CN211265432U - Flower basket device - Google Patents

Abstract

The utility model relates to a basket of flowers device that is arranged in bearing a plurality of solar wafer of size in the processing procedure more than 210mm, it includes two support walls and a plurality of bracing pieces. The two ends of each supporting rod are respectively connected with the two supporting walls, each supporting rod is perpendicular to the supporting walls, the supporting rods are divided into three groups, the axes of all the supporting rods in each group are located in the same virtual plane, the three virtual planes corresponding to the three groups can form a cuboid containing space with an opening on one side together with the two supporting walls, each supporting rod is provided with a plurality of tooth structures protruding towards the containing space, and the tooth space of each tooth structure is 6.3 +/-0.02 mm. According to the utility model, through improving the tooth spacing of the flower basket device, the adjacent large-size solar battery pieces are prevented from being laminated or collided due to gravity, liquid fluctuation, elastic deformation and the like in each process.

Description

Flower basket device

Technical Field

The utility model relates to an energy field especially relates to a bear basket of flowers device of a plurality of solar wafer in processing procedure.

Background

With the increasing consumption of conventional fossil energy such as global coal, oil, natural gas and the like, the ecological environment is continuously deteriorated, and particularly, the sustainable development of the human society is seriously threatened due to the increasingly severe global climate change caused by the emission of greenhouse gases. Various countries in the world make respective energy development strategies to deal with the limitation of conventional fossil energy resources and the environmental problems caused by development and utilization. Solar energy has become one of the most important renewable energy sources by virtue of the characteristics of reliability, safety, universality, long service life, environmental protection and resource sufficiency, and is expected to become a main pillar of global power supply in the future.

In a new energy revolution process, the photovoltaic industry in China has grown into a strategic emerging industry with international competitive advantages. However, the development of the photovoltaic industry still faces many problems and challenges, and the conversion efficiency and reliability are the biggest technical obstacles restricting the development of the photovoltaic industry, while the cost control and the scale-up are economically restricted.

The production process flow of the solar cell comprises the following steps of silicon wafer cutting and material preparation, damage layer removal, surface texturing and acid washing, diffusion knot making, phosphorosilicate glass removal, plasma etching and acid washing, antireflection film plating, screen printing, rapid sintering and the like. The silicon wafer needs to be processed in the above steps. For example, in the surface texturing, anisotropic etching of silicon is used, millions of tetrahedral pyramids, namely pyramid structures, are formed on the surface of each square centimeter of silicon, before preparing a textured surface, the silicon wafer needs to be subjected to primary surface etching, alkaline or acidic etching liquid is used for etching to remove about 20-25 μm, and after the textured surface is etched, chemical cleaning is performed. In addition, the step of removing the phosphorosilicate glass is to soak the silicon wafer in hydrofluoric acid solution through a chemical corrosion method to generate a chemical reaction to generate soluble complex hexafluorosilicic acid so as to remove a layer of phosphorosilicate glass formed on the surface of the silicon wafer after diffusion and junction preparation. In the above step of putting into strong alkali for making herbs into wool or putting into acid solution for cleaning, the flower basket device for bearing a plurality of solar cells in the manufacturing process is very important.

Particularly, in the actual production process of the battery piece, the rod groove flower basket is applied to a large number, and plays an important role in the texturing process of containing the original silicon chip and entering the groove body for the texturing process. In the texturing process, silicon wafers are brought into each process groove through the rod groove flower basket to carry out the process, and the conventional flower basket has less restriction, so that the silicon wafers have a large jumping range under the driving of liquid in the process of the process, and are easy to cause unfilled corners, large edge breakage and even fragments; the silicon wafers with large size are easy to be laminated due to less constraint, so that the surface texturing is not uniform; the silicon wafer is tightly attached to the teeth of the flower basket under the influence of gravity and liquid pressure in the process due to less constraint, and is not completely dried after being cleaned, so that the appearance flower basket mark is generated.

