CN114864741A - Battery string repairing device and repairing method - Google Patents

Battery string repairing device and repairing method Download PDF

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Publication number
CN114864741A
CN114864741A CN202210405092.6A CN202210405092A CN114864741A CN 114864741 A CN114864741 A CN 114864741A CN 202210405092 A CN202210405092 A CN 202210405092A CN 114864741 A CN114864741 A CN 114864741A
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CN
China
Prior art keywords
battery
disassembled
string
welding
battery string
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Granted
Application number
CN202210405092.6A
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Chinese (zh)
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CN114864741B (en
Inventor
周希巍
王恒
王群
沈博
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Wuxi Autowell Technology Co Ltd
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Wuxi Autowell Technology Co Ltd
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Priority to CN202210405092.6A priority Critical patent/CN114864741B/en
Priority claimed from CN202210405092.6A external-priority patent/CN114864741B/en
Publication of CN114864741A publication Critical patent/CN114864741A/en
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Publication of CN114864741B publication Critical patent/CN114864741B/en
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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
    • 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
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • 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
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/06—Solder feeding devices; Solder melting pans
    • B23K3/0607—Solder feeding 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
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08—Auxiliary devices therefor
    • B23K3/087—Soldering or brazing jigs, fixtures or clamping means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
    • H01L21/67739—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations into and out of processing chamber
    • H01L21/67742—Mechanical parts of transfer devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
    • H01L21/67739—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations into and out of processing chamber
    • H01L21/6776—Continuous loading and unloading into and out of a processing chamber, e.g. transporting belts within processing chambers
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention provides a battery string repairing device and a battery string repairing method, wherein the battery string repairing device comprises a repairing platform, a welding strip traction mechanism, a heating welding mechanism and a battery piece feeding mechanism, wherein: the repairing platform bears the battery string to be repaired, and the heating welding mechanism is matched to desolder and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string; the battery piece feeding mechanism feeds the replacement battery pieces onto the repair platform; the welding strip traction mechanism is used for dragging and stacking the welding strip at the disassembling end of the first disassembled battery string and the welding strip at the disassembling end of the second disassembled battery string to corresponding positions of the replaced battery pieces; the heating welding mechanism welds the stacked disassembled end welding strips to the corresponding replacement battery plate. The battery string repairing device provided by the invention realizes automatic disassembly of defective battery pieces in the battery string to be repaired and automatic welding of replacement battery pieces, and greatly improves the repairing efficiency and quality of the battery string.

Description

Battery string repairing device and repairing method
Technical Field
The invention relates to the field of battery production, in particular to a battery string repair device and a battery string repair method.
Background
When the defects such as insufficient soldering, hidden cracking and the like occur in the battery string, the battery string needs to be repaired, and for the defective battery piece which can be repaired through the insufficient soldering, the insufficient soldering of the insufficient solder points in the defective battery piece needs to be repaired; for the conditions of seriously-welded defective battery pieces or hidden-cracked defective battery pieces and the like, the operation of replacing the defective battery pieces is required to be implemented, namely the defective battery pieces are removed and replaced by good battery pieces.
The traditional replacement repair mode is that the defect battery piece and the welding strip on the defect battery piece are welded together manually by using electric soldering iron, and then the replacement battery piece and the welding strip welded together are welded together again by using the electric soldering iron. The traditional replacement repair mode has low repair efficiency and unstable repair quality, and influences productivity.
Disclosure of Invention
In order to solve the problems of low efficiency and unstable repair quality of the traditional replacement repair mode, the invention provides a battery string repair device in a first aspect, and the detailed technical scheme is as follows:
the utility model provides a device is reprocessed to battery cluster, includes reprocesses platform, welds area drive mechanism, adds thermowelding mechanism and battery piece feed mechanism, wherein:
the repairing platform is used for bearing the battery string to be repaired, and is matched with the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired and a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
the battery piece feeding mechanism is used for feeding replacement battery pieces onto the repair platform to replace the defective battery pieces;
the welding strip traction mechanism is used for dragging and stacking the welding strip at the disassembling end of the first disassembled battery string and the welding strip at the disassembling end of the second disassembled battery string to corresponding positions of the replaced battery pieces;
and the heating welding mechanism welds the stacked disassembled end welding strips to the corresponding replacement battery pieces to obtain the repaired battery string.
Through the matching of the repair platform, the battery piece feeding mechanism, the welding strip traction mechanism and the heating welding mechanism, the battery string repair device realizes the automatic disassembly of the defective battery pieces in the battery string to be repaired, and automatically welds the replacement battery pieces to the positions left after the defective battery pieces are disassembled. Compared with the traditional replacement repair mode, the repair method greatly improves the repair efficiency of the battery string and ensures the stability of the repair quality.
In some embodiments, the rework platform includes a mount, a middle carrier, a first side carrier and a second side carrier, wherein: the middle bearing table is fixedly arranged on the mounting seat, the first side bearing table is movably connected to the mounting seat and is positioned on the first side of the middle bearing table, and the first side bearing table is configured to be capable of translating towards or away from the middle bearing table and ascending and descending in the vertical direction; the second side bearing table is movably connected to the mounting seat and positioned on the second side of the middle bearing table, and the second side bearing table is configured to be capable of translating towards or away from the middle bearing table and ascending and descending in the vertical direction; the middle bearing platform is used for bearing the defective battery piece or replacing the battery piece, the first side bearing platform is used for bearing the battery piece located on the first side of the defective battery piece, and the second side bearing platform is used for bearing the battery piece located on the second side of the defective battery piece.
Through setting up the platform of reprocessing into including middle plummer to and can be for first side plummer, the second side plummer of middle plummer translation and lift, on the one hand, make the platform of reprocessing can cooperate with heating welding mechanism to disassemble the defect battery piece in waiting to reprocess the battery string is automatic to get off, thereby obtain first battery string of disassembling and the battery string is disassembled to the second. On the other hand for the repair platform can cooperate and weld the end solder strip of disassembling of string of the first battery of disassembling and the end solder strip of disassembling of the second battery of disassembling to pull and stack to the corresponding position department of replacement battery piece with welding the tape drive mechanism.
In some embodiments, the bearing surface of the middle bearing table is provided with an adsorption hole, and the bearing surface adsorbs the defective battery piece or the replacement battery piece through the adsorption hole; the end part of the first side bearing table close to the middle bearing table is provided with a first side adsorption plate, and the first side adsorption plate is used for bearing and adsorbing adjacent battery pieces on the first side of the defective battery piece; and a second side adsorption plate is arranged at the end part of the second side bearing table close to the middle bearing table and used for bearing and adsorbing the adjacent battery piece positioned at the second side of the defective battery piece.
The first side adsorption plate of middle plummer, first side plummer, the second side adsorption plate of second side plummer adsorb respectively and live defect battery piece or replacement battery piece to and be located the battery piece that borders on of defect battery piece first side, second side, thereby avoid taking place the drunkenness and influence the welding precision of reprocessing at the battery piece of reprocessing platform removal in-process, guarantee to disassemble the smooth implementation of process and replacement welding process.
