Upper detection mechanism and testing device

Abstract

The utility model discloses a kind of upper detection mechanism and test device. Upper detection mechanism is used to detect battery piece, the surface of battery piece is equipped with multiple grid lines, upper detection mechanism includes mounting bracket, conducting component and rotating component, conducting component includes multiple conducting wires, each conducting wire is respectively with each grid line corresponding abutment, and conducting wire extends along the length direction of grid line, to make battery piece energization;Rotating component is set to mounting bracket, rotating component is respectively connected with multiple conducting wires, rotating component is configured as driving multiple conducting wires rotate around the axis of conducting wire, to make the different surface of conducting wire and grid line abutment. The upper detection mechanism provided in the embodiment of the application rotates conducting wire by rotating component, so that conducting wire can be rotated to the un-worn side to contact battery piece along the axis, to ensure that the test result of test device to battery piece.

Description

Technical Field

[0001] This application relates to the field of battery testing equipment technology, and in particular to an upper detection mechanism and testing device. Background Technology

[0002] In the photovoltaic cell production process, IV testing of the cells is a crucial step used to evaluate their performance and quality. Traditional IV testing methods primarily employ a one-time gold wire contact with the cell's grid lines to achieve conductivity and complete the test.

[0003] However, wear or deformation of the gold wire surface after testing can affect the reliability of its contact with the battery grid lines. When a worn gold wire contacts the battery grid lines, the contact resistance increases, leading to uneven current conduction and thus deviations in test results, affecting the evaluation of battery cell performance. Furthermore, worn gold wires may also experience poor contact with the battery grid lines during testing, causing unstable or interrupted test signals and frequent test anomalies. To ensure testing effectiveness, worn gold wires need to be replaced, increasing production costs. Utility Model Content

[0004] This utility model discloses an upper detection mechanism and a testing device. The upper detection mechanism drives the conductive wire to rotate through a rotating component, so that the conductive wire can rotate along the axis to contact the battery cell on the unworn side, thus ensuring the test results of the battery cell by the testing device.

[0005] To achieve the above objectives, the first aspect of this utility model discloses an upper detection mechanism for detecting battery cells, wherein the surface of the battery cell is provided with multiple grid lines, and the upper detection mechanism includes:

[0006] Mounting rack;

[0007] A conductive component includes multiple conductive wires, each conductive wire abutting against each of the grid lines, and the conductive wires extending along the length of the grid lines to energize the battery cell;

[0008] A rotating assembly is disposed on the mounting bracket and is connected to a plurality of conductive wires respectively. The rotating assembly is configured to drive the plurality of conductive wires to rotate around the axis of the conductive wires so that different surfaces of the conductive wires abut against the grid lines.

[0009] As an optional implementation, the rotating assembly includes: a plurality of first rotating members, each of which is connected to a plurality of conductive lines; and a driving member, which is connected to the plurality of first rotating members and configured to drive the plurality of first rotating members to rotate circumferentially along the conductive lines.

[0010] As an optional implementation, the upper detection mechanism further includes: multiple indexing components, each of which is connected to a plurality of the first rotating members, and the indexing components are used to control the first rotating members to rotate according to a preset rotation angle.

[0011] As an optional implementation, the indexing assembly further includes: an indexing base and an indexing disk. The indexing base is disposed on the mounting frame. The outer periphery of the indexing disk is provided with indexing teeth and / or indexing grooves for rotary indexing of the main shaft along the circumferential direction. A corresponding locking member is mounted on the indexing base. The locking member has a locking head for locking and releasing the indexing disk. The shape of the locking head is complementary to the shape of the indexing teeth or the indexing disk.

[0012] As an optional implementation, the number of indexing teeth and / or indexing slots is three, and the distance between each indexing tooth and / or indexing slot is equal.

[0013] As an optional implementation, the rotating assembly further includes: a plurality of second rotating members, each of which is arranged in a one-to-one correspondence with a first rotating member and is respectively connected to both ends of a conductive wire; the second rotating members are connected to the driving member and are configured to rotate around the axis of the conductive wire under the drive of the driving member.

