Photoelectric conversion rate detection device and detection machine for double half cells

Abstract

The utility model relates to a photoelectric conversion rate detection device and a detection machine for double half-piece batteries, the detection device comprises a rotary adsorption unit, a feeding lifting conveying device, a camera positioning unit, a probe detection unit and a discharging lifting conveying device, the probe detection unit comprises a lifting module, a deviation rectifying mechanism and a probe plate, and a light source is arranged above the probe plate. The detection machine further comprises a feeding conveying unit and a discharging conveying unit. The detection method comprises the steps of feeding, photographing and positioning, position adjustment, IV detection and discharging. According to the detection device, after the correction of the probe plate is completed, the battery piece is rotated in place, and the pressing test is directly carried out, so that the detection rhythm is fast, the detection requirement of the high-line-density battery piece with lines concentrated on a single surface can be met, and the photoelectric conversion rate detection result can be accurately obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical variable measurement, in particular to a double-half-cell battery photoelectric conversion rate detection device and a detection machine. Background Art

[0002] Photovoltaic conversion efficiency testing refers to the measurement of solar cell conversion efficiency. Under the premise of a fixed solar cell area and constant light intensity, the current-voltage output of the solar cell is measured and analyzed. Its purpose is to help classify solar cells into performance ranges. Only when the performance of solar cells is close can the photovoltaic module with the best conversion efficiency be obtained.

[0003] Half-cell batteries are manufactured as a single large panel and then need to be cut into two separate solar cells. Testing one cell at a time is inefficient, so testing both cells simultaneously is more efficient.

[0004] To increase the solar cell's frontal area receiving light, some solar cells place the conductive points for both the positive and negative electrodes on the back. This allows for testing the photoelectric conversion efficiency, with the front side facing upwards for light, while the back side is inspected. However, this introduces new challenges. Placing the conductive points on the same side means a higher line density within the same area, resulting in narrower line widths and greater difficulty in aligning the test probes. Furthermore, simultaneous testing of two half-cells further increases the difficulty of accurate positioning due to the uncertainty in the relative positions of the two halves.

[0005] Chinese patent CN 218841009U discloses a dual-half-cell efficiency testing device. This device utilizes a rotating platform to transport two cells to a testing station on one side of the original conveyor line for testing. The rotating platform has four stations. To ensure the length of the two cells remains unchanged before and after testing, the loading and unloading stations are located at 180° angles, resulting in wasted workstations opposite the testing stations. More importantly, the cells must be suctioned from above, then moved horizontally onto the rotating platform via a handling assembly. The rotating platform then brings the cells to the testing station. This process involves no precise positioning, resulting in a slow cycle and low positioning accuracy, making misjudgments more likely.

[0006] Therefore, it is necessary to improve the detection equipment to solve the above problems. Utility Model Content

[0007] A main purpose of the utility model is to provide a device for detecting the photoelectric conversion rate of two half-cell batteries, which can locate the positions of the two half-cell batteries before probe detection, and then use the probe to adapt to the posture of the half-cell batteries, so as to accurately obtain the photoelectric conversion rate detection results.

[0008] The utility model achieves the above-mentioned object through the following technical solutions: a double half-cell battery photoelectric conversion efficiency detection device, comprising a rotary adsorption unit, a loading and unloading lifting and conveying device located below and surrounding the rotary adsorption unit, a camera positioning unit, a probe detection unit, and a unloading and unloading lifting and conveying device;

[0009] The rotary adsorption unit includes a turntable that performs step-rotating motion, and a plurality of light-transmitting plates are provided on the turntable. The lower surface of the light-transmitting plates has a plurality of adsorption holes. When the light-transmitting plates adsorb the battery cells, they are in close contact with the upper surface of the battery cells.

[0010] The probe detection unit includes a lifting module, a correction mechanism driven by the lifting module to lift and lower, and a probe plate driven by the correction mechanism, and a light source is provided above the probe plate;

[0011] The loading lifting and conveying device and the unloading lifting and conveying device both include a lifting mechanism and a conveying module driven to rise and fall by the lifting mechanism.