In some embodiments, a heating assembly is disposed in the intermediate carrier stage, and the heating assembly is used for heating the defective battery piece or the replacement battery piece carried on the intermediate carrier stage.
Through set up heating element in middle plummer, realized the heating to defect battery piece or replacement battery piece to help dismantling or replacement battery piece and the welding of welding the area to defect battery piece and welding area, further promoted and dismantled and welding efficiency.
In some embodiments, the solder strip pulling mechanism comprises a first solder strip pulling mechanism and a second solder strip pulling mechanism, wherein: welding strips are welded on the upper surface and the lower surface of the battery piece in the battery string to be repaired, and the first welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the first disassembled battery string onto the middle bearing table; the battery piece feeding mechanism feeds the replacement battery pieces and stacks the replacement battery pieces onto the dismantling end welding strips of the first dismantling battery strings; the second welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the second disassembled battery string onto the replacement battery piece; or the battery pieces in the battery string to be repaired are IBC battery pieces, the battery piece feeding mechanism feeds the replacement battery pieces onto the middle bearing table, and the first welding strip traction mechanism is used for drawing the welding strips at the disassembly end of the first disassembled battery string and laying the welding strips on the replacement battery pieces; and the second welding strip traction mechanism is used for drawing and laying the welding strip at the disassembling end of the second disassembled battery string onto the replacement battery piece.
Through setting the solder strip drive mechanism to include first solder strip drive mechanism and second solder strip drive mechanism to under battery piece feed mechanism and the cooperation action of reprocessing the platform, two solder strip drive mechanisms can pull respectively the end solder strip of disassembling battery cluster and the end solder strip of disassembling battery cluster of second and stack to the corresponding position department of replacement battery piece fast, improve battery cluster and reprocess efficiency.
In some embodiments, the battery string repairing device further comprises a vision device, the vision device is arranged above the middle bearing table and is used for determining the position of the replaced battery piece, and the solder strip traction mechanism is used for respectively dragging and stacking the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to the corresponding positions of the replaced battery piece according to the position of the replaced battery piece.
Through setting up vision device, realized the location to the replacement battery piece to make solder strip drive mechanism can accurately pull the end solder strip of disassembling of first disassembling battery cluster and the end solder strip of disassembling of second disassembling battery cluster and stack to the corresponding position of replacement battery piece on respectively, thereby guarantee welding accuracy.
In some embodiments, the battery string rework device further comprises a flux application mechanism for applying flux to the detached-end solder strips of the first detached battery string and the detached-end solder strips of the second detached battery string prior to soldering.
Through setting up scaling powder coating mechanism, realized dismantling the automatic coating of scaling powder to the end welding area of dismantling of first battery cluster and the second and disassemble the end welding area of dismantling the battery cluster to welding efficiency, welding quality have been promoted.
In some embodiments, the cell sheet feeding mechanism comprises a first picking mechanism, a collating mechanism, and a second picking mechanism, wherein: the first picking mechanism is used for picking the replacement battery piece from the battery box and carrying the picked replacement battery piece to the arranging mechanism; the regulating mechanism is used for regulating and replacing the battery pieces; the second picking mechanism is used for taking the defective cell away from the repair platform, picking the regulated replacement cell from the regulating mechanism and carrying the regulated replacement cell to the repair platform.
Through first pickup mechanism, regular mechanism and second pickup mechanism, replacement battery piece can be picked up from the battery box automatically to battery piece feeding mechanism to accomplish the regular back to the replacement battery piece, will replace the battery piece and expect to reprocessing the platform automatically, and realize the automatic unloading to the defect battery piece of disassembling.
In some embodiments, the battery string rework device further comprises a tin supplement mechanism; the tin supplementing mechanism is arranged on the side of the repair platform and is used for supplementing tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or the tin supplementing mechanism is arranged at the side of the battery piece feeding mechanism and is used for supplementing tin for replacing the pad points of the battery pieces.
Through setting up mend tin mechanism, realized dismantling the end welding strip of disassembling of battery cluster and the second and disassembled the end welding strip's of battery cluster automatic mend tin, and/or mend tin to the automation of the welding plate point of replacement battery piece, guarantee that the welding strip after the desoldering can be in the same place with the smooth welding of replacement battery piece, and then guaranteed to reprocess welded quality.
In some embodiments, the battery string repairing device further comprises a welding tool picking and placing mechanism, wherein the welding tool picking and placing mechanism is used for pressing the welding tool onto the disassembling end welding strip after the disassembling end welding strip needing to be laid on the upper surface of the replacing battery piece is laid on the replacing battery piece, and removing the welding tool after welding.
The welding tool picking and placing mechanism is arranged, so that automatic carrying of the welding tool is achieved, the welding tool is used for pressing the welding strip and then performing subsequent welding operation, and welding of the welding strip and the battery piece is facilitated.
The invention also provides a battery string repairing method, which comprises the following steps:
feeding the battery string to be repaired to a repair platform;
controlling the repair platform and the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired and a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
controlling a battery piece feeding mechanism to feed replacement battery pieces onto the repair platform so as to replace the defective battery pieces;
controlling a solder strip traction mechanism to respectively pull and stack the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to corresponding positions of the replaced battery pieces;
and controlling the heating welding mechanism to weld the stacked disassembled end welding strips to the corresponding replacement battery pieces.
The battery string repairing method provided by the invention realizes automatic disassembly of the defective battery piece in the battery string to be repaired, and automatically welds the replacement battery piece to the position vacated after the defective battery piece is disassembled, so that the battery string repairing efficiency is greatly improved, and the welding quality is ensured to be stable.
In some embodiments, controlling the rework platform and the heating welding mechanism to unweld and separate a defective cell piece in the battery string to be reworked from a welding ribbon welded on the defective cell piece includes: controlling a heating and welding mechanism to heat the defective battery piece, so that the welding strip welded on the defective battery piece is welded with the defective battery piece in a desoldering mode; controlling the first side bearing table to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle bearing table in a translation mode, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and obtaining a first disassembled battery string; and controlling the bearing table at the second side to drive the battery piece positioned at the second side of the defective battery piece to move away from the middle bearing table in a translation manner, so that the welding strip welded on the adjacent battery piece at the second side of the defective battery piece is separated from the defective battery piece, and obtaining a second disassembled battery string.
Through the control of the matching action of the repair platform and the heating and welding mechanism, the automatic disassembly of the defective battery pieces in the battery string to be repaired is realized, so that a first disassembled battery string and a second disassembled battery string are obtained.
