Clamp applied to battery detection

Abstract

A frame is installed on the periphery of a light-transmitting plate, a group of opposite side edges of the frame are provided with two groups of translation grooves with corresponding heights, the two groups of translation grooves are arranged above the light-transmitting plate and are arranged up and down, and two ends of two clamping rods are respectively connected in the group of translation grooves at the lower side. The probe plate is connected in one group of translation grooves on the upper side, an ampere meter terminal and a voltmeter terminal are led out from the probe plate, the other group of opposite side edges of the frame are respectively connected with a support column on the base through a shaft, and a handle is arranged at the outer end of the shaft. When the positive electrode and the negative electrode are both designed on the same face of the battery and on the two faces of the battery respectively, compatible fixation is conducted on the solar battery during IV testing, the battery is fixed through the movable clamping rod, the probe plate is installed on the movable moving rod, flexible adjustment can be achieved, the solar battery fixing device is particularly suitable for fixing small-size batteries, the batteries are firmly fixed, and the working efficiency is improved. And the overturning of the test bench does not affect the clamping and fixing of the battery.

Description

Technical Field

[0001] This application relates to a testing fixture for solar cells. Background Technology

[0002] Photovoltaic conversion efficiency is the most direct test method for evaluating the performance of solar cells. Currently, IV test fixtures mainly consist of a simulated solar light source, a test source meter, a computer with analysis software, and a battery fixing device.

[0003] Due to differences in battery structure and testing conditions, IV testing cannot use the same battery mounting device to test different types of solar cells. Instead, the battery mounting device needs to be changed to accommodate batteries with different structures and sizes. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a clamp for battery testing, which is suitable for the compatible fixation of solar cells when the positive and negative electrodes are designed on the same side of the battery or on both sides of the battery, and is especially suitable for small-sized batteries.

[0005] Technical solution: A fixture for battery testing includes a test platform, a base, and a conductive plate. The test platform includes a light-transmitting plate, a frame, clamping rods, and a probe plate. The frame is installed around the light-transmitting plate. Two sets of translation slots with corresponding heights are formed on a set of opposite sides of the frame. Both sets of translation slots are located above the light-transmitting plate and are arranged vertically. The two clamping rods are connected at both ends to the lower set of translation slots. The probe plate is connected to the upper set of translation slots. An ammeter terminal and a voltmeter terminal are led out from the probe plate. The other set of opposite sides of the frame are connected to a support column on the base via a shaft. A handle is installed at the outer end of the shaft.

[0006] The battery is placed with the light-receiving side facing down on the light-transmitting plate. The two clamping rods are moved to clamp and fix a set of opposite sides of the battery. The probe plate is moved to contact and conduct with the positive and negative grid lines on the back of the battery. The test stage is rotated so that the light-receiving side of the battery faces up, and IV test is performed.

[0007] The conductive plate is placed on the light-transmitting plate, and the battery is placed on the conductive plate with the light-receiving side facing up. All the grid lines on the back of the battery are in contact with the conductive plate and conduct electricity. The two clamping rods are moved to clamp and fix a set of opposite sides of the battery. The probe plate is moved to contact and conduct electricity with the grid lines on the light-receiving surface of the battery to perform IV testing.

[0008] Furthermore, the conductive plate is made of pure gold or gold-plated copper, and the light-transmitting plate is made of quartz, which has high light transmittance, ensuring that the light-receiving surface of the battery is irradiated by a simulated sunlight source.

[0009] Furthermore, fastening nuts are provided at both ends of the clamping rod, and the fastening nuts abut against and fasten to the outer side of the side of the frame.

[0010] Furthermore, the clamping surface of the clamping rod is a vertical plane. The battery located between the two clamping rods directly contacts the side of the battery through the clamping surface, and the vertical plane can effectively contact the side of the battery in a planar manner, thus reliably clamping and fixing the battery.

[0011] Furthermore, the probe plate is mounted on a movable rod, the two ends of which are connected to a set of translation slots on the upper side. The probe plate and the movable rod are slidably connected along their length. Fastening nuts are provided at both ends of the movable rod, and these nuts abut and fasten against the outer side of the side of the frame. The probe plate can be adjusted in multiple directions.

