CN112490330B - Battery string production line and battery string production equipment - Google Patents
Battery string production line and battery string production equipment Download PDFInfo
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- CN112490330B CN112490330B CN202011500199.6A CN202011500199A CN112490330B CN 112490330 B CN112490330 B CN 112490330B CN 202011500199 A CN202011500199 A CN 202011500199A CN 112490330 B CN112490330 B CN 112490330B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/137—Batch treatment of the devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
本发明公开了一种电池串生产线及电池串生产设备，电池串生产线包括焊带提供装置、电池片提供装置、输送装置、预固定装置；焊带提供装置在输送装置上放置焊带组；电池串提供装置在输送装置上放置电池片；第i个电池片叠放于第i个焊带组的后半段上，第i+1个焊带组的前半段叠放于第i个电池片上，形成电池串；预固定装置设置为对叠放在输送装置上的电池串进行预固定；电池串生产线还包括背面膜叠放装置和正面膜叠放装置中的至少一种；其中，背面膜叠放装置设置为用于放置背面膜，使得预固定后的电池串的背面叠放背面膜；正面膜叠放装置设置为在预固定后的电池串的正面叠放正面膜。本发明提供的技术方案，可以高效率地将无主栅电池片串联成电池串。
The present invention discloses a battery string production line and battery string production equipment, the battery string production line includes a welding strip providing device, a battery cell providing device, a conveying device, and a pre-fixing device; the welding strip providing device places a welding strip group on the conveying device; the battery string providing device places a battery cell on the conveying device; the i-th battery cell is stacked on the rear half of the i-th welding strip group, and the front half of the i+1-th welding strip group is stacked on the i-th battery cell to form a battery string; the pre-fixing device is configured to pre-fix the battery string stacked on the conveying device; the battery string production line also includes at least one of a back film stacking device and a front film stacking device; wherein the back film stacking device is configured to place a back film so that the back of the pre-fixed battery string is stacked with the back film; the front film stacking device is configured to stack the front film on the front of the pre-fixed battery string. The technical solution provided by the present invention can efficiently connect busbar-free battery cells in series into a battery string.
Description
Technical Field
The invention relates to the technical field of self-production of photovoltaic cells, in particular to a battery string production line and battery string production equipment.
Background
The traditional solar cell leads the photo-generated current in the cell to the outside of the cell through the grid line on the traditional solar cell, and the traditional grid line is mostly printed by silver paste in consideration of final conductivity, and the solar cell is divided into three main grids, four main grids and multiple main grids according to different printing processes.
For the three-main grid, four-main grid and multi-main grid solar cell, a plurality of welding strips are welded with each main grid line of the solar cell through soldering flux at present to obtain a cell string formed by connecting a plurality of cell in series, and finally, the conversion from light energy to electric energy is realized. However, the battery string obtained by welding the welding strip and the main grid line has larger shading area, influences photoelectric conversion efficiency and has higher silver paste cost.
In order to overcome the problems, the manufacturing process of the solar cell without the main grid crystalline silicon, which is used for forming a series string of cell sheets without the main grid, adopts the structure that upper and lower films are respectively arranged on two sides of a cell string formed by stacking a welding strip and the cell sheets.
Therefore, it is desirable to provide a production facility that is capable of connecting cells without a primary grid in series into a battery string.
Disclosure of Invention
The invention aims to provide a battery string production line and battery string production equipment, which can efficiently connect battery sheets without main grids in series to form a battery string.
In order to achieve the above purpose, the battery string production line provided by the invention comprises a welding strip providing device, a battery piece providing device, a conveying device and a pre-fixing device, wherein,
The welding strip providing device is used for placing welding strip groups on the conveying device, wherein each welding strip group comprises a plurality of parallel welding strip sections;
The battery string providing device is used for placing battery pieces on the conveying device, wherein the ith battery piece is stacked on the second half section of the ith welding strip group, the first half section of the (i+1) th welding strip group is stacked on the ith battery piece to form a battery string, and i is any natural number larger than 0;
the pre-fixing device is used for pre-fixing the battery strings stacked on the conveying device, so that the stacked battery pieces and the welding strip groups are partially or completely fixedly connected together;
The battery string production line also comprises at least one of a back surface film stacking device and a front surface film stacking device, wherein,
The back film stacking device is used for placing a back film, so that the back of the pre-fixed battery string stacks the back film;
The front face film stacking device is arranged to stack the front face film on the front face of the battery string after being pre-fixed.
