Platform for testing electrical performance of battery piece by wire drawing method

Abstract

The utility model provides a battery piece electrical performance wire drawing method test platform, and relates to the technical field of battery pieces. The battery piece electrical performance wire drawing method test platform comprises a machine body, a moving frame is arranged above the machine body, guide rods are fixedly connected to the four corners of the upper portion of the machine body, guide holes in sliding connection with the guide rods are formed in the positions, corresponding to the guide rods, of the moving frame, springs are arranged on the outer sides of the guide rods in a sliding and sleeving mode, and the springs are connected with the guide rods in a sliding and sleeving mode. The spring is located between the machine body and the moving frame. According to the battery piece electrical performance wire drawing method test platform, the guide rods are arranged so that the movable frame can ascend and descend, meanwhile, the four pull ropes are arranged and are stored through the storage rods at the same time, so that the hand pulling pressure at the four corners of the movable frame is the same, the movable frame can ascend and descend stably, the inclination phenomenon is avoided, and the service life of the battery piece electrical performance test platform is prolonged. Therefore, the use stability of the battery piece electrical performance wire drawing method test platform can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a test platform for testing the electrical performance of solar cells by the wire-pulling method, specifically a test platform for testing the electrical performance of solar cells by the wire-pulling method, belonging to the technical field of solar cells. Background Technique

[0002] Solar cells are generally divided into monocrystalline silicon, polycrystalline silicon and amorphous silicon. Monocrystalline silicon solar cells are the fastest-developed solar cells at present. Their structures and production processes have been finalized, and the products have been widely used in space and on the ground. Such solar cells are made of high-purity monocrystalline silicon rods. In order to reduce production costs, solar cells for ground applications, etc., use solar-grade monocrystalline silicon rods, and the material performance indicators are relaxed. Some can also use the head and tail materials and waste and defective monocrystalline silicon materials processed by semiconductor devices, and are made into monocrystalline silicon rods dedicated to solar cells through secondary drawing;

[0003] After a large number of searches, it is found that: in the Chinese utility model patent column: application number 202023115078.8, a test platform for testing the electrical performance of solar cells by the wire-pulling method, including a test bench, a moving frame and a test circuit. The test bench is provided with a probe row for abutting against one side of the solar cell to be tested; the moving frame is movably connected to the test bench, and the moving frame includes a frame and multiple metal wires; both ends of the metal wires are connected to the frame, the multiple metal wires are parallel and evenly spaced, and the distance between the middle of the metal wires and the test bench is less than the distance between the two ends of the metal wires and the test bench; the test circuit, the probe row and the metal wires are electrically connected to the test circuit;

[0004] This device uses the method of pressing down the moving frame to make the metal wires contact one side of the solar cell to be tested, so as to facilitate the electrical performance detection of the solar cell to be tested. This device is provided with multiple sliding columns to limit the lifting of the moving frame, and each sliding column corresponds to a motor or a cylinder, which will increase the production and maintenance costs of this device. Among them, if there is only one motor or cylinder, it will cause uneven stress on the other sliding columns without motors or cylinders, so it will reduce the stability of the moving frame, resulting in the tilting of the moving frame. Therefore, it will affect the contact surface between each metal wire and the surface of the solar cell, and cause poor contact of some metal wires, and problems such as reduced contact area with the solar cell to be tested, thus affecting the detection accuracy. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the present utility model is to provide a test platform for testing the electrical performance of solar cells by the wire-pulling method to solve the problem of unstable use of the existing test device for testing the electrical performance of solar cells by the wire-pulling method.

[0007] (2) Technical Solutions

[0008] The present utility model is realized through the following technical solutions: A test platform for testing the electrical performance of battery cells by the wire-pulling method, including a machine body. A moving frame is arranged above the machine body. Guide rods are fixedly connected to the four corners of the upper part of the machine body. Guide holes are respectively opened at the four corners of the moving frame. A plurality of the guide rods are respectively arranged inside the plurality of guide holes and are in sliding contact with the moving frame. Springs are slidably sleeved on the outer sides of the guide rods, and the springs are located between the machine body and the moving frame. A receiving rod is rotatably connected inside the machine body, and a limiting component for limiting the rotation of the receiving rod is arranged on the machine body. Pulling ropes are fixedly wound on both sides of the receiving rod, and the movable ends of the four pulling ropes are respectively arranged on both sides of the moving frame.