In addition, when the silicon wafer flows to the diffusion, etching and annealing process section in the manufacturing process, the rod-groove type flower basket also has certain damage to the silicon wafer. For example, during loading and unloading, due to the looseness of operators or the rapid movement of equipment, silicon wafers are subjected to stress concentration on rods; during feeding, the silicon wafers do not contact the belt at a preset time due to the sagging of the silicon wafers and enter the conveying process in advance, so that the feeding is blocked and the belt is printed. Meanwhile, as the size of the silicon wafer is increased and the distance between the original basket rods is large, the silicon wafer is easily touched when workers load and unload the silicon wafer, and the probability of generating fingerprints is increased.

Further, the existing flower basket is not particularly suitable for large-sized silicon wafers. The conventional flower basket cannot meet the requirement of normal elastic deformation of silicon wafers under the influence of external force due to too small space between teeth, so that part of the silicon wafers are laminated when entering a liquid process. When the lamination is processed in liquid, the surface process of the silicon wafer is uneven, and the effect of the battery piece is influenced; when the silicon wafers are taken out of the liquid, the two adjacent silicon wafers are bonded together due to the flowing-down of the surface liquid, and the liquid is carried out of the groove body. A large amount of laminations appear in the process section, liquid is polluted when the laminations are used for carrying liquid to another tank body process, liquid mixing and solution concentration are caused, and the laminations carry liquid medicine to enter a furnace body and are burnt to generate fragments on the surface of a silicon wafer after high temperature in the rear section.

There is thus a need to provide a flower basket device that at least partially solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a basket device for bearing a plurality of solar cells with the size of more than 210mm in the manufacturing process, and the basket device avoids overlapping due to gravity before entering a groove body by improving the space between the teeth; because the space between the solar cells is wide, liquid and liquid fluctuation excited when the solar cells enter the liquid when the flower basket device enters the cleaning tank cannot influence the adjacent solar cells; when the flower basket device is taken out of the liquid, the flower basket device cannot collide with each other when being influenced by the falling liquid to generate elastic deformation (protrusion); the space between two teeth of the flower basket device is enough, and liquid carried by two solar cell pieces due to partial overlapping of the two solar cell pieces cannot be carried under the deformation condition allowed by the solar cell pieces, so that the defect is caused.

The utility model discloses can also preferably provide adjustable basket of flowers device, set up partial bracing piece into adjustable in order to guarantee that each bracing piece can both fully contact and support solar wafer in practical application.

According to the utility model discloses an aspect provides a basket of flowers device for bear the weight of a plurality of solar wafer in the processing procedure that the size is more than 210mm, the basket of flowers device includes:

two support walls parallel to and facing each other;

the two ends of each supporting rod are respectively connected with the two supporting walls, each supporting rod is perpendicular to the supporting walls, the supporting rods are divided into three groups, the axes of all the supporting rods in each group are located in the same virtual plane, the three virtual planes corresponding to the three groups can form a cuboid containing space with an opening on one side together with the two supporting walls, and each supporting rod is provided with a plurality of tooth structures protruding towards the containing space,

wherein a plurality of the solar cell pieces can respectively enter the accommodating space through the openings and are supported by the support rods, and the solar cell pieces are separated from each other by the tooth structures.

In one embodiment, the first set of the three support rods corresponds to the virtual plane as a first plane, the second set of the three support rods corresponds to the virtual plane as a second plane, and the third set of the three support rods corresponds to the virtual plane as a third plane, wherein the first plane and the second plane are parallel and perpendicular to the third plane, and the first set of the support rods and the second set of the support rods are aligned one by one in a direction parallel to the third plane.

In one embodiment, the flower basket device is oriented such that the second plane is above the first plane, the opening facing sideways.

In one embodiment, the distance between any two adjacent support bars is the same for each set of support bars.

In one embodiment, for each set of the support rods, the distance between the two support rods that are furthest apart is 125mm to 135 mm.

