Battery test production line and test method

Abstract

The invention discloses a battery test production line and a test method. Wherein the battery test production line comprises a loading device, a feeding device and a test device; the feeding device comprises a first deviation rectifying assembly and a first taking and placing mechanism, the first deviation rectifying assembly comprises a first sliding table unit, a second sliding table unit and four deviation rectifying carrying tables, and the two deviation rectifying carrying tables are arranged on the first sliding table unit and the second sliding table unit correspondingly; the feeding device is provided with a feeding platform deck; the testing device comprises two testing carrying tables and a second deviation rectifying assembly, the second deviation rectifying assembly comprises a third sliding table unit and a fourth sliding table unit, and the two testing carrying tables are arranged on the third sliding table unit and the fourth sliding table unit respectively; wherein each sliding table unit is a UVW deviation rectifying platform. The battery test production line provided by the invention can improve the test accuracy, is high in test efficiency, and reduces the test cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic cell production, and particularly relates to a cell test production line and a test method. BACKGROUND

[0002] In photovoltaic cell production, IV testing needs to be performed on cell pieces to evaluate core performance parameters of the cell pieces, such as photoelectric conversion efficiency, short-circuit current, open-circuit voltage, and the like.

[0003] In the related art, the grid lines of the cell pieces need to be precisely contacted with the test probes during the testing process to ensure the testing accuracy. Meanwhile, in order to ensure the testing efficiency, multiple cell pieces need to be simultaneously rectified and tested, which leads to a complex structure of the entire cell test production line, a large occupied space, and an increased testing cost of the photovoltaic cell. SUMMARY

[0004] The application aims to provide a cell test production line and a test method, which at least solve one of the problems in the background art.

[0005] To solve the above technical problems, the application is implemented as follows: According to a first aspect of the application, a cell test production line is provided, comprising: a feeding device, the feeding device comprising a first rectification assembly and a first pick-and-place mechanism, the first rectification assembly comprising a first sliding table unit, a second sliding table unit, and four rectification tables, two of which are arranged on the first sliding table unit and the second sliding table unit, respectively; a feeding device, the feeding device having a feeding table; a testing device, the testing device comprising two testing tables and a second rectification assembly, the second rectification assembly comprising a third sliding table unit and a fourth sliding table unit, the two testing tables being arranged on the third sliding table unit and the fourth sliding table unit, respectively; wherein each of the sliding table units is a UVW rectification platform.

[0006] Optionally, the first sliding table unit and the second sliding table unit are configured to allow the corresponding rectification tables to have translational degrees of freedom in a first direction and a second direction, respectively, and to have a rotational degree of freedom in a third direction. The third sliding table unit and the fourth sliding table unit are configured to allow the corresponding testing tables to have translational degrees of freedom in the first direction and the second direction, respectively, and to have a rotational degree of freedom in the third direction. The first pick-and-place mechanism is used to pick and place the workpieces on each of the deviation correction platforms to the feeding platform, the feeding device is used to feed the workpieces on the feeding platform to two test platforms respectively, and the two test platforms are used to test the workpieces by IV testing. The bearing surfaces of the deviation correction platforms, the feeding platform and the test platforms are parallel to each other, the first direction and the second direction are parallel to the bearing surfaces and perpendicular to each other, and the third direction is perpendicular to the bearing surfaces.

[0007] Optionally, the four deviation correction platforms are a first deviation correction platform, a second deviation correction platform, a third deviation correction platform and a fourth deviation correction platform, and the first deviation correction platform, the second deviation correction platform, the third deviation correction platform and the fourth deviation correction platform are arranged in the first direction in sequence. The first deviation correction platform and the fourth deviation correction platform are rotatably assembled on the first sliding table unit and the second sliding table unit respectively, and the third deviation correction platform and the fourth deviation correction platform are fixedly arranged.