In some embodiments, the welding strips are welded on the upper surface and the lower surface of the battery piece in the battery string to be repaired, the battery piece feeding mechanism is controlled to feed the replacement battery piece onto the repairing platform to replace the defective battery piece, and the welding strip traction mechanism is controlled to respectively pull and stack the disassembling end welding strip of the first disassembled battery string and the disassembling end welding strip of the second disassembled battery string to corresponding positions of the replacement battery piece, including: controlling a first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the first welding strip and the first side bearing table towards the middle bearing table, and drawing and laying the disassembled end welding strip of the first disassembled battery string onto the middle bearing table; controlling a battery piece feeding mechanism to feed replacement battery pieces and stacking the replacement battery pieces onto a disassembly end welding strip of the first disassembly battery string; and controlling a second welding strip traction mechanism to pull the disassembling end welding strip of the second disassembled battery string, and translating the second welding strip and the second side bearing table towards the middle bearing table, and pulling and laying the disassembling end welding strip of the second disassembled battery string onto the replacement battery piece.
Aiming at the replacement battery piece of which the upper surface and the lower surface are required to be welded with the welding strips, the first welding strip traction mechanism, the second welding strip traction mechanism and the battery piece feeding mechanism are controlled to cooperate to realize that the disassembly end welding strips of the first disassembled battery string and the disassembly end welding strips of the second disassembled battery string are pulled and stacked to the corresponding positions of the upper surface and the lower surface of the replacement battery piece.
In some embodiments, the battery plates in the battery string to be repaired are IBC battery plates, the battery plate feeding mechanism is controlled to feed the replacement battery plates onto the repair platform to replace the defective battery plates, and the solder ribbon pulling mechanism is controlled to pull and stack the solder ribbon at the disassembling end of the first disassembled battery string and the solder ribbon at the disassembling end of the second disassembled battery string to the corresponding positions of the replacement battery plates, respectively, including: controlling a battery piece feeding mechanism to feed replacement battery pieces onto the middle bearing table; controlling a first welding strip traction mechanism to pull the dismantling end welding strip of the first dismantling battery string, and translating the dismantling end welding strip and the first side bearing table towards a middle bearing table together, and drawing and laying the dismantling end welding strip of the first dismantling battery string onto a replacement battery piece; and controlling a second welding strip traction mechanism to pull the disassembling end welding strip of the second disassembled battery string, and translating the second welding strip and the second side bearing table towards the middle bearing table, and pulling and laying the disassembling end welding strip of the second disassembled battery string onto the replacement battery piece.
Aiming at a replacement battery piece, namely an IBC battery piece, of which the back surface only needs to be welded with a welding strip, the disassembly end welding strip of a first disassembled battery string and the disassembly end welding strip of a second disassembled battery string are pulled and stacked to the corresponding position of the upper surface (namely the back surface of the IBC battery piece) of the replacement battery piece by controlling the matching action of the first welding strip traction mechanism, the second welding strip traction mechanism and the battery piece feeding mechanism.
In some embodiments, after obtaining the first disassembled battery string and the second disassembled battery string, the battery string rework method further comprises: controlling a tin supplementing mechanism located on the side of the repair platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or, before loading replacement battery pieces onto the rework platform, the battery string rework method further comprises: and controlling a tin supplementing mechanism positioned at the side of the battery piece feeding mechanism to supplement tin for the pad points of the replaced battery pieces.
Tin supplementing operation is carried out on the disassembled end welding strip and/or the replaced battery piece through controlling the tin supplementing mechanism, the welding of the disassembled end welding strip and the replaced battery piece is facilitated, and the repair welding quality is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a battery string repairing apparatus according to an embodiment of the present invention in a first view;
fig. 2 is a schematic structural diagram of a battery string repairing apparatus according to an embodiment of the present invention in a second view;
fig. 3 is a schematic structural diagram of a battery string repairing apparatus according to an embodiment of the present invention in a third view;
fig. 4 is a schematic structural diagram of a battery string repairing apparatus according to an embodiment of the present invention at a fourth viewing angle;
fig. 5 is a flowchart of a battery string repair method according to an embodiment of the present invention;
fig. 6 is a flowchart of a battery string repair method according to another embodiment of the present invention;
fig. 7 is a flowchart of a battery string repair method according to yet another embodiment of the present invention;
fig. 8 is a flowchart of a battery string repair method according to another embodiment of the invention;
wherein the reference numbers are as follows:
the repairing platform 10, the middle bearing table 11, the first side bearing table 12, the second side bearing table 13, the first side adsorption plate 121 and the second side adsorption plate 131;
the solder strip pulling mechanism 20: a first solder strip drawing mechanism 21 and a second solder strip drawing mechanism 22;
a heating welding mechanism 30;
battery piece feeding mechanism 40: a first gripping mechanism 41, a regularizing mechanism 42, a second gripping mechanism 43;
a flux applying mechanism 50;
and a tin supplementing mechanism 60.
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.
According to the traditional chip replacement repair mode, the defect battery chip and the welding strip on the defect battery chip are welded together manually by using electric soldering iron, and then the replacement battery chip and the welding strip welded together are welded together again by using the electric soldering iron. The traditional replacement repair mode has low repair efficiency and unstable repair quality, and influences productivity.
In view of the above, the invention provides a battery string repairing device and a repairing method, which can automatically disassemble the defective battery piece in the battery string to be repaired, and automatically weld the replacement battery piece to the position left after the defective battery piece is disassembled, thereby greatly improving the repairing efficiency of the battery string and ensuring the welding quality.
As shown in fig. 1 to 4, the battery string repairing device in the embodiment of the present invention includes a repairing platform 10, a solder strip pulling mechanism 20, a heat welding mechanism 30, and a battery piece feeding mechanism 40, wherein:
the repairing platform 10 is used for bearing the battery string to be repaired, and is matched with the heating welding mechanism 30 to desolder and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece, so as to obtain a first disassembled battery string and a second disassembled battery string.
The cell feeding mechanism 40 is used for feeding replacement cells onto the rework platform 10 to replace defective cells.
The solder strip traction mechanism 20 draws and stacks the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to the corresponding positions of the replaced battery pieces.
The heating welding mechanism 30 welds the stacked disassembled end welding strips to the corresponding replacement battery pieces to obtain the repaired battery string.
The battery string repairing device provided by the embodiment of the invention is used for repairing the battery string to be repaired, and the process is as follows:
and feeding the battery string to be repaired onto the repairing platform 10.
And controlling the repairing platform 10 and the heating and welding mechanism 30 to desolder and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string.
The cell piece feeding mechanism 40 is controlled to feed the replacement cell pieces onto the repair platform 10 to replace the defective cell pieces, that is, the disassembled defective cell pieces are taken away first, and then the replacement cell pieces are placed at the positions left after the defective cell pieces are taken away.
And controlling the solder strip traction mechanism 20 to respectively pull and stack the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to the corresponding positions of the replaced battery pieces.
The heating welding mechanism 30 is controlled to weld the stacked disassembled end welding strips to the corresponding replacement battery pieces, thereby obtaining the repaired battery string.
