CN114447158A - Hot-pressing series welding machine and hot-pressing series welding method - Google Patents
Hot-pressing series welding machine and hot-pressing series welding method Download PDFInfo
- Publication number
- CN114447158A CN114447158A CN202210109077.7A CN202210109077A CN114447158A CN 114447158 A CN114447158 A CN 114447158A CN 202210109077 A CN202210109077 A CN 202210109077A CN 114447158 A CN114447158 A CN 114447158A
- Authority
- CN
- China
- Prior art keywords
- welding
- battery
- pressing
- hot
- conveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/137—Batch treatment of the devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
- B23K20/026—Thermo-compression bonding with diffusion of soldering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
本发明提供了一种热压串焊机及热压串焊方法，其中的热压串焊机包括焊带提供装置、电池片提供装置、压紧装置、热压装置及焊接输送装置，其中：焊带提供装置与电池片提供装置将预加热后的焊带组和电池片按照预定规则叠放在焊接输送装置上；焊接输送装置用于加热焊带组和电池片并输送叠放好的焊带组和电池片，压紧装置用于压紧叠放好的焊带组和电池片，使得焊带组经焊接输送装置加热熔融的热熔层粘接在电池片上；热压装置位于焊接输送装置的上方，用于实施对粘接在一起的焊带组和电池片的热压；热压装置用于实施对粘接在一起的焊带组和电池片的热压，使得焊带组压接在电池片上。本发明通过焊带表面的热熔层将焊带压接至电池片上，从而获得高质量的电池串。
The invention provides a hot-press stringer and a hot-press stringer method, wherein the hot-press stringer includes a welding ribbon providing device, a battery slice providing device, a pressing device, a hot pressing device and a welding conveying device, wherein: The welding ribbon supplying device and the cell supplying device stack the preheated welding ribbon group and battery slices on the welding conveying device according to predetermined rules; the welding conveying device is used to heat the welding ribbon group and the battery slices and convey the stacked The belt group and the battery sheet, the pressing device is used to press the stacked welding belt group and the battery sheet, so that the welding belt group is heated and melted by the welding conveying device. The upper part of the device is used to perform hot pressing on the bonding ribbon group and the battery sheets; the hot pressing device is used for performing hot pressing on the bonding ribbon group and connected to the battery. In the present invention, the welding strip is crimped to the battery sheet through the hot melt layer on the surface of the welding strip, so as to obtain a high-quality battery string.
Description
Technical Field
The invention relates to the field of battery production, in particular to a hot-pressing series welding machine and a hot-pressing series welding method.
Background
The solder strip is an important structure for improving efficiency and reducing cost of the photovoltaic module, and the photovoltaic module is connected with a plurality of battery pieces in series through the solder strip to play a role in collecting current. In the prior art, an infrared welding mechanism is mostly adopted to weld the welding strip on the cell, the energy consumption of the mode is high, if more welding spots exist, the preparation cost of the welding strip and the photovoltaic module is increased, meanwhile, the shading area of the welding strip is increased, the optical loss is generated, and the power generation efficiency of the photovoltaic module is reduced; if the solder joint is less, on the one hand, it is difficult to confirm the position of setting up of pad, and on the other hand, the welding of solder strip is difficult to become flexible, and the battery piece can produce the subfissure because of the welding problem, and photovoltaic module's generating efficiency can reduce fast, leads to photovoltaic module complete failure even.
In view of this, the industry provides a novel solder strip with a hot-melt layer coated on the surface, and after the solder strip and the battery piece are stacked, the solder strip and the battery piece are hot-pressed, so that the solder strip can be directly pressed onto the battery piece through the molten hot-melt layer to obtain a high-quality battery string, and the light attenuation phenomenon caused by a battery assembly produced in an infrared welding mode is effectively avoided.
Conventional cell welding arrangements cannot use this type of weld tape to effect series connection of the cells. In view of this, it is necessary to develop a thermocompression stringer specifically for carrying out this type of bonding process.
Disclosure of Invention
In order to achieve the above technical object, a first aspect of the present invention provides a hot pressing stringer, which adopts the following technical solutions:
the utility model provides a hot pressing stringer uses the solder strip group to weld into the battery cluster with a plurality of battery pieces, welds the area of taking the package to have the cladding of predetermined length to have the area of welding of hot melt layer including many, and hot pressing stringer provides device, battery piece and provides device, closing device, hot press unit and welding conveyor including welding the area, wherein:
the welding strip providing device is used for providing the preheated welding strip group for the welding conveying device, the battery piece providing device is used for providing battery pieces for the welding conveying device, and the welding strip providing device and the battery piece providing device stack the preheated welding strip group and the battery pieces on the welding conveying device according to a preset rule;
the pressing device is used for pressing the stacked welding band group and the stacked battery piece, so that the hot melt layer of the welding band group, which is heated and melted by the welding conveying device, is bonded on the battery piece;
the hot pressing device is positioned above the welding conveying device and used for integrally pressing the welding strip group and the battery piece which are bonded together;
the hot-pressing device is used for carrying out hot pressing on the welding strip group and the battery piece which are bonded together, so that the welding strip group is integrally pressed on the battery piece.
Through the cooperation of the welding strip providing device, the battery piece providing device, the pressing device, the hot-pressing device and the welding conveying device, the hot-pressing series welding machine provided by the invention enables the welding strip to be pressed on the battery piece through the hot-melting layer on the surface of the welding strip, so that a high-quality battery string is formed.