[0008] Optionally, the feeding device further comprises a first conveying mechanism, the first conveying mechanism, the first deviation correction assembly and the feeding device are arranged in the second direction in sequence, and the first conveying mechanism is used to convey the workpieces to each of the deviation correction platforms in the second direction. The bearing surfaces of the feeding platform, each of the deviation correction platforms and the first conveying mechanism are parallel to each other, and the second direction and the first direction are parallel to the bearing surfaces and perpendicular to each other.

[0009] Optionally, the feeding device further comprises a visual detection mechanism. The visual detection mechanism is used to detect the picture information of the workpieces on each of the deviation correction platforms, and the first sliding table unit and the second sliding table unit correct the positions of the workpieces on the corresponding deviation correction platforms through the picture information.

[0010] Optionally, each of the sliding table units comprises a support structure, a first sliding block, a second sliding block and a rotating structure, the first sliding block is movably assembled on the support structure, the second sliding block is movably assembled on the first sliding block, the rotating structure is rotatably assembled on the second sliding block, and the deviation correction platform is fixed on the rotating structure; and / or, Each of the sliding table units further comprises a first driving member, a second driving member and a third driving member, the first driving member is connected with the first sliding block, and the second driving member and the third driving member are connected with the second sliding block of the same sliding table unit.

[0011] Optionally, the feeding device includes a turntable and a plurality of feeding platforms disposed around the turntable, wherein when the turntable rotates, each feeding platform can be rotated sequentially to the two test platforms.

[0012] Optionally, it also includes a feeding device, which includes a second conveying mechanism and a second pick-and-place mechanism; When one of the feeding platforms is located at the two test platforms, the other two feeding platforms are located at the loading station and the unloading station, respectively. The first pick-and-place mechanism is used to pick up and place workpieces from the four correction platforms onto the feeding platform of the loading station, and the second pick-and-place mechanism is used to pick up and place workpieces from the feeding platform at the unloading station onto the second conveying mechanism.

[0013] Optionally, the unloading device further includes a recycling mechanism for recycling unqualified workpieces on the feeding platform at the unloading station.

[0014] According to a second aspect of this application, a battery testing method is provided, applied to the battery testing production line described in the first aspect, the testing method comprising: The first slide unit and the second slide unit respectively pre-correct the battery cells on their corresponding correction platforms, and use the workpieces on the other two correction platforms as correction references respectively, so that the multiple workpieces on the four correction platforms are divided into two groups. The two sets of workpieces are respectively placed on the two test platforms; The third slide unit and the fourth slide unit respectively perform secondary correction on a group of workpieces on their corresponding test platforms; The two sets of test platforms are used to test the corresponding set of workpieces.

[0015] In this application, by setting up a first correction component, a third slide unit, and a fourth slide unit, the solar cell can be pre-corrected by the first correction component during the IV test, and then the solar cell on the test platform can be corrected a second time by the third slide unit and the fourth slide unit, thus ensuring the accuracy of the test.

[0016] Furthermore, by adopting a step-by-step correction method, the structure of the first correction component and the testing device is simplified, and the battery testing production line can test multiple battery cells at once, thereby improving the testing efficiency of the testing production line and reducing the overall testing cost of the testing production line.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the battery testing production line provided in this application; Figure 2 yes Figure 1 Top view; Figure 3 This is a schematic diagram of the first correction component provided in this application; Figure 4 yes Figure 3 Top view; Figure 5 This is a schematic diagram of the test apparatus provided in this application.

[0019] Figure label: 100. Feeding device; 1. First correction assembly; 11. First slide unit; 111. Support structure; 112. First slider; 113. Second slider; 114. Rotation structure; 115. First drive component; 116. Second drive component; 117. Third drive component; 12. Second slide unit; 13. First correction platform; 14. Second correction platform; 15. Third correction platform; 16. Fourth correction platform; 2. First pick-and-place mechanism; 3. First conveying mechanism; 200. Feeding device; 201. Feeding platform; 202. Turntable; 300. Test apparatus; 301. Third slide unit; 302. Fourth slide unit; 303. Test stage; 400. Feeding device; 401. Second picking and placing mechanism; 402. Second conveying mechanism. Detailed Implementation

[0020] Embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application are within the scope of protection of this application.