[0014] As an optional implementation, the upper detection mechanism further includes: a synchronous shaft connected to the driving member, the synchronous shaft being configured to rotate circumferentially along the conductive wire under the drive of the driving member; and a first synchronous belt sleeved on the synchronous shaft and the plurality of first rotating members, the first synchronous belt being configured to rotate with the synchronous shaft so that the first synchronous belt drives the plurality of first rotating members to rotate synchronously.

[0015] As an optional implementation, the conductive component further includes: a plurality of tensioning members, which are respectively disposed at both ends of the plurality of conductive wires, and the tensioning members are used to control the tension of the conductive wires.

[0016] The second aspect of this utility model discloses a testing device for testing a battery cell. The surface of the battery cell is provided with multiple grid lines. The testing device includes: an upper testing mechanism as described in the first aspect of this utility model; a support bracket for supporting and fixing the battery cell, the support bracket being located below the upper testing mechanism; and a pressing drive assembly connected to the upper testing mechanism, the pressing drive assembly being capable of driving the upper testing mechanism to move downward in a vertical direction to press the grid lines on the front side of the battery cell, so that each conductive wire contacts each grid line.

[0017] As an optional implementation, the testing device further includes a pressure sensor connected to the rotating assembly of the upper detection mechanism, the pressure sensor being used to detect the pressure between the upper detection mechanism and the battery cell.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] The upper detection mechanism provided in this application embodiment can rotate the conductive wire around its axis via a rotating component when the conductive wire surface is worn or deformed, switching to the unworn surface to contact the solar cell and continue testing. This dynamic adjustment mechanism extends the service life of the conductive wire, reduces cost increases and equipment downtime caused by frequent conductive wire replacements, ensures the continuity and stability of the testing process, avoids production interruptions caused by test anomalies, improves the efficiency and quality of photovoltaic cell IV testing, and reduces production costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the upper detection mechanism provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the upper detection mechanism for detecting battery cells provided in an embodiment of this application;

[0023] Figure 3 This is one of the schematic diagrams illustrating the wear process of conductive wires provided in the embodiments of this application;

[0024] Figure 4 This is the second schematic diagram of the conductive wire wear process provided in the embodiments of this application;

[0025] Figure 5 This is the third schematic diagram of the conductive wire wear process provided in the embodiments of this application;

[0026] Figure 6 This is a schematic diagram of the test device provided in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Upper detection mechanism; 101 - Battery cell; 1 - Mounting bracket; 2 - Conductive component; 21 - Conductive wire; 22 - Tensioning component; 3 - Rotating component; 31 - First rotating component; 32 - Driving component; 33 - Second rotating component; 41 - Synchronous shaft; 42 - First synchronous belt; 43 - Second synchronous belt; 200 - Testing device; 201 - Lower detection mechanism; 202 - Pressing drive component; 203 - Pressure sensor. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In this application, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0034] In the photovoltaic cell production process, IV testing of the cells is a crucial step. IV testing measures the current-voltage characteristics of the cells to evaluate their performance indicators, such as open-circuit voltage, short-circuit current, and conversion efficiency. These indicators directly reflect the electrical performance of the cells and form the basis for subsequent module production.

[0035] However, wear or deformation of the gold wire surface after testing can trigger a series of serious problems, profoundly impacting the entire production process. When the gold wire contacts the cell grid lines, the worn oxide layer or deformed areas on the gold wire surface increase the contact resistance at the contact point. Normally, the gold wire should be in close contact with the cell grid lines to ensure uniform current conduction, thereby accurately measuring the cell's current-voltage characteristic curve. However, increased contact resistance leads to additional heat loss during current transmission, causing the actual current delivered to the cell to deviate from the expected value. Uneven current conduction further deviates from the test results, affecting the accurate evaluation of the cell's performance.

[0036] Furthermore, worn gold wires may experience poor contact with the cell grid lines during testing. In practice, silicon wafers continuously flow to the testing station, requiring frequent pressing and separation of the gold wires. During this repeated process, the contact stability between the worn gold wires and the cell grid lines decreases. At certain moments, the gold wires may fail to form an effective connection with the grid lines, leading to unstable or interrupted test signals. This not only results in single test failures but may also cause frequent test anomalies, affecting the stability of the entire production process. To ensure testing effectiveness, worn gold wires need to be replaced with new ones. However, gold wires themselves are expensive, and frequent replacements undoubtedly increase production costs, placing a significant economic burden on the company.

