BC battery test system
By designing an integrated BC battery testing system, the problems of inconvenient probe pin replacement, automated transmission deviation, and insufficient temperature control in existing technologies have been solved, achieving efficient and accurate battery testing and reducing costs and maintenance expenses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-24
AI Technical Summary
Existing solar cell testing equipment suffers from problems such as inconvenient probe row replacement, automated transmission deviation, high cost of multi-station testing, and low winter temperatures when testing BC cells, leading to inaccurate test results and high maintenance costs.
Design a BC battery testing system, including a test dark chamber, probe array, xenon lamp, test camera group and infrared temperature probe. The probe array has a vacuum adsorption hole group, the xenon lamp is located below the battery cell, the infrared temperature probe is located below the battery cell, the integrated power cabinet is connected to each component, and is equipped with a heated dark chamber to control the battery cell temperature, realizing the integration of IV, EL, PL and IR into the same system.
It improves the accuracy of test results, reduces probe bar replacement and maintenance costs, ensures that the cells are tested at 25°C, reduces automation investment and maintenance costs, and enhances the accuracy and consistency of testing.
Smart Images
Figure CN224037330U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic cell technical field, concretely relates to a BC battery test system. BACKGROUND
[0002] With the increasingly scarce of non-renewable resources, and some non-renewable resources in people's life and industrial production cause various pollution problems, therefore all countries are using various policy or legal means to gradually increase the development and utilization of renewable energy and clean energy, and strive to improve its proportion in the whole energy use. In clean and renewable energy, solar energy is one of the most important energy, and solar cell panel as the most important equipment in solar energy utilization, needs to strictly control the quality of each component to improve the utilization rate of solar energy and prolong the service life of solar cell panel.
[0003] In order to ensure the quality of the battery piece, the battery piece needs to be tested by current-voltage characteristics (Current Voltage, IV) test, electroluminescence (Electro Luminescence, EL) test, photoluminescence (Photoluminescence, PL) test, infrared spectrophotometry (Infrared Spectrophotometry, IR) test, etc. Through testing, the finished product battery is tested and sorted.
[0004] The existing solar cell test equipment usually uses a protractor to vacuum adsorb the battery piece, and then presses the battery piece upward to the high-transparency glass through the customized probe array, and then performs IV and EL tests.
[0005] However, in actual testing, the following problems may occur: 1. The BC battery is full back contact, and the operator needs to check the probe pressing point one by one in the narrow space at the bottom of the probe array when replacing the probe array, which delays the production capacity; 2. The automatic transmission distance of the battery piece is not the same, and after the automatic table surface is corrected, the temperature measuring point of the infrared temperature measuring probe deviates, which leads to the error of the measured battery temperature, and thus causes the deviation of the IV test; 3. Most of the current IR test and IV test are performed in sections, which requires the use of multiple automatic workstations and probe arrays, and the cost and later operation and maintenance cost are high; 4. The temperature of the standard piece is low in winter, and the test calibration temperature is generally 25℃, which is the best, and the low temperature of the standard piece will cause the deviation of the standard position. UTILITY MODEL CONTENTS
[0006] To solve at least one technical problem of the prior art, the utility model provides a BC battery test system.
[0007] To achieve the above utility model purposes, a technical scheme adopted by the utility model is as follows: a BC battery test system, comprising: a test dark box, having a test work station inside;
[0008] a probe array disposed in the test chamber and positioned above the test station, the probe array having a set of vacuum suction holes for suctioning a solar cell;
[0009] a xenon lamp disposed in the test chamber and positioned below the test station;
[0010] a test camera set disposed in the test chamber and positioned below the test station;
[0011] an infrared temperature measurement probe disposed in the test chamber and positioned below the test station; and
[0012] a test integrated power supply cabinet connected with the probe array, the xenon lamp, the test camera set and the infrared temperature measurement probe, respectively.
[0013] In some embodiments, the probe array comprises a plate body made of conductive metal, the plate body having a plurality of the set of vacuum suction holes disposed thereon, the set of vacuum suction holes comprising a plurality of vacuum suction holes arranged in a straight line.
[0014] In some embodiments, a lower surface of the plate body is provided with a plurality of N-zone test strips and a plurality of P-zone test strips, the plurality of N-zone test strips and the plurality of P-zone test strips being alternately arranged to form a test area of a solar cell, and a set of the vacuum suction holes being arranged between adjacent N-zone test strips and P-zone test strips.
[0015] In some embodiments, the probe array is coated with an insulating material between the N-zone test strips and the P-zone test strips, and the vacuum suction holes penetrate the insulating material.
[0016] In some embodiments, the probe array further comprises a plurality of probe groups, and a probe group is arranged below each of the N-zone test strips and each of the P-zone test strips.
[0017] In some embodiments, the test camera set comprises an EL camera, a PL camera and an infrared IR camera, and the EL camera, the PL camera and the infrared IR camera are arranged outside the xenon lamp.
[0018] In some embodiments, the BC battery test system further comprises a conveying device for conveying a solar cell to the test station.