[0021] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] The following is combined with Figures 1-5 This application describes a battery testing production line and testing method according to embodiments of the present application.

[0025] like Figures 1 to 5 As shown, according to a first aspect of this application, a battery testing production line is provided, including a loading device 100, a feeding device 200, and a testing device 300; the loading device 100 includes a first correction component 1 and a first pick-and-place mechanism 2, the first correction component 1 includes a first slide unit 11, a second slide unit 12, and four correction platforms, wherein two correction platforms are respectively disposed on the first slide unit 11 and the second slide unit 12; the feeding device 200 has a feeding platform 201; the testing device 300 includes two testing platforms 303 and a second correction component, the second correction component includes a third slide unit 301 and a fourth slide unit 302, the two testing platforms 303 are respectively disposed on the third slide unit 301 and the fourth slide unit 302; wherein each slide unit is a UVW correction platform.

[0026] Specifically, in this embodiment, the loading device 100 is used to load the workpiece (hereinafter described as the battery cell to be tested) onto the feeding device 200, and the feeding device 200 is used to feed the battery cell to be tested onto the test stage 303 of the testing device 300, and then perform IV testing on the battery cell through the test stage 303.

[0027] In the above structure, the first correction component 1 has four correction platforms, which allows the first correction component 1 to carry up to four cells to be tested. Then, the first slide unit 11 and the second slide unit 12 correct the cells on two of the correction platforms. During this process, each slide unit can use the cells to be tested on the other two correction platforms as correction references, so that the maximum four cells can be divided into two groups, and the synchronous pre-positioning of the two groups of cells can be completed, ensuring the consistency of the relative positions of the cells to be tested in the same group, and completing the pre-correction process.

[0028] After the first pick-and-place mechanism 2 picks up and places the two sets of cells under test after pre-correction onto the feeding platform 201, the feeding platform 201 then positions the two sets of cells under test on the two test platforms 303 respectively. The third slide unit 301 and the fourth slide unit 302 can then perform secondary correction on the two sets of cells under test on the two platforms respectively, so that up to four cells after pre-correction and secondary correction can pass through the two test platforms 303 to complete IV testing. Among them, the third slide unit 301 and the fourth slide unit 302 independently perform precise position compensation on the two sets of cells based on the station reference of the test platform 303, ensuring that the electrical connection contact points and signal acquisition areas of the cells and the test platform 303 are completely matched.

[0029] In this embodiment, each slide unit adopts a UVW correction platform, i.e., an XYθ correction platform, enabling the corresponding correction stage or test stage 303 on each slide unit to independently achieve translation in the X and Y directions and rotation around the Z-axis at θ. This reduces response time and improves precise positioning capabilities, ensuring the correction accuracy of each slide unit while avoiding repeated adjustments during the correction process. This further optimizes the overall production line cycle time and increases the cell testing throughput per unit time. Furthermore, the dual correction mechanism effectively eliminates positional and angular deviations during cell transfer and station switching, significantly improving the accuracy of IV test data.

[0030] In this embodiment, the first correction component 1 is equipped with four correction platforms, which can simultaneously carry up to four cells to be tested. The first and second slide units 12 simultaneously perform pre-correction operations on the two groups of cells. Compared with the traditional single-cell and double-cell sequential correction mode, the time consumed in a single pre-correction process is greatly shortened. The testing device 300 is equipped with two testing platforms 303 and corresponding third and fourth slide units 302, which can simultaneously perform secondary correction and IV testing on the two groups of pre-corrected cells, realizing the efficient operation mode of "up to four cells processed in parallel and two groups tested simultaneously".

[0031] Furthermore, the use of a unified UVW correction platform as the execution component for each sliding unit forms a step-by-step correction process of "pre-correction + secondary correction," avoiding problems such as structural complexity and poor compatibility caused by using different types of positioning mechanisms, and simplifying the overall design and assembly process of the equipment. In addition, the combination of four correction platforms with two test platforms 303 enables the simultaneous processing of up to four solar cells, reducing the redundant configuration of core components such as loading, correction, and testing, significantly reducing hardware procurement costs and equipment footprint, and lowering the testing costs of the entire testing production line.