In one embodiment, the support rod has a length of 540mm to 700 mm.

In one embodiment, the distance between the two pond structures furthest from the support bar is 476mm to 630mm for any one of the support bars.

In one embodiment, the distance between the first plane and the second plane is 156mm to 220 mm.

In one embodiment, the maximum dimension of the support wall in a direction perpendicular to the first plane is from 265mm to 275 mm;

the maximum dimension of the support wall in a direction perpendicular to the third plane is 265mm-275 mm;

the wall thickness of the supporting wall is 14mm-18 mm;

the distance between the surfaces of the two support walls facing away from each other is 550mm-710 mm.

In one embodiment, the edge of the support wall is provided with a recess for engaging other devices used in cooperation with the flower basket device.

In one embodiment, the basket device further comprises a retaining bar connected between the two support walls, the retaining bar being positioned at the opening for blocking the solar cell pieces at the opening after the solar cell pieces enter the receiving space, and there is a spacing between the solar cell pieces and the retaining bar when the solar cell pieces are carried in the basket device.

In one embodiment, the basket device is an adjustable basket device, wherein each set of the support rods is at least three, and each set of the support rods is further divided into a fixed support rod and an adjustable support rod, for each set of the support rods, the fixed support rods are two and fixed relative to the support wall, and the adjustable support rods are adjustable relative to the support wall such that the adjustable support rods can be manually or automatically adjusted to a coplanar state with the fixed support rods.

According to the utility model, the space between the teeth of the flower basket device is improved, so that the flower basket is prevented from being overlapped together due to gravity before entering the groove body; because the space between the solar cells is wide, liquid and liquid fluctuation excited when the solar cells enter the liquid when the flower basket device enters the cleaning tank cannot influence the adjacent solar cells; when the flower basket device is taken out of the liquid, the flower basket device cannot collide with each other when being influenced by the falling liquid to generate elastic deformation (protrusion); the space between two teeth of the flower basket device is enough, and liquid carried by two solar cell pieces due to partial overlapping of the two solar cell pieces cannot be carried under the deformation condition allowed by the solar cell pieces, so that the defect is caused. And the utility model discloses can also preferably provide adjustable basket of flowers device, set up some bracing pieces into adjustable in order to guarantee that each bracing piece can both fully contact and support solar wafer in practical application.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. Like reference numerals in the drawings refer to like parts. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention without any limiting effect on the scope of the invention, and that the various components in the drawings are not to scale.

Fig. 1 is a front view of a flower basket device according to a preferred embodiment of the present invention;

fig. 2 is a left side view of the flower basket device shown in fig. 1.

Detailed Description

Referring now to the drawings, specific embodiments of the present invention will be described in detail. What has been described herein is merely a preferred embodiment in accordance with the present invention, and those skilled in the art will appreciate that other ways of implementing the present invention on the basis of the preferred embodiment will also fall within the scope of the present invention.

The utility model provides a basket of flowers device for bearing a plurality of solar wafer in the processing procedure, this basket of flowers device are applicable to the solar wafer that bears in the processing procedure of various sizes, are particularly useful for the solar wafer that the size is greater than 220 mm. It should be noted that the term "in-process solar cell" as used herein includes the raw material (e.g., silicon wafer) of the solar cell, the semi-finished products of the solar cell during and between the manufacturing processes, and the finished products of the solar cell immediately after the manufacturing process.

Fig. 1 to 2 show a preferred embodiment according to the present invention. As can be seen in the attached figures, the flower basket device comprises two support walls 1 and a plurality of support rods 2. It should be noted that, first, the "first direction" mentioned herein refers to the extending direction of each support bar 2, which is shown by D1 in fig. 2; "second orientation" refers to the height direction of the flower basket device when having the orientation as shown in the drawings, which is shown by D2 in FIGS. 1 and 2; "third direction" refers to a direction perpendicular to both the first direction D1 and the second direction D2, shown in fig. 2 as D3; "first plane" and "second plane" refer to planes defined by the first direction D1 and the third direction D3 when the flower basket device has the orientation as shown in the drawings, which are shown by P1 and P2 in fig. 2, respectively; "third plane" means a plane defined by the first direction D1 and the second direction D2 when the flower basket device has the orientation as shown in the drawings, which is shown as P3 in fig. 2.

