WO2023045390A1 - 太阳能电池片的测试装置 - Google Patents
太阳能电池片的测试装置 Download PDFInfo
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- WO2023045390A1 WO2023045390A1 PCT/CN2022/096262 CN2022096262W WO2023045390A1 WO 2023045390 A1 WO2023045390 A1 WO 2023045390A1 CN 2022096262 W CN2022096262 W CN 2022096262W WO 2023045390 A1 WO2023045390 A1 WO 2023045390A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Definitions
- the present application relates to the field of solar cells, in particular to a testing device for solar cells.
- solar modules are usually composed of multiple solar cells to obtain higher power generation.
- the performance of individual solar cells packaged in the same solar module should be relatively close, otherwise it will have a negative impact on the overall performance of the solar module. Therefore, the performance test of each solar cell must be carried out before the solar module is packaged, so that the solar cells can be graded, and the solar cells of the same grade can be packaged into a solar module.
- back-contact solar cells Since there is no busbar on the front side of the back-contact solar cell (referred to as the cell), and the welding positions of the positive and negative electrodes are located on the same side of the cell, the shading of the cell is reduced, thereby improving the conversion efficiency of the cell.
- back-contact solar cells have been widely used. Similarly, to assemble multiple back-contact solar cells into a solar module, performance testing of individual cells is also required.
- the performance of a single cell is tested by a test device with a back contact solar cell.
- the supporting platform absorbs the cell downwards, and the test probe pushes the cell upward, which will offset part of the adsorption force, and there may be incomplete contact between the test probe and the electrode of the cell, which affects the accuracy of the test. .
- the embodiment of the present application provides a test device for solar cells to solve the problem of low test accuracy due to the incomplete contact between the test probe and the electrode of the cell in the test device for the back-contact solar cell in the related art technical issues.
- test device for solar cells including: a test platform, a light source, a pressing platform and a plurality of test probes;
- the test platform is used to support the battery sheet to be tested, and the test platform is provided with a plurality of first through holes, one of the test probes corresponds to one of the first through holes, and each of the test probes is respectively pierced corresponding to the first through hole, so as to be in contact with the cell to be tested;
- the press-down platform is a light-transmitting structure, and is located on the surface of the battery sheet to be tested away from the test platform;
- the side of the press-down platform away from the test platform is provided with the light source, or the side of the press-down platform away from the test platform and the side of the test platform away from the press-down platform are respectively provided With the light source, the pressing platform is used to press down the battery sheet under test, so that the battery sheet under test is attached to the test platform.
- the test device for solar cells has the following advantages:
- the embodiment of the present application adds a pressing platform.
- the pressing platform is located on the surface of the cell to be tested away from the test platform.
- the pressing platform is used to press down the cell to be tested.
- the pressing platform is more Pressing down on the cell to be tested can at least counteract part of the upward force of the test probe, so that the cell to be tested can be better attached to the test platform, thereby improving the accuracy of the test.
- FIG. 1 shows one of the schematic diagrams of a test device for a solar cell provided in the embodiment of the present application, wherein a light source is provided on one side of the test platform;
- Fig. 2 shows the second schematic diagram of a test device for a solar cell provided in the embodiment of the present application, wherein there are light sources on both sides of the test platform;
- Fig. 3 is a schematic diagram showing a perspective view of a pressing platform in a test device for solar cells provided by an embodiment of the present application.
- 10 Test platform; 11: First through hole; 20: Press down platform; 21: Second through hole; 22: Pick-up port; 30: Test probe; 40: Cell to be tested; 50-light source; 60- Standard cell.
- a test device for solar cells (test device for short) is provided.
- the test device may specifically include: The test probe 30; the test platform 10 is used to support the cell 40 to be tested, the test platform 10 is provided with a plurality of first through holes 11, one test probe 30 corresponds to a first through hole 11, and each test probe 30 is respectively Pierced through the corresponding first through hole 11 to contact with the battery sheet 40 to be tested; the pressing platform 20 is a light-transmitting structure, and is located on the surface of the battery sheet 40 to be tested away from the test platform 10; the pressing platform 20 is away from the test platform 10 One side of the platform 10 is provided with a light source 50, or the side of the pressing platform 20 away from the test platform 10 and the side of the testing platform 10 away from the pressing platform 20 are respectively provided with a light source 50, and the pressing platform 20 is used for pressing down.
- the battery slice 40 is tested so that the battery slice 40 to be tested is attached to the test platform 10 .
- the test platform 10 is used to support the cell 40 to be tested, as shown in Figures 1 and 2, with reference to the orientation shown in the figure, the cell 40 to be tested is placed above the test platform 10, and the platform 20 is pressed down.
- the battery piece 40 to be tested is on the surface away from the test platform 10 , that is, the pressing platform 20 is located above the battery piece 40 to be tested.
- the pressing down platform 20 is used for pressing down the battery piece 40 to be tested, that is, the pressing down platform 20 exerts a downward force on the battery piece 40 to be tested.
- the battery sheet 40 to be tested in this embodiment may be a back-contact solar battery sheet, and the welding positions of the positive and negative electrodes of the back-contact solar battery sheet are located on the same side of the back-contact solar battery sheet. As shown in FIG. 1 and FIG. 2 , the welding positions of the positive and negative electrodes of the battery sheet 40 to be tested in this embodiment are located on the lower surface of the battery sheet 40 to be tested, therefore, the test probes 30 are located below the battery sheet 40 to be tested.
- the test platform 10 is provided with a plurality of first through holes 11, and the plurality of first through holes 11 are arranged at intervals, and one test probe 30 corresponds to one first through hole 11, and each test probe 30 is respectively installed in the The corresponding first through hole 11 is used to contact with the battery piece 40 to be tested. After contacting, each test probe 30 can be electrically connected with the battery piece 40 to be tested, so as to detect the performance of the battery piece 40 to be tested.
- the testing accuracy will decrease if the test probe 30 is biased or not in good contact.
- the test probe 30 pushes the side battery piece upwards, since the pressing platform 20 of this embodiment can apply a downward force to the battery piece 40 to be tested, it can offset at least part of the test probe 30 upward force, so that the battery sheet 40 to be tested can be better attached to the test platform 10, thereby improving the accuracy of the test.
- the light source 50 is used to irradiate light to the cell under test 40 to simulate sunlight, so that the test probe 30 can test the performance of the cell under test 40 under light.
- the side of the pressing platform 20 away from the test platform 10 is provided with a light source 50, that is, the top of the pressing platform 20 is provided with a light source 50, or the side of the pressing platform 20 away from the testing platform 10 and the testing platform 10 are away from the described Light sources 50 are respectively provided on one side of the pressing platform 20 , that is, light sources 50 are provided above the pressing platform 20 and below the testing platform 10 . It can be seen that the light source 50 can be arranged on the upper side or the upper and lower sides of the test platform 10 in this embodiment.
- the light source 50 is located on the upper side of the test platform 10, the performance of the upper surface of the battery sheet 40 to be tested is tested when it receives light; if the light source 50 If it is arranged on both sides of the test platform 10, the performance of the upper surface and the lower surface of the battery sheet 40 under test can be tested when it receives light. Whether the light source 50 is arranged on one side or both sides of the test platform 10 can be set according to actual needs in this embodiment, and this embodiment may not limit it.
- the pressing platform 20 of this embodiment is a light-transmitting structure, selected from light-transmitting materials with a light transmittance greater than or equal to 90%. , preferably greater than or equal to 95%.
- the pressing platform 20 may be made of quartz material or other light-transmitting materials with a light transmittance greater than or equal to 90%.
- light-transmitting materials can be selected such as glass materials with light transmittance greater than or equal to 90%; organic polymer materials with light transmittance greater than or equal to 90%, such as polymethyl methacrylate, polystyrene (Polystyrene, PS), polycarbonate Any one of ester (Polycarbonate, PC) and polydiallyl diglycol carbonate.
