Photovoltaic cell double-side detection device

Abstract

The application discloses a photovoltaic cell double-side detection device, which comprises a rack, a first detection assembly and a second detection assembly. The rack comprises a first support, a second support and an adjusting assembly. The first support and the second support are arranged on the adjusting assembly. A detection station is arranged on the first support. A transparent plate is arranged on the detection station and used for carrying a cell. The first detection assembly comprises a first light source, a second light source and a first detection element. The first detection element is arranged above the detection station. The first light source and the second light source are used for lighting the cell. The second detection assembly comprises a third light source, a fourth light source and a second detection element. The second detection element is arranged below the detection station. The third light source and the fourth light source are used for lighting the cell. The photovoltaic cell double-side detection device synchronously detects the double sides of the cell through the first detection assembly and the second detection assembly, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell testing technology, and in particular to a double-sided testing device for photovoltaic cells. Background Technology

[0002] A solar panel is a thin film of photovoltaic semiconductors that generates electricity directly using sunlight. It is also known as a "solar chip" or "photovoltaic cell". As long as the illuminance conditions are met, it can instantly output voltage and generate current when there is a circuit.

[0003] The manufacturing process of solar panels involves several key steps, including silicon wafer cleaning, diffusion junction formation, etching, coating, screen printing, and sintering. Each step is crucial, and if problems arise and are not addressed in time, it can lead to a waste of human, material, and financial resources. Therefore, the inspection of solar panels during the production process is of paramount importance.

[0004] Current battery cell inspection methods involve setting up an inspection camera on the conveyor channel to inspect the first side of the battery cell, and then using a robotic arm or flipping assembly to flip the battery cell to inspect the second side. This method cannot directly inspect both sides of the battery cell simultaneously, resulting in low inspection efficiency. Utility Model Content

[0005] To address the related technical problems, the purpose of this utility model is to provide a double-sided inspection device for photovoltaic cells, thereby solving the problem of low inspection efficiency for cells.

[0006] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0007] A double-sided inspection device for photovoltaic cells includes a frame, a first inspection component, and a second inspection component, wherein:

[0008] The frame includes a first support member, a second support member, and an adjustment assembly. The first and second support members are reciprocally movable along a first direction and are arranged side-by-side at intervals along a second direction. Inspection stations are provided on the first and second support members, and transparent plates are provided at the inspection stations. The transparent plates are configured to support the battery cells to be inspected.

[0009] The first inspection component includes a first illumination element, a second illumination element, and a first inspection element. The first inspection element is positioned directly above the inspection station. The first and second illumination elements are symmetrically positioned on either side of the first inspection element. The first and second illumination elements are configured to illuminate the top surface of the solar cell.

[0010] The second detection component includes a third illumination element, a fourth illumination element, and a second detection element. The second detection element is located directly below the detection station, and the third and fourth illumination elements are symmetrically arranged on both sides of the second detection element. The third and fourth illumination elements are configured to illuminate the bottom surface of the solar cell.

[0011] Optionally, the adjustment assembly includes a base and a fixing member. The base has guide grooves at both ends along the second direction, the guide grooves extend along the first direction, and a receiving groove is formed on the outer side of the guide grooves along the first direction. The fixing member is movably disposed in the receiving groove, and the guide grooves are configured to guide the first support member and the second support member to move along the first direction.

[0012] Optionally, the bottom of the first support member and the bottom of the second support member are provided with fixing holes, which are threadedly connected to the fixing members so that the first support member and the second support member are fixed on the base.

[0013] Optionally, a first limiting groove is provided at the top center of the transparent plate, the first limiting groove being configured to accommodate the battery cell, and a second limiting groove is provided at both ends of the bottom of the transparent plate along the first direction, the second limiting groove being provided with a gripper, the gripper being configured to grip the top of the first support member or the top of the second support member.

[0014] Optionally, the transparent panel can be made of glass.

[0015] Optionally, the first inspection component includes a first mounting bracket and a first camera. The first mounting bracket is disposed on the side of the inspection station, the first camera is disposed on the top of the first mounting bracket, and a first illumination component and a second illumination component are hinged to the first mounting bracket.

[0016] Optionally, the second inspection component includes a second mounting bracket and a second camera. The second mounting bracket is located on the side of the inspection station, and the second camera is located on the top of the second mounting bracket. The third and fourth light sources are hinged to the second mounting bracket.

