CN111864012B - Battery string, battery pack manufacturing apparatus, and method of manufacturing battery pack - Google Patents
Battery string, battery pack manufacturing apparatus, and method of manufacturing battery pack Download PDFInfo
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- CN111864012B CN111864012B CN202010680470.2A CN202010680470A CN111864012B CN 111864012 B CN111864012 B CN 111864012B CN 202010680470 A CN202010680470 A CN 202010680470A CN 111864012 B CN111864012 B CN 111864012B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 167
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000010030 laminating Methods 0.000 claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000007723 transport mechanism Effects 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 14
- 238000005336 cracking Methods 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 description 18
- 238000003475 lamination Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920006124 polyolefin elastomer Polymers 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
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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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- Electromagnetism (AREA)
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- Sustainable Development (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
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Abstract
The application discloses a battery string, a manufacturing device of the battery assembly and a method for manufacturing the battery assembly, wherein the manufacturing device of the battery string comprises a displacement mechanism, a first conveying mechanism and a second conveying mechanism, and the displacement mechanism is used for driving the first conveying mechanism and/or the second conveying mechanism to displace; when the device is laid, a battery string is conveyed from the first conveying mechanism to the second conveying mechanism, the battery string comprises a first battery piece and a second battery piece which are adjacent, the first battery piece and the second battery piece are connected through a welding strip, and the first battery piece and the second battery piece are provided with overlapping areas; when the second battery piece is positioned on the second conveying mechanism and at least one part of the first battery piece is positioned on the first conveying mechanism, the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so as to separate the first battery piece and the second battery piece in the overlapping region, so that the gasket is laid in the overlapping region, the gasket is added in the two battery pieces, and the hidden cracking of the battery pieces in the laminating process is avoided.
Description
Technical Field
The invention relates to the field of photovoltaic cell manufacturing, in particular to a manufacturing device of a cell string and a cell assembly and a method for preparing the cell assembly.
Background
With the rapid development of the photovoltaic industry, the high power of the photovoltaic module is the goal pursued by the industry, and the stitch bonding technology extended from the MBB series bonding technology is emphasized by more and more companies. The MBB stitch welding technology is to weld the edges of two battery pieces together in an overlapping mode through a welding strip, and the welding strip in the overlapping area of the two battery pieces is flattened, so that the point supporting stress of the welding strip on the battery in the overlapping area is reduced, and the hidden cracking risk of the battery is reduced. However, although the prior art adopts a scheme of flattening the solder strip to reduce the stress of the overlapping area, the scheme still has point support of the solder strip on the battery piece, and the overlapping area of the battery still has obvious hidden cracks.
Therefore, in order to change the contact between the battery cells from point contact by the solder fillet to surface contact by the cushion pad formed by the gasket, the gasket may be provided at the overlapping region of the battery cells. When the battery pieces are laminated, the gasket can cover at least one side face of the welding strip in the overlapping area due to high-temperature melting of lamination, so that the welding strip cannot be in direct contact with the two battery pieces in the overlapping area, and hidden cracking of the battery pieces caused by contact stress generated by point contact of the welding strip and the two battery pieces is avoided.
However, the series welding equipment in the prior art is difficult to add gaskets in two battery plates in the processing process of series welding lamination, and the equipment transformation difficulty is large. Meanwhile, even if the process of laying the gasket can be added on the original series welding equipment, the manufacturing precision of the battery string of the series welding equipment can be influenced, and the situations of insufficient soldering, partial soldering and the like are easy to occur.
Disclosure of Invention
In order to solve the defects of the prior art, the main object of the present invention is to provide a battery string, a manufacturing apparatus of a battery assembly and a method for manufacturing a battery assembly, so as to increase a gasket in two battery pieces during the processing of a string welding lamination, and avoid hidden cracking of the battery pieces caused by contact stress generated by point contact between a welding strip and the two battery pieces during the lamination process.
In order to achieve the above object, the present invention provides in a first aspect an apparatus for manufacturing a battery string, the apparatus comprising:
the device comprises a displacement mechanism, a first conveying mechanism and a second conveying mechanism, wherein the displacement mechanism is used for driving the first conveying mechanism and/or the second conveying mechanism to displace;
when the battery string is laid, the battery string is conveyed from the first conveying mechanism to the second conveying mechanism, the battery string comprises a first battery piece and a second battery piece which are adjacent, the first battery piece is connected with the second battery piece through a welding strip, and the first battery piece and the second battery piece are provided with an overlapping area;
when the second battery piece is located on the second conveying mechanism and at least one part of the first battery piece is located on the first conveying mechanism, the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so as to separate the first battery piece and the second battery piece in the overlapping region, so that the gasket is laid in the overlapping region.