- the material of the test platform 10 is related to the installation position of the light source 50 .
- the test platform 10 is made of a light-transmitting material, which has a good transmittance to light with a wavelength of 300-1100nm, and any light-transmitting material that meets this condition can be used.
- select light transmittance materials greater than or equal to 90% which can be the same as the material type of the press platform 20, or different; but preferably the same as the material type of the press platform 20, so that Evaluation of the overall test results.
- the material of the test platform 10 can be a non-transparent material, such as aviation aluminum material or other materials that can be applied to test the performance of solar cells.
- the testing device of the solar battery sheet also includes: a vacuum absorber; the test platform 10 is provided with an absorber hole, the vacuum absorber is connected with the absorber hole, and the vacuum absorber is used to extract the gas in the absorber hole, so that The battery sheet 40 to be tested is adsorbed on the test platform 10 .
- the test platform 10 is provided with an adsorption hole, and the connecting pipe of the vacuum adsorption member communicates with the adsorption hole, and the gas in the adsorption hole is drawn out, so that the test platform 10 has vacuum adsorption capacity, so that the cell 40 to be tested can be adsorbed on the test platform. 10, thereby improving the accuracy of the test.
- the vacuum absorber may be a vacuum pump or other devices having the same function as the vacuum pump.
- the adsorption holes include a plurality of first adsorption holes and second adsorption holes arranged at intervals; in the vertical direction, the test platform 10 includes opposite first surfaces and second surfaces, and the first surface is close to the lower surface. Press platform 20, each first adsorption hole runs through the second surface from the first surface; the second adsorption hole passes through the other side wall from one side wall of the test platform 10, one side wall is opposite to the other side wall, and a second The adsorption holes correspond to one first adsorption hole, and the second adsorption holes communicate with the corresponding first adsorption holes respectively, and are respectively connected with the vacuum adsorption pieces.
- a plurality of first adsorption holes are arranged at intervals. Since the battery sheet 40 to be tested is usually a cube, the shape of the test platform 10 usually matches the shape of the battery sheet 40 to be tested and is also a cube. In the vertical direction, the test platform 10 includes a first surface (the upper surface shown in the figure) and a second surface (the lower surface shown in the figure) opposite to each other, and each first adsorption hole penetrates the lower surface from the upper surface respectively. The second adsorption hole runs through the other side wall from one side wall of the test platform 10, and one side wall is opposite to the other side wall.
- the test platform 10 can include four side walls, left side wall, right side wall, The front side wall and the rear side wall, the left side wall and the right side wall are opposite, the front side wall is opposite to the rear side wall, part of the second adsorption holes can penetrate the right side wall from the left side wall, and part of the second adsorption holes can pass through the front side wall Through the rear side wall.
- one second adsorption hole corresponds to one first adsorption hole, and each second adsorption hole communicates with the corresponding first adsorption hole.
- the vacuum absorber may include a plurality of communicating pipes, and one communicating pipe communicates with a second absorbing hole, so that the vacuum absorbing member sequentially draws out the vacuum in the second absorbing hole and the first absorbing hole, so that the test platform 10 has Vacuum adsorption capacity.
- This embodiment is set in this way to avoid that if the connecting pipe is connected from above or below the test platform 10, it will affect the adhesion of the battery sheet 40 to be tested attached to the test platform 10 and the light-receiving area of the battery sheet 40 to be tested, thereby affect the accuracy of the test.
- At least one first adsorption hole is usually provided on the four corners of the test platform 10 opposite to the battery sheet 40 to be tested, and the second adsorption hole is arranged near the first adsorption hole, so that the second adsorption hole and the first adsorption hole
- the communication channel between the first adsorption holes is relatively short, which is convenient for quickly extracting the vacuum in the second adsorption hole and the first adsorption hole through the vacuum adsorption piece, which can save time and also save production costs;
- the four corners of 40 are adsorbed on the test platform 10, which can make the position of the cell 40 to be tested more stable.
- the pressing platform 20 in the vertical direction, is provided with a plurality of second through holes 21;
- the suction piece is connected, and the vacuum suction piece is also used to blow air into each second through hole 21, so that the battery piece 40 to be tested is adsorbed on the test platform 10, or helps the battery piece 40 to be tested to be separated from the test platform 10 .
- a plurality of second through holes 21 are arranged at intervals, and penetrate from the upper surface of the pressing down platform 20 to the lower surface thereof.
- a connecting pipe of the vacuum absorber communicates with a second through hole 21, and blows air into each second through hole 21, and it is positive pressure, so as to form a downward effect on the cell sheet 40 to be tested.
- At least part of the upward force of the test probe 30 can be counteracted, so that the battery sheet 40 to be tested can be better attached to the test platform 10, thereby improving the accuracy of the test.
- the test platform 10 and the test probe 30 need to be removed at the same time.
- the battery slice 40 to be tested will be removed together with the test platform 10 , resulting in a banding phenomenon.
- the stripping phenomenon refers to the fact that the air between the contact surface of the battery sheet 40 to be tested and the test platform 10 is squeezed out to form a negative pressure during the test.
- the test platform 10 and the test probe 30 are removed simultaneously after the test is completed, the test The vacuum adsorption of the platform 10 is difficult to quickly pull the test cell 40 away from the test platform 10.
- the test probe 30 can only be moved first, and after a certain amount of gas is naturally filled between the test cell 40 and the test platform 10, On the mobile test platform 10, although the accuracy of the test can be guaranteed, the speed of the test is reduced.
- the vacuum absorber still blows air into the second through hole 21 to fill the gap between the battery piece 40 to be tested and the test platform 10 with gas, so that the battery piece 40 to be tested can be quickly removed from the test platform 10.
- the waiting time is extremely short, at least it can be shortened from about 2.5S to 1-1.3S in the prior art, which avoids the banding phenomenon of the test platform 10, thereby effectively reducing the fragmentation rate.
- the pressing down platform 20 is generally a cuboid.
- the pressing down platform 20 is respectively provided with second through holes 21 at positions opposite to the four corner regions of the cell sheet 40 to be tested, so that the connecting pipes of the vacuum absorber can be easily communicated, and the It can avoid blocking the working area of the battery sheet 40 to be tested to receive light.
- the specific setting positions of the plurality of second through holes 21 are not limited to the above examples.
- the pressing platform 20 is provided with the second through holes 21 at positions opposite to the four corner regions of the battery sheet 40 to be tested.
- the second through hole 21 can also be set at the position where the pressing platform 20 is opposite to the central area of the battery sheet 40 to be tested; or, the second through hole 21 can be set at a position where the pressing platform 20 is opposite to the central area of the battery sheet 40 to be tested , and respectively set second through holes 21 at positions opposite to each diagonal line of the battery sheet 40 to be tested, and two second through holes 21 are symmetrically set at positions opposite to each diagonal line; or, press down on the platform 20
- a second through hole 21 is arranged at a position opposite to the central area of the battery sheet 40 to be tested.
- the center of the second through hole 21 is the center of a circle, and three, four, five, six and eight equal numbers are arranged around the center of the circle.
- the second through hole 21, the specific value of the distance between the center of the circle and the second through hole 21 (which can be understood as the radius) is not limited, and can be set according to actual conditions, wherein the surrounding second through hole 21
- the number of four and eight is the preferred solution, so that the battery sheet 40 to be tested can be subjected to a more balanced downward force, so that the battery sheet 40 to be tested can be better attached to the upper surface of the test platform 10 .
- the specific arrangement positions and numbers of the plurality of second through holes 21 may not be limited in this embodiment, and may be specifically set according to actual conditions.
- the holding port 22 is provided on the pressing platform 20 , and the taking port 22 is used for taking the battery slice 40 to be tested.
