CN216873163U

CN216873163U - IBC solar cell IV testing arrangement

Info

Publication number: CN216873163U
Application number: CN202220610099.7U
Authority: CN
Inventors: 戴燕华; 赵福祥
Original assignee: Hanwha SolarOne Qidong Co Ltd
Current assignee: Hanwha Q Cells Qidong Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-07-01
Anticipated expiration: 2032-03-18

Abstract

The utility model discloses an IBC solar cell IV testing device which is used for carrying out IV testing on an IBC cell, wherein the IV testing device sequentially comprises a first support, a second support and a light source from top to bottom, the first support comprises a plurality of groups of probe rows, the IBC cell is positioned between the second support and the light source, and the front side of the IBC cell is close to the light source; the second support is used for adsorbing the IBC battery piece, and the first support is used for moving downwards and is connected with the second support so that the probe row is in close contact with the IBC battery piece. The IBC solar cell IV testing device is convenient for visually observing the contact condition of the probe row and the main grid line and is beneficial to adjusting the probe row; meanwhile, the operation of daily equipment point inspection or equipment maintenance is facilitated; in addition, with the probe with adsorb the row and separately design, push down the probe through the mode of mechanical promotion, can guarantee the probe under the pressure effect with IBC battery piece in close contact with, guarantee the test accuracy.

Description

IBC solar cell IV testing arrangement

Technical Field

The utility model belongs to the technical field of solar cells, and particularly relates to an IBC solar cell IV testing device.

Background

Among various solar cells, the metal grid lines of the IBC (indirect Back contact) cell are all arranged on the Back side, so that the front side of the IBC cell is not shielded by any metal grid lines, and the IBC solar cell has more excellent electrical property. But also brings a severe test to the test of the electrical performance of the semiconductor device due to the special structure of the semiconductor device.

For example, chinese utility model patent CN 214756249U discloses an IBC solar cell electrode IV testing device, which comprises an upper light source, a testing back plate, a positive electrode probe set and a negative electrode probe set mounted on the testing back plate, wherein the upper light source is arranged above the testing back plate, and an IBC cell is placed on the testing back plate; the test backboard is provided with a plurality of vacuum suction holes. The vacuum suction hole is connected with the vacuum pump, so that the IBC battery piece is adsorbed on the test backboard through negative pressure, the IBC battery piece is prevented from sliding, and the test accuracy is improved. However, the light source is arranged above the battery piece, the light source emits downward from the upper side of the battery piece, the back of the battery piece faces downward to be in contact with the probe, and when whether the contact between the main grid line of the battery piece and the probe is good or the test equipment needs to be maintained is required to be observed, the probe is not easy to observe below the battery piece, so that a worker needs to bend down and bend over, and the maintenance difficulty is increased. In addition, the probe is directly arranged on the test backboard, and the battery piece is adsorbed on the test backboard through the vacuum suction hole and the negative pressure on the test backboard to be contacted with the probe, so that the test accuracy can be ensured only by the tight contact between the battery piece and the probe, and the tight contact between the battery piece and the probe is difficult to ensure by the adsorption force generated by the negative pressure.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to overcome the defects of the prior art and achieve the above object, the present invention provides an improved IBC solar cell IV testing apparatus, which is used to solve the problems that the testing apparatus in the prior art is inconvenient to observe and maintain, and the contact between the IBC cell and the probe is not tight, which results in inaccurate testing.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an IBC solar cell IV testing device which is used for carrying out IV testing on an IBC cell, wherein the IV testing device sequentially comprises a first support, a second support and a light source from top to bottom, the first support comprises a plurality of groups of probe rows, the IBC cell is positioned between the second support and the light source, and the front side of the IBC cell is close to the light source; the second support is used for adsorbing the IBC battery piece, and the first support is used for moving downwards and is connected with the second support so that the probe row is in close contact with the IBC battery piece.

The light source is arranged below the IBC battery piece, and the first support and the second support are respectively arranged above the IBC battery piece, so that the IBC battery piece receives light from the front side downwards, and the back side of the IBC battery piece is upwards contacted with the probe row, the contact condition of the probe row and the main grid line can be observed visually conveniently, and if the probe row is not aligned with the main grid line, the probe row can be adjusted more easily; the operation is more convenient when the daily equipment is checked or maintained. In addition, adsorb the IBC battery piece earlier through the second support, the mode of rethread mechanical promotion pushes down first support, makes first support and the fixed and probe row on the first support of second support can closely contact with the IBC battery piece under the pressure effect, guarantees the accuracy of test.

