阅读说明：本技术 一种太阳能光伏背板玻璃、及其深加工方法和生产线 (Solar photovoltaic back plate glass, deep processing method and production line thereof ) 是由 彭寿 马立云 郭新龙 廖伟东 陈昕 倪龙珠 高新刚 韩德刚 于 2021-08-25 设计创作，主要内容包括：本发明提供一种太阳能光伏背板玻璃、及其深加工方法和生产线,太阳能光伏背板玻璃用于封装在太阳能电池硅片的正下方,太阳能电池硅片具有多块呈矩阵排布的电池硅片；太阳能光伏背板玻璃包括玻璃本体、以及固设在玻璃本体上表面上的反射层,反射层呈网格状,网格状的反射层具有分布在相邻两块电池硅片之间的空白间隔区正下方的多个网格边部、以及由多个网格边部围成的多个空区,网格边部用于和电池硅片的边缘抵接配合。本申请通过反射层大大增加太阳能电池硅片上的光照量,从而提高太阳能电池组件的光电转换效率,也就提高太阳能电池组件的功率。另外,具有反射层的背板玻璃结构简单,易加工,且成本相对较低。(The invention provides solar photovoltaic backboard glass, a deep processing method and a production line thereof, wherein the solar photovoltaic backboard glass is used for being packaged under a solar cell silicon wafer, and the solar cell silicon wafer is provided with a plurality of cell silicon wafers which are arranged in a matrix; the solar photovoltaic backboard glass comprises a glass body and a reflecting layer fixedly arranged on the upper surface of the glass body, wherein the reflecting layer is latticed, the latticed reflecting layer is provided with a plurality of grid edge parts distributed right below a blank interval area between two adjacent battery silicon wafers and a plurality of empty areas formed by the grid edge parts in a surrounding mode, and the grid edge parts are used for being in butt joint with the edges of the battery silicon wafers. The application greatly increases the illumination quantity on the solar cell silicon wafer through the reflecting layer, thereby improving the photoelectric conversion efficiency of the solar cell module and also improving the power of the solar cell module. In addition, the back plate glass with the reflecting layer is simple in structure, easy to process and relatively low in cost.)

1. The utility model provides a solar photovoltaic backplate glass for encapsulate under solar cell silicon chip (20), solar cell silicon chip (20) have the polylith and be the battery silicon chip that the matrix was arranged, its characterized in that: the solar photovoltaic back plate glass comprises a glass body (11) and a reflecting layer (12) fixedly arranged on the upper surface of the glass body (11), wherein the reflecting layer (12) is latticed, the latticed reflecting layer (12) is provided with a plurality of grid edges (121) distributed right below a blank interval area between two adjacent battery silicon wafers and a plurality of empty areas (122) surrounded by the grid edges (121), and the grid edges (121) are used for being in butt joint with the edges of the battery silicon wafers.

2. The solar photovoltaic backplane glass of claim 1, wherein: the reflection rate of the reflection layer (12) is 80% or more.

3. The solar photovoltaic back sheet glass of claim 1 or 2, wherein: the reflecting layer (12) is a white glaze layer.

4. A deep processing method of solar photovoltaic backboard glass is characterized by comprising the following steps: the method sequentially comprises the following steps:

s1, loading: placing the original glass sheet on a deep processing production line;

s2, pretreating the original glass to obtain a glass body (11);

s3, silk screen printing: coating a reflective coating on the surface of the glass body (11);

s4, curing: drying the reflective coating to form a reflective layer (12) fixed on the surface of the glass body (11) by the reflective coating, so as to obtain a semi-finished product of the backboard glass; the reflective layer (12) is in a grid shape, and the grid-shaped reflective layer (12) is provided with a plurality of grid edges (121) and a plurality of empty areas (122) surrounded by the grid edges (121);

s5, tempering: heating the semi-finished product of the back plate glass to 600-700 ℃, carrying out high-pressure quenching on the semi-finished product of the back plate glass by using wind pressure of 2-4 ten thousand Pa, and then rapidly cooling the semi-finished product of the back plate glass to 150 ℃ within 1-2 s to obtain the solar photovoltaic back plate glass;

and S6, post-treating the solar photovoltaic back plate glass.