[0019] In some embodiments, the BC battery test system further comprises a heating chamber, the heating chamber being arranged on a path of the conveying device to the test chamber and extending into the test chamber.
[0020] In some embodiments, the heating dark box is provided with a heating table top.
[0021] In some embodiments, the inner wall of the heating dark box is covered with thermal insulation material.
[0022] Compared with the prior art, the advantages of the utility model include:
[0023] 1、 the probe row of the BC battery test system of the utility model has vacuum adsorption hole group, when testing, the probe row can adsorb the battery piece with contact point position towards the probe row, thereby cancelling the front glass compression, reducing the test damage of the front glass compression to the battery piece, and the xenon lamp is located below the battery piece, so that the light source directly irradiates the battery surface, the working personnel is convenient to carry out probe alignment and compresses the battery piece, and the test result is more accurate.
[0024] 2、 the infrared temperature measurement probe of the BC battery test system of the utility model is arranged below the battery piece, the temperature measurement probe does not hit the risk point of the probe row, and the test accuracy is increased.
[0025] 3、 the utility model integrates IV, EL, PL and IR in the same system, uses the same station and the same probe row, reduces the early automatic investment and the later operation and maintenance cost.
[0026] 4、 the BC battery test system of the utility model is provided with a heating dark box, the heating dark box is used for heating the battery piece entering the test dark box, guarantees that the battery piece reaches the preset temperature and then enters the dark box, tries to make the test piece close to 25 DEG C and carries out IV test, and increases the test result accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 It is the connection schematic view of the BC battery test system of the utility model;
[0028] Figure 2 It is the probe row surface schematic view of the utility model. DETAILED DESCRIPTION
[0029] In order to enable the personnel in the art to better understand the present application scheme, the technical scheme in the present application embodiment will be described clearly and completely in combination with the drawings in the present application embodiment, obviously, the described embodiment is only a part of the embodiment of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.
[0030] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0032] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.
[0033] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
[0035] Reference Figure 1 and Figure 2The utility model provides a kind of BC battery test system, comprising: test dark box 1, probe row 2, xenon lamp 7, test camera group, infrared temperature measurement probe 3 and test integrated power supply cabinet 8, test dark box 1 inside end has test station, battery piece 11 is completed test at test station;Probe row 2 is arranged in test dark box 1 and is located above test station, probe row 2 has the vacuum adsorption hole group for adsorbing battery piece 11, when testing, probe row 2 can adsorb battery piece 11 transported to test station;Xenon lamp 7 is arranged in test dark box 1 and is located below test station, the irradiation range of xenon lamp 7 covers battery piece 11 adsorbed by probe row 2;Test camera group is arranged in test dark box 1 and is located below test station, for imaging test to battery piece 11;Infrared temperature measurement probe 3 is arranged in test dark box 1 and is located below test station;Test integrated power supply cabinet 8 is connected with probe row 2, xenon lamp 7, test camera group and infrared temperature measurement probe 3 respectively.
[0036] In certain embodiments, probe row 2 includes plate body 20 made of conductive metal, plate body 20 is provided with multiple rows of vacuum adsorption hole groups, vacuum adsorption hole group is composed of multiple vacuum adsorption holes 21 arranged along a straight line at intervals, battery piece 11 is adsorbed by multiple vacuum adsorption holes 21.
[0037] In certain embodiments, the lower surface of plate body 20 is provided with multiple N-zone test strips 23 and multiple P-zone test strips 22, multiple N-zone test strips 23 and multiple P-zone test strips 22 are alternately arranged to form the test area of solar cell, and a row of vacuum adsorption hole groups is arranged between adjacent N-zone test strips 23 and P-zone test strips 22. Wherein, N-zone test strips 23 and P-zone test strips 22 are both formed by gold-plated contact coating coated on the surface of plate body. By contacting multiple N-zone test strips 23 and multiple P-zone test strips 22 on the lower surface of plate body with battery piece 11, the contact area is increased, the front glass compression is cancelled, the test damage of battery piece caused by front glass compression is reduced, and meanwhile, multiple N-zone test strips 23 and multiple P-zone test strips 22 contacting battery piece 11 can be compatible with the test of battery piece with multiple BC patterns.
[0038] In certain embodiments, probe row 2 is coated with insulating material between N-zone test strips 23 and P-zone test strips 22, and vacuum adsorption holes 21 penetrate the insulating material.
[0039] In some embodiments, the probe row 2 further comprises a plurality of probe groups, and each probe group is composed of a plurality of probes. Each N area test strip 23 is provided with a probe group below, and each P area test strip 22 is provided with a probe group below. The probe group is connected with the integrated power cabinet 8, and the integrated power cabinet 8 is provided with an IV test system. During testing, the battery piece 11 with the contact point upward is adsorbed by the plate body, and then the integrated power cabinet 8 is powered on to the plurality of probe groups. The voltage and current in the probe are transmitted to the battery piece 11 through the gold-plated contact coating, and the IV test system tests the electrical performance of the battery piece 11 and collects the electrical performance data of the battery piece 11.