[0032] In practical applications, the aforementioned testing production line can also perform IV testing on two or three solar cells at a time. The specific requirements can be adapted to the actual production situation and output, and this application does not impose any restrictions on this.

[0033] Optionally, such as Figures 1 to 5 As shown, the first slide unit 11 and the second slide unit 12 are used to enable the corresponding correction stage to have translational degrees of freedom along the first direction (X direction in the figure) and the second direction (Y direction in the figure), and rotational degrees of freedom along the third direction (Z direction in the figure); the third slide unit 301 and the fourth slide unit 302 are used to enable the corresponding test stage 303 to have translational degrees of freedom along the first direction and the second direction, and rotational degrees of freedom along the third direction; the first pick-and-place mechanism 2 is used to pick up and place the workpieces on each correction stage onto the feeding stage 201, and the feeding device 200 is used to feed the workpieces on the feeding stage 201 to the two test stages 303 respectively, and the two test stages 303 are used to test the workpieces by performing IV tests; wherein, the bearing surfaces of the correction stage, the feeding stage 201 and the test stage 303 are parallel to each other, the first direction and the second direction are parallel to the bearing surfaces and perpendicular to each other, and the third direction is perpendicular to the bearing surfaces.

[0034] Specifically, in this embodiment, the testing production line adopts a modular hierarchical structure. The first correction component 1 of the feeding device 100 is equipped with four correction platforms, two of which are respectively paired with the first slide unit 11 and the second slide unit 12. Each slide unit can realize translation along the first and second mutually perpendicular directions within the bearing surface, as well as rotation in a third direction perpendicular to the bearing surface. The testing device 300 is equipped with two testing platforms 303, which are respectively connected to the third slide unit 301 and the fourth slide unit 302, and have the same three-degree-of-freedom motion capability as the preceding slide units. The bearing surfaces of the correction platforms, the feeding platform 201 and the testing platform 303 are kept parallel. With the transfer function of the first pick-and-place mechanism 2 and the feeding function of the feeding device 200, a continuous operation process of pre-correction of feeding, transfer and material transport, and secondary correction of testing is realized. The overall structure is compact and has a high degree of matching of motion dimensions.

[0035] Furthermore, this testing line achieves graded correction and positioning of multiple solar cells under test through the precise three-degree-of-freedom motion of the multi-slide unit. This effectively eliminates positional and angular deviations during workpiece transfer, ensuring precise contact between the solar cells and the testing stage 303, and significantly improving the accuracy and repeatability of IV test data. The configuration of four correction stages and dual testing stages 303 supports parallel processing and synchronous testing of multiple solar cells. Combined with the high-response characteristics of the slide unit, it significantly shortens the process time for single-batch testing and increases the overall testing throughput of the production line. The unified motion degree-of-freedom design and parallel bearing surface layout simplify the structural design and assembly difficulty of the equipment, reducing hardware configuration and subsequent maintenance costs.

[0036] Optionally, such as Figures 3 to 4 As shown, the four correction platforms are the first correction platform 13, the second correction platform 14, the third correction platform 15, and the fourth correction platform 16, which are arranged sequentially along the first direction. The first correction platform 13 and the fourth correction platform 16 are rotatably mounted on the first slide unit 11 and the second slide unit 12, respectively, while the third correction platform 15 and the fourth correction platform 16 are fixedly installed.

[0037] Specifically, in this embodiment, four correction platforms are arranged sequentially along the first direction to form a regular work arrangement, facilitating batch transfer and positioning identification by the first pick-and-place mechanism 2. The first correction platform 13 and the fourth correction platform 16 are respectively mounted on the first slide unit 11 and the second slide unit 12, and possess rotational freedom, enabling them to adjust the position and angle of the battery cells they carry based on the precise movement capability of the UVW correction platform. Furthermore, the third correction platform 15 and the second correction platform 14 are fixedly installed and can serve as correction reference components, providing a reference for the adjustment of the first correction platform 13 and the fourth correction platform 16, ensuring the relative positional consistency of the battery cells in the same group.

