1. The utility model provides a crystal silicon battery etching drying groove with supplementary stoving, its characterized in that, including cell body (1), cell body (1) bottom is provided with the fan, the fan top is provided with base (2), install a plurality of blow-by trachea (6) on base (2), a plurality of gas pockets (9) have been seted up on blow-by trachea (6), blow-by trachea (6) and air supply intercommunication.

2. The crystalline silicon battery texturing and drying groove with auxiliary drying function according to claim 1, characterized in that a blowing and cleaning air pipe (6) is arranged on the side wall of the groove body (1), and a plurality of air holes (9) are formed in the blowing and cleaning air pipe (6).

3. A crystalline silicon battery texturing and drying groove with auxiliary drying according to claim 2, characterized in that the axis of the blowing air pipe (6) is parallel to the length direction of the carrying flower basket.

4. A crystalline silicon battery texturing and drying groove with auxiliary drying function according to claim 1, characterized in that the aperture of the air holes (9) is based on that the air flow blown out from the open holes forms a complete air curtain at the clamping groove position of the bottom rod of the flower basket.

5. A crystalline silicon battery texturing and drying groove with auxiliary drying according to claim 1, characterized in that the diameter of the blowing air pipe (6) is 15mm-20 mm.

6. A crystalline silicon battery texturing and drying groove with auxiliary drying according to claim 1, characterized in that the air holes (9) on the blowing air pipe (6) are arranged in two rows along the length direction.

7. A crystalline silicon battery texturing drying groove with auxiliary drying according to claim 1, characterized in that the purge gas pipe (6) is made of polyvinylidene fluoride.

8. A crystalline silicon battery etching and drying method based on the drying tank of claim 1, characterized by comprising the following steps:

step 1, placing a flower basket 3 bearing silicon wafers on a base (2) at the lower part of a drying groove;

step 2, opening an air source and an air pump turbofan, enabling air to enter a purge air pipe (6), and blowing out the air through an air hole (9) to purge a clamping groove of the bearing flower basket; and simultaneously heating and drying the silicon wafer.

Background

At present, in the preparation of a crystalline silicon battery, in order to improve the utilization rate of incident light, the surface of the battery is usually treated by a method of increasing the texture. The manufacturing link of the suede is called as a suede making process, and the wet method groove type suede making technology is generally adopted in the industry at present, has the advantages of high productivity, low cost and good suede consistency, but has certain defects, wherein the poor drying effect is one of the defects.

The drying design of the groove type machine is that HF is used in the last liquid medicine groove to react an oxide layer on the surface of the silicon wafer, the silicon wafer is in a bare silicon state, and the surface of the silicon wafer is hydrophobic due to the hydrophobic characteristic of silicon. And the surface of the used bearing flower basket is sprayed with nano fluorine, and the bearing flower basket has hydrophobic property.

Bear basket of flowers and silicon chip and can place at a slow speed in drawing the groove afterwards, draw the higher pure water of temperature to use inside the groove slowly, wait to bear basket of flowers and silicon chip and soak the back slowly and dewater completely, the silicon chip with bear the hydrophobicity of basket of flowers, the mutual adsorptivity of the higher pure water of temperature can make the silicon chip and bear the weight of the moisture on basket of flowers surface and reduce by a wide margin. The silicon chip and the bearing flower basket which greatly reduce the moisture are placed in a drying groove, and the hot air is used for continuously blowing for a long time to blow off the residual moisture on the surface.

However, the silicon wafer is in close contact with the clamping grooves of the flower basket, after the silicon wafer bearing the flower basket is inserted into the clamping grooves due to the narrow space of the clamping grooves, the silicon wafer and the clamping grooves on the two sides can be adsorbed by water, and the bearing flower basket with the silicon wafer arranged in the groove body is blown, blown and dried by the turbofan arranged at the bottom of the groove body. Because the angle is small, the blowing effect of hot air on the clamping groove is limited, and the risk that the silicon wafer cannot be thoroughly dried exists. When the silicon wafer which is not dried enters the next working procedure, the silicon wafers around can be polluted completely, and after the silicon wafers are changed into finished batteries, the conversion efficiency of the batteries is seriously influenced. During normal production, such contaminated batteries are often not sold as normal batteries, and are typically treated as degraded, such that the contaminated batteries also affect the overall quality of the product.

