Series welding machine for N-type assembly

Abstract

The utility model relates to the technical field of series welding machines, in particular to a series welding machine for an N-type assembly, which comprises a machine tool, a transmission rod is rotatably mounted on the machine tool, a first motor is fixedly mounted at the side end of the machine tool, a transmission wheel is fixedly mounted at the side end of the transmission rod, a transmission belt is mounted on the transmission wheel, and a second motor is mounted on the transmission belt. An infrared welding device is fixedly mounted on the machine tool, a pressing rod is slidably mounted on the machine tool, a pressing cylinder is rotatably mounted at the bottom end of the pressing rod, a spring is mounted on the pressing rod, second motors are uniformly and fixedly mounted on the machine tool, and fan blades are fixedly mounted on rotating shafts of the second motors; the pressing rod pushes the pressing cylinder downwards under the action of the elastic force of the spring, the welding strip can be flattened by the pressing cylinder under the action of the elastic force of the spring, the welding strip is more attached to a battery piece, and the welding effect of the multi-main-grid-line battery can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a series welding machine technical field, especially a kind of for N type component series welding machine. BACKGROUND

[0002] N type component is increasingly widely used in photovoltaic industry, in its production process, efficient accurate series welding link is crucial;In practical application, N type component series welding machine usually needs following technology:

[0003] 1, high-precision welding mechanism, for example laser welding machine, infrared welding machine etc., can realize the firm connection between cell piece;

[0004] 2, accurate positioning system, such as visual positioning device, ensure that the position of cell piece is accurate and correct in series welding process;

[0005] 3, stable conveying device, like synchronous belt conveyor, guarantee the smooth transportation of cell piece before and after welding.

[0006] Existing infrared welding is a kind of way commonly used in battery series welding, its working principle is to make full use of the thermal radiation characteristics of infrared to realize the connection of cell piece main grid line and solder strip, place solder strip on cell piece main grid line, and the thermal radiation of infrared makes the material of cell piece main grid line and solder strip gradually reach its melting point, realizes welding;In traditional solar cell, usually only several thicker main grid lines are used to collect current. More main grid lines can reduce the transmission distance of current in cell piece, reduce resistance loss, thereby improve the output power and power generation efficiency of battery, and to a certain extent, the amount of silver paste can be reduced, thereby reducing production cost.

[0007] But in the implementation process of the above technical scheme, it is found that at least the following technical problems exist: in common welding, the number of main grid lines and solder strips is small, and the width is wide, so the solder strip can be easily welded with the main grid line, but in the welding of multi-main grid line battery, the number of main grid lines and solder strips is more and thinner, if the solder strip and the main grid line are not completely matched, the solder strip after melting cannot be completely fused with the main grid line, so it is not suitable for the welding of multi-main grid line battery. INVENTION CONTENTS

[0008] In view of the deficiencies of the prior art, the utility model provides a series welding machine for N type component, to solve the technical problems that in common welding, the number of main grid lines and solder strips is small, and the width is wide, so the solder strip can be easily welded with the main grid line, but in the welding of multi-main grid line battery, the number of main grid lines and solder strips is more and thinner, if the solder strip and the main grid line are not completely matched, the solder strip after melting cannot be completely fused with the main grid line, so it is not suitable for the welding of multi-main grid line battery.

[0009] To achieve the above object, the utility model discloses the following technical scheme to realize:

[0010] A be used for N type component string welding machine, including lathe, the transmission rod is rotatably installed on lathe, the first motor is fixedly installed on the side end of lathe, the transmission wheel is fixedly installed on the side end of transmission rod, and the transmission belt is installed on transmission wheel, and the infrared welding device is fixedly installed on lathe, and the pressure rod is slidably installed on lathe, and the pressure cylinder is rotatably installed on the bottom end of pressure rod, and the spring is installed on pressure rod, and the second motor is fixedly installed on lathe, and the fan blade is fixedly installed on the rotating shaft of second motor, and the transmission belt is installed between two transmission rods.

[0011] Preferably, the image sensor is fixedly installed on the lathe.

[0012] Preferably, the sliding rod is fixedly installed on the lathe.

[0013] Preferably, the lathe is rotatably installed with a bidirectional threaded rod.

[0014] Preferably, the sliding rod is symmetrically slidably installed with a sliding plate; and the two sliding plates are threadedly connected with the two ends of the bidirectional threaded rod.

[0015] Preferably, the sliding plate is slidably installed with an electrode holder.

[0016] Preferably, the sliding plate is fixedly installed with an electric push rod; the telescopic rod of the electric push rod is fixedly connected with the electrode holder, and the electrode holder and the electric push rod are installed with an insulating pad on the contact surface.

[0017] Preferably, the lathe is installed with a support plate.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] I. The battery piece and the welding strip will pass below the pressure cylinder. When the battery piece and the welding strip pass below the pressure cylinder, the pressure rod is pushed downward by the spring force, the welding strip is flattened by the pressure cylinder under the action of the spring force, and the welding strip is more closely attached to the battery piece, and then is radiated and melted by the infrared welding device, so that the welding strip can be fused with the main grid line. When the welding is completed, the fan blade is rotated by the second motor, air is blown downward, the air is quickly blown to the welded battery piece, the battery piece is cooled, the melted welding position is quickly cooled and solidified, and false welding is avoided, so that the effect of welding the multi-main grid line battery is achieved.