It can be seen that, by matching the repair platform 10, the cell feeding mechanism 40, the solder strip pulling mechanism 20 and the heating welding mechanism 30, the cell string repair device provided by the embodiment of the invention realizes automatic disassembly of defective cells in a cell string to be repaired, and automatically welds replacement cells to positions left after the defective cells are disassembled, thereby greatly improving the cell string repair efficiency.
Optionally, the heat welding mechanism 30 is an infrared light box mechanism.
With continued reference to fig. 1-3, optionally, the rework platform 10 includes a mounting seat, a middle carrier 11, a first side carrier 12, and a second side carrier 13, wherein:
the intermediate bearing table 11 is fixedly mounted on the mounting seat. The first side carrier 12 is movably connected to the mounting base and located on a first side of the middle carrier 11, and the first side carrier 12 is configured to be capable of translating toward or away from the middle carrier 11 and ascending and descending in a vertical direction. A second side carrier table 13 is movably attached to the mounting base and is positioned on a second side of the middle carrier table 11, the second side carrier table 13 being configured to translate toward or away from the middle carrier table 11 and to raise and lower in a vertical direction.
The middle bearing table 11 is used for bearing a defective battery piece or a replacement battery piece, the first side bearing table 12 is used for bearing a battery piece on a first side of the defective battery piece, and the second side bearing table 13 is used for bearing a battery piece on a second side of the defective battery piece.
The repairing platform 10 is matched with the heating and welding mechanism 30, and the specific process of unsoldering and separating the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece is as follows:
in the initial state, the middle carrier 11, the first side carrier 12 and the second side carrier 13 are horizontally and vertically aligned, that is, the middle carrier 11, the first side carrier 12 and the second side carrier 13 are connected to form a continuous horizontal carrier.
The battery string to be repaired is fed onto the bearing table top, the defective battery pieces are located on the middle bearing table 11, the battery pieces located on the first sides of the defective battery pieces are located on the first side bearing table 12, and the battery pieces located on the second sides of the defective battery pieces are located on the second side bearing table 13.
Implementing the desoldering and separation of the defective battery pieces:
and controlling the heating welding mechanism 30 to heat the defective cell piece, so that the welding strip welded on the defective cell piece is welded with the defective cell piece in a desoldering mode.
And controlling the first side bearing table 12 to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle bearing table 11, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and obtaining a first disassembled battery string.
And controlling the second side bearing table 13 to drive the battery piece positioned at the second side of the defective battery piece to move away from the middle bearing table 11, so that the welding strip welded on the adjacent battery piece at the second side of the defective battery piece is separated from the defective battery piece, and obtaining a second disassembled battery string.
Optionally, the first side bearing table 12 and the second side bearing table 13 may be synchronously controlled to move away from the middle bearing table 11, so as to synchronously obtain two disassembled battery strings. Or one of the two disassembled battery strings can be obtained by controlling the battery string to move away from the middle bearing platform 11 first and then controlling the other battery string to move away from the middle bearing platform 11.
Optionally, the solder strip pulling mechanism 20 includes a first solder strip pulling mechanism 21 and a second solder strip pulling mechanism 22, where the first solder strip pulling mechanism 21 is configured to stack the solder strips at the disassembled end of the first disassembled battery string to a corresponding position of the replacement battery piece, and the second solder strip pulling mechanism 22 is configured to pull the solder strips at the disassembled end of the second disassembled battery string to a corresponding position of the replacement battery piece.
As known to those skilled in the art, the battery cells mainly include two types, one type is a double-sided welding type battery cell in which welding strips need to be welded on both the front and back sides, and the other type is a battery cell in which welding strips need to be welded only on the back side, i.e., an inter-junction (IBC) battery cell. Wherein:
aiming at the battery string to be repaired formed by welding double-sided welding type battery pieces, the welding strip traction mechanism 20, the battery piece feeding mechanism 40 and the repairing platform 10 complete the stack of the welding strip at the disassembling end of the first disassembled battery string, the welding strip at the disassembling end of the second disassembled battery string and the replaced battery pieces according to the following processes:
in the initial state, that is, after the dismantling of the defective battery piece as described above is completed, the first side bearing table 12 and the second side bearing table 13 are both far away from the middle bearing table 11. The first disassembled battery string is borne on the first side bearing platform 12, the disassembled end welding strip of the first disassembled battery string extends outwards from the first side bearing platform 12, the second disassembled battery string is borne on the second side bearing platform 13, and the disassembled end welding strip of the second disassembled battery string extends outwards from the second side bearing platform 13.
Before the stacking operation is performed, after the first side bearing table 12 and the second side bearing table 13 are controlled to rise to the high positions, the first welding strip traction mechanism 21 and the second welding strip traction mechanism 22 are controlled to pull the dismantling end welding strips of the first dismantling battery string and the dismantling end welding strips of the second dismantling battery string.
Of course, the first side bearing table 12 and the second side bearing table 13 may be controlled to be raised to the high position after the first welding strip pulling mechanism 21 and the second welding strip pulling mechanism 22 are controlled to pull the first disassembled end welding strip of the battery string and the second disassembled end welding strip of the battery string.
By controlling the first side bearing table 12 and the second side bearing table 13 to ascend to a high position and then implementing the stacking operation, the traction movement of the disassembled end welding strip on the high position is realized, and the interference with the middle bearing table or the replaced battery plate in the traction process can be avoided.
And (3) performing stacking operation:
first, the first welding strip traction mechanism 21 and the first side bearing platform 12 are controlled to move horizontally towards the middle bearing platform 11, and in the traction process, the welding strips at the disassembling end of the first disassembled battery string are kept to be pulled in a horizontal state until the welding strips at the disassembling end of the first disassembled battery string reach the upper part of the middle bearing platform 11. And controlling the first side bearing platform 12 and the first welding strip traction mechanism 21 to descend, so that the welding strip at the disassembling end of the first disassembled battery string is laid on the middle bearing platform 11.
Then, the cell feeding mechanism 40 is controlled to feed and stack the replacement cell onto the first disassembled end welding strip of the first disassembled cell string.
And finally, controlling the second welding strip traction mechanism 22 and the second side bearing platform 13 to move horizontally towards the middle bearing platform 11, and in the same way, keeping the disassembling end welding strip of the second disassembled battery string to be in a horizontal state to be dragged in the traction process until the disassembling end welding strip of the second disassembled battery string reaches the upper part of the replaced battery piece, and controlling the second side bearing platform 13 and the second welding strip traction mechanism 22 to descend so that the disassembling end welding strip of the second disassembled battery string is laid on the replaced battery piece.
It should be noted that, in the stacking process, if the surface of the replacement battery piece has the main grid line, it is required to ensure that the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string are respectively stacked on the main grid line on the corresponding surface. If the surface of the replacement battery piece does not have the main grid lines, it is required to ensure that the dismantling end welding strips of the first dismantled battery string and the dismantling end welding strips of the second dismantled battery string are respectively stacked at the preset welding positions on the corresponding surfaces.
