Silk thread structure for battery piece detection, silk thread detection device and equipment
Through the structure of the flexible mounting strip and the wire, the problem of inaccurate tension control in the cell detection of the wire device is solved, and the soft and hard contact between the wire and the probe is realized, reducing the fragmentation rate of the cell and improving the test effect.
Patent Information
- Application Number
- CN202422379647.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the prior art, the wire device cannot accurately control the tension during cell detection, resulting in the wire being unable to fit tightly, and the test effect is poor.
A structure is adopted where a flexible mounting strip is combined with a wire. The length of the flexible mounting strip corresponds to the wire. The wire is embedded on the flexible mounting strip along its length direction and is fixed on the wire detection device to ensure that the wire can be bent according to the contact shape and avoid too tight or too loose tension.
The soft and hard contact between the wire and the probe is achieved, reducing the debris rate of the battery, improving the test effect, and reducing the occlusion area of the wire, improving the detection efficiency.
Smart Images
Figure CN223157043U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of solar cell testing, and particularly to a wire structure, a wire detection device and equipment for cell detection. Background Art
[0002] In recent years, with the development of solar cell production technology, the application of photovoltaic power generation has become increasingly widespread and has become an important energy source for power supply. In order to improve the current collection of the cell, reduce the series resistance, and improve the cell performance, while reducing the silver paste cost, generally, the cell is printed without the main grid pattern, which requires more fine grids than the conventional multi-main grid, so as to collect more current, obtain more accurate electrical performance parameters, and obtain a clearer EL image of the cell.
[0003] The electrical performance test of solar cells is generally completed by the cooperation of a wire device and a probe device. In the related art, in the wire device used for the electrical performance test of cells, fixed support components are generally provided at both ends of the wire to tension the wire. However, during long-term use, the tension of the wire cannot be accurately controlled, which easily leads to the wire not being closely attached and poor test results. Summary of the Utility Model
[0004] This application provides a wire structure, a wire detection device and equipment for cell detection to solve the technical problem that the wire device in the related art easily causes the wire not to be closely attached and poor test results.
[0005] To solve the above problems, this application provides a wire structure for cell detection, and the wire structure includes:
[0006] Wire;
[0007] A flexible mounting strip, the length of the flexible mounting strip corresponding to the length of the wire, the wire being embedded in the flexible mounting strip along the length direction of the flexible mounting strip, and the flexible mounting strip being used to fix the wire structure to the wire detection device.
[0008] In some embodiments, the wire is fused and embedded in the flexible mounting strip.
[0009] In some embodiments, in the radial direction along the cross-section of the wire, the part of the wire embedded in the flexible mounting strip accounts for 1 / 3 - 2 / 3 of the wire.
[0010] In some embodiments, the flexible mounting strip is made of EVA material or PVB material.
[0011] This application also provides a wire detection device for cell detection, and the wire detection device includes:
[0012] Carrier board;
[0013] The wire assembly includes a plurality of wire structures for battery cell detection as described above, and the side of the flexible mounting strip facing away from the wire is fixed on the carrier plate.
[0014] In some embodiments, a part of the plurality of wire structures are configured as first wire structures for detecting current, and another part of the wire structures are configured as second wire structures for detecting voltage; a plurality of the first wire structures are equally spaced on the carrier plate.
[0015] In some embodiments, one second wire structure is provided every 2 - 7 first wire structures.
[0016] In some embodiments, the second wire structure is disposed between two adjacent first wire structures.
[0017] In some embodiments, the second wire structure is close to one of two adjacent first wire structures.
[0018] The present application also provides a device for battery cell detection, the device for battery cell detection includes a battery cell probe detection device and a wire detection device for battery cell detection as described above, and the probes in the battery cell probe detection device are disposed opposite to the wire assembly.
[0019] The beneficial effects of the embodiments of the present application are as follows: The wire structure provided by the present application includes a wire and a flexible mounting strip. The length of the flexible mounting strip corresponds to the length of the wire, and the wire is embedded in the flexible mounting strip along the length direction of the flexible mounting strip. At the same time, the flexible mounting strip can fix the wire structure on the wire detection device. In this way, by installing the entire wire on the wire detection device in a manner of being embedded in the flexible mounting strip, when detecting the battery cell, the wire can make corresponding bends according to the contact shape to adapt to the shape of the contact, effectively avoiding the situation of being unable to closely fit due to too tight or too loose tension, and ensuring the test effect of the battery cell. Moreover, by embedding the wire in the flexible mounting strip, when the wire and the probe cooperate to detect the battery cell, it is equivalent to a soft - hard contact method on both sides of the battery cell. Compared with the hard contact on both sides of the battery cell, the fragmentation rate of the battery cell is effectively reduced.
