CN216466154U - Photovoltaic module plastic mechanism that flattens - Google Patents

Abstract

The utility model discloses a photovoltaic module flattening and shaping mechanism which comprises a rack, a module conveying mechanism and a flattening and shaping mechanism, wherein the flattening and shaping mechanism is provided with two flattening rollers and a pressing plate, and the two flattening rollers are respectively arranged at a feeding end and a discharging end of the rack in a transmission direction and are positioned right above a transmission path; the roll shafts of the two flattening rollers are connected to the two ends of the pressing plate respectively, and the bottom surface of the pressing plate is flush with the lowest points of the two flattening rollers so as to flatten the photovoltaic module extruded by the flattening rollers on the upstream side again. According to the utility model, the flattening roller is adopted to roll and extrude the photovoltaic module passing through the feeding end, the pressing plate is also utilized to flatten the photovoltaic module flattened by the flattening roller again, and finally the flattening roller at the discharging end is utilized to extrude the photovoltaic module again to keep the photovoltaic module flat, so that the phenomena of curling and tilting in the existing retired photovoltaic module treatment process are avoided, and the completeness and the separation convenience of the cell pieces in the subsequent back plate separation process are favorably ensured.

Description

Photovoltaic module plastic mechanism that flattens

Technical Field

The utility model relates to the technical field of retired photovoltaic cell recycling, in particular to a photovoltaic module flattening and shaping mechanism.

Background

With the continuous reduction of the photovoltaic power generation cost and the increase of the energy conservation and emission reduction pressure in China, the assembly machine loading amount in China increases year by year, and with the fact that the photovoltaic assemblies which are put into use at an early stage reach the service life, a large number of photovoltaic assemblies are going to be retired, and more waste assemblies are generated. Aluminum frames, silicon battery pieces, copper, tin, precious metal silver and the like in the photovoltaic module have considerable recovery value and economic profit, and on the other hand, reasonable recovery can reduce damage to the ecological environment, so that the recovery and utilization of the waste photovoltaic module have great significance in the aspects of environmental protection and resource recovery.

For the treatment of the retired photovoltaic module, a burying and burning method is mainly adopted. However, the back plate material in the photovoltaic module contains a large amount of fluorine elements, and if the back plate material is directly buried or incinerated, a large amount of harmful substances are generated, so that the damage to the ecological environment and human bodies is serious, and therefore, the glass and the back plate of the retired photovoltaic module need to be separated in layers in advance. After the photovoltaic module is retired, the glass can be broken in the long-term outdoor operation, disassembly, transportation and other processes, the assembly needs to be flattened and reshaped when the broken photovoltaic module is separated from the glass and the back plate, otherwise, the silicon battery piece is damaged or is difficult to separate due to mixing with substances such as glass. The conventional rolling method can cause the assembly to curl and tilt, which is not beneficial to subsequent separation work.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, the utility model provides the flattening and shaping mechanism for the photovoltaic module, which can improve the flatness of the photovoltaic module, and can not cause the phenomena of tilting, curling and the like of the module, so as to ensure the integrity and the separation convenience of the battery piece in the subsequent back plate separation process.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a photovoltaic module plastic mechanism that flattens includes:

a frame;

the assembly conveying mechanism is arranged on the rack and used for conveying the photovoltaic assembly along a first direction;

the flattening and shaping mechanism comprises two flattening rollers and a pressing plate, wherein the two flattening rollers are respectively arranged at the feeding end on the upstream side and the discharging end on the downstream side of the rack in the first direction and are positioned right above the transmission path;

the two ends of the pressing plate are respectively connected with the roll shafts of the flattening rollers, and the bottom surface of the pressing plate is parallel to the lowest point of the flattening rollers, so that the photovoltaic module on the upstream side after being extruded by the flattening rollers is flattened again.

As one of the implementation manners, the photovoltaic module flattening and shaping mechanism further comprises a feeding detection unit and a discharging detection unit, the feeding detection unit is arranged below the flattening roller on the upstream side, the discharging detection unit is arranged below the flattening roller on the downstream side, and the feeding detection unit and the discharging detection unit are respectively used for detecting whether the photovoltaic module is arranged on the module conveying mechanism at the feeding end and the discharging end.

