A welding conveyor line for a high-speed string welding machine

Abstract

The present invention discloses a welding conveyor line of a high-speed string welding machine, comprising: a welding support frame, a welding belt, a welding belt driving device, and a vacuum adsorption structure. The welding belt driving device is arranged on the welding support frame, and drives the welding belt to operate to convey battery strings and welding belts. The vacuum adsorption structure is arranged below the welding belt to ensure that the position of the battery string does not change during the transmission process. Through the above method, the welding conveyor line of a high-speed string welding machine of the present invention can simultaneously transmit multiple battery strings. Vacuum adsorption and heating are arranged below the belt, which can not only ensure the transmission accuracy of the battery string, but also facilitate the heating and welding of the battery string, so that the production capacity of the equipment is doubled, and the floor space of the equipment can also be reduced.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic module welding equipment, and in particular to a welding conveyor line for a high-speed string welding machine. Background Technology

[0002] With the increasingly widespread application of solar power generation, the demand for photovoltaic (PV) modules is growing rapidly. To improve the conversion efficiency of PV modules, various new technologies are constantly emerging. However, some of these technologies, such as the recently developed half-cell and multi-cell technologies, while improving the conversion efficiency of PV modules, reduce the production efficiency of traditional PV module manufacturing equipment. Against this backdrop, a high-speed conveyor line is needed to improve the production efficiency of PV modules. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a welding conveyor line for a high-speed string welding machine, which has the advantages of high reliability, accurate positioning and compact structure, and has a broad market prospect in the application and popularization of solar photovoltaic module welding equipment.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A welding conveyor line for a high-speed string welding machine is provided, comprising: a welding support frame, a welding belt, a welding belt drive device, and a vacuum adsorption structure. The welding belt drive device is mounted on the welding support frame and drives the welding belt to transport battery strings and welding strips. The vacuum adsorption structure is located below the welding belt to ensure that the position of the battery strings does not change during transport.

[0006] The vacuum adsorption structure includes a vacuum adsorption plate and vacuum adsorption holes. The vacuum adsorption plate has vacuum adsorption holes distributed on it. The welding belt runs in close contact with the vacuum adsorption plate and has air holes corresponding to the vacuum adsorption holes, so that the battery string remains in an adsorption state during transportation.

[0007] A welding strip guide groove is provided on one or more of the welding belt, the vacuum adsorption plate, or the fixed guide plate at the head of the welding belt, so that the welding strip below the battery cell is located in the welding strip guide groove and the welding strip is prevented from deviating.

[0008] In a preferred embodiment of the present invention, the welding belt drive device includes a welding drive wheel and a welding driven wheel for providing power for the welding belt transmission. The welding drive wheel and the welding driven wheel are assembled with a welding support frame via precision bearings, and the welding belt is wrapped around the welding drive wheel and the welding driven wheel.

[0009] In a preferred embodiment of the present invention, a welding strip pressing block is provided above the welding belt to press all the welding strips above the battery cell onto the battery cell to prevent the welding strips from shifting. The two ends of the welding strip pressing block are magnetically connected to the vacuum adsorption plate.

[0010] In a preferred embodiment of the present invention, a heating device is provided below the welding belt or above the battery string to heat the battery string on the welding belt.

[0011] In a preferred embodiment of the present invention, a welding belt is provided on the welding support frame, and a welding belt guide groove is provided on the welding belt guide plate located at the head of the welding support frame.

[0012] In a preferred embodiment of the present invention, a welding belt is provided on the welding support frame, and a welding belt guide groove is provided on the welding belt, or on the welding belt and the vacuum adsorption plate.

[0013] In a preferred embodiment of the present invention, the welding support frame is provided with a plurality of welding belts, and a gap is provided between two adjacent welding belts to allow the welding belts to pass through.

[0014] In a preferred embodiment of the present invention, a plurality of welding strip guide grooves corresponding to the gaps between the welding belts are provided on the vacuum adsorption plate.

[0015] In a preferred embodiment of the present invention, a welding strip guide plate is fixedly provided at the head of the welding support frame, and a welding strip guide groove is provided on the welding strip guide plate.

[0016] In a preferred embodiment of the present invention, an inlet groove is connected to the first end of the welding strip guide groove on the welding strip guide plate.

