CN115763329A - Battery string production equipment and production method - Google Patents
Battery string production equipment and production method Download PDFInfo
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- CN115763329A CN115763329A CN202211434175.4A CN202211434175A CN115763329A CN 115763329 A CN115763329 A CN 115763329A CN 202211434175 A CN202211434175 A CN 202211434175A CN 115763329 A CN115763329 A CN 115763329A
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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
Abstract
The application discloses battery cluster production facility, including back membrane strip feed portion, battery piece feed portion, weld and take feed portion, surface membrane strip feed assembly and conveying part, wherein: the back film strip feeding part is used for placing a plurality of parallel back film strips on the conveying surface of the conveying part, and the conveying surface of the conveying part drives the back film strips to synchronously advance; the welding strip feeding part is used for providing a welding strip group to the conveying part, and welding strips in the welding strip group and the back film strips are placed in a one-to-one correspondence mode; the battery piece feeding part is used for supplying battery pieces to the conveying part; the surface film strip feeding assembly is used for supplying the surface film strips to the battery piece so as to fix the welding strip group on the front surface of the battery piece. The welding strip on the back of the battery piece is fixed on the battery piece by the aid of the back film strip feeding portion, the conveying portion drives the back film strip to synchronously advance, continuous feeding of the back film strip is achieved, the front welding strip of the battery piece is fixed on the battery piece by the aid of the surface film strip feeding assembly, and accordingly production of battery strings is completed.
Description
Technical Field
The invention belongs to the technical field of photovoltaic equipment, and relates to a battery string production device and a battery string production method.
Background
Photovoltaic is an important clean energy source, and is an important energy field and technical direction in the world; the photovoltaic cell assembly is a core component of photovoltaic power generation, and the crystalline silicon cell assembly accounts for more than 95% of the market. The cost of the crystalline silicon chip and the silver paste occupies a great proportion in the crystalline silicon assembly, and the reduction of the silver paste amount and the silicon chip amount is crucial to the reduction of the comprehensive cost of the assembly, the battery power cost and the promotion of the photovoltaic market application.
The thickness of a silicon wafer for a mainstream photovoltaic cell in the market is about 170-180 um, silver (or silver copper) slurry needs to be printed on the surface of the cell during the cell processing process of the crystalline silicon wafer, and after the crystalline silicon wafer is dried or sintered, the photoproduction current in the cell is led out through the metal slurry. In a mainstream photovoltaic module, products among battery pieces are interconnected through a metal welding strip, a tin-lead alloy is arranged on the surface of the welding strip, the welding strip and the battery pieces are welded together at high temperature by using a special infrared welding device, the typical welding temperature is 220-350 ℃, and the tin-lead alloy is melted at high temperature to fuse the welding strip and silver slurry on the surface of the battery. The traditional battery pack interconnection scheme adopts a high-temperature process, so that stress warping of a silicon wafer is easy to crack and break, and flaking is difficult to realize; meanwhile, in order to realize effective welding, a large amount of silver needs to be used below the welding strip as a main grid electrode, and the large amount of silver main grids bring high silver paste and battery cost.
There is also smart wire technology in the prior art, in the technology, the surface of the battery is also free of main grid lines, the battery pieces are interconnected through low-temperature welding strips, but no infrared welding process is carried out, wherein the metal welding strips adopt a special packaging adhesive film to fix the welding strips on the adhesive film in advance; and a part of the welding strip is embedded into the adhesive film, a part of the welding strip is exposed outside, the exposed part is in contact with the battery, and the part of the welding strip exposed out of the adhesive film in the laminating process is fused with the battery to realize interconnection. In the scheme, a special adhesive film with high price is required to be used for fixing the welding strip, and the problem of high cost also exists.
Disclosure of Invention
In order to solve the problems in the related art, the application provides a battery string production device, a back film strip is paved in advance, then a welding strip and a battery piece are stacked on the back film strip, the welding strip is fixed on the battery piece through a fixing film, and the battery string production is realized through low-temperature heating of the back film strip and the fixing film. Meanwhile, the battery string production method is provided, and low-temperature welding production of the battery string can be realized.
The application provides a battery cluster production facility, this battery cluster production facility include back membrane strip feed portion, battery piece feed portion, weld and take feed portion, surface membrane strip feed assembly and conveying part, wherein: the back film strip feeding part is used for placing a plurality of parallel back film strips on the conveying surface of the conveying part, and the conveying surface of the conveying part drives the back film strips to synchronously advance; the welding strip feeding part is used for providing a welding strip group to the conveying part, and welding strips in the welding strip group and the back film strips are placed in a one-to-one correspondence mode; the battery piece feeding part is used for supplying battery pieces to the conveying part; the surface film strip feeding assembly is used for providing a surface film strip for a battery piece, the battery piece and the welding strip group are stacked into a battery string by the welding strip feeding portion and the battery piece feeding portion, so that the ith battery piece is laid on the rear half section of the ith welding strip group, the front half section of the (i + 1) th welding strip group is laid on the ith battery piece, the front half section of the (i + 1) th welding strip group is fixed on the ith battery piece by the surface film strip, the rear half section of the ith welding strip group is fixed on the i battery piece by the back film strip, and i is any natural number greater than 0.