5. The deep processing method according to claim 4, characterized in that: the step S2 includes the following sub-steps in sequence:

s21, edging: edging the original glass sheet;

s22, cleaning: cleaning the edge-ground glass sheet and drying water mist on the glass sheet;

s23, corner detection: detecting the edge of the cleaned original glass sheet, and screening unqualified original glass sheets;

s24, waste discharge: discharging unqualified raw glass sheets from a deep processing production line;

s25, punching: processing a plurality of threading holes on the qualified original glass;

s26, cleaning: and cleaning the punched original glass sheet, and drying water mist on the original glass sheet to obtain a glass body (11).

6. The deep processing method according to claim 5, characterized in that: the step S2 further includes the following substeps distributed after the step S26:

s27, storing slices: the glass body (11) is placed in a sheet storage device.

7. The deep processing method according to claim 4, characterized in that: the step S6 includes the following sub-steps in sequence:

s61, cleaning and drying: cleaning the solar photovoltaic back plate glass and drying water mist on the solar photovoltaic back plate glass;

s62, detection before packaging: detecting the solar photovoltaic back plate glass and grading the solar photovoltaic back plate glass;

s63, spreading paper and cutting: and transferring the solar photovoltaic back plate glass to glass stacks of corresponding grades from a deep processing production line according to different grades, and paving paper on the solar photovoltaic back plate glass after stacking one solar photovoltaic back plate glass.

8. The utility model provides a solar photovoltaic backplate glass's deep-processing production line which characterized in that: the deep processing method according to claim 4, wherein the deep processing line comprises a sheet feeding machine for feeding sheets, a pretreatment line for pretreating raw glass sheets, a screen printing machine for screen printing, a drying furnace for curing, a toughening furnace for toughening, and a post-treatment line for post-treating solar photovoltaic back panel glass.

9. The deep processing line of claim 8, wherein: the device comprises a plurality of pretreatment lines, wherein each pretreatment line is provided with a screen printing machine and a drying furnace in the follow-up process, and forms a toughening pretreatment line, and the plurality of toughening pretreatment lines are provided with a toughening furnace in the follow-up process.

10. A further processing line according to claim 8 or 9, characterized in that: the pretreatment line comprises an edge grinding machine, a first cleaning machine, a detection device, a waste discharge device, a punching machine, a second cleaning machine and a sheet storage device which are sequentially arranged along a processing sequence.

Technical Field

The invention belongs to the field of glass production, and particularly relates to solar photovoltaic back plate glass, a deep processing method of the solar photovoltaic back plate glass and a deep processing production line of the solar photovoltaic back plate glass.

Background

Under the background of carbon peak reaching, the demand on photovoltaic is more and more large, and the photovoltaic has larger development space by virtue of lower power generation cost and a flexible installation mode. In order to better adapt to the market, the solar photovoltaic product needs to improve the product quality and the photoelectric conversion efficiency and reduce the production energy consumption. The solar cell module is one of the main finished products of a solar photovoltaic product, can output voltage and generate current under the condition of a loop as long as the illumination of a certain illumination condition is met, and is physically called as solar Photovoltaic (PV).

At present, a solar cell silicon wafer in a solar cell module is packaged between an upper piece of glass and a lower piece of glass when in use, the glass positioned above the solar cell silicon wafer is generally called cover plate glass, and the glass positioned below the solar cell silicon wafer is generally called back plate glass. In the prior art, the cover plate glass and the back plate glass are common glass, and the conversion efficiency of the solar cell module cannot be improved in an auxiliary manner, so that the power of the solar cell module cannot be improved in an auxiliary manner.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a solar photovoltaic back sheet glass which can assist in increasing the power of a solar cell module at low cost.

In order to achieve the purpose, the invention provides solar photovoltaic backboard glass which is used for being packaged under a solar cell silicon wafer, wherein the solar cell silicon wafer is provided with a plurality of cell silicon wafers which are arranged in a matrix; the solar photovoltaic backboard glass comprises a glass body and a reflecting layer fixedly arranged on the upper surface of the glass body, wherein the reflecting layer is latticed, the latticed reflecting layer is provided with a plurality of grid edge parts which are distributed right below a blank interval area between two adjacent battery silicon wafers and a plurality of empty areas which are formed by surrounding of the grid edge parts, and the grid edge parts are used for being in butt joint with the edges of the battery silicon wafers.

Further, the reflectivity of the reflecting layer is greater than or equal to 80%.

Preferably, the reflective layer is a white glaze layer.