In some embodiments, the device includes a heating mechanism for heating at least a portion of the mat after the mat is laid into the overlap region to melt the mat and connect the first cell piece and/or the second cell piece.
In some embodiments, the first conveying mechanism and the second conveying mechanism include a conveyor belt, the battery string is disposed on the conveyor belt, and the conveyor belt drives the battery string to displace so as to convey the battery string.
In some embodiments, the displacement mechanism is configured to displace the second conveying mechanism, and the first conveying mechanism is rotatably connected to the second conveying mechanism;
when the battery string is conveyed from the first conveying mechanism to the second conveying mechanism, the first conveying mechanism and the second conveying mechanism form an included angle with a horizontal plane by a first preset angle;
when the second battery piece is positioned on the second conveying mechanism and at least one part of the first battery piece is positioned on the first conveying mechanism, the displacement mechanism enables an included angle between the second conveying mechanism and the horizontal plane to be converted into a second preset angle, so that the first battery piece and the second battery piece in the overlapping area are separated.
In some embodiments, the first preset angle ranges from 5 degrees to 45 degrees.
In some embodiments, the displacement mechanism is used for driving the first conveying mechanism and the second conveying mechanism to displace,
when the second battery piece is located on the second conveying mechanism and at least one part of the first battery piece is located on the first conveying mechanism, the displacement mechanism enables the first conveying mechanism and the second conveying mechanism to be away from each other along a preset direction, so that the first battery piece and the second battery piece in the overlapping area are separated.
In some embodiments, the manufacturing apparatus includes a gasket laying mechanism for laying the gasket into the overlapping region when the first cell piece and the second cell piece in the overlapping region are separated;
the gasket laying mechanism includes:
the feeding mechanism is used for conveying the gasket to a preset direction;
the cutting mechanism is used for cutting the gasket when the length of the conveyed gasket meets the preset requirement;
a traction mechanism for laying the cut shim to the overlap area.
In some embodiments, the first and second transport mechanisms include an adsorption structure for fixing the battery string on the first and second transport mechanisms by adsorption.
In a second aspect, the present application discloses an apparatus for manufacturing a battery pack, comprising the apparatus for manufacturing a battery string as described above, further comprising a laminating apparatus for laminating the battery string, the gasket melting and forming a cushion pad covering at least one side of the solder ribbon located in the overlapping region;
the laminating device comprises a laminated plate, wherein a groove is formed in the laminated plate, the laminated plate is arranged above the first battery piece and the second battery piece when being laminated, and the groove is arranged above the overlapping area, so that the laminating pressure is transmitted to the first battery piece and the second battery piece through the laminated plate.
In a third aspect, the present application discloses a method of making a battery assembly, the method comprising: using the manufacturing apparatus described above, a spacer is laid in the overlapping region of adjacent battery pieces.
The invention has the following beneficial effects:
the present invention provides an apparatus for manufacturing a battery string, the apparatus including: the device comprises a displacement mechanism, a first conveying mechanism and a second conveying mechanism, wherein the displacement mechanism is used for driving the first conveying mechanism and/or the second conveying mechanism to displace; when the battery string is laid, the battery string is conveyed from the first conveying mechanism to the second conveying mechanism, the battery string comprises a first battery piece and a second battery piece which are adjacent, the first battery piece is connected with the second battery piece through a welding strip, and the first battery piece and the second battery piece are provided with an overlapping area; when the second battery piece is positioned on the second conveying mechanism and at least one part of the first battery piece is positioned on the first conveying mechanism, the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so as to separate the first battery piece and the second battery piece in the overlapping region, so that the gasket is paved in the overlapping region, the gasket is added in the two battery pieces in the series welding lamination process, hidden cracking caused by contact stress generated by point contact between the welding strip and the two battery pieces in the lamination process is avoided, and the device is simple in structure and easy to manufacture;
further, the application also provides that the device comprises a heating mechanism, wherein the heating mechanism is used for heating at least one part of the gasket after the gasket is laid in the overlapping area so as to melt the gasket and connect the first battery piece and/or the second battery piece, and the gasket is heated in advance so as to partially melt the gasket, so that the gasket can be prevented from falling off in the subsequent processing process, and the production yield is improved.
All products of the present invention need not have all of the above-described effects.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a battery string provided in an embodiment of the present application;
FIG. 2 is a schematic view of a loading of one embodiment of a manufacturing apparatus provided herein;
FIG. 3 is a schematic mat layup of an embodiment of a manufacturing apparatus provided herein;
FIG. 4 is a schematic illustration of a post-installation repositioning of a shim in one embodiment of a manufacturing apparatus provided herein;
FIG. 5 is a schematic mat layup of another embodiment of a manufacturing apparatus provided herein;
FIG. 6 is a schematic structural diagram of a mat installation mechanism provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a lamination tool provided in an embodiment of the present application;
fig. 8 is a front view of a lamination tool provided in an embodiment of the present application as positioned over a battery string;
fig. 9 is a schematic structural diagram of a battery string with gaskets laid according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a shim preheating provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background, the present application provides a device for manufacturing a battery string, so as to add a gasket to two battery plates during the process of series welding a stack, and avoid hidden cracks of the battery plates caused by contact stress generated by point contact between a solder strip and the two battery plates during the lamination process.
The following describes a manufacturing apparatus of a battery string according to an embodiment of the present application in detail with reference to the drawings.
As shown in fig. 1, the battery string may include two or more battery pieces, such as a first battery piece 10 and a second battery piece 20, and the adjacent battery pieces have an overlapping region 30 therebetween and are connected by a welding strip 31. In order to change the contact between the battery pieces from point contact by the solder ribbons 31 to surface contact by the cushion pads formed by the spacers, the spacers 40 may be laid at the overlapping regions 30 between the battery pieces, and the battery string restored after laying may be as shown in fig. 9.
After the spacers are laid, the battery strings need to be laminated. The gasket 40 forms a cushion covering at least one side of the solder ribbon in the overlap region during the lamination process due to the high temperature melting of the lamination. Preferably, the material of the gasket 40 is a non-conductive soft material, and includes ethylene-vinyl acetate copolymer, polyolefin elastomer, a composite material containing ethylene-vinyl acetate copolymer and polyolefin elastomer, or an elastomer material such as polyethylene.
Preferably, the length of the overlapping region 30 is similar to the length of the first battery piece 10 and the second battery piece 20, and the width is 0.7mm ± 0.5 mm.
In order to lay the spacers 40 at the overlapping area 30, the present application proposes a manufacturing apparatus of a battery string including a first transfer mechanism 50, a second transfer mechanism 60, and a displacement mechanism.
The displacement mechanism is used for driving the first conveying mechanism 50 and/or the second conveying mechanism 60 to displace, and can drive the first conveying mechanism 50 and/or the second conveying mechanism 60 to rotate or move the position of the first conveying mechanism 50 and/or the second conveying mechanism 60.
The displacement mechanism may comprise any mechanical structure or circuit, etc. that can achieve the above-mentioned functions, and the present application is not limited thereto.
The first transfer mechanism 50 and the second transfer mechanism 60 may be identical in structure or different in structure.
In one embodiment, the displacement mechanism may rotate the second transfer mechanism 60 to lay down the mat 40 within the overlap area 30. As shown in fig. 2, the first transfer mechanism 50 and the second transfer mechanism 60 may include a complete transfer belt 71 and transfer wheels 81, 82 and 83. The first transport mechanism 50 comprises a transport wheel 81 and the part of the transport belt to the left of the transport wheel 82 in fig. 2, and the second transport mechanism 60 comprises the transport wheel 82 and the part of the transport belt to the right of the transport wheel 82 in fig. 2.
When the mat is initially laid, the included angle between the first conveying mechanism 50 and the second conveying mechanism 60 and the horizontal plane is a first preset angle. The first battery piece 10 and the second battery piece 20 are loaded from above the transfer wheel 81 to the first transfer mechanism 50. As shown in fig. 3, when the second battery piece 20 is located on the second conveying mechanism 60 and at least a portion of the first battery piece 10 is located on the first conveying mechanism 50, the displacement mechanism makes an included angle between the second conveying mechanism 60 and the horizontal plane be a second preset angle, so as to separate the first battery piece 10 and the second battery piece 20 in the overlapping area 30, and the gasket laying mechanism 90 lays the gasket 40 into the overlapping area 30.
Preferably, a support structure 87 is disposed below the conveying wheel 82, and can be used as a rotation fulcrum when the second conveying mechanism 60 rotates to a second preset angle with the horizontal plane, and can also support the conveying belt when the second conveying mechanism 60 rotates to a second preset angle with the horizontal plane, so as to prevent the conveying belt from sagging.
Preferably, the range of the first preset angle is 5 degrees to 45 degrees, and the second preset angle is 0 degree.
After the placement of the spacer 40 is completed, as shown in fig. 4, the second transfer mechanism 60 may be reset to the initial position to continue the placement of the spacer at the overlapping area of the second cell 20 and the subsequent cell.
When the spacers are laid in all of the overlapping areas, the cell strings are laminated.
In another embodiment, the displacement mechanism may translate the second transfer mechanism 60 up and down to lay down the mat 40 within the overlap region 30. As shown in fig. 5, the first transfer mechanism 50 includes a transfer belt 72, a transfer wheel 84, and a transfer wheel 85. The second conveying mechanism 60 includes a conveyor belt 73, a conveyor wheel 86, and a conveyor wheel 87. The displacement mechanism can drive the first conveying mechanism and/or the second conveying mechanism to translate up and down along the vertical direction of fig. 5. Initially, the first conveying mechanism 50 and the second conveying mechanism 60 are parallel to the horizontal plane, the first conveying mechanism 50 is communicated with the second conveying mechanism 60, and the first battery piece 10 and the second battery piece 20 are loaded to the first conveying mechanism 50 from the direction of the conveying wheel 84 and then conveyed to the direction of the second conveying mechanism 60.
As shown in fig. 5, when the second battery piece 20 is located on the second conveying mechanism 60 and at least a portion of the first battery piece 10 is located on the first conveying mechanism 50, the displacement mechanism translates the second conveying mechanism 60 downward by a preset distance to separate the first battery piece 10 and the second battery piece 20 in the overlapping region, and the gasket laying mechanism 90 lays the gasket 40 into the overlapping region 30.
Preferably, the displacement mechanism may also translate the first conveying mechanism 50 upward by a preset distance to separate the first battery piece 10 and the second battery piece 20 in the overlapping region.
Preferably, the value range of the preset distance is 1-5 mm.
After the placement of the spacer 40, the second transfer mechanism 60 may be reset to the initial position to continue the placement of the spacer at the overlapping area of the first cell piece 10 and the subsequent cell piece.
When the spacers are laid in all of the overlapping areas, the cell strings are laminated.
Preferably, in order to prevent the gasket from slipping off during the subsequent movement or processing of the battery string, after the gasket is added to the overlapping region of the battery string, the heating mechanism 110 may be used to locally heat the gasket, so that the gasket is locally melted and bonded to the battery piece. As shown in fig. 10, preferably, the heating mechanism 110 may preheat both ends and the center of the gasket to partially melt and connect the gasket with the first cell piece 10 and/or the second cell piece 20, so as to prevent the gasket from being displaced during the subsequent processing or moving process.
Preferably, the two ends and the central position of the part of the gasket above the lower battery piece in the two battery pieces with the overlapped area can be preheated to partially melt the gasket and be connected with the battery piece below, so as to avoid the situation that the part of the gasket below the upper battery piece is melted during local heating, and the melted gasket is adhered to the conveying mechanism.
Preferably, the heating mechanism may comprise a soldering iron tip or a heating device such as an infrared laser.
The mat placement mechanism may include a feed tray 91, feed rollers 92, cutting blades 93, and pulling jaws 94. Fig. 6 shows a process of laying a gasket using the apparatus after the solder ribbon is previously laid on the battery sheet, the process including:
cutting the gasket 40 to a preset width, and hanging the gasket in the feeding tray 91;
adjusting the feeding direction of the pad 40 of the laying device to be perpendicular to the feeding direction of the solder strip 20;
the feeding roller 92 drives the gasket 40 to move towards the battery piece 95;
when the length of the spacer 40 reaches a predetermined length, the spacer 40 is cut by the cutting blade 73, and the cut spacer 40 is pulled to a predetermined position on the battery piece 95 by the pulling claw 94.
Preferably, other mechanical structures can also be used to implement the pad laying, for example, a mechanical arm with a suction nozzle is used to suck up the pad and then place the pad on the preset position on the battery piece, which is not limited in this application.
After the laying up of the spacers 40 is completed, the battery string may be placed in a laminator for lamination. During lamination, the gasket 40 will melt due to the temperature and pressure of lamination. Preferably, the gasket 40 may flow in a direction of a lower cell piece of the two overlapped cell pieces with the help of the laminating tool 100 shown in fig. 7 to form a cushion pad covering the solder strip in the overlapped region.
Preferably, the laminating tool comprises a laminated board, a groove with the width not smaller than that of the overlapping area 30 is formed in the laminated board, and during laminating, the laminating tool 100 is placed on the battery string, and the groove is aligned with the overlapping area 30 of the battery string. The pressure applied by the laminating machine is transmitted to the battery string through the tooling, and the pressure applied by the laminating machine is buffered by the laminating tooling, so that the situation that the parts of the two battery pieces in the overlapped area are hidden or cracked due to the fact that the parts of the two battery pieces directly bear the pressure applied by the laminating machine is avoided.
Since the lower part of the upper cell piece of the two overlapped cell pieces is suspended in the air during the lamination process, the cell piece is easy to break or crack. Therefore, in order to further buffer the pressure applied to the upper cell, the slot 101 may be closer to the upper first cell 10 than to the lower second cell 20, so as to support the upper cell. As shown in fig. 8, which is a front view of the laminate sheet disposed over a battery string comprising a first cell piece 10 and a second cell piece 20, the slot 101 includes a first end 102 and a second end 103 that are disposed opposite each other. As shown in fig. 8, the first cell piece 10 is stacked above the second cell piece 20, the first end 102 of the slot 101 is located above the first cell piece 10, the second end 103 is located above the second cell piece 20, and the distance between the first end 102 and the overlapping region 30 is greater than the distance between the second end 103 and the overlapping region 30.
In the description of the present invention, it is to be understood that the terms "X axis", "Y axis", "Z axis", "vertical", "parallel", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An apparatus for manufacturing a battery string, the apparatus comprising:
the device comprises a displacement mechanism, a first conveying mechanism and a second conveying mechanism, wherein the displacement mechanism is used for driving the first conveying mechanism and/or the second conveying mechanism to displace;
when the battery string is laid, the battery string is conveyed from the first conveying mechanism to the second conveying mechanism, the battery string comprises a first battery piece and a second battery piece which are adjacent, the first battery piece is connected with the second battery piece through a welding strip, and the first battery piece and the second battery piece are provided with an overlapping area;
when the second battery piece is located on the second conveying mechanism and at least one part of the first battery piece is located on the first conveying mechanism, the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so as to separate the first battery piece and the second battery piece in the overlapping region, so that the gasket is laid in the overlapping region.
2. The manufacturing apparatus according to claim 1, comprising a heating mechanism for heating at least a portion of the mat after the mat is laid into the overlapping region to melt the mat and connect the first cell piece and/or the second cell piece.
3. The manufacturing apparatus according to claim 1 or 2, wherein the first conveying mechanism and the second conveying mechanism include a conveyor belt on which the battery string is disposed, the conveyor belt displacing the battery string to convey the battery string.
4. The manufacturing apparatus according to claim 1 or 2, wherein the displacement mechanism is configured to displace the second conveying mechanism, and the first conveying mechanism is rotatably connected to the second conveying mechanism;
when the battery string is conveyed from the first conveying mechanism to the second conveying mechanism, the first conveying mechanism and the second conveying mechanism form an included angle with a horizontal plane by a first preset angle;
when the second battery piece is positioned on the second conveying mechanism and at least one part of the first battery piece is positioned on the first conveying mechanism, the displacement mechanism enables an included angle between the second conveying mechanism and the horizontal plane to be converted into a second preset angle, so that the first battery piece and the second battery piece in the overlapping area are separated.
5. The manufacturing apparatus as claimed in claim 4, wherein the first predetermined angle is in a range of 5 degrees to 45 degrees.
6. The manufacturing apparatus according to claim 1 or 2, wherein the displacement mechanism is configured to displace the first transport mechanism and the second transport mechanism,
when the second battery piece is located on the second conveying mechanism and at least one part of the first battery piece is located on the first conveying mechanism, the displacement mechanism enables the first conveying mechanism and the second conveying mechanism to be away from each other along a preset direction, so that the first battery piece and the second battery piece in the overlapping area are separated.