[0037] In view of this, embodiments of this application disclose an upper detection mechanism and a testing device. The upper detection mechanism drives the conductive wire to rotate through a rotating component, so that the conductive wire can rotate along the axis to contact the battery cell on the unworn side, thus ensuring the test results of the battery cell by the testing device.

[0038] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0039] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the upper detection mechanism 100 provided in the embodiments of this application. Figure 2This is a schematic diagram of the upper detection mechanism 100 for detecting a battery cell 101 provided in an embodiment of this application. The first aspect of this utility model discloses an upper detection mechanism 100 for detecting a battery cell 101. The surface of the battery cell 101 is provided with multiple grid lines. The upper detection mechanism 100 includes: a mounting frame 1; a conductive component 2, which includes multiple conductive wires 21, each conductive wire 21 correspondingly abutting against each grid line, and the conductive wires 21 extending along the length direction of the grid lines to energize the battery cell 101; and a rotating component 3, which is disposed on the mounting frame 1 and connected to the multiple conductive wires 21. The rotating component 3 is configured to drive the multiple conductive wires 21 to rotate around the axis of the conductive wires 21, so that different surfaces of the conductive wires 21 abut against the grid lines.

[0040] Mounting bracket 1 serves as the basic support structure for the upper detection mechanism 100, providing a stable mounting platform for the conductive component 2 and the rotating component 3. The stable structure of mounting bracket 1 ensures the accuracy and reliability of the entire detection mechanism during operation, avoiding detection errors caused by unstable support.

[0041] Optionally, the mounting bracket 1 may be equipped with a structure that allows for adjustable height and position, such as a slide rail slider structure or a lead screw nut structure, which facilitates the installation and adjustment of other components, promotes the integration and modularization of the entire upper detection mechanism 100, and improves the maintainability and scalability of the testing device 200.

[0042] The conductive component 2 includes multiple conductive lines 21 that respectively abut against multiple grid lines on the surface of the battery cell 101 and extend along the length of the grid lines, thereby enabling the battery cell 101 to be effectively energized.

[0043] Specifically, the corresponding contact between multiple conductive lines 21 and multiple grid lines ensures that the current can be evenly distributed in various areas of the solar cell 101, improving the accuracy of the test results and avoiding local measurement errors caused by uneven current distribution.

[0044] Furthermore, the extension structure of the conductive wire 21 along the length of the grid line maximizes the contact area between the conductive wire 21 and the grid line, reducing the contact resistance and facilitating more accurate measurement of the electrical performance parameters of the battery cell 101, such as current and voltage.

[0045] Alternatively, the conductive wire 21 can be gold wire, which has high chemical stability, is not easily oxidized or corroded, and can maintain good conductivity even after long-term use. The conductive wire 21 can also be copper wire, which has excellent conductivity and low resistivity, effectively conducting current and ensuring test accuracy. The conductive wire 21 can also be silver wire, which has very low resistivity, providing more accurate test results, and silver also has good chemical stability, making it less prone to oxidation.

[0046] The upper detection mechanism 100 also includes a rotating component 3, which is mounted on the mounting frame 1 and connected to multiple conductive wires 21. The function of the rotating component 3 is to drive the multiple conductive wires 21 to rotate around their axes. The rotating component 3 enables the multiple uses of the conductive wires 21.

[0047] It is understandable that, driven by the rotating component 3, the conductive wire 21 can use different surfaces to contact the grid wire, thereby avoiding poor contact problems caused by wear or deformation of the conductive wire 21 surface. Compared with the traditional fixed conductive wire 21, the introduction of the rotating component 3 extends the service life of the conductive wire 21 and reduces the production costs and equipment downtime caused by the replacement of the conductive wire 21.

