CN218065852U

CN218065852U - Drying and conveying device and workpiece drying system

Info

Publication number: CN218065852U
Application number: CN202221764916.0U
Authority: CN
Inventors: 谈仕祥
Original assignee: Tongwei Solar Chengdu Co Ltd
Current assignee: Tongwei Solar Chengdu Co Ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-12-16
Anticipated expiration: 2032-07-08

Abstract

The application provides a stoving conveyer and work piece drying system relates to the solar cell preparation field. The drying and conveying device comprises: transport mechanism, stoving mechanism, feed mechanism and shedding mechanism. The conveying mechanism is used for conveying the workpiece from the feeding end to the discharging end, and is provided with a plurality of bearing surfaces which are arranged at intervals along the conveying direction and used for bearing the workpiece; the drying mechanism is positioned above the conveying mechanism, extends along the conveying direction and is positioned between the feeding end and the discharging end, and the drying mechanism is used for conveying heat to the bearing surface; the feeding mechanism is used for feeding the workpiece to a bearing surface at the feeding end; the unloading mechanism is used for unloading the workpiece on the loading surface at the unloading end. The drying and conveying device can be suitable for the electroplating process of HIT, and the problems that the edge glue layers of the battery pieces are damaged and the drying difference of each battery piece is large can be solved.

Description

Drying and conveying device and workpiece drying system

Technical Field

The application relates to the field of solar cell preparation, in particular to a drying and conveying device and a workpiece drying system.

Background

The first process segment of the existing HIT electroplating grid line is to encapsulate a mask material, namely encapsulating the mask material to the edge of a battery piece to form an adhesive layer, wherein the mask material has an insulation effect in the electroplating process, so that short circuit caused by electroplating of metals such as copper, tin and the like to the battery piece in the electroplating process is avoided.

After the encapsulation process is finished, the mask material on the battery piece, namely the adhesive layer to be dried, needs to be dried; the traditional battery piece drying and conveying mechanisms are generally divided into edge contact thimble type and surface-to-surface contact grid cloth belt type, and the two drying and conveying mechanisms can not apply the electroplating process of HIT. The electroplating process of the HIT needs to glue the side vertical face of the cell, usually, the glue is adhered to the hardware mechanism due to the fact that the glue part contacts the hardware mechanism, the glue is taken away by the glue to expose the substrate of the cell, the glue layer is damaged, and the electric leakage failure of the finished cell is caused. Therefore current stoving generally adopts the basket of flowers to bear, but the battery piece that cup stacked in the basket of flowers is more, and the stoving effect is not good to the basket of flowers is regional to be transmitted and needs to be removed in the thermal field, influences the flow of wind field after the inside basket of flowers quantity of thermal field increases, influences the stoving effect of each battery piece, and the stoving difference of each battery piece is big.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a stoving conveyer and work piece drying system, it not only can be applicable to HIT's electroplating process, and can improve the big technical problem of the stoving difference of each battery piece that the battery piece marginal glue film that the transmission device that dries of the battery piece of system leads to is impaired and basket of flowers stoving leads to.

In a first aspect, an embodiment of the present application provides a drying and conveying device, which includes: transport mechanism, stoving mechanism, feed mechanism and shedding mechanism.

The conveying mechanism is used for conveying the workpiece from the feeding end to the discharging end, and is provided with a plurality of bearing surfaces which are arranged at intervals along the conveying direction and used for bearing the workpiece; the drying mechanism is positioned above the conveying mechanism, extends along the conveying direction and is positioned between the feeding end and the discharging end, and the drying mechanism is used for conveying heat to the bearing surface; the feeding mechanism is used for feeding the workpiece to a bearing surface positioned at the feeding end; the unloading mechanism is used for unloading the workpiece on the loading surface at the unloading end.