7. The manufacturing apparatus according to claim 1 or 2, characterized in that the manufacturing apparatus includes a spacer laying mechanism for laying the spacer into the overlapping region when the first cell piece and the second cell piece in the overlapping region are separated;
the gasket laying mechanism includes:
the feeding mechanism is used for conveying the gasket to a preset direction;
the cutting mechanism is used for cutting the gasket when the length of the conveyed gasket meets the preset requirement;
a traction mechanism for laying the cut shim to the overlap area.
8. The manufacturing apparatus according to claim 1 or 2, wherein the first conveying mechanism and the second conveying mechanism include an adsorption structure for fixing the battery string on the first conveying mechanism and the second conveying mechanism by adsorption.
9. An apparatus for manufacturing a battery pack, comprising the apparatus for manufacturing a battery string according to any one of claims 1 to 8, wherein the apparatus for manufacturing a battery pack further comprises a laminating apparatus for laminating the battery string, the gasket being melted and forming a cushion pad covering at least one side of the solder ribbon located in the overlapping area;
the laminating device comprises a laminated plate, wherein a groove is formed in the laminated plate, the laminated plate is arranged above the first battery piece and the second battery piece when being laminated, and the groove is arranged above the overlapping area, so that the laminating pressure is transmitted to the first battery piece and the second battery piece through the laminated plate.
10. A method of making a battery assembly, the method comprising: using the manufacturing apparatus as set forth in any one of claims 1 to 9, a spacer is laid in the overlapping region of adjacent battery pieces.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680470.2A CN111864012B (en) | 2020-07-15 | 2020-07-15 | Battery string, battery pack manufacturing apparatus, and method of manufacturing battery pack |
| PCT/CN2020/119135 WO2021258576A1 (en) | 2020-06-24 | 2020-09-30 | Battery string, battery assembly, and fabrication apparatus and fabrication method for battery string |
| US17/778,817 US20220406951A1 (en) | 2020-06-24 | 2020-09-30 | Battery string, battery assembly, and fabrication apparatus and fabrication method for battery string |
| EP20941807.8A EP4047670A4 (en) | 2020-06-24 | 2020-09-30 | Battery string, battery assembly, and fabrication apparatus and fabrication method for battery string |
| CN202080102426.1A CN115917762A (en) | 2020-06-24 | 2020-09-30 | Battery string, battery pack, and device and method for manufacturing battery string |
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| CN202010680470.2A CN111864012B (en) | 2020-07-15 | 2020-07-15 | Battery string, battery pack manufacturing apparatus, and method of manufacturing battery pack |
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| CN111864012B true CN111864012B (en) | 2022-05-20 |
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| CN114530514A (en) * | 2020-11-06 | 2022-05-24 | 上海晶澳太阳能科技有限公司 | Photovoltaic cell string, photovoltaic module and preparation method of photovoltaic module |
| CN117352575A (en) * | 2023-12-04 | 2024-01-05 | 正泰新能科技股份有限公司 | Photovoltaic cell string, photovoltaic cell panel and photovoltaic cell assembly |
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| EP2269757A1 (en) * | 2009-06-30 | 2011-01-05 | Feintool Intellectual Property AG | Apparatus to connect, in particular solder, a connector with a solar cell with a cleaning unit |
| CN109352220A (en) * | 2018-11-05 | 2019-02-19 | 无锡奥特维科技股份有限公司 | Welding processing equipment and method and string welding machine |
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| DE102005036130A1 (en) * | 2005-07-26 | 2007-02-01 | Ernst Knoll Feinmechanik Gmbh | Method and device for producing a solar cell string |
| CN107968129A (en) * | 2017-12-21 | 2018-04-27 | 君泰创新（北京）科技有限公司 | Photovoltaic cell processing technology and photovoltaic cell string weldering solidification equipment |
| CN209544297U (en) * | 2019-04-16 | 2019-10-25 | 无锡奥特维科技股份有限公司 | A kind of battery strings welding transmission device |
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|---|---|---|---|---|
| EP2269757A1 (en) * | 2009-06-30 | 2011-01-05 | Feintool Intellectual Property AG | Apparatus to connect, in particular solder, a connector with a solar cell with a cleaning unit |
| CN109352220A (en) * | 2018-11-05 | 2019-02-19 | 无锡奥特维科技股份有限公司 | Welding processing equipment and method and string welding machine |
| CN210123750U (en) * | 2019-07-18 | 2020-03-03 | 苏州阿特斯阳光电力科技有限公司 | Automatic welding device for solar cell |
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