CN215072323U

CN215072323U - IV testing device for main-grid-free solar cell

Info

Publication number: CN215072323U
Application number: CN202121496819.3U
Authority: CN
Inventors: 黄雷; 周瑞东
Original assignee: Changzhou Shichuang Energy Co Ltd
Current assignee: Changzhou Shichuang Energy Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-12-07
Anticipated expiration: 2031-07-01

Abstract

The utility model discloses an IV test device for a solar cell without a main grid, which comprises a bearing platform and a probe row arranged above the bearing platform; the bearing table is made of metal materials and used for placing the solar cell without the main grid; the probe row comprises a probe row support and a plurality of telescopic probe groups, and conductive strips are arranged at the bottom ends of the probe groups. The utility model adopts the conductive bar to cover all the thin grid lines on the front of the solar cell without the main grid and form good contact, thereby avoiding the test error caused by the fact that the probe of the existing test device can not completely contact all the thin grid lines, and ensuring the accuracy of the efficiency test; the bearing table of the utility model adopts the metal plate to contact with the back of the battery, the contact is good, and the whole device has simple structure and is easy to realize; the utility model discloses can not influence the test accuracy because of the change of thin grid line interval, reduce the positive shading area of battery moreover, extensive applicability is general.

Description

IV testing device for main-grid-free solar cell

Technical Field

The utility model relates to a solar cell's IV testing arrangement especially relates to an IV testing arrangement for no main grid solar cell.

Background

The front side of the solar cell without the main grid is provided with the main grid lines and only the thin grid lines, the consumption of silver paste is greatly reduced, the single-tile cost of the solar cell without the main grid is reduced, the front side shading area of the solar cell without the main grid is reduced, and the current and the conversion efficiency of the solar cell are improved.

The existing IV testing device is used for a multi-main-grid battery, upper and lower probes inserted with probes are arranged and pressed on a main grid of the battery for testing, each probe is provided with a group of devices for collecting voltage and current, but in the face of a solar battery without a main grid, the number of thin grids reaches hundreds, the distance between the thin grids is very small, the probes cannot be completely pressed on the thin grids due to the overlarge probe distance of the existing IV testing device, even if the probe distance can meet the thin grid distance, the phenomenon that the front side of the battery is completely shielded can be caused, and the above problems can cause the existing IV testing device to fail to ensure the accuracy of the efficiency testing of the solar battery without the main grid.

Disclosure of Invention

The utility model aims at providing a IV testing arrangement for no main grid solar cell can guarantee the accuracy of efficiency test.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an IV test device for a solar cell without a main grid comprises a bearing table and a probe row arranged above the bearing table; the bearing table is made of metal materials and used for placing the solar cell without the main grid; the probe row comprises a probe row support and a plurality of telescopic probe groups, and conductive strips are arranged at the bottom ends of the probe groups.

Preferably, the front surface of the solar cell without the main grid is provided with a plurality of parallel fine grid lines, a plurality of fine grid segments are arranged on the fine grid lines, and the width of the conductive strip is consistent with the length of the fine grid segments.

Preferably, the conductive strip is a conductive adhesive strip or a conductive metal strip. Preferably, the conductive adhesive tape is a conductive silica gel strip, and the conductive metal strip can be a tin-plated solder strip or a copper strip.

Preferably, the number of the probe rows is 3-15. Further preferably, the number of the probe rows is 8-12.

Preferably, each probe row comprises at least one set of probes for collecting voltage and current.

Preferably, a plurality of first holes are formed in two sides of the bearing table, and the first holes are vacuum adsorption holes and used for adsorbing the solar cell without the main grid.

Preferably, a plurality of second holes are further formed in the middle of the bearing table, and a telescopic conductor is arranged inside each second hole and used for collecting voltage and current.

Preferably, the first hole and the second hole are equidistant.

Preferably, the bearing platform is a copper plate.

Compared with the prior art, the utility model adopts the conductive bars to cover all the thin grid lines on the front surface of the solar cell without the main grid and form good contact, thereby avoiding the test error caused by the fact that the probe of the existing test device can not completely contact all the thin grid lines and ensuring the accuracy of the efficiency test; the bearing table of the utility model adopts the metal plate to contact with the back of the battery, the contact is good, and the whole device has simple structure and is easy to realize; the utility model discloses can not influence the test accuracy because of the change of thin grid line interval, reduce the positive shading area of battery moreover, extensive applicability is general.

Drawings

Fig. 1 is a schematic front view of a masterless solar cell according to example 1 of the present invention;

fig. 2 is a schematic back view of a gridless solar cell according to embodiment 1 of the present invention;

fig. 3 is a front view of a probe row according to embodiment 1 of the present invention;

fig. 4 is a top view of the carrier table according to embodiment 1 of the present invention;

fig. 5 is a schematic view of the contact between the conductive adhesive tape and the front surface of the solar cell without the main grid according to embodiment 1 of the present invention;

fig. 6 is a top view of a carrier table according to embodiment 2 of the present invention;

fig. 7 is a cross-sectional view of a carrier table according to embodiment 2 of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1 and fig. 2, the utility model provides a no main grid solar cell 1, the battery openly is provided with many thin grid lines 11 that are parallel to each other, is provided with a plurality of thin grid segments 12 on every thin grid line 11, therefore every thin grid line 11 is discontinuous, and the purpose reduces the positive silver thick liquid consumption of battery, saves the cost; the back of the battery is provided with a back electrode 13, the back electrode 13 is perpendicular to the front fine grid lines 11, and the number of the back electrodes 13 can be adjusted according to the requirements of the battery.