- At least one access opening 22 is provided on the pressing platform 20 , and the access opening 22 is arranged vertically and penetrates the lower surface from the upper surface of the pressing platform 20 .
- the test device is abnormal, such as downtime, etc., the cell 40 to be tested can be manually taken out from the taking port 22, and the weight of the pressing platform 20 can be reduced for installation and transportation.
- the shape of the orthographic projection of the pressing platform 20 on the testing platform 10 is a rectangle.
- Four access openings 22 are provided on the lower pressing platform 20. With reference to the center of the lower pressing platform 20 relative to the battery sheet 40 to be tested, the four access openings 22 are arranged around the center, and one access opening 22 corresponds to and is close to a rectangular In the illustration, the distances between each access port 22 and the corresponding variable can be completely equal or not completely equal. In the figure, the distance between the left access port 22 and the left side of the rectangle is the distance between the right access port 22 and the right access port 22. The distances to the right of the rectangles are not equal.
- the pressing down platform 20 is respectively provided with second through holes 21 at the positions opposite to the four corner regions of the cell sheet 40 to be tested, and the pressing down platform 20 is at the corners between two adjacent taking ports 22 .
- the upper region is provided with a second through hole 21 .
- the length of the access port 22 is greater than the distance between the two second through holes 21 on the same side, so that while blowing air to the four corner regions of the battery sheet 40 to be tested through the second through holes 21, it can also The battery sheet 40 to be tested can be taken out from the taking port 22 .
- the testing device of the solar battery sheet also includes: the testing device of the solar battery sheet also includes: a machine platform, a bracket and a fixing frame; the bracket is fixed on the machine platform, and the light source 50 is installed on the bracket; multiple test The probe 30 is fixed on a fixed frame, and the fixed frame is slidably connected to the machine table along the vertical direction.
- the bracket can be fixed on the machine table by means of welding, fastener connection and the like.
- the light source 50 can be detachably installed on the bracket, so as to facilitate the installation of the detachable light source 50 .
- a plurality of test needles can be fixed on the fixed frame, and the fixed frame can be slidably connected to the machine table along the vertical direction (up and down direction).
- the machine platform includes two vertical plates, and the fixed frame is arranged between the two vertical plates.
- One end is provided with a second slide block, one vertical plate is provided with a first chute on the surface close to the fixed frame, and the other vertical plate is provided with a second chute on the surface close to the fixed frame, and the two chutes are arranged vertically , the first slider is slidably arranged in the first chute, and the second slider is slidably arranged in the second chute.
- the two slides respectively slide up and down in the corresponding chute to drive the fixing frame to slide up and down, thereby driving the test probe 30 to slide up and down, that is, the test probe 30 can be close to or away from the lower surface of the cell 40 to be tested.
- the test device of the solar battery sheet also includes: a positioning member, a control system and a first driving assembly;
- the positioning member is arranged on the bracket for collecting the positioning information of the battery piece 40 to be tested, and the first driving assembly is connected to the fixed frame;
- the control system is electrically connected with the positioning piece and the driving assembly respectively, and controls The system is also used to control the first driving assembly to drive the fixing frame to move or rotate according to the acquired positioning information of the battery slice 40 to be tested, so as to adjust the position of the test probe 30 .
- the control system can calculate the performance of the battery piece 40 to be tested according to the first electrical parameter (current and voltage, etc.) acquired in real time. parameter.
- the test device of this embodiment further includes: a standard battery sheet 60 , which is used to calibrate the radiation intensity of the light source 50 .
- the standard cell 60 is attached to the upper surface of the test platform 10. After the standard cell 60 is irradiated by the light source 50, it will generate a second electrical parameter.
- the control system is also connected with the standard cell 60 and the light source 50 to obtain The second electric parameter, thereby calculates the performance parameter (for example electric quantity) of standard battery piece 60, and judges whether this electric quantity reaches preset value, if not reached, then explain that the irradiance intensity of light source 50 is insufficient, and control system then needs to adjust light source 50 irradiance until the power of the standard cell 60 reaches a preset value; after adjusting the irradiance of the light source 50, the control system calculates the performance parameters of the battery 40 to be tested (such as the power , power, etc.), and compared with the preset performance parameter range, to determine whether the calculated performance parameter of the battery sheet 40 to be tested is within the preset performance parameter range (such as the preset power range, power range, etc.), if it is in , the cell 40 to be tested meets the requirements, otherwise, the cell 40 to be tested does not meet the requirements.
- the performance parameter for example electric quantity
- the standard cell 60 can be a double-sided light-receiving type cell or a single-piece light-receiving type cell. If the light source 50 is only set above the test platform 10, the standard cell 60 adopts a single-piece light-receiving type cell. If the light source 50 is provided above and below the test platform 10, the standard cell 60 is a double-sided light-receiving cell.
- the positioning member may be an optical positioning device, such as a camera, usually a CCD (Charge-coupled Device, charge-coupled device) camera.
- the camera can capture the location information (laser mark) information on the battery sheet 40 to be tested, and send it to the control system; the control system calculates the location information of the battery sheet 40 to be tested according to the obtained location information after analysis, if If it does not match the preset position information, the first drive assembly is controlled to drive the fixed frame to move or rotate until it matches the preset position information.
- the test probe 30 is located at the preset target position. Each test probe 30 is in contact with the corresponding positive or negative pole of the cell 40 to be tested. This process is to fine-tune the test probes 30.
- the main purpose is to correct the position of the test probes 30 to improve the accuracy of the test.
- the position information may include information such as the area of the battery to be tested, the number of electrodes, the distance between adjacent electrodes, and the displacement of the battery to be tested 40 relative to the test platform 10, and the laser mark on the battery to be tested 40 can be Different marks are used to mark the center, edge line, positive and negative welding positions of the battery sheet 40 to be tested, and the control system pre-stores the information corresponding to the different marks, reference points, and the corresponding position information of the battery sheet 40 to be tested. relation.
- the first drive assembly may include two first linear motors, the two first linear motors are respectively fixed on the machine table, and one first linear motor is connected to one end of the fixing frame, and the other first linear motor A linear motor is connected to the other end of the fixed frame, and the two first linear motors simultaneously drive the corresponding end of the fixed frame to move, thereby driving the fixed frame to move.
- the test device can also include: a first turntable, the first drive assembly also includes a first rotating motor; the first turntable is rotatably arranged on the machine table, the first rotating shaft can be set on the machine table, and the first turntable can be fixed Sleeved on the first rotating shaft, the lower ends of the two vertical plates are fixed on the first turntable; the first rotating motor is respectively connected with the control system and the first rotating shaft, and the control system can drive the first rotating motor to drive the first rotating shaft to rotate, and The first rotation is driven to rotate, thereby driving the fixing frame to rotate, and further driving the test probe 30 to rotate.
- the two first linear motors may also be respectively fixed on the two vertical plates.
- the specific installation position of the first linear motors may not be limited in this embodiment, and may be set according to actual conditions.
- the two first linear motors can be replaced by a rotating motor and a transmission mechanism.
- the transmission mechanism can convert rotary motion into linear motion, such as a rack and pinion mechanism, a screw nut and other mechanisms.
- the rotating motor can be connected with a gear, the gear is meshed with the rack, the rack is fixed on the fixed frame, the rotating motor drives the gear to rotate, and drives the rack to move, thereby driving the fixed frame to move;
- Sleeved on the lead screw the fixed frame is connected with the nut, and the rotating motor drives the lead screw to rotate, and drives the nut to move, thereby driving the fixed frame to move.