In some embodiments, the solder ribbon supply apparatus includes a plurality of solder ribbon rolls, a solder ribbon heating mechanism, a solder ribbon cutting mechanism, and a solder ribbon drawing mechanism, wherein: the welding strip traction mechanism is used for clamping the welding strips on the plurality of welding strip coils and drawing the welding strips, so that the welding strips sequentially pass through the welding strip heating mechanism and the welding strip cutting mechanism to reach a preset position; the welding strip heating mechanism is used for heating the welding strip and the hot melt layer coated on the welding strip so as to enable the welding strip and the hot melt layer coated on the welding strip to have initial temperature; the welding strip cutting mechanism is used for cutting the welding strip to form a welding strip group with a plurality of preset lengths; the welding strip traction mechanism is also used for stacking the clamped welding strip group on the welding conveying device.
Through the cooperation of welding strip heating mechanism, welding strip shutdown mechanism and welding strip drive mechanism, welding strip providing device can roll up automatic acquisition from a plurality of welding strips and has the welding strip group of many welding strips of predetermined length to accomplish the heating back to welding strip group, stack welding strip group to welding conveyor on.
In some embodiments, the weld conveyor includes a conveyor belt and a heating plate; the conveying belt is used for conveying the stacked welding belt group and the stacked battery pieces; the heating plate is arranged below the conveying belt and used for heating the welding belt group to melt the hot melt layer coated on the welding belt.
The heating of the hot melt layer on the surface of the welding strip group is realized through the arrangement of the heating plate, and the welding strip and the battery piece are pressed and connected together by the pressing device conveniently.
In some embodiments, the heating plate comprises a first heating plate arranged below the conveying belt of the hot-pressing device and a second heating plate arranged on two sides of the first heating plate, and the temperature of the first heating plate is higher than that of the second heating plate.
Preheating of welding strip group and battery piece has been realized through the setting of second hot plate for welding strip group and battery piece are connected in advance, have realized the further heating of welding strip group and battery piece through setting up of first hot plate, and cooperation hot press unit accomplishes welding strip group and battery piece integral connection.
In some embodiments, the hot pressing device includes a pressing plate and a moving device for moving the pressing plate to be close to or away from the solder strip assembly and the battery piece.
The pressing plate is arranged to realize more complete pressing connection of the welding strip group and the battery piece.
In some embodiments, the solder ribbon heating mechanism is a hot air blowing heating mechanism, an infrared heating mechanism, an electric heating wire heating mechanism, a laser heating mechanism, or an electromagnetic heating mechanism.
The utility model provides a some simple structure, the welding strip heating mechanism of heating efficiency preferred, it can realize the high efficiency's of the hot melt layer of cladding on welding the area to welding the area high-speed preheating. The heating of the hot melt layer on the surface of the welding strip effectively avoids the phenomenon that the welding strip is deformed due to the shrinkage of the hot melt layer when the welding strip is stretched and laid.
The welding strip and the hot melt layer coated on the welding strip are preheated, so that the welding strip is prevented from being deformed due to shrinkage of the hot melt layer after the welding strip is straightened.
In some embodiments, the battery plate providing device includes a battery plate feeding mechanism, a battery plate conveying mechanism, a positioning platform, and a stacking mechanism, wherein: the battery piece feeding mechanism is used for feeding battery pieces in the battery box onto the battery piece conveying mechanism, the battery piece conveying mechanism is used for conveying the battery pieces onto the positioning platform, the positioning platform is used for positioning the battery pieces, and the stacking mechanism is used for picking up the battery pieces from the positioning platform and stacking the battery pieces onto the welding conveying device; and the positioning platform is provided with a regulating mechanism, and the regulating mechanism is used for regulating the battery pieces on the positioning platform.
Through the cooperation of the battery piece feeding mechanism, the battery piece conveying mechanism, the positioning platform and the stacking mechanism, the battery piece providing device realizes automatic material taking, conveying, positioning and arrangement and stacking of the battery pieces.
In some embodiments, the pressing device comprises a tool conveying mechanism, a tool stacking mechanism, a pressing tool and a tool removing mechanism, wherein: the tool conveying mechanism is arranged on the side of the welding conveying device and used for circularly conveying the pressing tool; the tool stacking mechanism is used for conveying the pressing tool on the tool conveying mechanism to the welding conveying device so as to press the stacked welding strip group and the stacked battery piece; the tool carrying-away mechanism is used for carrying the pressing tool from the welding conveying device back to the tool conveying mechanism. Or, closing device includes frock conveying mechanism, compresses tightly frock and removes from the mechanism, wherein: the tool conveying mechanism is arranged on the side of the welding conveying device, the discharge end of the tool conveying mechanism is close to the positioning platform, and the tool conveying mechanism is used for circularly conveying and pressing the tool; the stacking mechanism is also used for conveying the pressing tool on the discharge end of the tool conveying mechanism to the welding conveying device so as to press the stacked welding strip group and the stacked battery piece; the tool carrying-away mechanism is used for carrying the pressing tool from the welding conveying device back to the tool conveying mechanism.
Through setting up closing device, realized the used repeatedly to compressing tightly the frock. In the second embodiment, the stacking mechanism is reused, namely the stacking mechanism is used for stacking the battery pieces and can also be used for conveying the pressing tool on the discharge end of the tool conveying mechanism to the welding conveying device, so that the equipment cost is saved.