[0017] The beneficial effects of this utility model are as follows: Compared with the prior art, the double-sided inspection device for photovoltaic cells provided by this utility model has the following beneficial effects:

[0018] 1. By setting up a first detection component and a second detection component, the detection efficiency of both sides of the battery cell can be detected simultaneously, which improves the detection efficiency compared with the traditional single-sided detection.

[0019] 2. The guide groove of the base guides the first support and the second support to move along the first direction, adjusts the distance between the testing stations, adapts to the testing needs of battery cells of different specifications, and improves the scope of application;

[0020] 3. The first limiting groove, in conjunction with the gripper, improves the stability of the battery cells during testing. Attached Figure Description

[0021] To more clearly illustrate and understand the technical solutions in the embodiments of this utility model, the accompanying drawings used in the background technology and embodiment description of this utility model will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a double-sided inspection device for photovoltaic cells provided in an embodiment of this utility model;

[0023] Figure 2 This is a top view of a double-sided inspection device for photovoltaic cells provided in an embodiment of this utility model;

[0024] Figure 3 This is a side view of the adjustment component of a double-sided detection device for photovoltaic cells provided in an embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram showing the positional relationship between the second limiting groove and the gripper of a double-sided photovoltaic cell testing device provided in this embodiment of the present invention. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] To facilitate understanding of this utility model, a more complete description of it will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. 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 utility model belongs. The terminology used herein in the description of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figures 1 to 4 As shown, this embodiment provides a double-sided inspection device for photovoltaic cells, which includes a frame 10, a first inspection component 20, and a second inspection component 30. The frame 10 includes a first support member 11, a second support member 12, and an adjustment component 13. The first support member 11 and the second support member 12 are reciprocally mounted on the adjustment component 13 along a first direction (x direction in the figure) and are arranged side by side at intervals along a second direction (y direction in the figure). Inspection stations 40 are provided on the first support member 11 and the second support member 12, and transparent plates 41 are provided on the inspection stations 40. The transparent plates 41 are configured to support the cells to be inspected. The first inspection component 20 includes a first illumination element. 21. A second illumination element 22 and a first detection element 23. The first detection element 23 is positioned directly above the detection station 40. The first illumination element 21 and the second illumination element 22 are symmetrically positioned on both sides of the first detection element 23. The first illumination element 21 and the second illumination element 22 are configured to illuminate the top surface of the battery cell. The second detection assembly 30 includes a third illumination element 31, a fourth illumination element 32, and a second detection element 33. The second detection element 33 is positioned directly below the detection station 40. The third illumination element 31 and the fourth illumination element 32 are symmetrically positioned on both sides of the second detection element 33. The third illumination element 31 and the fourth illumination element 32 are configured to illuminate the bottom surface of the battery cell.

[0029] Specifically, the first direction and the second direction are perpendicular to each other.

[0030] As can be seen, by setting the first detection component 20 and the second detection component 30 to simultaneously detect both sides of the solar cell, the detection efficiency is improved compared with the traditional single-sided detection. At the same time, the symmetrical layout of the illumination components on the top and bottom surfaces ensures uniform illumination on the surface of the solar cell, avoids detection errors caused by uneven light, and improves the accuracy of defect identification.

[0031] In one embodiment, the adjustment assembly 13 includes a base 130 and a fixing member 131. The base 130 has guide grooves 132 at both ends along the second direction. The guide grooves 132 extend along the first direction. The outer side of the guide grooves 132 has a receiving groove 133 along the first direction. The fixing member 131 is movably disposed in the receiving groove 133. The guide grooves 132 are configured to guide the first support member 11 and the second support member 12 to move along the first direction.

[0032] As can be seen, the first support member 11 and the second support member 12 can move along the guide groove 132 to adapt to battery cells of different sizes. By adjusting the spacing of the detection station 40, compatible detection of battery cells of multiple specifications can be achieved, reducing equipment replacement costs. The guide groove 132 limits the movement trajectory of the first support member 11 and the second support member 12 to ensure the positional accuracy of the detection station 40 and avoid detection position deviation caused by the offset of the first support member 11 and the second support member 12.

[0033] In one embodiment, the bottom of the first support member 11 and the bottom of the second support member 12 are both provided with fixing holes 110, which are threadedly connected to the fixing member 131 so that the first support member 11 and the second support member 12 are fixed on the base 130.

[0034] As can be seen, the threaded connection between the fixing hole 110 and the fixing member 131 can fix the adjusted first support member 11 and second support member 12 on the base 130. The structure is simple and easy to operate.