[0017] The beneficial effects of this invention are: it can transport multiple battery strings simultaneously, and the vacuum adsorption and heating are set under the belt, which can not only ensure the transmission accuracy of the battery strings, but also facilitate the heating and welding of the battery strings, thereby increasing the production capacity of the equipment by several times, and also reducing the footprint of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a welding conveyor line for a high-speed string welding machine according to the present invention;

[0020] Figure 2 This is a partial structural schematic diagram of a welding conveyor line of a high-speed string welding machine according to a second embodiment of the present invention;

[0021] Figure 3 This is a partial structural schematic diagram of a welding conveyor line of a high-speed string welding machine according to the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a battery string and welding strip in a preferred embodiment of a welding conveyor line of a high-speed string welding machine according to the present invention.

[0023] Figure 5 This is a partial structural schematic diagram of the welding belt drive device in a preferred embodiment of the welding conveyor line of a high-speed string welding machine according to the present invention;

[0024] Figure 6 This is a schematic diagram of the vacuum adsorption structure in a preferred embodiment of the welding conveyor line of a high-speed string welding machine according to the present invention. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-6 The embodiments of the present invention include:

[0027] A welding conveyor line for a high-speed string welding machine is a welding conveyor line that can simultaneously transport multiple strings. Its structure includes: a welding support frame 61, a welding belt 62, a welding belt drive device 63, and a vacuum adsorption structure 64. The welding belt drive device is disposed on the welding support frame and drives the welding belt to rotate, so as to transport the battery string 600 and the welding strip 601. The vacuum adsorption structure is disposed below the welding belt to ensure that the position of the battery string does not change during the transmission process.

[0028] The welding belt drive device 63 includes a welding drive wheel 630 and a welding driven wheel for providing power for the welding belt transmission. The welding drive wheel and the welding driven wheel are assembled with the welding support frame through a precision bearing 631, and the welding belt is wrapped around the welding drive wheel and the welding driven wheel.

[0029] The welding drive pulley can be driven by a welding drive pulley servo motor 632 mounted on it. To ensure the transmission accuracy of the battery string on the welding belt, the welding drive pulley servo motor is directly connected to the welding drive pulley via a reducer 633 and a coupling 634. Alternatively, the welding drive pulley can be powered by a stepper motor or a synchronous belt connected to it.

[0030] To prevent the welding belt from slipping, the welding drive pulley can be designed as a drum-shaped pulley. Alternatively, it can be designed as a cylindrical or other conventional shape. The length of the welding drive pulley can be set according to the length of one or more battery strings being simultaneously transmitted on it.

[0031] To increase the friction of the welding belt, a reverse tension idler pulley 635 is installed near the welding drive pulley to increase the wrap angle of the welding belt on the welding drive pulley, thereby increasing the friction between the welding drive pulley and the welding belt, reducing the possibility of sliding friction between the welding belt and the welding drive pulley, and ensuring the transmission accuracy of the battery string.

[0032] A pneumatic tensioning mechanism 65 can be installed below the welding drive wheel. The pneumatic tensioning mechanism includes a pneumatic tensioning drive device, a tensioning frame, and a pneumatic tensioning wheel. The pneumatic tensioning wheel is rotatably mounted on the tensioning frame. The tensioning frame is connected to the welding support frame below the welding drive wheel and / or the welding passive wheel via a precision linear guide rail. The pneumatic tensioning drive device drives the tensioning frame to move back and forth to tension or loosen the welding belt.

[0033] The pneumatic tensioning drive device has a solenoid valve and a pressure regulating valve connected to the air source front end. After the pneumatic tensioning drive device is vented, the welding belt can be quickly replaced. The pressure regulating valve can ensure that the welding belt is always under the set tension condition. At the same time, when the welding belt is heated and becomes longer, the pneumatic tensioning mechanism can counteract the deformation of the welding belt.

[0034] A solder ribbon pressing block 66 is also provided above the battery cell. The solder ribbon pressing block is magnetically connected to the vacuum adsorption plate to press all the solder ribbons above the battery cell onto the battery cell and prevent the solder ribbons from shifting. In the battery string, the solder ribbon above the previous battery cell and the solder ribbon below the next battery cell are a whole strip, that is, the front part 601a of the solder ribbon is set on the top of the previous battery cell, and the rear part 601b of the solder ribbon is set on the bottom of the next battery cell.