In the implementation process, when the drying and conveying device is applied to the electroplating grid line technical route of the photovoltaic cell HIT process, a workpiece to be dried (namely a cell with a glue layer to be dried on the surface, hereinafter referred to as a cell) is conveyed to the bearing surface by the feeding mechanism, the feeding end and the discharging end of the bearing surface move linearly so that the drying mechanism dries the cell, and after the cell is dried, the discharging mechanism takes the cell down from the bearing surface at the discharging end, so that automatic drying is realized, and the drying efficiency is high. Among the above-mentioned stoving conveyer, every battery piece is independently dried, need not to pile up, consequently can make the battery piece thermally equivalent in transmission process, and the stoving proportion difference between the battery piece is little to adopt non-contact's conveying stoving mode, the in-process contactless hardware mechanism of the glue film of treating on the messenger battery piece at whole stoving makes the glue film of treating to dry not receive the damage, thereby improves the integrality of glue film, avoids the electric leakage inefficacy of finished product battery piece.

In a possible embodiment, the bearing surface is a horizontally arranged plane.

In the implementation process, the contact area between the workpiece and the bearing surface can be increased by arranging the plane, and the stability of the workpiece in the conveying process is improved.

In one possible embodiment, the roughness of the bearing surface is Ra 25-Ra 50.

In the implementation process, the roughness of the bearing surface is utilized to increase the friction force between the workpiece and the bearing surface and improve the stability of the workpiece in the conveying process.

In one possible embodiment, the roughness of the bearing surface is Ra 25 or Ra 50.

In the implementation process, the arrangement is convenient, the arrangement of the roughness is utilized, the friction force between the workpiece and the bearing surface can be increased, and the stability of the workpiece in the conveying process is improved.

In one possible embodiment, the bearing surface is made of polytetrafluoroethylene.

In the implementation process, the polytetrafluoroethylene has excellent chemical stability, corrosion resistance and heat resistance, can effectively prolong the service life of the bearing surface, has low heat conductivity coefficient and poor heat conductivity, and can avoid the heat from the bearing surface to be conducted to the workpiece to damage the workpiece.

In a second aspect, an embodiment of the present application provides a workpiece drying system, which includes:

the utility model provides a stoving conveyer and work piece that this application first aspect provided, wherein the work piece has the middle part and encloses the edge part of locating the middle part, and the middle part is used for cooperating with the loading face, and the edge part is used for stretching out the loading face, and the edge part is equipped with treats the stoving glue film.

In the implementation process, when the drying and conveying device is applied to the electroplating grid line technical route of the HIT process of the photovoltaic cell, the workpiece can be a cell with a to-be-dried glue layer at the edge part, the drying and conveying device can uniformly heat and dry the cell in the transmission process, the difference of the drying proportion between the cells is small, the to-be-dried glue layer does not contact with a hardware mechanism in the whole drying process, the to-be-dried glue layer on the cell is not damaged, the integrity of the glue layer is improved, and the electric leakage failure of the finished cell is avoided.

In a possible embodiment, the edge portion has an inner edge close to the central portion and an outer edge facing away from the central portion, the distance between the inner edge and the outer edge being ≧ 1cm.

In the implementation process, the distance between the inner edge and the outer edge is more than or equal to 1cm, that is, the width of the edge part is more than or equal to 1cm, and at this time, the width of the to-be-dried glue layer arranged on the edge part should be less than or equal to the width of the edge part.

In a possible embodiment, the feeding mechanism is provided with a feeding sucker matched with the workpiece, and the size of the feeding sucker does not exceed that of the middle part, so that the edge part can be suspended outside the feeding sucker.

In the above-mentioned realization process, the size that utilizes the material loading sucking disc is no longer than the size at middle part to make the edge part can be unsettled outside the material loading sucking disc, damage when avoiding the material loading sucking disc material loading sets up in the edge part treat the stoving glue film, thereby improve the integrality of treating the stoving glue film, avoid the electric leakage inefficacy of finished product battery piece.

In a possible embodiment, the unloading mechanism is provided with an unloading sucker matched with the workpiece, and the size of the unloading sucker does not exceed that of the middle part, so that the edge part can be suspended outside the unloading sucker.