[0012] Specifically, each light-transmitting plate is provided with two adsorption areas, and the probe detection units are two groups corresponding to the adsorption areas.

[0013] Furthermore, the correction mechanism includes a horizontal adjustment module and an angle adjustment module. The angle adjustment module drives the probe plate to rotate around the vertical axis, the horizontal adjustment module drives the angle adjustment module to translate in the horizontal plane, and the lifting module drives the horizontal adjustment module to lift and lower.

[0014] Furthermore, the camera positioning unit includes two groups of positioning cameras, each group of positioning cameras has four cameras distributed in a rectangular shape.

[0015] Another main purpose of the present invention is to provide a double half-cell battery photoelectric conversion rate detection machine, which can automatically feed in and out pairs of half-cell batteries and complete photoelectric conversion rate detection.

[0016] The present invention achieves the above-mentioned purpose through the following technical solution: a double half-cell battery photoelectric conversion rate detection machine, which also includes a loading conveying unit and a unloading conveying unit, the outlet of the loading conveying unit is connected to the loading lifting conveying device, and the inlet of the unloading conveying unit is connected to the unloading lifting conveying device.

[0017] Specifically, the loading and conveying unit includes a pair of loading belt lines, an interval adjustment transfer mechanism and several pairs of loading transition belt lines. The loading belt lines, the loading transition belt lines and the loading lifting and conveying device are arranged in sequence along the first horizontal direction. The interval adjustment transfer mechanism includes a translation module, a first pneumatic finger driven by the translation module to move along the first horizontal direction, and two loading suction cups driven by the two ends of the first pneumatic finger to move along the second horizontal direction. The first horizontal direction is the loading and conveying direction. The first horizontal direction is perpendicular to the second horizontal direction. The spacing between the two loading belt lines is greater than the spacing between the two loading transition belt lines.

[0018] Furthermore, the loading suction cup is provided with a loading sensor for sensing the position of the half-cell battery.

[0019] Furthermore, a group of first feeding and correcting mechanisms are provided on both sides of the conveying direction of each feeding belt line, and a group of second feeding and correcting mechanisms are provided on both sides of the feeding and conveying direction of the feeding transition belt line.

[0020] Specifically, the unloading conveying unit includes a pair of unloading transition belt lines, an interval adjustment mechanism, an adsorption rotation mechanism and a pair of unloading belt lines. The unloading lifting and conveying device, the unloading transition belt line and the unloading belt line are arranged in sequence along the first horizontal direction. The interval adjustment mechanism is located above the unloading transition belt line. The interval adjustment mechanism includes a second pneumatic finger and two first unloading suction cups driven by the two ends of the second pneumatic finger to move along the first horizontal direction. The adsorption rotation mechanism is located above the unloading belt line. The adsorption rotation mechanism includes a rotary motor and two second unloading suction cups driven by the rotary motor to rotate 90° around the vertical center axis. The spacing between the two unloading belt lines is greater than the spacing between the two unloading transition belt lines.

[0021] The beneficial effects of the technical solution of this utility model are:

[0022] 1. The battery cell first flows directly to the bottom of the turntable, and then is sucked up by a surface suction cup and rotated to the photo station for photography. The probe board at the detection station immediately uses the correction mechanism to adjust its position to correspond to the grid line of the battery cell; after the probe board correction is completed, the battery cell is also rotated into place and directly subjected to the press-fit test. Not only is the detection rhythm fast, but it can also adapt to the detection needs of high-line density battery cells with lines concentrated on a single side, and accurately obtain the photoelectric conversion rate test results.

[0023] 2. The loading and conveying unit is used to deliver two half-cell batteries to the loading station, and the unloading and conveying unit is used to remove the two half-cell batteries from the unloading station, realizing automatic loading and unloading for inspection.

[0024] 3. The process can quickly and accurately test the photovoltaic performance of two half-cell batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a double half-cell battery photoelectric conversion efficiency tester according to an embodiment;

[0026] Figure 2 A three-dimensional diagram of a device for detecting the photoelectric conversion rate of a double-half-cell battery according to an embodiment;

[0027] Figure 3 It is a top view of the rotary adsorption unit;

[0028] Figure 4 is a three-dimensional diagram of a probe detection unit;

[0029] Figure 5 It is a positional relationship diagram of the loading conveying unit and the loading lifting and conveying device;

[0030] Figure 6 It is a positional relationship diagram of the unloading conveying unit and the unloading lifting and conveying device;

[0031] Figure 7 for Figure 6 A partial enlarged view of position A in the middle.

