Photovoltaic module repair equipment

Abstract

The embodiments of the present disclosure relate to the photovoltaic field and provide a photovoltaic module repair device. The photovoltaic module includes a plurality of cells. The photovoltaic module repair device includes: an abnormality detection and positioning device for detecting the photovoltaic module and identifying abnormal cells in an abnormal cell string; a repair support platform for supporting the abnormal cell string; a gripping mechanism for adsorbing the coating on the surface of the abnormal cell adjacent to the first boundary; a movement control mechanism connected to the gripping mechanism for controlling the gripping mechanism to move in the vertical direction. After the gripping mechanism adsorbs the coating, the gripping mechanism is controlled to move upward in the vertical direction to a preset height to apply tension to the coating. After the gripping mechanism moves to the preset height, the gripping mechanism is controlled to move along the first boundary toward the second boundary of the abnormal cell, so that the gripping mechanism drives the coating to be peeled off from the abnormal cell. The photovoltaic module repair device provided by the embodiments of the present disclosure can facilitate the repair of photovoltaic modules.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the photovoltaic field, and in particular to a photovoltaic module repair device. Background Art

[0002] In a film-coated battery string, one or both sides of the battery cell are connected with welding ribbons and adhesive films. Two adjacent battery cells are connected using a set of welding ribbons. The adhesive film is heated and bonded to the battery cell to fix the welding ribbons to the battery cell.

[0003] As film costs decrease and busbar-less technology matures, film-coated battery strings are gaining increasing market acceptance. Currently, the yield rate of film-coated battery strings produced by battery string production equipment does not reach 100%. Some film-coated battery strings produced contain defective cells, requiring repair before continued use. Summary of the Invention

[0004] The embodiments of the present disclosure provide a photovoltaic module repair device, which can at least facilitate the repair of photovoltaic modules.

[0005] According to some embodiments of the present disclosure, on the one hand, an embodiment of the present disclosure provides a photovoltaic module repair device, wherein the photovoltaic module includes a plurality of battery strings, the battery string includes a plurality of connected battery cells, adjacent battery cells are connected via welding ribbons, and a coating is provided on the surface of the battery cell, and the coating is used to fix the welding ribbon on the surface of the battery cell, including: an abnormality detection and positioning device, the abnormality detection and positioning device is used to detect the photovoltaic module, select the abnormal battery string in the photovoltaic module, and confirm the abnormal battery cell in the abnormal battery string; a repair carrier, the repair carrier is used to carry the abnormal battery string; a gripping mechanism, at least used to adsorb the surface of the abnormal battery cell an area of ​​the coating adjacent to the first boundary; a moving control mechanism, the moving control mechanism being connected to the gripping mechanism and being used to control the gripping mechanism to move in a vertical direction, wherein after the gripping mechanism adsorbs the coating, the moving control mechanism controls the gripping mechanism to move upward in the vertical direction to a preset height to apply a pulling force to the coating, and after the gripping mechanism moves to the preset height, the moving control mechanism is further used to control the gripping mechanism to move along the first boundary toward the second boundary of the abnormal battery cell, so that the gripping mechanism drives the coating to be peeled off from the abnormal battery cell, and the second boundary is opposite to the first boundary.

[0006] In some embodiments, the gripping mechanism includes: at least one suction cup, which is used to adsorb the film, wherein there is a pressure difference between the cavity of the suction cup facing the film and the outside; a heating device, which is located on the side of the suction cup facing the second boundary and is used to heat the film.

[0007] In some embodiments, the number of the suction cups is greater than or equal to 2, and along the arrangement direction of the plurality of suction cups, the distance between adjacent suction cups located in the middle is greater than or equal to the distance between adjacent suction cups located at the edge.

[0008] In some embodiments, the movement control mechanism is further used to control the grasping mechanism to move downward in the vertical direction after the grasping mechanism absorbs the coating, so as to squeeze the gas in the cavity.

[0009] In some embodiments, the gripping mechanism further includes: an exhaust pipe, one end of which is connected to the cavity; and an exhaust pump, which is connected to the other end of the exhaust pipe, and is used to exhaust the cavity while the film is peeled off from the abnormal battery cell.

[0010] In some embodiments, the gripping mechanism further includes: a heating element, which is fixed to the outer side of the suction cup and is used to heat the suction cup.