[0020] In addition, when the wire structure is applied to the wire detection device, each wire in the plurality of wires is arranged on the carrier plate in the form of a wire assembly, and each wire corresponds to a flexible mounting strip. It is equivalent to that the flexible mounting strip is distributed only at the position where the wires are distributed on the carrier plate, maximizing the minimum shielding of the wires. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings. Among them:
[0022] Figure 1 is a schematic structural diagram of the wire structure provided by an embodiment of the present application applied to a wire detection device;
[0023] Figure 2 is a schematic structural diagram of the wire structure provided by an embodiment of the present application;
[0024] Figure 3 is a schematic structural diagram of the cooperation between the first wire structure and the second wire structure in the wire detection device provided by an embodiment of the present application;
[0025] Figure 4 is a schematic structural diagram of the device for detecting solar cells provided by an embodiment of the present application.
[0026] In the figure: 10, wire detection device; 11, carrier board; 12, wire structure; 12a, first wire structure; 12b, second wire structure; 13, wire; 14, flexible mounting strip; 15, insulating partition; 20, solar cell probe detection device; 100, device for detecting solar cells; 30, solar cell supporting device; 31, rotating seat; 32, solar cell bracket. Detailed implementation manners
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. In addition, it should be noted that for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.
[0028] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.
[0029] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0030] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.
[0031] Referring to
[0032] Please refer toFigure 1 and Figure 2 , this application provides a wire structure 12 for battery cell detection. The wire structure 12 includes a wire 13 and a flexible mounting strip 14. The length of the flexible mounting strip 14 corresponds to the length of the wire. The wire is embedded in the flexible mounting strip 14 along the length direction of the flexible mounting strip 14, and the flexible mounting strip 14 is used to fix the wire structure 12 to the wire detection device 10.
[0033] Wherein the wire 13 is a conductive metal wire. For example, it can be a silver wire or a copper wire, but is not limited thereto. The flexible mounting strip 14 has a certain flexibility. For example, in some embodiments, the flexible mounting strip 14 can be made of EVA material or PVB material, but is not limited thereto.
[0034] The length of the flexible mounting strip 14 corresponds to the length of the wire 13, which can be understood as that the length of the flexible mounting strip 14 is the same as the length of the wire 13, so that the whole wire 13 can be embedded in the flexible mounting strip 14. The wire 16 is embedded in the flexible mounting strip 14 along the length direction of the flexible mounting strip 14, that is, the central axis of the wire 13 in the wire assembly is parallel to the central axis of the flexible mounting strip 14. The cross-sectional shape of the wire 13 is generally circular. This application does not limit the cross-sectional shape of the flexible mounting strip 14. For example, the flexible mounting strip 14 can be a long strip structure with a rectangular, trapezoidal or regular hexagonal cross-sectional shape, but is not limited thereto. In the embodiments of this application, the flexible mounting strip 14 with a rectangular cross-sectional shape is taken as an example for illustration. The wire 13 is embedded in one side surface of the flexible mounting strip 14. It should be noted that when the wire detection device 10 is in use, the wire 13 needs to be in contact with the battery cell. It can be understood that after the wire 13 is embedded in one side of the flexible mounting strip 14, the wire 13 needs to protrude from the surface of the flexible mounting strip 14. In some embodiments, in the radial direction of the cross-section of the wire 13, the part of the wire 13 embedded in the flexible mounting strip 14 can account for 1 / 3 - 2 / 3 of the wire, for example, it can be 1 / 3, 1 / 2 or 2 / 3, but is not limited thereto. For example, when the part of the wire 13 embedded in the flexible mounting strip 14 is 1 / 2, that is, half of the cross-section of the wire 13 is embedded in the flexible mounting strip 14, which can ensure the stability of the wire 13 installed in the flexible mounting strip 14 and also ensure that the wire 13 can be in full contact with the battery cell.