In some embodiments, the compaction tool comprises: the supporting plate, install at least one support bar in the supporting plate and install many tucking pins on the support bar, every tucking pin all corresponds to and compresses tightly one in the welding area group and welds the area.
The utility model provides a simple structure, convenient to use's compress tightly frock, it can guarantee all weld the area in the solder strip group and all compress tightly to the main grid line that corresponds on to the rosin joint risk has been reduced.
In some embodiments, the pressing device is fixedly connected to the conveying movable part of the welding conveying device, and after the pressing device presses the stacked welding strip group and the stacked battery pieces, the pressing device moves synchronously with the pressed welding strip group and the pressed battery pieces.
Through with the fixed setting of closing device on welding conveyor's the transport movable part to along with the welding area group and the battery piece synchronous movement who compress tightly, so, need not additionally to set up frock transport mechanism and frock circulation mechanism, can realize compressing tightly of welding area group and battery piece, reduced equipment cost.
In some embodiments, the hot pressing device is located at the rear of the pressing device, and after the pressing device completes the pressing of the welding strip group and the battery piece and leaves the welding strip group and the battery piece, the hot pressing device performs hot pressing on the welding strip group and the battery piece which are bonded together.
Through setting up hot press unit, closing device, guaranteed the joint strength between solder strip group and the battery piece to prevent to produce between closing device and the hot press unit and interfere.
In some embodiments, the solder strip cutting mechanism includes a clamping portion for clamping the solder strip and a cutting portion for cutting the solder strip clamped by the clamping portion. The hot-pressing series welding machine further comprises a series cutting device arranged at the blanking end of the welding and conveying device, and the series cutting device is used for cutting the battery strings.
Through the cooperation of clamping part and cutting off portion, realized cutting off of welding strip to realized the clamp of welding strip free end after the cutting off, prevented that the welding strip from rolling back or dropping. By arranging the string cutting device, the battery strings are cut, so that the battery strings with preset lengths are obtained.
The invention also provides a hot-pressing series welding method, which uses a welding strip group to weld a plurality of battery pieces into a battery string, wherein the welding strip group comprises a plurality of welding strips with preset lengths and thermal melting layers, and the hot-pressing series welding method comprises the following steps: providing a heated welding strip group and providing a battery piece; stacking the preheated welding strip group and the preheated battery plate on a welding conveying device according to a preset rule; the welding conveying device heats the welding strip group to melt the hot melting layer coated on the surface of the welding strip; compressing the stacked welding strip group and the battery piece to enable the hot melting layer of the welding strip group to be bonded on the battery piece; and hot-pressing the welding strip group and the battery piece which are bonded together to ensure that the welding strip group is pressed on the battery piece.
The hot-pressing series welding method of the invention directly presses the welding strip onto the battery piece through the hot-melting layer on the surface of the welding strip, thereby forming the battery string with high quality.
In some embodiments, providing the heated set of solder strips includes: clamping the welding strips on the plurality of welding strip coils and drawing the welding strips so that the welding strips sequentially pass through a heating station and a welding strip cutting station and then reach a preset position; heating the welding strip and the hot melt layer coated on the welding strip; the solder ribbon is cut to form a solder ribbon assembly including a plurality of solder ribbons having a predetermined length.
Automatic acquisition and automatic heating of the welding strip group are realized.
In some implementations, the set of solder ribbons and the battery piece that are thermally compression bonded together include: and completing the compression of the battery piece and the welding strip group before hot pressing, and carrying out hot pressing on the compressed welding strip group and the battery piece.
In some implementations, the stacking the preheated solder ribbon groups and the battery pieces onto the soldering conveyor according to a predetermined rule includes: the ith battery piece is stacked on the back half section of the ith welding strip group, the front half section of the (i + 1) th welding strip group is stacked on the ith battery piece, and i is any natural number greater than 0.
The stacking mode of the battery pieces arranged on the front side and the back side respectively aiming at the positive main grid line and the negative main grid line is provided, and the battery pieces connected in series can be conducted.
In some implementations, providing N +1 preheated solder ribbon packs, providing N battery pieces, and stacking the preheated solder ribbon packs and the battery pieces onto the soldering conveyor according to a predetermined rule includes: the rear half section of the 1 st welding strip group is stacked on the 1 st battery plate, and the front half section of the 1 st welding strip group is placed on the welding conveying device; the second half section of the ith welding strip group is stacked on the ith battery piece, the first half section of the ith welding strip group is stacked on the (i-1) th battery piece, wherein i is any natural number which is more than 1 and less than N + 1; the second half section of the (N + 1) th welding band group is placed on the welding conveying device, and the first half section of the (N + 1) th welding band group is stacked on the Nth battery piece.
The utility model provides a to just, the negative main grid line all sets up the mode of stacking at the battery piece at the back, guarantees that the battery piece that concatenates can switch on.