As one embodiment, the flattening and shaping mechanism further comprises two lifting assemblies respectively arranged at the two flattening rollers, one end of each lifting assembly is relatively fixed with the frame, and the other end of each lifting assembly is used for controlling the height of the corresponding flattening roller.

As one embodiment, the lifting assembly comprises an air cylinder, guide plates and a sliding block, the two guide plates are respectively fixed on two side guard plates of the rack, the air cylinder is fixed on the rack and located below the assembly conveying mechanism, the sliding block is fixed at the end of the air cylinder and can longitudinally move along a guide rail of the guide plate under the driving of an air cylinder piston, and the end of a roll shaft of the flattening roll is rotatably connected with the corresponding sliding block.

As one embodiment, the feeding detection unit and the discharging detection unit each include a light sensor.

In one embodiment, the feeding detection unit and the discharging detection unit are respectively disposed on the guide plates corresponding to the flattening rollers on the upstream side and the flattening rollers on the downstream side.

As one embodiment, the photovoltaic module flattening and shaping mechanism further comprises a thickness measuring mechanism for measuring the thickness of the back plate, wherein the thickness measuring mechanism comprises a laser thickness measuring set and a thickness measuring reference plate; the frame comprises a non-thickness measuring area arranged on the upstream side of the feeding end and a thickness measuring area formed by the non-thickness measuring area in an enclosing mode, the laser thickness measuring unit is arranged in the thickness measuring area, the top end of the laser thickness measuring unit is not higher than the upper surface of the non-thickness measuring area, and the laser thickness measuring unit is used for emitting laser upwards to obtain the distance between the laser thickness measuring unit and the reflecting surface; the thickness measuring datum plate is arranged right above the laser thickness measuring unit in a distance-adjustable mode relative to the rack and used for reflecting received laser and pressing the laser to enter a photovoltaic module between the rack and the thickness measuring datum plate, and an orthographic projection of the thickness measuring datum plate on the rack is at least partially located in the non-thickness measuring area.

As one embodiment, the frame is provided with a measuring hole, the measuring hole penetrates through the whole thickness measuring area, and the laser thickness measuring unit is embedded in the measuring hole.

As one embodiment, the thickness measuring mechanism includes a plurality of pressing connecting rods and a telescopic mechanism fixed on the frame, the pressing connecting rods are vertically arranged around the measuring hole, the bottom ends of the pressing connecting rods are connected with the telescopic mechanism, the top ends of the pressing connecting rods are relatively fixed to the thickness measuring reference plate, and the pressing connecting rods drive the thickness measuring reference plate to move in the longitudinal direction to press the photovoltaic module in the process of changing the length of the telescopic mechanism.

As one embodiment, the telescopic mechanism is an air cylinder, a cylinder body of the air cylinder is fixed at the bottom of the rack, and a piston rod of the air cylinder extends out of the rack and is connected with the pressing connecting rod.

According to the utility model, the flattening roller is adopted to roll and extrude the photovoltaic module passing through the feeding end, the pressing plate is also utilized to flatten the photovoltaic module flattened by the flattening roller again, and finally the flattening roller at the discharging end is utilized to extrude the photovoltaic module again to keep the photovoltaic module flat, so that the phenomena of curling and tilting in the existing decommissioning photovoltaic module treatment process are avoided, and the completeness and the separation convenience of the cell pieces in the subsequent back plate separation process are favorably ensured.

Drawings

Fig. 1 is a schematic structural diagram of a photovoltaic module flattening and shaping mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a thickness measuring mechanism of a photovoltaic module backplane according to an embodiment of the present invention;

FIG. 3 is a top view of a thickness measuring mechanism for a photovoltaic module backsheet according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a thickness measuring method of a photovoltaic module back plate according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a photovoltaic module flattening and shaping method according to an embodiment of the present invention.

Detailed Description

In the present invention, the terms "disposed", "provided" and "connected" are to be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like, are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the application.

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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, an embodiment of the present invention provides a photovoltaic module flattening and shaping mechanism, including:

a frame 1;

the component conveying mechanism 2 is arranged on the rack 1 and used for conveying the photovoltaic components along a first direction;

the flattening and shaping mechanism 3 comprises two flattening rollers 31 and a pressing plate 32, wherein the two flattening rollers 31 are respectively arranged at a feeding end A on the upstream side and a discharging end B on the downstream side of the rack 1 in the first direction and are positioned right above the transmission path;

the two ends of the pressing plate 32 are respectively connected with the roll shafts of the two flattening rollers 31, and the bottom surface of the pressing plate 32 is flush with the lowest points of the two flattening rollers 31, so as to flatten the photovoltaic module pressed by the flattening roller 31 on the upstream side again. The pressing plate 32 is preferably assembled with the roller shaft in a hinged manner so that the rotating action of the flattening roller 31 does not affect the pressing plate 32.