[0048] Meanwhile, since the rotating component 3 can drive multiple conductive wires 21 to rotate around the axis of the conductive wires 21, the unworn surface of the conductive wires 21 can be switched for testing, ensuring the continuity and stability of the testing process and improving the efficiency and reliability of the entire production process.

[0049] In actual use, when the battery cell 101 arrives at the testing station, the upper testing mechanism 100 begins operation. The conductive wire 21 of the conductive component 2 is pressed down by the pressing drive component 202 of the testing device 200, making contact with the grid lines of the battery cell 101 to form a current path, and initiating the acquisition and testing of parameters such as current and voltage. When a certain degree of wear or deformation is detected on the surface of the conductive wire 21, affecting the stability or accuracy of the test results, the rotating component 3 is activated, rotating the conductive wire 21 around its axis by a certain angle, causing the unworn surface of the conductive wire 21 to re-apply to the grid lines, continuing the testing process. Through this dynamic rotation switching mechanism, the conductive wire 21 can maintain good contact performance during multiple tests, ensuring the continuity and reliability of IV testing.

[0050] Please see Figure 3 , Figure 3 This is one of the schematic diagrams illustrating the wear process of the conductive wire 21 provided in this application embodiment. When initially used, the conductive wire 21 contacts the grid lines of the battery cell 101 via region A. Please refer to... Figure 4 , Figure 4 This is a second schematic diagram illustrating the wear process of the conductive wire 21 provided in this application embodiment. After the conductive wire 21 in region A is worn, the rotating component 3 is activated, causing the conductive wire 21 to rotate around its axis. At this time, region B is used to contact the grid lines of the battery cell 101 for testing. Similarly, please refer to... Figure 5 , Figure 5This is the third schematic diagram of the wear process of the conductive wire 21 provided in the embodiment of this application. When wear also occurs on the surface of the conductive wire 21 in region B, the rotating component 3 can drive the conductive wire 21 to rotate and use the surface of the conductive wire 21 in region C to contact the gate wire for testing.

[0051] Thus, the upper detection mechanism 100 provided in this embodiment can rotate the conductive wire 21 around its axis via the rotating component 3 when the surface of the conductive wire 21 is worn or deformed, switching to contact the unworn surface with the solar cell 101 to continue testing the solar cell 101. This dynamic adjustment mechanism extends the service life of the conductive wire 21, reduces the cost increase and equipment downtime caused by frequent replacement of the conductive wire 21, ensures the continuity and stability of the testing process, avoids production interruptions caused by test abnormalities, improves the efficiency and quality of photovoltaic cell 101IV testing, and reduces production costs.

[0052] Please see Figure 1 and Figure 2 In some embodiments, the rotating component 3 includes: a plurality of first rotating elements 31, which are respectively connected to a plurality of conductive lines 21; and a driving element 32, which is connected to the plurality of first rotating elements 31 and is configured to drive the plurality of first rotating elements 31 to rotate circumferentially along the conductive lines 21.

[0053] Specifically, multiple first rotating parts 31 are connected to multiple conductive lines 21 respectively, ensuring that each conductive line 21 has an independent rotating part for control and drive, making the rotation of each conductive line 21 more precise and synchronized, better adapting to the wear conditions of different conductive lines 21, achieving more targeted surface switching, further improving the contact reliability between the conductive line 21 and the grid line, and reducing test errors caused by uneven wear of individual conductive lines 21.

[0054] Furthermore, by using a driving component 32 to drive the rotation of multiple first rotating components 31, the simultaneous switching of multiple conductive wires 21 is achieved, ensuring the consistency and coordination of the entire detection mechanism's actions. This improves the operating efficiency of the testing device 200, simplifies the control logic and drive system, and reduces system complexity and failure risk.

[0055] It is understandable that, compared to driving each rotating component separately, this centralized driving method makes it easier to achieve precise speed and angle control, ensuring that each conductive wire 21 can rotate accurately to the set angle, thereby making better use of the different surface areas of the conductive wire 21 for testing.