The welding strip of the back of the battery piece is fixed on the battery piece by the aid of the back film strip feeding portion, the back film strip is driven by the conveying portion to synchronously advance to achieve continuous feeding of the back film strip, the front welding strip of the battery piece is fixed on the battery piece by the aid of the surface film strip feeding assembly, the battery piece is fixed with the welding strip by the aid of the back film strip feeding portion and the surface film strip feeding assembly, and production of battery strings is completed.
Preferably, the surface film strip feeding assembly comprises a fixed film strip feeding part, the fixed film strip feeding part is used for providing at least two fixed film strips for the cell, and the fixed film strips and the welding strip groups are arranged in a crossed manner; the at least one fixing film strip is used for fixing the welding strip group at the first end of the front side of the battery piece; and at least one fixing film strip is used for fixing the welding strip group at the second end of the front surface of the battery piece.
The welding strip group is positioned on the front of the battery piece by the aid of the fixed film strip feeding portion, and a film strip is arranged in a crossed mode with the welding strip group to fix a plurality of welding strips on the front of the battery piece.
Preferably, the battery piece feeding part further comprises a tool carrying part, the battery piece feeding part is used for carrying the battery piece and the tool at the same time so that the ith battery piece is laid on the back half section of the ith welding strip group, and the (i-1) th tool compresses the front half section of the ith welding strip group above the (i-1) th battery piece; or the battery string production equipment further comprises a tool carrying device, the tool carrying device is used for providing tools for the conveying part, and the tool is used for pressing the front half section of the ith welding strip group above the (i-1) th battery piece; wherein i is any natural number greater than 0.
The feeding of the tool is realized through the tool carrying part or through the independently arranged tool carrying device, the positioning of the welding strip is realized through the tool, the welding strip is also compressed onto the battery piece, and the welding strip is better fixed onto the battery piece through the back membrane strip.
Preferably, the battery string production equipment further comprises a blanking device, the blanking device is arranged at the rear of the battery piece feeding portion or the tooling carrying device, the blanking device comprises a tooling picking portion and a tooling moving portion, the tooling picking portion is installed at the driving end of the tooling moving portion, and the tooling moving portion is used for driving the tooling picking portion to carry the tooling away from the conveying portion.
The battery piece back side welding strip is fixed and then moved away through the arrangement of the blanking device.
Preferably, the battery string production equipment further comprises a tool carrying part and a group of tools which are placed on the conveying surface in advance, and the conveying part drives the tools to advance synchronously; the tool carrying part is used for circularly clamping a tool which is farthest away from the initial end of the conveying surface, and is also used for moving the tool to a battery piece of which the upper surface is paved with the front half section of the welding strip group so as to tightly press the welding strip group on the upper surface of the battery piece; or the tool carrying part is used for circularly clamping a tool which is farthest away from the initial end of the conveying surface, and the tool carrying part is also used for moving the tool to the battery piece of which the welding strip group on the upper surface is fixed by the surface film strip so as to tightly press the welding strip group on the upper surface of the battery piece.
Through a frock of frock transport portion circulation centre gripping distance transport face initial end farthest place the surface and laid the battery piece of the first half section of welding strip group or upper surface welding strip group by the battery piece top that the surface membrane strip is fixed, realized the cyclic use of frock, promoted the utilization efficiency of frock.
Preferably, surface membrane strip feed assembly includes positive membrane strip feed portion, and positive membrane strip feed portion is used for pasting many positive membrane strips in step along the direction of advance of conveying part and covers the upper surface at the battery piece, and the positive membrane strip corresponds with the solder strip of solder strip group one-to-one.
The welding strip group on the front side of the battery piece is fixed on the battery piece through the arrangement of the front side film strip feeding part.
Preferably, the front film strip supplying part comprises a front film strip supplying roll and a rolling pressing device, the front film strip supplying roll supplies the front film strips to the battery string, and the rolling pressing device presses and applies the front film strips to the battery string.
The front film strip feeding roll is arranged to realize the feeding of the front film strip, and the rolling pressing device is arranged to realize the continuous rolling pressing of the front film strip to the welding strip group on the front surface of the battery piece.
Preferably, the adhesive of the surface film strip and the adhesive of the back film strip are hot melt adhesives, the battery string production equipment further comprises a hot melt part arranged at the rear end of the surface film strip feeding assembly, and the hot melt part is used for heating the battery string so as to fix the surface film strip and the back film strip on the battery string.