[0032] The numbers in the figure represent:

[0033] 1-Dual half-cell battery photoelectric conversion rate tester,

[0034] 11-feeding conveying unit, 111-feeding conveying line, 112-interval adjustment transfer mechanism, 1121-translation module, 1122-first pneumatic finger, 1123-feeding suction cup, 1124-feeding sensor, 113-feeding transition belt line, 1124a-first feeding return mechanism, 1124b-second feeding return mechanism,

[0035] 12-Double half-cell battery photoelectric conversion rate detection device, 121-Rotary adsorption unit, 121a-Loading station, 121b-Photography station, 121c-Detection station, 121d-Unloading station, 1211-Turntable, 1212-Light-transmitting plate, 122-Camera positioning unit, 1221-Positioning camera, 123-Probe detection unit, 1231-Lifting module, 1232-Correcting mechanism, 12321-Horizontal adjustment module, 12322-Angle adjustment module, 1233-Probe board, 12331-Probe, 124a-Loading lifting and conveying device, 124b-Unloading lifting and conveying device, 1241-Lifting mechanism, 1242-Conveying module,

[0036] 13- unloading conveying unit, 131- unloading transition belt line, 132- interval adjustment mechanism, 1321- second pneumatic finger, 1322- first unloading suction cup, 133- adsorption rotary mechanism, 12331- rotary motor, 1332- second unloading suction cup, 134- unloading belt line;

[0037] 2-half cell battery. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to specific embodiments.

[0039] Example:

[0040] like Figure 1 As shown, a double half-cell battery photoelectric conversion efficiency detection machine 1 includes a loading and conveying unit 11 , a double half-cell battery photoelectric conversion efficiency detection device 12 and a unloading and conveying unit 13 .

[0041] The double half-cell battery photoelectric conversion efficiency detection device 12 is used for detecting the photoelectric conversion efficiency of the battery cell, and the loading and unloading conveying unit 11 and the unloading and unloading conveying unit 13 realize automatic loading and unloading for detection.