[0040] In some embodiments, the test camera group package EL camera 4, PL camera 5 and infrared IR camera 6, and the EL camera 4, PL camera 5 and infrared IR camera 6 are arranged outside the xenon lamp 7.
[0041] In some embodiments, the BC battery test system further comprises a conveying device 12 for conveying the battery piece 11 to the test station.
[0042] In some embodiments, the BC battery test system further comprises a heating dark box 9, and the heating dark box 9 is arranged on the path of the conveying device 12 to the test dark box 1 and extends into the test dark box 1.
[0043] In some embodiments, the heating dark box 9 is provided with a heating table 10.
[0044] In some embodiments, the inner wall of the heating dark box 9 is covered with thermal insulation material.
[0045] The test process of the BC battery test system of the utility model is as follows: 1, the battery piece 11 is conveyed to the heating dark box 9 by the conveying device 12, and the battery piece 11 is heated to 25 DEG C ± 1 DEG C by the heating table 10 inside the heating dark box 9, so as to reduce the heat loss in the conveying process;
[0046] 2, the heated battery piece 11 is conveyed to the test station by the conveying device 12, and the battery piece 11 is adsorbed by the probe row 2;
[0047] 3, the xenon lamp 7 is opened, the test integrated power cabinet 8 is powered on to the plurality of probe groups, the voltage and current in the probe are transmitted to the battery piece 11 through the gold-plated contact coating, and the IV test system in the test integrated power cabinet 8 collects the electrical performance data of the battery piece 11;
[0048] 4, after the electrical performance data of the battery piece 11 is collected, the EL camera 4 collects the EL imaging of the finished battery 11, and after the collection is completed, the PL camera 5 collects the PL imaging of the battery piece;
[0049] 5. Finally, the integrated power supply cabinet 8 is tested to the battery piece 11 into reverse, by IR camera to collect battery piece 11 thermal imaging, and store file.
[0050] The probe row of the BC battery test system has a vacuum adsorption hole group, and when testing, the probe row can adsorb the battery piece 11 with the contact point position facing the probe row, so that the front glass compression is cancelled, the test damage of the front glass compression to the battery piece is reduced, and the xenon lamp is located below the battery piece 11, so that the light source directly irradiates the battery surface, the working personnel can conveniently carry out probe alignment and compression of the battery piece, and the test result is more accurate; the infrared temperature measurement probe of the BC battery test system is arranged below the battery piece 11, the temperature measurement probe does not hit the risk point of the probe row, and the test accuracy is increased; the BC battery test system integrates IV, EL, PL and IR in the same system, uses the same station and the same probe row, reduces the early automatic investment and the later operation and maintenance cost.
[0051] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to the above-described embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the above-described embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A BC battery test system, characterized by, The BC battery test system comprises: a test dark box (1) having a test station inside; a probe array (2) arranged in the test dark box (1) and above the test station, the probe array (2) having a set of vacuum suction holes for suction of a battery sheet (11); a xenon lamp (7) arranged in the test dark box (1) and below the test station; a test camera group arranged in the test dark box (1) and below the test station; an infrared temperature measurement probe (3) arranged in the test dark box (1) and below the test station; and a test integrated power supply cabinet (8) connected with the probe array (2), the xenon lamp (7), the test camera group and the infrared temperature measurement probe (3) respectively.
2. The BC battery test system of claim 1, wherein, The probe array (2) comprises a plate body (20) made of conductive metal, and a plurality of sets of vacuum suction holes are arranged on the plate body (20), each set of vacuum suction holes comprising a plurality of vacuum suction holes (21) arranged in a straight line.
3. The BC battery test system of claim 2, wherein, A lower surface of the plate body (20) is provided with a plurality of N-zone test strips (23) and a plurality of P-zone test strips (22), the N-zone test strips (23) and the P-zone test strips (22) being arranged alternately to form a test area of a solar cell, and a set of vacuum suction holes is arranged between adjacent N-zone test strips (23) and P-zone test strips (22).
4. The BC battery test system of claim 3, wherein, The probe array (2) is coated with an insulating material between the N-zone test strips (23) and the P-zone test strips (22), and the vacuum suction holes (21) penetrate the insulating material.
5. The BC battery test system of claim 3, wherein, The probe array (2) further comprises a plurality of probe groups, and a probe group is arranged below each N-zone test strip (23) and each P-zone test strip (22).
6. The BC battery test system of claim 1, wherein, The test camera group comprises an EL camera (4), a PL camera (5) and an infrared IR camera (6), and the EL camera (4), the PL camera (5) and the infrared IR camera (6) are arranged outside the xenon lamp (7).
7. The BC battery test system of claim 1, wherein, The BC battery test system further comprises a conveying device (12) for conveying the battery sheet (11) to the test station.
8. The BC battery test system of claim 7, wherein, The BC battery test system further comprises a heating dark box (9) arranged on a path of the conveying device (12) to the test dark box (1) and extending into the test dark box (1).
9. The BC battery test system of claim 8, wherein, The heating dark box (9) is provided with a heating table (10) inside.
10. The BC battery test system of claim 9, wherein, An inner wall of the heating dark box (9) is covered with thermal insulation material.