[0009] Preferably, a workbench is installed at the center of the upper part of the machine body, a probe row is installed on the upper part of the workbench, and metal wires are arranged on the inner wall of the moving frame at equal distances.

[0010] Preferably, the limiting component includes a worm gear and a worm that are meshed and connected to each other. The worm gear and the worm are both rotatably connected to one side of the machine body, and the center of one side of the worm gear is fixedly connected to the end of the receiving rod.

[0011] Preferably, two hanging rods are fixedly connected to both sides of the moving frame. Hanging grooves are opened at the upper parts of the hanging rods, and connecting rods are inserted into the hanging grooves. The two connecting rods are respectively fixedly connected to the movable ends of the four pulling ropes.

[0012] Preferably, the pulling ropes on both sides of the moving frame are arranged in a staggered manner.

[0013] Preferably, first clamping plates are fixedly connected to the inner walls on both sides of the moving frame, and rotating rods are rotatably connected to the inner walls on both sides of the moving frame. Slide rods are slidably sleeved on the outer sides of the rotating rods. Second clamping plates distributed in a linear array are fixedly connected to the upper parts of the slide rods. Each of the second clamping plates is respectively located on one side of each of the first clamping plates. The second clamping plates and the first clamping plates cooperate to clamp the ends of the metal wires. Internal threads threadedly connected to external threads are arranged on the inner wall of one end of the slide rod.

[0014] Preferably, conductive sheets with conductivity are installed on one side of the second clamping plates located on one side of the first clamping plates.

[0015] The present utility model provides a test platform for testing the electrical performance of battery cells by the wire-pulling method, and the beneficial effects thereof are as follows:

[0016] 1. For this test platform for testing the electrical performance of battery cells by the wire-pulling method, by arranging the guide rods, the moving frame can be lifted and lowered. At the same time, four pulling ropes are also arranged, and the four pulling ropes are simultaneously received by the receiving rod. In this way, the hand-pulling pressures at the four corners of the moving frame are the same, and thus the moving frame can be stably lifted and lowered, avoiding the phenomenon of tilting. In this way, the stability of the test platform for testing the electrical performance of battery cells by the wire-pulling method can be effectively improved.

[0017] 2. The test platform for the electrical performance of the battery cell by the wire-pulling method. By setting the pulling rope and the storage rod, the relevant mechanism for driving the movable frame to lift is convenient to use and simple to operate. Thereby, the number of driving devices can be reduced, and thus the convenience of using the test platform for the electrical performance of the battery cell by the wire-pulling method can be effectively improved, and the production and use costs of the device can be reduced.

[0018] 3. The test platform for the electrical performance of the battery cell by the wire-pulling method. Through the first clamping plate and the second clamping plate, and using the sliding rod to fix each second clamping plate, it is convenient to disassemble and assemble each metal wire simultaneously, thereby improving the convenience of replacing, repairing, and adjusting the metal wire.

[0019] 4. The test platform for the electrical performance of the battery cell by the wire-pulling method. By setting the connecting rod and the hanging rod, it is convenient to disassemble and assemble the movable plate, so as to improve the convenience of repairing and replacing the structure of the test platform for the electrical performance of the battery cell by the wire-pulling method. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the whole of the present utility model;

[0021] Figure 2 is a three-dimensional schematic diagram of the body of the present utility model;

[0022] Figure 3 is a three-dimensional schematic diagram of the cooperation between the movable frame and the metal wire of the present utility model;

[0023] Figure 4 is a three-dimensional schematic diagram of the movable frame of the present utility model;

[0024] Figure 5 is a three-dimensional schematic diagram of the cooperation between the pulling rope and the storage rod of the present utility model

[0025] Figure 6 is a three-dimensional schematic diagram of the sliding rod of the present utility model.