[0038] In the above structure, the combination of the movable correction stage and the fixed reference correction stage significantly reduces the number of drive slide units. While simplifying the structure and reducing hardware costs, it avoids the superposition of errors from multiple slide linkages, improves the accuracy and stability of pre-correction, adapts to the needs of parallel processing of multiple battery cells, and further optimizes the overall operation cycle of the production line.

[0039] Optionally, such as Figures 1 to 2As shown, the feeding device 100 also includes a first conveying mechanism 3. The first conveying mechanism 3, the first correction assembly 1, and the feeding device 200 are sequentially connected along the second direction. The first conveying mechanism 3 is used to convey the workpiece to each correction platform along the second direction. The bearing surfaces of the feeding platform 201, each correction platform, and the first conveying mechanism 3 are parallel to each other. The second direction and the first direction are both parallel to the bearing surfaces and perpendicular to each other.

[0040] Specifically, in this embodiment, by setting up a first conveying mechanism 3 and sequentially connecting it with the first correction component 1 and the feeding device 200 along the second direction, a continuous workflow extending in a straight line is formed, which greatly simplifies the transfer path of the battery cells to be tested and reduces the risk of positional deviation during the workpiece transfer process. The layout design, in which each bearing surface remains parallel and the first and second directions are perpendicular to each other, enables precise matching of the motion dimensions of each process, improving the coordination of loading, correction, and feeding actions. At the same time, the orderly linear arrangement enables continuous conveying and batch pre-correction of battery cells, avoiding process stagnation caused by disordered transfer, significantly improving the operational efficiency of the loading process, and reducing the space occupancy rate of the equipment.

[0041] Optionally, refer to Figures 1 to 2 The feeding device 100 also includes a vision inspection mechanism (not shown in the figure); the vision inspection mechanism is used to detect the image information of the workpieces on each correction platform, and the first slide unit 11 and the second slide unit 12 respectively correct the position of the workpieces on the corresponding correction platform through the image information.

[0042] Specifically, in this embodiment, a visual inspection mechanism collects image information of the solar cells on the correction platform, providing precise positional deviation data support for the first sliding stage unit 11 and the second sliding stage unit 12, thus achieving automatic control of the pre-correction of the solar cells under test. Simultaneously, visual inspection can identify the position and angular offset of the solar cells in real time, making the adjustment actions of the sliding stage units more targeted and significantly improving the accuracy and consistency of the pre-correction. Furthermore, the linkage between visual inspection and the sliding stage units eliminates the need for manual intervention, avoids the introduction of human error, further optimizes the cycle time of the pre-correction process, and lays the foundation for the accurate execution of subsequent secondary correction and IV testing.

[0043] Optionally, such as Figures 3 to 5 As shown, each slide unit includes a support structure 111, a first slider 112, a second slider 113, and a rotating structure 114. The first slider 112 is movably mounted on the support structure 111, the second slider 113 is movably mounted on the first slider 112, the rotating structure 114 is rotatably mounted on the second slider 113, and the correction platform is fixed on the rotating structure 114.

[0044] Specifically, in this embodiment, through the hierarchical assembly design of the support structure 111, the first slider 112, the second slider 113, and the rotating structure 114, the slide unit forms a three-degree-of-freedom motion structure of "two-dimensional translation + single-axis rotation," precisely matching the X / Y direction translation and Z-axis rotation required for battery cell correction. The hierarchical movement structure of the first slider 112 and the second slider 113 enables high-precision planar displacement adjustment; the rotating structure 114 directly supports the correction stage, quickly compensating for angular deviations in the battery cell under test.

[0045] The above-mentioned structure has a compact layout and a short motion chain, which reduces the superposition of transmission errors, improves the response speed and positioning accuracy of the correction action, and simplifies the assembly and maintenance process of the slide unit, making it suitable for the batch parallel correction operation requirements of the production line.