According to some preferred implementation aspects of the utility model, the first support comprises two first cross bars which are parallel to each other, a plurality of fixing parts are uniformly arranged on each first cross bar at intervals, and the straight line where the two corresponding fixing parts on the two first cross bars are located is parallel to the main grid line of the IBC battery piece. The fixing part is used for fixing the probe row, and the arrangement mode of the fixing part can prevent a part of the probe row from being incapable of contacting with the main grid line.

According to some preferred embodiments of the utility model, each group of the probe rows comprises one positive probe group and one negative probe group, and the main grid lines of the IBC cell piece comprise positive main grid lines and negative main grid lines; the positive electrode probe set is connected with the positive electrode main grid line, and the negative electrode probe set is connected with the negative electrode main grid line.

According to some preferred embodiments of the present invention, the two corresponding fixing portions of the two first crossbars are used for fixing the positive electrode probe sets or the negative electrode probe sets, and the positive electrode probe sets and the negative electrode probe sets on the first support are arranged at intervals. In some embodiments of the present invention, the fixing portion includes a fixing plate fixedly connected to the first cross bar and side plates located at both sides of the fixing plate, and a groove is formed between the fixing plate and the two side plates.

According to some preferred embodiments of the utility model, each of the positive electrode probe set and the negative electrode probe set comprises a bottom plate and probes uniformly arranged on the bottom plate at intervals, the length of the bottom plate is greater than or equal to the distance between two corresponding fixing parts on the two first cross bars, and the width of the bottom plate is greater than the width of a main grid line of the IBC battery piece. Two ends of the bottom plate are respectively accommodated in the grooves of the fixing part; in addition, screw holes are formed in two ends of the top surface of the fixing plate and used for fixing the bottom plate, after the bottom plate is fixedly connected with the fixing plate, only the probe can be ensured to be in close contact with the IBC battery piece, in some embodiments of the utility model, the length of the bottom plate is preferably equal to the distance between two corresponding fixing parts on the two first cross rods, and material waste is avoided; the width of the bottom plate is greater than the width of the main grid line of the IBC battery piece, the bottom plate can be ensured to completely cover the main grid line, and the probes are well contacted with the main grid line by adjusting the probe rows.

According to some preferable implementation aspects of the utility model, the second support comprises two second cross bars parallel to each other and two third cross bars parallel to each other, each second cross bar is provided with mounting parts uniformly arranged at intervals, and the straight line where the two corresponding mounting parts on the two second cross bars are located is parallel to the main grid line of the IBC battery piece.

According to some preferred embodiment aspects of the present invention, the second rack further comprises a plurality of adsorption rows, and each of the mounting parts comprises a convex region for fixing the adsorption rows and concave regions on both sides of the convex region for fixing the positive electrode probe group or the negative electrode probe group. In some embodiments of the present invention, a group of probe rows corresponds to at least four adsorption rows, that is, a group of probe rows includes a positive probe set and a negative probe set, and at least one adsorption row is disposed on each of two sides of one positive probe set; similarly, at least one adsorption row is arranged on each of two sides of one negative electrode probe group, so that the adsorbed IBC battery pieces are further fixed; in addition, when the probe down pushes down, adsorb to arrange and can play the effect of supporting the battery piece, reduce the probe simultaneously and down the stress that brings for the battery piece, reduce the piece rate of IBC battery piece.

According to some preferable implementation aspects of the utility model, the second cross bar, the third cross bar and the adsorption row are all provided with cavities inside, the bottom of the concave area is provided with a fixing hole, the side surface of the adsorption row attached to the concave area is provided with a bulge corresponding to the fixing hole, and the bulge is communicated with the corresponding second cross bar. Further, the second cross rod, the third cross rod and the adsorption row are provided with hollow cavities to form a hollow structure. The protrusions on the adsorption row correspond to the fixing holes on the concave area, and the adsorption row is preliminarily fixed on the second cross rod by inserting the protrusions into the fixing holes. Similar to the design of the fixing part, screw holes are also formed in two sides of the fixing hole of each concave area and used for fixing the adsorption row. After protruding and the fixed orifices is connected, further screw through on the concave area will adsorb row and second horizontal pole fixed connection, avoid adsorbing to arrange and drop.