- the test device for the solar cells further includes: a second driving assembly; the second driving assembly is connected to the pressing platform 20, and the pressing platform 20 is also used for absorbing the battery sheet 40 to be tested, and the positioning member is also used for It is used to collect the positioning information of the pressing platform 20; the control system is electrically connected with the second driving assembly, and is also used to control the second driving assembly to drive the pressing platform 20 to move according to the acquired positioning information of the pressing platform 20, so as to drive the The cells 40 move or rotate.
- the pressing platform 20 can absorb the battery piece 40 to be tested, so that the battery piece 40 to be tested will move along with the movement of the pressing platform 20 .
- the second through hole 21 and the access port 22 on the pressing platform 20 are set according to the target position of the battery piece 40 to be tested, therefore, the second through hole 21 and the access port 22 can be used as the battery cell to be tested. Therefore, the second through hole 21 and the access port 22 can be marked with a laser mark.
- the control system judges that the position information of the battery sheet 40 to be tested does not match the preset position information, the control system obtains the positioning information of the pressing platform 20, and controls the second driving component to drive the pressing platform 20 to move or rotate according to the positioning information. Until the position information of the battery slice 40 to be tested matches the preset position information, the test probe 30 can be in contact with the battery slice 40 to be tested, thereby improving the accuracy of the test.
- the test device may also include: a second turntable, the second driving assembly includes a second rotary motor and a second linear motor; the second turntable is rotatably arranged on the machine table, and a second Rotating shaft, the second turntable can be fixedly sleeved on the second rotating shaft, and one end of the pressing platform 20 is provided with a connector and a third slider; the connector is fixedly sleeved on the second rotating shaft, and the second rotating motor and the second The rotating shaft is connected, and the control system is also connected with the second rotating motor.
- the control system can also drive the second rotating motor to drive the second rotating shaft to rotate, and drive the connecting piece to rotate, thereby driving the pressing down platform 20 to rotate, and then driving the cell 40 to be tested to rotate.
- the second rotating shaft is provided with a third chute, the third chute is set along the vertical direction, the third slider is slidably arranged in the third chute, and is connected with the second rotating motor, and the control system is also connected with the second linear
- the motor is connected, and the control system can also drive the second linear motor to drive the third slider to move in the vertical direction, thereby driving the pressing down platform 20 to move, and then driving the battery sheet 40 to be tested to move.
- a flexible buffer layer is provided on the surface of the pressing platform 20 close to the testing platform 10 .
- the pressing platform 20 is close to the surface of the testing platform 10, that is, a flexible buffer layer is fixed on the surface of the pressing platform 20 in contact with the battery sheet 40 to be tested, and the flexible buffer layer It can be a transparent flexible material.
- the flexible buffer layer can be arranged on the area where the lower surface of the pressing platform 20 is not opposite to the battery sheet 40 to be tested.
- the testing device for solar cells further includes: a rotary table; the rotary table is rotatably arranged on the machine platform, and the test platform 10 is arranged on the rotary table.
- the test device also includes a third driving part
- the machine table is provided with a third rotating shaft
- the rotary table is fixedly sleeved on the third rotating shaft
- the third driving part includes a third rotating motor
- the third rotating motor is respectively connected to
- the third rotating shaft is connected with the control system, and the control system can also drive the third rotating motor to rotate, thereby driving the third rotating shaft to rotate, and further driving the rotary table to rotate.
- test platform 10 can be set on the rotary table by means of fasteners or welding, and the test platform 10 can rotate with the rotation of the rotary table.
- three stations namely, loading station, testing station and unloading station
- the three stations are set in sequence on the track where the rotating table drives each working platform, and the three stations are arranged along the circumferential direction of the rotating table.
- the three working platforms will all move to the testing station, therefore, the structure of each working platform is the same as that of the above-mentioned testing platform 10 .
- the rotating worktable drives each working platform to rotate sequentially in the horizontal plane, which can increase the speed of testing.
- the cell 40 to be tested is placed on the working platform corresponding to the feeding station; the rotary table drives the working platform to rotate 90 degrees under the drive of the third rotating motor.
- the station rotates to the test station; during testing, the first rotating motor can first rotate the fixed frame to a position corresponding to the work platform, and then the two first linear motors drive the fixed frame to move upward until the test probe 30 and The lower surface of the battery piece 40 to be tested is in contact, and finally the second rotating motor can drive the pressing platform 20 to rotate to a position opposite to the battery piece 40 to be tested, and then the second linear motor drives the pressing platform 20 to move to the position opposite to the battery piece 40 to be tested.
- the second linear motor drives the pressing platform 20 to move upward
- the first linear motor drives the fixing frame to move downward to release the battery sheet 40 to be tested
- the third The rotating motor continues to drive the working platform to rotate 90 degrees.
- the battery piece 40 to be tested is rotated from the testing station to the blanking station, and then the battery piece 40 to be tested is taken out, and the cycle is performed sequentially.
- stations can also be added, for example, a waiting station can be added between the loading station and the testing station.
- the rotary table drives the rotation track of each working platform to set four station positions in sequence, namely, loading station, waiting station, test station and unloading station.
- the four stations work along the rotation. Evenly arranged in the circumferential direction of the table rotation.
- the test device is also provided with an alarm, and the control system is connected to the alarm. If an abnormality occurs in the test device, the control system controls the alarm to sound an alarm, and controls the test device to be closed so that the operator can take it out from the taking port 22.
- the battery slice 40 to be tested is also provided with an alarm, and the control system is connected to the alarm.
- the test device for solar cells has the following advantages:
- the test device for the solar battery sheet includes: a test platform, a light source, a press-down platform and a plurality of test probes; the test platform is used to support the battery sheet to be tested, and a plurality of first Through holes, one test probe corresponds to a first through hole, and each test probe is respectively pierced through the corresponding first through hole to contact with the cell to be tested; the pressing platform is a light-transmitting structure, and is located The side of the pressing platform away from the testing platform is provided with a light source, or the side of the pressing platform away from the testing platform and the side of the testing platform away from the pressing platform are respectively provided with a light source, and the pressing platform It is used to press down the cell to be tested so that the cell to be tested can be attached to the test platform.
- the present embodiment adds a pressing platform, which is located on the surface of the cell to be tested away from the test platform, and the pressing platform presses down on the cell to be tested, which can at least offset part of the The upward force of the test probe enables the cell under test to be better attached to the test platform, thereby improving the accuracy of the test.
