CN213484819U

CN213484819U - IBC battery testing arrangement

Info

Publication number: CN213484819U
Application number: CN202022386249.4U
Authority: CN
Inventors: 廖光明; 徐建华; 吴仕梁
Original assignee: Wuxi Rituo Photovoltaic Technology Co ltd
Current assignee: Wuxi Rituo Photovoltaic Technology Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-06-18
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses an IBC battery testing device, which comprises a non-reflective glass and a bracket, an IBC battery piece to be tested, a probe row and a probe bracket; the non-reflective glass is uniformly distributed with round through holes on the surface thereof so as to prevent the non-reflective glass from being adsorbed on the lower surface of the glass after the IBC battery testing is finished; the non-reflective glass is fixed on the support, the probe row is positioned under the glass sheet, and an IBC battery sheet to be tested is arranged between the glass and the probe row; the probe rows are fixed on the probe support and are distributed in parallel and uniformly, and the probe rows are aligned to the back of the IBC battery piece to be tested. The IBC battery testing device provided by the invention has the advantages of accurate electrical property test, low fragment rate and the like.

Description

IBC battery testing arrangement

Technical Field

The application relates to the technical field of photovoltaic cell assemblies, in particular to an IBC cell testing device.

Background

With the increasing demand for cost reduction and efficiency improvement in the photovoltaic industry, the development and mass production of high-efficiency cells are imperative, wherein the IBC (intermediate back contact) cell can improve the utilization rate of photons due to the fact that the front surface is not shielded by a metal electrode, and is easily compatible with other high-efficiency processes, such as HIT and topcon structures, so that the IBC (intermediate back contact) cell has a very deep potential and a wide market prospect in the aspect of photoelectric conversion efficiency, and the maximum efficiency record of the existing single-crystal silicon cell is 26.6%, namely the IBC and the HIT process are overlapped to realize the high-efficiency cell.

However, the traditional IBC battery testing device adopts a mode of combining probe contact with vacuum adsorption, and the testing mode can generate large pressure at the local part of the battery piece to be tested, which easily causes the problem of breaking, thereby reducing the production yield.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to the not enough of above-mentioned prior art, the utility model provides a IBC battery testing arrangement reduces the great pressure that contact probe produced at the cell piece part that awaits measuring, makes the electrical property test of IBC battery become accurate, has reduced the fragment rate.

The utility model relates to an IBC battery testing device, which comprises a non-reflective glass and a bracket, an IBC battery piece to be tested, a probe row and a probe bracket; the non-reflective glass is uniformly distributed with round through holes on the surface thereof so as to prevent the non-reflective glass from being adsorbed on the lower surface of the glass after the IBC battery testing is finished;

the non-reflective glass is fixed on the support, the probe row is positioned under the glass sheet, and an IBC battery sheet to be tested is arranged between the glass and the probe row;

the probe rows are fixed on the probe support and are distributed in parallel and uniformly, and the probe rows are aligned to the back of the IBC battery piece to be tested.

Furthermore, the back of the IBC battery piece is provided with positive electrode main grid lines and negative electrode main grid lines which are distributed at intervals, positive electrode fine grid lines which are communicated with the positive electrode main grid lines, and negative electrode fine grid lines which are communicated with the negative electrode main grid lines.

Furthermore, the through holes in the non-reflective glass are prevented from being formed right above contact points of the probes and the battery piece to be tested, and breakage during testing is avoided.

The probe row is divided into a positive electrode probe row and a negative electrode probe row, the positive electrode probe row and the negative electrode probe row are arranged at intervals, and the metal probes on the positive electrode probe row are directly contacted with the positive electrode main grid or pad points on the positive electrode main grid; and the metal probes on the negative electrode probe row are directly contacted with the negative electrode main grid or pad points on the negative electrode main grid, and are forbidden to be contacted with the positive electrode fine grid line.

As an optimal implementation mode of this application, be equipped with 5 x 5 array through-hole on the no reflection of light glass, just the through-hole is the circular setting that the diameter is 3mm, and the interval is 20 ~ 30mm between two adjacent through-holes.

Compared with the prior art, the utility model relates to a IBC battery testing arrangement has following beneficial effect:

the IBC battery testing device provided by the invention has the advantages of accurate electrical property test, low fragment rate and the like.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the use of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a perspective view of an IBC battery testing apparatus according to the present invention;

fig. 2 is a front view of an IBC battery testing apparatus according to the present invention;

fig. 3 is a left side view of an IBC battery testing apparatus according to the present invention;

wherein: 1 is glass support, 2 is no reflection of light glass, 3 is the round hole structure, 4 is the IBC battery piece that awaits measuring, 5 is the probe row, 6 is the metal probe, and 7 is the probe support.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

the probe rows are fixed on the probe support and are distributed in parallel and uniformly, and the probe rows are aligned to the back of the IBC battery piece to be tested

As shown in fig. 1, after an IBC cell 4 to be tested is conveyed to a testing position by a conveyor belt, the whole probe system including the probe holder 7 and the probe bank 5 moves vertically upward, so that the metal probes 6 embedded in the probe bank are pressed on the main grid or pad position on the main grid on the back of the IBC cell, the probe system continues to move upward until the front of the cell is completely contacted with the non-reflective glass 2, and a proper amount of pressure exists between the cell and the non-reflective glass, so as to ensure that the metal probes and the back of the cell form a good ohmic contact.

Further, the probe bank includes a positive electrode probe bank and a negative electrode probe bank arranged at intervals, as shown in fig. 3, and the positive electrode probe bank should avoid contact with the negative electrode fine grid line, and the negative electrode probe bank should avoid contact with the positive electrode fine grid line.

Furthermore, the non-reflective glass is fixed on the glass support 1, the light transmittance in a visible light wave band can reach 99%, and the circular apertures 3 with a certain size are uniformly distributed in the surface of the glass to prevent the non-reflective glass from being adsorbed on the lower surface of the glass after the IBC battery is tested, and the positions of the circular apertures are prevented from being directly above the contact points of the metal probes and the battery pieces to be tested, so that the pieces are prevented from being broken.

This patent is used for testing IBC battery piece, and this battery piece openly does not have any metal grid line, and consequently the test back battery piece adsorbs easily at glass's lower surface, can influence test speed, consequently for preventing to adsorb, can be equipped with the round hole on glass.

The IBC battery testing device provided by the invention has the advantages of accurate electrical property test, low fragment rate and the like, and is very suitable for commercial popularization. While there have been shown and described the fundamental principles of the invention, its principal features and advantages, it will be understood by those skilled in the art that the invention is not limited to the embodiments described above, which are intended as illustrations of test principles of the invention, but of variations and modifications within the spirit and scope of the invention, which will fall within the scope of the appended claims.

Claims

1. The IBC battery testing device is characterized by comprising non-reflective glass, a bracket, an IBC battery plate to be tested, a probe row and a probe bracket; the non-reflective glass is uniformly distributed with round through holes on the surface thereof so as to prevent the non-reflective glass from being adsorbed on the lower surface of the glass after the IBC battery testing is finished;

2. The IBC battery testing device of claim 1, wherein the IBC battery piece is provided with positive electrode main grid lines and negative electrode main grid lines at intervals on the back surface, positive electrode fine grid lines communicated with the positive electrode main grid lines and negative electrode fine grid lines communicated with the negative electrode main grid lines.

3. The IBC battery testing device of claim 2, wherein the through holes on the non-reflective glass are positioned to avoid the occurrence of contact points between the probes and the battery piece to be tested, thereby avoiding the breakage of the battery piece during testing.

4. The IBC battery testing device of claim 2 or 3, wherein the probe bank is divided into a positive electrode probe bank and a negative electrode probe bank, the positive electrode probe bank and the negative electrode probe bank are arranged at intervals, and the metal probes on the positive electrode probe bank are in direct contact with the pad points on the positive electrode main grid or the positive electrode main grid; and the metal probes on the negative electrode probe row are directly contacted with the negative electrode main grid or pad points on the negative electrode main grid, and are forbidden to be contacted with the positive electrode fine grid line.

5. The IBC battery testing device of claim 4, wherein the non-reflective glass is provided with a 5 x 5 array of through holes, the through holes are arranged in a circular shape with a diameter of 3mm, and the interval between two adjacent through holes is 20-30 mm.