As shown in fig. 1, the first direction is a direction from left to right, and the photovoltaic module is fed from the left side, passes through the feeding end a, the flattening roller 31 on the upstream side, the pressing plate 32, the flattening roller 31 on the downstream side, and the discharging end B in sequence, and then is discharged from the right side. It will be appreciated that the module transfer means 2 may be arranged continuously in this first direction, i.e. the module transfer means 2 remains continuous at both the flattening rollers 31, the platen 32. Preferably, a conveying roller is used as the component conveying mechanism 2, and the axial direction of the conveying roller is perpendicular to the first direction and also perpendicular to a guard plate (not shown) which provides a rotating fulcrum for the conveying roller on two sides of the machine frame 1. The frame 1 of this embodiment also has a support frame at the bottom, rollers at the bottom of the support frame, and a brake mechanism, which can conveniently move and position the backboard removing device.

Like this, the flattening roller 31 of feed end A at first rolls the extrusion to the photovoltaic module of process, in this process, the clamp plate 32, the flattening roller 31 of discharge end B pushes down in step, then under the combined action of subassembly conveying mechanism 2 and flattening roller 31, photovoltaic module is continued to be followed first direction transmission, when photovoltaic module passes through clamp plate 32 below, the clamp plate 32 then flattens it once more, finally, the photovoltaic module of extruding from clamp plate 32 is transmitted to the discharge end, the flattening roller 31 of discharge end extrudes photovoltaic module once more and makes it keep leveling, thereby the curling in the current decommissioning photovoltaic module course of treatment, the perk phenomenon, be favorable to guaranteeing integrality and the separation convenience of follow-up backplate separation in-process battery piece. It can be understood that an extremely small gap can be kept between the flattening roller 31, the pressing plate 32 and the photovoltaic module, so that the photovoltaic module can be conveyed forwards under the friction force of the flattening roller 31 and the module conveying mechanism 2, and the conveying is not stopped due to too large resistance. For example, the platen 32 may also be designed to be slightly higher than the lowest surface of the flattening roller 31 so that the photovoltaic module can better pass under the platen 32.

In order to improve the automation degree of the whole mechanism, the photovoltaic module flattening and shaping mechanism of the embodiment further comprises a feeding detection unit S1 and a discharging detection unit S2. The feeding detection unit S1 is disposed below the flattening roller 31 on the upstream side, the discharging detection unit S2 is disposed below the flattening roller 31 on the downstream side, and the feeding detection unit S1 and the discharging detection unit S2 are respectively used for detecting whether photovoltaic modules are on the module conveying mechanism 2 at the feeding end a and the discharging end B. When the feeding detection unit S1 detects that a photovoltaic module passes through, the two flattening rollers 31 and the pressing plate 32 are pressed downward, and the photovoltaic module starts to be flattened; when the discharging detection unit S2 detects that the photovoltaic module completely passes through, the two flattening rollers 31 and the pressing plate 32 are both lifted, and the flattening process of one sheet/batch of photovoltaic modules is completed.

In order to realize the automatic operation of the flattening rollers 31 and the pressing plate 32, the flattening and shaping mechanism 3 of the present embodiment further includes two lifting assemblies 30 respectively disposed at the two flattening rollers 31, one end of each lifting assembly 30 is fixed relative to the frame 1, and the other end is used for controlling the height of the corresponding flattening roller 31. Specifically, lifting unit 30 includes cylinder 301, baffle 302 and slider 303, two baffles 302 are fixed respectively on the both sides backplate of frame 1, cylinder 301 is fixed in frame 1, be located the below of subassembly conveying mechanism 2, slider 303 is fixed at the tip of cylinder, and can be along the guide rail longitudinal movement of baffle 302 under the drive of cylinder piston, the roller shaft tip of flattening roller 31 rotates with the slider 303 that corresponds and is connected to change the subassembly conveying mechanism 2's with the below distance under the drive of slider 303, adjust and compress tightly the degree. The slider 303 is freely movable and positionable along the guide rails of the guide plate 302 under the control of the air cylinder 301, so that the height of the platen roller 31 can be accurately positioned.