[0011] In some embodiments, it also includes: a blowing mechanism, which is located on the side of the gripping mechanism facing the first boundary, and the blowing port of the blowing mechanism is directed toward the junction where the film is peeled off from the abnormal battery cell, and is used to blow the film during the process of removing the film.

[0012] In some embodiments, the angle between the blowing direction of the blowing port and the normal direction of the surface of the abnormal battery cell is 30° to 60°.

[0013] In some embodiments, it also includes: a film pasting mechanism, which is used to re-paste the film on the surface of the abnormal battery cell after removing the film on the surface of the abnormal battery cell; a heating block, which is opposite to the rework carrier and is used to press and heat the re-applied film.

[0014] In some embodiments, the gripping mechanism further includes: a clamping member connected to the movement control mechanism, and the movement control mechanism controls the clamping member to clamp and fix the boundary position of the film during the peeling of the film from the abnormal battery cell.

[0015] The technical solution provided by the embodiments of the present disclosure has at least the following advantages: the photovoltaic module is tested by an abnormal detection and positioning device, the abnormal battery string in the photovoltaic module is selected, and the abnormal battery cell in the abnormal battery string is located, and then the film on the surface of the abnormal battery cell is first adsorbed by the grasping mechanism and the mobile control mechanism, and then the external force is provided by the mobile control mechanism to peel off the film from the battery cell, so that the battery cell can be reused and the number and scrap rate of scrapped battery cells can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Unless otherwise stated, the pictures in the drawings do not constitute a scale limitation. In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the traditional technology, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of an abnormal battery cell provided by an embodiment of the present disclosure;

[0018] Figure 2 A schematic diagram of the structure of a photovoltaic module repair device and a solar cell provided in an embodiment of the present disclosure;

[0019] Figure 3 A schematic structural diagram of a photovoltaic module repair device provided by the present disclosure;

[0020] Figure 4 A schematic structural diagram of another photovoltaic module repair device provided in one embodiment of the present disclosure;

[0021] Figure 5 A schematic structural diagram of a gripping mechanism provided in one embodiment of the present disclosure;

[0022] Figure 6 A schematic structural diagram of a film-laminating and pasting mechanism provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] As can be seen from the background technology, low-temperature welding of photovoltaic modules is a process that uses a film to fix the welding ribbon on the surface of the battery to replace conventional high-temperature welding. It solves problems such as warping and micro-cracks on the battery surface, and is of great significance to reducing costs and improving efficiency of photovoltaic modules.

[0024] However, during the low-temperature welding process, defective battery strings are inevitably produced. Currently, there is no better way to deal with defective strings in the industry, which results in a lot of waste and increased costs.

[0025] The disclosed embodiment provides a photovoltaic module repair device, which tests the photovoltaic module through an abnormal detection and positioning device, selects abnormal battery strings in the photovoltaic module, and locates abnormal battery cells in the abnormal battery strings. Then, the film on the surface of the abnormal battery cell is first adsorbed by the cooperation of a gripping mechanism and a mobile control mechanism, and then the mobile control mechanism provides external force to peel the film from the battery cell. In this way, the battery cell can be reused, reducing the number and scrap rate of scrapped battery cells.

[0026] In the description of the embodiments of the present disclosure, technical terms such as "first" and "second" are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0027] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In the description of the embodiments of the present disclosure, the term "and / or" is merely a description of an association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can represent the following three situations: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0029] In the description of the embodiments of the present disclosure, 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).

[0030] In the description of the embodiments of the present disclosure, 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., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present disclosure.

[0031] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0032] In the accompanying drawings corresponding to the embodiments of the present disclosure, the thickness and area of ​​the layers are exaggerated for better understanding and ease of description. When describing a component (such as a layer, film, region or substrate) on another component or on the surface of another component, the component can be "directly" located on the surface of the other component, or a third component can be present between the two components. Conversely, when describing a component on the surface of another component or when another component is formed or provided on the surface of a component, it means that there is no third component between the two components. In addition, when describing a component as being "substantially" formed on another component, it means that the component is not formed on the entire surface (or front surface) of the other component, nor is it formed on a partial edge of the entire surface.