Secondly, when the silicon wafer which is not dried enters the next working procedure, the tool and the machine table can be directly polluted. Receive contaminated frock and board, can continuously pollute the silicon chip of constantly producing, and then lead to bad battery to continuously produce, have the influence of continuation to the conversion efficiency and the rate of certified products of producing the product, also have certain destruction to the stability of producing the line, produce the line technical staff and need spend a large amount of efforts and investigate the processing, also need a large amount of maintenances among the process of eliminating the pollution, influence and produce line productivity and cost.

Disclosure of Invention

The invention provides a crystalline silicon battery texturing drying groove with auxiliary drying and a drying method, and effectively improves the drying effect of groove type texturing.

In order to achieve the purpose, the texturing and drying groove with the auxiliary drying function for the crystalline silicon battery comprises a groove body, wherein a fan is arranged at the bottom of the groove body, a base is arranged above the fan, a plurality of blowing and cleaning air pipes are arranged on the base, a plurality of air holes are formed in the blowing and cleaning air pipes, and the blowing and cleaning air pipes are communicated with an air source.

Further, a blowing and sweeping air pipe is arranged on the side wall of the tank body, and a plurality of air holes are formed in the blowing and sweeping air pipe.

Further, the axis of the blowing air pipe is parallel to the length direction of the bearing flower basket.

Furthermore, the aperture of the air hole is based on that the air flow blown out from the open hole forms a complete air curtain at the clamping groove position of the bottom rod of the bearing flower basket.

Furthermore, the diameter of the purge gas pipe is 15mm-20 mm.

Further, the air holes on the purge gas pipe are arranged in two rows along the length direction of the purge gas pipe.

Furthermore, the purge gas pipe is made of polyvinylidene fluoride.

The crystalline silicon battery texturing and drying method based on the drying groove comprises the following steps:

step 1, placing a flower basket bearing silicon chips on a base at the lower part of a drying groove;

step 2, opening an air source and an air pump turbofan, enabling air to enter a purge air pipe and be blown out through air holes, and purging the clamping groove of the bearing flower basket; and simultaneously heating and drying the silicon wafer.

Compared with the prior art, the invention has at least the following beneficial technical effects:

install the purge gas pipe additional on the inside of stoving groove cell body, the direction that the purge gas pipe aimed at the stoving groove stuck point is opened the gas pocket, and the stoving groove during operation, the air current in the air pipe is to bearing the key blowing of the draw-in groove position of basket of flowers, carries out key stoving to basket draw-in groove position, improves the stoving effect of silicon chip. The method is helpful for improving the conversion efficiency and the rate of certified products of the crystalline silicon battery and the stability of a production line.

Further, be provided with the purge gas pipe on the lateral wall of cell body, a plurality of gas pockets have been seted up on the purge gas, sweep the draw-in groove that bears on the side bracing piece of basket of flowers, improve the stoving effect.

Furthermore, the air pipe used for auxiliary drying is made of PVDF material, is high temperature resistant and cannot cause pollution to the silicon wafer.

According to the method, when the well 38473is dried, the blowing air pipe is used for blowing the air flow blind points of the bearing flower basket clamping grooves and the silicon wafer contact points, so that the drying effect of the silicon wafer is improved. The conversion efficiency and the rate of certified products of the crystalline silicon battery are improved, and the stability of a production line is improved.

The drying method of the invention has no conflict with the existing drying mode, and the existing drying system does not need to be dismantled; the air source of the auxiliary purging system directly uses the compressed air source of the machine table, and the air source does not need to be independently installed. The application range is wide, and the method can be applied to most of the existing single crystal texturing machines.

Drawings

FIG. 1 is a schematic structural view of a conventional drying tank;

FIG. 2 is a top view of the carrying flower basket;

FIG. 3 is a front view of a load-bearing flower basket;

FIG. 4 is a left side view of the carrying flower basket;

fig. 5 is a schematic view of a drying groove body provided in embodiment 1 of the present invention;

fig. 6 is a schematic view of a drying groove body provided in embodiment 2 of the present invention;

FIG. 7 is a schematic view of the air pipe at the bottom of the tank body;

fig. 8 is a schematic view of the trachea on both sides of the slot.

In the drawings: 1. the device comprises a tank body, 2, a base, 3, a bearing flower basket, 4, side supporting rods, 5, bottom supporting rods, 6, a blowing air pipe, 8, chip holes, 9 and air holes.

Detailed Description

In order to make the objects and technical solutions of the present invention clearer and easier to understand. The present invention will be described in further detail with reference to the following drawings and examples, wherein the specific examples are provided for illustrative purposes only and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 5, a crystal silicon battery texturing drying groove with supplementary stoving, when the manipulator was placed and is born basket of flowers 3 to the drying groove in, 1 bottom of cell body was placed and is born basket of flowers base 2, guarantees to bear the weight of the relative position of basket of flowers in the drying groove and keeps unchanged (for the manipulator draws and bears the basket of flowers). Turbofan is installed to base 2 below, and fixed being equipped with on the base 2 of cell body assists stoving purge gas pipe, and the purge gas pipe is fixed on the base through fasteners such as bolt and nut installation, easily installation adjustment. The purge gas pipe 6 is communicated with a gas source through a pipeline, and an air pump is arranged between the purge gas pipe 6 and the gas source.

Referring to fig. 2 to 4, the flower basket 3 includes two sets of side supporting rods 4 and two bottom supporting rods 5, wherein the side supporting rods 4 and the two bottom supporting rods 5 are arranged at the bottom, each side supporting rod includes two side supporting rods 4, one end of each side supporting rod 4 and one end of each bottom supporting rod 5 are connected to the first connecting plate, and the other end of each side supporting rod 4 and one end of each bottom supporting rod 5 are connected to the second connecting plate. A plurality of clamping grooves are formed in the side face of each side supporting rod 4 and the upper end of each bottom supporting rod 5, when silicon wafers are placed in the flower basket, the lower end of the same silicon wafer is inserted into the clamping grooves of the bottom supporting rods 5, and the two sides of the same silicon wafer are respectively inserted into the grooves of the four side supporting rods 4.

The diameter of the purge gas pipe is 20mm, and a high-temperature resistant PVDF material is used. The existing drying slot is generally used for placing two bearing flower baskets side by side for drying silicon wafers, a blowing and sweeping air pipe 6 is placed at the bottom of each bearing flower basket, and the blowing and sweeping air pipe 6 is located in the middle position between the supporting rods 5 at the bottom of each bearing flower basket. The blowing air pipe 6 is provided with an air hole 9, the aperture of the air hole 9 is adjusted according to the distance between the air pipe and the clamping groove of the bottom supporting rod of the bearing flower basket and the distance between the open holes, and the air pipe can blow air flow out of the open holes to form a complete air curtain at the clamping groove position of the bottom supporting rod of the bearing flower basket. Because the turbofan is arranged at the bottom of the tank body, the excessive installation air pipes at the tank bottom can hinder the drying effect of the turbine, so that only one blowing air pipe 6 is arranged at each flower basket at the tank bottom, and the blowing air pipes 6 are provided with two exhaust holes and blow to the two support rod clamping grooves at the bottom of the bearing flower basket, as shown in fig. 7.

Example 2

Referring to fig. 6, a crystal silicon battery texturing drying groove with supplementary stoving, including cell body 1, the cell body lower part is provided with base 2, and turbofan is installed to base 2 below, installs two purge pipes 6 on the base 2, has seted up two exhaust holes 9 on the purge pipe 6 of installing on the base, and all purge pipes 6 all pass through the pipeline intercommunication with the air supply, and are provided with the air pump between purge pipe 6 and the air supply.

The side walls of the two sides of the drying trough body 2 are respectively provided with two auxiliary drying and blowing air pipes 6, the blowing air pipes 6 arranged on the left side and the right side are the same in specification with the blowing air pipes 6 arranged at the bottom of the trough body, but the blowing air pipes are only provided with an exhaust hole 9, as shown in figure 8, so that hot air flows are blown to a clamping groove of the supporting rod 4 bearing the flower basket.

No matter the air pipe at the bottom of the tank body or the purge air pipes 6 on the two side walls of the tank body, the air flow supply source can be directly connected to the existing compressed air source of the machine table, and a brand new air source system does not need to be installed again. When the blowing air pipe works, the blowing air pipe and the turbofan work simultaneously and stop simultaneously.

Example 3

A crystalline silicon battery texturing and drying method with auxiliary drying comprises the following steps:

step 1, placing a flower basket 3 bearing silicon wafers on a base 2 at the lower part of a drying groove;

step 2, opening an air source and an air pump turbofan, enabling air to enter a purge air pipe 6 and be blown out through an air hole 9, and purging a clamping groove for bearing the flower basket; and simultaneously heating and drying the silicon wafer.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.