linear module 8 and a vertical cylinder 12. The linear module 8 is horizontally arranged on the first support frame 3 along the conveyor belt 1. The vertical cylinder 12 is arranged on the slider of the linear module 8. The extension and retraction direction of the piston rod of the vertical cylinder 12 is perpendicular to the movement direction of the slider of the linear module 8. The vacuum suction cup 7 is connected to the piston rod of the vertical cylinder 12.

[0042] When in use, the piston rod of the vertical cylinder 12 drives the vacuum suction cup 7 to move up and down to achieve the suction, lifting and lowering of the battery cell; the slider of the linear module 8 drives the vertical cylinder 12 to move horizontally along the width direction of the conveyor belt 1 to achieve the transverse movement of the battery cell from above the conveyor belt 1 to above the material box 6.

[0043] According to some embodiments of the present application, the first support frame 3 is fixedly connected to the base 10 by bolts 2, and the first support frame 3 is arranged across both sides of the conveyor belt 1. Specifically, the first support frame 3 can be a door-type frame, which is arranged across both sides of the conveyor belt 1; the linear module 8 is fixedly installed on the horizontal beam of the first support frame 3.

[0044] According to some embodiments of the present application, the sensing element 5 is a photoelectric switch sensor. When the battery sheet on the conveyor belt 1 comes over, the photoelectric switch sensor will send a signal to the controller to control the sheet picking mechanism to start the action.

[0045] It should be noted that the conveying speed of the conveyor belt 1 can be constant. During the process of the sensing element 5 sensing the battery cell, the battery cell is continuously conveyed forward. According to the conveying speed and the position of the sensing element, when the battery cell arrives under the vacuum suction cup 7 after a certain period of time, the battery cell can stay for a while to allow the vacuum suction cup 7 to absorb the battery cell.

[0046] According to some embodiments of the present application, the photoelectric switch sensor is disposed above the conveyor belt 1 through the second support frame 11. Of course, other feasible sensors can also be used as long as they can sense the passage of the battery sheet.

[0047] According to some embodiments of the present application, the second support frame 11 is fixedly disposed on the base 10, and the second support frame 11 is disposed on one side of the conveyor belt 1. Specifically, the second support frame 11 is a 90° bent structure, one end of the second support frame 11 is fixedly disposed on the base 10 by bolts, and of course, it can also be welded to the base 10, and the sensing element 5 is installed on the other end of the second support frame 11.

[0048] According to some embodiments of the present application, the material box 6 can be fixed on the base 10 by bolts, and the material box 6 is arranged on one side of the conveyor belt 1.

[0049] According to some embodiments of the present application, the two ends of the conveyor belt 1 are respectively connected to the exit of the sintering furnace 9 and the entrance of the light injection box 4, and the conveyor belt 1 conveys the battery cells from the exit of the sintering furnace 9 to the entrance of the light injection box 4. Specifically, active rollers and driven rollers are provided at both ends of the conveyor belt 1, and the active rollers are driven to rotate by a motor, thereby moving the conveyor belt.

[0050] According to some embodiments of the present application, the conveyor belt 1 is a metal mesh conveyor belt. The conveyor belt 1 can be a Teflon mesh belt, which is specifically woven from metal wires and coated with three layers of Teflon resin.

[0051] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A photovoltaic solar cell metallization process sintering furnace, characterized in that: It includes a wafer picking device arranged between the sintering furnace and the light injection box, the wafer picking device includes a wafer picking mechanism, a sensing element, a material box and a controller, the wafer picking mechanism is arranged above the conveyor belt between the sintering furnace and the light injection box, the sensing element is used to sense the conveying position of the battery cell on the conveyor belt and feed back the signal to the controller, and the wafer picking mechanism is activated after the controller receives the battery cell position signal to pick up the battery cell on the conveyor belt and put it into the material box.

2. The photovoltaic solar cell metallization process sintering furnace according to claim 1, characterized in that: The picking mechanism includes a vacuum suction cup and a translational motion structure, wherein the vacuum suction cup is used to absorb the battery cells on the conveyor belt, and the translational motion structure is used to drive the vacuum suction cup to perform translational motion along a cross direction in a vertical plane to pick up the battery cells on the conveyor belt and transfer them to the material box.

3. The photovoltaic solar cell metallization process sintering furnace according to claim 2, characterized in that: The translational motion structure includes a linear module and a vertical cylinder. The linear module is horizontally arranged on a first support frame along the transverse direction of the conveyor belt. The vertical cylinder is arranged on a slider of the linear module. The extension and retraction direction of the piston rod of the vertical cylinder is perpendicular to the movement direction of the slider of the linear module. The vacuum suction cup is connected to the piston rod of the vertical cylinder.

4. The photovoltaic solar cell metallization process sintering furnace according to claim 3, characterized in that: The first support frame is fixedly arranged on the base, and the first support frame is arranged across both sides of the conveyor belt.

5. The photovoltaic solar cell metallization process sintering furnace according to any one of claims 1 to 4, characterized in that: The sensing element is a photoelectric switch sensor.

6. The photovoltaic solar cell metallization process sintering furnace according to claim 5, characterized in that: The photoelectric switch sensor is arranged above the conveyor belt through a second supporting frame.

7. The photovoltaic solar cell metallization process sintering furnace according to claim 6, characterized in that: The second support frame is fixedly arranged on the base, and the second support frame is arranged on one side of the conveyor belt.

8. The photovoltaic solar cell metallization process sintering furnace according to any one of claims 1 to 4, characterized in that: The material box is fixedly arranged on the base, and the material box is arranged on one side of the conveyor belt.

9. The photovoltaic solar cell metallization process sintering furnace according to any one of claims 1 to 4, characterized in that: The two ends of the conveyor belt are respectively connected to the sintering furnace outlet and the light injection box inlet, and the conveyor belt conveys the battery sheet from the sintering furnace outlet to the light injection box inlet.

10. The photovoltaic solar cell metallization process sintering furnace according to claim 9, characterized in that: The conveyor belt is a metal mesh conveyor belt.

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