Optionally, the battery string production line comprises the back film stacking device, the back film stacking device comprises a back film conveyor and a film strip roll wound with a strip-shaped back film, wherein the back film conveyor is arranged at the output end of the conveying device, and a back film conveying belt running in a direction far away from the conveying device is arranged on the back film conveyor;
the back film released by the film strip roll is laid on the back film conveying belt from one end, close to the conveying device, of the back film conveyor and moves along with the back film conveying belt;
The battery strings on the conveying device are conveyed from the output end of the conveying device to the back surface film on the back surface film conveyor after being pre-fixed, and the battery strings are gradually moved to the back surface film in the process that the back surface film conveyor conveys the back surface film and the battery strings, so that the back surface film is stacked on the back surface of the battery strings.
Optionally, the back film conveyor further comprises a bottom plate, the upper layer part of the back film conveyor belt is supported on the bottom plate, adsorption holes are formed in the back film conveyor belt and the bottom plate, and the back film is adsorbed on the back film conveyor belt through the adsorption holes.
Optionally, the back surface film conveyor further comprises a heating mechanism for heating the bottom plate, and the back surface film is fixed on the battery string by heating the bottom plate by the heating mechanism.
Optionally, the welding strip providing device includes a plurality of welding strip coils, welding strip hold-down mechanisms, welding strip cutting mechanisms and welding strip traction mechanisms, the welding strip coils the welding strip hold-down mechanisms the welding strip cutting mechanisms reaches the welding strip traction mechanisms arranges along the extending direction of welding strip in proper order, the welding strip traction mechanisms pull the welding strip to pass the welding strip hold-down mechanisms reaches the welding strip cutting mechanisms to preset positions, just when the welding strip hold-down mechanisms hold-down the welding strip, the welding strip cutting mechanisms cut the welding strip to form the welding strip group including a plurality of welding strip sections, the welding strip group that the welding strip traction mechanisms centre gripping was cut is placed on the conveyor.
Optionally, the welding strip providing device further includes a welding strip pressing mechanism, and the welding strip pressing mechanism is disposed between the welding strip pressing mechanism and the welding strip cutting mechanism, and is used for pressing the welding strip set to be cut, so that a bending structure is formed at a position between two adjacent battery pieces when the welding strip set and the battery pieces are stacked.
Optionally, the battery string production line further includes a welding strip guiding device located at one end of the conveying device, which is close to the welding strip providing device, and the welding strip guiding device guides the welding strip when the welding strip providing device provides the welding strip on the conveying device.
Optionally, the conveying device comprises a conveying belt and a conveying belt driving mechanism for driving the conveying belt to run, wherein a first end of the conveying belt is arranged to be capable of extending in a stepping mode along a direction away from a second end and capable of returning in a stepping mode towards the second end, the conveying belt extends for a preset length in each stepping mode along the direction away from the second end, an empty feeding station is formed at the first end of the conveying belt, and a battery piece and a welding belt group are stacked at the feeding station;
the weld bead guide is configured to move in synchronization with the first end of the conveyor belt.
Optionally, the battery string production line is provided with the front face film stacking device, and the front face film stacking device is configured to stack a plurality of front face films on the battery string after being pre-fixed, wherein the ith front face film is stacked on the first half section of the (i+1) th welding strip group.
Optionally, the battery string production line is provided with the front film stacking device, and the front film stacking device is configured to stack the strip-shaped front film extending along the length direction of the battery string on the pre-fixed battery string, and the strip-shaped front film extends and is laid on at least two welding strips on the battery string.
Optionally, the battery string production line further includes a secondary hot press device, and the secondary hot press device performs hot press on the battery string stacked with the front surface film and the back surface film, so that the front surface film and the back surface film are hot pressed on the battery string.
Optionally, the secondary hot pressing device is configured to hot press the battery string above the battery string, the battery string stacked with the positive film is conveyed to a position below the secondary hot pressing device, and the secondary hot pressing device performs hot pressing on the battery string;
Or the secondary hot pressing device is arranged on the front film stacking device, and when the front film stacking device releases the front film on the battery string, the released front film is hot pressed through the secondary hot pressing device.