[0033] In the description of the embodiments of the present disclosure, when a component is referred to as "including" another component, unless otherwise specified, other components are not excluded, and other components may be further included. In addition, when a component such as a layer, film, region, or plate is referred to as being "on / located on" another component, it can be "directly on" the other component (i.e., located on the surface of the other component with no other components between them), or another component can be present between them. In addition, when a component such as a layer, film, region, or plate is "directly on" another component, or when a component such as a layer, film, region, or plate is located on the surface of another component, it means that no other components are located between them.

[0034] The terms used herein in the description of the various embodiments are intended only to describe the specific embodiments and are not intended to be limiting. As used in the description of the various embodiments and the appended claims, "the component" is intended to include the plural form unless the context clearly indicates otherwise. A component includes a layer, film, region, or plate.

[0035] The following describes various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in the various embodiments of the present disclosure to facilitate a better understanding of the present disclosure. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can still be implemented.

[0036] refer to Figures 1 to 3 ,in, Figure 1 This is a schematic diagram of the structure of an abnormal battery cell provided by an embodiment of the present disclosure. Figure 2 A schematic diagram of the structure of a photovoltaic module repair device and a solar cell provided in an embodiment of the present disclosure. Figure 3 A schematic structural diagram of a photovoltaic module repair device provided by the present invention.

[0037] In some embodiments, a photovoltaic module includes multiple battery strings, each battery string includes multiple connected battery cells, adjacent battery cells are connected via welding ribbons 11, and a coating 12 is provided on the surface of the battery cell, and the coating 12 is used to fix the welding ribbon 11 on the surface of the battery cell. It is characterized in that it includes: an abnormality detection and positioning device (not shown), the abnormality detection and positioning device is used to detect photovoltaic modules, select abnormal battery strings in the photovoltaic modules, and confirm abnormal battery cells 10 in the abnormal battery strings.

[0038] The photovoltaic assembly further includes a repair platform 101, which is used to carry abnormal battery strings.

[0039] The photovoltaic assembly further includes a gripping mechanism 102 , which is at least configured to absorb an area of ​​the coating 12 on the surface of the abnormal solar cell 10 adjacent to the first boundary.

[0040] The photovoltaic assembly also includes: a moving control mechanism 103, which is connected to the grasping mechanism 102 and is used to control the grasping mechanism 102 to move in the vertical direction, wherein after the grasping mechanism 102 adsorbs the coating 12, the moving control mechanism 103 controls the grasping mechanism 102 to move upward in the vertical direction to a preset height to apply a pulling force to the coating 12, and after the grasping mechanism 102 moves to the preset height, the moving control mechanism 103 is also used to control the grasping mechanism 102 to move along the first boundary toward the second boundary of the abnormal battery cell 10, so that the grasping mechanism 102 drives the coating 12 to be peeled off from the abnormal battery cell 10, and the second boundary is opposite to the first boundary.

[0041] The disclosed embodiment provides a photovoltaic module repair device, which tests the photovoltaic module through an abnormal detection and positioning device, selects the abnormal battery string in the photovoltaic module, and locates the abnormal battery cell 10 in the abnormal battery string. Then, the gripping mechanism 102 and the movement control mechanism 103 cooperate to first adsorb the coating 12 on the surface of the abnormal battery cell 10, and then the movement control mechanism 103 provides external force to peel off the coating 12 from the battery cell. In this way, the battery cell can be reused, reducing the number and scrap rate of scrapped battery cells.

[0042] In some embodiments, the cells in the photovoltaic module include, but are not limited to, PERC cells (Passivated Emitter Rear Cell), IBC (Interdigitated Back Contact), TOPCon (Tunnel Oxide Passivated Contact), HIT / HJT (Heterojunction Technology), solar thin-film cells, and tandem cells, or any combination thereof. Among them, solar thin-film cells include, but are not limited to, perovskite solar thin-film cells, copper indium selenide solar thin-film cells, gallium arsenide solar thin-film cells, and cadmium sulfide solar thin-film cells. Tandem cells include, but are not limited to, perovskite cells superimposed on crystalline silicon cells, perovskite cells superimposed on perovskite cells, and perovskite cells superimposed on thin-film cells.

[0043] In some embodiments, during the process of connecting the cells in series, the low-temperature welding of photovoltaic modules is to first fix the welding ribbon to the surface of the cell through the covering film 12, and then fix the welding ribbon through the lamination process, so as to avoid the welding process from affecting the cell.