In the above-mentioned realization process, the size that utilizes the sucking disc of unloading is no longer than the size at middle part to make the edge part can be unsettled outside the sucking disc of unloading, damage when avoiding the sucking disc of unloading to set up in the edge part treat the stoving glue film, thereby improve the integrality of treating the stoving glue film, avoid the electric leakage inefficacy of finished product battery piece.

In one possible embodiment, the workpiece is a battery piece.

In the above-mentioned realization process, above-mentioned stoving conveyer not only can make the battery piece in transmission process thermally equivalent stoving, and the stoving proportion difference between the battery piece is little, and the in-process of whole stoving treats the stoving glue film contactless hardware mechanism moreover for the glue film of treating on the battery piece of drying does not receive the damage, thereby improves the integrality of glue film, avoids the electric leakage inefficacy of finished product battery piece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a workpiece drying system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a workpiece according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an assembly of a load-bearing surface and a workpiece provided in accordance with an embodiment of the present application;

fig. 4 is a schematic assembly diagram of a feeding suction cup and a workpiece provided in an embodiment of the present application.

Icon: 10-a workpiece drying system; 110-a transport mechanism; 111-a feeding end; 112-a discharge end; 113-a conveyor belt; 114-a driving wheel; 115-driven wheel; 116-a drive mechanism; 117-a carrier table; 118-a bearing surface; 120-a drying mechanism; 130-a feeding mechanism; 131-feeding sucker; 140-a discharge mechanism; 141-a discharge sucker; 200-a workpiece; 210-middle part; 220-edge portion; 221-drying the adhesive layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the application is conventionally placed in use, and are used only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1, a workpiece drying system 10 includes a drying conveyor and a workpiece 200.

The workpiece 200 may be not only in a block shape but also in a sheet shape, and in the following embodiments, the workpiece 200 is specifically described as an example of a battery sheet.

Referring to fig. 1, the drying and conveying apparatus includes: a conveying mechanism 110, a drying mechanism 120, a loading mechanism 130, and a discharging mechanism 140.

The conveying mechanism 110 is used for conveying the workpiece 200 from the loading end 111 to the unloading end 112, the conveying mechanism 110 is provided with a plurality of bearing surfaces 118 arranged at intervals along the conveying direction, and the bearing surfaces 118 are used for bearing the workpiece 200; the drying mechanism 120 is located above the conveying mechanism 110, the drying mechanism 120 extends along the conveying direction and is located between the loading end 111 and the unloading end 112, and the drying mechanism 120 is configured to deliver heat to the carrying surface 118; the loading mechanism 130 is used for loading the workpiece 200 onto the loading surface 118 at the loading end 111; the discharge mechanism 140 is used to discharge the work-pieces 200 on the load-bearing surface 118 at the discharge end.

In the implementation process, the loading mechanism 130 carries the workpiece 200 to be dried (i.e., the battery piece with the adhesive layer 221 to be dried on the surface) to the carrying surface 118, the loading end 111 and the unloading end 112 of the carrying surface 118 move linearly, so that the drying mechanism 120 dries the battery piece, after the battery piece is dried, the unloading mechanism 140 takes the battery piece off from the carrying surface 118 at the unloading end, so as to implement automatic drying, and the drying efficiency is high.

Furthermore, in the drying and conveying device, each battery piece is independently dried without being stacked, so that the battery pieces are uniformly heated in the transmission process, the drying proportion difference between the battery pieces is small, and a non-contact type conveying and drying mode is adopted, so that the to-be-dried adhesive layer 221 on each battery piece is not in contact with a hardware mechanism in the whole drying process, the to-be-dried adhesive layer 221 is not damaged, the integrity of the adhesive layer is improved, and the electric leakage failure of the finished battery pieces is avoided.

The transfer mechanism 110 includes a transfer belt 113, a drive pulley 114, a driven pulley 115, and a drive mechanism 116.

The driving mechanism 116 is in transmission connection with the driving wheel 114 to drive the driving wheel 114 to rotate, and the driving mechanism 116 is, for example, a motor, and the motor is coaxially connected with the driving wheel 114.