The production of the battery string is realized by arranging the surface film strip and the back film strip into hot melt adhesive, and the connection of the welding strip and the battery piece is facilitated.
Preferably, the conveying part further comprises a heating assembly arranged below the conveying surface, and the heating assembly is used for heating the back film strips attached to the lower surface of the battery string.
The back film strip is pasted through the arrangement of the heating assembly.
Preferably, the tool comprises a mounting frame and a pressing pin row arranged on the mounting frame, the pressing pin row is arranged corresponding to the welding strip group, and each pressing pin row is used for pressing one welding strip.
The even compressing tightly of welding the area has been realized through the setting of pressing the needle row, avoids welding the area atress inhomogeneous and lead to unable and battery piece adhesion.
In another aspect, the present application further provides a battery string production method, including: continuously supplying a plurality of back film strips to the assembly line, and enabling the back film strips to synchronously advance along with the assembly line; stacking the welding band groups and the battery pieces on the back film strip according to a preset sequence, so that the ith battery piece is laid on the back half section of the ith welding band group, the front half section of the (i + 1) th welding band group is laid on the ith battery piece, and the back half section of each welding band in the ith welding band group is correspondingly laid on the back film strip one by one; and attaching a surface film strip on the upper surface of the cell piece so as to adhere the first half section of the (i + 1) th welding strip group to the front surface of the ith cell piece, wherein i is any natural number greater than 0.
The mode that advances in step along the assembly line through the back membrane strip has realized the feed of back membrane strip and has laid, has promoted the material loading efficiency of back membrane strip, has realized through setting up of surface membrane strip that to weld the front of taking to adhere to the battery piece, has realized wholly concatenating of battery piece and welding area through back membrane strip and surface membrane strip.
Preferably, the surface film strips adhered to the upper surface of each battery piece are at least two fixing film strips, the fixing film strips fix the welding strip group on the front surface of the battery piece, the fixing film strips are vertical to the welding strip group on the horizontal plane, and the battery string production method further comprises the step of pressing the back film strips on the battery string by using a tool;
or the like, or a combination thereof,
the method for producing the battery string comprises the steps that the film strips adhered to the upper surface of the battery piece are a plurality of front film strips, each front film strip covers one welding strip of the welding strip group, and the front film strips and the back film strips are tightly pressed on the surface of the battery piece by a tool;
the battery string production method further comprises the step of taking the tool away after the tool presses the membrane strip on the surface of the battery piece.
Will weld the area group through fixed membrane strip and fix the front at the battery piece, compress tightly the adhesion to the battery piece through the area of welding that the frock bore back membrane strip and back membrane strip, the fixing of the positive and back area of welding of battery piece has been realized, perhaps will weld the positive area of welding of taking the battery piece through many on the battery piece with positive membrane strip and glue to the battery piece, utilize the frock to compress tightly the adhesion to the battery piece with the area of welding of positive membrane strip below and the area of welding of back membrane strip top, the production of battery cluster has been realized, take the battery cluster unloading of the way of being convenient for behind the frock away.
Preferably, the surface film strips adhered to the upper surface of the battery piece are at least two fixed film strips and a plurality of front film strips, the welding strip group is pre-fixed on the front surface of the battery piece through the fixed film strips, and the fixed film strips are vertical to the welding strip group on the horizontal plane; the battery string production method further comprises the steps of utilizing the tool to press the back film strip onto the battery piece, taking away the tool after the tool presses the back film strip onto the lower surface of the battery piece, covering the front film strip on each welding strip of the welding strip group, and synchronously pressing the front film strip onto the upper surface of the battery piece through the idler wheels.
The pre-fixing of the welding strip group is realized through the fixed membrane strips, the sticking effect of the membrane strips on the back side of the battery piece and the welding strips is better increased by utilizing the tool, and the final series welding of the membrane strips on the front side of the battery piece and the welding strips is realized through the arrangement of the membrane strips on the front side.
Preferably, after both the back film strip and the surface film strip are attached to the surface of the cell, the cell string production method further comprises: and heating the battery piece to melt the adhesive of the back film strip and the surface film strip on the surface of the battery piece, and forming a battery string after the adhesive is solidified.
The back film strip, the surface film strip, the welding strip group and the battery piece are firmly adhered to form a string in a heating mode.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a partial view of a battery string production apparatus provided in one embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of FIG. 1B;
fig. 4 is a schematic structural diagram of a tool provided in an embodiment of the present application.