For a battery string to be repaired formed by welding back-connected (IBC) battery pieces, when the battery string to be repaired is fed onto the repairing platform 10, the back of the battery string to be repaired faces upwards; the welding strip traction mechanism 20, the battery piece feeding mechanism 40 and the repair platform 10 complete the stacking of the welding strip at the disassembling end of the first disassembled battery string, the welding strip at the disassembling end of the second disassembled battery string and the replacement battery piece according to the following processes:
similarly, in the initial state, the first side carrier table 12 and the second side carrier table 13 are both far away from the middle carrier table 11. The first disassembled battery string is borne on the first side bearing platform 12, the disassembled end welding strip of the first disassembled battery string extends outwards from the first side bearing platform 12, the second disassembled battery string is borne on the second side bearing platform 13, and the disassembled end welding strip of the second disassembled battery string extends outwards from the second side bearing platform 13.
Before the stacking operation is performed, after the first side bearing table 12 and the second side bearing table 13 are controlled to ascend to the high positions, the first welding strip traction mechanism 21 and the second welding strip traction mechanism 22 are controlled to pull the dismantling end welding strips of the first dismantling battery string and the dismantling end welding strips of the second dismantling battery string.
Of course, the first side bearing table 12 and the second side bearing table 13 may be controlled to be raised to the high position after the first welding strip pulling mechanism 21 and the second welding strip pulling mechanism 22 are controlled to pull the first disassembled end welding strip of the battery string and the second disassembled end welding strip of the battery string.
And (3) performing stacking operation:
first, the cell feeding mechanism 40 is controlled to feed the replacement cell onto the intermediate carrier, and the back of the replacement cell is ensured to face upward.
And then, controlling the first welding strip traction mechanism 21 and the first side bearing platform 12 to move horizontally towards the middle bearing platform 11, and keeping the welding strip at the disassembling end of the first disassembled battery string to be pulled in a horizontal state in the traction process until the welding strip at the disassembling end of the first disassembled battery string reaches the upper part of the replaced battery piece. And controlling the first side bearing table 12 and the first welding strip traction mechanism 21 to descend, so that the welding strips at the disassembling end of the first disassembled battery string are laid on the replacement battery piece.
And finally, controlling the second welding strip traction mechanism 22 and the second side bearing platform 13 to move horizontally towards the middle bearing platform 11, and in the same way, keeping the disassembling end welding strip of the second disassembled battery string to be in a horizontal state to be dragged in the traction process until the disassembling end welding strip of the second disassembled battery string reaches the upper part of the replaced battery piece, and controlling the second side bearing platform 13 and the second welding strip traction mechanism 22 to descend so that the disassembling end welding strip of the second disassembled battery string is laid on the replaced battery piece.
Similarly, in the stacking process, if the back surface of the replaced battery piece is provided with the main grid line, the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string need to be ensured to be respectively stacked on the positive main grid line and the negative main grid line. If the back of the replacement battery piece does not have the main grid line, the dismantling end welding strips of the first dismantling battery string and the dismantling end welding strips of the second dismantling battery string are required to be respectively overlapped at the preset welding positions.
Optionally, a heating assembly is arranged in the middle bearing table 11, and in the disassembling process, the heating assembly can be matched with the heating welding mechanism 30 to heat the defective battery piece borne on the middle bearing table 11, so that the disassembling efficiency of the defective battery piece is improved. In the welding process, the heating assembly can cooperate with the heating welding mechanism 30 to heat the replacement battery plate carried on the middle carrying platform 11, so that the welding efficiency of the replacement battery plate is improved.
With continued reference to fig. 1 to 3, optionally, an adsorption hole is disposed on the bearing surface of the middle bearing table 11, and the bearing surface adsorbs the defective battery piece or the replacement battery piece through the adsorption hole. The end of the first side bearing table 12 close to the middle bearing table is provided with a first side adsorption plate 121, and the first side adsorption plate 121 is used for bearing and adsorbing the adjacent battery piece on the first side of the defective battery piece. The end part of the second side bearing table 13 close to the middle bearing table 11 is provided with a second side adsorption plate 131, and the second side adsorption plate 131 is used for bearing and adsorbing the adjacent battery piece on the second side of the defective battery piece. The first side adsorption plate 121 and the second side adsorption plate 131 may also use adsorption holes as adsorption structures.
After the battery string to be repaired is placed on the repair platform 10 and the position of the battery string to be repaired is adjusted, the middle bearing table 11, the first side adsorption plate 121 and the second side adsorption plate 131 respectively adsorb the defective battery piece and the adjacent battery piece located on the first side and the second side of the defective battery piece, thereby ensuring that the defective battery piece can be stably kept on the middle bearing table 11 when the first side bearing table 12 and the second side bearing table 13 are far away from the middle bearing table 11 to move, thereby implementing the smooth disassembly of the defective battery piece, and simultaneously ensuring that the adjacent battery piece located on the first side and the second side of the defective battery piece can not generate the play to influence the subsequent welding precision in the disassembly process.
In addition, during stacking and welding, the middle bearing platform 11, the first side adsorption plate 121, and the second side adsorption plate 131 can respectively perform adsorption on the replacement cell, the disassembled end cell located in the first disassembled cell (i.e. the adjacent cell located on the first side of the defective cell before disassembly), and the disassembled end cell located in the second disassembled cell (i.e. the adjacent cell located on the second side of the defective cell before disassembly), so as to ensure that the ribbon welding traction mechanism 20 and the cell feeding mechanism 40 can smoothly stack the disassembled end ribbon of the first disassembled cell string, the disassembled end ribbon of the second disassembled cell string, and the replacement cell.
Optionally, the battery string repairing device in the embodiment of the present invention further includes a vision device, the vision device is disposed above the middle bearing table 11, and the vision device is used for determining the position of the battery piece to be replaced.
The solder strip traction mechanism 20 respectively pulls and stacks the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to the corresponding positions of the replaced battery pieces according to the positions of the replaced battery pieces.
As shown in fig. 1, optionally, the battery string repairing device in the embodiment of the present invention further includes a flux applying mechanism 50, where the flux applying mechanism 50 is configured to automatically apply flux to the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string before welding, so as to improve welding efficiency and welding quality.
The welding strip used in the battery string is usually a tin-coated copper strip, after the welding strip is separated from the defective battery piece by desoldering, tin originally coated on the welding strip at the dissembling end may remain on the defective battery piece, and when the battery piece is replaced to a brand-new battery piece, because no redundant tin is arranged on the welding point of the new battery piece, the welding between the welding strip at the dissembling end and the new battery piece is affected, and poor welding is caused.
When a new battery piece is selected as the replacement battery piece, in order to ensure that the welding strip at the disassembled end and the replacement battery piece can be welded well, as shown in fig. 1, the battery string repairing device in the embodiment of the present invention optionally further includes a tin supplementing mechanism 60. The tin supplement mechanism 60 can be selectively arranged on the side of the repair platform 10, and the tin supplement mechanism 60 is used for automatically supplementing tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string.