[0044] For the abnormality detection and positioning device, the photovoltaic module may be electrically inspected first to detect abnormal battery strings in the battery strings of the photovoltaic module, and then the abnormal battery strings may be electrically inspected again to confirm the abnormal battery cells 10 in the abnormal battery strings.

[0045] For the rework carrier 101, the rework carrier 101 can be provided with a fixing mechanism (not shown in the figure), which is used to fix the abnormal battery string, so that in the subsequent process of removing the coating 12 on the surface of the abnormal battery cell 10, the abnormal battery cell 10 is controlled not to move. The fixing mechanism can provide a pulling force to the abnormal battery cell 10 by fixing the abnormal battery string, and provide a pulling force to the coating 12 through the cooperation of the grasping mechanism 102 and the moving control mechanism 103. The pulling force provided by the fixing mechanism to the abnormal battery cell 10 is opposite to the pulling force provided to the coating 12 by the cooperation of the grasping mechanism 102 and the moving control mechanism 103.

[0046] In some embodiments, the fixing mechanism may be a snap-fit ​​device, by which the abnormal battery string can be fixed; in other embodiments, the fixing mechanism may be a vacuum device, by which a vacuum can be drawn onto the contact surface between the battery string and the rework platform, thereby fixing the battery string to the surface of the rework platform by means of an air pressure difference.

[0047] In some embodiments, the gripping mechanism 102 may include: at least one suction cup 112, the suction cup 112 being used to absorb the covering film 12, wherein a pressure difference exists between the cavity of the suction cup 112 facing the covering film 12 and the outside thereof; and a heating device 122, the heating device 122 being located on the side of the suction cup 112 facing the second boundary and being used to heat the covering film 12. The suction cup 112 is used to apply a pulling force to the covering film 12, and the heating device 122 is used to heat the covering film 12, which can facilitate separation of the covering film 12 from the abnormal battery cell 10. Furthermore, the heating device 122 is located on the side of the suction cup 112 facing the second boundary, so that the covering film 12 can be heated during the movement of the heating device 122 during the movement of the control mechanism 103, so that the covering film 12 is always heated in the direction of the moving path during the movement of the control mechanism 103, thereby facilitating the peeling of the covering film 12 from the abnormal battery cell 10.

[0048] In some embodiments, the heating device 122 may be a lamp heating device that utilizes a lamp for heating, and the temperature of the lamp is adjustable.

[0049] In some embodiments, the length of the lamp tube in the lamp tube heating device can be equal to the width of the coating 12, so that every part of the coating 12 can be heated when heating the coating 12, thereby controlling the heating of the coating 12 to be relatively uniform, so that the subsequent movement control mechanism can increase the possibility of completely peeling off the coating 12 during the process of peeling off the coating 12.

[0050] In some embodiments, the heating device 122 can heat the temperature of the covering film 12 to 20°C to 100°C. It is understood that if the heating temperature of the heating device 122 is less than 20°C, the adhesion between the covering film 12 and the abnormal battery cell 10 is relatively high, making it difficult to peel the covering film 12 using the gripping mechanism 102 and the movement control mechanism 103. If the heating temperature of the heating device 122 is greater than 100°C, the heating device 122 may heat and deform the covering film 12, which increases the difficulty of the gripping mechanism 102 and the movement control mechanism 103 in peeling the covering film 12. Therefore, by providing the heating device 122 to heat the temperature of the covering film 12 to 20°C to 100°C, it can facilitate the gripping mechanism 102 and the movement control mechanism 103 to peel the covering film 12 while increasing the integrity of the gripping mechanism 102 and the movement control mechanism 103 in peeling the covering film 12.

[0051] In some embodiments, the gripping mechanism 102 may further include: a heating element (not shown in the drawings), which is fixed to the outer side of the suction cup 112 and is used to heat the suction cup 112, thereby facilitating the peeling of the coating 12 at the corresponding position of the suction cup 112.

[0052] In some embodiments, the number of suction cups 112 is greater than or equal to two, and along the arrangement direction of the multiple suction cups 112, the distance between adjacent suction cups 112 located in the middle is greater than or equal to the distance between adjacent suction cups 112 located at the edge. It is understandable that for the heating device 122 of the gripping mechanism 102, the heat of the heating device 122 is diffused toward the surrounding area. In other words, for an abnormal cell 10, the portion in the middle of the abnormal cell 10 absorbs more heat, and correspondingly, the coating 12 in the middle is easier to remove. Therefore, setting the distance between adjacent suction cups 112 located in the middle to be greater than or equal to the distance between adjacent suction cups 112 located at the edge can reduce the number of suction cups 112, thereby reducing the cost of photovoltaic module repair equipment.