Wherein the reference numbers are as follows:
1a conveying part; 2, a battery piece; 3, welding a band group; 4, back film strips; 5 fixing the membrane strip; 6, front film strips; and 7, assembling.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The application provides a battery cluster production facility, as shown in fig. 1, fig. 2, and fig. 3, this battery cluster production facility includes back membrane strip feed portion, battery piece feed portion, solder strip feed portion, surface membrane strip feed assembly and conveying part 1, wherein: the back film strip feeding part is used for placing a plurality of parallel back film strips 4 on the conveying surface of the conveying part 1, and the conveying surface of the conveying part 1 drives the back film strips 4 to synchronously advance; the welding strip feeding part is used for supplying a welding strip group 3 to the conveying part 1, and welding strips in the welding strip group 3 and the back film strips 4 are placed in a one-to-one correspondence mode; the battery piece feeding part is used for supplying the battery pieces 2 to the conveying part 1; surface membrane strip feed assembly is used for providing the surface membrane strip to battery piece 2, weld area feed portion and battery piece feed portion and stack into the battery cluster with battery piece 2 and solder strip group 3, so that the ith battery piece 2 is laid on the back half section of ith solder strip group 3, the first half section of the (i + 1) th solder strip group 3 is laid on ith battery piece 2, the surface membrane strip fixes the first half section of the (i + 1) th solder strip group 3 on ith battery piece 2, back membrane strip 4 is fixed the back half section of the (i) th solder strip group 3 on i battery piece 2, wherein i is for being greater than 0 arbitrary natural number.
In one implementation, the back film strip feeding portion continuously provides the back film strips 4 to the conveying portion 1, the conveying portion 1 drives the back film strips 4 required by the battery string in advance, and the welding strip feeding portion and the battery piece feeding portion alternately lay the welding strip group 3 and the battery pieces 2 on the back film strips 4. Of course, the back film strip feeding portion may also gradually output the back film strips 4 along with the feeding of the solder ribbon feeding portion and the battery piece feeding portion.
The back membrane strips 4 are placed on the conveying part 1 side by side, the direction of the back membrane strips 4 is consistent with that of the welding strips in the welding strip group 3, and the back membrane strips 4 correspond to the welding strips in quantity one to one.
In one implementation mode, the conveying part 1 comprises a conveying roller and a conveying belt, the conveying belt is sleeved on the conveying roller, and negative pressure adsorption holes are formed in the conveying belt and used for adsorbing the battery pieces 2 and the back membrane strips 4.
In an implementation mode, the conveying part 1 conveys the back surface membrane strip 4 to the conveying surface, the welding strip feeding part places a first welding strip group on the back surface membrane strip 4, the battery piece feeding part places a first battery piece on the first welding strip group, the first battery piece is placed on the rear half section of the first welding strip group, then the welding strip feeding device provides a second welding strip group for the conveying part 1, the front half section of the second welding strip group is placed on the front surface of the first battery piece, the rear half section of the second welding strip group extends out of the upper side of the first battery piece and is placed on the back surface membrane strip 4, the battery piece feeding part provides a second battery piece, the second battery piece is placed on the rear half section of the second welding strip group, then the welding strip feeding device provides a third welding strip group, and the above steps are repeated until the placement of the whole battery string is completed. The solder tape is adhered to the back surface of the battery piece 2 by the back surface film strip 4. The surface film strip feeding assembly is used for providing a surface film strip for fixing the front welding strip of the battery piece 2 on the battery piece 2.
Through the setting of back membrane strip feed portion, realized utilizing back membrane strip 4 to fix the solder strip at the 2 backs of battery piece on battery piece 2, it has realized the continuous feed of back membrane strip 4 to advance in step through conveying part 1 drive back membrane strip 4, and the feed efficiency of back membrane strip 4 has been promoted, the power supply that utilizes the conveyer belt also can save back membrane strip 4 feedway's feed drive, equipment cost has been reduced, realized fixing the positive solder strip of battery piece 2 on battery piece 2 through surface membrane strip, the setting through back membrane strip feed portion and surface membrane strip feed assembly has realized that battery piece 2 is fixed with the solder strip, the production of battery cluster has been accomplished.
In one implementation mode, the surface film strip feeding assembly comprises a fixed film strip feeding part, the fixed film strip feeding part is used for providing at least two fixed film strips 5 for the battery piece 2, and the fixed film strips 5 are arranged in a crossed mode with the welding strip group 3; at least one fixing film strip 5 is used for fixing the welding strip group 3 at the first end of the front surface of the battery piece 2; at least one fixing film strip 5 is used for fixing the welding strip group 3 at the second end of the front surface of the cell slice 2.
The fixed film strip feeding portion is after welding the first half section of taking a set of solder strip to place the front of battery piece 2 at every turn of taking the feeding portion, and fixed film strip 5 is fixed the first half section of this set of solder strip on battery piece 2 to avoid the solder strip at subsequent transport and stack the skew of in-process appearance, thereby influence the quality of the battery cluster that produces.
The welding strip group 3 is positioned on the front face of the battery piece 2 through the arrangement of the fixed film strip feeding portion, and the film strip is alternately arranged with the welding strip group 3 through the fixed film strip 5, so that the film strip is fixed on the front face of the battery piece 2 through a plurality of welding strips.
In one implementation mode, the battery piece feeding part further comprises a tool carrying part, the battery piece feeding part is used for carrying the battery piece 2 and the tool 7 simultaneously so that the ith battery piece 2 is laid on the rear half section of the ith welding strip group 3, and the (i-1) th tool 7 tightly presses the front half section of the ith welding strip group 3 above the (i-1) th battery piece 2; or the battery string production equipment further comprises a tool carrying device, the tool carrying device is used for providing a tool 7 for the conveying part 1, and the tool 7 is used for pressing the front half section of the ith welding strip group 3 above the (i-1) th battery piece 2; wherein i is any natural number greater than 0.
In one implementation, the conveying part 1 conveys the back surface membrane strip 4 to the conveying surface, the welding strip feeding part places a first welding strip group on the back surface membrane strip 4, the battery piece feeding part places a first battery piece on the first welding strip group, meanwhile, a tool conveying part in the battery piece feeding part also conveys a tool 7, the tool 7 fixes the first half section of the first welding strip group on the conveying part 1, the first battery piece is placed on the second half section of the first welding strip group, then the welding strip feeding device provides a second welding strip group for the conveying part 1, the first half section of the second welding strip group is placed above the front surface of the first battery piece, the second half section of the second welding strip group extends out of the first battery piece and is placed on the back surface membrane strip 4, the battery piece feeding part provides a second battery piece, the tool conveying part places a tool 7 on the first half section of the second welding strip group while the tool conveying part places the second battery piece above the second half section of the second welding strip group, so as to compress the first half welding strip group, and then the whole battery piece feeding device is provided. The solder tape is adhered to the back surface of the battery piece 2 by the back surface film strip 4.
The tool carrying device and the tool carrying part have the same steps for placing the tool 7, and the difference is that the tool carrying device can be independently arranged, and the tool 7 can be independently carried without influencing the movement of the battery plate feeding part.
The feeding of the tool 7 is realized through the tool carrying part or through the independently arranged tool carrying device, the positioning of the welding strip is realized through the tool 7, the welding strip is also compressed onto the battery piece 2, and the welding strip is better fixed onto the battery piece 2 through the back film strip 4.
In an implementation mode, the battery string production equipment further comprises a blanking device, the blanking device is arranged behind the battery piece feeding portion or the tooling carrying device, the blanking device comprises a tooling picking portion and a tooling moving portion, the tooling picking portion is installed at a driving end of the tooling moving portion, and the tooling moving portion is used for driving the tooling picking portion to move the tooling 7 away from the conveying portion 1.
The battery piece 2 is moved away after the welding strip is fixed on the back surface through the arrangement of the blanking device.
In one implementation mode, the battery string production equipment further comprises a tool carrying part and a group of tools 7 which are placed on the conveying surface in advance, and the conveying part 1 drives the tools 7 to advance synchronously; the tool carrying part is used for circularly clamping a tool 7 which is farthest away from the initial end of the conveying surface, and is also used for moving the tool 7 to the battery piece 2 of which the upper surface is paved with the front half section of the welding strip group 3 so as to tightly press the welding strip group 3 on the upper surface of the battery piece 2; or the tool carrying part is used for circularly clamping a tool 7 which is farthest away from the initial end of the conveying surface, and the tool carrying part is also used for moving the tool 7 to the battery piece 2 of which the welding strip group 3 on the upper surface is fixed by the surface film strip so as to tightly press the welding strip group 3 on the upper surface of the battery piece 2.
A tooling 7 which is the farthest away from the initial end of the conveying surface is circularly clamped by the tooling conveying part and is placed above a battery piece 2 of which the surface is laid with the front half section of a welding strip group 3 or a battery piece 2 of which the upper surface welding strip group 3 is fixed by a surface film strip, so that the recycling of the tooling 7 is realized, and the utilization efficiency of the tooling 7 is improved.
In an implementation manner, in order to further fix the front welding strip of the battery piece 2, the surface film strip feeding assembly comprises a front film strip feeding portion, the front film strip feeding portion is used for synchronously attaching a plurality of front film strips 6 to the upper surface of the battery piece 2 along the advancing direction of the conveying portion 1, and the front film strips 6 correspond to the welding strips of the welding strip group 3 one by one.
The welding strip group 3 on the front side of the battery piece 2 is fixed on the battery piece 2 through the arrangement of the front side film strip feeding part.
In one implementation, the front film strip supply section includes a front film strip supply roll that supplies the front film strips 6 to the battery string and a rolling hold-down device that holds down the front film strips 6 against the battery string.
In one implementation, the front film strip supply roll continuously supplies the front film strips 6 of the cell pieces 2, and the film strips are pressed on the welding strips of the cell pieces 2 through continuous rolling of the rolling pressing device. The rolling pressing device comprises a roller, the roller is arranged above the conveying part 1, and the roller rotates when the conveying part 1 conveys the battery pack, so that the front film strip 6 is pressed on the welding strip above the battery piece 2.
The front film strip feeding roll is arranged to realize the feeding of the front film strip 6, and the rolling pressing device is arranged to realize the continuous rolling pressing of the front film strip 6 to the welding strip group 3 on the front surface of the battery piece 2.
In one implementation, after the first half section of the welding strip group 3 is placed on the upper surface of the corresponding battery piece 2, the front film strip feeding portion pastes the front film strip 6 on the first half section of the welding strip group 3, and then the tool 7 is placed to compress the front film strip 6, the battery piece 2 and the back film strip 4, so that the welding strip group 3 and the battery piece 2 are kept relatively still in the moving process.
In one implementation, the front film strip feeding portion only presses the front film strip 6 onto the welding strip set 3 on the front side of the battery piece after the tooling 7 is taken away from the battery piece 2.
In one implementation, the adhesive of the surface film strip and the back film strip 4 is hot melt adhesive, the battery string production equipment further comprises a hot melt part arranged at the rear of the surface film strip feeding assembly, and the hot melt part is used for heating the battery string to fix the surface film strip and the back film strip 4 on the battery string.
The production of the battery string is realized by arranging the surface film strip and the back film strip 4 into hot melt adhesive, and the connection of the welding strip and the battery piece 2 is facilitated.
In one implementation, the conveying part 1 further comprises a heating assembly arranged below the conveying surface, and the heating assembly is used for heating the back film strip 4 attached to the lower surface of the battery string.
The arrangement of the heating assembly realizes the accelerated coating of the back film strip 4.
In one implementation, as shown in fig. 4, the tool 7 includes a mounting frame and pin rows disposed on the mounting frame, the pin rows are disposed corresponding to the solder strip groups 3, and each pin row is used for pressing one solder strip.
The even compressing tightly of welding the area has been realized through the setting of pressing the needle row, avoids welding the area atress inhomogeneous and lead to unable and battery piece 2 adhesion.
In another aspect, the present application further provides a battery string production method, including: continuously supplying a plurality of back film strips 4 to the production line, and enabling the back film strips 4 to synchronously advance along the production line; the welding strip groups 3 and the battery pieces 2 are stacked on the back film strip 4 according to a preset sequence, so that the ith battery piece 2 is laid on the back half section of the ith welding strip group 3, the front half section of the (i + 1) th welding strip group 3 is laid on the ith battery piece 2, and the back half section of each welding strip in the ith welding strip group 3 is laid on the back film strip 4 in a one-to-one correspondence manner; and (3) attaching a surface film strip on the upper surface of the cell 2 so as to adhere the front half section of the (i + 1) th welding strip group 3 to the front surface of the ith cell 2, wherein i is any natural number greater than 0.
The back film strip 4 may be supplied in advance as a film strip required for the entire string of cells or may be supplied stepwise as the cell 2 and the solder ribbon are stacked.
The mode that advances in step along the assembly line through back membrane strip 4 has realized the feed of back membrane strip 4 and has laid, has promoted the material loading efficiency of back membrane strip 4, has realized through setting up of surface membrane strip that to weld the front of taking to adhere to battery piece 2, has realized wholly through back membrane strip 4 and surface membrane strip that concatenate of battery piece 2 and welding the area.
In one implementation mode, the surface film strips adhered to the upper surface of each battery piece 2 are at least two fixing film strips 5, the fixing film strips 5 fix the welding strip group 3 on the front surface of the battery piece 2, the fixing film strips 5 are perpendicular to the welding strip group 3 on the horizontal plane, and the battery string production method further comprises the step of pressing the back film strips 4 on the battery string by using a tool 7; or, the film strips adhered on the upper surface of the battery piece 2 are a plurality of front film strips 6, each front film strip 6 covers one welding strip of the welding strip group 3, and the battery string production method further comprises the step of pressing the front film strips 6 and the back film strips 4 on the surface of the battery piece 2 by using a tool 7; the battery string production method further comprises the step of taking the tool 7 away after the tool 7 presses the membrane strip on the surface of the battery piece 2.
The welding strip can be fixed on the battery string in advance by the fixed film strip 5, then the welding strip and the battery piece 2 are connected in series into the battery string by the front film strip 6 in the subsequent process, the front film strip 6 can be directly provided before the tool 7 is placed after the back film strip 4 is laid, and then the back film strip 4 and the front film strip 6 are pressed with the battery piece 2 and the welding strip by the tool 7 to form the battery string.
In one implementation mode, the surface film strips adhered to the upper surface of the battery piece 2 are at least two fixed film strips 5 and a plurality of front film strips 6, the fixed film strips 5 pre-fix the welding strip group 3 on the front surface of the battery piece 2, and the fixed film strips 5 are vertical to the welding strip group 3 on the horizontal plane; the battery string production method further comprises the steps that the back film strips 4 are tightly pressed on the battery pieces 2 through the tooling 7, after the tooling 7 tightly presses the back film strips 4 on the lower surfaces of the battery pieces 2, the tooling 7 is taken away, the front film strips 6 are covered on each welding strip of the welding strip group 3, and the front film strips 6 are synchronously tightly pressed on the upper surfaces of the battery pieces 2 through the rollers.
In order to ensure the attaching effect of the back film strip 4, after the welding strip and the battery piece 2 are stacked on the back film strip 4, the back film strip 4 can be pressed on the back of the battery piece 2 by the tool 7, then the tool 7 is moved away, the film strip is provided for the front of the battery piece 2, and the film strip is pressed on the front of the battery piece 2 by the roller. This kind provides back membrane strip 4 earlier, provides the mode of positive membrane strip 6 again and need not carry out segmentation to the membrane strip, and the whole cluster pad pasting just front and back pad pasting does not influence each other, has promoted the subsides of membrane strip and has covered efficiency.
Realized welding 3 of taking group through fixed membrane strip 5 and fixed in advance, utilize the effect of pasting of 2 back membrane strips 4 of increase battery pieces and welding area that frock 7 is better, realized through setting up of positive membrane strip 6 battery pieces 2 positive membrane strip 6 with the final tandem welding of welding area.
In one implementation, after both the back film strip 4 and the surface film strip are attached to the surface of the cell 2, the cell string production method further includes: and heating the battery piece 2 to melt the adhesive of the back surface film strip 4 and the surface film strip on the surface of the battery piece 2, and forming a battery string after the adhesive is solidified.
The back film strip 4, the surface film strip and the welding strip group 3 are firmly adhered to the battery piece 2 to form a string in a mode of heating the battery piece 2. The series production of the battery strings is accelerated.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (14)
1. The utility model provides a battery cluster production facility, its characterized in that, battery cluster production facility includes back membrane strip feed portion, battery piece feed portion, welds and takes feed portion, surface membrane strip feed assembly and conveying part, wherein:
the back film strip feeding part is used for placing a plurality of parallel back film strips on the conveying surface of the conveying part, and the conveying surface of the conveying part drives the back film strips to synchronously advance;
the welding strip feeding part is used for providing a welding strip group for the conveying part, and welding strips in the welding strip group and the back film strips are placed in a one-to-one correspondence mode;
the battery piece feeding part is used for supplying battery pieces to the conveying part;
the surface film strip feeding assembly is used for providing a surface film strip for the battery piece,
the battery plate and the welding belt group are stacked into a battery string by the welding belt feeding part and the battery plate feeding part, so that the ith battery plate is laid on the back half section of the ith welding belt group, the front half section of the (i + 1) th welding belt group is laid on the ith battery plate,
the surface membrane strip fixes the first half section of the (i + 1) th solder strip group on the ith cell piece, the back membrane strip fixes the second half section of the (i) th solder strip group on the ith cell piece, wherein i is any natural number greater than 0.
2. The battery string production equipment according to claim 1, wherein the surface film strip feeding assembly comprises a fixed film strip feeding part for feeding at least two fixed film strips to the battery piece, the fixed film strips being arranged to intersect with the solder ribbon groups;
the fixing film strip is used for fixing the welding strip group on the first end of the front side of the battery piece;
and at least one fixing film strip is used for fixing the welding strip group at the second end of the front surface of the battery piece.
3. The battery string production equipment according to claim 1, wherein the battery piece feeding part further comprises a tool carrying part for carrying the battery piece and the tool at the same time,
so that the ith battery plate is laid on the back half section of the ith welding strip group, and the (i-1) th tooling compresses the front half section of the ith welding strip group above the (i-1) th battery plate; alternatively, the first and second electrodes may be,
the battery string production equipment further comprises a tool carrying device, the tool carrying device is used for providing tools for the conveying part, and the tools are used for tightly pressing the front half section of the ith welding strip group above the (i-1) th battery piece;
wherein i is any natural number greater than 0.
4. The battery string production equipment according to claim 3, further comprising a blanking device disposed at a rear of the cell supply portion or the tool carrying device,
the blanking device comprises a tool picking part and a tool moving part, the tool picking part is installed at the driving end of the tool moving part, and the tool moving part is used for driving the tool picking part to move the tool away from the conveying part.
5. The battery string production equipment according to claim 1, further comprising a tool carrying part and a set of tools pre-placed on the conveying surface, wherein the conveying part drives the tools to advance synchronously;
the tool carrying part is used for circularly clamping the tool farthest from the initial end of the conveying surface, and is also used for moving the tool to the battery piece of which the upper surface is paved with the front half section of the welding strip group so as to tightly press the welding strip group on the upper surface of the battery piece;
or the like, or, alternatively,
the tool carrying part is used for circularly clamping the tool which is farthest away from the initial end of the conveying surface, and the tool carrying part is also used for moving the tool to the battery piece, wherein the welding strip group on the upper surface of the tool is fixed by the surface film strip, so that the welding strip group on the upper surface of the battery piece is compressed.
6. The battery string production device according to any one of claims 1 to 5, wherein the surface film strip feeding assembly comprises a front surface film strip feeding portion, the front surface film strip feeding portion is used for synchronously attaching a plurality of front surface film strips to the upper surface of the battery piece along the advancing direction of the conveying portion, and the front surface film strips correspond to the welding strips of the welding strip group in a one-to-one manner.
7. The battery string production apparatus according to claim 6, wherein the front side film strip supply section includes a front side film strip supply roll that supplies the front side film strip to the battery string and a rolling pressing device that presses the front side film strip against the battery string.
8. The battery string production equipment according to claim 1, wherein the adhesive of the surface film strip and the back film strip is hot melt adhesive, and the battery string production equipment further comprises a hot melt part arranged at the rear of the surface film strip feeding assembly, and the hot melt part is used for heating the battery string to fix the surface film strip and the back film strip on the battery string.
9. The battery string production apparatus according to claim 1 or 8, wherein the conveying section further includes a heating member disposed below the conveying surface, the heating member being configured to heat a back film strip attached to a lower surface of the battery string.
10. The battery string production device according to any one of claims 3 to 5, wherein the tooling comprises a mounting frame and a pin header arranged on the mounting frame, the pin header is arranged corresponding to the solder strip assembly, and each pin header is used for pressing one solder strip.
11. A method for producing a battery string, the method comprising:
continuously supplying a plurality of back film strips to a production line, and enabling the back film strips to synchronously advance along the production line;
stacking welding strip groups and battery pieces on the back membrane strip according to a preset sequence, so that the ith battery piece is laid on the back half section of the ith welding strip group, the front half section of the (i + 1) th welding strip group is laid on the ith battery piece, and the back half section of each welding strip in the ith welding strip group is laid on the back membrane strip in a one-to-one correspondence manner;
and attaching a surface film strip on the upper surface of the cell to adhere the first half section of the (i + 1) th solder strip group to the front surface of the ith cell, wherein i is any natural number greater than 0.
12. The method for producing a battery string according to claim 11, wherein the surface film strips attached to the upper surface of each battery piece are at least two fixing film strips, the fixing film strips fix the solder ribbon groups on the front surfaces of the battery pieces, the fixing film strips are perpendicular to the solder ribbon groups in the horizontal plane, and the method for producing a battery string further comprises the step of pressing the back surface film strips on the battery string by using a tool;
or the like, or, alternatively,
the method for producing the battery string comprises the steps that the film strips adhered to the upper surface of the battery piece are a plurality of front film strips, each front film strip covers one welding strip of the welding strip group, and the front film strips and the back film strips are tightly pressed on the surface of the battery piece by a tool;
the production method of the battery string further comprises the step of taking the tool away after the tool presses the membrane strip on the surface of the battery piece.
13. The method for producing a battery string according to claim 11, wherein the surface film strips attached to the upper surface of the battery piece are at least two fixing film strips and a plurality of front film strips, the fixing film strips pre-fix the solder strip assembly on the front surface of the battery piece, and the fixing film strips are perpendicular to the solder strip assembly on the horizontal plane;
the production method of the battery string also comprises the steps of utilizing a tool to tightly press the back film strip on the battery piece,
and after the back film strips are tightly pressed on the lower surface of the battery piece by the tool, the tool is taken away, the front film strips are covered on each welding strip of the welding strip group, and the front film strips are synchronously tightly pressed on the upper surface of the battery piece by the roller.
14. The method for producing a battery string according to claim 12 or 13, wherein after both the back film strip and the surface film strip are attached to the surface of the battery piece, the method for producing a battery string further comprises:
and heating the battery piece to enable the adhesive of the back surface film strip and the surface film strip to be melted on the surface of the battery piece, and forming a battery string after the adhesive is solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211434175.4A CN115763329A (en) | 2022-11-16 | 2022-11-16 | Battery string production equipment and production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211434175.4A CN115763329A (en) | 2022-11-16 | 2022-11-16 | Battery string production equipment and production method |
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| CN115763329A true CN115763329A (en) | 2023-03-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117133835A (en) * | 2023-10-26 | 2023-11-28 | 苏州小牛自动化设备有限公司 | Production equipment for BC battery lamination strings |
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2022
- 2022-11-16 CN CN202211434175.4A patent/CN115763329A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117133835A (en) * | 2023-10-26 | 2023-11-28 | 苏州小牛自动化设备有限公司 | Production equipment for BC battery lamination strings |
| CN117133835B (en) * | 2023-10-26 | 2024-03-01 | 苏州小牛自动化设备有限公司 | Production equipment for BC battery lamination strings |
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