That is, after the defective cell is disassembled to obtain the first disassembled cell string and the second disassembled cell string, the tin supplement operation of the disassembled end welding strip of the first disassembled cell string and the disassembled end welding strip of the second disassembled cell string is performed by controlling the tin supplement mechanism 60.
And after finishing tin supplement operation on the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string, coating the scaling powder of the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string.
In addition to the tin supplement on the solder strip at the disassembling end, optionally, a tin supplement mechanism 60 may be disposed at the side of the cell feeding mechanism 40, and the tin supplement mechanism 60 is used for implementing tin supplement on the pad point of the replacement cell.
That is, before the replacement battery piece is loaded on the repair platform 10, the tin supplement mechanism 60 is used to supplement tin to the pad point of the replacement battery piece.
Of course, the tin supplement mechanisms 60 may be provided on both the edge side of the repair platform 10 and the edge side of the cell feeding mechanism 40, and tin supplement to the detached end welding strip of the first detached cell string and the detached end welding strip of the second detached cell string is performed before welding, and tin supplement to the pad points of the replacement cell is performed.
In addition to ensuring good welding between the end welding strip for disassembly and the replacement battery piece by the way of arranging the tin supplementing mechanism, the battery piece with tin on the welding point can be selected as the replacement battery piece, for example, an undamaged battery piece disassembled from other good battery strings by means of unsoldering can be used as the replacement battery piece, and a part of tin can remain on the welding point of the unsoldered battery piece; the tin printing equipment can also be used for carrying out tin printing on the pad points of the new battery piece, and the battery piece after tin printing is used as a replacement battery piece. Alternatively, as shown in fig. 1 to 3, the cell sheet feeding mechanism 40 includes a first picking mechanism 41, a regulating mechanism 42 and a second picking mechanism 43, wherein: the first picking mechanism 41 is used for picking up the replacement cell from the battery box and conveying the picked replacement cell to the arranging mechanism 42. The regulating mechanism 42 is used for regulating the replacement cell pieces. The second picking mechanism 43 is used for taking the defective cell out of the repair platform, and for picking up the regulated replacement cell from the regulating mechanism 43 and transporting the regulated replacement cell to the repair platform 10.
The specific operation process of the cell feeding mechanism 40 is as follows:
and controlling the first picking mechanism 41 to pick a replacement cell from the cell box, and conveying the picked replacement cell to the arranging mechanism 42 for arranging.
And controlling the second picking mechanism 43 to take the defective cell away from the repair platform, and transporting the regulated replacement cell from the regulating mechanism 42 to the repair platform 10.
Through the cooperation of the first picking mechanism 41, the arranging mechanism 42 and the second picking mechanism 43, the cell piece feeding mechanism 40 can automatically pick up the replacement cell pieces from the cell box, automatically feed the replacement cell pieces onto the repair platform 10 after the arrangement of the replacement cell pieces is completed, and automatically feed the disassembled defective cell pieces.
Alternatively, as shown in fig. 1, the second picking mechanism 43 includes a first suction part and a second suction part arranged side by side. The process of the second picking mechanism 43 is as follows:
after the regulating mechanism 42 regulates the replaced cell pieces, the second picking mechanism 43 is controlled to move to the position above the regulating mechanism 42, and the replaced cell pieces are adsorbed by the first adsorption part.
Then, the second picking mechanism 43 is controlled to move to the upper side of the repair platform 10, the second suction part first picks up the disassembled defective battery piece, and the first suction part immediately releases the replacement battery piece to the position vacated after the defective battery piece is taken away.
Then, the second picking mechanism 43 is controlled to move to the defective cell recovery station. After the second suction part releases the defective cell, the second picking mechanism 43 is controlled to move to the upper side of the regulating mechanism 42, so as to suck and feed the next replacement cell.
As known to those skilled in the art, during the welding process, the welding tool generally needs to be pressed onto the stacked battery plates and the welding strips, so as to ensure the welding effect and prevent the cold joint.
Optionally, the device for repairing the battery string in the embodiment of the present invention further includes a welding tool pick-and-place mechanism, where the welding tool pick-and-place mechanism is configured to press and place the welding tool onto the welding tape on the upper surface of the replacement battery piece after the welding tape at the disassembly end of the first disassembled battery string, the welding tape at the disassembly end of the second disassembled battery string, and the replacement battery piece are stacked.
After the heat welding mechanism 30 completes the welding operation, the welding tool pick-and-place mechanism removes the welding tool from the replacement battery piece.
Fig. 5 is a flowchart of a battery string repairing method according to an embodiment of the present invention, where the battery string repairing method according to the present invention can be implemented by the battery string repairing apparatus and a control program thereof in the foregoing embodiment, and the processing method may include the following steps:
and step 100, feeding the battery string to be repaired to a repair platform.
And 200, controlling the repairing platform and the heating welding mechanism to desolder and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string.
As described in the previous embodiments, the rework platform may include a mount, a middle carrier, a first side carrier and a second side carrier, wherein: the first side bearing platform and the second side bearing platform can move towards or away from the middle bearing platform in a translation mode and lift.
With the rework platform of this configuration, as shown in fig. 6, step 200 may optionally include the following sub-steps:
step 201: and controlling the heating and welding mechanism to heat the defective battery piece, so that the welding strip welded on the defective battery piece is welded with the defective battery piece in a desoldering way.
Step 202: controlling the first side bearing table to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle bearing table in a translation mode, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and obtaining a first disassembled battery string; and controlling the bearing table at the second side to drive the battery piece positioned at the second side of the defective battery piece to move away from the middle bearing table in a translation manner, so that the welding strip welded on the adjacent battery piece at the second side of the defective battery piece is separated from the defective battery piece, and obtaining a second disassembled battery string.
In step 202, the first side bearing table and the second side bearing table can be synchronously controlled to move away from the middle bearing table, and two disassembled battery strings are synchronously obtained. Or one of the two disassembled battery strings is controlled to move away from the middle bearing table, and then the other one of the two disassembled battery strings is controlled to move away from the middle bearing table, so that the two disassembled battery strings are obtained sequentially.
And 300, controlling the battery piece feeding mechanism to feed the replacement battery pieces onto the repair platform so as to replace the defective battery pieces, and controlling the solder strip traction mechanism to respectively pull and stack the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to corresponding positions of the replacement battery pieces.
As described above, the battery cells mainly include two types, which are distinguished by the welding surfaces of the welding strips, wherein one type is a double-side welding type battery cell in which the welding strips are required to be welded on both the front and back surfaces, and the other type is a battery cell in which the welding strips are required to be welded only on the back surface, i.e., an IBC (IBC) battery cell. Wherein:
for a to-be-repaired battery string formed by welding double-sided welding type battery pieces, as shown in fig. 7, step 300 may include the following sub-steps:
step 301, controlling the first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the first welding strip and the first side bearing table towards the middle bearing table, and pulling and laying the disassembled end welding strip of the first disassembled battery string onto the middle bearing table.