The invention also provides a deep processing method of the solar photovoltaic backboard glass, which sequentially comprises the following steps:

s1, loading: placing the original glass sheet on a deep processing production line;

s2, preprocessing the original glass to obtain a glass body;

s3, silk screen printing: coating a reflective coating on the surface of the glass body;

s4, curing: drying the reflective coating to form a reflective layer fixed on the surface of the glass body to obtain a semi-finished product of the backboard glass; the reflection layer is in a grid shape, and the grid-shaped reflection layer is provided with a plurality of grid edges and a plurality of empty areas formed by the surrounding of the grid edges;

s5, tempering: heating the semi-finished product of the back plate glass to 600-700 ℃, carrying out high-pressure quenching on the semi-finished product of the back plate glass by using wind pressure of 2-4 ten thousand Pa, and then rapidly cooling the semi-finished product of the back plate glass to 150 ℃ within 1-2 s to obtain the solar photovoltaic back plate glass;

and S6, post-treating the solar photovoltaic back plate glass.

Further, the step S2 includes the following sub-steps in sequence:

s21, edging: edging the original glass sheet;

s22, cleaning: cleaning the edge-ground glass sheet and drying water mist on the glass sheet;

s23, corner detection: detecting the edge of the cleaned original glass sheet, and screening unqualified original glass sheets;

s24, waste discharge: discharging unqualified raw glass sheets from a deep processing production line;

s25, punching: processing a plurality of threading holes on the qualified original glass;

s26, cleaning: and cleaning the punched original glass sheet, and drying water mist on the original glass sheet to obtain the glass body.

Preferably, the step S2 further includes the following substeps distributed after the step S26:

s27, storing slices: and placing the glass body in a storage device.

Further, the step S6 includes the following sub-steps in sequence:

s61, cleaning and drying: cleaning the solar photovoltaic back plate glass and drying water mist on the solar photovoltaic back plate glass;

s62, detection before packaging: detecting the solar photovoltaic back plate glass and grading the solar photovoltaic back plate glass;

s63, spreading paper and cutting: and transferring the solar photovoltaic back plate glass to glass stacks of corresponding grades from a deep processing production line according to different grades, and paving paper on the solar photovoltaic back plate glass after stacking one solar photovoltaic back plate glass.

The invention further provides a deep processing production line of the solar photovoltaic backboard glass, which is used for carrying out the deep processing method.

Furthermore, the pretreatment lines are provided with a plurality of toughening furnaces, corresponding screen printing machines and drying furnaces are arranged in the follow-up of each pretreatment line to form a toughening pretreatment line, and the toughening furnaces are arranged in the follow-up of the plurality of toughening pretreatment lines.

Further, the pretreatment line comprises an edge grinding machine, a first cleaning machine, a detection device, a waste discharge device, a perforating machine, a second cleaning machine and a sheet storage device which are sequentially arranged along the processing sequence.

As mentioned above, the solar photovoltaic backboard glass, the deep processing method and the production line thereof have the following beneficial effects:

the utility model relates to a backplate glass's upper surface has the reflector layer that is latticed, so, during the sunlight irradiation, partly sunlight that sees through cover plate glass shines solar cell silicon chip, partly sunlight still can shine on backplate glass's reflector layer, then the reflector layer shines this part light reflection on solar cell silicon chip and cover plate glass, cover plate glass shines solar cell silicon chip and backplate glass's reflector layer with the sunlight again on, so can the illumination volume on the solar cell silicon chip of greatly increased, thereby improve solar module's photoelectric conversion efficiency, just also improve solar module's power. The power of the solar cell module is improved by more than 2%. In addition, the back plate glass with the reflecting layer is simple in structure, easy to process and relatively low in cost.

Drawings

Fig. 1 is a schematic structural view of a solar cell module package structure according to the present application, and the view is a front view.

Fig. 2 is a top view of the backplane glass of fig. 1.

Fig. 3 is a flowchart of a deep processing method of solar photovoltaic backplane glass in the present application.

Description of the element reference numerals

10 backboard glass

11 glass body

12 reflective layer

121 grid edge

122 empty zone

20 solar cell silicon wafer

30 cover plate glass

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.