[0046] Optionally, such as Figures 3 to 5 As shown, each slide unit also includes a first drive member 115, a second drive member 116 and a third drive member 117. The first drive member 115 is connected to the first slider 112, and the second drive member 116 and the third drive member 117 are respectively connected to the second slider 113 of the same slide unit.

[0047] Specifically, in this embodiment, the slide unit is configured with an independent drive architecture for the first, second, and third drive members 117. The first drive member 115 drives the first slider 112 to achieve translation in one direction, while the second and third drive members 117 work together to drive the second slider 113 and the rotating structure 114 to respectively complete translation in another direction and rotation around the axis. The independent drive mode avoids motion coupling interference, significantly improving the control accuracy and response speed of each degree of freedom motion. At the same time, the dual-drive member linkage design simplifies the transmission link of the rotating structure 114, reduces the risk of mechanical wear and error superposition, and adapts to the high-precision and high-efficiency correction requirements of the solar cells.

[0048] In the above structure, the first slider 112 can be slidably disposed on the support structure 111 along the first direction, the second slider 113 can be slidably disposed on the first slider 112 along the second direction, and the rotating structure 114 can be rotatably disposed on the second slider 113 around the third direction; alternatively, the first slider 112 can be slidably disposed on the support structure 111 along the second direction, the second slider 113 can be slidably disposed on the first slider 112 along the first direction, the first driving member 115 can be connected to the first slider 112 or the second slider 113, and the second driving member 116 and the third driving member 117 can also be simultaneously connected to the same first slider 112 or the same second slider 113. The specific configuration can be flexibly set according to actual needs, and no restrictions are imposed here.

[0049] Optionally, such as Figures 1 to 2As shown, the feeding device 200 includes a turntable 202 and a plurality of feeding platforms 201 disposed around the turntable 202. When the turntable 202 rotates, each feeding platform 201 can be rotated sequentially to the two test platforms 303.

[0050] Specifically, in this embodiment, the rotation of the turntable 202 can drive each feeding platform 201 to rotate sequentially to the two testing platforms 303, realizing continuous connection between the feeding and testing processes. Compared with linear reciprocating feeding, this structure eliminates the waiting time for reciprocating reset, and can simultaneously complete the parallel operations of loading, transferring, and unloading, greatly improving the feeding cycle time; at the same time, the multi-platform configuration supports batch transfer of pre-corrected battery cells, further improving the overall testing efficiency of the production line.

[0051] Optionally, such as Figures 1 to 2 As shown, the test production line also includes a feeding device 400, which includes a second conveying mechanism 402 and a second pick-and-place mechanism 401. When one of the feeding platforms 201 is located at the two test platforms 303, the other two feeding platforms 201 are located at the loading station and the unloading station, respectively. The first pick-and-place mechanism 2 is used to pick up and place the workpieces on the four correction platforms onto the feeding platform 201 at the loading station, and the second pick-and-place mechanism 401 is used to pick up the workpieces on the feeding platform 201 at the unloading station onto the second conveying mechanism 402.

[0052] Specifically, in this embodiment, a circular work layout combining a turntable 202 and multiple feeding platforms 201 is adopted to achieve parallel and synchronous operation of the loading, testing, and unloading processes. When the turntable 202 drives one feeding platform 201 to rotate to the testing platform 303 to perform the testing operation, the other feeding platforms 201 can be simultaneously at the loading and unloading stations, respectively completing the loading and transfer of the cells to be tested and the unloading and transfer of the tested cells, avoiding the waiting time at a single station and greatly improving the continuous operation capability of the production line. At the same time, the first and second pick-and-place mechanisms 401 have clear division of labor, and with the rotating station switching of the turntable 202, the batch flow and efficient processing of up to four cells to be tested can be achieved, significantly optimizing the overall cycle time of the production line and reducing the time loss during the process connection.