Optionally, before the traction is implemented, the first side bearing table is controlled to ascend to a high position, and of course, the first side welding table may be controlled to ascend to the high position after the first welding strip traction mechanism pulls the welding strip at the disassembling end of the first disassembled battery string.
After the first side bearing platform is translated to the position in the middle of the bearing platform, the first side bearing platform is lowered to the low position, and therefore the first dismantling end welding strip of the dismantling battery string is laid on the middle bearing platform.
And step 302, controlling a battery piece feeding mechanism to feed replacement battery pieces and stacking the replacement battery pieces onto a dismantling end welding strip of the first dismantling battery string.
And 303, controlling a second welding strip traction mechanism to pull the disassembled end welding strip of the second disassembled battery string, and translating the second welding strip and the second side bearing table towards the middle bearing table, and drawing and laying the disassembled end welding strip of the second disassembled battery string onto the replacement battery piece.
Optionally, before the traction is implemented, the second side bearing table is controlled to rise to the high position, and of course, after the second welding strip traction mechanism pulls the welding strip at the disassembling end of the second disassembled battery string, the second side welding table can also be controlled to rise to the high position.
After the second side bearing platform is translated to the position in the direction of the middle bearing platform, the second side bearing platform is lowered to the low position, and therefore the welding belt at the disassembling end of the second disassembling battery string is laid on the replacement battery piece.
For a string of cells to be repaired formed by back-to-back (IBC) cell tab welding, as shown in fig. 8, step 301 may include the following sub-steps:
step 301', controlling the cell sheet feeding mechanism to feed the replacement cell sheet onto the intermediate bearing table.
And step 302', controlling a first welding strip traction mechanism to pull the dismantling end welding strip of the first dismantling battery string, and translating the dismantling end welding strip and the first side bearing table towards a middle bearing table together, and drawing and laying the dismantling end welding strip of the first dismantling battery string onto a replacement battery piece.
Optionally, before the traction is implemented, the first side bearing table is controlled to ascend to a high position, and of course, the first side welding table may be controlled to ascend to the high position after the first welding strip traction mechanism pulls the welding strip at the disassembling end of the first disassembled battery string.
After the first side bearing platform is translated to the position in the direction of the middle bearing platform, the first side bearing platform is lowered to the low position, so that the welding belt at the disassembling end of the first disassembling battery string is laid on the replacement battery piece.
And 303', controlling a second welding strip traction mechanism to pull the disassembled end welding strip of the second disassembled battery string, and translating the second welding strip and the second side bearing table towards the middle bearing table, and drawing and laying the disassembled end welding strip of the second disassembled battery string onto the replacement battery piece.
Optionally, before the traction is implemented, the second side bearing table is controlled to rise to the high position, and of course, after the second welding strip traction mechanism pulls the welding strip at the disassembling end of the second disassembled battery string, the second side welding table can also be controlled to rise to the high position.
After the second side bearing platform is translated to the position in the direction of the middle bearing platform, the second side bearing platform is lowered to the low position, and therefore the welding belt at the disassembling end of the second disassembling battery string is laid on the replacement battery piece.
As described above, in some optional embodiments, the battery string repairing device further includes a tin supplementing mechanism, wherein the tin supplementing mechanism may be disposed at a side of the repairing platform, and may be disposed at a side of the battery piece feeding mechanism. Tin supplementing mechanisms can be arranged on the side of the repair platform and the side of the cell feeding mechanism respectively.
When the tin supplementing mechanism is arranged on the side of the repair platform, the method for repairing the battery string further comprises the following steps:
and controlling a tin supplementing mechanism positioned on the side of the repair platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string.
When the tin supplementing mechanism is arranged only on the side of the cell feeding mechanism, the method for repairing the cell string provided by the invention can further comprise the following steps:
before the replacement battery piece is loaded on the repair platform, the tin supplementing mechanism located on the side of the battery piece feeding mechanism is controlled to supplement tin for the pad point of the replacement battery piece.
When the tin supplementing mechanisms are respectively arranged on the side of the repair platform and the side of the battery piece feeding mechanism, the battery string repair method provided by the invention can further comprise the following steps:
and controlling a tin supplementing mechanism positioned on the side of the repair platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string.
Before the replacement battery piece is loaded on the repair platform, the tin supplementing mechanism located on the side of the battery piece feeding mechanism is controlled to supplement tin for the pad point of the replacement battery piece.
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 (15)

1. The utility model provides a device is reprocessed to battery cluster, its characterized in that, device is reprocessed to battery cluster is including reprocessing platform, welding and taking drive mechanism, heating welding mechanism and battery piece feed mechanism, wherein:
the repairing platform is used for bearing a battery string to be repaired, and is matched with the heating welding mechanism to perform desoldering and separation on a defective battery piece in the battery string to be repaired and a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
the battery piece feeding mechanism is used for feeding replacement battery pieces onto the repair platform to replace the defective battery pieces;
the welding strip traction mechanism is used for dragging and stacking the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string to corresponding positions of the replaced battery pieces;
and the heating welding mechanism welds the stacked disassembled end welding strips to the corresponding replacement battery pieces to obtain the repaired battery string.
2. The battery string repair device of claim 1, wherein the repair platform comprises a mounting base, a middle bearing table, a first side bearing table and a second side bearing table, wherein:
the middle bearing table is fixedly arranged on the mounting seat, the first side bearing table is movably connected to the mounting seat and is positioned on the first side of the middle bearing table, and the first side bearing table is configured to be capable of translating towards or away from the middle bearing table and ascending and descending in the vertical direction; the second side bearing table is movably connected to the mounting seat and located on a second side of the middle bearing table, and the second side bearing table is configured to be capable of translating towards or away from the middle bearing table and ascending and descending in a vertical direction;
the middle bearing table is used for bearing the defective battery piece or the replacement battery piece, the first side bearing table is used for bearing the battery piece located on the first side of the defective battery piece, and the second side bearing table is used for bearing the battery piece located on the second side of the defective battery piece.
3. The string repair device according to claim 2,
an adsorption hole is formed in the bearing surface of the middle bearing table, and the bearing surface adsorbs the defective battery piece or the replacement battery piece through the adsorption hole;
a first side adsorption plate is arranged at the end part of the first side bearing table close to the middle bearing table and used for bearing and adsorbing adjacent battery pieces on the first side of the defective battery piece;
the end part of the second side bearing table close to the middle bearing table is provided with a second side adsorption plate, and the second side adsorption plate is used for bearing and adsorbing adjacent battery pieces on the second side of the defective battery piece.
4. The battery string repairing device according to claim 2, wherein a heating assembly is disposed in the intermediate carrier, and the heating assembly is used for heating the defective battery piece or the replacement battery piece carried on the intermediate carrier.