[0035] Underneath multiple strings of battery cells on the welding belt, there can be only one vacuum adsorption structure, or, depending on the size and specifications of different battery strings, an independent vacuum adsorption structure can be set under each battery string to ensure a good adsorption effect.

[0036] The vacuum adsorption structure 64 includes a vacuum adsorption plate 641, vacuum adsorption holes 642, and a vacuum generating device. The vacuum adsorption plate has a plurality of vacuum adsorption holes that are connected to the vacuum generating device. The vacuum adsorption plate is disposed between the welding belts, and the upper welding belt runs in close contact with the vacuum adsorption plate. The adsorption holes on the vacuum adsorption plate 4a correspond to the air holes 611 on the welding belt, which can ensure that the battery string is always in an adsorption state during the transmission process, thus ensuring the transmission accuracy of the battery string.

[0037] A heating device 643 is also installed below the welding belt or above the battery string to heat the battery string on the welding belt. This increases the temperature of the battery string before welding, shortens the welding time on the equipment, and improves the equipment's productivity. When the heating device is located below the welding belt, it can be integrated with the vacuum adsorption device or set up independently.

[0038] A wedge adjustment device 67 is also provided at the bottom of the welding conveyor line. The wedge adjustment device includes a movable wedge and a fixed wedge seat. The movable wedge and the fixed wedge seat are connected, and the adjustment protrusion on the movable wedge and the adjustment groove on the fixed wedge seat cooperate. By adjusting the relative position of the movable wedge and the fixed wedge seat, the horizontal adjustment of the welding conveyor line can be realized to ensure the flatness of the welding conveyor line and the transmission accuracy of the battery string. When replacing the welding belt, the movable wedge can be directly removed. Specific Implementation Example 1

[0040] As shown in Figure 3, only one welding belt is installed on the welding support frame.

[0041] As shown in Figure 5, a welding strip guide plate 68 is fixedly installed at the head of the welding support frame. A welding strip guide groove 69 is provided on the welding strip guide plate. The groove width X of the welding strip guide groove is set to be slightly larger than the width x′ of the welding strip, and the thickness Y of the welding strip guide groove is set to be slightly larger than the thickness y′ of the welding strip. When the battery string is transported on the welding belt, the welding strip below the battery cells will be located in the welding strip guide groove of the welding strip guide plate, which can prevent the welding strip from shifting. The welding strip guide groove can ensure the positional accuracy of the welding strip relative to the battery cells on the battery string. During the welding belt transport process, the welding strip guide plate remains fixed, and the guide groove does not need to be transported with the battery string.

[0042] The first end of the welding strip guide groove on the welding strip guide plate is connected to an inlet groove 610, which facilitates the welding strip entering the welding strip guide groove. Specific Implementation Example 2

[0044] As shown in Figure 4, the welding support frame is equipped with multiple welding belts.

[0045] At this point, the spacing x between two adjacent welding belts (i.e., the gap width x) is slightly larger than the width x′ of the welding strip, and the thickness y of each welding belt is slightly larger than the thickness y′ of the welding strip. When the battery string is transported on the welding belts, the welding strip under the battery cell will always be located in the gap 612 between the two welding belts, which can prevent the welding strip from shifting.

[0046] Multiple welding strip guide grooves corresponding to the gaps between the welding belts can also be set on the vacuum adsorption plate, so that the welding strip under the battery cell is located in the welding strip guide grooves and gaps, further preventing the welding strip from shifting.

[0047] To further guide and align the welding strip, a welding strip guide plate is fixedly installed at the head of the welding support frame. The welding strip guide plate is also provided with a welding strip guide groove, which corresponds to the gap. An inlet groove is connected to the first end of the welding strip guide groove on the welding strip guide plate. Specific Implementation Example 3

[0049] Only one welding belt is installed on the welding support frame.

[0050] A welding strip guide plate is fixedly installed at the head of the welding support frame. A welding strip guide groove is provided on the welding strip guide plate. In addition, a welding strip guide groove is also provided on the welding belt itself or on the welding belt and the vacuum adsorption plate. The welding strip guide groove on the welding belt corresponds to the welding strip guide groove on the welding strip guide plate. The welding strip guide grooves on the welding belt and the vacuum adsorption plate correspond to each other. An inlet groove is connected to the first end of the welding strip guide groove on the welding strip guide plate.