[0042] like Figure 2 、 Figure 3 and Figure 6As shown, the double-half-cell battery photoelectric conversion efficiency testing device 12 comprises a rotary suction unit 121, a surrounding loading and unloading lift conveyor 124a, a camera positioning unit 122, a probe detection unit 123, and a discharge lift conveyor 124b. The rotary suction unit 121 comprises a turntable 1211 that performs step-by-step rotation. Multiple light-transmitting plates 1212 are mounted on the turntable 1211. The lower surfaces of these plates have multiple suction holes, and the plates 1212 adhere tightly to the upper surfaces of the cells when they are attached. Each plate 1212 has two suction zones, and the probe detection units 123 are arranged in two groups corresponding to the suction zones. Both the loading and unloading lift conveyor 124a and the discharge lift conveyor 124b comprise a lifting mechanism 1241 and a conveying module 1242 driven by the lifting mechanism 1241. When the cell 2 reaches the double-half-cell photoelectric conversion efficiency detection device 12, the rotary adsorption unit 121 needs to be used to step-by-step switch the workstation. The detection surface of the cell 2 is located on the lower surface, so the light-transmitting plate 1212 needs to adsorb the cell 2 from top to bottom, so that when the probe 12331 is detecting, the light-transmitting plate 1212 can also resist the pressure of the probe 12331. The light-transmitting plate 1212 must have an adsorption function while not blocking light from reaching the light-receiving surface of the cell 2, so it must be transparent. Because the cell 2 is manufactured in groups of two, the light-transmitting plate 1212 needs to adsorb two cell 2 at a time and process them simultaneously. In this embodiment, four workstations are evenly distributed around the rotary adsorption unit 121. These four workstations, arranged in the same rotational direction, are the loading station 121a, the photographing station 121b, the inspection station 121c, and the unloading station 121d. The outlet of the loading conveyor unit 11 is connected to the loading lift conveyor 124a, which is located below the loading station 121a. The camera positioning unit 122 is located below the photographing station 121b. The probe inspection unit 123 is located below the inspection station 121c. The inlet of the unloading conveyor unit 13 is connected to the unloading lift conveyor 124b, which is located below the unloading station 121d. In actual applications, the number of workstations around the rotary adsorption unit 121 can be more than four. Each cell 2 is cut from a single sheet in the previous equipment. Therefore, when it flows into the loading and conveying unit 11, the two cells 2 move side by side along the conveying direction until they are delivered to the loading station 121a (the conveying module 1242 of the loading and lifting conveyor 124a). The lifting mechanism 1241 of the loading and lifting conveyor 124a then lifts the two cells 2 together and attracts them to the light-transmitting plate 1212 on the rotary suction unit 121. The rotary suction unit 121 is used to sequentially transport the two cells 2 to the imaging station 121b for positioning, the inspection station 121c for inspection, and the unloading station 121d for unloading. The camera positioning unit 122 captures the two cells 2 at the imaging station 121b from below, obtaining information on their actual position.The relative position uncertainty between the two battery cells 2 is relatively large, so two sets of correction mechanisms 1232 are required to correct the two probe plates 1233 separately, each adapting to the position of one battery cell 2. The correction mechanism 1232 can adjust the plane position (X-axis and Y-axis degrees of freedom) and vertical rotation angle (R-axis degree of freedom) of the probe plate 1233 based on the actual position information. The lifting module 1231 controls the lifting and lowering of the probe plate 1233 (Z-axis degree of freedom), so that the probes 12331 correctly contact the conductive points on the lower surfaces of the two battery cells 2. The light source is emitted from the upper part of the detection station 121c, illuminating the upper surface of the battery cell 2 with a stable light intensity through the light-transmitting plate 1212, thereby completing the photoelectric conversion rate detection and meeting the detection accuracy requirements of battery cells 2 with high density on single-sided circuits. The unloading conveying unit 13 will remove the two battery cells 2 from the unloading station 121c.

[0043] The battery cell 2 first flows directly to the bottom of the turntable 1211, and then the battery cell 2 is sucked up by a surface suction cup and rotated to the photo-taking station 121b for taking a photo. The probe board 1233 of the detection station 121c immediately uses the correction mechanism 1232 to adjust its position to correspond to the grid line of the battery cell 2; after the probe board 1233 completes the correction, the battery cell 2 is also rotated into place and directly subjected to the pressing test. Not only is the detection rhythm fast, but it can also adapt to the detection needs of the battery cell 2 with high circuit density concentrated on a single side, and accurately obtain the photoelectric conversion rate detection results.

[0044] like Figure 2 As shown, the camera positioning unit 122 includes two groups of positioning cameras 1221 , each group of positioning cameras 1221 has four cameras and are distributed in a rectangular shape.

[0045] Each group of four positioning cameras 1221 captures the four corners of the adsorption area respectively. Since the four corners of the adsorption area correspond to the four corners of the battery cell 2 , the deviation of the detected battery cell 2 from the standard position can be known, and then the adjustment amount of the probe 12331 can be determined.

[0046] like Figure 4 As shown, the probe detection unit 123 includes a lifting module 1231, a correction mechanism 1232 driven to lift and lower by the lifting module 1231, and a probe plate 1233 driven by the correction mechanism 1232. A plurality of probes 12331 are provided on the upper surface of the probe plate 1233, and a light source is provided above the probe plate 1233. The correction mechanism 1232 includes a horizontal adjustment module 12321 and an angle adjustment module 12322. The angle adjustment module 12322 drives the probe plate 1233 to rotate around the vertical axis, the horizontal adjustment module 12321 drives the angle adjustment module 12322 to translate in the horizontal plane, and the lifting module 1231 drives the horizontal adjustment module 12321 to lift and lower.