[0053] Optionally, refer to Figures 1 to 2 The unloading device 400 also includes a recycling mechanism (not shown in the figure), which is used to recycle unqualified workpieces on the feeding platform 201 at the unloading station.

[0054] Specifically, in this embodiment, the recycling mechanism can directly sort and recycle the defective battery cells on the feeding platform 201 at the unloading station without having to transfer them to the sorting process. This shortens the processing flow of defective products, realizes the integrated operation of testing, sorting, and recycling, avoids the mixing of qualified and unqualified products, improves the sorting efficiency of the production line, and reduces the risk of subsequent mis-transfer of unqualified products.

[0055] According to the second aspect of this application, reference to Figure 1 and Figure 2 A battery testing method is provided, applied to a battery testing production line according to the first aspect. The testing method includes: First, the first slide unit 11 and the second slide unit 12 respectively perform pre-correction on the corresponding correction platform of the battery cells, and use the workpieces on the other two correction platforms as correction references respectively, so that the multiple workpieces on the four correction platforms are divided into two groups, and the pre-positioning of the two groups of battery cells is completed, realizing the grouped synchronous correction of the four battery cells and ensuring that the relative positions of the battery cells in the same group are consistent.

[0056] Secondly, the two sets of workpieces are placed on two test platforms 303 respectively. That is, the two sets of pre-corrected test cells are accurately transferred to the two test platforms 303 by the transfer of the feeding platform 201 of the feeding device 200.

[0057] Next, the third slide unit 301 and the fourth slide unit 302 respectively perform secondary correction on a set of workpieces on their corresponding test stage 303. That is, the third slide unit 301 and the fourth slide unit 302 perform secondary correction on the two sets of battery cells to be tested based on the station reference of the test stage 303 to eliminate positional offset during the transfer process; Finally, two sets of test platforms 303 are used to test the corresponding set of workpieces. That is, the two test platforms 303 are started synchronously for IV testing to complete the electrical performance testing of the two sets of solar cells. The entire process is closely integrated, realizing parallel and precise testing of multiple solar cells.

[0058] In the aforementioned process, this testing method, relying on a hierarchical correction mechanism and a grouped parallel testing mode, achieves a dual improvement in testing accuracy and efficiency. Specifically, pre-correction uses a fixed platform cell as a reference to ensure the uniformity of the relative positions of cells within the same group, laying the foundation for subsequent accurate testing. Secondary correction compensates for errors at the testing station; this dual correction effectively eliminates transfer and positioning errors, significantly improving the accuracy and repeatability of IV test data. Simultaneously, the design of simultaneous pre-correction for four cells in groups and simultaneous secondary correction and testing for two groups of cells significantly shortens the testing time for a single batch of cells. Furthermore, the process design of grouped reference correction and hierarchical positioning eliminates the need for additional complex positioning fixtures, simplifying operation steps, reducing the need for manual intervention, and further optimizing the operational stability of the production line and overall testing costs.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery testing production line, characterized in that, include: The feeding device (100) includes a first correction component (1) and a first pick-and-place mechanism (2). The first correction component (1) includes a first slide unit (11), a second slide unit (12) and four correction platforms, wherein two of the correction platforms are respectively disposed on the first slide unit (11) and the second slide unit (12). Feeding device (200), the feeding device (200) has a feeding platform (201); The testing device (300) includes two test stages (303) and a second correction component. The second correction component includes a third slide unit (301) and a fourth slide unit (302). The two test stages (303) are respectively disposed on the third slide unit (301) and the fourth slide unit (302). Each of the aforementioned slide units is a UVW correction platform.

2. The battery testing production line according to claim 1, characterized in that, The first slide unit (11) and the second slide unit (12) are used to enable the corresponding correction stage to have translational degrees of freedom along the first direction and the second direction, and rotational degrees of freedom along the third direction, respectively. The third slide unit (301) and the fourth slide unit (302) are used to enable the corresponding test stage (303) to have translational degrees of freedom along the first direction and the second direction, and rotational degrees of freedom along the third direction, respectively. The first pick-and-place mechanism (2) is used to pick up and place the workpieces on each of the correction platforms onto the feeding platform (201), and the feeding device (200) is used to feed the workpieces on the feeding platform (201) to the two test platforms (303) respectively. The two test platforms (303) are used to test the IV test on the workpieces. The bearing surfaces of the correction platform, the feeding platform (201), and the testing platform (303) are parallel to each other. The first direction and the second direction are parallel to the bearing surfaces and perpendicular to each other. The third direction is perpendicular to the bearing surfaces.

