Solar cell detection structure and solar cell detection device

Abstract

The utility model discloses a solar cell detection structure and a solar cell detection device, which are applied to the field of defect detection, and comprise a probe row which comprises a plurality of probe groups; each probe group comprises a plurality of probes arranged along a specified direction, and the probe groups are parallel to each other; in at least one probe row, the probe ruler diameters of two adjacent probe groups are different. According to the utility model, the plurality of probe groups are arranged in the probe row, the probe diameters of the probes in at least two adjacent probe groups are different, and the probe row is formed by the probe groups with the same probe diameter, so that the contact area of the probes in the probe row and the corresponding electrodes can be increased, and the accuracy of battery detection is further improved; and meanwhile, the risk of fragments of the tested battery is reduced.

Description

Technical Field

[0001] The utility model relates to the field of defect detection, in particular to a solar cell detection structure and a solar cell detection device. Background Art

[0002] When preparing solar cells in the prior art, it is necessary to detect the defects inside the prepared cell wafers. Generally, EL (electroluminescence) testing is used to detect the defects inside the cell wafers. In this process, an external power supply device uses a probe row to connect with the cell wafer to be measured. The upper and lower sub-probe rows of the traditional probe row are both composed of metal probe arrangements to form a probe row. When testing, it presses on the main grid to collect current. However, for a cell without a main grid, since no main grid is set, the traditional probe row cannot collect the current of the cell without a main grid, and thus the traditional probe row cannot perform EL testing on the cell without a main grid.

[0003] Currently, the probe row used more frequently for testing cells without a main grid is that the upper probe row uses metal strips with different numbers to press on the false main grid at the upper surface of the cell, and the lower probe row is composed of probes with a diameter of 1.5 mm. Specifically, reference can be made to Figure 1 , Figure 1 which is a schematic structural diagram of the probe row in an existing cell detection structure provided by an embodiment of the present utility model. However, in actual application, such a probe row causes large fluctuations in the efficiency test of solar cells, inaccurate EL detection, and a high fragmentation rate of cell wafers during testing.

[0004] Therefore, how to provide a probe row that can avoid large fluctuations in the efficiency test of solar cells, inaccurate EL detection, and a high fragmentation rate of cell wafers during testing is a technical problem that those skilled in the art need to solve urgently. Utility Model Content

[0005] In view of this, the purpose of the present utility model is to provide a solar cell detection structure and a solar cell detection device, which solve the problems of large fluctuations in the efficiency test of solar cells and inaccurate EL detection in the prior art.

[0006] To solve the above technical problems, the present utility model provides a solar cell detection structure, including:

[0007] A probe row, the probe row includes a plurality of probe groups; each of the probe groups includes a plurality of probes arranged along a specified direction, and the probe groups are parallel to each other;

[0008] In at least one of the probe rows, the probe sizes of two adjacent probe groups are different.

[0009] Optionally, at least one of the probe rows includes probe groups with two probe sizes, and the probe sizes of adjacent probe groups are different; and / or,

[0010] A plurality of the probes in each of the probe groups are arranged in a straight line.

[0011] Optionally, among the probe rows in which the probe diameters of adjacent probe groups are different, there are two probe groups.

[0012] Optionally, the probes in the two probe groups are arranged in an interleaved manner; and / or,

[0013] The two probe groups are correspondingly set as a probe group with a probe diameter of 2.5 mm and a probe group with a probe diameter of 2 mm.

[0014] Optionally, the probe includes a cylinder body, a spring, and a probe head;

[0015] Wherein, one end of the cylinder body is a closed end, and the other end is an open end; the probe head is movably inserted into the open end; the spring is disposed inside the cylinder body and is arranged between the closed end and the probe head.

[0016] Optionally, the cylinder body includes a cylinder cap and a cylinder body; one end of the cylinder body is threadedly connected to the cylinder cap to form the closed end, and the other end of the cylinder body extends radially inward to form a ring-shaped step to form the open end;

[0017] The probe head includes an abutting end, a connecting rod, and a contact end connected in sequence; the outer diameter of the abutting end is greater than the inner diameter of the ring-shaped step but not greater than the inner diameter of the cylinder body, and the outer diameter of the connecting rod is not greater than the inner diameter of the ring-shaped step.

[0018] Optionally, the connecting rod is detachably connected to the contact end.