According to some preferable implementation aspects of the utility model, the same side surface of the third cross bar and the adsorption row is provided with adsorption holes, the adsorption holes on the adsorption row are positioned on one side of the adsorption row away from the protrusions, and the plane where the adsorption holes on the third cross bar and the adsorption row are positioned is flush with the top surface of the convex area (the surface of the second cross bar close to the IBC battery piece); guarantee that the second support can adsorb the battery piece smoothly when adsorbing IBC battery piece, avoid the height uneven to lead to the battery piece can't be adsorbed. And the end part of at least one third cross rod is provided with a through hole, and the through hole is used for air inlet or air exhaust. Set up the through-hole at the tip of third horizontal pole, through with through-hole and vacuum pump connection, when needs adsorb the battery piece, through the evacuation of vacuum pump, because second horizontal pole, third horizontal pole and absorption row are cavity, and adsorb to arrange and communicate whole second support through the arch, and then usable negative pressure is fixed with the battery piece absorption.

In some embodiments of the present invention, the concave region in each of the mounting portions is formed by forming a through groove downward in a side of the second rail close to the suction hole, and the convex region is formed by forming a through groove upward in a side of the second rail far from the suction hole.

According to some preferred aspect of the utility model, the third cross bar has a length greater than a width of the IBC cell piece, and the second cross bar has a length less than the length of the IBC cell piece; the purpose of the design is mainly to fix the IBC battery piece by adsorption through the adsorption holes on the two third cross bars of the second support. The length of the adsorption row is greater than or equal to the distance between the two corresponding mounting parts on the second cross rod.

Compared with the prior art, the utility model has the advantages that: according to the IBC solar cell IV testing device, the contact condition of the probe row and the main grid line can be observed conveniently and visually, and the probe row is adjusted conveniently; the operation is more convenient when the daily equipment is checked or maintained; in addition, with the probe with adsorb the row and separately design, push down the probe through the mode of mechanical promotion, can guarantee the probe under the pressure effect with IBC battery piece in close contact with, guarantee the test accuracy.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of an IV test set in a preferred embodiment of the utility model;

FIG. 2 is a perspective view of a first rack of an IV test set without a probe card mounted thereto in accordance with a preferred embodiment of the utility model;

FIG. 3 is a perspective view of a second rack of the IV test apparatus without the suction row installed in accordance with the preferred embodiment of the present invention;

FIG. 4 is a perspective view of a positive or negative probe set of an IV testing apparatus according to a preferred embodiment of the utility model;

FIG. 5 is a perspective view of a first perspective of an adsorption row of an IV test apparatus in accordance with a preferred embodiment of the present invention;

FIG. 6 is a perspective view of a second perspective of the suction row of the IV test apparatus in a preferred embodiment of the utility model;

wherein the reference numerals include: the battery comprises a first bracket-1, a first cross bar-11, a fixing part-111, an anode probe group-12, a cathode probe group-13, a bottom plate-141, a probe-142, a second bracket-2, a second cross bar-21, a mounting part-211, a convex region-2111, a concave region-2112, a third cross bar-22, an adsorption row-23, a protrusion-231, a fixing hole-24, an adsorption hole-25, a through hole-26, a light source-3 and an IBC battery piece-4.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the IBC solar cell IV testing apparatus in this embodiment is used for performing IV testing on an IBC cell 4, and the IV testing apparatus sequentially includes a first support 1, a second support 2, and a light source 3 from top to bottom, the first support 1 includes a plurality of groups of probe rows, the IBC cell 4 is located between the second support 2 and the light source 3, and the front surface of the IBC cell 4 is close to the light source 3; the second support 2 is used for adsorbing the IBC battery piece 4, and the first support 1 is used for moving downwards and is connected with the second support 2 so that the probe row is in close contact with the IBC battery piece 4.

As shown in fig. 1 and fig. 2, the first bracket 1 of the present embodiment mainly includes two first cross bars 11 parallel to each other, a plurality of fixing portions 111 are uniformly disposed on each first cross bar 11 at intervals, and straight lines where the two corresponding fixing portions 111 on the two first cross bars 11 are located are parallel to the main grid lines of the IBC battery piece 4. The fixing portion 111 is used to fix the probe line, and is disposed in a manner that prevents a part of the probe line from being in contact with the main gate line. Each group of probe rows on the first bracket 1 comprises an anode probe group 12 and a cathode probe group 13, and the main grid lines of the IBC battery plate 4 comprise anode main grid lines and cathode main grid lines; wherein, positive electrode probe group 12 is connected with the positive electrode main grid line, and negative electrode probe group 13 is connected with the negative electrode main grid line. The two corresponding fixing portions 111 on the two first crossbars 11 are used for fixing the positive electrode probe groups 12 or the negative electrode probe groups 13, and the positive electrode probe groups 12 and the negative electrode probe groups 13 on the first support 1 are arranged at intervals.