Here, the feeding detection unit S1 and the discharging detection unit S2 are respectively disposed on the guide plate 302 corresponding to the upstream flattening roller 31 and the downstream flattening roller 31, and the feeding detection unit S1 and the discharging detection unit S2 may each include a light sensor to sense whether there is a photovoltaic module on the module conveying mechanism 2.

In addition, as shown in fig. 2, the photovoltaic module flattening and shaping mechanism of this embodiment may further include a thickness measuring mechanism 100 for measuring the thickness of the back plate, where the thickness measuring mechanism 100 may be disposed at an upstream of the feeding end a, and measures the thickness of the back plate before feeding, or may be disposed at a downstream of the discharging end B, and measures the thickness of the back plate after flattening and discharging. When thickness measuring mechanism 100 located the upper reaches of feed end A, can carry out the backplate cutting to photovoltaic module between feed end A and discharge end B, photovoltaic module experiences the process of flattening earlier, back cutting backplate, flattening again. And when thickness measuring mechanism 100 located the low reaches of discharge end B, then only flatten photovoltaic module between feed end A and the discharge end B, photovoltaic module after flattening transmits to the low reaches end from discharge end B, carries out subsequent backplate cutting process again.

The thickness measuring mechanism 100 comprises a laser thickness measuring unit 103 and a thickness measuring reference plate 105, the frame 1 comprises a non-thickness measuring area 1a arranged on the upstream side of the feeding end A and a thickness measuring area 1b formed by surrounding the non-thickness measuring area 1a, the laser thickness measuring unit 103 is arranged in the thickness measuring area 1b, the top end of the laser thickness measuring unit is not higher than the upper surface of the non-thickness measuring area 1a, and the laser thickness measuring unit is used for emitting laser upwards to obtain the distance between the laser thickness measuring unit and the reflecting surface; the thickness measuring reference plate 105 is arranged right above the laser thickness measuring group 103 in a distance-adjustable mode relative to the machine frame 1, and is used for reflecting received laser and pressing a photovoltaic module entering between the machine frame 1 and the thickness measuring reference plate 105, and an orthographic projection of the thickness measuring reference plate 105 on the machine frame 1 is at least partially located in the non-thickness measuring area 1 a.

When the laser thickness measuring unit is arranged, it is preferable that the photovoltaic module is placed on the module transfer mechanism 2 with the back sheet on top and the glass cover sheet on bottom. The laser thickness measuring unit is arranged in the thickness measuring area, the thickness measuring reference plate is arranged above the thickness measuring area and the non-thickness measuring area, the reference thickness is measured through reflection signals of the thickness measuring reference plate, the thickness value of the thickest part of the backboard is calculated by combining the reflection signals of different areas of the backboard, and therefore the thickness of the backboard can be accurately measured without disassembling the backboard, and the backboard can be rapidly removed through physical cutting and the like in the process of treating the retired photovoltaic module.

Meanwhile, in the present embodiment, it is preferable that the thickness measuring mechanism 100 is disposed upstream of the feeding end a, so that the first thickness value S1 measured by the thickness measuring mechanism 100 can be used as a reference height for flattening the flattening roller 31 and the pressing plate 32, the pressing distance between the flattening roller 31 and the pressing plate 32 is finely adjusted by the reference height, and the second thickness value S2 and the third thickness value S3 can also be used as reference data of the pressing amount.

The thickness measuring mechanism 100 may specifically include a thickness measuring base 102, a laser thickness measuring set 103, and a thickness measuring reference plate 105, wherein the thickness measuring base 102 is disposed in the thickness measuring region 1b, and an upper surface of the thickness measuring base is lower than an upper surface of the non-thickness measuring region 1 a. The laser thickness measuring unit 103 includes a plurality of laser thickness measuring devices, and the laser thickness measuring devices are arranged on the upper surface of the thickness measuring base 102, and the top end of each laser thickness measuring device is not higher than the upper surface of the non-thickness measuring area 1a, and is used for emitting laser upwards to obtain the distance between the laser thickness measuring device and the reflecting surface. The thickness measuring reference plate 105 is arranged right above the laser thickness measuring group 103 in a distance-adjustable mode relative to the machine frame 1, and is used for reflecting received laser and pressing a photovoltaic module entering between the machine frame 1 and the thickness measuring reference plate 105, and an orthographic projection of the thickness measuring reference plate 105 on the machine frame 1 is at least partially located in the non-thickness measuring area 1 a.