[0019] The present invention further provides a solar cell detection device, including:

[0020] A first conductive structure electrically connected to the first polar electrode of the battery cell, and a second conductive structure electrically connected to the second polar electrode of the battery cell;

[0021] The first conductive structure and / or the second conductive structure is the solar cell detection structure as described above.

[0022] Optionally, the first conductive structure is a probe row in the solar cell detection structure as described above;

[0023] The second conductive structure includes a metal strip electrically connected to the second polar electrode of the battery cell.

[0024] Optionally, the second conductive structure is a composite conductive structure formed by a probe and the metal strip.

[0025] It can be seen that the solar cell detection structure provided by the present utility model includes a probe row, and the probe row includes a plurality of probe groups; each probe group includes a plurality of probes arranged in a specified direction, and the probe groups are parallel to each other; in at least one probe row, the probe diameters of two adjacent probe groups are different. By providing a plurality of probe groups in the probe row and the probe diameters of at least two adjacent probe groups being different, the probe row formed by probe groups with the same probe diameter can increase the contact area between the probes in the probe row and the corresponding electrodes, thereby improving the accuracy of battery detection and reducing the risk of the tested battery being fragmented at the same time.

[0026] In addition, the present utility model also provides a solar cell detection device, which also has the above beneficial effects. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0028] Figure 1 It is a schematic structural diagram of a probe row in an existing battery detection structure provided by an embodiment of the present utility model;

[0029] Figure 2 It is a schematic structural diagram of a probe row in a solar cell detection structure provided by an embodiment of the present utility model;

[0030] Figure 3 It is a schematic structural diagram of a probe row in another solar cell detection structure provided by an embodiment of the present utility model;

[0031] Figure 4 It is a schematic structural diagram of a probe row in yet another solar cell detection structure provided by an embodiment of the present utility model;

[0032] Figure 5 It is a schematic structural diagram of a probe in a solar cell detection structure provided by an embodiment of the present utility model;

[0033] Figure 6 It is a schematic structural diagram of a probe in another solar cell detection structure provided by an embodiment of the present utility model;

[0034] Figure 7 It is a partial structural schematic diagram of a probe in a solar cell detection structure provided by an embodiment of the present utility model;

[0035] Figure 8Schematic diagram of the composite conductive structure in a solar cell detection structure provided by an embodiment of the present invention;

[0036] Figures 1 to 8 Among them, the reference signs are explained as follows:

[0037] 10 - probe row, 11 - probe group, 111 - probe, 112 - cylinder, 1121 - annular step, 113 - spring, 114 - probe head, 1141 - abutting end, 1142 - connecting rod, 1143 - contact end, 12 - metal strip, 20 - composite conductive structure. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Specifically, please refer to the following embodiments:

[0039] In the prior art, when preparing solar cells and detecting defects inside the prepared cell wafers, generally EL (electroluminescence) testing is used to detect the defects inside the cell wafers. During the detection process, an external power supply device is required to connect to the cell wafer to be measured through a probe row. In a traditional probe row, there is a structure formed by arranging multiple rows of probes correspondingly (such as Figure 1 shown), and the probe diameters and arrangement methods of the probes in adjacent rows are the same. Although the regularity of the probe layout is ensured, it also results in a limited total contact area between the arranged probes and the cell wafer. For example, when the width of the carrier for placing the probes is greater than the diameter of one probe but less than the diameter of two probes, the total contact area between the probes arranged in the carrier and the cell wafer is relatively low, which further leads to problems such as large fluctuations in the efficiency test of solar cells, inaccurate EL detection, and high fragmentation rate of cell wafers during testing.

[0040] The present invention sets that there are multiple probe groups in the probe row, and the probe sizes in at least two adjacent probe groups are different. The probe row formed by probe groups with the same probe size can increase the contact area between the probes in the probe row and the corresponding electrodes, thereby improving the accuracy of cell detection and reducing the risk of fragmentation of the cell wafer to be measured. The following embodiments can be referred to:

[0041] Embodiment 1:

[0042] Please refer to Figure 2 , Figure 2Schematic diagram of the structure of a probe row in a solar cell detection structure provided by an embodiment of the present invention. The structure may include:

[0043] The probe row 10, and the probe row 10 includes a plurality of probe groups 11; each probe group 11 includes a plurality of probes 111 arranged along a specified direction, and the probe groups 11 are parallel to each other;

[0044] In at least one probe row 10, the probe diameters of two adjacent probe groups 11 are different.