Optionally, the battery string production line further includes a string cutting device configured to divide the battery string, in which the front surface film and the rear surface film are stacked, into a plurality of independent battery strings of a predetermined length.
According to another aspect of the present invention, there is also provided a battery string production apparatus including at least two battery string production lines as described above, the at least two battery string production lines being arranged in parallel.
According to the technical scheme provided by the invention, after the battery pieces and the welding strip groups are sequentially stacked to form the battery string, the front surface film is stacked on the front surface of the battery string or the back surface film is stacked on the back surface of the battery string, so that the production process for serially connecting the battery pieces without the main grid is realized, and the production efficiency is high.
Drawings
Fig. 1 is a schematic view of a battery string production line according to an embodiment of the present invention;
Fig. 2 to 6 are schematic views showing a stack of a solder ribbon set and a battery piece on a conveying device of a battery string production line according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of placement of a positive film on a string of cells stacked on a conveyor;
FIG. 8 is an enlarged view of FIG. 7 at E;
FIG. 9 is a schematic illustration of a back side film attached to the back side of a battery string;
FIG. 10 is an enlarged view of F in FIG. 9;
fig. 11 is a schematic structural view of the conveying device.
Description of the reference numerals
1-Welding strip providing device, 11-welding strip coil, 12-welding strip pressing device, 13-welding strip pressing device, 14-welding strip cutting device, 2-back surface film laying device, 21-film coil wound with strip-shaped back surface film A, 22-back surface film conveyor, 3-conveying device, 31-conveying belt, 32-base, 33-stepping platform, 34-fixed platform, 35-conveying belt driving mechanism, 351-driving roller, 352-first guide roller, 353-second guide roller, 354-tensioning roller, 4-hot pressing device, 5-welding strip guide device, 7-film coil wound with front surface film D and 8-burst cutting device.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the aspects of the disclosure may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may also be otherwise positioned, such as rotated 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.
The invention provides a battery string production line, which comprises a welding strip providing device 1, a battery piece providing device, a conveying device 3 and a pre-fixing device 4, wherein,
The welding strip supply device 1 is used for placing welding strip groups B on the conveying device 3, wherein each welding strip group B comprises a plurality of parallel welding strip sections;
The battery string providing device is used for placing battery pieces C on the conveying device 3, wherein the ith battery piece C is stacked on the rear half section of the ith welding strip group B, the front half section of the (i+1) th welding strip group B is stacked on the ith battery piece C to form a battery string, and i is any natural number larger than 0;
The pre-fixing device 4 is arranged to pre-fix the battery strings stacked on the conveying device 3, so that the stacked battery pieces C and the welding strip groups B are partially or completely fixedly connected together, and the welding strip groups B do not deviate relative to the battery pieces C;
the battery string production line further comprises at least one of a back side film stacking device 2 and a front side film stacking device, wherein,
The back surface film stacking device 2 is configured to place the back surface film a so that the back surface of the pre-fixed battery string stacks the back surface film a;
The front face film stacking device is arranged to stack the front face film D on the front face of the pre-fixed battery string.
According to the technical scheme provided by the invention, after the battery pieces and the welding strip groups are sequentially stacked to form the battery string, the front surface film is stacked on the front surface of the battery string or the back surface film is stacked on the back surface of the battery string, so that the production process for serially connecting the battery pieces without the main grid is realized, and the production efficiency is high.
In one embodiment of the present invention, as shown in fig. 1, the solder strip providing apparatus 1 includes a plurality of solder strip coils 11, a solder strip pressing mechanism 12, a solder strip cutting mechanism 14, and a solder strip pulling mechanism (not shown in fig. 1), the solder strip coils 11, the solder strip pressing mechanism 12, the solder strip cutting mechanism 14, and the solder strip pulling mechanism are sequentially arranged along the extending direction of the solder strip, the solder strip pulling mechanism pulls the solder strip to pass through the solder strip pressing mechanism 12 and the solder strip cutting mechanism 14 to a predetermined position, and when the solder strip pressing mechanism 12 presses the solder strip, the solder strip cutting mechanism 14 cuts the solder strip to form a solder strip group B including a plurality of solder strip sections, and the solder strip pulling mechanism clamps the cut solder strip group B to be placed on the conveying apparatus 3.
