A flower basket structure for a thin solar cell sheet

Abstract

The present invention relates to the technical field related to silicon wafer carriers, and discloses a carrier structure for thin solar cell wafers, which includes end plates and slot rods arranged between the end plates. A plurality of card slots are provided on the slot rods, connection parts are provided on the end plates, spring areas are provided on the connection parts, the spring areas are integrally formed with the connection parts, the end parts of the slot rods are respectively connected to the spring areas, a rotatable adjustment rod is installed on the connection parts, at least two sides with different distances from its rotation center are provided on the adjustment rod, the adjustment rod abuts against the slot rod. By providing the slot rod and the adjustment rod, when the size between the card slots needs to be adjusted, only the adjustment rod needs to be rotated to achieve it. Compared with the method of providing card slots on multiple sides of the wafer inserting rod, no slots need to be opened on the adjustment rod in this application, and the strength is higher. Moreover, only the slot rod has card slots, avoiding the problems of easy accumulation of impurities and contamination with more solutions caused by the existence of many idle card slots.

Description

Technical Field

[0001] The present invention relates to the technical field related to wafer carriers, and specifically to a cassette structure for thin wafers of solar cells. Background Art

[0002] During the preparation of solar cells, wafers need to be placed in a wafer cassette for cleaning. Existing wafer cassettes usually consist of inserting rods and cassette end plates. A number of slots for placing wafers are formed on the inserting rods, and the distance between the slots on both sides is generally fixed, that is, a single wafer cassette can only be suitable for wafers of a single size and is difficult to compatibly carry wafers of other sizes. When it is necessary to carry wafers of other sizes, a new wafer cassette needs to be purchased again, resulting in an increase in the preparation cost of solar cell wafers. At present, there are also cassettes that can change the distance between the slots, such as a movable tooth wet cassette for adapting to wafers of multiple sizes in Chinese Patent CN202020093286.3, which adjusts the size between the slots by setting slots with different depths on different sides of the inserting rod and then adjusting through the rotation of the slots. In this way, there are more slots on the inserting rod. When the inserting rod has the same diameter, the strength will be reduced and it is easy to bend and deform. Moreover, more slots are prone to accumulating impurities, which has certain drawbacks. There is also a method of adjusting the size by setting the inserting rod to be slidable. In this way, the overall structure of the cassette becomes complex, adding more movable parts. Since the solution is generally an acidic or alkaline solution with corrosiveness during the cleaning of the cassette, adding more external parts will reduce the service life of the cassette, and it is not easy to process, and the adjustment accuracy is also low. In view of the above problems, this application is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a cassette structure for thin wafers of solar cells to solve the above problems.

[0004] The present invention is realized through the following technical solutions.

[0005] A cassette structure for thin wafers of solar cells of the present invention includes end plates and a slotting rod disposed between the end plates. A number of slots are provided on the slotting rod. A connecting portion is provided on the end plate. A spring area is provided on the connecting portion. The spring area is integrally formed with the connecting portion. The end portions of the slotting rod are respectively connected to the spring area. A rotatable adjusting rod is installed on the connecting portion. At least two sides with different distances from its rotation center are provided on the adjusting rod. The adjusting rod abuts against the slotting rod.

[0006] Further, it further includes a support rod. An inserting space is formed between the support rod and the slotting rod.

[0007] Further, the adjusting rod is detachably connected to the connecting portion.

[0008] Further, an installation groove is provided on the connecting portion, and the installation groove is divided into a rotation area and an installation area.

[0009] Further, a blocking block is installed in the installation area.

[0010] Further, at least three groups of spring areas are provided.

[0011] Further, the spring area is made of PVDF material.

[0012] Further, the end plate includes a plastic layer, and a reinforcing inner plate is covered inside the plastic layer.

[0013] Further, the adjusting rod includes a carbon fiber rod, and a plastic layer is covered outside the carbon fiber rod.

[0014] Further, the plastic layer of the end plate and / or the adjusting rod is PVDF.

[0015] Advantages of the present invention:

[0016] By providing the slot rod and the adjusting rod, when it is necessary to adjust the size between the slots, only by rotating the adjusting rod can it be achieved. Compared with the method of setting slots on multiple sides of the insertion piece rod, there is no need to open slots on the adjusting rod in this application, and the strength is higher. And there are only slots on the slot rod, which avoids the problems of easy accumulation of impurities and more solution contamination caused by the existence of more idle slots;

[0017] Compared with the method of setting a movable insertion piece rod, the adjustment method of this application is more accurate, and the size will not change during continuous actions and collisions, thus avoiding squeezing and knocking on the silicon wafer, and further avoiding breakage such as chipping of the silicon wafer. At the same time, the structure for realizing adjustment in the present invention is simple, and there is no need to add too many parts, such as slide rails, screws, bolts, gaskets, etc. Among them, the spring area adopted is integrally formed, and the manufacturing and processing are simple and efficient. And like other areas, the spring area also adopts a corrosion-resistant plastic material, which ensures the durability of the flower basket and improves the service life of the flower basket;

[0018] By setting the adjusting rod to be detachable, it can be replaced according to needs to meet a larger size adjustment range. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of a flower basket structure for a thin film of a solar cell according to the present invention;

[0022] Figure 2 is Figure 1 The upward view structure diagram of the upper side connecting portion in the middle

[0023] Figure 3 It is an enlarged structure diagram of the connection part between the connection part and the slot rod;

[0024] Figure 4 It is a top view structure diagram of the adjusting rod. Specific embodiments

[0025] The following combines Figures 1-4 to describe the present invention in detail.