In order to accurately and comprehensively measure the thickness values of various parts of the photovoltaic module, the laser thickness measuring set 103 of the embodiment at least comprises laser thickness measuring devices arranged at 4 corners of the thickness measuring base 102, and preferably comprises an edge thickness measuring device close to the edge of the thickness measuring base 102 and a central thickness measuring device close to the center of the thickness measuring base 102, wherein the laser thickness measuring devices are not less than two rows, for example, fig. 3 shows a form of three rows and three columns arranged in a rectangular array, and the thickness measuring region 1b and the thickness measuring base 102 are both rectangular. It is understood that in other embodiments, the thickness measuring region 1b may also be in the shape of a circle, an ellipse, a polygon (larger than four sides), etc., and the laser thickness gauges are also arranged in a corresponding array manner within the corresponding shape profile.

Optionally, the frame 1 is provided with a measuring hole 10, the measuring hole 10 penetrates through the whole thickness measuring region 1b (that is, the cross-sectional area of the hole is the area of the thickness measuring region 1b), and the thickness measuring base 102 and the laser thickness measuring unit 103 are embedded in the measuring hole 10, or the thickness measuring base 102 is located below the frame 1, and it is only necessary to ensure that the laser thickness measuring unit 103 is directly opposite to the thickness measuring region 1 b.

Before the photovoltaic module does not enter the thickness measuring area 1b, one end of the photovoltaic module can be clamped in the non-thickness measuring area 1a through the thickness measuring reference plate 105, and no shading object exists between the laser thickness measuring set 103 and the thickness measuring reference plate 105, so that the distance between the laser thickness measuring set 103 and the thickness measuring reference plate 105 is measured and recorded as a first thickness value S1; when the edge of the photovoltaic module enters the thickness measuring region 1b from the non-thickness measuring region 1a, the edge of the photovoltaic module is tightly pressed on the thickness measuring region 1b of the rack 1 by using the thickness measuring reference plate 105, the laser thickness gauge at the edge of the thickness measuring base 102 is right opposite to the photovoltaic module above, laser emitted by the laser thickness gauge can directly irradiate the surface of the backboard through a glass cover plate on the front side (the backboard faces upwards after the photovoltaic module is turned over for 180 degrees, and the glass cover plate on the front side is the bottom surface) of the photovoltaic module, the laser thickness gauge can measure the distance between the inner surface of the backboard at the edge of the photovoltaic module and the laser thickness gauge group 103 and record the distance as a second thickness value S2; when the middle part of the photovoltaic module enters the middle part which is opposite to the thickness measuring area 1b, laser emitted by the laser thickness measuring device can penetrate through the glass cover plate to reach the corresponding back plate area of the photovoltaic module, and the laser thickness measuring device can measure the distance between the inner surface of the back plate in the middle area of the photovoltaic module and the laser thickness measuring set 103 and record the distance as a third thickness value S3. And finally, subtracting the smaller value of the second thickness value S2 and the third thickness value S3 from the first thickness value S1 to obtain the thickness of the thickest part of the back plate, wherein the thickness can be used as the basis for next step of cutting the back plate.

It should be noted that, in consideration of the unevenness of the back sheet of the retired photovoltaic module, the data measured by the laser thickness meters may not be consistent, and the first thickness value S1 is preferably an average value of the data measured by the laser thickness meters. The second thickness value S2 and the third thickness value S3 are respectively the minimum values of the data measured by the plurality of laser thickness measuring devices. Considering that the second thickness value S2 and the third thickness value S3 may be affected by foreign matters on the surface or inside of the photovoltaic module during the measurement process, some measurement data with obvious anomalies need to be rejected. Particularly, the third thickness value S3 can obtain the measurement data when the light emitted by the laser thickness gauge group is irradiated on the surface dirt, the battery, the solder strip, the back plate, etc., so that the measurement data of the dirt, the battery, the solder strip, etc. need to be eliminated. For this purpose, the present embodiment may set a preset thickness value S0, where the preset thickness value S0 is a difference threshold between the second thickness value S2 and the third thickness value S3, and can be used as a reference for rejecting an abnormal value of the third thickness value S3. When the difference between the second thickness value S2 and the measured value exceeds the preset thickness value S0, the measured value is considered to be excessively deviated and is considered to be abnormal data, and the abnormal data needs to be rejected.

In the actual measurement process, the retired photovoltaic module is often placed between each processing procedure for transportation, and therefore, the module conveying mechanism 2 of this embodiment should transversely penetrate through the thickness measuring mechanism of the photovoltaic module backplane, the module conveying mechanism 2 may be used to convey the photovoltaic module towards the thickness measuring region 1b, and convey the photovoltaic module away from the thickness measuring region 1b, in order to clamp the photovoltaic module in the non-thickness measuring region 1a, an orthographic projection of the thickness measuring reference plate 105 on the rack 1, facing the incoming material direction (i.e., the upstream side) of the photovoltaic module, should be at least partially located outside the thickness measuring region 1b, i.e., at least partially located in the non-thickness measuring region 1a, and it can be ensured that the photovoltaic module is not inserted into the thickness measuring region 1b, and can be pressed on the rack 1 by the thickness measuring reference plate 105.

In order to fix the thickness measuring reference plate 105, the thickness measuring mechanism of the photovoltaic module back plate may further include a plurality of pressing connecting rods 104, the pressing connecting rods 104 are vertically disposed around the thickness measuring region 1b, and the thickness measuring reference plate 105 is disposed on the pressing connecting rods 104 in a distance-adjustable manner with respect to the rack 1. The pressing links 104 are preferably arranged in pairs on opposite sides of the thickness measuring region 1b and in the non-thickness measuring region 1 a. For example, the thickness measuring mechanism 100 for the photovoltaic module back panel further includes a telescopic mechanism 106 fixed on the rack 1, the bottom end of the pressing link 104 is connected to the telescopic mechanism 106, the top end of the pressing link 104 is fixed relative to the thickness measuring reference plate 105, and in the process of changing the length of the telescopic mechanism 106, the pressing link 104 drives the thickness measuring reference plate 105 to move in the longitudinal direction to press the photovoltaic module. Or, the thickness measurement reference plate 105 may be slidably sleeved on the pressing connecting rod 104, a compression spring is sleeved between the upper side of the thickness measurement reference plate 105 and the tail end of the pressing connecting rod 104 on the pressing connecting rod 104, and the photovoltaic module can be pressed on the rack 1 by pressing the thickness measurement reference plate 105 downwards through the compression spring.

Optionally, the telescopic mechanism 106 is an air cylinder, a cylinder body of the air cylinder is fixed at the bottom of the frame 1, and a piston rod of the air cylinder extends out of the frame 1 and is connected with the pressing connecting rod 104. By controlling the operation of the telescopic mechanism 106, the height of the thickness measuring reference plate 105 can be freely adjusted and locked.

With reference to fig. 2 to 4, when measuring the thickness of the photovoltaic module backplane, the specific method includes:

s01, the photovoltaic module with the frame removed faces upwards, and the photovoltaic module is sent to a non-thickness measuring area 1a which is covered by the orthographic projection of the edge of the thickness measuring reference plate 105 on the frame 1;

and S02, pressing the thickness measuring reference plate 105 on the upper surface of the photovoltaic module.

S03, working the laser thickness gauge set 103 in the middle of the thickness gauge base plate 105 under the thickness gauge base plate 105, and obtaining a first thickness value S1 according to the measurement result; the data measured by the laser thickness meters may be inconsistent in consideration of the unevenness of the back plate of the retired photovoltaic module, and the first thickness value S1 is an average value of the data measured by the laser thickness meters.

S04, the edge of the photovoltaic module is sent to a thickness measuring area 1b opposite to the laser thickness measuring group 103 on the rack 1, and a second thickness value S2 is obtained according to the measuring result, wherein the second thickness value S2 is the minimum value of data measured by a plurality of laser thickness measuring devices. Considering that the second thickness value S2 may be affected by foreign objects on the surface or inside the photovoltaic module during the measurement process, some measurement data with obvious anomalies need to be rejected.