[0045] It should be noted that in this embodiment, the probe row 10 can be set to be connected to the surface on one side of the battery cell, and the probe row 10 includes a plurality of probe groups 11, and each probe group 11 is composed of a plurality of probes 111 arranged. In this embodiment, in the prior art, in a specified area, since only one diameter of probes 111 is arranged, there are vacant areas in the specified area. Especially in an area where only one diameter of probes 111 can be set in width and there are gaps at the same time. In this application, by arranging a plurality of probe groups 11 in the same specified area and setting the probe diameters of adjacent probe groups 11 to be different, the occupied area of the probes 111 in the area is further increased, and then the contact area between the probe row 10 and the battery cell is increased, and the risk of the battery cell being broken due to the action of the probes 111 on the surface of the battery cell is avoided. In this embodiment, the probe row 10 can be conductively connected to the first-polarity electrode in the battery cell, or can also be conductively connected to the second-polarity electrode in the battery cell to detect circuit defects and the like. The probe row 10 includes a plurality of probe groups 11 arranged parallel to each other, and each probe group 11 has a plurality of probes 111 at the same time. In this embodiment, to further increase the contact area between the probe row 10 and the battery cell, the probes 111 of adjacent probe groups 11 in the probe row 10 can be set to have different diameters, and the adjacent probe groups 11 are arranged in a close-packed manner to ensure that the probes 111 in the probe row 10 in the same space are arranged in the manner of the largest contact area with the electrodes in the battery cell, that is, to increase the contact area between the probes 111 in the probe row 10 and the electrodes in the battery cell, improve the accuracy of battery cell detection, and at the same time avoid the battery cell from being fragmented due to excessive local stress, improve the battery cell detection efficiency, especially reduce the volatility of battery efficiency testing, and improve the accuracy of EL detection.

[0046] In a possible embodiment, reference can be made to Figure 3 , Figure 3Schematic diagram of the probe row in another solar cell detection structure provided by an embodiment of the present utility model. It should be noted that adjacent probes 111 with larger diameters are not in close contact. At this time, the total area formed by the intervals between adjacent probes 111 with larger diameters can accommodate a contact area of probes 111 with larger diameters that is smaller than the total contact area of probes 111 with smaller diameters. That is, the contact area with the electrodes in the battery chip reduced due to the non-close contact between adjacent probes 111 with larger diameters is smaller than the total contact area of the introduced probes 111 with smaller diameters with the electrodes in the battery chip, so as to ensure that the contact area between the overall probes 111 of the probe row 10 and the electrodes in the battery chip is increased compared with the arrangement of conventional probes 111.

[0047] It should be further noted that in this embodiment, adjacent probe groups 11 are arranged in a close-packed manner, that is, all the probes 111 in the same probe row 10 are arranged in a close-packed manner. In addition, some of the probes 111 in the probe row 10 are arranged in a close-packed manner, and the remaining probes 111 are in the conventional manner in the prior art. Since their effects are not ideal and the preparation difficulty increases, there is no special description in this application, but they still belong to the inventive concept of this application.

[0048] This embodiment does not limit the specific installation method of the probes 111, as long as they can be stably connected to the electrodes of the battery chip during testing. This embodiment does not limit the specific size of the probes 111, as long as they can achieve electrical connection with the electrodes in the battery chip. This embodiment does not limit the number of probe groups 11 in each probe row 10 and the number of probes 111 in each probe group 11, which can be custom-set according to actual detection needs. At the same time, this embodiment does not limit the size relationship of the probe diameters between adjacent probe groups 11, as long as the effective contact area between the probe row 10 and the electrodes in the battery chip can be increased within the specified area, where the effective contact area is the contact area between the actual probes 111 in the probe row 10 and the electrodes in the battery chip. In this embodiment, the probes 111 with different diameters in adjacent probe groups 11 can be arranged alternately, or the probes 111 with different diameters in adjacent probe groups 11 can be arranged in other ways, which can be adaptively adjusted according to the electrode pattern of the battery chip.

[0049] Furthermore, in order to improve the simplicity of preparing the solar cell detection structure, at least one probe row 10 can be set to include probe groups 11 with two probe diameters, and the probe diameters of adjacent probe groups 11 are different.

[0050] Furthermore, the multiple probes 111 in each probe group 11 are all arranged in a straight line.