Of course, it is understood that the solder strip providing device 1 may also be a device for directly providing solder strip sets.
Optionally, the welding strip providing device 1 further includes a welding strip pressing mechanism 13, where the welding strip pressing mechanism 13 is disposed between the welding strip pressing mechanism 12 and the welding strip cutting mechanism 14, and is used to press the welding strip set to be cut, so that a bending structure is formed at a position between two adjacent battery pieces when the welding strip set and the battery pieces are stacked, the welding strip set after bending forms a step shape between a second half section and a first half section, and the second half section is located below the step shape, so that when the welding strip set is stacked with the battery pieces, the first half section of the welding strip is suitable for being stacked on the previous battery piece, and the battery pieces are stacked above the second half section.
The welding strip providing device 1 provides a welding strip group, which comprises the specific processes that a welding strip traction device clamps a plurality of welding strips in parallel from a welding strip coil 11, then the welding strips are sequentially pulled to pass through a welding strip pressing device 12, a welding strip pressing device 13 and a welding strip cutting device 14, when the welding strips are pulled to a preset position, the welding strip pressing device 13 presses the welding strips to form a bending structure, when the welding strip pressing device 12 presses the welding strips, the welding strip cutting device 14 cuts the welding strips to form a welding strip group B with the bending structure at the middle position, and then the welding strip traction device pulls the cut welding strip group B to move to a conveying device 3 for laying.
The battery string production line further includes a solder strip guide 5 at one end of the conveyor 3 near the solder strip supply device 1, the solder strip guide 5 guiding the solder strip when the solder strip supply device 1 supplies the solder strip onto the conveyor 3.
In the embodiment, the conveying device 3 comprises a conveying belt and a conveying belt driving mechanism for driving the conveying belt to run, wherein a first end of the conveying belt can be arranged to be capable of extending in a stepping mode along a direction away from a second end and returning in a stepping mode towards the second end, the conveying belt extends for a preset length in each stepping mode along the direction away from the second end, an empty feeding station is formed at the first end of the conveying belt, and a battery piece and a welding belt group are stacked at the feeding station, wherein the first end is one end of the conveying belt close to the welding belt providing device 1, and the second end is one end away from the first end;
the weld bead guide 5 is arranged to move synchronously with the first end of the conveyor belt.
Specifically, as shown in fig. 11, the conveying device 3 includes a conveying belt 31, and further includes a base 32, a fixed platform 34, a stepping platform 33, and a platform moving mechanism for driving the stepping platform 33 to move, wherein the fixed platform 34 is fixedly connected to the base 32, the stepping platform 33 is slidably connected to the base 32, and the platform moving mechanism can drive the stepping platform 33 to move in a stepping manner towards or away from the fixed platform 34 in a conveying direction of the conveying belt 31 (the fixed platform 34 is close to a second end of the conveying belt relative to the stepping platform 33);
The conveying belt 31 is arranged on the fixed platform 34 and the stepping platform 33, when the stepping platform 33 moves away from the fixed platform 34, the conveying belt 31 moves from bottom to top at the end part of the stepping platform 33 away from the fixed platform 34, so that the upper surface of the conveying belt 31 extends along with the stepping platform 33 in a stepping way in a direction away from the fixed platform 34, namely, the conveying belt 31 extends towards the first end;
The ribbon guide 5 is arranged to move synchronously with the step platform 33 such that the ribbon guide 5 is synchronized with the first end of the conveyor 31 for guiding the ribbon.