[0035] The wire 13 is embedded in the flexible mounting strip 14. In some embodiments, the wire 13 can be melt-embedded in the flexible mounting strip 14. For example, by heating the flexible mounting strip 14 to make it melt, the wire 13 can be embedded in one side surface of the flexible mounting strip 14. In some embodiments, the wire 13 can be melt-embedded in the flexible mounting strip 14 by lamination heating.
[0036] When the wire structure 12 provided in the above embodiments of the present application is used in a wire detection device 10, it cooperates with the cell probe detection device 20 below the cell to complete the electrical performance test of the cell. Since the entire wire 13 is embedded in the flexible mounting strip 14, the wire 13 can be bent correspondingly according to the shape of the contact, so as to be closely attached to ensure the test effect. At the same time, when the probe in the cell probe detection device 20 detects the cell, the two sides of the cell are equivalent to having a soft contact with the wire 13 and a hard contact with the probe. In this way, compared with the situation where both sides of the cell have a hard contact, the fragmentation rate of the cell is effectively reduced.
[0037] In some embodiments, the present application further provides a wire detection device 10 for cell detection, which is used to cooperate with the cell probe detection device 20 to perform electrical performance tests on the cell. The wire detection device 10 provided in the present application includes a carrier plate 11 and a wire assembly, and the wire assembly includes a plurality of wire structures 12. The plurality of wire structures 12 are arranged and distributed on one surface of the carrier plate 11. At the same time, the side of the flexible mounting strip 14 in the wire structure 12 facing away from the wire is fixed to the carrier plate 11.
[0038] The carrier plate 11 in the wire detection device 10 is a transparent glass plate, but it is not limited thereto. In the embodiments of the present application, the carrier plate 11 is taken as an example of a transparent glass plate for illustration. The wire detection device 10 may further include a mounting frame, and the carrier plate 11 is mounted on the mounting frame.
[0039] The plurality of wire structures 12 in the wire detection device 10 are arranged and distributed on one surface of the carrier plate 11. It can be understood that the plurality of wire structures 12 are arranged in a direction perpendicular to the length of the wire. Since there is generally a certain distance between adjacent wires in the wire detection device 10, and the diameter of the wire is generally 0.3 mm, and the wire is embedded in the flexible mounting strip 14, it can be understood that the width of the flexible mounting strip 14 is slightly larger than the diameter of the wire. In this way, there will also be a certain distance between the plurality of wire structures 12 on the carrier plate 11, effectively reducing the occlusion of the wire 13 compared to covering the entire carrier plate 11 with a film. For example, for an 182 mm cell, the 0.3 mm wire only occupies less than 6% after being attached to the flexible mounting strip 14; while for a 210 mm cell, it only occupies less than 5%. Compared with the conventional double-row probes or silver bars with a width of not less than 3 mm, taking an 182 mm cell as an example, it will occupy not less than 39%. It can be seen that the wire detection device 10 provided in the present application effectively reduces the occlusion ratio of the wire.
[0040] A number of wire structures 12 cooperate with the probes in the cell probe detection device 20 to achieve the detection of the voltage and current of the cell. Generally, a part of the wire structures 12 in the number of wire structures 12 are configured as the first wire structure 12a, and another part of the wire structures 12 are configured as the second wire structure 12b. In some embodiments, a number of the first wire structures 12a on the carrier plate 11 are evenly distributed on the carrier plate 11. The number of the second wire structures 12b provided in the number of wire structures 12 is less than the number of the first wire structures 12a, such as Figure 1 As shown, the specific arrangement of a number of the first wire structures 12a and a number of the second wire structures 12b can be: one second wire structure 12b is provided every 2-7 of the first wire structures 12a. For example, the interval can be 2, 3, 4, 5, 6 or 7. In some embodiments, at the same time, the second wire structure 12b can be arranged between two adjacent first wire structures 12a, and the second wire structure 12b is close to one of the two adjacent first wire structures 12a. In the embodiments of the present application, an example is given that one second wire structure 12b is provided every two first wire structures 12a, such as Figure 1 As shown.
[0041] Such as Figure 3 As shown, since insulation needs to be provided between the second wire structure 12b and the first wire structure 12a, an insulation partition 15 can be provided between the second wire structure 12b and the first wire structure 12a, and the insulation partition 15 is made of an insulating material such as rubber or plastic.