[0051] It should be noted that in this embodiment, to avoid increasing the preparation difficulty caused by setting probes 111 with multiple sizes, the sizes of the probes 111 in the probe row 10 are set to two or no more than four different sizes, and the sizes of the probes 111 in adjacent probe groups 11 are different. While ensuring the simplicity of preparation, the contact area between the probes 111 in the probe row 10 and the electrodes in the battery cell is ensured. This embodiment does not limit the specific number of probe groups 11 in the probe row 10 including probes 111 with two probe sizes. When the number of probe groups 11 is 2, each probe group 11 corresponds to one probe size, and the specific probe size is not specifically limited in this embodiment; when the number of probe groups 11 is greater than 2, the probes 111 in the probe groups 11 with different probe sizes can be arranged alternately. In addition, it should be noted that in this embodiment, multiple probes 111 in each probe group 11 are arranged in a straight line, which can further improve the regularity of the probe 111 arrangement and provide simplicity in preparation. In this embodiment, the two probe groups 11 with different sizes can be correspondingly set to sizes of 2.2 mm to 2.8 mm and 1.7 mm to 2.3 mm.

[0052] Furthermore, in order to balance the preparation complexity of the probe row 10 and the contact area between the probe row 10 and the battery cell, reference can be made to Figure 4 , Figure 4 which is a schematic structural diagram of the probe row in another solar cell detection structure provided by the embodiment of the present invention. In the probe row 10 where the probe sizes of adjacent probe groups 11 are different, two probe groups 11 can be included.

[0053] It should be noted that in this embodiment, the probe row 10 is set to include two probe groups 11. On the basis of only setting probes 111 with a single size in the prior art, the contact area between the probes 111 and the electrodes in the battery cell is effectively increased with little change in the preparation complexity, which can balance the preparation difficulty of the solar cell detection structure and the problem of the contact area between the probes 111 and the electrodes in the battery cell.

[0054] Furthermore, in order to further improve the regularity of the probe columns in the probe row 10, the probes 111 in the above two probe groups 11 can be arranged in an interleaved manner.

[0055] Furthermore, the two probe groups 11 are correspondingly set to a probe group 11 with a probe size of 2.5 mm and a probe group 11 with a probe size of 2 mm.

[0056] It should be noted that, in this embodiment, the probes 111 in the two probe groups 11 are arranged in an interlaced manner, that is, only one probe 111 in the second probe group can be accommodated between the two probes 111 in the first probe group, which ensures the regularity of the preparation and facilitates the preparation of the probe row 10. In addition, it should be noted that, in this embodiment, the two probe groups 11 are correspondingly set as a probe group 11 with a probe diameter of 2.5 mm and a probe group 11 with a probe diameter of 2 mm, which increases the contact area between the probe 111 and the electrode in the battery cell, ensures that the probe 111 effectively contacts the electrode in the battery cell, and avoids the small diameter of a single probe 111 affecting the accuracy of detection.

[0057] Of course, in other embodiments, the probes in the probe group with smaller probe size in the two probe groups 11 are both staggered with the probes in the probe group with larger probe size in the two probe groups 11, and are also arranged opposite to the probes in the probe group with larger probe size in the two probe groups 11.

[0058] Further, in order to ensure that the probe 111 is in firm contact with the battery cell, reference may be made to Figure 5 , Figure 5 A schematic diagram of the structure of a probe in a solar cell detection structure provided by an embodiment of the utility model. The probe may include a cylinder 112, a spring 113 and a probe head 114;

[0059] One end of the cylinder 112 is a closed end, and the other end is an open end; the probe head 114 is movably inserted in the open end; the spring 113 is built into the cylinder 112 and is arranged between the closed end and the probe head 114 .

[0060] It should be noted that in this embodiment, the probe 111 is composed of a cylinder 112, a spring 113 and a probe head 114, and the probe head 114 is fixed in the cylinder 112 by the spring 113 built into the cylinder 112. When the probe 111 contacts the battery cell, the spring 113 can achieve a soft connection between the probe head 114 and the battery cell to avoid fragmentation of the battery cell.