The application provides solar photovoltaic back plate glass, which is called back plate glass 10 for short. As shown in fig. 1, the back glass 10 is used for encapsulating directly below the solar cell silicon wafer 20, and the cover glass 30 encapsulates directly above the solar cell silicon wafer 20. Therefore, the cover glass 30 and the back plate glass 10 are arranged opposite to each other up and down, a packaging region for packaging the solar cell silicon wafer 20 is formed between the cover glass 30 and the back plate glass 10, the lower surface of the cover glass 30 faces the solar cell silicon wafer 20, and the upper surface of the back plate glass 10 faces the solar cell silicon wafer 20. The solar cell silicon wafer 20 is composed of a plurality of cell silicon wafers, and the plurality of cell silicon wafers are arranged in a matrix form, that is, the plurality of cell silicon wafers are orderly arranged in a horizontal plane in a mode of N rows and M columns. The module composed of the back plate glass 10, the cover plate glass 30, and the solar cell silicon wafer 20 is a solar cell module.

In particular, as shown in fig. 1 and 2, the back plate glass 10 according to the present application includes a glass body 11 and a reflective layer 12 fixed on an upper surface of the glass body 11, the reflective layer 12 is in a grid shape, the grid-shaped reflective layer 12 has a plurality of grid edges 121 distributed right below a blank space between two adjacent battery silicon wafers and a plurality of blank areas 122 surrounded by the grid edges 121, the plurality of battery silicon wafers and the plurality of blank areas 122 are vertically corresponding to each other one by one, and the blank areas 122 are slightly smaller than the battery silicon wafers, so that an outer peripheral edge of the battery silicon wafer abuts against the grid edges 121 on the periphery of the blank areas 122 corresponding to the battery silicon wafers.

When the solar cell silicon wafer 20 packaged by the cover plate glass 30 and the back plate glass 10 is used, after sunlight penetrates through the cover plate glass 30, a part of sunlight irradiates on the solar cell silicon wafer 20, and a part of sunlight also irradiates on the latticed reflecting layer 12 on the upper surface of the back plate glass 10, so that the reflecting layer 12 reflects the part of light to irradiate on the solar cell silicon wafer 20 and the cover plate glass 30, and then the cover plate glass 30 irradiates the sunlight on the solar cell silicon wafer 20 and the reflecting layer 12 of the back plate glass 10, so that the sunlight emitted from the back plate glass 10 is reduced, the irradiation amount on the solar cell silicon wafer 20 is greatly increased, the photoelectric conversion efficiency of a solar cell module is correspondingly improved, and the power of the solar cell module is finally improved. The power of the solar cell module is improved by more than 2%. Meanwhile, the back plate glass 10 with the reflecting layer 12 is simple in structure, easy to process and relatively low in cost, so that the conversion efficiency and power of the solar cell module are remarkably improved at low cost. In addition, the peripheral edge of the battery silicon wafer is abutted and matched with the grid edge part 121 of the reflection layer 12, so that the grid edge part 121 avoids the direct contact between the battery silicon wafer and the back plate glass 10, thereby effectively protecting the back plate glass 10 and having double effects.

Further, in the present embodiment, the reflective layer 12 is preferably a white glaze layer, and the reflectance of the reflective layer 12 is 80% or more, that is, the reflective layer 12 is a high-reflectance white glaze layer having a reflectance of more than 80%.

Based on the backplane glass 10 with the structure, the invention also provides a deep processing method for processing the backplane glass 10 with the grid-shaped reflecting layer 12. As shown in fig. 3, the deep processing method of the back plate glass 10 includes the following steps in sequence:

s1, loading: the original glass is placed on a deep processing production line by adopting a loading machine, or a mechanical arm, or a mode of directly connecting with the original glass, and then the subsequent deep processing treatment is carried out. Taking an original sheet of glass with the specification of 2.2m by 1.1m as an example, the feeding beat is 6 sheets per minute.

S2, pretreating the original glass to obtain the glass body 11, wherein the step S2 sequentially comprises the following sub-steps:

s21, edging: and (3) edging the outer edge of the original glass by using an edging machine, firstly grinding one pair of edges, then rotating the original glass by 90 degrees and then grinding the other pair of edges. The edging machine can be the two round edge edging machines of straight line, and it is high-speed edging machine, can realize the production beat of 6 per minute. After the edge grinding of the original glass, the self-explosion rate of the self-explosion in the tempering furnace during the follow-up tempering can be reduced, the production capacity is improved, meanwhile, the abrasion of the original glass to follow-up mechanical equipment on a deep processing production line can be reduced, the injury probability of personnel is reduced, and the production safety is improved.

S22, cleaning: and (3) cleaning the edge-ground glass sheet by using a first cleaning machine, and removing the glass powder after the edge grinding and dirt adhered to the glass sheet. The first cleaning machine adopts a water washing mode to clean the original glass and the air knife is used for drying water mist on the original glass.

S23, corner detection: and detecting the edge of the cleaned original glass sheet by using detection equipment, and screening unqualified original glass sheets. In the embodiment, the detection equipment comprises an image acquisition device and a control system, the image acquisition device shoots the edge image of the original glass at a high speed and transmits the edge image to the control system, and the control system detects the edge grinding quality of the original glass by adopting a big data comparison method and distinguishes qualified original glass and unqualified original glass.

S24, waste discharge: discharging unqualified original glass sheets from the deep processing production line through a waste discharge device, and continuously feeding qualified original glass sheets into a subsequent working section. Therefore, unqualified raw glass can be prevented from entering a subsequent working section, production materials are saved, energy consumption is saved, and production efficiency is improved. In addition, unqualified original glass sheets are automatically discharged by a waste discharge device, so that the labor participation is reduced, and the labor cost is reduced.

S25, punching: and processing a plurality of threading holes on the surface of the qualified original glass by using a punching machine, wherein the threading holes are round holes and are used for threading the circuits of the solar cell silicon wafer 20. The hole-punching machine is preferably a laser-beam hole-punching machine capable of punching holes at high speed and with high quality.

S26, cleaning: and (5) cleaning the punched original glass sheet by using a second cleaning machine, and washing off dust and dust generated in the punching process to prepare for the subsequent silk-screen printing process. The second cleaning machine adopts the mode of washing to wash former piece glass to the air knife weathers the water smoke on the former piece glass, so obtains glass body 11.

S27, storing slices: after the secondary cleaning, glass body 11 before the silk screen printing is placed in the storage device, when the silk screen printing needs to be changed and the screen printing plate is cleaned, glass body 11 before the silk screen printing equipment is temporarily stored through the storage device, the stop of the deep processing production line of backboard glass 10 can be avoided, and the production efficiency is improved.

S3, silk screen printing: the surface of the glass body 11 is coated with a reflective paint for the back plate glass 10 made of white glaze.

S4, curing: sending the glass body 11 coated with the reflective coating on the surface into a drying furnace, drying the reflective coating, and curing the reflective coating on the surface of the glass body 11 to form a reflective layer 12 fixed on the surface of the glass body 11, thereby obtaining a semi-finished product of the backboard glass; the reflective layer 12 is in a mesh shape, and the mesh-shaped reflective layer 12 has a plurality of mesh edges 121 and a plurality of empty regions 122 surrounded by the plurality of mesh edges 121. The drying temperature of the drying furnace is 160-200 ℃.

S5, tempering: and (2) feeding the semi-finished product of the back plate glass into a toughening furnace, heating the semi-finished product of the back plate glass to 600-700 ℃ by the toughening furnace, carrying out high-pressure quenching on the semi-finished product of the back plate glass by using wind pressure of 2-4 ten thousand Pa, and then rapidly cooling the semi-finished product of the back plate glass to 150 ℃ within 1-2 s (preferably about 1.5 s) to obtain the back plate glass 10. Therefore, the surface of the common glass generates stress, so that the back plate glass 10 with high performance index is obtained, and the back plate glass 10 has higher mechanical strength, bending strength, anti-drastic temperature difference capability and deflection. In this embodiment, the tempering furnace is an electrically heated continuous glass tempering furnace. In the embodiment, the bending strength of the tempered back plate glass 10 is more than 4-5 times that of common glass with the same thickness, the anti-drastic temperature difference capacity is 3 times that of the common glass with the same thickness, and the deflection is 3-4 times larger than that of the common glass with the same thickness; in addition, the toughened back plate glass 10 is in a tiny particle shape after being crushed, so that the harm to people can be avoided. In addition, in other embodiments, the low-speed tempering furnace can be selected as the tempering furnace to match the capacity of the raw glass, so that the production energy consumption is reduced.

S6, after tempering, post-treating the backboard glass 10, wherein the step S6 sequentially comprises the following sub-steps:

s61, cleaning and drying: the backplane glass 10 is cleaned using a third cleaning machine to remove the float, sink, mark, etc. from the backplane glass 10 in preparation for subsequent final packaging. The third cleaning machine cleans the backboard glass 10 by adopting a water washing mode, and an air knife dries water mist on the backboard glass 10.

S62, detection before packaging: the back plate glass 10 is detected on line by using full-automatic detection equipment, for example, whether the back plate glass 10 is complete or not, whether the surface has scratches or not is detected, and meanwhile, the back plate glass 10 is graded according to the detection result. The step is carried out on-line detection by full-automatic detection equipment, so that the labor cost can be saved.

S63, spreading paper and cutting: according to different grades, the back plate glass 10 is transferred to a glass pile of the corresponding grade from a deep processing production line by a mechanical arm, and after each piece of back plate glass 10 is stacked, paper is laid on the back plate glass 10 by an off-line paper laying machine. When the back plate is discharged, the mechanical arm can grab the back plate glass 10 from the upper surface of the back plate glass 10 and can grab the back plate glass 10 from the lower surface of the back plate glass 10, and the grabbing mode is flexible and various; different placement schemes may be used when stacking. The off-line paper laying machine is matched with the mechanical arm, and when one piece of back plate glass 10 is placed on the mechanical arm, the paper laying machine randomly finishes paper laying on the back plate glass 10. Compared with an online paper laying machine, the off-line paper laying machine is low in cost and good in economic performance.

And S64, packaging or warehousing.

In the deep processing method of the backboard glass 10, the tempering pretreatment process is formed by loading, edging, cleaning, corner detection, waste discharge, punching, cleaning, storing, silk-screen printing and curing, and the tempering post-treatment process is formed by cleaning, drying, detecting before packaging, unloading and paper laying. According to the application, the backboard glass 10 with the latticed reflecting layer 12 is efficiently processed by the deep processing method of the backboard glass 10, production lines are reasonably distributed, and the production capacity is improved.

The invention further provides a deep processing production line of the back plate glass 10, which is used for carrying out the deep processing method, and the deep processing production line comprises a sheet feeding machine used for carrying out a sheet feeding step, a pretreatment line used for carrying out a step of pretreating the original sheet glass, a screen printing machine used for carrying out a screen printing step, a drying furnace used for carrying out a curing step, a toughening furnace used for carrying out a toughening step, and a post-treatment line used for carrying out a step of post-treating the back plate glass 10. Preferably, the pretreatment line comprises an edge grinding machine, a first cleaning machine, a detection device, a waste discharge device, a perforating machine, a second cleaning machine and a sheet storage device which are sequentially arranged along the processing sequence. The post-processing line comprises a third cleaning machine, full-automatic detection equipment, a sheet discharging machine and a sheet laying machine which are sequentially arranged along the processing sequence.

Further, there may be one or more pretreatment lines. In the view shown in fig. 3, there are two pretreatment lines, each pretreatment line is followed by a corresponding screen printer and a corresponding drying oven, and forms a toughening pretreatment line, that is, each toughening pretreatment line includes a sheet feeder, an edge grinder, a first cleaning machine, a detection device, a waste discharge device, a perforating machine, a second cleaning machine, a sheet storage device, a screen printer and a drying oven, which are arranged in sequence along the processing sequence, one toughening furnace is provided with two toughening pretreatment lines, the two toughening pretreatment lines converge the semi-finished product of the backboard glass in front of the toughening furnace, the semi-finished product of the backboard glass is arranged at equal intervals, and the no-load rate of the toughening furnace is reduced. The two toughening pretreatment lines are mutually communicated and can be mutually repaired.

Further, as shown in fig. 3, a tempering furnace is provided with a tempering post-treatment line, the tempering post-treatment line is provided with two third cleaning machines and two full-automatic detection devices, and when one of the third cleaning machines or the full-automatic detection devices is overhauled, the other third cleaning machine or the full-automatic detection device can normally work, so that the production stability is improved.

Preferably, the storage device can be arranged behind one toughening furnace, so that the semi-finished product of the back plate glass before toughening during overhauling of the toughening furnace can be stored, and the leakage of the production line can be patched.

Further, an automatic connecting control system can be adopted in the deep processing production line of the back plate glass 10, and all processing equipment and all sections of connecting roller ways on the deep processing production line are in communication connection with the control system, so that the control system can dynamically coordinate the production beats and speeds of all the processing equipment and all the sections of connecting roller ways, and the capacity matching among all the single equipment is realized.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.