The transmission belt 113 is sleeved on the driving wheel 114 and the driven wheel 115, so that the driving wheel 114 and the driven wheel 115 realize belt transmission by the transmission belt 113, and the driving wheel 114 drives the driven wheel 115 to synchronously rotate in the same direction. The conveyor belt 113 is a high temperature resistant chain or a high temperature resistant belt body.

The conveyor belt 113 is provided with a plurality of spaced-apart carrier tables 117 in the conveying direction, the end face of each conveyor table facing away from the conveying end being a bearing face 118.

The bearing surface 118 may be a curved surface or a flat surface.

To improve the stability of the workpiece 200 supported on the support surface 118, the support surface 118 is optionally a horizontally disposed plane.

To further enhance the stability of the workpiece 200 supported on the bearing surface 118, the bearing surface 118 may be roughened to enhance the friction between the bearing surface 118 and the workpiece 200.

Optionally, the bearing surface 118 has a roughness of Ra 25-Ra 50. The roughness is reasonable, so that the friction force between the workpiece 200 and the bearing surface 118 can be increased, the stability of the workpiece 200 in the conveying process is improved, and the surface of the workpiece 200 is prevented from being damaged due to overlarge roughness.

Optionally, the roughness of the bearing surface 118 is Ra 25 or Ra 50. The roughness is convenient to set, and the setting of the roughness can increase the friction force between the workpiece 200 and the bearing surface 118, so that the stability of the workpiece 200 in the conveying process is improved.

In the transportation process, the drying mechanism 120 transports heat toward the carrying surface 118, so the carrying surface 118 is made of a heat-resistant material, which can effectively prolong the service life of the carrying surface 118, and in order to prevent heat from the carrying surface 118 to the battery to damage the battery, the carrying surface 118 should be made of a material with a low thermal conductivity and a poor thermal conductivity.

Optionally, the bearing surface 118 is made of teflon.

The polytetrafluoroethylene is convenient to obtain and process, has excellent chemical stability, corrosion resistance and heat resistance, can effectively prolong the service life of the bearing surface 118, has low heat conductivity coefficient and poor heat conductivity, and can prevent heat from being conducted from the bearing surface 118 to the battery piece to damage the battery piece.

Drying mechanism 120 includes, but is not limited to, a fan.

Optionally, drying mechanism 120 is a drying oven having a drying chamber and a heating mechanism located within the drying chamber, the heating mechanism being used to heat the chamber, such as heating wires or the like, when transfer mechanism 110 extends through the chamber and along the axis of the chamber, and loading end 111 and unloading end 112 are located outside the drying oven, respectively.

The loading mechanism 130 and the unloading mechanism 140 may be mechanical arms, respectively, and are not limited herein.

Referring to fig. 1, 2 and 3, the workpiece 200 has a middle portion 210 and an edge portion 220 surrounding the middle portion 210, the middle portion 210 is configured to cooperate with the supporting surface 118, the edge portion 220 is configured to extend out of the supporting surface 118, and the edge portion 220 is provided with a to-be-dried adhesive layer 221.

Therefore, the drying and conveying device can be used for uniformly heating and drying the workpiece 200 in the transmission process, and the whole drying process is not contacted with a hardware mechanism, so that the to-be-dried adhesive layer 221 on the edge part 220 of the workpiece 200 is not damaged, the integrity of the adhesive layer is improved, and the electric leakage failure of the finished battery piece is avoided.

The rim portion 220 has an inner edge near the central portion 210 and an outer edge facing away from the central portion 210, the distance between the inner and outer edges being greater than or equal to 1cm. The distance between the inner edge and the outer edge is larger than or equal to 1cm, namely the width of the edge part 220 is larger than or equal to 1cm, at this time, the width of the to-be-dried glue layer 221 arranged on the edge part 220 should be smaller than or equal to the width of the edge part 220, and the arrangement meets the glue coating requirement of the battery piece.