[0061] Further, in order to ensure that the barrel 112 and the probe head 114 are firmly connected, reference may be made to Figure 6 , Figure 6 A schematic diagram of the structure of another probe in a solar cell detection structure provided by an embodiment of the utility model. The above-mentioned barrel 112 may include a barrel cap and a barrel body; one end of the barrel body is threadedly connected to the barrel cap to form a closed end, and the other end of the barrel body radially extends inward with an annular step 1121 to form an open end;

[0062] The probe head 114 includes an abutting end 1141, a connecting rod 1142, and a contact end 1143 that are connected in sequence; the outer diameter of the abutting end 1141 is greater than the inner diameter of the annular step 1121 but not greater than the inner diameter of the barrel body, and the outer diameter of the connecting rod 1142 is not greater than the inner diameter of the annular step 1121.

[0063] It should be noted that in this embodiment, the outer diameter of the abutting end 1141 is set to be greater than the inner diameter of the annular step 1121 but not greater than the inner diameter of the barrel body, and the outer diameter of the connecting rod 1142 is not greater than the inner diameter of the annular step 1121, so as to use the annular step 1121 provided at the open end of the barrel body to limit the abutting end 1141 within the barrel body, thereby realizing the connection between the barrel body 112 and the probe head 114. In this way, the contact end 1143 can penetrate the barrel body from the closed end side and be exposed outside the open end. Since the outer diameter of the abutting end 1141 is greater than the inner diameter of the annular step 1121 but not greater than the inner diameter of the barrel body, the probe head 114 will not detach from the barrel body 112, and the matching of the probe head 114 and the barrel body 112 can ensure the linearity of the reciprocating movement of the probe head 114, ensure the excellent contact performance of the probe head 114, as well as the disassembly, assembly, and replaceability of the components of the probe 111 itself, saving costs.

[0064] Furthermore, in order to further improve the maintenance efficiency of the probe 111, reference can be made to Figure 7 , Figure 7 which is a partial structural schematic diagram of the probe in a solar cell detection structure provided by an embodiment of the present utility model. The connecting rod 1142 and the contact end 1143 can be detachably connected.

[0065] In this embodiment, the connecting rod 1142 and the contact end 1143 are set to be detachably connected. Since the contact end 1143 is a vulnerable part, when the contact end 1143 is damaged, the contact end 1143 can be directly disassembled for maintenance and replacement, reducing the maintenance cost. At the same time, the size of the contact end 1143 is no longer restricted by the inner diameter of the annular step 1121, and the outer diameter of the contact end 1143 can be greater than the inner diameter of the annular step 1121 because it can be installed on the connecting rod 1142 after the connecting rod 1142 penetrates the barrel body and extends out of the open end. In practical applications, the connecting rod 1142 and the contact end 1143 can be connected by screwing, plugging, or through fasteners.

[0066] Applying the solar cell detection structure provided by the embodiment of the present utility model, it includes a probe row 10, and the probe row 10 includes multiple probe groups 11; each probe group 11 includes multiple probes 111 arranged along a specified direction, and the probe groups 11 are parallel to each other; in at least one probe row 10, the probe diameters of two adjacent probe groups 11 are different. By setting that there are multiple probe groups 11 in the probe row 10 and the probe diameters of at least two adjacent probe groups 11 are different in the present utility model, compared with the probe row 10 formed by probe groups 11 with the same probe diameter, the contact area between the probes 111 in the probe row 10 and the corresponding electrodes can be increased, thereby improving the accuracy of battery detection and reducing the risk of the measured battery being fragmented at the same time.

[0067] In addition, in the embodiment of the present utility model, the probe diameters of the probes 111 in the probe row 10 are set to two different diameters, and the probe diameters of the probes 111 in adjacent probe groups 11 are different. While ensuring the simplicity of preparation, the contact area between the probes 111 in the probe row 10 and the electrodes in the battery chip is ensured. Arranging the multiple probes 111 in each probe group 11 in a straight line can further improve the regularity of the probe 111 arrangement and provide simplicity in preparation; setting the probe row 10 to include two probe groups 11 can balance the preparation difficulty of the solar cell detection structure and the problem of the contact area between the probes 111 and the electrodes in the battery chip; the probes 111 in the two probe groups 11 are arranged in an interleaved manner, which on the one hand ensures the regularity of preparation and on the other hand improves the preparation efficiency of the probe row 10. The two probe groups 11 are correspondingly set to a probe group 11 with a probe diameter of 2.5 mm and a probe group 11 with a probe diameter of 2 mm, avoiding the influence of too small a single probe diameter on the detection accuracy; setting the probe 111 to be composed of a cylinder body 112, a spring 113 and a probe head 114, and setting the probe head 114 to be fixed in the cylinder body 112 through a spring 113 built into the cylinder body 112, can realize the soft connection between the probe head 114 and the battery chip through the spring 113 when the probe 111 contacts the battery chip, avoiding the battery chip from being fragmented; setting the outer diameter size of the abutting end 1141 to be larger than the inner diameter size of the annular step 1121 but not larger than the inner diameter size of the cylinder body, and the outer diameter size of the connecting rod 1142 not to be larger than the inner diameter size of the annular step 1121, so as to use the annular step 1121 provided at the open end of the cylinder body to limit the abutting end 1141 in the cylinder body, thereby realizing the stable connection between the cylinder body 112 and the probe head 114; setting the connecting rod 1142 and the contact end 1143 to be detachably connected reduces the maintenance cost.

