CN210166447U

CN210166447U - Voltage measuring device of solar cell

Info

Publication number: CN210166447U
Application number: CN201920338636.5U
Authority: CN
Inventors: 苏领; 杨海山
Original assignee: Beijing Apollo Ding Rong Solar Technology Co Ltd
Current assignee: Hongyi Technology Co.,Ltd.
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2020-03-20
Anticipated expiration: 2029-03-15

Abstract

The embodiment of the present application relates to a voltage measurement device of a solar cell, including: the device comprises a bracket, a driving mechanism, an analog light source, a probe and a bottom plate; the simulation light source is connected to the lower part of the bracket through the driving mechanism; the probe is positioned below the simulation light source; the bottom plate is positioned below the probe and used for placing the solar cell; the probe comprises an elastic piece and a ball positioned below the elastic piece. The design mode of the probe can ensure that all the probes can be in contact with the solar cell or the bottom plate in the whole process of pressing down the probe, and the contact force between the probe and the solar cell can be ensured not to be too large by adjusting the elastic coefficient of the elastic piece, so that the coating of the solar cell is prevented from being scratched.

Description

Voltage measuring device of solar cell

Technical Field

The application relates to the field of solar cell testing, in particular to a voltage measuring device of a solar cell.

Background

The electrical property of the solar cell piece needs to be detected after the solar cell piece is produced, and whether the solar cell piece is qualified or not is judged. At present, a plurality of manufacturers detect the solar cells by adopting simple voltage detection tools, generally adopt voltage measurement instruments, connect the positive and negative electrodes of the solar cells by connecting pins, and detect under simulated illumination.

Based on this, it is highly desirable to provide a voltage measuring apparatus of a solar cell.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a voltage measuring device of a solar cell, which aims to solve the problems that the operation of the existing voltage detection of the solar cell is inconvenient, the labor intensity is high and the working efficiency is low.

The embodiment of the application provides the following specific technical scheme:

in a first aspect, an embodiment of the present application provides a voltage measurement device for a solar cell, including: the device comprises a bracket, a driving mechanism, an analog light source, a probe and a bottom plate;

the simulation light source is connected to the lower part of the bracket through the driving mechanism;

the probe is positioned below the simulation light source;

the bottom plate is positioned below the probe and used for placing the solar cell;

the probe comprises an elastic piece and a ball positioned below the elastic piece.

Thus, when the probe is pressed down during voltage measurement of the solar cell, the ball contacts the solar cell or the substrate to be tested. The design mode of the probes can ensure that all the probes can be in contact with the solar cell or the bottom plate in the whole process of pressing down the probes, the contact force between the probes and the solar cell can be ensured not to be too large by adjusting the elastic coefficient of the elastic piece, the coating of the solar cell is prevented from being scratched, and the electrical parameters of the solar cell can be ensured to meet the standard requirements; furthermore, the device has the advantages of simple structural design, convenient and simple operation, low labor intensity and high working efficiency.

Optionally, the bracket is connected to the longitudinal guide rail, and the motor is mounted on the longitudinal guide rail.

Optionally, the device further comprises a driving mechanism, wherein the driving mechanism comprises an air cylinder or a lead screw.

Optionally, the resilient member comprises a spring or bristles made of flexible conductive fibers.

Optionally, the bottom plate is a metal bottom plate, a hole is formed in the bottom plate, and the bottom plate can adsorb the solar cell through the hole and the vacuum device.

Optionally, the bottom plate is an electromagnetic chuck, and the solar cell can be adsorbed by the electrification state of the bottom plate.

Optionally, the probe comprises a positive electrode probe and a negative electrode probe, and the negative electrode probe is in contact with the coating surface of the solar cell; the positive electrode probe is in contact with the bottom plate.

Optionally, the number of the solar cells is 1 or more.

Optionally, the setting interval of the negative electrode probe is 0-10 mm.

Drawings

Fig. 1 and 2 are schematic structural diagrams of a voltage measuring device of a solar cell in an embodiment of the present application;

FIG. 3 is a schematic diagram of a probe according to an embodiment of the present application.

1-a scaffold; 2-a drive mechanism; 3-simulating a light source; 4, a probe; 5-bottom plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

For a flexible thin film solar cell, in the process of interconnecting a cell integrated chip, a cell roll with a certain width needs to be cut into cell pieces with fixed lengths. To determine the performance of each solar cell, an open circuit Voltage (VOC) measurement needs to be taken of each solar cell. During measurement, simulated sunlight is emitted by the LED simulated light source to irradiate the solar cell, the solar cell generates voltage, and voltage data of the solar cell is obtained by measuring the potential difference between the anode (generally a stainless steel surface) and the cathode (generally a CIGS coating surface) of the solar cell.

An embodiment of the present application provides a voltage measurement device for a solar cell, where fig. 1 is a front view of the measurement device, and fig. 2 is an overall structural diagram of the measurement device, the measurement device includes: the device comprises a support 1, a driving mechanism 2, an analog light source 3, a probe 4 and a bottom plate 5; wherein, the analog light source 1 is connected to the lower part of the bracket 1 through the driving mechanism 2; the probe 3 is positioned below the analog light source 2; the bottom plate 4 is located below the probe 3 and used for placing the solar cell.

It is worth mentioning that the probe 4 in the embodiment of the present application includes a housing, an elastic member and a ball under the elastic member, and optionally, the elastic member may be a spring, as shown in fig. 3, or other elastically stretchable and conductive member, such as a bristle made of flexible conductive fiber. When the probe is pressed down, the ball contacts the solar cell or the bottom plate. The design mode of the probe 4 can ensure that all probes can be in contact with the solar cell or the bottom plate in the process of pressing down the whole probe, and the elastic coefficient of the elastic piece is adjusted to ensure that the contact force between the probe 4 and the solar cell is not too large, so that the coating of the solar cell is prevented from being scratched, and the electrical parameter of the solar cell is ensured to meet the standard requirement.

It should be noted that the driving mechanism 2 can drive the analog light source 2 and the probe 4 to move up and down, and the driving mechanism 2 may adopt an air cylinder, and may also adopt other modes, such as a screw:

further, support 1 in this application embodiment connects on the longitudinal rail, install the motor on the longitudinal rail to when the motor starts, support 1 moves along the longitudinal rail, thereby drives probe 4 and carries out longitudinal movement.

Specifically, the bottom plate in the embodiment of the present application may adopt 2 design manners, in the first design manner, the bottom plate 5 is designed as a metal bottom plate, and a hole is provided on the bottom plate 5, and a vacuum device can vacuum-adsorb the solar cell to the bottom plate 5 by using the hole on the bottom plate 5; in the second design mode, the bottom plate 5 is designed to be an electromagnetic chuck, and when solar cells are placed on the bottom plate 5, the solar cells are adsorbed by the control bottom plate in a nonmagnetic manner through electrifying or powering off the bottom plate 5.

It should be noted that the probe 4 includes a positive electrode probe and a negative electrode probe, and the negative electrode probe is in contact with the coating surface of the solar cell; the positive electrode probe is in contact with the bottom plate.

Optionally, the number of the solar cells is 1 or more. When the measuring equipment shown in fig. 1 or fig. 2 measures the voltage of the solar cell, the voltage measurement may be performed on only 1 solar cell, or may be performed on a plurality of solar cells simultaneously, and in the embodiments of the present application, 2 solar cells are taken as an example for description. As shown in fig. 1 or fig. 2, 12 negative probes are arranged on each solar cell and are in contact with the coating surface of the solar cell, 2 positive probes are arranged on each solar cell and are in contact with the bottom plate, the arrangement interval of the negative probes is 0-10 mm, for example, the negative probes can be arranged in sequence at intervals of 5mm, the interval distance of the probes can be arbitrarily set according to the process requirements, and no specific limitation is made here.

The simulation light source in the embodiment of the application can adopt an LED light source, and also can adopt other illumination light sources.

Further, the driving mechanism of the measuring device adopts a cylinder as an example, and the actual operation process of measuring the voltage of 2 solar cells by using the measuring device is specifically as follows:

1. the manipulator stacks 2 solar wafer on bottom plate 5, wherein, solar wafer stainless steel face and the contact of bottom plate 5, and the cladding material face upwards, the bottom plate vacuum is opened, adsorbs solar wafer on bottom plate 5 through vacuum adsorption or magnetic disk.

2. After the solar cell piece adsorbs bottom plate 5, bottom plate 5 will move to voltage measurement region, and the cylinder pushes down this moment, drives whole probe 4 and moves down, and at this moment, there are 12 negative pole probes and the coating face contact of solar cell piece on every solar cell piece, has 2 anodal probes and bottom plate 5 contacts, because the stainless steel face laminating of end 5 and solar cell piece, what this probe was connected is solar cell piece anodal promptly.

3. The simulation light source 3 is always in a lighting state, after the probe 4 is pressed down to the right position, a motor connected with the guide rail is started to drive the whole support 1 and the probe 4 to slide, the simulation light source 3 always irradiates on the solar cell, the probe 4 always contacts with the solar cell and the bottom plate, and the system collects voltages measured by the anode and the cathode of the solar cell at intervals of 5mm (any distance can be set according to process requirements).

4. After the whole probe 4 passes through the solar cell, the support 1 stops moving on the guide rail, the whole probe 4 is lifted by the movement of the air cylinder, and after the whole support 1 is lifted, the whole support moves reversely to return to the initial position.

5. And repeating the steps 1-5 to measure the voltage of the new 2 solar cells.

Therefore, the voltage measurement of the solar cell can be realized by adopting the measuring equipment, the operation is simple, the operation is convenient and fast, the labor intensity is low, and the working efficiency is high.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A voltage measuring apparatus of a solar cell, characterized by comprising: the device comprises a bracket, a driving mechanism, an analog light source, a probe and a bottom plate;

the probe is positioned below the simulation light source;

2. The measurement device of claim 1, wherein the carriage is attached to a longitudinal rail, the longitudinal rail having a motor mounted thereon.

3. A measuring device according to claim 1, wherein the drive mechanism comprises a pneumatic cylinder or a lead screw.

4. A measuring device as claimed in claim 1, characterized in that the elastic element comprises a spring or a bristle made of flexible, electrically conductive fibres.

5. The measurement device according to any one of claims 1 to 4, wherein the base plate is a metal base plate, and a hole is provided in the base plate, and the base plate can absorb the solar cell through the hole and a vacuum device.

6. The measurement device according to any one of claims 1 to 4, wherein the base plate is an electromagnetic chuck capable of adsorbing solar cells by the power-on state of the base plate.

7. The measurement device of claim 1, wherein the probe comprises a positive probe and a negative probe, the negative probe being in contact with a coating side of the solar cell; the positive electrode probe is in contact with the bottom plate.

8. The measurement device of claim 7, wherein the number of solar cells is 1 or more.

9. The measurement apparatus according to claim 7, wherein the negative electrode probes are disposed at intervals of 0 to 10 mm.