Drawings
Fig. 1 is a schematic structural diagram of a thermocompression stringer according to an embodiment of the present invention;
fig. 2 is a schematic view of stacking of battery plates and solder ribbon groups according to an embodiment of the present invention;
fig. 3 is a schematic view of stacking of battery plates and solder ribbon groups according to another embodiment of the present invention;
fig. 1 to 3 include:
the solder ribbon supply apparatus 10: the welding strip cutting device comprises a welding strip coil 11, a welding strip heating mechanism 12, a welding strip cutting mechanism 13 and a welding strip traction mechanism 14;
battery sheet supply device 20: the device comprises a battery piece feeding mechanism 21, a battery piece conveying mechanism 22, a positioning platform 23 and a stacking mechanism 24;
the pressing device 30: the tool conveying mechanism 31, the pressing tool 32 and the tool removing mechanism 33;
a welding conveyor 40;
a hot press device 50;
a string-cutting device 60;
a battery case 100.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The traditional battery piece welding device cannot use the welding strip group coated with the hot melt layer to implement serial connection of the battery pieces. In view of the above, it is necessary to develop a thermal compression stringer and a thermal compression stringer method specially used for performing the bonding process, which can perform the series connection of the battery cells using the solder ribbon assembly coated with the thermal melting layer.
The thermocompression bonding machine and the thermocompression bonding method provided by the present invention will be described in an exemplary manner by two embodiments.
First embodiment
As shown in fig. 1, the thermocompression stringer provided in this embodiment includes a solder strip providing device 10, a battery plate providing device 20, a pressing device 30, a thermocompression device 50, and a welding conveying device 40, wherein:
the welding strip providing device 10 is used for providing the preheated welding strip group to the welding conveying device 40, the battery piece providing device 20 is used for providing the battery pieces to the welding conveying device 40, and the welding strip providing device 10 and the battery piece providing device 20 stack the preheated welding strip group and the battery pieces on the welding conveying device 40 according to a preset rule.
The welding and conveying device 40 is used for heating the welding band group and the battery piece and conveying the stacked welding band group and the stacked battery piece, and the pressing device 30 is used for pressing the stacked welding band group and the stacked battery piece, so that the welding band group is bonded on the battery piece through the hot melting layer which is melted by heating. That is, the heated solder ribbon assembly can be adhered and positioned on the battery sheet by the melted hot melt layer on the surface thereof by the pressing of the pressing device 30.
The hot pressing device 50 is located above the welding and conveying device 40, and the hot pressing device 50 is used for performing hot pressing on the welding strip group and the battery piece which are bonded together, so that the welding strip group is completely pressed on the battery piece, and a final battery string is obtained.
As can be seen, by matching the solder strip providing device 10, the battery piece providing device 20, the pressing device 30, the hot-pressing device 50 and the welding conveying device 40, the hot-pressing stringer in the embodiment of the present invention presses the solder strip onto the battery piece through the hot-melt layer on the surface of the solder strip group, so as to obtain a high-quality battery string.
Optionally, the hot pressing device 50 is located at the rear end of the pressing device 30, and after the pressing device 30 completes pressing of the solder strip group and the battery piece and leaves the solder strip group and the battery piece, the hot pressing device 50 performs an integral hot pressing operation on the solder strip group and the battery piece which are bonded together.
With continued reference to fig. 1, optionally, the solder strip providing apparatus 10 includes a plurality of solder strip coils 11, a solder strip heating mechanism 12, a solder strip cutting mechanism 13, and a solder strip pulling mechanism 14, wherein: the solder strip pulling mechanism 14 is configured to clamp the solder strips on the plurality of solder strip coils 11 and pull the solder strips so that the solder strips sequentially pass through the solder strip heating mechanism 13 and the solder strip cutting mechanism 14 to a predetermined position. The solder strip heating mechanism 12 is used for heating the solder strip and the hot melt layer coated on the solder strip, the solder strip cutting mechanism 13 is used for cutting the solder strip to form a solder strip group with a plurality of preset lengths, and the solder strip traction mechanism 14 is also used for stacking the clamped solder strip group on the welding conveying device 40.
Optionally, the solder ribbon pulling mechanism 14 includes a plurality of jaws, each of which holds a solder ribbon and pulls the solder ribbon.
The welding conveying device 40 comprises a conveying belt and a heating plate; the conveying belt is used for conveying the stacked welding belt group and the stacked battery pieces; the heating plate is arranged below the conveying belt and used for heating the welding belt group to melt the hot melt layer coated on the welding belt.
Optionally, the temperature of the heating plate below the solder strip group may be set in a step-up state from the position of receiving the battery piece and the solder strip group to the position of the hot pressing device, and the temperature of the heating plate may be set in a step-down state from the position of the hot pressing device to the tail end of the solder conveying device 40.
Optionally, the heating plate includes setting up the first hot plate in hot press unit conveyer belt below and setting up the second hot plate in first hot plate both sides, and the temperature of first hot plate is higher than the temperature of second hot plate.
The hot-pressing device comprises a pressing plate and a moving device for driving the pressing plate to be close to or far away from the welding strip group and the battery piece.
The whole welding strip can be comprehensively pressed down by the pressing plate, and the welding strip is completely attached, pressed and adhered to the battery piece.
Optionally, a heating rod can be arranged on the pressing plate, and the pressing plate is heated through the heating rod, so that further heating can be achieved for the welding strip group and the battery piece, and a better crimping effect is guaranteed. The hot-pressing device presses and connects the welding strip group and the battery piece together, the hot-pressing device can only provide pressing force, or the hot-pressing device can heat the welding strip group and the battery piece through the pressing plate while providing the pressing force.