Refer to fig. 1 and 2. The two support walls 1 are parallel to each other and face each other, as are the individual support bars 2. Two ends of each support rod 2 are respectively connected with the two support walls 1, and the support rods 2 are perpendicular to the support walls 1. The support bars 2 are divided into three groups, and the axes of all the support bars 2 of each group are located in the same virtual plane.

For example, as shown in fig. 2, the axes of the first set of support rods 21 are co-located in a common virtual plane, which is referred to as a first plane P1; the axes of the second set of support rods 22 are co-located in a common virtual plane, referred to as the second plane P2; the axes of the third set of support bars 23 are located in the same virtual plane, which is called the third plane P3, and the first plane P1, the second plane P2, the third plane P3 and the two support walls 1 together enclose a rectangular parallelepiped containing space with an opening on one side, through which the solar cells can enter. And, each support rod 2 is provided with a plurality of tooth structures protruding towards the accommodating space, and the solar cells in the accommodating space are separated from each other by the tooth structures. The tooth space of each tooth structure is 6.3 +/-0.02 mm, so that lamination between adjacent solar cells is avoided when the solar cells with large sizes are loaded.

As can be seen in connection with fig. 2, the first plane P1 is parallel to the second plane P2 and is commonly perpendicular to the third plane P3. Also, if the basket device is arranged to have the orientation as shown in fig. 2, the second plane P2 is located above the first plane P1. As for the above-mentioned receiving space, the second set of support bars 22 defines the top surface of the receiving space, the first set of support bars 21 defines the bottom surface of the receiving space, the third set of support bars 23 and the two support walls 1 define three side surfaces of the receiving space, respectively, and the opening of the receiving space faces the side surfaces. Preferably, the distance between the first plane P1 and the second plane P2 (this distance is shown by X7 in fig. 1) satisfies: 156mm ≦ X7 ≦ 220mm, for example, X7 ≦ 210 mm. Preferably, the first set of support bars 21 are aligned with the second set of support bars 22 one by one in a direction parallel to the third plane P3 (e.g., the second direction D2 shown in fig. 2).

It can be understood that when the solar cell piece in the manufacturing process is placed in the accommodating space of the flower basket device, the first group of support rods 21 can apply a supporting force to the lower side edge of the solar cell piece; the second group of support rods 22 apply support force to the upper side edge of the solar cell; the third set of support bars 23 provides support force to the side edges of the solar cell sheet. Because every group's bracing piece 2 is three, therefore solar wafer can all have three stress point at each side reason, therefore can the atress even, avoid local stress concentration, also avoid taking place to beat.

Preferably, part of the support bar 2 may be configured to be adjustable, so that the flower basket device is further formed as an adjustable flower basket device. In particular, each set of support bars 2 is divided into two fixed support bars, fixed with respect to the support wall 1, and an adjustable support bar, adjustable with respect to the support wall 1 so that it can be adjusted manually or automatically to a coplanar condition with the fixed support bars. The adjustable support bar may have an adjustable range of 20 filaments (100 filaments to 1mm), for example.

Taking the first set of support rods 21 in fig. 2 as an example, the left support rod 211 and the right support rod 213 may be fixed support rods, and the middle support rod 212 may be an adjustable support rod. After the solar cell enters the accommodating space, the left support rod 211 and the right support rod 213 firstly provide two upward support forces for the bottom edge of the solar cell, and then the middle support rod 212 is manually or automatically adjusted to fully contact the bottom edge of the solar cell, so that each of the first set of support rods 21 provides full support for the solar cell.