[0056] The connection between multiple first rotating components 31 and the driving component 32 enhances the flexibility and adaptability of the rotating assembly 3. When faced with diverse grid layouts of the solar cells 101 and varying degrees of wear that may occur during production, it can more effectively extend the lifespan of the conductive wires 21, reduce replacement frequency, and lower production costs. Simultaneously, the connection between multiple first rotating components 31 and the driving component 32 also helps improve the stability and reliability of the entire testing device 200, ensuring that the testing device 200 continuously provides accurate and stable test results, further enhancing the quality control level and production efficiency in the photovoltaic cell production process.

[0057] In some embodiments, the upper detection mechanism 100 further includes: a plurality of indexing components (not shown in the figure), the plurality of indexing components being connected to a plurality of first rotating members 31 respectively, the indexing components being used to control the first rotating members 31 to rotate according to a preset rotation angle.

[0058] The indexing component ensures that the rotation angle of the conductive wire 21 can be precisely controlled within a preset range, enabling the conductive wire 21 to be accurately switched to the unworn area. This achieves effective reuse of the conductive wire 21, avoids waste of the conductive wire 21 that may be caused by excessive rotation, and also reduces poor contact or test errors caused by rotation angle deviation. This ensures that IV testing can be carried out continuously and stably, thereby improving production efficiency and product quality.

[0059] Furthermore, the indexing component enhances the automation level of the upper inspection mechanism 100. The indexing component can automatically perform rotation operations at preset angles without manual intervention. This not only improves testing efficiency but also reduces the risk of production interruptions due to human error, thereby reducing labor costs.

[0060] In some embodiments, the indexing assembly further includes an indexing base and an indexing disk. The indexing base is disposed on the mounting frame 1. The outer periphery of the indexing disk is provided with indexing teeth and / or indexing grooves for the rotational indexing of the main shaft along the circumferential direction. A corresponding locking member is mounted on the indexing base. The locking member has a locking head for locking and releasing the indexing disk. The shape of the locking head is complementary to the shape of the indexing teeth or the indexing disk.

[0061] The indexing plate and indexing base work together, and the setting of indexing teeth and / or indexing grooves can divide the rotation of the spindle into multiple equal angles, providing a basic support for the precise control of the rotation angle. This ensures that the rotation angle of the conductive wire 21 strictly conforms to the preset value, and achieves precise contact between different surfaces of the conductive wire 21 and the grid lines of the battery cell 101, further improving the detection accuracy and reliability.

[0062] Furthermore, when the indexing plate rotates to the required angle, the locking head, under the control of the locking mechanism, can lock the indexing plate to prevent angular deviation caused by vibration of the mounting bracket 1 or pressure of the conductive wire 21, ensuring stable contact between the conductive wire 21 and the grid wire, and guaranteeing the continuity and stability of IV test data. When it is necessary to switch the rotation angle, the locking head can release the indexing plate in time, without affecting the automated operation rhythm of the upper detection mechanism 100, and reducing the probability of failure of the upper detection mechanism 100 due to rotation angle deviation.

[0063] Furthermore, the structural design of this indexing component facilitates the rapid adjustment and calibration of the rotation angle according to the specifications and testing requirements of different solar cells 101, supporting the versatility and flexibility of the upper testing mechanism 100 and enabling the upper testing mechanism 100 to better adapt to the diverse scenarios of photovoltaic cell production.

[0064] In some embodiments, the number of indexing teeth and / or indexing slots is three, and the distance between each indexing tooth and / or indexing slot is equal, thereby ensuring that the rotation angle of the conductive wire 21 is 120 degrees each time.

[0065] The conductive wire 21 rotates at a constant angle of 120° each time, allowing it to uniformly switch between three different surface areas and contact the grid lines of the solar cell 101. Figures 3 to 5 As shown, this achieves a uniform distribution of wear on the surface of the conductive wire 21. The service life of a single conductive wire 21 is extended by two times, reducing the frequency of replacement of the conductive wire 21 and effectively reducing the cost incurred in the production process due to frequent replacement of the conductive wire 21.

[0066] Furthermore, after each 120° rotation, the unworn new surface of the conductive wire 21 can make good contact with the grid lines, ensuring stable current conduction during testing and making the test data accurate and reliable. Even during long-term continuous production, accurate test results can be guaranteed, providing a strong basis for the performance evaluation of the solar cell 101.