The ribbon heating mechanism 12 may employ various known heating mechanisms, such as a hot air blowing heating mechanism, an infrared heating mechanism, an electric heating wire heating mechanism, a laser heating mechanism, an electromagnetic heating mechanism, and the like.
The welding strip and the hot melt layer coated on the welding strip are preheated, so that the welding strip is prevented from being deformed due to shrinkage of the hot melt layer after the welding strip is straightened.
Optionally, the solder strip cutting mechanism 13 includes a clamping portion for clamping the solder strip and a cutting portion for cutting the solder strip clamped by the clamping portion. Through the cooperation of clamping part and cutting off portion, not only realized cutting off of welding strip to the clamp of welding strip free end after having realized cutting off prevents that the welding strip from rolling back or dropping.
Optionally, the thermal compression stringer according to the embodiment of the present invention further includes a string cutting device 60 disposed at the blanking end of the welding conveyor 40, and the string cutting device 60 is configured to cut the battery string, so as to obtain the battery string with a predetermined length.
With continued reference to fig. 1, the battery sheet supply device 20 may optionally include a battery sheet feeding mechanism 21, a battery sheet conveying mechanism 22, a positioning platform 23, and a stacking mechanism 24, wherein:
the battery piece feeding mechanism 21 is used for feeding the battery pieces in the battery box 100 onto the battery piece conveying mechanism 22, and the battery piece conveying mechanism 22 is used for conveying the battery pieces onto the positioning platform 23.
The positioning platform 23 is used for implementing positioning of the battery piece, optionally, a camera is arranged above the positioning platform 23, and the camera photographs the battery piece to acquire the position information of the battery piece on the positioning platform, so that the battery piece is positioned.
The stacking mechanism 24 picks up the battery pieces from the positioning platform 23 based on the position information of the battery pieces and stacks the picked-up battery pieces onto the welding conveyor 40. The stacking mechanism 24 may employ various known transfer devices with gripping and suction functions, such as a robot with a gripper, an electromagnetic chuck, or a suction cup.
Optionally, a regulating mechanism is further disposed on the positioning platform 23, and the regulating mechanism is configured to regulate the cells on the positioning platform, so as to adjust the positions of the cells.
With continued reference to fig. 1, in the embodiment of fig. 1, the pressing device 30 includes a tool conveying mechanism 31, a pressing tool 32, and a tool removing mechanism 33, wherein: the tooling conveying mechanism 31 is arranged on the side of the welding conveying device 40, and the discharge end of the tooling conveying mechanism 31 is close to the positioning platform 23.
The tool conveying mechanism 31 is used for circularly conveying the pressing tool 32.
The stacking mechanism 24 of the battery plate supply device 20 is also used for conveying the pressing tool 32 on the discharge end of the tool conveying mechanism 31 to the welding conveying device 40 so as to press the stacked welding strip group and the battery plate.
The tool carrying-away mechanism 33 is used for carrying the pressing tool 32 from the welding conveying device 40 back to the tool conveying mechanism 31 after the pressing is completed, so that the pressing tool 32 can be recycled.
Of course, in other embodiments, instead of the stacking mechanism 24 of the battery plate supply device 20, a special tool stacking mechanism may be provided to transport the pressing tool 32 on the discharge end of the tool conveying mechanism 31 to the welding conveying device 40.
Optionally, the pressing tool 32 includes: the backup pad, install at least one support bar in the backup pad and install many tucks on the support bar, every tuck all corresponds and compresses tightly one in the welding area group and welds the area to guarantee that each welding area in welding area group all corresponds and compresses tightly on a main gridline of battery piece.
The pressing pin can realize the local connection of the welding band group and the battery piece in advance, and the hot pressing device can realize the integral pressing connection of the welding band group and the battery piece.
Optionally, the compressing device may also be fixedly connected to the movable conveying part of the welding and conveying device 40, and after the compressing device compresses the stacked welding strip group and the battery piece, the compressing device moves synchronously with the compressed welding strip group and the compressed battery piece. Therefore, the pressing of the welding strip group and the battery piece can be realized without additionally arranging a tool carrying mechanism and a tool circulating mechanism, and the equipment cost is reduced.
Second embodiment
The thermocompression series welding method provided in this embodiment can be implemented by the thermocompression series welding machine in the first embodiment, and specifically, the method for welding a battery string includes:
and providing the heated welding strip group, and providing the battery piece.
And stacking the preheated welding strip group and the battery plate on a welding conveying device according to a preset rule.
The welding conveying device is used for heating the welding strip group and the battery piece and conveying the stacked welding strip group and the battery piece,
and compressing the stacked welding strip group and the battery piece, so that the hot melt layer heated and melted by the welding strip group through the welding conveying device is bonded on the battery piece.
And under the heating state of welding conveying, hot-pressing the welding strip group and the battery piece which are bonded together, so that the welding strip group is pressed on the battery piece.
Optionally, the providing of the heated solder strip group specifically includes:
clamping the welding strips on the plurality of welding strip coils and drawing the welding strips so that the welding strips sequentially pass through a heating station and a welding strip cutting station and then reach a preset position;
the welding strip and the hot melt layer coated on the welding strip are heated by a welding strip heating mechanism at a heating station.
The solder ribbon is cut by a solder ribbon cutting mechanism at a solder ribbon cutting station to form a solder ribbon group including a plurality of solder ribbons having a predetermined length.