Wherein the conveyor belt driving mechanism 35 that drives the conveyor belt 31 to run includes a driving roller 351, a first guide roller 352, a second guide roller 353, and a tension roller 354;
the driving roller 351 is disposed at an end of the fixed platform 34 far from the stepping platform 33, and is driven to rotate by a driving motor, the first guide roller 352 is disposed at an end of the stepping platform 33 far from the fixed platform 34, and the first guide roller 352 and the second guide roller 353 are mounted on the stepping platform 33, the tensioning roller 354 is disposed below the first guide roller 352 and the second guide roller 353, and is configured to be movable back and forth along a conveying direction of the conveying belt 31 to be adjusted to tension the conveying belt 31, specifically, a slide rail extending along the conveying direction of the conveying belt 31 may be disposed on the base 32, the tensioning roller 354 is driven by a tensioning roller driving cylinder to move back and forth along the slide rail, the conveying belt 31 is sequentially wound on the driving roller 351, the first guide roller 352, the second guide roller 353 and the tensioning roller 354, wherein the second guide roller 353 is disposed on a conveying surface of the conveying belt 31, and when the stepping platform 33 moves far from the fixed platform 34, the first guide roller 352 and the second guide roller 353 moves along with the stepping platform 33 and extends from the lower side to guide the conveying belt 31, so that the conveying belt 31 moves upward toward the first end 31 when the stepping platform 33 moves toward the first end.
In this embodiment, a specific process of stacking the solder ribbon set B and the battery piece C on the conveyor 3 in order is shown in fig. 2 to 6.
First, as shown in fig. 2, the solder ribbon pulling device of the solder ribbon supply device 1 places a first solder ribbon set B cut on the conveying device 3, and the battery sheet supply device stacks a first battery sheet C on the second half of the solder ribbon set;
As shown in fig. 3, the conveyor belt of the conveyor device 3 is stepped by a predetermined length toward the welding strip supply device 1, and an empty feeding station is formed at the first end of the conveyor device 3;
As shown in fig. 4, the solder strip providing device 1 places a second solder strip group B at the feeding station, the first half section of the second solder strip group B is stacked on the first battery piece C, and the battery piece providing device places a second battery piece C at the feeding station, the second battery piece C is stacked on the second half section of the second solder strip group B;
As shown in fig. 5, the conveyor belt of the conveyor device 3 is stepped towards the welding strip providing device 1 by a preset length, an empty feeding station is formed at the first end of the conveyor device, and the welding strip group B and the battery piece C are continuously stacked at the feeding station;
and so on, a battery string is obtained as shown in fig. 6, in which a plurality of solder bumps B and battery pieces C are stacked one on another.
Wherein, after stacking preset number of welding band groups and battery pieces on the conveying device 3, the conveying device conveys the stacked welding band groups and battery pieces towards the direction of the second end.
In the present embodiment, the pre-fixing device for pre-fixing the battery strings formed by the stacked battery pieces C and the solder ribbon groups B is a heat pressing device 4 located above the conveying device 3. The hot press device 4 fixes the stacked solder set B and the battery piece C while conveying the stacked solder set and battery piece to a hot press station located below the hot press device 4. Of course, it is understood that the pre-fixing means for fixing the stacked battery cells and the solder set together is not limited to the above-described thermo-compression device 4, but may be, for example, an adhesive or the like that bonds the solder set and the battery cells together.
In this embodiment, in order to stack the back surface film a on the back surface of the battery string formed by stacking the battery sheet C and the welding strip group B, as shown in fig. 1, the battery string production line includes a back surface film stacking device 2, the back surface film stacking device 2 includes a back surface film conveyor 22 and a film roll 21 wound with the band-shaped back surface film a, wherein the back surface film conveyor 22 is disposed at the output end of the conveying device 3, and the back surface film conveyor 22 is provided with a back surface film conveying belt running in a direction away from the conveying device 3;
The back film a released from the film roll 21 wound with the band-shaped back film a is laid on the back film conveyor belt from the end of the back film conveyor 22 near the conveyor device 3 and moves with the back film conveyor belt;
After the battery strings on the conveying device 3 are pre-fixed, the battery strings are conveyed from the output end of the conveying device 3 to the back film A on the back film conveyor 22, and in the process that the back film conveyor 22 conveys the back film A and the battery strings, the battery strings are gradually moved to the back film A, so that the back film A is stacked on the back of the battery strings.
Optionally, the back film conveyor 22 further includes a bottom plate, the upper layer portion of the back film conveyor belt is supported on the bottom plate, the back film conveyor belt and the bottom plate are both provided with adsorption holes, and the back film a is adsorbed on the back film conveyor belt by adsorption holes to move together with the back film conveyor belt. Of course, the end of the rear film a can also be moved with the rear film conveyor belt by pressing it against the rear film conveyor belt by means of a pressing device.