Referring to fig. 1 and 4, the feeding mechanism 130 has a feeding suction cup 131 matched with the workpiece 200, and the size of the feeding suction cup 131 does not exceed the size of the middle portion 210, so that the edge portion 220 can be suspended outside the feeding suction cup 131, and the adhesive layer 221 to be dried arranged on the edge portion 220 is prevented from being damaged when the feeding suction cup 131 feeds, thereby improving the integrity of the adhesive layer 221 to be dried and preventing the electric leakage failure of the finished battery piece.

Referring to fig. 1, the unloading mechanism 140 has an unloading suction cup 141 cooperating with the workpiece 200, and the size of the unloading suction cup 141 does not exceed the size of the middle portion 210, so that the edge portion 220 can be suspended outside the unloading suction cup 141. The damage to the to-be-dried adhesive layer 221 arranged at the edge part 220 is avoided when the discharging sucker 141 discharges, so that the integrity of the to-be-dried adhesive layer 221 is improved, and the leakage failure of the finished battery piece is avoided.

It should be noted that the loading suction cup 131 and the unloading suction cup 141 both adopt a vacuum adsorption manner to adsorb the battery piece as the workpiece 200, that is, the loading suction cup 131 and the unloading suction cup 141 both have vacuum adsorption holes, and the specific arrangement thereof may refer to the related art, which is not limited herein.

The shapes of the feeding sucker 131 and the discharging sucker 141 can be circular, rectangular or hollow frame, and are not limited herein, and those skilled in the art can select the shape according to actual requirements.

In conclusion, when the drying and conveying device provided by the application is applied to the electroplating grid line technical route of the photovoltaic cell HIT process, the workpiece is a cell with a to-be-dried glue layer at the edge part, the drying and conveying device can uniformly heat and dry the cell in the transmission process, the drying proportion difference between the cells is small, the to-be-dried glue layer does not contact with a hardware mechanism in the whole drying process, the to-be-dried glue layer on the cell is not damaged, the integrity of the glue layer is improved, and the electric leakage failure of the finished cell is avoided.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drying conveyor, comprising:

the conveying mechanism is used for conveying the workpiece from the feeding end to the discharging end and is provided with a plurality of bearing surfaces which are arranged at intervals along the conveying direction and used for bearing the workpiece;

the drying mechanism is positioned above the conveying mechanism, extends along the conveying direction and is positioned between the feeding end and the discharging end, and the drying mechanism is used for conveying heat to the bearing surface;

the feeding mechanism is used for feeding the workpiece to the bearing surface at the feeding end; and

and the discharging mechanism is used for discharging the workpiece on the bearing surface of the discharging end.

2. The drying conveyor of claim 1, wherein the carrying surface is a horizontally disposed plane.

3. The drying conveyor of claim 1, wherein the roughness of the carrying surface is Ra 25-Ra 50.

4. The drying conveyor of claim 1, wherein the roughness of the bearing surface is Ra 25 or Ra 50.

5. The drying conveyor of claim 1, wherein the carrying surface is made of teflon.

6. A workpiece drying system, comprising:

the drying conveyor of any one of claims 1-5, and

the workpiece is provided with a middle part and an edge part which is arranged around the middle part, the middle part is used for being matched with the bearing surface, the edge part is used for extending out of the bearing surface, and the edge part is provided with a glue layer to be dried.

7. The workpiece drying system of claim 6, wherein the edge portion has an inner edge proximate the central portion and an outer edge distal from the central portion, the distance between the inner edge and the outer edge being greater than or equal to 1cm.

8. The workpiece drying system of claim 6, wherein the feeding mechanism has a feeding suction cup engaged with the workpiece, the feeding suction cup having a size not exceeding a size of the middle portion, such that the edge portion is capable of being suspended outside the feeding suction cup.

9. The workpiece drying system of claim 6, wherein the discharge mechanism has a discharge suction cup that engages the workpiece, the discharge suction cup having a size that does not exceed a size of the middle portion, such that the edge portion can be suspended outside the discharge suction cup.

10. The workpiece drying system of any one of claims 6-9, wherein the workpiece is a battery piece.