[0012] Beneficial effects: The clamp of this utility model for battery testing is suitable for both positive and negative electrodes designed on the same side of the battery and on two different sides of the battery, so as to fix the solar cell in a compatible manner during IV testing; the movable clamping rod fixes the battery and the movable moving rod installs the probe plate, which can be flexibly adjusted, especially suitable for fixing small-sized batteries, and the battery is firmly fixed. The test stage can be flipped without affecting the clamping and fixing of the battery. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0015] A fixture for battery testing, as shown in the attached image. Figure 1 As shown, it includes a test platform 1, a base 2, and a conductive plate 3.

[0016] The test stage 1 includes a light-transmitting plate 11, a frame 12, a clamping rod 13, and a probe plate 14. The light-transmitting plate 11 needs to have high light transmittance, for example, it is made of quartz material. The frame 12 is installed around the light-transmitting plate 11.

[0017] Two sets of translation slots 15 with corresponding heights are provided on a set of opposite sides 121 and 122 of the frame 12. Both sets of translation slots are located above the light-transmitting plate and are arranged vertically. Two clamping rods 13 are placed in the lower set of translation slots 151. The two ends of the clamping rods 13 are located in the two translation slots 151. The two clamping rods can move parallel to the light-transmitting plate along the translation slots. The clamping rods 13 are provided with fastening nuts at both ends. When the fastening nuts are tightened, they abut against the outer surfaces of the sides 121 and 122 and fix the clamping rods 13 in position within the translation slots 15. The opposing surfaces of the two clamping rods 13 are the clamping surfaces 131. The battery is located between the two clamping rods, and the clamping surfaces directly contact the side of the battery to clamp and fix the battery. For this purpose, the clamping surfaces 131 are designed as vertical planes so that they can effectively contact the side of the battery in a planar manner. A movable rod 141 is placed in a set of translation slots 152 on the upper side. The two ends of the movable rod 141 are located in the two translation slots 152. The movable rod can move parallel to the light-transmitting plate along the translation slots. Fastening nuts are provided at both ends of the movable rod 141. When the fastening nuts are tightened, they abut against the outer surfaces of the sides 121 and 122 and fix the movable rod 141 in the position within the translation slots 152. A probe plate 14 is installed on the movable rod 141. The probes 142 on the probe plate 14 face the light-transmitting plate. The probe plate 14 and the movable rod 141 are connected by a sliding rail in the length direction, forming a sliding connection.

[0018] The probe plate 14 has at least two probes 142. From all the probes 142, the ammeter terminals and voltmeter terminals are led out. The two ammeter terminals are used to connect to the source meter to test the current, and the two voltmeter terminals are used to connect to the source meter to test the voltage.

[0019] The test platform 1 is located above the base 2. The other set of opposite sides 123 and 124 of the frame 12 are connected to the support column 21 on the base 2 through the shaft 16. The test platform 1 can be rotated as a whole through the shaft 16 at both ends. The handle 17 installed on the outer end of the shaft 16 can facilitate the rotation of the test platform 1. The handle 17 has a locking structure, which can be locked after rotation to keep the position of the test platform fixed.

[0020] This utility model relates to a fixture for battery testing, suitable for securing solar cells during IV testing when both positive and negative electrodes are designed on the same side of the battery. The battery should be placed on a transparent plate with its back side facing upwards and its light-receiving side facing downwards. Two clamping rods are moved to clamp and fix a set of opposite sides of the battery. Then, a moving rod is moved to make the probes on the probe plate make contact with the positive and negative grid lines on the back of the battery, ensuring proper contact. After fixing the clamping and moving rods, the handle is rotated to flip the test platform so that the transparent plate faces upwards, simulating sunlight shining down onto the transparent plate. The positive grid line on the back of the battery effectively makes contact with at least one probe, and the negative grid line on the back of the battery effectively makes contact with at least one probe. The probes are then led out through the ammeter and voltmeter terminals and connected to the source meters to form a circuit for IV testing.

[0021] Solar cells with both positive and negative electrodes designed on the same side, such as perovskite tandem (BC) silicon cells, perovskite single-junction cells, and perovskite tandem perovskite cells. When mounting such cells on the fixture for cell testing according to this invention, the grid electrodes can be held in an upward position for probe alignment, avoiding the disadvantage of having the grid electrodes in a downward position, which would hinder probe alignment.

