CN214756249U

CN214756249U - IBC solar cell electrode IV testing arrangement

Info

Publication number: CN214756249U
Application number: CN202023162983.9U
Authority: CN
Inventors: 石强; 林纲正; 陈刚
Original assignee: Zhejiang Aiko Solar Energy Technology Co Ltd; Guangdong Aiko Technology Co Ltd; Tianjin Aiko Solar Energy Technology Co Ltd
Current assignee: Zhejiang Aiko Solar Energy Technology Co Ltd; Guangdong Aiko Technology Co Ltd; Tianjin Aiko Solar Energy Technology Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-11-16
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses an IBC solar cell electrode IV testing device, which is used for carrying out IBC cell IV test and comprises an upper light source, a test back plate, a positive electrode probe group and a negative electrode probe group which are arranged on the test back plate; the upper light source is arranged above the test backboard, and the IBC battery piece is placed on the test backboard; a plurality of vacuum suction holes are formed in the test backboard; the positive electrode probe groups and the negative electrode probe groups are arranged in part of the vacuum suction holes at intervals, and the vacuum suction holes are reserved between any adjacent positive electrode probe groups and negative electrode probe groups. Adopt the utility model discloses, can obtain a simple structure, the suitability is high, and probe position is adjustable, can be used for the IBC solar cell electrode IV testing arrangement of multiple IBC battery piece test.

Description

IBC solar cell electrode IV testing arrangement

Technical Field

The utility model relates to a solar cell technical field especially relates to a IBC solar cell electrode IV testing arrangement.

Background

Ibc (interdigitated Back contact), which is a novel structure cell in which both the emitter region electrode and the base region electrode are disposed on the Back of the cell. The positive and negative electrodes of the IBC battery are distributed on the back of the battery piece in a crossed manner, and the positive electrode and the negative electrode are strictly physically separated, so that the short circuit caused by the conduction of the negative electrode can be prevented.

For the P-type IBC battery, because the service life of minority carriers is short, the shorter the moving path of the current carriers is, the better the moving path of the current carriers is, the recombination speed of the current carriers can be reduced, and the battery conversion efficiency is improved; therefore, the P-type IBC battery is prone to the design of matching a plurality of main grids with auxiliary grids, and carriers collected by the auxiliary grids are converged on the main grids uniformly; the main grid connects different battery pieces in series by means of welding, so that an IBC assembly is formed.

The IBC battery comprises a main grid type IBC battery and a non-main grid type IBC battery, wherein main grids of the main grid type IBC battery are distributed in an alternating mode, and the number of the main grids is 2 times that of a traditional PERC battery when the main grids are in the same transmission path; and the design of the main grid is various, and the number is many and the quantity is not uniform. The structure of the main-grid-free IBC battery is more complex, and the requirement on a testing device is high.

The current IV testing device is single in structure, cannot be compatible with electrical performance tests of batteries with different electrode patterns, is low in applicability, and manufacturers need to configure different IV testing devices according to different IBC batteries, so that the battery detection cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a IBC solar cell electrode IV testing arrangement is provided, simple structure, the suitability is high, and probe position is adjustable, can be used for the test of multiple IBC battery piece.

In order to solve the technical problem, the utility model provides an IBC solar cell electrode IV testing arrangement for carrying out IBC battery piece IV test, light source, test backplate, install positive electrode probe group and negative electrode probe group on the test backplate; the upper light source is arranged above the test backboard, and the IBC battery piece is placed on the test backboard; a plurality of vacuum suction holes are formed in the test backboard; the positive electrode probe groups and the negative electrode probe groups are arranged in part of the vacuum suction holes at intervals, and the vacuum suction holes are reserved between any adjacent positive electrode probe groups and negative electrode probe groups.

As an improvement of the above scheme, the vacuum suction holes are arranged in an array on the test backboard; the distances between the vacuum suction holes adjacent to each other in the same row are equal, and the distances between the vacuum suction holes adjacent to each other in the same column are equal.

As an improvement of the scheme, the distance between the vacuum suction holes adjacent to each other in the same row is 1-20 mm; the distance between the vacuum suction holes adjacent to each other in the same row is 1-20 mm.

As an improvement of the scheme, the diameter of the vacuum suction hole is 5-15 mm.