[0047] The probe plate 1234 has four degrees of freedom, namely the three coordinate directions and the vertical rotation angle, so that the position and angle of the probe plate 1234 can be adjusted. The distribution position of the probes 12331 on the probe plate 1234 corresponds to the position of the conductive points of the battery cell 2. However, in order to prevent misjudgment caused by inaccurate position of the battery cell 2, the position of the probe plate 1234 is adjusted to make the battery cell 2 and the probes 12331 accurately contact each other, under the premise that the deviation of the battery cell 2 has been determined by the positioning camera 1221. Because the positions of the two battery cells 2 are independent of each other, the actions of the two detection mechanisms are independent.

[0048] like Figure 5 As shown, the loading and conveying unit 11 includes a pair of loading belt lines 111, a spacing adjustment and transfer mechanism 112, and several pairs of loading transition belt lines 113. The loading belt lines 111, the loading transition belt lines 113, and the loading lifting and conveying device 124a are arranged in sequence along a first horizontal direction. The spacing adjustment and transfer mechanism 112 includes a translation module 1121, a first pneumatic finger 1122 driven by the translation module 1121 to move along the first horizontal direction, and two loading suction cups 1123 driven by the ends of the first pneumatic finger 1122 to move along the second horizontal direction. The loading suction cups 1123 are equipped with loading sensors 1124 for sensing the position of the battery cell 2. The first horizontal direction is the loading and conveying direction, which is perpendicular to the second horizontal direction. A set of first loading alignment mechanisms 1124a are installed on both sides of the conveying direction of each loading belt line 111, and a set of second loading alignment mechanisms 1124b are installed on both sides of the loading and conveying direction of the loading transition belt line 113. The distance between the two feeding belt lines 111 is greater than the distance between the two feeding transition belt lines 113 .

[0049] The loading and conveying unit 11 is used to deliver two battery cells 2 to the loading station 121a. In order to reduce the radius of the turntable 1211, the two battery cells 2 can be brought slightly closer before entering the loading station 121a. During this process, the interval adjustment transfer mechanism 112 will use two loading sensors 1124 to sense the position of the battery cell 2, and then the two loading suction cups 1123 will respectively absorb the two battery cells 2, and then be separated by the first pneumatic finger 1122; driven by the translation module 1121, the two battery cells 2 move to the loading transition belt line 113 and then are put down. At this time, the two battery cells 2 are respectively located on the two loading transition belt lines 113. The loading suction cup 1123 uses a Bernoulli suction cup to avoid lifting. In order to ensure the accuracy of each action, the first loading and correcting mechanism 1124a and the second loading and correcting mechanism 1124b are used to clamp the single battery cell 2 from both sides in turn, so as to ensure the correct posture and avoid the problem that the loading suction cup 1123 and the light-transmitting plate 1212 cannot absorb the battery cell 2.

[0050] like Figure 6As shown, the unloading conveying unit 13 includes a pair of unloading transition belt lines 131, a spacing adjustment mechanism 132, a suction rotation mechanism 133, and a pair of unloading belt lines 134. The unloading lifting conveyor device 124b, the unloading transition belt lines 131, and the unloading belt lines 134 are arranged in sequence along a first horizontal direction. The spacing adjustment mechanism 132 is located above the unloading transition belt lines 131. The spacing adjustment mechanism 132 includes a second pneumatic finger 1321 and two first unloading suction cups 1322 driven by the ends of the second pneumatic finger 1321 to move along the first horizontal direction. The suction rotation mechanism 133 is located above the unloading belt lines 134 and includes a rotation motor 12331 and two second unloading suction cups 1332 driven by the rotation motor 12331 to rotate 90 degrees about the vertical center axis. The spacing between the two unloading belt lines 134 is greater than the spacing between the two unloading transition belt lines 131.