Optionally, the back film conveyor 22 further includes a heating mechanism that heats the base plate, and the back film a is fixed to the battery string by heating the base plate by the heating mechanism.
In this embodiment, the battery string production line is provided with a front face film stacking device configured to stack a plurality of front face films D on the pre-fixed battery string, wherein the i-th front face film D is stacked on the front half section of the i+1th welding set B.
Or the front film stacking device is arranged to stack a strip-shaped front film D extending along the length direction of the battery string on the pre-fixed battery string, and the strip-shaped front film D is laid on at least two welding strips B in an extending way on the battery string.
As shown in fig. 1, the front film stacking apparatus may include a film roll 7 around which a front film D is wound, a tape-shaped front film D is drawn from the film roll 7 around which the front film D is wound, and then cut into a plurality of front films D suitable for stacking on a welding set B, or the front film D is drawn from the film roll 7 around which the front film D is wound and stacked on a battery string in a length direction of the battery string, the length of the front film D extending at least to two welding sets B.
The battery string production line further comprises a secondary hot pressing device, and the secondary hot pressing device is used for hot pressing the battery strings stacked with the front face film D and the back face film A, so that the front face film D and the back face film A are hot pressed on the battery strings.
The secondary hot pressing device is arranged above the battery strings to perform hot pressing on the battery strings, specifically, the secondary hot pressing device can be arranged above the back film conveyor 22, and when the battery strings of the stacked front film D and the back film A are conveyed to the lower side of the secondary hot pressing device, the secondary hot pressing device performs hot pressing on the battery strings, so that the stacked back film A, the welding strip group B, the battery piece C and the front film D are fixedly connected together.
Or the front surface film stacking device is provided with a secondary hot pressing device, and when the front surface film stacking device releases the front surface film D on the battery string, the released front surface film D is hot pressed through the secondary hot pressing device.
As shown in fig. 1, the battery string production line further includes a string-cutting device 8, and the string-cutting device 8 is configured to divide the entire battery string, on which the front surface film a and the rear surface film D are stacked, into a plurality of independent battery strings of a predetermined length.
The specific process of stacking the rear surface film a and the front surface film D on the battery string formed by stacking the solder tape set B and the battery piece C will be described below with reference to fig. 6 to 10.
As shown in fig. 6, the welding strip group B and the battery piece C are sequentially stacked to form a battery string, and are conveyed to the hot pressing device 4 for hot pressing and fixing;
As shown in fig. 7 and 8, the front face film D is stacked on the front face of the battery string (i.e., above the battery string) hot-pressed by the hot-pressing device 4, and in this embodiment, the i-th front face film D is stacked on the front half of the i+1-th welding set;
As shown in fig. 9 and 10, the back film a drawn from the film roll 21 around which the band-shaped back film a is wound is laid on the back film conveyor from the end of the back film conveyor 22 near the conveyor 3, and after the battery string is gradually conveyed from the conveyor 3 onto the back film conveyor 22, the battery string is stacked on the back film a of the back film conveyor 22, and the back film a is stacked on the back surface (i.e., the lower surface) of the battery string while the back film conveyor moves in a direction away from the conveyor 3 with the back film a and the battery string on the back film a together.
When the rear film conveyor 22 conveys the battery string stacked with the rear film a and the front film D to the lower side of the secondary heat press device (the secondary heat press device is located above the rear film conveyor 22), the secondary heat press device heat presses the battery string so that the stacked rear film a, the solder set B, the battery piece C, and the front film D are fixed together.
Of course, after the solder strip group B and the battery string C are fixed by the hot press device 4, the back surface film a may also be fixed on the battery string by heating the bottom plate below the back surface film conveyor belt, and the front surface film D may be hot pressed on the battery string by the front surface film stacking device when releasing the front surface film.
It will be appreciated by those skilled in the art that the battery string production line provided by the present invention is not limited to the above production method, and that the front surface film D may be stacked on the battery string output by the rear surface film conveyor 22, for example, after the rear surface film a is stacked by the rear surface film conveyor 22. Or after the front surface film D is stacked on the front surface, the battery string is turned over, and the rear surface film A is stacked on the other surface of the battery string.