In this embodiment, the fixing portion 111 includes a fixing plate fixedly connected to the first cross bar 11 and side plates located at two sides of the fixing plate, and a groove is formed between the fixing plate and the two side plates. As shown in fig. 4, the positive electrode probe group 12 and the negative electrode probe group 13 of the present embodiment have the same structure, and each of the positive electrode probe group 12 and the negative electrode probe group 13 includes a bottom plate 141 and probes 142 uniformly spaced on the bottom plate 141, and the length of the bottom plate 141 is preferably equal to the distance between two corresponding fixing portions 111 on two first cross bars 11, so as to avoid material waste; the width of the bottom plate 141 is greater than that of the main grid line of the IBC cell 4, so that the bottom plate 141 can completely cover the main grid line, and the probes 142 are in good contact with the main grid line by adjusting the probe rows. Both end portions of the bottom plate 141 are received in the grooves of the fixing portion 111, respectively. The bottom plate 141 is fixed at two ends of the top surface of the fixing plate through screw holes, and after the bottom plate 141 is fixedly connected with the fixing plate, the probes 142 are tightly contacted with the IBC cell 4.

As shown in fig. 1, 3, 5, and 6, the second rack 2 of this embodiment includes a plurality of adsorption rows 23, two second cross bars 21 parallel to each other, and two third cross bars 22 parallel to each other, each second cross bar 21 is provided with mounting portions 211 arranged at uniform intervals, and the straight line where the two corresponding mounting portions 211 on the two second cross bars 21 are located is parallel to the main grid line of the IBC battery piece 4. Each mounting portion 211 includes a convex region 2111 and concave regions 2112 on both sides of the convex region 2111, the concave regions 2112 holding the adsorption row 23, and the convex regions 2111 holding the positive electrode probe group 12 or the negative electrode probe group 13. The concave region 2112 in each mounting portion 211 is formed by opening a through groove downward in a face of the second rail 21 close to the suction hole 25, and each convex region 2111 is formed by opening a through groove upward in a face of the second rail 21 away from the suction hole 25. The length of the third cross bar 22 is greater than the width of the IBC cell 4, the length of the second cross bar 21 is less than the length of the IBC cell 4, and the IBC cell 4 is conveniently adsorbed and fixed by the adsorption holes 25 on the two third cross bars 22 of the second support 2. The length of the suction row 23 is preferably equal to the distance between the corresponding two mounting portions 211 on the two second rails 21.

Thereby second horizontal pole 21, third horizontal pole 22 and adsorb the inside of arranging 23 and all seted up the cavity and form hollow structure, fixed orifices 24 have been seted up to the bottom of concave area 2112, adsorb arrange 23 and be provided with arch 231 corresponding fixed orifices 24 on the side of concave area 2112 laminating, arch 231 and the second horizontal pole 21 intercommunication that corresponds. The protrusions 231 of the adsorption row 23 correspond to the fixing holes 24 of the concave regions 2112, and the adsorption row 23 is preliminarily fixed to the second cross bar 21 by inserting the protrusions 231 into the fixing holes 24. Similar to the design of the fixing portion 111, screw holes are formed on both sides of the fixing hole 24 of each concave portion 2112 for fixing the adsorption row 23. After the protrusions 231 are connected to the fixing holes 24, the suction bar 23 is further fixedly connected to the second rail 21 through the screw holes of the concave region 2112, so as to prevent the suction bar 23 from falling off. Adsorption hole 25 has all been seted up on the same side of third horizontal pole 22 and adsorption row 23, adsorption hole 25 on the adsorption row 23 is located adsorption row 23 and keeps away from one side of protruding 231, the plane at adsorption hole 25 place on third horizontal pole 22 and the adsorption row 23 flushes with the top surface of convex area 2111 (the one side that second horizontal pole 21 is close to IBC battery piece 4), guarantee that second support 2 can adsorb the battery piece smoothly when adsorbing IBC battery piece 4, avoid the uneven battery piece that leads to of height to be unable to be adsorbed. In this embodiment, through-hole 26 has been seted up to the tip of one of them in two third horizontal poles 22, through with through-hole 26 and vacuum pump connection, when needs adsorb the battery piece, through the vacuum pump evacuation, because second horizontal pole 21, third horizontal pole 22 and adsorb row 23 are all cavity, and adsorb row 23 and communicate whole second support 2 through arch 231, and then usable negative pressure adsorbs fixedly with the battery piece.