[0022] This utility model's fixture for battery testing is also applicable to the compatible fixation of solar cells during IV testing when the positive and negative electrodes are designed on opposite sides of the battery. The conductive plate 3, made of pure gold or gold-plated copper, should be placed on the light-transmitting plate 11. The battery should be placed with its back side facing down and its light-receiving side facing up on the conductive plate. The conductive plate should be no smaller than the battery's maximum design size. When the battery is placed on the conductive plate, all the grid lines on the back of the battery are in contact with the conductive plate and conduct electricity. Two clamping rods are moved to clamp and fix a set of opposite sides of the battery. Then, the moving rod is moved so that the probes on the probe plate are in contact with the grid lines on the light-receiving surface of the battery. The grid lines and probes only need to be able to make contact and conduct electricity. Simulating sunlight shining from above onto the light-receiving surface of the battery, the positive grid line electrode on the back of the battery effectively contacts and conducts electricity with the conductive plate, and the negative grid line electrode on the light-receiving surface of the battery effectively contacts and conducts electricity with at least one probe. The probes are then led out through the ammeter and voltmeter terminals and connected to the source meter to form a circuit for IV testing.

[0023] Solar cells with positive and negative electrodes designed on two separate sides, such as TOPCon, HJT, and PERC crystalline silicon cells, and perovskite stacked (TOPCon, HJT, PERC) crystalline silicon cells.

[0024] This utility model relates to a battery testing fixture that uses a movable clamping rod to secure the battery and a movable probe plate to mount it. It is flexibly adjustable and compatible with different sizes, making it particularly suitable for securing small batteries. The battery is firmly secured, and the battery is held in place even when the test stage is rotated. The probes ensure effective contact and conductivity with the subgrid lines, making it suitable for batteries without a main grid.

Claims

1. A fixture for battery testing, characterized in that: The utility model provides a test platform, including test platform (1), base (2), conductive plate (3), the test platform (1) includes light transmission plate (11), frame (12), clamping rod (13), probe plate (14), the frame (12) is installed in the light transmission plate (11) four around, the frame (12) on a group of opposite sides is equipped with two groups of height corresponding translation slot (15), two groups the translation slot (15) are above the light transmission plate (11) and are arranged in upper and lower, two clamping rod (13) two ends are connected in the translation slot (15) of downside group respectively, the probe plate (14) is connected in the translation slot (15) of upside group, the ammeter connection terminal and the voltmeter connection terminal are led out from the probe plate (14), the frame (12) another group of opposite sides are connected through the axle (16) with the support (21) on the base (2), the axle (16) is installed handle (17) in outer end, Battery is placed on the light transmission plate (11) with light receiving surface downward, two clamping rod (13) are moved to the clamping fixation of a group of opposite sides of battery, the probe plate (14) is moved to the contact conduction of positive grid line, negative grid line on the back of battery respectively, rotate the test platform (1) and make battery light receiving surface upward, carry out IV test, The conductive plate (3) is placed on the light transmission plate (11), and the battery is placed on the conductive plate (3) with the light receiving surface upward. All the grid lines on the back of the battery are in contact with the conductive plate (3) and are in conduction. Two clamping rods (13) are moved to clamp and fix a group of opposite sides of the battery. The probe plate (14) is moved to contact and conduct the grid lines on the light receiving surface of the battery. IV test is performed.

2. The clamp for battery detection according to claim 1, wherein: The material of the conductive plate (3) is pure gold or copper gold plating, and the material of the light transmission plate (11) is quartz.

3. The clamp for battery detection according to claim 1, wherein: The clamping rod (13) is provided with a fastening nut at both ends, and the fastening nut is tightly fastened with the outer side surface of the side of the frame (12).

4. The clamp for battery detection of claim 1, wherein: The clamping surface (131) of the clamping rod (13) is a vertical plane.

5. The clamp for battery detection of claim 1, wherein: The probe plate (14) is installed on a moving rod (141), the moving rod (141) is connected at both ends in the translation slot (15) of the upper side group, the probe plate (14) and the moving rod (141) are formed in sliding connection in the length direction, the moving rod (141) is provided with a fastening nut at both ends, and the fastening nut is tightly fastened with the outer side surface of the side of the frame (12).

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