5. The battery string repair device of claim 2, wherein the solder strip take-off mechanism comprises a first solder strip take-off mechanism and a second solder strip take-off mechanism, wherein:
welding strips are welded on the upper surface and the lower surface of the battery piece in the battery string to be repaired, and the first welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the first disassembled battery string onto the middle bearing table; the battery piece feeding mechanism feeds the replacement battery pieces and stacks the replacement battery pieces onto the dismantling end welding strip of the first dismantling battery string; the second welding strip traction mechanism is used for drawing and laying the welding strip at the disassembly end of the second disassembled battery string onto the replacement battery piece;
alternatively, the first and second electrodes may be,
the battery pieces in the battery string to be repaired are IBC battery pieces, the battery piece feeding mechanism feeds the replacement battery pieces onto the middle bearing table, and the first welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the first disassembled battery string onto the replacement battery pieces; and the second welding strip traction mechanism is used for drawing and laying the welding strip at the disassembling end of the second disassembled battery string onto the replacement battery piece.
6. The string repair device according to claim 2, wherein: the battery string repairing device further comprises a vision device, the vision device is arranged above the middle bearing table and used for determining the position of the replaceable battery piece, and the welding strip traction mechanism is used for respectively dragging and stacking the disassembling end welding strip of the first disassembled battery string and the disassembling end welding strip of the second disassembled battery string to the corresponding positions of the replaceable battery piece according to the position of the replaceable battery piece.
7. The string repair device according to claim 1, wherein: the battery string repairing device further comprises a soldering flux coating mechanism, and the soldering flux coating mechanism is used for coating soldering flux on the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string before welding.
8. The string repair device according to claim 1, wherein: cell piece feed mechanism includes that first picking up mechanism, regular mechanism and second pick up the mechanism, wherein:
the first picking mechanism is used for picking the replacement battery piece from the battery box and conveying the picked replacement battery piece to the arranging mechanism;
the regulating mechanism is used for regulating the replacement cell;
the second picking mechanism is used for taking the defective cell away from the repair platform, picking the regulated replacement cell from the regulating mechanism and carrying the regulated replacement cell to the repair platform.
9. The string repair device according to claim 1, wherein: the battery string repairing device further comprises a tin supplementing mechanism;
the tin supplementing mechanism is arranged at the side of the repair platform and is used for supplementing tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or the presence of a gas in the atmosphere,
and the tin supplementing mechanism is arranged on the side of the battery piece feeding mechanism and is used for implementing tin supplementing of the welding spot of the replacement battery piece.
10. The string repair device according to claim 1, wherein: the battery string repairing device further comprises a welding tool picking and placing mechanism, wherein the welding tool picking and placing mechanism is used for laying the welding belt at the disassembling end of the upper surface of the replacement battery piece on the replacement battery piece, then pressing the welding tool onto the welding belt at the disassembling end, and removing the welding tool after welding.
11. A battery string repairing method is characterized in that: the battery string repairing device according to claim 1, wherein the battery string repairing method comprises:
feeding the battery string to be repaired to a repair platform;
controlling the repair platform and the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired from a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
controlling the battery piece feeding mechanism to feed replacement battery pieces onto the repair platform to replace the defective battery pieces, and controlling the welding strip traction mechanism to respectively pull and stack the disassembly end welding strips of the first disassembled battery string and the disassembly end welding strips of the second disassembled battery string to corresponding positions of the replacement battery pieces;
and controlling the heating welding mechanism to weld the stacked disassembled end welding strips to the corresponding replacement battery piece.
12. The battery string repair method according to claim 11, wherein: the battery string repairing apparatus according to claim 2, said controlling the repairing platform and the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired from a welding strip welded on the defective battery piece, comprising:
controlling the heating and welding mechanism to heat the defective battery piece, so that the welding strip welded on the defective battery piece is welded with the defective battery piece in a desoldering mode;
controlling the first side bearing table to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle bearing table in a translation mode, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and the first disassembled battery string is obtained; and controlling the second side bearing table to drive the battery piece positioned at the second side of the defective battery piece to be far away from the middle bearing table for translation, so that the welding strip welded on the adjacent battery piece at the second side of the defective battery piece is separated from the defective battery piece, and obtaining the second disassembled battery string.
13. The battery string repair method according to claim 11, wherein: the battery string repairing device according to claim 5, wherein solder strips are welded to the upper surface and the lower surface of the battery piece in the battery string to be repaired, the battery piece feeding mechanism is controlled to feed the replacement battery piece onto the repairing platform to replace the defective battery piece, and the solder strip traction mechanism is controlled to respectively pull and stack the disassembly end solder strips of the first disassembled battery string and the disassembly end solder strips of the second disassembled battery string to corresponding positions of the replacement battery piece, the battery string repairing device comprising:
controlling the first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the first welding strip traction mechanism and the first side bearing table towards the middle bearing table, so as to pull and lay the disassembled end welding strip of the first disassembled battery string onto the middle bearing table;
controlling the battery piece feeding mechanism to feed the replacement battery pieces and stacking the replacement battery pieces onto a disassembling end welding strip of the first disassembling battery string;
and controlling the second welding strip traction mechanism to pull the disassembling end welding strip of the second disassembled battery string, and translating the second welding strip traction mechanism and the second side bearing table towards the middle bearing table, so that the disassembling end welding strip of the second disassembled battery string is pulled and laid on the replacement battery piece.
14. The battery string repair method according to claim 11, wherein: the battery string repairing device according to claim 5, wherein the battery pieces in the battery string to be repaired are IBC battery pieces, the battery piece feeding mechanism is controlled to feed replacement battery pieces onto the repairing platform to replace the defective battery pieces, and the solder ribbon traction mechanism is controlled to respectively pull and stack the disassembled end solder ribbons of the first disassembled battery string and the disassembled end solder ribbons of the second disassembled battery string to corresponding positions of the replacement battery pieces, the method comprising:
controlling the battery piece feeding mechanism to feed the replacement battery pieces onto the middle bearing table;
controlling the first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the first welding strip traction mechanism and the first side bearing table towards the middle bearing table, so as to pull and lay the disassembled end welding strip of the first disassembled battery string onto the replacement battery piece;
and controlling the second welding strip traction mechanism to pull the disassembling end welding strip of the second disassembled battery string, and translating the second welding strip traction mechanism and the second side bearing table towards the middle bearing table, so that the disassembling end welding strip of the second disassembled battery string is pulled and laid on the replacement battery piece.
15. The battery string repair method according to claim 11, wherein: the battery string repair apparatus according to claim 9, after obtaining the first disassembled battery string and the second disassembled battery string, the battery string repair method further comprising:
controlling the tin supplementing mechanism located on the side of the repair platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or the presence of a gas in the gas,
before loading replacement battery pieces onto the rework platform, the battery string rework method further includes:
and controlling the tin supplementing mechanism positioned at the side of the battery piece feeding mechanism to supplement tin for the pad points of the replaced battery pieces.
CN202210405092.6A 2022-04-18 Battery string repairing device and repairing method Active CN114864741B (en)

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