S05, the middle part of the photovoltaic module is sent to a thickness measuring area 1b opposite to the laser thickness measuring group 103 on the rack 1, and a third thickness value S3 is obtained according to the measurement result, wherein the third thickness value S3 is the minimum value of data measured by a plurality of laser thickness measuring devices.

When light emitted by the laser thickness gauge group irradiates on positions of surface stains, batteries, welding strips, a back plate and the like, measurement data can be obtained, and therefore the measurement data of the stains, the batteries, the welding strips and the like need to be eliminated. For this purpose, the present embodiment sets a preset thickness value S0, the preset thickness value S0 is a difference threshold between the second thickness value S2 and the third thickness value S3, and can be used as a reference for rejecting an abnormal value of the third thickness value S3. In the process of obtaining the third thickness value S3, it is further required to determine whether the difference between the second thickness value S2 and the measured value exceeds the preset thickness value S0, and reject the measured value whose difference exceeds the preset thickness value S0. When the difference between the second thickness value S2 and the measured value exceeds the preset thickness value S0, the measured value is considered to be excessively deviated and is considered to be abnormal data, and the abnormal data needs to be rejected.

And S06, subtracting the smaller value of the second thickness value S2 and the third thickness value S3 from the first thickness value S1 to obtain the thickness of the thickest part of the back plate, wherein the thickness can be used as the basis for the next step of cutting the back plate.

As shown in fig. 5, the utility model further provides a photovoltaic module flattening and shaping method, which includes:

s11, transmitting the photovoltaic module with the frame removed to a feeding end A along a first direction;

s12, extruding the photovoltaic module below by the flattening roller 31 at the feeding end A, and flattening the photovoltaic module transmitted below by the pressing plate 32 at the downstream of the flattening roller 31 again;

s13, the flattening roller 31 at the discharge end B extrudes the photovoltaic module transmitted by the pressing plate 32 again.

Wherein, the flattening roller 31 of the feed end A, the pressing plate 32 and the flattening roller 31 of the discharge end B have flush lower surfaces, and the three move synchronously. After the flattening roller 31 of the feeding end A is pressed down, the photovoltaic module is continuously transmitted between the pressing plate 32 and the module conveying mechanism 2 under the longitudinal limiting effect of the pressing plate 32, and when the photovoltaic module passes through the lower part of the pressing plate 32 and reaches the lower part of the flattening roller 31 of the discharging end B, the flattening roller 31 of the discharging end B is continuously matched with the module conveying mechanism 2 to extrude the photovoltaic module, so that the flatness of the photovoltaic module is corrected to be in an ideal state. It will be appreciated that the assembly glass or backsheet layer separation process may also be accomplished during the press shaping.

The process of measuring the thickness of the photovoltaic module back plate can be used as a part of the flattening and shaping method of the photovoltaic module, preferably, the thickness measurement of the back plate is completed before the feeding end A, and then the pressing distance is adjusted according to the thickness measurement result of the back plate in the flattening and shaping process.

In summary, the photovoltaic module passing through the feeding end is rolled and extruded by the flattening roller, the photovoltaic module flattened by the flattening roller is flattened again by the pressing plate, and the photovoltaic module is pressed again by the flattening roller at the discharging end to keep flat, so that the phenomena of curling and tilting in the existing decommissioned photovoltaic module treatment process are avoided, and the completeness and the separation convenience of the battery piece in the subsequent back plate separation process are favorably ensured. In addition, the thickness of the back plate can be measured before flattening to control the flattening effect, and the separation of the back plate or the separation of the assembly glass can be completed in the flattening process.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims (10)

1. The utility model provides a photovoltaic module plastic mechanism that flattens which characterized in that includes:

a frame (1);

the assembly conveying mechanism (2) is arranged on the rack (1) and used for conveying the photovoltaic assembly along a first direction;

the flattening and shaping mechanism (3) comprises two flattening rollers (31) and a pressing plate (32), wherein the two flattening rollers (31) are respectively arranged at a feeding end (A) at the upstream side and a discharging end (B) at the downstream side of the rack (1) in the first direction and are positioned right above the transmission path;

the two ends of the pressing plate (32) are respectively connected with the roll shafts of the flattening rollers (31), and the bottom surface of the pressing plate (32) is flush with the lowest points of the flattening rollers (31) so as to flatten the photovoltaic module extruded by the flattening rollers (31) on the upstream side again.