3. The battery testing production line according to claim 1, characterized in that, The four correction platforms are a first correction platform (13), a second correction platform (14), a third correction platform (15), and a fourth correction platform (16), which are arranged sequentially along a first direction. The first correction stage (13) and the fourth correction stage (16) are rotatably mounted on the first slide unit (11) and the second slide unit (12), respectively, while the third correction stage (15) and the fourth correction stage (16) are fixedly mounted.

4. The battery testing production line according to claim 3, characterized in that, The feeding device (100) further includes a first conveying mechanism (3), the first conveying mechanism (3), the first correction component (1) and the feeding device (200) are sequentially connected along the second direction, and the first conveying mechanism (3) is used to convey the workpiece to each of the correction platforms along the second direction; The bearing surfaces of the feeding platform (201), each of the correction platforms and the first conveying mechanism (3) are parallel to each other, and the second direction and the first direction are both parallel to the bearing surfaces and perpendicular to each other.

5. The battery testing production line according to claim 1, characterized in that, The feeding device (100) also includes a vision inspection mechanism; The visual inspection mechanism is used to detect image information of the workpieces on each of the correction platforms. The first slide unit (11) and the second slide unit (12) correct the position of the workpieces on the corresponding correction platforms by means of the image information.

6. The battery testing production line according to claim 1, characterized in that, Each of the aforementioned slide units includes a support structure (111), a first slider (112), a second slider (113), and a rotating structure (114). The first slider (112) is movably mounted on the support structure (111), the second slider (113) is movably mounted on the first slider (112), and the rotating structure (114) is rotatably mounted on the second slider (113). The correction stage is fixed on the rotating structure (114); and / or, Each of the slide units further includes a first drive member (115), a second drive member (116) and a third drive member (117). The first drive member (115) is connected to the first slider (112), and the second drive member (116) and the third drive member (117) are respectively connected to the second slider (113) of the same slide unit.

7. The battery testing production line according to claim 1, characterized in that, The feeding device (200) includes a turntable (202) and a plurality of feeding platforms (201) disposed around the turntable (202). When the turntable (202) rotates, each feeding platform (201) can be rotated sequentially to the two test platforms (303).

8. The battery testing production line according to claim 7, characterized in that, It also includes a feeding device (400), which includes a second conveying mechanism (402) and a second pick-and-place mechanism (401). When one of the feeding platforms (201) is located at the two test platforms (303), the other two feeding platforms (201) are located at the loading station and the unloading station, respectively. The first pick-and-place mechanism (2) is used to pick up and place the workpieces on the four correction platforms onto the feeding platform (201) of the loading station, and the second pick-and-place mechanism (401) is used to pick up and place the workpieces on the feeding platform (201) of the unloading station onto the second conveying mechanism (402).

9. The battery testing production line according to claim 8, characterized in that, The unloading device (400) also includes a recycling mechanism for recycling unqualified workpieces on the feeding platform (201) at the unloading station.

10. A battery testing method, applied to the battery testing production line according to any one of claims 1-9, characterized in that, The testing method includes: The first slide unit (11) and the second slide unit (12) respectively pre-correct the battery cells on their corresponding correction platforms, and respectively use the workpieces on the other two correction platforms as correction references, so that the multiple workpieces on the four correction platforms are divided into two groups. The two sets of workpieces are respectively placed on the two test platforms (303); The third slide unit (301) and the fourth slide unit (302) respectively perform secondary correction on a group of workpieces on their corresponding test stage (303); The two sets of test platforms (303) are used to test the corresponding set of workpieces.

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