The arrangement can ensure that each group of supporting rods can be accurately positioned in the same plane, and the situation that part of the supporting rods cannot actually contact the solar cell is avoided.

Each set of support rods 2 may have some preferred arrangement which is common in this embodiment. The sets of support bars 2 are arranged uniformly in the plane defined by them. For example, for each set of the support bars 2, the distance between any two adjacent support bars 2 is the same, and the distance X3 between the two support bars 2 which are farthest apart satisfies the following condition: 125mm ≦ X3 ≦ 135mm, e.g., X3 ≦ 130 mm; the length of each support bar 2 may be 540mm-700mm, and the distance between any two adjacent tooth structures on each support bar 2 is equal, and the distance X5 between the two tooth structures which are farthest away satisfies the following condition: 476mm ≦ X5 ≦ 630mm, for example X5 ≦ 630 mm.

Various preferred choices are possible for the parameters of the two supporting walls 1 as well. For example, with reference to fig. 2, the maximum dimension X2 (which may be understood as the height of the flower basket device) of the supporting wall 1 in the direction perpendicular to the first plane P1 satisfies: 265mm < X2 < 275mm, for example X2 < 270 mm; the maximum dimension X1 (which may be understood as the width of the flower basket device) of the support wall 1 in the direction perpendicular to the third plane P3 satisfies: 265mm < X1 < 275mm, for example X3 < 270 mm; with reference to fig. 1, the thickness X4 of the support wall 1 satisfies: 14mm ≦ X4 ≦ 18mm, e.g., X4 ≦ 16 mm; the distance X6 between the surfaces of the two support walls 1 facing away from each other (this value is understood to be the length of the flower basket device) satisfies: 550mm ≦ X6 ≦ 710mm, for example, X6 ≦ 710 mm. It is also preferred that the edge of the support wall 1 is provided with several recesses 3 for engaging other means used in cooperation with the flower basket device, e.g. for engaging a transport device or the like.

More preferably, referring to fig. 2, the flower basket device further comprises a holding rod 4 detachably connected between the two support walls 1, and the holding rod 4 does not contact the solar cell and only serves to prevent the solar cell from sliding out of the opening. Preferably, the support wall 1 can be provided with corresponding recesses 3 for carrying the retaining bars 4. In use, the holding rod 4 can be removed from between the two support walls 1, the solar cell sheet can be placed into the accommodating space through the opening, and then the holding rod 4 can be reinstalled between the two support walls 1.

It will of course be appreciated that whilst in the present embodiment preferred parameter settings for the support wall 1 and the support wall 1 are given for each, in practice the dimensioning of the support bar 2 and the support wall 1 should be considered in its entirety, with the support bar 2 and the support wall 1 being dimensioned in their entirety so that the support bar 2 and the support wall 1 can be fitted correctly.

According to the utility model discloses, a set of bracing piece that is located a plane of basket of flowers device is more than three, can provide even holding power and abundant restraint to solar wafer when bearing solar wafer like this to avoid because support and the restraint to solar wafer are too few and a series of problems that produce.

Specifically, the utility model discloses a basket of flowers device on the one hand can provide even holding power, messenger's solar wafer to it when bearing solar wafer each bracing piece, makes solar wafer have more stress point, avoids local stress concentration like this, alleviates solar wafer's fatigue damage, the deflection of having clamped down solar wafer, makes solar wafer's flagging scope obtain control, avoided solar wafer to get into the belt transmission in advance.

On the other hand, the utility model discloses a basket of flowers device increase is to solar wafer's restraint. Therefore, edge breakage and corner breakage caused by jumping of the solar cell when the manipulator lifts the flower basket device from the liquid are reduced. And because the utility model discloses increased the quantity of bracing piece, the interval between each bracing piece has become littleer, has guaranteed that two base angles of solar wafer can not strike peripherally when slight removal. The foregoing description of various embodiments of the invention is provided to one of ordinary skill in the relevant art for the purpose of illustration. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. As noted above, various alternatives and modifications of the present invention will be apparent to those skilled in the art of the above teachings. Thus, while some alternative embodiments are specifically described, other embodiments will be apparent to, or relatively easily developed by, those of ordinary skill in the art. The present invention is intended to embrace all such alternatives, modifications and variances of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention as described above.