[0068] The following introduces the solar cell detection device provided by the present utility model. Referring to the above-mentioned solar cell detection structure, it may specifically include the following structures:

[0069] A first conductive structure electrically connected to the first polar electrode of the battery cell, and a second conductive structure electrically connected to the second polar electrode of the battery cell;

[0070] The first conductive structure and / or the second conductive structure is the solar cell detection structure as described above.

[0071] It should be noted that in this embodiment, the first conductive structure and the second conductive structure are electrically connected to the corresponding electrodes of the battery cell, and at least one of the first conductive structure and the second conductive structure is set as the solar cell detection structure as described above to improve the detection efficiency.

[0072] Further, in order to improve the preparation efficiency of the battery detection structure and further increase the contact area with the electrodes in the battery cell, the first conductive structure can be set as the probe row in the solar cell detection structure as described above;

[0073] The second conductive structure includes a metal strip electrically connected to the second polar electrode of the battery cell.

[0074] It should be noted that in this embodiment, the second conductive structure is set as a structure including a metal strip, and there is no need to set multiple probes arranged in a specified manner, which improves the preparation convenience.

[0075] Further, reference can be made to Figure 8 , Figure 8 FIG. is a schematic structural diagram of a composite conductive structure in a solar cell detection structure provided by an embodiment of the present invention. In order to improve the accuracy of battery detection while ensuring the convenience of contact between the metal strip 12 and the battery cell, the second conductive structure can be set as a composite conductive structure 20 formed by a probe 111 and a metal strip 12.

[0076] It should be noted that in this embodiment, the second conductive structure is set as a structure formed by combining a probe 111 and a metal strip 12, which can take into account the advantages of connecting the probe row and the metal strip 12. The probe 111 provided in the second conductive structure of this embodiment can be arranged in a close-packed manner as set in the above embodiment. This embodiment does not limit the specific combination manner of the probe 111 and the metal strip 12. For example, the two can be arranged alternately, or the two can be arranged in other ways.

[0077] Further, in a feasible embodiment, the second conductive structure can be set as a copper metal strip with a gold-plated surface electrically connected to the second polar electrode of the battery cell.

[0078] It should be noted that in this embodiment, by setting the metal strip 12 in the second conductive structure as a copper metal strip with a gold-plated surface, the conductivity of the metal strip 12 can be improved while taking into account the preparation cost.

[0079] Further, in order to further increase the contact area between the probes 111 in the probe row 10 and the corresponding electrodes, improve the accuracy of battery detection, and at the same time reduce the risk of debris in the battery under test, both the first conductive structure and the second conductive structure can be set as closely packed probe rows.

[0080] It should be noted that in this embodiment, both the first conductive structure and the second conductive structure are set as probe rows formed by closely packing the probe group 11, which further improves the detection accuracy and avoids the risk of the battery being crushed by the probes 111 during detection.

[0081] Applying the solar cell detection device provided by the embodiment of the present invention, including a first conductive structure electrically connected to the first-polarity electrode of the battery cell and a second conductive structure electrically connected to the second-polarity electrode of the battery cell, the first conductive structure and / or the second conductive structure is the solar cell detection structure as described above. By setting at least one of the first conductive structure and the second conductive structure as the solar cell detection structure as described above, the detection efficiency can be improved. In addition, in the embodiment of the present invention, by setting the second conductive structure as a structure including the metal strip 12, it is not necessary to arrange a plurality of probes 111 arranged in a specified manner, which improves the preparation convenience; by setting the second conductive structure as a structure formed by combining the probes 111 and the metal strip 12, the advantages of electrical connection between the probe row and the metal strip 12 can be taken into account.