[0053] It can be understood that the film 12 in the middle position is easier to remove, and setting the distance between adjacent suction cups 112 in the middle to be greater than or equal to the distance between adjacent suction cups 112 at the edge can also make the force on the corresponding positions of the film 12 and the suction cups 112 relatively uniform, thereby facilitating the peeling of the film 12 through the suction cups 112.

[0054] In some embodiments, the movement control mechanism 103 is further configured to control the gripping mechanism 102 to move vertically downward after the gripping mechanism 102 has attached the film 12, thereby squeezing the gas within the cavity. It is understood that squeezing the gas within the cavity by the movement control mechanism 103 can control the pressure difference between the cavity and the external air pressure, thereby increasing the tightness of the gripping mechanism 102's attachment to the film 12, preventing the film 12 from detaching from the gripping mechanism 102 and increasing the likelihood of the film 12 peeling off.

[0055] refer to Figure 3 and Figure 5 ,in, Figure 5 A schematic diagram of the structure of a gripping mechanism provided in one embodiment of the present disclosure. In some embodiments, the gripping mechanism 102 further includes: an exhaust pipe 132, one end of which is connected to the cavity; and an exhaust pump 142, which is connected to the other end of the exhaust pipe 132. The exhaust pump 142 is used to exhaust air from the cavity during the peeling of the film 12 from the abnormal battery cell 10. By providing the gripping mechanism 102 with the exhaust pipe 132 and the exhaust pump 142, the pressure difference between the cavity and the outside world is continuously maintained during the process of peeling the film 12, thereby ensuring that the film 12 and the suction cup 112 will not separate during the process of peeling the film 12, thereby ensuring the reliability of the process of peeling the film 12.

[0056] Combined with reference Figure 2 and Figure 4 ,in, Figure 4A schematic diagram of the structure of another photovoltaic module repair device provided by an embodiment of the present disclosure. In some embodiments, the gripping mechanism 102 further includes: a clamping member 152, the clamping member 152 is connected to the movement control mechanism 103, and the movement control mechanism 103 controls the clamping member 152 to clamp and fix the boundary position of the film 12 during the peeling of the film 12 from the abnormal solar cell 10. By providing the gripping mechanism 102 with the clamping member 152, the film 12 and the gripping mechanism 102 are further fixed during the peeling process, thereby further preventing the film 12 from falling off the gripping mechanism 102 during the peeling process, thereby ensuring the reliability of the peeling process of the film 12.

[0057] In some embodiments, the clamping member 152 may be a robot arm, which opens when the movement control mechanism 103 moves toward the abnormal battery cell and closes when it moves away from the abnormal battery cell, thereby achieving automatic fixing and opening.

[0058] In some embodiments, the apparatus further includes a blowing mechanism 104, which is located on the side of the gripping mechanism 102 facing the first boundary. The blowing port of the blowing mechanism 104 is directed toward the junction where the covering film 12 is peeled off from the abnormal battery cell 10, and is used to blow the covering film 12 during the removal process. By providing the blowing mechanism 104, the covering film 12 can be blown during the process of peeling the covering film 12 by the gripping mechanism 101 and the movement control mechanism 102, thereby further facilitating the peeling of the covering film 12.

[0059] refer to Figure 2 In some embodiments, the angle α between the blowing direction of the air outlet and the normal direction of the surface of the abnormal battery cell 10 is 30° to 60°, for example, 40°, 45°, 53°, or 58°. By setting the angle α between the blowing direction of the air outlet and the normal direction of the surface of the abnormal battery cell 10 to 30° to 60°, the air outlet can be directed toward the connection surface between the cover film 12 and the battery cell, thereby facilitating the peeling of the cover film 12 from the battery cell and increasing the peeling speed of the cover film 12.