[0026]

SYMBOLS OF MAIN COMPONENTS

[0027] 1. Body; 2. Movable frame; 3. Sliding rod; 4. Guide rod; 5. Guide hole; 6. Storage rod; 7. Pulling rope; 8. Workbench; 9. Metal wire; 10. Worm gear; 11. Worm; 12. Hanging rod; 13. Connecting rod; 14. First clamping plate; 15. Second clamping plate; 16. Rotating rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] An embodiment of the present utility model provides a test platform for the electrical performance of a battery cell by the wire-pulling method.

[0029] Please refer to Figures 1 to 6, including a body 1, a moving frame 2 is arranged above the body 1, guide rods 4 are fixedly connected to the four corners of the upper part of the body 1, guide holes 5 are formed at the four corners of the moving frame 2, and the plurality of guide rods 4 are respectively arranged inside the plurality of guide holes 5 and are in sliding contact with the moving frame 2. A spring is slidably sleeved on the outer side of the guide rod 4, and the spring is located between the body 1 and the moving frame 2. A receiving rod 6 is rotatably connected inside the body 1, and a limiting component for limiting the rotation of the receiving rod 6 is arranged on the body 1. Pulling ropes 7 are fixedly wound on both sides of the receiving rod 6, and the movable ends of the four pulling ropes 7 are respectively arranged on both sides of the moving frame 2;

[0030] Place the battery cell to be measured on the workbench 8, and then rotate the receiving rod 6 to simultaneously receive each pulling rope 7 by using the receiving rod 6. The pulling ropes 7 will then pull the moving frame 2 to descend. During the descent of the moving frame 2, each spring will be compressed. At this time, the probe row contacts one side of the battery cell to be measured, while the metal wire 9 on the moving frame 2 contacts the other side of the battery cell to be measured. The probe row and the metal wire 9 are respectively connected to the positive and negative electrodes of the battery cell to be measured; during the test, the metal wire 9 abuts against the sub-grid on one side of the battery cell to be measured, and a test circuit is formed among the probe row, the metal wire 9, and the battery cell to be measured, completing the measurement of the voltage and current of the battery cell to be measured.

[0031] Please refer to Figure 2 , a workbench 8 is installed at the center of the upper part of the body 1, a probe row is installed on the upper part of the workbench 8, and metal wires 9 are arranged on the inner wall of the moving frame 2 at equal intervals.

[0032] Please refer to Figure 1 and Figure 5 , the limiting component includes a worm gear 10 and a worm 11 that are meshed and connected to each other. The worm gear 10 and the worm 11 are both rotatably connected to one side of the body 1, and the center of one side of the worm gear 10 is fixedly connected to the end of the receiving rod 6;

[0033] Drive the worm 11 to rotate manually or by a motor, and the worm 11 will drive the receiving rod 6 to rotate by using the worm gear 10.

[0034] Please refer to Figure 5 , two hanging rods 12 are fixedly connected to both sides of the moving frame 2. Hanging grooves are formed in the upper parts of the hanging rods 12, and connecting rods 13 are inserted into the hanging grooves. The two connecting rods 13 are respectively fixedly connected to the movable ends of the four pulling ropes 7;

[0035] Hang the connecting rod 13 on the hanging rod 12, so that the pulling rope 7 can be fixed on the moving frame 2, facilitating the pulling rope 7 to pull the moving frame 2 to descend, and the separable manner of the connecting rod 13 and the hanging rod 12 makes the moving frame 2 easy to disassemble and assemble.

[0036] Please refer to Figure 5 , the pulling ropes 7 on both sides of the moving frame 2 are arranged in a staggered manner.