[0051] The unloading and conveying unit 13 is used to remove two battery cells 2 from the unloading station 121d. The spacing adjustment mechanism 132 is used to adjust the spacing between the two battery cells 2 to the state when entering the inspection machine. That is, the two first unloading suction cups 1322 respectively suck air from the two battery cells 2, and then the second pneumatic finger 1321 moves the two first unloading suction cups 1322 away from each other. Because the turntable 1211 rotates 270° between the loading station 121a and the unloading station 121d (90° each time, for three rotations), the length and width of the battery cells 2 are interchanged. In order to ensure that the two battery cells 2 are still transported side by side, the suction rotation mechanism 133 is used to absorb the battery cell 2 and then rotate it 90° around the vertical axis. Specifically, the unloading transition belt line 131 first conveys two separated battery cells 2 to the unloading belt line 134, where each battery cell 2 now straddles two unloading belt lines 134. The two second unloading suction cups 1332, positioned in front and back of the unloading conveyor, then respectively absorb the two battery cells 2. The rotary motor 12331 then rotates the two battery cells 2 90° and places them back onto the two unloading belt lines 134. At this point, each battery cell 2 is located on a separate unloading belt line 134, and the two battery cells 2 are then conveyed out of the inspection machine. The use of Bernoulli suction cups for the first and second unloading suction cups 1322 and 1332 eliminates the need for lifting.

[0052] The working process of the double half-cell battery photoelectric conversion rate tester 1 is as follows:

[0053] S1. Spacing adjustment: Two battery cells 2 initially enter the loading belt line 111 at a wide distance. After being aligned by the first loading alignment mechanism 1124a, the spacing adjustment transfer mechanism 112 draws the two battery cells 2 from the loading belt line 111 closer together, and then places them on the loading transition belt line 113.

[0054] S2, alignment: After the second loading alignment mechanism 1124b further aligns the two battery cells 2, the loading transition belt line 113 will bring the two battery cells 2 to the loading lifting conveyor device 124a;

[0055] S3. Loading: The two battery cells 2 directly arrive under the loading station. The loading lifting and conveying device 124a lifts the two battery cells 2. At this time, the light-transmitting plate 1212 waiting at the loading station 121a absorbs the battery cells 2.

[0056] S4. Photo positioning: The turntable 1211 rotates 90°, allowing the cell 2 to reach the photo station 121b. A total of eight positioning cameras 1221 below the photo station 121b take photos of the four corners of the two cell 2 for positioning. The control system of the inspection machine obtains the photographed images and then calculates the probe adjustment amount information.

[0057] S5. Position adjustment: The turntable 1211 continues to rotate 90°, so that the battery cell 2 reaches the detection station 121c. During the movement of the battery cell 2, the two detection mechanisms will adjust the position of the probe 12331 respectively. When the battery cell 2 is in place, the probe 12331 will rise and connect to the conductive point.

[0058] S6, IV test: Under the premise of stable illumination provided by the light source above the inspection station 121c, light passes through the light-transmitting plate 1212 and irradiates the upper surface of the cell 2, thereby generating a voltage in the cell 2 and outputting a current from the probe 12331, thereby determining the photoelectric conversion efficiency of each cell 2;

[0059] S7, unloading: After the inspection is completed, the turntable 1211 rotates 90 degrees again, and the battery cell 2 reaches the unloading station 121d and falls onto the unloading lifting conveyor 124b. At this time, the two battery cells 2 are arranged side by side in the unloading conveying direction;

[0060] S8. Secondary spacing adjustment: The unloading lifting conveyor 124b transfers the two battery cells 2 to the unloading transition belt line 131. The spacing adjustment mechanism 132 uses two first unloading suction cups 1322 to respectively pick up the two battery cells 2. The second pneumatic finger 1321 then drives the two battery cells 2 to separate by a certain distance. The two battery cells 2 are then placed back on the unloading transition belt line 131.

[0061] S9. Discharging: The unloading transition belt line 131 transports the two battery cells 2 to the unloading belt line 134 and reaches the bottom of the adsorption rotary mechanism 133. The adsorption rotary mechanism 133 relies on the two second unloading suction cups 1332 to adsorb the two battery cells 2. Then the rotary motor 12331 rotates the two battery cells 2 90° around the vertical axis and then puts them back on the unloading belt line 134. Then the two unloading belt lines 134 each carry a battery cell 2 out of the inspection machine, and the rear equipment will separate the panels according to the photoelectric conversion rate test results.

[0062] The above process can quickly and accurately test the photovoltaic performance of the two solar cells 2 (referred to as IV testing).