[0026] A flower basket structure for a thin film of a solar cell according to the present invention, as Figure 1 , includes end plates 1 and slot rods 41 arranged between the end plates 1. A plurality of card slots 4 are provided on the slot rods 41. Preferably, 50 or 100 card slots 4 are provided. Connection parts 2 are provided on the end plates 1. There are four groups of connection parts 2, two groups on the left and two groups on the right. Correspondingly, there are also four groups of slot rods 41 and adjusting rods 3. The support rod 5 is located between the two side slot rods 41. An insertion space is formed between the support rod 5 and the slot rod 41. The silicon wafers are inserted into the card slots 4 through an inserter.

[0027] A spring area 23 is provided on the connection part 2. The spring area 23 and / or the connection part 2 is made of PVDF (polyvinylidene fluoride). The spring area 23 and the connection part 2 are integrally injection-molded, or the spring area 23 is hollowed out on the connection part 2 after the connection part 2 is injection-molded. The two ends of the slot rod 41 are respectively connected to the spring area 23. It is also possible to integrally injection-mold the connection part 2 and the slot rod 41. A rotatable adjusting rod 3 is installed on the connection part 2. The adjusting rod 3 has at least two sides at different distances from its rotation center. As Figure 4 , it has a relatively close side 33 and a relatively far side 32. The side of the adjusting rod 3 abuts against the side of the slot rod 41 without a card slot, and the width of the side of the adjusting rod 3 is greater than the width of the side of the slot rod 41, ensuring that the slot rod 41 is uniformly stressed and not easily bent.

[0028] Usage steps: By rotating the adjusting rod 3, the sides of different heights of the adjusting rod 3 are abutted against the slot rod 41. The slot rod 41 generates displacement under the action of the adjusting rod 3 and the spring area 23, realizing the adjustment of the size between the card slots 4, and thus being able to adapt to silicon wafers of different sizes, reducing the procurement and replacement cost of the flower basket.

[0029] Advantageously, as Figure 2 , an installation groove 25 is provided on the connecting portion 2. The installation groove 25 is divided into a rotation area 22 and an installation area 21. The depth of the rotation area 22 is equal to or greater than the depth of the installation area 21. The end of the adjusting rod 3 has a thin shaft end 31. A bearing can be arranged in the rotation area 22 or the rotation area 22 is in precise fit with the thin shaft end 31, so that rotation can be realized. When the depth of the rotation area 22 is greater than the depth of the installation area 21, the adjusting rod 3 is moderately bent during installation for installation, thereby realizing the detachable installation of the adjusting rod 3.

[0030] Optionally, a plug block is installed in the installation area 21 to ensure the stability of the installation position of the adjusting rod 3.

[0031] Advantageously, at least three groups of spring areas 23 are provided.

[0032] Advantageously, the end plate 1 includes a plastic layer, and a reinforcing inner plate is covered in the plastic layer.

[0033] Advantageously, the adjusting rod 3 includes a carbon fiber rod, and a plastic layer is covered outside the carbon fiber rod.

[0034] Advantageously, the plastic layer of the end plate 1 and / or the adjusting rod 3 is PVDF.

[0035] Advantageously, the above-mentioned can be made of PVDF, or can be made of perfluoroethylenepropylene or polytetrafluoroethylene.

[0036] The above embodiments are only for explaining the technical concept and features of the present invention, and the purpose is to enable those skilled in this field to understand the content of the present invention and implement it, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A flower basket structure for a thin slice of solar cell, characterized in that: The invention comprises an end plate (1) and a slot rod (41) arranged between the end plates (1), the slot rod (41) being provided with a plurality of slots (4), the end plate (1) being provided with a connecting portion (2), the connecting portion (2) being provided with a spring area (23), the spring area (23) and the connecting portion (2) being integrally formed, the ends of the slot rod (41) being respectively connected to the spring area (23), the connecting portion (2) being provided with a rotatable adjustment rod (3), the adjustment rod (3) having at least two side surfaces at different distances from its rotation center, the adjustment rod (3) being in contact with the slot rod (41); and the adjustment rod (3) being detachably connected to the connecting portion (2).

2. The flower basket structure for a thin slice of solar cell according to claim 1, characterized in that: It also comprises a support rod (5), wherein an inserting space is enclosed between the support rod (5) and the slot rod (41).

3. The flower basket structure for a thin slice of solar cell according to claim 1, characterized in that: The connecting portion (2) is provided with a mounting groove (25), and the mounting groove (25) is divided into a rotation area (22) and a mounting area (21).

4. The flower basket structure for a thin slice of solar cell according to claim 3, characterized in that: A blocking block is installed in the installation area (21).

5. The flower basket structure for a thin slice of solar cell according to any one of claims 1-4, characterized in that: The spring areas (23) are provided in at least three groups.

6. The flower basket structure for a thin slice of solar cell according to claim 5, characterized in that: The spring area (23) is made of PVDF material.

7. The flower basket structure for a thin slice of solar cell according to claim 6, characterized in that: The end plate (1) comprises a plastic layer, wherein a reinforcing inner plate is coated in the plastic layer.

8. The flower basket structure for a thin slice of solar cell according to claim 7, characterized in that: The adjusting rod (3) comprises a carbon fiber rod, and the carbon fiber rod is coated with a plastic layer.

9. The flower basket structure for a thin slice of solar cell according to claim 8, characterized in that: The plastic layer of the end plate (1) and / or the adjusting rod (3) is PVDF.

Images