It is also understood that the battery string production line provided by the present invention may also stack only the front surface film D or only the rear surface film a on the battery string formed by stacking the battery pieces and the welding tape set.
According to another aspect of the present invention, there is also provided a battery string production apparatus including at least two battery string production lines as above, the at least two battery string production lines being arranged in parallel.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. A battery string production line is characterized by comprising a welding strip providing device, a battery piece providing device, a conveying device and a pre-fixing device, wherein the welding strip providing device comprises a welding strip feeding device, a welding strip feeding device and a welding strip feeding device,
The welding strip providing device is used for placing welding strip groups on the conveying device, wherein each welding strip group comprises a plurality of parallel welding strip sections, the welding strip providing device comprises a plurality of welding strip coils, a welding strip compressing mechanism, a welding strip cutting mechanism and a welding strip traction mechanism, the welding strip coils, the welding strip compressing mechanism, the welding strip cutting mechanism and the welding strip traction mechanism are sequentially arranged along the extending direction of the welding strip, the welding strip traction mechanism is used for dragging the welding strip to pass through the welding strip compressing mechanism and the welding strip cutting mechanism to a preset position, when the welding strip compressing mechanism compresses the welding strip, the welding strip cutting mechanism is used for cutting the welding strip to form the welding strip group comprising a plurality of welding strip sections, and the welding strip cutting mechanism is used for clamping the welding strip groups to be cut and is placed on the conveying device;
The battery string providing device is used for placing battery pieces on the conveying device, wherein the ith battery piece is stacked on the second half section of the ith welding strip group, the first half section of the (i+1) th welding strip group is stacked on the ith battery piece to form a battery string, and i is any natural number larger than 0;
the pre-fixing device is used for pre-fixing the battery strings stacked on the conveying device, so that the stacked battery pieces and the welding strip groups are partially or completely fixedly connected together;
The battery string production line also comprises at least one of a back surface film stacking device and a front surface film stacking device, wherein,
The back film stacking device is used for placing a back film, so that the back of the pre-fixed battery string stacks the back film;
the front face film stacking device is arranged for stacking the front face film on the front face of the pre-fixed battery string;
the battery string production line further comprises a welding strip guiding device positioned at one end of the conveying device, which is close to the welding strip providing device, and the welding strip guiding device guides the welding strip when the welding strip providing device provides the welding strip on the conveying device;
The front face film stacking device is arranged to stack a plurality of front face films on the pre-fixed battery strings, wherein the ith front face film is stacked on the front half section of the (i+1) th welding band group, or the front face film stacking device is arranged to stack the strip-shaped front face films extending along the length direction of the battery strings on the pre-fixed battery strings, and the strip-shaped front face films extend and are laid on at least two welding band groups on the battery strings.
2. The battery string production line according to claim 1, comprising the back film stacking device including a back film conveyor and a film roll wound with a band-shaped back film, wherein the back film conveyor is provided at an output end of the conveying device, and a back film conveyor belt running in a direction away from the conveying device is provided on the back film conveyor;
the back film released by the film strip roll is laid on the back film conveying belt from one end, close to the conveying device, of the back film conveyor and moves along with the back film conveying belt;
The battery strings on the conveying device are conveyed from the output end of the conveying device to the back surface film on the back surface film conveyor after being pre-fixed, and the battery strings are gradually moved to the back surface film in the process that the back surface film conveyor conveys the back surface film and the battery strings, so that the back surface film is stacked on the back surface of the battery strings.
3. The battery string production line according to claim 2, wherein the back film conveyor further comprises a bottom plate on which an upper layer portion of the back film conveyor belt is supported, adsorption holes being provided in both the back film conveyor belt and the bottom plate, and the back film being adsorbed on the back film conveyor belt by the adsorption holes.
4. The battery string production line according to claim 3, wherein the back surface film conveyor further comprises a heating mechanism that heats the base plate, and the back surface film is fixed on the battery string by heating the base plate by the heating mechanism.
5. The battery string production line according to claim 1, wherein the solder strip providing device further comprises a solder strip pressing mechanism, the solder strip pressing mechanism is arranged between the solder strip pressing mechanism and the solder strip cutting mechanism and is used for pressing a solder strip group to be cut so as to form a bending structure at a position between two adjacent battery pieces when the solder strip group is stacked with the battery pieces.