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Abstract
本申请提供了一种太阳能电池片的测试装置，包括：测试平台、光源、下压平台和多个测试探针；测试平台用于支撑待测电池片，测试平台上设有多个第一通孔，一个测试探针对应一个第一通孔，各测试探针分别穿设于对应的第一通孔，以与待测电池片接触；下压平台为透光结构，并位于待测电池片远离测试平台的表面上；下压平台远离测试平台的一侧设有光源，或者，下压平台远离测试平台的一侧和测试平台远离下压平台的一侧分别设有光源，下压平台用于下压待测电池片，以使待测电池片贴附于测试平台上。本实施例增加了下压平台，下压平台向下压待测电池片，至少可以抵消部分测试探针向上的作用力，以使待测电池片能够更好地贴附于测试平台上。
Description
相关申请的交叉引用
本公开要求在2021年9月27日提交中国专利局、申请号为202111141270.0、名称为“太阳能电池片的测试装置”的专利申请，以及2021年10月13日提交中国专利局、申请号为202122471894.0、名称为“太阳能电池片的测试装置”的专利申请的优先权，其全部内容通过引用结合在本公开中。
本申请涉及太阳能电池领域，具体涉及一种太阳能电池片的测试装置。
目前，太阳能组件通常由多个太阳能电池片组成，以获得较高的发电功率。封装在同一个太阳能组件内的单个太阳能电池片的性能要比较接近，否则会对太阳能组件的整体性能产生负面影响。因此，太阳能组件在封装前必须对每个太阳能电池片进行性能测试，以便将太阳能电池片分档，将同一档位的太阳能电池片封装成太阳能组件。
由于背接触太阳能电池片(简称电池片)的正面没有主栅线，且其正负极的焊接位位于电池片的同一面，减少了电池片的遮光，从而提高了电池片的转换效率，因此，背接触太阳能电池片得到了广泛的应用。同样地，要将多个背接触太阳能电池片组装成太阳能组件，也需要对单个电池片进行性能测试。
现有技术中，通过背接触太阳能电池片的测试装置测试单个电池片的性能。然而，在现有测试装置中，支撑平台向下吸附电池片，测试探针向上顶电池片，会抵消部分吸附力，可能存在测试探针与电池片的电极接触不完全，影响测试的准确性。
发明内容
本申请实施例提供了一种太阳能电池片的测试装置，以解决相关技术中 背接触太阳能电池片的测试装置，由于存在测试探针与电池片的电极接触不完全而导致的测试准确性较低的技术问题。
为了解决上述技术问题，本申请是这样实现的：
本申请实施例提供了一种太阳能电池片的测试装置，包括：测试平台、光源、下压平台和多个测试探针；
所述测试平台用于支撑待测电池片，所述测试平台上设有多个第一通孔，一个所述测试探针对应一个所述第一通孔，各所述测试探针分别穿设于对应的所述第一通孔，以与所述待测电池片接触；
所述下压平台为透光结构，并位于所述待测电池片远离所述测试平台的表面上；
所述下压平台远离所述测试平台的一侧设有所述光源，或者，所述下压平台远离所述测试平台的一侧和所述测试平台远离所述下压平台的一侧分别设有所述光源，所述下压平台用于下压所述待测电池片，以使所述待测电池片贴附于所述测试平台上。
在本申请实施例中，所述的太阳能电池片的测试装置具有以下优点：
本申请实施例增加了下压平台，下压平台位于待测电池片远离测试平台的表面上，下压平台用于下压待测电池片，与现有的测试装置相比，下压平台向下压待测电池片，至少可以抵消部分测试探针向上的作用力，以使待测电池片能够更好地贴附于测试平台上，从而提高测试的准确性。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1表示本申请实施例提供的一种太阳能电池片的测试装置的示意图之一，其中，测试平台的一侧有光源；
图2表示本申请实施例提供的一种太阳能电池片的测试装置的示意图之二，其中，测试平台的两侧有光源；
图3表示本申请实施例提供的一种太阳能电池片的测试装置中的下压平台一个视角的示意图。
附图标记：
10：测试平台；11：第一通孔；20：下压平台；21：第二通孔；22：拿取口；30：测试探针；40：待测电池片；50-光源；60-标准电池片。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
在本申请实施例中，提供了一种太阳能电池片的测试装置(简称测试装置)，参照图1和图2，测试装置具体可以包括：测试平台10、光源50、下压平台20和多个测试探针30；测试平台10用于支撑待测电池片40，测试平台10上设有多个第一通孔11，一个测试探针30对应一个第一通孔11，各测试探针30分别穿设于对应的第一通孔11，以与待测电池片40接触；下压平台20为透光结构，并位于待测电池片40远离测试平台10的表面上；下压平台20远离测试平台10的一侧设有光源50，或者，下压平台20远离测试平台10的一侧和测试平台10远离下压平台20的一侧分别设有光源50，下压平台20用于下压待测电池片40，以使待测电池片40贴附于测试平台10上。
具体而言，测试平台10用于支撑待测电池片40，如图1和图2所示，以图示的方位为参考，待测电池片40放置于测试平台10的上方，下压平台20待测电池片40远离测试平台10的表面上，也即，下压平台20位于待测电池 片40的上方。下压平台20用于下压待测电池片40，也即，下压平台20向待测电池片40施加向下的作用力。
具体而言，本实施例的待测电池片40可以为背接触太阳能电池片，背接触太阳能电池片的正负电极的焊接位位于背接触太阳能电池片的同一侧。如图1和图2所示，本实施例的待测电池片40的正负极的焊接位位于待测电池片40下表面，因此，测试探针30位于待测电池片40的下方。
具体而言，测试平台10上设有多个第一通孔11，多个第一通孔11间隔设置，一个测试探针30对应一个第一通孔11，各测试探针30分别穿设于对应的第一通孔11，以与待测电池片40接触，接触后，各测试探针30可以与待测电池片40电性导通，从而检测待测电池片40的性能。
实际中，测试探针30压偏或接触不好，都会使测试的准确性下降。与现有技术相比，虽然测试探针30向上顶带侧电池片，由于本实施例的下压平台20可以向待测电池片40施加向下的作用力，其至少可以抵消部分测试探针30向上的作用力，以使待测电池片40能够更好地贴附于测试平台10上，从而提高测试的准确性。
具体而言，光源50是为了向待测电池片40照射光线，模拟太阳光，以使测试探针30测试待测电池片40在受光时的性能。下压平台20远离测试平台10的一侧设有光源50，也即，下压平台20的上方设有光源50，或者，下压平台20远离测试平台10的一侧和测试平台10远离所述下压平台20的一侧分别设有光源50，也即，下压平台20的上方和测试平台10的下方都设有光源50。可见，本实施例测试平台10的上侧或者上下两侧都可以设置光源50，若光源50位于测试平台10的上侧，则测试待测电池片40的上表面受光时的性能；若光源50设置于测试平台10的两侧，则可以测试待测电池片40的上表面和下表面受光时的性能。对于光源50设置在测试平台10的一侧还是两侧，本实施例可以根据实际需求进行设定，本实施例对此可以不做限定。
具体而言，为了不影响待测电池片40的受光，以使测试的准确性更好，本实施例的下压平台20为透光结构，选自透光率大于等于90％的透光材料，优选大于等于95％，例如：下压平台20可以为石英材料或透光率大于等于90％的其他透光材料。其他透光材料可选择例如透光率大于等于90％的玻璃材料；透光率大于等于90％的有机高分子材料，例如聚甲基丙烯酸甲酯、聚苯乙烯 (Polystyrene，PS)、聚碳酸酯(Polycarbonate，PC)和聚双烯丙基二甘醇碳酸酯中的任一种。