[0042] In the wire detection device 10 for cell detection provided in the above embodiments of the present application, each wire 13 in the number of wires is arranged on the carrier plate 11 in the form of a wire structure 12, and each wire 13 corresponds to a flexible mounting strip 14. It is equivalent to that on the carrier plate 11, the flexible mounting strips 14 are only distributed at the positions where the wires 13 are distributed, and there is no light-shielding area blocking between adjacent wire structures 12, effectively maximizing the minimum shielding of the wires 13.
[0043] Such as Figure 4 As shown, in some other embodiments, the present application further provides a device 100 for cell detection. The device 100 for cell detection includes a cell probe detection device 20 and the wire detection device 10 for cell detection in any of the above embodiments. And the probes in the cell probe detection device in the device 100 for cell detection are arranged opposite to the wire assembly.
[0044] In the device 100 for cell detection, the wire detection device 10 and the cell probe detection device 20 cooperate with each other up and down to complete the electrical performance test of the cell. It can be understood that the device 100 for cell detection further includes a cell support device 30, such asFigure 4 As shown in Figure 4 , the cell carrier device 30 includes a rotating base 31 and a plurality of cell brackets 32 arranged circumferentially on the rotating base 31. For example, the number of cell brackets 32 circumferentially arranged on the rotating base 31 can be two or four, but is not limited thereto. In the embodiment of the present application, taking the example that four cell brackets 32 are arranged circumferentially on the rotating base 31, correspondingly, the wire detection device 10 is arranged above one of the cell brackets 32, and the cell probe detection device 20 is arranged below the corresponding cell bracket 32. The wire detection device 10 and the cell probe detection device 20 constitute an electrical performance test position for cell offset. The rotating base 31 drives the cells on each cell bracket 32 to pass through the electrical performance test position in sequence for testing by rotation. The embodiment of the present application does not limit the specific structure of the cell probe detection device 20. Generally, the cell probe detection device 20 is provided with a cell test probe and a voltage test probe 23, so as to cooperate with the wire detection device 10 to complete the electrical performance test of the cell.
[0045] The device 100 for cell detection provided by the present application adopts all the technical solutions of all embodiments of the wire detection device 10. Therefore, it has at least all the beneficial effects brought by the technical solutions of the embodiments of the wire detection device 10, which will not be elaborated herein one by one. In addition, when the voltage test probe 23 in the cell probe detection device 20 of the device 100 for cell detection provided by the present application is adjustable and arranged in the support frame 21, it can ensure that the device 100 for cell detection has a better test effect.
[0046] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.
Claims
1. A silk thread structure for battery cell detection, characterized in that, The wire structure includes: A wire; A flexible mounting strip, the length of the flexible mounting strip corresponding to the length of the wire, the wire being embedded in the flexible mounting strip along the length direction of the flexible mounting strip, and the flexible mounting strip being used to fix the wire structure to a wire detection device.
2. The wire structure for cell detection according to claim 1, characterized in that, The wire is melt-embedded in the flexible mounting strip.
3. The silk thread structure for cell detection according to any one of claims 1-2, characterized in that, In the radial direction along the cross-section of the wire, the part of the wire embedded in the flexible mounting strip accounts for 1 / 3 - 2 / 3 of the wire.
4. The wire structure for cell detection according to claim 1, characterized in that, The flexible mounting strip is made of EVA material or PVB material.
5. A silk thread detection device for cell detection, characterized in that, The wire detection device includes: A carrier plate; A wire assembly, including a plurality of wire structures for battery cell detection according to any one of claims 1 - 4, and the side of the flexible mounting strip facing away from the wire is fixed to the carrier plate.
6. The wire detection device for cell detection according to claim 5, characterized in that, Among a plurality of the wire structures, a part of the wire structures are configured as first wire structures for detecting current, and another part of the wire structures are configured as second wire structures for detecting voltage; a plurality of the first wire structures are equally spaced on the carrier plate.
7. The wire detection device for cell detection according to claim 6, wherein, One second wire structure is arranged every 2 - 7 first wire structures.
8. The wire detection device for cell detection according to claim 7, characterized in that, The second wire structure is arranged between two adjacent first wire structures.
9. The wire detection device for cell detection according to claim 8, characterized in that, The second wire structure is close to one of two adjacent first wire structures.
10. An apparatus for detecting battery cells, characterized in that, The device for battery cell detection includes a battery cell probe detection device and a wire detection device for battery cell detection according to any one of claims 5 - 9, and the probes in the battery cell probe detection device are arranged opposite to the wire assembly.