In this embodiment, one probe row corresponds to four adsorption rows 23, that is, two adsorption rows 23 are respectively disposed on two sides of one positive probe group 12; two sides of one negative electrode probe group 13 are respectively provided with an adsorption row 23, so that the adsorbed IBC battery plates 4 are further fixed; in addition, when the probe 142 is pressed downwards, the adsorption row 23 can play a role in supporting the battery piece, and meanwhile, stress brought to the battery piece when the probe 142 is pressed downwards is reduced, and the fragment rate of the IBC battery piece 4 is reduced.

The above-mentioned embodiments are provided only for illustrating the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention by this, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. An IBC solar cell IV testing device is used for carrying out IV testing on an IBC cell, and is characterized in that the IV testing device sequentially comprises a first support, a second support and a light source from top to bottom, the first support comprises a plurality of groups of probe rows, the IBC cell is located between the second support and the light source, and the front side of the IBC cell is close to the light source; the second support is used for adsorbing the IBC battery piece, and the first support is used for moving downwards and is connected with the second support so that the probe row is in close contact with the IBC battery piece.

2. The IV test device of claim 1, wherein the first support comprises two first cross bars parallel to each other, a plurality of fixing parts are uniformly arranged on each first cross bar at intervals, and the straight line of the two corresponding fixing parts on the two first cross bars is parallel to the main grid line of the IBC battery piece.

3. The IV testing apparatus of claim 2, wherein each group of the probe rows comprises one positive probe group and one negative probe group, and the main grid lines of the IBC cell piece comprise positive main grid lines and negative main grid lines; the positive electrode probe set is connected with the positive electrode main grid line, and the negative electrode probe set is connected with the negative electrode main grid line.

4. The IV testing apparatus according to claim 3, wherein the two fixing portions of the two first crossbars are used for fixing the positive electrode probe set or the negative electrode probe set, and the positive electrode probe set and the negative electrode probe set are arranged at intervals on the first support.

5. The IV test device according to claim 3, wherein the positive electrode probe group and the negative electrode probe group each comprise a bottom plate and probes uniformly spaced on the bottom plate, the length of the bottom plate is greater than or equal to the distance between two corresponding fixing parts on the two first cross bars, and the width of the bottom plate is greater than the width of a main grid line of the IBC battery piece.

6. The IV test device according to claim 3, wherein the second support comprises two second cross bars parallel to each other and two third cross bars parallel to each other, each second cross bar is provided with mounting parts arranged at regular intervals, and the straight line where the two corresponding mounting parts on the two second cross bars are located is parallel to the main grid line of the IBC battery piece.

7. The IV testing apparatus of claim 6, wherein the second rack further comprises a plurality of adsorption rows, each of the mounting portions comprises a convex region and concave regions located at both sides of the convex region, the concave regions are used for fixing the adsorption rows, and the convex regions are used for fixing the positive electrode probe set or the negative electrode probe set.

8. The IV testing device according to claim 7, wherein the second cross bar, the third cross bar and the adsorption row are all provided with a cavity inside, the bottom of the concave area is provided with a fixing hole, a protrusion is arranged on the side surface of the adsorption row attached to the concave area corresponding to the fixing hole, and the protrusion is communicated with the corresponding second cross bar.

9. The IV test device according to claim 8, wherein the third cross bar and the adsorption row are provided with adsorption holes on the same side surface, the adsorption holes on the adsorption row are positioned on the side of the adsorption row away from the protrusions, and the planes of the adsorption holes on the third cross bar and the adsorption row are flush with the top surface of the convex area; and the end part of at least one third cross rod is provided with a through hole, and the through hole is used for air inlet or air exhaust.

10. The IV testing apparatus of claim 9, wherein the third cross-bar has a length that is greater than a width of the IBC cell sheet, and the second cross-bar has a length that is less than the length of the IBC cell sheet; the length of the adsorption row is greater than or equal to the distance between the two corresponding mounting parts on the second cross rod.