[0067] Please see Figure 1 and Figure 2 In some embodiments, the rotating component 3 further includes: a plurality of second rotating members 33, which are arranged in a one-to-one correspondence with the first rotating members 31 and are respectively connected to the two ends of the conductive line 21. The second rotating members 33 are connected to the driving member 32 and are configured to rotate around the axis of the conductive line 21 under the drive of the driving member 32.

[0068] The second rotating component 33 optimizes the force distribution on the conductive wire 21. The first rotating component 31 and the second rotating component 33 are located at the two ends of the conductive wire 21, respectively, and rotate synchronously under the drive of the driving component 32. This makes the force on the conductive wire 21 more uniform during rotation, thereby reducing the twisting or bending deformation of the conductive wire 21 caused by single-end drive, effectively extending the service life of the conductive wire 21, and further reducing production costs.

[0069] The dual-drive mechanism of the first rotating member 31 and the second rotating member 33 improves rotational accuracy and stability. Simultaneous rotation at both ends ensures more precise and stable rotation of the conductive wire 21's axis, avoiding swaying or shaking that may occur due to driving from only one end. This ensures accurate contact between the conductive wire 21 and the grid lines of the solar cell 101, improving the reliability and repeatability of IV testing.

[0070] The first rotating component 31 and the second rotating component 33 enhance the load-bearing capacity and operational stability of the rotating assembly 3. The second rotating component 33 provides additional support and power for the rotation of the conductive wire 21, enabling the entire rotating assembly 3 to operate more stably. Especially when dealing with thinner or longer conductive wires 21, it can prevent the conductive wire 21 from sagging or deviating due to its own weight or friction during rotation.

[0071] Please see Figure 1 and Figure 2 In some embodiments, the upper detection mechanism 100 further includes: a synchronous shaft 41 connected to a drive member 32, the synchronous shaft 41 being configured to rotate circumferentially along the conductive line 21 under the drive of the drive member 32; and a first synchronous belt 42 sleeved on the synchronous shaft 41 and a plurality of first rotating members 31, the first synchronous belt 42 being configured to rotate with the synchronous shaft 41 so that the first synchronous belt 42 drives the plurality of first rotating members 31 to rotate synchronously.

[0072] The synchronous shaft 41 is connected to the drive component 32, which can transmit the power of the drive component 32 and convert it into rotational motion along the circumferential direction of the conductive line 21. When the synchronous shaft 41 starts to rotate under the drive of the drive component 32, the first synchronous belt 42 rotates synchronously with the synchronous shaft 41, and with the transmission characteristics of the first synchronous belt 42, it drives all the first rotating components 31 to rotate synchronously at the same rotational speed and angle.

[0073] The synchronous shaft 41 and the first synchronous belt 42 improve the working accuracy of the upper detection mechanism 100, ensuring that during the IV test, each conductive wire 21 can switch to the unworn surface and contact the grid line of the battery cell 101 at the same time and angle, thereby effectively avoiding local contact problems or test errors caused by asynchronous rotation, making the entire detection process more stable and reliable.

[0074] Furthermore, the combination of the synchronous shaft 41 and the first synchronous belt 42 enables rapid and precise synchronous rotation, reducing waiting time or adjustment steps caused by differences in rotational movements, thereby improving the operating efficiency of the upper inspection mechanism 100 and enabling more solar cells 101 to be inspected per unit time, meeting the demand for efficient inspection on the photovoltaic cell production line.

[0075] Meanwhile, the first synchronous belt 42 transmission can ensure that the movement of each first rotating component 31 remains synchronized during long-term operation, reducing the risk of vibration or damage to the upper detection mechanism 100 caused by transmission errors or uneven power, thereby extending the service life of the upper detection mechanism 100 and reducing the maintenance cost and production downtime of the upper detection mechanism 100.

[0076] Please see Figure 1 and Figure 2 In some embodiments, the synchronization component further includes a second synchronization belt 43, which is sleeved on the synchronization shaft 41 and a plurality of second rotating members 33. The second synchronization belt 43 is configured to rotate with the synchronization shaft 41 so that the second synchronization belt 43 drives the plurality of second rotating members 33 to rotate synchronously.