[0035] In one embodiment, a first limiting groove 42 is provided at the top center of the transparent plate 41. The first limiting groove 42 is configured to accommodate the battery cell. Second limiting grooves 43 are provided at both ends of the bottom of the transparent plate 41 along the first direction. A gripper 44 is provided in the second limiting groove 43. The gripper 44 is configured to grip the top of the first support member 11 or the top of the second support member 12.

[0036] It can be seen that the first limiting groove 42 cooperates with the gripper 44 to ensure the stability of the fixed battery cell, thereby improving the accuracy of the test data.

[0037] In one implementation, the transparent plate 41 is a glass plate.

[0038] As can be seen, the transparent plate 41 is made of glass, which ensures that the bottom detection component can effectively acquire the bottom image of the battery cell and avoid detection blind spots caused by insufficient light transmittance of the material.

[0039] In one embodiment, the first detection component 23 includes a first mounting frame and a first camera. The first mounting frame is disposed on the side of the detection station 40, and the first camera is disposed on the top of the first mounting frame. The first illumination component 21 and the second illumination component 22 are hinged to the first mounting frame.

[0040] As can be seen, the illumination component is hinged to the mounting bracket, and the illumination angle can be adjusted according to the inspection requirements to optimize the reflective effect of defects on the surface of the battery cells and improve the ability to identify defects such as microcracks and scratches.

[0041] In one embodiment, the second detection element 33 includes a second mounting bracket and a second camera. The second mounting bracket is disposed on the side of the detection station 40, and the second camera is disposed on the top of the second mounting bracket. The third illumination element 31 and the fourth illumination element 32 are hinged to the second mounting bracket.

[0042] As can be seen, the structure of the second detection component 30 is consistent with that of the first detection component 20 and they are symmetrical to each other, ensuring that the electrodes, back field and other areas on the bottom surface of the battery cell can be clearly detected, and achieving full coverage identification of double-sided defects.

[0043] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0044] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above examples. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sided inspection device for photovoltaic cells, characterized in that, The photovoltaic cell double-sided testing device includes a frame, a first testing component, and a second testing component, wherein: The frame includes a first support member, a second support member, and an adjustment assembly. The first and second support members are reciprocally movable along a first direction and are arranged side-by-side at intervals along a second direction. Each of the first and second support members has a testing station, and a transparent plate is provided at each testing station. The transparent plate is configured to support the battery cell to be tested. The first detection component includes a first illumination element, a second illumination element, and a first detection element. The first detection element is positioned directly above the detection station. The first and second illumination elements are symmetrically arranged on both sides of the first detection element. The first and second illumination elements are configured to illuminate the top surface of the solar cell. The second detection component includes a third illumination element, a fourth illumination element, and a second detection element. The second detection element is located directly below the detection station. The third illumination element and the fourth illumination element are symmetrically arranged on both sides of the second detection element. The third illumination element and the fourth illumination element are configured to illuminate the bottom surface of the battery cell.

2. The photovoltaic cell double-sided testing device according to claim 1, characterized in that, The adjustment assembly includes a base and a fixing member. The base has guide grooves at both ends along the second direction, and the guide grooves extend along the first direction. A receiving groove is formed on the outer side of the guide groove along the first direction. The fixing member is movably disposed in the receiving groove. The guide groove is configured to guide the first support member and the second support member to move along the first direction.

3. The photovoltaic cell double-sided testing device according to claim 1, characterized in that, The bottom of the first support member and the bottom of the second support member are provided with fixing holes, which are threadedly connected to the fixing members so that the first support member and the second support member are fixed on the base.

4. The photovoltaic cell double-sided inspection device according to claim 1, characterized in that, A first limiting groove is provided at the top center of the transparent plate, which is configured to accommodate the battery cell. A second limiting groove is provided at both ends of the bottom of the transparent plate along the first direction. A clamping claw is provided in the second limiting groove, which is configured to clamp the top of the first support member or the top of the second support member.

5. The photovoltaic cell double-sided inspection device according to claim 1, characterized in that, The transparent plate is a glass plate.

6. The photovoltaic cell double-sided inspection device according to claim 1, characterized in that, The first detection component includes a first mounting frame and a first camera. The first mounting frame is disposed on the side of the detection station, and the first camera is disposed on the top of the first mounting frame. The first illumination element and the second illumination element are hinged to the first mounting frame.

7. The photovoltaic cell double-sided inspection device according to claim 1, characterized in that, The second detection component includes a second mounting bracket and a second camera. The second mounting bracket is disposed on the side of the detection station, and the second camera is disposed on the top of the second mounting bracket. The third and fourth illumination components are hinged to the second mounting bracket.

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