[0060] refer to Figure 6 , Figure 6A structural schematic diagram of a film pasting mechanism provided for an embodiment of the present disclosure. In some embodiments, the photovoltaic module repair equipment may further include: a film pasting mechanism 105, the film pasting mechanism 105 is used to re-paste the film 12 on the surface of the abnormal cell 10 after removing the film 12 on the surface of the abnormal cell 10; a heating block 106, the heating block 106 is directly opposite to the repair carrier 102, and is used to press and heat the re-pasted film 12. By setting the film pasting mechanism 105 to re-paste a new film 12 on the surface of the abnormal cell 10, the heating block 106 is used to preliminarily re-fix the film 12 to the cell, thereby preventing the re-pasted film 12 from detaching from the cell, and then the cell after the re-pasted film 12 can be electrically reconnected to other cells.

[0061] In some embodiments, the film applying mechanism 105 may be a heating press block, which can fix the film 12 on the surface of the battery cell by directly pressing the heating press block on the surface of the film.

[0062] In some embodiments, after the gripping mechanism 102 and the movement control mechanism 103 remove the covering film 12 , the soldering ribbon 11 can also be removed, and a new soldering ribbon 11 can be reinstalled after the soldering ribbon 11 is removed, so that the abnormal battery cell 10 can be re-formed into a battery string with other battery cells.

[0063] The disclosed embodiment provides a photovoltaic module repair device, which tests the photovoltaic module through an abnormal detection and positioning device, selects the abnormal battery string in the photovoltaic module, and locates the abnormal battery cell 10 in the abnormal battery string. Then, the gripping mechanism 102 and the movement control mechanism 103 cooperate to first adsorb the coating 12 on the surface of the abnormal battery cell 10, and then the movement control mechanism 103 provides external force to peel off the coating 12 from the battery cell. In this way, the battery cell can be reused, reducing the number and scrap rate of scrapped battery cells.

[0064] Another embodiment of the present disclosure further provides a photovoltaic module repair method, which can be implemented by the above-mentioned photovoltaic module repair equipment. It should be noted that the same or corresponding parts of the above-mentioned embodiments can refer to the corresponding description of the above-mentioned embodiments and will not be repeated below.

[0065] In some embodiments, a method for repairing a photovoltaic module may include: inspecting the photovoltaic module, selecting abnormal cell strings in the photovoltaic module, and identifying abnormal cell slices in the abnormal cell strings.

[0066] The repair method of a photovoltaic module may include: removing the coating on the surface of the abnormal cell.

[0067] The repair method of photovoltaic modules may include: re-applying a new film on the surface of the abnormal cell.

[0068] The disclosed embodiment removes the film on the surface of abnormal battery cells and then re-applies a new film, so that the battery cells can be reused, thereby reducing the number and scrap rate of scrapped battery cells.

[0069] In some embodiments, photovoltaic modules may be inspected by an abnormality detection and positioning device, and abnormal cell strings may be detected and positioned through photoluminescence testing, and abnormal cells in the abnormal cell strings may be positioned for subsequent repair operations.

[0070] In some embodiments, the film on the surface of the abnormal battery cell can be removed by the cooperation of a rework carrier, a gripping mechanism and a motion control mechanism, wherein the rework carrier is used to fix the abnormal battery cell, the gripping mechanism is used to adsorb the film on the surface of the abnormal battery cell, and the motion control mechanism is used to control the movement of the gripping mechanism, thereby controlling the fixation between the gripping mechanism and the film, and removing the film through the gripping mechanism. The film is removed by first controlling the gripping mechanism to fix the film, and then driving the gripping mechanism to move through the motion control mechanism.

[0071] In some embodiments, the gripping mechanism may be a suction cup, and the movement control mechanism may first control the suction cup to move toward the abnormal battery cell, and remove the air between the suction cup and the film by squeezing, thereby forming an air pressure difference between the air pressure between the suction cup and the abnormal battery cell and the external air pressure, thereby fixing the gripping mechanism and the film.

[0072] After being fixed between the suction cup and the covering film, the suction cup is moved away from the abnormal battery cell by the movement control mechanism, and the covering film is peeled off from the abnormal battery cell by controlling the suction cup to move along the first boundary of the abnormal battery cell toward the second boundary.

[0073] In some embodiments, the film is heated during the process of peeling off the film, thereby facilitating the peeling off of the film.

[0074] In some embodiments, before re-applying a new film on the surface of the abnormal battery cell, the following may also be included: first removing the solder strip on the surface of the abnormal battery cell. By removing the solder strip on the surface of the abnormal battery cell, the abnormal battery cell can be separated from the abnormal battery string. On the one hand, it can be convenient to determine whether the abnormal battery cell itself has an abnormality. On the other hand, it can be convenient to install a new battery cell on the abnormal battery string.