Optionally, the solder strip assembly and the battery piece which are thermally pressed and bonded together include: and completing the compaction of the battery piece and the welding strip group before hot pressing, canceling the compaction of a compaction station on the battery piece and the welding strip group, and then carrying out hot pressing on the welding strip group and the battery piece which are compacted.
As will be understood by those skilled in the art, for a conventional battery plate, in which the front and back surfaces of the battery plate are provided with the bus bars, as shown in fig. 2, the preheated solder ribbon groups and the battery plate are stacked on the soldering conveyor according to a predetermined rule, specifically:
the ith battery piece is stacked on the back half section of the ith welding strip group, the front half section of the (i + 1) th welding strip group is stacked on the ith battery piece, and i is any natural number greater than 0.
The welding band group and the battery pieces are stacked according to the rule, so that the conduction between the battery pieces which are connected in series can be ensured.
In addition to the traditional battery piece with the main grid lines on the front and the back, a back-contact battery piece with the main grid lines only on the back has appeared in the industry in recent years, that is, the positive and negative main grid lines are both arranged on the back of the battery piece. As shown in fig. 3, a total of N +1 preheated solder ribbon groups and N battery pieces are stacked, where N is 4 in fig. 3. To the back of body contact battery piece, with the welding of preheating take group and battery piece stack to welding conveyor according to predetermined rule after, specifically do:
the second half section of the 1 st welding strip group is stacked on the 1 st cell, and the first half section of the 1 st welding strip group is placed on the welding conveying device.
The second half section of the ith welding strip group is stacked on the ith battery piece, the first half section of the ith welding strip group is stacked on the (i-1) th battery piece, wherein i is any natural number which is larger than 1 and smaller than N + 1.
The second half section of the (N + 1) th welding band group is placed on the welding conveying device, and the first half section of the (N + 1) th welding band group is stacked on the Nth battery piece.
According to the regular stacking of the welding strip group and the battery pieces, the conduction of each back contact battery piece which is connected in series can be ensured. Of course, during the stacking process, the battery pieces are placed on the welding conveying device with the back faces upward.
And after the final welding is finished, the 1 st welding strip group is the head welding strip group of the battery string, and the (N + 1) th welding strip group is the tail welding strip group of the battery string.
It should be noted that various optional implementations in the foregoing first embodiment are also applicable to this embodiment, and are not described herein again.
The invention has been described above with a certain degree of particularity. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that come within the true spirit and scope of the invention are desired to be protected. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.
Claims (17)
1. The utility model provides a hot pressing stringer uses the solder strip group to weld into the battery cluster with a plurality of battery pieces, welds the area of taking the package to have the area of welding of hot melt layer including many claddings that have predetermined length, a serial communication port, hot pressing stringer is including welding area providing device, battery piece providing device, closing device, hot press unit and welding conveyor, wherein:
the welding strip providing device is used for providing a preheated welding strip group for the welding conveying device, the battery piece providing device is used for providing battery pieces for the welding conveying device, and the welding strip providing device and the battery piece providing device stack the preheated welding strip group and the battery pieces on the welding conveying device according to a preset rule;
the welding and conveying device is used for heating the welding strip group and the battery piece and conveying the stacked welding strip group and the stacked battery piece, and the pressing device is used for pressing the stacked welding strip group and the stacked battery piece so that the hot melting layer of the welding strip group, which is heated and melted by the welding and conveying device, is bonded on the battery piece;
the hot-pressing device is used for integrally pressing the welding strip group and the battery piece which are bonded together, so that the welding strip group is pressed on the battery piece.
2. The thermocompression stringer according to claim 1, wherein said solder ribbon supplying device comprises a plurality of solder ribbon coils, a solder ribbon heating mechanism, a solder ribbon cutting mechanism, and a solder ribbon drawing mechanism, wherein:
the welding strip traction mechanism is used for clamping a plurality of welding strips on the welding strip coil and drawing the welding strips, so that the welding strips sequentially pass through the welding strip heating mechanism and the welding strip cutting mechanism to reach a preset position;
the welding strip heating mechanism is used for heating the welding strip hot melting layer so that the welding strip and the hot melting layer coated on the welding strip have initial temperatures;
the welding strip cutting mechanism is used for cutting the welding strips to form a welding strip group comprising a plurality of welding strips with preset lengths;
the welding strip traction mechanism is also used for stacking the clamped welding strip group on the welding conveying device.
3. The hot press stringer according to claim 1, wherein the welding conveyor includes a conveyor belt and a heating plate;
the conveying belt is used for conveying the stacked welding belt group and the stacked battery pieces;
the heating plate is arranged below the conveying belt and used for heating the welding belt group to melt the hot melt layer coated on the welding belt.
4. The hot press stringer according to claim 3, wherein the heating plate includes a first heating plate disposed below the belt of the hot press apparatus and a second heating plate disposed at both sides of the first heating plate, and the temperature of the first heating plate is higher than that of the second heating plate.
5. The thermocompression stringer according to claim 1, wherein said thermocompression device comprises a pressing plate and a moving device for moving said pressing plate closer to or away from the bonding pad set and the battery piece.
6. The thermocompression stringer according to claim 2, wherein said ribbon heating mechanism is a hot air blowing heating mechanism, an infrared heating mechanism, an electric heating wire heating mechanism, a laser heating mechanism, or an electromagnetic heating mechanism.