具体而言，测试平台10的材料与光源50的设置位置相关。若光源50设置于测试平台10的两侧，测试平台10采用透光材料制成，透光材料对300～1100nm波长的光具有良好的透射率，满足该条件的透光材料均可，可在前述下压平台20材料类型中，选择透光率大于等于90％的透光材料，具体可以与下压平台20材料类型相同，也可以不同；但是优选与下压平台20的材料类型相同，以便于整体的测试结果评价。若光源50只设置于测试平台10的上方，测试平台10的材料可以为非透光材料，例如航空铝材料或其他可以应用于测试太阳能电池片性能场景的材料。
在本申请实施例中，太阳能电池片的测试装置还包括：真空吸附件；测试平台10设有吸附孔，真空吸附件与吸附孔连接，真空吸附件用于抽出吸附孔中的气体，以使待测电池片40吸附于测试平台10上。
具体而言，测试平台10设有吸附孔，真空吸附件的连接管与吸附孔连通，抽出吸附孔中气体，使得测试平台10具有真空吸附能力，从而可以将待测电池片40吸附于测试平台10的上表面，进而提高测试的准确性。其中，真空吸附件可以为真空泵或者与真空泵具有相同作用的其他器件。
在本申请实施例中，吸附孔包括多个间隔设置的第一吸附孔和第二吸附孔；在竖直方向上，测试平台10包括相对的第一表面和第二表面，第一表面靠近下压平台20，各第一吸附孔分别从第一表面贯穿第二表面；第二吸附孔从测试平台10的一个侧壁贯穿另一个侧壁，一个侧壁与另一个侧壁相对，一个第二吸附孔对应一个第一吸附孔，各第二吸附孔分别与对应的第一吸附孔连通，且分别与真空吸附件连接。
具体而言，多个第一吸附孔间隔设置，由于待测电池片40通常为正方体，测试平台10的形状通常与待测电池片40的形状相匹配，也为正方体。在竖直方向上，测试平台10包括相对的第一表面(图示的上表面)和第二表面(图示的下表面)，各第一吸附孔分别从上表面贯穿下表面。第二吸附孔从测试平台10的一个侧壁贯穿另一个侧壁，一个侧壁与另一个侧壁相对，示例性的，测试平台10可以包括四个侧壁，左侧壁、右侧壁、前侧壁和后侧壁，左侧壁和右侧壁相对，前侧壁与后侧壁相对，部分第二吸附孔可以从左侧壁贯穿右 侧壁，部分第二吸附孔可以从前侧壁贯穿后侧壁。
具体而言，一个第二吸附孔对应一个第一吸附孔，且各第二吸附孔分别与对应的第一吸附孔连通。在实际中，真空吸附件可以包括多个连通管，一个连通管与一个第二吸附孔连通，这样，真空吸附件依次抽出第二吸附孔和第一吸附孔内的真空，使得测试平台10具有真空吸附能力。本实施例这样设置，是为了避免连接管若从测试平台10的上方或下方接入，影响待测电池片40贴附于测试平台10的贴合性以及待测电池片40的受光面积，从而影响测试的准确性。
优选地，通常在测试平台10与待测电池片40相对的四个角区域分别设置至少一个第一吸附孔，第二吸附孔设置于第一吸附孔的附近，这样，第二吸附孔与第一吸附孔之间的连通通道较短，便于通过真空吸附件快速抽出第二吸附孔和第一吸附孔内的真空，可以节省时间，也就节省了生产成本；并且，通过将待测电池片40的四个角区域吸附于测试平台10上，可以使待测电池片40的位置更加稳固。
在本申请实施例中，参照图3，在竖直方向上，下压平台20设有多个第二通孔21；多个第二通孔21间隔设置，各第二通孔21分别与真空吸附件连接，真空吸附件还用于向各第二通孔21内吹气，以使待测电池片40吸附于测试平台10上，或者，助于待测电池片40从测试平台10上脱离。
具体而言，多个第二通孔21间隔设置，且从下压平台20的上表面贯穿其下表面。在测试的情况下，真空吸附件的一个连接管与一个第二通孔21连通，并向各第二通孔21内吹气，且为正压，以对待测电池片40形成向下的作用力，至少可以抵消部分测试探针30向上的作用力，以使待测电池片40能够更好地贴附于测试平台10上，从而提高测试的准确性。
现有技术中，在测试完成后，测试平台10和测试探针30同时需要移开，移开时，待测电池片40会随同测试平台10一起移开，产生带片现象。带片现象指的是由于测试时待测电池片40与测试平台10的接触面之间的空气被挤出形成了负压，测试完成后测试平台10和测试探针30同时移开时，测试平台10的真空吸附很难将待测电池片40从测试平台10上迅速拉开，一般只能先移动测试探针30，等待测电池片40与测试平台10之间自然填充一定的气体后，在移动测试平台10，这样虽然可以保证测试的准确度，但降低了测 试的速度。本实施例中，当测试完成后，真空吸附件依然向第二通孔21内吹气，以向待测电池片40与测试平台10之间填充气体，使得可以迅速将待测电池片40从测试平台10上拉开，等待的时间极短，至少可以现有技术中大约2.5S缩短至1-1.3S，避免了测试平台10的带片现象，从而有效降低了碎片率。
具体而言，下压平台20通常为长方体。示例性的，如图3所示，下压平台20在与待测电池片40的四个角区域相对的位置分别设置第二通孔21，这样，可以便于真空吸附件的连接管连通，也可以避免遮挡待测电池片40的工作区域受光。当然，多个第二通孔21的具体设置位置也不局限于上述举例，例如：下压平台20除了在与待测电池片40的四个角区域相对的位置分别设置第二通孔21外，还可以在下压平台20与待测电池片40的中心区域相对的位置设置第二通孔21；或者，在下压平台20与待测电池片40的中心区域相对的位置设置第二通孔21，并在与待测电池片40各条对角线相对的位置分别设置第二通孔21，与每条对角线相对的位置对称设置两个第二通孔21；或者，在下压平台20与待测电池片40的中心区域相对的位置设置第二通孔21，该第二通孔21的中心为圆心，环绕该圆心设置三个、四个、五个、六个和八个等数目的第二通孔21，圆心与第二通孔21之间的距离(可以理解为半径)的具体数值不做限定，具体可以根据实际情况进行设定，其中，环绕的第二通孔21的数目为四个和八个为优选方案，这样，可以使待测电池片40上受到更加均衡的向下的作用力，使待测电池片40可以更好地贴附于测试平台10的上表面。对于多个第二通孔21的具体设置位置和数目，本实施例可以不做限定，具体可以根据实际情况进行设定。
在本申请实施例中，下压平台20上设有拿取口22，拿取口22用于拿取待测电池片40。
具体而言，下压平台20上设有至少一个拿取口22，拿取口22竖直设置，且从下压平台20的上表面贯穿下表面。在测试装置出现异常时，例如宕机等情况，可以通过人工将待测电池片40从拿取口22取出，并且还可以对下压平台20减重，以便安装和搬运。
示例性的，如图3所示，为下压平台20在测试平台10上的正投影形状，为矩形。下压平台20上设有四个拿取口22，以下压平台20相对待测电池片 40的中心为参考，四个拿取口22围绕该中心设置，一个拿取口22对应且靠近一个矩形的边，图示中，各拿取口22分别与对应的变之间的距离可完全相等，也可以不完全相等，图中左拿取口22距离矩形左边的距离与右拿取口22距离矩形右边的距离不相等。图中设置四个拿取口22，人工可以先分别从四个拿取口22将待测电池片40的四个角区域与测试平台10分离，然后在从其中一种拿取口22取出待测电池片40，以确保待测电池片40的完整性。需要说明的是们对于拿取口22的具体设置数目和设置位置，本实施例可以不做限定，具体可以根据实际情况进行设定，不局限于图示的结构。
如图3所示，下压平台20在与待测电池片40的四个角区域相对的位置分别设置第二通孔21，下压平台20在相邻两个拿取口22之间的角部区域设有第二通孔21。实际应用中，拿取口22的长度大于同一侧的两个第二通孔21之间的距离，以便通过第二通孔21向待测电池片40的四个角区域吹风的同时，还可以使从拿取口22可以将待测电池片40取出。
在本申请实施例中，太阳能电池片的测试装置还包括：太阳能电池片的测试装置还包括：机台、支架和固定架；支架固定于机台上，光源50安装于支架上；多个测试探针30固定于固定架上，固定架沿竖直方向滑动连接于机台。
具体而言，支架可以通过焊接、紧固件连接等方式固定于机台上。光源50可以可拆卸地安装于支架上，以方便安装可拆卸光源50。多个测试针可以固定于固定架上，固定架可以沿竖直方向(上下方向)滑动地连接于机台。例如机台包括两块立板，固定架设置于两块立板之间，在测试平台10的长度方向(图示的左右)上，固定架的一端设有第一滑块，固定架的另一端设有第二滑块，一块立板靠近固定架的表面上设有第一滑槽，另一块立板靠近固定架的表面上设有第二滑槽，两个滑槽沿竖直方向设置，第一滑块滑动设置于第一滑槽内，第二滑块滑动设置于第二滑槽内。两个滑动分别在对应的滑槽内上下滑动，以带动固定架上下滑动，从而带动测试探针30上下滑动，也即，测试探针30可靠近或远离待测电池片40的下表面。需要说明的是，对于固定架滑动连接于机台的实现方式，除了上述举例外，还可以为其他方式：例如：滑轨与滚轮的配合等，本实施例此可以不做限定，具体可以根据实际情况进行设定。
在本申请实施例中，太阳能电池片的测试装置还包括：定位件、控制系统和第一驱动组件；各测试探针30分别与控制系统连接，控制系统还用于获取测试探针30检测的待测电池片40的电参数；定位件设置于支架上，用于采集待测电池片40的定位信息，第一驱动组件与固定架连接；控制系统分别与定位件和驱动组件电连接，控制系统还用于根据获取的待测电池片40的定位信息，控制第一驱动组件驱动固定架移动或转动，以调整测试探针30的位置。
具体而言，当待测电池片40被光源50照射后，会产生第一电参数，控制系统可以根据实时获取的第一电参数(电流和电压等)，计算出待测电池片40的性能参数。
实际应用中，为了检测待测电池片40的性能参数是否符合要求，本实施例的测试装置还包括：标准电池片60，标准电池片60用于校准光源50的辐照强度。具体地，标准电池片60贴附于测试平台10的上表面，标准电池片60在被光源50照射后，会产生第二电参数，控制系统还与标准电池片60和光源50连接，以获取第二电参数，从而计算出标准电池片60的性能参数(例如电量)，并判断该电量是否达到预设值，如果未达到，则说明光源50的辐照强度不足，控制系统则需要调节光源50的辐照照度，直至标准电池片60的电量达到预设值；调整好光源50的辐照强度后，控制系统根据获取的第一电参数计算出待测电池片40的性能参数(例如电量、功率等)，并与预设的性能参数范围进行对比，判断计算的待测电池片40的性能参数是否在预设性能参数范围(例如预设的电量范围、功率范围等)内，如果在，待测电池片40符合要求，如不在，待测电池片40不符合要求。
需要说明的是，标准电池片60可以为双面受光型电池片或单片受光型电池片，若光源50只设置在测试平台10的上方，则标准电池片60采用单片受光型电池片，若测试平台10的上方和下方都设有光源50，则标准电池片60为双面受光型电池片。
具体而言，定位件可以为光学定位器件，例如相机，通常采用CCD(Charge-coupled Device，电荷耦合元件)相机。相机可以抓取待测电池片40上的定位信息(激光mark)信息，并将其发送给控制系统；控制系统根据获取的定位信息，经过分析后计算出待测电池片40的位置信息，若其与预设位 置信息不匹配，则控制第一驱动组件驱动固定架移动或转动，直至其与预设位置信息匹配为止，此时，测试探针30位于预设目标位置，在预设目标位置，各测试探针30分别与待测电池片40对应的正极或负极接触，该过程是对测试探针30进行微调，主要目的是为了校正测试探针30的位置，以提高测试的准确度。其中，位置信息可以包括待测电池面的面积、电极的数量、相邻电极之间的距离、以及待测电池片40相对测试平台10的位移等信息，待测电池片40上的激光mark可以采用不同的标记，标示出待测电池片40的中心、边缘线、正负极焊接位等，控制系统中提前预存不同标记所对应的信息、参考点以及计算待测电池片40位置信息的对应关系。
示例性的，第一驱动组件可以包括两个第一直线电机，两个第一直线电机分别固定于机台上，并且，一个第一直线电机与固定架的一端连接，另一个第一直线电机与固定架的另一端连接，两个第一直线电机同时驱动固定架对应的端部移动，从而驱动固定架移动。测试装置还可以包括：第一转动台，第一驱动组件还包括第一旋转电机；第一转动台可转动的设置于机台上，机台上可以设置第一转轴，第一转动台可以固定套设于第一转轴上，两个立板的下端固定于第一转台上；第一旋转电机分别与控制系统和第一转轴连接，控制系统可以驱动第一旋转电机驱动第一转轴转动，并带动第一转动转动转动，从而带动固定架转动，进而带动测试探针30转动。其中，两个第一直线电机也可以分别固定于两个立板上，对于第一直线电机的具体设置位置，本实施例可以不做限定，具体可以根据实际情况进行设定。
需要说明的是，两个第一直线电机可以通过旋转电机和传动机构替代，实际中，传动机构可以将旋转运动转化为直线运动，例如齿轮齿条机构、丝杠螺母等机构。例如，旋转电机可以与齿轮连接，齿轮与齿条啮合，齿条固定于固定架上，旋转电机驱动齿轮转动，并带动齿条移动，从而带动固定架移动；旋转电机可以与丝杠连接，螺母套设于丝杠上，固定架与螺母连接，旋转电机驱动丝杠转动，并带动螺母移动，从而带动固定架移动。
在本申请实施例中，太阳能电池片的测试装置还包括：第二驱动组件；第二驱动组件与下压平台20连接，下压平台20还用于吸附待测电池片40，定位件还用于采集下压平台20的定位信息；控制系统与第二驱动组件电连接，还用于根据获取的下压平台20的定位信息，控制第二驱动组件驱动下压平台 20运动，以带动待测电池片40移动或转动。
具体而言，下压平台20可以吸附待测电池片40，这样，待测电池片40会随下压平台20的运动而运动。在实际中，下压平台20上的第二通孔21和拿取口22是根据待测电池片40的目标位置设置的，因此，第二通孔21和拿取口22可以作为待测电池片40位置定位的参照使用，因此可以对第二通孔21和拿取口22标识激光mark。控制系统在判断待测电池片40的位置信息与预设位置信息不匹配，控制系统获取下压平台20的定位信息，并根据该定位信息控制第二驱动组件驱动下压平台20移动或转动，直至待测电池片40的位置信息与预设位置信息匹配为止，以使测试探针30可以与待测电池片40接触，从而提高测试的准确性。
示例性的，测试装置还可以包括：第二转动台，第二驱动组件包括第二旋转电机和第二直线电机；第二转动台可转动的设置于机台上，机台上可以设置第二转轴，第二转动台可以固定套设于第二转轴上，下压平台20的一端设有连接件和第三滑块；连接件固定套设于第二转轴上，第二旋转电机与第二转轴连接，控制系统还与第二旋转电机连接，控制系统还可以驱动第二旋转电机驱动第二转轴转动，并带动连接件转动，从而带动下压平台20转动，进而带动待测电池片40转动；第二转轴上设有第三滑槽，第三滑槽沿竖直方向设置，第三滑块滑动设置于第三滑槽内，且与第二旋转电机连接，控制系统还与第二直线电机连接，控制系统还可以驱动第二直线电机带动第三滑块沿竖直方向移动，从而带动下压平台20移动，进而带动待测电池片40移动。
在本申请实施例中，在竖直方向上，下压平台20靠近测试平台10的表面上设有柔性缓冲层。
实际中，为了防止待测电池片40受损，下压平台20靠近测试平台10的表面，也即，下压平台20与待测电池片40接触的表面上固定有柔性缓冲层，柔性缓冲层可以为透明的柔性材质，为了不影响待测电池片40受光，柔性缓冲层可以设置在下压平台20侧下表面不与待测电池片40相对的区域。
在本申请实施例中，太阳能电池片的测试装置还包括：旋转工作台；旋转工作台可转动地设置于机台上，测试平台10设置于旋转工作台上。
具体而言，测试装置还包括第三驱动件，机台上设有第三转轴，旋转工作台固定套设于第三转轴上，第三驱动件包括第三旋转电机，第三旋转电机 分别与第三转轴和控制系统连接，控制系统还可以驱动第三旋转电机转动，从而带动第三转轴转动，进而带动旋转工作台转动。
在实际中，测试平台10可以通过紧固件或者焊接等方式设置于旋转工作台上，测试平台10可以随旋转工作台的转动而转动。