As a modification of the above, each of the positive electrode probe set and the negative electrode probe set includes a plurality of probes; the size of the probe is matched with that of the vacuum suction hole.

As an improvement of the scheme, the upper end surfaces of the probes are flat, and the upper end surfaces of the probes of the positive electrode probe group and the negative electrode probe group are mutually flush, so that the probes can support the IBC battery piece.

As an improvement of the scheme, the probe is 0.1-2mm higher than the surface of the test backboard.

As an improvement of the above scheme, the positive electrode probe group and the negative electrode probe group are respectively connected with electrode wires of a positive electrode and a negative electrode; the vacuum suction hole is connected with a vacuum pump.

As an improvement of the scheme, the test backboard is made of an insulating material.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses a test backplate is used for placing the IBC battery piece, the test backplate is equipped with a plurality of vacuum suction holes, positive electrode probe group and negative electrode probe group correspond according to the electrode pattern of the IBC battery piece of difference and insert in the vacuum suction hole, so that positive electrode probe group and negative electrode probe group are corresponding with the pattern of IBC battery piece to can realize the IV test to the IBC battery piece. The vacuum suction holes are reserved between any adjacent positive electrode probe group and negative electrode probe group, so that the vacuum suction holes are uniformly distributed below the IBC battery plate and are connected with a vacuum pump, the IBC battery plate is adsorbed on the test backboard through negative pressure, the IBC battery plate is prevented from sliding, and the test accuracy is improved. The upper end faces of the probes of the positive electrode probe group and the negative electrode probe group are flush with each other, so that the probes can support the IBC battery piece.

Adopt the utility model discloses, can obtain an IBC solar cell electrode IV testing arrangement, IBC solar cell electrode IV testing arrangement simple structure, the suitability is high, and probe position is adjustable, can be used for the test of multiple IBC battery piece.

Drawings

Fig. 1 is a schematic structural diagram of an electrode IV testing device for an IBC solar cell according to the present invention;

fig. 2 is a schematic structural diagram of the test backplane of the present invention;

fig. 3 is a schematic diagram of the connection structure of the test back plate and the positive electrode probe set and the negative electrode probe set of the present invention.

Detailed Description

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

Referring to fig. 1, the utility model provides an IBC solar cell electrode IV testing device for carrying out IV testing of IBC cell piece 1, including upper light source 2, testing backplate 3, positive electrode probe group 4 and negative electrode probe group 5; the IBC battery piece 1 is placed on the test backboard 3; the upper light source 2 is used for providing light source irradiation for testing, and the testing backboard 3 is used for supporting the IBC battery plate 1.

Referring to fig. 2 and 3, the test backplane 3 is provided with a plurality of vacuum suction holes 31, and the vacuum suction holes 31 are arranged in an array on the test backplane 3; the diameter of the vacuum suction hole 31 is 5-15 mm.

The distances between the vacuum suction holes 31 adjacent to each other in the same row are equal, and the distances between the vacuum suction holes 31 adjacent to each other in the same column are equal; specifically, the distance between the vacuum suction holes 31 adjacent to each other in the same row is 1-20 mm; the distance between the vacuum suction holes 31 adjacent to each other in the same row is 1-20 mm; the distance between the same rows and the distance between the same columns of the vacuum suction holes 31 may be the same or different.

The positive electrode probe groups 4 and the negative electrode probe groups 5 are arranged in partial vacuum suction holes 31 on the test back plate 3 at intervals, and the vacuum suction holes 31 are reserved between any adjacent positive electrode probe groups 4 and negative electrode probe groups 5, so that the vacuum suction holes 31 which are not inserted into the positive electrode probe groups 4 and the negative electrode probe groups 5 are uniformly distributed below the IBC battery plate 1, and the vacuumizing effect is ensured; a vacuum pump (not shown in the figure) generates negative pressure through the vacuum suction hole 31 between the positive electrode probe group 4 and the negative electrode probe group 5, adsorbs the IBC battery plate 1 on the test backboard, and enables the IBC battery plate 1 to be in close contact with the probes 6, so that the sliding of the IBC battery plate 1 is avoided, and the test accuracy is improved.