7. The thermocompression stringer according to claim 1, wherein said cell supply device comprises a cell feeding mechanism, a cell conveying mechanism, a positioning platform, and a stacking mechanism, wherein:
the battery piece feeding mechanism is used for feeding battery pieces in a battery box onto the battery piece conveying mechanism, the battery piece conveying mechanism is used for conveying the battery pieces onto a positioning platform, the positioning platform is used for positioning the battery pieces, and the stacking mechanism is used for picking up the battery pieces from the positioning platform and stacking the battery pieces onto the welding and conveying device;
and the positioning platform is provided with a regulating mechanism, and the regulating mechanism is used for regulating the battery pieces on the positioning platform.
8. The thermocompression stringer according to claim 7, wherein:
closing device includes that frock conveying mechanism, frock stack mechanism, compress tightly frock and frock remove from the mechanism, wherein:
the tool conveying mechanism is arranged on the side of the welding conveying device and used for circularly conveying the pressing tool;
the tool stacking mechanism is used for conveying the pressing tool on the tool conveying mechanism to the welding conveying device so as to press the stacked welding strip group and the stacked battery pieces;
the tool moving-away mechanism is used for moving the pressing tool from the welding conveying device back to the tool conveying mechanism; or
Closing device includes frock conveying mechanism, compresses tightly frock and removes from mechanism, wherein:
the tool conveying mechanism is arranged on the side of the welding conveying device, the discharge end of the tool conveying mechanism is close to the positioning platform, and the tool conveying mechanism is used for circularly conveying the pressing tool;
the stacking mechanism is also used for conveying the pressing tool on the discharge end of the tool conveying mechanism to the welding conveying device so as to press the stacked welding strip group and the stacked battery pieces;
the tool moving-away mechanism is used for moving the pressing tool from the welding conveying device back to the tool conveying mechanism.
9. The hot press stringer according to claim 8, wherein said pressing tool comprises: the backup pad, install at least one support bar in the backup pad and install many tucking pins on the support bar, every the tucking pin all corresponds and compresses tightly weld a welding strip in the area group.
10. The thermocompression stringer according to claim 1, wherein said pressing device is fixedly connected to the movable conveying part of said welding and conveying device, and said pressing device presses the stacked solder ribbon group and the battery piece and then moves synchronously with the pressed solder ribbon group and the battery piece.
11. The hot-pressing stringer according to claim 1, wherein the hot-pressing device is located at a rear end of the pressing device, and the hot-pressing device performs hot pressing on the bonding tape set and the battery piece after the pressing device completes the pressing of the bonding tape set and the battery piece and leaves the bonding tape set and the battery piece.
12. The thermocompression stringer according to claim 1, wherein:
the solder strip cutting mechanism comprises a clamping portion and a cutting portion, wherein the clamping portion is used for clamping a solder strip, and the cutting portion is used for cutting off the solder strip clamped by the clamping portion.
The hot-pressing stringer also comprises a stringer arranged at the blanking end of the welding and conveying device, and the stringer is used for cutting the battery string.
13. A hot-pressing series welding method is characterized in that a plurality of battery pieces are welded into a battery string by using a welding band set, the welding band set comprises a plurality of welding bands which have preset lengths and are coated with hot melting layers, and the hot-pressing series welding method comprises the following steps:
providing a preheated welding strip group and providing a battery piece;
stacking the preheated welding strip group and the battery plate on a welding conveying device according to a preset rule;
the welding conveying device heats the welding strip group to melt the hot melt layer coated on the surface of the welding strip;
compressing the stacked welding strip group and the battery piece to ensure that the welding strip group is bonded on the battery piece through the molten hot melt layer;
and the welding strip group and the battery piece are bonded together through hot pressing, so that the whole welding strip group is pressed on the battery piece in a pressing mode.
14. The method of thermal tandem bonding of claim 10, wherein the providing the heated ribbon assembly comprises:
clamping the welding strips on the plurality of welding strip coils and drawing the welding strips so that the welding strips sequentially pass through a heating station and a welding strip cutting station and then reach a preset position;
heating the welding strip and the hot melt layer coated on the welding strip;
cutting the solder strip to form a solder strip group including a plurality of solder strips having a predetermined length;
15. the thermal tandem bonding method of claim 10, wherein the bonding tape assembly and the battery piece that are thermally compression bonded together comprise:
and completing the compression of the battery piece and the welding strip group before the hot pressing, and carrying out hot pressing on the welding strip group and the battery piece after the compression is completed.
16. The method of thermal tandem bonding according to claim 10, wherein the stacking the preheated bonding ribbon assembly and the battery plate on the bonding conveyor according to a predetermined rule comprises:
the ith battery piece is stacked on the back half section of the ith welding strip group, the front half section of the (i + 1) th welding strip group is stacked on the ith battery piece, and i is any natural number greater than 0.