[0075] In some embodiments, after removing the solder ribbon on the surface of the abnormal battery cell, a new solder ribbon may be installed, thereby further reducing the number and scrap rate of the battery cells.

[0076] Those skilled in the art will appreciate that the above-described embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made to them in form and detail without departing from the spirit and scope of the embodiments of the present disclosure. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the embodiments of the present disclosure. Therefore, the scope of protection of the embodiments of the present disclosure shall be based on the scope defined in the claims.

Claims

1. A photovoltaic module repair device, wherein the photovoltaic module includes a plurality of battery strings, the battery strings include a plurality of connected battery cells, adjacent battery cells are connected via welding ribbons, and the battery cells are provided with a film on the surface, the film is used to fix the welding ribbons on the surface of the battery cells, characterized in that: include: An abnormality detection and positioning device is used to detect the photovoltaic assembly, select abnormal battery strings in the photovoltaic assembly, and identify abnormal battery cells in the abnormal battery strings; A rework platform, the rework platform being used to carry the abnormal battery string; a gripping mechanism, configured to at least absorb an area of ​​the film on the surface of the abnormal battery cell adjacent to the first boundary; A movement control mechanism, the movement control mechanism is connected to the grasping mechanism, and is used to control the grasping mechanism to move in the vertical direction, wherein, after the grasping mechanism absorbs the coating, the movement control mechanism controls the grasping mechanism to move upward in the vertical direction to a preset height to apply a pulling force to the coating, and after the grasping mechanism moves to the preset height, the movement control mechanism is also used to control the grasping mechanism to move along the first boundary toward the second boundary of the abnormal battery cell, so that the grasping mechanism drives the coating to be peeled off from the abnormal battery cell, and the second boundary is opposite to the first boundary.

2. The photovoltaic module repair equipment according to claim 1, characterized in that: The gripping mechanism comprises: At least one suction cup, the suction cup being used to absorb the covering film, wherein there is a pressure difference between the cavity inside the suction cup and the outside facing the covering film; A heating device is located on a side of the suction cup facing the second boundary and is used to heat the coating.

3. The photovoltaic module repair equipment according to claim 2, characterized in that: The number of the suction cups is greater than or equal to 2, and along the arrangement direction of the plurality of suction cups, the distance between adjacent suction cups located in the middle is greater than or equal to the distance between adjacent suction cups located at the edge.

4. The photovoltaic module repair equipment according to claim 2, characterized in that: The movement control mechanism is further used to control the grasping mechanism to move downward in the vertical direction after the grasping mechanism absorbs the coating film, so as to squeeze the gas in the cavity.

5. The photovoltaic module repair equipment according to claim 2, characterized in that: The gripping mechanism further comprises: an air extraction pipe, one end of which is connected to the cavity; An air pump is connected to the other end of the air pump pipe, and is used to evacuate the cavity during the period when the film is peeled off from the abnormal battery cell.

6. The photovoltaic module repair equipment according to claim 2, characterized in that: The gripping mechanism further comprises: A heating element is fixed to the outer side of the suction cup and is used to heat the suction cup.

7. The photovoltaic module repair equipment according to claim 1, characterized in that: Also includes: A blowing mechanism is located on the side of the gripping mechanism facing the first boundary, with the blowing port of the blowing mechanism facing the junction where the covering film is peeled off from the abnormal battery cell, and is used to blow the covering film during the process of removing the covering film.

8. The photovoltaic module repair equipment according to claim 7, characterized in that: The angle between the blowing direction of the blowing port and the normal direction of the surface of the abnormal battery cell is 30° to 60°.

9. The photovoltaic module repair equipment according to claim 1, characterized in that: Also includes: a film-applying mechanism, configured to reapply a film on the surface of the abnormal battery cell after removing the film on the surface of the abnormal battery cell; A heating pressing block is directly opposite to the rework carrier and is used for pressing and heating the re-applied covering film.

10. The photovoltaic module repair equipment according to claim 1, characterized in that: The gripping mechanism further comprises: A clamping member is connected to the movement control mechanism, and the movement control mechanism controls the clamping member to clamp and fix the boundary position of the covering film during the period when the covering film is peeled off from the abnormal battery cell.

Images