The positive electrode probe groups 4 and the negative electrode probe groups 5 can be inserted into the corresponding vacuum suction holes 31 according to the electrode patterns of different IBC battery sheets 1, so that the positive electrode probe groups 4 and the negative electrode probe groups 5 correspond to the patterns of the IBC battery sheets 1, and thus the IBC battery sheet testing device can be suitable for testing various IBC battery sheets 1.

When the electrode pattern of the IBC cell sheet 1 to be tested is changed, the positive electrode probe set 4 and the negative electrode probe set 5 may be pulled out, and the positive electrode probe set 4 and the negative electrode probe set 5 may be inserted into the vacuum suction holes 31 at positions directly below the positive electrode and the negative electrode of the IBC cell sheet 1 to be tested as needed.

The positive electrode probe group 4 and the negative electrode probe group 5 can be respectively in contact connection with the positive electrode and the negative electrode of the IBC battery piece 1, so that a loop is formed among the positive electrode probe group 4, the negative electrode probe group 5 and the IBC battery piece 1.

The positive electrode probe group 4 and the negative electrode probe group 5 each comprise a plurality of probes 6, and the probes 6 are detachably mounted on the test backboard 3; the upper end surfaces of the probes 6 are flat surfaces, and the upper end surfaces of the probes 6 of the positive electrode probe group 4 and the negative electrode probe group 5 are flush with each other, so that the probes 6 can stably support the IBC battery piece 1.

After the probe 6 is inserted into the vacuum suction hole 31, the height of the probe 6 is 0.1-2mm higher than the surface of the test backboard 3, so that the IBC battery plate 1 is in direct contact with the probe 6, and pollution or friction caused by the contact of the IBC battery plate 1 and the test backboard 3 is avoided.

It should be noted that the probes of the positive electrode probe group 4 and the probes of the negative electrode probe group 5 are respectively connected to electrode wires (not shown) of the positive electrode and the negative electrode, and are connected to a detection instrument to perform a test and collect test data.

The probe 6 is made of a metal material; the test backplane 3 is made of an insulating material to avoid short circuits.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. An IBC solar cell electrode IV testing device is used for carrying out IBC cell plate IV testing and is characterized by comprising an upper light source, a testing back plate, a positive electrode probe group and a negative electrode probe group, wherein the positive electrode probe group and the negative electrode probe group are arranged on the testing back plate;

the upper light source is arranged above the test backboard, and the IBC battery piece is placed on the test backboard; a plurality of vacuum suction holes are formed in the test backboard;

the positive electrode probe groups and the negative electrode probe groups are arranged in part of the vacuum suction holes at intervals, and the vacuum suction holes are reserved between any adjacent positive electrode probe groups and negative electrode probe groups.

2. The IBC solar cell electrode IV testing apparatus of claim 1, wherein the vacuum suction holes are arranged in an array on the test backplane; the distances between the vacuum suction holes adjacent to each other in the same row are equal, and the distances between the vacuum suction holes adjacent to each other in the same column are equal.

3. The IBC solar cell electrode IV test apparatus of claim 2, wherein a distance between the vacuum suction holes adjacent to the same row is 1-20 mm; the distance between the vacuum suction holes adjacent to each other in the same row is 1-20 mm.

4. The IBC solar cell electrode IV test apparatus of claim 1, wherein the vacuum suction holes have a diameter of 5-15 mm.

5. The IBC solar cell electrode IV testing apparatus of claim 1, wherein the positive electrode probe set and the negative electrode probe set each comprise a plurality of probes; the size of the probe is matched with that of the vacuum suction hole.

6. The IBC solar cell electrode IV testing apparatus of claim 5, wherein the upper end surfaces of the probes are planar, and the upper end surfaces of the probes of the positive electrode probe group and the negative electrode probe group are flush with each other, so that the probes can support the IBC cell sheet.

7. The IBC solar cell electrode IV testing apparatus of claim 5, wherein the probe is 0.1-2mm higher than the surface of the test backplane.

8. The IBC solar cell electrode IV test apparatus of claim 1, wherein the positive electrode probe set and the negative electrode probe set are connected to electrode wires of a positive electrode and a negative electrode, respectively; the vacuum suction hole is connected with a vacuum pump.

9. The IBC solar cell electrode IV testing apparatus of claim 1, wherein the test backplane is made of an insulating material.