实际中，旋转工作台带动各个工作平台转动的轨迹上依次顺序设置有上料工位、测试工位和下料工位三个工位位置，三个工位沿旋转工作台转动的圆周方向上均匀布置，也即，旋转工作台沿其转动的圆周方向上均匀设置有三个工作平台，其中，位于测试工位的工作平台称为测试平台10。实际中，三个工作平台都会移动至测试工位，因此，各工作平台的结构均与上述测试平台10的结构相同。旋转工作台带动各个工作平台在水平面内依次循环转动，可以提高测试的速度。
本实施例的太阳能电池片的测试装置的工作过程为：
首先将待测电池片40放置在上料工位对应的工作平台上；旋转工作台在第三旋转电机的驱动下带动该工作平台转转90度，此时，待测电池片40从上料工位转动至测试工位；测试时，第一旋转电机可以先将固定架转动至与该工作平台对应的位置，然后两个第一直线电机驱动固定支架向上移动，直至测试探针30与待测待测电池片40的下表面接触，最后第二旋转电机可以先驱动下压平台20转动至与待测电池片40相对的位置，然后第二直线电机驱动下压平台20移动至与待测电池片40的上表面接触的位置；测试完成后，第二直线电机驱动下压平台20向上移动，第一直线电机驱动固定架向下移动，以松开待测电池片40；第三旋转电机继续驱动该工作平台转转90度，此时，待测电池片40从测试工位转动至下料工位，然后取出待测电池片40，依次循环进行。
需要说明的是，根据实际需求可以除了上料工位、测试工位和下料工位三个工位外，还可以增加工位，例如在上料工位和测试工位之间增加等待工位，此时，旋转工作台带动各个工作平台转动的轨迹上依次顺序设置有上料工位、等待工位、测试工位和下料工位四个工位位置，四个工位沿旋转工作台转动的圆周方向上均匀布置。
具体而言，测试装置还设有报警器，控制系统与报警器连接，若测试装置出现异常，控制系统控制报警器发出警报声，并控制测试装置关闭，以便 操作人员可以从拿取口22取出待测电池片40。
在本申请实施例中，所述的太阳能电池片的测试装置具有以下优点：
在本申请实施例中，太阳能电池片的测试装置，包括：测试平台、光源、下压平台和多个测试探针；测试平台用于支撑待测电池片，测试平台上设有多个第一通孔，一个测试探针对应一个第一通孔，各测试探针分别穿设于对应的第一通孔，以与待测电池片接触；下压平台为透光结构，并位于待测电池片远离测试平台的表面上；下压平台远离测试平台的一侧设有光源，或者，下压平台远离测试平台的一侧和测试平台远离下压平台的一侧分别设有光源，下压平台用于下压待测电池片，以使待测电池片贴附于测试平台上。可见，与现有的测试装置相比，本实施例增加了下压平台，下压平台位于待测电池片远离测试平台的表面上，下压平台向下压待测电池片，至少可以抵消部分测试探针向上的作用力，以使待测电池片能够更好地贴附于测试平台上，从而提高测试的准确性。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
尽管已描述了本申请实施例的可选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括可选实施例以及落入本申请实施例范围的所有变更和修改。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体与另一个实体区分开来，而不一定要求或者暗示这些实体之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的物品或者终端设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的物品或者终端设备中还存在另外的相同要素。
以上对本申请所提供的技术方案进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，同时，对于本领域的一般技术人 员，依据本申请的原理及实现方式，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本申请的限制。
Claims (12)
- 一种太阳能电池片的测试装置，其特征在于，包括：测试平台、光源、下压平台和多个测试探针；所述测试平台用于支撑待测电池片，所述测试平台上设有多个第一通孔，一个所述测试探针对应一个所述第一通孔，各所述测试探针分别穿设于对应的所述第一通孔，以与所述待测电池片接触；所述下压平台为透光结构，并位于所述待测电池片远离所述测试平台的表面上；所述下压平台远离所述测试平台的一侧设有所述光源，或者，所述下压平台远离所述测试平台的一侧和所述测试平台远离所述下压平台的一侧分别设有所述光源，所述下压平台用于下压所述待测电池片，以使所述待测电池片贴附于所述测试平台上。
- 根据权利要求1所述的太阳能电池片的测试装置，其特征在于，所述太阳能电池片的测试装置还包括：真空吸附件；所述测试平台设有吸附孔，所述真空吸附件与所述吸附孔连接，所述真空吸附件用于抽出所述吸附孔中的气体，以使所述待测电池片吸附于所述测试平台上。
- 根据权利要求2所述的太阳能电池片的测试装置，其特征在于，所述吸附孔包括多个间隔设置的第一吸附孔和第二吸附孔；在竖直方向上，所述测试平台包括相对的第一表面和第二表面，所述第一表面靠近所述下压平台，各所述第一吸附孔分别从所述第一表面贯穿所述第二表面；所述第二吸附孔从所述测试平台的一个侧壁贯穿另一个侧壁，一个所述侧壁与另一个所述侧壁相对，一个所述第二吸附孔对应一个所述第一吸附孔，各所述第二吸附孔分别与对应的所述第一吸附孔连通，且分别与所述真空吸附件连接。
- 根据权利要求2所述的太阳能电池片的测试装置，其特征在于，在竖直方向上，所述下压平台设有多个第二通孔；多个所述第二通孔间隔设置，各所述第二通孔分别与所述真空吸附件连接，所述真空吸附件还用于向各所述第二通孔内吹气，以使所述待测电池片 吸附于所述测试平台上，或者，助于所述待测电池片从所述测试平台上脱离。
- 根据权利要求1所述的太阳能电池片的测试装置，其特征在于，所述下压平台上设有拿取口，所述拿取口用于拿取所述待测电池片。
- 根据权利要求1所述的太阳能电池片的测试装置，其特征在于，所述太阳能电池片的测试装置还包括：机台、支架和固定架；所述支架固定于所述机台上，所述光源安装于所述支架上；多个所述测试探针固定于所述固定架上，所述固定架沿竖直方向滑动连接于所述机台。
- 根据权利要求6所述的太阳能电池片的测试装置，其特征在于，所述太阳能电池片的测试装置还包括：定位件、控制系统和第一驱动组件；各所述测试探针分别与所述控制系统连接，所述控制系统还用于获取所述测试探针检测的所述待测电池片的电参数；所述定位件设置于所述支架上，用于采集所述待测电池片的定位信息，所述第一驱动组件与所述固定架连接；所述控制系统分别与所述定位件和驱动组件电连接，所述控制系统还用于根据获取的所述待测电池片的定位信息，控制所述第一驱动组件驱动所述固定架移动或转动，以调整所述测试探针的位置。
- 根据权利要求7所述的太阳能电池片的测试装置，其特征在于，所述太阳能电池片的测试装置还包括：第二驱动组件；所述第二驱动组件与所述下压平台连接，所述下压平台还用于吸附所述待测电池片，所述定位件还用于采集所述下压平台的定位信息；所述控制系统与所述第二驱动组件电连接，还用于根据获取的所述下压平台的定位信息，控制所述第二驱动组件驱动所述下压平台移动或转动，以带动所述待测电池片移动或转动。
- 根据权利要求1或8所述的太阳能电池片的测试装置，其特征在于，在竖直方向上，所述下压平台靠近所述测试平台的表面上设有柔性缓冲层。
- 根据权利要求6所述的太阳能电池片的测试装置，其特征在于，所述太阳能电池片的测试装置还包括：旋转工作台；所述旋转工作台可转动地设置于所述机台上，所述测试平台设置于所述旋转工作台上。
- 根据权利要求1所述的太阳能电池片的测试装置，其特征在于，所述下压平台和/或所述测试平台包含选自透光率大于等于90％的透光材料。
- 根据权利要求11所述的太阳能电池片的测试装置，其特征在于，所述透光材料包含选自石英、玻璃、有机高分子材料中的任一种。
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