[0051] Specifically, the width X of the solder strip guide groove is set to be slightly larger than the width x′ of the solder strip, and the thickness Y of the solder strip guide groove is set to be slightly larger than the thickness y′ of the solder strip. When the battery string is transported on the welding belt, the solder strip below the battery cell will be located in the solder strip guide groove of the solder strip guide plate, which can prevent the solder strip from shifting. The solder strip guide groove can ensure the positional accuracy of the solder strip on the battery string relative to the battery cell.

[0052] The beneficial effects of the welding conveyor line of the high-speed string welding machine of the present invention are: it can transport multiple battery strings at the same time, and a vacuum adsorption and heating are set under the belt, which can not only ensure the transmission accuracy of the battery strings, but also facilitate the heating and welding of the battery strings, thereby increasing the production capacity of the equipment by several times, and also reducing the footprint of the equipment.

[0053] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A welding conveyor line for a high-speed string welding machine, characterized in that: include: A welding support frame, a welding belt, a welding belt driving device, and a vacuum adsorption structure. The welding belt driving device is arranged on the welding support frame and drives the welding belt to operate so as to convey the battery string and the welding belt. The vacuum adsorption structure is arranged under the welding belt to ensure that the position of the battery string does not change during the transmission process. The vacuum adsorption structure includes a vacuum adsorption plate and vacuum adsorption holes. The vacuum adsorption holes are distributed on the vacuum adsorption plate. The welding belt runs close to the vacuum adsorption plate. The welding belt is provided with air holes corresponding to the vacuum adsorption holes, so that the battery string is always in an adsorption state during the transmission process. The welding belt guide groove is provided on one or more of the welding belt, the vacuum adsorption plate or the fixed guide plate at the head of the welding belt, so that the welding belt under the battery cell is located in the welding belt guide groove to prevent the welding belt from deviating. The welding strip above the last battery cell in the battery string and the welding strip below the next battery cell are a whole strip, so that the front part of one welding strip is arranged above the previous battery cell and the rear part thereof is arranged below the next battery cell. A welding strip pressing block is arranged above the welding belt, and both ends of the welding strip pressing block are magnetically connected to the vacuum adsorption plate to press all the welding strips above the battery cell onto the battery cell to prevent the welding strips from deviating. A welding strip guide plate is fixedly arranged at the head of the welding support frame, and a welding strip guide groove is arranged on the welding strip guide plate. The head end of the welding strip guide groove on the welding strip guide plate is connected to an introduction groove; A wedge adjustment device is also provided at the bottom of the welding conveyor line, which includes a movable wedge and a fixed wedge seat. The movable wedge and the fixed wedge seat are connected, and the adjustment protrusion on the movable wedge and the adjustment groove on the fixed wedge seat cooperate with each other to achieve horizontal adjustment of the welding conveyor line by adjusting the relative position of the movable wedge and the fixed wedge seat.

2. The welding conveyor line of a high-speed string welding machine according to claim 1, characterized in that: The welding belt driving device comprises a welding driving wheel and a welding passive wheel for providing power transmission for the welding belt. The welding driving wheel and the welding passive wheel are assembled with a welding support frame through precision bearings, and the welding belt is wrapped around the welding driving wheel and the welding passive wheel.

3. The welding conveyor line of a high-speed string welding machine according to claim 1, characterized in that: A heating device is arranged below the welding belt or above the battery string to heat the battery string on the welding belt.

4. The welding conveyor line of a high-speed stringer according to claim 1, characterized in that: A welding belt is arranged on the welding support frame, and a welding belt guide groove is arranged on a welding belt guide plate located at the head of the welding support frame.

5. The welding conveyor line of a high-speed string welding machine according to claim 1, characterized in that: A welding belt is arranged on the welding support frame, and a welding belt guide groove is arranged on the welding belt, or on the welding belt and the vacuum adsorption plate.

6. The welding conveyor line of a high-speed string welding machine according to claim 1, characterized in that: The welding support frame is provided with a plurality of welding belts, and a gap allowing the welding belts to pass through is provided between two adjacent welding belts.

7. The welding conveyor line of a high-speed stringer according to claim 6, characterized in that: A plurality of welding belt guide grooves corresponding to the gaps between the welding belts are arranged on the vacuum adsorption plate.

Images