6. The battery string production line according to claim 1, wherein the conveying device comprises a conveying belt and a conveying belt driving mechanism for driving the conveying belt to run, a first end of the conveying belt is arranged to be capable of extending in a stepping mode in a direction away from a second end and capable of returning in a stepping mode towards the second end, the conveying belt extends for a preset length in each stepping mode in the direction away from the second end, an empty feeding station is formed at the first end of the conveying belt, and battery sheets and welding strips are stacked at the feeding station, wherein the first end is the end, close to the welding strip providing device, of the conveying belt, and the second end is the end away from the first end;
the weld bead guide is configured to move in synchronization with the first end of the conveyor belt.
7. The battery string production line according to claim 1, wherein,
The battery string production line further comprises a secondary hot pressing device, wherein the secondary hot pressing device is used for hot pressing the battery strings stacked with the front surface film and the back surface film, so that the front surface film and the back surface film are hot pressed on the battery strings.
8. The battery string production line according to claim 7, wherein the secondary heat pressing device is configured to heat-press the battery string above the battery string, the battery string stacked with the positive film being conveyed to below the secondary heat pressing device, the battery string being heat-pressed by the secondary heat pressing device;
Or the secondary hot pressing device is arranged on the front film stacking device, and when the front film stacking device releases the front film on the battery string, the released front film is hot pressed through the secondary hot pressing device.
9. The battery string production line according to any one of claims 1 to 6, further comprising a string-dividing and cutting device configured to divide the battery string as a whole, on which the front surface film and the rear surface film are stacked, into a plurality of independent battery strings of a predetermined length.
10. Battery string production device, characterized in that it comprises at least two battery string production lines according to any of claims 1-9, which are arranged in parallel.
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| CN115588711B (en) * | 2021-07-05 | 2026-02-17 | 苏州沃特维自动化系统有限公司 | IBC photovoltaic cell cluster manufacturing device and photovoltaic module production facility |
| CN115588705A (en) * | 2021-07-05 | 2023-01-10 | 苏州沃特维自动化系统有限公司 | Photovoltaic cell string manufacturing device and photovoltaic module production equipment |
| CN115588710A (en) * | 2021-07-05 | 2023-01-10 | 苏州沃特维自动化系统有限公司 | Photovoltaic cell string manufacturing device with laminated tile structure and photovoltaic module production equipment |
| CN114744080B (en) * | 2022-06-10 | 2022-10-21 | 苏州小牛自动化设备有限公司 | A battery string production method and battery string laying equipment |
| CN115036392A (en) * | 2022-06-28 | 2022-09-09 | 无锡奥特维科技股份有限公司 | Welding strip film pasting device, film pasting method and battery string production equipment |
| CN115224158A (en) * | 2022-06-30 | 2022-10-21 | 无锡奥特维科技股份有限公司 | A battery string sticking film device and film sticking method |
| CN115224161B (en) * | 2022-08-22 | 2024-01-30 | 苏州迈展自动化科技有限公司 | A new type of busbarless solar photovoltaic module manufacturing method |
| CN115224162A (en) * | 2022-08-22 | 2022-10-21 | 苏州迈展自动化科技有限公司 | A photovoltaic cell string manufacturing equipment |
| CN115207166B (en) * | 2022-09-15 | 2023-02-14 | 苏州小牛自动化设备有限公司 | A battery string manufacturing method and string manufacturing equipment |
| CN115377251B (en) * | 2022-10-21 | 2023-03-24 | 苏州小牛自动化设备有限公司 | Production equipment for film-coated battery string |
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| CN110783429B (en) * | 2019-11-05 | 2021-07-16 | 江阴德龙能源设备有限公司 | High-efficiency seamless solar cell module string welding method |
| CN111152037A (en) * | 2020-01-20 | 2020-05-15 | 无锡奥特维科技股份有限公司 | Cell String Welding Equipment |
| CN111599891B (en) * | 2020-05-13 | 2024-08-23 | 无锡奥特维科技股份有限公司 | Stacking conveying equipment and stacking conveying method |
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