[0063] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A device for detecting the photoelectric conversion rate of a double half-cell battery, characterized by: It includes a rotary adsorption unit, a loading lifting and conveying device located below and surrounding the rotary adsorption unit, a camera positioning unit, a probe detection unit, and a unloading lifting and conveying device; The rotary adsorption unit includes a turntable that performs step-rotating motion, and a plurality of light-transmitting plates are provided on the turntable. The lower surface of the light-transmitting plates has a plurality of adsorption holes. When the light-transmitting plates adsorb the battery cells, they are in close contact with the upper surface of the battery cells. The probe detection unit includes a lifting module, a correction mechanism driven by the lifting module to lift and lower, and a probe plate driven by the correction mechanism, and a light source is provided above the probe plate; The loading lifting and conveying device and the unloading lifting and conveying device both include a lifting mechanism and a conveying module driven to rise and fall by the lifting mechanism.

2. The device for detecting the photoelectric conversion rate of a double half-cell battery according to claim 1, characterized in that: Each light-transmitting plate is provided with two adsorption areas, and the probe detection units are two groups corresponding to the adsorption areas.

3. The device for detecting the photoelectric conversion efficiency of a double half-cell battery according to claim 2, characterized in that: The correction mechanism includes a horizontal adjustment module and an angle adjustment module. The angle adjustment module drives the probe plate to rotate around the vertical axis, the horizontal adjustment module drives the angle adjustment module to translate in the horizontal plane, and the lifting module drives the horizontal adjustment module to rise and fall.

4. The device for detecting the photoelectric conversion efficiency of a double half-cell battery according to claim 2, wherein: The camera positioning unit includes two groups of positioning cameras, each group of positioning cameras has four cameras and are distributed in a rectangular shape.

5. A double half-cell battery photoelectric conversion efficiency detection machine comprising the double half-cell battery photoelectric conversion efficiency detection device according to any one of claims 1 to 4, characterized in that: It also includes a loading conveying unit and a unloading conveying unit. The outlet of the loading conveying unit is connected to the loading lifting conveying device, and the inlet of the unloading conveying unit is connected to the unloading lifting conveying device.

6. The double half-cell battery photoelectric conversion efficiency tester according to claim 5, characterized in that: The loading and conveying unit includes a pair of loading belt lines, an interval adjustment transfer mechanism and several pairs of loading transition belt lines. The loading belt lines, the loading transition belt lines and the loading lifting and conveying device are arranged in sequence along the first horizontal direction. The interval adjustment transfer mechanism includes a translation module, a first pneumatic finger driven by the translation module to move along the first horizontal direction, and two loading suction cups driven by the two ends of the first pneumatic finger to move along the second horizontal direction. The first horizontal direction is the loading and conveying direction. The first horizontal direction is perpendicular to the second horizontal direction. The spacing between the two loading belt lines is greater than the spacing between the two loading transition belt lines.

7. The double half-cell battery photoelectric conversion efficiency tester according to claim 6, characterized in that: The loading suction cup is provided with a loading sensor for sensing the position of the half-cell battery.

8. The double half-cell battery photoelectric conversion efficiency tester according to claim 6, characterized in that: A set of first feeding and correcting mechanisms are provided on both sides of the conveying direction of each feeding belt line, and a set of second feeding and correcting mechanisms are provided on both sides of the feeding and conveying direction of the feeding transition belt line.

9. The double half-cell battery photoelectric conversion efficiency tester according to claim 5, characterized in that: The unloading conveying unit includes a pair of unloading transition belt lines, an interval adjustment mechanism, an adsorption rotation mechanism and a pair of unloading belt lines. The unloading lifting and conveying device, the unloading transition belt line and the unloading belt line are arranged in sequence along the first horizontal direction. The interval adjustment mechanism is located above the unloading transition belt line. The interval adjustment mechanism includes a second pneumatic finger and two first unloading suction cups driven by the two ends of the second pneumatic finger to move along the first horizontal direction. The adsorption rotation mechanism is located above the unloading belt line. The adsorption rotation mechanism includes a rotary motor and two second unloading suction cups driven by the rotary motor to rotate 90° around the vertical center axis. The spacing between the two unloading belt lines is greater than the spacing between the two unloading transition belt lines.

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