Example 1

As shown in fig. 3, the IV testing apparatus for a solar cell without a main grid provided in this embodiment includes a carrier 2 and a probe row 3 disposed above the carrier 2, the probe row 3 includes a probe row holder 31 and a plurality of retractable probe sets 32, the probe row 3 is provided with 3 to 15, preferably 8 to 12, the probe row 3 of this embodiment is provided with 12, each probe row 3 includes at least one probe set 32 for collecting voltage and current, a conductive strip 33 is disposed at the bottom end of the probe set 32, and the conductive strip 33 is a conductive silica gel strip.

As shown in fig. 4, the carrier 2 is made of metal material and is used for placing the solar cell 1 without the main grid, the carrier 2 of this embodiment is a copper plate, a plurality of first holes 21 are disposed on the upper and lower sides of the carrier 2, and the first holes 21 are vacuum adsorption holes and are used for adsorbing the solar cell 1 without the main grid.

When the IV testing device for the solar cell without the main grid in the embodiment is used, the solar cell 1 without the main grid is placed on the bearing table 2, the first hole 21 adsorbs the back of the cell, the probe row 3 positioned at the top of the cell presses down to drive the conductive adhesive tape 33 at the bottom end of the probe set 32 to contact with the thin grid line 11 at the front of the cell, as shown in fig. 5, the conductive adhesive tape 33 is perpendicular to the thin grid line 11, the width of the conductive adhesive tape 33 is consistent with the length of the thin grid segment 12, after the conductive adhesive tape 33 is electrically connected with the thin grid line 11 at the front of the cell well, a simulated light source irradiates the surface of the cell to generate a photoelectric effect, current and voltage information are transmitted to a processor through the probe at the top of the cell, and an electrical performance test of the solar cell 1 without the main grid is completed.

Example 2

Different from embodiment 1, in the IV testing apparatus for a solar cell without a main grid according to this embodiment, as shown in fig. 6 and 7, a plurality of second holes 22 are further disposed in the middle of the carrier 2, the distances between the first holes 21 and the second holes 22 are equal, and a retractable conductive body 23 is disposed inside the second holes 22 for better contacting with the back surface of the cell, so as to facilitate collecting voltage and current. In this embodiment, the conductor 23 is a copper ball, and a spring is connected to the bottom of the conductor 23.

When the IV testing device for the solar cell without the main grid of the embodiment is used, the solar cell 1 without the main grid is placed on the bearing table 2, the first hole 21 absorbs the back surface of the cell, and the copper beads in the second hole 22 are jacked up to be in contact with the back electrode on the back surface of the cell; the probe row 3 positioned at the top of the battery presses down to drive the conductive adhesive tape 33 at the bottom end of the probe group 32 to be in contact with the thin grid line 11 on the front side of the battery, the conductive adhesive tape 33 is perpendicular to the thin grid line 11, the width of the conductive adhesive tape 33 is consistent with the length of the thin grid small section 12, when the conductive adhesive tape 33 is in good electrical contact with the thin grid line 11 on the front side of the battery, a simulation light source irradiates the surface of the battery to generate a photoelectric effect, current and voltage information are transmitted to a processor through the probe on the top of the battery, and the electrical performance test of the main-grid-free solar battery 1 is completed.

Example 3

Unlike embodiment 1, in the present embodiment, the conductive strip 33 is disposed at the bottom end of the probe group 32, where the conductive strip 33 is a tin-plated solder strip.

Example 4

Unlike embodiment 1, in the present embodiment, in the IV testing apparatus for a primary grid-less solar cell, the conductive strip 33 is disposed at the bottom end of the probe group 32, wherein the conductive strip 33 is a copper strip.

Claims

1. An IV test set for a masterless solar cell, comprising: comprises a bearing table and a probe row arranged above the bearing table; the bearing table is made of metal materials and used for placing the solar cell without the main grid; the probe row comprises a probe row support and a plurality of telescopic probe groups, and conductive strips are arranged at the bottom ends of the probe groups.

2. The IV testing apparatus for a masterless solar cell according to claim 1, wherein: the front surface of the solar cell without the main grid is provided with a plurality of fine grid lines which are parallel to each other, a plurality of fine grid segments are arranged on the fine grid lines, and the width of the conductive strip is consistent with the length of the fine grid segments.

3. The IV testing apparatus for a masterless solar cell according to claim 2, wherein: the conducting strips are conducting adhesive strips or conducting metal strips.

4. The IV testing apparatus for a masterless solar cell according to claim 1, wherein: the number of the probe rows is 3-15.

5. The IV testing apparatus for a masterless solar cell according to claim 4, wherein: each probe row includes at least one set of probes for collecting voltage and current.

6. The IV testing apparatus for a masterless solar cell according to claim 1, wherein: the two sides of the bearing table are provided with a plurality of first holes, and the first holes are vacuum adsorption holes and used for adsorbing the solar cell without the main grid.

7. The IV testing apparatus for a masterless solar cell according to claim 6, wherein: the middle position of plummer still is provided with a plurality of second holes, the inside in second hole is provided with the telescopic electric conductor for collect voltage and electric current.

8. The IV testing apparatus for a masterless solar cell according to claim 7, wherein: the first holes and the second holes are equal in distance.

9. The IV testing apparatus for a masterless solar cell according to claim 1, wherein: the plummer is the copper board.