[0077] The synchronous shaft 41 rotates under the drive of the drive component 32, not only causing multiple first rotating components 31 to rotate synchronously via the first synchronous belt 42, but also driving multiple second rotating components 33 to rotate synchronously via the second synchronous belt 43, ensuring the consistency of the rotational movements of the first rotating components 31 and the second rotating components 33. This enhances the operating efficiency and stability of the entire upper detection mechanism 100. The simultaneous operation of multiple synchronous belts makes power transmission more uniform, reducing stress concentration that may be caused by single-point drive, thereby reducing the risk of equipment failure.

[0078] Furthermore, the combination of the synchronous shaft 41 with the first synchronous belt 42 and the second synchronous belt 43 provides higher torque output, ensuring smooth rotation even with long or multiple conductive wires 21, without slippage or asynchrony. This not only improves the adaptability of the upper detection mechanism 100 but also extends its service life, reducing maintenance costs and production downtime.

[0079] Please see Figure 6 , Figure 6This is a schematic diagram of the structure of the testing device 200 provided in the embodiments of this application. The second aspect of this utility model discloses a testing device 200 for testing a battery cell 101. The surface of the battery cell 101 is provided with multiple grid lines. The testing device 200 includes: an upper testing mechanism 100 as described in the first aspect of this utility model; a support bracket for supporting and fixing the battery cell 101, located below the upper testing mechanism 100; and a pressing drive assembly 202 connected to the upper testing mechanism 100. The pressing drive assembly 202 can drive the upper testing mechanism 100 to move downwards in a vertical direction to press the grid lines on the front side of the battery cell 101, so that each conductive wire 21 contacts each grid line.

[0080] It is understood that a lower detection mechanism 201 is provided below the support bracket. The lower detection mechanism 201 can move upward under the drive of the pressing drive assembly 202 to press the grid lines located on the back of the battery cell 101.

[0081] Optionally, the pressing drive assembly 202 can be a slide rail slider structure to drive the upper detection mechanism 100 and the lower detection mechanism 201 to move, or it can be a lead screw nut structure to drive the upper detection mechanism 100 and the lower detection mechanism 201 to move. This application embodiment does not limit this.

[0082] The testing device 200 integrates the upper detection mechanism 100 from the first aspect, along with a support bracket and a pressing drive assembly 202, to form a solar cell 101 testing system. In actual operation, the support bracket holds the solar cell 101, ensuring its position is fixed during testing. Upon receiving a command, the pressing drive assembly 202 pushes the upper detection mechanism 100 downwards smoothly in the vertical direction, ensuring that each conductive wire 21 makes tight contact with the grid lines on the front side of the solar cell 101, achieving electrical connection. The testing device 200 has a high degree of automation, which not only improves testing efficiency but also enhances testing accuracy due to the close cooperation of its components.

[0083] It is understood that the testing device 200 using the upper detection mechanism 100 of the above embodiments has all the technical effects of the upper detection mechanism 100 of the above embodiments, and will not be repeated here.

[0084] Please see Figure 6 In some embodiments, the testing device 200 further includes a pressure sensor 203, which is connected to the rotating component 3 of the upper detection mechanism 100 and is used to detect the pressure between the upper detection mechanism 100 and the battery cell 101.

[0085] Specifically, the first rotating member 31 and the second rotating member 33 of the upper detection mechanism 100 may be provided with mounting holes, and the pressure sensor 203 is disposed in the mounting holes so that the pressure sensor 203 can detect the pressure between the conductive wire 21 and the grid line of the battery cell 101.

[0086] The pressure sensor 203 monitors the pressure value of the upper detection mechanism 100 when pressing the grid lines of the solar cell 101, providing accurate pressure feedback to the testing device 200. During the testing process, appropriate and stable pressure ensures good contact between the conductive wire 21 and the grid lines, affecting the accuracy and reliability of the test results.

[0087] Furthermore, the pressure sensor 203 is combined with the rotating component 3 to achieve coordinated operation of pressure monitoring and the rotation switching of the conductive wire 21. When the pressure exceeds the set range, the rotating component 3 can be triggered to rotate the conductive wire 21 to an unworn surface for testing. This coordinated mechanism further improves the intelligence and adaptability of the testing device 200, ensuring stable testing performance under different battery cells 101 and different operating conditions.

[0088] Furthermore, the introduction of pressure sensor 203 improves the ease of operation and maintainability of the testing device 200. During the operation of the testing device 200, operators can use the real-time data from pressure sensor 203 to understand the contact status between the upper detection mechanism 100 and the battery cell 101, and promptly identify and resolve potential problems.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An upper detection mechanism for detecting battery cells, wherein the surface of the battery cells is provided with a plurality of grid lines, characterized in that, The aforementioned testing organization includes: Mounting rack; A conductive component includes multiple conductive wires, each conductive wire abutting against each of the grid lines, and the conductive wires extending along the length of the grid lines to energize the battery cell; A rotating assembly is disposed on the mounting bracket and is connected to a plurality of conductive wires respectively. The rotating assembly is configured to drive the plurality of conductive wires to rotate around the axis of the conductive wires so that different surfaces of the conductive wires abut against the grid lines.

2. The upper detection mechanism according to claim 1, characterized in that, The rotating component includes: A plurality of first rotating components are respectively connected to a plurality of the conductive wires; A driving element connected to a plurality of first rotating elements, the driving element being configured to drive the plurality of first rotating elements to rotate circumferentially along the conductive line.

3. The upper detection mechanism according to claim 2, characterized in that, The aforementioned testing mechanism also includes: Multiple indexing components are provided, each of which is connected to a plurality of the first rotating members. The indexing components are used to control the first rotating members to rotate according to a preset rotation angle.

4. The upper detection mechanism according to claim 3, characterized in that, The indexing component also includes: A dividing base and a dividing plate are provided. The dividing base is disposed on the mounting frame. The outer periphery of the dividing plate is provided with dividing teeth and / or dividing grooves for dividing the rotation of the first rotating component. A corresponding locking component is mounted on the dividing base. The locking component has a locking head for locking and releasing the dividing plate. The shape of the locking head is complementary to the shape of the dividing teeth or the dividing plate.

5. The upper detection mechanism according to claim 4, characterized in that, The number of indexing teeth and / or indexing slots is three, and the distance between each indexing tooth and / or indexing slot is equal.

6. The upper detection mechanism according to claim 2, characterized in that, The rotating assembly also includes: Multiple second rotating members are provided, each corresponding to a first rotating member, and each second rotating member is connected to one end of a conductive wire. The second rotating members are connected to the driving member and are configured to rotate around the axis of the conductive wire under the drive of the driving member.

7. The upper detection mechanism according to claim 2, characterized in that, The aforementioned testing mechanism also includes: A synchronous shaft connected to the drive element, the synchronous shaft being configured to rotate circumferentially along the conductive line under the drive of the drive element; A first synchronous belt is sleeved on the synchronous shaft and the plurality of first rotating components. The first synchronous belt is configured to rotate with the synchronous shaft so that the first synchronous belt drives the plurality of first rotating components to rotate synchronously.

8. The upper detection mechanism according to claim 1, characterized in that, The conductive component also includes: Multiple tensioning members are respectively disposed at both ends of multiple conductive wires, and the tensioning members are used to control the tension of the conductive wires.

9. A testing apparatus for testing solar cells, wherein the surface of the solar cells is provided with a plurality of grid lines, characterized in that, The testing apparatus includes: The upper testing organization as described in any one of claims 1-8; A support bracket for supporting and fixing the battery cells, the support bracket being located below the upper detection mechanism; A pressing drive assembly is connected to the upper detection mechanism. The pressing drive assembly can drive the upper detection mechanism to move downward in a vertical direction to press the grid lines on the front side of the battery cell, so that each conductive line contacts each grid line.

10. The testing apparatus according to claim 9, characterized in that, The testing apparatus also includes: A pressure sensor is connected to the rotating assembly of the upper detection mechanism, and the pressure sensor is used to detect the pressure between the upper detection mechanism and the battery cell.

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