Description of reference numerals:

supporting wall 1

Support bar 2

First set of support rods 21

Second set of support rods 22

Third group of support bars 23

Left support bar 211

Middle support rod 212

Right support rod 213

Recess 3

Retaining rod 4

Solar cell 5

First plane P1

Second plane P2

Third plane P3

First direction D1

Second direction D2

Third direction D3

Claims (12)

1. A basket of flowers device for bearing a plurality of solar cells of size more than 210mm in the processing procedure, characterized in that, the basket of flowers device includes:

two support walls (1) parallel to each other and facing each other;

the two ends of each supporting rod are respectively connected with the two supporting walls, each supporting rod is perpendicular to the supporting walls, the supporting rods are divided into three groups, the axes of all the supporting rods in each group are located in the same virtual plane, the three virtual planes corresponding to the three groups can form a cuboid containing space with an opening on one side together with the two supporting walls, each supporting rod is provided with a plurality of tooth structures protruding towards the containing space, and the tooth distance of each tooth structure is 6.3 +/-0.02 mm,

wherein a plurality of the solar cell pieces can respectively enter the accommodating space through the openings and are supported by the support rods, and the solar cell pieces are separated from each other by the tooth structures.

2. The flower basket device according to claim 1, wherein the virtual plane corresponding to the first set of support rods (21) is a first plane (P1), the virtual plane corresponding to the second set of support rods (22) is a second plane (P2), and the virtual plane corresponding to the third set of support rods (23) is a third plane (P3), wherein the first plane and the second plane are parallel and perpendicular to the third plane, and wherein the first set of support rods and the second set of support rods are aligned one-to-one in a direction parallel to the third plane.

3. The device according to claim 2, wherein the device is oriented such that the second plane is above the first plane, the opening facing sideways.

4. The flower basket device according to claim 1, wherein the distance between any adjacent two of the support rods is the same for each set of the support rods.

5. The flower basket device according to claim 1, wherein for each set of the support bars, the distance (X3) between the two support bars that are most distant is 125mm-135 mm.

6. The flower basket device according to claim 1, wherein the length of the supporting rod is 540mm-700 mm.

7. The flower basket device according to claim 1, wherein the distance (X5) between the two tooth structures farthest from each other for any one of the support rods is 476-630 mm.

8. The flower basket device according to claim 2, wherein the distance (X7) between the first plane and the second plane is 156mm-220 mm.

9. The flower basket device according to claim 2,

a maximum dimension (X2) of the support wall in a direction perpendicular to the first plane is 265mm-275 mm;

a maximum dimension (X1) of the support wall in a direction perpendicular to the third plane is 265mm-275 mm;

the wall thickness (X4) of the supporting wall is 14mm-18 mm;

the distance (X6) between the surfaces of the two support walls facing away from each other is 550mm-710 mm.

10. The device according to claim 1, characterized in that the edge of the support wall is provided with a recess for engaging other means used in cooperation with the device.

11. The basket device according to claim 1, further comprising a retaining rod (4) detachably connected between the two support walls, the retaining rod being positioned at the opening for blocking the solar cell sheet at the opening after the solar cell sheet enters the receiving space, and there being a spacing between the solar cell sheet and the retaining rod when the solar cell sheet is carried in the basket device.

12. The device as claimed in any one of claims 1 to 11, wherein the device is an adjustable device, wherein each set of the support rods is at least three and each set of the support rods is divided into a fixed support rod and an adjustable support rod, for each set of the support rods, the fixed support rods are two and fixed relative to the support wall, and the adjustable support rods are adjustable relative to the support wall so as to be manually or automatically adjustable to a coplanar state with the fixed support rods.

Images