[0020] Two electric push rods will start to push down the electrode holder, so that the electrode holder can slide down until the positive and negative electrodes at both ends of the battery piece are pressed, and the two electrode holders will electrify the battery piece, when the battery piece is electrified, the electrons and holes in the battery piece are excited to recombine, thereby releasing photons to produce a luminescence phenomenon, then the image sensor will take a picture to form an EL image, and then the host computer compares the captured image, judges whether the battery string has defects according to the brightness, color, uniformity and other characteristics of the EL image, and after welding is completed, the welding quality can be quickly detected so as to adjust the welding process in time, and the effect of improving the welding qualified rate is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and the content of the specification can be implemented, the following will be described in detail with the preferred embodiment of the present application and the accompanying drawings.

[0022] Figure 1 The machine tool structure diagram of the present application;

[0023] Figure 2 The pressing rod structure diagram of the present application;

[0024] Figure 3 The second motor structure diagram of the present application;

[0025] Figure 4 The sliding plate structure diagram of the present application;

[0026] Figure 5 The support plate structure diagram of the present application.

[0027] Legend: 1, machine tool; 2, transmission rod; 3, transmission belt; 4, first motor; 5, infrared welder; 6, pressing rod; 7, pressing cylinder; 8, spring; 9, second motor; 11, fan blade; 12, sliding rod; 13, bidirectional threaded rod; 14, sliding plate; 15, electrode holder; 16, electric push rod; 17, image sensor; 18, support plate; 19, transmission wheel. DETAILED DESCRIPTION

[0028] The embodiment of the application provides a kind of for N type component string welding machine, effectively solve the main grid line and the quantity of welding strip is less when commonly welded, and width is wider, therefore can easily make welding strip and main grid line welding, but in the welding of multiple main grid line battery, the quantity of main grid line and welding strip is more and thinner, if welding strip and main grid line do not completely adhere, then it is easy to cause welding strip to melt and cannot complete fusion with main grid line, therefore it is not suitable for the welding of multiple main grid line battery, battery piece and welding strip will pass below pressure cylinder, when battery piece and welding strip pass below pressure cylinder, pressure rod is acted by spring force, push down pressure cylinder, welding strip will be flattened by pressure cylinder under the action of spring force, and make welding strip and battery piece more adhere, then be radiated and melted by infrared welding device, so that welding strip can complete fusion with main grid line, when welding is completed, second motor will drive fan blade to rotate, blow down, make air quickly blow to the battery piece welded, cool battery piece, make the position of melted welding quickly cool and solidify, avoid false welding, reach the effect that can satisfy the welding of multiple main grid line battery, two electric push rods will be started to push down electrode holder, so that electrode holder can slide down until the positive and negative poles at both ends of battery piece, two electrode holders will be powered on battery piece, when battery piece is powered on, electron and hole in battery piece are excited to recombine, thereby releasing photon to produce luminescence phenomenon, then image sensor will be photographed to form EL image, and then the image is compared by host computer, whether battery string has defect is judged according to the brightness, color, uniformity and other characteristics of EL image, after welding is completed, welding quality can be detected quickly, so that welding process can be adjusted in time, reach the effect of improving welding qualification rate.

[0029] Embodiment

[0030] As Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 5 Indicated, the technical scheme in the embodiment of the application effectively solves the main grid line and the quantity of welding strip is less when commonly welded, and width is wider, therefore can easily make welding strip and main grid line welding, but in the welding of multiple main grid line battery, the quantity of main grid line and welding strip is more and thinner, if welding strip and main grid line do not completely adhere, then it is easy to cause welding strip to melt and cannot complete fusion with main grid line, therefore it is not suitable for the welding of multiple main grid line battery, overall idea as follows:

[0031] The utility model provides a kind of for N type component string welding machine, including lathe 1, transmission rod 2 is rotatably installed on lathe 1, the side end of lathe 1 is fixedly installed with first motor 4, the side end of transmission rod 2 is fixedly installed with transmission wheel 19, transmission belt 3 is installed on transmission wheel 19, infrared welder 5 is fixedly installed on lathe 1, pressure rod 6 is slidably installed on lathe 1, and the bottom end of pressure rod 6 is rotatably installed with pressure cylinder 7.

[0032] Spring 8 is installed on pressure rod 6, second motor 9 is evenly fixedly installed on lathe 1, and fan blade 11 is fixedly installed on the rotating shaft of second motor 9;Transmission belt is installed between two transmission rods 2, image sensor 17 is fixedly installed on lathe 1, sliding rod 12 is fixedly installed on lathe 1, and bidirectional threaded rod 13 is rotatably installed on lathe 1.