[0037] Please refer to Figure 3 、 Figure 4 and Figure 6 On both inner walls of the two sides of the moving frame 2, a first clamping plate 14 is fixedly connected, and on both inner walls of the two sides of the moving frame 2, a rotating rod 16 is rotatably connected. A sliding rod 3 is slidably sleeved on the outer side of the rotating rod 16. A second clamping plate 15 distributed in a linear array is fixedly connected to the upper part of the sliding rod 3. Each second clamping plate 15 is respectively located on one side of each first clamping plate 14. The second clamping plate 15 and the first clamping plate 14 cooperate to clamp the end of the metal wire 9. An internal thread threadedly connected to the external thread is arranged on the inner wall of one end of the sliding rod 3;

[0038] Place the end of the metal wire 9 between the adjacent second clamping plate 15 and the first clamping plate 14, and then rotate the rotating rod 16. The rotating rod 16 utilizes the external thread to cooperate with the internal thread at the end of the sliding rod 3. In this way, the sliding rod 3 slides on the rotating rod 16, and thus drives each second clamping plate 15 to approach the corresponding first clamping plate 14 simultaneously by means of the sliding rod 3. At this time, the second clamping plate 15 and the first clamping plate 14 can cooperate to clamp the metal wire 9.

[0039] Please refer to Figure 4 , and a conductive sheet with conductivity is installed on one side of the first clamping plate 14 where the second clamping plate 15 is located;

[0040] The metal wire 9 is electrically connected to the conductive sheet, and the conductive sheet and the probe row are both electrically connected to the test circuit.

[0041] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery cell electrical performance wire drawing method test platform, comprising a body (1), a movable frame (2) is arranged above the body (1), and is characterized in that: Guide rods (4) are fixedly connected at the four corners of the upper part of the body (1), and guide holes (5) are opened at the four corners of the movable frame (2). A plurality of guide rods (4) are respectively arranged inside the plurality of guide holes (5) and are in sliding contact with the movable frame (2). A spring is provided on the outer sliding sleeve of the guide rod (4), and the spring is located between the body (1) and the movable frame (2). A storage rod (6) is rotatably connected inside the body (1), and a limiting component for limiting the rotation of the storage rod (6) is provided on the body (1). Draw ropes (7) are fixedly wound around both sides of the storage rod (6), and the movable ends of the four draw ropes (7) are respectively arranged on both sides of the movable frame (2).

2. A battery cell electrical performance wire drawing method test platform according to claim 1, characterized in that: A workbench (8) is installed at the center of the upper part of the machine body (1), a probe row is installed on the upper part of the workbench (8), and metal wires (9) distributed at equal distances are arranged on the inner wall of the movable frame (2).

3. A battery cell electrical performance wire drawing method test platform according to claim 1, characterized in that: The limiting component comprises a worm wheel (10) and a worm (11) meshingly connected to each other, wherein the worm wheel (10) and the worm (11) are both rotatably connected to one side of the machine body (1), and the axis center of one side of the worm wheel (10) is fixedly connected to the end of the storage rod (6).

4. A battery cell electrical performance wire drawing method test platform according to claim 1, characterized in that: Two hanging rods (12) are fixedly connected to both sides of the mobile frame (2), and a hanging groove is provided on the upper part of the hanging rod (12), and a connecting rod (13) is plugged into the hanging groove. The two connecting rods (13) are fixedly connected to the movable ends of the four pull ropes (7) respectively.

5. The battery cell electrical performance wire drawing method test platform according to claim 1, characterized in that: The pull ropes (7) on both sides of the movable frame (2) are arranged in a staggered manner.

6. A battery cell electrical performance wire drawing method test platform according to claim 2, characterized in that: The first clamping plates (14) are fixedly connected to the inner walls on both sides of the movable frame (2), and the inner walls on both sides of the movable frame (2) are rotatably connected to the rotating rods (16), the outer side of the rotating rod (16) is slidably sleeved with a sliding rod (3), and the upper part of the sliding rod (3) is fixedly connected to the second clamping plates (15) distributed in a linear array, each of the second clamping plates (15) is respectively located on one side of each first clamping plate (14), the second clamping plates (15) and the first clamping plates (14) cooperate to clamp the end of the metal wire (9), and the inner wall of one end of the sliding rod (3) is provided with an internal thread connected to the external thread.

7. A battery cell electrical performance wire drawing method test platform according to claim 6, characterized in that: The second clamping plate (15) is located on one side of the first clamping plate (14) and is provided with a conductive sheet.

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