2. The photovoltaic module flattening and shaping mechanism according to claim 1, further comprising a feeding detection unit (S1) and a discharging detection unit (S2), wherein the feeding detection unit (S1) is disposed below the flattening roller (31) at an upstream side, the discharging detection unit (S2) is disposed below the flattening roller (31) at a downstream side, and the feeding detection unit (S1) and the discharging detection unit (S2) are respectively used for detecting whether a photovoltaic module exists on the module conveying mechanism (2) at the feeding end (a) and the discharging end (B).

3. The photovoltaic module flattening and shaping mechanism according to claim 2, wherein the flattening and shaping mechanism (3) further comprises two lifting assemblies (30) respectively disposed at the two flattening rollers (31), one end of each lifting assembly (30) is fixed relative to the frame (1), and the other end is used for controlling the height of the corresponding flattening roller (31).

4. The photovoltaic module flattening and shaping mechanism according to claim 3, wherein the lifting assembly (30) comprises a cylinder (301), guide plates (302) and sliding blocks (303), the two guide plates (302) are respectively fixed on two side guard plates of the rack (1), the cylinder (301) is fixed on the rack (1) and located below the module conveying mechanism (2), the sliding blocks (303) are fixed at ends of the cylinder and can move longitudinally along guide rails of the guide plates (302) under the driving of a cylinder piston, and roll shaft ends of the flattening roll (31) are rotatably connected with the corresponding sliding blocks (303).

5. The photovoltaic module flattening and shaping mechanism according to claim 2, wherein the feeding detection unit (S1) and the discharging detection unit (S2) each include a light sensor.

6. The photovoltaic module flattening and shaping mechanism according to claim 4, wherein the feeding detection unit (S1) and the discharging detection unit (S2) are respectively arranged on the guide plates (302) corresponding to the flattening roller (31) on the upstream side and the flattening roller (31) on the downstream side.

7. The photovoltaic module flattening and shaping mechanism according to any one of claims 1 to 6, further comprising a thickness measuring mechanism (100) for measuring the thickness of the back plate, wherein the thickness measuring mechanism (100) comprises a laser thickness measuring set (103) and a thickness measuring reference plate (105); the frame (1) comprises a non-thickness measuring area (1a) arranged on the upstream side of the feeding end (A) and a thickness measuring area (1b) formed by surrounding the non-thickness measuring area (1a), the laser thickness measuring group (103) is arranged on the thickness measuring area (1b), the top end of the laser thickness measuring group is not higher than the upper surface of the non-thickness measuring area (1a), and the laser thickness measuring group is used for emitting laser upwards to obtain the distance between the laser thickness measuring group and the reflecting surface; the thickness measuring reference plate (105) is arranged right above the laser thickness measuring group (103) in a distance-adjustable mode relative to the rack (1) and used for reflecting received laser and pressing a photovoltaic module entering between the rack (1) and the thickness measuring reference plate (105), and the orthographic projection of the thickness measuring reference plate (105) on the rack (1) is at least partially located in the non-thickness measuring area (1 a).

8. The photovoltaic module flattening and shaping mechanism according to claim 7, wherein a measuring hole (10) is formed in the machine frame (1), the measuring hole (10) penetrates through the whole thickness measuring region (1b), and the laser thickness measuring set (103) is embedded in the measuring hole (10).

9. The photovoltaic module flattening and shaping mechanism according to claim 8, wherein the thickness measuring mechanism (100) includes a plurality of pressing connecting rods (104) and a telescopic mechanism (106) fixed on the rack (1), the pressing connecting rods (104) are vertically arranged around the measuring hole (10), the bottom ends of the pressing connecting rods (104) are connected with the telescopic mechanism (106), the top ends of the pressing connecting rods (104) are fixed relative to the thickness measuring reference plate (105), and the pressing connecting rods (104) drive the thickness measuring reference plate (105) to move in the longitudinal direction to press the photovoltaic module during the length change of the telescopic mechanism (106).

10. The photovoltaic module flattening and shaping mechanism according to claim 9, wherein the telescopic mechanism (106) is an air cylinder, a cylinder body of the air cylinder is fixed at the bottom of the rack (1), and a piston rod of the air cylinder extends out of the rack (1) and is connected with the pressing connecting rod (104).

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