[0033] Sliding plate 14 is slidably installed on sliding rod 12 symmetrically;Two sliding plates 14 are threadedly connected with the two ends of bidirectional threaded rod 13 respectively, electrode holder 15 is slidably installed on sliding plate 14, and electric push rod 16 is fixedly installed on sliding plate 14;The telescopic rod of electric push rod 16 is fixedly connected with electrode holder 15, and insulating pad is installed on the contact surface of electrode holder 15 and electric push rod 16, and support plate 18 is installed on lathe 1.

[0034] Working principle:

[0035] First, in use, battery piece and solder strip are placed on the transmission belt by mechanical arm, after battery piece and solder strip are placed, first motor 4 starts to drive transmission rod 2 to rotate, and transmission rod 2 drives transmission belt to move, so that battery piece and solder strip move to the lower side of infrared welder 5, before this, battery piece and solder strip pass through under pressure cylinder 7, when battery piece and solder strip pass through under pressure cylinder 7, pressure rod 6 is pushed down pressure cylinder 7 under the action of spring 8, because solder strip is usually hollow tinned copper wire (hollow area fills with resist), material is soft, and the solder strip is thin for main grid line welding, so the solder strip is pressed flat by pressure cylinder 7 under the action of spring 8 (support plate 18 provides support from below), and the solder strip is more attached to battery piece, and the width of solder strip after being pressed flat will increase slightly, so that the solder strip can better cover main grid line, and then be radiated and melted by infrared welder 5, so that the solder strip can be fused with main grid line, when welding is completed, transmission belt will continue to drive the battery piece after being welded to move to the lower side of second motor 9, and second motor 9 drives fan blade 11 to rotate after starting, and air is blown down, so that air is blown to the battery piece after being welded quickly, and battery piece is cooled, so that the welded position after being melted is cooled and solidified quickly, to avoid virtual welding.

[0036] The second step, after the battery piece temperature drops, the internal resistance of the battery piece caused by high temperature will be avoided, which will affect the subsequent detection. When the conveying belt sends the battery piece to the position under the image sensor 17, the image sensor 17 takes a picture of the battery piece in place (the image sensor 17 is connected to the upper computer), and the two electric push rods 16 will start to push the electrode frame 15 downward, so that the electrode frame 15 can slide downward until the positive and negative electrodes at both ends of the battery piece are pressed (the support plate 18 provides support from below), and the two electrode frames 15 will conduct electricity to the battery piece (the two electrode frames 15 are connected to the positive and negative electrodes of the power supply), when the battery piece is electrified, the electrons and holes in the battery piece are excited to recombine, thereby releasing photons to produce a luminescent phenomenon, then the image sensor 17 will take a picture to form an EL image, and then the upper computer will compare the photographed image, and according to the brightness, color, uniformity and other characteristics of the EL image, it is judged whether the battery string has defects such as hidden cracks, broken grids, black heart pieces and short circuits. The area with uniform and high brightness usually indicates that the battery performance is good, while the dark area, black spots or irregular light-emitting area may indicate that there is a quality problem; when the size of the battery piece produced changes, the distance between the two sliding plates 14 can be changed by rotating the two-way threaded rod 13, so that the production change can be adjusted.

[0037] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A N-type component string welding machine, comprising a machine tool (1), a transmission rod (2) is rotatably installed on the machine tool (1), a first motor (4) is fixedly installed on the side end of the machine tool (1), a transmission wheel (19) is fixedly installed on the side end of the transmission rod (2), a transmission belt (3) is installed on the transmission wheel (19), an infrared welding device (5) is fixedly installed on the machine tool (1), characterized in that, The machine tool (1) is slidably installed with a pressing rod (6), the bottom end of the pressing rod (6) is rotatably installed with a pressing cylinder (7), the pressing rod (6) is installed with a spring (8), the machine tool (1) is uniformly and fixedly installed with a second motor (9), the rotating shaft of the second motor (9) is fixedly installed with a fan blade (11). Wherein, the transmission belt is installed between the two transmission rods (2).

2. A machine for string welding of N-type components as claimed in claim 1, characterized in that The machine tool (1) is fixedly installed with an image sensor (17).

3. A machine for string welding N-type components as claimed in claim 1, characterized in that, The machine tool (1) is fixedly installed with a sliding rod (12).

4. A machine for string welding N-type components as claimed in claim 1, characterized in that, The machine tool (1) is rotatably installed with a bidirectional threaded rod (13).

5. A machine for welding N-type module strings as claimed in claim 3, characterized in that, The sliding rod (12) is slidably installed with a sliding plate (14) symmetrically. Wherein, the two sliding plates (14) are respectively threadedly connected with the two ends of the bidirectional threaded rod (13).

6. A machine for welding a string of N-type components as claimed in claim 5, characterized in that, The sliding plate (14) is slidably installed with an electrode holder (15).

7. A machine for welding N-type module strings as defined in claim 5, characterized in that, The sliding plate (14) is fixedly installed with an electric push rod (16). Wherein, the telescopic rod of the electric push rod (16) is fixedly connected with the electrode holder (15), the electrode holder (15) and the electric push rod (16) are installed with an insulating pad on the contact surface.

8. A machine for welding N-type module strings as defined in claim 1, characterized in that, The machine tool (1) is installed with a supporting plate (18).

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