[0082] In an embodiment of a specific application scenario, the above solar cell detection device may specifically include the following structures:

[0083] A first conductive structure electrically connected to the first-polarity electrode of the battery cell and a second conductive structure electrically connected to the second-polarity electrode of the battery cell;

[0084] The first conductive structure includes a probe row formed by two probe groups; each probe group includes a plurality of probes arranged in a straight line, and the probe groups are parallel to each other; the probes in the two probe groups are arranged in an interlaced manner; the two probe groups are correspondingly set as a probe group with a probe diameter of 2.5 mm and a probe group with a probe diameter of 2 mm;

[0085] The second conductive structure is a copper metal strip with a gold-plated surface electrically connected to the second-polarity electrode of the battery cell;

[0086] Adjacent probe groups are arranged in a closely packed manner to form a closely packed probe row;

[0087] The probe includes a cylinder body, a spring and a probe head; wherein, one end of the cylinder body is a closed end and the other end is an open end; the probe head is movably inserted into the open end; the spring is disposed inside the cylinder body and is arranged between the closed end and the probe head; the cylinder body includes a cylinder cap and a cylinder body; one end of the cylinder body is threadedly connected to the cylinder cap to form the closed end, and the other end of the cylinder body extends radially inward to form an annular step to form the open end; the probe head includes an abutting end, a connecting rod and a contact end which are connected in sequence; the outer diameter of the abutting end is larger than the inner diameter of the annular step but not larger than the inner diameter of the cylinder body, and the outer diameter of the connecting rod is not larger than the inner diameter of the annular step; the connecting rod is detachably connected to the contact end.

[0088] In the description of the present specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0089] In addition, it should be noted that in this text, relationships such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant is intended to cover non-exclusive inclusion.

[0090] The above has introduced in detail a solar cell detection structure and a solar cell detection device provided by the present utility model. Specific examples are used in this text to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the structure and core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A solar cell detection structure, characterized in that: include: A probe row, wherein the probe row includes a plurality of probe groups; each of the probe groups includes a plurality of probes arranged along a specified direction, and the probe groups are parallel to each other; In at least one of the probe rows, probes of two adjacent probe groups have different diameters.

2. The solar cell detection structure according to claim 1, characterized in that: At least one of the probe rows includes probe groups with two probe diameters, and the probe diameters of adjacent probe groups are different; and / or, The plurality of probes in each probe group are arranged along a straight line.

3. The solar cell detection structure according to claim 1, characterized in that: The row of probes with different probe sizes of adjacent probe groups includes two probe groups.

4. The solar cell detection structure according to claim 3, characterized in that: The probes in the two probe groups are arranged alternately with each other; and / or, The two probe groups are respectively configured as a probe group with a probe diameter of 2.5 mm and a probe group with a probe diameter of 2 mm.

5. The solar cell detection structure according to any one of claims 1 to 4, characterized in that: The probe comprises a cylinder, a spring and a probe head; One end of the cylinder is a closed end, and the other end is an open end; the probe head is movably inserted in the open end; the spring is built into the cylinder and arranged between the closed end and the probe head.

6. The solar cell detection structure according to claim 5, characterized in that: The cylinder body comprises a cylinder cap and a cylinder body; one end of the cylinder body is threadedly connected with the cylinder cap to form the closed end, and the other end of the cylinder body radially extends inwardly to form an annular step to form the open end; The probe head includes an abutment end, a connecting rod and a contact end connected in sequence; the outer diameter of the abutment end is larger than the inner diameter of the annular step but not larger than the inner diameter of the barrel, and the outer diameter of the connecting rod is not larger than the inner diameter of the annular step.

7. The solar cell detection structure according to claim 6, characterized in that: The connecting rod is detachably connected to the contact end.

8. A solar cell detection device, characterized in that: include: A first conductive structure connected to a first polarity electrode of the battery cell, and a second conductive structure connected to a second polarity electrode of the battery cell; The first conductive structure and / or the second conductive structure is the solar cell detection structure according to any one of claims 1 to 7.

9. The solar cell detection device according to claim 8, characterized in that: The first conductive structure is a probe row in the solar cell detection structure according to any one of claims 1 to 7; The second conductive structure includes a metal strip connected to the second polarity electrode of the battery cell.

10. The solar cell detection device according to claim 9, characterized in that: The second conductive structure is a composite conductive structure formed by the probe and the metal strip.

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