17. The method of tandem hot press bonding as claimed in claim 10, wherein providing N +1 preheated solder ribbon packs and providing N battery plates, said stacking the preheated solder ribbon packs and battery plates on the bonding conveyor according to a predetermined rule comprises:
the second half section of the 1 st welding strip group is stacked on the 1 st cell, and the first half section of the 1 st welding strip group is placed on the welding conveying device;
the second half section of the ith welding strip group is stacked on the ith battery piece, the first half section of the ith welding strip group is stacked on the (i-1) th battery piece, wherein i is any natural number which is more than 1 and less than N + 1;
the second half section of the (N + 1) th welding band group is placed on the welding conveying device, and the first half section of the (N + 1) th welding band group is stacked on the Nth battery piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210109077.7A CN114447158B (en) | 2022-01-28 | 2022-01-28 | Hot-press string welding machine and hot-press string welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210109077.7A CN114447158B (en) | 2022-01-28 | 2022-01-28 | Hot-press string welding machine and hot-press string welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114447158A true CN114447158A (en) | 2022-05-06 |
| CN114447158B CN114447158B (en) | 2025-09-30 |
Family
ID=81372446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210109077.7A Active CN114447158B (en) | 2022-01-28 | 2022-01-28 | Hot-press string welding machine and hot-press string welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114447158B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770118A (en) * | 2022-03-17 | 2022-07-22 | 无锡奥特维科技股份有限公司 | A kind of battery string welding equipment and welding method |
| CN114833504A (en) * | 2022-07-05 | 2022-08-02 | 江苏小牛自动化设备有限公司 | Battery string preparation method and battery string welding equipment |
| US12199208B1 (en) | 2023-08-09 | 2025-01-14 | Zhejiang Jinko Solar Co., Ltd. | Method for welding cell strings and series welding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070017395A1 (en) * | 2005-07-22 | 2007-01-25 | Neri Joel D | Method and apparatus for uniformly heating a substrate |
| CN108807248A (en) * | 2018-06-11 | 2018-11-13 | 泰州隆基乐叶光伏科技有限公司 | A kind of stamping device realized substrate welding and bonded with cell piece |
| CN217114417U (en) * | 2022-01-28 | 2022-08-02 | 无锡奥特维科技股份有限公司 | Hot-pressing series welding machine |
-
2022
- 2022-01-28 CN CN202210109077.7A patent/CN114447158B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070017395A1 (en) * | 2005-07-22 | 2007-01-25 | Neri Joel D | Method and apparatus for uniformly heating a substrate |
| CN108807248A (en) * | 2018-06-11 | 2018-11-13 | 泰州隆基乐叶光伏科技有限公司 | A kind of stamping device realized substrate welding and bonded with cell piece |
| CN217114417U (en) * | 2022-01-28 | 2022-08-02 | 无锡奥特维科技股份有限公司 | Hot-pressing series welding machine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770118A (en) * | 2022-03-17 | 2022-07-22 | 无锡奥特维科技股份有限公司 | A kind of battery string welding equipment and welding method |
| CN114770118B (en) * | 2022-03-17 | 2025-04-04 | 无锡奥特维科技股份有限公司 | Battery string welding equipment and welding method |
| CN114833504A (en) * | 2022-07-05 | 2022-08-02 | 江苏小牛自动化设备有限公司 | Battery string preparation method and battery string welding equipment |
| US12199208B1 (en) | 2023-08-09 | 2025-01-14 | Zhejiang Jinko Solar Co., Ltd. | Method for welding cell strings and series welding machine |
| AU2023258331A1 (en) * | 2023-08-09 | 2025-02-27 | Jinko Solar Co., Ltd. | Method for welding cell strings and series welding machine |
| AU2023258331B2 (en) * | 2023-08-09 | 2025-07-10 | Jinko Solar Co., Ltd. | Method for welding cell strings and series welding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114447158B (en) | 2025-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114447158B (en) | Hot-press string welding machine and hot-press string welding method | |
| CN105895733B (en) | The full-automatic stitch welding machine of solar cell string | |
| CN112490330B (en) | Battery string production line and battery string production equipment | |
| CN106424996B (en) | Lamination stringer | |
| JP2013041888A (en) | Apparatus and method for assembling solar battery cell, and program | |
| CN115207166B (en) | A battery string manufacturing method and string manufacturing equipment | |
| CN113814596B (en) | Welding method and welding equipment for collector belt of laminated tile assembly | |
| CN111244005A (en) | Feeding method and string welding device | |
| JPH09509013A (en) | Method and apparatus for interconnecting solar cells | |
| CN114310075B (en) | Solar cell welding method, cell string, cell assembly and welding equipment | |
| CN108687418B (en) | Soldering ribbon connection method of a solar cell | |
| CN114725228B (en) | Battery unit, battery string, preparation method and device of battery unit and battery string monomer | |
| CN115036392A (en) | Welding strip film pasting device, film pasting method and battery string production equipment | |
| WO2024040988A1 (en) | Photovoltaic cell string manufacturing apparatus | |
| CN108161328A (en) | High speed photovoltaic module production equipment and high speed photovoltaic module production method | |
| CN217114417U (en) | Hot-pressing series welding machine | |
| CN116885027A (en) | Battery string preparation method and battery string preparation equipment | |
| CN115295685B (en) | Method for fixedly connecting battery strings, pressing tool assembly and curing device | |
| CN115763329A (en) | A battery string production equipment and production method | |
| CN214123899U (en) | Battery string production line and battery string production equipment | |
| CN221466596U (en) | Double-sided tectorial membrane battery cluster group cluster equipment | |
| CN114770118A (en) | A kind of battery string welding equipment and welding method | |
| CN212209527U (en) | Welding strip feeding device and battery string preparation device | |
| JP2013041889A (en) | Apparatus and method for assembling solar battery cell, and program | |
| CN219626613U (en) | Battery string production equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |